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High-resolution observations of prominence plume formation with the new vacuum solar telescope

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Research in Astronomy and Astrophysics 2021年第9期21卷 91-100页

作者： jian-Chao Xue jean-claude Vial Yang Su Hui Li Zhi Xu Ying-Na Su Tuan-Hui Zhou Zhen-Tong Li Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Institut d'strophysique Spatiale CNRS/UniversitéParis-SudUniversitéParis-SaclayBâtiment 12191405 Orsay CedexFrance Yunnan Observatories Chinese Academy of SciencesKunming 650216China

Prominence plumes are evacuated upflows that emerge from bubbles below prominences,whose formation mechanism is still *** we present a detailed study of plumes in a quiescent prominence using the high-resolution Hαfiltergrams at the line center as well as line wing at±0.4 A from the New Vacuum Solar *** of brightening,blue shifts,and turbulence at the fronts of plumes are found during their *** large plumes split at their heads and finger-shaped structures are formed between ***-shifted flows along the bubble-prominence interface are found before and during the plume *** observations are consistent with the hypothesis that prominence plumes are related to coupled Kelvin-Helmholtz and Rayleigh-Taylor(KH/RT)*** splittings and fingers are evidence of RT instability,and the flows may increase the growth rate of KH/RT ***,the significant turbulence at plume fronts may suggest that the RT instability is triggered by the plumes penetrating into the *** this scenario,extra mechanisms are necessary to drive the plumes.

关键词： instabilities methods:data analysis Sun:filaments,prominences

以创新为使命和路径:高等教育发展新趋势——对话欧洲教育与社会政策研究所所长让-克洛德·鲁阿诺-博巴兰教授

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世界教育信息 2024年第10期37卷 3-8页

作者：让-克洛德·鲁阿诺-博巴兰张力玮徐艳茹马宁法国国立工艺学院欧洲教育与社会政策研究所巴黎75010 教育部教育管理信息中心北京100816 中国科学院大学公共政策与管理学院北京100190 首都师范大学实验小学北京100044

进入21世纪以来,各国对高等教育的治理呈现新公共管理模式的特征。在内外部因素影响下,创新成为高等教育机构新的目标,以及主导机构行动的价值追求。在高等教育系统的演变和进化过程中,新型高等教育机构得以建立,而传统高等教育机构不... 详细信息

进入21世纪以来,各国对高等教育的治理呈现新公共管理模式的特征。在内外部因素影响下,创新成为高等教育机构新的目标,以及主导机构行动的价值追求。在高等教育系统的演变和进化过程中,新型高等教育机构得以建立,而传统高等教育机构不断转型发展。在此过程中,高等教育机构重点推进解决真实问题的、基于项目的学习,多学科的、融合设计思维的教学创新得到越来越多的应用。在各国对高等教育加强治理、高等教育机构发展演变、合作网络化和多层次化的背景下,尽管处于经费缩减、国际竞争、新的使命等多重压力和挑战下,高等教育机构仍然保持其作为学术机构的组织惯性和特性。

关键词：高等教育创新知识生产合作网络教学创新

Hepatitis C virus genotypes distribution and transmission risk factors in Luxembourg from 1991 to 2006

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World journal of Gastroenterology 2008年第8期14卷 1237-1243页

作者： Francois Roman Karin Hawotte Daniel Struck Anne-Marie Ternes jean-Yves Servais Vic Arendt Patrick Hoffman Robert Hemmer Thérèse Staub Carole Seguin-Devaux jean-claude Schmit Retrovirology Laboratory CRP-Santé 84 rue Val fleuri L-1526 Luxembourg Centre Hospitalier de Luxembourg 4 rue Barblé L-1210 Luxembourg Centre Pénitentiaire de Luxembourg UmKuelebierg L-5299 Schrassig Luxembourg Retrovirology Laboratory CRP-Santé 84 rue Val fleuri L-1526 Luxembourg Centre Hospitalier de Luxembourg 4 rue Barblé L-1210 Luxembourg

