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1. Thermal synthesis of NiMn2O4 spinel employing Mn oxide ores as starting material

Author

Nascimento, R. S., Figueira, B. A. M., F. Neto, E., Rabelo, A. A., Fernandez, O. J. C., Luz, P. T. S. da, and Costa, M. L. da

Subjects
Mn oxide ore, synthesis, NiMn2O4, characterization, Amazon region
Abstract

It is described for the first time the synthesis and characterization of NiMn2O4 employing the Mn ores from the Amazon Region as starting material, instead of using commercial reagents as normally occurs in its synthesis process. Initially, an Mn ore was transformed into a single product, the octahedral layer (OL) manganese oxide with Ni2+ ions interlayer (Ni-OL-2), which was used as a matrix to obtain NiMn2O4 by thermal decomposition. The following techniques were used for characterization: X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), infrared spectroscopy (FTIR), thermal analysis (TG-DTA), scanning (SEM) and transmission (TEM) electron microscopies. The results revealed that Mn oxide ore composed of nsutite mineral transformed into a well-ordered crystalline Ni-OL-2 phase, after the hydrothermal and cation exchange process. The thermal decomposition of Ni-OL-2 produced the nickel manganite phase at 850 °C with spherical ball morphology and crystal sizes in the range of 200-300 nm.

Published
2023

3. SÍNTESE HIDROTERMAL POR FUSÃO ALCALINA DE ZEÓLITA NA-P1 DE REJEITOS DE CAULIM DA AMAZÔNIA E SUA APLICAÇÃO NA RETENÇÃO DE AZUL DE METILENO.

Author

LIMA, G. A., FIGUEIRA, B. A. M., ARAUJO, C. S. S., and SOARES, A. M. S.

Abstract

The use of waste from the mineral industry to obtain materials of technological importance has intensified in the last two decades, with the aim of reducing the environmental impact generated by them and adding value to an unwanted product. In the case of kaolin tailings from the Amazon, it is already being used for the production of zeolites. In this study, the results of the synthesis and characterization of P1-type zeolite and its application as an adsorbent for methylene blue dye are presented. Obtaining zeolite P1 was monitored by X-ray diffractometry, infrared and Raman spectroscopy, thermal analysis and scanning electron microscopy. The results showed that the zeolite was obtained without impurities, high degree of crystallinity, thermal stability above 300° C and very distinct and defined morphology. It was able to adsorb up to 90% dye. Showing that kaolin waste can be transformed into utility products.. [ABSTRACT FROM AUTHOR]

Published
2023
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4. Thermal synthesis of NiMn2O4 spinel employing Mn oxide ores as starting material.

Author

Nascimento, R. S., Figueira, B. A. M., Neto, E. F., Rabelo, A. A., Fernandez, O. J. C., da Luz, P. T. S., and da Costa, M. L.

Subjects
ORES, X-ray fluorescence, SPINEL, CRYSTAL morphology, MANGANESE oxides, FLUORESCENCE spectroscopy, MANGANITE, INFRARED spectroscopy, SPINEL group
Abstract

It is described for the first time the synthesis and characterization of NiMn2O4 employing the Mn ores from the Amazon Region as starting material, instead of using commercial reagents as normally occurs in its synthesis process. Initially, an Mn ore was transformed into a single product, the octahedral layer (OL) manganese oxide with Ni2+ ions interlayer (Ni-OL-2), which was used as a matrix to obtain NiMn2O4 by thermal decomposition. The following techniques were used for characterization: X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), infrared spectroscopy (FTIR), thermal analysis (TG-DTA), scanning (SEM) and transmission (TEM) electron microscopies. The results revealed that Mn oxide ore composed of nsutite mineral transformed into a well-ordered crystalline Ni-OL-2 phase, after the hydrothermal and cation exchange process. The thermal decomposition of Ni-OL-2 produced the nickel manganite phase at 850 °C with spherical ball morphology and crystal sizes in the range of 200-300 nm. [ABSTRACT FROM AUTHOR]

Published
2023
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7. Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory (vol 4, 038, 2017)

Author

Aab, A., Abreu, P., Aglietta, M., Samarai, Al, Albuquerque, I., Allekotte, I. F. M., Almela, I., Alvarez, Castillo, Alvarez-Muniz, J., Anastasi, Jessica, Anchordoqui, G. A., Rada, B., Ringa, S., Aramo, C., Arqueros, F., Arsene, N., Asorey, H., Assis, P., Aublin, J., Avila, G., Badescu, A. M., Balaceanu, A., Barreira, Luz, Beatty, R. J., Becker, J. J., Bellido, K. H., Berat, J. A., Bertaina, C., Bertou, M. E., Biermann, X., Billoir, P. L., Biteau, P., Blaess, J., Blanco, S. G., Blazek, A., Bleve, J., Bohacova, C., Boncioli, M., Bonifazi, D., Borodai, C., Botti, N., Brack, A. M., Brancus, J., Bretz, I., Bridgeman, T., Briechle, A., Buchholz, F. L., Bueno, P., Buitink, A., Buscemi, S., Caballero-Mora, M., Caccianiga, K. S., Cancio, L., Canfora, A., Caramete, F., Caruso, L., Castellina, R., Cataldi, Alessia, Cazon, G., Chavez, L., Chinellato, A. G., Chudoba, J. A., Clay, J., Colalillo, R. W., Coleman, R., Collica, A., Coluccia, L., Conceicao, M. R., Contreras, R., Cooper, F., Coutu, M. J., Covault, S., Cronin, C. E., D'Amico, J., Daniel, S., Dasso, B., Daumiller, S., Dawson, K., B. R., Almeida, De, Costa, ROSANNA MARIA STEFANIA, Jong, De, S. J., Mauro, De, de Mello Neto, J. R. T., Mitri, De, Oliveira, De, Souza, De, Debatin, V., Deligny, J., DI GIULIO, Augusto, Matteo, Di, Diaz, Castro, Diogo, M. L., Dobrigkeit, F., D'Olivo, C., Dorosti, J. C., Dos, Anjos, Dova, R. C., Dundovic, M. T., Ebr, A., Engel, J., Erdmann, R., Erfani, M., Escobar, M., Espadanal, C. O., Etchegoyen, J., Falcke, A., Farrar, H., Fauth, G., Fazzini, A. C., Fick, N., Figueira, B., Filipcic, J. M., Fratu, A., Freire, O., Fujii, M. M., Fuster, T., Gaior, A., Garcia, R., Garcia-Pinto, B., Gate, D., Gemmeke, F., Gherghel-Lascu, H., Ghia, A., Giaccari, P. L., Giammarchi, U., Giller, M., LAS CASAS, Maria Carmela, Glaser, D. G., Golup, C., Gomez, Berisso, Gomez, Vitale, Gonzalez, P. F., Gorgi, N., Gorham, A., Grillo, P., Grubb, A. F., Guarino, T. D., Guedes, F., Hampel, G. P., Hansen, M. R., Harari, P., Harrison, D., Harton, T. A., Haungs, J. L., Hebbeker, A., Heck, T., Heimann, D., Herve, P., Hill, A. E., Hojvat, G. C., Holt, C., Homola, E., Hor, P., J. R., El, Horvath, P., Hrabovsky, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., J, T, Jansen, I., Johnsen, S., Josebachuili, J. A., Kaapa, M., Kambeitz, A., Kampert, O., Katkov, K. H., Keilhauer, I., Kemp, B., Kemp, E., Kieckhafer, J., Klages, R. M., Kleifges, H. O., Kleinfeller, M., Krause, J., Krohm, R., Kuempel, N., Mezek, D., Kukec, G., Kunka, N., Awad, Kuotb, A., Lahurd, D., Lauscher, M., Legumina, R., Leigui de Oliveira, Letessier-Selvon, M. A., Lhenry-Yvon, A., Link, I., Lopes, K., Lopez, L., Lopez, Casado, Luce, A., Lucero, Q., Malacari, A., Mallamaci, M., AYSAR M. M., Yasin, At, D., Mantsch, P., Mariazzi, A. G., Maris, I. C., Marsella, G., Martello, D., Martinez, H., Martinez, Bravo, Masias, Meza, Mathes, J. J., Mathys, H. J., Matthews, S., Matthews, J., Matthiae, J. A. J., Mayotte, G., Mazur, E., Medina, P. O., Medina-Tanco, C., Melo, G., Menshikov, D., Micheletti, A., Middendorf, M. I., Minaya, L., Miramonti, I. A., Mitrica, L., Mockler, B., Mollerach, D., Montanet, S., Morello, F., Mostafa, C., Mueller, M., Mueller, A. L., Muller, G., Mueller, M. A., Mussa, S., Naranjo, R., Nellen, I., Nguyen, L., Niculescu-Oglinzanu, P. H., Niechciol, M., Niemietz, M., Niggemann, L., Nitz, T., Nosek, D., Novotny, D., Nozka, V., Nunez, H., Ochilo, L. A., Oikonomou, L., Olinto, F., Palatka, A., Pallotta, M., Papenbreer, J., Parente, P., Parra, G., Paul, A., Pech, T., Pedreira, M., Pekala, F., Pelayo, J., Pena-Rodriguez, R., Pereira, J., Perlin, L. A. S., Perrone, M., Peters, L., Petrera, C., Phuntsok, S., Piegaia, J., Pierog, R., Pieroni, T., Pimenta, P., Pirronello, SILVIA MARIA GRAZIA, Platino, V., Plum, M., Porowski, M., Prado, C., Privitera, R. R., Prouza, P., Quel, M., Querchfeld, E. J., Quinn, S., Ramos-Pollan, S., Rautenberg, R., Ravignani, J., Revenu, D., Ridky, B., Risse, J., Ristori, M., Rizi, P., Rodrigues de Carvalho, Rodriguez, Fern, Ez, G., Rodriguez, Rojo, Rogozin, J., Roncoroni, D., Roth, M. J., Roulet, M., Rovero, E., Ruehl, A. C., Saffi, P., Saftoiu, S. J., Salamida, A., Salazar, F., Saleh, H., Greus, A., Salesa, F., Salina, G., Sanchez, F., Sanchez-Lucas, P., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento, C. A., Sato, R., Schauer, M., Scherini, V., Schieler, H., Schimp, M., Schmidt, D., Scholten, O., Schovanek, P., Schroeder, F. G., Schulz, A., Schulz, J., Schumacher, J., Sciutto, S. J., Segreto, A., Settimo, M., Shadkam, A., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Smialkowski, A., Smida, R., Snow, G. R., Sommers, P., Sonntag, S., Sorokin, J., Squartini, R., Stanca, D., Stanic, S., Stasielak, J., Stassi, P., Strafella, F., Suarez, F., Suarez, Duran, Sudholz, M., Suomijarvi, T., Supanitsky, T., Swain, A. D., Szadkowski, J., Taboada, Z., Taborda, A., Tapia, O. A., Theodoro, A., Timmermans, V. M., Todero, Peixoto, Tomankova, C. J., Tome, L., Torralba, Elipe, Travnicek, G., Trini, P., Ulrich, M., Unger, R., Urban, M., Valdes, Galicia, Valino, J. F., Valore, I., Van, Aar, Van, Bodegom, van den Berg, A. M., Van, Vliet, BONILLA VARELA, Adelaida, Vargas, Cardenas, Varner, B., Vazquez, G., Vazquez, J. R., Veberic, R. A., Vergara, Quispe, Verzi, I. D., Vicha, V., Villasenor, J., Vorobiov, L., Wahlberg, S., Wainberg, H., Walz, O., Watson, D., Weber, A. A., Weindl, M., Wiencke, A., Wilczynski, L., Winchen, H., Wirtz, T., Wittkowski, M., Wundheiler, D., Yang, B., Yelos, L., Yushkov, D., Zas, A., Zavrtanik, E., Zavrtanik, D., Zepeda, M., Zimmermann, A., Ziolkowski, B., Zong, M., Zong, Z., and Pierre Auger Collaboration

