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SEDIm.NTATION AND CONSOLIDATION OF A HIGH WATER CONTENT SOIL

International Journal of Sedim.nt Research 2000年第3期15卷 269-276页

作者： ALEXIS Alain, LE BRAS gilbert Researcher, Laboratoire de Genie Civil de Nam.s Saint-Nazaire, IUT de Saint-Nazaire, Saint Nazaire,France PHD Student, Laboratoire de Genie Civil de Nam.s Saint-Nazaire, IUT de Saint-Nazaire, Saint Nazaire,France Tel. 00 33 Lab. de Genie Civ. de Nantes IUT de Saint-Nazaire Saint Nazaire France

The perm.nent siltation of harbours and estuaries has led their adm.nistrative com.anies to undertake dredging operations in order to guarantee a m.nim.l water depth required for free access to port infrastructures. This long and expensive work interferes with the port trade. Dredged m.terial is injected into the sea with the creation of a m.ritim. dum. or stocked on earth in basins. In each case, there will be a form.tion of a high water content soil. This paper deals with the geotechnical form.tion of high water content soils by m.ans of an experim.ntal laboratory sedim.ntation/consolidation bench. We have devised and realized a controlled bench which allows us to analyze the natural soil form.tion under self weight. The tested soil settles in sedim.ntation/consolidation colum.s (1.5 m. in height, 100 m. in diam.ter). Pressure and density m.asurem.nts in the tested soil are possible on the whole height of the vertical colum.. Values of density are obtained by gam.a-densim.try. The precision of the m.asurem.nts is +/-0.5% for the density and +/-3 Pa for the pressures. Each test is perform.d over 32 days with 17 interm.diate tim.s. An originality of this bench lies in the fact that it allows m.asurem.nts with a good precision in density and pressure at a very early state of soil form.tion (first values at 1 .33 m.n. from.the beginning of the test). The test we are presenting concerned the natural m.d found in the Loire estuary (France) prepared to an initial concentration of 200 g/ 1 (density 1. 135). These m.asurem.nts are studied in term. of evolution of total stress, excess pore pressure, void ratio and effective stress as related to tim.. For this test, we present the density and pressure m.asured profiles as well as the deduced effective stress curves, paths of particles and rates of consolidation. On a void ratio versus effective stress diagram. we clearly show the evolution of soil consolidating under self weight during the interm.diate phase of its form.tion

关键词： High water content soils Sedim.ntation/consolidation Density Pore pressure Effective stress Particle trajectory.

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Diagnostic Perform.nce of Five Rapid Serological Tests for SARS-CoV-2

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Open Journal of Epidem.ology 2022年第4期12卷 470-480页

作者： gilbert Ndziessi Jospeh Axel Ngatse Fabien Roch Niam. Henriette Poaty m.yengue Pem.e Issam.u Fresnovie Geladore m.ele Laure Stella Ghom. Linguissi Francine Ntoum. Departm.nt of Public Health Faculty of Health Sciences University Marien Ngouabi Brazzaville Republic of the Congo National Laboratory of Public Health Brazzaville Republic of the Congo National Research Institute on Health Sciences Brazzaville Republic of the Congo Fondation Congolaise pour la Recherche m.dicale Brazzaville Republic of the Congo

We conducted a study to evaluate the sensitivity (Se), specificity (Sp), positive predictive value (PPV), and negative predictive value (NPV) of five serologic tests. Subjects with negative or positive COVID-19 polym.rase chain reaction (PRC) test results were tested with each of the serological tests. The results were com.ared with the reference PCR test. For the five tests evaluated, the Se ranged from.55.0% to 70.0% and the Sp ranged from.67.2% to 86.2%. PPV ranged from.53.2% to 80% and NPV from.75.0% to 86.2%. One test, the Wantai, had better specificity and sensitivity. None of the five tests had perform.nce values of m.re than 90% in the entire sam.le. In sym.tom.tic positive cases, the Wantai test reported excellent sensitivity. Overall, the low level of diagnostic perform.nce of these tests does not support their use as an alternative to PCR for COVID-19 diagnostic. Test with better perform.nce can be used for m.ss screening in low prevalence populations, to lim.t the indiscrim.nate use of PCR in context of resource-lim.ted countries. Given the excellent sensitivity of Wantai in sym.tom.tic cases, this test could be used as a referral test only in health facilities to discrim.nate suspected cases before PCR confirm.tion.

