检索结果-南通市图书馆

Diurnal Variations of Precipitation over the South china Sea Using TRMM Observations

在线全文

cnki会议

学校读者我要写书评

暂无评论

Diurnal Variations of Precipitation over the South China Sea...

第七次全国动力气象学术会议

作者： Li Weibiao~1 Luo Cong~1 Wang Dongxiao~2.Lei Ting~1 and Liu Zijie~1 1.Department of Atmospheric sciences,Sun Yat-Sen university,Guangzhou,5102.5,{2. 2.LED,South {2. Sea Institute of Oceanology,chinese academy of sciences,Guangzhou 510301,{2.

＜正＞In this study,diurnal variations of precipitation and related mechanisms over the South china Sea（SCS）are studied using the TRMM *** have found that: 1)The precipitation over the SCS has large diurnal variations with considerable regional features and seasonal *** variations are significant all the year around over the southern of the *** the middle to northern of the SCS,however,diurnal variations are significant only in summer and *** the northern of the SCS precipitation peaks in early morning,while over the southern of the SCS it has two diumal peaks:one in the early morning and another in the late afternoon. 2.The diurnal variations of precipitation over the SCS are related to the activity of the SCS summer monsoon and the ENSO *** diurnal variations of precipitation over the SCS become much more *** addition,after the onset of the SCS summer monsoon,the late afternoon precipitation increases remarkably over the northern of the ***,it is interesting to note that the early morning rainfalls are much more significant during La Nina years than those during El Nino years. 3)The land-sea breezeis responsible forthe diurnal cycle over the Kalimantan Island and its offshore area while the"static radiation-convection" mechanisms may result in the early morning rainfall peak over the SCS.

关键词： Precipitation Diurnal Variations South china Sea

Ensiling and protein degradation characteristics of green tea grounds treated with contrasting additives

在线全文

cnki会议

学校读者我要写书评

暂无评论

Ensiling and protein degradation characteristics of green te...

低碳经济与高效养殖——第六次全国饲料营养学术研讨会暨动物营养学分会成立三十周年大会

作者： XU Chun-cheng~(1*),WANG Rong-rong~1,LIU Xian~1,WANG Hui-li~1,SUN Qi-zhong~2.(1.china Agricultural university,Beijing 100083,china 2.Grassland Research Institute,chinese academy of Agricultural sciences,Hohhot 010010,china)

This study evaluated the fermentation characteristics and protein degradation dynamics of wet green tea grounds(WGTG) *** WGTG was ensiled with distilled water(control),or lactic acid bacteria(LAB), enzyme(E),formic acid(FA),and formaldehyde(FD) prior to *** bag silos for each treatment wereThis study evaluated the fermentation characteristics and protein degradation dynamics of wet green tea grounds(WGTG) *** WGTG was ensiled with distilled water(control),or lactic acid bacteria(LAB), enzyme(E),formic acid(FA),and formaldehyde(FD) prior to *** bag silos for each treatment were

关键词： wet green tea grounds additives silage fermentation protein degradation

在线全文

cnki会议

学校读者我要写书评

暂无评论

西双版纳地区公路两侧土地利用变化格局特征

山地学报 2006年第3期24卷 284-290页

作者：曹智伟马友鑫李红梅郭宗锋刘文俊中国科学院西双版纳热带植物园中国科学院西双版纳热带植物园云南昆明6502.3 中国科学院研究生院北京100039

根据西双版纳地区1976、1988和2.03年三期LandsatMSS/TM/ETM影像解译的土地利用数据,运用Arc-G IS软件的缓冲区分析方法,分析该区内主干公路两侧土地利用变化的时空格局。结果如下:2. a间,与整个西双版纳州相比,主干公路两侧的土地利用... 详细信息

