检索结果-南通市图书馆

Decolourization of Reactive Brilliant Blue KN-R by immobilized cells of Aspergillus ficuum

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 2003年第3期15卷 377-382页

作者： DONG Xin-jiao, CHEN Zhu (department of Biology & environmental science, Wenzhou Normal College, Wenzhou 325003, china.) department of Biology & environmental science Wenzhou Normal College Wenzhou 325003 Chin

Aspergillus ficuum was immobilized with sodium alginate, and decolourization of Reactive Brilliant Blue KN-R was studied on immobilized and free Aspergillus ficuum. The optimal preparation condition of the strain immobilization was obtained by the orthogonal test, it is sodium alginate 3%, CaCl_2 5%, wet mycelia 30 g/L, calcific time 8 h. It was found that the immobilized cells could effectively decolourize Reactive Brilliant Blue KN-R, the optimum temperature and pH were 33℃ and 5.0, respectively. The kinetics study of decolourization of immobilized cells showed that the decolourization of Aspergillus ficuum immobilized conformed to zero-order reaction model. The decolourization efficiency of immobilized cell compared with that of free cell in different physical conditions. Results showed that the decolourization of immobilized cells with mycelia had the best efficiency. The immobilized cells could be reused after the first decolourization.

关键词： immobilized cell Reactive Brilliant Blue KN-R decolourization Aspergillus ficuum

Generative computer simulation for parallel layout of multi-story row house cluster

在线全文

学校读者我要写书评

暂无评论

science china(Technological sciences) 2010年第7期53卷 1785-1791页

作者： DING XiYing1,2 1 ZhenjiangUniversity, Hangzhou 310058, china 2 Zhejiang University of science & technology, Hangzhou 310058, china 1. Zhenjiang University Hangzhou 310058 China2. Zhejiang University of Science & Technology Hangzhou 310058 China

This study has established the functions between the environmental conditions and the inhabitants’ preferences for multi-story row house cluster with parallel layout, based on the data from the questionnaires’ in Beijing. A program has been written with multi-agent system and generative computer simulation approaches. The emergence candidate layout plans can be referenced and chosen by architects.

关键词： multi-agent system bottom up generative computer simulation multistory row house cluster parallel layout

Phase Separation and Theta-compositions of PPES/NMP/non-solvent Systems

在线全文

学校读者我要写书评

暂无评论

Journal of Materials science & technology 2005年第3期21卷 430-432页

作者： Yi SU and Xigao JIAN department of Polymer science, Dalian University of technology, Dalian 116012, china department of Polymer science Dalian University of Technology Dalian 116012 China

Poly (phthalazinone ether sulfone) (PPES) with 1:1 and 1:3 ratios of bisphenol A (BPA) unit to phthalazinone unit were selected as samples. Polymer precipitation curves for the ternary systems PPES (1:1)/NMP/ non-solvent and PPES (1:3)/NMP/non-solvent were determined by a titration method. Comparison between two sets of data is made. Non-solvents used were H2O, ethyl ether (EE), diethylene glycol (DEGC), ethyleneglycol methylether (EGME) and butanone (BO). NMP/non-solvent theta-compositions for PPES (1:1) and PPES (1:3) were also estimated. It was found that the volume ratio of non-solvent to NMP at the property mutation or worsening of PPES membrane is close to the theta-composition.

关键词： Polymer precipitation curve Poly (phthalazinone ether sulfone) Theta-composition

Microwave thermal remediation of crude oil contaminated soil enhanced by carbon fiber

在线全文

学校读者我要写书评

暂无评论

Journal of environmental sciences 2009年第9期21卷 1290-1295页

作者： LI Dawei,ZHANG Yaobin,QUAN Xie,ZHAO Yazhi Key Laboratory of Industrial Ecology and environmental Engineering,Ministry of Education of china,School of environmental and Biological science and technology,Dalian University of technology,Dalian 116024,china [a]Key Laboratory of Industrial Ecology and environmental Engineering Ministry of Education of China School of Environmental and Biological Science and Technology Dalian University of Technology Dalian 116024 China

Thermal remediation of the soil contaminated with crude oil using microwave heating enhanced by carbon fiber （CF） was explored. The contaminated soil was treated with 2.45 GHz microwave, and CF was added to improve the conversion of microwave energy into thermal energy to heat the soil. During microwave heating, the oil contaminant was removed from the soil matrix and recovered by a condensation system of ice-salt bath. The experimental results indicated that CF could efficiently enhance the microwave heating of soil even with relatively low-dose. With 0.1 wt.% CF, the soil could be heated to approximately 700℃ within 4 min using 800 W of microwave irradiation. Correspondingly, the contaminated soil could be highly cleaned up in a short time. Investigation of oil recovery showed that, during the remediation process, oil contaminant in the soil could be efficiently recovered without causing significant secondary pollution.

