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The influence of mobility among high-risk populations on HIV transmission in Western Kenya

Infectious Disease Modelling 2018年第1期3卷 97-106页

作者： Anna Bershteyn Kennedy K.Mutai Adam N.Akullian Daniel j.Klein Britta L.jewell samuel M.Mwalili Institute for Disease Modeling 3150139th Ave.SEBellevueWA 98005USA National Aids Control Council P.O.Box 61307-00200Argwings Kodhek RdNairobiKenya Department of Medicine University of California and San FranciscoZuckerberg San Francisco General Hospital1001 Potrero AvenueSan FranciscoCA 94110USA Centers for Disease Control and Prevention PO Box 606Village MarketNairobi00621Kenya

Western Kenya suffers a highly endemic and also very heterogeneous epidemic of human immunodeficiency virus(HIV).Although female sex workers(FSW)and their male clients are known to be at high risk for HIV,HIV prevalence across regions inWestern Kenya is not strongly correlated with the fraction of women engaged in commercial *** agentbased network model of HIV transmission,geographically stratified at the county level,was fit to the HIV epidemic,scale-up of interventions,and populations of FSW in Western Kenya under two assumptions about the potential mobility of FSW *** the first,all clients were assumed to be resident in the same geographies as their interactions with *** the second,some clients were considered non-resident and engaged only in interactions with FSW,but not in longer-term non-FSW partnerships in these *** both assumptions,the model successfully reconciled disparate geographic patterns of FSW and HIV *** patterns in the model suggest a greater role for FSW in local transmission when clients were resident to the counties,with 30.0%of local HIV transmissions attributable to current and former FSW and clients,compared to 21.9%when mobility of clients was ***,the overall epidemic drivers remained similar,with risky behavior in the general population dominating transmission in highprevalence *** modeling suggests that co-location of high-risk populations and generalized epidemics can further amplify the spread of HIV,but that large numbers of formal FSW and clients are not required to observe or mechanistically explain high HIV prevalence in the general population.

关键词： prevalence client stratified

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关于实施城乡土地信息系统的探讨

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测绘科学 1989年第2期20卷 23-27页

作者： samuel j.Meltz 周德军

前言要建立一个土地信息系统,首先必须设计一个指导性模型,并接受地方政府的检验。这主要是基于政府法律的、政治的作用,就是说,土地信息系统的实施是否成功,将有赖于对系统的方法和地方政府的需要有个清楚的了解。另外,设计数据库规范... 详细信息

前言要建立一个土地信息系统,首先必须设计一个指导性模型,并接受地方政府的检验。这主要是基于政府法律的、政治的作用,就是说,土地信息系统的实施是否成功,将有赖于对系统的方法和地方政府的需要有个清楚的了解。另外,设计数据库规范和系统信息时,应充分考虑到系统用户的需要。本文以乔治亚州贝罗(Barrow)县为例,对县级土地信息系统作了初步的探讨。主要问题是信息显示手段的计算机制图和数字式地图的应用。

关键词：土地信息系统计算机制图乔治亚州政府决策者数据管理数据库规范土地登记制图单元文件形式应用研究

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Lessons Learned from Aquifer Storage and Recovery (ASR) Systems in the United States

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journal of Water Resource and Protection 2014年第17期6卷 1603-1629页

作者： Frederick Bloetscher Chi Ho Sham joseph j. Danko III samuel Ratick Florida Atlantic University Boca Raton USA The Cadmus Group Inc. Waltham USA University of Connecticut Mansfield USA Clark University Worcester USA

This paper is the result of a survey and analyses of available data from 204 Aquifer Storage and Recovery (ASR) sites in the United States. This ASR site survey included all active and inactive sites and collected both operational and construction details. The inactive sites are of particular interest here because these are the projects from which valuable lessons can often be learned. The intent of this paper is to examine the reasons for those projects that are terminated. Statistical analyses indicated that there were factors associated with terminated ASR projects: general geographic location (e.g., region), operational issue, storage cycle, casing material, and injection formation. The injection formation involves local geology and aquifer characteristics (i.e., whether the aquifer is leaky and/or unconfined, and if water can be displaced to surface water bodies or adjacent aquifers). Operational problems associated with inactive projects include well clogging, metals mobilization, a low percentage of recovery for injected water, and disinfection byproducts in the recovered water.

