检索结果-南通市图书馆

Journal of Electrical Engineering 2014年第5期2卷 221-227页

作者： Dudley Anthony Williams jean-Francois marc Dorville Department of Physics Faculty of Science and Technology University of the West Indies Mona Campus Mona 1876 Jamaica

Tubular light pipes （i.e., solar tubes） are modern daylighting devices, which are designed to let confined interior spaces benefit from natural lighting. In tropical country, the use of sunlight for lighting is a major concern due to the heat associated with sunlight, which has the potential to increase the cost of cooling, thereby reducing the energy savings from the reduction in lighting load. To investigate the thermal and lighting performance of light pipes, a case study for a seminar room, in which light pipes are installed, is presented. Temperatures for the solar tube （dome and diffuser）, window and room were monitored continuously for 24 h periods. Results from the study indicate that the diffuser was on average 6.68 ~C higher than room temperature on a clear day between 7：00 a.m. and 4：00 p.m., while dome temperature was on average 4.45 ~C higher than diffuser＇s temperature during the same period. This large thermal gradient in the day between dome, diffuser and room can significantly increase the cost of maintaining thermal comfort of 25 ~C, in the room. Another finding was the phenomenon of light pipes acting as a heat pumping the night, because it extracts heat from the room during the night between 7：00 p.m. and 4：00 a.m. This occurred because dome temperature is always smaller than diffuser and room temperature in the night. Therefore, for energy savings to be realized from light pipes, thermal performance must be taken into consideration in the analysis of energy savings from light pipes.

关键词： Thermal tubular light pipe solar tube.

Nystatin-Neomycin-Polymyxin B Combination:Efficacy and Tolerance as 1st-Line Local Treatment of Infectious Vaginitis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Obstetrics and Gynecology 2014年第7期4卷 445-454页

作者： jean-marc Bohbot Patrice Sednaoui Francois Verriere Institut Alfred Fournier ParisFrance Laboratoire Innotech International ArcueilFrance

Objective: To evaluate the efficacy and tolerance of a local treatment combining two antibacterials and one antifungal in patients with a clinical presentation suggesting infectious vaginitis. Patients and methods: 169 patients presenting with clinical criteria for vaginitis were included in an open, multicenter trial. Vaginal samples were taken for microbiological analyses and a triple-combination product of nystatin, neomycin and polymyxin B was then started as local treatment, without waiting for the test results. The treatment was continued with the usual dosage (1 vaginal capsule at bedtime for 12 days) for vaginal infections in the scope of the combination product with approved labeling. A second vaginal sample was performed at the end of the treatment. The main efficacy criterion was the clinical success rate (cure or improvement of the clinical signs and symptoms) according to the ***: 93 patients were included in the efficacy population. Non-exclusively fungal vaginitis (strictly bacterial or bacterial + fungal) represented 31.2% of the cases. The clinical success rate was 97.8% according to the investigator and 95.7% according to the patients. The microbiological success rate was 81.3%, with no differences between etiologies (Candida spp., bacteria or both). The combination product was well-tolerated, despite the local inflammation before treatment. Discussion and conclusion: Given the etiological diversity of vaginitis, this trial supports the efficacy of a triple-combination product (nystatin, neomycin, polymyxin B) as a first-line local treatment of Candida, bacterial or mixed vaginitis.

关键词： Candidiasis Mixed Vaginitis Bacterial Vaginitis Nystatin Neomycin Polymyxin B Empirical Therapy

Endoscopic management of complications of chronic pancreatitis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2013年第42期19卷 7308-7315页

作者： jean-marc Dumonceau Carlos Macias-Gomez Division of Gastroenterology and Hepatology Geneva University Hospital1211 GenevaSwitzerland Gastrointestinal Endoscopy Unit Gastroenterology ServiceItalian Hospital1181 Buenos AiresArgentina

Pseudocysts and biliary obstructions will affect approximately one third of patients with chronic pancreatitis(CP).For CP-related,uncomplicated,pancreatic pseudocysts(PPC),endoscopy is the first-choice therapeutic *** advances have focused on endosonography-guided PPC transmural drainage,which tends to replace the conventional,duodenoscope-based coma immediately *** material is being tested to facilitate the endosonography-guided *** this review,the most adequate techniques depending on PPC characteristics are presented along with supporting *** CP-related biliary obstructions,endoscopy and surgery are valid therapeutic *** co-morbidities(e.g.,portal cavernoma)and expected patient compliance to repeat endoscopic procedures are important factors when selecting the most adapted *** should be reasonably ruled out before embarking on the endoscopic treatment of presumed CP-related biliary *** endoscopy,the gold standard technique consists of placing simultaneous,multiple,side-by-side,plastic stents for a oneyear *** covered self-expandable metal stents are challenging this method and have provided 50%mid-term success.

