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214 results on '"P. Brignon"'

1. Evaluation of a photonic lantern spatial demultiplexer based receiver for optical communication

Author

Billault, Vincent, Leviandier, Luc, Bourderionnet, Jerome, Pierre, Christophe, Sanquer, Raynald, Castaing, Marc, and Brignon, Arnaud

Subjects
Physics - Optics
Abstract

In this paper, we present a method based on a modal decomposition to quantify the efficiency of photonic lanterns (PL) based free space optical (FSO) communication receivers. We fabricate a seven port PL and we evaluate numerically the free space to fiber coupling efficiency based on a reconstruction of the fields at the PL FSO multimode port. We validate the numerical approach with an experimental characterization of the PL. Then we compare the PL to a commercial multiplane light converter spatial demultiplexer. The PL shows better coupling efficiency for low order spatial modes with orders of magnitude of demultiplexer size reduction. Finally we evaluate the PL receiver with a simulation of received optical wavefront in a FSO communication

Published
2024

2. Evaluation of a multimode receiver with a photonic integrated combiner for satellite to ground optical communications

Author

Billault, Vincent, Bourderionnet, Jerome, Leviandier, Luc, Feneyrou, Patrick, Maho, Anaelle, Sotom, Michel, and Brignon, Arnaud

Subjects
Electrical Engineering and Systems Science - Signal Processing, Physics - Optics
Abstract

Multimode receivers based on spatial or modal diversity are promising architectures to mitigate in real time the atmospheric turbulence effects for free space optical (FSO) communications. In this paper, we evaluate and comment on the dynamical communication performances of a FSO mode diversity receiver, based on a spatial demultiplexer and a silicon photonic coherent combiner, for an optical link from a GEO satellite to an optical ground station (OGS). We simulate time series of distorted wavefronts received by the OGS and we show numerically that the coherent combination of spatial modes mitigate the signal fading compared to a conventional single mode fiber (SMF) receiver. We verify this property in a laboratory environment by generating the wavefronts corresponding to the use case with an atmospheric propagation channel emulator. Then we modulate the optical carrier prior to the wavefront emulator with 10G OOK and DPSK data sequences to measure the BER performance of the proposed receiver during the time series emulation. Finally, we study and comment on the influence of the number of modes combined and the wavelength multiplexing on the BER performances. We prove that the mode diversity receiver provide a higher collection efficiency, has better BER performances and much less synchronization losses., Comment: 8 pages, 9 figures

Published
2022

3. Free space optical communication receiver based on a spatial demultiplexer and a photonic integrated coherent combining circuit

Author

Billault, Vincent, Bourderionnet, Jerome, Mazellier, Jean-Paul, Leviandier, Luc, Feneyrou, Patrick, Maho, Anaelle, Sotom, Michel, Normandin, Xavier, Lonjaret, Herve, and Brignon, Arnaud

Subjects
Physics - Applied Physics, Physics - Optics
Abstract

Atmospheric turbulences can generate scintillation or beam wandering phenomena that impairs free space optical (FSO) communication. In this paper, we propose and demonstrate a proof-of-concept FSO communication receiver based on a spatial demultiplexer and a photonic integrated circuit coherent combiner. The system collects the light from several Hermite Gauss spatial modes and coherently combine on chip the energy from the different modes into a single output. The FSO receiver is characterized with a wavefront emulator bench that generates arbitrary phase and intensity patterns. The multimode receiver presents a strong resilience to wavefront distortions, compared to a monomode FSO receiver. The system is then used to detect a modulation of the optical beam through a random wavefront profile., Comment: 8 pages, 7 figures

Published
2021
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6. Engaging Stakeholders to Develop a Decision Support Model of Conservation Risk and Management Capacity to Prioritize Investments in Bull Trout Recovery.

Author

Brignon, William R., Davis, M. Brian, Gunckel, Stephanie, Dunham, Jason, Meeuwig, Michael H., Allen, Chris, and Clements, Shaun

Subjects
INDUSTRIAL capacity, TROUT, ENVIRONMENTAL agencies, NATURAL resources management, WILDLIFE conservation
Abstract

Rarely are sufficient resources available to support the full suite of management actions to promote recovery of a species across its entire distribution. Decision support models are a tool that can inform natural resource management decisions with consideration of the perspectives from a variety of stakeholders who work across large geographic and jurisdictional extents. We offer an example of a decision support model that was developed by several federal and state natural resource agencies to rank Bull Trout Salvelinus confluentus core areas for prioritizing conservation investment within Oregon, USA. We engaged state‐level decision makers to identify parameters that were believed to be influential in determining funding allocations for Bull Trout core areas. Parameters were linked in a model framework that was further refined with input from local Bull Trout experts with knowledge specific to the various core areas. The model produces a relative priority value that is a combination of the conservation risk to the species and the management capacity to address threats. A series of sensitivity analyses suggested that Bull Trout persistence and threat score were most influential in determining the relative priority of a core area, whereas life history and genetic diversity were least influential. One of the more powerful products from this work is an interactive Web‐based application (https://das.ecosphere.fws.gov/public/obts/) that anyone can use to explore how their beliefs in parameter values will affect the relative priority of Bull Trout core areas across Oregon. Our modeling effort is an example of engaging stakeholders with different roles in species recovery and across a large geographic area to create a clearer path forward in allocating limited resources for species recovery. This approach can be employed to address a number of natural resource management situations across species and habitats. [ABSTRACT FROM AUTHOR]

Published
2023
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15. A risk-based method to prioritize cumulative impacts assessment on marine biodiversity and research policy for offshore wind farms in France.

Author

Brignon, Jean-Marc, Lejart, Morgane, Nexer, Maëlle, Michel, Sylvain, Quentric, Alan, and Thiebaud, Léa

Subjects
MARINE biodiversity, OFFSHORE wind power plants, WIND power
Abstract

This study developed the "ECUME" risk-based approach to identify and prioritize critical impact pathways to be considered in cumulative impact assessment of offshore windfarms, and for future research. The prioritization framework has been tested on two offshore windfarms projects located in the French part of the English Channel off the coast of Normandy, those of Fécamp and Courseulles-sur-Mer. The approach is based on a complete inventory of impact pathways, prioritizing those for which an impact assessment will be carried out. The aim was to avoid a "quantification bias" and elaborate a systemic vision. The novelty of the study is to apply a combination of expert judgement, consensus building, and a scoring system, to prioritize the pairs of pressures and receptors of the marine environment to work on. The scoring system is based on the ecological importance of receptors, the degree of knowledge on the effect of a pressure on a receptor and the sensitivity of each receptor to pressures. Priorities for research were also determined during the same process. Bringing together a large set of specialized marine environnement scientists, the initial challenge was to build a common vocabulary, and a shared understanding of the risk-based prioritization approach. This required significant time and effort but secured foundations for further work. This study confirms the increasingly shared view that adopting a risk-based approach considering adverse effects on receptors is an efficient way to assess cumulative impacts, to focus on critical impact pathways, and manage the scientific complexity and the significant uncertainties. • We prioritize issues in cumulative impact assessment of offshore windfarms. • Prioritization combines risk-based expert judgement and a scoring system. • It is also used to identify priority research areas for the future. • It was tested on two French offshore windfarm projects. • Such a risk-based approach allows to manage scientific complexity and uncertainties. [ABSTRACT FROM AUTHOR]

Published
2022
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17. Posterpräsentation

Author

Erb, N., Dürig, P., Dietz, U., Müller, K., Lachat R., Dietz Th. U., Berger E., Junod M., Schneider H., Gaudin, G., Borgeat, A., Taziari, G., Borgeat, A., Valiton, A., Fahti, M., Rifat, K., Schreyer, A., Maillard-Brignon, C., Vial, Y., Hohlfeld, P., Laurini, R., Pescia, G., Schnegg, A., Leuenberger, E., Dürig, P., Hänngi, W., and Sidiropoulos, D.

