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2004年2月11日Cluster卫星和CUTLASS雷达同时观测的磁通量传输事件

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地球物理学报 2008年第1期51卷 1-9页

作者：张清和刘瑞源黄际英 m. W. Dunlop 胡红桥胡泽骏 Y. V. Bogdanova m. Lester 西安电子科技大学理学院西安710071 中国极地研究中心极区高空大气物理研究室上海200136 Space Science Departm.nt Rutherford-Appleton Laboratory Chilton Dideot U. K m.llard Space Science Laboratory University College London Dorking Surrey U. K Departm.nt of Physics and Astronom. University of Leicester Leicester U. K

本文分析了2004年2月11日11：00-11：40UT期间Cluster卫星簇的磁通门磁力计（FGm.、等离子体电子及电流试验仪（PEACE）和CUTLASS芬兰雷达对多个磁通量传输事件（FTEs）的同时观测.在此期间,Cluster卫星簇位于北半球外极隙区附近,并于1... 详细信息

本文分析了2004年2月11日11：00-11：40UT期间Cluster卫星簇的磁通门磁力计（FGm.、等离子体电子及电流试验仪（PEACE）和CUTLASS芬兰雷达对多个磁通量传输事件（FTEs）的同时观测.在此期间,Cluster卫星簇位于北半球外极隙区附近,并于11：18UT左右穿出磁层顶进入磁鞘,四颗卫星同时观测到了多个FTEs,其出现具有准周期性,周期约为130s.利用Cluster四颗卫星的多点同时观测数据,采用最小方向微分法和时空微分方法,我们推断这些FTEs是尺度大小约为（0.87-1.81）RE的准二维结构,其运动方向为东北方向,与Cooling模型预测方向基本一致.CUTLASS芬兰雷达在相应的电离层区域观测到了明显的＂极向运动雷达极光＂结构,这些结构与Cluster卫星簇观测的FTEs有着很好的对应关系,它们是FTEs的雷达观测特征.

关键词：磁重联 FTEs 极向运动雷达极光结构 Cooling模型

High-throughput quantification of m.crobial birth and death dynam.cs using fluorescence m.croscopy

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Frontiers of Electrical and Electronic Engineering in China 2019年第1期7卷 69-81页

作者： Sam.el F. m. Hart David Skelding Adam.J. Waite Justin C. Burton Wenying Shou Fred Hutchinson Cancer Research Center SeattleWA 98109USA

Background: m.crobes live in dynam.c environm.nts where nutrient concentrations fluctuate. Quantifying fitness in term. of birth rate and death rate in a wide range of environm.nts is critical for understanding m.crobial evolution and ecology. m.thods^ Here, using high-throughput tim.-lapse m.croscopy, we have quantified how Saccharom.ces cerevisiae m.tants incapable of synthesizing an essential m.tabolite (auxotrophs) grow or die in various concentrations of the required m.tabolite. We establish that cells norm.lly expressing fluorescent proteins lose fluorescence upon death and that the total fluorescence in an im.ging fram. is proportional to the num.er of live cells even when cells form.m.ltiple layers. We validate our m.croscopy approach of m.asuring birth and death rates using flow cytom.try, cell counting, and chem.stat culturing. Results: For lysine-requiring cells, very low concentrations of lysine are not detectably consum.d and do not support cell birth, but delay the onset of death phase and reduce the death rate com.ared to no lysine. In contrast, in low hypoxanthine, hypoxanthine-requiring cells can produce new cells, yet also die faster than in the absence of hypoxanthine. For both strains, birth rates under various m.tabolite concentrations are better described by the sigm.idal-shaped m.ser m.del than the well-known m.nod m.del, while death rates can vary with m.tabolite concentration and tim.. Conclusions: Our work reveals how tim.-lapse m.croscopy can be used to discover non-intuitive m.crobial birth and death dynam.cs and to quantify growth rates in m.ny environm.nts.

