检索结果-南通市图书馆

Chinese Science Bulletin 2002年第8期47卷 641-643页

作者： XIE Daiqian & LU YuhuiInstitute of Theoretical and Computational Chemistry, department of Chemistry, Nanjing University, Nanjing 2.0093, china department of Chemistry, Sichuan University, Chengdu 610064, china Institute of Theoretical and Computational Chemistry Department of Chemistry Nanjing University Nanjing China department of Chemistry Sichuan University Chengdu China

A potential energy surface for the electronic ground state of carbonyl sulfide was optimized by using a self-consistent configuration-interaction method and involving the recently observed vibrational band origins up to 8000 cm-1. With the optimized potential, the vibrational energy levels of OCS up to 15000 cm-1 were computed using the discrete variable representation method and Lanczos algorithm. Approximately 480 vibrational energy levels were identified. The statistical investigation showed that the vibrational energy levels of OCS up to 15000 cm-1 are largely regular.

关键词： OCS potential energy surface vibrational spectra sta-tistical property.

DISCOVERY OF THE LATEST MARINE NON-CARBONATE SEDIMENT WESTERN TINGRI, SOUTHERN TIBET

在线全文

学校读者我要写书评

暂无评论

地学前缘 2000年第S1期7卷 54-55页

作者： Li Xianghui 1, Wang Chengshan 1, Hu Xiumian 1, Wan Xiaoqiao 2. and Xu Yulin 2.1 Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, china 2.Geology department, china University of Geosciences, Beijing 100083, china

The marine non\|carbonate sediment is exposed at the southwestern flank of the Zhepure Syncline where it lies about 4 km east to the typical cross\|section, Gongzha cross\|section (Hao and Wan, 1985; Willems et al., 1993, 1996) and ca.75km north to the Qomolangma. There are few people who can approach the place of the cross\|section, even so are endemic Tibetan. The cross\|section is named of the Qumiba cross\|section in this abstract. The new discovery, conformed on the massive Zhepure Formation limestone, here is named of Qumiba Formation. It is composed of two series of terrigenous sediments: Enba Member—lower gray shales intercalating with sandstones, and Zhaguo Member—upper reddish shales interbedding with sandstones. Abundant nannofossils with chronological meanings are first found *** Member Common calcareous nannofossils in the Lutetian such as Chiastozygus barbatus, Chiasmolithus sp., Discoaster barbadiensis, Helicosphaera compacta, Reticulofenstra bisecta, Sphenolithus radians are processed in sample S12.1\|S17W1, in which the Helicosphaera compacta and Sphenolithus radians are part of the indicators of the nannofossil zone NP15. So it is proposed that Units S12.|17, 110 m in thickness, could have been deposited during Middle\|Late Lutetian.

关键词： marine non\|carbonate sediment Tingri Southern Tibet

在线全文

学校读者我要写书评

暂无评论

脉动风压测压系统的优化设计

同济大学学报（自然科学版） 2002年第2期30卷 157-163页

作者：谢壮宁顾明汕头大学土木工程系广东汕头515063 同济大学桥梁工程系上海200092

利用基于高精度的流体管道耗散模型所建立起来的传递矩阵方法建立了小管径测压管路的动态特性分析数学模型 ,并对编写的计算程序作了相应的试验验证 .定义了控制系统频率响应品质的目标函数 ,并采用Matlab优化工具箱优化计算了 10 0 0m... 详细信息

利用基于高精度的流体管道耗散模型所建立起来的传递矩阵方法建立了小管径测压管路的动态特性分析数学模型 ,并对编写的计算程序作了相应的试验验证 .定义了控制系统频率响应品质的目标函数 ,并采用Matlab优化工具箱优化计算了 10 0 0mm长度传压管的最佳管路尺寸设计方案 ,得到较为满意的结果 ,同时也分析比较了采用加压扁管方法的误差。

关键词：脉动风压测量风洞试验优化设计频响函数流体管道耗散模型测压系统测压管路系统

关于(m,n)-交换理想半群的结构与交换性

在线全文

学校读者我要写书评

暂无评论

上海交通大学学报 1998年第8期32卷 118-121页

作者：黄骏敏上海交通大学应用数学系

研究（ｍ，ｎ）－交换理想半群的结构，藉此给出（ｍ，ｎ）－交换半群为交换半群的一个充分条件是该半群为理想半群．

关键词：交换半群理想半群 Rees同余

Investigation of Breaking Efficiency of N-Glycosidic Bond Between Sulfonamide and Honey

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2012年第2期28卷 195-199页

作者： WANG Yan-hua LI Li CHEN Chia-hung CHENG Shuenn-ren LEE Mu-sheng YU Pu-ping CHANG-CHIEN Guo-ping College of Biology and Enviornmental Engineering Zhejiang Shuren University Hangzhou 310015 P. R. China Super Micro Mass Research ＆ Technology Center department of Business Administration department of Mechanical Engineering Cheng Shiu University Kaohsiung 833 Taiwan P. R. China Environmental Protection Bureau Kaohsiung City Government Keelung 20143 Taiwan P. R. China

Sulfonamide residue in honey existed in a form bonded to sugar via the N-glycosidic *** would result in the possible underestimation of concentration of sulfonamide if it is not decomposed by chemical ***,in china's Mainland and Taiwan（***）,the regulation for sulfonamide residue analysis does not include hydrolysis and has been applied to a very broad range of samples,for example,egg,milk,meat,seafood as well as *** paper demonstrates the necessity of hydrolysis of it prior to extracting *** breaking efficiencies of N-glycosidic bond were investigated by 2.mol/L hydrochloric acid,pure methanol and 0.5 mol/L hydrochloric acid in methanol,*** was found that acid plays the key role in breaking the N-glycosidic bond,and it was also noticed that the dissolution of liberated sulfonamide in methanol could carry the reaction forward in favor of breaking the N-glycosidic bond.

