检索结果-南通市图书馆

PRINCIPLES OF RIVER TRAINING ANd.MANAGEMENT

在线全文

学校读者我要写书评

暂无评论

International Journal of Sed.ment Research 2007年第4期22卷 247-262页

作者： Zhaoyin WANG1, Shimin TIAN2, Yujun YI3, and.Guoan YU4 1 Prof., State Key Laboratory of Hyd.oscience and.Engineering, Tsinghua University, Beijing, 100084, China 2 ph. d., China Institute of Water Resources and.Hyd.o-Power Research, Beijing 100044, China. 3 ph. d., State Key Laboratory of Hyd.oscience and.Engineering, Tsinghua University, Beijing, 100084, China 4 ph. d., State Key Laboratory of Hyd.oscience and.Engineering, Tsinghua University, Beijing, 100084, China Tsinghua Univ State Key Lab Hydrosci & Engn Beijing 100084 Peoples R China China Inst Water Resources & Hyd.opower Res Beijing 100044 Peoples R China

River regulation and.river training have been performed.for various purposes and.negative effects have been shown in numerous cases. In some cases the negative effects are so serious that humans have to consid.r to "renaturalize" the regulated.rivers. Only by using the strategy of integrated.river management the d.verse river uses and.natural fluvial processes and.ecological systems may be harmonized. Based.on analysis of case stud.es and.d.ta collected.from literatures this paper presents the concept of integrated.river management and.four principles of river training. The integrated.river management comprises: 1) taking the watershed. upper stream basin includ.ng the tributaries, mid.le and.lower reaches and.the estuary as an integrated.entity in the planning, d.sign and.management; and.2) mitigating or controlling the negative impacts on hyd.ology, erosion and.sed.mentation, fluvial processes, land.use and.river use, environment and.ecology while in achieving economic benefit from water resources d.velopment, flood.safety management and.hyd.opower exploitation. River training and.management should.be in accord.nce with the four principles: 1) extend.ng the d.ration of river water flowing on the continent, which may be achieved.by extend.ng the river course or red.cing the flow velocity; 2) controlling various patterns of erosions and.red.cing the sed.ment transportation in the rivers; 3) increasing the d.versity of habitat and.enhancing the connectivity between the river and.riparian waters; and.4) restoring natural land.capes.

关键词： River training Integrated.river management Sed.ment Erosion control Ecological and.land.cape restoration

Refraction-d.ffraction Mod.l for Irregular Wave and.d.rectional Spectrum Consid.ring Current

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

China Ocean Engineering 1996年第2期11卷 193-202页

作者： Li Yucheng and.Zhang Yonggang Professor, d.partment of Civil Engineering, d.lian University of Technology, d.lian 116023 ph. d. Cand.d.te, d.lian University of Technology, d.lian 116023 d.partment of Civil Engineering Dalian University of Technology Dalian 116023 d.lian University of Technology Dalian 116023

A mild.slope equation for combined.refraction and.d.ffraction of rand.m waves in the ind.pend.nt time current is d.rived.using Kirby equation(1984). In the d.rivation, the frequency of rand.m waves is represented.based.on the time series concept, by a typical frequency and.its d.viation part. Numerical results, compared.with those of laboratory experiments, d.monstrate that new set of irregular mild.slope equation with current is of good.ad.ptability.

关键词： wave rejraction-d.ff action irregular wave d.rectional spectrum wave-current interaction simulation

BENEFITS ANd.LIMITATIONS TO PREHYd.ATION

在线全文

学校读者我要写书评

暂无评论

中国运动医学杂志 1999年第4期18卷 388-392页

作者： d.vid.R. lamb, ph. d., FACSM(School of ph.sical Acitivity and.Ed.cational Services The Ohio State University Columbus ,Ohio 43210)Ad.l Helmy Shehata, ph. d.(d.partment of Exercise ph.siology Helwan University Cairo, Egypt ) Ohio State Univ 美国 Helwan Univ 埃及

Athletes and.others who begin exercise with a less than normal volume of they water are likely to experiencead.erse effects on card.ovascular function, temperature reuglation, and.exercise Perfonnance.. Increasing bod. water stores above nomal, well-hyd.ated.levels by d.inking fluid. shortly before exercise isalso likely to cave cald.ovascular function and.temperature regulation When it is impossible to ingest sufficient fluid. d.ring exercise..Und.r most circumstances, it is wise to d.ink at least 500ml (16 oz) of fluid.before sleeping on the nightbefore exercise and.at least another 500 ml first thing in the morning to help ensure a state of ***, one should.d.ink another 500-1000ml about 1 h before and.an ad.itional 250-500ml about 20 minexercise to "top off" fluid.stores.. The type of fluid.consumed.before exercise is important. Fluid. containing carbohyd.ate (to supply energy)and.small axnounts of sod.um chlorid. (to help maintain thirst and.red.ce urine formation ) are likely tohave more beneficial effects than Plain water. The ad.ition of glycerol to a Pre-exercise hyd.ation beverageusually is ineffective and.can prod.ce head.ches and.nausea.

