43 results on '"Francois Maurice"'
Search Results
2. NEW RESULTS ON THERMOACOUSTIC REFRIGERATION WITH GAS SUBSTANCE
- Author
-
Lubiez, Jean Valentin, primary, Jerbi, Fathi Jebali, additional, and Francois, Maurice-Xavier, additional
- Published
- 2023
- Full Text
- View/download PDF
3. Some Efficient Solutions to Recover Low and Medium Waste Heat: Competitiveness of the Thermoacoustic Technology
- Author
-
Haddad, Cynthia, Périlhon, Christelle, Danlos, Amélie, François, Maurice-Xavier, and Descombes, Georges
- Published
- 2014
- Full Text
- View/download PDF
4. Low incidence of SARS-CoV-2, risk factors of mortality and the course of illness in the French national cohort of dialysis patients
- Author
-
Cécile Couchoud, Florian Bayer, Carole Ayav, Clémence Béchade, Philippe Brunet, François Chantrel, Luc Frimat, Roula Galland, Maryvonne Hourmant, Emmanuelle Laurain, Thierry Lobbedez, Lucile Mercadal, Olivier Moranne, Abdelhamid Abbassi, Alain Debure, Abdallah Guerraoui, Abdelatif Benmoussa, Abdelaziz Hamani, Abdelaziz Ziane, Abdelhamid Nefti, Abdelkader Hadj, Abderrahim El Amari, Abderrahmane Ghazali, Abo Bakr Abd El Fatah Mohamed, Achour Laradi, Adel Ben Ahmed, Adel Sahar, Adele Pillet, Adeline Lacraz, Adnan Moinat, Afshin Massoumi, Agathe Pardon, Agnes Caillette Beaudoin, Agnes Chapelet Debout, Agnes Mariot, Ahmed Rachi, Aida Afiani, Aime Remy Boula, Al Jalaby, Alain Cremault, Alain Fournier, Alain Jeanson, Alain Lyon, Alain Nony, Alain Robert, Alain Slingeneyer, Alanor Agnes Labatide, Albane Brodin Sartorius, Albert Bensman, Albert Fournier, Alex Ranlin, Alex Vido Sandor, Alexandra Colombo, Alexandra Duhem, Alexandra Stancu, Alexandre Dufay, Alexandre Dumoulin, Alexandre Ebel, Alexandre Klein, Alexandre Martin, Alexandre Mouneimne, Alexandre Seidowsky, Alfio De Martin, Alfredo Zannier, Ali Aizel, Ali Hafi, Ali Zineddine Diddaoui, Alim Heyani, Alina Mocanu, Alina Preda, Aline Hafi, Aline Talaszka, Alyette Duquesne, Amar Amaouche, Amel Ghemmour, Amelie Simon, Amina Skalli, Amine Boukadida, Amr Ekhlas Ragab Eid, Ana Fedorca, Anabelle Baillet, Anais Poyet, Ancuta Bouffandeau Giorgita, Anderson Ratsimbazafy, Andre Pruna, Angel Argiles, Angelo Testa, Ann Karolien Vandooren, Anne Jolivot, Anne Kolko Labadens, Anne Lataste, Anne Maisin, Anne Paris, Anne Sechet, Anne Wuillai, Anne Elisabeth Heng, Anne Gaelle Josse, Anne Helene Querard, Anne Helene Reboux, Anne Laure Adra, Anne Laure Faller, Anne Laure Leclerc, Anne Laure Poitou, Annie Lahoche Manucci, Antoine Jacquet, Antoine Pommereau, Antoine Thierry, Arezki Adem, Arielle Chapelet, Arnaud Del Bello, Arnaud Delezire, Arnaud Garnier, Arnaud Guerard, Arnaud Klisnick, Arnaud Lionet, Arnaud Roccabianca, Arnaud Stolz, Arthur Capdeville, Asma Allal, Assem Alrifai, Assetou Diarrassouba, Assia Djema, Assia Ferhat Carre, Astrid Godron Dubrasquet, Atman Haddj Elmrabet, Audrey Jegado, Aurelia Bertholet Thomas, Aurelie Davourie Salandre, Aurelie Pajot, Aurelien Lorthioir, Aurelien Tiple, Aurore Sury, Ayman Abokasem, Ayman Sarraj, Bachir Henaoui, Baher Chaghouri, Bassem Wehbe, Beatrice Ball, Beatrice Viron, Belkassem Issad, Benedicte Hodemon Corne, Benedicte Janbon, Benjamin Deroure, Benjamin Savenkoff, Benoit Jonon, Benoit Vendrely, Benyakoub Djelaleddine, Bernard Ohry, Bernard Painchart, Bernard Strullu, Bernard Temperville, Bertin Ebikili, Bertrand Hacq, Bertrand Morel, Bilal Aoun, Blanca Muniz, Bouchra Chlih, Brahim Amara, Brice Mayor, Brigitte Gilson, Brigitte Llanas, Brigitte Zins, Bruno Bourgeon, Bruno Coevoet, Bruno Guery, Bruno Legallicier, Bruno Paris, Bruno Ranchin, Bruno Seigneuric, Camelia Ghiciuc Dita, Camelia Prelipcean, Carine Achard Hottelart, Carine Diet, Carlos Frangie, Carlos Vela, Carmina Muresan, Carole Deprele, Caroline Araujo, Caroline Bidault, Caroline Creput, Caroline Delclaux, Caroline Du Halgouet, Caroline Favennec, Caroline Freguin, Caroline Gourraud Vercel, Caroline Mesguen, Caroline Ndomo Obama, Caroline Poitou, Caroline Preissig Dirhold, Caroline Roubiou, Catherine Albert, Catherine Bessin, Catherine De Marion Gaja, Catherine Godart, Catherine Lasseur, Catherine Leocardi, Catherine Lumbroso, Catherine Melander, Catherine Michel, Catherine Quere Maurouard, Catherine Rouannet, Catherine Taddei, Cathy Verove, Cecile Guiraud, Cecile Tafelin, Cecile Turc Baron, Cedric Formet, Cedric Pinier, Celia Lessore De Ste Foy, Celine Granolleras, Chaouki Bennini, Charles Cartou, Charles Chazot, Charlotte Jouzel, Cherif Badid, Christa Roubicek, Christel Viaud, Christelle Verrier, Christian Chuet, Christian Combe, Christian Dabot, Christian Duvic, Christian Emond, Christian Lagarde, Christian Lamotte, Christian Pain, Christiane Mousson, Christie Lorriaux, Christine Beauchamp, Christine Fumeron, Christine Le Gurun, Christine Leroy, Christine Pietrement, Christine Richer, Christophe Bouaka, Christophe Charasse, Christophe Goupy, Christophe Ridel, Cindy Castrale, Cindy Detourne, Clair Francois, Claire Presne, Claire Trivin, Clarissa Von Kotze, Claude Bernard, Claude Bonniol, Claude Desvergnes, Claude Raharivelina, Claudia Nistor, Claudine Gueret, Claudine Lloret, Claudine Saltiel, Clelia Rosati, Clementine Rabate, Corina Stanescu, Corinne Ferrandini, Corinne Guibergia, Corinne Lemoine, Corinne Passeron, Cynthia Kahil, Cyril Garrouste, Cyril Vo Van, Cyrille Jolimoy, Dalila Kesraoui, Damien Jolly, Damien Thibaudin, Dan Teboulle, Daniel Daubresse, Daniel Louvet, Daniel Rasamimanantsoa, Daniel Toledano, Daniela Babici, Daniela David, Daniela Dincu, Danielle Bruno, Delia May, Delphine Haussaire, Delphine Henriet Viprey, Denis Bugnon, Denis Fouque, Denis Morin, Derradji Nour, Diab Mohamed Mahmoud, Diana Istrati Cristescu, Didier Aguilera, Didier Coste, Didier Hamel, Didier Le Chapois, Didier Testou, Dilaver Erbilgin, Djamal Dahmane, Doan Bui Quang, Dominique 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, Donatien Ikonga, Dorina Visanica, Dorothee Bazin, Edouard Boury, Edouard Maksour, Ekoue Agbonon, Elarbi Harrami, Elena Marcu, Elena Tudorache, Elisabeth Caniot, Elisabeth Semjen, Elisabeth Tomkiewicz, Elise Scheidt, Elke Gaboriau, Elodie Lamouroux, Elsa Guiard, Elsa Martin Passos, Emerson Nsembani, Emilie Fache, Emilie Kalbacher, Emilie Pambrun, Emilie Pincon, Emma Allain Launay, Emmanuel Baron, Emmanuel Dupuis, Emmanuel Villar, Emmanuelle Charlin, Emmanuelle Hecquet, Emmanuelle Kohler, Emmanuelle Rosier, Enrique Figueroa, Eric Azoulay, Eric Canivet, Eric Daugas, Eric Gauthier, Eric Laruelle, Eric Le Guen, Eric Legrand, Eric Moumas, Eric Postec, Eric Prinz, Eric Renaudineau, Estelle Desport, Estelle Ricard Sutra, Etienne Berard, Etienne Ged, Etienne Robin, Eve Vilaine, Evelyne Bargas, Evelyne Mac Namara, François Combarnous, Fatima Yazbeck, Fabien Gerard, Fabien Metivier, Fabien Parazols, Fabien Soulis, Fabrice Garnier, Fadhila Pech Messaoudene, Fadi Haidar, Fanny Boullenger, Fanny Lepeytre, Fanny Leroy, Fares Frejate, Farid Bellahsene, Farid Bellhasene, Farid Saidani, Fatouma Toure, Faycal Kriaa, Fazia Nemmar, Fernando Vetromile, Florence Chalmin, Florence Lucats, Florence Sens, Florence Villemain, Florent Plasse, Fouad Lebhour, Francis Schillinger, Franck Berge, Franck Bourdon, Franck Bridoux, Franck Reynaud, Francois 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 Roux Amani, Francoise Broux, Francoise Bulte, Francoise Heibel, Francoise Leonetti, Francoise Moussion Schott, Frank Le Roy, Frederic Besson, Frederic Lavainne, Frederic Tollis, Frederique Bocquentin, Frederique Meeus, Frederique Vecina, Friederike Von Ey, Gabriel Balit, Gabriel Choukroun, Gabriel Gruget, Gabriel Huchard, Gabriella Golea, Gabrielle Duneau, Gaelle Lefrancois, Gaelle Pelle, Gaetan Lebrun, Genevieve Dumont, Georges Brillet, Georges Deschenes, Georges Mourad, Georges Stamatakis, Geraldine Cazajous, Geraldine D'ythurbide, Geraldine Robitaille Wiart, Gerard Cardon, Gerard Champion, Gerard Deschodt, Gerard Mangenot, Gerard Motte, Gerard Schortgen, Ghada Boulahia, Ghassan Maakaroun, Ghylene Bourdat Michel, Gilbert Zanetta, Gilles Hufnagel, Gilles Messier, Giorgina Piccoli, Gregoire Couvrat Desvergnes, Guillaume Bobrie, Guillaume