检索结果-南通市图书馆

Systematic screening procedure and innovative energy-saving design for ionic liquid-based extractive distillation process

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2023年第1期17卷 34-45页

作者： Tuanjie shen Liumei Teng Yanjie Hu Weifeng shen Anhui XinShiJi Pharmaceutical Co. Ltd.Hefei 230000China School of Materials Science and Engineering Chongqing University of Arts and SciencesChongqing 402160China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China

In the traditional extractive distillation process,organic solvents are often used as ***,environmental influence and high energy-consumption are significant problems in industrial *** this study,a systematic screening strategy and innovative energy-saving design for ionic liquid-based extractive distillation process was *** innovative energy-saving design focused on the binary minimum azeotrope mixtures isopropanol and ***,environmental impact and physical properties(e.g.,melting point and viscosity)of 30 ionic liquids were investigated.1-Ethyl-3-methyl-imidazolium dicyanamide and 1-butyl-3-methyl-imidazolium dicyanamide were selected as candidate *** analysis of these two ionic liquids was further performed via residue curve maps,isovolatility line and temperature *** innovative ionic liquid-based extractive distillation process combining distillation column and stripping column was designed and optimized with the objective function of minimizing the total annualized *** results demonstrate that the total annualized cost was reduced by 19.9%with 1-ethyl-3-methyl-imidazolium dicyanamide as the entrainer and by 24.3%with 1-butyl-3-methyl-imidazolium dicyanamide,compared with that of dimethyl *** method proposed in this study is conducive to the green and sustainable development of extractive distillation process.

关键词： ionic liquid entrainer screening feasibility analysis extractive distillation

同方期刊数据库

Ultrasound enhancement of the reduction of the Basic Green dye in wastewater by cast iron

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2006年第1期18卷 1-3页

作者： shen Zhuang-zhi shen Jian-zhong Institute of Acoustics Chinese Academy of Sciences Beijing 100080 China

Dyes in wastewater are of particular environmental concern since they give an undesirable color to the waters, dye and their derivatives are harmful to human health and the environment （ Annadurai et al., 2002）. Due to their biological persistency, conventional biological treat-ment processes such as activated sludge process are ineffective for their removal（Shaul et al., 1991）. There is a need to develop effective methods for the degradation of such persistent organic pollutants, either to less harmful compounds or, more desirable, to their complete mineralization.

关键词： cast iron ultrasound Basic Green combined effect

Genomic instability and cancer:an introduction

在线全文

学校读者我要写书评

暂无评论

Journal of Molecular Cell Biology 2011年第1期3卷 1-3页

作者： Zhiyuan shen The Cancer Institute of New Jersey and Department of Radiation OncologyRobert Wood Johnson Medical SchoolUniversity of Medicine and Dentistry of New Jersey195 Little Albany StreetNew BrunswickNJ 08903USA

Genomic instability refers to an increased tendency of alterations in the genome during the life cycle of *** is a major driving force for *** a cell division,genomic instability is minimized by four major mechanisms:high-fidelity DNA replication in S-phase,precise chromosome segregation in mitosis,error free repair of sporadic DNA damage,and a coordinated cell cycle *** introduction summarizes the major molecular processes that contribute to these mechanisms in the context of prevention of genomic instability and tumorigenesis.

关键词： alterations damage precise

Why Can We Copy Classical Information？

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

Chinese Physics Letters 2011年第1期28卷 30-31页

作者： shen Yao Key Laboratory for Atomic and Molecular Nanosciences and Department of Physics Tsinghua University Beijing 100084 Tsinghua National Laboratory for Information Science and Technology Tsinghlza University Beijing 100084

It is pointed out that the noneloning theorem in quantum mechanics also holds for unknown state in linear classical physics. The apparent capability of copying of a classical state is essentially the capability of perfect measurement in classical physics. The difference in copying- between quantum and classical physics is the difference in measurement between the two theories. A classical copying process is the combined action of measurement of an unknown state and the preparation of this state onto another system. Hence perfect measurability in classical physics enables the copying of a classical state.

