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Feasibility study of cosmic-ray componentsmeasurement by using a scintillating fiber tracker in space

第四届全国高聚物分子表征学术讨论会

作者： Aly franck Cliff Fan tA Instruments-China Shanghai 200001 tA Instruments-China Shanghai 200001

＜正＞ Waterborne coatings do not have a priori, the same advantageous rheological properties as solvent based coatings. If not formulated correctly, they are much inferior with regard to flow properties, leveling, application properties, film build, etc. In order to obtain the desired performance, thickeners and rheological modifiers are added to improve waterborne paints. Associative thickeners are low molecular weight, water soluble polymers like modified alkali swellable emulsions, and provide overall good performance to a waterborne coating. the crosslinking mechanisms of associative thickeners are addressed in this paper. Usually, the rheological characterization of coatings is usually done at a medium shear viscosity （MSV） 1-1000 s-1, high shear viscosity （HSV） 103 to 106 s-1 and low shear viscosity （LSV） 0.001 to 1 s-1, see Fig 1. Rheology has become a very important method to characterize paints and coatings. Rheology provides not only information about the storage stability and shelf life, the flow of the material during processing, for example, leveling and brush marks, but also about the performance during application, like roller application, and of the final coating （film building during drying and performance of the coating film）. Rheology has become a must for the formulation designer, who has to develop paints and coatings with well defined application and end-use properties

关键词： paint Coatings processing performance rheology viscosity impact resistance thixotropy yield stress associative thickener

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Radiation Detection technology and Methods 2021年第3期5卷 389-403页

作者： Jun-jing Wang Xin Wu Ming Xu Chiara Perrina Philipp Azzarello franck Cadoux Yannick Favre Daniel La Marra Bo-bing Wu Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Department of Nuclear and Particle Physics University of Geneva1211 Geneva 4Switzerland University of Chinese Academy of Sciences Beijing 100049China Institute of Physics École Polytechnique Fédérale de Lausanne(EPFL)1015LausanneSwitzerland

Purpose the application of traditional silicon strip detectors in space experiments often suffers from heat and power consumption limitations when a large area has to be ***,a scintillating fiber detector with SiPM readout was proposed and adopted by ground high-energy *** excellent performance in track measurement and mechanical flexibility makes it a prospective candidate for large-area tracking detectors in the next-generation space *** paper mainly focuses on its performance in cosmic-ray charge *** A fast Geant4 simulation for a single tracker module was developed and compared with the beam test *** non-uniformity of the detector response was ***,a full tracker simulation using a variety of typical cosmic ray nuclei was *** performance of a fiber tracker with multiple layers was *** and conclusion the comparison between the simulation results and the beam test data of protons and helium nuclei shows a good *** non-uniformity study reveals the strong dependence of the detector signal on the position and inclination angle of the incident ***,a corresponding correction algorithm was developed and applied in the following data *** preliminary result shows that the charge measurement capability of the fiber tracker composed of 9 XY superlayers is comparable to that of the AMS-02 inner tracker,which consists of 7 layers of double-sided silicon micro-strip *** paper discusses the feasibility of using fiber trackers to measure cosmic ray charges and provide a guide for the optimization of detector design.

关键词： Fiber tracker SiPM Charge measurement Cosmic-ray Simulation

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婴儿营养中的益生元

食品工业科技 2007年第5期28卷 40-42页

作者： OFIAFtI tienen Dr. Anne franck 比利时不详

一般来说,母乳喂养的婴儿比人工喂养的婴儿更不易患病和被感染,其原因之一是母乳中存在益生元低聚糖。众所周知,益生元低聚糖可以通过促进肠道内微生物菌群,如双歧杆菌和乳酸菌的生长和代谢能力而改善人体的健康状况。因此,许多科学实... 详细信息