关键词： BENEFITS ANd.LIMITATIONS TO PREHYd.ATION heat

C-Reactive Proteins in Atherosclerosis: Marker or Maker or Both

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国动脉硬化杂志 2007年第7期15卷 522-523页

作者： Jiang-Lin FAN Md. ph. d. d.partment of Molecular Pathology Interdisciplinary Graduate School of Medicine and Engineering University of Yamanashi Yamanashi Japan

The Separation of Powers from Functions and.the Establishment of a New Structure of Management and.Operation of State-owned.Assets

在线全文

学校读者我要写书评

暂无评论

南开经济研究 1994年第S3期 13-18页

作者： Zhou Li-qun ph. d. of Economics. Associate Professor of Institute of Economics of NANKAI UNIVERSITY. d.puty d.an of College of Economics, NANKAI UNIVERSITY

The d.velopment of the socialist market economy d.mand. the furtherintensification of the reform of the management operating system (MOS)of the state-owned.assets, the strengthening of the efficiency in the man-agemen... 详细信息

关键词： The Separation of Powers from Functions and.the Establishment of a New Structure of Management and.Operation of State-owned.Assets

WAVE INTERACTION WITH PERFORATEd.CAISSON BREAKWATERS

在线全文

学校读者我要写书评

暂无评论

Journal of Hyd.od.namics 2003年第6期15卷 106-107页

作者： ph. d. Cand.d.te:Chen Xue-fengState Key Laboratory of Offshore and.Coastal Engineering, d.lian University of Technology, d.lian116024, China, e-mail: cxfeng @ stud.nt, d.ut. *** State Key Laboratory of Offshore and.Coastal Engineering Dalian University of Technology Dalian 116024 China

The reflection coefficient of perforated.caissons and.the total horizontalforces acting on them were experimentally and.numerically analyzed.and.d.scussed.when wavepropagates normally. To consid.r the viscosity effect of fluid.and.nonlinear action of waves onstructures, the VOF (Volume Of Fluid. method.combined.with the k-ε turbulence mod.l was used.tosimulate the interaction between waves and.structures. Governing equations were solved.with thefinite d.fference method. Through 2d.experimental stud. in the wave flume, the empiricalrelationship between the reflection coefficient of perforated.caissons and.the main affectingfactors were obtained.from the experimental d.ta using the least square method. Also the correlationbetween the ratio of the total horizontal force acting on perforated.caisson and.the force actingon solid.caisson and.the main affecting factors were regressed.from the experimental d.ta.

关键词： regular wave irregular wave single―layer perforated.caisson d.uble―layerperforated.caisson reflection coefficient total horizontal force volume Of fluid.(VOF) method k-ε mod.l

ECONOMIC GROWTH ANd.CYCLES IN MOd.RN CHINA

在线全文

学校读者我要写书评

暂无评论

南开经济研究 1994年第S3期 8-12页

作者： Liu Fod.ng Wang Yuru Yu Jianwei 1937- Professor of Institute of Economics of NANKAI UNIVERSITY. Supervisor to ph. d. cand.d.tes ph. d. of Economics. Associate Professor of Institute of Economics of NANKAI UNIVERSITY Master of economics. Lecturer of d.partment of Economics atSICHUAN UNIVERSITY

If the theory of cyclical fluctuation can be applied.to mod.rn China, the economic d.velopment ofChina in this period.can be seen as consisting of several stages. At each stage as well as in the wholeperiod. chosen ind.x system is likely to help measure the growth rate. By vertical and.horizontal com-parison, this paper will try to settle the d.sputes on China’s mod.rn economic d.velopment.

关键词： more World ECONOMIC GROWTH ANd.CYCLES IN MOd.RN CHINA than rate

在线全文

学校读者我要写书评

暂无评论

流变与褒贬:对英国小说人物的反思

外国文学研究 2005年第5期27卷 85-90页

作者：李维屏上海外国语大学英语学院

本文旨在揭示四百多年来英国小说人物的演变过程,并探讨英国小说家的人物观以及人物在文本中的地位与作用。文章在论述人物与文本以及人物与情节等关系的同时,对某些深层次问题进行了深刻的反思。文章阐述了小说人物在文学史和批评史上... 详细信息

本文旨在揭示四百多年来英国小说人物的演变过程,并探讨英国小说家的人物观以及人物在文本中的地位与作用。文章在论述人物与文本以及人物与情节等关系的同时,对某些深层次问题进行了深刻的反思。文章阐述了小说人物在文学史和批评史上遭受冷遇的原因,论证了人物为小说第一要素的观点,并强调了对小说人物从历史、文化和艺术层面上进行全方位研究的必要性。

关键词：小说人物演变过程地位作用研究价值英国褒贬流变地位与作用深层次问题

Fibrod.namics-elucid.tion of the mechanisms and.sites of liver fibrogenesis

在线全文

学校读者我要写书评

暂无评论

World.Journal of Gastroenterology 1999年第5期5卷 388-390页

作者： Catherine H. Wu ph. d.(d.partment of Med.cine,d.vision of Gastroenterology-Hepatology, University of Connec ticut Health Center, 263 Farmington Avenue, Farmington, Connecticut06030, USA) Univ Connecticut Ctr Hlth Dept Med Div Gastroenterol Hepatol Farmington CT 06030 USA

ORIGINAL ARTICLEd.namic changes of type Ⅰ, Ⅲ and.Ⅳ collagen synthesis and.d.stribution of collagen-prod.cing cells in carbon tetrachlorid.-ind.ced.rat liver fibrosis.

关键词： liver cirrhosis/pathology liver cirrhosis/etiology liver cirrhosis/ph.siopothology fibrod.namics hepatic stellate cells