检索结果-南通市图书馆

research on Arachidonic Acid and Eicosapentaenoic Acid Anabolic Metabolism in Diasporangium sp.

在线全文

学校读者我要写书评

暂无评论

Agricultural Science & Technology 2010年第Z2期 70-72页

作者： DAI Chuan-chao,XU Yu-fen,XIA Shun-xiang,ZHAO Mo,YE Yu-cheng Jiangsu engineering and Technology research center for Industrialization of Microbial resources,Jiangsu Key Laboratory for Microbes and Functional Genomics,College of Life Science,nanjing Normal University,nanjing 210046

The fatty acids of a strain of Diasporangium *** been analyzed by using *** fatty acids of twenty mutants were *** on these results,the producing of eicosapentaenoic acid(EPA)supposed via 18∶2,18∶3,20∶3,20∶4 which all belong to ω-6 fatty *** ω-3 desaturation was undertaken at arachidonic acid(AA).In addition,mutant strains resulted in enhanced content of AA which could get two times more than initial strain,but no compact on EPA.

关键词： Arachidonic acid Eicosapentaenoic acid Diasporangium sp. Fatty acid metabolism Mutant

基于Web Services的电站仿真平台(英文)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

系统仿真学报 2008年第19期20卷 5162-5165,5198页

作者：蒋晓肖樊建费敏锐上海市电站自动化技术重点实验室机电工程与自动化学院上海大学上海200072 作战实验中心南京陆军指挥学院江苏南京210045

随着网络技术的发展,第一次提出基于Web Services的电站仿真开放平台WSPS。通过将电站仿真软件SE2000中电站仿真模型中主要功能进行包装并发布,构筑一个基于Web Services的电站仿真开放平台。用户可通过Internet远程调用电站仿真平台验... 详细信息

随着网络技术的发展,第一次提出基于Web Services的电站仿真开放平台WSPS。通过将电站仿真软件SE2000中电站仿真模型中主要功能进行包装并发布,构筑一个基于Web Services的电站仿真开放平台。用户可通过Internet远程调用电站仿真平台验证用户所编写的控制算法,也可通过仿真平台进行仿真实验。本框架的提出通过利用Internet加强了电站仿真资源的共享,减少了重复性投资,有效提高电站仿真软件的开放性。

关键词： Web Services 电站仿真算法验证

Surface water resources' Response to Climate Changes in Jilin Province

在线全文

学校读者我要写书评

暂无评论

Meteorological and Environmental research 2011年第7期2卷 53-56,65页

作者： CAI Zhe1,2,TAN Gui-rong2,SUN Li3,QU Jing-hua3 1.Jinan Meteorological Bureau,Jinan 250002,china 2.Key Laboratory of Meteorological Disaster of Ministry of Education,nanjing University of Information Science & engineering,nanjing 210044,china 3.Jilin Meteorological Scientific research Institute,Changchun 130062,china

[Objective] The response of surface water resources on climate changes was studied.[Method] By dint of monthly average temperature and precipitation in 45 meteorological stations in Jilin Province from 1960 to 2000,monthly runoff in 56 hydrological stations in Songhuajiang and Liaohe region,the surface runoff change and the response of surface water resources to climate change in 41 years were expounded.[Result] The runoff of Songliao region was limited during 1960s and *** began to increase slowly in the early *** 1990s,there were distinct fluctuation of annual runoff and it was decreasing in *** analysis suggested that the runoff of Songliao region was decreasing gradually from south to the *** central gradient was small and runoff was evenly *** test result showed that the annual runoff in Songliao region had large fluctuation before 1980s and after *** response of surface runoff on climate and precipitation changes in Jilin Province was distinct and had strong relevance as well as certain *** on the analysis of the relation of rivers runoff and meteorological elements changes,statistics forecast model between river surface runoff and meteorological elements was *** prediction value and measured value had good *** corresponding river surface runoff changes can be assessed based on the changes of meteorological elements.[Conclusion] The study provided theoretical basis for the development and utilization of surface water resources in Jilin.

