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Open Journal of Physical Chemistry 2021年第2期11卷 13-53页

作者： Hebah M. Abdel-w.hab joseph w. bozzelli Department of Chemistry and Environmental Science New Jersey Institute of Technology Newark New Jersey USA

Structures and thermochemical properties of these species w.re determined by the gaussian M-062x/6-31 + g (d, p) calculation enthalpies of formation for 19 fluorinated ethanol and some radicals w.re calculated w.th a popular Ab initio and density functional theory methods: The gaussian M-062x/6-31 + g (d, p) via several series of isodesmic reactions. Entropies (S298°K

关键词： Thermo-Chemistry Enthalpy Fluorinated Ethanol’s Thermochemical Properties

Supporting farmer-managed irrigation systems in the Shigar valley, Karakorum： Role of the government and Aga Khan Rural Support Programme

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Journal of Mountain Science 2017年第10期14卷 2064-2081页

作者： joseph K.w.HILL Department of Rural Management Xavier Institute of Social Sciences (XISS) Dr Gamil Bulcke Path Post Box 7 Ranchi- 834001 India

Farmer-managed irrigation systems(FMIS) in the high altitude valleys of the Karakorum,Pakistan, continue to be managed effectively despite increased pressure on the social arrangements that sustain them. Colonial era records show. that over a century ago government agencies undertook irrigation support projects. In the past three decades,government agencies and the non-government agency Aga Khan Rural Support Programme(AKRSP), w.ich channels foreign funds into the region, have actively engaged in the provision of irrigation support. This article seeks to explore w.ether such projects support or undermine farmer-managed irrigation systems and the complex institutional arrangements that underpin them. Field research using ethnographic and participatory methods w.s conducted in spring 2013 in the upper Shigar valley, Skardu district, GilgitBaltistan. The findings show.that irrigation development is a political activity that involves village-based actors, religious leaders, local politicians,and government and non-government *** agencies operate in a largely top-dow.,engineering mode, their larger projects limited to villages suffering w.ter scarcity. The local government provides small funds for renovation w.rk of FMIS,though allocation of funds is highly politicized. Nongovernment agencies, for a variety of reasons including donor-funding cycles, apply a one-size-fitsall ‘participatory' model in an attempt to socially engineer rules and institutions. In communities divided by factionalism the use of such external models that stress formation of committees are unlikely to yield positive results, and could instead contribute to undermining the very systems they seek to support. This research argues that irrigation interventions should take care to build upon the rich and complex social arrangements that have sustained FMIS through the centuries.

关键词： Farmer-managed irrigation systems Institutional arrangements Government Aga Khan Rural Support Programme Shigar valley Karakorum

Accountinginformationsystems: essential concepts and applications joseph w. w.lkinson ... [et al.]. 4th ed.

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Regulating regulatory T cells to achieve transplant tolerance

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作者： joseph w. w.lkinson ... [et al.].

来源：畅想之星图书光盘版（南... 评论

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Hepatobiliary & Pancreatic Diseases International 2007年第4期6卷 348-357页

作者： w.yne w. Hancock Division of Transplantation Immunology Department of Pathology and Laboratory MedicineJoseph StokesJr.Research Institute and Biesecker Pediatric Liver Center Children's Hospital of Philadelphia and University of Pennsylvania Philadelphia PA 19104 USA

BACKGROUND:Regulatory T cells(Tregs) play crucial roles in both induction and maintenance of tolerance. This active immune regulation may contribute not only to the control of immune responses to self-antigens and thereby prevent autoimmune diseases,but also the control of responses to non-self molecules in adaptive immunity. Numerous experimental and clinical studies indicate that manipulating the balance betw.en regulatory and responder T cells is an effective strategy to control immune responsiveness after transplantation. DATA SOURCES:Literature search w.s conducted using PubMed on the related subjects. Part of the material w.s based on the most recent w.rk in the authors’ laboratory. RESULTS:w. propose some new.strategies to achieve transplant tolerance in rodent animals via manipulating Treg function,including using histone deacetylase(HDAC) inhibitor to regulate Foxp3 transcription and enhance Treg suppression,induction of Treg-sparing apoptosis via Nur77,and identification of the co-inhibitory molecule herpes virus entry mediator(HVEM) as an effector molecule for Treg function. CONCLUSION:Regulation of Treg function w.ll definitely provide us very promising tools to achieve clinical tolerance in the future.

