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Spatial Organization Mechanism of Aircraft Manufacturing

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chinese Journal of Population,Resources and Environment 2010年第1期8卷 62-70页

作者： Dong Yan1,2,Chu Bo1,3 1.Institute of Geographic sciences and Natural Resources Research,CAS,beijing 100101,china 2.graduate university of chinese academy of sciences,beijing 100049,china 3.Fujian Provincial Department of Foreign Trade and Economic Cooperation,Fuzhou Fujian 350003,china Institute of Geographic sciences and Natural Resources Research CAS Beijing 100101 China graduate university of chinese academy of sciences Beijing 100049 China Fujian Provincial Department of Foreign Trade and Economic Cooperation Fuzhou Fujian 350003 China

Unquestionably,aircraft industry plays an important part in both economy and security of a ***,few of articles have dealt with the spatial development of this industry *** purpose of this article is to analyze the dynamics of agglomeration and diffusion of aircraft *** a historical view,with some spatial analysis methods,this research discusses the characteristics and patterns of aircraft industry's spatial organization and evolution,globally,nationally and regionally *** find out there is a ‘Matthew effect' in aircraft industry of the world,and the spatial evolution of the industry is consistent with the nation's industrialization ***,it concludes that the main agglomeration forces consist of capital,talents,technology and cluster's advantages,and the main diffusion forces include comparative advantages,cost and risk sharing,emerging markets,development policy for backward regions and military *** the factors can be divided into market forces making the spatial development of aircraft industry normal and non-market forces making that *** particular,lessons from the USA and France are expected to be conducive to the rise of china's aircraft industry in the future.

关键词： aircraft manufacturing diffusion agglomeration spatial evolution

Dynamics of the Coordination of Economy-Society and Resource-Environment in Shandong Peninsula,china

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chinese Journal of Population,Resources and Environment 2012年第3期10卷 62-71页

作者： Han Rongqing Zhao Minghua Institute of Geographic sciences and Natural Resources Research CASBeijing 100101China graduate university of chinese academy of sciences Beijing 100049China Population Recourses and Environment College of Shandong Normal UniversityJinan Shandong 250014China

Shandong Peninsula,as a more developed region in Shandong Province even the east coast of china,is facing challenges from resources and environment *** paper tried to track and assess the coordination status and the dynamic between resource-environment and economy-society systems in Shandong Peninsula during 2001-2008 in order to provide decision support for regional *** appraisal index system was built including five aspects of harmony degree(A),sustainability degree(B),opening degree(C),stability degree(D) and controllability degree(E).The results showed that:1) The coordination level of resource-environment and economy-society in Shandong Peninsula has continuously grown,and it has undergone three stages:no coordinated degree(2001-2002),weak coordinated degree(2003-2006) and basically coordinated degree(2007-2008).2) Five indexes of criterion hierarchy also increased overall,but each index showed different *** degree,sustainability degree and opening degree rose all the time,while stability degree and controllability degree alternately rose and *** improvement of controllability degree was the slowest.3) The aggravating trend of environmental pollution was slowing *** economic growth was driven by industrial growth and urbanization typically and investment was still the main force to pull the regional economic *** the same time,technology and education were becoming more and more important for economic *** level of foreign capital utility declined and the geographical advantage of Shandong Peninsula was *** some characteristics of knowledge economy were *** resources become the main constraint factor of fast development in Shandong *** is necessary to further strengthen the coordination ability of government on regional sustainable development.

关键词： dynamics coordination of resource-environment andeconomy-society Shandong Peninsula

Analysis on Carbon Emissions from Energy Consumption in Agriculture and Reduction Measures in Guangdong Province

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Meteorological and Environmental Research 2011年第7期2卷 66-69,73页

作者： XIE Shu-juan1,2,3 1.Guangzhou Institute of Geochemistry,chinese academy of sciences,Guangzhou 510640,china 2.graduate university of chinese academy of sciences,beijing 100049,china 3.Guangdong academy of Social sciences,Guangzhou 510610,china

