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The　Numerical　modelling　of　Two－dimensional　Unsteady　Flow　in　Open　Channel　with　Double－line　Bridge

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Journal of Hydrodynamics 1994年第2期6卷 1-7页

作者： Wang Hua-rong Liu You-lu Chu Yan-dong(Department of Basic Courses, lanzhou Railway Institute, lanzhou,gansu 73.070,P.R.{3. )

In this paper the velocity field and water level height of two- dimensional unsteady flow in open channel with double-line bridge are modelled with finite difference method of alternate *** ADI method is modified according to the rapidly changed speed of the *** empirical formulas are reasonably chosen at the inner-boundary,the calculating steadiness is increased and the calculating results improved. These are closer to real data.

关键词： numerical modeling,boundary conditons velocity field water stage

Theorem of turbulent intensity and macroscopic mechanism of the turbulence development

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Science china Earth Sciences 2007年第5期50卷 789-800页

作者： HU YinQiao1,2, CHEN JinBei3.4 & ZUO HongChao2 1 gansu province Key laboratory of Arid Climatic Change and Reducing Disaster, Cold and Arid Regions Environment and Engi- neering Institute, Chinese Academy of Sciences, lanzhou 73.000,{3. 2 State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Beijing 100029,{3. 3.Atmospheric Science College, lanzhou University, lanzhou 73.000,{3. 4 Resource Environment Department, lanzhou Agriculture University, lanzhou 73.060,{3. 1. gansu province Key laboratory of Arid Climatic Change and Reducing Disaster Cold and Arid Regions Environment and Engineering Institute Chinese Academy of Sciences Lanzhou 730000 China 2. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC) Beijing 100029 China 3. Atmospheric Science College Lanzhou University Lanzhou 730000 China 4. Resource Environment Department Lanzhou Agriculture University Lanzhou 730060 China

Turbulence is one of the most common nature phenomena in everyday experience, but that is not adequately understood yet. This article reviews the history and present state of development of the turbulence theory and indicates the necessity to probe into the turbulent features and mechanism with the different methods at different levels. Therefore this article proves a theorem of turbulent transpor- tation and a theorem of turbulent intensity by using the theory of the nonequilibrium thermodynamics, and that the Reynolds turbulence and the Rayleigh-Bénard turbulence are united in the theorems of the turbulent intensity and the turbulent transportation. The macroscopic cause of the development of fluid turbulence is a result from shearing effect of the velocity together with the temperature, which is also the macroscopic cause of the stretch and fold of trajectory in the phase space of turbulent field. And it is proved by the observed data of atmosphere that the phenomenological coefficient of turbulent in- tensity is not only a function of the velocity shear but also a function of temperature shear, viz the sta- bility of temperature stratification, in the atmosphere. Accordingly, authenticity of the theorem, which is proved by the theory of nonequilibrium thermodynamics, of turbulent intensity is testified by the facts of observational experiment.

关键词： turbulence nonequilibrium thermodynamics linear thermodynamics atmosphere boundary layer Reynolds turbulence Rayleigh-Bénard turbulence

兰新铁路风沙区提速改建工程对水土流失的影响及防治措施

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水土保持通报 2004年第4期24卷 67-70页

作者：陈家琪甘肃省水土保持科学研究所甘肃兰州730021

西北戈壁荒漠区生态环境十分脆弱,以风蚀为主的水土流失非常严重;随着经济的发展该区域的道路建设也在加速发展,建设项目和生态环境保护一直是一对难以解决的矛盾,也是长期以来人们一直关注的焦点问题。针对上述问题对兰新铁路"百里风区... 详细信息

西北戈壁荒漠区生态环境十分脆弱,以风蚀为主的水土流失非常严重;随着经济的发展该区域的道路建设也在加速发展,建设项目和生态环境保护一直是一对难以解决的矛盾,也是长期以来人们一直关注的焦点问题。针对上述问题对兰新铁路"百里风区"提速改建工程项目的水土流失及防治措施进行了探讨和研究。

关键词：兰新铁路风沙区提速改建工程水土流失防治措施

Water transfer characteristics during methane hydrate formation and dissociation processes inside saturated sand