关键词： Sulfonamide Honey Liquid chromatography-electrospray ionization tandem mass spectrometry(LC-ESIMS/MS) N-Glycosidic bond

The Normality of Cayley (Di)graphs of Out-valency 3 of Dihedral Group of Order 4p

在线全文

学校读者我要写书评

暂无评论

Communications in Mathematical Research 1999年第2期 47-56页

作者： Zhou Jie (department of mathematics, Northeast Normal University, Changchun, 13002.)

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＬｅｔＧｂｅａｆｉｎｉｔｅｇｒｏｕｐａｎｄＳａｓｕｂｓｅｔｏｆＧｎｏｔｃｏｎｔａｉｎｉｎｇｔｈｅｉｄｅｎｔｉｔｙｅｌｅｍｅｎｔ１ｏｆＧ．ＷｅｄｅｆｉｎｅｔｈｅＣａｙｌｅｙ（ｄｉ）ｇｒａｐ... 详细信息

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＬｅｔＧｂｅａｆｉｎｉｔｅｇｒｏｕｐａｎｄＳａｓｕｂｓｅｔｏｆＧｎｏｔｃｏｎｔａｉｎｉｎｇｔｈｅｉｄｅｎｔｉｔｙｅｌｅｍｅｎｔ１ｏｆＧ．ＷｅｄｅｆｉｎｅｔｈｅＣａｙｌｅｙ（ｄｉ）ｇｒａｐｈＸ＝Ｃａｙ（Ｇ，Ｓ）ｏｆＧｗｉｔ...

关键词： Cayley (De)graph Normal Cayley (Di)graph Dihedral Group

CODING-ORIENTED MULTI-VIEW VIDEO COLOR CORRECTION

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Electronics(china) 2008年第6期25卷 721-727页

作者： Shao Feng Jiang Gangyi Yu Mei Chen Xiexiong Faculty of Information Science and Engineering Ningbo University Ningbo 315211 China National Key Lab of Software New Technology Nanjing University Nanjing 210093 China department of Information and Electronics Engineering Zhejiang University Hangzhou 310027 China

Color inconsistency between views is an important problem to be solved in multi-view video applications, such as free viewpoint television and other three-dimensional video systems. In this paper, by combining with multi-view video coding, a coding-oriented multi-view video color correction method is proposed. We first separate foreground and background in first Group Of Pictures （GOP） by using SKIP coding mode. Then by transferring means and standard deviations in backgrounds, color correction is performed for each frame in GOP, and multi-view video coding is performed and used to renew the backgrounds. Experimental results ances in color correction and multi-view video show the proposed method can obtain better performcoding.

关键词： Multi-view video Color correction Multi-view video coding Background

Multiary turbo code fitting for unitary space-time modulation and its MAP decoding algorithm

在线全文

学校读者我要写书评

暂无评论

Science china(Information Sciences) 2010年第12期53卷 2610-2619页

作者： ZHANG DaPeng 1,2.3,LU Ju 1,XU HongJi 1 & ZHANG XingYu 1 1 School of Information Science and Engineering,Shandong University,Jinan 2.0100,china 2.State Key Laboratory of Integrated Services Networks,Xidian University,Xi'an 710077,china 3 {2. of Avionics Engineering,First Aeronautical College of the Air Force,Xinyang 464000,china 1. School of Information Science and Engineering Shandong University Jinan 250100 China2. State Key Laboratory of Integrated Services Networks Xidian University Xi’an 710077 China3. Department of Avionics Engineering First Aeronautical College of the Air Force Xinyang 464000 China

Unitary space-time modulation(USTM) fits for rapid Rayleigh flat fading channels as it can realize wireless communication when neither the transmitter nor the receiver knows the channel state information(CSI).However,an intrinsic problem is that only when the signal-to-noise ratio(SNR) is high can it give an ideal bit error rate(BER) *** existing bit-wise processing scheme of the combination of turbo code and USTM improves the BER performance and results in an unacceptable calculation complexity,storage and time delay *** this paper,we propose a multiary processing scheme and its corresponding multiary MAP decoding *** results verify that our scheme can reduce the system complexity while keep a good BER ***,we present the first analysis of the reason for the BER performance deterioration of the combination scheme at low SNR with the help of the definition of USTM.

关键词： multiple-input multiple-output unitary space-time modulation turbo code MAP decoding diversity

Understanding Adsorption and Separation behavior of alkane mixtures in Zeolitic Imidazolate Frameworks by molecular simulations

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Understanding Adsorption and Separation behavior of alkane m...