关键词： Surface water resources Climate changes Response Jilin china

纳米稀土对复合材料中超细粒子团聚现象的抑制(Ⅰ)——超细金属铜粉团聚现象及其团聚成因

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国稀土学报 2003年第Z1期21卷 67-70页

作者：豆立新龚烈航沈健吕振坚何晓晖龚天平南京大学表面和界面化学工程技术研究中心江苏南京210093 解放军理工大学工程兵工程学院江苏南京210007

应用纳米粒子进行复合材料的改性,其关键和核心技术之一是要解决纳米粒子的在复合材料体系中的团聚问题。通过对超细的金属铜粉改性聚四氟乙烯中金属粒子的团聚性现象的分析和认识,揭示了超细粒子团聚性的共性和工艺中的特殊性;同时研... 详细信息

应用纳米粒子进行复合材料的改性,其关键和核心技术之一是要解决纳米粒子的在复合材料体系中的团聚问题。通过对超细的金属铜粉改性聚四氟乙烯中金属粒子的团聚性现象的分析和认识,揭示了超细粒子团聚性的共性和工艺中的特殊性;同时研究表明,仅通过偶联剂对超细粉体粒子表面进行处理的修饰方法解决纳米粒子的团聚性,其作用是有限的。

关键词：纳米复合材料纳米粒子超细粒子表面修饰团聚分散稀土

Separation and Characterization of Chlorogenic Acids in Tobacco Materials using Liquid Chromatography and Negtive Electrospary Ionization Tandem Mass Spectrometry

在线全文

学校读者我要写书评

暂无评论

Separation and Characterization of Chlorogenic Acids in Toba...

2011 World Congress on engineering and Technology(CET 2011)

作者： Shaofeng Li 1 1.Jiangsu engineering and Technology research center for Microbiology Resource Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life Science nanjing Normal University nanjing china Yuru Chen 1 2 2.Department of Biotechnology Taizhou College nanjing Normal University Taizhou china Kewei Dai 3 3.School of Geography Science nanjing Normal University nanjing china Shijie Yang 4 4.School of Life Science and Environment College of Yichun Yichun china

Methods for separation of chlorogenic acid in tobacco materials *** liquid chromatography-mass spectrometry （LC-MS） method for identification and analysis of chlorogenic acids from tobacco material has been *** acid （CQA） were isolated by polyamide column chromatography and further purified by silica gel column *** revealed that polyamide is suitable for separation chlorogenic acid from tobacco *** eluant was collected for two-step column chromatography of *** content of chlorogenic acid of the purified product was 40.3%.After further purification by silica gel column chromatography,the content of total chlorogenic acids was 92.2%.The LC-MS results showed that total chlorogenic acids were made up of four components: 5-CQA,3-CQA,4-CQA and *** content of 5-CQA was the most （78.2%） and other three chlorogenic acid derivatives were 1.9%,10.1% and 2.0% respectively.

关键词： tobacco chlorogenic acid polyamide separation liquid chromatography-mass spectrometry (LC-MS)

First synthesis of albaconol from Albatrellus confluens on the human vanilloid receptor 1 (VR1) and its homoalbaconol

在线全文

cnki会议

学校读者我要写书评

暂无评论

First synthesis of albaconol from Albatrellus confluens on t...

The 3～(rd) International Conference on Natural Products :Natural Products -a Must for Human Survival ABSTRACTS

作者： Jinming Gao and Lei Wang Division of Natural Products Chemistry, Northwest Sci.-Tech. University of Agriculture and Forestry, Yangling 712100, Shaanxi, china national engineering research center for Phytochemistry in West china, Yangling 712100, china

It was found that the basidiomycete Albatrellus confluens (Polyporaceae) contained high concentrations of albaconol 11. Recent studies have shown that 1 acts as VR1 antagonists and induces contraction and desensitization of guinea pig trachea in vitro as a partial agonist for VR2. We first prepared 1 and its analogue homoalbaconol 2 from starting materials drimanal 3 and homodrimanal 4, respectively.