[Objective] The aim was to study CO2 emissions from energy consumption in agricultural production in Guangdong Province and put forward feasible reduction measures.[Method] Based on the data from china Energy Statistical Yearbook and Guangdong Statistical Yearbook,CO2 emissions from agricultural energy use in Guangdong Province from 2000 to 2009 was estimated by using the formula of carbon emissions recommended by Intergovernmental Panel on Climate Change (IPCC),and corresponding reduction measures were put forward.[Result] With the rapid increase of agricultural output and energy consumption,CO2 emissions from energy consumption in agricultural production in Guangdong Province showed increasing trend from 2000 to 2009,that is to say,increasing from 423.63×104 t C million tons in 2000 to 605.99×104 t C in 2009,with annual growth rate of 4.1%.Meanwhile,carbon emissions intensity during energy consumption in agriculture went down in recent ten years,in other words,decreasing from 0.424 t C/×104 yuan in 2000 to 0.301 t C/×104 yuan in 2009,and its annual decreasing rate was 3.7%.The variation of CO2 emissions from energy consumption in agriculture mainly resulted from the increase of agricultural output,improvement of energy utilization efficiency,high carbonization in agricultural energy consumption structure and so ***,in order to reduce CO2 emissions from energy consumption in agriculture,it is necessary to vigorously develop rural renewable energy,develop and popularize advanced technology for energy utilization,advance the energy conservation of agricultural machines,establish and improve the macroeconomic control mechanism for carbon emissions from the energy consumption in agricultural production in the further.[Conclusion] The study could provide references for the establishment of policy about reducing carbon emissions from agricultural energy consumption in Guangdong Province.

关键词： Energy consumption in agriculture Energy consumption structure CO2 emissions Carbon emissions intensity china

通过碳纳米管与硫化锌纳米晶体复合提高硫化锌的光催化活性(英文)

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新型炭材料 2008年第3期23卷 228-234页

作者：冯守爱赵江红朱珍平中国科学院山西煤炭化学研究所煤转化国家重点实验室

在碳纳米管悬浮夜中,通过Zn(NO3)2与Na2S反应制备了硫化锌/碳纳米管复合物。研究发现:回流后处理以及合适的加料顺序,对强化硫化锌纳米晶体和碳纳米管的结合非常重要。亚甲基蓝水溶液的光降解试验显示:碳纳米管可有效提高硫化锌纳米晶... 详细信息

在碳纳米管悬浮夜中,通过Zn(NO3)2与Na2S反应制备了硫化锌/碳纳米管复合物。研究发现:回流后处理以及合适的加料顺序,对强化硫化锌纳米晶体和碳纳米管的结合非常重要。亚甲基蓝水溶液的光降解试验显示:碳纳米管可有效提高硫化锌纳米晶体的光催化活性。原因是碳纳米管与硫化锌纳米晶体的紧密结合改善了电子迁移的界面,促使硫化锌激发电子快速向碳纳米管迁移,从而抑制了激发电子与空穴的复合。

关键词：碳纳米管硫化物复合物催化性能

Ionogram inversion for MARSIS topside sounding

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Ionogram inversion for MARSIS topside sounding

鳜T细胞表面受体CD4分子的克隆与表达分析

中国地球物理学会第二十七届年会

作者： Xiuhong Han~(1,2) Weixing Wan~1 1.beijing National Observatory of Space Environment,Institute of Geology and Geophysics, chinese academy of sciences,beijing 100029,china 2.graduate university of chinese academy of sciences,beijing 100049, china

A technique of ionogram inversion is proposed to retrieve the electron density profile,Ne(h),of the Martian ionosphere from the topside ionogram measured by the Mars Advanced Radar for Subsurface and Ionosphere Sounding(MARSIS).The inversion technique is developed from Titheridge’s method by replacing the prior polynomials with the empirical orthogonal functions(EOFs),which are calculated from the historical N(h) observation by the radio occultation of the Mars Global Surveyor(MGS).The inversion technique is applied to the MARSIS ionograms and the results suggested that the EOF series in the real height expansion converges *** a few leading EOFs can represent the maximum possible fraction of the variability contained in the original ***,the technique can treat deformed ionograms,e.g.,ionograms without the ionospheric

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水产学报 2011年第8期35卷 1121-1129页

作者：郭政聂品中国科学院水生生物研究所淡水生态与生物技术国家重点实验室中国科学院研究生院

克隆了鳜T细胞表面受体CD4分子的cDNA序列并对其在组织/器官的表达进行了分析。鳜CD4分子的cDNA序列全长为2 356 bp,编码469个氨基酸。该CD4分子由4个免疫球蛋白样结构域(V1-C1-V2-C2)构成的胞外区、一个跨膜区和一个包含保守的CXC基序... 详细信息

