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2,404 results on '"DE LUCA, M."'

2. Italian guidelines for the management of adult individuals with overweight and obesity and metabolic comorbidities that are resistant to behavioral treatment

Author

Chianelli, M., Busetto, L., Vettor, R., Annibale, B., Paoletta, A., Papini, E., Albanese, A., Carabotti, M., Casarotto, D., De Pergola, G., Disoteo, O. E., Grandone, I., Medea, G., Nisoli, E., Raffaelli, M., Schiff, S., Vignati, F., Cinquini, M., Gonzalez-Lorenzo, M., Fittipaldo, V. A., Minozzi, S., Monteforte, M., Tralongo, A. C., Novizio, R., Persichetti, A., Samperi, I., Scoppola, A., Borretta, G., Carruba, M., Carbonelli, M. G., De Luca, M., Frontoni, S., Corradini, S. G., Muratori, F., and Attanasio, R.

Published
2024
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4. Nudging for Hand Hygiene

Author

Frangioni, G., Biermann, K. P., de Luca, M., Furiesi, C., Papini, D. E., Parente, E., Pirinu, M., Tacchini, L., Vagnoli, L., Vizzarro, V., Guasti, M., Tosi, Francesca, Editor-in-Chief, Germak, Claudio, Series Editor, Zurlo, Francesco, Series Editor, Jinyi, Zhi, Series Editor, Pozzatti Amadori, Marilaine, Series Editor, Caon, Maurizio, Series Editor, Bellandi, Tommaso, editor, Albolino, Sara, editor, and Bilancini, Ennio, editor

Published
2023
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5. ERGOMeyer for Patient Safety and Quality of Care: Ergonomics in a Children’s Hospital

Author

Frangioni, G., de Luca, M., Furiesi, C., Papini, D. E., Parente, E., Pirinu, M., Tacchini, L., Vizzarro, V., Vagnoli, L., Tosi, Francesca, Editor-in-Chief, Germak, Claudio, Series Editor, Zurlo, Francesco, Series Editor, Jinyi, Zhi, Series Editor, Pozzatti Amadori, Marilaine, Series Editor, Caon, Maurizio, Series Editor, Bellandi, Tommaso, editor, Albolino, Sara, editor, and Bilancini, Ennio, editor

Published
2023
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7. Dense cores and star formation in the giant molecular cloud Vela~C

Author

Massi, F., Weiss, A., Elia, D., Csengeri, T., Schisano, E., Giannini, T., Hill, T., Lorenzetti, D., Menten, K., Olmi, L., Schuller, F., Strafella, F., De Luca, M., Motte, F., and Wyrowski, F.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

Context The Vela Molecular Ridge is one of the nearest (700 pc) giant molecular cloud (GMC) complexes hosting intermediate-mass (up to early B, late O stars) star formation, and is located in the outer Galaxy, inside the Galactic plane. Vela C is one of the GMCs making up the Vela Molecular Ridge, and exhibits both sub-regions of robust and sub-regions of more quiescent star formation activity, with both low- and intermediate(high)-mass star formation in progress. Aims We aim to study the individual and global properties of dense dust cores in Vela C, and aim to search for spatial variations in these properties which could be related to different environmental properties and/or evolutionary stages in the various sub-regions of Vela C. Methods We mapped the submillimetre (345 GHz) emission from vela C with LABOCA (beam size 19.2", spatial resolution ~0.07 pc at 700 pc) at the APEX telescope. We used the clump-finding algorithm CuTEx to identify the compact submillimetre sources. We also used SIMBA (250 GHz) observations, and Herschel and WISE ancillary data. The association with WISE red sources allowed the protostellar and starless cores to be separated, whereas the Herschel dataset allowed the dust temperature to be derived for a fraction of cores. The protostellar and starless core mass functions (CMFs) were constructed following two different approaches, achieving a mass completeness limit of 3.7 Msun. Results We retrieved 549 submillimetre cores, 316 of which are starless and mostly gravitationally bound (therefore prestellar in nature). Both the protostellar and the starless CMFs are consistent with the shape of a Salpeter initial mass function in the high-mass part of the distribution. Clustering of cores at scales of 1--6 pc is also found, hinting at fractionation of magnetised, turbulent gas., Comment: 21 pages, 19 figures, to be published in Astronomy & Astrophysics

Published
2019
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8. Goodbye Hartmann trial: a prospective, international, multicenter, observational study on the current use of a surgical procedure developed a century ago