关键词： Aquifer Storage and Recovery Inactive Clogging Recovery

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Overview of ytterbium based transparent ceramics for diode pumped high energy solid-state lasers

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High Power Laser Science and Engineering 2018年第4期6卷 109-118页

作者： samuel Paul David Venkatesan jambunathan Antonio Lucianetti Tomas Mocek HiLASE Centre Institute of Physics of the Czech Academy of SciencesZa Radnicí 8285

Development of high energy laser sources with nanosecond pulses at several hertz values for repetition rate has been very attractive in recent years due to their great potential for practical applications. With the recent advancement in fabricating large size laser quality transparent ceramics, diode pumped solid-state laser generating pulse energy of 100 j at 10 Hz has been recently realized at HiLASE center using Yb:YAG ceramic with Cr:YAG cladding. This review discusses Yb based high energy lasers, specific laser geometries for efficient thermal management and the role of transparent ceramics in such diode pumped high-energy-class solid-state lasers around the world.

关键词： diode pumped solid-state lasers high energy lasers laser materials transparent ceramics

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Effect of pancreatic endotherapy on quality of life in chronic pancreatitis patients:A systematic review

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World journal of Gastrointestinal Endoscopy 2021年第8期13卷 336-344页

作者： samuel Y Han Georgios I Papachristou Raj j Shah Darwin L Conwell Division of Gastroenterology Hepatology and NutritionThe Ohio State University Wexner Medical CenterColumbusOH 43210United States Division of Gastroenterology and Hepatology University of Colorado Anschutz Medical CampusAuroraCO 80045United States

BACKGROUND Pancreatic endotherapy provides treatment options for the management of chronic pancreatitis-related structural complications such as pancreatic duct stones,strictures,and pancreatic fluid *** studies detailing endotherapy,however,have focused on technical success outcomes such as stone clearance or stricture *** To review the effect of pancreatic endotherapy on patient-centered *** Systematic review of studies examining pancreatic *** A total of 13 studies including 3 randomized clinical trials were *** majority of studies found an improvement in quality of life with pancreatic *** While pancreatic endotherapy does appear to improve quality of life,there are clear gaps in knowledge regarding many pancreatic endotherapy ***,qualitative analysis is lacking in these studies and further work is needed to elucidate the patient experience with pancreatic endotherapy.

关键词： Chronic pancreatitis Pancreatic endotherapy Endoscopic retrograde cholangiopancreatography Quality of life

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Study of Mechanical Behaviour of Coconut Shell Reinforced Polymer Matrix Composite

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journal of Minerals and Materials Characterization and Engineering 2012年第8期11卷 774-779页

作者： Agunsoye j. Olumuyiwa Talabi S. Isaac Sanni O. samuel Department of Metallurgical and Materials Engineering University of Lagos Akoka Yaba Lagos Nigeria

The morphology and mechanical properties of coconut shell reinforced polyethylene composite have been evaluated to establish the possibility of using it as a new material for engineering applications. Coconut shell reinforced composite was prepared by compacting low density polyethylene matrix with 5% - 25% volume fraction coconut shell particles and the effect of the particles on the mechanical properties of the composite produced was investigated. The result shows that the hardness of the composite increases with increase in coconut shell content though the tensile strength, modulus of elasticity, impact energy and ductility of the composite decreases with increase in the particle content. Scanning Electron Microscopy (SEM) of the composites (with 0% - 25% particles) surfaces indicates poor interfacial interaction between the coconut shell particle and the low density polyethylene matrix. This study therefore exploits the potential of agrobased waste fiber in Nigeria as an alternative particulate material for the development of a new composite.

关键词： Coconut Shell Particles Mechanical Properties Composite Morphology Polyethylene Matrix

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Project management in practice

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2001年

作者： samuel j. Mantel jr. ... [et al.].

来源：畅想之星图书光盘版（南... 评论

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Thermal, Mechanical and Rheological Properties of Low Density/Linear Low Density Polyethylene Blend for Packing Application

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journal of Materials Science and Chemical Engineering 2018年第1期6卷 32-38页

作者： F. Al-Attar M. Alsamhan A. Al-Banna j. samuel Polymeric Products and Customization Program Petroleum Research Center Kuwait Institute for Scientific Research Kuwait City Kuwait

Packaging is the subject of considerable commercial development by a variety of organizations around the world. In this study the mechanical, thermal and rheological properties were investigated for different blend ratios of low density polyethylene (LDPE) and linear low density polyethylene (LLDPE). The weight percent of the LDPEs used in the blends were 50, 60, 70, 80 and 90. The polymer blends were prepared in a twin screw extruder to produce a thin sheet (1-mm thickness) similar to the packaging grade. Tensile results showed that the 50/50 composition exhibited the highest stress at break, where the differential scanning calorimetry results indicated a co-crystalline phase in some blends. The results produced by the rheometer revealed the LLDPE effect over the complex viscosity and consequently blend easy processing. The present study conclusively demonstrates that at low weight percent of linear low density polyethylene in the blend displays better properties for packaging application.