Published
1995
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22. Low incidence of SARS-CoV-2, risk factors of mortality and the course of illness in the French national cohort of dialysis patients

Author

Couchoud, Cécile, Bayer, Florian, Ayav, Carole, Béchade, Clémence, Brunet, Philippe, Chantrel, François, Frimat, Luc, Galland, Roula, Hourmant, Maryvonne, Laurain, Emmanuelle, Lobbedez, Thierry, Mercadal, Lucile, Moranne, Olivier, Abbassi, Abdelhamid, Debure, Alain, Guerraoui, Abdallah, Benmoussa, Abdelatif, Hamani, Abdelaziz, Ziane, Abdelaziz, Nefti, Abdelhamid, Hadj, Abdelkader, El Amari, Abderrahim, Ghazali, Abderrahmane, Abd El Fatah Mohamed, Abo Bakr, Laradi, Achour, Ben Ahmed, Adel, Sahar, Adel, Pillet, Adele, Lacraz, Adeline, Moinat, Adnan, Massoumi, Afshin, Pardon, Agathe, Beaudoin, Agnes Caillette, Debout, Agnes Chapelet, Mariot, Agnes, Rachi, Ahmed, Afiani, Aida, Boula, Aime Remy, Jalaby, Al, Cremault, Alain, Fournier, Alain, Jeanson, Alain, Lyon, Alain, Nony, Alain, Robert, Alain, Slingeneyer, Alain, Labatide, Alanor Agnes, Sartorius, Albane Brodin, Bensman, Albert, Fournier, Albert, Ranlin, Alex, Sandor, Alex Vido, Colombo, Alexandra, Duhem, Alexandra, Stancu, Alexandra, Dufay, Alexandre, Dumoulin, Alexandre, Ebel, Alexandre, Klein, Alexandre, Martin, Alexandre, Mouneimne, Alexandre, Seidowsky, Alexandre, De Martin, Alfio, Zannier, Alfredo, Aizel, Ali, Hafi, Ali, Diddaoui, Ali Zineddine, Heyani, Alim, Mocanu, Alina, Preda, Alina, Hafi, Aline, Talaszka, Aline, Duquesne, Alyette, Amaouche, Amar, Ghemmour, Amel, Simon, Amelie, Skalli, Amina, Boukadida, Amine, Ragab Eid, Amr Ekhlas, Fedorca, Ana, Baillet, Anabelle, Poyet, Anais, Giorgita, Ancuta Bouffandeau, Ratsimbazafy, Anderson, Pruna, Andre, Argiles, Angel, Testa, Angelo, Vandooren, Ann Karolien, Jolivot, Anne, Labadens, Anne Kolko, Lataste, Anne, Maisin, Anne, Paris, Anne, Sechet, Anne, Wuillai, Anne, Heng, Anne Elisabeth, Josse, Anne Gaelle, Querard, Anne Helene, Reboux, Anne Helene, Adra, Anne Laure, Faller, Anne Laure, Leclerc, Anne Laure, Poitou, Anne Laure, Manucci, Annie Lahoche, Jacquet, Antoine, Pommereau, Antoine, Thierry, Antoine, Adem, Arezki, Chapelet, Arielle, Del Bello, Arnaud, Delezire, Arnaud, Garnier, Arnaud, Guerard, Arnaud, Klisnick, Arnaud, Lionet, Arnaud, Roccabianca, Arnaud, Stolz, Arnaud, Capdeville, Arthur, Allal, Asma, Alrifai, Assem, Diarrassouba, Assetou, Djema, Assia, Carre, Assia Ferhat, Dubrasquet, Astrid Godron, Elmrabet, Atman Haddj, Jegado, Audrey, Thomas, Aurelia Bertholet, Salandre, Aurelie Davourie, Pajot, Aurelie, Lorthioir, Aurelien, Tiple, Aurelien, Sury, Aurore, Abokasem, Ayman, Sarraj, Ayman, Henaoui, Bachir, Chaghouri, Baher, Wehbe, Bassem, Ball, Beatrice, Viron, Beatrice, Issad, Belkassem, Corne, Benedicte Hodemon, Janbon, Benedicte, Deroure, Benjamin, Savenkoff, Benjamin, Jonon, Benoit, Vendrely, Benoit, Djelaleddine, Benyakoub, Ohry, Bernard, Painchart, Bernard, Strullu, Bernard, Temperville, Bernard, Ebikili, Bertin, Hacq, Bertrand, Morel, Bertrand, Aoun, Bilal, Muniz, Blanca, Chlih, Bouchra, Amara, Brahim, Mayor, Brice, Gilson, Brigitte, Llanas, Brigitte, Zins, Brigitte, Bourgeon, Bruno, Coevoet, Bruno, Guery, Bruno, Legallicier, Bruno, Paris, Bruno, Ranchin, Bruno, Seigneuric, Bruno, Dita, Camelia Ghiciuc, Prelipcean, Camelia, Hottelart, Carine Achard, Diet, Carine, Frangie, Carlos, Vela, Carlos, Muresan, Carmina, Deprele, Carole, Araujo, Caroline, Bidault, Caroline, Creput, Caroline, Delclaux, Caroline, Du Halgouet, Caroline, Favennec, Caroline, Freguin, Caroline, Vercel, Caroline Gourraud, Mesguen, Caroline, Obama, Caroline Ndomo, Poitou, Caroline, Dirhold, Caroline Preissig, Roubiou, Caroline, Albert, Catherine, Bessin, Catherine, De Marion Gaja, Catherine, Godart, Catherine, Lasseur, Catherine, Leocardi, Catherine, Lumbroso, Catherine, Melander, Catherine, Michel, Catherine, Maurouard, Catherine Quere, Rouannet, Catherine, Taddei, Catherine, Verove, Cathy, Guiraud, Cecile, Tafelin, Cecile, Baron, Cecile Turc, Formet, Cedric, Pinier, Cedric, De Ste Foy, Celia Lessore, Granolleras, Celine, Bennini, Chaouki, Cartou, Charles, Chazot, Charles, Jouzel, Charlotte, Badid, Cherif, Roubicek, Christa, Viaud, Christel, Verrier, Christelle, Chuet, Christian, Combe, Christian, Dabot, Christian, Duvic, Christian, Emond, Christian, Lagarde, Christian, Lamotte, Christian, Pain, Christian, Mousson, Christiane, Lorriaux, Christie, Beauchamp, Christine, Fumeron, Christine, Le Gurun, Christine, Leroy, Christine, Pietrement, Christine, Richer, Christine, Bouaka, Christophe, Charasse, Christophe, Goupy, Christophe, Ridel, Christophe, Castrale, Cindy, Detourne, Cindy, Francois, Clair, Presne, Claire, Trivin, Claire, Von Kotze, Clarissa, Bernard, Claude, Bonniol, Claude, Desvergnes, Claude, Raharivelina, Claude, Nistor, Claudia, Gueret, Claudine, Lloret, Claudine, Saltiel, Claudine, Rosati, Clelia, Rabate, Clementine, Stanescu, Corina, Ferrandini, Corinne, Guibergia, Corinne, Lemoine, Corinne, Passeron, Corinne, Kahil, Cynthia, Garrouste, Cyril, Van, Cyril Vo, Jolimoy, Cyrille, Kesraoui, Dalila, Jolly, Damien, Thibaudin, Damien, Teboulle, Dan, Daubresse, Daniel, Louvet, Daniel, Rasamimanantsoa, Daniel, Toledano, Daniel, Babici, Daniela, David, Daniela, Dincu, Daniela, Bruno, Danielle, May, Delia, Haussaire, Delphine, Viprey, Delphine Henriet, Bugnon, Denis, Fouque, Denis, Morin, Denis, Nour, Derradji, Mahmoud, Diab Mohamed, Cristescu, Diana Istrati, Aguilera, Didier, Coste, Didier, Hamel, Didier, Le Chapois, Didier, Testou, Didier, Erbilgin, Dilaver, Dahmane, Djamal, Quang, Doan Bui, Bertrand, Dominique, Besnier, Dominique, Blanchier, Dominique, Briffa, Dominique, Caux, Dominique, Durand, Dominique, Fleury, Dominique, Guerrot, Dominique, Hestin, Dominique, Jaubert, Dominique, Joly, Dominique, Lombart, Dominique, Pagniez, Dominique, Pierre, Dominique, Schohn, Dominique, Ikonga, Donatien, Visanica, Dorina, Bazin, Dorothee, Boury, Edouard, Maksour, Edouard, Agbonon, Ekoue, Harrami, Elarbi, Marcu, Elena, Tudorache, Elena, Caniot, Elisabeth, Semjen, Elisabeth, Tomkiewicz, Elisabeth, Scheidt, Elise, Gaboriau, Elke, Lamouroux, Elodie, Guiard, Elsa, Passos, Elsa Martin, Nsembani, Emerson, Fache, Emilie, Kalbacher, Emilie, Pambrun, Emilie, Pincon, Emilie, Launay, Emma Allain, Baron, Emmanuel, Dupuis, Emmanuel, Villar, Emmanuel, Charlin, Emmanuelle, Hecquet, Emmanuelle, Kohler, Emmanuelle, Laurain, Emmanuelle, Rosier, Emmanuelle, Figueroa, Enrique, Azoulay, Eric, Canivet, Eric, Daugas, Eric, Gauthier, Eric, Laruelle, Eric, Le Guen, Eric, Legrand, Eric, Moumas, Eric, Postec, Eric, Prinz, Eric, Renaudineau, Eric, Desport, Estelle, Sutra, Estelle