Published
2018

9. Comportamento térmico e evolução das fases de óxidos de Mn com estrutura hollandita da região Amazônica

Author

Figueira, B. A. M., Angélica, R. S., Costa, M. L., Poellmann, H., and Mercury, J. M. R.

Subjects
criptomelana, Apuí, caracterização mineral, hollandite, mineral characterization, Urucum, cryptomelane, hollandita
Abstract

Minerais de óxidos de Mn com estrutura em túnel, hollandita (Apuí, Amazonas, Brasil, zona em prospecção) e criptomelana (Urucum, Mato Grosso do Sul, Brasil) foram isolados e caracterizados quanto à composição química, mineralógica, estabilidade térmica e morfologia. As seguintes técnicas foram utilizadas para caracterização: microscopia eletrônica de varredura-EDS, análise térmica (TG-DTA) e difração de raios X estático e com aquecimento contínuo entre 100-900 ºC. As seguintes fórmulas empíricas, calculadas com base em 16 átomos de oxigênios foram obtidas: (Ba0,18K0,12Ca0,02Pb0,04)0,76(Mn6,34Al0,61Si0,25Fe0,24Ti0,08)7,54O(16)0,4H2O para hollandita e (K0,9Na0,04Ca0,03Sr0,04)1,04(Mn7,38Fe0,28Al0,27Si0,08)8O16 para criptomelana. Mediante o uso de microscopia eletrônica de varredura foi possível diferenciar a morfologia da hollandita e da criptomelana. Os resultados de DRX e TG-DTA mostraram que os minerais apresentaram estabilidade térmica acima de 900 ºC. The tunnel-structure manganese oxide minerals, hollandite (Apuí, Amazonas state, Brazil, area in prospection) and cryptomelane (Urucum, Mato do Sul Grosso state, Brazil) were isolated and characterized chemical, mineralogical, thermal and morphologically. The following techniques were employed: scanning electron microscopy-EDS, thermal analysis (DTA-TG), X-ray diffraction with continuous-heating. The empirical formula, were calculated on the basis 16 oxygen gave as (Ba0.18K0.12Ca0.02Pb0.04)0.76(Mn6.34Al0.61Si0.25Fe0.24Ti0.08)7.54O(16)0.4H2O for hollandite and (K0.9Na0.04Ca0.03Sr0.04)1.04(Mn7.38Fe0.28Al0.27Si0.08)8O16 for cryptomelane. The SEM investigations allowed the differentiation of the morphologies for hollandite and cryptomelane. The minerals were thermally treated among 100-900 ºC and X-ray diffraction patterns in situ were collected. The analysis of X-ray diffractions experiments showed that a hollandite-crytomelane mineral has a thermal stability up to 900 ºC.

Published
2013

10. Thermal behavior and evolution of the Mn oxides phases with hollandite structure from Amazon region

Author

Figueira,B. A. M., Angélica,R. S., Costa,M. L., Poellmann,H., and Mercury,J. M. R.

Subjects
criptomelana, Apuí, caracterização mineral, CIENCIAS BIOLOGICAS::BOTANICA [CNPQ], Urucum, hollandita
Abstract

Minerais de óxidos de Mn com estrutura em túnel, hollandita (Apuí, Amazonas, Brasil, zona em prospecção) e criptomelana (Urucum, Mato Grosso do Sul, Brasil) foram isolados e caracterizados quanto à composição química, mineralógica, estabilidade térmica e morfologia. As seguintes técnicas foram utilizadas para caracterização: microscopia eletrônica de varredura-EDS, análise térmica (TG-DTA) e difração de raios X estático e com aquecimento contínuo entre 100-900 ºC. As seguintes fórmulas empíricas, calculadas com base em 16 átomos de oxigênios foram obtidas: (Ba0,18K0,12Ca0,02Pb0,04) 0,76 (Mn6,34Al0,61Si0,25Fe0,24Ti0,08)7,54O160,4H2O para hollandita e (K0,9Na0,04Ca0,03Sr0,04) 1,04(Mn7,38Fe0,28Al0,27Si0,08)8O16 para criptomelana. Mediante o uso de microscopia eletrônica de varredura foi possível diferenciar a morfologia da hollandita e da criptomelana. Os resultados de DRX e TG-DTA mostraram que os minerais apresentaram estabilidade térmica acima de 900 ºC. The tunnel-structure manganese oxide minerals, hollandite (Apuí, Amazonas state, Brazil, area in prospection) and cryptomelane (Urucum, Mato do Sul Grosso state, Brazil) were isolated and characterized chemical, mineralogical, thermal and morphologically. The following techniques were employed: scanning electron microscopy-EDS, thermal analysis (DTA-TG), X-ray diffraction with continuous-heating. The empirical formula, were calculated on the basis 16 oxygen gave as (Ba0.18K0.12Ca0.02Pb0.04) 0.76(Mn6.34Al 0.61Si0.25Fe0.24Ti0.08)7.54O160.4H2O for hollandite and (K0.9Na0.04Ca0.03Sr0.04)1.04(Mn7.38Fe0.28Al0.27Si0.08)8O16 for cryptomelane. The SEM investigations allowed the differentiation of the morphologies for hollandite and cryptomelane. The minerals were thermally treated among 100-900 ºC and X-ray diffraction patterns in situ were collected. The analysis of X-ray diffractions experiments showed that a hollandite-crytomelane mineral has a thermal stability up to 900 ºC.