Author

Perrone, G, Giuffrida, M, Abu-Zidan, F, Kruger, V, Livrini, M, Petracca, G, Rossi, G, Tarasconi, A, Tian, B, Bonati, E, Mentz, R, Mazzini, F, Campana, J, Gasser, E, Kafka-Ritsch, R, Felsenreich, D, Dawoud, C, Riss, S, Gomes, C, Gomes, F, Gonzaga, R, Canton, C, Pereira, B, Fraga, G, Zem, L, Cordeiro-Fonseca, V, de Mesquita Tauil, R, Atanasov, B, Belev, N, Kovachev, N, Melendez, L, Dimova, A, Dimov, S, Zelic, Z, Augustin, G, Bogdanic, B, Moric, T, Chouillard, E, Bajul, M, De Simone, B, Panis, Y, Esposito, F, Notarnicola, M, Lauka, L, Fabbri, A, Hentati, H, Fnaiech, I, Aurelien, V, Bougard, M, Roulet, M, Demetrashvili, Z, Pipia, I, Merabishvili, G, Bouliaris, K, Koukoulis, G, Doudakmanis, C, Xenaki, S, Chrysos, E, Kokkinakis, S, Vassiliu, P, Michalopoulos, N, Margaris, I, Kechagias, A, Avgerinos, K, Katunin, J, Lostoridis, E, Nagorni, E, Pujante, A, Mulita, F, Maroulis, I, Vailas, M, Marinis, A, Siannis, I, Bourbouteli, E, Manatakis, D, Tasis, N, Acheimastos, V, Maria, S, Stylianos, K, Kuzeridis, H, Korkolis, D, Fradelos, E, Kavalieratos, G, Petropoulou, T, Polydorou, A, Papacostantinou, I, Triantafyllou, T, Kimpizi, D, Theodorou, D, Toutouzas, K, Chamzin, A, Frountzas, M, Schizas, D, Karavokyros, I, Syllaios, A, Charalabopoulos, A, Boura, M, Baili, E, Ioannidis, O, Loutzidou, L, Anestiadou, E, Tsouknidas, I, Petrakis, G, Polenta, E, Bains, L, Gupta, R, Singh, S, Khanduri, A, Bala, M, Kedar, A, Pisano, M, Podda, M, Pisanu, A, Martines, G, Trigiante, G, Lantone, G, Agrusa, A, Di Buono, G, Buscemi, S, Veroux, M, Gioco, R, Veroux, G, Oragano, L, Zonta, S, Lovisetto, F, Feo, C, Pesce, A, Fabbri, N, Marino, F, Perrone, F, Vincenti, L, Papagni, V, Picciariello, A, Rossi, S, Picardi, B, Del Monte, S, Visconti, D, Osella, G, Petruzzelli, L, Pignata, G, Andreuccetti, J, D'Alessio, R, Buonfantino, M, Guaitoli, E, Spinelli, S, Sampietro, G, Corbellini, C, Lorusso, L, Frontali, A, Pezzoli, I, Bonomi, A, Chierici, A, Cotsoglou, C, Manca, G, Delvecchio, A, Musa, N, Casati, M, Letizia, L, Abate, E, Ercolani, G, D'Acapito, F, Solaini, L, Guercioni, G, Cicconi, S, Sasia, D, Borghi, F, Giraudo, G, Sena, G, Castaldo, P, Cardamone, E, Portale, G, Zuin, M, Spolverato, Y, Esposito, M, Isernia, R, Di Salvo, M, Manunza, R, Esposito, G, Agus, M, Asti, E, Bernardi, D, Tonucci, T, Luppi, D, Casadei, M, Bonilauri, S, Pezzolla, A, Panebianco, A, Laforgia, R, De Luca, M, Zese, M, Parini, D, Jovine, E, De Sario, G, Lombardi, R, Aprea, G, Palomba, G, Capuano, M, Argenio, G, Orio, G, Armellino, M, Troian, M, Guerra, M, Nagliati, C, Biloslavo, A, Germani, P, Aizza, G, Monsellato, I, Chahrour, A, Anania, G, Bombardini, C, Bagolini, F, Sganga, G, Fransvea, P, Bianchi, V, Boati, P, Ferrara, F, Palmieri, F, Cianci, P, Gattulli, D, Restini, E, Cillara, N, Cannavera, A, Nita, G, Sarnari, J, Roscio, F, Clerici, F, Scandroglio, I, Berti, S, Cadeo, A, Filippelli, A, Conti, L, Grassi, C, Cattaneo, G, Pighin, M, Papis, D, Gambino, G, Bertino, V, Schifano, D, Prando, D, Fogato, L, Cavallo, F, Ansaloni, L, Picheo, R, Pontarolo, N, Depalma, N, Spampinato, M, D'Ugo, S, Lepre, L, Capponi, M, Campa, R, Sarro, G, Dinuzzi, V, Olmi, S, Uccelli, M, Ferrari, D, Inama, M, Moretto, G, Fontana, M, Favi, F, Picariello, E, Rampini, A, Barberis, A, Azzinnaro, A, Oliva, A, Totaro, L, Benzoni, I, Ranieri, V, Capolupo, G, Carannante, F, Caricato, M, Ronconi, M, Casiraghi, S, Casole, G, Pantalone, D, Alemanno, G, Scheiterle, M, Ceresoli, M, Cereda, M, Fumagalli, C, Zanzi, F, Bolzon, S, Guerra, E, Lecchi, F, Cellerino, P, Ardito, A, Scaramuzzo, R, Balla, A, Lepiane, P, Tartaglia, N, Ambrosi, A, Pavone, G, Palini, G, Veneroni, S, Garulli, G, Ricci, C, Torre, B, Russo, I, Rottoli, M, Tanzanu, M, Belvedere, A, Milone, M, Manigrasso, M, De Palma, G, Piccoli, M, Pattacini, G, Magnone, S, Bertoli, P, Massucco, P, Palisi, M, Luzzi, A, Fleres, F, Clarizia, G, Spolini, A, Kobe, Y, Toma, T, Shimamura, F, Parker, R, Ranketi, S, Mitei, M, Svagzdys, S, Pauzas, H, Zilinskas, J, Poskus, T, Kryzauskas, M, Jakubauskas, M, Zakaria, A, Zakaria, Z, Wong, M, Jusoh, A, Zakaria, M, Cruz, D, Elizalde, A, Reynaud, A, Hernandez, E, Monroy, J, Hinojosa-Ugarte, D, Quiodettis, M, Du Bois, M, Latorraca, J, Major, P, Pedziwiatr, M, Pisarska-Adamczyk, M, Waledziak, M, Kwiatkowski, A, Czyzykowski, L, da Costa, S, Ferreira, A, Almeida, F, Rocha, R, Carneiro, C, Perez, D, Carvas, J, Rocha, C, Ferreira, C, Marques, R, Fernandes, U, Leao, P, Goulart, A, Pereira, R, Patrocinio, S, de Mendonca, N, Manso, M, Morais, H, Cardoso, P, Calu, V, Miron, A, Toma, E, Gachabayov, M, Abdullaev, A, Litvin, A, Nechay, T, Tyagunov, A, Yuldashev, A, Bradley, A, Wilson, M, Panyko, A, Lateckova, Z, Lacko, V, Lesko, D, Soltes, M, Radonak, J, Turrado-Rodriguez, V, Termes-Serra, R, Morales-Sevillano, X, Lapolla, P, Mingoli, A, Brachini, G, Degiuli, M, Sofia, S, Reddavid, R, de Manzoni Garberini, A, Buffone, A, del Pozo, E, Aparicio-Sanchez, D, Dos Barbeito, S, Estaire-Gomez, M, Viton-Herrero, R, de los Angeles Gil Olarte-Marquez, M, Gil-Martinez, J, Alconchel, F, Nicolas-Lopez, T, Rahy-Martin, A, Pelloni, M, Banolas-Suarez, R, Mendoza-Moreno, F, Nisa, F, Diez-Alonso, M, Rodas, M, Agundez, M, Andres, M, Moreira, C, Perez, A, Ponce, I, Gonzalez-Castillo, A, Membrilla-Fernandez, E, Salvans, S, Serradilla-Martin, M, Pardo, P, Rivera-Alonso, D, Dziakova, J, Huguet, J, Valle, N, Ruiz, E, Valcarcel, C, Moreno, C, Salazar, Y, Garcia, J, Mico, S, Lopez, J, Farre, S, Gomez, M, Petit, N, Titos-Garcia, A, Aranda-Narvaez, J, Romacho-Lopez, L, Sanchez-Guillen, L, Aranaz-Ostariz, V, Bosch-Ramirez, M, Martinez-Perez, A, Martinez-Lopez, E, Sebastian-Tomas, J, Jimenez-Riera, G, Jimenez-Vega, J, Cuellar, J, Campos-Serra, A, Munoz-Campana, A, Gracia-Roman, R, Alegre, J, Pinto, F, O'Sullivan, S, Antona, F, Jimenez, B, Lopez-Sanchez, J, Carmona, Z, Fernandez, R, Sierra, I, de Leon, L, Moreno, V, Iglesias, E, Cumplido, P, Bravo, A, Simo, I, Dominguez, C, Caamano, A, Lozano, R, Martinez, M, Torres, A, de Quiros, J, Pellino, G, Cloquell, M, Moller, E, Jalal-Eldin, S, Abdoun, A, Hamid, H, Lohsiriwat, V, Mongkhonsupphawan, A, Baraket, O, Ayed, K, Abbassi, I, Ali, A, Ammar, H, Kchaou, A, Tlili, A, Zribi, I, Colak, E, Polat, S, Koylu, Z, Guner, A, Usta, M, Reis, M, Mantoglu, B, Gonullu, E, Akin, E, Altintoprak, F, Bayhan, Z, Firat, N, Isik, A, Memis, U, Bayrak, M, Altintas, Y, Kara, Y, Bozkurt, M, Kocatas, A, Das, K, Seker, A, Ozer, N, Atici, S, Tuncer, K, Kaya, T, Ozkan, Z, Ilhan, O, Agackiran, I, Uzunoglu, M, Demirbas, E, Altinel, Y, Meric, S, Hacim, N, Uymaz, D, Omarov, N, Balik, E, Tebala, G, Khalil, H, Rana, M, Khan, M, Florence, C, Swaminathan, C, Leo, C, Liasis, L, Watfah, J, Trostchansky, I, Delgado, E, Pontillo, M, Latifi, R, Coimbra, R, Edwards, S, Lopez, A, Velmahos, G, Dorken, A, Gebran, A, Palmer, A, Oury, J, Bardes, J, Seng, S, Coffua, L, Ratnasekera, A, Egodage, T, Echeverria-Rosario, K, Armento, I, Napolitano, L, Sangji, N, Hemmila, M, Quick, J, Austin, T, Hyman, T, Curtiss, W, Mcclure, A, Cairl, N, Biffl, W, Truong, H, Schaffer, K, Reames, S, Banchini, F, Capelli, P, Coccolini, F, Sartelli, M, Bravi, F, Vallicelli, C, Agnoletti, V, Baiocchi, G, Catena, F, Perrone G., Giuffrida M., Abu-Zidan F., Kruger V. F., Livrini M., Petracca G. L., Rossi G., Tarasconi A., Tian B. W. C. A., Bonati E., Mentz R., Mazzini F. N., Campana J. P., Gasser E., Kafka-Ritsch R., Felsenreich D. M., Dawoud C., Riss S., Gomes C. A., Gomes F. C., Gonzaga R. A. T., Canton C. A. B., Pereira B. M., Fraga G. P., Zem L. G., Cordeiro-Fonseca V., de Mesquita Tauil R., Atanasov B., Belev N., Kovachev N., Melendez L. J. J., Dimova A., Dimov S., Zelic Z., Augustin G., Bogdanic B., Moric T., Chouillard E., Bajul M., De Simone B., Panis Y., Esposito F., Notarnicola M., Lauka L., Fabbri A., Hentati H., Fnaiech I., Aurelien V., Bougard M., Roulet M., Demetrashvili Z., Pipia I., Merabishvili G., Bouliaris K., Koukoulis G., Doudakmanis C., Xenaki S., Chrysos E., Kokkinakis S., Vassiliu P., Michalopoulos N., Margaris I., Kechagias A., Avgerinos K., Katunin J., Lostoridis E., Nagorni E. -A., Pujante A., Mulita F., Maroulis I., Vailas M., Marinis A., Siannis I., Bourbouteli E., Manatakis D. K., Tasis N., Acheimastos V., Maria S., Stylianos K., Kuzeridis H., Korkolis D., Fradelos E., Kavalieratos G., Petropoulou T., Polydorou A., Papacostantinou I., Triantafyllou T., Kimpizi D., Theodorou D., Toutouzas K., Chamzin A., Frountzas M., Schizas D., Karavokyros I., Syllaios A., Charalabopoulos A., Boura M., Baili E., Ioannidis O., Loutzidou L., Anestiadou E., Tsouknidas I., Petrakis G., Polenta E., Bains L., Gupta R., Singh S. K., Khanduri A., Bala M., Kedar A., Pisano M., Podda M., Pisanu A., Martines G., Trigiante G., Lantone G., Agrusa A., Di Buono G., Buscemi S., Veroux M., Gioco R., Veroux G., Oragano L., Zonta S., Lovisetto F., Feo C. V., Pesce A., Fabbri N., Marino F., Perrone F., Vincenti L., Papagni V., Picciariello A., Rossi S., Picardi B., Del Monte S. R., Visconti D., Osella G., Petruzzelli L., Pignata G., Andreuccetti J., D'Alessio R., Buonfantino M., Guaitoli E., Spinelli S., Sampietro G. M., Corbellini C., Lorusso L., Frontali A., Pezzoli I., Bonomi A., Chierici A., Cotsoglou C., Manca G., Delvecchio A., Musa N., Casati M., Letizia L., Abate E., Ercolani G., D'Acapito F., Solaini L., Guercioni G., Cicconi S., Sasia D., Borghi F., Giraudo G., Sena G., Castaldo P., Cardamone E., Portale G., Zuin M., Spolverato Y., Esposito M., Isernia R. M., Di Salvo M., Manunza R., Esposito G., Agus M., Asti E. L. G., Bernardi D. T., Tonucci T. P., Luppi D., Casadei M., Bonilauri S., Pezzolla A., Panebianco A., Laforgia R., De Luca M., Zese M., Parini D., Jovine E., De Sario G., Lombardi R., Aprea G., Palomba G., Capuano M., Argenio G., Orio G., Armellino M. F., Troian M., Guerra M., Nagliati C., Biloslavo A., Germani P., Aizza G., Monsellato I., Chahrour A. C., Anania G., Bombardini C., Bagolini F., Sganga G., Fransvea P., Bianchi V., Boati P., Ferrara F., Palmieri F., Cianci P., Gattulli D., Restini E., Cillara N., Cannavera A., Nita G. E., Sarnari J., Roscio F., Clerici F., Scandroglio I., Berti S., Cadeo A., Filippelli A., Conti L., Grassi C., Cattaneo G. M., Pighin M., Papis D., Gambino G., Bertino V., Schifano D., Prando D., Fogato L., Cavallo F., Ansaloni L., Picheo R., Pontarolo N., Depalma N., Spampinato M., D'Ugo S., Lepre L., Capponi M. G., Campa R. D., Sarro G., Dinuzzi V. P., Olmi S., Uccelli M., Ferrari D., Inama M., Moretto G., Fontana M., Favi F., Picariello E., Rampini A., Barberis A., Azzinnaro A., Oliva A., Totaro L., Benzoni I., Ranieri V., Capolupo G. T., Carannante F., Caricato M., Ronconi M., Casiraghi S., Casole G., Pantalone D., Alemanno G., Scheiterle M., Ceresoli M., Cereda M., Fumagalli C., Zanzi F., Bolzon S., Guerra E., Lecchi F., Cellerino P., Ardito A., Scaramuzzo R., Balla A., Lepiane P., Tartaglia N., Ambrosi A., Pavone G., Palini G. M., Veneroni S., Garulli G., Ricci C., Torre B., Russo I. S., Rottoli M., Tanzanu M., Belvedere A., Milone M., Manigrasso M., De Palma G. D., Piccoli M., Pattacini G. C., Magnone S., Bertoli P., Massucco P., Palisi M., Luzzi A. -P., Fleres F., Clarizia G., Spolini A., Kobe Y., Toma T., Shimamura F., Parker R., Ranketi S., Mitei M., Svagzdys S., Pauzas H., Zilinskas J., Poskus T., Kryzauskas M., Jakubauskas M., Zakaria A. D., Zakaria Z., Wong M. P. -K., Jusoh A. C., Zakaria M. N., Cruz D. R., Elizalde A. B. R., Reynaud A. B., Hernandez E. E. L., Monroy J. M. V. P., Hinojosa-Ugarte D., Quiodettis M., Du Bois M. E., Latorraca J., Major P., Pedziwiatr M., Pisarska-Adamczyk M., Waledziak M., Kwiatkowski A., Czyzykowski L., da Costa S. D., Pereira B., Ferreira A. R. O., Almeida F., Rocha R., Carneiro C., Perez D. P., Carvas J., Rocha C., Ferreira C., Marques R., Fernandes U., Leao P., Goulart A., Pereira R. G., Patrocinio S. D. D., de Mendonca N. G. G., Manso M. I. C., Morais H. M. C., Cardoso P. S., Calu V., Miron A., Toma E. A., Gachabayov M., Abdullaev A., Litvin A., Nechay T., Tyagunov A., Yuldashev A., Bradley A., Wilson M., Panyko A., Lateckova Z., Lacko V., Lesko D., Soltes M., Radonak J., Turrado-Rodriguez V., Termes-Serra R., Morales-Sevillano X., Lapolla P., Mingoli A., Brachini G., Degiuli M., Sofia S., Reddavid R., de Manzoni Garberini A., Buffone A., del Pozo E. P., Aparicio-Sanchez D., Dos Barbeito S., Estaire-Gomez M., Viton-Herrero R., de los Angeles Gil Olarte-Marquez M. a., Gil-Martinez J., Alconchel F., Nicolas-Lopez T., Rahy-Martin A. C., Pelloni M., Banolas-Suarez R., Mendoza-Moreno F., Nisa F. G. -M., Diez-Alonso M., Rodas M. E. V., Agundez M. C., Andres M. I. P., Moreira C. C. L., Perez A. L., Ponce I. A., Gonzalez-Castillo A. M., Membrilla-Fernandez E., Salvans S., Serradilla-Martin M., Pardo P. S., Rivera-Alonso D., Dziakova J., Huguet J. M., Valle N. P., Ruiz E. C., Valcarcel C. R., Moreno C. R., Salazar Y. T. M., Garcia J. J. R., Mico S. S., Lopez J. R., Farre S. P., Gomez M. S., Petit N. M., Titos-Garcia A., Aranda-Narvaez J. M., Romacho-Lopez L., Sanchez-Guillen L., Aranaz-Ostariz V., Bosch-Ramirez M., Martinez-Perez A., Martinez-Lopez E., Sebastian-Tomas J. C., Jimenez-Riera G., Jimenez-Vega J., Cuellar J. A. N., Campos-Serra A., Munoz-Campana A., Gracia-Roman R., Alegre J. M., Pinto F. L., O'Sullivan S. N., Antona F. B., Jimenez B. M., Lopez-Sanchez J., Carmona Z. G., Fernandez R. T., Sierra I. B., de Leon L. R. G., Moreno V. P., Iglesias E., Cumplido P. L., Bravo A. A., Simo I. R., Dominguez C. L., Caamano A. G., Lozano R. C., Martinez M. D., Torres A. N., de Quiros J. T. M. B., Pellino G., Cloquell M. M., Moller E. G., Jalal-Eldin S., Abdoun A. K., Hamid H. K. S., Lohsiriwat V., Mongkhonsupphawan A., Baraket O., Ayed K., Abbassi I., Ali A. B., Ammar H., Kchaou A., Tlili A., Zribi I., Colak E., Polat S., Koylu Z. A., Guner A., Usta M. A., Reis M. E., Mantoglu B., Gonullu E., Akin E., Altintoprak F., Bayhan Z., Firat N., Isik A., Memis U., Bayrak M., Altintas Y., Kara Y., Bozkurt M. A., Kocatas A., Das K., Seker A., Ozer N., Atici S. D., Tuncer K., Kaya T., Ozkan Z., Ilhan O., Agackiran I., Uzunoglu M. Y., Demirbas E., Altinel Y., Meric S., Hacim N. A., Uymaz D. S., Omarov N., Balik E., Tebala G. D., Khalil H., Rana M., Khan M., Florence C., Swaminathan C., Leo C. A., Liasis L., Watfah J., Trostchansky I., Delgado E., Pontillo M., Latifi R., Coimbra R., Edwards S., Lopez A., Velmahos G., Dorken A., Gebran A., Palmer A., Oury J., Bardes J. M., Seng S. S., Coffua L. S., Ratnasekera A., Egodage T., Echeverria-Rosario K., Armento I., Napolitano L. M., Sangji N. F., Hemmila M., Quick J. A., Austin T. R., Hyman T. S., Curtiss W., McClure A., Cairl N., Biffl W. L., Truong H. P., Schaffer K., Reames S., Banchini F., Capelli P., Coccolini F., Sartelli M., Bravi F., Vallicelli C., Agnoletti V., Baiocchi G. 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Mcclure, A, Cairl, N, Biffl, W, Truong, H, Schaffer, K, Reames, S, Banchini, F, Capelli, P, Coccolini, F, Sartelli, M, Bravi, F, Vallicelli, C, Agnoletti, V, Baiocchi, G, Catena, F, Perrone G., Giuffrida M., Abu-Zidan F., Kruger V. F., Livrini M., Petracca G. L., Rossi G., Tarasconi A., Tian B. W. C. A., Bonati E., Mentz R., Mazzini F. N., Campana J. P., Gasser E., Kafka-Ritsch R., Felsenreich D. M., Dawoud C., Riss S., Gomes C. A., Gomes F. C., Gonzaga R. A. T., Canton C. A. B., Pereira B. M., Fraga G. P., Zem L. G., Cordeiro-Fonseca V., de Mesquita Tauil R., Atanasov B., Belev N., Kovachev N., Melendez L. J. J., Dimova A., Dimov S., Zelic Z., Augustin G., Bogdanic B., Moric T., Chouillard E., Bajul M., De Simone B., Panis Y., Esposito F., Notarnicola M., Lauka L., Fabbri A., Hentati H., Fnaiech I., Aurelien V., Bougard M., Roulet M., Demetrashvili Z., Pipia I., Merabishvili G., Bouliaris K., Koukoulis G., Doudakmanis C., Xenaki S., Chrysos E., Kokkinakis S., Vassiliu P., Michalopoulos N., Margaris I., Kechagias A., Avgerinos K., Katunin J., Lostoridis E., Nagorni E. -A., Pujante A., Mulita F., Maroulis I., Vailas M., Marinis A., Siannis I., Bourbouteli E., Manatakis D. 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M., Corbellini C., Lorusso L., Frontali A., Pezzoli I., Bonomi A., Chierici A., Cotsoglou C., Manca G., Delvecchio A., Musa N., Casati M., Letizia L., Abate E., Ercolani G., D'Acapito F., Solaini L., Guercioni G., Cicconi S., Sasia D., Borghi F., Giraudo G., Sena G., Castaldo P., Cardamone E., Portale G., Zuin M., Spolverato Y., Esposito M., Isernia R. M., Di Salvo M., Manunza R., Esposito G., Agus M., Asti E. L. G., Bernardi D. T., Tonucci T. P., Luppi D., Casadei M., Bonilauri S., Pezzolla A., Panebianco A., Laforgia R., De Luca M., Zese M., Parini D., Jovine E., De Sario G., Lombardi R., Aprea G., Palomba G., Capuano M., Argenio G., Orio G., Armellino M. F., Troian M., Guerra M., Nagliati C., Biloslavo A., Germani P., Aizza G., Monsellato I., Chahrour A. C., Anania G., Bombardini C., Bagolini F., Sganga G., Fransvea P., Bianchi V., Boati P., Ferrara F., Palmieri F., Cianci P., Gattulli D., Restini E., Cillara N., Cannavera A., Nita G. E., Sarnari J., Roscio F., Clerici F., Scandroglio I., Berti S., Cadeo A., Filippelli A., Conti L., Grassi C., Cattaneo G. M., Pighin M., Papis D., Gambino G., Bertino V., Schifano D., Prando D., Fogato L., Cavallo F., Ansaloni L., Picheo R., Pontarolo N., Depalma N., Spampinato M., D'Ugo S., Lepre L., Capponi M. G., Campa R. D., Sarro G., Dinuzzi V. P., Olmi S., Uccelli M., Ferrari D., Inama M., Moretto G., Fontana M., Favi F., Picariello E., Rampini A., Barberis A., Azzinnaro A., Oliva A., Totaro L., Benzoni I., Ranieri V., Capolupo G. T., Carannante F., Caricato M., Ronconi M., Casiraghi S., Casole G., Pantalone D., Alemanno G., Scheiterle M., Ceresoli M., Cereda M., Fumagalli C., Zanzi F., Bolzon S., Guerra E., Lecchi F., Cellerino P., Ardito A., Scaramuzzo R., Balla A., Lepiane P., Tartaglia N., Ambrosi A., Pavone G., Palini G. M., Veneroni S., Garulli G., Ricci C., Torre B., Russo I. S., Rottoli M., Tanzanu M., Belvedere A., Milone M., Manigrasso M., De Palma G. D., Piccoli M., Pattacini G. C., Magnone S., Bertoli P., Massucco P., Palisi M., Luzzi A. -P., Fleres F., Clarizia G., Spolini A., Kobe Y., Toma T., Shimamura F., Parker R., Ranketi S., Mitei M., Svagzdys S., Pauzas H., Zilinskas J., Poskus T., Kryzauskas M., Jakubauskas M., Zakaria A. D., Zakaria Z., Wong M. P. -K., Jusoh A. C., Zakaria M. N., Cruz D. R., Elizalde A. B. R., Reynaud A. B., Hernandez E. E. L., Monroy J. M. V. P., Hinojosa-Ugarte D., Quiodettis M., Du Bois M. E., Latorraca J., Major P., Pedziwiatr M., Pisarska-Adamczyk M., Waledziak M., Kwiatkowski A., Czyzykowski L., da Costa S. D., Pereira B., Ferreira A. R. O., Almeida F., Rocha R., Carneiro C., Perez D. P., Carvas J., Rocha C., Ferreira C., Marques R., Fernandes U., Leao P., Goulart A., Pereira R. G., Patrocinio S. D. D., de Mendonca N. G. G., Manso M. I. C., Morais H. M. C., Cardoso P. S., Calu V., Miron A., Toma E. A., Gachabayov M., Abdullaev A., Litvin A., Nechay T., Tyagunov A., Yuldashev A., Bradley A., Wilson M., Panyko A., Lateckova Z., Lacko V., Lesko D., Soltes M., Radonak J., Turrado-Rodriguez V., Termes-Serra R., Morales-Sevillano X., Lapolla P., Mingoli A., Brachini G., Degiuli M., Sofia S., Reddavid R., de Manzoni Garberini A., Buffone A., del Pozo E. P., Aparicio-Sanchez D., Dos Barbeito S., Estaire-Gomez M., Viton-Herrero R., de los Angeles Gil Olarte-Marquez M. a., Gil-Martinez J., Alconchel F., Nicolas-Lopez T., Rahy-Martin A. C., Pelloni M., Banolas-Suarez R., Mendoza-Moreno F., Nisa F. G. -M., Diez-Alonso M., Rodas M. E. V., Agundez M. C., Andres M. I. P., Moreira C. C. L., Perez A. L., Ponce I. A., Gonzalez-Castillo A. M., Membrilla-Fernandez E., Salvans S., Serradilla-Martin M., Pardo P. S., Rivera-Alonso D., Dziakova J., Huguet J. M., Valle N. P., Ruiz E. C., Valcarcel C. R., Moreno C. R., Salazar Y. T. M., Garcia J. J. R., Mico S. S., Lopez J. R., Farre S. P., Gomez M. S., Petit N. M., Titos-Garcia A., Aranda-Narvaez J. M., Romacho-Lopez L., Sanchez-Guillen L., Aranaz-Ostariz V., Bosch-Ramirez M., Martinez-Perez A., Martinez-Lopez E., Sebastian-Tomas J. C., Jimenez-Riera G., Jimenez-Vega J., Cuellar J. A. N., Campos-Serra A., Munoz-Campana A., Gracia-Roman R., Alegre J. M., Pinto F. L., O'Sullivan S. N., Antona F. B., Jimenez B. M., Lopez-Sanchez J., Carmona Z. G., Fernandez R. T., Sierra I. B., de Leon L. R. G., Moreno V. P., Iglesias E., Cumplido P. L., Bravo A. A., Simo I. R., Dominguez C. L., Caamano A. G., Lozano R. C., Martinez M. D., Torres A. N., de Quiros J. T. M. B., Pellino G., Cloquell M. M., Moller E. G., Jalal-Eldin S., Abdoun A. K., Hamid H. K. S., Lohsiriwat V., Mongkhonsupphawan A., Baraket O., Ayed K., Abbassi I., Ali A. B., Ammar H., Kchaou A., Tlili A., Zribi I., Colak E., Polat S., Koylu Z. A., Guner A., Usta M. A., Reis M. E., Mantoglu B., Gonullu E., Akin E., Altintoprak F., Bayhan Z., Firat N., Isik A., Memis U., Bayrak M., Altintas Y., Kara Y., Bozkurt M. A., Kocatas A., Das K., Seker A., Ozer N., Atici S. D., Tuncer K., Kaya T., Ozkan Z., Ilhan O., Agackiran I., Uzunoglu M. Y., Demirbas E., Altinel Y., Meric S., Hacim N. A., Uymaz D. S., Omarov N., Balik E., Tebala G. D., Khalil H., Rana M., Khan M., Florence C., Swaminathan C., Leo C. A., Liasis L., Watfah J., Trostchansky I., Delgado E., Pontillo M., Latifi R., Coimbra R., Edwards S., Lopez A., Velmahos G., Dorken A., Gebran A., Palmer A., Oury J., Bardes J. M., Seng S. S., Coffua L. S., Ratnasekera A., Egodage T., Echeverria-Rosario K., Armento I., Napolitano L. M., Sangji N. F., Hemmila M., Quick J. A., Austin T. R., Hyman T. S., Curtiss W., McClure A., Cairl N., Biffl W. L., Truong H. P., Schaffer K., Reames S., Banchini F., Capelli P., Coccolini F., Sartelli M., Bravi F., Vallicelli C., Agnoletti V., Baiocchi G. L., and Catena F.

