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Acta Geologica Sinica(English Edition) 1990年第4期64卷 409-425,464页

作者： Hu Zhengguo Qian Zhuangzhi xi’an College of Geology, xi’an 710054, shaanxi Fei Zhenbi xi' an College of Geology Xi' an 710054 Shaanxi 1 Wu Suoping Fan Huimin Feng Heike and Tang Chunpeng students of 1982 class of the Department of Geological Exploration Xi'an College of Geology also took part in part of the field work and primary elaboration of relevant data.

The formation of the Tongyu gold deposit, controlled by regional polyphase *** closely related to the regional composite antiform-shear slip fracture zone. Late-stage reworking of theTaihua Group accounts for the enrichment of ore substances. It is a typical syntectonic gold deposit. The formation and evolution of the deposit involved four stages: (Ⅰ) the state of preparation of ore sub-stances, in which primary source beds originated: (Ⅱ) the stage of remobilization of ore substances, in whichregional progressive metamorphism and migmatization and thermodynamic-chemical differentiation led toremobilization of gold and its initial local concentration: (Ⅲ) the stage of gold deposit formation, in which re-gional folding produced concordant and cross shear-slip fractures and under the dynamic action gold was sepa-rated and migrated in a certain direction and concentrated to form a gold deposit: (Ⅳ) the stage ofsuperpositon, reworking and exposure of orebodies, in which the block uplifted and the deposit againunderwent reworking through faulting and mechanical *** mineralization played adominant role in the formation of the deposit.

关键词： A Discussion of a Model for the Formation of Syntectonic Gold Deposits Formation Mechanism of the Tongyu Gold Deposit,shaanxi Gold

A FINITE DIFFERENCE METHOD FOR THE MODEL OF WHEEZES

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Journal of Computational Mathematics 1995年第2期13卷 123-129页

作者： Lu Bai-nian (Department of Mathematics, shaanxi Normal University, xi’an, shaanxi, China) 陕西师范大学数学系陕西西安

In this paper, a finite difference scheme for the linear and nonlinear models of wheezes are given. The stability of the finite difference scheme for the linear model is obtained by using of von Neumann method. Moreover, the convergence and stability of the finite difference scheme for the nonlinear model are studied by the energy inequalities method. By some numerical computations, the relationships between angular frequency and wall position, fluid speed and amplitude are discussed. Finally, the author shows that the numerical results are coincided with Grotberg's theoretical results.

关键词： Math A FINITE DIFFERENCE METHOD FOR THE MODEL OF WHEEZES

Experimental Study of Air Conditioning Unit of Evaporative Cooling Assisted Mechanical Refrigeration

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湖南大学学报（自然科学版） 2009年第S1期36卷 106-110页

作者： HUANG xiang,XU Fang-cheng,WU Jun-mei(xi’an polytechnic University,xi’an,shaanxi 710048,China) xi'an Polytechnic University Xi'an 710048 China

The evaporative cooling,which assists the refrigeration machinery air-conditioning systems test-rig,has been *** structure and working principle were described,and the performance test was conducted and *** test shows that making full use of the evaporative cooling "free cooling" in Spring and Autumn seasons can fully meet the requirements of air-conditioned comfort through the switch of the function in different *** into account the evaporative cooling fan and pump energy consumption,compared with the traditional mechanical refrigeration system,more than 80 percent of energy can be saved,and the energy efficiency ratio of the Unit(EER)is as high as *** the two stages of indirect evaporative cooling to pre-cool the new wind in summer,under the conditions of the same air supply temperature requirements,0.83 kg/s chilled water saved can be equivalent to the traditional mechanical refrigeration system,and when the new wind ratio up to 50 percent,more than 10 percent load was reduced in mechanical refrigeration *** overall EER increased about 35 percent.

