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Formation and causes of NOx pollution on the east side of the Taihang Mountains in china

science Bulletin 2011年第19期 2046-2051页

作者： TIAN HeZhong 1 , WANG Yan 1 , ZHAO Dan 1 , CHAI FaHe 2 , XING ZiShan 3.& CHENG Ke 1 1 state key Joint laboratory of Environmental Simulation & Pollution Control, School of Environment, {3. normal university, beijing 100875, china 2 chinese Research academy of Environmental sciences, {3. 100012, china 3.School of Computer {13. and Technology, {3. university of Posts and Telecommunications, {3. 100876, china

Tropospheric column amounts of NO 2 from OMI/Aura products were applied to investigate the seasonal variation of NO x on the east side of the Taihang Mountains (ESTM) in china. The NO 2 concentration varied seasonally, with winter maxima and summer minima. To explore the causes of the heavy NO 2 pollution in this region, wind field simulations were conducted by using the Fifth-Generation NCAR/Penn state Mesoscale Model (MM5). MM5 simulations showed that wind directions in the ESTM region were dominated by northeasterly and northwesterly winds throughout the year and to a lesser degree by southwesterlies. Elevated NO 2 concentrations (higher than 50×10 15 molec/cm 2 ) occurred in three meteorological situations: convergent wind fields (5 days), northeasterly winds (2 days), and calm days (1 day) in January. Although the local anthropogenic NO x emission strength was not so high as that in other developed areas, the calms and frequent occurrence of convergent wind fields, as well as unfavorable terrains for diffusion, resulted in the accumulation of atmospheric pollutants and hence heavy NO x pollution. Furthermore, long-distance NO x transportation from the beijing-Tianjin-Tangshan region to the ESTM area could be seen when the wind was from a northeasterly direction, especially under high wind speeds.

关键词： east side of the Taihang Mountains (ESTM) remote sensing of air pollution satellite data tropospheric NO 2 pollution wind field china

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STRUCTURE AND MAGNETIC PROPERTIES OF YFe_(12-x)Ti_x COMPOUNDS

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Acta Metallurgica Sinica(English Letters) 2001年第3期14卷 171-176页

作者： B. Fuquan, J.L. Wang, N. Tang, W.Q. Wang, Z.Z. Guo, G.H. Wu and F.M. Yang (state key laboratory of Magnetism, {3. of Physics, The chinese academy of sciences, beijing 100080, china) (Department of Physics, Inner Mongolia normal university, Huhhot 01 state key laboratory of Magnetism Institute of Physics The Chinese Academy of Science

The structure and magnetic properties of the YFe12-xTix compounds (x=0.85, 1.00, 1.10, 1.20 and 1.3.) have been investigated. Both the thermomagnetic analysis and X-ray diffraction patterns show that all compounds studied are almost single phase and crystallize in the ThMn12-type structure. The lattice parameters a, c and unit cell volume V increase monotonously with the increase of Ti content. Curie temperature Tc is almost independent on the Ti content while the spontaneous magnetization M0, the anisotropy field Ba and the anisotropy constant K1 decrease monotonously with the increase of Ti content and the temperature increases from 1.5 K to 293.K.

关键词： Iron Magnetic properties Structure (composition) Titanium Yttrium

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Experimental and theoretical study of^(13.C shielding tensors in new-style molybdenum complex

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science china Chemistry 2004年第3期47卷 214-221页

作者： HOU Guangjin1,2, WANG Liying2, LU Xiaoming3. ZHENG Anmin2, DENG Feng2 &YE Chaohui1,2 1. Department of Physics, Huazhong university of science and Technology, Wuhan 43.074, china 2. {3. key laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan institute of Physics and Mathematics, Chi-nese academy of sciences, Wuhan 43.071, china 3. Department of Chemistry, Capital normal university, beijing 10003., china Department of Physics Huazhong University of Science and Technology Wuhan China chinese academy of sciences Wuhan China Department of Chemistry Capital Normal University Beijing China

13. 2D-PASS spectra of two new cis-dioxo catecholatomolybdenum complexes (NH2CH2NH2CHCH2)2(H+)3.MovO 2(C6H4O2)2] and (NH2CH2CH2CH2NH2)2(H+)3.Mo(v)O2 (C2H2O2)2] have been obtained by solid-state nuclear magnetic resonance (NMR), in which the spinning sidebands were well-separated. The principal components of the 13. shielding tensors were extracted by theoretically fitting the intensities of 13. spinning sidebands. The effects of counter cations on 13. chemical shift isotropy and shielding tensor of cis-dioxo catecholatomolybdenum complex anion [Mo (v)O2(C6H4O2)2]3. were studied, comparing the 13. CSA of those carbon sites in complex anions with that of the counter cations. Based on the known structure of the molybdenum complex crystal, theoretical values of 13. shielding tensors were calculated by the ainitio GIAO method, in comparison with the experimental results.