一般来说,母乳喂养的婴儿比人工喂养的婴儿更不易患病和被感染,其原因之一是母乳中存在益生元低聚糖。众所周知,益生元低聚糖可以通过促进肠道内微生物菌群,如双歧杆菌和乳酸菌的生长和代谢能力而改善人体的健康状况。因此,许多科学实验致力于商业性益生元,如菊粉和低聚果糖,对婴儿在肠道耐受性、胃肠道健康、肠道功能,抗感染能力和免疫系统发育等方面的功效研究,我们将在下文中主要论述益生元对婴儿和儿童健康的改善作用。

关键词：益生元婴儿抗感染能力营养肠道健康母乳喂养微生物菌群人工喂养

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贝宁汉语教学现状调查分析及对策研究

贝宁汉语教学现状调查分析及对策研究

作者：富兰克（AKAYI franck-Arnaud t）四川师范大学

学位级别：硕士

语言是人类交流的主要手段。如今,随着全球化的发展,人们越来越迫切的需要掌握多种语言来适应社会的发展。掌握多种语言对于那些只会讲单一语言的人来说很有好处,因为有些语言具有重要的个性。比如,汉语在传播方面领先了世界上其他语言... 详细信息

语言是人类交流的主要手段。如今,随着全球化的发展,人们越来越迫切的需要掌握多种语言来适应社会的发展。掌握多种语言对于那些只会讲单一语言的人来说很有好处,因为有些语言具有重要的个性。比如,汉语在传播方面领先了世界上其他语言一步,并且融入了很多国家的教育体系。汉语教学自1989年贝宁中国文化中心成立开始,虽然在发展方面遇到了一些问题,但是在贝宁阿波美卡拉维大学孔子学院成立几年后,贝宁的汉语教学已经迈上了一个新台阶。文章通过文献研究调查问卷以及访谈等方式,对贝宁汉语教学情况进行了多角度的调查。文章第一章为绪论,主要交代了研究缘起及选题意义、对外汉语教学情况的研究,对非洲汉语教学与推广研究相关的文献、研究内容与研究方法。第二章主要对贝宁国家概况及汉语教学调查。第三章主要对贝宁汉语学习者学习状况调查及分析。第四章则根据贝宁汉语教学的基本情况系统地分析其中存在的问题。该地区汉语教学中的问题主要在于教学资源、汉语教师缺乏。第五章主要是以第四章提出的问题为基础,针对贝宁汉语教学中存在的不足,提出了解决汉语教学发展问题的思考与建议,如丰富教学资源和汉语学习资料,完善课程设置,增强师资力量的一些对策。

关键词：贝宁汉语教学现状调查教学对策

Predictive Study of Velocimetry in the Coronary Artery after Iodinated Contrast Agent Injection

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2017年第1期6卷 93-104页

作者： Nora Hocine Julie Colnot Helene Masset Didier franck Institut de Radioprotection et de Surete Nucleaire(IRSN) Fontenay-aux-RosesFrance Centre Hospitalier Universitaire Henri Mondor CreteilFrance

this study aims to determine the retention time of iodinated contrast agents (ICA) in the coronary artery. the mechanical aspect of ICA displacement was studied in order to better understand the effect of these products on the inner wall of the artery of patients with coronary artery stenosis, undergoing repeated imaging examinations with iodinated contrast agents. ICA flow, ICA and blood flow in the artery were modelled. the fluid was regarded to be viscous, incompressible and Newtonian. Blood flow was presumed to be unidirectional, laminar and unstationary. Iodine flow velocity and retention time were calculated using the Runge-Kutta 4th order method programmed in C++ and MatLab R2013a language. the results showed that for coronary artery Ct-scans, ICA retention time is 1 minute 40 seconds and for coronary arteriography it is between 2.41 and 3.61 seconds. the values calculated were compared to theoretical values and to clinical observations. the results enabled us to validate our model.