AIM： To analyze the Hepatitis C virus （HCV） genotype distribution and transmission risk factors in a population of unselected patients in Luxembourg.METHODS： Epidemiological information （gender, age and transmission risks） were collected from 802 patients newly diagnosed for hepatitis C and living in Luxembourg, among whom 228 patients referred from prison. Genotyping using 5＇noncoding （5＇NC） sequencing was performed. We compared categorical data using the Fisher＇s exact F-test and odds ratios （OR） were calculated for evaluating association of HCV genotype and risk factors.RESULTS： The sex ratio was predominantly male （2.2） and individuals aged less than 40 years represented 49.6% of the population. Genotype 1 was predominant （53.4%） followed by genotype 3 （33%）. Among risk factors, intravenous drug usage （IVDU） was the most frequently reported （71.4%） followed by medical-related transmission （17.6%） including haemophilia, transfusion recipients and other nosocomial reasons. Genotype 3 was significantly associated to IVDU （OR = 4.84, P 〈 0.0001） whereas genotype 1 was significantly associated with a medical procedure （OR = 2.42, P 〈 0.001）. The HCV genotype distribution from inmate patients differed significantly from the rest of the population （Chi-square test with four degrees of freedom, P 〈 0.0001） with a higher frequency of genotype 3 （46.5% vs 27.5%） and a lower frequency of genotype 1 and 4 （44.7% vs 56.8% and 5.3% vs 9.6%, respectively）. IVDU was nearly exclusively reported as a risk factor in prison.CONCLUSION： We report the first description of the HCV genotype distribution in Luxembourg. The repartition is similar to other European counties, with one of the highest European prevalence rates of genotype 3 （33%）. Since serology screening became available in 2992, IVDU remains the most common way of HCV transmission in Luxembourg.

关键词： Hepatitis C virus Genotypes Luxembourg Risk factors Substance abuse Prisons

Ontogeny of Drosophila melanogaster female sex-appeal and cuticular hydrocarbons

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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

Potential Use of Polyelectrolyte Multilayer thin Films in Vascular Tissue Engineering:Evaluation of the Viability and Adhesion of Endothelial Cells

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生物医学工程学杂志 2005年第S1期22卷 117-118页

作者： Cédric BOURA Halima KERDjOUDj Vanessa MOBY Pierre SCHAAj jean claude VOEGEL jean-Fran·ois STOLTZ Patrick MENU Mécanique et Ingénierie Cellulaire et Tissulaire LEMTA-UMR CNRS 7563Facultéde Médecine54505 Vandoeuvre-lès-NancyFrance Institut Charles Sadron(CNRS-ULP) UPR 22 CNRS67083 StrasbourgFrance INSERM U 595 Facultéde Médecine67085 StrasbourgFrance

1 Introduction A method in vascular tissue engineering to obtain hemocompatible synthetic prosthesis consist s to cover the luminal surface by a monolayer of endothelial cell s(ECs).Nevertheless,the surface of current prosthesi s does not favour the development of an ECs ***,a new versatile method of self2assembled archi2 tectures based on the alternate adsorption of polycations and polyanions has been developed to lead to the build2up of multilayered polyelectrolyte films(MPF).This new type of surface modification offers also large possibilities for varying the physico2chemical properties such as rough2 ness or surface charges,film thickness and viscoelastic properties.

关键词： Tissue Engineering thin Films viscoelastic properties surface modification tissue engineering endothelial cells method of type of

Short Term Use of Empagliflozin Does Not Improve Left Ventricular Function in Non-Diabetic Hypertensive Patients: Results from a Non-Randomised Controlled Trial

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World journal of Cardiovascular Diseases 2020年第8期10卷 563-571页

作者： Liliane Mfeukeu-Kuate jean-claude Katte Krystel Ebo jean claude Mbanya Eugene Sobngwi Department of Internal Medicine and Specialities Faculty of Medicine and Biomedical Sciences University of Yaoundé 1 Yaoundé Cameroon Cardiology Unit Yaoundé Central Hospital Yaoundé Cameroon National Obesity Center and Endocrinology and Metabolic Disease Unit Yaoundé Central Hospital Yaoundé Cameroon Laboratory of Molecular Medicine and Metabolism Biotechnology Center University of Yaoundé 1 Yaoundé Cameroon

Background: A selective inhibitor of sodium-glucose cotransporter 2 (SGLT2), empagliflozin, has demonstrated its effects in reducing cardiovascular mortality and hospitalization rates for heart failure in type 2 diabetes patients. However, the cardiac-intrinsic mechanism for this cardiovascular benefit has not been sufficiently studied. We therefore aimed to investigate the effect of empagliflozin on left ventricular function in a group of patients with grade I hypertension. Methods: We carried out a single-arm non-randomized clinical trial at the National Obesity Centre in Yaoundé over a period of 8 months (October 2016 to May 2017), where patients were assigned to receive 25 mg of empagliflozin once daily. Cardiac ultrasound, 24-hour ambulatory blood pressure measurement, resting electrocardiography and biological assessment were carried out at baseline and at the end of a 6-week treatment period with empagliflozin. The primary outcome was the improvement of the left ventricular relaxation evaluation criteria. Ethical approval was obtained from the Centre Regional Ethics Committee in Yaoundé, Cameroon. Results: A total of 11 patients were treated (median observation time, 6 weeks). We noted a non-significant improvement in the early lateral annular velocity from 9.7 [9.2 -

