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Preliminary results of the study on wind erosion in the Qinghai-Tibetan Plateau using 13.Cs technique

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Chinese Science Bulletin 2000年第11期45卷 1019-1025页

作者： YAN Ping, DONG Guangrong, ZHANG Xinbao & ZHANG Yiyun1. Key Laboratory of environmental Change and Natural Disaster, the Ministry of Education of China, beijing Normal {2., beijing 100875, China 2. Institute of Desert Research, Chinese Academy of sciences, Lanzhou 73.000, China 3. Institute of Mountain Hazards and Environment, Chinese Academy of sciences, Chengdu 610041, China 4. department of Physics, Sichuan Union {2., Chengdu 610041, China Key Laboratory of environmental Change and Natural Disaster the Ministry of Education of China Beijing Normal University Beijing China Institute of Desert Research Chinese Academy of Sciences Lanzhou China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu China department of Physics Sichuan Union University Chengdu China

The worldwide fallout of caesium-13. (13.Cs) associated with the nuclear weapon tests during the 1950s and 1960s has provided a valuable man-made tracer for studies of soil erosion and sediment delivery. But relatively few researchers have used it to estimate wind erosion. In this note, the 13.Cs technique is introduced into the studies of wind erosion and its modern processes inthe Qinghai-Tibetan Plateau. Two 13.Cs reference inventories of 982.11 and 2.3.6.04 Bq · m-2.wereestablished preminarily, distributed in the south and middle-north parts of the studied arearespectively. By analyzing the patterns of 13.Cs depth profiles from sampling sites, the aeolianprocesses of erosion and deposition in nearly 40 years have been revealed, i.e. the shrub coppicedunes (S1) and semi-fixed dunefields (S3. experienced the alternation of erosion and deposition,while the grasslands (S4, S6 and S7) and dry farmlands (S5) suffered erosion only. By using 13.Csmodel, the average wind erosion rates for shrub coppice

关键词： 13.Cs technique Qinghai-Tibetan Plateau wind erosion.

The reconstruction of fossil planation surface in Chin

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Chinese Science Bulletin 2002年第5期47卷 434-440页

作者： FENG Jinliang & GUI Zhijiudepartment of Urban and environmental {2.,{3., beijing 100871, China Institute of Geography, Hebei Academy of {2., Shijiazhuang 050011, China department of Urban and environmental {2. Peking University Beijing China Institute of Geography Hebei Academy of Sciences Shijiazhuang China

On the basis of results of relative subjects, the fossil planation surface has been discussed by the authors from the point of geomorphologic view. The discussion contents included the characteristic information, research methods, paleotopography (gradient and altitude) and other problems about fossil planation surface. The recognition and reconstruction of fossil planation surface mainly rely on the following characteristic information: (i) the character of erosion unconformity surface; (ii) the paleo-weathering crust and residual deposits; (iii) the paleo-karst and filled deposit in the paleo-karst under the unconformity surface, and (iv) the character and environment of sediment above the unconformity surface. According to the above-mentioned characteristic information, the authors recognized and reconstructed two stages of fossil planation surface on Pa-leo-land of North China and Yangtze Paleo-land. These two fossil planation surfaces formed from Middle Ordovician to Lower Carboniferous and from

关键词： fossil planation surface characteristic information pa-leotopography reconstruction.

Xylene-induced Effects on Brain Neurotransmitters, Behavior and Fos Protein in Rats

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Biomedical and environmental sciences 1999年第2期12卷 116-124页

作者： WANG XIU-LUNG JIN XI-PENG FU HUA CHEN ZI-QING DA CUI-DI HUANG XIAN-FEN DING BAO-QING (Institute of occupational Medicine, Chinese Academy of Preventive Medicine,2. Nan Wei Road, beijing 100050, China Deprtment of occupational {3., school of public health, Shanghai Medical university, Shanghai 2.003., China National Key Laboratory of Neurobiolegy, Shanghai Medical university Institute of occupational Diseases, Yumen Oil Administration, Gansu Province, China) Institute of occupational Medicine Chinese Academy of Preventive Medicine Beijing Chin

Male Sprague-Dawley rats administered xylene intrapetitoneally on alternate days at a dose of 12. or 2.0mg/kg for 3. days exhibited no marked changes in locomotor activity, learning and memory capacity. However in rats given xylene on alternate day at a dose of 500 mg/kg for 3. days, a significant decrease in locomotor activity, deficits in leaming ability and memory loss were detected. These xylene-induced behavioral ehanges were assoryiated with a decrease in fyendorphin and leuenkaphlin concentrations in the pons-medulla. On the contrary, xylene at a dose of 500mg/kg increased the β-endorphin level in caudate and c-fos expression in hippocampus. These data suggest that the xylene-induced behavioral alterations might be associated with the expression of Fos protein in the hippocampus.