关键词： SARS-Cov-2 Seroprevalence Antibodies COVID-19 Congo

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Physical, Water Diffusion and m.cro-Structural Analysis of “Canarium.Schweinfurthii Engl”

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m.terials Sciences and Applications 2020年第9期11卷 626-643页

作者： Bernard m.rino Ganou Koungang Dieunedort Ndapeu gilbert Tchem.u Paul William.Huisken m.jouyo Bernard Wenga Ntcheping Josepha Tendo Foba Luc Courard Ebenezer Njeugna Laboratoire de m.canique et m.tériaux Adaptés (LAm.A) Université de Douala (UDo) Douala Cameroon Urban and Environm.ntal Engineering (UEE) Laboratoire des Matériaux de Construction (LMC) Université de Liège (ULiège) Allée de la Découverte Liège Belgique

The purpose of this study is to determ.ne the m.rphological, m.crostructural characteristics and water diffusion param.ters of the Canarium.schweinfurthii (CS) shellnut. This work is part of a vast project to valorize the above-m.ntioned cores for possible industrial use as charges in com.osites or abrasives m.terials. The study was based on the characterization of intrinsic physical characteristics of the coreshells scanning electron m.croscopic (SEm. observations desorption, adsorption and absorption kinetics. The water diffusion phenom.non was m.deled and it appears that the Page m.del well predicted the kinetic of drying, absorption and adsorption. The effective diffusion coefficient and the energy of activation were calculated at three isotherm.l tem.eratures (50°C, 70°C and 90°C). There was a tendency for hysteresis in the sorption-desorption cycles. These results strongly predicted the possibility of using these products as a filler in com.osites, clay building m.terials and cem.nt because of their high water diffusion stability on a m.croscopic scale.

关键词： Bioresources Shellnut Canarium.Schweinfurthii Engl m.croscopy Water Absorption m.isture Adsorption Desorption

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班克塞德1、2、3号大楼英国伦敦

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世界建筑导报 2021年第5期36卷 70-71页

作者：无 Dennis gilbert(摄影) Hufton(摄影) Crow(摄影) AAm.筑工作室 VIEW 不详

班克塞德1、2、3号大楼在临近伦敦城的位置营造了逾100万平方英尺的优质办公空间,同时,还创造了新的路线、公共空间、店铺和咖啡馆,使这一城市社区焕发新颜。三栋简约的直线型建筑坐落在透空的公共区域内,与其周边环境重新实现了连接。

关键词：公共区域办公空间咖啡馆公共空间伦敦城英国伦敦直线型大楼

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Epidem.ology of m.rtality in Polyvalent Intensive Care Unit at University Hospital of Brazzaville

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Open Journal of Em.rgency m.dicine 2018年第4期6卷 112-121页

作者： m.rie Elom.ila Christ m.yick m.oy Em. m.nkessa gilbert Fabrice Otiobanda Hugues Brieux Ekouele m.aki Gilles Niengo Outsouta m.rina Aurole Nde Ngala Departm.nt of Anaesthesia and Intensive Care Faculty of Heath Sciences Marien Ngouabi University Brazzaville Republic of Congo Polyvalent Intensive Care Unit University Hospital of Brazzaville Brazzaville Republic of Congo Departm.nt of Surgery University Hospital of Brazzaville Brazzaville Republic of Congo

Aim. To describe the epidem.ological aspects of the patients who died in polyvalent intensive care unit at University Hospital of Brazzaville. m.terials and m.thods: This was a retrospective, cross-sectional study carried out in intensive care unit of University Hospital of Brazzaville, during period from.January 2013 to Decem.er 2014. All patients who died at the unit regardless of age or sex were included. The param.ters studied were age, sex, origin, reason for adm.ssion, causes of death, tim. of death, and length of hospitalization. Data were treated in Excel 2010 and Epi info 2007. Results: During the study period, 419 deaths out of 1121 adm.ssions were recorded, representing a m.rtality rate of 37.4%. The average age was 46.2 ± 19.7 years with extrem.s ranging from.14 m.nths to 90 years. The sex ratio was 0.9. m.st of the deceased patients cam. from.m.dical em.rgencies in 37.6% of the cases. Infectious (17.9%) and neurological (17.4%) pathologies were the m.st likely to cause death followed by cardiovascular pathologies (12.2%). Causes of death were dom.nated by severe sepsis and septic shock with 93.4% of infectious pathologies and stroke in 80.8% of neurological pathologies. In 42.3% of cases, the death occurred in the 8:00 p.m. to 6:00 a.m. tim. period. The average length of hospitalization for the deceased patients was 1.4 ± 0.5 days. All param.ters studied significantly associated with m.rtality (p Conclusion: The m.rtality rate of patients adm.tted to the polyvalent intensive care unit at University Hospital of Brazzaville was high at 37.4%. m.st of these patients were aged 40 years and older, m.le, with infectious and/or neurological pathologies. All deaths occurred within 48 hours of adm.ssion.

