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Structure-Thermal Conductivity Tentative Correlation for Hybrid Aerogels Based on Nanofibrillated Cellulose-Mesoporous Silica Nanocomposite

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Journal of Renewable Materials 2018年第3期6卷 299-313页

作者： Dounia Bendahou Abdelkader Bendahou Bastien Seantier benedicte lebeau Yves Grohens Hamid Kaddami University of Southern Brittany Dupuy de Lôme Research InstituteFRE-CNRS 3744BP 9211656321 Lorient CedexFrance Cadi Ayyad University Faculty of Sciences and TechnologiesAvenue Abdelkrim ElkhattabiB.P.549MarrakechMorocco University of Upper Alsace Institute of Materials Science of Mulhouse(IS2M)68057 Mulhouse CedexFrance

Hybrid aerogels have been prepared by freeze-drying technique after mixing water dispersions of cellulose microfibers or cellulose nanofibers and silica(SiO2)of type SBA-15(2D-hexagonal).The prepared composites were characterized by different analysis techniques such as SEM,hot-filament,DMA,*** composites are compared to those previously prepared using nanozeolites(NZs)as mineral *** morphology studied by SEM indicated that both systems have different structures,i.e.,individual fibers for cellulose microfibers WP-based aerogels and films for nanofibrillated cellulose NFC-based ones....These differences seem to be driven by the charge of the particles,their aspect ratio and *** hybrid materials exhibit tunable thermal conductivity and mechanical *** thermal conductivity values range between^18 to 28 mW.m^-1.K^-1 and confirm the superinsulation ability of these fibrous *** on the thermal insulation properties and mechanical properties was shown by adjunction of mineral particles to both cellulose-based aerogels by reaching pore size lower than 100 *** significantly reduces the thermal conductivity of the hybrid aerogels as predicted by Knudsen et ***,the addition of mineral fillers to aerogels based on cellulose microfibers induced a significant increase in stiffness.

关键词： Aerogels cellulose microfibers WP TEMPO-oxidized NFC silica lyophilization porosity superinsulation mechanical properties

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Effect of Geogenic Lead on Fungal and Collembolan Communities in Garden Topsoil

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土壤圈：英文版 2018年第2期28卷 215-226页

作者： Sophie JOIMEL Hervé CAPIAUX Christophe SCHWARTZ Mickael HEDDE Thierry lebeau Cécile LE GUERN Johanne NAHMANI Céline PERNIN Sandrine SALMON Lucia SANTORUFO Béatrice BECHET Jérome CORTET Université de Lorraine Laboratoire Sols et Environnement UMR 1120 Vandceuvre-lès-Nancy 54500 (France) INRA Laboratoire Sols et Environnement UMR 1120 Vandceuvre-lès-Naney 54500 (France) UMR ECOSYS INRA AgroParisTech Universitè Paris-Saclay Thiverval-Grignon 78850 (France) Plateforme d'Analyse Moléculaire Biodiversitg-Environnement IUT Ggnie Biologique La Roche sur Yon 85035 (France) Institut de Recherche sur les Sciences et Techniques de la Ville (IRSTV) CNRff 2488 Ecole Centrale de Nantes 1 rue de la Noē Nantes 44321 (France) Laboratoire Plandtologie & Gdodynamique Nantes Faculté des Sciences et des Techniques 2 rue de la Houssinière Nantes 44322 (Franee) Bureau de Reeherches Gdologiques et Minières (BRGM) Regional Geological Survey Direction Régionale des Pays de la Loire 1 rue des Saumonières Nantes 44000 (France) UMR CEFE 5175 Universitd de Montpellier EPHE Université Paul-Valdry Montpellier Montpellier 34199 (France) Université Lille 1 EA 4515 Laboratoire Gdnie Civil & Géo Environnement Villeneuve D'Ascq 59655 (France) Musdum National d'Histoire Naturelle CNRS UMR 7179 4 Avenue du Petit-Chateau Brunoy 91800 (France) Department of Biology University of Naples Federico Ⅱ Via Cinthia Naples 80126 (Italy) French Institut of Science and Technology for Transport Development and Networks Water and Environment Laboratory Route de Bouaye Bouguenais 44344 (France)

Geogenic lead (Pb) is considered to be less bioavailable than anthropogenic Pb and exerts less effect on the soil fauna. However,Pb contamination in vegetables has been reported in the case of geogenic anomalies, even at moderate concentrations (around 170 mgkg^(-1)). In this study, we investigated collembolan communities using both taxonomic- and trait-based approaches and observed fungal communities to assess the effects of a moderate geogenic Pb anomaly on collembolans and fungi in an urban vegetable garden *** indicated that geogenic Pb indeed modified fungi communities and altered the functional structure of collembolan communities in garden soils. Although geogenic Pb presented low bioavailability, it affected soil fauna and vegetables similar to anthropogenic Pb.

