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肿瘤 2003年第6期23卷 445-447页

作者： RISCH harvey Md. Ph d Professor at the department of Epidemiology and Public Health Professor at the Department of Epidemiology and Public Health Yale University School of Medicine New Haven Connecticut 06520 USAYale University School of Medicine New Haven Connecticut 06520 USA

Pancreatic cancer is a not-infrequent cause of cancer death, ranking below only lung, prostate or breast, and colorectal cancer in many countries. Germline mutations and chronic pancreatitis have been implicatd in a small fraction of cases. Cigarette smokin is the one established risk factor for this disease, however its underlying mechanism of action is uncertain. We have proposed in the etiology the synergistic involvement of dietary or other N-nitrosamine or N-nitrosamide exposures, and of conditions of chronic excess gastric or duodenal acidity. Chronic low-level hyperchlorhydria is induced by colonization by Helicobacter pylori, under host inflammatory cytokine phenotypes that do not suppress gastric acid production. The objective of this report is to review physiologic and epidemiologic evidence implicating N-nitrosamines, Helicobacter pylori and inflammatory cytokine variants in causing pancreatic cancer.

关键词：胰腺癌预后病因遗传多态性

Silvicultural alternatives to conventional even-aged forest man-agement-what limits global adoption?

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Forest Ecosystems 2015年第2期2卷 123-138页

作者： Klaus J Puettmann Scott McG Wilson Susan C Baker Pablo J donoso Lars dr?ssler Girma Amente Brian d harvey Thomas Knoke Yuanchang Lu Susanna Nocentini Francis E Putz Toshiya Yoshida Jürgen Bauhus department of Forest Ecosystems and Society Oregon State University Consultant Forester and Forest Ecologist School ofBiological Sciences University of Tasmania department of Forests and Society Faculty of Forest Sciences and Natural Resources Universidad Austral de Chile Southern Swedish Forest Research Centre Swedish Agricultural University Haramaya University Institut de recherche sur les forêts Université du Québec en Abitibi-Témiscamingue 445 Boulevard de l’Université Institute of Forest Management TUMSchool of Life Sciences Weihenstephan Technische Universit?t München department of Forest Management and Statistics IFRIT Chinese Academy of Forestry department of Agricultural Food and Forestry Systems University of Florence department of Biology University of Florida Uryu Experimental Forest Field Science Center for Northern Biosphere Hokkaido University Chair of Silviculture Faculty of Environment and Natural Resources University of FreiburgTennenbacherstr

Background： The development of forestry as a scientific and management discipline over the last two centuries has mainly emphasized intensive management operations focused on increased commodity production, mostly wood. This conventionar＇ forest management approach has typically favored production of even-aged, single-species stands. While alternative management regimes have generally received less attention, this has been changing over the last three decades, especially in countries with developed economies. Reasons for this change include a combination of new information and concerns about the ecological consequences of intensive forestry practices and a willingness on the part of many forest owners and society to embrace a wider set of management objectives. Alternative silvicultural approaches are characterized by a set of fundamental principles, including avoidance of clearcutting, an emphasis on structural diversity and small-scale variability, deployment of mixed species with natural regeneration, and avoidance of intensive site-preparation methods. Methods： Our compilation of the authors＇ experiences and perspectives from various parts of the world aims to initiate a larger discussion concerning the constraints to and the potential of adopting alternative silvicultural practices. Results： The results suggest that a wider adoption of alternative silvicultural practices is currently hindered by a suite of ecological, economic, logistical, informational, cultural, and historical constraints. Individual contexts display their own unique combinations and relative significance of these constraints, and accordingly, targeted efforts, such as regulations and incentives, may help to overcome specific challenges. Conclusions： In a broader context, we propose that less emphases on strict applications of principles and on stand structures might provide additional flexibility and facilitate the adoption of alternative silvicultural regimes in a broader set of circumstanc

关键词： Natural Regeneration Forest Owner Stand Structure Commodity Production Private Landowner

Small C++ how to program 5th ed.

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development of the nervous system 二

丛书名：国外计算机科学教材系列

2010年

作者： deitel harvey M.

本书详细介绍了C++面向对象编程的核心概念和方法。与前几版相比, 本书从内容和结构上都做了较大幅度的修订和有意义的提升, 语言的表达更为清晰、准确和标准, 特别是在“尽早接触类和对象”这一观点的指导下, 从第1章就开始涉及类和对... 详细信息

ISBN: (纸本)9787894647016

本书详细介绍了C++面向对象编程的核心概念和方法。与前几版相比, 本书从内容和结构上都做了较大幅度的修订和有意义的提升, 语言的表达更为清晰、准确和标准, 特别是在“尽早接触类和对象”这一观点的指导下, 从第1章就开始涉及类和对象的内容, 从而突破了传统教学程序, 使学生直接“考虑对象”和更彻底地掌握面向对象的基本概念。

关键词： C++ (Computer program language)

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丛书名：科爱传播.

2007年

作者： Sanes dan harvey

"导读版."

ISBN: (纸本)9787900224019

"导读版."

关键词： developmental neurophysiology.