关键词： Physics Measurement

MATERIAL CONSTANTS OF AN Al-Li-Cu-Mg-Zr ALLOY DURING DEFORMATION AT ELEVATED TEMPERATURES

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

中国有色金属学会会刊：英文版 1998年第1期8卷 79-83页

作者： Jian, shen General Research Inst for Non-ferrous Metals Beijing China

ＭＡＴＥＲＩＡＬＣＯＮＳＴＡＮＴＳＯＦＡＮＡｌＬｉＣｕＭｇＺｒＡＬＬＯＹＤＵＲＩＮＧＤＥＦＯＲＭＡＴＩＯＮＡＴＥＬＥＶＡＴＥＤＴＥＭＰＥＲＡＴＵＲＥＳ①ＳｈｅｎＪｉａｎＧｅｎｅｒａｌＲｅｓｅａｒｃｈＩｎｓｔｉ... 详细信息

ＭＡＴＥＲＩＡＬＣＯＮＳＴＡＮＴＳＯＦＡＮＡｌＬｉＣｕＭｇＺｒＡＬＬＯＹＤＵＲＩＮＧＤＥＦＯＲＭＡＴＩＯＮＡＴＥＬＥＶＡＴＥＤＴＥＭＰＥＲＡＴＵＲＥＳ①ＳｈｅｎＪｉａｎＧｅｎｅｒａｌＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｆｏｒＮｏｎｆｅｒｏｕｓ...

关键词： aluminiumlithium alloy compression flow stress activation energy

Theoretical analysis of mass distribution of quasifission for ^(238)U-induced reactions

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2014年第3期57卷 453-457页

作者： shen JunJie shen CaiWan School of Science Huzhou Teachers College

Fragment mass distributions of quasifission induced by 238U on 160, 26Mg, 32S, 35C1, 40Ca and 65Zn targets at several bombarding energies have been calculated with the two-step model. The experimental data are reproduced consistently, and the mechanism of the distribution shape is also analyzed by investigating the different incident channels.

关键词： quasifission mass distribution fusion

3D fracture modelling and limit state analysis of prestressed composite concrete pipes

在线全文

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2019年第1期13卷 165-175页

作者： Pengfei HE Yang shen Yun GU Pangyong shen School of Aerospace Engineering and Applied Mechanics Tongji UniversityShanghai 200092China Shanghai SMI Engineering Project Management Co. Ltd.Shanghai 201103China

In this manuscript,we study fracture of prestressed cylindrical concrete *** concrete pipes play a major role in tunneling and underground *** structure is modelled fully in 3D using three-dimensional continuum elements for the concrete structure which beam elements are employed to model the *** allows the method to capture important phenomena compared to a pure shell model of concrete.A continuous approach to fracture is chosen when concrete is subjected to compressive loading while a combined continuous-discrete fracture method is employed in *** model is validated through comparisons with experimental data.

关键词： cylindrical concrete structures limit state analysis 3D fracture modelling prestressed composite pipes reinforced concrete three-point bending test

Pre-treatment to Improve the Bake-hardening Response in the Naturally Aged Al-Mg-Si Alloy

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

Journal of Materials Science & Technology 2011年第3期27卷 205-212页

作者： Chin-Hui shen Department of Mechanical Engineering Army Academy No.750Longdong Rd.Zhongli CityTaoyuan County 320TaiwanChina

This paper describes pre-treatment methods to improve the bake-hardening response of naturally aged AA6022 （Al-0.6Mg-1.0Si）, which is an alloy used in automotive body panels. These methods are used to accelerate the artificial aging process, which proceeds 30-day period of natural aging. The precipitation behavior of the sheets of this aluminum alloy was analyzed by differential scanning calorimetry （DSC） and electrical conductivity measurements, and subsequently confirmed by microstructure observations by transmission electron microscopy （TEM）. Tensile tests and microhardness measurements were performed to determine the mechanical properties of the samples. Under simulated paint-baking conditions （30 min at 170℃）, the microhardness and the yield strength （YS） of the pre-strained ＋ pre-aged samples were found to be I13 HV and 225 MPa, respectively. These values are considerably higher than those of pre-aged samples, and they did not decrease significantly during the initial stage of artificial aging.

关键词： Pre-aging Pre-straining Natural aging and Bake hardening

A correction of the 2D KdV equation of Djordjevic & Redekopp in exponentially stratified fluid

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2005年第4期21卷 346-352页

作者： Zhaoting Xu Guojin shen Samuel Shan-pu shen Institute Of Physical Oceanography and Physical Oceanography Laboratory Ocean University of China Qingdao 266003 China Department of Mathematics and Statistics Science University of Alberta Edmonton Alberta T6G 2G 1 Canada

To further study the nal solitons on the continental fission laws of initial intershelf/slope, we rederive and correct the 2D KdV equation of Djordjevic ＆ Redekopp for exponentially stratified fluid （or ocean） and with twodimensional topography. Through a combination of theoretical study and numerical experiments, we show that solitons in the odd vertical modes can fission. However, because of the corrections, the fission conditions are different from those of Djordjevic ＆ Redekopp. The even modes cannot fission unless the initial internal solitons propagate from shallow sea to deep sea. This conclusion is entirely opposite to that of Djordjevic ＆ Redekopp.

关键词： Internal wave Soliton Fission 2D KdV equation