关键词： functional diversity functional trait soil fauna soil food web vegetable garden urban soil

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Examination of Urinary Chlorpyrifos Biomarker Concentrations and Heart Rate in a Sample of US Children and Adolescents

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Occupational Diseases and Environmental Medicine 2020年第4期8卷 163-174页

作者： Alex lebeau Desirae Sutherland Marie Bourgeois Jeffrey Driver Raymond Harbison Center for Environmental and Occupational Risk Analysis and Management College of Public Health University of South Florida Tampa Florida USA

Objective: The purpose of the investigation is to determine if a relationship exists between heart rate and urinary biomarkers of chronic, subacute chlorpyrifos pesticide exposure in youth. Methods: Using 2001-2002 NHANES data, a sample of 1233 children ages 6 - 18 was grouped based on detection status of 3,5,6-trichloropyridinol (TCPy) in urine. Radial pulse and brachial pulse were recorded as measures of heart rate by physicians. T-tests and linear regression analyses were performed to test for associations between TCPy concentrations and heart rate. Results: None of the associations between TCPy levels and heart rate outcomes were found to be significant. Nonsignificant effects in the TCPy-detected groups included a slightly reduced heart rate in girls, as well as a slightly elevated heart rate in boys when compared to the undetected controls. Neither was there any significant observable difference in heart rate due to detection status in the sample overall. Conclusions: At this time, an effect on heart rate attributable to chronic, low-level chlorpyrifos exposure in youth cannot be determined. Children and adolescents detected did not demonstrate a substantial change in pulse measures when compared to controls. It is recommended that subsequent studies examine chlorpyrifos biomarkers as they may relate to other indicators of cardiovascular health.

关键词： Chlorpyrifos Organophosphates Pesticides Acetylcholinesterase Inhibitors TCPy Heart Rate Pulse Cardiovascular Exposure Urinary Metabolites Children Youth Adolescents

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What is Faculty of 1000 Medicine？

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Clinical oncology and cancer researeh 2011年第3期8卷 185-189页

作者： Boyle Helen Droz Jean Pierre Saramaki Outi Visakorpi Tapio Linton Kate Catto James Georg Stüssi lebeau Michelle Claude Bernard Lyon 1 University France France University of Tampere Finland Finland University of Sheffield UK UK University Hospital Zürich Switzerland Switzerland University of Chicago USA USA

Faculty of 1000 Medicine is a unique online service that helps you stay informed of high impact articles and access the opinions of global leaders in medicine.

关键词：学院医药在线服务

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Adhesion of Silica Particles on Thin Polymer Films Model of Flax Cell Wall

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Materials Sciences and Applications 2014年第13期5卷 953-965页

作者： Samia Mahouche-Chergui Yves Grohens Eric Balnois Bénédicte lebeau Yves Scudeller Laboratory of Materials Engineering of Brittany University of South Britany Morbihan France Mulhouse Materials Science Institute University of Haute Alsace Mulhouse France LGMPA University of Nantes-Polytechnic School France

The present work is focused on better understanding of the interfacial interactions of SBA-15 mesoporous silica particles with flax fibers. In order to overcome the inherent complexity of flax fiber surface composition we have prepared model polysaccharide surfaces representing the main component of the flax fibers, e.g. cellulose, polygalacturonic acid (PGUA), and xyloglucan (XG) with thicknesses of about 200 nm, 100 nm, and 110 nm, respectively. The ξ-potential measurements of both silica and polysaccharides were performed in aqueous solutions as a function of pH and ionic strength. ξ-potential, AFM and SEM results supported the important role of electrostatic interactions in the silica adsorption on polysaccharide surfaces, since silica adsorption increased remarkably with ionic strength. The adsorption density of the SBA-15 onto the various polysaccharides was Cellulose > PGUA > XG, and the maximum was observed at pH = 4. Urea used as hydrogen bonds breaker reduced significantly the adsorption of SBA-15 on the polysaccharide surfaces, which highlighted the significant contribution of hydrogen bonding in the adsorption process. It was observed that most adsorbed SBA-15 particles were resistant to ultrasonic washing, which revealed their strong irreversible adsorption. Finally, direct adsorption experiments on both raw and treated real flax fibers yielded results consistent with those of model surfaces showing the important role of the surface fibers treatments on the improvement of the interfacial adhesion of the silica particles with flax fibers. The remarkable affinity of the SBA-15 particles with treated flax fibers is encouraging to design superinsulators composites with tuneable mechanical performances.