关键词： evaporative cooling mechanical refrigeration air-conditioning unit EER

Fuzzy Evaluation of Thermal Comfort in Naturally Ventilated Residential Buildings in China

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湖南大学学报（自然科学版） 2009年第S1期36卷 71-74页

作者： WANG Yi1,NIU Tian-cai1,LIU Jia-ping2,xiAO Yong-qiang2,3(1.School of Environmental and Municipal Engineering,xi’an University of Architecture and Technology,xi’an,shaanxi 710055,China 2.School of Architecture,xi’an University of Architecture and Technology,xi’an,shaanxi 710055,China 3.School of Physical Education,xi’an University of Architecture and Technology,xi’an,shaanxi 710055,China) School of Environmental and Municipal Engineering Xi'an University of Architecture and Technology Xi'an 710055 China School of Architecture Xi'an University of Architecture and Technology Xi'an 710055 China School of Physical Education Xi'an University of Architecture and Technology Xi'an 710055 China

In order to assess the differences between the human body thermal sensation in naturally ventilated space and that in air-conditioned space,the fuzzy evaluation model was adopted in the research of thermal sensation in naturally ventilated *** on the questionnaires and field measurements,the membership functions were presented by the statistic of the covering frequency to the fuzzy ***-bulb temperature was taken as the only independent variable for membership *** maximum values of membership grades are all at 0.5 or so,which is a distinction character on thermal comfort of naturally ventilated *** the calculating results of membership grades value to different fuzzy evaluation subsets,the Predicted Mean Vote(PMV)was ***,energy coefficient(Ea)was introduced to calculate the energy consumption,and the prediction methods of residential building energy consumption were also ***,the importance of evaluation model of thermal sense is shown through the energy consumption prediction in a specific residential building.

关键词： natural ventilated space thermal sensation fuzzy evaluation membership functions

Short-segment Barrett's esophagus and cardia intestinal metaplasia:A comparative analysis

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World Journal of Gastroenterology 2010年第48期16卷 6151-6154页

作者： Ying Chang,Digestive Endoscopic Center,Shanghai Sixth Hospital,Shanghai Jiao Tong University,Shanghai 200233,China Bin Liu,Department of Emergence Surgery,shaanxi Provincial People’s Hospital,xi’an 710068,shaanxi Province,China Gui-Sheng Liu,Department of Gastroenterology,shaanxi Provincial People’s Hospital,xi’an 710068,shaanxi Province,China Tao Wang,Department of Gastroenterology,First Hospital of xi’ an Jiaotong University,xi’an 710061,shaanxi Province,China Jun Gong,Department of Gastroenterology,Second Hospital of xi’an Jiaotong University,xi’an 710004,shaanxi Province,China Digestive Endoscopic Center Shanghai Sixth Hospital Shanghai Jiao Tong University Yishan Road 600 Shanghai 200233 China. mulan929@***

AIM:To investigate the endoscopy and histology of short-segment Barrett's esophagus (SSBE) and cardia intestinal metaplasia (CIM),and their correlation with Helicobacter pylori (H. pylori) gastritis and gastroesophageal reflux disease (GERD). METHODS:Biopsy specimens were taken from 32 SSBE patients and 41 CIM patients with normal appearance of the esophagogastric junction. Eight biopsy specimens from the lower esophagus,cardia,and gastric antrum were stained with hematoxylin/eosin,Alcian blue/periodic acid-Schiff,Alcian blue/high iron diamine and Gimenez dye. Results were graded independently by one pathologist. RESULTS:The SSBE patients were younger than the CIM patients (P < 0.01). The incidence of dysplasia and incomplete intestinal metaplasia subtype was higher in SSBE patients than in CIM patients (P < 0.01). H. pylori infection was correlated with antral intestinal metaplasia (P < 0.05),but not with reflux symptomatic,endoscopic,or histological markers of GERD in CIM patients. SSBE was correlated with reflux symptomatic and endoscopic esophagitis (P < 0.01),but not with H. pylori infection and antral intestinal metaplasia. CONCLUSION:Dysplasia risk is significantly greater in SSBE patients than in CIM patients. CIM is a manifestation of H. pylori-associated and multifocal atrophic gastritis,whereas SSBE may result from GERD.