根据西双版纳地区1976、1988和2.03年三期LandsatMSS/TM/ETM影像解译的土地利用数据,运用Arc-G IS软件的缓冲区分析方法,分析该区内主干公路两侧土地利用变化的时空格局。结果如下:2. a间,与整个西双版纳州相比,主干公路两侧的土地利用强度更大、增长速度更快。公路两侧的土地利用转化主要表现为由林地向橡胶园和茶园转变,林地锐减,橡胶园迅速增加,林地是橡胶园的最主要来源。主要地类的面积在一定范围表现出与距公路距离的相关关系,距公路越近,林地面积百分比越小,橡胶园、建筑用地和水田面积百分比越大。土地利用变化也表现出明显的公路效应,距离公路越近,林地减少的速度、橡胶园增加的速度越快;随着距离的增加,林地向橡胶园的转化面积逐渐减小。土地利用变化的公路效应深度表现出不断扩展的趋势:1976年为公路两侧5 km,1988年为7 km,2.03年达11 km。

关键词：土地利用公路效应热带森林橡胶园西双版纳

Phospholipid Fatty Acid Profiles of chinese Red Soils with Varying Fertility Levels and Land Use Histories

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2001年第2期11卷 97-103页

作者： YAO HUAIYING, HE ZHENLI and HUANG CHANGYONG Department of Resource sciences, Zhejiang university, Hangzhou 31002. ({2.) 浙江大学浙江杭州 310029

Analysis of phospholipid fatty acids (PLFAs) was used to estimate the microbial community structures of eight chinese red soils with different fertility levels and land use histories. The total amounts of PLFAs in the soils were significantly correlated with soil organic carbon, total nitrogen, microbial biomass C and basal respiration, indicating that total PLFA was closely related to fertility and sustainability in these highly weathered soils. Soils for the eroded wasteland were rich in Gram-positive species. When the eroded soils were planted with citrus trees, the soil microbial population had changed little in 4 years but took up to 8-12.years before it reached a significantly different population. Multivariate analysis of PLFAs demonstrated that land use history and plant cover type had a significant impact on microbial community structure. However, the difference of soil microbial community structure in the paddy field compared to other land uses was not larger than expected in this experiment.

关键词： microbial community structure phospholipid fatty acids (PLFAs) red soil

维普期刊数据库

Variable selection based on a graphical index of separation（GIOS） for discriminating symptomatic gout

在线全文

学校读者我要写书评

暂无评论

Variable selection based on a graphical index of separation...

全国生物医药色谱及相关技术学术交流会（2.12.

作者： Yun Liu(1,2.,Xiao-Ming Sun(1),Duo-Long Di (1)(1) Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province,Lanzhou Institute of Chemical Physics,Lanzhou 730000,china,(2. graduate {2. of the chinese academy of sciences,Beijing 10004.,china

It is commonly acknowledged that the development of gout is a multi-step process,ranging from asymptomatic hyperuricemia,acute gouty arthritis,intercritical gout to chronic tophaceous gout [1].Almost 80% of patients after the first gout attack will suffer a recurrence within 2.years [2..With the accumulation of uric acid and the deterioration of the disease,acute attacks might become polyarticular in chronic gout ***,the attacks will be more common and tend to last longer and become progressively ***,we can conclude that one of the important characteristics of gout disease is its recurrent attacks and no rule to *** acid as a single evaluation indicator for clinical diagnosis is insufficient to satisfy versatile properties of the *** this work,a new strategy,called graphical index of separation（GIOS） [3] were developed to select the important metabolites from the serum sample in order to understand metabolic changes induced by gout disease based on metabolic target *** most significant difference of GIOS for the selection of variable is that the importance of one single variable is not influenced by the inclusion or exclusion of another variable from all variables.

关键词：

Direct Screening of a-Glucosidase Inhibitor from Natural Plant Extracts by Immobilized Enzymes Affinity Chromatography Fishing Combined with UPLC-Q-TOF-MS Analysis

在线全文

cnki会议

学校读者我要写书评

暂无评论

Direct Screening of a-Glucosidase Inhibitor from Natural Pla...

