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第五届全国化学生物学学术会议

作者： Lihua Jiang~1 Zhen Xue~2 Bihua Yao~2 Weizhi Chen~(3*) Rihe Liu~4 1 State Key Laboratory of Phytochemistry and Plant Resources in West china,Kunming Institute of Botany,chinese academy of sciences,Kunming 650204,china 2 beijing Kaizheng Biotech Development Co.Ltd.,beijing 100850,china 3 SinoGenoMax Co.Ltd.,chinese Human Genome Center,beijing 100176,china 4 School of Pharmacy,university of North Carolina at Chapel Hill,Chapel Hill,NC27599,USA.

＜正＞In an in vitro screening of a crude extract library of chinese mountain herbs for protease inhibitors,six active species from Rhodiola（Crassulaceae）were identified to specifically inhibit 20S *** contrast,these crude Rhodiola extracts inhibits Calpain 1 and 2,cathepsin B,and caspases at much higher *** molecular weight fractions from the extract of the most potent species,Rhodiola crenulata,remained 20s proteasme inhibition *** fraction

关键词： 20s proteasome Rhodiola crenulata tumor IκB

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Derivation of Mesozoic adakitic magmas from ancient lower crust in the North china craton

Derivation of Mesozoic adakitic magmas from ancient lower cr...

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中国科学院地质与地球物理研究所2007学术年会

作者： Neng Jiang~(a,*),Yongsheng Liu~b,Wenge Zhou~c,Jinhui Yang~a,Shuangquan Zhang~d * Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,chinese academy of sciences,P.O.Box 9825, beijing 100029,china b State Key Laboratory of Geological Processes and Mineral Resources,china university of Geosciences,Wuhan,china c Institute of Geochemistry,chinese academy of sciences,Guiyang,china d Department of Chemistry and Biochemistry,university of Windsor,Ont.,Canada

Three Mesozoic plutons were intruded into the Archean granulite terrains in northern margin of the North china craton adjacent to the granulite xenolith-bearing Tertiary Hannuoba *** are Triassic Guzuizi and Honghualiang granites and Early Cretaceous Zhuanzhilian *** of the three intrusions are characterized by high Sr(576-1216 ppm) and NaO(≥4.0%),low Y(≤18 ppm) and heavy rare-earth elements(Yb china *** hypothesis can also explain the discrepancies in ages and compositions between the granulite terrains and xenoliths,and implies that crustal anatexis may be one of the major processes controlling the chemical differentiation of the continental crust.

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Pendulum-Like Systems in Hilbert Spaces and Lagrange Stability

Pendulum-Like Systems in Hilbert Spaces and Lagrange Stabili...

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第25届中国控制会议

作者： Liu Chao, Huang Lin, Feng Dexing Center for Systems & Control, Department of Mechanics & Engineering Science, Peking university, beijing 100871 Center for Systems & Control, Department of Mechanics & Engineering Science, Peking university, beijing 100871 academy of Mathematics and Systems Science, chinese academy of sciences, beijing 100080

＜正＞In this paper, a class of pendulum-like systems in infinite dimensional Hilbert spaces is investigated. A frequency domain criterion guaranteeing the systems with the property of Lagrange stability is established.

关键词： Pendulum-like systems Multiple equilibria Infinite dimensions Lagrange stability

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Serum Metabolome is Altered in Arginine-Supplemented Growing Pigs

Serum Metabolome is Altered in Arginine-Supplemented Growing...

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4th International Symposium on Animal Nutrition,Health and Feed Additive

作者： Q.H.He,X.F.Kong,Z.R.Tang,G.Y.Wu,H.R.Tang,P.P.Ren,F.H. Hao,R.L.Huang,T.J.Li,B.E.Tan,Y.N.Wu,and Y.L.Yin 3 Key Laboratory for Agro-ecological Processes in Subtropical Region,Institute of Subtropical Agriculture,The chinese academy of sciences,Changsha,Hunan 410125,P.R.china 4 National Institute for Nutrition and Food Safety,chinese CDC,beijing 100050 china 5 The graduate School of the chinese academy of Science,beijing 10004.,china 6 Department of Animal Science,Texas A&M university,College Station,TX,77843-2471 7 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Centre for Magnetic Resonance,Wuhan Institute of Physics and Mathematics,the chinese academy of sciences,Wuhan,Hubei 430071,china

Arginine plays an important role regulating nutrient metabolism,but the underlying mechanisms are largely *** study was conducted to determine the effect of dietary arginine supplementation on the metabolome in serum of growing pigs using H nuclear magnetic resonance spectroscopy. Sixteen pigs（48±4 kg） were randomly assigned to one of 2 groups,representing supplementation with 0 or 1.0%of L-arginine-HCl to corn- and soybean meal-based *** was collected after 46 d *** arginine supplementation decreased fat deposition and increased protein accretion in the body. Principal component analysis showed that serum concentrations of low-density lipoprotein,very-low-density lipoprotein,and urea were lower,but concentrations of creatinine,tricarboxylic-acid-cycle metabolites,alanine,ornithine,lysine and tyrosine were greater in arginine-supplemented than in control pigs. Additionally,the arginine treatment affected serum concentrations of lipid signalling molecules（glycerophosphorylcholine and myo-inositol） and intestinal bacterial metabolites（formate,ethanol,methylamine, dimethylamine,acetate,and propionate）. These novel findings suggest that dietary arginine supplementation alters the catabolism of fat and amino acids in the whole body, enhances protein synthesis in skeletal muscle, and modulates intestinal microbial metabolism in growing pigs.

