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小孤山水电站地下厂房布置方案确定和设计

水电能源科学 2010年第8期28卷 80-82,85页

作者：杨捷甘肃省水利水电勘测设计研究院甘肃兰州730000

基于小孤山水电站工程的地形和地质条件,阐述了小孤山水电站采用地下厂房方案的原因及地下厂房布置原则,确定了地下厂房的位置、纵轴线方向和厂区枢纽的总体布置。实例结果表明,该工程总体布置紧凑,且兼顾施工运行,既缩短了施工工期,又... 详细信息

基于小孤山水电站工程的地形和地质条件,阐述了小孤山水电站采用地下厂房方案的原因及地下厂房布置原则,确定了地下厂房的位置、纵轴线方向和厂区枢纽的总体布置。实例结果表明,该工程总体布置紧凑,且兼顾施工运行,既缩短了施工工期,又节约了工程投资,为西北干旱半干旱地区地下式发电厂房的设计提供借鉴。

关键词：小孤山水电站水电站地下厂房布置方案设计 Hydropower Station Power 西北干旱半干旱地区总体布置水电站工程轴线方向施工工期工程投资发电厂房地质条件厂区枢纽厂房方案布置原则地下式运行位置

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改进灰色预测模型在灌溉用水量建模中的应用

节水灌溉 2008年第12期 49-50,56页

作者：张宝泉俞宏杨国军甘肃省水利厅讨赖河流域水利管理局甘肃酒泉735000 甘肃省水利水电勘测设计研究院甘肃兰州730000 甘肃省酒泉市肃州区水务局甘肃酒泉735000

灌溉用水量系统受诸多不确定性因素的影响,采用灰色预测方法对甘肃省灌溉用水量进行建模分析。通过对灰色GM(1,1)模型的预测精度的分析表明,GM(1,1)预测公式系数的选取存在缺陷。因此基于残差和为零准则,就预测公式系数C的选取问题提出... 详细信息

灌溉用水量系统受诸多不确定性因素的影响,采用灰色预测方法对甘肃省灌溉用水量进行建模分析。通过对灰色GM(1,1)模型的预测精度的分析表明,GM(1,1)预测公式系数的选取存在缺陷。因此基于残差和为零准则,就预测公式系数C的选取问题提出新的计算方法,并对系数修正前后的模型分别建模。结果表明:改进灰色模型预测灌溉用水量与实际用水量更接近、精度更高。

关键词：灰色预测模型系数预测精度灌溉用水量

Thermodynamic Analysis of Desulfurization and Its Connection With Deoxidation and Temperature for SPHC in JISC During LF Refining Process

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Journal of Iron and Steel Research International 2011年第S2期18卷 135-140页

作者： GUO Jing1, CHENG Zi-jian1,2, CHENG Shu-sen1, CHENG Ze-wei1, ZOU Ming2, MA Ming-sheng2 (1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology of Beijing, Beijing 100083. china 2. china’s Hongxing Stock Company of Jiugang,Jiugang 73.000,{3.,china) Univ Sci & Technol Beijing State Key Lab Adv Met Beijing 100083 Peoples R China chinas Hongxing Stock Co Jiugang Jiugang 735000 Gansu Peoples R China

The thermodynamic characteristics of desulfurization reaction (CaO)+[S]=(CaS)+[O] is analyzed based on the detailed composition of liquid steel and slag of Steel Plate Hot Commercial (SPHC) in Jiuquan Iron & Steel Corporation(JISC), where the activities of CaO, CaS and Al2O3.in molten slag are calculated by thermodynamic software FactSage for a more accurate result. The critical values of [O%]/[S%] for desulfurization at different temperature is are obtained, typically 0.09 at 1873., which shows directly that it should deoxidize adequately for obtaining a favorable desulfurization condition. In addition, the thermodynamic analysis indicates that the actual dissolved O is much higher than that of equilibrium calculation which shows Al-O reaction in LF is far away from equilibrium, but it is perfect agreement with the computing results when taking the activity of Al2O3.as 1 that due to the inclusion component in LF is mainly Al2O3. Besides, with the temperature rise, the sulfur partition ratio increases softly meanwhile the reaction between Al and O is limited to a great degree resulting in the increase a dissolved oxygen in liquid steel that decreases the sulfur partition ratio seriously. As a result, the sulfur partition ratio appears to decrease with temperature increase in Al killed steel.