Ricard, Berard, Etienne, Ged, Etienne, Robin, Etienne, Vilaine, Eve, Bargas, Evelyne, Namara, Evelyne Mac, Combarnous, François, Yazbeck, Fatima, Gerard, Fabien, Metivier, Fabien, Parazols, Fabien, Soulis, Fabien, Garnier, Fabrice, Messaoudene, Fadhila Pech, Haidar, Fadi, Boullenger, Fanny, Lepeytre, Fanny, Leroy, Fanny, Frejate, Fares, Bellahsene, Farid, Bellhasene, Farid, Saidani, Farid, Toure, Fatouma, Kriaa, Faycal, Nemmar, Fazia, Vetromile, Fernando, Chalmin, Florence, Lucats, Florence, Sens, Florence, Villemain, Florence, Plasse, Florent, Lebhour, Fouad, Schillinger, Francis, Berge, Franck, Bourdon, Franck, Bridoux, Franck, Reynaud, Franck, Babinet, Francois, Basse, Francois, Chantrel, Francois, Clair, Francois, Coulomb, Francois, De Cornelissen, Francois, Glowacki, Francois, Marchal, Francois, Maurice, Francois, Nobili, Francois, Pourreau, Francois, Provot, Francois, Amani, Francois Roux, Broux, Francoise, Bulte, Francoise, Heibel, Francoise, Leonetti, Francoise, Schott, Francoise Moussion, Le Roy, Frank, Besson, Frederic, Lavainne, Frederic, Tollis, Frederic, Bocquentin, Frederique, Meeus, Frederique, Vecina, Frederique, Von Ey, Friederike, Balit, Gabriel, Choukroun, Gabriel, Gruget, Gabriel, Huchard, Gabriel, Golea, Gabriella, Duneau, Gabrielle, Lefrancois, Gaelle, Pelle, Gaelle, Lebrun, Gaetan, Dumont, Genevieve, Brillet, Georges, Deschenes, Georges, Mourad, Georges, Stamatakis, Georges, Cazajous, Geraldine, D'ythurbide, Geraldine, Wiart, Geraldine Robitaille, Cardon, Gerard, Champion, Gerard, Deschodt, Gerard, Mangenot, Gerard, Motte, Gerard, Schortgen, Gerard, Boulahia, Ghada, Maakaroun, Ghassan, Michel, Ghylene Bourdat, Zanetta, Gilbert, Hufnagel, Gilles, Messier, Gilles, Piccoli, Giorgina, Desvergnes, Gregoire Couvrat, Bobrie, Guillaume, Bonnard, Guillaume, Clement, Guillaume, Jean, Guillaume, Queffeulou, Guillaume, Seret, Guillaume, Vernin, Guillaume, Delavaud, Guy, Lambrey, Guy, Rostoker, Guy, Poussard, Gwenaelle, Kesler, Gwenaelle Roussey, Leon, H., Aboubekr, Habib, Boulechfar, Hacene, Sekhri, Hacene, Hebibi, Hadia, Benalia, Hadjira, Fessi, Hafed, Atchia, Hafsabhai, Bittar, Haiat, Maiza, Hakim, Mazouz, Hakim, El Ali, Hamid, Bougrida, Hammouche, Van Der Pijl, Hans, Lokmane, Hassan, Izzedine, Hassane, Adda, Hassen, De Preneuf, Helene, Leray, Helene, Philippot, Helene, Boulanger, Henri, Merault, Henri, Renaud, Henri, Bonarek, Herve, Maheut, Herve, Nzeyimana, Hilaire, Mehama, Hocine, Zaidi, Hocine, Weclawiak, Hugo, Flodrops, Hugues, Karaaslan, Huseyin, Haskour, Ibrahim, Belhadj, Ihssen, Almoubarak, Imad, Haddad, Imad, Castellano, Ines, Ferrandiz, Ines, Daniliuc, Ioana, Darie, Ioana, Enache, Ioana, Prunescu, Ionut, Djiconkpode, Irenee, Shahapuni, Irina, Bouchoule, Isabelle, Devriendt, Isabelle, Kazes, Isabelle, Kolb, Isabelle, Landru, Isabelle, Poli, Isabelle, Rey, Isabelle, Segalen, Isabelle, Selcer, Isabelle, Vernier, Isabelle, Vrillon, Isabelle, Guenifi, Ismahane, Gheerbrandt, J. Dominique, Potier, Jacky, Becart, Jacques, Cledes, Jacques, Ducros, Jacques, Duvic, Jacques, Fourcade, Jacques, Gaultier, Jacques, Jurine, Jacques, Lebleu, Jacques, Ollier, Jacques, Charles, Jacques Ibsen, Yazji, Jamal, Mansour, Janette, Arnautou, Jean, Brocard, Jean, Carolfi, Jean, Montoriol, Jean, Gouin, Jean Baptiste, Palcoux, Jean Bernard, Bendini, Jean Christophe, Aldigier, Jean Claude, Alphonse, Jean Claude, Delbet, Jean Daniel, Bonne, Jean Francois, Cantin, Jean Francois, De Fremont, Jean Francois, Dessassis, Jean Francois, Subra, Jean Francois, Valentin, Jean Francois, Verdier, Jean Francois, Dion, Jean Jacques, Haultier, Jean Jacques, Montseny, Jean Jacques, Bacri, Jean Louis, Bouchet, Jean Louis, Mahe, Jean Luc, Chalopin, Jean Marc, Gabriel, Jean Marc, Hurot, Jean Marc, Lanau, Jean Marc, Batho, Jean Marie, Coulibaly, Jean Marie, Hardin, Jean Michel, Marc, Jean Michel, Poux, Jean Michel, Rebibou, Jean Michel, Tivollier, Jean Michel, Ottavioli, Jean Noel, Faucon, Jean Paul, Imiela, Jean Paul, Jaulin, Jean Paul, Masselot, Jean Paul, Ortiz, Jean Paul, Bourdenx, Jean Philippe, Devaux, Jean Philippe, Hammelin, Jean Philippe, Rivory, Jean Pierre, Wauquier, Jean Pierre, Larue, Jean Rene, Mondain, Jean Rene, Borde, Jean Sebastien, Virot, Jean Simon, Bosc, Jean Yves, Achiche, Jedjiga, Parasote, Jennifer, Diolez, Jeremie, Harambat, Jerome, Potier, Jerome, Sampol, Jerome, Mustel, Jihad, Lefevre, Jean Jacques, Maurizi, Jocelyne, Gamberoni, Joel, Claudeon, Joelle, Terzic, Joelle, Rogol, Joffrey, Sayegh, Johnny, Cardozo, Jorge, Brasseur, Jose, Guiserix, Jose, Barsumau, Joseph, Albaret, Julie, Beaume, Julie, Attias, Julie Sohier, Dehay, Julien, Hogan, Julien, Journet, Julien, Ott, Julien, Baleynaud, Juliette, Bacchetta, Justine, Faucher, Justine, Yousfi, Kamel, Dardim, Karim, Clabault, Karine, Moreau, Karine, Thomas, Kedna, Sirajedine, Khaled, Chedid, Khalil, El Kaeoui, Khalil, El Karoui, Khalil, Bouachi, Khedidja, Hue, Kheira, El Nasser, Khuzama, Akposso, Kodso, Kunz, Kristian, Bijak, Krzysztof, Kihal, Lilia, Rasoloarijaona, L., Harbouche, Laid, Bencheikh, Larbi, Lamriben, Larbie, Hanafi, Latifa, Parvez, Laura Braun, Champion, Laure, Croze, Laure, Eprinchard, Laure, Patrier, Laure, Nicolet, Laurence, Vrigneaud, Laurence, Duflot, Laurent, Mackaya, Leandre, Chenine, Leila, Odry, Leon, Tamiji, Lili Taghipour, Bouzar, Lilia Antri, Nga Messi, Liliane Ngango, Le Mouellic, Lionel, Mandart, Lise, Weis, Lise, Pouteau, Lise Marie, Georgieva, Lora, Vitanova, Lorita, Chalabi, Lotfi, Delvallez, Luc, Frimat, Luc, Fromentin, Luc, Marty, Luc, Monjot, Luc, Spataru, Luciana, Bessenay, Lucie, Boissinot, Lucie, Wajsbrot, Lucie, Rakoff, Lucien, Lebourg, Ludivine, Perez, Lydie, Lafage, Lyliane, Azzouz, Lynda, Dumoulin, Madeleine, Ouziala, Messaoud, Joseph, Maan, Brahimi, Mabrouk, Fat, Maeva Wong, Fort, Magalie, Nakhla, Magued, Abtahi, Mahdi, Albadawy, Mahen, Alouach, Mahmoud, Mezghani, Mahmoud, Daroux, Maite, Boukelmoune, Maklouf, Dhib, Malek, Touam, Malik, Dubau, Malina, Balde, Mamadou, Khoa, Man Nguyen, Ismer, Manfred, Mehdi, Manolie, Laforet, Manon, Bouiller, Marc, Eugene, Marc, Fila, Marc, Hazzan, Marc, Kribs, Marc, Ladriere, Marc, Lebot, Marc, Padilla, Marc, Souid, Marc, Marraoui, Marcel, Burbach, Maren, Manescu, Maria, Noguera Gonzalez, Maria Eugenia, Revenco, Mariana, Terrasse, Marianne, Essi, Marie, Macher, Marie Alice, Nogier, Marie Beatrice, Cazin, Marie Cecile, Schweitzer Camoin, Marie Christine, Thouret, Marie Christine, Hannaert, Marie Claude, Servel, Marie France, Chabannier, Marie Helene, Coudert Krier, Marie Jeanne, Catoliquot, Marie Noelle, Guillodo, Marie Paule, Gavard, Marie Sophie, Vairon