关键词： Coronary Artery Iodinated Contrast Agent Blood Flow

Performance of clinical signs and symptoms,rapid and reference laboratory diagnostic tests for diagnosis of human African trypanosomiasis by passive screening in Guinea:a prospective diagnostic accuracy study

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Infectious Diseases of Poverty 2023年第2期12卷 117-118页

作者： Oumou Camara Mamadou Camara Laura Cristina Falzon Hamidou Ilboudo Jacques Kaboré Charlie franck Alfred Compaoré Eric Maurice Fèvre Philippe Büscher Bruno Bucheton Veerle Lejon Programme National de Lutte contre la trypanosomiase Humaine Africaine Conakry Guinea International Livestock Research Institute Nairobi Kenya Institute of Infection Veterinary and Ecological Sciences University of Liverpool Liverpool UK Clinical Research Unit of Nanoro Institute for Health Science Research (IRSS) Ouagadougou Burkina Faso Vector-Borne Diseases and Biodiversity Unit International Research and Development Center on Livestock in Sub-Humid Areas (CIRDES) Bobo-Dioulasso Burkina Faso Unit of Research and training in Life and Earth Sciences University of Nazi Boni Bobo-Dioulasso Burkina Faso Department of Biomedical Sciences Institute of Tropical Medicine Antwerp Belgium UMR Intertryp IRD-CIRAD French National Research Institute for Sustainable Development (IRD) University of Montpellier Montpellier France

Background Passive diagnosis of human African trypanosomiasis(HAt)at the health facility level is a major component of HAt control in *** examined which clinical signs and symptoms are associated with HAt,and assessed the performance of selected clinical presentations,of rapid diagnostic tests(RDt),and of reference laboratory tests on dried blood spots(DBS)for diagnosing HAt in *** the study took place in 14 health facilities in Guinea,where 2345 clinical suspects were tested with RDts(HAt Sero-K-Set,rHAt Sero-Strip,and SD Bioline HAt).Seropositives underwent parasitological examination(reference test)to confirm HAt and their DBS were tested in indirect enzyme-linked immunoassay(ELISA)/trypanosoma brucei gambiense,trypanolysis,Loopamp trypanosoma brucei Detection kit(LAMP)and m18S quantitative PCR(qPCR).Multivariable regression analysis assessed association of clinical presentation with ***,specificity,positive and negative predictive values of key clinical presentations,of the RDts and of the DBS tests for HAt diagnosis were *** the HAt prevalence,as confirmed parasitologically,was 2.0%(48/2345,95%CI:1.5–2.7%).Odds ratios(OR)for HAt were increased for participants with swollen lymph nodes(OR=96.7,95%CI:20.7–452.0),important weight loss(OR=20.4,95%CI:7.05–58.9),severe itching(OR=45.9,95%CI:7.3–288.7)or motor disorders(OR=4.5,95%CI:0.89–22.5).Presence of at least one of these clinical presentations was 75.6%(95%CI:73.8–77.4%)specific and 97.9%(95%CI:88.9–99.9%)sensitive for *** Sero-K-Set,rHAt Sero-Strip,and SD Bioline HAt were respectively 97.5%(95%CI:96.8–98.1%),99.4%(95%CI:99.0–99.7%)and 97.9%(95%CI:97.2–98.4%)specific,and 100%(95%CI:92.5–100.0%),59.6%(95%CI:44.3–73.3%)and 93.8%(95%CI:82.8–98.7%)sensitive for *** RDt’s positive and negative predictive values ranged from 45.2–66.7%and 99.2–100%*** DBS tests had specificities≥92.9%.While LAMP and m18S qPCR sensitivities were below 50%,trypanolysis and E

关键词： Human African trypanosomiasis trypanosoma brucei gambiense Diagnosis Clinical Rapid diagnostic test Sensitivity Specificity Dried blood spot trypanolysis

Huge metastable axial strain in ultrathin heteroepitaxial vertically aligned nanowires

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Nano Research 2015年第6期8卷 1964-1974页

作者： Vivien Schuler Francisco Javier Bonilia Dominique Demaille Alessandro Coati Alina Vlad Yves Garreau Michele Sauvage-Simkin Anastasiia Novikova Emiliano Fonda Sarah Hidki Victor Etgens franck Vidal Yunlin Zheng Sorbonne Universites UPMC Institut des NonoSciences de Paris 4 place Jussieu Paris 75005 France CNRS UMR7588 Institut des NanoSciences de Paris 4 place Jussieu Paris 75005 France Synchrotron Soleil L'Orme des Merisiers Saint-Aubin BP 48 91192 Gif-sur-Yvette Cedex France Universite Paris Diderot Sorbonne Paris Cite MPO UMR 7162 CNRS Batiment Condorcet Case courrier 7021 75205 Paris Cedex 13 France Universite de Versailles Saint-Quentin en Yvelines 55 Av. de Paris Versailles 78035 France