关键词： arginine metabolomics serum pigs nuclear magnetic resonance spectroscopy

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APPLICATION OF THE WEAKNESS RATIO IN FLUID DETECTION IN FRACTURED MEDIUM

APPLICATION OF THE WEAKNESS RATIO IN FLUID DETECTION IN FRAC...

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中国科学院地质与地球物理研究所2008学术年会

作者： WANG Yun~1,SHI Ying~1,YANG De-Yi~2 1 Institute of Geology and Geophysics,chinese academy of sciences,beijing 100029,china 2 2 Institute of Mining Engineering,Taiyuan university of Technology,Taiyuan 030024,china

Fluid detection in fractured medium has great significance for the oil gas prospecting and exploitation. The weakness ratio of fractures is relevant with the fluid in fractures and it is very sensitive to the velocity ratio. Through analyzing the relationship between weakness ratio and velocity ratio,this paper offered the expressions between the converted-wave velocity ratio or time ratio and weakness ratio,then gave an example from WJT gas field,Daqing oil field in *** result indicates that it is possible to detect fluid property in fractures by using the weakness ratio,and the weakness ratio section can be applied for detecting oil and gas in fractures.

关键词： Fracture Weakness ratio Velocity ratio Converted-wave

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Feedback Pseudo-Dissipative Hamiltonian Realization of Time-Varying Nonlinear Systems

Feedback Pseudo-Dissipative Hamiltonian Realization of Time-...

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第二十二届中国控制会议

作者： Wang Yuzhen Li Chunwen Cheng Daizhan Department of Automation, Tsinghua university, beijing, 100084 School of Control Science and Engineering, Shandong university, Jinan, 250061 Institute of Systems Science, chinese academy of sciences, beijing, 100080

＜正＞A Key step in applying the Hamiltonian function method is to express the system under consideration into a generalized Hamiltonian system with dissipation, which yields the so called generalized Hamiltonian realization. This paper investigates the feedback pseudo-dissipative Hamiltonian realization problem of time-varying nonlinear systems. A constructive method to handle the problem is proposed, and the corresponding realization form can be given by a set of formulas. Then some new sufficient conditions are obtained for the feedback pseudo-dissipative realization in this paper.

关键词： Generalized Hamiltonian realization Feedback pseudo-dissipative realization Coordinate transformation.

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不同浓度珍霉素(17997)滴眼剂对兔实验性单纯疱疹性角膜炎的疗效

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中国新药与临床杂志 2003年第4期22卷 207-209页

作者：马盈吴静安陶佩珍张皙上海市第一人民医院眼科上海200080 北京大学第一医院眼科北京100034 中国医学科学院医药生物技术研究所北京100050

目的 :探讨抗病毒药珍霉素 (17997)在兔实验性单纯疱疹性角膜炎中的治疗剂量范围。方法 :观察 5mg·L- 1,10mg·L- 1,2 0mg·L- 1珍霉素滴眼剂 ,0 .1%阿昔洛韦滴眼剂及赋形剂 (随机分成每组10～ 11只眼 ,每日滴眼 5次 ,每次 2滴 ,连续 1... 详细信息

目的 :探讨抗病毒药珍霉素 (17997)在兔实验性单纯疱疹性角膜炎中的治疗剂量范围。方法 :观察 5mg·L- 1,10mg·L- 1,2 0mg·L- 1珍霉素滴眼剂 ,0 .1%阿昔洛韦滴眼剂及赋形剂 (随机分成每组10～ 11只眼 ,每日滴眼 5次 ,每次 2滴 ,连续 12d)对兔实验性单纯疱疹性角膜炎的疗效 ,采用双盲法用裂隙灯观察兔角膜病变情况并评分。同时进行兔结膜囊泪液膜病毒分离并计算病毒滴度半数组织细胞感染剂量 (TCID50 )。结果 :各实验浓度的珍霉素滴眼剂对实验性单纯疱疹性角膜炎均有明显疗效 ,可减轻角膜病变程度 (P <0 .0 5 ) ,减少角膜排毒量(P <0 .0 1) ,并与阿昔洛韦滴眼剂比较差异无显著意义。结论 :珍霉素是一种高效的新型抗单纯疱疹性角膜炎的药物。

关键词：角膜炎疱疹性兔动物实验抗生素类

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Storage,Patterns and Controls of Soil Nitrogen in china