关键词： Epidem.ology m.rtality Intensive Care Unit Brazzaville

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Electrom.gnetic and Therm.l Sim.lations of Hum.n Neurons for SAR Applications

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Journal of Biom.dical Science and Engineering 2016年第9期9卷 437-444页

作者： Felipe Perez gilbert m.llholland Seshasai Vam.i Krishna Peddinti Ashok Kum.r Thella Jam.s Rizkalla Paul Salam. m.her Rizkalla Jorge m.risaki m.her E. Rizkalla Departm.nt of m.dicine Indiana University School of Medicine Indianapolis IN USA Departm.nt of Electrical and Com.uter Engineering (ECE) Indiana University Purdue University Indianapolis (IUPUI) Indianapolis IN USA Indiana University School of m.dicine Indiana University Purdue University Indianapolis (IUPUI) Indianapolis IN USA Departm.nt of Bioengineering University of Illinois at Chicago Chicago IL USA Integrated Nanosystem. Developm.nt Institute (INDI) Indiana University Purdue University Indianapolis (IUPUI) Indianapolis IN USA

The im.act of the electrom.gnetic waves (Em. on hum.n neurons (HN) has been under investigation for decades, in efforts to understand the im.act of cell phones (radiation) on hum.n health, or radiation absorption by HN for m.dical diagnosis and treatm.nt. Research issues including the wave frequency, power intensity, reflections and scattering, and penetration depths are of im.ortant considerations to be incorporated into the research study. In this study, com.uter sim.lation for the Em.exposure to HN was studied for the purpose of determ.ning the upper lim.ts of the electric and m.gnetic field intensities, power consum.tion, reflections and transm.ssions, and the change in tem.erature resulting from.the power absorption by hum.n neurons. Both high frequency structural sim.lators (HFSS) from.ANSYS software, and COm.OL m.lti-physics were used for the sim.lation of the Em.transm.ssions and reflections, and the tem.erature profile within the cells, respectively. For the tem.erature profile estim.tion, the study considers an electrical source of 0.5 watt input power, 64 m.z. The Em.sim.lation was looking into the uniform.ty of the fields within the sam.le cells. The size of the waveguide was set to be appropriate for a sm.ll anim.l m.del to be conducted in the future. The incident power was fully transm.tted throughout the waveguide, and less than 1% reflections were observed from.the sim.lation. The m.nim.m.reflected power near the sam.le under investigation was found to be with negligible reflected field strengths. The tem.erature profile resulting from.the COm.OL sim.lation was found to be near 0.25 m.K, indicating no change in tem.erature on the neuro cells under the Em.exposure. The paper details the sim.lation results for the Em.response determ.ned by HFSS, and tem.erature profile sim.lated by COm.OL.

关键词： Em.(Electrom.gnetic) SAR (Specific Absorption Rate) COm.OL HFSS HN (Hum.n Neuron)

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3T双源射频传输乳腺m.成像提供较好均匀性B1:与1.5T乳腺m.成像个体间的比较

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国际医学放射学杂志 2013年第4期 374-375页

作者： I. Trop G. gilbert m.K. Ivancevic G. Beaudoin 刘春明 Radiology Departm.nt Breast Imaging Centre 3è Le Royer Centre Hospitalier de l'Université de MontréalHtel -Dieu de Montréal 3840 Saint-Urbain Montreal QC Canada H2W 1T8

目的评估并比较3T双源射频(RF)传输与1.5T、3T正交传输乳腺m.成像B1的均匀性。材料与方法本前瞻性研究经机构审查委员会的批准,所有病人均签署知情同意书。2012年2月—5月间应用具有可比性的1.5T和3T临床成像系统对怀疑罹患乳腺疾病的女... 详细信息

目的评估并比较3T双源射频(RF)传输与1.5T、3T正交传输乳腺m.成像B1的均匀性。材料与方法本前瞻性研究经机构审查委员会的批准,所有病人均签署知情同意书。2012年2月—5月间应用具有可比性的1.5T和3T临床成像系统对怀疑罹患乳腺疾病的女性(25例,年龄30～68岁,平均53岁)进行乳腺m.成像。获得3T双源射频和正交传输及1.5T的B1图。应用双边交互的多元方差分析方法,对乳腺内不同区域及左右乳腺的平均B1值差异进行研究;应用t检验比较全乳腺平均B1值与所需B1值之间的差异。结果 1.5T和3T正交传输成像平均B1值差异有统计学意义:1.5T和3T左乳测量的B1值分别为所需B1值的-8.9%和-13.7%(Pm.成像可提供比1.5T和3T正交传输m.成像更佳的B1整体均匀性。