Bonnard, Guillaume Clement, Guillaume Jean, Guillaume Queffeulou, Guillaume Seret, Guillaume Vernin, Guy Delavaud, Guy Lambrey, Guy Rostoker, Gwenaelle Poussard, Gwenaelle Roussey Kesler, H. Leon, Habib Aboubekr, Hacene Boulechfar, Hacene Sekhri, Hadia Hebibi, Hadjira Benalia, Hafed Fessi, Hafsabhai Atchia, Haiat Bittar, Hakim Maiza, Hakim Mazouz, Hamid El Ali, Hammouche Bougrida, Hans Van Der Pijl, Hassan Lokmane, Hassane Izzedine, Hassen Adda, Helene De Preneuf, Helene Leray, Helene Philippot, Henri Boulanger, Henri Merault, Henri Renaud, Herve Bonarek, Herve Maheut, Hilaire Nzeyimana, Hocine Mehama, Hocine Zaidi, Hugo Weclawiak, Hugues Flodrops, Huseyin Karaaslan, Ibrahim Haskour, Ihssen Belhadj, Imad Almoubarak, Imad Haddad, Ines Castellano, Ines Ferrandiz, Ioana Daniliuc, Ioana Darie, Ioana Enache, Ionut Prunescu, Irenee Djiconkpode, Irina Shahapuni, Isabelle Bouchoule, Isabelle Devriendt, Isabelle Kazes, Isabelle Kolb, Isabelle Landru, Isabelle Poli, Isabelle Rey, Isabelle Segalen, Isabelle Selcer, Isabelle Vernier, Isabelle Vrillon, Ismahane Guenifi, J. Dominique Gheerbrandt, Jacky Potier, Jacques Becart, Jacques Cledes, Jacques Ducros, Jacques Duvic, Jacques Fourcade, Jacques Gaultier, Jacques Jurine, Jacques Lebleu, Jacques Ollier, Jacques Ibsen Charles, Jamal Yazji, Janette Mansour, Jean Arnautou, Jean Brocard, Jean Carolfi, Jean Montoriol, Jean Baptiste Gouin, Jean Bernard Palcoux, Jean Christophe Bendini, Jean Claude Aldigier, Jean Claude Alphonse, Jean Daniel Delbet, Jean Francois Bonne, Jean Francois Cantin, Jean Francois De Fremont, Jean Francois Dessassis, Jean Francois Subra, Jean Francois Valentin, Jean Francois Verdier, Jean Jacques Dion, Jean Jacques Haultier, Jean Jacques Montseny, Jean Louis Bacri, Jean Louis Bouchet, Jean Luc Mahe, Jean Marc Chalopin, Jean Marc Gabriel, Jean Marc Hurot, Jean Marc Lanau, Jean Marie Batho, Jean Marie Coulibaly, Jean Michel Hardin, Jean Michel Marc, Jean Michel Poux, Jean Michel Rebibou, Jean Michel Tivollier, Jean Noel Ottavioli, Jean Paul Faucon, Jean Paul Imiela, Jean Paul Jaulin, Jean Paul Masselot, Jean Paul Ortiz, Jean Philippe Bourdenx, Jean Philippe Devaux, Jean Philippe Hammelin, Jean Pierre Rivory, Jean Pierre Wauquier, Jean Rene Larue, Jean Rene Mondain, Jean Sebastien Borde, Jean Simon Virot, Jean Yves Bosc, Jedjiga Achiche, Jennifer Parasote, Jeremie Diolez, Jerome Harambat, Jerome Potier, Jerome Sampol, Jihad Mustel, Jean Jacques Lefevre, Jocelyne Maurizi, Joel Gamberoni, Joelle Claudeon, Joelle Terzic, Joffrey Rogol, Johnny Sayegh, Jorge Cardozo, Jose Brasseur, Jose Guiserix, Joseph Barsumau, Julie Albaret, Julie Beaume, Julie Sohier Attias, Julien Dehay, Julien Hogan, Julien Journet, Julien Ott, Juliette Baleynaud, Justine Bacchetta, Justine Faucher, Kamel Yousfi, Karim Dardim, Karine Clabault, Karine Moreau, Kedna Thomas, Khaled Sirajedine, Khalil Chedid, Khalil El Kaeoui, Khalil El Karoui, Khedidja Bouachi, Kheira Hue, Khuzama El Nasser, Kodso Akposso, Kristian Kunz, Krzysztof Bijak, Lilia Kihal, L. Rasoloarijaona, Laid Harbouche, Larbi Bencheikh, Larbie Lamriben, Latifa Hanafi, Laura Braun Parvez, Laure Champion, Laure Croze, Laure Eprinchard, Laure Patrier, Laurence Nicolet, Laurence Vrigneaud, Laurent Duflot, Leandre Mackaya, Leila Chenine, Leon Odry, Lili Taghipour Tamiji, Lilia Antri Bouzar, Liliane Ngango Nga Messi, Lionel Le Mouellic, Lise Mandart, Lise Weis, Lise Marie Pouteau, Lora Georgieva, Lorita Vitanova, Lotfi Chalabi, Luc Delvallez, Luc Fromentin, Luc Marty, Luc Monjot, Luciana Spataru, Lucie Bessenay, Lucie Boissinot, Lucie Wajsbrot, Lucien Rakoff, Ludivine Lebourg, Lydie Perez, Lyliane Lafage, Lynda Azzouz, Madeleine Dumoulin, Messaoud Ouziala, Maan Joseph, Mabrouk Brahimi, Maeva Wong Fat, Magalie Fort, Magued Nakhla, Mahdi Abtahi, Mahen Albadawy, Mahmoud Alouach, Mahmoud Mezghani, Maite Daroux, Maklouf Boukelmoune, Malek Dhib, Malik Touam, Malina Dubau, Mamadou Balde, Man Nguyen Khoa, Manfred Ismer, Manolie Mehdi, Manon Laforet, Marc Bouiller, Marc Eugene, Marc Fila, Marc Hazzan, Marc Kribs, Marc Ladriere, Marc Lebot, Marc Padilla, Marc Souid, Marcel Marraoui, Maren Burbach, Maria Manescu, Maria Eugenia Noguera Gonzalez, Mariana Revenco, Marianne Terrasse, Marie Essi, Marie Alice Macher, Marie Beatrice Nogier, Marie Cecile Cazin, Marie Christine Schweitzer Camoin, Marie Christine Thouret, Marie Claude Hannaert, Marie France Servel, Marie Helene Chabannier, Marie Jeanne Coudert Krier, Marie Noelle Catoliquot, Marie Paule Guillodo, Marie Sophie Gavard, Marie Xaviere Vairon Codaccioni, Marina Rabec, Marine Freist, Marion Gauthier, Marion Lemaire, Marion Mehrenberger, Marion Venot, Marios Pongas, Marlene Beaubrun Diant, Martial Levannier, Martine Bertaux, Mathieu Jablonski, Mathieu Sacquepee, Mathilde Dargelos, Mathilde Lemoine, Mathilde Tamain, Matthieu Monge, Matthieu Reberolle, Maud Cousin, Maud Francois, Maurice Baron, Maxime Hoffmann, Maxime Ingwiller, Maxime Touzot, Mederick Mohajer, Mehadji Maaz, Melanie Hanoy, Melanie Marroc, Melodie Cuny, Menno Van Der Straaten, Mf. Serveaux, Michel Basteri, Michel Fen Chong, Michel Hecht, Michel Massad, Michel Normand, Michel Olmer, Michel Tolani, Michel Tsimaratos, Michele Hemery, Michele Kessler, Miguel Esposito, Milad Shenouda, Mimi Kareche, Mina Khalili, Mirella Diaconita, Mohamad Khair Rifard, Mohamed Aladib, Mohamed Belmouaz, Mohamed Brahim, Mohamed Diouani, Mohamed Fodil Cherif, Mohamed Jamali, Mohamed Maghlaoua, Mohamed Meddeb, Mohamed Ramdane, Mohamed Rifaat, Mohamed Sharifull Islam, Mohamed Adnan Abbade, Mokhtar Amrandi, Mokhtar Chawki, Monica Ciobotaru, Monica Indrieis, Monique Chanas, Monique Hoarau, Monzer Tomeh, Moufida Bellou, Mouloud Bouzernidj, Mounia Ammor, Mounir Guergour, Mountassir Benzakour, Mourad Hachicha, Moussa Coulibaly, Mustafa Smati, Mustapha Al Morabiti, Mustapha Amirou, Myriam Isnard, Myriam Pastural, Myriam Pujo, Nourredine Boumendjel, Nabil Majbri, Nabila Goumri, Nadege Mingat, Nader Bassilios, Nadia Kerkeni, Nadia Sedrati, Nadia Soltani, Nadine Maroun, Nadine Neyrat, Nahn Luang, Najeh El Esper, Naji Ammar, Nasredine Ghali, Nasser Hamdini, Natacha Noel, Natacha Potelune, Nathalie Maisonneuve, Nathalie Pertuiset, Nathalie Raynal, Nathalie Vittoz, Nazim Terki, Nelly Castin, Nestor Nankeu, Nicolas Bouvier, Nicolas Keller, Nicolas Legros, Nicolas Peters, Nicolas Quirin, Nicole Lefrancois, Nicole Monnier, Nicole Rance, Niels Bruckmann, Noel Mertens, Nolwenn Lorcy, Olivia Gilbert, Olivier Coldefy, Olivier Drouineau, Olivier Dunand, Olivier Fritz, Olivier Imhoff, Olivier Kourilsky, Olivier Lavelle, Olivier Papin, Olivier Roques, Ophelie Le Maner, Oussamah Fikri Benbrahim, Pablo Antonio Erina Torres, Pablo Antonio Urena Torres, Paolo Malvezzi, Pascal Bindi, Pascal Cluzel, Pascal Fontanier, Pascal Wheatley, Pascale Depraetre, Pascale Dubosq, Pascale Halin, Pascale Sebahoun, Pascale Siohan, Pascale Testevuide, Patrice Deteix, Patrice Nolen, Patricia Hue, Patricia Lemarchand, Patrick Donnadieu, Patrick Fievet, Patrick Fohrer, Patrick Francais, Patrick Giraud, Patrick Hallonet, Patrick Henri, Patrick Michaut, Patrick Niaudet, Patrick Pauly, Patrick Thomas, Patrik Deleaval, Paul Finielz, Paul Stroumza, Paule Hardy Yverneau, Pauline Caillard, Pedro Palacin, Perrine Aubertin, Philippe Attias, Philippe Chauveau, Philippe Coindre, Philippe Coste, Philippe Dubot, Philippe Fournier, Philippe Hiernaux, Philippe Jousset, Philippe Lan Yue Wah, Philippe Lang, Philippe Le Cacheux, Philippe Martin Dupont, Philippe Michel, Philippe Mirgaine, Philippe Moriniere, Philippe Nicoud, Philippe Rieu, Philippe Rousseau, Philippe Sporer, Philippe Thorel, Philippe Vanhille, Philippe Vigeral, Philippe Zaoui, Pierre Bataille, Pierre Brignon, Pierre Filipozzi, Pierre Housset, Pierre Peyronnet, Pierre Ramperez, Pierre Vautrin, Pierre Alexandre Michel, Pierre Francois Westeel, Pierre Louis Carron, Pierre Yves Durand, Pierrot Parent, Piotr Seniuta, François Kuentz, Rabah Fraoui, Rachel Tetaz, Rachid Amaria, Rachid Bourouma, Rachid Djeffal, Rachida Nebbad, Radia Allal, Radu Dimulescu, Rafaat Boustani, Rafik Mesbah, Raifat Makdassi, Raji