Abstract

Background: Literature suggests colonic resection and primary anastomosis (RPA) instead of Hartmann’s procedure (HP) for the treatment of left-sided colonic emergencies. We aim to evaluate the surgical options globally used to treat patients with acute left-sided colonic emergencies and the factors that leading to the choice of treatment, comparing HP and RPA. Methods: This is a prospective, international, multicenter, observational study registered on ClinicalTrials.gov. A total 1215 patients with left-sided colonic emergencies who required surgery were included from 204 centers during the period of March 1, 2020, to May 31, 2020. with a 1-year follow-up. Results: 564 patients (43.1%) were females. The mean age was 65.9 ± 15.6 years. HP was performed in 697 (57.3%) patients and RPA in 384 (31.6%) cases. Complicated acute diverticulitis was the most common cause of left-sided colonic emergencies (40.2%), followed by colorectal malignancy (36.6%). Severe complications (Clavien-Dindo ≥ 3b) were higher in the HP group (P < 0.001). 30-day mortality was higher in HP patients (13.7%), especially in case of bowel perforation and diffused peritonitis. 1-year follow-up showed no differences on ostomy reversal rate between HP and RPA. (P = 0.127). A backward likelihood logistic regression model showed that RPA was preferred in younger patients, having low ASA score (≤ 3), in case of large bowel obstruction, absence of colonic ischemia, longer time from admission to surgery, operating early at the day working hours, by a surgeon who performed more than 50 colorectal resections. Conclusions: After 100 years since the first Hartmann’s procedure, HP remains the most common treatment for left-sided colorectal emergencies. Treatment’s choice depends on patient characteristics, the time of surgery and the experience of the surgeon. RPA should be considered as the gold standard for surgery, with HP being an exception.

Published
2024

9. Abdominal drainage after elective colorectal surgery: propensity score-matched retrospective analysis of an Italian cohort

Author

Guadagni, S, Catarci, M, Masedu, F, Karim, M, Clementi, M, Ruffo, G, Viola, M, Borghi, F, Baldazzi, G, Scatizzi, M, Pirozzi, F, Delrio, P, Garulli, G, Marini, P, Campagnacci, R, De Luca, R, Ficari, F, Sica, G, Scabini, S, Liverani, A, Caricato, M, Patriti, A, Mancini, S, Baiocchi, G, Santoro, R, Siquini, W, Guercioni, G, Basti, M, Pedrazzani, C, Totis, M, Carrara, A, Lucchi, A, Pavanello, M, Muratore, A, D'Ugo, S, Di Leo, A, Pignata, G, Elmore, U, Anania, G, Carlini, M, Corcione, F, Vettoretto, N, Longo, G, Sorrentino, M, Giuliani, A, Ferrari, G, Taglietti, L, Verzelli, A, Di Cosmo, M, Cavaliere, D, Milone, M, Rausei, S, Ciaccio, G, Tebala, G, Brisinda, G, Berti, S, Millo, P, Boni, L, Guerrieri, M, Persiani, R, Parini, D, Spinelli, A, Genna, M, Bottino, V, Coratti, A, Scala, D, Rivolta, U, Piccoli, M, Talarico, C, Roviello, F, Anastasi, A, Ettorre, G, Montuori, M, Mariani, P, de Manzini, N, Donini, A, Armellino, M, Feo, C, Guerriero, S, Costanzi, A, Marchesi, F, Cicetti, M, Ciano, P, Benedetti, M, Montemurro, L, Mattei, M, Belloni, E, Apa, D, Di Carlo, M, Bertocchi, E, Masini, G, Altamura, A, Rubichi, F, Cianflocca, D, Migliore, M, Cassini, D, Pandolfini, L, Falsetto, A, Sciuto, A, Pace, U, Bucci, A, Monari, F, Attina, G, Maurizi, A, Simone, M, Giudici, F, Cianchi, F, Sensi, B, Aprile, A, Soriero, D, Scarinci, A, Capolupo, G, Sisti, V, Ricci, M, Sagnotta, A, Molfino, S, Amodio, P, Cardinali, A, Cicconi, S, Marziali, I, Frazzini, D, Conti, C, Tamini, N, Braga, M, Motter, M, Tirone, G, Martorelli, G, Cacurri, A, Di Marco, C, Marsanic, P, Federico, N, Spampinato, M, Crepaz, L, Andreuccetti, J, Canfora, I, Maggi, G, Chiozza, M, Spoletini, D, Marcellinaro, R, Bracale, U, Peltrini, R, Di Nuzzo, M, Botteri, E, Santoni, S, Stefanoni, M, Del Vecchio, G, Magistro, C, Ruggiero, S, Birindelli, A, Budassi, A, Zigiotto, D, Solaini, L, Ercolani, G, De Palma, G, Tenconi, S, Locurto, P, Di Cintio, A, Chiarello, M, Cariati, M, Gennai, A, Grivon, M, Cassinotti, E, Ortenzi, M, Biondi, A, De Luca, M, Carrano, F, Fior, F, Ferronetti, A, Giuliani, G, Marino, G, Bertoglio, C, Pecchini, F, Greco, V, Piagnerelli, R, Canonico, G, Colasanti, M, Pinotti, E, Carminati, R, Osenda, E, Graziosi, L, De Martino, C, Ioia, G, Pindozzi, F, Organetti, L, Monteleone, M, Dalmonte, G, La Gioia, G, Guadagni S., Catarci M., Masedu F., Karim M. E., Clementi M., Ruffo G., Viola M. G., Borghi F., Baldazzi G., Scatizzi M., Pirozzi F., Delrio P., Garulli G., Marini P., Campagnacci R., De Luca R., Ficari F., Sica G., Scabini S., Liverani A., Caricato M., Patriti A., Mancini S., Baiocchi G. L., Santoro R., Siquini W., Guercioni G., Basti M., Pedrazzani C., Totis M., Carrara A., Lucchi A., Pavanello M., Muratore A., D'Ugo S., Di Leo A., Pignata G., Elmore U., Anania G., Carlini M., Corcione F., Vettoretto N., Longo G., Sorrentino M., Giuliani A., Ferrari G., Taglietti L., Verzelli A., Di Cosmo M., Cavaliere D., Milone M., Rausei S., Ciaccio G., Tebala G., Brisinda G., Berti S., Millo P., Boni L., Guerrieri M., Persiani R., Parini D., Spinelli A., Genna M., Bottino V., Coratti A., Scala D., Rivolta U., Piccoli M., Talarico C., Roviello F., Anastasi A., Ettorre G. M., Montuori M., Mariani P., de Manzini N., Donini A., Armellino M. F., Feo C., Guerriero S., Costanzi A., Marchesi F., Cicetti M., Ciano P., Benedetti M., Montemurro L. A., Mattei M. S., Belloni E., Apa D., Di Carlo M., Bertocchi E., Masini G., Altamura A., Rubichi F., Cianflocca D., Migliore M., Cassini D., Pandolfini L., Falsetto A., Sciuto A., Pace U., Bucci A. F., Monari F., Attina G. M., Maurizi A., Simone M., Giudici F., Cianchi F., Sensi B., Aprile A., Soriero D., Scarinci A., Capolupo G. T., Sisti V., Ricci M. L., Sagnotta A., Molfino S., Amodio P., Cardinali A., Cicconi S., Marziali I., Frazzini D., Conti C., Tamini N., Braga M., Motter M., Tirone G., Martorelli G., Cacurri A., Di Marco C., Marsanic P., Federico N. S. P., Spampinato M., Crepaz L., Andreuccetti J., Canfora I., Maggi G., Chiozza M., Spoletini D., Marcellinaro R., Bracale U., Peltrini R., Di Nuzzo M. M., Botteri E., Santoni S., Stefanoni M., Del Vecchio G., Magistro C., Ruggiero S., Birindelli A., Budassi A., Zigiotto D., Solaini L., Ercolani G., De Palma G. D., Tenconi S., Locurto P., Di Cintio A., Chiarello M. M., Cariati M., Gennai A., Grivon M., Cassinotti E., Ortenzi M., Biondi A., De Luca M., Carrano F., Fior F., Ferronetti A., Giuliani G., Marino G., Bertoglio C. L., Pecchini F., Greco V., Piagnerelli R., Canonico G., Colasanti M., Pinotti E., Carminati R., Osenda E., Graziosi L., De Martino C., Ioia G., Pindozzi F., Organetti L., Monteleone M., Dalmonte G., La Gioia G., Guadagni, S, Catarci, M, Masedu, F, Karim, M, Clementi, M, Ruffo, G, Viola, M, Borghi, F, Baldazzi, G, Scatizzi, M, Pirozzi, F, Delrio, P, Garulli, G, Marini, P, Campagnacci, R, De Luca, R, Ficari, F, Sica, G, Scabini, S, Liverani, A, Caricato, M, Patriti, A, Mancini, S, Baiocchi, G, Santoro, R, Siquini, W, Guercioni, G, Basti, M, Pedrazzani, C, Totis, M, Carrara, A, Lucchi, A, Pavanello, M, Muratore, A, D'Ugo, S, Di Leo, A, Pignata, G, Elmore, U, Anania, G, Carlini, M, Corcione, F, Vettoretto, N, Longo, G, Sorrentino, M, Giuliani, A, Ferrari, G, Taglietti, L, Verzelli, A, Di Cosmo, M, Cavaliere, D, Milone, M, Rausei, S, Ciaccio, G, Tebala, G, Brisinda, G, Berti, S, Millo, P, Boni, L, Guerrieri, M, Persiani, R, Parini, D, Spinelli, A, Genna, M, Bottino, V, Coratti, A, Scala, D, Rivolta, U, Piccoli, M, Talarico, C, Roviello, F, Anastasi, A, Ettorre, G, Montuori, M, Mariani, P, de Manzini, N, Donini, A, Armellino, M, Feo, C, Guerriero, S, Costanzi, A, Marchesi, F, Cicetti, M, Ciano, P, Benedetti, M, Montemurro, L, Mattei, M, Belloni, E, Apa, D, Di Carlo, M, Bertocchi, E, Masini, G, Altamura, A, Rubichi, F, Cianflocca, D, Migliore, M, Cassini, D, Pandolfini, L, Falsetto, A, Sciuto, A, Pace, U, Bucci, A, Monari, F, Attina, G, Maurizi, A, Simone, M, Giudici, F, Cianchi, F, Sensi, B, Aprile, A, Soriero, D, Scarinci, A, Capolupo, G, Sisti, V, Ricci, M, Sagnotta, A, Molfino, S, Amodio, P, Cardinali, A, Cicconi, S, Marziali, I, Frazzini, D, Conti, C, Tamini, N, Braga, M, Motter, M, Tirone, G, Martorelli, G, Cacurri, A, Di Marco, C, Marsanic, P, Federico, N, Spampinato, M, Crepaz, L, Andreuccetti, J, Canfora, I, Maggi, G, Chiozza, M, Spoletini, D, Marcellinaro, R, Bracale, U, Peltrini, R, Di Nuzzo, M, Botteri, E, Santoni, S, Stefanoni, M, Del Vecchio, G, Magistro, C, Ruggiero, S, Birindelli, A, Budassi, A, Zigiotto, D, Solaini, L, Ercolani, G, De Palma, G, Tenconi, S, Locurto, P, Di Cintio, A, Chiarello, M, Cariati, M, Gennai, A, Grivon, M, Cassinotti, E, Ortenzi, M, Biondi, A, De Luca, M, Carrano, F, Fior, F, Ferronetti, A, Giuliani, G, Marino, G, Bertoglio, C, Pecchini, F, Greco, V, Piagnerelli, R, Canonico, G, Colasanti, M, Pinotti, E, Carminati, R, Osenda, E, Graziosi, L, De Martino, C, Ioia, G, Pindozzi, F, Organetti, L, Monteleone, M, Dalmonte, G, La Gioia, G, Guadagni S., Catarci M., Masedu F., Karim M. E., Clementi M., Ruffo G., Viola M. G., Borghi F., Baldazzi G., Scatizzi M., Pirozzi F., Delrio P., Garulli G., Marini P., Campagnacci R., De Luca R., Ficari F., Sica G., Scabini S., Liverani A., Caricato M., Patriti A., Mancini S., Baiocchi G. L., Santoro R., Siquini W., Guercioni G., Basti M., Pedrazzani C., Totis M., Carrara A., Lucchi A., Pavanello M., Muratore A., D'Ugo S., Di Leo A., Pignata G., Elmore U., Anania G., Carlini M., Corcione F., Vettoretto N., Longo G., Sorrentino M., Giuliani A., Ferrari G., Taglietti L., Verzelli A., Di Cosmo M., Cavaliere D., Milone M., Rausei S., Ciaccio G., Tebala G., Brisinda G., Berti S., Millo P., Boni L., Guerrieri M., Persiani R., Parini D., Spinelli A., Genna M., Bottino V., Coratti A., Scala D., Rivolta U., Piccoli M., Talarico C., Roviello F., Anastasi A., Ettorre G. M., Montuori M., Mariani P., de Manzini N., Donini A., Armellino M. F., Feo C., Guerriero S., Costanzi A., Marchesi F., Cicetti M., Ciano P., Benedetti M., Montemurro L. A., Mattei M. S., Belloni E., Apa D., Di Carlo M., Bertocchi E., Masini G., Altamura A., Rubichi F., Cianflocca D., Migliore M., Cassini D., Pandolfini L., Falsetto A., Sciuto A., Pace U., Bucci A. F., Monari F., Attina G. M., Maurizi A., Simone M., Giudici F., Cianchi F., Sensi B., Aprile A., Soriero D., Scarinci A., Capolupo G. T., Sisti V., Ricci M. L., Sagnotta A., Molfino S., Amodio P., Cardinali A., Cicconi S., Marziali I., Frazzini D., Conti C., Tamini N., Braga M., Motter M., Tirone G., Martorelli G., Cacurri A., Di Marco C., Marsanic P., Federico N. S. P., Spampinato M., Crepaz L., Andreuccetti J., Canfora I., Maggi G., Chiozza M., Spoletini D., Marcellinaro R., Bracale U., Peltrini R., Di Nuzzo M. M., Botteri E., Santoni S., Stefanoni M., Del Vecchio G., Magistro C., Ruggiero S., Birindelli A., Budassi A., Zigiotto D., Solaini L., Ercolani G., De Palma G. D., Tenconi S., Locurto P., Di Cintio A., Chiarello M. M., Cariati M., Gennai A., Grivon M., Cassinotti E., Ortenzi M., Biondi A., De Luca M., Carrano F., Fior F., Ferronetti A., Giuliani G., Marino G., Bertoglio C. L., Pecchini F., Greco V., Piagnerelli R., Canonico G., Colasanti M., Pinotti E., Carminati R., Osenda E., Graziosi L., De Martino C., Ioia G., Pindozzi F., Organetti L., Monteleone M., Dalmonte G., and La Gioia G.

Abstract

Background: In Italy, surgeons continue to drain the abdominal cavity in more than 50 per cent of patients after colorectal resection. The aim of this study was to evaluate the impact of abdominal drain placement on early adverse events in patients undergoing elective colorectal surgery. Methods: A database was retrospectively analysed through a 1:1 propensity score-matching model including 21 covariates. The primary endpoint was the postoperative duration of stay, and the secondary endpoints were surgical site infections, infectious morbidity rate defined as surgical site infections plus pulmonary infections plus urinary infections, anastomotic leakage, overall morbidity rate, major morbidity rate, reoperation and mortality rates. The results of multiple logistic regression analyses were presented as odds ratios (OR) and 95 per cent c.i. Results: A total of 6157 patients were analysed to produce two well-balanced groups of 1802 patients: group (A), no abdominal drain(s) and group (B), abdominal drain(s). Group A versus group B showed a significantly lower risk of postoperative duration of stay >6 days (OR 0.60; 95 per cent c.i. 0.51–0.70; P < 0.001). A mean postoperative duration of stay difference of 0.86 days was detected between groups. No difference was recorded between the two groups for all the other endpoints. Conclusion: This study confirms that placement of abdominal drain(s) after elective colorectal surgery is associated with a non-clinically significant longer (0.86 days) postoperative duration of stay but has no impact on any other secondary outcomes, confirming that abdominal drains should not be used routinely in colorectal surgery.