Published
2013

11. The rapid atmospheric monitoring system of the Pierre Auger Observatory

Author

Abreu, P., Aglietta, M, Ahlers, M., Ahn, M., Albuquerque, E. J., Allard, I. F. M., Allekotte, D., Allen, I., Allison, J., Almela, P., Castillo, A., Alvarez Muniz, J. A., Batista, J., Ambrosio, R. A., Aminaei, M., Anchordoqui, A., Andringa, L., Antici'C, S., Aramo, T., Arganda, C., Arqueros, E., Asorey, F., Assis, H., Aublin, P., Ave, J., Avenier, M., Avila, M., Badescu, G., Balzer, A. M., Barber, M., Barbosa, K. B., Bardenet, A. F., Barroso, R., Baughman, S. L. C., Bauml, B., Baus, J., Beatty, C., Becker, J. J., Belletoile, K. H., Bellido, A., Benzvi, J. A., Berat, S., Bertou, C., Biermann, X., Billoir, P. L., Blanco, P., Blanco, F., Bleve, M., Blumer, C., Bohacova, H., Boncioli, M., Bonifazi, D., Bonino, C., Borodai, R., Brack, N., Brancus, J., Brogueira, I., Brown, P., Bruijn, W. C., Buchholz, R., Bueno, P., Buroker, A., Burton, L., Caballero Mora, R. E., Caccianiga, K. S., Caramete, B., Caruso, L., Castellina, R., Catalano, A., Cataldi, O., Cazon, G., Cester, L., Chauvin, R., Cheng, J., Chiavassa, S. H., Chinellato, A., Diaz, J. A., Chudoba, J. C., Cilmo, J., Clay, M., Cocciolo, R. W., Collica, G., Coluccia, L., Conceicao, M. R., Contreras, R., Cook, F., Cooper, H., Coppens, M. J., Cordier, J., Coutu, A., Covault, S., Creusot, C. E., Criss, A., Cronin, A., Curutiu, J., Dagoret Campagne, A., Dallier, S., Daniel, R., Dasso, B., Daumiller, S., Dawson, K., de Almeida, B. R., De Domenico, R. M., De Donato, M., de Jong, C., De la Vega, S. J., de Mello, G., Neto, W. J. M., Mitri, Jrtd, de Souza, I., de Vries, V., del Peral, K. D., del Rio, L., Deligny, M., Dembinski, O., Dhital, H., Di Giulio, N., Castro, C., Diep, M. L. D., Diogo, P. N., Dobrigkeit, F., Docters, C., D'Olivo, W., Dong, J. C., Dorofeev, P. N., dos Anjos, A., Dova, J. C., D'Urso, M. T., Dutan, D., Ebr, I., Engel, J., Erdmann, R., Escobar, M., Espadanal, C. O., Etchegoyen, J., Luis, A., Falcke, P. F. S., Fang, H., Farrar, K., Fauth, G., Fazzini, A. C., Ferguson, N., Fick, A. P., Figueira, B., Filevich, J. M., Filipcic, A., Fliescher, A., Fracchiolla, S., Fraenkel, C. E., Fratu, E. D., Frohlich, O., Fuchs, U., Gaior, B., Gamarra, R., Gambetta, R. F., Garcia, S., Roca, B., Garcia Gamez, S. T. G., Garcia Pinto, D., Garilli, D., Bravo, G., Gemmeke, A. G., Ghia, H., Giller, P. L., Gitto, M., Glass, J., Gold, H., Golup, M. S., Albarracin, G., Berisso, F. G., Vitale, M. G., Goncalves, P. F. G., Gonzalez, P., Gookin, G., Gorgi, B., Gouffon, A., Grashorn, P., Grebe, E., Griffith, S., Grillo, N., Guardincerri, A. F., Guarino, Y., Guedes, F., Hansen, G. P., Harari, P., Harrison, D., Harton, T. A., Haungs, J. L., Hebbeker, A., Heck, T., Herve, D., Hojvat, A. E., Hollon, C., Holmes, N., Homola, V. C., Horandel, P., Horvath, J. R., Hrabovsky, P., Huber, M., Huege, D., Insolia, T., Ionita, A., Italiano, F., Jansen, A., Jarne, S., Jiraskova, C., Josebachuili, S., Kadija, M., Kampert, K., Karhan, K. H., Kasper, P., Katkov, P., Kegl, I., Keilhauer, B., Keivani, B., Kelley, A., Kemp, J. L., Kieckhafer, E., Klages, R. M., Kleifges, H. O., Kleinfeller, M., Knapp, J., Koang, J., Kotera, D. H., Krohm, K., Kromer, N., Kruppke Hansen, O., Kuempel, D., Kulbartz, D., Kunka, J. K., La Rosa, N., Lachaud, G., Lahurd, C., Latronico, D., Lauer, L., Lautridou, R., Le Coz, P., Leao, S., Lebrun, Msab and, Lebrun, D., de Oliveira, P., Letessier Selvon, M. A. L., Lhenry Yvon, A., Link, I., Lopez, K., Aguera, R., Louedec, A. L., Bahilo, K., J. L., Lu, Lucero, L., Ludwig, A., Lyberis, M., Maccarone, H., Macolino, M. C., Maldera, C., Maller, S., Mandat, J., Mantsch, D., Mariazzi, P., Marin, A. G., Marin, J., Maris, V., Falcon, I. C., Marsella, H. R. M., Martello, G., Martin, D., Martinez, L., Bravo, H., Martraire, O. M., Meza, D., Mathes, J. J. M., Matthews, H. J., Matthews, J., Matthiae, A. J., Maurel, G., Maurizio, D., Mazur, D., Medina Tanco, P. O., Melissas, G., Melo, M., Menichetti, D., Menshikov, E., Mertsch, A., Meurer, P., Meyhandan, C., Mi'Canovi'C, R., Micheletti, S., Minaya, M. I., Miramonti, I. A., Molina Bueno, L., Mollerach, L., Monasor, S., Ragaigne, M., Montanet, D. M., Morales, F., Morello, B., Moreno, C., Moreno, E., Mostafa, J. C., Moura, M., Muller, C. A., Muller, M. A., Munchmeyer, G., Mussa, M., Navarra, R., Navarro, G., Navas, J. L., Necesal, S., Nellen, P., Nelles, L., Neuser, A., Nhung, J., Niechciol, P. T., Niemietz, M., Nierstenhoefer, L., Nitz, N., Nosek, D., Nozka, D., Oehlschlager, L., Olinto, J., Ortiz, A., Pacheco, M., Selmi Dei, N., Palatka, D. P., Pallotta, M., Palmieri, J., Parente, N., Parizot, G., Parra, E., Pastor, A., Paul, S., Pech, T., Pekala, M., Pelayo, J., Pepe, R., Perrone, I. M., Pesce, L., Petermann, R., Petrera, E., Petrolini, Alessandro, Petrov, A., Pfendner, Y., Piegaia, C., Pierog, R., Pieroni, T., Pimenta, P., Pirronello, M., Platino, V., Plum, M., Ponce, M., Pontz, V. H., Porcelli, M., Privitera, A., Prouza, P., Quel, M., Querchfeld, E. J., Rautenberg, S., Ravel, J., Ravignani, O., Revenu, D., Ridky, B., Riggi, J., Risse, S., Ristori, M., Rivera, P., Rizi, H., Roberts, V., de Carvalho, J., Rodriguez, W. R., Cabo, G., Martino, I. R., Rojo, J. R., Rodriguez Frias, J. R., Ros, M. D., Rosado, G., Rossler, J., Roth, T., Rouille d'Orfeuil, M., Roulet, B., Rovero, E., Ruhle, A. C., Saftoiu, C., Salamida, A., Salazar, F., Greus, H., Salina, F. S., Sanchez, G., Santo, F., Santos, C. E., Santos, E., Sarazin, E. M., Sarkar, F., Sarkar, B., Sato, S., Scharf, R., Scherini, N., Schieler, V., Schiffer, H., Schmidt, P., Scholten, A., Schoorlemmer, O., Schovancova, H., Schovanek, J., Schroder, P., Schulte, F., Schuster, S., Sciutto, D., Scuderi, S. J., Segreto, M., Settimo, A., Shadkam, M., Shellard, A., Sidelnik, R. C., Sigl, I., Lopez, G., Sima, H. H. S., Smialkowski, O., Smida, A., Snow, R., Sommers, G. R., Sorokin, P., Spinka, J., Squartini, H., Srivastava, R., Stanic, Y. N., Stapleton, S., Stasielak, J., Stephan, J., Stutz, M., Suarez, A., Suomijarvi, F., Supanitsky, T., Susa, A. D., Sutherland, T., Swain, M. S., Szadkowski, J., Szuba, Z., Tapia, M., Tartare, A., Tascau, M., Tcaciuc, O., Thao, R., Thomas, N. T., Tiffenberg, D., Timmermans, J., Tkaczyk, C., Peixoto, W., Toma, C. J. T., Tomankova, G., Tome, L., Tonachini, B., Travnicek, A., Tridapalli, P., Tristram, D. B., Trovato, G., Tueros, E., Ulrich, M., Unger, R., Urban, M., Galicia, M., Valino, J. F. V., Valore, I., Van Aar, L., van den Berg, G., van Vliet, A. M., Varela, A., Cardenas, E., Vazquez, B. V., Vazquez, J. R., Veberic, R. A., Verzi, D., Vicha, V., Videla, J., Villasenor, M., Wahlberg, L., Wahrlich, H., Wainberg, P., Walz, O., Watson, D., Weber, A. A., Weidenhaupt, M., Weindl, K., Werner, A., Westerhoff, F., Whelan, S., Widom, B. J., Wieczorek, A., Wiencke, G., Wilczynska, L., Wilczynski, B., Will, H., Williams, M., Winchen, C., Wommer, T., Wundheiler, M., Yamamoto, B., Yapici, T., Younk, T., Yuan, P., Yushkov, G., Garcia, A., Zas, B. Z., Zavrtanik, E., Zavrtanik, D., Zaw, M., Zepeda, I., Zhou, A., Zhu, J., Silva, Y., Ziolkowski, M. Z., Pierre Auger, M., APC - Astrophysique des Hautes Energies (APC - AHE), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), PIERRE AUGER, P., Abreu, M., Aglietta, M., Ahler, E. J., Ahn, I. F. M., Albuquerque, D., Allard, I., Allekotte, J., Allen, P., Allison, A., Almela, J., Alvarez Castillo, J., Alvarez Muñiz, R., Alves Batista, M., Ambrosio, A., Aminaei, L., Anchordoqui, S., Andringa, T., Antičić, C., Aramo, E., Arganda, F., Arquero, H., Asorey, P., Assi, J., Aublin, M., Ave, M., Avenier, G., Avila, A. M., Badescu, M., Balzer, K. B., Barber, A. F., Barbosa, R., Bardenet, S. L. C., Barroso, B., Baughman f, J., Bäuml, C., Bau, J. J., Beatty, K. H., Becker, A., Bellétoile, J. A., Bellido, S., Benzvi, C., Berat, X., Bertou, P. L., Biermann, P., Billoir, F., Blanco, M., Blanco, C., Bleve, H., Blümer, M., Boháčová, D., Boncioli, C., Bonifazi, R., Bonino, N., Borodai, J., Brack, I., Brancu, P., Brogueira, W. C., Brown, R., Bruijn i, P., Buchholz, A., Bueno, L., Buroker, R. E., Burton, K. S., Caballero Mora, B., Caccianiga, L., Caramete, R., Caruso, A., Castellina, O., Catalano, G., Cataldi, L., Cazon, R., Cester, J., Chauvin, S. H., Cheng, A., Chiavassa, J. A., Chinellato, J., Chirinos Diaz, J., Chudoba, M., Cilmo, R. W., Clay, Cocciolo, Giuseppe, L., Collica, Coluccia, MARIA RITA, R., Conceição, F., Contrera, H., Cook, M. J., Cooper, J., Coppen, A., Cordier, S., Coutu, C. E., Covault, A., Creusot, A., Cri, J., Cronin, A., Curutiu, S., Dagoret Campagne, R., Dallier, B., Daniel, S., Dasso, K., Daumiller, B. R., Dawson, R. M., de Almeida, M., De Domenico, C., De Donato, S. J., de Jong, G., De La Vega, W. J. M., de Mello Junior, J. R. T., de Mello Neto, DE MITRI, Ivan, V., de Souza, K. D., de Vrie, L., del Peral, M., del Río, O., Deligny, H., Dembinski, N., Dhital, C., Di Giulio, M. L., Díaz Castro, P. N., Diep, F., Diogo, C., Dobrigkeit, W., Docter, J. C., D'Olivo, P. N., Dong, A., Dorofeev, J. C., dos Anjo, M. T., Dova, D., D'Urso, I., Dutan, J., Ebr, R., Engel, M., Erdmann, C. O., Escobar, J., Espadanal, A., Etchegoyen, P., Facal San Lui, H., Falcke, K., Fang, G., Farrar, A. C., Fauth, N., Fazzini, A. P., Ferguson, B., Fick, J. M., Figueira, A., Filevich, A., Filipčič, S., Fliescher, C. E., Fracchiolla, E. D., Fraenkel!, O., Fratu, U., Fröhlich, B., Fuch, R., Gaior, R. F., Gamarra, S., Gambetta, B., García, S. T., Garcia Roca, D., Garcia Gamez, D., Garcia Pinto, G., Garilli, A., Gascon Bravo, H., Gemmeke, P. L., Ghia, M., Giller, J., Gitto, H., Gla, M. S., Gold, G., Golup, F., Gomez Albarracin, M., Gómez Berisso, P. F., Gómez Vitale, P., Gonçalve, J. G., Gonzalez, B., Gookin, A., Gorgi, P., Gouffon, E., Grashorn, S., Grebe, N., Griffith, A. F., Grillo, Y., Guardincerri, F., Guarino, G. P., Guede, P., Hansen, D., Harari, T. A., Harrison, J. L., Harton, A., Haung, T., Hebbeker, D., Heck, A. E., Herve, C., Hojvat, N., Hollon, V. C., Holme, P., Homola, J. R., Hörandel, P., Horvath, M., Hrabovský, D., Huber, T., Huege, A., Insolia, F., Ionita, A., Italiano, S., Jansen, C., Jarne, S., Jiraskova, M., Josebachuili, K., Kadija, K. H., Kampert, P., Karhan, P., Kasper, I., Katkov, B., Kégl, B., Keilhauer, A., Keivani, J. L., Kelley, E., Kemp, R. M., Kieckhafer, H. O., Klage, M., Kleifge, J., Kleinfeller, J., Knapp, D. H., Koang, K., Kotera, N., Krohm, O., Krömer, D., Kruppke Hansen, D., Kuempel, J. K., Kulbartz, N., Kunka, G., La Rosa, C., Lachaud, D., Lahurd, L., Latronico, R., Lauer, P., Lautridou, S., Le Coz, M. S. A. B., Leão, D., Lebrun, P., Lebrun, M. A., Leigui