Diab, Raluca Puslenghea, Raoul Roura, Rateb Khayat, Raymond Azar, Raymond Frayssinet, Regine Monkam, Rehouni Boulahrouz, Remi Boudet, Renato Demontis, Renaud Gansey, Rene Cuvelier, Renee Schmitt, Reschad Noordally, Reynald Binaut, Rezkallah Latif, Richard Dufresne, Richard Montagnac, Richard Reade, Robert Genin, Robert Novo, Rocsana Fickl, Roger Dufresne, Roger Magnol, Roland Issautier, Romain Mortelette, Ronan Delaval, Ronan Lohro, Roseline M'barga, S. Beau, Clémentine Dupuis, Marie Jacques Vidil, Sabria Hacini, Said Dahmoune, Saliha Lekhal, Salima Ahriz Sakso, Salima Saksi, Salvatore Citarda, Samir Boubenider, Samuel Kassis, Sandra Verhille, Sandrine Genestier, Sandrine Muller, Saoussen Krid, Sarah Richter, Sebastien Delbes, Sebastien Mailliez, Sebastien Veillon, Sébastien Nony, Seddick Benarbia, Severine Beaudreuil, Sidi Ali Benyaghla, Simon Duquennoy, Simona Baluta, Simona Boncila, Sonia Mzoughi, Sonia Ribal, Sophie Acamer, Sophie Chauvet, Sophie Girerd, Sophie Ozenne, Sophie Parahy, Sophie Rubens Duval, Sophie Taque, Soraya Menouer, Soumaya Chargui, Stanislas Bataille, Stephane Barbier, Stephane Billion, Stephane Roueff, Stephane Torner, Stephane Jean Martin, Stephanie Coupel, Sylvie Cloarec, Sylvie Lavaud, Sylvie Leou, T. Chatelet, Tania Onesta, Tassadit Benhabib, Tayeb Bensalem, Theodora Dimulescu, Theophile Sawadogo, Thibault Dolley Hitze, Thierry Baranger, Thierry Boudemaghe, Thierry Hannedouche, Thierry Krummel, Thierry Milcent, Thomas Dervaux, Thomas Guincestre, Thomas Kofman, Thomas Raphael, Thomas Sadreux, Tim Ulinski, Tiphaine Guyon Roger, Tomas Serrato, Tomek Kofman, Tony Wong, Toufik Boubia, Ubald Assogba Gbindoun, Usama Khuzaie, Valerie Caudwell, Valerie Chatelet, Valerie Crougneau, Valerie De Precigout, Valerie Drouillat, Valerie Galantine, Valerie Granveau Hugot, Valerie Leroy, Veronique Boubia, Veronique Falque, Veronique Fournier, Veronique Queron, Veronique Viviani, Victor Gueuttin, Victor Panescu, Victorio Menoyo Calonge, Viet Nguyen, Vincent Allot, Vincent Delattre, Vincent Leduc, Vincent Pradier, Violaine Emal Aglae, Viorica Badulescu, Virginia Molina, Virginie Besson, Virginie Chaigne, Waddah Jaber, Wael Boudi, Wael El Haggan, Wen Qin Guillon, Wided Tabbi Aneni, William Hanf, Wladimir Kohn, Xavier Bellenfant, Xavier Moreau Gaudry, Yahsou Delmas, Yannick Knefati, Yannick Saingra, Yannick Tirolien, Youssef Mann, Yvan Brunak, Yves Dimitrov, Yves Doussy, Yves Tanter, Zaid Benabid, Zaara Soltani, Zacharia Boukerroucha, Zafer Takla, Zana Ramanantsialonina, Zara Dickson, Zead Tubail, Zoe Koochaki Pour, Zohra Boukhalfa, Zohra Jacquot, Agence de la biomédecine [Saint-Denis la Plaine], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Université de Caen Normandie (UNICAEN), Normandie Université (NU), CALYDIAL Vienne, Partenaires INRAE, Centre hospitalier universitaire de Nantes (CHU Nantes), Hôpital Armand Trousseau [AP-HP] (AP-HP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre recherche en CardioVasculaire et Nutrition = Center for CardioVascular and Nutrition research (C2VN), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre de néphrologie et transplantation rénale [Hôpital de la Conception - APHM], Assistance Publique - Hôpitaux de Marseille (APHM)-Hôpital de la Conception [CHU - APHM] (LA CONCEPTION), Service d'Epidémiologie et Evaluations Cliniques [CHRU Nancy] (Pôle S2R), Centre Universitaire des Maladies Rénales [CHU Caen] (CUMR Caen), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Institut de Génomique Fonctionnelle (IGF), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), Groupe hospitalier de la région de Mulhouse Sud-Alsace (GHRMSA), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Aide à la Décision pour une Médecine Personnalisé - Laboratoire de Biostatistique, Epidémiologie et Recherche Clinique - EA 2415 (AIDMP), Université Montpellier 1 (UM1)-Université de Montpellier (UM), Assistance Publique - Hôpitaux de Marseille (APHM), Service de diabétologie [CHU Pitié-Salpétrière], CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Université de Caen Normandie (UNICAEN), Service de Diabétologie [CHU Pitié-Salpétrière], and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)
- Subjects
0301 basic medicine ,Male ,medicine.medical_treatment ,[SDV]Life Sciences [q-bio] ,030232 urology & nephrology ,Hemodialysis, Home ,Disease ,MESH: COVID-19 / therapy ,registry ,Ambulatory Care Facilities ,[SDV.MHEP.UN]Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology ,MESH: Aged, 80 and over ,0302 clinical medicine ,[SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases ,Risk Factors ,80 and over ,Prevalence ,covid ,dialysis ,epidemiology ,mortality ,Aged ,Aged, 80 and over ,COVID-19 ,Case-Control Studies ,Critical Care ,Female ,France ,Humans ,Incidence ,Middle Aged ,Patient Acuity ,Protective Factors ,Registries ,Renal Dialysis ,SARS-CoV-2 ,Sex Factors ,Hypoalbuminemia ,MESH: France / epidemiology ,education.field_of_study ,Incidence (epidemiology) ,3. Good health ,MESH: COVID-19 / epidemiology ,Nephrology ,Hemodialysis ,medicine.medical_specialty ,Population ,Lower risk ,Article ,03 medical and health sciences ,MESH: Sex Factors ,Internal medicine ,medicine ,MESH: SARS-CoV-2 ,MESH: Renal Dialysis / statistics & numerical data ,education ,Dialysis ,Vascular disease ,business.industry ,medicine.disease ,Former Smoker ,MESH: Critical Care / statistics & numerical data ,030104 developmental biology ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,business ,Home ,[SDV.MHEP]Life Sciences [q-bio]/Human health and pathology ,MESH: Hemodialysis, Home / statistics & numerical data - 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., Graphical abstract
- Published
- 2020
5. La java des frelons : Roman
- Author
-
François Maurice and François Maurice
- Abstract
Oserez-vous vous plongez dans la Fatalité, Galaxie mystérieuse réputée sans pitié, destination interdite aux touristes non accompagnés?Intercalée entre l'Holocène et l'Anthropocène, une période d'intense effervescence nommée Crapulocène, riche en audacieuses inventions, berceau des acrobaties les plus osées, voit naître une dynastie d'immortels : celle des Roublards certifiés.La Java des Frelons est dédiée aux très nombreuses victimes de l'indécence des uns couverte par l'enfumage industriel des autres. Chacun y reconnaîtra les siens. Un voyage humoristique et ironique au cœur d'une période historique mouvementée, mélangeant dieux grecs, liliputiens et stars du rock.
- Published
- 2021
6. Converting to organic farming and implementing conservation agriculture techniques in the plains of Limagne : an analysis of farmers' trajectory
- Author
-
Pagès, Hugo Francois Maurice, Breland, Tor Arvid, Francis, Charles, and Mulder, Jan
- Subjects
Stakeholders - Abstract
The change of western countries’ agricultural models is an increasingly needed endeavor. Alternatives to conventional farming practices exist, but only a few farmers have been able to bring about structural change in their farming system. Beyond the technical issue, studies have highlighted the numerous socio-economic barriers farmers may face when envisioning practices change. More precisely, farmers are nowadays at the crossroad of diverse obstacles, visions and interests, indicating that the transition of practices needs to be tackled at a collective level. The present study aims at understanding better how the role of stakeholders of different nature intervenes during the trajectory of farmers who have already engaged practices change. Around thirty interviews of farmers were carried out in the plains of Limagne to assess the territorial dynamics supporting these changes. The results of the study show that the stakeholders involved are slowly shifting in the support given to organic farming conversion while nearly none exist at territory-level when farmers implement conservation agriculture techniques. The local context of the Limagne plains, with the structural presence of Limagrain Company, let foresee long-term lock-ins in the dissemination of more environmental-friendly practices.