Published
2024

10. Mechanical bowel preparation in elective colorectal surgery: a propensity score-matched analysis of the Italian colorectal anastomotic leakage (iCral) study group prospective cohorts

Author

Catarci, M, Guadagni, S, Masedu, F, Ruffo, G, Viola, M, Borghi, F, Baldazzi, G, Pirozzi, F, Delrio, P, Garulli, G, Marini, P, Patriti, A, Campagnacci, R, Sica, G, Caricato, M, Montemurro, L, Ciano, P, Benedetti, M, Guercioni, G, Scatizzi, M, De Luca, R, Ficari, F, Scabini, S, Liverani, A, Mancini, S, Baiocchi, G, Santoro, R, Siquini, W, Basti, M, Pedrazzani, C, Totis, M, Carrara, A, Lucchi, A, Pavanello, M, Muratore, A, D'Ugo, S, Di Leo, A, Pignata, G, Elmore, U, Anania, G, Carlini, M, Corcione, F, Vettoretto, N, Longo, G, Sorrentino, M, Giuliani, A, Ferrari, G, Taglietti, L, Verzelli, A, Di Cosmo, M, Cavaliere, D, Milone, M, Rausei, S, Ciaccio, G, Tebala, G, Brisinda, G, Berti, S, Millo, P, Boni, L, Guerrieri, M, Persiani, R, Parini, D, Spinelli, A, Genna, M, Bottino, V, Coratti, A, Scala, D, Rivolta, U, Piccoli, M, Talarico, C, Roviello, F, Anastasi, A, Ettorre, G, Montuori, M, Mariani, P, de Manzini, N, Donini, A, Armellino, M, Feo, C, Guerriero, S, Costanzi, A, Marchesi, F, Cicetti, M, Mattei, M, Belloni, E, Apa, D, Di Carlo, M, Cicconi, S, Marziali, I, Clementi, M, Bertocchi, E, Masini, G, Altamura, A, Rubichi, F, Cianflocca, D, Migliore, M, Cassini, D, Sciuto, A, Pace, U, Bucci, A, Monari, F, Attina, G, Sisti, V, Ricci, M, Maurizi, A, Sensi, B, Capolupo, G, Pandolfini, L, Falsetto, A, Simone, M, Giudici, F, Cianchi, F, Baldini, G, Aprile, A, Soriero, D, Scarinci, A, Sagnotta, A, Molfino, S, Amodio, P, Cardinali, A, Frazzini, D, Conti, C, Tamini, N, Braga, M, Motter, M, Tirone, G, Martorelli, G, Cacurri, A, Di Marco, C, Marsanic, P, Federico, N, Spampinato, M, Crepaz, L, Andreuccetti, J, Canfora, I, Maggi, G, Chiozza, M, Spoletini, D, Marcellinaro, R, Lisi, G, Bracale, U, Peltrini, R, Di Nuzzo, M, Botteri, E, Santoni, S, Stefanoni, M, Del Vecchio, G, Magistro, C, Ruggiero, S, Birindelli, A, Budassi, A, Zigiotto, D, Solaini, L, Ercolani, G, De Palma, G, Tenconi, S, Locurto, P, Di Cintio, A, Chiarello, M, Cariati, M, Gennai, A, Grivon, M, Cassinotti, E, Ortenzi, M, Biondi, A, De Luca, M, Carrano, F, Fior, F, Ferronetti, A, Giuliani, G, Marino, G, Bertoglio, C, Pecchini, F, Greco, V, Piagnerelli, R, Canonico, G, Colasanti, M, Pinotti, E, Carminati, R, Osenda, E, Graziosi, L, De Martino, C, Ioia, G, Pindozzi, F, Organetti, L, Monteleone, M, Dalmonte, G, La Gioia, G, Catarci M., Guadagni S., Masedu F., Ruffo G., Viola M. G., Borghi F., Baldazzi G., Pirozzi F., Delrio P., Garulli G., Marini P., Patriti A., Campagnacci R., Sica G., Caricato M., Montemurro L. A., Ciano P., Benedetti M., Guercioni G., Scatizzi M., De Luca R., Ficari F., Scabini S., Liverani A., Mancini S., Baiocchi G. L., Santoro R., Siquini W., Basti M., Pedrazzani C., Totis M., Carrara A., Lucchi A., Pavanello M., Muratore A., D'Ugo S., Di Leo A., Pignata G., Elmore U., Anania G., Carlini M., Corcione F., Vettoretto N., Longo G., Sorrentino M., Giuliani A., Ferrari G., Taglietti L., Verzelli A., Di Cosmo M., Cavaliere D., Milone M., Rausei S., Ciaccio G., Tebala G., Brisinda G., Berti S., Millo P., Boni L., Guerrieri M., Persiani R., Parini D., Spinelli A., Genna M., Bottino V., Coratti A., Scala D., Rivolta U., Piccoli M., Talarico C., Roviello F., Anastasi A., Ettorre G. M., Montuori M., Mariani P., de Manzini N., Donini A., Armellino M. F., Feo C., Guerriero S., Costanzi A., Marchesi F., Cicetti M., Mattei M. S., Belloni E., Apa D., Di Carlo M., Cicconi S., Marziali I., Clementi M., Bertocchi E., Masini G., Altamura A., Rubichi F., Cianflocca D., Migliore M., Cassini D., Sciuto A., Pace U., Bucci A. F., Monari F., Attina G. M., Sisti V., Ricci M. L., Maurizi A., Sensi B., Capolupo G. T., Pandolfini L., Falsetto A., Simone M., Giudici F., Cianchi F., Baldini G., Aprile A., Soriero D., Scarinci A., Sagnotta A., Molfino S., Amodio P., Cardinali A., Frazzini D., Conti C., Tamini N., Braga M., Motter M., Tirone G., Martorelli G., Cacurri A., Di Marco C., Marsanic P., Federico N. S. P., Spampinato M., Crepaz L., Andreuccetti J., Canfora I., Maggi G., Chiozza M., Spoletini D., Marcellinaro R., Lisi G., Bracale U., Peltrini R., Di Nuzzo M. M., Botteri E., Santoni S., Stefanoni M., Del Vecchio G., Magistro C., Ruggiero S., Birindelli A., Budassi A., Zigiotto D., Solaini L., Ercolani G., De Palma G. D., Tenconi S., Locurto P., Di Cintio A., Chiarello M. M., Cariati M., Gennai A., Grivon M., Cassinotti E., Ortenzi M., Biondi A., De Luca M., Carrano F., Fior F., Ferronetti A., Giuliani G., Marino G., Bertoglio C. L., Pecchini F., Greco V., Piagnerelli R., Canonico G., Colasanti M., Pinotti E., Carminati R., Osenda E., Graziosi L., De Martino C., Ioia G., Pindozzi F., Organetti L., Monteleone M., Dalmonte G., La Gioia G., Catarci, M, Guadagni, S, Masedu, F, Ruffo, G, Viola, M, Borghi, F, Baldazzi, G, Pirozzi, F, Delrio, P, Garulli, G, Marini, P, Patriti, A, Campagnacci, R, Sica, G, Caricato, M, Montemurro, L, Ciano, P, Benedetti, M, Guercioni, G, Scatizzi, M, De Luca, R, Ficari, F, Scabini, S, Liverani, A, Mancini, S, Baiocchi, G, Santoro, R, Siquini, W, Basti, M, Pedrazzani, C, Totis, M, Carrara, A, Lucchi, A, Pavanello, M, Muratore, A, D'Ugo, S, Di Leo, A, Pignata, G, Elmore, U, Anania, G, Carlini, M, Corcione, F, Vettoretto, N, Longo, G, Sorrentino, M, Giuliani, A, Ferrari, G, Taglietti, L, Verzelli, A, Di Cosmo, M, Cavaliere, D, Milone, M, Rausei, S, Ciaccio, G, Tebala, G, Brisinda, G, Berti, S, Millo, P, Boni, L, Guerrieri, M, Persiani, R, Parini, D, Spinelli, A, Genna, M, Bottino, V, Coratti, A, Scala, D, Rivolta, U, Piccoli, M, Talarico, C, Roviello, F, Anastasi, A, Ettorre, G, Montuori, M, Mariani, P, de Manzini, N, Donini, A, Armellino, M, Feo, C, Guerriero, S, Costanzi, A, Marchesi, F, Cicetti, M, Mattei, M, Belloni, E, Apa, D, Di Carlo, M, Cicconi, S, Marziali, I, Clementi, M, Bertocchi, E, Masini, G, Altamura, A, Rubichi, F, Cianflocca, D, Migliore, M, Cassini, D, Sciuto, A, Pace, U, Bucci, A, Monari, F, Attina, G, Sisti, V, Ricci, M, Maurizi, A, Sensi, B, Capolupo, G, Pandolfini, L, Falsetto, A, Simone, M, Giudici, F, Cianchi, F, Baldini, G, Aprile, A, Soriero, D, Scarinci, A, Sagnotta, A, Molfino, S, Amodio, P, Cardinali, A, Frazzini, D, Conti, C, Tamini, N, Braga, M, Motter, M, Tirone, G, Martorelli, G, Cacurri, A, Di Marco, C, Marsanic, P, Federico, N, Spampinato, M, Crepaz, L, Andreuccetti, J, Canfora, I, Maggi, G, Chiozza, M, Spoletini, D, Marcellinaro, R, Lisi, G, Bracale, U, Peltrini, R, Di Nuzzo, M, Botteri, E, Santoni, S, Stefanoni, M, Del Vecchio, G, Magistro, C, Ruggiero, S, Birindelli, A, Budassi, A, Zigiotto, D, Solaini, L, Ercolani, G, De Palma, G, Tenconi, S, Locurto, P, Di Cintio, A, Chiarello, M, Cariati, M, Gennai, A, Grivon, M, Cassinotti, E, Ortenzi, M, Biondi, A, De Luca, M, Carrano, F, Fior, F, Ferronetti, A, Giuliani, G, Marino, G, Bertoglio, C, Pecchini, F, Greco, V, Piagnerelli, R, Canonico, G, Colasanti, M, Pinotti, E, Carminati, R, Osenda, E, Graziosi, L, De Martino, C, Ioia, G, Pindozzi, F, Organetti, L, Monteleone, M, Dalmonte, G, La Gioia, G, Catarci M., Guadagni S., Masedu F., Ruffo G., Viola M. G., Borghi F., Baldazzi G., Pirozzi F., Delrio P., Garulli G., Marini P., Patriti A., Campagnacci R., Sica G., Caricato M., Montemurro L. A., Ciano P., Benedetti M., Guercioni G., Scatizzi M., De Luca R., Ficari F., Scabini S., Liverani A., Mancini S., Baiocchi G. L., Santoro R., Siquini W., Basti M., Pedrazzani C., Totis M., Carrara A., Lucchi A., Pavanello M., Muratore A., D'Ugo S., Di Leo A., Pignata G., Elmore U., Anania G., Carlini M., Corcione F., Vettoretto N., Longo G., Sorrentino M., Giuliani A., Ferrari G., Taglietti L., Verzelli A., Di Cosmo M., Cavaliere D., Milone M., Rausei S., Ciaccio G., Tebala G., Brisinda G., Berti S., Millo P., Boni L., Guerrieri M., Persiani R., Parini D., Spinelli A., Genna M., Bottino V., Coratti A., Scala D., Rivolta U., Piccoli M., Talarico C., Roviello F., Anastasi A., Ettorre G. M., Montuori M., Mariani P., de Manzini N., Donini A., Armellino M. F., Feo C., Guerriero S., Costanzi A., Marchesi F., Cicetti M., Mattei M. S., Belloni E., Apa D., Di Carlo M., Cicconi S., Marziali I., Clementi M., Bertocchi E., Masini G., Altamura A., Rubichi F., Cianflocca D., Migliore M., Cassini D., Sciuto A., Pace U., Bucci A. F., Monari F., Attina G. M., Sisti V., Ricci M. L., Maurizi A., Sensi B., Capolupo G. T., Pandolfini L., Falsetto A., Simone M., Giudici F., Cianchi F., Baldini G., Aprile A., Soriero D., Scarinci A., Sagnotta A., Molfino S., Amodio P., Cardinali A., Frazzini D., Conti C., Tamini N., Braga M., Motter M., Tirone G., Martorelli G., Cacurri A., Di Marco C., Marsanic P., Federico N. S. P., Spampinato M., Crepaz L., Andreuccetti J., Canfora I., Maggi G., Chiozza M., Spoletini D., Marcellinaro R., Lisi G., Bracale U., Peltrini R., Di Nuzzo M. M., Botteri E., Santoni S., Stefanoni M., Del Vecchio G., Magistro C., Ruggiero S., Birindelli A., Budassi A., Zigiotto D., Solaini L., Ercolani G., De Palma G. D., Tenconi S., Locurto P., Di Cintio A., Chiarello M. M., Cariati M., Gennai A., Grivon M., Cassinotti E., Ortenzi M., Biondi A., De Luca M., Carrano F., Fior F., Ferronetti A., Giuliani G., Marino G., Bertoglio C. L., Pecchini F., Greco V., Piagnerelli R., Canonico G., Colasanti M., Pinotti E., Carminati R., Osenda E., Graziosi L., De Martino C., Ioia G., Pindozzi F., Organetti L., Monteleone M., Dalmonte G., and La Gioia G.

Abstract

Retrospective evaluation of the effects of mechanical bowel preparation (MBP) on data derived from two prospective open-label observational multicenter studies in Italy regarding elective colorectal surgery. MBP for elective colorectal surgery remains a controversial issue with contrasting recommendations in current guidelines. The Italian ColoRectal Anastomotic Leakage (iCral) study group, therefore, decided to estimate the effects of no MBP (treatment variable) versus MBP for elective colorectal surgery. A total of 8359 patients who underwent colorectal resection with anastomosis were enrolled in two consecutive prospective studies in 78 surgical centers in Italy from January 2019 to September 2021. A retrospective PSMA was performed on 5455 (65.3%) cases after the application of explicit exclusion criteria to eliminate confounders. The primary endpoints were anastomotic leakage (AL) and surgical site infections (SSI) rates; the secondary endpoints included SSI subgroups, overall and major morbidity, reoperation, and mortality rates. Overall length of postoperative hospital stay (LOS) was also considered. Two well-balanced groups of 1125 patients each were generated: group A (No MBP, true population of interest), and group B (MBP, control population), performing a PSMA considering 21 covariates. Group A vs. group B resulted significantly associated with a lower risk of AL [42 (3.5%) vs. 73 (6.0%) events; OR 0.57; 95% CI 0.38–0.84; p = 0.005]. No difference was recorded between the two groups for SSI [73 (6.0%) vs. 85 (7.0%) events; OR 0.88; 95% CI 0.63–1.22; p = 0.441]. Regarding the secondary endpoints, no MBP resulted significantly associated with a lower risk of reoperation and LOS > 6 days. This study confirms that no MBP before elective colorectal surgery is significantly associated with a lower risk of AL, reoperation rate, and LOS < 6 days when compared with MBP.

Published
2024

11. Stime dell'antibiotico-resistenza in Italia e in Europa occidentale nel 2019: un'analisi comparativa basata su MICROBE [Estimates of antibiotic resistance in Italy and Western Europe in 2019: a MICROBE-based comparative analysis]

Author

Zamagni, G, Forni, S, Iavicoli, I, Guicciardi, S, Buonsenso, D, Ferrara, P, De Luca, M, Golinelli, D, Sanmarchi, F, Collatuzzo, G, Gemmi, F, Naghavi, M, Sabbatucci, M, Monasta, L, Zamagni G., Forni S., Iavicoli I., Guicciardi S., Buonsenso D., Ferrara P., De Luca M., Golinelli D., Sanmarchi F., Collatuzzo G., Gemmi F., Naghavi M., Sabbatucci M., Monasta L., Zamagni, G, Forni, S, Iavicoli, I, Guicciardi, S, Buonsenso, D, Ferrara, P, De Luca, M, Golinelli, D, Sanmarchi, F, Collatuzzo, G, Gemmi, F, Naghavi, M, Sabbatucci, M, Monasta, L, Zamagni G., Forni S., Iavicoli I., Guicciardi S., Buonsenso D., Ferrara P., De Luca M., Golinelli D., Sanmarchi F., Collatuzzo G., Gemmi F., Naghavi M., Sabbatucci M., and Monasta L.

Abstract

BACKGROUND: antimicrobial resistance (AMR) will cause 10 million deaths per year worldwide by 2050, with economic costs of up to 100 trillion dollars. Antibiotic resistance (ABR) constitutes the majority of this health threat. Globally, 1.27 million people died in 2019 as a direct result of ABR. One in 5 deaths occurred in children under five, and 6 bacterial pathogens accounted for more than 70% of ABR-associated deaths. OBJECTIVES: to compare ABR estimates in terms of death and disability-adjusted life-years (DALYs) in 2019 in Italy and in Western Europe (WE) by grading the infectious syndromes and the bacterial pathogens involved, with the aim to identify the most urgent healthcare needs in Italy. DESIGN: the estimates of the burden of ABR in 2019 in WE and Italy, extracted from the Measuring Infectious Causes and Resistance Outcomes for Burden Estimation (MICROBE) tool by the Institute for Health Metrics and Evaluation (IHME; Seattle, USA), reported deaths and DALYs associated with 33 bacterial pathogens across 12 infectious syndromes, as well as deaths and DALYs associated with and attributable to ABR for 23 bacteria and 86 pathogen-drug combinations. The comparison between WE and Italy was performed in steps. First, among the 12 groups of infectious syndromes from the Global Burden of Diseases (GBD) study 2019, the most impacting in terms of deaths and DALYs were ranked based on the magnitude of rates, and the corresponding ABR-associated burden was reported. Then, the burden of the leading pathogens (bacteria, viruses, fungi, and polymicrobial infections) for all infectious syndromes was compared between the two areas. Death and DALY rates associated with ABR were reported for each bacterium, together with the percentage of ABR-attributable burden. Although it is known that Italy is one of the WE countries with the largest share of elderly, crude rates were reported instead of age-standardized rates, in order to quantify the actual burden of ABR in the two ar

Published
2024

12. Unusual spin properties of InP wurtzite nanowires revealed by Zeeman splitting spectroscopy

Author

Tedeschi, D., De Luca, M., Junior, P. E. Faria, del Águila, A. Granados, Gao, Q., Tan, H. H., Scharf, B., Christianen, P. C. M., Jagadish, C., Fabian, J., and Polimeni, A.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

In this study, we present a complete experimental and theoretical investigation of the fundamental exciton Zeeman splitting in wurtzite InP nanowires. We determined the exciton gyromagnetic factor, $g_{exc}$, by magneto-photoluminescence spectroscopy using magnetic fields up to 29 T. We found that $g_{exc}$ is strongly anisotropic with values differing in excess of 50\% between the magnetic field oriented parallel and perpendicular to the nanowire long axis. Furthermore, for magnetic fields oriented along the nanowire axis, $g_{exc}$ is nearly three times larger than in bulk zincblende InP and it shows a marked sublinear dependence on the magnetic field, a common feature to other non-nitride III-V wurtzite nanowires but not properly understood. Remarkably, this nonlinearity originates from only one Zeeman branch characterized by a specific type of light polarization. All the experimental findings are modeled theoretically by a robust approach combining the $k \cdot p$ method with the envelope function approximation and including the electron-hole interaction. We revealed that the nonlinear features arise due to the coupling between Landau levels pertaining to the A (heavy-hole like) and B (light-hole like) valence bands of the wurtzite crystal structure. This general behavior is particularly relevant for the understanding of the spin properties of several wurtzite nanowires that host the set for the observation of topological phases potentially at the base of quantum computing platforms.