Codaccioni, Marie Xaviere, Rabec, Marina, Freist, Marine, Gauthier, Marion, Lemaire, Marion, Mehrenberger, Marion, Venot, Marion, Pongas, Marios, Diant, Marlene Beaubrun, Levannier, Martial, Bertaux, Martine, Jablonski, Mathieu, Sacquepee, Mathieu, Dargelos, Mathilde, Lemoine, Mathilde, Tamain, Mathilde, Monge, Matthieu, Reberolle, Matthieu, Cousin, Maud, Francois, Maud, Baron, Maurice, Hoffmann, Maxime, Ingwiller, Maxime, Touzot, Maxime, Mohajer, Mederick, Maaz, Mehadji, Hanoy, Melanie, Marroc, Melanie, Cuny, Melodie, Van Der Straaten, Menno, Serveaux, Mf., Basteri, Michel, Chong, Michel Fen, Hecht, Michel, Massad, Michel, Normand, Michel, Olmer, Michel, Tolani, Michel, Tsimaratos, Michel, Hemery, Michele, Kessler, Michele, Esposito, Miguel, Shenouda, Milad, Kareche, Mimi, Khalili, Mina, Diaconita, Mirella, Rifard, Mohamad Khair, Aladib, Mohamed, Belmouaz, Mohamed, Brahim, Mohamed, Diouani, Mohamed, Cherif, Mohamed Fodil, Jamali, Mohamed, Maghlaoua, Mohamed, Meddeb, Mohamed, Ramdane, Mohamed, Rifaat, Mohamed, Islam, Mohamed Sharifull, Abbade, Mohamed Adnan, Amrandi, Mokhtar, Chawki, Mokhtar, Ciobotaru, Monica, Indrieis, Monica, Chanas, Monique, Hoarau, Monique, Tomeh, Monzer, Bellou, Moufida, Bouzernidj, Mouloud, Ammor, Mounia, Guergour, Mounir, Benzakour, Mountassir, Hachicha, Mourad, Coulibaly, Moussa, Smati, Mustafa, Al Morabiti, Mustapha, Amirou, Mustapha, Isnard, Myriam, Pastural, Myriam, Pujo, Myriam, Boumendjel, Nourredine, Majbri, Nabil, Goumri, Nabila, Mingat, Nadege, Bassilios, Nader, Kerkeni, Nadia, Sedrati, Nadia, Soltani, Nadia, Maroun, Nadine, Neyrat, Nadine, Luang, Nahn, El Esper, Najeh, Ammar, Naji, Ghali, Nasredine, Hamdini, Nasser, Noel, Natacha, Potelune, Natacha, Maisonneuve, Nathalie, Pertuiset, Nathalie, Raynal, Nathalie, Vittoz, Nathalie, Terki, Nazim, Castin, Nelly, Nankeu, Nestor, Bouvier, Nicolas, Keller, Nicolas, Legros, Nicolas, Peters, Nicolas, Quirin, Nicolas, Lefrancois, Nicole, Monnier, Nicole, Rance, Nicole, Bruckmann, Niels, Mertens, Noel, Lorcy, Nolwenn, Gilbert, Olivia, Coldefy, Olivier, Drouineau, Olivier, Dunand, Olivier, Fritz, Olivier, Imhoff, Olivier, Kourilsky, Olivier, Lavelle, Olivier, Moranne, Olivier, Papin, Olivier, Roques, Olivier, Le Maner, Ophelie, Benbrahim, Oussamah Fikri, Erina Torres, Pablo Antonio, Urena Torres, Pablo Antonio, Malvezzi, Paolo, Bindi, Pascal, Cluzel, Pascal, Fontanier, Pascal, Wheatley, Pascal, Depraetre, Pascale, Dubosq, Pascale, Halin, Pascale, Sebahoun, Pascale, Siohan, Pascale, Testevuide, Pascale, Deteix, Patrice, Nolen, Patrice, Hue, Patricia, Lemarchand, Patricia, Donnadieu, Patrick, Fievet, Patrick, Fohrer, Patrick, Francais, Patrick, Giraud, Patrick, Hallonet, Patrick, Henri, Patrick, Michaut, Patrick, Michaut, Patrick, Niaudet, Patrick, Pauly, Patrick, Thomas, Patrick, Deleaval, Patrik, Finielz, Paul, Stroumza, Paul, Yverneau, Paule Hardy, Caillard, Pauline, Palacin, Pedro, Aubertin, Perrine, Attias, Philippe, Brunet, Philippe, Chauveau, Philippe, Coindre, Philippe, Coste, Philippe, Dubot, Philippe, Fournier, Philippe, Hiernaux, Philippe, Jousset, Philippe, Yue Wah, Philippe Lan, Lang, Philippe, Le Cacheux, Philippe, Dupont, Philippe Martin, Michel, Philippe, Mirgaine, Philippe, Moriniere, Philippe, Nicoud, Philippe, Rieu, Philippe, Rousseau, Philippe, Sporer, Philippe, Thorel, Philippe, Vanhille, Philippe, Vigeral, Philippe, Zaoui, Philippe, Bataille, Pierre, Brignon, Pierre, Filipozzi, Pierre, Housset, Pierre, Peyronnet, Pierre, Ramperez, Pierre, Vautrin, Pierre, Michel, Pierre Alexandre, Westeel, Pierre Francois, Carron, Pierre Louis, Durand, Pierre Yves, Parent, Pierrot, Seniuta, Piotr, Kuentz, François, Fraoui, Rabah, Tetaz, Rachel, Amaria, Rachid, Bourouma, Rachid, Djeffal, Rachid, Nebbad, Rachida, Allal, Radia, Dimulescu, Radu, Boustani, Rafaat, Mesbah, Rafik, Makdassi, Raifat, Diab, Raji, Puslenghea, Raluca, Roura, Raoul, Khayat, Rateb, Azar, Raymond, Frayssinet, Raymond, Monkam, Regine, Boulahrouz, Rehouni, Boudet, Remi, Demontis, Renato, Gansey, Renaud, Cuvelier, Rene, Schmitt, Renee, Noordally, Reschad, Binaut, Reynald, Latif, Rezkallah, Dufresne, Richard, Montagnac, Richard, Reade, Richard, Genin, Robert, Novo, Robert, Fickl, Rocsana, Dufresne, Roger, Magnol, Roger, Issautier, Roland, Mortelette, Romain, Delaval, Ronan, Lohro, Ronan, M'barga, Roseline, Beau, S., Dupuis, Clémentine, Vidil, Marie Jacques, Hacini, Sabria, Dahmoune, Said, Lekhal, Saliha, Sakso, Salima Ahriz, Saksi, Salima, Citarda, Salvatore, Boubenider, Samir, Kassis, Samuel, Verhille, Sandra, Genestier, Sandrine, Muller, Sandrine, Krid, Saoussen, Richter, Sarah, Delbes, Sebastien, Mailliez, Sebastien, Veillon, Sebastien, Nony, Sébastien, Benarbia, Seddick, Beaudreuil, Severine, Benyaghla, Sidi Ali, Duquennoy, Simon, Baluta, Simona, Boncila, Simona, Mzoughi, Sonia, Ribal, Sonia, Acamer, Sophie, Chauvet, Sophie, Girerd, Sophie, Ozenne, Sophie, Parahy, Sophie, Duval, Sophie Rubens, Taque, Sophie, Menouer, Soraya, Chargui, Soumaya, Bataille, Stanislas, Barbier, Stephane, Billion, Stephane, Roueff, Stephane, Torner, Stephane, Martin, Stephane Jean, Coupel, Stephanie, Cloarec, Sylvie, Lavaud, Sylvie, Leou, Sylvie, Chatelet, T., Onesta, Tania, Benhabib, Tassadit, Bensalem, Tayeb, Dimulescu, Theodora, Sawadogo, Theophile, Hitze, Thibault Dolley, Baranger, Thierry, Boudemaghe, Thierry, Hannedouche, Thierry, Krummel, Thierry, Lobbedez, Thierry, Milcent, Thierry, Dervaux, Thomas, Guincestre, Thomas, Kofman, Thomas, Raphael, Thomas, Sadreux, Thomas, Ulinski, Tim, Roger, Tiphaine Guyon, Serrato, Tomas, Kofman, Tomek, Wong, Tony, Boubia, Toufik, Gbindoun, Ubald Assogba, Khuzaie, Usama, Caudwell, Valerie, Chatelet, Valerie, Crougneau, Valerie, De Precigout, Valerie, Drouillat, Valerie, Galantine, Valerie, Hugot, Valerie Granveau, Leroy, Valerie, Boubia, Veronique, Falque, Veronique, Fournier, Veronique, Queron, Veronique, Viviani, Veronique, Gueuttin, Victor, Panescu, Victor, Calonge, Victorio Menoyo, Nguyen, Viet, Allot, Vincent, Delattre, Vincent, Leduc, Vincent, Pradier, Vincent, Aglae, Violaine Emal, Badulescu, Viorica, Molina, Virginia, Besson, Virginie, Chaigne, Virginie, Jaber, Waddah, Boudi, Wael, El Haggan, Wael, Guillon, Wen Qin, Aneni, Wided Tabbi, Hanf, William, Kohn, Wladimir, Bellenfant, Xavier, Gaudry, Xavier Moreau, Delmas, Yahsou, Knefati, Yannick, Saingra, Yannick, Tirolien, Yannick, Mann, Youssef, Brunak, Yvan, Dimitrov, Yves, Doussy, Yves, Tanter, Yves, Benabid, Zaid, Soltani, Zaara, Boukerroucha, Zacharia, Takla, Zafer, Ramanantsialonina, Zana, Dickson, Zara, Tubail, Zead, Pour, Zoe Koochaki, Boukhalfa, Zohra, and Jacquot, Zohra