de Oliveira, A., Letessier Selvon, I., Lhenry Yvon, K., Link, R., López, A., Lopez Agüera, K., Louedec, J., Lozano Bahilo, L., Lu, A., Lucero, M., Ludwig, H., Lyberi, M. C., Maccarone, C., Macolino, S., Maldera, J., Maller, D., Mandat, P., Mantsch, A. G., Mariazzi, J., Marin, V., Marin, I. C., Mari, H. R., Marquez Falcon, Marsella, Giovanni, Martello, Daniele, L., Martin, H., Martinez, O., Martínez Bravo, D., Martraire, J. J., Masías Meza, H. J., Mathe, J., Matthew, J. A. J., Matthew, G., Matthiae, D., Maurel, D., Maurizio, P. O., Mazur, G., Medina Tanco, M., Melissa, D., Melo, E., Menichetti, A., Menshikov, P., Mertsch, C., Meurer, R., Meyhandan, S., Mićanović, M. I., Micheletti, I. A., Minaya, L., Miramonti, L., Molina Bueno, S., Mollerach, M., Monasor, D., Monnier Ragaigne, F., Montanet, B., Morale, C., Morello, E., Moreno, J. C., Moreno, M., Mostafá, C. A., Moura, M. A., Muller, G., Müller, M., Münchmeyer, R., Mussa, G., Navarra ‡, J. L., Navarro, S., Nava, P., Necesal, L., Nellen, A., Nelle, J., Neuser, P. T., Nhung, M., Niechciol, L., Niemietz, N., Nierstenhoefer, D., Nitz, D., Nosek, L., Nožka, J., Oehlschläger, A., Olinto, M., Ortiz, N., Pacheco, D., Pakk Selmi Dei, M., Palatka, J., Pallotta, N., Palmieri, G., Parente, E., Parizot, A., Parra, S., Pastor, T., Paul, M., Pech, J., Pękala, R., Pelayo, I. M., Pepe, Perrone, Lorenzo, R., Pesce, E., Petermann, S., Petrera, A., Petrolini, Y., Petrov, C., Pfendner, R., Piegaia, T., Pierog, P., Pieroni, M., Pimenta, V., Pirronello, M., Platino, M., Plum, V. H., Ponce, M., Pontz, A., Porcelli, P., Privitera, M., Prouza, E. J., Quel, S., Querchfeld, J., Rautenberg, O., Ravel, D., Ravignani, B., Revenu, J., Ridky, S., Riggi, M., Risse, P., Ristori, H., Rivera, V., Rizi, J., Robert, W., Rodrigues de Carvalho, G., Rodriguez, I., Rodriguez Cabo, J., Rodriguez Martino, J., Rodriguez Rojo, M. D., Rodríguez Fría, G., Ro, J., Rosado, T., Rossler, M., Roth, B., Rouillé d'Orfeuil, E., Roulet, A. C., Rovero, C., Rühle, A., Saftoiu, F., Salamida, H., Salazar, F., Salesa Greu, G., Salina, F., SÃ! ¡nchez, C. E., Santo, E., Santo, E. M., Santo, F., Sarazin, B., Sarkar, S., Sarkar, R., Sato, N., Scharf, V., Scherini, H., Schieler, P., Schiffer, A., Schmidt, O., Scholten, H., Schoorlemmer, J., Schovancova, P., Schovánek, F., Schröder, S., Schulte, D., Schuster, S. J., Sciutto, M., Scuderi, A., Segreto, M., Settimo, A., Shadkam, R. C., Shellard, I., Sidelnik, G., Sigl, H. H., Silva Lopez, O., Sima, A., Śmiałkowski, R., Šmída, G. R., Snow, P., Sommer, J., Sorokin, H., Spinka, R., Squartini, Y. N., Srivastava, S., Stanic, J., Stapleton, J., Stasielak, M., Stephan, A., Stutz, F., Suarez, T., Suomijärvi, A. D., Supanitsky, T., Šuša, M. S., Sutherland, J., Swain, Z., Szadkowski, M., Szuba, A., Tapia, M., Tartare, O., Taşcău, R., Tcaciuc, N. T., Thao, D., Thoma, J., Tiffenberg, C., Timmerman, W., Tkaczyk, C. J., Todero Peixoto, G., Toma, L., Tomankova, B., Tomé, A., Tonachini, P., Travnicek, D. B., Tridapalli, G., Tristram, E., Trovato, M., Tuero, R., Ulrich, M., Unger, M., Urban, J. F., Valdés Galicia, I., Valiño, L., Valore, G., van Aar, A. M., van den Berg, A., van Vliet, E., Varela, B., Vargas Cárdena, J. R., Vázquez, R. A., Vázquez, D., Veberič, V., Verzi, J., Vicha, M., Videla, L., Villaseñor, H., Wahlberg, P., Wahrlich, O., Wainberg, D., Walz, A. A., Watson, M., Weber, K., Weidenhaupt, A., Weindl, F., Werner, S., Westerhoff, B. J., Whelan, A., Widom, G., Wieczorek, L., Wiencke, B., Wilczyńska, H., Wilczyński, M., Will, C., William, T., Winchen, M., Wommer, B., Wundheiler, T., Yamamoto a, T., Yapici, P., Younk, G., Yuan, A., Yushkov, B., Zamorano Garcia, E., Za, D., Zavrtanik, M., Zavrtanik, I., Zaw h, A., Zepeda b, J., Zhou, Y., Zhu, M., Zimbres Silva, M. Ziolkowski, ., P. Abreu, M. Aglietta, M. Ahler, E.J. Ahn, I.F.M. Albuquerque, D. Allard, I. Allekotte, J. Allen, P. Allison, A. Almela, J. Alvarez Castillo, J. Alvarez-Muñiz, R. Alves Batista, M. Ambrosio, A. Aminaei, L. Anchordoqui, S. Andringa, T. Antičić, C. Aramo, E. Arganda, F. Arquero, H. Asorey, P. Assi, J. Aublin, M. Ave, M. Avenier, G. Avila, A.M. Badescu, M. Balzer, K.B. Barber, A.F. Barbosa, R. Bardenet, S.L.C. Barroso, B. Baughman f, J. Bäuml, C. Bau, J.J. Beatty, K.H. Becker, A. Bellétoile, J.A. Bellido, S. BenZvi, C. Berat, X. Bertou, P.L. Biermann, P. Billoir, F. Blanco, M. Blanco, C. Bleve, H. Blümer, M. Boháčová, D. Boncioli, C. Bonifazi, R. Bonino, N. Borodai, J. Brack, I. Brancu, P. Brogueira, W.C. Brown, R. Bruijn i, P. Buchholz, A. Bueno, L. Buroker, R.E. Burton, K.S. Caballero-Mora, B. Caccianiga, L. Caramete, R. Caruso, A. Castellina, O. Catalano, G. Cataldi, L. Cazon, R. Cester, J. Chauvin, S.H. Cheng, A. Chiavassa, J.A. Chinellato, J. Chirinos Diaz, J. Chudoba, M. Cilmo, R.W. Clay, G. Cocciolo, L. Collica, M.R. Coluccia, R. Conceição, F. Contrera, H. Cook, M.J. Cooper, J. Coppen, A. Cordier, S. Coutu, C.E. Covault, A. Creusot, A. Cri, J. Cronin, A. Curutiu, S. Dagoret-Campagne, R. Dallier, B. Daniel, S. Dasso, K. Daumiller, B.R. Dawson, R.M. de Almeida, M. De Domenico, C. De Donato, S.J. de Jong, G. De La Vega, W.J.M. de Mello Junior, J.R.T. de Mello Neto, I. De Mitri, V. de Souza, K.D. de Vrie, L. del Peral, M. del Río, O. Deligny, H. Dembinski, N. Dhital, C. Di Giulio, M.L. Díaz Castro, P.N. Diep, F. Diogo, C. Dobrigkeit, W. Docter, J.C. D'Olivo, P.N. Dong, A. Dorofeev, J.C. dos Anjo, M.T. Dova, D. D'Urso, I. Dutan, J. Ebr, R. Engel, M. Erdmann, C.O. Escobar, J. Espadanal, A. Etchegoyen, P. Facal San Lui, H. Falcke, K. Fang, G. Farrar, A.C. Fauth, N. Fazzini, A.P. Ferguson, B. Fick, J.M. Figueira, A. Filevich, A. Filipčič, S. Fliescher, C.E. Fracchiolla, E.D. Fraenkel!, O. Fratu, U. Fröhlich, B. Fuch, R. Gaior, R.F. Gamarra, S. Gambetta, B. García, S.T. Garcia Roca, D. Garcia-Gamez, D. Garcia-Pinto, G. Garilli, A. Gascon Bravo, H. Gemmeke, P.L. Ghia, M. Giller, J. Gitto, H. Gla, M.S. Gold, G. Golup, F. Gomez Albarracin, M. Gómez Berisso, P.F. Gómez Vitale, P. Gonçalve, J.G. Gonzalez, B. Gookin, A. Gorgi, P. Gouffon, E. Grashorn, S. Grebe, N. Griffith, A.F. Grillo, Y. Guardincerri, F. Guarino, G.P. Guede, P. Hansen, D. Harari, T.A. Harrison, J.L. Harton, A. Haung, T. Hebbeker, D. Heck, A.E. Herve, C. Hojvat, N. Hollon, V.C. Holme, P. Homola, J.R. Hörandel, P. Horvath, M. Hrabovský, D. Huber, T. Huege, A. Insolia, F. Ionita, A. Italiano, S. Jansen, C. Jarne, S. Jiraskova, M. Josebachuili, K. Kadija, K.H. Kampert, P. Karhan, P. Kasper, I. Katkov, B. Kégl, B. Keilhauer, A. Keivani, J.L. Kelley, E. Kemp, R.M. Kieckhafer, H.O. Klage, M. Kleifge, J. Kleinfeller, J. Knapp, D.-H. Koang, K. Kotera, N. Krohm, O. Krömer, D. Kruppke-Hansen, D. Kuempel, J.K. Kulbartz, N. Kunka, G. La Rosa, C. Lachaud, D. LaHurd, L. Latronico, R. Lauer, P. Lautridou, S. Le Coz, M.S.A.B. Leão, D. Lebrun, P. Lebrun, M.A. Leigui de Oliveira, A. Letessier-Selvon, I. Lhenry-Yvon, K. Link, R. López, A. Lopez Agüera, K. Louedec, J. Lozano Bahilo, L. Lu, A. Lucero, M. Ludwig, H. Lyberi, M.C. Maccarone, C. Macolino, S. Maldera, J. Maller, D. Mandat, P. Mantsch, A.G. Mariazzi, J. Marin, V. Marin, I.C. Mari, H.R. Marquez Falcon, G. Marsella, D. Martello, L. Martin, H. Martinez, O. Martínez Bravo, D. Martraire, J.J. Masías Meza, H.J. Mathe, J. Matthew, J.A.J. Matthew, G. Matthiae, D. Maurel, D. Maurizio, P.O. Mazur, G. Medina-Tanco, M. Melissa, D. Melo, E. Menichetti, A. Menshikov, P. Mertsch, C. Meurer, R. Meyhandan, S. Mićanović, M.I. Micheletti, I.A. Minaya, L. Miramonti, L. Molina-Bueno, S. Mollerach, M. Monasor, D. Monnier Ragaigne, F. Montanet, B. Morale, C. Morello, E. Moreno, J.C. Moreno, M. Mostafá, C.A. Moura, M.A. Muller, G. Müller, M. Münchmeyer, R. Mussa, G. Navarra ‡, J.L. Navarro, S. Nava, P. Necesal, L. Nellen, A. Nelle, J. Neuser, P.T. Nhung, M. Niechciol, L. Niemietz, N. Nierstenhoefer, D. Nitz, D. Nosek, L. Nožka, J. Oehlschläger, A. Olinto, M. Ortiz, N. Pacheco, D. Pakk Selmi-Dei, M. Palatka, J. Pallotta, N. Palmieri, G. Parente, E. Parizot, A. Parra, S. Pastor, T. Paul, M. Pech, J. Pękala, R. Pelayo, I.M. Pepe, L. Perrone, R. Pesce, E. Petermann, S. Petrera, A. Petrolini, Y. Petrov, C. Pfendner, R. Piegaia, T. Pierog, P. Pieroni, M. Pimenta, V. Pirronello, M. Platino, M. Plum, V.H. Ponce, M. Pontz, A. Porcelli, P. Privitera, M. Prouza, E.J. Quel, S. Querchfeld, J. Rautenberg, O. Ravel, D. Ravignani, B. Revenu, J. Ridky, S. Riggi, M. Risse, P. Ristori, H. Rivera, V. Rizi, J. Robert, W. Rodrigues de Carvalho, G. Rodriguez, I. Rodriguez Cabo, J. Rodriguez Martino, J. Rodriguez Rojo, M.D. Rodríguez-Fría, G. Ro, J. Rosado, T. Rossler, M. Roth, B. Rouillé-d'Orfeuil, E. Roulet, A.C. Rovero, C. Rühle, A. Saftoiu, F. Salamida, H. Salazar, F. Salesa Greu, G. Salina, F. SÃ! ¡nchez, C.E. Santo, E. Santo, E.M. Santo, F. Sarazin, B. Sarkar, S. Sarkar, R. Sato, N. Scharf, V. Scherini, H. Schieler, P. Schiffer, A. Schmidt, O. Scholten, H. Schoorlemmer, J. Schovancova, P. Schovánek, F. Schröder, S. Schulte, D. Schuster, S.J. Sciutto, M. Scuderi, A. Segreto, M. Settimo, A. Shadkam, R.C. Shellard, I. Sidelnik, G. Sigl, H.H. Silva Lopez, O. Sima, A. Śmiałkowski, R. Šmída, G.R. Snow, P. Sommer, J. Sorokin, H. Spinka, R. Squartini, Y.N. Srivastava, S. Stanic, J. Stapleton, J. Stasielak, M. Stephan, A. Stutz, F. Suarez, T. Suomijärvi, A.D. Supanitsky, T. Šuša, M.S. Sutherland, J. Swain, Z. Szadkowski, M. Szuba, A. Tapia, M. Tartare, O. Taşcău, R. Tcaciuc, N.T. Thao, D. Thoma, J. Tiffenberg, C. Timmerman, W. Tkaczyk, C.J. Todero Peixoto, G. Toma, L. Tomankova, B. Tomé, A. Tonachini, P. Travnicek, D.B. Tridapalli, G. Tristram, E. Trovato, M. Tuero, R. Ulrich, M. Unger, M. Urban, J.F. Valdés Galicia, I. Valiño, L. Valore, G. van Aar, A.M. van den Berg, A. van Vliet, E. Varela, B. Vargas Cárdena, J.R. Vázquez, R.A. Vázquez, D. Veberič, V. Verzi, J. Vicha, M. Videla, L. Villaseñor, H. Wahlberg, P. Wahrlich, O. Wainberg, D. Walz, A.A. Watson, M. Weber, K. Weidenhaupt, A. Weindl, F. Werner, S. Westerhoff, B.J. Whelan, A. Widom, G. Wieczorek, L. Wiencke, B. Wilczyńska, H. Wilczyński, M. Will, C. William, T. Winchen, M. Wommer, B. Wundheiler, T. Yamamoto a, T. Yapici, P. Younk, G. Yuan, A. Yushkov, B. Zamorano Garcia, E. Za, D. Zavrtanik, M. Zavrtanik, I. Zaw h, A. Zepeda b, J. Zhou, Y. Zhu, M. Zimbres Silva, M. Ziolkowski ., Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Aramo, Carla, D'Urso, Domenico, Guarino, Fausto, Valore, Laura, The Pierre Auger, Collaboration, KVI - Center for Advanced Radiation Technology, Research unit Astroparticle Physics, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)