- Published
- 2019
7. Response of a thermoacoustic refrigerator to the variation of the driving frequency and loading
- Author
-
Jebali, Fathi, Lubiez, Jean Valentin, and François, Maurice-Xavier
- Published
- 2004
- Full Text
- View/download PDF
8. Conjectural bifurcation analysis of the contact-induced vibratory response of an aircraft engine blade
- Author
-
Francois Maurice Garcin, Alain Batailly, Mathias Legrand, Antoine Millecamps, Laboratoire d'Analyse Vibratoire et Acoustique (LAVA), École Polytechnique de Montréal (EPM), McGill University = Université McGill [Montréal, Canada], SNECMA Villaroche [Moissy-Cramayel], and Safran Group
- Subjects
Engineering ,turbine blade ,Acoustics and Ultrasonics ,Turbine blade ,business.industry ,Mechanical Engineering ,bifurcation analysis ,[SPI.MECA.VIBR]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph] ,Unilateral contact ,Angular velocity ,Aerodynamics ,Structural engineering ,Condensed Matter Physics ,[SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph] ,Stiffening ,law.invention ,Rotor–stator interaction ,Nonlinear system ,non-linear dynamics ,Mechanics of Materials ,law ,Turbomachinery ,rotor/stator interaction ,business - Abstract
International audience; This paper deals with the numerical investigation of the unilateral contact-induced dynamics of a turbomachine blade rotating within a perfectly rigid yet distorted casing. This investigation is motivated by unelucidated vibratory behaviours observed experimentally. The simulations are based on an in-house time-marching strategy incorporating Lagrange multipliers for the unilateral contact treatment, as well as centrifugal stiffening and abradable coating removal. Significant extensions are proposed through the implementation of (1) aerodynamic loading on the blade and (2) post-processing techniques involving the empirical mode decomposition which provides fruitful insights on important transient phenomena. A thorough bifurcation analysis with and without aerodynamic loading highlights the existence of flip bifurcations with period-doubling and period-halving sequences over a broad angular speed range. Numerical simulations with external aerodynamic loading yield quasi-periodic and likely to be chaotic motions that could not be observed under vacuum. The proposed numerical investigations underline the key role of the aerodynamic loading in the blade dynamics and suggest that unexplained experimental vibratory behaviours are related to the vacuum conditions of the experiment.; Cet article porte sur des investigations numériques relativement à la réponse vibratoire d’une aube de turbomachine, suite à des contacts structuraux. Le carter environnant est déformé mais supposé infiniment rigide. Ces travaux sont motivés par l’observation expérimentale de plusieurs phénomènes vibratoires qui restent inexpliqués. Les simulations effectuées reposent sur l’utilisation d’un outil numérique développé au laboratoire combinant un algorithme de calcul de multiplicateurs de Lagrange pour le traitement du contact et la prise en compte des effets centrifuges et de l’arrachement du revêtement abradable. Des ajouts majeurs à cet outil sont proposés avec l’implémentation de: (1) la prise en compte d’un chargement aérodynamique sur l’aube et (2) le post-traitement des résultats par l’intermédiaire de méthodes de décomposition en modes empiriques qui permettent de mieux analyser les phénomènes transitoires. Une analyse de stabilité avec et sans chargement aérodynamique met en évidence l’existence de points de bifurcation sur une large plage de vitesses de rotation. Les simulations numériques prenant en compte le chargement aérodynamique permettent d’observer des mouvements quasi-périodiques et d’autres probablement chaotiques qui n’ont jamais été observé sous vide.
- Published
- 2015
9. Treatment tolerance and patient-reported outcomes favor online hemodiafiltration compared to high-flux hemodialysis in the elderly
- Author
-
Marion Morena, Audrey Jaussent, Lotfi Chalabi, Hélène Leray-Moragues, Leila Chenine, Alain Debure, Damien Thibaudin, Lynda Azzouz, Laure Patrier, Francois Maurice, Philippe Nicoud, Claude Durand, Bruno Seigneuric, Anne-Marie Dupuy, Marie-Christine Picot, Jean-Paul Cristol, Bernard Canaud, Aida Afiani, Didier Aguilera, Yamina Azymah, Francois Babinet, Claire Belloc, Jean- Christophe Bendini, Christian Broyet, Philippe Brunet, Marie-Hélène Chabannier, Leïla Chenine, Sylvie Chiron, Jean-Philippe Coindre, Angélique Colin, François Combarnous, Stéphanie Coupel, Alain Cremault, Irima Dancea, Catherine Delcroix, Pascale Depraetre, Assia Djema, Francis Ducret, Ibrahim Farah, Dominique Fleury, Abdallah Guerraoui, Marie-Paule Guillodo, Atman Haddj-Elmrabet, Maxime Hoffmann, Richard Ibos, Mohamed Shariful Islam, Dominique Jaubert, Josiane Joule, Véronique Joyeux, Kristian Kunz, Mélodie Lagarrigue, Achour Laradi, Frédéric Lavainne, Dominique Le Grignou, Gaétan Lebrun, Anne Lefebvre, Jean-Jacques Lefevre, Gaëlle Lefrancois, Vincent Lemaitre, Mehadji Maaz, Eric Magnant, François Maurice, Hesham Mohey, Michel Normand, Hilaire Nzeyimana, Messaoud Ouziala, Sophie Parahy, Franck Perrin, Philippe Pointet, Jacky Potier, Olivier Puyoo, Isabelle Rey, Jean-Pierre Rivory, Fabienne Rouleau, Marie-Odile Serveaux, Danièle Simonin, Angelo Testa, Cécile Turc-Baron, Carlos Vela, Sandor Vido, Laurence Vrigneaud, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), CHU Saint-Etienne, Service de Néphrologie - Immunologie Clinique [Toulouse], CHU Toulouse [Toulouse]-Hôpital de Rangueil, CHU Toulouse [Toulouse]-PRES Université de Toulouse, Département de biochimie [Montpellier], Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Lapeyronie, Université de Montpellier (UM), Herrada, Anthony, and Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-PRES Université de Toulouse
- Subjects
Male ,Time Factors ,medicine.medical_treatment ,030232 urology & nephrology ,Kaplan-Meier Estimate ,030204 cardiovascular system & hematology ,Kidney ,[SDV.MHEP.UN]Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology ,law.invention ,0302 clinical medicine ,Randomized controlled trial ,Quality of life ,law ,Risk of mortality ,Prospective Studies ,Prospective cohort study ,ComputingMilieux_MISCELLANEOUS ,Aged, 80 and over ,Age Factors ,3. Good health ,Hospitalization ,Treatment Outcome ,Nephrology ,Female ,Kidney Diseases ,France ,Hemodialysis ,medicine.symptom ,safety ,medicine.medical_specialty ,Metabolic bone disease ,03 medical and health sciences ,Renal Dialysis ,Internal medicine ,medicine ,Humans ,Intensive care medicine ,Adverse effect ,Geriatric Assessment ,Aged ,hemodiafiltration ,intradialytic tolerance ,business.industry ,medicine.disease ,[SDV.MHEP.UN] Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology ,mortality ,cardiovascular risk biomarkers ,[SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie ,Quality of Life ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,business ,chronic kidney disease ,Muscle cramp - Abstract
Large cohort studies suggest that high convective volumes associated with online hemodiafiltration may reduce the risk of mortality/morbidity compared to optimal high-flux hemodialysis. By contrast, intradialytic tolerance is not well studied. The aim of the FRENCHIE (French Convective versus Hemodialysis in Elderly) study was to compare high-flux hemodialysis and online hemodiafiltration in terms of intradialytic tolerance. In this prospective, open-label randomized controlled trial, 381 elderly chronic hemodialysis patients (over age 65) were randomly assigned in a one-to-one ratio to either high-flux hemodialysis or online hemodiafiltration. The primary outcome was intradialytic tolerance (day 30-day 120). Secondary outcomes included health-related quality of life, cardiovascular risk biomarkers, morbidity, and mortality. During the observational period for intradialytic tolerance, 85% and 84% of patients in high-flux hemodialysis and online hemodiafiltration arms, respectively, experienced at least one adverse event without significant difference between groups. As exploratory analysis, intradialytic tolerance was also studied, considering the sessions as a statistical unit according to treatment actually received. Over a total of 11,981 sessions, 2,935 were complicated by the occurrence of at least one adverse event, with a significantly lower occurrence in online hemodiafiltration with fewer episodes of intradialytic symptomatic hypotension and muscle cramps. By contrast, health-related quality of life, morbidity, and mortality were not different in both groups. An improvement in the control of metabolic bone disease biomarkers and β2-microglobulin level without change in serum albumin concentration was observed with online hemodiafiltration. Thus, overall outcomes favor online hemodiafiltration over high-flux hemodialysis in the elderly.
- Published
- 2017
10. Experimental Measurement of Dynamic Forces Generated during Short-Duration Contacts: Application to Blade-Casing Interactions in Aircraft Engines
- Author
-
Pierre Chevrier, Marion Cuny, Francois Maurice Garcin, Sylvain Philippon, Laboratoire de mécanique Biomécanique Polymère Structures (LaBPS), Université de Lorraine (UL), SNECMA Villaroche [Moissy-Cramayel], and Safran Group
- Subjects
Engineering ,business.industry ,Stator ,Mechanical Engineering ,System of measurement ,Modal analysis ,Bandwidth (signal processing) ,Abradable ,Aerospace Engineering ,Mechanical engineering ,Mechanics ,Dynamic force measurement ,Experimental set-up ,[SPI.MAT]Engineering Sciences [physics]/Materials ,law.invention ,Mechanics of Materials ,law ,Solid mechanics ,High speed interaction ,Orthogonal cutting ,business ,Short duration ,Casing ,Gas compressor - Abstract
International audience; The main purpose of this paper is to present an experimental setup dedicated to the study of high speed interactions such as those occurring between the rotating blade and the casing of an aircraft engine compressor. A simplified approach of rotor/stator interaction was experimentally simulated for ranges of velocities and interaction depths varying from 60 m/s to 270 m/s and from 0.13 mm to 0.35 mm respectively. Only high speed orthogonal contact were studied. The device was made up of a ballistic bench projecting a sample of abradable material (M601) against an instrumented tool (Steel 42CrMo4) representing the simplified blade shape. In order to increase significantly the measurement system bandwidth and to measure accurately the high speed interaction forces, a correction method based on the principle of modal analysis was developed and successfully employed. This work provides new experimental data regarding the material behavior of M601 in high speed orthogonal cutting conditions. They were in good agreement with those already observed in the literature for velocities up to 100 m/s. These new results showed the non-linear increase of the mean interaction force with the velocity and incursion depth for the large range of velocities considered in this present work. Post-experiment observations gave evidence of two wear mechanisms: cutting and plastic deformation.
