1,423 Hits in 1.3 sec

Thierry Chevaillier et Xavier Pons (dir.), « Les privatisations de l'éducation », Revue internationale d'éducation, n° 82

Anaïs Clerc-Bedouet
2020 Lectures  
Thierry Chevaillier et Xavier Pons (dir.), « Les privatisations de l’éducation », Revue internationale d’éducation , n° 82 Anaïs Clerc-Bedouet , 2020, 150 p., Sèvres, Ciep, ISBN : 9782854206258  ...  Haut de page Pour citer cet article Référence électronique Anaïs Clerc-Bedouet , « Thierry Chevaillier et Xavier Pons (dir.), « Les privatisations de l’éducation », Revue internationale d’éducation ,  ... 
doi:10.4000/lectures.42957 fatcat:sib2wgupkjgbbprgm5eea2jo7m

Comparative reactivity and mechanical properties of human isolated internal mammary and radial arteries

Philippe Chamiot-Clerc, Xavier Copie, Jean-François Renaud, Michel Safar, Xavier Girerd
1998 Cardiovascular Research  
Objective: The aim of this study was to analyse the arterial wall mechanics and the vasoreactive properties of the radial artery in comparison with those of the internal mammary artery and to discuss their implications for coronary bypass grafts. Methods: Measurements of pressure and diameter were obtained from cylindrical segments, whereas measurements of reactivity were obtained from ring segments from the same arteries. We used an echo-tracking technique of high resolution enabling to
more » ... gate, in vitro, the diameter and the wall thickness of arterial cylindrical segments. Furthermore, the compliance, distensibility and incremental elastic modulus of the Ž . radial and of the mammary arteries were determined for a wide range of transmural pressure 0-200 mmHg in presence and absence of Ž . norepinephrine NE . Results: Our results show that NE caused vasoconstriction of the two arteries. Strain was found significantly higher for the radial artery than for the internal mammary artery at any given value of stress both in the presence and in the absence of NE. In presence of NE, compliance for radial artery, in the overall transmural pressure range, did not change, whereas, distensibility was significantly increased and the elastic modulus was significantly decreased. Under the same conditions, the distensibility of the mammary artery tended to decrease and its elastic modulus to increase. In parallel, the vasoreactive properties of the two arteries confirmed the Ž previous results showing that radial artery developed a significant higher tension to vasoconstricting agents KCl, NE and phenylephrine Ž .. PHE and higher relaxation to isradipine than internal mammary artery. Moreover, radial artery displayed a lesser sensivity to sodium nitroprusside than internal mammary artery. Furthermore, sensitivity to NE was found to be 7-fold higher for radial artery than for internal mammary artery. Conclusion: Taken together, data on the mechanical and reactive properties of radial and internal mammary arteries show why the radial artery displayed a higher potential for spasm than the internal mammary artery and why the use of Ca 2q channel blocker can decrease the incidence of occlusion and spasm. q 1998 Elsevier Science B.V.
doi:10.1016/s0008-6363(97)00267-8 pmid:9659466 fatcat:435wr64ayzc7joxzjp43kkextu

Pose and Expression-Coherent Face Recovery in the Wild

Xavier P. Burgos-Artizzu, Joaquin Zepeda, Francois Le Clerc, Patrick Perez
2015 2015 IEEE International Conference on Computer Vision Workshop (ICCVW)  
We present a novel method to recover images of faces, particularly when large spatial regions of the face are unavailable due to data losses or occlusions. In contrast with previous work, we do not make assumptions on the data neither during training nor testing (such as assuming that the person was seen before or that all faces are perfectly aligned and have identical head pose, expression, etc.). Instead, we propose to tackle the problem in a purely unsupervised way, leveraging a large face
more » ... taset. During training, first we cluster faces based on their landmark's positions (obtained by an automatic face landmark estimator). Then, we model the face appearance for each group using sparse coding with learned dictionaries, with one dictionary per cluster. At test time, given a face to recover, we find its belonging cluster and occluded area and restore missing pixels by applying the group-specific sparse appearance representation learned during training. We show results on two "in the wild" datasets. Our method shows promising results on challenging faces and our sparse coding approach outperforms prior subspace learning techniques.
doi:10.1109/iccvw.2015.117 dblp:conf/iccvw/Burgos-ArtizzuZ15 fatcat:iyxhspzrqfhjlnr3pz22cwi6uu

First Metagenomic Survey of the Microbial Diversity in Bioaerosols Emitted in Waste Sorting Plants