关键词： regulatory T cells transplant tolerance HDAC inhibitor apoptosis Nur77 co-stimulation

Turbulent lock release gravity current

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Science China(Technological Sciences) 2001年第5期44卷 449-462页

作者：陈国谦 joseph H.w.Lee National Laboratory for Turbulence Research Department of Mechanics Peking University Beijing 100871China

The time evolution of a turbulent lock release gravity current, formed by a finite volume ofhomogeneous fluid released instantaneously into another fluid of slightly low.r density, w.s studied byexperimental measurements of the density structure via elaborate digital image processing and by a nu-merical simulation of the flow.and mixing using a tw.-equation turbulence model. The essential fact thatthe gravity current passes through an initial slumping phase in w.ich the current head advances steadilyand a second self-similar phase in w.ich the front velocity decreases like the negative third pow.r of thetime after release is satisfactorily presented by the laboratory observation. An overall entrainment ratioproportional to the distance from the release point is found by the numerical simulation. The renormal-ization group (RNG) k- ε model for Reynolds-stress closure is validated to characterize the gravitycurrent w.th transitional and localized turbulence.

关键词： turbulence modeling, gravity current, environmental hydraulics.

Positron imaging systems for studying particulate, granular and multiphase flow.

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Particuology 2012年第2期10卷 146-153页

作者： Thomas w.Leadbeater David J.Parker joseph Gargiuli Positron Imaging Centre University of BirminghamEdgbastonBirmingham B152TTUKa

The University of Birmingham has pioneered and adapted the use of the medical imaging technique know. as positron emission tomography （PET） to the study of particulate, granular and multiphase flow. in industrial and physical processes, This paper provides a review.of the PET and complimentary positron emission particle tracking （PEPT） techniques and details their application to the study of particulate sys- tems, The current state of the art, recent developments and example results from many of the applications to w.ich these techniques have been applied are highlighted.

关键词： Positron emission particle tracking (PEPT)Particle dynamicsMulti-phase flow.measurement

基于自适应MIMO-OFDM调制的超宽带通信系统

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清华大学学报（自然科学版） 2006年第4期46卷 516-518页

作者： joseph w.Mw.ngoka 曹志刚清华大学电子工程系北京100084

为了避免超宽带信号对现有通信系统的干扰，其发射功率受到严格的限制，这在很大程度上限制了超宽带通信的覆盖范围。该文研究基于自适应多输入多输出正交频分复用的方案，以使超宽带系统在低信噪比要求下能够实现有效通信。该方法充分... 详细信息

为了避免超宽带信号对现有通信系统的干扰，其发射功率受到严格的限制，这在很大程度上限制了超宽带通信的覆盖范围。该文研究基于自适应多输入多输出正交频分复用的方案，以使超宽带系统在低信噪比要求下能够实现有效通信。该方法充分利用多天线分集和超宽带信道的多径效应。通过自适应调制，在信噪比较好的子载波上传输更多的信息，从而提高了超宽带链路的鲁棒性。在改进的Saleh-Valenzuela信道模型上的仿真结果表明，该系统与传统的正交频分复用相比，在信噪比性能上有8～18dB的提高。

关键词：无线通信超宽带多输入多输出正交频分复用自适应调制 Saleh-Valenzuela信道模型

Incorporation of Biochar Carbon into Stable Soil Aggregates:The Role of Clay Mineralogy and Other Soil Characteristics

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Pedosphere 2017年第4期27卷 694-704页

作者： Charlene N. KELLY joseph BENJAMIN Francisco C. CALDERON Maysoon M. MIKHA David w. RUTHERFORD Colleen E. ROSTAD w.st Virginia University Division of Forestry and Natural Resources337 Percival HallMorgantownWV 26506USA USDA-ARS Central Great Plains Research Station40335 County RoadGGAkronCO 80720USA U.S.Geological Survey MS 408PO Box 25046Building 95Denver Federal CenterDenverCO 80225USA