Strain engineering is a powerful tool to tailor the physical properties of materials coherently stacked in an epitaxial heterostructure. Such an approach, applied to the mature field of planar heteroepitaxy, has yielded a variety of new phenomena and devices. Recently, heteroepitaxial vertically aligned nanocomposites have emerged as alternatives to planar structures. Owing to the peculiar geometry of such nanoarchitectures, efficient strain control can be achieved, opening the way to novel functionalities. In this paper, we report a very large tensile axial strain in epitaxial transition metal nanowires embedded in an oxide matrix. We show that axial strains in excess of 1.5% can be sustained over a large thickness （a few hundred nanometers） in epitaxial nanowires having ultrasmall diameters （-3-6 nm）. the axial strain depends on the diameter of the nanowires, reflecting its epitaxial nature and the balance of interface and elastic energies. Furthermore, it is experimentally shown that such strain is metastable, in agreement with the calculations performed in the framework of the Frenkel-Kontorova model. the diameter dependence and metastability provide effective ways to control the strain, an appealing feature for the design of functional nanoarchitectures.

关键词： self-assembly heteroepitaxy nanowires strain

单层Ⅳ族单卤化合物二维铁电性体系应变和氢效应的第一性原理研究

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单层Ⅳ族单卤化合物二维铁电性体系应变和氢效应的第一性原理研究

作者： KENMOGNE NDJOKO MAURICE franck 华南理工大学

学位级别：硕士

回顾人类漫长的历史,不难发现,科技的每一次重大突破都是随着新的先进材料的进步而实现的。社会文明的快速发展与新材料的出现密切相关。铁性材料是一类具有自发极化状态的材料,包括传统的铁磁性和铁电性,在现代信息产业和数据存储应用... 详细信息

回顾人类漫长的历史,不难发现,科技的每一次重大突破都是随着新的先进材料的进步而实现的。社会文明的快速发展与新材料的出现密切相关。铁性材料是一类具有自发极化状态的材料,包括传统的铁磁性和铁电性,在现代信息产业和数据存储应用中发挥着重要作用。为了满足日益增长的电子产品需求,人们迫切希望实现功耗低、数据密度高、运行速度快的非易失性器件。然而,下一代纳米级信息存储器件的应用对铁性材料提出了更高的要求。在过去十年中,石墨烯的兴起导致了二维(2D)材料研究的爆炸。特别是,低维系统中固有铁磁性和铁电性的出现引起了巨大的关注,为实现具有优异性能的电子设备提供了潜在的平台。为此,本文以二维材料的本征铁电性及其氢杂质污染对其可能的影响为研究内容,结合第一性原理计算和理论分析方法,重点研究了应变对二维材料铁电性质的影响和调控。除上述研究外,通过铁电性质和合适的带隙的评估,一些二维铁电材料已被确定为很有前途的铁电光伏材料。此外,我们还研究了氢杂质对二维材料的影响,找出了它们最稳定的位置、形成能、对自发极化的影响以及电子性质。在第一章中,我们简要回顾了铁电性在纳米尺度上的理论局限和限制。本章重点介绍了在二维系统中发现铁电鲁棒性的最新进展。在本章的最后,总结了本文的研究目标和内容。第二章采用理论研究方法。主题包括第一原理计算基础、密度泛函理论、Berry相方法和VASP计算软件包。在第三章中,我们讨论了单层Ⅳ族单卤代化合物MX材料的面内铁电性。我们证实,与其他2D铁电材料相比,这些单分子膜具有更大的极化。并发现GeS在单分子膜MX中具有最高的面内极化值,因此,可以实现更宽的存储窗口并增强基于FeFEt的存储器的保持时间与可以促进纳米铁电器件的应用。而SnSe具有最小的面内极化,这是由于原子类型之间的最小电子亲和力不同。更重要的是,Sn和Se原子之间相对于顺电状态的最小位移。此外,GeSe、Gete和GeS在压缩应变达到-5%时不会发生转变,因此在器件应用中有很好的性能。在第四章中,我们利用基于密度泛函理论(DFt)的第一性原理方法研究了单分子膜Snte和SnS中氢杂质的影响。首先,我们研究了H原子和分子在单层Snte和SnS中的可能稳定位置。有趣的是,我们的结果显示,最稳定的氢构型是在分子中,而不是在单层Snte和SnS的原子氢系统中。此外,通过研究改性前后单层Snte和SnS上吸附的氢分子的几何结构、稳定性、电子性质以及对极化的影响,揭示了单层体系中氢分子的吸收特性。研究表明,氢分子以较小的形成能和较长的吸附距离物理吸附在原始单层Snte和SnS上。此外,结果表明,氢分子对单层Snte和SnS的极化和电子结构影响不大。在最后一章中,我们总结了本文的主要结论,并提出了可以进一步探索的潜在研究方向,旨在促进基于二维铁电材料的功能器件的实际应用,为材料开发提供新的思路。