Subjects
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astronomy, FOS: Physical sciences, Cosmic ray, Real-time monitoring, 01 natural sciences, Large detector systems for particle and astroparticle physics, Real-time monitoring, Control and monitor systems online, Optical telescope, Observatory, 0103 physical sciences, SHOWERS, Large detector systems for particle and astroparticle physics, Control and monitor systems online, FLUORESCENCE, 010303 astronomy & astrophysics, Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), DETECTOR, Mathematical Physics, Remote sensing, Event reconstruction, Pierre Auger Observatory, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Física, ENERGY-SPECTRUM, Monitoring program, Aerosol, ATMOSFERA (MONITORAMENTO), Air shower, Experimental High Energy Physics, Física nuclear, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The Pierre Auger Observatory is a facility built to detect air showers produced by cosmic rays above 1017 eV. During clear nights with a low illuminated moon fraction, the UV fluorescence light produced by air showers is recorded by optical telescopes at the Observatory. To correct the observations for variations in atmospheric conditions, atmospheric monitoring is performed at regular intervals ranging from several minutes (for cloud identification) to several hours (for aerosol conditions) to several days (for vertical profiles of temperature, pressure, and humidity). In 2009, the monitoring program was upgraded to allow for additional targeted measurements of atmospheric conditions shortly after the detection of air showers of special interest, e. g., showers produced by very high-energy cosmic rays or showers with atypical longitudinal profiles. The former events are of particular importance for the determination of the energy scale of the Observatory, and the latter are characteristic of unusual air shower physics or exotic primary particle types. The purpose of targeted (or "rapid") monitoring is to improve the resolution of the atmospheric measurements for such events. In this paper, we report on the implementation of the rapid monitoring program and its current status. The rapid monitoring data have been analyzed and applied to the reconstruction of air showers of high interest, and indicate that the air fluorescence measurements affected by clouds and aerosols are effectively corrected using measurements from the regular atmospheric monitoring program. We find that the rapid monitoring program has potential for supporting dedicated physics analyses beyond the standard event reconstruction.