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C语言大学教程 4

Inactivation of Mitochondrial Complex Ⅰ Induces the Expression of a Twin Cysteine Protein that Targets and Affects Cytosolic, Chloroplastidic and Mitochondrial Function

丛书名：国外计算机科学教材系列

2012年

作者：（美）Paul deitel （美）harvey deitel

1817040302

ISBN: (数字)9787121152214

ISBN: (纸本)9787121152214

1817040302

关键词：教材 C语言高等学校程序设计

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Molecular Plant 2016年第5期9卷 696-710页

作者： Yan Wang Wenhui Lyu Oliver Berkowitz Jordan d. Radomiljac Simon R. Law Monika W. Murcha Chris Carrie Pedro F. Teixeira Beata Kmiec Owen duncan Olivier Van Aken Reena Narsai Elzbieta Glaser Shaobai Huang Ute Roessner A. harvey Millar James Whelan department of Animal Plant and Soil Science Australian Research Council Centre of Excellence in Plant Energy Biology School of Life Science La Trobe University Bundoora VIC 3086 Australia Ume(a)Plant Science Centre(UPSC) Faculty of Science and Technology Ume(a)University Ume(a) Sweden Australian Research Council Centre of Excellence in Plant Energy Biology University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia department of Biology I Botany Ludwig-Maximilians-Universitat Munchen Groβhaderner Strasse 2-4 82152 Planegg-Martinsried Germany department of Biochemistry and Biophysics Stockholm University Atrhenius Laboratories for Natural Sciences 10691 Stockholm Sweden School of BioSciences The University of Melbourne Melbourne VIC 3010 Australia

At12Cys-1 （At5g64400） and At12Cys-2 （At5g09570） are two closely related isogenes that encode small, twin cysteine proteins, typically located in mitochondria. At12Cys-2 transcript is induced in a variety of mutants with disrupted mitochondrial proteins, but an increase in At12Cys protein is only detected in mutants with reduced mitochondrial complex I abundance. Induction of At12Cys protein in mutants that lack mitochondrial complex I is accompanied by At12Cys protein located in mitochondria, chloroplasts, and the cytosoh Biochemical analyses revealed that even single gene deletions, i.e., At12cys-1 orAtl2cys-2, have an effect on mitochondrial and chloroplast functions. However, only double mutants, i.e., At12cys-1：At12cys.2, affect the abundance of protein and mRNA transcripts encoding translation elongation factors as well as rRNA abundance. Blue native PAGE showed that At12Cys co-migrated with mitochondrial supercomplex I ＋ lU. Likewise, deletion of both At12cys-1 and At12cys-2 genes, but not single gene deletions, results in enhanced tolerance to drought and light stress and increased anti-oxidant capacity. The induction and multiple localization of At12Cys upon a reduction in complex I abundance provides a mechanism to specifically signal mitochondrial dysfunction to the cytosol and then beyond to other organelles in the cell.

关键词： mitochondria complex I retrograde signaling chloroplast cytosol

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射流泵在含沙水流中抗磨损性能优化

排灌机械工程学报 2020年第2期38卷 109-114页

作者：邹晨海李红 THOMPSON harvey KHATIR Zindine 向清江江苏大学国家水泵及系统工程技术研究中心江苏镇江212013 利兹大学机械学院利兹英国LS29JT

为减小射流泵装置在含沙水流中运行时射流泵遭到的磨损破坏,对射流泵的抗磨损性能进行优化.首先提出了一种经济有效的材料表面磨损情况预测方法,再利用该方法得到抗磨损性能最佳的参数组合.结合粒子垂直撞击平板试验与数值模拟结果,得... 详细信息

为减小射流泵装置在含沙水流中运行时射流泵遭到的磨损破坏,对射流泵的抗磨损性能进行优化.首先提出了一种经济有效的材料表面磨损情况预测方法,再利用该方法得到抗磨损性能最佳的参数组合.结合粒子垂直撞击平板试验与数值模拟结果,得到在特定材料(316L不锈钢)下的磨损等高线图,并通过不同喷嘴出口速度的垂直撞击平板试验对磨损等高线图的通用性进行了试验验证,结果证实该方法可用于预测.通过Plackett-Burman试验设计得到显著影响材料磨损情况的射流泵参数,利用d-optimal试验设计得到性能最佳的射流泵参数组合.结果表明:当射流泵的参数组合为喷嘴角度39.85°、面积比5.84、喷嘴直径18 mm时,射流泵的抗磨损性能和水力性能都达到最佳,即最大磨损深度8.6μm、效率16.8%.根据最佳参数组合加工射流泵样机,验证了预测结果的可靠性,并通过扫描电镜对喷嘴处的磨损疤痕进行观察,结论与数值模拟分析结果一致.

关键词：射流泵磨损试验设计预测方法

A Comparison of Bending Properties for Cellular Core Sandwich Panels

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Materials Sciences and Applications 2013年第8期4卷 471-477页

作者： Li Yang Ola Harrysson harvey West denis Cormier department of Industrial & Systems Engineering North Carolina State University Raleigh USA department of Industrial & Systems Engineering Rochester Institute of Technology Rochester USA department of Industrial Engineering University of Louisville Louisville USA

In this study, various sandwich panel structures with different reticulate lattice core geometries were designed and then fabricated in titanium via the electron beam melting (EBM) process. Bending tests were performed on the titanium samples, and mechanical properties such as modulus, bending strength, and energy absorption were evaluated. different failure mechanisms were observed, and it was found that sandwich structures with auxetic cores exhibited more homogeneous deflection and bending compliance compared with other structures. It was also demonstrated that properties of auxetic sandwich structures can be tailored using different cell structure geometries to suit the needs of a given design application. Furthermore, it was found that other 3d cellular sandwich structures can also exhibit high stiffness and strength, which is desirable in potential applications.

关键词： Auxetic Structure Cellular Structure Sandwich Panels Electron Beam Melting Bending Properties

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Get the Job You Want

语言教育 1996年第8期 33-37页

作者： harvey B.Mackay 郑愿华

I run a manufacturing company with about 350 employees,and I often do the interviewing and hiring myself.I like talking topotential salespeople,because they’re our link to *** a recent college graduate came into my office not toolong ago looking for a sales job,I asked him what he had done toprepare for the *** said he’d read something about

关键词： interview something talking college looking graduate asked getting thinking doing