关键词：二维材料应变铁电性氢效应第一性原理计算

Knowledge, attitudes and practices with regard to the presence, transmission, impact, and control of cystic echinococcosis in Sidi Kacem Province, Morocco

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Infectious Diseases of Poverty 2015年第1期4卷 399-410页

作者： Ikhlass El Berbri Marie J.Ducrotoy Anne-Françoise Petavy Ouaffa Fassifihri Alexra PShaw Mohammed Bouslikhane franck Boue Susan C.Welburn Allal Dakkak Department of Pathology and Veterinary Public Health Institut Agronomique et Vétérinaire Hassan IIBP:6202RabatMorocco Department of Parasitology and Medical Mycology Lyon 1 University8 Avenue Rochefeller69373 Lyon Cedex 08France Division of Infection and Pathway Medicine School of Biomedical SciencesCollege of Medicine and Veterinary MedicineThe University of EdinburghChancellor’s Building49 Little France CrescentEdinburgh EH164SBUnited Kingdom Avia-GIS Risschotlei 33B-2980 ZoerselBelgium ANSES Laboratoire de la rage et de la faune sauvage de NancyLaboratoire national de référence pour Echinococcus spp54220 Malzéville cedexFrance

Background:this study is a component of a large research project on five major neglected zoonotic diseases(NZDs)including cystic echinococcosis and was undertaken in the Province of Sidi Kacem over a period of four years(April 2009-March 2013).Methods:Questionnaires were administered at community level in a total of 27 communes and visits were made to all of the 10 abattoirs situated in the Province,to collect qualitative data on determinants of transmission for disease in humans and *** specifically,community knowledge,attitudes and practices related to cystic echinococcosis were assessed,as well as the extent to which local customs and behaviours may promote *** infrastructure and practices,and their role in perpetuating disease transmission were also critically ***:the results show that only 50%of people have heard of the disease,and of those,only 21%are aware of the dog’s role in disease ***-seven per cent of respondents stated that dogs are fed ruminant organs deemed unfit for human *** dogs have access to the family home,including the kitchen,in 39%of *** extent of this close proximity between humans and animals is even more pertinent when one considers that dogs are omnipresent in the community,with an average of 1.8 dogs owned per *** unrestricted access of dogs to abattoirs is a huge issue,which further promotes disease ***:this study would suggest that the high prevalence of cystic echinococcosis in humans and animals in Morocco is largely due to three factors:1)abundance of dogs 2)engagement in risky behaviour of the local population and 3)poor abattoir infrastructure and *** has serious implications in terms of the socio-economic impact of the disease,especially for rural poor communities.

关键词： Attitudes Cystic echinococcosis Knowledge Morocco transmission factors Practices