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Pedosphere 2007年第6期17卷 776-785页

作者： YANG Yuan-He MA Wen-Hong A. MOHAMMAT FANG Jing-Yun Department of Ecology and Key Laboratory for Earth Surface Processes of the Ministry of Education Peking University Beijing 100871 （China） School of Environment and Urban Study Peking University Shenzhen Graduate School Shenzhen 518055 （China）

Soil holds the largest nitrogen(N)pool in terrestrial ecosystems,but estimates of soil N stock remain controversial. Storage and spatial distribution of soil N in china were estimated and the relationships between soil N density and environmental factors were explored using data from china's Second National Soil Survey and field investigation in northwest china and the Tibetan ***'s soil N storage at a depth of one meter was estimated at 7.4 Pg,with an average density of 0.84 kg m^(-2).Soil N density appeared to be high in southwest and northeast china and low in the middle areas of the *** N density increased from the arid to semi-arid zone in northern china,and decreased from cold-temperate to tropical zone in the eastern part of the *** analysis of general linear model suggested that climate and vegetation determined the spatial pattern of soil N density for natural vegetation,which explained 75.4% of the total variance.

关键词： Climate soil nitrogen soil texture spatial distribution vegetation

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SUBLETHAL EFFECTS OF IMIDACLOPRID ON BEMISIA TABACI (GENNADIUS) (HEMIPTERA:ALEYRODIDAE) UNDER LABORATOTY CONDITIONS

SUBLETHAL EFFECTS OF IMIDACLOPRID ON BEMISIA TABACI (GENNADI...

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International Congress on Biological Invasions

作者： Yu-Xian HE~(1,2),Jian-Wei ZHAO~2,Dong-Dong WU~3,and Kong-Ming WU~1 1 State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,chinese academy of Agricultural sciences,beijing 100193,china. 2 Institute of Plant Protection,Fujian academy of Agricultural sciences,Fuzhou 350013,china. 3 College of Plant Protection,Fujian Agriculture and Forestry university,Fuzhou 350002,china

Pesticides not only directly affect insect pest populations through acute toxicity(lethal), but also have an indirect(sublethal) effect on pest physiology or *** this study, we describe the sublethal effects of imidacloprid on the feeding preference,honeydew excretion,development,and fecundity of Bemisia tabaci B-biotype,an important pest of vegetable crops in *** evaluate the sublethal effect from the pesticide,we used LC and LC concentrations at 8.59ppm and 30.86ppm for adults,11.40ppm and 45.96ppm for eggs,15.89ppm and 32.89ppm for nymph,respectively,to conduct several experiments in the *** the choice tests with treated and untreated leaf discs in the petri dishes,the adults of *** showed a clear preference for the untreated leaf *** honeydew excretion of adults feeding on leaves treated with sublethal concentrations were significantly lower than that on untreated leaf discs,and female adults of *** treated with sublethal concentrations decreased egg production compared with untreated individuals during 24h testing period,but when transferred to untreated leaves,they recovered well within *** also found,after treated by dipping method with sublethal concentrations for the eggs and 2nd instar nymphs of ***,the development durations of survived eggs and nymphs,the molting rates and longevities of adults had no significant differences compared with the controls,but adults developed from survived nymphs treated with LC concentration increased egg production,which reached to 332.23 eggs per female compared with 182.86 eggs per female from the untreated *** did not found sublethal effects on longevity and fecundity of adults of *** when exposed to sublethal concentrations within 24 h of emergence and transferred to untreated leaves after 24h,and on development(egg hatching rate,nymphal mortality,molting rate) of F *** results show that imidacloprid has an important sublethal effect on ***

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模拟研究卫-卫跟踪中星间隔的选择问题

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天文学报 2005年第1期46卷 62-69页

作者：周旭华吴斌许厚泽彭碧波中国科学院测量与地球物理研究所动力大地测量重点实验室

从两个方面讨论了低轨卫星在做卫-卫跟踪(SST)观测时,星间隔的选择问题. 1)用地球重力位系数作为扰动量,比较该扰动引起的不同间隔的SST星间距离和速度变化大小. 2)用随机误差为1μm／s的星间速度变化作为模拟观测量,恢复不同间隔的 ... 详细信息

从两个方面讨论了低轨卫星在做卫-卫跟踪(SST)观测时,星间隔的选择问题. 1)用地球重力位系数作为扰动量,比较该扰动引起的不同间隔的SST星间距离和速度变化大小. 2)用随机误差为1μm／s的星间速度变化作为模拟观测量,恢复不同间隔的地球重力位系数,并做精度评估.两种结果表明,适当增大SST间隔对求解重力场有利, 但无限制增大无实际意义,对于选定高度为420 km卫星,在作SST观测时,星间隔不宜超过690km.此模拟方法及结果对我国确定重力卫星指标有着重要意义.

关键词： SST 重力位地球模拟观测重力卫星重力场低轨卫星间隔扰动系数

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