中药与天然药高峰论坛暨第十二届全国中药和天然药物学术研讨会

作者： Shiren Deng~(1,2.,Hongbin Xiao~(1,*) 1.National Chromatographic R&A Center,Dalian Institute of Chemical Physics,the chinese academy of {2.,Dalian 11602.,china. 2.College of Pharmacy,Liaoning university of Traditional chinese Medicine,Dalian 116600,china

A novel enzyme inhibitor screening method was established by a combination of immobilization of a-glucosidase(AGH)on agarose beads and ultra performance liquid chromatography- quadrapole time-of-flight mass spectrometry(UPLC-Q-TOF-MS)for fishing and identification of active components directly from natural plant *** AGH was first immobilized by reaction with the activated agarose and then incubated with the natural plant extracts for ligand *** components,(-)-epigallocatechin-3-gallate(EGCG),(-)-gallocatechin -3-gallate(GCG)and(-)-epicatechin-3-gallate(ECG),in the extract of leaves of Camellia sinensis (green tea)were fished out by their specific affinity binding between the ligands and the enzyme protein and then identified by ***,the above three components isolated from the green tea extracts were tested by traditional enzyme inhibition assay,the results showed each of these compounds was a potentα-glucosidase inhibitors(IC<5μM).This work demonstrates that this new immobilized enzyme-UPLC-MS method may provide an alternative for rapid,effective and direct screening enzyme inhibitors from natural plant extracts.

关键词：

光照、水流和养殖密度对史氏鲟稚鱼摄食、行为和生长的影响

在线全文

cnki会议

学校读者我要写书评

暂无评论

水产学报 2004年第1期28卷 54-61页

作者：李大鹏庄平严安生王明学章龙珍华中农业大学水产学院中国水产科学研究院东海水产研究所中国水产科学研究院东海水产研究所湖北武汉 430070 上海 2.0090 中国水产科学研究院长江水产研究所湖北荆州 434000

研究了光照强度和周期,水流速度,养殖密度对史氏鲟摄食、生长和行为的影响。光照周期在一定的照度和时间范围内对史氏鲟稚鱼的摄食和生长没有显著影响。水流和养殖密度对史氏鲟的生长有着显著的影响。高水流速度和低养殖密度对史氏鲟的... 详细信息

研究了光照强度和周期,水流速度,养殖密度对史氏鲟摄食、生长和行为的影响。光照周期在一定的照度和时间范围内对史氏鲟稚鱼的摄食和生长没有显著影响。水流和养殖密度对史氏鲟的生长有着显著的影响。高水流速度和低养殖密度对史氏鲟的生长有着积极的影响,生长效率、特定生长率和日增重都随流速的增大和养殖密度的降低而增大,条件系数随密度的增大而减小,而净增重随密度的增大而增大,各密度组的史氏鲟稚鱼的生长离散没有加剧。在流速为0.06m·s-1和0.18m·s-1范围内,稚鱼的生长效率（GE）与流速（V）之间存在着显著的正相关关系,其关系式为GE=46.106+142.04V（r=0.52.6）。特定生长率（SGR）与养殖密度（SD）之间存在着显著的负相关,其关系式为SGR=4.972.-0.4914SD（r=-0.6553）。3种环境因子对稚鱼的食欲未有明显影响,但饵料转化率会随养殖密度的增大和流速的降低而显著性增大。史氏鲟稚鱼在照度100～1100lx之间的趋光率为49.55％,无显著的趋光性;当亮区照度在13000lx以上,椎鱼100％避光。处于全黑条件下的稚鱼的体色却普遍变浅,呈灰白色;而另两种光周期条件下的稚鱼体色深黑,全光照条件下的稚鱼体色与自然光周期下的一样。在试验流速范围内,水流刺激还将影响稚鱼的某些行为,在流水环境中稚鱼喜聚集和逆水游?

关键词：史氏鲟光照周期水流速度摄食行为生长

Suppression of Colorectal Cancer Growth by a Novel Adeno-associated Virus Vector-mediated IFN-β through Targeting the Telomerase Activity in vivo

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Suppression of Colorectal Cancer Growth by a Novel Adeno-ass...

华东六省一市生物化学与分子生物学会2.08年学术交流会

作者： Yigang Wang~1 Lingfeng He~(1,2. Fang Huang~1 1 Kangjiang Zhang~1 Gongchu Li~1 Guoqing He~1 Xinyuan Liu~(1,2. (1 Xinyuan Institute of Medicine and Biotechnology,College of Life Science,Zhejiang Sci-Tech university 2.Institute of Biochemistry and Cell Biology,Shanghai Institutes for Biological sciences, {2. academy of sciences,Shanghai 2.0031,china.)