Jodelle Degois, Frederic Clerc, Xavier Simon, Cyril Bontemps, Pierre Leblond, Philippe Duquenne
2017 Annals of Work Exposures and Health  
et al.. First metagenomic survey of the microbial diversity in bioaerosols emitted in waste sorting plants. Abstract Waste sorting activities are source of occupational bioaerosol exposures that are associated with several health disorders. New analytical tools, based on next generation sequencing (NGS) technologies, provide powerful methods to assess the microbial composition of bioaerosols. The objectives of the study were (1) to assess the feasibility and the repeatability of NGS based
more » ... ersity measurements and (2) to study the microbial biodiversity using NGS in bioaerosols emitted in a waste sorting plant (WSP). Three stationary parallel samples were collected in a sorting cabin using closed-face cassettes equipped with polycarbonate membranes. Bacterial and fungal diversity was assessed by sequencing 16S and 18S rDNA genes using either Illumina sequencing or 454 pyrosequencing methods. At sampling point, airborne bacteria were dominated by Proteobacteria, Firmicutes and Actinobacteria with prevailing genera assigned to unclassified Enterobacteriaceae, Staphylococcus, Acinetobacter, Leuconostoc, Pseudomonas and Lactobacillus. Airborne fungi were dominated by Ascomycota with prevailing genera assigned to Penicillium, Aspergillus, Rhizopus, 2 Wallemia and Hemicarpenteles. The NGS biodiversity measurements revealed a higher biodiversity bioaerosols that previously reported for WSP in studies carried out using culture methods followed by identification of microorganisms. These results provide the first survey about taxonomic biodiversity in bioaerosols from WSPs using high-throughput sequencing.
doi:10.1093/annweh/wxx075 pmid:29136413 fatcat:6bhrw5hppzawngmgicurkjcr3y

Quantification of Bias Related to the Extraction of DNA Directly from Soils

Åsa Frostegård, Sophie Courtois, Vincent Ramisse, Sylvie Clerc, Dominique Bernillon, Francoise Le Gall, Pascale Jeannin, Xavier Nesme, Pascal Simonet
1999 Applied and Environmental Microbiology  
The cassette containing the targeted region of S. lividans is described by Clerc-Bardin et al. (4) .  ... 
doi:10.1128/aem.65.12.5409-5420.1999 fatcat:giher4qz7bcurmrmr2idfwjkxi

Crack-Free Silicon-Nitride-on-Insulator Nonlinear Circuits for Continuum Generation in the C-Band

Houssein El Dirani, Marco Casale, Sebastien Kerdiles, Carole Socquet-Clerc, Xavier Letartre, Christelle Monat, Corrado Sciancalepore
2018 2018 IEEE Photonics Conference (IPC)  
Digital Object Identifier XX.XXXX/LPT.2017XXXXXXX Copyright (c) 2017 IEEE Houssein El Dirani, Marco Casale, Sébastien Kerdiles, Carole Socquet-Clerc, Xavier Letartre, Christelle Monat, and Corrado Sciancalepore  ...  Casale, S.Kerdiles, C.Socquet-Clerc and C.  ... 
doi:10.1109/ipcon.2018.8527140 fatcat:jdjngrjkprgwbndzmvxi2v4lya

Long-term results of valve replacement with the St. Jude Medical prosthesis

Eugene M. Baudet, Vincent Puel, John T. McBride, Jean-Philippe Grimaud, François Roques, Frederic Clerc, Xavier Roques, Nadine Laborde
1995 Journal of Thoracic and Cardiovascular Surgery  
To assess with truly long follow-up the long-term results of valve replacement with the St. Jude Medical prosthesis (St. Jude Medical, Inc., St. Paul, Minn.), we reviewed the case histories of the first 1112 patients undergoing 1244 valve replacements with this valve between June 12,1978, and June 12,1987:690 male (62%) and 422 female patients, mean age 56 years. A total of 773 patients (69%) had the aortic valve replaced, 207 (19%) the mitral valve, and 132 (12%) the aortic and mitral valves.
more » ... here were 42 hospital deaths (3.8%). Follow-up was 97.5% complete (8988 patient-years). There were 213 late deaths. Ninety-one (43%) were considered valve-related: sudden death, n = 27; anticoagulant-related hemorrhage, n = 22; thromboembolism, n = 19; prosthetic valve endocarditis, n = 13; valve thrombosis, n = 9; and noninfectious perivalvular leak, n = 1. Overall actuarial survival, including hospital mortality, was 68% -6% (95% confidence limits) 14 years after the operation. Linearized rates of late valve-related events were as follows: thromboembolism, 1.09% per patient-year; anticoagulant-related hemorrhage, 0.94% per patient-year; prosthetic valve endocarditis, 0.32% per patientyear; valve thrombosis, 0.33% per patient-year; and perivalvular leak, 0.19% per patient-year. Actuarial freedom, at 14 years, from thromboembolism was 89% -3%, anticoagulant-related hemorrhage 83% + 8%, valve thrombosis 97% + 1%, and reoperation 95% -+ 3%. Actuaria] freedom from all valve-related deaths and valverelated morbidity and mortality, at 14 years, was 84% + 6% and 61% -8%, respectively. We conclude that, because of its low thrombogenicity, low incidence of valve-related events, and low valve-related mortality, the St. Jude Medical valve is one of the best performing mechanical prosthesis currently available. Nevertheless, the late valverelated complications and deaths illustrate that the quest for a "perfect" prosthesis remains unfulfilled. (J THORAC CARDIOVASC SURG 1995;109:858-70)
doi:10.1016/s0022-5223(95)70309-8 pmid:7739245 fatcat:3uzib6chgvfvxexspimms4q5ni