关键词： PE Blend Packaging Tensile Properties Morphology

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Organic photovoltaics for simultaneous energy harvesting and high-speed MIMO optical wireless communications

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Light(Science & Applications) 2021年第3期10卷 379-389页

作者： Iman Tavakkolnia Lethy K.jagadamma Rui Bian Pavlos P.Manousiadis Stefan Videv Graham A.Turnbull Ifor D.W.samuel Harald Haas LiFi Research and Development Centre Department of Elearonic&Electrical EngineeringThe University of StrathclydeTechnology&Innovation Centre99 George StreetGlasgow G11RDUK Organic Semiconductor Centre SUPASchool of Physics and AstronomyUniversity of St AndrewsSt Andrews KY169SSUK pureLiFi Rosebery House9 Haymarket TerraceEdinburgh EH125EZUK

We show that organic photovoltaics(OPVs)are suitable for high-speed optical wireless data receivers that can also harvest *** addition,these OPVs are of particular interest for indoor applications,as their bandgap is larger than that of silicon,leading to better matching to the spectrum of artificial *** selecting a suitable combination of a narrow bandgap donor polymer and a nonfullerene acceptor,stable OPVs are fabricated with a power conversion efficiency of 8.8%under 1 Sun and 14%under indoor lighting *** an optical wireless communication experiment,a data rate of 363 Mb/s and a simultaneous harvested power of 10.9 mW are achieved in a 4-by-4 multipleinput multiple-output(MIMO)setup that consists of four laser diodes,each transmitting 56 mW optical power and four OPV cells on a single panel as receivers at a distance of 40 *** result is the highest reported data rate using OPVs as data receivers and energy *** finding may be relevant to future mobile communication applications because it enables enhanced wireless data communication performance while prolonging the battery life in a mobile device.

关键词： MIMO simultaneous lighting

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Paleoproterozoic juvenile magmatism within the northeastern sector of the Sao Francisco paleocontinent:Insights from the shoshonitic high Ba-Sr Montezuma granitoids

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Geoscience Frontiers 2020年第5期11卷 1821-1840页

作者： samuel Moreira Bersan Alice Fernanda de Oliveira Costa Andre Danderfer Francisco Roberio de Abreu Cristiano Lana Glaucia Queiroga Craig Storey Hugo Moreira Universidade Federal de Ouro Preto Programa de Pos-graduacaoDepartamento de GeologiaCampus Morro do CruzeiroOuro PretoMGCEP 35400-000Brazil Universidade Federal de Ouro Preto Departamento de GeologiaCampus Morro do CruzeiroOuro PretoMGCEP 35400-000Brazil Sustain Geologia Ltda Teresa M.Valadares 503/502Belo HorizonteMGCEP 30575-160Brazil University of Portsmouth School of Earth and Environmental SciencesBurnaby BuildingBurnaby RoadPortsmouthPO13QLUK

New,integrated petrographic,mineral chemistry,whole rock geochemical,zircon and titanite UPb geochronology,and zircon Hf isotopic data from the Montezuma granitoids,as well as new geochemical results for its host rocks represented by the Corrego Tingui Complex,provides new insights into the late-to post-collisional evolution of the northeastern Sao Francisco paleocontinent.U-Pb zircon dates from the Montezuma granitoids spread along the Concordia between ca.2.2 Ga to 1.8 Ga and comprise distinct *** I have crystallization ages between ca.2.15 Ga and 2.05 Ga and are interpreted as inherited *** II zircon dates vary from 2.04 Ga to1.9 Ga and corresponds to the crystallization of the Montezuma granitoids,which were constrained at ca.2.03 Ga by the titanite U-Pb *** age zoning is common within the ca.1.8 Ga Group III zircon ages,being related to fluid isotopic re-setting during the Espinhaco rifiting ***εHf(t)analysis show dominantly positive values for both Group I(-4 to+9)andⅡ(-3 to+8)zircons and TDM2 model ages of 2.7-2.1 Ga and 2.5-1.95 Ga,***,the Montezuma granitoids are weakly peraluminous to metaluminous magnesian granitoids,enriched in LILES and LREE,with high to moderate Mg#and depleted in some of the *** lithochemical signature,added to the juvenile signature of both inherited and crystallized zircons,allowed its classification as a shoshonitic high Ba-Sr granitoid related to a late-to post-collisional lithosphere delamination followed by asthenospheric *** this scenario,the partial melting of the lithospheric mantle interacted with the roots of an accreted juvenile intra-oceanic arc,being these hybrid magma interpreted as the source of the Montezuma *** Corrego Tingui Complex host rocks are akin to a syn-to late-collisional volcanic arc granitoids originated from the partial melting of ancient crustal *** results presented in this study have revealed the occurrence of j

关键词： Zircon U–Pb-Hf Titanite U–Pb High Ba–Sr Late-to post-collisional Sao Francisco paleocontinent

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