Published
2018
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14. Prophylactic surgery plus hyperthermic intraperitoneal chemotherapy (HIPEC CO2) versus standard surgery for gastric carcinoma at high risk of peritoneal carcinomatosis: short and long-term outcomes (GOETH STUDY)—a collaborative randomized controlled trial by ACOI, FONDAZIONE AIOM, SIC, SICE, and SICO

Author

Di Giorgio, A., Gerardi, C., Abatini, C., Melotti, G., Bonavina, L., Torri, V., Santullo, F., Garattini, S., De Luca, M., Rulli, Erica, Rulli, Eliana, and Pacelli, F.

Published
2022
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15. Overview of Dyslexia in Brazil

Author

Nico, M., primary, Belli, A., additional, Capovilla, F., additional, De Luca, M., additional, Guimarães, R., additional, De Lima, R., additional, Navas, A., additional, Roama-Alves, R., additional, Seabra, A., additional, Simi, L., additional, and De Souza, S., additional

Published
2022
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17. LAPAROSCOPIC REPAIR OF MORGAGNI HERNIA

Author

Morejón Ruiz, S, primary, De Luca, M, additional, Avilés Oliveros, A, additional, Medina Pedrique, M, additional, Casanova, A, additional, Cruz, A, additional, and García-Ureña, M A, additional

Published
2024
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18. HOW TO PERFORM A CRANIAL DISSECTION OF A RIVES-STOPPA

Author

Tuñón-Féquant, C I, primary, López-Monclus, J, additional, Blázquez-Hernando, L A, additional, Robin Valle de Lersundi, A, additional, Muñoz-Rodríguez, J, additional, Medina-Pedrique, M, additional, De Luca, M, additional, Avilés-Oliveros, A, additional, and García-Ureña, M A, additional

Published
2024
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19. COMPLETELY PRE-PERITONEAL E-MILOS FOR SUBXIPHOID EVENTRATION

Author

Urbani, A, primary, Lopez-Monclus, J, additional, Blazquez Hernando, L A, additional, Valle de Lersundi, A R, additional, Jodra, V Vaello, additional, Medina Pedrique, M, additional, De Luca, M, additional, Avilés Oliveros, A, additional, and Garcia-Urena, M A, additional

Published
2024
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21. An in-silico analysis reveals further evidence of an aggressive subset of lung carcinoids sharing molecular features of high-grade neuroendocrine neoplasms

Author

Pelosi, G, Melocchi, V, Dama, E, Hofman, P, De Luca, M, Albini, A, Gemelli, M, Ricotta, R, Papotti, M, La Rosa, S, Uccella, S, Harari, S, Sonzogni, A, Asiedu, M, Wigle, D, Bianchi, F, Pelosi, Giuseppe, Melocchi, Valentina, Dama, Elisa, Hofman, Paul, De Luca, Marco, Albini, Adriana, Gemelli, Maria, Ricotta, Riccardo, Papotti, Mauro, La Rosa, Stefano, Uccella, Silvia, Harari, Sergio, Sonzogni, Angelica, Asiedu, Michael K, Wigle, Dennis A, Bianchi, Fabrizio, Pelosi, G, Melocchi, V, Dama, E, Hofman, P, De Luca, M, Albini, A, Gemelli, M, Ricotta, R, Papotti, M, La Rosa, S, Uccella, S, Harari, S, Sonzogni, A, Asiedu, M, Wigle, D, Bianchi, F, Pelosi, Giuseppe, Melocchi, Valentina, Dama, Elisa, Hofman, Paul, De Luca, Marco, Albini, Adriana, Gemelli, Maria, Ricotta, Riccardo, Papotti, Mauro, La Rosa, Stefano, Uccella, Silvia, Harari, Sergio, Sonzogni, Angelica, Asiedu, Michael K, Wigle, Dennis A, and Bianchi, Fabrizio

Abstract

Little is known as to whether there may be any pathogenetic link between pulmonary carcinoids and neuroendocrine carcinomas (NECs). A gene signature we previously found to cluster pulmonary carcinoids, large cell neuroendocrine carcinoma (LCNEC) and small cell lung carcinoma (SCLC), and which encompassed MEN1, MYC, MYCL1, RICTOR, RB1, SDHA, SRC and TP53 mutations or copy number variations (CNVs), was used to reclassify an independent cohort of 54 neuroendocrine neoplasms (NENs) [31 typical carcinoids (TC), 11 atypical carcinoids (AC) and 12 SCLC], by means of transcriptome and mutation data. Unsupervised clustering analysis identified two histology-independent clusters, namely CL1 and CL2, where 17/42 (40.5%) carcinoids and all the SCLC samples fell into the latter. CL2 carcinoids affected survival adversely, were enriched in T to G transversions or T > C/C > T transitions in the context of specific mutational signatures, presented with at least 1.5-fold change (FC) increase of gene mutations including TSC2, SMARCA2, SMARCA4, ERBB4 and PTPRZ1, differed for gene expression and showed epigenetic changes in charge of MYC and MTORC1 pathways, cellular senescence, inflammation, high-plasticity cell state and immune system exhaustion. Similar results were also found in two other independent validation sets comprising 101 lung NENs (24 carcinoids, 21 SCLC and 56 LCNEC) and 30 carcinoids, respectively. We herein confirmed an unexpected sharing of molecular traits along the spectrum of lung NENs, with a subset of genomically distinct aggressive carcinoids sharing molecular features of high-grade neuroendocrine neoplasms.

Published
2024

22. Sensitivity and Specificity of Qualitative Visual Field Tests for Screening Visual Hemifield Deficits in Right-Brain-Damaged Stroke Patients

Author

De Luca, M, Zeri, F, Matano, A, Di Lorenzo, C, Ciurli, M, Mulas, M, Pollarini, V, Paolucci, S, Nardo, D, Ciurli, MP, De Luca, M, Zeri, F, Matano, A, Di Lorenzo, C, Ciurli, M, Mulas, M, Pollarini, V, Paolucci, S, Nardo, D, and Ciurli, MP

Abstract

A timely detection of visual hemifield deficits (VHFDs; hemianopias or quadrantanopias) is critical for both the diagnosis and treatment of stroke patients. The present study determined the sensitivity and specificity of four qualitative visual field tests, including face description, confrontation tests (finger wiggle), and kinetic boundary perimetry, to screen large and dense VHFDs in right-brain-damaged (RBD) stroke patients. Previously, the accuracy of qualitative visual field tests was examined in unselected samples of patients with heterogeneous aetiology, in which stroke patients represented a very small fraction. Building upon existing tests, we introduced some procedural ameliorations (incl. a novel procedure for kinetic boundary perimetry) and provided a scoresheet to facilitate the grading. The qualitative visual field tests’ outcome of 67 consecutive RBD stroke patients was compared with the standard automated perimetry (SAP; i.e., reference standard) outcome to calculate sensitivity and specificity, as well as positive and negative predictive values (PPV and NPV), both for each individual test and their combinations. The face description test scored the lowest sensitivity and NPV, while the kinetic boundary perimetry scored the highest. No test returned false positives. Combining the monocular static finger wiggle test (by quadrants) and the kinetic boundary perimetry returned the highest sensitivity and specificity, in line with previous studies, but with higher accuracy (100% sensitivity and specificity). These findings indicate that the combination of these two tests is a valid approach with RBD stroke patients, prompting referral for a formal visual field examination, and representing a quick, easy-to-perform, and inexpensive tool for improving their care and prognosis.

Published
2024

26. [CII] absorption and emission in the diffuse interstellar medium across the Galactic Plane

Author

Gerin, M., Ruaud, M., Goicoechea, J. R., Gusdorf, A., Godard, B., de Luca, M., Falgarone, E., Goldsmith, P. F., Lis, D. C., Menten, K. M., Neufeld, D., Phillips, T. G., and Liszt, H.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

Ionized carbon is the main gas-phase reservoir of carbon in the neutral diffuse interstellar medium and its 158 micron fine structure transition [CII] is the most important cooling line of the diffuse interstellar medium (ISM). We combine [CII] absorption and emission spectroscopy to gain an improved understanding of physical conditions in the different phases of the ISM. We present high resolution [CII] spectra obtained with the Herschel/HIFI instrument towards bright dust continuum sources regions in the Galactic plane, probing simultaneously the diffuse gas along the line of sight and the background high-mass star forming regions. These data are complemented by observations of the 492 and 809 GHz fine structure lines of atomic carbon and by medium spectral resolution spectral maps of the fine structure lines of atomic oxygen at 63 and 145 microns with Herschel/PACS. We show that the presence of foreground absorption may completely cancel the emission from the background source in medium spectral resolution data and that high spectral resolution spectra are needed to interpret the [CII] and [OI] emission and the [CII]/FIR ratio. This phenomenon may explain part of the [CII]/FIR deficit seen in external luminous infrared galaxies. The C+ and C excitation in the diffuse gas is consistent with a median pressure of 5900 Kcm-3 for a mean TK ~100 K. The knowledge of the gas density allows us to determine the filling factor of the absorbing gas along the selected lines of sight: the median value is 2.4 %, in good agreement with the CNM properties. The mean excitation temperature is used to derive the average cooling due to C+ in the Galactic plane : 9.5 x 10^{-26} erg/s/H. Along the observed lines of sight, the gas phase carbon abundance does not exhibit a strong gradient as a function of Galacto-centric radius and has a weighted average of C/H = 1.5 +/- 0.4 x 10^{-4}., Comment: 25 pages

Published
2014
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27. Widespread Rotationally-Hot Hydronium Ion in the Galactic Interstellar Medium

Author

Lis, D. C., Schilke, P., Bergin, E. A., Gerin, M., Black, J. H., Comito, C., De Luca, M., Godard, B., Higgins, R., Petit, F. Le, Pearson, J. C., Pellegrini, E. W., Phillips, T. G., and Yu, S.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present new observations of the (6,6) and (9,9) inversion transitions of the hydronium ion toward Sagittarius B2(N) and W31C. Sensitive observations toward Sagittarius B2(N) show that the high, ~ 500 K, rotational temperatures characterizing the population of the highly-excited metastable H3O+ rotational levels are present over a wide range of velocities corresponding to the Sagittarius B2 envelope, as well as the foreground gas clouds between the Sun and the source. Observations of the same lines toward W31C, a line of sight that does not intersect the Central Molecular Zone, but instead traces quiescent gas in the Galactic disk, also imply a high rotational temperature of ~ 380 K, well in excess of the kinetic temperature of the diffuse Galactic interstellar medium. While it is plausible that some fraction of the molecular gas may be heated to such high temperatures in the active environment of the Galactic center, characterized by high X-ray and cosmic ray fluxes, shocks and high degree of turbulence, this is unlikely in the largely quiescent environment of the Galactic disk clouds. We suggest instead that the highly-excited states of the hydronium ion are populated mainly by exoergic chemical formation processes and temperature describing the rotational level population does not represent the physical temperature of the medium. The same arguments may be applicable to other symmetric top rotors, such as ammonia. This offers a simple explanation to the long-standing puzzle of the presence of a pervasive, hot molecular gas component in the central region of the Milky Way. Moreover, our observations suggest that this is a universal process, not limited to the active environments associated with galactic nuclei., Comment: Accepted for publication in The Astrophysical Journal, 10 pages, 4 figures, 3 tables

Published
2014
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28. Three-row versus two-row circular staplers for left-sided colorectal anastomosis: a propensity score-matched analysis of the iCral 2 and 3 prospective cohorts