Published
2012

12. Comparação dos procedimentos metodológicos de reconstrução cinemática 2d na técnica de bruços – Duplo meio / planos seprados

Author

Figueira, B., Reis, António, Reis, Victor M., Silva, A.J., Garrido, Nuno D., Louro, Hugo, Marinho, D.A., Baldari, C., and Barbosa, Tiago M.

Subjects
Planos separados, Cinemática, Natação, Duplo meio
Abstract

O presente estudo teve como propósito principal o de averiguar os procedimentos bem como o grau de concordância das reconstruções dos parâmetros cinemáticos de execução na técnica de bruços com recurso a duas metodologias distintas de captura e reconstrução cinemétrica, duplo meio (DM) e planos separados (PS). A amostra foi constituída por 7 nadadores do sexo masculino especialistas na técnica de bruços (19.1 ± 4,3 anos de idade; 1.78 ± 0.62 m de estatura; 70.4 ± 8.0 kg de massa corporal; 69.10 ± 4.16 s de recorde pessoal aos 100 m Bruços em piscina longa). O protocolo consistiu na realização de um percurso de 100 m na técnica de bruços à máxima velocidade possível (prova maximal), em piscina de 50 metros. Os registos de imagem para posterior tratamento foram recolhidos por um sistema constituído por um par de câmaras de vídeo (uma subaquática - inclusa numa caixa estanque e uma de superfície). Assim, foram recolhidas as imagens da prova utilizando as duas metodologias, o DM e os PS. Duas câmaras registaram respectivamente imagens aéreas (GR-SX1 SVHS, JVC, Yokoama, Japão) e subaquáticas (GR-SXM25 SVHS, JVC, Yokoama, Japão) no plano sagital, a 25 metros da parede testa de partida. Foi efectuada a análise cinemática (Ariel Performance Analysis System, Ariel Dynamics Inc., Califórnia, EUA) de um ciclo gestual completo, através de um leitor de vídeo a 50 Hz (Panasonic, AG 7355, Japão). Recorreu-se ao método de digitalização em planos separados (aéreo e subaquático) e subsequente reconstrução pela aplicação do algoritmo2D-DLT [1]. Foi adoptado o modelo antropométrico de Zatsiorsky, adaptado por de Leva [6],, incluindo a divisão do tronco em 2 partes articuladas. Os sinais foram filtrados com uma frequência de corte de 5 Hz, como sugerido por Winter [15], com recurso a dupla-passagem. A fiabilidade do processo de digitalização-redigitalização para os dois métodos foi muito elevada (R = 0.97; ICR = .87; 0.95). Determinouse a duração absoluta do teste (T100, s), a duração absoluta do ciclo gestual (Durciclo), a frequência ciclo (FC, Hz), a distância de ciclo (DC, m), a velocidade de nado (v, m.s-1), o índice de nado (IN, m2.c-1.s-1), a flutuação intra-cíclica da velocidade horizontal do centro de massa (dv, %) e o deslocamento vertical do centro de massa corporal (Dy, m). Foi efectuada a comparação entre as duas situações com recurso a estatística não paramétrica (Teste de Wilcoxon) para P £ 0.05. O resultados sugerem-nos a ideia de que o padrão biomecânico de execução técnica dos nadadores na técnica de bruços parece ter características diferentes quando comparados os dados dos dois métodos de reconstrução cinemática (DP e PS).

Published
2009

13. Synthesis and characterization of manganese oxyhydroxide manganite (γ -MnOOH) type

Author

Figueira,B. A. M., Angélica,R. S., and Scheller,T.