- Published
- 2013
11. Effect of a Constriction on the Vortex Density in He II Superflow
- Author
-
François, Maurice, Lhuillier, Daniel, Le Ray, Michel, Vidal, Félix, Timmerhaus, K. D., editor, O’Sullivan, W. J., editor, and Hammel, E. F., editor
- Published
- 1974
- Full Text
- View/download PDF
12. AC Measurements of a Coupling Between Dissipative Heat Flux and Mutual Friction Force in He II
- Author
-
Vidal, Félix, Le Ray, Michel, François, Maurice, Lhuillier, Daniel, Timmerhaus, K. D., editor, O’Sullivan, W. J., editor, and Hammel, E. F., editor
- Published
- 1974
- Full Text
- View/download PDF
13. Health outcomes and the transition experience of HIV-infected adolescents after transfer to adult care in Québec, Canada
- Author
-
Marion Onnorouille, Fatima Kakkar, Hugo Soudeyns, Normand Lapointe, Dimitri Van der Linden, Silvie Valois, Francois Maurice, Valérie Lamarre, UCL - SSS/IREC/PEDI - Pôle de Pédiatrie, and UCL - (SLuc) Service de pédiatrie générale
- Subjects
Adult ,Male ,Transition to Adult Care ,medicine.medical_specialty ,Pediatrics ,Adolescent ,Pediatric hiv ,HIV Infections ,Outcomes ,Adult care ,Adolescents ,Health outcomes ,HIV Long-Term Survivors ,03 medical and health sciences ,0302 clinical medicine ,Surveys and Questionnaires ,030225 pediatrics ,Hiv infected ,medicine ,Humans ,Pediatrics, Perinatology, and Child Health ,030212 general & internal medicine ,Sida ,biology ,business.industry ,Medical record ,Quebec ,HIV ,Perinatal infection ,Patient Acceptance of Health Care ,biology.organism_classification ,Infectious Disease Transmission, Vertical ,Treatment Outcome ,Family medicine ,Transition ,Pediatrics, Perinatology and Child Health ,Cohort ,Female ,business ,Research Article ,Follow-Up Studies - Abstract
BACKGROUND: Little is known on outcomes after transition to adult care among adolescents with perinatal HIV infection. Though there is data from other chronic pediatric diseases suggesting increased morbidity and mortality following transfer to adult care, this has not well been studied among the first wave of survivors of perinatal HIV infection. The primary objective of this study was to determine outcomes after transition to adult care among a cohort of HIV-infected adolescents in Québec, Canada. Secondary objectives were to document participant experiences with the transition process, identify barriers to successful transition, and potential changes to improve the transition process. METHODS: Clinic records were reviewed to identify all perinatally-infected youth who transitioned from the Centre Maternel et Infantile sur le Sida pediatric HIV clinic (Montreal) at age 18 to an adult care provider between 1999 and 2012. Transitioned patients were contacted using last available patient or parental listed phone number on hospital record, internet based telephone directory, or social media. A standardized questionnaire was administered by telephone or in-person interview, and copies of current medical records obtained from treating physicians. RESULTS: Forty-five patients were transferred between 1999 and 2012, among whom 25 consented to the study, eight were lost to follow-up, eight refused participation, and four were deceased. Overall 76 % of patients remained engaged in care, defined by at least one physician visit within 6 months of the interview. Over 50 % reported difficulty with adherence to their current drug regimens. At one-year post-transfer, there was a decrease in the proportion of patients with CD4 count >500 cells/mm(3) from 64 to 29 %, and a statistically significant decrease in absolute CD4 count (mean 370 vs 524 cells/mm(3), p = 0.04.). The majority (92 %) of participants felt that 18 was too young an age to transfer to adult care, and provided suggestions for improving the transition process. CONCLUSIONS: This group of perinatally-infected youth remained engaged in care after transition, however difficulties with adherence and assuming responsibility for their own care were identified as issues in their post-transition care. The high rate of mortality among them and the changes to their health status post-transition suggest that further work is necessary to document the health outcomes of this group in larger, more diverse cohort settings.
- Published
- 2016
14. Randomized Equivalence Study Evaluating the Possibility of Switching Hemodialysis Patients Receiving Subcutaneous Human Erythropoietin Directly to Intravenous Darbepoetin Alfa
- Author
-
Charles, Chazot, Jean Claude, Terrat, Alexandre, Dumoulin, Kim-Seng, Ang, Jean Paul, Gassia, Khalil, Chedid, Francois, Maurice, Bernard, Canaud, and D, Yousfi
- Subjects
Adult ,Male ,medicine.medical_specialty ,Randomization ,Adolescent ,Darbepoetin alfa ,Injections, Subcutaneous ,medicine.medical_treatment ,Hemoglobins ,Renal Dialysis ,medicine ,Humans ,Antianemia agent ,Pharmacology (medical) ,In patient ,Prospective cohort study ,Erythropoietin ,Aged ,Aged, 80 and over ,business.industry ,Anemia ,Middle Aged ,medicine.disease ,Recombinant Proteins ,Surgery ,Therapeutic Equivalency ,Anesthesia ,Injections, Intravenous ,Kidney Failure, Chronic ,Female ,Hemodialysis ,business ,medicine.drug ,Kidney disease - Abstract
Background: Darbepoetin alfa is an erythropoiesis-stimulating agent (ESA) used either intravenously or subcutaneously with no dose penalty; however, the direct switch from subcutaneous recombinant human erythropoietin (rHuEPO) to intravenous darbepoetin has barely been studied. Objective: To establish the equivalence of a direct switch from subcutaneous rHuEPO to intravenous darbepoetin versus an indirect switch from subcutaneous rHuEPO to intravenous darbepoetin after 2 months of subcutaneous darbepoetin in patients undergoing hemodialysis. Methods: In this open, randomized, 6-month, prospective study, patients with end-stage kidney disease who were on hemodialysis were randomized into 2 groups: direct switch from subcutaneous rHuEPO to intravenous darbepoetin (group 1) and indirect switch from subcutaneous rHuEPO to intravenous darbepoetin after 2 months of subcutaneous darbepoetin (group 2). A third, nonrandomized group (control), consisting of patients treated with intravenous rHuEPO who were switched to intravenous darbepoetin, was also studied to reflect possible variations of hemoglobin (Hb) levels due to change from one type of ESA to the other. The primary outcome was the proportion of patients with stable Hb levels at month 6. Secondary endpoints included Hb stability at month 3, dosage requirements for darbepoetin, and safety of the administration route. Results: Among 154 randomized patients, the percentages with stable Hb levels were equivalent in groups 1 and 2, respectively, at month 3 (86.0% vs 91.3%) and month 6 (82.1% vs 81.6%; difference –0.5 [90% CI –12.8 to 11.8]). Mean Hb levels between baseline and month 6 remained stable in both groups, with no variation in mean darbepoetin dose. Mean ferritin levels remained above 100 μg/L in the 3 groups during the whole study, and darbepoetin was well tolerated. Conclusions: This study has shown equivalent efficacy on Hb stability without the need for dosage increase in patients switched directly from subcutaneous rHuEPO to intravenous darbepoetin.
- Published
- 2009
15. Snecma’s Viewpoint on the Numerical and Experimental Simulation of Blade-Tip/Casing Unilateral Contacts
- Author
-
Mathias Legrand, Antoine Millecamps, Alain Batailly, Francois Maurice Garcin, SNECMA Villaroche [Moissy-Cramayel], Safran Group, McGill University = Université McGill [Montréal, Canada], and ASME
- Subjects
Engineering ,Stator ,Context (language use) ,02 engineering and technology ,Mistuning ,engineering.material ,01 natural sciences ,law.invention ,nonlinear dynamics ,[SPI]Engineering Sciences [physics] ,0203 mechanical engineering ,Coating ,law ,0103 physical sciences ,Turbomachinery ,turbomachinery ,010301 acoustics ,business.industry ,Rotor (electric) ,rotor-stator interactions ,Turbojet ,Structural engineering ,[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] ,design process ,020303 mechanical engineering & transports ,unilateral contact and friction ,business ,Casing - Abstract
International audience; Aircraft engine manufacturers are developping a new generation of turbojet engines featuring a lower impact on the environment, increased performances as well as reduced gas consumption. The efficiency of an engine is mostly driven by the operating clearance between the rotating parts and the stator. Accordingly, modern designs focus on the minimization of these clearances. In this context, unavoidable rotor imbalances or mistuning stemming from manufacturing processes as well as distortions resulting from thermal expansion or assembly conditions may generate blade-tip/casing contacts that are now considered as non-accidental operating conditions. In order to minimize the consequences of such events, an abradable coating is sprayed along the inner surface of the casing and acts as a fuse when the blade and the casing are in contact. However, even when an abradable coating is used, significant structural damages and wear as well as blade failures have been witnessed experimentally. The understanding of the physical phenomena at play called, on one hand, for throrough experimental investigations of rotor/stator contacts on full-scale stages of compressors and underlined that blade failure is mainly due to vibratory fatigue although the abradable coating is worn. On the other hand, numerical simulations have been performed to better understand the blade dynamics: over the last decade Snecma and its academic partners jointly developed a code for the simulation of COntacts between ROtor and Stator: COROS. This code allows for the simulation of contacts—with a Lagrange multiplier contact treatment procedure—between full 3D models of engine components and accounts for abradable coating material removal. In particular, the simulation of experimental setups with COROS highlighted the correlation between the blade vibratory response and the abradable material removal. Yet still an experimental code, this paper addresses the integration of COROS within the design process of aircraft engine blades at Snecma. The paper focuses on ongoing research for the identification of critical parameters in the arising of interactions as early as the design stage of components. A particular attention is paid to the mechanical properties of the abradable coating for which both experimental and numerical investigations are detailed.
