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三峡库区坡地资源优化利用模式与途径

山地学报 2005年第2期23卷 197-202页

作者：廖和平邓旭升卢艳霞西南师范大学资源与环境科学学院中国科学院地理科学与资源研究所中国科学院地理科学与资源研究所重庆400715 北京100101

三峡库区土地资源以山丘地为主,耕地又以坡旱地为主。其中>2.5°的陡坡耕地为2.6 7×10 4hm2.,占库区耕地总量的18.2.%。研究表明,三峡库区粮食产量的5 6 %来自坡耕地,同时库区泥沙量的6 6 %也来自坡耕地。三峡大坝蓄水,移民后靠安置,... 详细信息

三峡库区土地资源以山丘地为主,耕地又以坡旱地为主。其中>2.5°的陡坡耕地为2.6 7×10 4hm2.,占库区耕地总量的18.2.%。研究表明,三峡库区粮食产量的5 6 %来自坡耕地,同时库区泥沙量的6 6 %也来自坡耕地。三峡大坝蓄水,移民后靠安置,对坡耕地利用的压力更大。坡地资源的优化利用,在库区农业生产、移民安置,以及生态环境建设方面都具有重要的意义和价值。基于土地资源优化利用原理和生态设计的理念,提出库区土地资源优化利用应突出生态效益、经济主导、产业协调、区域特色等4种模式,并针对当前库区土地资源利用中的主要问题,提出了相应的优化利用途径和对策

关键词：土地资源山坡耕地优化利用三峡库区

Water Environmental Degradation of the Source Area of the Yellow river on Northeast Qinghai-Tibet Plateau

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Chinese Journal of Population,Resources and Environment 2005年第3期3卷 34-36页

作者： Qi Shanzhong 1, Luo Fang 2.& Xiao Honglang 2.1 College of Population, Resources and Environment, Shandong Normal university, Jinan 2.0014, china 2.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academic of Sciences, Lanzhou, 730000, china College of Population Resources and Environment Shandong Normal University Jinan 250014 China Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academic of Sciences Lanzhou 730000 China

The issue on water environmental degradation in the source area of the Yellow river has been one of very serious ecological and socially economic problems. The temporal-spatial changes of water environment led to the decreasing of land capacity and river disconnecting. The status of water environmental degradation in this paper was analyzed based on the data and field investigation. The results indicated that the surface water area in the region has obviously decreased owing to the climate changes and human irrational use of water resources and the continuous lowering of the regional groundwater table and the steadily decreasing tendency of the flow rate in the source areas of the Yellow river.

关键词： water environmental degradation decreasing of surface water continuous lowering of groundwater table the Yellow river region Qinghai- Tibet Plateau

Implantation of neurosphere derived from murine malignant glioma cell line GL2.1 into C57/BL6 mice: A reliable syngeneic graft model for research on glioma-initiating cells in vivo

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Implantation of neurosphere derived from murine malignant gl...

Neurotensin expressed by glioma-initiating cells affects clinical outcome in glioma patients

2.11中华医学会神经外科学学术会议

作者： Liang Yi1 ,2.Minhui Xu1 Hua Feng2.1.Department of Neurosurgery, Daping Hospital, Third Military Medical university, chongqing, 4 0004 2.,{2. 2.Department of Neurosurgery, Southwest Hospital, Third Military Medical university, chongqing, 4 0004 2.,{2.

Objective Glioma-initiating cells (GICs) have been proven to play key roles in initiation and progress of malignant glioma. However, a mass of pervious in vivo studies were based on the heterograft model which is impl... 详细信息

关键词： glioma cancer stem cells GL2.1 transplanted tumor

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Neurotensin expressed by glioma-initiating cells affects cli...

Moore-Smith Convergence in L-Fuzzifying Topological Spaces

2.11中华医学会神经外科学学术会议

Objective Malignant glioma is the most common and fatal tumor in central nervous system, with the poor prognosis even with the advanced treatments. Seeking new prognostic factors and molecular targets may contribute t... 详细信息

关键词： neurotensin glioma cancer stem cells

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Journal of Mathematical Research and Exposition 2011年第5期31卷 770-780页

作者： Wei YAO1,2. Ling Xia LU3 1. College of Mathematics and Information Science, Shaanxi Normal university, Shaanxi 710062. P. R. china 2. College of Science, Hebei university of Science and Technology, Hebei 050018, P. R. china 3. School of Mathematics and Science, Shijiazhuang university of Economics, Hebei 050031, P. R. china College of Mathematics and Information Science Shaanxi Normal University College of Science Hebei University of Science and Technology School of Mathematics and Science Shijiazhuang University of Economics

This paper presents a definition of L-fuzzifying nets and the related L-fuzzifying generalized convergence spaces. The Moore-Smith convergence is established in L-fuzzifying topology. It is shown that the category of L-fuzzifying generalized convergence spaces is a cartesianclosed topological category which embeds the category of L-fuzzifying topological spaces as a reflective subcategory.

关键词： L-fuzzifying topology L-fuzzifying filter L-fuzzifying net L-fuzzifying generalized convergence space topological category cartesian-closed.

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业余少儿体操训练三角形管理模式的实验研究

西南师范大学学报（自然科学版） 2002年第4期27卷 604-606页

作者：龚坚唐华西南师范大学体育学院重庆400715 重庆市第八中学校重庆400030

运用实验方法 ,提出并验证了三角形管理模式在业余少儿体操训练中的积极作用 .实验表明 ,在业余少儿体操训练过程中运用三角形模式进行管理 ,可以有效提高训练效果 ,有利于运动员再次选材 ,促进少儿健康地发展 .