关键词： LF refining desulfurization deoxidation sulfur partition ratio

Cu50Zr42Al8块状非晶合金的变温晶化行为研究

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特种铸造及有色合金 2008年第6期28卷 420-421页

作者：寇生中屠鹏边红霞赵吉鹏高忙忙张玲兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室甘肃农业大学理学院

研究了Cu50Zr42Al8大块非晶合金在连续升温过程中的晶化行为。结果表明,随升温速度的加快,玻璃转变温度Tg、晶化起始温度Tx、晶化峰值温度Tp都向高温区移动,过冷温度区△Tx扩大;运用Kissinger法分别计算出玻璃转变激活能Eg为417.19kJ/mo... 详细信息

研究了Cu50Zr42Al8大块非晶合金在连续升温过程中的晶化行为。结果表明,随升温速度的加快,玻璃转变温度Tg、晶化起始温度Tx、晶化峰值温度Tp都向高温区移动,过冷温度区△Tx扩大;运用Kissinger法分别计算出玻璃转变激活能Eg为417.19kJ/mol、晶化起始激活能Ex为3.2.18kJ/mol、晶化峰的激活能Ep为3.7.70kJ/mol;并运用FWO法计算晶化阶段激活能Ex,随晶化量的增大,阶段激活能呈逐渐减小的趋势,且在最初的阶段(晶化量小于5%),激活能迅速减小。分析表明,Cu50Zr42Al8块体非晶合金具有良好的热稳定性。

关键词：大块非晶晶化激活能

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以科学发展观推进金昌市防震减灾事业发展

西北地震学报 2005年第4期27卷 394-396页

作者： earthquake Administration of Jinchang City(earthquake Administration of Jinchang City,Jinchang gansu 73.100,{3.) 金昌市地震局甘肃金昌73.100

前言金昌市位于河西走廊中东部,近年来一直被中国地震局列为全国地震重点监视防御区和重点危险区,同时又是甘肃省政府确定的防震减灾十年目标首批达标城市之一,防震减灾工作任务艰巨.

关键词：金昌防震减灾发展

幽门螺杆菌尿素酶B基因的克隆表达及活性测定

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中国兽医科学 2013年第3期43卷 283-288页

作者：蔡靓李克生杜惠芬付宝权李文卉曲自刚谢志宙甘肃农业大学动物医学院甘肃兰州730070 甘肃省医学科学研究院医学生物中心甘肃兰州730050 中国农业科学院兰州兽医研究所家畜疫病病原生物学国家重点实验室农业部兽医公共卫生重点开放实验室甘肃省动物寄生虫病重点实验室甘肃兰州730046

为研究幽门螺杆菌(Hp)尿素酶B(UreB)的免疫学活性,采用PCR方法扩增Hp UreB基因,经双酶切构建表达载体pET28a-UreB,转化大肠杆菌BL21(DE3.感受态细胞,经过IPTG诱导进行表达,用纯化后的重组蛋白免疫BALB/c小鼠,ELISA检测血清抗体效价,并... 详细信息

为研究幽门螺杆菌(Hp)尿素酶B(UreB)的免疫学活性,采用PCR方法扩增Hp UreB基因,经双酶切构建表达载体pET28a-UreB,转化大肠杆菌BL21(DE3.感受态细胞,经过IPTG诱导进行表达,用纯化后的重组蛋白免疫BALB/c小鼠,ELISA检测血清抗体效价,并使用感染患者血清进行Western-blot鉴定。结果显示,扩增的Hp UreB基因序列与GenBank中的26 695标准株序列相比较核苷酸序列同源性达到96.73.,氨基酸序列同源性高达99.3.%,SDS-PAGE分析发现表达的重组蛋白分子质量约为66ku,以可溶性形式存在。Western-blot结果显示重组UreB能被Hp感染患者血清特异性识别,同时,用纯化后的UreB蛋白免疫小鼠能诱导产生特异性体液免疫应答,表明UreB具有很好的免疫原性。试验证明表达出具有生物活性的UreB蛋白,为Hp快速检测方法的研究奠定了基础。