关键词： Endoscopy Barrett’s esophagus Cardia intestinal metaplasia Esophagogastric junction Gastroesophageal reflux disease

Applications of Remote Sensing Techniques in Coal Geology

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Acta Geologica Sinica(English Edition) 1989年第3期63卷 253-269页

作者： Guan Haiyan Remote Sensing Geology Centre, Ministry of Coal Industry, xi’an, shaanxi Fei Zhenbi Remote Sensing Geology Centre Ministry of Coal Industry Xi' an Shaanxi

Through applied researches, the regularity of thermal infrared radiation of the coal seams has been found, a model of thermal radiation of the coal seams established, and the internal relations of the information extracted from remote sensing images with coal seams and coal measures revealed. Through a series of complete tests of remote sensing techniques such as multi-level (space, aerial and ground) synchronous remote-sensing and multi-directional, multiband and multitemporal remote sensing, the optimal procedure for applications of remote sensing techniques in coal geology has been determined. The theories and methods established in the applied researches have yielded apparent economic results and social benefits in respect to coal field prediction, coal reconnaissance, coal geological surveys and detection of geological hazards in coal mines.

关键词： Applications of Remote Sensing Techniques in Coal Geology

Effect of non-point source pollution on water quality of the Weihe River

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International Journal of Sediment Research 2011年第1期26卷 50-61页

作者： LI Jiake~(1*),LI Huaien~2,SHEN Bing~3,and LI Yajiao~4 xi’an University of Technology,Key Lab of Northwest Water Resource and Environment Ecology of MOE,xi’an,shaanxi,710048,China xi’an University of Technology,Key Lab of Northwest Water Resource and Environment Ecology of MOE,xi’an,shaanxi,710048,China, xi’an University of Technology,Key Lab of Northwest Water Resource and Environment Ecology of MOE,xi’an,shaanxi,710048,China, School of Architecture and Civil Engineering,xi’an University of Science and Technology,xi’an,shaanxi, 710054,China, Associate Prof. Dr. Xi'an University of Technology Key Lab of Northwest Water Resource and Environment Ecology of MOE Xi'an Shaanxi 710048 China Prof. Dr. Xi'an University of Technology Key Lab of Northwest Water Resource and Environment Ecology of MOE Xi'an Shaanxi 710048 China Dr. School of Architecture and Civil Engineering Xi'an University of Science and Technology Xi'an Shaanxi 710054 China

Non-point source pollution is an important factor that affects the water quality of the Weihe *** study the effect of the pollution on the water quality of the Weihe River,five flood events and three normal discharge events during non-flood period were monitored from July to December in 2006,at the Lin-tong *** order to identify how sediment influenced the water quality of the river,raw and supernatant samples taken from the monitored events were *** samples were siphoned from 5 cm below the water surface of the raw samples at the lab afterwards the raw samples were shaken up and laid for 30 minutes in the *** results indicated that:1) The concentrations of SS,COD,TP and TN in the raw samples from flood events were higher than those from normal discharge *** higher values of the COD,TP and TN in the raw samples resulted from natural humic matters in surface soil.2) The load transport rate of analyzed water quality indexes increased gradually to its maximum and then drop down,matching that in the discharge *** concentrations of SS,NH-N,NO-N,NO-N,COD,and TP in the raw samples increased initially and then decreased,while the concentration of dissolved orthophosphate and TN in the raw samples decreased gradually and then *** peak time of concentration and load transport rate of SS as well as COD,TP and TN in the raw samples were close to or lagged behind the time of peak flow. Generally,the peak time of concentration and load transport rate of dissolved orthophosphate, dissolved total-phosphate,NH-N,NO-N,and NO-N occurred prior to the time of peak flow.3) The mean concentration method was used to calculate the NPS pollution load at Lin-tong section,and the results are *** 2006,the proportions of the NPS pollution load to the total load for COD,TP, TN and inorganic nitrogen were more than 30%.