关键词： Adhesion SBA-15 Mesoporous Silica Polysaccharides Model Surfaces Flax Fibers

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美系车怎么了?

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产品可靠性报告 2011年第12期30卷 120-121页

作者： Philip lebeau Michelle Krebs 美国全国广播公司财经频道美国*** 底特律汽车新闻协会

在过去三年的《消费者报告》可靠性测评中，福特与通用汽车虽然不及它们的亚洲竞争对手．但是也在逐渐缩小可靠性领域的距离。不过，今年众多福特和通用车型因为应用了最新技术而在可靠性上被绊倒，一年之内的新车型总是被一些问题所折... 详细信息

在过去三年的《消费者报告》可靠性测评中，福特与通用汽车虽然不及它们的亚洲竞争对手．但是也在逐渐缩小可靠性领域的距离。不过，今年众多福特和通用车型因为应用了最新技术而在可靠性上被绊倒，一年之内的新车型总是被一些问题所折磨，这就是福特与通用目前面临的问题。与此同时，在经历了2009～2010年的召回事件后，丰田将其产品质量标准又推进到了一个新高度，使其引领亚洲品牌继续在可靠性领域保持领先。

关键词：通用汽车产品质量标准 2010年可靠性竞争对手新车型消费者福特

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瘫痪的奥运冠军

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疯狂英语（新策略） 2019年第1期 12-14,63页

作者： lebeau 管福泉(译) 不详

克里斯蒂娜·沃格尔是一名自行车运动员,她曾经在世界级比赛中获得过11枚金牌。然而,在一次与另一名自行车运动员在科特布斯赛车场的混凝土轨道上进行全速训练时,她意外摔倒受伤。她的第七脊椎骨断裂,双腿也失去了知觉,从此瘫痪。27岁... 详细信息

克里斯蒂娜·沃格尔是一名自行车运动员,她曾经在世界级比赛中获得过11枚金牌。然而,在一次与另一名自行车运动员在科特布斯赛车场的混凝土轨道上进行全速训练时,她意外摔倒受伤。她的第七脊椎骨断裂,双腿也失去了知觉,从此瘫痪。27岁的她并没有因此消沉,而是选择在残疾领域来赢得她的第12枚金牌。

关键词：奥运冠军瘫痪自行车运动员克里斯蒂世界级混凝土赛车场金牌

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托卡马克吸收RF加热功率的一般特点

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国外核聚变与等离子体应用 1993年第5期 14-15页

作者： lebeau,D 李石金

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读出新世界

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新东方英语（中英文版） 2007年第9期 49-51页

作者： Mary lebeau 贾庆文

故事或许以"结尾"结束,但对于这位小读者来说,这只不过是个开始。教师的职责就是教书育人,正因为有了他们的帮助,学生才开始逐渐进步。

关键词：朗读读出女教师单词故事作品读者新世界小学老师头发

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Urogenital Trauma by Pelvic Impalement: A Case Reported at Bouake University Hospital

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Open Journal of Urology 2023年第2期13卷 64-72页

作者： N’Diamoi Akassimadou Kouassi Patrice Avion Koffi Dje Brice Aguia Edi Edmond Gowe Freddy Junior Zouan Dago Venance Alloka Sadia Kamara Roger lebeau Urology Department Bouaké University Hospital Bouaké Ivory Coast Urology Department Abidjan Cocody University Hospital Abidjan Ivory Coast General and Digestive Surgery Department Bouaké University Hospital Bouaké Ivory Coast

Urogenital impalement trauma is a particular form of penetrating trauma to the pelvis. They are rare, spectacular or dramatic because they can be responsible for serious vascular and/or visceral lesions. This study reports a case of hypogastric impalement in a 19-year-old young man that caused musculoaponeurotic and urogenital lesions. Emergency surgical exploration was carried out urgently by a multidisciplinary team.

关键词： Urogenital Trauma Impalement Emergency Surgery Cystorrhaphy

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