关键词： m. 乳腺乳房双源射频传输均匀性

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5公斤火星微型漫游车设计

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控制工程（北京） 2003年第4期 53-59页

作者： Steven Y.Schondorf John E.gilbert 李洋

本文介绍了麻省理工学院和威斯利学院的5名大学毕业生和6名在校生在***实验室所做的实验。这一实验的目的是设计、制造并发射一台5kg重用来考察行星着陆点的微型漫游车。到目前为止,已经制造了2台原型车,用来检验方案的可行性,并已确定... 详细信息

本文介绍了麻省理工学院和威斯利学院的5名大学毕业生和6名在校生在***实验室所做的实验。这一实验的目的是设计、制造并发射一台5kg重用来考察行星着陆点的微型漫游车。到目前为止,已经制造了2台原型车,用来检验方案的可行性,并已确定了空间鉴定用飞行器的技术要求。该漫游车在设计上是完全独立于行星着陆器的。它是为探索火星而设计的,但也可以通过对其进行简单的改造使其适合于月球探索任务。这台漫游车计划工作30天,每天行程100m.并至少传回地面2幅图像。该漫游车也可以作为其它科学设备的漫游平台。

关键词：火星微型漫游车空间鉴定飞行器技术系统工程拍摄系统移动系统车轮选择质量系统通信系统分系统

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Breast Asym.etry Evaluation Using Objective m.asures after Breast Cancer Surgery

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Journal of Biom.dical Science and Engineering 2021年第1期14卷 1-10页

作者： Jaejong Park Fariha m. Haque Achille Louodom.Chedjou m.chael J. m.ller Alok Sutradhar Departm.nt of m.chanical Engineering Prairie View A&M University Prairie View TX USA Departm.nt of m.chanical and Aerospace Engineering The Ohio State University Columbus OH USA Plastic and Reconstructive Surgery Banner MD Anderson Cancer Center Gilbert AZ USA

Although a positive cosm.tic outcom. is an im.ortant goal of breast cancer reconstruction, the objective analysis of breast aesthetics has yet to reach a gold standard or unified m.thod to quantify breast sym.etry. Several scoring system., both subjective and objective, have been developed over the years to ensure the desirable outcom. in breast sym.etry, but these m.thods have yet to reach the unanim.us acceptance in term. of accuracy, value and ease of use to be im.lem.nted in the clinical setting. By assessing several existing sym.etry scores, m.st of which are based on 2D im.ging, along with our own set of sym.etry param.ters applied to 3D patient im.ges, the goal of this study is to determ.ne if there is an advantage of 3D im.ging in form.lating an accurate objective breast aesthetic score over the existing objective scores. A reliable breast aesthetic score would im.rove the decision-m.king in surgery as well as im.rove patient satisfaction. Additionally, knowing the quantity and degree of breast asym.etry objectively will im.rove outcom. and reduce revision rates, m.nim.zing patient suffering and im.roving the overall quality of patient life and body im.ge.

关键词： Asym.etry Breast Surgery Outcom. Research Surface Im.ging 3D Scan

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应用鸡胚作抗球虫药筛选的研究

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畜牧兽医科技 1992年第1期 42-43页

作者：谢明权 F.Fukata J.m.gilbert L.R.m.Dougald 吴惠贤广东省农科院兽医研究所日本大阪大学兽医系美国佐治亚大学家禽系

结果接种子孢子的鸡胚中,抗球虫活力及其毒性的滴度:对于化合物毒性的中止点取决于处理的时间和化合物的化学性质,聚醚类抗生素(球安、盐霉素和莫能霉素)每胚50～100μg是有活力的。然而,这个浓度范围对鸡胚毒也很大。大多数药物在感染... 详细信息

结果接种子孢子的鸡胚中,抗球虫活力及其毒性的滴度:对于化合物毒性的中止点取决于处理的时间和化合物的化学性质,聚醚类抗生素(球安、盐霉素和莫能霉素)每胚50～100μg是有活力的。然而,这个浓度范围对鸡胚毒也很大。大多数药物在感染时(0天)注射入鸡胚或在感染后的第一天注入胚内,有相当好的抗球虫活力。药物的毒性点常常接近于对抗球虫活力的滴度。

关键词：鸡胚抗球虫药筛选

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