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Journal of Natural Gas Chemistry 2010年第1期19卷 71-76页

作者： Peng Zhang, Qingbai Wu, Yibin Pu, Guanli Jiang, Jing Zhan, Yingmei Wang State Key Laboratory, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, lanzhou 73.000, gansu, china [a] State Key Laboratory Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 Gansu China

Gas hydrates formation and dissociation processes inside porous media are always accompanied by water transfer behavior, which is similar to the water behavior of ice freezing and thawing processes. These processes have been studied by many researchers, but all the studies are so far on the water transfer characteristics outside porous media and the water transfer characteristics inside porous media have been little known. In this study, in order to study the water transfer characteristics inside porous media during methane hydrate formation and dissociation processes, a novel apparatus with three pF-meter sensors which can detect water content changes inside porous media was applied. It was experimentally observed that methane hydrate formation processes were accompanied by water transfer from bottom to top inside porous media, however, the water behavior during hydrate dissociation processes was abnormal, for which more studies are needed to find out the real reason in our future work.

关键词： methane hydrate formation and dissociation processes: water transfer inside porous media saturated

Preliminary lnvestigations on the Medicinal Plants of Anemone in gansu

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Journal of Chinese Pharmaceutical Sciences 1995年第3期4卷 165-166页

作者： $$$$ Wen Wang,SupervisorRu-Neng ZhaoSchool of Pharmacy, lanzhou Medical Collegelanzhou, gansu {3..

ＰｒｅｌｉｍｉｎａｒｙＩｎｖｅｓｔｉｇａｔｉｏｎｓｏｎｔｈｅＭｅｄｉｃｉｎａｌＰｌａｎｔｓｏｆＡｎｅｍｏｎｅｉｎＧａｎｓｕＦｏｒＭａｓｔｅｒ＇ｓＤｅｇｒｅｅＷｅｎＷａｎｇ，Ｓｕｐｅｒｖｉｓｏｒ：ＰｒｏｆＲｕ－Ｎｅｎｇ... 详细信息

ＰｒｅｌｉｍｉｎａｒｙＩｎｖｅｓｔｉｇａｔｉｏｎｓｏｎｔｈｅＭｅｄｉｃｉｎａｌＰｌａｎｔｓｏｆＡｎｅｍｏｎｅｉｎＧａｎｓｕＦｏｒＭａｓｔｅｒ＇ｓＤｅｇｒｅｅＷｅｎＷａｎｇ，Ｓｕｐｅｒｖｉｓｏｒ：ＰｒｏｆＲｕ－ＮｅｎｇＺｈａｏＳｃｈｏｏｌｏｆＰｈａｒｍ...

关键词：银莲花分类学生药学微量元素

Photooxidation of α-Tocopherol in Micelles. A New Singlet Oxygen Oxidation Product

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Chinese Chemical Letters 1998年第9期9卷 823-826页

作者： Wei YU Li YANG Zhong Li LIU (National Laboratory of Applied Organic Chemistry, lanzhou Universitylanzhou, gansu {3.) lanzhou Univ Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China

Methylene blue sensitized singlet oxygen oxidation of dl-α-tocopherol in dodecylsulfate (SDS) or cetyl trimethyl ammonium brondde (CTAB) ndcelles led to the formation, besidesα-tocopherol quinone and its epoxide, of a hitherto unknown spiro compound 6-hydroxy-2,6,8,9-tetramethyl-2-phytyl- 1-oxaspiro [4, 5] dec -8 - en - 7, 10-dione.

关键词： α-tocopherol singlet oxygen 6-hydroxy-2,6,8,9-tetramethyl-2-phytyl-1-oxaspiro-dec-8-en-7,10-dione

An Improved Traitor Tracing Scheme Based on Bilinear Map

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Wuhan University Journal of Natural Sciences 2007年第1期12卷 5-8页

作者： ZHANG Xuejun School of Education Technology and Communication Northwest Normal University Lanzhou 730070 Gansu China

T6 et al presented a bilinear-map-based traitor tracing scheme（TSZ scheme） with revocation, but it is a symmetric scheme because it does not provide non-repudiation. In this paper, an improved TSZ scheme was proposed by using oblivious polynomial evaluation （OPE） protocol and service parameters. Under the recondition of general sameness capabilities of both TSZ and improved TSZ scheme, the new scheme adds some advantages such as providing multi-service capability, user＇s non-repudiation and data provider＇s no-framing innocent users. Furthermore, it is also proved to be semantically secure under the decisional bilinear Diffie-Hellman （DBDH problem） assumption.