Abstract

The aim of this study was to estimate the incidence of COVID-19 disease in the French national population of dialysis patients, their course of illness and to identify the risk factors associated with mortality. Our study included all patients on dialysis recorded in the French REIN Registry in April 2020. Clinical characteristics at last follow-up and the evolution of COVID-19 illness severity over time were recorded for diagnosed cases (either suspicious clinical symptoms, characteristic signs on the chest scan or a positive reverse transcription polymerase chain reaction) for SARS-CoV-2. A total of 1,621 infected patients were reported on the REIN registry from March 16th, 2020 to May 4th, 2020. Of these, 344 died. The prevalence of COVID-19 patients varied from less than 1% to 10% between regions. The probability of being a case was higher in males, patients with diabetes, those in need of assistance for transfer or treated at a self-care unit. Dialysis at home was associated with a lower probability of being infected as was being a smoker, a former smoker, having an active malignancy, or peripheral vascular disease. Mortality in diagnosed cases (21%) was associated with the same causes as in the general population. Higher age, hypoalbuminemia and the presence of an ischemic heart disease were statistically independently associated with a higher risk of death. Being treated at a selfcare unit was associated with a lower risk. Thus, our study showed a relatively low frequency of COVID-19 among dialysis patients contrary to what might have been assumed.

Published
2020
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24. Decision Analysis for the Reintroduction of Bull Trout into the Lower Pend Oreille River, Washington.

Author

Benjamin, Joseph R., Brignon, William R., and Dunham, Jason B.

Subjects
DECISION making, TROUT, FISHWAYS, RIVERS, BUILDING operation management
Abstract

The decision to reintroduce a species can be difficult owing to conflicting opinions and objectives as well as uncertainty over the outcome. Structured decision making addresses these considerations by identifying realistic fundamental objectives and building achievable management alternatives within a quantitative modeling framework. The process is driven by participation of stakeholders that represent diverse objectives, policy mandates, and opinions regarding decision alternatives. We applied structured decision making to evaluate the reintroduction of Bull Trout Salvelinus confluentus into the lower Pend Oreille River in northeastern Washington State. We engaged stakeholders from tribal, municipal, county, state, and federal agencies to specify fundamental objectives, formulate feasible reintroduction decisions, and conceptualize a modeling framework that included biological information and stakeholder assumptions. Stakeholders requested iterative decision sets to determine the optimal recipient streams and release strategies. The optimal decision—based on the fundamental objective of maximizing adult abundance at year 10—was artificial propagation of 4,500 juvenile Bull Trout coupled with translocation of 25 adult migrants to be reintroduced into a tributary and lake system (Sullivan Lake/Harvey Creek) that produced at least 18% more adult fish relative to alternatives. Sensitivity analyses were robust to the identity of the recipient stream (i.e., Sullivan Lake/Harvey Creek was always the optimal recipient stream) but suggested that maximizing the number of artificially produced juveniles released could generate a similar number of adult Bull Trout as the coupled‐release strategy. Results also suggested that ensuring fish passage at Albeni Falls Dam on the main‐stem Pend Oreille River could increase the abundance of adult fish. The process followed for this case study can be adapted to similar decisions regarding reintroduction or other translocations of fish in other systems. [ABSTRACT FROM AUTHOR]

Published
2019
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25. Homologous recombination and transposition generate chromosome I neopolymorphism during meiosis in Saccharomyces cerevisiae

Author

F. Solano-Serena, Cécile Neuvéglise, F. Gendre, P. Brignon, Claude Gaillardin, Serge Casaregola, Laboratoire de génétique moléculaire et cellulaire, Institut National de la Recherche Agronomique (INRA), Danone Research, Groupe DANONE, Microbiologie et Génétique Moléculaire (MGM), Institut National de la Recherche Agronomique (INRA)-Institut National Agronomique Paris-Grignon (INA P-G)-Centre National de la Recherche Scientifique (CNRS), and DANONE, Admin

Subjects
[SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT], [SDV]Life Sciences [q-bio], Molecular Sequence Data, Restriction Mapping, Saccharomyces cerevisiae, Biology, Polymerase Chain Reaction, 03 medical and health sciences, Chromosome 16, Chromosome 18, Sequence Homology, Nucleic Acid, Chromosome 19, Genetics, DNA, Fungal, Molecular Biology, ComputingMilieux_MISCELLANEOUS, Crosses, Genetic, Chromosome 12, DNA Primers, 030304 developmental biology, Recombination, Genetic, 0303 health sciences, Polymorphism, Genetic, Base Sequence, [SDV.OT] Life Sciences [q-bio]/Other [q-bio.OT], 030306 microbiology, Terminal Repeat Sequences, Chromosome Mapping, Molecular biology, Electrophoresis, Gel, Pulsed-Field, Chromosome 17 (human), Meiosis, Chromosome 3, Chromosomes, Fungal, Chromosome 21, Sequence Alignment, Chromosome 22
Abstract

We have studied the meiotic segregation of a chromosome length polymorphism (CLP) in the yeast Saccharomyces cerevisiae. The neopolymorphism frequently observed within the smallest chromosomes (I, VI, III and IX) is not completely understood. We focused on the analysis of the structure of chromosome I in 88 segregants from a cross between YNN295 and FL100trp. Strain FL100trp is known to carry a reciprocal translocation between the left arm of chromosome III and the right arm of chromosome I. PCR and Southern hybridization analyses were performed and a method for the rapid detection of chromosome I rearrangements was developed. Seven chromosome I types were identified among the 88 segregants. We detected 22 recombination events between homologous chromosomes I and seven ectopic recombination events between FL100trp chromosome III and YNN295 chromosome I. These recombination events occurred in 20 of the 22 tetrads studied (91%). Nine tetrads (41%) showed two recombination events. This showed that homologous recombination involving polymorphic homologues or heterologous chromosomes is the main source of neopolymorphism. Only one of the seven chromosome I variants resulted from a transposition event rather than a recombination event. We demonstrated that a Tyl element had transposed within the translocated region of chromosome I, generating mutations in the 3&39; LTR, at the border between U5 and PBS.