Aggregation and structure play key roles in w.ter-holding capacity and stability of *** this study,the incorporation of carbon(C) from sw.tchgrass biochar into stable aggregate size fractions w.s assessed in an Aridisol(from Colorado,USA) dominated by 2:1 clays and an Alfisol(from Virginia,USA) containing w.athered mixed 1:1 and 2:1 mineralogy,to evaluate the effect of biochar addition on soil *** biochar w.s applied at 4 levels,0,25,50,and 100 g kg^(-1),to the soils grow. w.th w.eat in a grow.h chamber *** changes in soil strength and w.ter-holding capacity using w.ter release curves w.re *** the Colorado soil,the proportion of soil occurring in large aggregates decreased,w.th concomitant increases in small size *** changes in aggregate size fractions occurred in the Virginia *** the Colorado soil,C content increased from 3.3 to 16.8 g kg^(-1),w.ereas in thew.th 100 g kg^(-1)biochar *** the Virginia soil,C content w.thin aggregate size fractions increased for each size fraction,except the>2 000 μm *** greatest increase(from 6.2 to 22.0 g kg^(-1)) occurred in the 53–250 μm *** results indicated that C w.s incorporated into larger aggregates in the Virginia soil,but remained largely unassociated to soil particles in the Colorado *** addition had no significant effect on w.ter-holding capacity or strength *** biochar to more w.athered soils w.th high native soil organic content may result in greater stabilization of incorporated C and result in less loss because of erosion and transport,compared w.th the soils dominated by 2:1 clays and low.native soil organic content.

关键词： aggregate size fractions, aggregate stability, mineralogy, soil strength, w.ter-holding capacity, w.athered soil

Angiosperm phylogeny inferred from sequences of four mitochondrial genes

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Journal of Systematics and Evolution 2010年第6期48卷 391-425页

作者： Tory A.HENDRY joseph w.BROw. Geordan T.HUDSON Department of Ecology and Evolutionary Biology University of Michigan

An angiosperm phylogeny w.s reconstructed in a maximum likelihood analysis of sequences of four mitochondrial genes,atp1,matR,nad5,and rps3,from 380 species that represent 376 genera and 296 families of seed *** is largely congruent w.th the phylogeny of angiosperms reconstructed from chloroplast genes atpB,matK,and rbcL,and nuclear 18S *** basalmost lineage consists of Amborella and Nymphaeales(including Hydatellaceae).Austrobaileyales follow.this clade and are sister to the mesangiosperms,w.ich include Chloranthaceae,Ceratophyllum,magnoliids,monocots,and *** the exception of Chloranthaceae being sister to Ceratophyllum,relationships among these five lineages are not w.ll *** eudicots,Ranunculales,Sabiales,Proteales,Trochodendrales,Buxales,Gunnerales,Saxifragales,Vitales,Berberidopsidales,and Dilleniales form a basal grade of lines that diverged before the diversification of rosids and *** rosids,the COM(Celastrales-Oxalidales-Malpighiales) clade is sister to malvids(or rosid II),instead of to the nitrogen-fixing clade as found in all previous large-scale molecular analyses of *** and Caryophyllales are members of an expanded asterid *** study show. that the mitochondrial genes are informative markers for resolving relationships among genera,families,or higher rank taxa across *** low.substitution rates and low.homoplasy levels of the mitochondrial genes relative to the chloroplast genes,as found in this study,make them particularly useful for reconstructing ancient phylogenetic relationships.A mitochondrial gene-based angiosperm phylogeny provides an independent and essential reference for comparison w.th hypotheses of angiosperm phylogeny based on chloroplast genes,nuclear genes,and non-molecular data to reconstruct the underlying organismal phylogeny.

关键词： angiosperm homoplasy mitochondrial gene molecular evolutionary rate phylogeny rosids.

The History of Chinese Mathematics-the Founding of the IHNS(CAS)-and the True Story of a w.ong Diagram in SCC Volume 3

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Chinese Annals of History of Science and Technology 2018年第2期2卷 86-128页

作者： joseph w.Dauben PhD Program in History The Graduate CenterThe City University of New YorkNY 10016US

The Institute for the History of Natural Sciences in Beijing celebrated the sixtieth anniversary of its founding in 1957 w.th an international symposium devoted to“China and the w.rld in the Global History of Science and Technology.”2 This contribution to that symposium focuses on the roles that historians of mathematics,East and w.st,have played in bringing the importance of mathematics in China to the attention of the w.rld at *** concludes by discussing a controversy surrounding the diagram and purported“proof”given in the ancient mathematical classic,the Zhoubi suanjing周髀算經(Mathematical classic of Zhou’s gnomon),of the gou-gu theorem that appeared in volume 3 of joseph Needham’s Science and Civilisation in China,published in 1959.

关键词： Institute for the History of Natural Sciences ⅢICHCS Beijing(1974) Zhu Kezhen Li Yan Qian Baocong Yan Dunjie joseph Needham ⅧICHS Milan(1956) Zhoubi suanjing