- Published
- 2015
16. Dynamic analysis of the interaction between an abradable material and a titanium alloy
- Author
-
Francois Maurice Garcin, Guy Sutter, Sylvain Philippon, Laboratoire de physique et mécanique des matériaux (LPMM), Université Paul Verlaine - Metz (UPVM)-Institut National Polytechnique de Lorraine (INPL)-Ecole Nationale d'Ingénieurs de Metz (ENIM)-Centre National de la Recherche Scientifique (CNRS), SNECMA Villaroche [Moissy-Cramayel], and Safran Group
- Subjects
Materials science ,Abradable material ,Mechanical engineering ,Force measurement ,Blade/casing interaction ,02 engineering and technology ,Edge (geometry) ,0203 mechanical engineering ,Materials Chemistry ,Chip formation ,High-speed experimental device ,Titanium alloy ,Turbojet ,Surfaces and Interfaces ,Radius ,Mechanics ,[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Surfaces, Coatings and Films ,020303 mechanical engineering & transports ,Contact mechanics ,Mechanics of Materials ,0210 nano-technology ,Gas compressor ,Casing - Abstract
International audience; The purpose of the present paper is to study interaction phenomena between an abradable material (M601) and a titanium alloy (TA6V). This interaction which can occur in an aircraft engine when the rotating blade tips rub on the compressor casing, is analyzed on an experimental laboratory set-up. Only orthogonal cutting conditions are considered in this preliminary study to monitor the load evolution with velocity. The experimental results obtained for a range of velocities $10 < V < 10^7$ m/s and for a range interaction depth $0.05 < t_1 < 0.5$ mm are presented. After analysis of measurements, the mean interaction force increases proportionally to the interaction depth increment. The effects of the contact geometry on the loads, especially the radius of the edge, are investigated. The increase of the radius value for a given interaction depth increases the load value.This work provides new basic data for behaviour laws introduced in numerical models simulating the interaction between the blade tip and the compressor casing in turbine engine applications. Original high-speed photographs recorded in real time during the process illustrate the chip separation by brittle manner. A temperature field in the abradable material will be able to be obtained for only a low speed of 5 m/s.
- Published
- 2006
17. Comportement dynamique d'une aube de compresseur haute-pression sous l'effet cumulé d'un chargement aérodynamique et de contraintes unilatérales de contact
- Author
-
Francois Maurice Garcin, Mathias Legrand, Alain Batailly, Antoine Millecamps, Structural Dynamics and Vibration Laboratory [Montréal], Department of Mechanical Engineering [Montréal], McGill University = Université McGill [Montréal, Canada]-McGill University = Université McGill [Montréal, Canada], SNECMA Villaroche [Moissy-Cramayel], Safran Group, and ASME
- Subjects
Engineering ,Stator ,Unilateral contact ,02 engineering and technology ,01 natural sciences ,010305 fluids & plasmas ,law.invention ,vibrations ,nonlinear dynamics ,[SPI]Engineering Sciences [physics] ,aeronautical engine ,0203 mechanical engineering ,law ,contact mechanics ,0103 physical sciences ,Bifurcation ,business.industry ,Rotor (electric) ,rotor/stator interactions ,Structural engineering ,Aerodynamics ,Vibration ,020303 mechanical engineering & transports ,Contact mechanics ,business ,Gas compressor - Abstract
International audience; Recent studies focused on the numerical prediction of structural instabilities that may arise in rotating components of an aircraft engine. These instabilities are commonly classified into two categories: those induced by aerodynamic phenomena (such as the pressure applied on the blade by the incoming air flow) and those related to structural phenomena (such as potential blade/casing contacts). Based on an existing numerical strategy for the analysis of rotor/stator interactions induced by unilateral contacts between rotating and static components, this paper aims at combining both types of instabilities and provides a qualitative analysis of structural interactions that may arise within the high-pressure compressor of an aircraft engine. The aerodynamic pressure on the blade is simplified as a sinusoidal external load whose frequency depends on the number of upstream guide vanes. Results are presented both in time and frequency domains. Detailed bifurcation diagrams and Poincaré maps underline the fundamental differences in the nature of the witnessed interactions with and without aerodynamic loading on the blade.; Plusieurs etudes récentes ont eu pour objet la simulation numérique des instabilités structurelles pouvant survenir dans des machines tournantes telles que des moteurs d'avion. Typiquement, ces instabilités sont séparées en deux catégories : celles relatives aux phénom enes aérodynamiques (liés par exemplè a la pression imposée sur l'aube par le flux d'air) et celles relatives a des phénom enes uniquement structurels (comme le contact aube/carter). En se basant sur l'utilisation d'une méthode numérique dédiéè a l'analyse d'interactions aube/carter initiées par des contacts entre parties tournante et fixe, les travaux présentés dans cet article ont pour objectif d'analyser conjointement les deux types d'instabilité précédemment citées et de fournir une analyse qualitative des types de régimes d'interactions pouvant survenir dans un moteur d'avion. La pression aérodynamique est modéliséè a l'aide d'un chargement externe d'amplitude sinuso¨dale et dont la fréquence dépend du nombre de redresseurs en aval. Les résultats sont donnés dans les espace temporel et fréquentiel. Les différences fondamentales de nature entre les différentes interactions simulées avec et sans pression aérodynamique sont mises en evidence par des diagrammes de bifurcation détaillés et des cartes de Poincaré.
- Published
- 2014
18. Redesign of a High-Pressure Compressor Blade Accounting for Nonlinear Structural Interactions
- Author
-
Sébastien Cochon, Alain Batailly, Antoine Millecamps, Francois Maurice Garcin, and Mathias Legrand
- Subjects
Engineering ,Blade (geometry) ,Stator ,Rotor (electric) ,business.industry ,Mechanical Engineering ,Energy Engineering and Power Technology ,Aerospace Engineering ,Mechanical engineering ,Unilateral contact ,Aerodynamics ,Structural engineering ,Stiffening ,law.invention ,Fuel Technology ,Contact mechanics ,Nuclear Energy and Engineering ,law ,business ,Gas compressor - Abstract
Recent numerical developments dedicated to the simulation of rotor/stator interaction involving direct structural contacts have been integrated within the Snecma industrial environment. This paper presents the first attempt to benefit from these developments and account for structural blade/casing contacts at the design stage of a high-pressure compressor blade. The blade of interest underwent structural divergence after blade/abradable coating contact occurrences on a rig test. The design improvements were carried out in several steps with significant modifications of the blade stacking law while maintaining aerodynamic performance of the original blade design. After a brief presentation of the proposed design strategy, basic concepts associated with the design variations are recalled. The iterated profiles are then numerically investigated and compared with respect to key structural criteria such as: (1) their mass, (2) the residual stresses stemming from centrifugal stiffening, (3) the vibratory level under aerodynamic forced response and (4) the vibratory levels when unilateral contact occurs. Significant improvements of the final blade design are found: the need for an early integration of nonlinear structural interactions criteria in the design stage of modern aircraft engines components is highlighted.Copyright © 2014 by ASME
- Published
- 2014
19. The influence of spin on second sound in superfluid3He-4He mixtures
- Author
-
Lhuillier, Daniel and Francois, Maurice
- Published
- 1977
- Full Text
- View/download PDF
20. The Young and the Resistant:HIV-Infected Adolescents at the Time of Transfer to adult Care
- Author
-
Francois Maurice, Hugo Soudeyns, Doris G. Ransy, Fatima Kakkar, Valérie Lamarre, Dimitri Van der Linden, Normand Lapointe, Alena Motorina, UCL - SSS/IREC/PEDI - Pôle de Pédiatrie, and UCL - (SLuc) Service de pédiatrie générale
- Subjects
Pediatrics ,medicine.medical_specialty ,business.industry ,Human immunodeficiency virus (HIV) ,General Medicine ,Adult care ,Drug resistance ,medicine.disease_cause ,Antiretroviral therapy ,Infectious Diseases ,Viral Load result ,Hiv infected ,Pediatrics, Perinatology and Child Health ,Health care ,Immunology ,medicine ,business ,Viral load - Abstract
Combined antiretroviral therapy allows children with human immunodeficiency virus (HIV) to reach adulthood. We studied 45 adolescents at the time of transfer to adult care. Despite universal healthcare access, over two-thirds of the adolescents were failing treatment, which was manifested by detectable HIV-1 viral load, CD4 counts
- Published
- 2013
21. Numerical-Experimental Comparison in the Simulation of Rotor/Stator Interaction Through Blade-Tip/Abradable Coating Contact
- Author
-
Alain Batailly, Mathias Legrand, Francois Maurice Garcin, Antoine Millecamps, Structural Dynamics and Vibration Laboratory [Montréal], Department of Mechanical Engineering [Montréal], McGill University = Université McGill [Montréal, Canada]-McGill University = Université McGill [Montréal, Canada], SNECMA Villaroche [Moissy-Cramayel], and Safran Group
- Subjects
Engineering ,Blade (geometry) ,rubbing ,Energy Engineering and Power Technology ,Aerospace Engineering ,Unilateral contact ,02 engineering and technology ,Stress (mechanics) ,0203 mechanical engineering ,Turbomachinery ,abradable material ,turbomachine ,business.industry ,Mechanical Engineering ,Blade geometry ,Structural engineering ,021001 nanoscience & nanotechnology ,[SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph] ,Rubbing ,Rotor–stator interaction ,020303 mechanical engineering & transports ,Fuel Technology ,Nuclear Energy and Engineering ,rotor/stator interaction ,0210 nano-technology ,business ,Casing ,unilateral contact - Abstract
International audience; Higher aircraft energy efficiency may be achieved by minimizing the clearance between the rotating blade tips and respective surrounding casing. A common technical solution consists in the implementation of an abradable liner which improves both the operational safety and the efficiency of modern turbomachines. However, unexpected abradable wear removal mechanisms were recently observed in experimental set-ups as well as duringmaintenance procedures. Based on a numerical strategy previously developed, the present study introduces a numerical-experimental comparison of such occurrence. Attention is first paid to the review and analysis of existing experimental results. Good agreement with numerical predictions is then illustrated in terms of critical stress levels within the blade as well as final wear profiles of the abradable liner. Numerical results suggest an alteration of the abradablemechanical properties in order to explain the outbreak of a divergent interaction. New blade designs are also explored in this respect and it is found that the interaction phenomenon is highly sensitive to (1) the blade geometry, (2) the abradablematerial properties and (3) the distortion of the casing.