Subjects
manganita, birnessite, síntese, synthesis, manganite, birnessita
Abstract

Óxido hidróxido de manganês (γ - MnOOH) do tipo da manganita foi sintetizado por uma rota simples, em que a chave precursora K-birnessita foi preparada pelo método sol-gel. O tratamento hidrotermal da estrutura lamelar do tipo da birnessita favorece a obtenção de estruturas em túnel, sendo que o tamanho destes túneis depende das condições empregadas na síntese (pH, temperatura e tempo). A comprovação da formação de manganita sob as condições de síntese empregadas foi verificada pelas técnicas de difração de raios X, microscopia eletrônica de varredura, análises termogravimétrica e térmica diferencial e espectroscopia de infravermelho. Manganese oxyhydroxide (g - MnOOH) of the manganite type has been synthesized by a simple route with K-birnessite prepared by the sol-gel method. The hydrothermal treatment of the lamellar birnessite type structure facilitates the formation of tunnel structures where the size of the tunnels depends on the synthesis conditions (pH, temperature and time). The evidence of manganite formation under the synthesis conditions were made by X-ray diffraction, scanning electron microscopy, thermogravimetry, differential thermal analysis and infrared spectroscopy.

Published
2008

16. Comparative analysis of national and foreign players' performance in Euroleague Basketball.

Author

Paulauskas R, Kasparavicius R, Stumbras M, and Figueira B

Subjects
Humans, Male, Athletes, Adult, Young Adult, Basketball, Athletic Performance
Abstract

This study aimed to quantitatively assess the statistical contributions between foreign and national players in men's Euroleague Basketball. Data from 588 games in the 2021-2022 regular season and 612 games in the 2022-2023 regular season were analyzed through non-participant observation. Paired t-tests and Wilcoxon tests were employed to analyse variables with normal and non-normal distributions, respectively. The analysis indicated significant differences (p<0.05) between local and foreign players across several key variables, including Minutes, Points, Average Points, Usage Percentage, Individual Offensive Rating, Individual Defensive Rating, and True Shooting Percentage. These findings suggest pronounced distinctions between foreign players and national players concerning game volume indicators and game performance efficiency. Foreign players exhibited dominance in critical areas, such as playing time, total points scored, and average points per game, underscoring their substantial contributions to their respective teams. Consequently, these results offer practical implications for players, coaches, and fitness trainers, allowing for the design of more tailored training programs that account for distinct offensive and defensive needs, as well as the heightened physical demands experienced throughout the season., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Paulauskas et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)

Published
2024
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17. Echoes through time: amazing inferences from a fossil bat.

Author

Greville LJS, Hou L, Kumbhani HAW, Nogueira E Figueira B, Vanderwolf KJ, Leys RAC, Sivatheesan M, Pianta TP, and McGuire LP

Abstract

Sister to the Chiroptera crown-clade, the 50 million year old Vielasia sigei is suggested to have used laryngeal echolocation based on morphometric analyses. We discuss how Vielasia's discovery influences our understanding of the evolution of echolocation in bats and the insights fossils provide to the lives of extinct species., (© 2024. The Author(s).)

Published
2024
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18. Muscle Oxygenation Measured with Near-Infrared Spectroscopy Following Different Intermittent Training Protocols in a World-Class Kayaker-A Case Study.

Author

Paulauskas R, Nekriošius R, Dadelienė R, Sousa A, and Figueira B

Subjects
Exercise Test methods, Quadriceps Muscle, Exercise, Muscle, Skeletal physiology, Oxygen Consumption physiology, Spectroscopy, Near-Infrared methods, High-Intensity Interval Training methods
Abstract

Training elite kayakers at a distance of 1000 m is associated with aerobic and anaerobic metabolism, while intermittent training, in a variety of forms, is one of the effective ways to improve cardiorespiratory and metabolic function. Thus, this study aimed to investigate muscle oxygenation responses during repetition training (RT), interval training (IT), and sprint interval training (SIT). Near-infrared spectroscopy (NIRS) monitors were placed on the latissimus dorsi (LD), pectoralis major (PM), and vastus lateralis (VL) of a world-class kayaker during their preparatory period. The intensity of work, relief, and recovery intervals were the independent variables that were manipulated using three different training protocols. The inferential analysis between intermittent training protocols showed significant differences for all variables except total the hemoglobin (tHb) index in LD during bout 2 (F = 2.83, p = 0.1, ηp2 = 0.205); bout 3 (F = 2.7, p = 0.125, ηp2 = 0.193); bout 4 (F = 1.8, p = 0.202, ηp2 = 0.141); and bout 6 (F = 1.1, p = 0.327, ηp2 = 0.092). During the rest bouts, all training protocols showed significant differences for all variables except muscle oxygen saturation (SmO 2 ) in the VL during bout 5 (F = 4.4, p = 0.053, ηp2 = 0.286) and tHb in VL during bout 1 (F = 2.28, p = 0.132, ηp2 = 0.172); bout 2 (F = 0.564, p = 0.561, ηp2 = 0.049); bout 3 (F = 1.752, p = 0.205, ηp2 = 0.137); bout 4 (F = 1.216, p = 0.301, ηp2 = 0.1); and bout 6 (F = 4.146, p = 0.053, ηp2 = 0.274). The comparison between IT protocols RT and SIT presented similar results. All variables presented higher values during SIT, except HR results. Finally, the comparison between IT and SIT showed significant differences in several variables, and a clear trend was identified. The results of this study suggest that the application of different intermittent exercise protocols promotes distinct and significant changes in the peripheral effect of muscle oxygenation in response to training stimuli and may be internal predictors of hemodynamic and metabolic changes.

Published
2022
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19. Exploring the impact of the COVID-19 pandemic in Euroleague Basketball.

Author

Paulauskas R, Stumbras M, Coutinho D, and Figueira B

Abstract

The aim of this study was to understand how training and playing conditions during the COVID-19 pandemic affected the performance of Euroleague Basketball players. Using a non-participant observation analysis, the study compared the seasons before the lockdown (2018-2019 and 2019-2020; pre-pandemic) with the season after restart (2020-2021; pandemic). Paired t -tests and Wilcoxon tests were applied for variables with normal and non-normal distributions, respectively. The results revealed significant changes ( p < 0.05) in several offensive and defensive performance-related variables during pandemic times (without attendance): free throw attempts, free throw percentage, turnovers, three-point attempt rate, fouls (small effect sizes, ESs), points, and possessions (trivial ES). The pre-pandemic HA (70%) significantly decreased after the lockdown, with games played with no crowd (∼51%; p = 0.018, large ES). The one-sample t -test showed that the HA after the COVID-19 interruption was not significantly greater than 50%, indicating that the HA did not endure during the pandemic condition. Although significant differences between home and away teams were found for most performance-related variables (excepting turnovers) in both pre-pandemic and pandemic conditions, variations of the relative HA were only significant for free throw attempts (large ES), points (medium ES), and turnovers (medium ES). The results of this study showed that performance variables were affected by the COVID-19 lockdown. Thus, these findings may help coaches, players, and referees to counteract unwanted competitive events and improve their overall performance, regardless of the contextual/situational circumstances encountered., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Paulauskas, Stumbras, Coutinho and Figueira.)

Published
2022
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20. Effects of small-sided games vs. simulated match training on physical performance of youth female handball players.

Author

Mikalonytė R, Paulauskas R, Abade E, and Figueira B

Subjects
Adolescent, Female, Homocysteine analogs & derivatives, Humans, Physical Functional Performance, Seasons, Athletic Performance, Running
Abstract

The aim of this study was to compare the effects of different Small-Sided games (SSG) formats and simulated match handball training (SMHT) on handball player's physical performance and game activity profile. Twenty-four youth female handball players (age: 16.2 ± 1.5 years) participated in this study. The study was conducted during the first part of the competitive handball season and lasted for 10 weeks with 2 sessions per week in non-consecutive days: 1 week of pretesting, 8 weeks of specific training, and 1 week of post-testing. A two-group parallel randomized, pre- to post-test design was used to compare 2 different training groups: SSG training group (n = 12) and SMHT group (n = 12). The results showed larger improvements in drop jump height, jump power, absolute and relative anaerobic alactic power and 10 m sprint performances following the SSG training compared with the SMHT (p<0.05, ηp2 = ranging from 0.219 to 0.368). Game performance characteristics showed significant effect in SSD training in average sprint distance, total number of sprints and time between sprints (p<0.05, ηp2 = ranging from 0.08 to 0.292). The results of this study show that handball SSGs represent an adequate in-season strategy to promote a wide range of physical adaptations with improvements in running and jumping performance. This represents important information for coaches, since SSGs develop handball players' physical profiles while replicating tactical and technical features of the game. Nevertheless, simulated match training may be judiciously used to improve players' aerobic performance., Competing Interests: The authors have declared that no competing interests exist.

Published
2022
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21. Physiological Responses and Technical-Tactical Performance of Youth Basketball Players: A Brief Comparison between 3x3 and 5x5 Basketball.