关键词： Biliary stricture Chronic pancreatitis Pseudocyst Endoscopic retrograde cholangio-pancreatography Endoscopic ultrasonography Stent

钴掺杂Sr1.5La0.5MnO4的合成及高温电化学性能研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

无机化学学报 2016年第10期32卷 1730-1738页

作者：范宇航孙丽萍霍丽华赵辉 jean-marc Bassat Aline Rougier Sebastien Fourcade jean-Claude Grenier 黑龙江大学化学化工与材料学院功能无机材料化学教育部重点实验室哈尔滨150080 CNRS Universite de Bordeaux ICMCB 87 avenue du Dr. A. Schweitzer F-33608 Pessac-Cedex France

采用EDTA-柠檬酸法合成了中温固体氧化物燃料电池阴极材料Sr_(1.5)La_(0.5)Mn_(1-x)Co_xO_4(SLMCOx),并利用粉末X射线衍射(XRD)、X射线光电子能谱(XPS)以及电化学交流阻抗谱(EIS)进行表征。结果表明,该材料与Ce0.9Gd0.1O1.95(CGO)在1 200℃烧结12 h不发生化学反应。随着Co掺入量的增加,氧化物中Mn^(3+)和Co^(2+)含量增多,晶格氧含量降低,晶格畸变率增大。交流阻抗谱(EIS)测试结果显示,钴的掺杂明显降低电极的极化电阻,其中Sr_(1.5)La_(0.5)Mn_(0.7)Co_(0.3)O_4阴极在700℃空气中的极化电阻为0.62Ω·cm^2,明显小于Sr_(1.5)La_(0.5)MnO_4阴极在750℃的极化电阻(1.5Ω·cm^2),表明钴掺杂的Sr_(1.5)La_(0.5)Mn_(1-x)CoxO_4是一种潜在的IT-SOFC阴极材料。

关键词：中温固体氧化物燃料电池阴极材料

Ontogeny of Drosophila melanogaster female sex-appeal and cuticular hydrocarbons

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Integrative Zoology 2010年第3期5卷 272-282页

作者： Marisa ARIENTI Claude ANTONY Claude WICKER-THOMAS jean-Paul DELBECQUE jean-marc JALLON University of Paris South 11 Center of Neurosciences of Paris SouthOrsayFrance Department of Biology Autonoma Metropolitan University-XochimilcoMexico DFMexico EMBL HeidelbergGermany LEGS CNRSGif sur YvetteFrance University of Bordeaux 1 Center of Integrative and Cognitive NeurosciencesTalenceFrance

The chemical communication system in Drosophila melanogaster Meigen,1830 plays a major role in courtship and consists of the male-specific cis-Vaccenyl acetate and sex-specific contact pheromones,cuticular hydrocarbons(CHC),which build up during ontogeny(first 4 days).They replace longer CHCs,common to both sexes and present only after the imaginal eclosion.A detailed quantitative description of the evolution of cuticular unsaturated hydrocarbons with age is presented here for males and females of different *** strains,which have been bred in well controlled *** appear in both sexes at around 12 h,before female *** present paper argues that this is likely linked to the switching on of a new set of ***,which is more abundant in females than in males during this critical period,might control this *** behavioral studies show that whereas female of all ages trigger early mature male courtship steps like wing vibration,only females older than 1 day trigger late courtship steps like attempted *** supports the hypothesis that late male courtship steps might be triggered by the CHCs,which build up after this age,especially female-specific(Z,Z)-7,11-and(Z,Z)-5,9-dienes.