关键词： NMR, magic angle spinning, chemical shift anisotropy, shielding tensor, cis-dioxo-monomolybdenum.

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Colony development and physiological characterization of the edible blue-green alga,Nostoc sphaeroides (Nostocaceae,Cyanophyta)

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Progress in Natural science:Materials International 2008年第12期18卷 1475-1483页

作者： Zhongyang Deng~(a,c,d,e) Qiang Hu~b Fan Lu~c Guoxiang Liu~a Zhengyu Hu~a a state key laboratory of Freshwater Ecology and Biotechnology,{3. of Hydrobiology,chinese academy of sciences,Wuhan 43.072,china b Department of Applied Biological sciences.Arizona state university,Polytech Campus,ISTBⅢ,Mesa,AZ 85212,USA c Algaen Corporation,925 West Northwest Boulevard,Winston Salem,NC 27101.USA d Department of Biology,Hubei normal university,Huangshi 43.002,china e Graduate School of the chinese academy of sciences.beijing 100049,china state key laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China Algaen Corporation 925 West Northwest Boulevard Winston Salem NC 27101 USA Department of Biology Hubei Normal University Huangshi 435002 China Graduate School of the chinese academy of sciences Beijing 100049 China Department of Applied Biological sciences Arizona State University Polytech Campus ISTB III Mesa AZ 85212 USA

The edible blue-green alga,Nostoc sphaeroides K(?)tzing,is able to form microcolonies and spherical *** has been used as a potent herbal medicine and dietary supplement for centuries because of its nutraceutical and pharmacological ***,lim- ited information is available on the development of the spherical macrocolonies and the environmental factors that affect their structure. This report described the morphogenesis of *** from single trichomes to *** the process,most structural features of macrocolonies of various sizes were dense maculas,rings,the compact core and the formation of liquid core;and the filaments within the macrocolonies showed different lengths and arrays depending on the sizes of *** temperature and light intensity also strongly affected the internal structure of *** microcolonies further increased in size to form 3. mm mac- rocolonies,the colonies differentiated into distinct outer,middle and inner *** filaments of the outer layer showed higher max- imum photosynthetic rates,higher light saturation point,and higher photosynthetic efficiency than those of the inner layer;whereas the filaments of the inner layer had a higher content of chlorophyll a and phycobiliproteins than those of the outer *** results obtained in this study were important for the mass cultivation of *** as a nutraceutical product.

关键词： Macrocolony Morphogenesis Nostoc sphaeroides Photosynthesis

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Chronic morphine treatment decreases acoustic startle response and prepulse inhibition in rats

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science china(Life sciences) 2010年第11期53卷 1356-1360页

作者： MENG ZhiQiang1,3. ZHOU DongMing1,2, WANG JianHong1 & MA YuanYe1,2 1state key laboratory of Brain and Cognitive {3., Kunming institute of Zoology, chinese academy of sciences, Kunming 650223. china 2state key laboratory of Brain and Cognitive {3., institute of Biophysics, chinese academy of sciences, beijing 100101, china 3.raduate university of chinese academy of sciences, beijing 100049, china state key laboratory of Brain and Cognitive {3. Kunming Institute of Zoology Chinese Academy of Sciences Kunming 650223 China

The reward-related effects of addictive drugs primarily act via the dopamine system, which also plays an important role in sensorimotor gating. The mesolimbic dopamine system is the common pathway of drug addiction and sensorimotor gating. However, the way in which addictive drugs affect sensorimotor gating is currently unclear. In previous studies, we examined the effects of morphine treatment on sensory gating in the hippocampus. The present study investigated the effects of morphine on sensorimotor gating in rats during chronic morphine treatment and withdrawal. Rats were examined during treatment with morphine for 10 successive days, followed by a withdrawal period. Acoustic startle responses to a single startle stimulus (115 dB SPL) and prepulse inhibition responses were recorded. The results showed that acoustic startle responses were attenuated during morphine treatment, but not during withdrawal. PPI was impaired in the last 2 morphine treatment days, but returned to a normal level during withdrawal.