- Published
- 2012
22. Numerical study of a rotor/stator interaction case experimentally simulated with an industrial compressor
- Author
-
Mathias Legrand, Antoine Millecamps, Alain Batailly, Francois Maurice Garcin, Structural Dynamics and Vibration Laboratory [Montréal], Department of Mechanical Engineering [Montréal], McGill University = Université McGill [Montréal, Canada]-McGill University = Université McGill [Montréal, Canada], SNECMA Villaroche [Moissy-Cramayel], and Safran Group
- Subjects
Blade (geometry) ,business.industry ,[PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph] ,Structural engineering ,engineering.material ,7. Clean energy ,[SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph] ,[SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of the structures [physics.class-ph] ,Rotor–stator interaction ,Stress (mechanics) ,Coating ,Distortion ,Turbomachinery ,[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Mechanics of the structures [physics.class-ph] ,engineering ,business ,Gas compressor ,Casing - Abstract
Paper GT2012-68171Volume 7: Structures and Dynamics, Parts A and BConference Sponsors: International Gas Turbine InstituteISBN: 978-0-7918-4473-1; International audience; Higher aircraft energy efficiency may be achieved by minimizing the clearance between the rotating blade tips and respective surrounding casing. A common technical solution consists in the implementation of an abradable liner which improves both the operational safety and the efficiency of modern turbomachines. Recently, unexpected abradable wear removal mechanisms were observed in experimental set-ups and duringmaintenance procedures. The present study introduces a numerical strategy capable to address this occurrence. After focusing on the analysis of the experimental results, the good agreement between experimental observations and numerical results is illustrated in terms of critical stress levelswithin the blade as well as final wear profiles of the abradable liner. New blade designs are also explored in order to assess the impact of blade design on the outbreak of the interaction phenomenon. The prevalence of three dominant parameters in the interaction onset is shown: (1) blade design, (2) abradable material mechanical properties and (3) the need for a global distortion of the casing to synchronize blade-tip/abradable coating contacts.
- Published
- 2012
23. Space thermoacoustic radio-isotopic power system: SpaceTRIPS
- Author
-
Alemany, Antoine, primary, Francois, Maurice, additional, de Blok, Kees, additional, Pierre, Roux Jan, additional, Gerard, Poli, additional, Zeminiani, Eleonnora, additional, Gaia, Enrico, additional, Jeantet, Phillipe, additional, Roy, Emmanuel, additional, Chillet, Christian, additional, Freiberg, Janis, additional, Nikoluskins, Raimonds, additional, Gerbeth, Gunter, additional, and Eckert, Sven, additional
- Published
- 2015
- Full Text
- View/download PDF
24. The VALTA project: Full scale conversion of CHP engine flue gas heat into electricity
- Author
-
Francois, Maurice-Xavier, primary, de Blok, Kees, additional, Bouakhao, Paul, additional, Niphon, Manuel, additional, Thermeau, Jean Pierre, additional, Guestin, Bruno, additional, and Clodic, Denis, additional
- Published
- 2015
- Full Text
- View/download PDF
25. Influence of Thermal Effects During Blade-Casing Contact Experiments
- Author
-
Jean-François Brunel, Francois Maurice Garcin, Marco Nucci, Philippe Dufrenoy, Antoine Millecamps, SNECMA Villaroche [Moissy-Cramayel], Safran Group, Laboratoire de Mécanique de Lille - FRE 3723 (LML), Université de Lille, Sciences et Technologies-Ecole Centrale de Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Université de Lille, Sciences et Technologies, and Université de Lille, Sciences et Technologies-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Engineering ,business.industry ,020209 energy ,Turbojet ,02 engineering and technology ,Mechanics ,Structural engineering ,engineering.material ,Fatigue limit ,Temperature effects ,[SPI]Engineering Sciences [physics] ,020303 mechanical engineering & transports ,Blades ,0203 mechanical engineering ,Coating ,Thermal ,0202 electrical engineering, electronic engineering, information engineering ,Coupling (piping) ,Transient (oscillation) ,business ,Gas compressor ,Casing - Abstract
International audience; In rotating machinery, notably in modern high efficiency compressors, a critical requirement for optimal performance consists in minimizing radial clearances between the rotating bladed disk and the casing. This solution significantly increases the risks of contact between rotating bladed disk and casing and may lead in specific conditions to catastrophic behavior (component failure, etc.). The physical phenomena and mechanisms involved in blade-casing contact interaction situations are still misunderstood. In order to highlight these mechanisms, specific experiments have been performed on an experimental multi-stage compressor of a turbojet with dedicated dynamic and thermal instrumentations. For all configurations tested, major damages are noticed: blades had cracks and the abradable coating of the casing was heavily machined. Results show that the blade failure refers to fatigue limit with first natural mode excitation of the blade. The paper is focused on the analysis of the successive stages of blade dynamic response before the failure. It is shown that this response is influenced by the variations of the blade-casing contact conditions. These conditions are linked to the thermomechanical behavior and wear of coating, illustrated by high thermal levels and non uniform wear profile. Coupling between thermomechanics, wear and dynamic has to be considered to highlight the transient mechanisms leading to the cases of blade failure.
- Published
- 2009
26. Effect of chemical modifications caused by heat treatment on mechanical properties of Grevillea robusta wood
- Author
-
Stéphane Dumarçay, Francis Mburu, Philippe Gérardin, Jean-Francois Maurice Bocquet, Mathieu Pétrissans, Laboratoire d’Etude et de Recherche sur le Matériau Bois (LERMAB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech-Université Henri Poincaré - Nancy 1 (UHP), Moi University (MU), and Université Henri Poincaré - Nancy 1 (UHP)-AgroParisTech-Institut National de la Recherche Agronomique (INRA)
- Subjects
0106 biological sciences ,Polymers and Plastics ,Young's modulus ,01 natural sciences ,symbols.namesake ,Hydrolysis ,chemistry.chemical_compound ,010608 biotechnology ,Materials Chemistry ,Lignin ,HEAT TREATMENT ,[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering ,Char ,Composite material ,Inert gas ,Sugar ,ComputingMilieux_MISCELLANEOUS ,040101 forestry ,Grevillea robusta ,GREVILLEA ROBUSTA ,biology ,Chemistry ,04 agricultural and veterinary sciences ,DEGRADATION ,Condensed Matter Physics ,biology.organism_classification ,CHAR ,Mechanics of Materials ,symbols ,0401 agriculture, forestry, and fisheries ,Titration ,SUGAR CONTENT ,MECHANICAL PROPERTIES ,Nuclear chemistry - Abstract
International audience; Grevillea robusta, a Kenyan wood species of low durability was heat treated under inert atmosphere in laboratory conditions at temperatures between 220 and 250 degrees C. Modulus of rupture (MOR) and modulus of elasticity (MOE) were determined for different heat treatment conditions. MOR and MOE reduced with increase in heat treatment weight loss. MOE reduced insignificantly for weight loss less than 16% while reduction of MOR was more significant. For a fixed heat treatment temperature by varying the treatment duration, sugar content was analysed by HPLC after acidic hydrolysis and Mason lignin was determined. The amount of sugars other than glucose decreased with treatment time and was near zero after 7 h, while lignin quantity increased gradually. Wood acidity determined by titration decreased after heat treatment indicating degradation of uronic acids present in hemicelluloses. Chemical modifications of wood components were determined by CP/MAS C-13 NMR analysis. Spectra indicated significant degradation of hemicelluloses. Increase of treatment duration resulted in the appearance of new signals, particularly obvious on spectra of samples treated for 15 h, attributed to carbonaceous materials involved in char formation.
- Published
- 2008
27. Mistuning Phenomena on Bladed Disk: Industrial Methods and Applications
- Author
-
Ste´phane Baumhauer, Jean-Pierre Lombard, Je´roˆme Dupeux, Francois Maurice Garcin, and Christian Dupont
- Subjects
Engineering ,business.industry ,Probabilistic logic ,Structural engineering ,Sensitivity (control systems) ,Mistuning ,Amplification factor ,business ,Aeroelasticity ,Focus (optics) ,Stability (probability) ,Strain gauge - Abstract
This paper deals with the methods used at Snecma (SAFRAN Group) to simulate the real mistuned dynamic behavior of bladed disks. Many applications of the method on industrial cases are also presented. The dissymmetry of a real bladed disk, which is mainly generated by small deviations in its geometry, leads to different dynamic impedances of the blades. These variations in impedance cause significant amplification of the forced response of the bladed disk. We propose to focus on industrial methods that can be used to simulate the mistuned dynamic behavior of a bladed disk in the case of small “frequency mistuning” or of greater “large mistuning”. This method, based on the modal synthesis technique (Benfield and Hruda family), can be classified as a “first generation method”. The first originality of this method consists in taking into account major mistuning, such as that induced by an FOD event. A second innovation concerns the use of these methods to assess in probabilistic terms the correction factor to apply to the maximum dynamic level measured during engine certification tests. The first part of the paper relates to the proposed method and its validation for large-scale “shape” mistuning on an academic test case. In the second section, we present a number of industrial applications: • An application of “geometric mistuning” is presented on a bladed disk after an FOD event. The same kind of analysis as previously described is carried out and the numerical results are commented. • The mistuning analyses are carried out on an industrial blisk with a local defect. The sensitivity of the response amplification factor is calculated versus the mistuning rate using a probabilistic approach. • Another application of the mistuning strategy is discussed: it concerns the use of the mistuning method to specify the correction factor of partial dynamic strain gauge measurements in order to assess the maximum level of a bladed disk. • The last application is dedicated to the simulation of intentional mistuning to increase the aeroelastic stability of an industrial test case.Copyright © 2006 by ASME
- Published
- 2006
28. Experimental investigation on the transition to steady state of self‐oscillation of a thermoacoustic prime mover
- Author
-
Zhao, Bosen, primary, Jebali, Fathi, additional, and Francois, Maurice X., additional
- Published
- 1997
- Full Text
- View/download PDF
29. Analogy between the circular acoustic waveguide with axial temperature gradient and the electrical transmission line with source and loss
- Author
-
Zhao, Bosen, primary, Jebali, Fathi, additional, and Francois, Maurice X., additional
- Published
- 1997
- Full Text
- View/download PDF
30. Determination of source data for a thermoacoustic prime mover by the multiload method
- Author
-
Zhao, Bosen, primary, Jebali, Fathi, additional, and Francois, Maurice X., additional
- Published
- 1997
- Full Text
- View/download PDF
31. Characterization and Doping of Poly(Paraphenylene) Prepared By Catalyzed Electropolymerization
- Author
-
Michel-Alain Petit, Gerard Froyer, Francois Maurice, Abdelouafi Digua, Jean-Francois Fauvarque, and J. Y. Goblot
- Subjects
Materials science ,law ,Dc conductivity ,Doping ,Analytical chemistry ,Physical chemistry ,Electron paramagnetic resonance ,Characterization (materials science) ,Catalysis ,law.invention - Abstract
A new poly(paraphenylene) recently obtained by electropolymerization of dihalobenzene is described in terms of infra-red and UV-visible absorptions, electron paramagnetic resonance, DC conductivity of the pristine material. The first data on ASF5 doping are given. The properties of the electropolymer are compared to those of other poly(paraphenylene) synthesized by chemical methods.