Published
2000
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29. Étude phénoménologique : l’expérience vécue de cadre de santé vis-à-vis des valeurs de l’équipe lors de l’intégration d’un nouveau soignant en Ehpad

Author

Dornet, Amandine, Brignon, Béatrice, and Long, Thierry

Abstract

L’intégration d’un nouveau soignant en établissements d’hébergement pour personnes âgées dépendantes est essentielle dans un contexte de manque d’attractivité des métiers du grand âge. En s’appuyant sur les approches culturalistes et interactionnistes de l’intégration, cette étude phénoménologique a pour but de connaître le rôle et l’expérience du cadre de santé dans la construction des valeurs de l’équipe lors de l’intégration. Elle vise à comprendre le management et la dynamique d’équipe mis en place ainsi que les conséquences sur l’intégration. Les résultats mettent en évidence les valeurs intégratives recherchées par les cadres de santé au sein des contraintes auxquelles ils sont confrontés. Une triade émerge in fine de cette recherche : valeurs, intégration, cohésion.

Published
2024
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30. Prognostic survival factors in elderly renal failure patients treated with peritoneal dialysis: a nine-year retrospective study

Author

P. Brignon, Bernadette Faller, Sandrine Genestier, F. Chantrel, Nicolas Meyer, Mehadji Maaz, Sandrine Muller, and Farideh Alenabi

Subjects
Male, medicine.medical_specialty, Time Factors, medicine.medical_treatment, Peritoneal dialysis, Internal medicine, Medicine, Humans, Renal Insufficiency, Aged, Retrospective Studies, Aged, 80 and over, business.industry, Retrospective cohort study, General Medicine, medicine.disease, Prognosis, Surgery, Survival Rate, Nephrology, Multivariate Analysis, Female, Dialisis peritoneal, business, Peritoneal Dialysis, Kidney disease
Abstract

Background Few studies specifically investigating elderly patients on peritoneal dialysis (PD) have been conducted and great uncertainty remains on the factors involved in the vital prognosis. The objective of this study was to describe our population of patients aged 75 years or older at the time PD was initiated and to study their survival in terms of the relevant nephro-geriatric criteria inventoried at the beginning of treatment. Methods We retrospectively analyzed the data of all the elderly patients that began first-line PD in our center between 1 January 1997 and 31 July 2006 ( n = 112). Results Mean duration of survival on PD was 19.6 ± 13.9 months; by the end of the study 87 patients had died and 7 had been transferred to hemodialysis. The Cox model multivariate analysis of survival allowed us to select 5 independent predictive variables that had a considerable impact on survival: absence of nephrologic care before dialysis, associated comorbidities (Charlson Comorbidity Index), loss of physical and/or mental autonomy (AGGIR group), and polymedication. Above and beyond the weight of these clinical variables, institutionalization or, more generally, social isolation was a determining factor for the duration of survival in PD. Conclusion Any patient considered for peritoneal dialysis should be evaluated by a multidisciplinary team in collaboration with geriatric specialists for both the overall medical situation and the social and family environment.

Published
2010

31. Continuous Ambulatory Peritoneal Dialysis (CAPD) or Center Hemodialysis? Retrospective Evaluation of the Success of Both Methods

Author

J. F. Marichal, Beatrice Cordier, P. Brignon, and Bernadette Faller

Subjects
medicine.medical_specialty, business.industry, medicine.medical_treatment, Continuous ambulatory peritoneal dialysis, 030232 urology & nephrology, Retrospective cohort study, General Medicine, urologic and male genital diseases, Peritoneal dialysis, 03 medical and health sciences, 0302 clinical medicine, Nephrology, Emergency medicine, medicine, 030212 general & internal medicine, Hemodialysis, business, Intensive care medicine, Dialysis
Abstract

In a retrospective study, the authors analysed the dialysis-technique success rate in 276 chronic renal patients. Of these, 137 patients have been treated with in center hemodialysis (CHD) from 1972 to 1989 and 139 with continuous ambulatory peritoneal dialysis (CAPD) from 1978 to 1989. The six-year technique success rate was 28% in CAPD and 31% in CHD (statistically not significantly different). Various risk factors influence the technique-success rate of both methods in the same way. The results suggest that in our center CAPD is as effective as CHD in the treatment of patients with endstage renal failure.

Published
1990
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32. [Preanalytical variability of parathyroid hormone measurement in dialysis patients; application to Elecsys 2010 (Roche) automate]

Author

X, Parent, F, Alenabi, E, Etienne, P, Brignon, F, Chantrel, and L, Meynaud-Kraemer

Subjects
Observer Variation, Serum, Automation, Plasma, Parathyroid Hormone, Renal Dialysis, Humans, Reproducibility of Results, Edetic Acid
Abstract

The working group PTH-Vitamin D of the SFBC recently underlined the great intertechnic variability of parathormone (PTH) assays. At the same time, the data of the literature showed an impact of the preanalytic stage, significant and variable according to the automat used. We worked on the automat Roche Elecsys. On quickly centrifuged and decanted samples, the small difference in results between serum and plasma EDTA (6%) is compatible with an indifferent use of the two samples for dialysed patients. The reputation of greater stability on plasma EDTA seems primarily based on studies after decantation of plasma. The extension to a non decanted sample, maintained on primary tube for deferred shipping to the laboratory would require verification. Concerning the serum, on tube with serum separator, after early centrifugation, we checked the stability of the PTH measurement for a delay lower than or equal to 4 hours. For an extrahospital structure of dialysis, in the conditions of an early and an on site centrifugation, this delay allows to defer the transport of the primary closed tube to the laboratory. Contrary to plasma EDTA, the serum also allows simultaneous measurements of other parameters used for the care of the dialysed patients.

Published
2007

33. Spatial and Temporal Segregation of Wild and Hatchery Winter Steelhead Populations in Eagle Creek, Oregon.

Author

Brignon, William R.

Subjects
FISH populations, STEELHEAD trout, HATCHERY fishes, FISH conservation, FISH spawning
Abstract

A segregated hatchery program promotes conservation by limiting the amount of overlap in return timing and spawning locations of hatchery- and natural-origin fish. The objective of the present study was to use radiotelemetry data collected from 2005 to 2007 to better understand the level of spatial and temporal segregation between hatchery and natural-origin steelheadOncorhynchus mykissin the Eagle Creek basin, Oregon. The analysis resulted in three key findings. First, hatchery-origin winter steelhead were unlikely to migrate into the North Fork Eagle Creek, a tributary that has historically lacked any hatchery releases or influence, suggesting a high level of segregation from the natural-origin population returning to that stream. Second, hatchery fish arrived at the lower fish ladder on Eagle Creek and at Eagle Creek National Fish Hatchery (NFH) earlier than natural-origin fish, suggesting that broodstock management practices to maintain an early returning hatchery stock (i.e., temporal segregation) have been somewhat successful. Finally, regardless of the differential arrival timing to Eagle Creek NFH, there is evidence of an increased probability of spatial and temporal overlap of the populations as the return progresses, and this may be explained by successful reproduction of hatchery-origin fish in main-stem Eagle Creek. Integrated and segregated hatchery programs should be monitored periodically to ensure that they are meeting their stated goals. Received October 12, 2016; accepted March 14, 2017 Published online May 4, 2017 [ABSTRACT FROM AUTHOR]

Published
2017
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35. Towards coherent combination of 61 fiber amplifiers

Author

Hartl, Ingmar, Carter, Adrian L., Heilmann, Anke, Le Dortz, Jérémy, Daniault, Louis, Fsaifes, Ihsan, Bellanger, Séverine, Antier, Marie, Bourderionnet, Jérôme, Larat, Christian, Lallier, Eric, Durand, Eric, Brignon, Arnaud, Simon-Boisson, Christophe, and Chanteloup, Jean-Christophe

Published
2018
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37. Experience regarding Reduction of Peritonitis Rates in Continuous Ambulatory Peritoneal Dialysis

Author

Sandrine Genestier, Bernadette Faller, P. Brignon, Olivier Bodenreider, and Genevieve Boess