Author

Figueira B, Mateus N, Esteves P, Dadelienė R, and Paulauskas R

Subjects
Adolescent, Bayes Theorem, Heart Rate physiology, Humans, Male, Athletic Performance physiology, Basketball physiology
Abstract

This study aims to examine youth players' physiological responses and technical-tactical performance when playing simulated 3x3 and 5x5 basketball games. Fifteen well-trained male basketball players (16.6 ± 0.2 years old) participated in scrimmage basketball games under two different conditions: 3x3 (half-court) and 5x5 (full-court). The players' heart rate, muscle oxygen saturation and total hemoglobin data were collected and computed to describe physiological responses, while video analysis was used to characterize their technical-tactical performance. A Bayesian one-way analysis of variance (ANOVA) was used to quantify the predictive influence of both game conditions on the physiological and the technical-tactical variables. The results indicated that different game conditions influenced the players' physiological responses slightly, as only hemoglobin sample entropy increased between the 3x3 and 5x5 game scenarios. Conversely, statistical differences in most of the technical-tactical variables were moderate and decisive in favour of the game condition model. Overall, this study emphasizes that playing 3x3 and 5x5 basketball games lead to relatively negligible differences in the players' physiological response but pronounced variations in their technical-tactical performance. Therefore, important implications may be drawn to the applied field as the specificity of technical-tactical adaptations when playing 3x3 or 5x5 formats should be considered by basketball coaches to better design the training sessions for players that fall within our sample age category., (© Journal of Sports Science and Medicine.)

Published
2022
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22. Mining wastes to improve bitumen performances: An example of circular economy.

Author

Calandra P, Quaranta S, Apolo Miranda Figueira B, Caputo P, Porto M, and Oliviero Rossi C

Subjects
Temperature, Hydrocarbons chemistry
Abstract

Hypothesis: Inorganic small particles stemming from mineral extraction (i.e. mining waste) could be used as additive for road paving applications to improve bitumen mechanical properties. Such an approach is expected to increase bitumen life-cycle cutting costs connected to their preparation and to reduce environmental issues. Experiment: Bitumens containing various amounts (up to 10% w/w) of filler made of mining tailings fine powder were characterized by means of oscillatory rheometry focusing on the effect of the filler content, temperature and filler milling time., Findings: (i) Superior resistance to stress, rutting, and fatigue were shown by the filler-containing mixtures. In addition, higher durability was observed for the filler concentration of 10% w/w. These effects were interpreted on the grounds of the physico-chemical interactions between the bitumen and the inorganic filler suggesting important utilizations. (ii) The present research points towards a circular economy path. Particularly, this study demonstrates how an abundant and potentially harmful waste can be converted into a high value-added component for road paving. Furthermore, increased durability of bitumen is beneficial in both economic and environmental terms., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Inc. All rights reserved.)

Published
2022
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23. Repeated Sprint Ability in Elite Basketball Players: The Effects of 10 × 30 m Vs. 20 × 15 m Exercise Protocols on Physiological Variables and Sprint Performance.

Author

Figueira B, Gonçalves B, Abade E, Paulauskas R, Masiulis N, Kamarauskas P, and Sampaio J

Abstract

Team sports players are required to perform repeated bouts of short-term high-intensity actions during the games. The present study aimed to examine the effects of a novel repeated sprint ability protocol (20×15 m) and compare it with the impact of a more traditional repeated sprint ability protocol (10×30 m). Twelve male elite Lithuanian basketball players (age 21.0 ± 2.0 y, body height 1.90 ± 0,07 m, body mass 86.2 ± 5.8 kg and training experience 12.0 ± 1.9 y) competing in the Lithuanian National Basketball Championship participated in this study. Participants completed three bouts of each repeated sprint protocol interspersed with 5 minutes of recovery. Results showed that the 20×15 m protocol caused a significant decrease in total sprint time (most likely; mean changes (%) with ± 90% of confidence limits, -9.4%; ± 0.7%) and a large decrease in blood lactate (most likely, -39.2%; ±12.8%) compared to the 10×30 m protocol. Despite small differences, the fatigue index presented a similar trend (possibly decrease, -23.7%; ± 38.8%). The exercise heart rate showed a very similar trend with trivial differences between the two protocols. The 20×15 m protocol presented a lower heart rate during recovery with small magnitude. Overall, the present study showed that the 20×15 m protocol seemed to be more representative of the specific basketball demands. Coaches should be aware that RSA training during the in-season may be an adequate stimulus to improve high-intensity runs and muscle power in high-level players., (© 2021 Bruno Figueira, Bruno Gonçalves, Eduardo Abade, Rūtenis Paulauskas, Nerijus Masiulis, Paulius Kamarauskas, Jaime Sampaio, published by Sciendo.)

Published
2021
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24. Basketball Game-Related Statistics that Discriminate Between European Players Competing in the NBA and In the Euroleague.

Author

Paulauskas R, Masiulis N, Vaquera A, Figueira B, and Sampaio J

Abstract

This study aimed to identify the game-related statistics that discriminated between Euroleague basketball players and European basketball players playing in the NBA, when competing in the same event (EuroBasket 2015). There was a total of 78 matches played by 24 teams in two groups of analysis: NBA, participants in the European Championship who played in the NBA season of 2014-2015 (n = 26); Euroleague, participants in the European Championship who played in the Euroleague season of 2014-2015 (n = 82). The players' performance variables were normalized to the time they spent on the court. To identify which variables best discriminated between the NBA and the Euroleague performance profiles, a descriptive discriminant analysis was conducted. Structure coefficients (SC) from the matrix greater than |0.30| were interpreted as meaningful contributors to discriminating between the groups. The results revealed a significant function (p = 0.008, canonical correlation of 0.51, Λ = 0.74, reclassification = 84.2%) and substantial performance differences in game-related statistics much related to the influence of body size (body height and mass), such as two-point field goals made (SC = 0.42) and missed (SC = 0.40), free-throws made (SC = 0.55), defensive rebounds (SC = 0.62), blocks (SC = 0.48) and suffered fouls (SC = 0.34). No differences were found at the level of game-related statistics indirectly related to perception, such as assists, turnovers or steals. Also, the greater body size in NBA players was likely related to higher variability in performance, thus, being an important topic for coaches and recruiters to analyse.

Published
2018
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25. Accuracy of a Basketball Indoor Tracking System Based on Standard Bluetooth Low Energy Channels (NBN23 ® ).

Author

Figueira B, Gonçalves B, Folgado H, Masiulis N, Calleja-González J, and Sampaio J

Abstract

The present study aims to identify the accuracy of the NBN23 &reg; system, an indoor tracking system based on radio-frequency and standard Bluetooth Low Energy channels. Twelve capture tags were attached to a custom cart with fixed distances of 0.5, 1.0, 1.5, and 1.8 m. The cart was pushed along a predetermined course following the lines of a standard dimensions Basketball court. The course was performed at low speed (<10.0 km/h), medium speed (>10.0 km/h and <20.0 km/h) and high speed (>20.0 km/h). Root mean square error (RMSE) and percentage of variance accounted for (%VAF) were used as accuracy measures. The obtained data showed acceptable accuracy results for both RMSE and %VAF, despite the expected degree of error in position measurement at higher speeds. The RMSE for all the distances and velocities presented an average absolute error of 0.30 ± 0.13 cm with 90.61 ± 8.34 of %VAF, in line with most available systems, and considered acceptable for indoor sports. The processing of data with filter correction seemed to reduce the noise and promote a lower relative error, increasing the %VAF for each measured distance. Research using positional-derived variables in Basketball is still very scarce; thus, this independent test of the NBN23 &reg; tracking system provides accuracy details and opens up opportunities to develop new performance indicators that help to optimize training adaptations and performance.

Published
2018
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26. Exploring how playing football with different age groups affects tactical behaviour and physical performance.

Author

Figueira B, Gonçalves B, Masiulis N, and Sampaio J

Abstract

The study aimed to compare footballers' performances when playing with teammates and opponents from the same age group with performances when playing with teammates and opponents of different age groups. Three football matches were played: i) under-15 (U15) players played with each other; ii) under-17 (U17) players played with each other; and iii) players under the age of 15 and 17 played with each other in two equivalent mixed age teams. The players' physical performance was measured using the distances covered at different speed categories and tactical behaviour was assessed using several positioning-derived variables. The results showed that, when playing in the mixed age condition, the U15 players increased the distance covered in sprinting intensity (18.1%; ±21.1%) and the U17 players increased the distance covered in jogging zones (6.8%; ±6.5%). The intra-team movement synchronization in longitudinal and lateral displacements was higher when U15 players confronted peers of the same age, in the first half (-13.4%; ±2.0%, -20.3%; ±5.7% respectively), and when U17 players confronting the mixed group, in both halves (-16.9%; ±2.5%, 9.8%; ±4.0% and 7.9%; ±5.7%, 10.6% ±4.4%, respectively). The differences between age groups and the mixed condition may be connected with the level of players' tactical expertise and adaptive positioning according to the dynamic environmental information. In general, these results suggest that mixing the age groups may be useful to promote a wider range of training session stimuli in these young football players.

Published
2018
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