关键词：业余少儿体操训练三角形管理模式实验研究业余体育训练训练管理专项素质

cDNA cloning,sequence analysis,and recombinant expression of akitonin beta,a C-type lectin-like protein from Agkistrodon acutus

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Acta Pharmacologica Sinica 2004年第03期25卷 118-123页

作者： Xiang-dong ZHA1,2.Jing LIU1,Kang-sen XU3 1 School of Life Science,university of Science and Technology,Hefei 2.002. School of Life Science,Anhui university,2.Hefei 2.0039 National Institute for Control of Pharmaceuticals and Biological Products,Beijing 100050,{2. 3 School of Life Science University of Science and Technology School of Life Science Anhui University National Institute for Control of Pharmaceuticals and Biological Products Beijing 100050 China

AIM: To clone the cDNA of a new member of snake venom C-type lectin-like proteins, to study its structure- function relationships and to achieve its recombinant production. METHODS: PCR primers were designed based on the homology and cDNA was amplified by RT-PCR using total RNA from snake venom gland as the template. The PCR products were cloned into the plasmid pGEM-T and sequenced. The deduced protein sequence was analyzed with some bioinformatic programs. A recombinant expression plasmid was constructed using pBAD- TOPO as vector and transformed into *** TOP10 competent cells. RESULTS: A novel cDNA sequence encod- ing akitonin β was found and accepted by GenBank (accession number AF387100). Akitonin β consists of a typical carbohydrate recognition domain (CRD) of C-type lectins, and it is homologous with other snake venom C-type lectin-like proteins. It was predicted to be a platelet antagonist. Upon induction with arabinose rAkitonin β express- ing in E coli was achieved at a high level (superior to 150 mg/L). The recombinant fusion protein exhibited inhibitory activities on rat platelet aggregation in vitro. CONCLUSION: A new member of snake venom C-type lectin-like proteins was discovered and characterized, and an efficient recombinant expression system was estab- lished for its production.

关键词： snake venoms cDNA akitonin C-type lectin-like proteins recombinant proteins structure- activity relationship

QTL molecular marker location of powdery mildew resistance in cucumber (Cucumis sativus L.)

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Science china(Life Sciences) 2008年第11期51卷 1003-1008页

作者： LIU LongZhou1,2. CAI Run1, YUAN XiaoJun1, HE HuanLe1 & PAN JunSong1 1 School of Agriculture and Biology, Shanghai jiaotong university, Shanghai 2.02.0,{2. 2.Horticultural Research Institute, Shanghai Academy of Agricultural Sciences( (SAAS)), Shanghai Key Lab of Protected Horti-cultural Technology, Shanghai, 2.1106,{2. 1. School of Agriculture and Biology Shanghai Jiaotong University Shanghai 200240 China 2. Horticultural Research Institute Shanghai Academy of Agricultural Sciences (SAAS) Shanghai Key Lab of Protected Horticultural Technology Shanghai 201106 China

The cucumber lines, S94 (Northern china open-field type, powdery mildew (PM) susceptible) and S06 (European greenhouse type, PM resistant), and their F6:7 populations were used to investigate PM re-sistance under seedling spray inoculation in 2.05/Autumn and 2.06/Spring. QTL analysis was under-taken based on a constructed molecular linkage map of the corresponding F6 population using com-posite interval mapping. A total of four QTLs (pm1.1, pm2.1, pm4.1 and pm6.1) for PM resistance were identified and located on LG 1, 2. 4 and 6, respectively, explaining 5.2.-2..0% of the phenotypic variation. Three consistent QTLs (pm1.1, pm2.1 and pm4.1) were detected under the two test conditions. The QTL pm6.1 was only identified in 2.05/Autumn. The total phenotypic variation explained by the QTLs was 52.0% and 42.0% in 2.05/Autumn and 2.06/Spring, respectively. Anchor markers tightly linked to those loci (<5 cM) could lay a basis for both molecular marker-assisted breeding and map-based gene cloning of the PM-resistance gene in cucumber.

关键词： cucumber powdery mildew QTL F6:7families seedling

Performance evaluation of oil displacing agents for primary-minor layers of the Daqing Oilfield

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Petroleum Science 2011年第1期8卷 79-86页

作者： Zhang Jian Wang Shuxia Lu Xiangguo He Xianhua School of Petroleum Engineering China University of PetroleumBeijing 102249China School of Petroleum Engineering Northeast Petroleum UniversityDaqingHeilongjiang 163318China Information Section E＆D Research Institute of Daqing OilfieldDaqingHeilongjiang 163712China

A series of experiments were conducted to investigate the molecular coil dimension（D_h） and molecular configuration of partially hydrolyzed polyacrylamides（HPAM）,surfactant/HPAM system, and a living *** between the polymer coils and the porous media was evaluated by instrumental analysis and laboratory simulation ***,the performance of chemical flooding was *** indicated that the D_h decreased with an increase in water salinity and increased with an increase in polymer *** aqueous solution,the polymer presented three-dimensional reticular configuration and exhibited a fractal structure characterized by self-similarity. The polymer in the surfactant/HPAM system was mainly in the form of＂surfactant-polymer＂complex compound and the living polymer had an irregular＂flaky-reticular＂configuration which resulted in relatively poor compatibility between the molecular coils and the porous *** type of oil displacing agent and its slug size influenced the incremental oil *** the same oil displacing agent,a larger slug size would lead to a better chemical flooding *** the final recovery efficiency and economic benefits,high-concentration polymer flooding was selected as the optimimal enhanced oil recovery（EOR） technique and the incremental recovery efficiency was forecast to be 2.%.

关键词： Primary-minor layers molecular coil dimension molecular configuration compatibility