Subjects
medicine.medical_specialty, Dialysis fluid, business.industry, medicine.medical_treatment, Continuous ambulatory peritoneal dialysis, Peritonitis, General Medicine, medicine.disease, Peritoneal dialysis, Catheter, Peritoneal Dialysis, Continuous Ambulatory, Nephrology, Dialysis Solutions, Emergency medicine, Ambulatory, medicine, Humans, Dialisis peritoneal, Complication, business, Intensive care medicine
Published
1993
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38. La combinaison cohérente de fibres amplificatrices

Author

Antier, Marie, Le Dortz, Jérémy, Bourderionnet, Jérôme, Lallier, Éric, Larat, Christian, Brignon, Arnaud, Antier, Marie, Le Dortz, Jérémy, Bourderionnet, Jérôme, Lallier, Éric, Larat, Christian, and Brignon, Arnaud

Abstract

Les propriétés intrinsèques des fibres amplificatrices en font des candidates idéales pour le développement de sources lasers de haute puissance. Ces sources trouvent de nombreuses applications dans des domaines aussi variés que l’industrie, la défense et la physique des particules. Dans ce dernier cas, des sources ultra-brèves et ultra-intenses permettent d’envisager l’accélération de protons pour la proton-thérapie ou encore le remplacement des synchrotrons actuels par des architectures ayant un rendement plus important et une meilleure compacité. Cependant, du fait du confinement de la lumière au coeur de la fibre, la puissance crête obtenue à partir d’une seule fibre amplificatrice reste limitée. La combinaison cohérente de plusieurs fibres amplificatrices en parallèle permet de s’affranchir de cette limitation.

Published
2015
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39. [Calcium oxalate lithiasis. Relationship between biochemical risk factors and crystalline phase of the stone]

Author

X, Parent, G, Boess, and P, Brignon

Subjects
Male, Calcium Oxalate, Risk Factors, Humans, Female, Urinary Calculi, Middle Aged, Crystallization
Abstract

To identify biochemical risk factors specific to each crystalline phase of calcium oxalate (calcium oxalate monohydrate and calcium oxalate dihydrate) in order to allow more specific medical management of calcium oxalate stones and better prevention of recurrences.The authors compared the urine biochemistry (morning and 24-hour) of 19 patients with stones containing more than 95% of calcium oxalate monohydrate with those of 16 patients with stones containing more than 60% of calcium oxalate dihydrate (calcium phosphate12%).Urinary calcium, expressed as excretion rate and as concentration, and the calcium/citrate ratio were significantly higher in the calcium oxalate dihydrate group than in the calcium oxalate monohydrate group: (9.2 +/- 3.8 mmol/24 h versus 4.4 +/- 1.7 mmol/24 h); (4.9 +/- 2.1 mmol/l versus 2.4 +/- 1.1 mmol/l); (3.3 +/- 1.6 versus 1.6 +/- 0.7). The mean pH of the morning urine was lower in the calcium oxalate monohydrate group, just below the cut-off value of 5.5.There is a strong correlation between predominantly calcium oxalate dihydrate stones and hypercalciuria or calcium/citrate ratio3. The close relationship between urine biochemistry and crystalline phases of calcium oxalate confirms the clinical value of morphoconstitutional analysis of urinary stones. Identification of risk factors, based on stone analysis, allows more specific medical management of the stones and, in the longer term, better prevention of recurrences.

Published
2000

40. A family of laboratory strains of Saccharomyces cerevisiae carry rearrangements involving chromosomes I and III

Author

S, Casaregola, H V, Nguyen, A, Lepingle, P, Brignon, F, Gendre, and C, Gaillardin

Subjects
Polymorphism, Genetic, Base Sequence, Species Specificity, Karyotyping, Molecular Sequence Data, Saccharomyces cerevisiae, Sequence Analysis, DNA, Chromosomes, Fungal, DNA, Fungal, Polymerase Chain Reaction, Crosses, Genetic, Translocation, Genetic, Electrophoresis, Gel, Pulsed-Field
Abstract

In order to study meiotic segregation of chromosome length polymorphism in yeast, we analysed the progeny of a cross involving two laboratory strains FL100trp and YNN295. Analysis of the parental strains led us to detect an important length polymorphism of chromosomes I and III in FL100trp. A reciprocal translocation involving 80 kb of the left arm of chromosome III and 45 kb of the right arm of chromosome I was shown to be the cause for the observed polymorphism in this strain. The characterization of the translocation breakpoints revealed the existence of a transposition hot-spot on chromosome I: the sequence of the translocation joints on chromosomes I and III suggests that the mechanism very likely involved homologous recombination between Ty2 transposable elements on each chromosome. Analysis of FL100, FL200 and FL100trp ura, which are related to FL100trp, shows that this reciprocal translocation is present in some of the strains of the FL series, whereas the parental strain FL100 does not carry the same rearrangement. We evidenced instead the duplication of 80 kb of chromosome III on chromosome I and a deletion of 45 kb of the right arm of chromosome I in this strain, indicating that secondary events might have taken place and that the strain currently named FL100 is not the common ancestor of the FL series.

Published
1998

41. [Long term continuous ambulatory peritoneal dialysis: results and limits]

Author

B, Faller, S, Genestier, P, Brignon, and B, Boess

Subjects
Adult, Survival Rate, Time Factors, Treatment Outcome, Peritoneal Dialysis, Continuous Ambulatory, Dialysis Solutions, Humans, Ultrafiltration, Middle Aged, Peritoneal Diseases, Peritoneal Dialysis, Aged, Retrospective Studies
Abstract

Retrospective studies of CAPD show a 50% patient survival at 5 years. There are actually three long term technique limits: UF failure: The diagnosis is made clinically and by peritoneal permeability tests. The use of new osmotic agents should improve this problem. Inadequate dialysis seems more related to the low dialysate flow rather than to the peritoneal membrane. The increase of dialysate volumes or the switch to Automated PD leads to better clearances. The peritoneal membrane lesions are generated by the use of an aggressive dialysate. In order to protect the membrane, new biocompatible solutions are under evaluation.

Published
1995

42. Méthode d’analyse d’une situation éthique pluridisciplinaire en santé : une recherche-action pour une culture commune en établissements de formation et de soins

Author

Brignon, Béatrice, Dollet, Denise, Saglietto, Christine, Wybo, Muriel, Mechard, Marie-Christine, Junker, Véronique, Koller, Sylviane, Barraya, Denise, Monthean, Martine, Boniffacy, Nadia, Bridi, Lila, and Laot, Michel

Abstract

L’apprentissage de l’éthique est au cœur de toute formation sanitaire. Pour favoriser la compréhension par l’étudiant de l’importance de la réflexion collective au bénéfice des usagers, les systèmes de l’alternance se sont rapprochés au sein d’une recherche-action (Kaddouri, 2009). Réunissant des membres d’instituts de formation et de soins, cette recherche avait pour finalité l’élaboration d’une méthode commune d’analyse d’une situation éthique. À partir de l’étude de démarches existantes, un outil synthétique et aisé dans son utilisation a été créé, puis testé auprès de professionnels et d’étudiants. Ayant été réajusté et validé par le Conseil pédagogique du département d’éthique et sciences humaines de la faculté de médecine de Nice, le modèle d’analyse pourra être diffusé dans l’ensemble des établissements concernés, qu’ils soient de formation ou de soins, en concertation avec les directions des différentes instances. L’apprentissage des étudiants dans l’analyse éthique pourra ensuite être étudié.

Published
2017
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43. Highly scalable femtosecond coherent beam combining demonstrated with 19 fibers

Author

Le Dortz, J., Heilmann, A., Antier, M., Bourderionnet, J., Larat, C., Fsaifes, I., Daniault, L., Bellanger, S., Simon Boisson, C., Chanteloup, J.-C., Lallier, E., and Brignon, A.

Abstract

Coherent beam combining in the femtosecond regime of a record number of 19 fibers is demonstrated. The interferometric phase measurement technique, particularly well suited to phase-lock a very large number of fibers, is successfully demonstrated in the femtosecond regime. A servo loop is implemented to control piezoelectric fiber stretchers for both phase and delay variation compensation. The residual phase errors are below λ/60  rms. Nearly 50% of the total energy is contained in the far-field central lobe. After compression, we obtain a combined pulse width of 300 fs identical to the master oscillator pulse width.