关键词： bilinear map traitor tracing multi-service asymmetry

Intensity Distribution of Jingtai Ms 6.2 earthquake in 1990 and Causative Fault

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earthquake Research in china 1994年第1期8卷 52-62页

作者： Hou Kangming,Zhang Shoujie and Yao TongfuSeismological Institute of lanzhou,SSB,lanzhou 73.000,{3.,china

A Ms 6.2 strong earthquake occurred at 16:07 on October 20,1990 in a juncture of the three counties of Jingtai,Tianzhu,Gulang in gansu *** observations indicate that the macroseismic epicenter lies from Xiatang to Daquanwan and that its geographical location is at 3.°07’N and 103.3..5’*** epicentral intensity is Ⅷ *** meizoseismal region,covering about 20 km-,is an elliptical area with its long axis orienting *** the circled areas with the earthquake intensity from VI to Ⅷ degree,the formation cause of high intensity(Ⅷ)anomalous area appeared in the Ⅶ area has been discussed in this *** to the data of direct aftershock area,epicentrai intensity area,focal mechanism solution and the direction of the ground motion,etc.,this strong earthquake was caused by latest sinistral lateral movement of Laohushan fault that has been the most active fault since the Holocene.

关键词： epicenter aftershock Holocene houses anomalous elliptical covering geographical disaster strike

The research of three-dimensional numerical simulation of groundwater-flow: taking the Ejina Basin, Northwest china as example

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Research in Cold and Arid Regions 2009年第3期1卷 238-248页

作者： Qi Feng 1,2, HaiYang Xi 1, Wei Liu 1,3. JianHua Si 1,2, ZongQiang Chang 1,2, YongHong Su 1,2 1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, lanzhou, gansu 73.000,{3.. 2. Alashan Desert Eco-hydrology Experimental Research Station, lanzhou, gansu 73.000,{3.. 3. State Key Laboratory of Hydrosciences and Engineering, Tsinghua University, Beijing 100084,{3.. Chinese Acad Sci Cold & Arid Reg Environm & Engn Res Inst 320 West Donggang Rd Lanzhou 730000 Gansu Peoples R China Alashan Desert Ecohydrol Expt Res Stn Lanzhou 730000 Gansu Peoples R China Tsinghua Univ State Key Lab Hydrosci & Engn Beijing 100084 Peoples R China

Water is a primary controlling factor for economic development and ecological environmental protection in the inland river basins of arid western china. And it is groundwater, as the most important component of total water resources, that plays a dominant role in the development of western china. In recent years, the use-ratio of surface water has been raised, the groundwater recharge rate from surface water has been reduced, and groundwater has been exploited on a large scale. This has led to the decline of ground-water levels and the degradation of eco-environments in the Heihe watershed. Therefore, the study on the change in groundwater levels in recent years, as well as simulating and predicting groundwater levels in the future, have become very significant for im-proving the ecological environment of the Heihe River Basin, to coordinate the water contradiction among upper, middle and lower reaches of Heihe River Basin and to allocate the water resources. The purpose of this study is to analyze the groundwa-ter-level variations of the Ejina region based on a large scale, to develop and evaluate a conceptual groundwater model in Ejina Basin, to establish the groundwater flow model using the experimental observation data and combining Modular Three-Dimensional Groundwater Flow Model (MODFLOW) and GIS software, to simulate the regional hydrologic regime in re-cent 10 years and compare various water-delivery scenarios from midstream, and to determine which one would be the best plan for maintaining and recovering the groundwater levels and increasing the area of Ejina oasis. Finally this paper discusses the pos-sible vegetation changes of Ejina Basin in the future.

关键词： groundwater flow model Ejina Basin MODFLOW Heihe River