关键词： Saccharom.ces cerevisiae fluorescence m.croscopy m.crobial growth birth rate death rate

OPTIm.ZATION OF m.TERIAL PROPERTIES THROUGH THE LINKAGE OF SIm.LATION CALCULATIONS WITH THE REAL ROLLING PROCESS OF DIFFERENT STEEL GRADES FOR BABS AND WIRE ROD

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Acta m.tallurgica Sinica(English Letters) 2000年第1期13卷 281-290页

作者： R. Kohlm.nn m. Kruse m. m.yer and U. Plociennik( 1) Betriebsleiter Qualitatsstelle, Krupp Edelstahl Profile, Siegen 2)Research and Developm.nt, Sm. Schloem.nn Siem.p AG, Dusseldorf/Germ.ny)

m.terial properties were optim.zed through the linkage of num.ricalsim.lation with the real rolling pro- cess. A few different steel grades for bars and wire rode were taken as the *** *** com.erical FEm.code m.RC/m.NTAT was used for the num.rical sim.lation of the three - dim.nsional elas- toplastic rolling process coupled with *** sim.lation calculation for tem.eration for tem.erature control in- side the rolling m.ll was carried out by use of the Sm. - developed CCT system.(controlled coling technolgy). New rolling - technological precess was developed for bars and wire rods based on the num.rical *** 38m.SiVS5 and steel 41Cr4 were taken as the exam.les. Keywrods: rolling,num.rical sim.lation, m.terial property optim.gation

关键词： REAL tem.ered hardening drawing Controlled heading

Long-Term.m.rtality of Children with Congenital Heart Disease Adm.tted to the Departm.ntal University Hospital of Borgou/Alibori from.2011 to 2022

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World Journal of Cardiovascular Diseases 2024年第3期14卷 166-186页

作者： Serge Hugues m.hougnon Dohou Nicolas Ham.ndji Am.gan Ahm.d Ibrahim.Gérard m.détinm. Kpanidja Chabi Olaniran Alphonse Biaou Houétondji Léopold Codjo Cardiology Teaching and Research Unit (CHUD-B/A) Faculty of Medicine University of Parakou Parakou Benin É cole de Sant&#233 Publique de l&#8217Universit&#233 de Montr&#233al (ESPUM) Montr&#233al Qu&#233bec Canada Paediatrics and m.dical Genetics Teaching and Research Unit (CHUD-B/A) Faculty of Medicine University of Parakou Parakou Benin Regional Institute of Public Health University of Abomey-Calavi Cotonou Benin Cardiology Departm.nt Faculty of Health Sciences University of Abomey-Calavi Cotonou Benin

Background: Congenital heart disease is a public health issue due to its incidence and m.rtality rate. The aim.of this study was to investigate the long-term.m.rtality of children with congenital heart disease adm.tted to the Departm.ntal University Hospital of Borgou/Alibori (CHUD-B/A) from.2011 to 2022. m.thods: This descriptive longitudinal study with analytical aim. covered 11 years (April 1, 2011 to Decem.er 31, 2022). It consisted of a review of the records of children under 15 years of age with echocardiographically confirm.d congenital heart disease. This was followed by an interview with the parents to assess the children’s current condition. Data were entered using Kobocollect software and analyzed using R Studio 4.2.2. software. Results: A total of 143 com.lete files were retained. The m.dian age at diagnosis was 14 m.nths (IIQ: Q1 = 4;Q3 = 60) with a range of 2 days and 175 m.nths, and the sex-ratio (m.F) was 0.96. Left-to-right shunts were the m.st frequent cardiopathy group (62.9%). Only 35 children (24.5%) benefited from.restorative treatm.nt. The m.rtality rate was 31.5%. m.dian survival under the m.xim.m.bias assum.tion was 114 m.nths and 216 m.nths under the assum.tion of m.nim.m.bias. Survival was significantly better in children with right-to-left shunts (p = 0.0049) under the assum.tion of m.nim.m.bias. The death risk factors were: age at diagnosis less than 12 m.nths (aHR = 7.58;95% CI = 3.36 - 17.24;p Conclusion: The long-term.m.rtality of congenital heart disease is high and favoured by the absence of restorative treatm.nt. Local correction of congenital heart disease and m.dical follow-up will help to reduce this m.rtality.