关键词： Empagliflozin Cardiovascular Mortality Mitral Velocity E’ ABPM ECG

Capacitive beam position monitors for the low-β beam of the Chinese ADS proton linac

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Chinese Physics C 2016年第2期40卷 89-95页

作者：张雍武军霞朱光宇贾欢薛纵横郑海谢宏明康新才何源李林 jean claude Denard Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China University of Chinese Academy of Sciences Beijing 100049 China University of Science and Technology of China Hefei 230022 China Institute of Microelectronics School of Physical Science and Technology Lanzhou University Lanzhou 730000 China Lanzhou Institute of Physics Chinese Academy of Space Technology Lanzhou 730000 China Consultant and Synchrotron SOLEIL Saint-Aubin France

Beam Position Monitors（BPMs） for the low-β beam of the Chinese Accelerator Driven Subcritical system（CADS） Proton linac are of the capacitive pick-up *** provide higher output signals than that of the inductive *** paper will describe the design and tests of the capacitive BPM system for the low-β proton linac,including the pick-ups,the test bench and the read-out *** tests done with an actual proton beam show a good agreement between the measurements and the simulations in the time domain.

关键词： beam position monitor low-β beam capacitance coupling strength linear accelerator

Effect of different deformation and annealing procedures on non-magnetic textured Cu_(60)Ni_(40) alloy substrates

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International journal of Minerals,Metallurgy and Materials 2018年第8期25卷 930-936页

作者： jin Cui Hong-li Suo jin-hua Wang jean-claude Grivel Lin Ma Chun-yan Li Yao-tang ji Shaheen Kausar Min Liu Yi Wang College of Materials Science and Engineering Beijing University of Technology Department of Energy Conversion and Storage Technical University of Denmark

In this work,a series of specimens was prepared by the casting *** cube-textured substrates were processed by heavy cold rolling and recrystallization annealing(i.e.,the rolling-assisted biaxially textured substrates(RABi TS) method).Both the rolling and the recrystallization texture in the alloy tapes were investigated by X-ray diffraction and electron back-scatter diffraction,*** results showed that a strong copper-type deformation texture was obtained in the heavy cold-rolled *** addition,the recrystallization annealing process was found to be very important for the texture transition in the Cu–Ni alloy *** cube texture content in the Cu60 Ni40 alloy substrates reached 99.7%(≤10°) after optimization of the cold-rolling procedure and the recrystallizing heat-treatment process,whereas the content of low-angle grain boundaries(from 2° to 10° misorientation) in the substrate reached 95.1%.

关键词： non-magnetic CuNi alloy substrates annealing cube texture

Exploring the Impact of Crisis and Trauma on the Mental Health and Psychological Well-Being of University Students in Northern Haiti

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International journal of Mental Health Promotion 2023年第2期25卷 173-191页

作者： Michael Galvin Guesly Michel Henri-claude Saintelmond Carolyn Lesorogol jean-François Trani Lora Iannotti Harvard University Cambridge02138USA Boston University Boston02215USA Centre de SantéMental de Morne Pelé Cap-Haïtien2697Haiti UniversitéPublique du Nord au Cap-Haïtien Cap-Haïtien2697Haiti Washington University in St.Louis St.Louis63130USA

In recent decades,Haiti has been subject to man-made and natural disasters that have left its citizens vulnerable to a range of *** a weak state unable to protect its populace,Haitians are exposed to some of the highest levels of poverty and violence in the Western *** recent years,Haitians have experienced two crises that this study analyzes:the instability and political violence of“peyi lòk”as well as the global pandemic of *** community-based assessment explores the impact of these two crises on the mental health and psychological well-being of 38 Haitian university students in the understudied northern part of the *** indicate that both crises had similarities related to their psychological effects on young people,most notably in terms of traumatic experiences related to threats or violence,forced confinement,and large increases in population-wide ***,the extreme violence of“peyi lòk”and the widespread unpredictability of COVID-19 and its effects in the early days of the pandemic resulted in high levels of stress and *** crises also resulted in extreme economic hardship for students,with many reporting difficulties accessing basic needs such as food and *** study highlights how converging population-level crises in“complex emergencies”can heighten trauma and compromise mental health.

关键词： Haiti crisis mental health psychological well-being coronavirus COVID-19