克隆了鳜T细胞表面受体CD4分子的cDNA序列并对其在组织/器官的表达进行了分析。鳜CD4分子的cDNA序列全长为2 356 bp,编码469个氨基酸。该CD4分子由4个免疫球蛋白样结构域(V1-C1-V2-C2)构成的胞外区、一个跨膜区和一个包含保守的CXC基序的胞内区组成。系统进化分析表明,鳜CD4分子与同属于鲈形目的鲈CD4分子聚为一支,与鲈的相似性最高(57%),与鲤的相似性较低(34%)。序列比对分析显示,CD4分子胞外区存在多个保守性位点,如:C1结构域中的WTC基序、V2和C2结构域中的N-糖基化位点等。同鸟类和哺乳类不同的是,鳜CD4分子在V1结构域中缺少由半胱氨酸(Cys)残基对形成的二硫键,而在V2结构域中存在一个额外的二硫键,这可能会改变CD4分子的空间构象,进而影响到CD4与MHCⅡ的结合以及后续的抗原诱导的T细胞活化等。荧光定量PCR分析表明,CD4mRNA在鳜的胸腺中表达量最高,在脾脏中表达量最低。脂多糖腹腔注射8 h后,CD4 mRNA在鳜的胸腺、脾脏和头肾中都呈显著的上调表达(P<0.05)。

关键词：鳜 T细胞 CD4 表达

合成气气氛下褐煤与生物质共液化残渣的燃烧特性

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燃料化学学报 2010年第2期38卷 155-161页

作者：郭振兴白宗庆李文王志青中国科学院山西煤炭化学研究所煤转化国家重点实验室山西太原030001 中国科学院研究生院北京100049

利用热重研究了不同液化条件(溶剂、温度、气氛、水分)下褐煤与生物质共液化所得残渣的燃烧特性。通过比较共液化残渣燃烧的三个特征温度,着火点、燃烧峰温和燃尽温度,对比分析了液化条件对残渣燃烧特性的影响及其原因,同时研究了残渣... 详细信息

利用热重研究了不同液化条件(溶剂、温度、气氛、水分)下褐煤与生物质共液化所得残渣的燃烧特性。通过比较共液化残渣燃烧的三个特征温度,着火点、燃烧峰温和燃尽温度,对比分析了液化条件对残渣燃烧特性的影响及其原因,同时研究了残渣燃烧的动力学。结果表明,四氢萘为溶剂所得残渣的燃烧特性好于甲苯为溶剂的;360℃下所得液化残渣燃烧反应性好于420℃下的;合成气气氛下所得液化残渣燃烧反应性好于氢气气氛下的;液化过程加入水后,所得残渣的燃烧反应性降低。不同液化条件下所得残渣的加氢程度和收率不同,使残渣具有不同的H/C原子比、比表面积和灰分,从而对残渣的燃烧特性产生影响。残渣的燃烧特性符合三段二级反应,大部分残渣三段活化能遵循"高-低-高"的变化规律。

关键词：煤/生物质共液化残渣燃烧特性动力学

磷水热改性HZSM-5分子筛对二甲醚转化合成异构烷烃的催化性能

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石油化工 2009年第10期38卷 1038-1043页

作者：李剑谭猗生韩怡卓中国科学院山西煤炭化学研究所煤转化国家重点实验室山西太原030001 中国科学院研究生院北京100049

采用磷水热法和磷浸渍法对HZSM-5分子筛进行改性,以X射线衍射、N_2吸附-脱附、扫描电子显微镜、吡啶吸附傅里叶变换红外光谱、热重分析和原子光谱等表征技术,研究了不同磷改性方法对HZSM-5分子筛晶型结构和酸性的影响;并在固定床反应器... 详细信息

采用磷水热法和磷浸渍法对HZSM-5分子筛进行改性,以X射线衍射、N_2吸附-脱附、扫描电子显微镜、吡啶吸附傅里叶变换红外光谱、热重分析和原子光谱等表征技术,研究了不同磷改性方法对HZSM-5分子筛晶型结构和酸性的影响;并在固定床反应器中评价了磷改性HZSM-5分子筛对二甲醚合成异构烷烃的催化性能。实验结果表明,在水热气氛下磷与HZSM-5分子筛骨架结构中的B酸中心生成H_2PO_4^-,且不会影响分子筛的孔道尺寸,明显不同于磷浸渍改性的HZSM-5分子筛。以磷水热改性的HZSM-5分子筛为催化剂合成汽油烃类,汽油中异构烷烃选择性达到50%左右。

关键词：磷水热改性 HZSM-5分子筛催化剂二甲醚异构烷烃

Speciation and Phylogeography of Opsariichthys bidens （Tdeostei:Cypriniformes） in china:A Study using analysis of the Cytochrome b gene of mtDNA from diverse populations

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Speciation and Phylogeography of Opsariichthys bidens （Tdeo...