关键词： morphine treatment sensorimotor gating startle response prepulse inhibition

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Chapter 12 Numerical Inversion Methods in Geoscience and Quantitative remote Sensing

Chapter 12 Numerical Inversion Methods in Geoscience and Qua...

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中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： Yanfei Wang institute of Geology and Geophysics,chinese academy of {3.,beijing 100029,china. Xiaowen Li Research Center for remote Sensing and GIS,beijing normal university,beijing,100875, china.

To estimate structural parameters and spectral component signatures of Earth surface cover type,quantitative remote sensing seems to be an appropriate way to deal with these *** the real physical system that couples the atmosphere with the land surface is very complicated and should be continuous,sometimes it requires comprehensive parameters to describe such a system,so any practical physical model can only be approximated by a model which includes only a limited number of the most important parameters that capture the major variation of the real system. The pivot problem for quantitative remote sensing is the *** problems are typically *** ill-posed nature is characterized by(C1) the solution may not exist;(C2) the dimension of the solution space may be infinite;(C3. the solution is not continuous with the variation of the observed *** issues exist for all quantitative remote sensing inverse problems. For example,when sampling is poor,i.e.,there are very few observations,or directions are poorly located,the inversion process would be underdetermined, which leads to the large condition number of the {3.ized systems and the significant noise ***(C2) and(C3. would be the chief difficulties for quantitative remote sensing inversion. This chapter will address the theory and methods from the viewpoint that the quantitative remote sensing inverse problems can be represented by kernel-based operator equations.

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青藏高原中部色林错湖近10年来湖面急剧上涨与冰川消融

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科学通报 2012年第5期57卷 571-579页

作者：孟恺石许华王二七刘锋中国科学院地质与地球物理研究所岩石圈演化国家重点实验室中国科学院研究生院 Department of Geosciences the Pennsylvania State UniversityUniversity ParkPA16802USA

量化了1976～2010年间,特别是2000～2010年间西藏色林错、错鄂及班戈错的湖面面积及湖面海拔高度变化,分析了不同补给方式对湖面变化的影响,为最近10年青藏高原中东部气候变暖所致冰川加速消融提供了新证据.结合差分GPS实测湖面海拔、... 详细信息

量化了1976～2010年间,特别是2000～2010年间西藏色林错、错鄂及班戈错的湖面面积及湖面海拔高度变化,分析了不同补给方式对湖面变化的影响,为最近10年青藏高原中东部气候变暖所致冰川加速消融提供了新证据.结合差分GPS实测湖面海拔、数字高程模型(DEM)及不同时相(1976～2009年)湖面面积的遥感解译,研究提出:(1)近40年来色林错湖面海拔高度变化过程可分为两个阶段.1976～2000年,色林错湖面海拔缓慢上升4.3.,平均0.18m/a;2000～2010年,湖面急剧上涨8.2m,平均0.82m/a.与色林错近10年湖面海拔的快速增长对比,错鄂和班戈错的湖面上升趋势缓慢且平稳.(2)1976～2009年间,色林错湖面面积变化过程经历了平稳增长→加速增长→平稳增长的变化过程.湖面总体扩大656.64km2,增长幅度为3..4%,特别是1999～2009年间,湖面急剧扩大549.77km2,增长幅度为3..6%.根据气象数据相关性及湖水水位平衡分析,近期气温升高所致上游冰川的加速消融是色林错近10年湖面快速变化的主要因素--冰川融水直接导致色林错湖面上涨约8m,降水量的增加是影响湖面变化的次要因素;而主导班戈错湖面变化的因素是长期降水量的变化,气温的影响是次要因素.