关键词：

A Province-Scale Maize Yield Estimation Method Based on TM and Modis Time-Series Interpolation

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Province-Scale Maize Yield Estimation Method Based on TM a...

第三届国际计算机及计算技术农业应用学术会议

作者： Xin He~1 Yuanshu Jing~(1 *) Xiaohe Gu~2 and Wenjiang Huang~2 1 Applied Meteorology College in nanjing University of Information Science and Technology nanjing Jiangsu Province 210044 P.R.china 2 national engineering research center for Information Technology in Agriculture Beijing 100097 P.R.china

＜正＞Crop yield estimation has always been important for social and government *** study was supported by six TM images in different growth period and a MODIS image which was stacked by eight 16-day NDVI images and covered the whole growth period of the maize in Shandong province in *** gaining the standards time-series growth curve of maize NDVI from MODIS image,we built the interpolated model which represented the maize characteristic growth,and then interpolated the TM images at different growth period into milky stage by using this *** on the medium-resolution data setting at milky stage and ground measured data, we built ground-medium resolution linear regression model and medium-low resolution multiple linear regression model for maize yield *** results showed that the accuracy of every city yield was high,completely more than 95%;and the accuracy of entire province production is 94%.This study attempted to carry out a business running system for province-scale maize yield estimation by remote sensing.

关键词： Maize TM MODIS Yield Estimation

Hybrid Multiplicative watermarking and Its Decoders

在线全文

cnki会议

学校读者我要写书评

暂无评论

Hybrid Multiplicative Watermarking and Its Decoders

第三届多媒体信息网络与安全国际会议

作者： Jinwei Wang Jiangsu engineering center of Network Monitoring School of Computer and Software nanjing University of Information Science and Technology nanjing china 210044Shiguo Lian France Telecom research and Development (Orange Labs) Beijing Beijing china 10080 Leiming Yan and Yuxiang Wang School of Computer and Software nanjing University of Information Science and Technology nanjing china 210044

With the rapid development and the richer content of the Internet, the copyright protection of the works should be further developed. The watermarking has become a possible solution. In this paper, firstly, a novel hybrid multiplicative rule is presented and utilized to embed the watermark into DWT coefficients controlled by the secret key. Secondly, the optimum and locally optimum hybrid multiplicative multi-watermarking decoders are proposed, respectively, which are based on the minimum Bayesian risk criterion. The DWT coefficients are modeled as the generalized Gaussian distribution. Nextly, the performance of the optimum hybrid watermarking decoder, i.e. the average bit error rate is theoretically analyzed. Then the security of the hybrid multiplicative watermarking scheme is compared with the existing schemes. Finally, experimental results prove the theoretical analysis valid.

关键词： hybrid embedding rule hybrid decoder opti- mum and lcoally optimum

Structure of the Manganese (V) Complex-Mn·3/2(μ-DHBQ)·4H_2O·2Cl

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2000年第7期11卷 645-648页

作者： Yi Xiang CHENG Mao Lin HU Ji Xin YUAN Yun Chu WANG(Department of Chemistry & Chemical engineering, Southeast University, nanjing 210096 Department of Chemistry, Wenzhou Teachers College, Wenzhou 325003) Dept. of Chem. and Chem. engineering Southeast University Nanjing 210096 China Department of Chemistry Wenzhou Teachers College Wenzhou 325003 China

The novel complex of Mn(V): Mn·3/2(μ -DHBQ)·4H2O·2Cl (where, H2DHBQ =2,5-dihydroxyl- 1,4-benzoquinone) was synthesized and its crystal structure has been determined by X-ray diffraction. The complex belongs to trigonal system with space group P3(# 147), a= 1 .415(2)nm, c=0.6552(4) nm, V=1 .1371(7) nm-3, Z=2, Dx=1.183 g/cm3, μ=7.37 cm-1, F(000)=408.00,R=0.041, Rw=0.046.

关键词： Manganese (V) crystal structure bridging ligand 2,5-dihydroxyl-1,4-benzoquinone