关键词： Behavior and Fos Protein in Rats Xylene-induced Effects on Brain Neurotransmitters Fos

Effects of the CNTF-collagen gel-controlled delivery system on rat neural stem/progenitor cells behavior

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Science China(Life sciences) 2010年第4期53卷 504-510页

作者： YANG ZhaoYang1, QIAO Hui2.& LI XiaoGuang1,3.1school of Biological Science and Medical Engineering, Beihang {2., {2. 100191, China 2.3. Heath school, Ningxia Medical {2., Yinchuan 750004, China 3.2. Institute for Neuroscience, Capital Medical {2., {2. 100069, China 1. school of Biological Science and Medical Engineering Beihang University Beijing 100191 China2. Public Heath School Ningxia Medical University Yinchuan 750004 China3. Beijing Institute for Neuroscience Capital Medical University Beijing 100069 China

The injury of central nervous system (CNS) usually causes the cavity formation. Although transplantation of neural stem/precursor cells (NSPCs) into the lesioned area of CNS has been shown to be implicated in the functional restoration, the therapeutic result is limited by the poor survival of NSPCs as well as their insufficient proliferation and differentiation abilities. Type-1 collagen is considered as a candidate scaffold or drug delivery system to overcome the aforementioned obstacle. This study observed the effects of the CNTF (ciliary neurotrophic factor)-collagen gel-controlled delivery system and daily addition of soluble-form CNTF on the NSPC survival, migration, proliferation and differentiation. The results showed that, within 12.h of the initial co-culture, CNTF was released in a burst pattern, then the CNTF-collagen gel-controlled delivery system stably released CNTF for up to 12.d. The cell viability test, together with immunohistochemistry, RT-PCR and Western blotting, showed that the CNTF-collagen gel-controlled delivery system supported the NSPCs seeded on the surface of collagen gel survival and facilitated their migration and proliferation. The daily addition of soluble-form CNTF to the medium had similar effects to the CNTF-collagen gel-controlled delivery system, but large quantities of soluble-form CNTF were consumed during the entire process. Taken together, the CNTF-collagen gel-controlled delivery system not only provides a physical scaffold for the transplanted NSPCs to adhere and migrate, but also facilitates the NSPC survival, growth and proliferation, simultaneously reducing the consumption of the expensive growth factors. This system may be used to enhance the microenvironment in the lesioned area of CNS.

关键词： spinal cord neural stem/progenitor cells control release type-1 collagen CNTF

A new method for comprehensive division of mountainous area: taking Huaihua City as an example

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Journal of Geographical sciences 2001年第3期11卷 366-373页

作者： HU Bao-qing1, REN Dong-ming2. ZHANG Hong-en1, LIAO Chi-mei3.(1. Changsha Institute of Geotectonics, CAS, Changsha 410013. China 2. {2. of Resource and environmental {2., {3. Normal university, {3. 100875, China 3. {2. of Ge Changsha Institute of Geotectonics CAS department of Resource and environmental {2. Beijing Normal University department of Geography Guangxi Normal College

This paper summarizes principles and measures of comprehensive division of mountainous areas, as well as clarifies meaning, structure, function and path established for the map and file information visibility system (MFIVS). And then, taking Huaihua City of Hunan Province as an example, and based on the MFIVS means, concrete attempts on regionalization are carried out. The result is relatively objective and accurate, which illuminates that the method is a comprehensive one with the characteristics of concision, applicability and effectiveness.

关键词： comprehensive division regional system of mountainous area map and file information visibility system (MFIVS) comprehensive evaluation of PRED system Huaihua City

Study on Iron Nutritional Status in Adolescence

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Biomedical and environmental sciences 1990年第1期3卷 113-119页

作者： CAI MEI-QIN AND YAN WEN-YU department of Nutrition and Food Hygiene, school of public health.Shanghai Medical {2., Shanghai, China department of Nutrition and Food Hygiene School of Public Health Shanghai Medical University China.

A study on iron-deficiency anemia (IDA) in adolescence was conducted among 478 teen-age students in Shanghai. The study indicated that the intake of nutrients among the students was generally insufficient. The lack of protein, calcium, Vitamin A, Vitamin B_1, and Vitamin B_2.was more serious. The morbidities of IDA among male and female students were 15.8 and 3..6%, respectively, higher in the female group (Pschool performance. However, the speed and endurance capabilities of students of both sexes were correlated directly with hemoglobin level. In female students, the speed capability was correlated directly with the serum ferritin content. On the basis of these findings, a special 3.month school lunch program was initiated. The results indicate that a comprehensive, rational, and balanced diet is beneficial to hemoglobin, free erythrocyte porphyrin, and serum ferritin contents and improves adolescent development. 1990 Academic Press. Inc.