关键词：色林错错鄂班戈错高海拔盐湖湖面上涨冰川消融气候变化相关分析

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基于PS-DR-DP理论模型的区域资源环境承载力综合评价

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地理学报 2019年第2期74卷 340-352页

作者：王亮刘慧中国科学院地理科学与资源研究所中国科学院区域可持续发展分析与模拟重点实验室北京100101 中国科学院大学资源与环境学院北京100049 北京师范大学地理科学学部北京100875

资源环境承载力状态评价研究成果众多,研究视角多侧重于"压力—状态—响应"模型的传统途径。本文构建了区域资源环境承载力综合评价框架体系,通过建立"PS-DR-DP"正六边形相互作用力理论模型,将资源环境承载力分解为"压力—支撑力""破坏... 详细信息

资源环境承载力状态评价研究成果众多,研究视角多侧重于"压力—状态—响应"模型的传统途径。本文构建了区域资源环境承载力综合评价框架体系,通过建立"PS-DR-DP"正六边形相互作用力理论模型,将资源环境承载力分解为"压力—支撑力""破坏力—恢复力""退化力—提升力"三对相互作用力,分别对应资源支撑能力、环境容量和风险灾害抵御能力,根据不同作用力大小变化所引起的六边形的形状和面积的变化综合测度区域资源环境承载力状态的变化。基于上述理论模型,采用分类排列多边形图示法,研究了北京市2010-2015年资源环境承载力状态的变化。结果表明,2010-2015年北京市资源环境承载力趋于理想承载状态。2010年正向因子综合承载作用力与负向因子综合承载作用力的比值为1.0143.比值大于1,区域承载状态较好;而2015年该比值为1.1411。与2010年相比,2015年北京市资源环境承载状态相对更佳。2015年相比较于2010年,负向因子作用力均减弱,正向因子综合作用力增强。2015年人口规模为2171万,承载贡献均值为0.7025,进入最佳承载门槛,且仍具有进一步承载的空间。研究结论对北京市2020年人口规模控制在23.0万以内提供了理论支撑。

关键词：综合承载力 PS-DR-DP模型人口规模北京市

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史氏鲟和达氏鳇养殖亲鱼群体遗传多样性分析

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水产学报 2010年第12期34卷 1795-1799页

作者：牛翠娟胡红霞罗静李陈中国科学院昆明动物研究所遗传资源与进化国家重点实验室北京师范大学生命科学学院教育部生物多样性与生态工程重点实验室北京市水产科学研究所

利用线粒体控制区序列片段(史氏鲟,425bp,达氏鳇,43.bp)分析检测了两个养殖场留做后备亲鱼的史氏鲟和达氏鳇的遗传多样性。在所检测的养殖史氏鲟后备亲鱼4个年龄群体共3.个体中,发现5个单倍型,共有11个多态位点,占碱基总数的2.6%,无简... 详细信息

利用线粒体控制区序列片段(史氏鲟,425bp,达氏鳇,43.bp)分析检测了两个养殖场留做后备亲鱼的史氏鲟和达氏鳇的遗传多样性。在所检测的养殖史氏鲟后备亲鱼4个年龄群体共3.个体中,发现5个单倍型,共有11个多态位点,占碱基总数的2.6%,无简约信息位点。不同单倍型之间有1～10个变异位点,占碱基总数的0.2%～2.4%。各单倍型之间的遗传距离为0.002～0.024。单倍型多样性Hd=0.768,平均核苷酸差异数k=4.3.7,核苷酸多样性Pi=0.011。而分别来自2个养殖场的2个达氏鳇养殖群体都是1个群体仅1个单倍型,2个单倍型之间仅有2个碱基差异,遗传距离为0.005,遗传变异极度缺乏。结果提示在利用史氏鲟和达氏鳇后备亲鱼进行繁殖育苗时要充分注意近交的影响。

关键词：史氏鲟达氏鳇后备亲鱼线粒体控制区遗传多样性

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Problems and landscape approach for ecological rehabilitation in the dry valleys of Southwest china

Problems and landscape approach for ecological rehabilitatio...

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2009 International Conference on Environmental science and Information Application Technology

作者： Yuhong Dong Yucheng Comprehensive Experimental Station institute of Geographic science and Natural Resources chinese {3. of sciences beijing 100101 china Shiliang Liu School of Environment state key laboratory of Water Environment Simulation beijing normal university {13. china

The degradation and rehabilitation of dry valley are increasingly a focus of scientific and applied *** paper reviews the general conditions of eco-environmental degradation and puts forward a landscape appoarch for ***,soil and vegetation degradation is the main cause of the *** analysis and insights into the soil and vegetation degradation phenomena and essences are needed for ***-up approach rehabilitation of dry valleys with farmer’s participation is needed and the relationship of ecological,social,economical factors should be considered and different measures should be ***,landscape approach for rehabilitation in relation to the policy"return farmland into forest" vegetation recovery,and afforestation are discussed.

关键词： degradation rehabilitation dry valley landscape approach Southwest china

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