- Published
- 1985
32. Article
- Author
-
G. Froyer, Francois Maurice, S. Krichene, Serge Lefrant, and Yvan Pelous
- Subjects
symbols.namesake ,Range (particle radiation) ,Excitation wavelength ,Materials science ,Raman band ,Doping ,General Engineering ,symbols ,Analytical chemistry ,Raman spectroscopy ,Raman scattering ,Spectral line - Abstract
Raman scattering results on polyparaphenylene samples prepared by two different methods are presented. The best spectra are obtained with an excitation wavelength in the U.V. range and the Raman bands are peaked at 1216 cm-1, 1276 cm-1 and 1598 cm-1 for λL = 334.8 nm. A comparison with Raman spectra induced by oligomers leads to a correlation between the intensity of the Raman band at ≈ 1220 cm-1 and the number of phenyl rings present in the studied material.
- Published
- 1983
33. ELECTROCHEMICAL OXIDATION AND REDUCTION OF POLYPARAPHENYLENE
- Author
-
Yvan Pelous, G. Froyer, and Francois Maurice
- Subjects
Materials science ,Inorganic chemistry ,General Engineering ,Electrochemistry ,Redox - Published
- 1983
34. Doping Kinetics and Structural Study of AsF5 Doped Polyparaphenylene
- Author
-
Gerard Froyer, Francois Maurice, Yvan Pelous, and J. Y. Goblot
- Subjects
Adsorption ,Materials science ,Diffusion ,Kinetics ,Doping ,Physical chemistry - Abstract
Kinetics of AsF5 doping on polyparaphenylene (PPP) powder synthesized by the Kovacic method (1) were carried out for different pressures and different temperatures. The results are explained in terms of physical adsorption on the high specific area of PPP and diffusion of ASF5 into PPP fibrils. Undoped regions and doped ones are seen by X-ray analysis depending on the doping level.
- Published
- 1985
35. Crystalline Structure and Morphology of Undoped and Asf5 Doped Polyparaphenylene
- Author
-
J. Y. Goblot, Gerard Froyer, Alain M. Boudet, Philippe Pradere, and Francois Maurice
- Subjects
Morphology (linguistics) ,Materials science ,Chemical engineering ,law ,Doping ,Nanotechnology ,sense organs ,Crystal structure ,Electron microscope ,law.invention - Abstract
The fibrous morphology and the crystalline structure of the fibres polyparaphenylene (PPP) are observed by electron microscopy and a comparison is made between the undoped and the doped material.
- Published
- 1985
36. Optical studies on poly(paraphenylene) thin film prepared by electroreduction
- Author
-
Jean-Francois Fauvarque, Michel-Alain Petit, Yvan Pelous, G. Froyer, Abdelouafi Digua, and Francois Maurice
- Subjects
Materials science ,Mechanics of Materials ,Infrared ,Phenylene ,Mechanical Engineering ,Doping ,Materials Chemistry ,Metals and Alloys ,Thin film ,Condensed Matter Physics ,Photochemistry ,Redox ,Electronic, Optical and Magnetic Materials - Abstract
The results of in situ spectroelectrochemical experiments on thin transparent films of poly( para phenylene) are presented in both oxidation and reduction domains. For reduction, the observed absorptions in the infrared and visible ranges account well for the theoretical predictions. In oxidation, even for a dilute doping level, our data lead to the conclusion that bipolarons are the only gap states involved in the process. Comparisons are established with other published data and theoretical calculations.
- Published
- 1987
37. Electron Paramagnetic Resonance IN AsF5 Doped Polyparaphenylene
- Author
-
A. Morisson, Francois Maurice, Gerard Froyer, J. Y. Goblot, and C. Fontaine
- Subjects
Spins ,Condensed matter physics ,Chemistry ,Diffusion ,Doping ,Analytical chemistry ,chemistry.chemical_element ,law.invention ,Magnetization ,symbols.namesake ,Pauli exclusion principle ,law ,symbols ,Electron paramagnetic resonance ,Spin (physics) ,Carbon - Abstract
Polyparaphenylene, PPP, has been polymerized from benzene, as described by Kovacic, and heavily doped in ASF5 vapour. The spin susceptibilities were about 10−6 emu/mole carbon for the Pauli part, plus one Curie spin per 1000 carbon atoms. The asymmetry of the EPR signal of pellets was found to be in good agreement with Dyson's theoretical predictions for slowly diffusive spins in the case of aged samples. On the other hand, the occurence of exchange interactions gave rise in freshly doped samples to enhanced magnetization diffusion rates, and then to more asymmetrical EPR lines.
- Published
- 1985
38. Very simple a-Si:H TFT fabrication process for LCD-TV application
- Author
-
Michel Le Contellec, Joseph Richard, François Richou, Bruno Vinouze, and Francois Maurice
- Subjects
Amorphous silicon ,Fabrication ,Materials science ,Liquid-crystal display ,business.industry ,Transistor ,Process (computing) ,Nanotechnology ,Hardware_PERFORMANCEANDRELIABILITY ,Condensed Matter Physics ,Oxide thin-film transistor ,Electronic, Optical and Magnetic Materials ,law.invention ,chemistry.chemical_compound ,chemistry ,Hardware_GENERAL ,Simple (abstract algebra) ,Thin-film transistor ,law ,Hardware_INTEGRATEDCIRCUITS ,Materials Chemistry ,Ceramics and Composites ,Optoelectronics ,business - Abstract
Amorphous silicon based thin film transistors for the driving of liquid crystal displays have been fabricated in a very simple way with only 2 photolithographic steps. The process for TFT and matrix elaboration are explained. The transistor electrical characteristics are shown to be compatible with LCD working conditions.
- Published
- 1987
39. Characterization and Vibrational Properties of Undoped and AsF5-Doped (C6H4)x
- Author
-
Y. Pelous, S Krichene, Serge Lefrant, Jean-Pierre Buisson, Francois Maurice, Gerard Froyer, J. Y. Goblot, and Claude Fabre
- Subjects
Wavelength ,symbols.namesake ,Ir absorption ,Materials science ,Doping ,symbols ,Analytical chemistry ,Thermal treatment ,Raman spectroscopy ,Characterization (materials science) - Abstract
A vibrational study of poly-p-phenylene (PPP) prepared by the Kovacic method is presented. A comparison is made between the vibrational features (in both IR and Raman) of undoped PPP, PPP chemically doped using AsF5 or electrochemically doped with AsF6 −, and finally dedoped by a thermal treatment. In the last case, using the exciting wavelength ΛL = 647.1 nm, additional modes are observed in the Raman spectra (460 cm−1, 920 cm−1 and 1700 cm−1). In AsF5 doped PPP, the IR absorption spectrum reveals also new modes (1552 cm−1, 1273 cm−1 and 1184 cm−1). These features are discussed in the basis of a vibrational model.
- Published
- 1985
40. The influence of spin on second sound in superfluid3He-4He mixtures
- Author
-
Lhuillier, Daniel and Francois, Maurice
- Abstract
The second-sound velocity of a superfluid mixture increases when a static and homogeneous magnetic field is applied. In particular, for dilute mixtures (molar
3 He concentration <0.1) and low temperatures, (0.12/u 2 ?5×10-16 Be 2 T-2 . It should be easily observed wheneverBe T-1 is larger than 105 G K-1 and can lead to a novel measurement of the magnetic susceptibility.- Published
- 1977
- Full Text
- View/download PDF
41. ORide: A Privacy-Preserving yet Accountable Ride-Hailing Service
- Author
-
Pham, Thi Van Anh, Dacosta Petrocelli, Italo Ivan, Endignoux, Guillaume Francois Maurice, Troncoso-Pastoriza, Juan Ramón, Huguenin, Kévin, and Hubaux, Jean-Pierre
- Subjects
ride-hailing service ,location privacy ,ComputerApplications_COMPUTERSINOTHERSYSTEMS - Abstract
In recent years, ride-hailing services (RHSs) have become increasingly popular, serving millions of users per day. Such systems, however, raise significant privacy concerns, because service providers are able to track the precise mobility patterns of all riders and drivers. In this paper, we propose ORide (Oblivious Ride), a privacy-preserving RHS based on somewhat-homomorphic encryption with optimizations such as ciphertext packing and transformed processing. With ORide, a service provider can support the matching of riders and drivers without learning their identities or location infor- mation. ORide offers riders with fairly large anonymity sets (e.g., several thousands), even in sparsely-populated areas. In addition, ORide supports key RHSs features such as easy payment, reputation scores, accountability, and retrieval of lost items. Using real data-sets consisting of millions of rides, we show that the computational and network overhead introduced by ORide is acceptable. For example, ORide only adds several milliseconds to ride-hailing operations and the extra driving distance for a driver is less than 0.5 km in more than 75% of the cases evaluated. In short, we show that a RHS can offer strong privacy guarantees to both riders and drivers while maintaining the convenience of its services.
42. Centro municipal de vehículos Ginebra-Suiza
- Author
-
Jean Pierre Dom and François Maurice
- Subjects
Architecture ,NA1-9428 ,Building construction ,TH1-9745 - Abstract
El conjunto erigido comprende tres edificios destinados, respectivamente, a albergar: «las dependencias de la administración», y «locales de servicio del Centro»; «el depósito de vehículos»; y «la inspección de vehículos», «repuestos» y «talleres mecánicos». Todos ellos modulados según un módulo de 5,875 m de lado. Desde el punto de vista de composición arquitectónica, este Centro refleja claramente, en los alzados exteriores, su carácter de construcción industrial sobria y robusta.
- Published
- 1969
- Full Text
- View/download PDF
43. Centro interprofesional en Ginebra Suiza
- Author
-
Jean Pierre Dom, François Maurice, E. Bourquin, G. Stencek, and Ingenieros Consulores Rigot - Barro - Rieben
- Subjects
Architecture ,NA1-9428 ,Building construction ,TH1-9745 - Abstract
Ha sido erigido este edificio de despachos para profesionales sobre una parcela, lindante con tres calles, que presenta un desnivel de alrededor de 10 m entre el punto más alto y más bajo de la misma. El inmueble se alza dejando una planta baja, diáfana, y creando una plaza ajardinada. El módulo empleado ha sido el de 1,65 metros. Las divisiones interiores son movibles y fácilmente adaptables a la retícula establecida, según necesidades de cada momento.
- Published
- 1968
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.