Author

Catarci, M, Guadagni, S, Masedu, F, Ruffo, G, Viola, M, Borghi, F, Baldazzi, G, Scatizzi, M, Pirozzi, F, Delrio, P, Garulli, G, Marini, P, Campagnacci, R, De Luca, R, Ficari, F, Sica, G, Scabini, S, Liverani, A, Caricato, M, Patriti, A, Mancini, S, Baiocchi, G, Santoro, R, Siquini, W, Guercioni, G, Basti, M, Pedrazzani, C, Totis, M, Carrara, A, Lucchi, A, Pavanello, M, Muratore, A, D'Ugo, S, Di Leo, A, Pignata, G, Elmore, U, Anania, G, Carlini, M, Corcione, F, Vettoretto, N, Longo, G, Sorrentino, M, Giuliani, A, Ferrari, G, Taglietti, L, Verzelli, A, Di Cosmo, M, Cavaliere, D, Milone, M, Rausei, S, Ciaccio, G, Tebala, G, Brisinda, G, Berti, S, Millo, P, Boni, L, Guerrieri, M, Persiani, R, Parini, D, Spinelli, A, Genna, M, Bottino, V, Coratti, A, Scala, D, Rivolta, U, Piccoli, M, Talarico, C, Roviello, F, Anastasi, A, Ettorre, G, Montuori, M, Mariani, P, de Manzini, N, Donini, A, Armellino, M, Feo, C, Guerriero, S, Costanzi, A, Marchesi, F, Cicetti, M, Ciano, P, Benedetti, M, Montemurro, L, Mattei, M, Belloni, E, Apa, D, Di Carlo, M, Clementi, M, Bertocchi, E, Masini, G, Altamura, A, Rubichi, F, Cianflocca, D, Migliore, M, Cassini, D, Pandolfini, L, Falsetto, A, Sciuto, A, Pace, U, Bucci, A, Monari, F, Attina, G, Maurizi, A, Simone, M, Giudici, F, Cianchi, F, Baldini, G, Sensi, B, Aprile, A, Soriero, D, Scarinci, A, Capolupo, G, Sisti, V, Ricci, M, Sagnotta, A, Molfino, S, Amodio, P, Cardinali, A, Cicconi, S, Marziali, I, Frazzini, D, Conti, C, Tamini, N, Braga, M, Motter, M, Tirone, G, Martorelli, G, Cacurri, A, Di Marco, C, Marsanic, P, Federico, N, Spampinato, M, Crepaz, L, Andreuccetti, J, Canfora, I, Maggi, G, Chiozza, M, Spoletini, D, Marcellinaro, R, Lisi, G, Bracale, U, Peltrini, R, Di Nuzzo, M, Botteri, E, Santoni, S, Stefanoni, M, Del Vecchio, G, Magistro, C, Ruggiero, S, Birindelli, A, Budassi, A, Zigiotto, D, Solaini, L, Ercolani, G, De Palma, G, Tenconi, S, Locurto, P, Di Cintio, A, Chiarello, M, Cariati, M, Gennai, A, Grivon, M, Cassinotti, E, Ortenzi, M, Biondi, A, De Luca, M, Carrano, F, Fior, F, Ferronetti, A, Giuliani, G, Marino, G, Bertoglio, C, Pecchini, F, Greco, V, Piagnerelli, R, Canonico, G, Colasanti, M, Pinotti, E, Carminati, R, Osenda, E, Graziosi, L, De Martino, C, Ioia, G, Pindozzi, F, Organetti, L, Monteleone, M, Dalmonte, G, La Gioia, G, Catarci M., Guadagni S., Masedu F., Ruffo G., Viola M. G., Borghi F., Baldazzi G., Scatizzi M., Pirozzi F., Delrio P., Garulli G., Marini P., Campagnacci R., De Luca R., Ficari F., Sica G., Scabini S., Liverani A., Caricato M., Patriti A., Mancini S., Baiocchi G. L., Santoro R., Siquini W., Guercioni G., Basti M., Pedrazzani C., Totis M., Carrara A., Lucchi A., Pavanello M., Muratore A., D'Ugo S., Di Leo A., Pignata G., Elmore U., Anania G., Carlini M., Corcione F., Vettoretto N., Longo G., Sorrentino M., Giuliani A., Ferrari G., Taglietti L., Verzelli A., Di Cosmo M., Cavaliere D., Milone M., Rausei S., Ciaccio G., Tebala G., Brisinda G., Berti S., Millo P., Boni L., Guerrieri M., Persiani R., Parini D., Spinelli A., Genna M., Bottino V., Coratti A., Scala D., Rivolta U., Piccoli M., Talarico C., Roviello F., Anastasi A., Ettorre G. M., Montuori M., Mariani P., de Manzini N., Donini A., Armellino M. F., Feo C., Guerriero S., Costanzi A., Marchesi F., Cicetti M., Ciano P., Benedetti M., Montemurro L. A., Mattei M. S., Belloni E., Apa D., Di Carlo M., Clementi M., Bertocchi E., Masini G., Altamura A., Rubichi F., Cianflocca D., Migliore M., Cassini D., Pandolfini L., Falsetto A., Sciuto A., Pace U., Bucci A. F., Monari F., Attina G. M., Maurizi A., Simone M., Giudici F., Cianchi F., Baldini G., Sensi B., Aprile A., Soriero D., Scarinci A., Capolupo G. T., Sisti V., Ricci M. L., Sagnotta A., Molfino S., Amodio P., Cardinali A., Cicconi S., Marziali I., Frazzini D., Conti C., Tamini N., Braga M., Motter M., Tirone G., Martorelli G., Cacurri A., Di Marco C., Marsanic P., Federico N. S. P., Spampinato M., Crepaz L., Andreuccetti J., Canfora I., Maggi G., Chiozza M., Spoletini D., Marcellinaro R., Lisi G., Bracale U., Peltrini R., Di Nuzzo M. M., Botteri E., Santoni S., Stefanoni M., Del Vecchio G., Magistro C., Ruggiero S., Birindelli A., Budassi A., Zigiotto D., Solaini L., Ercolani G., De Palma G. D., Tenconi S., Locurto P., Di Cintio A., Chiarello M. M., Cariati M., Gennai A., Grivon M., Cassinotti E., Ortenzi M., Biondi A., De Luca M., Carrano F., Fior F., Ferronetti A., Giuliani G., Marino G., Bertoglio C. L., Pecchini F., Greco V., Piagnerelli R., Canonico G., Colasanti M., Pinotti E., Carminati R., Osenda E., Graziosi L., De Martino C., Ioia G., Pindozzi F., Organetti L., Monteleone M., Dalmonte G., La Gioia G., Catarci, M, Guadagni, S, Masedu, F, Ruffo, G, Viola, M, Borghi, F, Baldazzi, G, Scatizzi, M, Pirozzi, F, Delrio, P, Garulli, G, Marini, P, Campagnacci, R, De Luca, R, Ficari, F, Sica, G, Scabini, S, Liverani, A, Caricato, M, Patriti, A, Mancini, S, Baiocchi, G, Santoro, R, Siquini, W, Guercioni, G, Basti, M, Pedrazzani, C, Totis, M, Carrara, A, Lucchi, A, Pavanello, M, Muratore, A, D'Ugo, S, Di Leo, A, Pignata, G, Elmore, U, Anania, G, Carlini, M, Corcione, F, Vettoretto, N, Longo, G, Sorrentino, M, Giuliani, A, Ferrari, G, Taglietti, L, Verzelli, A, Di Cosmo, M, Cavaliere, D, Milone, M, Rausei, S, Ciaccio, G, Tebala, G, Brisinda, G, Berti, S, Millo, P, Boni, L, Guerrieri, M, Persiani, R, Parini, D, Spinelli, A, Genna, M, Bottino, V, Coratti, A, Scala, D, Rivolta, U, Piccoli, M, Talarico, C, Roviello, F, Anastasi, A, Ettorre, G, Montuori, M, Mariani, P, de Manzini, N, Donini, A, Armellino, M, Feo, C, Guerriero, S, Costanzi, A, Marchesi, F, Cicetti, M, Ciano, P, Benedetti, M, Montemurro, L, Mattei, M, Belloni, E, Apa, D, Di Carlo, M, Clementi, M, Bertocchi, E, Masini, G, Altamura, A, Rubichi, F, Cianflocca, D, Migliore, M, Cassini, D, Pandolfini, L, Falsetto, A, Sciuto, A, Pace, U, Bucci, A, Monari, F, Attina, G, Maurizi, A, Simone, M, Giudici, F, Cianchi, F, Baldini, G, Sensi, B, Aprile, A, Soriero, D, Scarinci, A, Capolupo, G, Sisti, V, Ricci, M, Sagnotta, A, Molfino, S, Amodio, P, Cardinali, A, Cicconi, S, Marziali, I, Frazzini, D, Conti, C, Tamini, N, Braga, M, Motter, M, Tirone, G, Martorelli, G, Cacurri, A, Di Marco, C, Marsanic, P, Federico, N, Spampinato, M, Crepaz, L, Andreuccetti, J, Canfora, I, Maggi, G, Chiozza, M, Spoletini, D, Marcellinaro, R, Lisi, G, Bracale, U, Peltrini, R, Di Nuzzo, M, Botteri, E, Santoni, S, Stefanoni, M, Del Vecchio, G, Magistro, C, Ruggiero, S, Birindelli, A, Budassi, A, Zigiotto, D, Solaini, L, Ercolani, G, De Palma, G, Tenconi, S, Locurto, P, Di Cintio, A, Chiarello, M, Cariati, M, Gennai, A, Grivon, M, Cassinotti, E, Ortenzi, M, Biondi, A, De Luca, M, Carrano, F, Fior, F, Ferronetti, A, Giuliani, G, Marino, G, Bertoglio, C, Pecchini, F, Greco, V, Piagnerelli, R, Canonico, G, Colasanti, M, Pinotti, E, Carminati, R, Osenda, E, Graziosi, L, De Martino, C, Ioia, G, Pindozzi, F, Organetti, L, Monteleone, M, Dalmonte, G, La Gioia, G, Catarci M., Guadagni S., Masedu F., Ruffo G., Viola M. G., Borghi F., Baldazzi G., Scatizzi M., Pirozzi F., Delrio P., Garulli G., Marini P., Campagnacci R., De Luca R., Ficari F., Sica G., Scabini S., Liverani A., Caricato M., Patriti A., Mancini S., Baiocchi G. L., Santoro R., Siquini W., Guercioni G., Basti M., Pedrazzani C., Totis M., Carrara A., Lucchi A., Pavanello M., Muratore A., D'Ugo S., Di Leo A., Pignata G., Elmore U., Anania G., Carlini M., Corcione F., Vettoretto N., Longo G., Sorrentino M., Giuliani A., Ferrari G., Taglietti L., Verzelli A., Di Cosmo M., Cavaliere D., Milone M., Rausei S., Ciaccio G., Tebala G., Brisinda G., Berti S., Millo P., Boni L., Guerrieri M., Persiani R., Parini D., Spinelli A., Genna M., Bottino V., Coratti A., Scala D., Rivolta U., Piccoli M., Talarico C., Roviello F., Anastasi A., Ettorre G. M., Montuori M., Mariani P., de Manzini N., Donini A., Armellino M. F., Feo C., Guerriero S., Costanzi A., Marchesi F., Cicetti M., Ciano P., Benedetti M., Montemurro L. A., Mattei M. S., Belloni E., Apa D., Di Carlo M., Clementi M., Bertocchi E., Masini G., Altamura A., Rubichi F., Cianflocca D., Migliore M., Cassini D., Pandolfini L., Falsetto A., Sciuto A., Pace U., Bucci A. F., Monari F., Attina G. M., Maurizi A., Simone M., Giudici F., Cianchi F., Baldini G., Sensi B., Aprile A., Soriero D., Scarinci A., Capolupo G. T., Sisti V., Ricci M. L., Sagnotta A., Molfino S., Amodio P., Cardinali A., Cicconi S., Marziali I., Frazzini D., Conti C., Tamini N., Braga M., Motter M., Tirone G., Martorelli G., Cacurri A., Di Marco C., Marsanic P., Federico N. S. P., Spampinato M., Crepaz L., Andreuccetti J., Canfora I., Maggi G., Chiozza M., Spoletini D., Marcellinaro R., Lisi G., Bracale U., Peltrini R., Di Nuzzo M. M., Botteri E., Santoni S., Stefanoni M., Del Vecchio G., Magistro C., Ruggiero S., Birindelli A., Budassi A., Zigiotto D., Solaini L., Ercolani G., De Palma G. D., Tenconi S., Locurto P., Di Cintio A., Chiarello M. M., Cariati M., Gennai A., Grivon M., Cassinotti E., Ortenzi M., Biondi A., De Luca M., Carrano F., Fior F., Ferronetti A., Giuliani G., Marino G., Bertoglio C. L., Pecchini F., Greco V., Piagnerelli R., Canonico G., Colasanti M., Pinotti E., Carminati R., Osenda E., Graziosi L., De Martino C., Ioia G., Pindozzi F., Organetti L., Monteleone M., Dalmonte G., and La Gioia G.

Abstract

Background: Since most anastomoses after left-sided colorectal resections are performed with a circular stapler, any technological change in stapling devices may influence the incidence of anastomotic adverse events. The aim of the present study was to analyze the effect of a three-row circular stapler on anastomotic leakage and related morbidity after left-sided colorectal resections. Materials and methods: A circular stapled anastomosis was performed in 4255 (50.9%) out of 8359 patients enrolled in two prospective multicenter studies in Italy, and, after exclusion criteria to reduce heterogeneity, 2799 (65.8%) cases were retrospectively analyzed through a 1:1 propensity score-matching model including 20 covariates relative to patient characteristics, to surgery and to perioperative management. Two well-balanced groups of 425 patients each were obtained: group (A) – true population of interest, anastomosis performed with a three-row circular stapler; group (B) – control population, anastomosis performed with a two-row circular stapler. The target of inferences was the average treatment effect in the treated (ATT). The primary endpoints were overall and major anastomotic leakage and overall anastomotic bleeding; the secondary endpoints were overall and major morbidity and mortality rates. The results of multiple logistic regression analyses for the outcomes, including the 20 covariates selected for matching, were presented as odds ratios (OR) and 95% confidence intervals (95% CI). Results: Group A versus group B showed a significantly lower risk of overall anastomotic leakage (2.1 vs. 6.1%; OR 0.33; 95% CI 0.15–0.73; P = 0.006), major anastomotic leakage (2.1 vs. 5.2%; OR 0.39; 95% CI 0.17–0.87; P = 0.022), and major morbidity (3.5 vs. 6.6% events; OR 0.47; 95% CI 0.24–0.91; P = 0.026). Conclusion: The use of three-row circular staplers independently reduced the risk of anastomotic leakage and related morbidity after left-sided colorectal resection. Twenty-five pati

Published
2023

29. Far-Infrared Spectroscopy of the Galactic Center. Hot Molecular Gas: Shocks versus Radiation near SgrA*

Author

Goicoechea, Javier R., Etxaluze, M., Cernicharo, J., Gerin, M., Neufeld, D. A., Contursi, A., Bell, T. A., De Luca, M., Encrenaz, P., Indriolo, N., Lis, D. C., Polehampton, E. T., and Sonnentrucker, P.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present a 52-671um spectral scan toward SgrA* taken with the PACS and SPIRE spectrometers onboard Herschel. The achieved angular resolution allows us to separate, for the first time at far-IR wavelengths, the emission toward the central cavity (gas in the inner central parsec of the galaxy) from that of the surrounding circum-nuclear disk. The spectrum toward SgrA* is dominated by strong [OIII], [OI], [CII], [NIII], [NII], and [CI] fine structure lines (in decreasing order of luminosity) arising in gas irradiated by UV-photons from the central stellar cluster. In addition, rotationally excited lines of 12CO (from J=4-3 to 24-23), 13CO, H2O, OH, H3O+, HCO+ and HCN, as well as ground-state absorption lines of OH+, H2O+, H3O+, CH+, H2O, OH, HF, CH and NH are detected. The excitation of the 12CO ladder is consistent with a hot isothermal component at Tk ~ 10^{3.1} K and n(H2)< 10^4 cm^{-3}. It is also consistent with a distribution of temperature components at higher density with most CO at Tk<300 K. The detected molecular features suggest that, at present, neither very enhanced X-ray, nor cosmic-ray fluxes play a dominant role in the heating of the hot molecular gas. The hot CO component (either the bulk of the CO column or just a small fraction depending on the above scenario) results from a combination of UV- and shock-driven heating. If irradiated dense clumps/clouds do not exist, shocks likely dominate the heating of the hot molecular gas. This is consistent with the high-velocity gas detected toward SgrA*., Comment: 20 pages, 3 figures, 1 table. Accepted for publication in Astrophysical Journal Letters

Published
2013
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30. Hydrogen chloride in diffuse interstellar clouds along the line of sight to W31C (G10.6-0.4)

Author

Monje, R. R., Lis, D. C., Roueff, E., Gerin, M., De Luca, M., Neufeld, D. A., Godard, B., and Phillips, T. G.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We report the detection of hydrogen chloride, HCl, in diffuse molecular clouds on the line of sight towards the star-forming region W31C (G10.6-0.4). The J = 1-0 lines of the two stable HCl isotopologues, H35Cl and H37Cl, are observed using the 1b receiver of the Heterodyne Instrument for the Far-Infrared (HIFI) aboard the Herschel Space Observatory. The HCl line is detected in absorption, over a wide range of velocities associated with diffuse clouds along the line of sight to W31C. The analysis of the absorption strength yields a total HCl column density of few 10^13 cm^-2, implying that HCl accounts for ~0.6 % of the total gasphase chlorine, which exceeds by a factor of ~6 the theoretical model predictions. This result is comparable to those obtained from the chemically-related species H2Cl+ and HCl+, for which large column densities have also been reported on the same line of sight. The source of discrepancy between models and observations is still unknown; however, the detection of these Cl-bearing molecules, provides key constraints for the chlorine chemistry in the diffuse gas.

Published
2013
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31. Spitzer-IRAC survey of molecular jets in Vela-D

Author

Giannini, T., Lorenzetti, D., De Luca, M., Strafella, F., Elia, D., Maiolo, B., Marengo, M., Maruccia, Y., Massi, F., Nisini, B., Olmi, L., Salama, A., and Smith, H. A.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present a survey of H2 jets from young protostars in the Vela-D molecular cloud (VMR-D), based on Spitzer -IRAC data between 3.6 and 8.0 micron. Our search has led to the identification of 15 jets and about 70 well aligned knots within 1.2 squared degree. We compare the IRAC maps with observations of the H2 1-0 S(1) line at 2.12 micron, with a Spitzer-MIPS map at 24 and 70 micron, and with a map of the dust continuum emission at 1.2 mm. We find a association between molecular jets and dust peaks. The jet candidate exciting sources have been searched for in the published catalog of the Young Stellar Objects of VMR-D. We selected all the sources of Class II or earlier which are located close to the jet center and aligned with it.The association between jet and exciting source was validated by estimating the differential extinction between the jet opposite lobes. We are able to find a best-candidate exciting source in all but two jets. Four exciting sources are not (or very barely) observed at wavelengths shorter than 24 micron, suggesting they are very young protostars. Three of them are also associated with the most compact jets. The exciting source Spectral Energy Distributions have been modeled by means of the photometric data between 1.2 micron and 1.2 mm. From SEDs fits we derive the main source parameters, which indicate that most of them are low-mass protostars. A significant correlation is found between the projected jet length and the [24] - [70] color, which is consistent with an evolutionary scenario according to which shorter jets are associated with younger sources. A rough correlation is found between IRAC line cooling and exciting source bolometric luminosity, in agreement with the previous literature. The emerging trend suggests that mass loss and mass accretion are tightly related phenomena and that both decrease with time., Comment: Accepted by The Astrophysical Journal

Published
2013
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33. Water absorption in Galactic translucent clouds: conditions and history of the gas derived from Herschel/HIFI PRISMAS observations

Author

Flagey, N., Goldsmith, P. F., Lis, D. C., Gerin, M., Neufeld, D., Sonnentrucker, P., De Luca, M., Godard, B., Goicoechea, J. R., Monje, R., and Phillips, T. G.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present Herschel/HIFI observations of nine transitions of \hho and \hheo towards six high-mass star-forming regions, obtained as part of the PRISMAS Key Program. Water vapor in translucent clouds is detected in absorption along every sightline. We derive the column density of \hho or \hheo for the lower energy level of each transition observed. The total water column density is about a few $10^{13} \rm{cm^{-2}}$. We find that the abundance of water relative to hydrogen nuclei is $1\times10^{-8}$ in agreement with models for oxygen chemistry with high cosmic ray ionization rates. Relative to \hh, the abundance of water is remarkably constant at $5\times10^{-8}$. The abundance of water in excited levels is at most 15%, implying that the excitation temperature $T_{ex}$ in the ground state transitions is below 10 K. The column densities derived from the two ortho ground state transitions indicates that $T_{ex}\simeq5$ K and that the density $n($\hh$)$ in the clouds is $\le10^4 \rm{cm^{-3}}$. For most clouds we derive a water ortho-to-para ratio consistent with the value of 3 expected in thermodynamic equilibrium in the high temperature limit. Two clouds with large column densities exhibit a ratio significantly below 3. This may argue that the history of water molecules includes a cold phase, either when the molecules were formed on cold grains, or when they later become at least partially thermalized with the cold gas ($\sim25$ K) in the shielded, low temperature regions of the clouds; evidently, they have not yet fully thermalized with the warmer ($\sim50$ K) translucent portions of the clouds., Comment: 32 pages, 86 figures, accepted for publication in ApJ

Published
2012
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34. Nitrogen hydrides in interstellar gas II. Analysis of Herschel/HIFI observations towards W49N and G10.6-0.4 (W31C)

Author

Persson, C. M., De Luca, M., Mookerjea, B., Olofsson, A. O. H., Black, J. H., Gerin, M., Herbst, E., Bell, T. A., Coutens, A., Godard, B., Goicoechea, J. R., Hassel, G. E., Hily-Blant, P., Menten, K. M., Muller, H. S. P, Pearson, J. C., and Yu, S.