Published
2017

44. Mid-infrared laser beam steering based on Fourier transform OPO

Author

Bourderionnet, Jérôme, Brignon, Arnaud, Dolfi, Daniel, and Huignard, Jean-Pierre

Abstract

Inertia-less optical scanners are an essential building block for many systems, including remote sensing, spectroscopy, and optronics. Although many solutions provide efficient scanning devices in the visible to near-infrared spectral range today, none of these devices offers good performances in longer wavelengths like in the mid-IR range. The new rationale that is described in this paper is to take advantage of existing and well-proven steering techniques in the near IR and to reach mid-IR by frequency conversion in a specifically designed Fourier transform optical parametric oscillator.

Published
2017
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45. Pharmacokinetics of cadralazine and its hydrazino-metabolite in patients with renal impairment after repeated administration of 5 mg once daily

Author

J. Ménard, Patrick Brunel, Marichal Jf, JB Lecaillon, P. Brignon, B. Faller, and Godbillon J

Subjects
Drug, Adult, Male, medicine.medical_specialty, Clinical chemistry, media_common.quotation_subject, Metabolite, Vasodilator Agents, Renal function, Administration, Oral, Blood Pressure, Urine, Drug Administration Schedule, chemistry.chemical_compound, Pharmacokinetics, Oral administration, Heart Rate, Internal medicine, Medicine, Humans, Pharmacology (medical), Cadralazine, Antihypertensive Agents, media_common, Aged, Pharmacology, business.industry, Middle Aged, Pyridazines, Endocrinology, chemistry, Hypertension, Female, Kidney Diseases, sense organs, business, medicine.drug
Abstract

Since the hydrazino-pyridazine metabolite of cadralazine, CGP 22 639 is believed to contribute to the activity of the drug, its pharmacokinetics and that of cadralazine were investigated in 8 hypertensive patients with renal impairment. The creatinine clearance (CLcr) of patients ranged from 10 to 60 ml/min. The concentrations of cadralazine in plasma and urine, and of CGP 22 639 (plus its possible hydrazones) in plasma were measured after single and repeated administration of 5 mg of cadralazine once daily. A hypotension possibly linked to cadralazine treatment was recorded on day 3 for the patient with CLcr = 10 ml/min. Metabolite concentrations were found to be at least twice as high as in other patients indicating that in this patient, the daily dose of 5 mg was probably too high. The pharmacokinetics of cadralazine were not modified by repeated administration. The drug and its metabolite were eliminated more slowly in patients with low creatinine clearance. The t1/2 of CGP 22 639 was about twice the t1/2 of the unchanged drug. In patients whose CLcr ranged from 19-37 ml/min the mean accumulation factor of apparent CGP 22 639 was 1.7 times that of the unchanged drug. It shows that the apparent CGP 22 639 accumulated more than the unchanged drug. A starting daily dose of 2.5 mg of cadralazine in patients with CLcr40 ml/min appears to be suited to take into account the pharmacokinetics of CGP 22 639. This dose can be increased by 2.5 mg steps if the antihypertensive effect is not sufficient (maximum dose with CLcr40 ml/min: 10 mg).(ABSTRACT TRUNCATED AT 250 WORDS)

Published
1992

46. APPORTS ET LIMITES DE LA CLINIQUE DE L'ACTIVITÉ AU DÉVELOPPEMENT DE L'IDENTITÉ PROFESSIONNELLE DES ÉTUDIANTS INFIRMIERS.

Author

BRIGNON, BÉATRICE and RAVESTEIN, JEAN

Abstract

Copyright of Travail Humain is the property of Presses Universitaires de France and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2015
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47. Moving towards ambitious climate policies: Monetised health benefits from improved air quality could offset mitigation costs in Europe.

Author

Schucht, Simone, Colette, Augustin, Rao, Shilpa, Holland, Mike, Schöpp, Wolfgang, Kolp, Peter, Klimont, Zbigniew, Bessagnet, Bertrand, Szopa, Sophie, Vautard, Robert, Brignon, Jean-Marc, and Rouïl, Laurence

Subjects
CLIMATE change, ENVIRONMENTAL policy, HEALTH impact assessment, AIR quality, COST analysis
Abstract

Air quality and related health effects are not only affected by policies directly addressed at air pollution but also by other environmental strategies such as climate mitigation. This study addresses how different climate policy pathways indirectly bear upon air pollution in terms of improved human health in Europe. To this end, we put in perspective mitigation costs and monetised health benefits of reducing PM 2.5 (particles less than 2.5 μm in diameter) and ozone concentrations. Air quality in Europe and related health impacts were assessed using a comprehensive modelling chain, based on global and regional climate and chemistry-transport models together with a health impact assessment tool. This allows capturing both the impact of climate policy on emissions of air pollutants and the geophysical impact of climate change on air quality. Results are presented for projections at the 2050 horizon, for a set of consistent air pollution and climate policy scenarios, combined with population data from the UN's World Population Prospects, and are expressed in terms of morbidity and mortality impacts of PM 2.5 and ozone pollution and their monetised damage equivalent. The analysis shows that enforcement of current European air quality policies would effectively reduce health impacts from PM 2.5 in Europe even in the absence of climate policies (life years lost from the exposure to PM 2.5 decrease by 78% between 2005 and 2050 in the reference scenario), while impacts for ozone depend on the ambition level of international climate policies. A move towards stringent climate policies on a global scale, in addition to limiting global warming, creates co-benefits in terms of reduced health impacts (68% decrease in life years lost from the exposure to PM 2.5 and 85% decrease in premature deaths from ozone in 2050 in the mitigation scenario relative to the reference scenario) and air pollution cost savings (77%) in Europe. These co-benefits are found to offset at least 85% of the additional cost of climate policy in this region. [ABSTRACT FROM AUTHOR]

Published
2015
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48. [Treatment of chronic renal insufficiency: hemodialysis at a center or continuous ambulatory peritoneal dialysis? Comparative retrospective study of the success of both methods]

Author

J F, Marichal, B, Faller, P, Brignon, B, Cordier, and G, Hedelin

Subjects
Adult, Aged, 80 and over, Male, Adolescent, Middle Aged, Kidney Transplantation, Peritoneal Dialysis, Continuous Ambulatory, Renal Dialysis, Risk Factors, Humans, Kidney Failure, Chronic, Female, Aged, Retrospective Studies
Abstract

In a retrospective study, the authors analyse the dialysis-technique success rate in 276 chronic renal patients. 137 patients have been treated with in-center Hemodialysis (CHD) since 1972, 139 patients with Continuous Ambulatory Peritoneal Dialysis (CAPD) since 1978. The 6-year technic success rate reaches 28% in CAPD and 31% in CHD (not statistically significant). The risk factors influence the technic-success rate of both methods in the same way. The results suggest that in the analysed patients CAPD is at least as effective as CHD at maintenance in the technic.

Published
1991

49. [Influence of experience on the success of the treatment of chronic kidney failure by continuous ambulatory peritoneal dialysis compared with hemodialysis at a center]

Author

J F, Marichal, B, Cordier, G, Hedelin, B, Faller, and P, Brignon

Subjects
Adult, Aged, 80 and over, Male, Adolescent, Peritoneal Dialysis, Continuous Ambulatory, Renal Dialysis, Humans, Kidney Failure, Chronic, Female, Middle Aged, Aged, Retrospective Studies
Abstract

Experience influence on treatment success of renal chronic failure by continuous ambulatory peritoneal dialysis comparatively to hemodialysis in center is estimated by the probability variation of still being in dialysis techniques. The retrospective study was realized in 276 dialysed patients who were taken over from 1972 to April 1989. In this population, there isn't any significant difference between the probability to stay in ambulatory peritoneal dialysis or in hemodialysis in center. But, if the study is realizing from the 4 years which followed the technique introduction in the center, the success probability at 30 months, remains the same for hemodialysis in center whether the technique has began in 1972 or 1976, whereas for continuous ambulatory peritoneal dialysis, this probability raises from 52% to 72% if it begins after 1982. Ambulatory peritoneal dialysis treated patients would be maintained more longer in their system than hemodialysis patients. Those results are explaining by prevention of the peritonitis thanks to technological progress and the early prevention of possible complications.

Published
1990

50. [Daily hemodialysis of ultra-short duration with non-traumatic vascular access. Two cases]

Author

J F, Marichal, P, Brignon, and B, Faller

Subjects
Time Factors, Renal Dialysis, Humans, Kidney Failure, Chronic, Middle Aged, Aged
Abstract

The authors report their experience on treating two patients, suffering end-stage renal disease, by daily hemodialysis of ultra-short duration with a non-traumatic vascular access. 90 minutes dialysis are realized 6 days a week. Clinical tolerance is excellent and patients' adhesion is satisfactory. However, despite reutilization of the dialyzer, the method remains costly.

Published
1990

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