关键词： contact pheromones Drosophila melanogaster ecdysone control ontogeny sex differences

COVID-19 and earlier pandemics,sepsis,and vaccines:A historical perspective

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Intensive Medicine 2021年第1期1卷 4-13页

作者： jean-marc Cavaillon marcin F.Osuchowski French National Research Agency(ANR) Paris 75012France Ludwig Boltzmann Institute for Experimental and Clinical Traumatology in the AUVA Research Center Vienna 1200Austria

Humanity has regularly faced the threat of epidemics and pandemics over the course of *** at-tempts to protect populations were initially made with the development of new vaccines,such as those against plague and cholera,under the leadership of the bacteriologist Waldemar *** have led to a complete eradication of smallpox and bovine plague and a major reduction in other infectious diseases including diphthe-ria,typhoid fever,poliomyelitis,and Haemophilus influenzae type B *** a few coronaviruses have been identified that seasonally infect humans causing mild symptoms,the emergence of a new zoonotic severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has rapidly triggered the ongoing coronavirus disease 2019(COVID-19)as a global pandemic responsible for widespread *** severe phenotypes of COVID-19 resemble a previous infectious threat that was initially designated as hospital fever and puerperal fever,presently known as sepsis.A SARS-CoV-2 infection has frequently been considered as a form of viral sepsis(owing to com-mon features with bacterial sepsis)but is also associated with an array of specific and unique *** progress in anti-SARS-CoV-2 vaccine development,in particular,the design of efficient messenger RNA(mRNA)and recombinant adenovirus vaccines,is crucial for curbing the pandemic.

关键词： Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) Coronavirus Sepsis Cytokines Hydroxychloroquine Vaccines Pandemics

100 GHz silicon–organic hybrid modulator

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2014年第1期3卷 196-199页

作者： Luca Alloatti Robert Palmer Sebastian Diebold Kai Philipp Pahl Baoquan Chen Raluca Dinu Maryse Fournier jean-marc Fedeli Thomas Zwick Wolfgang Freude Christian Koos Juerg Leuthold Institutes IPQ and IMT Karlsruhe Institute of Technology(KIT)76131 KarlsruheGermany Institute IHE Karlsruhe Institute of Technology(KIT)76131 KarlsruheGermany GigOptix Inc. BothellWAUSA CEA Leti38054 GrenobleFrance Institute of Photonic Systems Swiss Federal Institute of

Electro-optic modulation at frequencies of 100 GHz and beyond is important for photonic-electronic signal processing at the highest *** date,however,only a small number of devices exist that can operate up to this *** this study,we demonstrate that this frequency range can be addressed by nanophotonic,silicon-based *** exploit the ultrafast Pockels effect by using the silicon–organic hybrid(SOH)platform,which combines highly nonlinear organic molecules with silicon *** now,the bandwidth of these devices was limited by the losses of the radiofrequency(RF)signal and the RC(resistor-capacitor)time constant of the silicon *** RF losses are overcome by using a device as short as 500 μm,and the RC time constant is decreased by using a highly conductive electron accumulation layer and an improved gate *** this method,we demonstrate for the first time an integrated silicon modulator with a 3dB bandwidth at an operating frequency beyond 100 *** results clearly indicate that the RC time constant is not a fundamental speed limitation of SOH devices at these *** device has a voltage–length product of only V_(π)L=11 V mm,which compares favorably with the best silicon-photonic modulators available *** cladding materials with stronger nonlinearities,the voltage–length product is expected to improve by more than an order of magnitude.

关键词： 100GHz high-speed silicon modulator nanophotonics silicon–organic hybrid

Immunodetection of Tau microtubule-associated protein in human sperm and testis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2014年第6期16卷 927-928页

作者： Juiien Sigala Fanny Jumeau Marie-raure Caillet-Boudin Nicolas Sergeant Caroline Ballot jean-marc Rigot Franqois marcelli Meryem Tardivel Luc Buee Valerie Mitchell EA 4308 Gametogenese et Qualite du Gamete Institut de Biologie de la Reproduction-Spermiolegie-gECOS H(Spital Jeanne de Flandre Centre Hospitalier Regional Universitaire de Lille Lille France INSERM U837 Alzheimer et Tauopathies Place de Verdun Lille France Departement d'Andrologie Hopital Calmette Lille France BICeL Universite Lille Nord de France-Centre Hospitalier Regional Universitaire de Lille-IFR114 Lille France