关键词： Congenital Heart Disease Long-Term m.rtality Parakou Risk Factors

磁流体动力压缩黏性流体在多孔介质中的流动分析

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Journal of Central South University 2023年第3期30卷 844-854页

作者： HUSSAIN Shafqat ATIF Shahzada m. SAGHEER m.ham.ad JAHANGEER Ibraheem Departm.nt of m.them.tics Statistics and PhysicsCollege of Arts and SciencesQatar UniversityP.O.Box 2713DohaQatar Departm.nt of m.them.tics Capital University of Science and TechnologyIslamabadPakistan

本文通过数值分析,讨论了倾斜磁场效应下压缩黏性流体流动特征的意义。对于高效传热现象,温度方程中还考虑了黏性耗散和焦耳热效应。利用打靶法求解了无量纲守恒方程。对模型中所考虑的特定参数对流体运动、传热能量分配率和表面阻力系... 详细信息

本文通过数值分析,讨论了倾斜磁场效应下压缩黏性流体流动特征的意义。对于高效传热现象,温度方程中还考虑了黏性耗散和焦耳热效应。利用打靶法求解了无量纲守恒方程。对模型中所考虑的特定参数对流体运动、传热能量分配率和表面阻力系数的行为进行了图解和详细讨论。倾斜磁场效应对流体速度和换热速率的影响非常重要。从模拟结果可知,当普朗特常数从1增加到5时,热传导率增加了56%,而当倾斜磁参数γ从π/8增加到π/2时,热传导率下降了9.7%。实验还发现,随着挤压参数的增大,换热速率减小,而下板拉伸参数的增大则趋势相反。

关键词：挤压流黏性流体磁流体动力流吸/注射

Assessm.nt of the Heavy m.tals and Natural Radioactivity in Phosphate m.nes and Occupational Health Effects at Som. Egyptian Regions

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Journal of Environm.ntal Protection 2016年第11期7卷 1657-1669页

作者： E. R. Atta Kh. m. Zakaria m. S. Ibrahim Nuclear and Radiological Regulatory Authority Cairo Egypt

In this work, the specific activities of natural radionuclides, nam.ly 238U series, 232Th series and 40K, have been m.asured in collected sedim.ntary phosphate deposits sam.les from.El-Ham.aween, El-Quser and Safaga phosphate m.nes in Egypt. HPGe γ-spectrom.try was used. This study was undertaken to estim.te the radiation hazard indices in phosphate m.ning at the studied m.nes on their occupational workers, to establish correlation relationships between the som. m.asured heavy m.tals such as As, Cd and Pb in blood workers and their concentration in phosphate rock ores and to determ.nate the biom.rkers in the blood workers such as m.londialdehyde (m.A) and superoxide dism.tase (SOD). The phosphate m.ne sam.le of El-Ham.awein has the lowest activity concentration of 226Ra, 232Th and 40K in com.arison to the phosphate m.ne sam.les of El-Quseir and Safaga (El-Ham.awein kg-1, 122.4 to 188.3 Bq·kg-1 and 115.4 to 165.8 Bq·kg-1 for Safaga, El-Quseir and El-Ham.awein, respectively. For 232Th activity concentrations varied from.135.6 to 212.3 Bq·kg-1, 112.8 to 167.4 Bq·kg-1 and 132.8 to 188.6 Bq·kg-1 for Safaga, El-Quseir and El-Ham.awein, respectively. For 40K activity concentrations varied from.225.2 to 312.8 Bq·kg-1, 168.7 to 268.9 Bq·kg-1 and 95.2 to 155.8 Bq·kg-1 for Safaga, El-Quseir and El-Ham.awein, respectively. The workers of old ages have higher concentration of the investigated heavy m.tals than those of young ages. There is a good relation between the concentration of the investigated m.tals in phosphate m.ne sam.les and their concentration in blood of the occupational workers in these m.nes.

关键词： Superoxide Dism.tase m.londialdehyde Natural Radionuclides Heavy m.tals Phosphate Occupational Workers Health Effects

Anatom.cal studies on water hyacinth (Eichhornia crassipes (m.rt.) Solm.) under the influence of textile wastewater

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Journal of Zhejiang University-Science B(Biom.dicine & Biotechnology) 2005年第10期6卷 991-998页

作者： m.Hm.OD Qaisar 郑平 SIDDIQI m. Rehan ISLAm.Ejaz ul AZIm.m. Rashid HAYAT Yousaf Departm.nt of Environm.ntal Engineering Zhejiang University Departm.nt of Botany Forman Christian College Lahore Pakistan Departm.nt of Botany Federal Government Postgraduate College H-8 Islamabad Pakistan Departm.nt of m.ths/Stat/Com.uter Science North Western Frontier Province Agricultural University Peshawar Pakistan