关键词： Study on Iron Nutritional Status in Adolescence

Histological observation of some primitive euconodonts of Late Cambrian from Liaoning

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Progress in Natural Science:Materials International 2005年第12期15卷 1084-1088页

作者： GUO Wei,DONG Xiping,ZENG Xiaochun and ZHAO Le department of Geology,College of environmental Science,{2. {3.,beijing 100871,China department of Geology College of Environmental Science Peking University Beijing 100871 China. College of environmental Science Peking University Beijing 100871 China

The histology of some euconodonts of Late Cambrian from Benxi and Fuxian County,Liaoning Province is studied by the oil-immersion *** histological characteristics of six primitive species of euconodonts - Proconodontus muelleri,Proconodontus tenuiserratus,Granatodontus ani,Rotundoconus tricarinatus,Teridontus nakamurai and Cordylodus proavus are described in *** dentine and atubular (parallel- and wavy-lamellar) dentine are found in the basal bodies of the primitive euconodonts Proconodontus tenuiserratus and Proconodontus muelleri,*** tubular dentine and spherulitic dentine are also recognized from the basal bodies of Granatodontus ani and Rotundoconus *** the histological characteristics of the studied six species of euconodonts belonging to Proconodontus lineage and Teridontus lineage Sensu Miller (Univ Kansas Paleontol Contr,1980,99: 1-3.) seems to be almost the same,euconodonts are proposed as possibly monophyletic herein.

关键词： histology primitive euconodonts Late Cambrian Liaoning

Establishment of bovine prion peptide-based monoclonal antibodies for identifying bovine prion

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Science China(Life sciences) 2009年第8期52卷 754-760页

作者： ZHAO Li1,HOU XinSheng5,JI Rong2.HAN ChunHui2.YU XiuPing3.HONG Tao4,5 1 department of Laboratory Science of Microbiology,{2. of {2. {3.,Shandong university,Jinan 2.0012.China 2.Institute of Nutrition and Food Safety,Chinese Center of Disease Prevention and Control,beijing 10002.,China 3.department of Microbiology,{2. of Medicine,Shandong university,Jinan 2.0012.China 4 Institute of Virus Disease Prevention and Control,Chinese Center for Disease Control and Prevention,beijing 100052.China 5 Institute of Biological Science and Technology,{2. of Science,beijing Jiaotong university,beijing 100044,China department of Laboratory Science of Microbiology School of Public Health Shandong University Jinan 250012 China Institute of Nutrition and Food Safety Chinese Center of Disease Prevention and Control Beijing 100021 China department of Microbiology School of Medicine Shandong University Jinan 250012 China Institute of Virus Disease Prevention and Control Chinese Center for Disease Control and Prevention Beijing 100052 China Institute of Biological Science and Technology School of Science Beijing Jiaotong University Beijing 100044 China

To obtain high titer monoclonal antibodies(McAbs) which can react with mammalian prion protein(PrP),Balb/C mice were immunized with bovine(Bo) PrP peptide(BoPrP 2.9-2.8 aa) coupled to keyhole limpet hemocyanin(KLH).The hybridoma cell lines secreting monoclonal antibodies against the peptide were established by cell fusion and *** obtained McAbs were applied to detect recombinant human,bovine and hamster PrP,cellular prion protein(PrPc) in normal bovine brain and pathogenic scrapie prion protein(PrPSc) accumulated in the medulla oblongata of bovine spongiform encephalopathy(BSE)specimen with Western blot and immunohistochemical detection,*** current procedure might offer a simple,feasible method to raise high titer antibodies for studying biological features of PrP in mammals,as well as detection of transmissible spongiform encephalopathy(TSE) and diagnosis of BSE,in particular.

关键词： prion monoclonal antibody Western blot immunohistochemistry ELISA

Retrieving crop leaf area index by assimilation of MODIS data into a crop growth model

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Science China Earth sciences 2010年第5期53卷 721-730页

作者： WANG DongWei1,2.3. WANG JinDi1,2.& LIANG ShunLin4 1 State Key Laboratory of Remote Sensing Science, Jointly Sponsored by beijing Normal {2. and Institute of Remote Sensing Applications, CAS, beijing 100875, China 2.{3. of Geography, beijing Key Laboratory of environmental Remote Sensing and Digital City, beijing Normal {2., beijing 100875, China 3.Haihe River Water Conservancy Commission, Tianjin 3.0170, China 4 {12. of Geography, {2. of Maryland, College Park, MD 2.742. USA 1. State Key Laboratory of Remote Sensing Science Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing Applications CAS Beijing 100875 China2. School of Geography Beijing Key Laboratory of Environmental Remote Sensing and Digital City Beijing Normal University Beijing 100875 China3. Haihe River Water Conservancy Commission Tianjin 300170 China4. Department of Geography University of Maryland College Park MD 20742 USA

Leaf area index (LAI) is an important parameter in monitoring crop growth. One of the methods for retrieving LAI from remotely sensed observations is through inversion of canopy reflectance models. Many model inversion methods fail to account for variable LAI values at different crop growth stages. In this research, we use the crop growth model to describe the LAI changes with crop growth, and consider a priori LAI values at different crop growth stages as constraint information. The key approach of this research is to assimilate multiple canopy reflectance values observed at different growth stages and a priori LAI values into a coupled crop growth and radiative transfer model sequentially using a variational data assimilation algorithm. Adjoint method is used to minimize the cost function. Any other information source can be easily incorporated into the inversion cost function. The validation results show that the time series of MODIS canopy reflectance can greatly reduce the uncertainty of the inverted LAI values. Compared with MODIS LAI product at Changping and Shunyi Counties of beijing, this method has significantly improved the estimated LAI temporal profile.

关键词： inversion leaf area index crop growth model time series MODIS