Dear Editor, The cytosolic protein Tau is naturally present in human neurons, where it has a pivotal role in controlling microtubule stability. Hyperphosphorylation of Tau （observed during neurodegenerative diseases, such as Alzheimer＇s disease） impairs the protein＇s ability to bind microtubules. This results in microtubule disassembly and the formation of Tau aggregates, Tau protein is also widely expressed in peripheral tissues. In the male reproductive system, screening for Tau has focused solely on the rodent and bovine testis. In the present study, we used immunofluorescence and immunoenzymatic techniques （with a Tau-specific antibody） to investigate the presence of Tau protein in human ejaculated sperm and testicular tissue.

关键词： MANCHETTE

Reliability and Precision Are Optimal for Non-Uniform Distributions of Presynaptic Release Probability

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Biomedical Science and Engineering 2015年第3期8卷 170-183页

作者： jean-marc Fellous Nadia S. Corral-Frías Graduate Interdisciplinary Program in Neuroscience University of Arizona Tucson USA Department of Psychology and Applied Mathematics University of Arizona Tucson USA

Most conceptual and computational models assume that synaptic transmission is reliable, a simplification rarely substantiated by data. The functional consequences of the recruitment of high and low initial release probability synapses on the reliability and precision of their postsynaptic targets are studied in a multi-compartmental model of a hippocampal CA1 pyramidal cell. We show that changes in the firing rate of CA3 afferent inputs (rate remapping) are not reflected in the firing rate of the CA1 cell but in the reliability and precise timing of some of its action potentials, suggesting that a signature of remapping may be found in the precise spike timing of CA1. Our results suggest that about half of the action potentials produced by a CA1 cell can potentially carry reliable information in their precise timing with about 25 ms precision, a time scale on the order of the gamma cycle. We show further that reliable events were primarily elicited by CA3 synapses in a state of low probability of release. Overall, our results suggest that the non-uniform distribution of initial release probabilities observed experimentally achieves an optimum yielding simultaneously high precision and high reliability, and allows large populations of CA3 synapses to contribute to the production of reliable CA1 spiking events.

关键词： Spike Timing Hippocampus Computational Model Synapses

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

光谱消光法测量高压湿蒸汽的研究

动力工程 2009年第3期29卷 254-260,291页

作者：徐峰蔡小舒苏明旭任宽芳 jean marc Dorey 上海理工大学颗粒与两相流测量技术研究所上海200093 达姆施塔特工业大学流体力学和空气动力学研究所德国达姆施塔特64287 法国国家科研中心与鲁昂大学空间热化学联合研究所法国鲁昂76801 法国国家电力公司流体力学、发电和环境研究与发展中心法国夏都74801

在前人工作的基础上发展了光谱消光法在线测量技术,并将其应用于高压湿蒸汽两相流湿度和水滴尺寸分布的测量.在数据处理上,提出了改进的optimized regularization反演算法,该算法比以往的Phillip-Twomey-NNLS算法有更大的抗噪性、准确... 详细信息

在前人工作的基础上发展了光谱消光法在线测量技术,并将其应用于高压湿蒸汽两相流湿度和水滴尺寸分布的测量.在数据处理上,提出了改进的optimized regularization反演算法,该算法比以往的Phillip-Twomey-NNLS算法有更大的抗噪性、准确性和稳定性.还进行了标准颗粒测量实验和高压湿蒸汽在线测量实验.结果表明:通过增大测量区与接收光纤间距和减小接收光纤面积,可大大降低颗粒前向散射光(包括低浓度时的不相关单散射光和高浓度时的复散射光)对消光光谱的影响,从而保证了在高浓度情况下湿蒸汽测量的准确性.湿蒸汽实验结果表明:在高压状态下湿蒸汽中的水滴尺寸比低压汽轮机内湿蒸汽中的水滴小,并且分布也较窄,这也是核电高压汽轮机水蚀较少的原因之一.

关键词：核电汽轮机高压湿蒸汽光谱消光法测量高浓度