Aryl Hydrocarbon Receptor–Dependent Induction of Liver Fibrosis by Dioxin

Stéphane Pierre, Aline Chevallier, Fatima Teixeira-Clerc, Ariane Ambolet-Camoit, Linh-Chi Bui, Anne-Sophie Bats, Jean-Christophe Fournet, Pedro Fernandez-Salguero, Martine Aggerbeck, Sophie Lotersztajn, Robert Barouki, Xavier Coumoul
2013 Toxicological Sciences  
The contribution of environmental pollutants to liver fibrosis is an important and poorly explored issue. In vitro studies suggest that the environmental pollutant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and other aryl hydrocarbon receptor (AhR) ligands induce several genes that are known to be upregulated during liver fibrosis. Our aim was to determine whether exposure to such pollutants can lead to liver fibrosis and to characterize the mechanisms of action. Mice were treated for 2, 14, or
more » ... 42 days, once a week with 25 µg/kg of TCDD. Gene and protein expression, in vitro and in vivo, as well as liver histology were investigated for each treatment. Treatment of mice with TCDD for 2 weeks modified the hepatic expression of markers of fibrosis such as collagen 1A1 and α-smooth muscle actin. This is not observed in AhR knockout mice. Following 6 weeks of treatment, histological features of murine hepatic fibrosis became apparent. In parallel, the levels of inflammatory cytokines (interleukin-1 beta, tumor necrosis factor α) and of markers of activated fibroblasts(fibroblast-specific protein 1) were found to be upregulated. Interestingly, we also found increased expression of genes of the TGF-β pathway and a concomitant decrease of miR-200a levels. Because the transcription factors of the Snail family were shown to be involved in liver fibrosis, we studied their regulation by TCDD. Two members of the Snail family were increased, whereas their negative targets, the epithelial marker E-cadherin and Claudin 1, were decreased. Further, the expression of mesenchymal markers was increased. Finally, we confirmed that Snai2 is a direct transcriptional target of TCDD in the human hepatocarcinoma cell line, HepG2. The AhR ligand, TCDD, induces hepatic fibrosis by directly regulating profibrotic pathways.
doi:10.1093/toxsci/kft236 pmid:24154488 fatcat:exsm6cmdhveo3e2rtursl4ifdm

Chronic Exposure to Low Doses of Dioxin Promotes Liver Fibrosis Development in the C57BL/6J Diet-Induced Obesity Mouse Model

Caroline Duval, Fatima Teixeira-Clerc, Alix F. Leblanc, Sothea Touch, Claude Emond, Michèle Guerre-Millo, Sophie Lotersztajn, Robert Barouki, Martine Aggerbeck, Xavier Coumoul
2017 Environmental Health Perspectives  
The results provide new evidence that environmental pollutants promote the development of liver fibrosis in obesity-related NAFLD in C57BL/6J mice. citatiOn: Duval C, Teixeira-Clerc F, Leblanc AF, Touch  ... 
doi:10.1289/ehp316 pmid:27713108 pmcid:PMC5332187 fatcat:jwjmgqqahfbjpewomb5be3wiiq