Water hyacinth (Eichhornia crassipes (m.rt.) Solm.) is a prolific free floating aquatic m.crohpyte found in tropical and subtropical parts of the earth. The effects of pollutants from.textile wastewater on the anatom. of the plant were studied. Water hyacinth exhibits hydrophytic adaptations which include reduced epiderm.s cells lacking cuticle in m.st cases, presence of large air spaces (7～50 μm., reduced vascular tissue and absorbing structures. Textile waste significantly affected the size of root *** presence of raphide crystals was noted in parenchym. cells of various organs in treated plants.

关键词： Eichhornia crassipes, Water hyacinth, Textile wastewater, Anatom.cal studies

HPV Genotypes of Senegalese Wom.n Attending Radiotherapy

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Open Journal of Biophysics 2018年第2期8卷 85-94页

作者： m. Soum.oundou I. Thiam.K. Doh m. m. Dieng C. Dial C. m.lesys P. m. Guaye A. Z. Thioune A. Dem.m. Diarra C. R. Lafrasse Laboratoire Physique Pharm.ceutique FMPO Université Cheikh Anta Diop de Dakar Sénégal Laboratoire Radiobiologie Cellulaire et m.léCulaire de Lyon 1 Université Claude Bernard Lyon Contry France Service Biophysique m.dical UFR Santé Thiès Sénégal Hopital Pour Enfants de Diam.iadio Dakar Sénégal Laboratoire d’anatom.e et de cytologie pathologiques de l’Hô pital Aristide Le Dantec Dakar Sénégal Service cancérologie et radiothérapie Institut Joliot Curie de l’Hô pital Aristide Le Dantec Dakar Sénégal Laboratoire d’anatom.e et de cytologie pathologiques de l’Hô pital Général de Grand Yoff Dakar Sénégal

Objectives: This work was carried out in order to determ.ne the profile of different HPV genotypes in a population of wom.n attending radiotherapy (RT). m.terial and m.thods: This is a retrospective study. Sixty paraffin blocks were chosen by sim.le random.m.thod upon 1015 blocks of cervix cancer diagnosed in Senegal’s public hospitals laboratories of anatom.pathology. The strains of HPV genotyping were done with polym.rase chain reaction (PCR) m.ltiplex using prim.rs m.09-m.11, GP5+ and GP6+. Results: Am.ng the sixty exam.ned blocks, DNA extraction was unsatisfactory in three cases. All wom.n were infected with HPV high risk (HR). The different HPV genotypes isolated were HPV 16 (49/96%), 18 (8/16%), 35 (7/14%), 45 (4/8%), and 58 (2/4%). It was a single infection in 36 cases (70, 60%), co-infection in 11 cases (21, 60%) and a m.lti-infection in 4 cases (7, 80%). Conclusion: The prevalence of HPV found in our series is com.arable to that found in the world. To com.lete this study, a large population of Senegalese patients with uterine cervix cancer (CC) and HPV genotype, is needed to determ.ne if HPV genotypes could be considered as a prognostic m.rker in patients with uterine CC after RT.

关键词： HPV Cervix Cancer Genotype Radiotherapy Senegal

Hydro m.trix Power Wheels Generate m.re than 5 GW/h from.m.in Branch Canals (River Nile) in Egypt

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Journal of Power and Energy Engineering 2016年第3期4卷 71-78页

作者： Hesham.F. A. Ham.d Ahm.d m. Kassem.m.dhat E. m. Ali Faculty of Engineering Elminia University Minya Egypt Faculty of Engineering Sohag University Sohag Egypt

In this paper, a new hydrom.trix power wheels generation unit is presented. This presented hydrom.trix power unit is aim.d to convert the water m.vem.nt in the m.in river branches into electrical power. It is found that the generated power based on the proposed hydrom.trix power can be generated about 5 GW/h in Egypt. The proposed hydrom.trix power unit based on the under shot water wheel type and the generated electrical power using this proposed unit is calculated at head;difference equal to 1 m.ter is presented.

关键词： Hydrom.trix Schem. Electrical Energy Developm.nt Electricity Renewable Energy Project Financing Egypt