关键词：幽门螺杆菌尿素酶B亚单位原核表达免疫原性

Millennial-scale monsoonal climatic change from paleosol sequences on the Chinese western Loess Plateau and Tibetan Plateau: a brief summary and review

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Chinese Science Bulletin 1999年第S1期44卷 38-52页

作者： FANG Xiao-Min LI Ji-Jun Department of Geography, lanzhou University, lanzhou, gansu {3., PR china

This paper summarizes the work from the INQUA 1997 Project "Response of soilformation to short-warm-episodes of Asian summer monsoon" and its seeded related internationaland domestic grants. It reviews the effects of the millennial monsoonal changes on the loess-paleosols of the Chinese Loess and Tibetan Plateaus. High-resolution proxy records ofpedogenesis and monsoons demonstrate that both Asian winter and summer monsoons wereunstable and synchronously and inversely coupled during the last glaciation. During that timerapid episodic cycles of cold surges and warm enhancements spanned only ca. 1-2 ka in high-frequency domain. Sub-Milankovitch cycles (6-8 ka) of progressive cooling or weakening in low-frequency domain generally resembled the pattern of the North Atlantic climatic change. However,during the last interglacial, Asian winter and summer monsoons seemed to vary independently, theformer being stable and the later unstable. Soil formation seems to occur in surprisingly fastresponse to the summer monsoon warm enhancements, resulting in weakly or moderatelydeveloped paleosol sequences. North Atlantic and polar cold air surges though the westerlies andother paths, and the north-south swing of the westerlies beside the Tibetan Plateau, may be thealternative mechanisms for the rapid monsoonal changes during the last glacial. But in the lastinterglacial, the summer monsoons worked largely independently.

关键词： Monsoon instability loess-paleosol sequence pedogenesis Tibetan Plateau

Translator's Subjectivity in Feminism Translation Theory

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海外英语 2012年第3X期 145-146页

作者： WANG Ning 1,2 (1.College of Foreign Languages and Literatures, Northwest Normal University, lanzhou 73.070, china 2.School of Foreign Language, gansu Lianhe Universi ty,{3., china) College of Foreign Languages and Literatures Northwest Normal University Lanzhou 730070 China School of Foreign Language Gansu Lianhe University Lanzhou 730000 China

Feminism Translation Theory, arising in the 1980s, offers a fresh perspective in translation practice ,which thoroughly emphasiz es the translator's subjectivity. Meanwhile, this theory also presents certain limitatio... 详细信息

关键词： feminism translation review

BIFURCATIONS FROM STATIONARY TO PERIODIC STATES AND TWO KINDS OF LOW-FREQUENCY OSCILLATIONS OF SUBTROPICAL FLOW PATTERNS

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Science in china,Ser.B 1987年第3期30卷 304-315页

作者：李麦村罗哲贤 Institute of Atmospheric Physics Academia Sinica Beijing Meteorological Institute of gansu province lanzhou

A parameterization for convective heating is introduced into the diabatic term of a two-layer, low-or-der spectral model for estimating the effects of moist convection on bifurcations fro mstationary to period-ic states of flow patterns. In certain parameter combinations, thermal forcing with the parameterizationcan generate bifurcations from stationary to periodic states. However, the forcing without it does not ex-cite such bifurcations. The time scales corresponding to their periodic states are about two-three *** other parameter combinations, the thermal forcing either with or without the convective heating cangenerate the bifurcations from stationary to periodic states; but the effects of convective heating shortenthe time scales and accelerate the amplifications of the excited periodic oscillations. The instabilities of the stationary states, which represent a uniform distribution of the subtropicalflow pattern at the upper layer of the model atmosphere, may form two kinds of low-frequency os

关键词： high