How organic farmers practice conservation agriculture in Europe

Joséphine Peigné, Marion Casagrande, Vincent Payet, Christophe David, F. Xavier Sans, José M. Blanco-Moreno, Julia Cooper, Kate Gascoyne, Daniele Antichi, Paolo Bàrberi, Federica Bigongiali, Andreas Surböck (+10 others)
2015 Renewable Agriculture and Food Systems  
AbstractThe interest of organic farmers in adopting conservation agriculture principles, including minimal soil disturbance, permanent soil cover and crop rotation has been growing since the early 2000s. However, currently there is no network for organic farmers practicing conservation agriculture, and a lack of knowledge on how organic farmers implement conservation agriculture in practice. Consequently, few technical references are available for organic farmers when they start applying
more » ... ation agriculture practices, in particular on controlling weeds without the use of herbicides. The main objectives of this study were: (1) to explore the diversity of conservation agriculture techniques (i.e., reduced tillage, no-tillage and green manures) practiced among European farmers, and (2) to identify farmers' main strategies for implementing conservation agriculture and the agronomic and environmental factors that determine these strategies. Strategies were identified by analyzing survey results on: (1) the type and degree of use of conservation agriculture practices by farmers, and (2) the effects it produces in terms of soil disturbance and soil cover (low, medium and high). We carried out a survey of 159 European organic farmers and collected 125 data sets on management of winter-sown crops. Among the conservation agriculture practices, reduced tillage was used by 89%, no-tillage by 27% and green manure by 74% of the 159 interviewed farmers. Green manures were more frequently used in northern Europe than in the south (below 45°N). Most of the farmers used crop rotations, with a mean duration of 6 years. A wide diversity of conservation agriculture practices were used, with farmers rarely using all three techniques (no-till, reduced till and green manures) within one system. The range of practices was grouped into five strategies ranging from intensive non-inversion tillage without soil cover to very innovative techniques with no-tillage and intercrops. The five strategies for conservation agriculture could be grouped into two larger categories based on weed control approach: (1) intensification of the mechanical work without soil inversion or (2) biological regulation of weeds with cover crops. The diversity of strategies identified in this study shows that organic farmers use innovative approaches to implement conservation agriculture without herbicides. This study's findings will help organic farmers to experiment with innovative practices based on conservation agriculture principles and also benefit conventional farmers who use conservation agriculture practices and would like to reduce or eliminate the use of herbicides.
doi:10.1017/s1742170514000477 fatcat:7ma5k545zvbp3ihj7b6z56uqtu

Page 511 of Revue Des Deux Mondes Vol. 9, Issue [page]

1875 Revue Des Deux Mondes  
. — « Par-devant maître Simon-Saturnin Boblique et son collègue soussignés, bredouillait le clerc, ont comparu : 1° dame Renée-Armande de Lencloître, veuve de Joseph-Xavier des Armoises, demeurant à Bay  ...  inter- rompit le clerc chargé de la collation, le voilà riche. — Peuh! riche! murmura l’expéditionnaire, cela dépend...  ... 

Page 278 of La Revue de Paris Vol. , Issue 6 [page]

1932 La Revue de Paris  
Une lecture, pourtant, dès cette date, mettait Pallu en contact avec le monde lointain des missions, c'était la Vie de Saint François-Xavier; en cet apôtre, il cherchait un modèle : il ie recommandait  ...  Ils se consolaient, j'allais dire qu'ils se revanchaient, en associant à leurs campagnes de prédi- cation, dans la banlieue de Paris, ou même dans les provinces, les jeunes clercs des Missions Étrangères  ... 

Xavier Boniface, Frédéric Vienne (dir.),« Histoire(s) du diocèse de Lille »

Frédéric Gugelot
2020 Archives de Sciences Sociales des Religions  
Son cardinalat (1930) marque le succès du clerc mais aussi de l'évêché. Xavier BONIFACE, Frédéric VIENNE (dir.),« Histoire(s) du diocèse de Lille », Revue du Nord, 33, 2016, 240 p.  ...  Xavier BONIFACE, Frédéric VIENNE (dir.),« Histoire(s) du diocèse de Lille » Revue du Nord, 33, 2016, 240 p.  ... 
doi:10.4000/assr.57202 fatcat:vmtnmg6bdrbfhgoeuoywraw4oq

Xavier Boniface, Jean Heuclin (dir.), Diocèses en guerre, 1914-1918. L'Église déchirée entre Gott mit uns et le Dieu des armées

Giovanni Cavagnini
2019 Archives de Sciences Sociales des Religions  
Giovanni Cavagnini RÉFÉRENCE Xavier BONIFACE, 1  ...  Afin de mieux en saisir les implications, les éditeurs ont divisé le texte en quatre parties : la première (« Clercs et fidèles face à l'adversité ») concerne les diocèses envahis et occupés par les Allemands  ... 
doi:10.4000/assr.48535 fatcat:vw4yreeqirajbow4dd5nvp5jgm

Page 603 of National Union Catalog Vol. 145, Issue [page]

1942 National Union Catalog  
Clerc, J. Bohec, A. Villejean, Ph. Navarre. Paris, Vigot fréres, 1933. 8 p. L, ;3;-628 p. incl. illus., tables, map. 23". 1 we eo 2.  ...  Hygiene, Public. os Contagion and contagious 3 cae Sees ae Clerc, Marcel, 1875- *Bohec, som, int, Villejean, André. rv. *Navarre, Phi: Mppe, 1882- v.  ... 
« Previous Showing results 1 — 15 out of 1,423 results