关键词： Weihe River Non-point source pollution Flood Monitoring Load

Lowered HGK expression inhibits cell invasion and adhesion in hepatocellular carcinoma cell line HepG2

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World Journal of Gastroenterology 2010年第36期16卷 4541-4548页

作者： Su-xia Han,Qing Zhu,Jin-Lu Ma,Jing Zhao,xi Jia,Dan Zhang,Oncology Center of the First Aff iliated Hospital,College of Medicine,xi’an Jiaotong University,xi’an 710061,shaanxi Province,ChinaChen Huang,Central Laboratory,College of Medicine,xi’an Jiaotong University,xi’an 710061,shaanxi Province,China Oncology Center of the First Affiliated Hospital College of Medicine Xi'an Jiaotong University Xi'an 710061 Shaanxi Province China. hsummer22099@***

AIM:To investigate the effects of RNA interference tar-geting hepatocyte progenitor kinase-like kinase(HGK) in the invasion and adhesion of hepatocellular carcinoma(HCC) cell line ***:Three paired insert DNA fragments specif ic to HGK gene and one negative control DNA fragment were synthesized and inserted into RNAi-Ready pSIREN-RetroQ-ZsGreen *** blotting assay and real-time reverse transcriptase polymerase chain reaction(RT-PCR) were used to screen the vector with a highest inhibitory *** vector was used to generate recom-binant retrovirus specif ic to HGK.3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2h-tetrazolium bromide(MTT) assay was used to examine cell growth;wound closure assay and cell adhesion assay were employed to investigate cell migration and adhesion respectively;and transwell assay and three-dimensional culture invasion assay were used to detect cell *** expressions of matrix metalloproteinase(MMP)-2,MMP-9 and nuclear factor(NF)-κB were detected by Western blotting ***:The real time RT-PCR and Western blotting assay showed that cells transfected with retrovirus me-diating RNAi targeting of HGK(RV-shHGK)-1 vector had the strongest inhibition of HGK protein,with an inhibi-tion rate of 76%,and this vector was used to generate recombinant retrovirus *** adhesion assay and MTT assay found that cell adhesion and growth of the cells infected with RV-shHGK-1 were significantly lower than those of the control cells(P < 0.05).Wound closure assay,transwell assay and three-dimensional culture invasion assay showed that the cell invasiveness was significantly less in HGK knockdown cells than in the control cells(P < 0.05).The expressions of MMP-2,MMP-9 and NF-κB were inhibited in HepG2 cells infected with ***:Down-regulation of HGK can obviously inhibit the migration and invasion of HepG2 cells in *** may be a new therapeutic target for treatment of HCC.

关键词： Hepatocellular carcinoma Hepatocyte pro-genitor kinase-like kinase RNA interference Invasion Metastasis

Applications of Remote-Sensing Techniques in Peat Resource Investigations in Zoig■

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Acta Geologica Sinica(English Edition) 1988年第1期1卷 101-112+114页

作者： Fan Shizhong Institute of Geology and Exploration, CCMRI, xi’an, shaanxi Institute of Geology and Exploration CCM RI Xi'an Shaanxi

The paper presents an example of the application of remote-sensing techniques in peat resource investiga-tions. The study was carried out in the Zoige region. The optimal imagery time （during October） and theoptimal band （MSS;） of Landsat data were selected. The preferred images were processed optically and bycomputer and interpreted in a comprehensive way. And in-situ spectrum measurements and drilling verificationwere carried *** identification signature of the peat bogs in Zoige was defined. The feature of the identifi-cation signature for peat was that the peat bog area showed a dark tone with lower reflectance in images of thefour MSS bands. The distribution range of peat bogs in the region was exactly located. The types of peat bogswere distinguished. The total peat area of 4038 km;was defined with a total reserve of 5 billion m;. The resultof the study indicates that the large-area, small-scale investigation of peat resources by use of satelliteremote-sensing data is an advanced method. by which the work efficiency can increase by about 20 times.

关键词： Applications of Remote-Sensing Techniques in Peat Resource Investigations in Zoig

The Relationship between Microtexture Types and Indices of Physico-Mechanical Properties of Loess in China

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Acta Geologica Sinica(English Edition) 1989年第4期63卷 433-443,453页

作者： Lei xiangyi Department of Geology, Northwest University, xi’an, shaanxi

The paper deals mainly with the relationship between the microtexture types and the indices of physicomechanical properties of loess. The results of study demonstrate that the study of microtextures of loess is of imp... 详细信息

关键词： Pro The Relationship between Microtexture Types and Indices of Physico-Mechanical Properties of Loess in China