关键词： microwave heating crude oil remediation carbon fiber

On the reconstruction of Dirichlet-to-Neumann map in inverse scattering problems with stability estimates

在线全文

学校读者我要写书评

暂无评论

science china Mathematics 2010年第8期53卷 2069-2084页

作者： WANG HaiBing 1,2 & LIU JiJun 1 1 department of Mathematics,Southeast University,Nanjing 210096,china 2 School of Mathematics and Computational science,Hunan University of science and technology,Xiangtan 411201,china 1. department of Mathematics Southeast University Nanjing 210096 China2. School of Mathematics and Computational Science Hunan University of Science and Technology Xiangtan 411201 China

Consider the determination of Dirichlet-to-Neumann(D-to-N) map from the far-field pattern in inverse scattering problems,which is the key step in some recently developed inversion schemes such as probe ***,this problem is related to the reconstruction of the scattered wave from its far-field *** firstly prove the well-known uniqueness result of the D-to-N map from the far-field pattern using a new scheme based on the mixed reciprocity *** advantage of this new proof scheme is that it provides an efficient algorithm for computing the D-to-N map,avoiding the numerical differentiation for the scattered *** combining with the classical potential theory,a simple and feasible regularizing reconstruction scheme for the D-to-N map is *** the stability estimate for the reconstruction with noisy input data is rigorously analyzed.

关键词： inverse scattering Dirichlet-to-Neumann map regularization mixed reciprocity principle stability

AN INVARIANCE OF CDF EQUATION

在线全文

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 1994年第2期15卷 241-246页

作者： TIAN CHOU(department of Matehematics,University of science and technology of china, Hefei 230064, Anhui, china) UNIV SCI & TECHNOL china DEPT MATHHEFEI 230026PEOPLES R CHINA

This paper presents a new invariance for the CDF equation. Using this invariance, the author obtains some new solutions of CDF equation.

关键词： CDF equation Invariance MKdV equation.

Desulfurization of Nickel Pyrrhotite by Steam in the Microwave Field

在线全文

学校读者我要写书评

暂无评论

Journal of Materials science & technology 2001年第5期17卷 561-564页

作者： Jinhui PENG and Chunpeng LIU department of Metallurgy, Kunming University of science and technology, Kunming 650093, china Kunming Univ Sci & Technol Dept Met Kunming 650093 Peoples R China

Desulfurization of Ni pyrrhotite by steam in the microwave field was studied. According to the experimental data, the desulfurization rate by microwave heating is faster than that by conventional one. The desulfurization reaction is in a non-isothermal state and in a diffusion control because of the effect of chemical reaction heat, phase formation and intrinsic properties of materials of microwave absorbability. When the flow rate of steam was in the range of 180 similar to 220 mL/min, the temperature and desulfurization rate approached to a maximum and the activation energy to a minimum.

关键词： Ni Desulfurization of Nickel Pyrrhotite by Steam in the Microwave Field

SUPERCONVERGENCES OF THE ADINI'S ELEMENT FORSECOND ORDER EQUATION

在线全文

学校读者我要写书评

暂无评论

Journal of Computational Mathematics 1999年第6期17卷 569-574页

作者： Ping Luo(department of Computer science and technology, Qinghua University, Beijing 100084,china)Qun Lin(Institute of Systems science, Academia Sinica, Beijing, 100080, china) Tsing Hua Univ Dept Comp Sci & Technol Beijing 100084 Peoples R China Acad Sinica Inst Syst Sci Beijing 100080 Peoples R China

n this papers the asymptotic error expansions of Adini's element for the secondorder imhomogeneous Neumann problem are given and the superconvergence estimations are obtained. Moreover, a numerical example to support ... 详细信息

关键词： Adini's element Superconvergence estimation Asymptotic expansion.

Synthesis and Lubrication of Phosphorylcholine Derivative

在线全文

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2010年第3期7卷 254-258页

作者： Zhenliang Qiao~1, Dangsheng Xiong~1, Lude Lu~2, Pengju Jiang~2 1. department of Materials science and Engineering, Nanjing University of science and technology, Nanjing 210094, P.R. china 2. School of Chemical Engineering, Nanjing University of science and technology, Nanjing 210094, P. R. china [a] department of Materials science Engineering Nanjing University of Science technology Nanjing 210094 P.R. China [b] School of Chemical Engineering Nanjing University of Science technology Nanjing 210094 P. R. China

The monomer of phosphorylcholine derivative, O-(5-（2-methacryloxy）-3, 3-dimethyl-3-azapentyl)-O’-（ω-hydroxy-octyl）-phosphatequaternary ammonium salt, was designed and synthesized successfully. It was characterized by the spectra ofHNMR and Mass spectra （ESI+）, and every signal was assigned. Then the lubricating characteristics of the phosphorylcholinederivative were investigated on the tribological setup of ball-oh-flat. The Ultra-High Molecular Weight Polyethylene（UHMWPE） flat was rotated against a stainless steel ball with 6 mm diameter. The load was 2.3 N, which corresponded to amaximal Hertz contact pressure of 29 MPa. Water, phosphorylcholine derivative, and Acrylic Acid （AA） solution were used aslubricants, respectively. Compared with AA, the phosphorylcholine derivative shows significant lubrication. It can be stronglyhydrated under water due to the charged segment in chemical structure. The thick water layers within the chains serves asboundary lubricants, and this is thought to be the molecular origins of lubricating behavior.

关键词： artificial joint articular cartilage molecular lubrication mechanism phosphorylcholine synthesis UHMWPE