Subjects
Astrophysics - Galaxy Astrophysics
Abstract

We have used the Herschel-HIFI instrument to observe interstellar nitrogen hydrides along the sight-lines towards W49N and G10.6-0.4 in order to elucidate the production pathways leading to nitrogen-bearing species in diffuse gas. All detections show absorption by foreground material over a wide range of velocities, as well as absorption associated directly with the hot-core source itself. As in the previously published observations towards G10.6-0.4, the NH, NH2 and NH3 spectra towards W49N show strikingly similar and non-saturated absorption features. We decompose the absorption of the foreground material towards W49N into different velocity components in order to investigate whether the relative abundances vary among the velocity components, and, in addition, we re-analyse the absorption lines towards G10.6-0.4 in the same manner. Abundances, with respect to molecular hydrogen, in each velocity component are estimated using CH. The analysis points to a co-existence of the nitrogen hydrides in diffuse or translucent interstellar gas with a high molecular fraction. Towards both sources, we find that NH is always at least as abundant as both o-NH2 and o-NH3, in sharp contrast to previous results for dark clouds. We find relatively constant N(NH)/N(o-NH3) and N(o-NH2)/N(o-NH3) ratios with mean values of 3.2 and 1.9 towards W49N, and 5.4 and 2.2 towards G10.6-0.4, respectively. The mean abundance of o-NH3 is ~2x10^-9 towards both sources. The nitrogen hydrides also show linear correlations with CN and HNC towards both sources, and looser correlations with CH. The upper limits on the NH+ abundance indicate column densities < 2 - 14 % of N(NH). Surprisingly low values of the ammonia ortho-to-para ratio are found in both sources, ~0.5 - 0.7 +- 0.1. This result cannot be explained by current models as we had expected to find a value of unity or higher., Comment: 35 pages, 74 figures

Published
2012
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35. The chemistry of C3 & Carbon Chain Molecules in DR21(OH)

Author

Mookerjea, B., Hassel, G., Gerin, M., Giesen, T., Stutzki, J., Herbst, E., Black, J. H., Goldsmith, P. F., Menten, K. M., Krelowski, J., De Luca, M., Csengeri, T., Joblin, C., Kazmierczak, M., Schmidt, M., Goicoechea, J. R., and Cernicharo, J.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

(Abridged) We have observed velocity resolved spectra of four ro-vibrational far-infrared transitions of C3 between the vibrational ground state and the low-energy nu2 bending mode at frequencies between 1654--1897 GHz using HIFI on board Herschel, in DR21(OH), a high mass star forming region. Several transitions of CCH and c-C3H2 have also been observed with HIFI and the IRAM 30m telescope. A gas and grain warm-up model was used to identify the primary C3 forming reactions in DR21(OH). We have detected C3 in absorption in four far-infrared transitions, P(4), P(10), Q(2) and Q(4). The continuum sources MM1 and MM2 in DR21(OH) though spatially unresolved, are sufficiently separated in velocity to be identified in the C3 spectra. All C3 transitions are detected from the embedded source MM2 and the surrounding envelope, whereas only Q(4) & P(4) are detected toward the hot core MM1. The abundance of C3 in the envelope and MM2 is \sim6x10^{-10} and \sim3x10^{-9} respectively. For CCH and c-C3H2 we only detect emission from the envelope and MM1. The observed CCH, C3, and c-C3H2 abundances are most consistent with a chemical model with n(H2)\sim5x10^{6} cm^-3 post-warm-up dust temperature, T_max =30 K and a time of \sim0.7-3 Myr. Post warm-up gas phase chemistry of CH4 released from the grain at t\sim 0.2 Myr and lasting for 1 Myr can explain the observed C3 abundance in the envelope of DR21(OH) and no mechanism involving photodestruction of PAH molecules is required. The chemistry in the envelope is similar to the warm carbon chain chemistry (WCCC) found in lukewarm corinos. The observed lower C3 abundance in MM1 as compared to MM2 and the envelope could be indicative of destruction of C3 in the more evolved MM1. The timescale for the chemistry derived for the envelope is consistent with the dynamical timescale of 2 Myr derived for DR21(OH) in other studies., Comment: 11 Pages, 6 figures, accepted for publication in A&A

Published
2012
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36. Multi-line detection of O2 toward rho Oph A

Author

Liseau, R., Goldsmith, P. F., Larsson, B., Pagani, L., Bergman, P., Bourlot, J. Le, Bell, T. A., Benz, A. O., Bergin, E. A., Bjerkeli, P., Black, J. H., Bruderer, S., Caselli, P., Caux, E., Chen, J. -H., de Luca, M., Encrenaz, P., Falgarone, E., Gerin, M., Goicoechea, J. R., Hjalmarson, Å., Hollenbach, D. J., Justtanont, K., Kaufman, M. J., Petit, F. Le, Li, D., Lis, D. C., Melnick, G. J., Nagy, Z., Olofsson, A. O. H., Olofsson, G., Roueff, E., Sandqvist, Aa., Snell, R. L., van der Tak, F. F. S., van Dishoeck, E. F., Vastel, C., Viti, S., and Yıldız, U. A.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

Models of pure gas-phase chemistry in well-shielded regions of molecular clouds predict relatively high levels of molecular oxygen, O2, and water, H2O. Contrary to expectation, the space missions SWAS and Odin found only very small amounts of water vapour and essentially no O2 in the dense star-forming interstellar medium. Only toward rho Oph A did Odin detect a weak line of O2 at 119 GHz in a beam size of 10 arcmin. A larger telescope aperture such as that of the Herschel Space Observatory is required to resolve the O2 emission and to pinpoint its origin. We use the Heterodyne Instrument for the Far Infrared aboard Herschel to obtain high resolution O2 spectra toward selected positions in rho Oph A. These data are analysed using standard techniques for O2 excitation and compared to recent PDR-like chemical cloud models. The 487.2GHz line was clearly detected toward all three observed positions in rho Oph A. In addition, an oversampled map of the 773.8GHz transition revealed the detection of the line in only half of the observed area. Based on their ratios, the temperature of the O2 emitting gas appears to vary quite substantially, with warm gas (> 50 K) adjacent to a much colder region, where temperatures are below 30 K. The exploited models predict O2 column densities to be sensitive to the prevailing dust temperatures, but rather insensitive to the temperatures of the gas. In agreement with these model, the observationally determined O2 column densities seem not to depend strongly on the derived gas temperatures, but fall into the range N(O2) = (3 to >6)e15/cm^2. Beam averaged O2 abundances are about 5e-8 relative to H2. Combining the HIFI data with earlier Odin observations yields a source size at 119 GHz of about 4 - 5 arcmin, encompassing the entire rho Oph A core., Comment: 10 pages, 8 figures intended for publication in A&A

Published
2012
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37. Comparative study of CH+ and SH+ absorption lines observed towards distant star-forming regions

Author

Godard, Benjamin, Falgarone, E., Gerin, M., Lis, D. C., De Luca, M., Black, J. H., Goicoechea, J. R., Cernicharo, J., Neufeld, D. A., Menten, K. M., and Emprechtinger, M.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

Aims. The HIFI instrument onboard Herschel has allowed high spectral resolution and sensitive observations of ground-state transi- tions of three molecular ions: the methylidyne cation CH+, its isotopologue 13CH+, and sulfanylium SH+. Because of their unique chemical properties, a comparative analysis of these cations provides essential clues to the link between the chemistry and dynamics of the diffuse interstellar medium. Methods. The CH+, 13CH+, and SH+ lines are observed in absorption towards the distant high-mass star-forming regions (SFRs) DR21(OH), G34.3+0.1, W31C, W33A, W49N, and W51, and towards two sources close to the Galactic centre, SgrB2(N) and SgrA*+50. All sight lines sample the diffuse interstellar matter along pathlengths of several kiloparsecs across the Galactic Plane. In order to compare the velocity structure of each species, the observed line profiles were deconvolved from the hyperfine structure of the SH+ transition and the CH+, 13CH+, and SH+ spectra were independently decomposed into Gaussian velocity components. To analyse the chemical composition of the foreground gas, all spectra were divided, in a second step, into velocity intervals over which the CH+, 13CH+, and SH+ column densities and abundances were derived. Results. SH+ is detected along all observed lines of sight, with a velocity structure close to that of CH+ and 13CH+. The linewidth distributions of the CH+, SH+, and 13CH+ Gaussian components are found to be similar. These distributions have the same mean (<\delta\u{psion}> ~ 4.2 km s-1) and standard deviation (\sigma(\delta\u{psion}) ~ 1.5 km s-1). This mean value is also close to that of the linewidth distribution of the CH+ visible transitions detected in the solar neighbourhood. We show that the lack of absorption components narrower than 2 km s-1 is not an artefact caused by noise: the CH+, 13CH+, and SH+ line profiles are therefore statistically broader than those of most species detected in absorption in diffuse interstellar gas (e. g. HCO+, CH, or CN). The SH+/CH+ column density ratio observed in the components located away from the Galactic centre spans two orders of magnitude and correlates with the CH+ abundance. Conversely, the ratio observed in the components close to the Galactic centre varies over less than one order of magnitude with no apparent correlation with the CH+ abundance. The observed dynamical and chemical properties of SH+ and CH+ are proposed to trace the ubiquitous process of turbulent dissipation, in shocks or shears, in the diffuse ISM and the specific environment of the Galactic centre regions.

Published
2012
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38. Nitrogen hydrides in interstellar gas: Herschel/HIFI observations towards G10.6-0.4 (W31C)

Author

Persson, C. M., Black, J. H., Cernicharo, J., Goicoechea, J. R., Hassel, G. E., Herbst, E., Gerin, M., De Luca, M., Bell, T. A., Coutens, A., Falgarone, E., Goldsmith, P. F., Gupta, H., Kazmierczak, M., Lis, D. C., Mookerjea, B., Neufeld, D. A., Pearson, J., Phillips, T. G., Sonnentrucker, P., Stutzki, J., Vastel, C., Yu, S., Boulanger, F., Dartois, E., Encrenaz, P., Geballe, T. R., Giesen, T., Godard, B., Gry, C., Hennebelle, P., Hily-Blant, P., Joblin, C., Kolos, R., Krelowski, J., Martin-Pintado, J., Menten, K., Monje, R., Perault, M., Plume, R., Salez, M., Schlemmer, S., Schmidt, M., Teyssier, D., Peron, I., Cais, P., Gaufre, P., Cros, A., Ravera, L., Morris, P., Lord, S., and Planesas, P.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

The HIFI instrument on board the Herschel Space Observatory has been used to observe interstellar nitrogen hydrides along the sight-line towards G10.6-0.4 in order to improve our understanding of the interstellar chemistry of nitrogen. We report observations of absorption in NH N=1-0, J=2-1 and ortho-NH2 1_1,1-0_0,0. We also observed ortho-NH3 1_0-0_0, and 2_0-1_0, para-NH3 2_1-1_1, and searched unsuccessfully for NH+. All detections show emission and absorption associated directly with the hot-core source itself as well as absorption by foreground material over a wide range of velocities. All spectra show similar, non-saturated, absorption features, which we attribute to diffuse molecular gas. Total column densities over the velocity range 11-54 km/s are estimated. The similar profiles suggest fairly uniform abundances relative to hydrogen, approximately 6*10^-9, 3*10^-9, and 3*10^-9 for NH, NH2, and NH3, respectively. These abundances are discussed with reference to models of gas-phase and surface chemistry., Comment: 5 pages, 3 figures, 2 online pages with 2 figures. Accepted for publication in A&A July 6 (Herschel/HIFI special issue)

Published
2010
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39. Detection of hydrogen fluoride absorption in diffuse molecular clouds with Herschel/HIFI: a ubiquitous tracer of molecular gas

Author

Sonnentrucker, P., Neufeld, D. A., Phillips, T. G., Gerin, M., Lis, D. C., De Luca, M., Goicoechea, J. R., Black, J. H., Bell, T. A., Boulanger, F., Cernicharo, J., Coutens, A., Dartois, E., Kazmierczak, M., Encrenaz, P., Falgarone, E., Geballe, T. R., Giesen, T., Godard, B., Goldsmith, P. F., Gry, C., Gupta, H., Hennebelle, P., Herbst, E., Hily-Blant, P., Joblin, C., Kolos, R., Krelowski, J., Martın-Pintado, J., Menten, K. M., Monje, R., Mookerjea, B., Pearson, J., Perault, M., Persson, C. M., Plume, R., Salez, M., Schlemmer, S., Schmidt, M., Stutzki, J., Teyssier, D., Vastel, C., Yu, S., Caux, E., Gusten, R., Hatch, W. A., Klein, T., Mehdi, I., Morris, P., and Ward, J. S.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We discuss the detection of absorption by interstellar hydrogen fluoride (HF) along the sight line to the submillimeter continuum sources W49N and W51. We have used Herschel's HIFI instrument in dual beam switch mode to observe the 1232.4762 GHz J = 1 - 0 HF transition in the upper sideband of the band 5a receiver. We detected foreground absorption by HF toward both sources over a wide range of velocities. Optically thin absorption components were detected on both sight lines, allowing us to measure - as opposed to obtain a lower limit on - the column density of HF for the first time. As in previous observations of HF toward the source G10.6-0.4, the derived HF column density is typically comparable to that of water vapor, even though the elemental abundance of oxygen is greater than that of fluorine by four orders of magnitude. We used the rather uncertain N(CH)-N(H2) relationship derived previously toward diffuse molecular clouds to infer the molecular hydrogen column density in the clouds exhibiting HF absorption. Within the uncertainties, we find that the abundance of HF with respect to H2 is consistent with the theoretical prediction that HF is the main reservoir of gas-phase fluorine for these clouds. Thus, hydrogen fluoride has the potential to become an excellent tracer of molecular hydrogen, and provides a sensitive probe of clouds of small H2 column density. Indeed, the observations of hydrogen fluoride reported here reveal the presence of a low column density diffuse molecular cloud along the W51 sight line, at an LSR velocity of ~ 24kms-1, that had not been identified in molecular absorption line studies prior to the launch of Herschel., Comment: 4 pages, 3 figures, A&A Letter special issue, accepted on 07/13/2010

Published
2010
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40. Herschel/HIFI measurements of the ortho/para ratio in water towards Sagittarius B2(M) and W31C

Author

Lis, D. C., Phillips, T. G., Goldsmith, P. F., Neufeld, D. A., Herbst, E., Comito, C., Schilke, P., Müller, H. S. P., Bergin, E. A., Gerin, M., Bell, T. A., Emprechtinger, M., Black, J. H., Blake, G. A., Boulanger, F., Cabrit, S., Caux, E., Ceccarelli, C., Cernicharo, J., Coutens, A., Crockett, N. R., Daniel, F., Dartois, E., De Luca, M., Dubernet, M. -L., Encrenaz, P., Falgarone, E., Geballe, T. R., Godard, B., Giesen, T. F., Goicoechea, J. R., Gry, C., Gupta, H., Hennebelle, P., Hily-Blant, P., Kołos, R., Krełowski, J., Joblin, C., Johnstone, D., Kaźmierczak, M., Lord, S. D., Maret, S., Martin, P. G., Martín-Pintado, J., Melnick, G. J., Menten, K. M., Monje, R., Mookerjea, B., Morris, P., Murphy, J. A., Ossenkopf, V., Pagani, L., Pearson, J. C., Pérault, M., Persson, C., Plume, R., Qin, S. -L., Salez, M., Schlemmer, S., Schmidt, M., Sonnentrucker, P., Stutzki, J., Teyssier, D., Trappe, N., van der Tak, F. F. S., Vastel, C., Wang, S., Yorke, H. W., Yu, S., Zmuidzinas, J., Boogert, A., Erickson, N., Karpov, A., Kooi, J., Maiwald, F. W., Schieder, R., and Zaal, P.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present Herschel/HIFI observations of the fundamental rotational transitions of ortho- and para-H$_2^{16}$O and H$_2^{18}$O in absorption towards Sagittarius~B2(M) and W31C. The ortho/para ratio in water in the foreground clouds on the line of sight towards these bright continuum sources is generally consistent with the statistical high-temperature ratio of 3, within the observational uncertainties. However, somewhat unexpectedly, we derive a low ortho/para ratio of $2.35 \pm 0.35$, corresponding to a spin temperature of $\sim$27~K, towards Sagittarius~B2(M) at velocities of the expanding molecular ring. Water molecules in this region appear to have formed with, or relaxed to, an ortho/para ratio close to the value corresponding to the local temperature of the gas and dust., Comment: Accepted for publication in A&A, HIFI Special Issue; 5 pages, 3 figures

Published
2010
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41. Herschel/HIFI observations of interstellar OH+ and H2O+ towards W49N: a probe of diffuse clouds with a small molecular fraction

Author

Neufeld, D. A., Goicoechea, J. R., Sonnentrucker, P., Black, J. H., Pearson, J., Yu, S., Phillips, T. G., Lis, D. C., De Luca, M., Herbst, E., Rimmer, P., Gerin, M., Bell, T. A., Boulanger, F., Cernicharo, J., Coutens, A., Dartois, E., Kazmierczak, M., Encrenaz, P., Falgarone, E., Geballe, T. R., Giesen, T., Godard, B., Goldsmith, P. F., Gry, C., Gupta, H., Hennebelle, P., Hily-Blant, P., Joblin, C., Kołos, R., Krełowski, J., Martın-Pintado, J., Menten, K. M., Monje, R., Mookerjea, B., Perault, M., Persson, C., Plume, R., Salez, M., Schlemmer, S., Schmidt, M., Stutzki, J., Teyssier, D., Vastel, C., Cros, A., Klein, K., Lorenzani, A., Philipp, S., Samoska, L. A., Shipman, R., Tielens, A. G. G. M., Szczerba, R., and Zmuidzinas, J.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We report the detection of absorption by interstellar hydroxyl cations and water cations, along the sight-line to the bright continuum source W49N. We have used Herschel's HIFI instrument, in dual beam switch mode, to observe the 972 GHz N = 1 - 0 transition of OH+ and the 1115 GHz 1(11) - 0(00) transition of ortho-H2O+. The resultant spectra show absorption by ortho-H2O+, and strong absorption by OH+, in foreground material at velocities in the range 0 to 70 km/s with respect to the local standard of rest. The inferred OH+/H2O+ abundance ratio ranges from ~ 3 to ~ 15, implying that the observed OH+ arises in clouds of small molecular fraction, in the 2 - 8% range. This conclusion is confirmed by the distribution of OH+ and H2O+ in Doppler velocity space, which is similar to that of atomic hydrogen, as observed by means of 21 cm absorption measurements, and dissimilar from that typical of other molecular tracers. The observed OH+/H abundance ratio of a few E-8 suggests a cosmic ray ionization rate for atomic hydrogen of (0.6 - 2.4) E-16 s-1, in good agreement with estimates inferred previously for diffuse clouds in the Galactic disk from observations of interstellar H3+ and other species., Comment: Accepted for publication in A&A Letters