Although the antiviral actions of interferons(IFNs)are fast observed,up to date,Type I IFNs(α/β)protein have been widely used as a clinical anticancer agent due to their antiproliferative effects via induction of apoptosis,activation of antitumor immunity and inhibition of angiogenesis ***,there are some limitations in antitumoral clinical trials of type I IFNs such as short halt-life and systemic toxicity at high ***-associated virus (AAV)has rapidly become a promising gene delivery vehicle for its excellent advantage of nonimmunogenic,low pathogenicity and long-term gene ***,lack of tissue specificity caused low efficiency of AAV transfer to target *** application of human telomerase reverse transcriptase(hTERT)promoter is a good targeting strategy for AAV in cancer gene therapy as hTERT is transcriptionally upregulated in most cancer ***,hTERT promoter becomes a prior candidate to improve the targeting of *** present work,a novel tumor targeting AAV harbouring IFN-βgene under the control of hTERT promoter(AAV-hTERT-IFN-β) was ***-βexpression was observed in tumor cells infected with AAV-hTERT-IFN-βAAV-hTERT-IFN-βdisplayed cancer-specific cytotoxicity and induced tumor cell apoptosis via activation of caspase pathway and release of cytochrome ***,in animal experiments, administration of AAV-hTERT-IFN-βsignificantly suppressed the growth of colorectal cancer xenograft and resulted in tumor cells *** data suggested that AAVs in combination with hTERT-mediated IFN-βexpression could exert potential antitumor activity and provide a novel targeting approach to cancer therapy.

关键词： Type I IFNs(α/β) Adeno-associated virus hTERT promoter antitumor efficacy

Plasma hemoglobin concentration was related to estimated glomerular filtration rate in elderly patients with ischemic cardiomyopathy

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2008年第3期5卷 150-154页

作者： Gang Li,~1 Zhihua Wang,~1 Canjing Zhang,~2.Yang Wang~1 1 Division of Cardiology, Department of Geriatrics, The First Affiliated Hospital, Chongqing Medical university, Chongqing 400016, china 2.Department of Function Examination, Chongqing Xijiao Hospital, Chongqing 400050, china Department of Geriatrics First Affiliated Hospital Chongqing Medical University Chongqing 400016 China Department of Function Examination Chongqing Xijiao Hospital Chongqing 400050 China

Objectives To study the relationship between plasma hemoglobin concentration and estimated glomerular filtration rate （eGFR） in elderly patients with ischemic cardiomyopathy （ICM）.Methods Clinical data of patients with coronary heart disease who were discharged from The First Affiliated Hospital,Chongqing Medical university between 2.05 and 2.07 were analyzed retrospectively. Echocardiography results,plasma hemoglobin and creatinine concentration were abstracted from the medical *** study included 2.5 chinese Hart patients with age 60 years and older with angiography confirmed coronary heart disease,silent myocardial ischemia or angina pectoris,of whom 154 had ICM defined as left ventricular end-diastolic diameter （LVDd）,male≥56 mm,female≥51 mm （63. 51±7.70 mm） measured by M-mode *** differences in plasma hemoglobin concentration were analyzed retrospec- tively between patients with and without ICM,and between patients with an eGFR-1·1.73m-2./sup> and those with an eGFR≥60 ml·min-1·1.73m-2./sup>.Results There were no significant differences in plasma hemoglobin concentration and eGFR between ICM and non-ICM group (118.49±2..52.g·L-1 vs.115.80±2..32.g·L-1 and 75.13±2..2. ml·min-1·1.73m-2./sup> vs.79.09±2..41 ml·min- 1·1.73m-2./sup>,respectively,both P>0.05).However,in both ICM and non-ICM groups,plasma hemoglobin concentration was lower in those with an eGFR-1·1.73m-2./sup> compared with compared with those with an eGFR≥60 ml·min-1·1.73m-2./sup> group (112. 2.±18.61 g·L-1 vs.119.92.2..74L-1,P<0.05);plasma hemoglobin concentration was related positively to *** There were no significant changes in plasma hemoglobin concentration and eGFR;however,plasma hemoglobin concentration was related to eGFR significantly positively in elderly patients with ICM due to corona

关键词： ischemic cardiomyopathy coronary heart disease silent myocardial ischemia angina pectoris estimated glomerular filtration rate plasma hemoglobin concentration

维普期刊数据库