Published
2010
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42. Excitation and Abundance of C3 in star forming cores:Herschel/HIFI observations of the sight-lines to W31C and W49N

Author

Mookerjea, B., Giesen, T., Stutzki, J., Cernicharo, J., Goicoechea, J. R., De Luca, M., Bell, T. A., Gupta, H., Gerin, M., Persson, C. M., Sonnentrucker, P., Makai, Z., Black, J., Boulanger, F., Coutens, A., Dartois, E., Encrenaz, P., Falgarone, E., Geballe, T., Godard, B., Goldsmith, P. F., Gry, C., Herbst, P. Hennebelle E., Hily-Blant, P., Joblin, C., Kaźmierczak, M., Kołos, R., Krełowski, J., Lis, D. C., Martin-Pintado, J., Menten, K. M., Monje, R., Pearson, J. C., Perault, M., Phillips, T. G., Plume, R., Salez, M., Schlemmer, S., Schmidt, M., Teyssier, D., Vastel, C., Yu, S., Dieleman, P., Güsten, R., Honingh, C. E., Morris, P., Roelfsema, P., Schieder, R., Tielens, A. G. G. M., and Zmuidzinas, J.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present spectrally resolved observations of triatomic carbon (C3) in several ro-vibrational transitions between the vibrational ground state and the low-energy nu2 bending mode at frequencies between 1654-1897 GHz along the sight-lines to the submillimeter continuum sources W31C and W49N, using Herschel's HIFI instrument. We detect C3 in absorption arising from the warm envelope surrounding the hot core, as indicated by the velocity peak position and shape of the line profile. The sensitivity does not allow to detect C3 absorption due to diffuse foreground clouds. From the column densities of the rotational levels in the vibrational ground state probed by the absorption we derive a rotation temperature (T_rot) of ~50--70 K, which is a good measure of the kinetic temperature of the absorbing gas, as radiative transitions within the vibrational ground state are forbidden. It is also in good agreement with the dust temperatures for W31C and W49N. Applying the partition function correction based on the derived T_rot, we get column densities N(C3) ~7-9x10^{14} cm^{-2} and abundance x(C3)~10^{-8} with respect to H2. For W31C, using a radiative transfer model including far-infrared pumping by the dust continuum and a temperature gradient within the source along the line of sight we find that a model with x(C3)=10^{-8}, T_kin=30-50 K, N(C3)=1.5 10^{15} cm^{-2} fits the observations reasonably well and provides parameters in very good agreement with the simple excitation analysis., Comment: Accepted for publication in Astronomy and Astrophysics (HIFI first results issue)

Published
2010
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43. The Spitzer-IRAC Point Source Catalog of the Vela-D Cloud

Author

Strafella, F., Elia, D., Campeggio, L., Giannini, T., Lorenzetti, D., Marengo, M., Smith, H. A., Fazio, G., De Luca, M., and Massi, F.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

This paper presents the observations of the Cloud D in the Vela Molecular Ridge, obtained with the IRAC camera onboard the Spitzer Space Telescope at the wavelengths \lambda = 3.6, 4.5, 5.8, 8.0 {\mu}m. A photometric catalog of point sources, covering a field of approximately 1.2 square degrees, has been extracted and complemented with additional available observational data in the millimeter region. Previous observations of the same region, obtained with the Spitzer MIPS camera in the photometric bands at 24 {\mu}m and 70 {\mu}m, have also been reconsidered to allow an estimate of the spectral slope of the sources in a wider spectral range. A total of 170,299 point sources, detected at the 5-sigma sensitivity level in at least one of the IRAC bands, have been reported in the catalog. There were 8796 sources for which good quality photometry was obtained in all four IRAC bands. For this sample, a preliminary characterization of the young stellar population based on the determination of spectral slope is discussed; combining this with diagnostics in the color-magnitude and color-color diagrams, the relative population of young stellar objects in the different evolutionary classes has been estimated and a total of 637 candidate YSOs have been selected. The main differences in their relative abundances have been highlighted and a brief account for their spatial distribution is given. The star formation rate has been also estimated and compared with the values derived for other star forming regions. Finally, an analysis of the spatial distribution of the sources by means of the two-point correlation function shows that the younger population, constituted by the Class I and flat-spectrum sources, is significantly more clustered than the Class II and III sources., Comment: Accepted by ApJ

Published
2010
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44. Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6-0.4

Author

Gerin, Maryvonne, De Luca, M., Black, John, Herbst, Eric, Goicoechea, Javier R., Falgarone, Edith, Godard, Benjamin, Pearson, John C., Lis, Dariucz C., Phillips, Thomas G., Bell, Thomas A., Sonnentrucker, Paule, Boulanger, Francois, Cernicharo, José, Coutens, Audrey, Dartois, Emmanuel, Encrenaz, Pierre, Giesen, Thomas, Goldsmith, Paul F., Gupta, Harshal, Gry, Cecile, Hennebelle, Patrick, Hily-Blant, Pierre, Joblin, Christine, Kazmierczak, Maja, Kolos, Robert, Krelowski, Jacek, Martin-Pintado, Jesus, Monje, Raquel, Mookerjea, Bhaswati, Pérault, Michel, Persson, Carina, Plume, René, Rimmer, Paul B., Salez, Morvan, Schmidt, Mirisloaw, Teyssier, David, Vastel, Charlotte, Yu, Shan Shan, Contursi, Alessandra, Menten, Karl, Geballe, Thomas, Schlemmer, Stephan, Shipman, Russ, Tielens, Alexander G. G. M., Philipp-May, Sabine, Cros, Alain, Zmuidzinas, Jonas, Samoska, L. A, Klein, K., Neufeld, D. A., Lorenzani, A., and Stutzki, Jürgen

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We report the detection of absorption lines by the reactive ions OH+, H2O+ and H3O+ along the line of sight to the submillimeter continuum source G10.6$-$0.4 (W31C). We used the Herschel HIFI instrument in dual beam switch mode to observe the ground state rotational transitions of OH+ at 971 GHz, H2O+ at 1115 and 607 GHz, and H3O+ at 984 GHz. The resultant spectra show deep absorption over a broad velocity range that originates in the interstellar matter along the line of sight to G10.6$-$0.4 as well as in the molecular gas directly associated with that source. The OH+ spectrum reaches saturation over most velocities corresponding to the foreground gas, while the opacity of the H2O+ lines remains lower than 1 in the same velocity range, and the H3O+ line shows only weak absorption. For LSR velocities between 7 and 50 kms$^{-1}$ we estimate total column densities of $N$(OH+) $> 2.5 \times 10^{14}$ cm$^{-2}$, $N$(H2O+) $\sim 6 \times 10^{13}$ cm$^{-2}$ and $N$(H3O+) $\sim 4.0 \times 10^{13}$ cm$^{-2}$. These detections confirm the role of O$^+$ and OH$^+$ in initiating the oxygen chemistry in diffuse molecular gas and strengthen our understanding of the gas phase production of water. The high ratio of the OH+ by the H2O+ column density implies that these species predominantly trace low-density gas with a small fraction of hydrogen in molecular form.

Published
2010
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45. Strong absorption by interstellar hydrogen fluoride: Herschel/HIFI observations of the sight-line to G10.6-0.4 (W31C)

Author

Neufeld, D. A., Sonnentrucker, P., Phillips, T. G., Lis, D. C., De Luca, M., Goicoechea, J. R., Black, J. H., Gerin, M., Bell, T., Boulanger, F., Cernicharo, J., Coutens, A., Dartois, E., Kazmierczak, M., Encrenaz, P., Falgarone, E., Geballe, T. R., Giesen, T., Godard, B., Goldsmith, P. F., Gry, C., Gupta, H., Hennebelle, P., Herbst, E., Hily-Blant, P., Joblin, C., Kolos, R., Krelowski, J., Martin-Pintado, J., Menten, K. M., Monje, R., Mookerjea, B., Pearson, J., Perault, M., Persson, C., Plume, R., Salez, M., Schlemmer, S., Schmidt, M., Stutzki, J., Teyssier, D., Vastel, C., Yu, S., Cais, P., Caux, E., Liseau, R., Morris, P., and Planesas, P.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We report the detection of strong absorption by interstellar hydrogen fluoride along the sight-line to the submillimeter continuum source G10.6-0.4 (W31C). We have used Herschel's HIFI instrument, in dual beam switch mode, to observe the 1232.4763 GHz J=1-0 HF transition in the upper sideband of the Band 5a receiver. The resultant spectrum shows weak HF emission from G10.6-0.4 at LSR velocities in the range -10 to -3 km/s, accompanied by strong absorption by foreground material at LSR velocities in the range 15 to 50 km/s. The spectrum is similar to that of the 1113.3430 GHz 1(11)-0(00) transition of para-water, although at some frequencies the HF (hydrogen fluoride) optical depth clearly exceeds that of para-H2O. The optically-thick HF absorption that we have observed places a conservative lower limit of 1.6E+14 cm-2 on the HF column density along the sight-line to G10.6-0.4. Our lower limit on the HF abundance, 6E-9 relative to hydrogen nuclei, implies that hydrogen fluoride accounts for between ~ 30 and 100% of the fluorine nuclei in the gas phase along this sight-line. This observation corroborates theoretical predictions that - because the unique thermochemistry of fluorine permits the exothermic reaction of F atoms with molecular hydrogen - HF will be the dominant reservoir of interstellar fluorine under a wide range of conditions., Comment: Accepted for publication in Astronomy and Astrophysics (Herschel special issue). This revised version corrects a typographic error in the HTML abstract, in which the lower limit on the HF abundance (should be 6E-9) was previously misstated. The abstract in the PDF version is correct and the latter has not been modified

Published
2010
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46. Pre-Main Sequence variables in the VMR-D : identification of T Tauri-like accreting protostars through Spitzer-IRAC variability

Author

Giannini, T., Lorenzetti, D., Elia, D., Strafella, F., De Luca, M., Fazio, G., Marengo, M., Nisini, B., and Smith, H. A.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We present a study of the infrared variability of young stellar objects by means of two Spitzer-IRAC images of the Vela Molecular Cloud D (VMR-D) obtained in observations separated in time by about six months. By using the same space-born IR instrumentation, this study eliminates all the unwanted effects usually unavoidable when comparing catalogs obtained from different instruments. The VMR-D map covers about 1.5 square deg. of a site where star formation is actively ongoing. We are interested in accreting pre-main sequence variables whose luminosity variations are due to intermittent events of disk accretion (i.e. active T Tauri stars and EXor type objects). The variable objects have been selected from a catalog of more than 170,000 sources detected at a S/N ratio > 5. We searched the sample of variables for ones whose photometric properties are close to those of known EXor's. These latter are monitored in a more systematic way than T Tauri stars and the mechanisms that regulate the observed phenomenology are exactly the same. Hence the modalities of the EXor behavior is adopted as driving criterium for selecting variables in general. We selected 19 bona fide candidates that constitute a well-defined sample of new variable targets for further investigation. Out of these, 10 sources present a Spitzer MIPS 24 micron counterpart, and have been classified as 3 Class I, 5 flat spectrum and 2 Class II objects, while the other 9 sources have spectral energy distribution compatible with phases older than Class I. This is consistent with what is known about the small sample of known EXor's, and suggests that the accretion flaring or EXor stage might come as a Class I/II transition. We present also new prescriptions that can be useful in future searches for accretion variables in large IR databases., Comment: 35 pages, 12 figures To appear in ApJ

Published
2009
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48. Atomic jets from class 0 sources detected by Spitzer: the case of L1448-C

Author

Dionatos, O., Nisini, B., Lopez, R. Garcia, Giannini, T., Davis, C. J., Smith, M. D., Ray, T. P., and De Luca, M.

Subjects
Astrophysics
Abstract

We present Spitzer-IRS spectra obtained along the molecular jet from the Class 0 source L1448-C (or L1448-mm). Atomic lines from the fundamental transitions of [FeII], [SiII] and [SI] have been detected showing, for the first time, the presence of an embedded atomic jet at low excitation. Pure rotational H$_2$ lines are also detected, and a decrease of the atomic/molecular emission ratio is observed within 1 arcmin from the driving source. Additional ground based spectra (UKIRT/UIST) were obtained to further constrain the H$_2$ excitation along the jet axis and, combined with the 0--0 lines, have been compared with bow-shock models. From the different line ratios, we find that the atomic gas is characterized by an electron density n_e ~ 200-1000 cm^{-3}, a temperature T_e < 2500 K and an ionization fraction <~ 10^{-2}; the excitation conditions of the atomic jet are thus very different from those found in more evolved Class I and Class II jets. We also infer that only a fraction (0.05-0.2) of Fe and Si is in gaseous form, indicating that dust still plays a major role in the depletion of refractory elements. A comparison with the SiO abundance recently derived in the jet from an analysis of several SiO sub-mm transitions, shows that the Si/SiO abundance ratio is ~100, and thus that most of the silicon released from grains by sputtering and grain-grain collisions remains in atomic form. Finally, estimates of the atomic and molecular mass flux rates have been derived: values of the order of ~10$^{-6}$ and ~10$^{-7}$ M$_{\sun}$ yr$^{-1}$ are inferred from the [SI]25$\mu$m and H$_2$ line luminosities, respectively. A comparison with the momentum flux of the CO molecular outflow suggests that the detected atomic jet has the power to drive the large scale outflow., Comment: 31 pages, 8 figures, ApJ in press

Published
2008
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49. Spitzer-MIPS survey of the young stellar content in the Vela Molecular Cloud-D

Author

Giannini, T., Lorenzetti, D., De Luca, M., Nisini, B., Marengo, M., Allen, L., Smith, H. A., Fazio, G., Massi, F., Elia, D., and Strafella, F.

Subjects
Astrophysics
Abstract

A new, unbiased Spitzer-MIPS imaging survey (~1.8 square degs) of the young stellar content of the Vela Molecular Cloud-D is presented. The survey is complete down to 5mJy and 250mJy at 24micron (mu) and 70mu, respectively. 849 sources are detected at 24mu and 52 of them also have a 70mu counterpart. The VMR-D region is one that we have already partially mapped in dust and gas millimeter emission, and we discuss the correlation between the Spitzer compact sources and the mm contours. About half of the 24mu sources are located inside the region delimited by the 12CO(1-0) contours (corresponding to only one third of the full area mapped with MIPS) with a consequent density increase of about 100% of the 24mu sources [four times for 70mu ones] moving from outside to inside the CO contours. About 400 sources have a 2MASS counterpart. So we have constructed a Ks vs. Ks-[24] diagram and identified the protostellar population. We find an excess of Class I sources in VMR-D in comparison with other star forming regions. This result is reasonably biased by the sensitivity limits, or, alternatively, may reflect a very short lifetime (<=10^6yr) of the protostellar content in this cloud. The MIPS images have identified embedded cool objects in most of the previously identified starless cores; in addition, there are 6 very young, possibly Class 0 objects identified. Finally we report finding of the driving sources for a set of five out of six very compact protostellar jets previously discovered in near-infrared images., Comment: 29 pages, 14 figures. To appear in Ap.J

Published
2007
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50. An infrared view of the EXor variables: on the case of V1118 ORI

Author

Lorenzetti, D., Giannini, T., Larionov, V. M., Kopatskaya, E., Arkharov, A. A., De Luca, M., and Di Paola, A.

Subjects
Astrophysics
Abstract

We investigate the relationship between the IR observed properties of the EXor variables and the mechanisms active during their evolutionary stage. To this aim, we have constructed a catalog of all the IR (1-100 micron) photometric and spectroscopic observations appearing during the last 30 years in the literature. New results of our monitoring program based on near- and mid-IR photometry and near-IR spectroscopy and polarimetry of one object (V1118 Ori) are presented, complementing those given in a previous paper and related to a different activity period. Our catalog indicates how the database accumulated so far is inadequate for any statistical study of the EXor events. Nevertheless, all the observational evidence can be interpreted into a coherent scheme. The sources that present the largest brightness variations tend to become bluer while brightening. The scenario of disk accretion based on viscous friction between particles agrees with the observations. The new results on V1118 Ori confirm such a general view. The striking novelty is represented by a near-IR spectrum of V1118 Ori taken 1 yr after the last monitored outburst: any emission line previously detected has now totally disappeared at our sensitivity. For the same source, mid-IR photometry is provided here for the first time and allows us to construct a meaningful SED. The first polarimetric data show that V1118 Ori is intrinsically polarized and its spotted, magnetized surface becomes recognizable during the less active phases., Comment: 23 pages. To be published to Astrophysical Journal

Published
2007
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