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改善棉子油生物柴油低温流动性的研究

棉花学报 2011年第1期23卷 75-79页

作者：陈秀来永斌安徽理工大学化学工程学院安徽淮南232001 安徽理工大学机械工程学院安徽淮南232001

使用气-质联用仪分析棉子油生物柴油的组成,运用低温性能测试仪和生物柴油的结晶机理研究CME的低温流动性,提出了改善CME低温流动性的三种措施:结晶分馏,与低温石油柴油调和,或添加低温流动性改进剂。建立了基于CME调和比例的冷滤点预... 详细信息

使用气-质联用仪分析棉子油生物柴油的组成,运用低温性能测试仪和生物柴油的结晶机理研究CME的低温流动性,提出了改善CME低温流动性的三种措施:结晶分馏,与低温石油柴油调和,或添加低温流动性改进剂。建立了基于CME调和比例的冷滤点预测模型。研究表明:CME主要由脂肪酸甲酯(C14:0～C24:0,C16:1～C22:1,C18:2和C18:3)组成,其中饱和脂肪酸甲酯(SFAME)和不饱和脂肪酸甲酯(UFAME)的质量分数分别为32.12%和66.19%,冷滤点为6℃。结晶分馏,冷滤点降到-1℃;与-10号柴油(-10PD)调和,冷滤点最低可降到-12℃;在Flow Fit,Flow Fit K和T818的体积分数均不超过1.5%时,CME及CME与-10PD的调和油(CME/-10PD)的冷滤点分别最低降到0℃和-26℃。

关键词：生物柴油低温流动性结晶气相色谱-质谱

The Structure, Function, and Stability of Pyruvate Dehydrogenase PDHA1

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The Structure, Function, and Stability of Pyruvate Dehydroge...

Establishing 1H nuclear magnetic resonance based metabonomics fingerprinting profile for spinal cord injury： a pilot study

中国生物化学与分子生物学会2016年全国学术会议

作者： Weicai chen Zhifa Cao Qing Sheng Wen-bin Ou Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine College of Life Sciences Zhejiang Sci-Tech University Zhejiang Provincial Key Laboratory of Applied Enzymology Yangtze Delta Region Institute of Tsinghua University

Pyruvate dehydrogenase(PDH)is a multi-enzyme complex in mitochondrion,which plays the crucial function in substance and energy *** catalyzes the decarboxylation of pyruvic acid to produce acetyl coenzyme A,and acetyl coenzyme A serves as the primary raw material to bring the glucose into the aerobic oxidation of tricarboxylic acid cycle

关键词： PDHA1 mutation activity structure

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Chinese Medical Journal 2010年第17期123卷 2315-2319页

作者： JIANG Hua PENG Jin ZHOU Zhi-yuar DUAN Yu chen Wei CAI bin YANG Hao ZHANG Wei Metabonomics and Multidisciplinary Laboratory for Trauma Research Trauma Surgery East Branch of Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital Chengdu Sichuan 610101 China Department of Histology Embryology and Neurobiology of West China Medical School Sichuan University Chengdu Sichuan 610041 China Department of Biochemistry Luzhou Medical College Luzhou Sichuan 646000 China Department of Parenteral & Enteral Nutrition Peking Union Medical College Hospital Beijing 100730 China Department of Mathematics Sichuan University Chengdu Sichuan 610041 China

Background Spinal cord injury （SCI） is a complex trauma that consists of multiple pathological mechanisms involving cytotoxic, oxidation stress and immune-endocrine. This study aimed to establish plasma metabonomics fingerprinting atlas for SCI using 1H nuclear magnetic resonance （NMR） based metabonomics methodology and principal component analysis *** Nine Sprague-Dawley （SD） male rats were randomly divided into SCI, normal and sham-operation control groups. Plasma samples were collected for 1H NMR spectroscopy 3 days after operation. The NMR data were analyzed using principal component analysis technique with Matlab *** Metabonomics analysis was able to distinguish the three groups （SCI, normal control, sham-operation）. The fingerprinting atlas indicated that, compared with those without SCI, the SCI group demonstrated the following characteristics with regard to second principal component： it is made up of fatty acids, myc-inositol, arginine, very low-density lipoprotein （VLDL）, low-density lipoprotein （LDL）, triglyceride （TG）, glucose, and *** The data indicated that SCI results in several significant changes in plasma metabolism early on and that a metabonomics approach based on 1H NMR spectroscopy can provide a metabolic profile comprising several metabolite classes and allow for relative quantification of such changes. The results also provided support for further development and application of metabonomics technologies for studying SCI and for the utilization of multivariate models for classifying the extent of trauma within an individual.

关键词： metabonomic spinal cord injury 1H nuclear magnetic resonance principal component analysis

A Class of Standard Bases of Polynomial Algebras and Its Applications

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Journal of Mathematical Research and Exposition 2009年第2期29卷 191-201页

作者： DONG Jing cheng LI Li bin chen Hui Xiang School of Mathematics Yangzhou University Jiangsu 225002 China College of Engineering Nanjing Agricultural University Jiangsu 210031 China

Let H = uq（sl（2）） or u（sl（2））. By means of the standard basis of polynomial algebras, the Glebsch-Gordan formula and quantum Clebsch-Gordan formula are proved by a unified method, and the explicit formula of t... 详细信息

关键词： standard basis quantum group Clebsch-Gordan formula Grothendieck ring.

Evolution of TiNi precipitates in TiNi alloy during equal channel angular pressing

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Transactions of Nonferrous Metals Society of China 2021年第4期31卷 980-987页

作者： Jia-rui REN Alexander V.SHUITCEV bin SUN Feng chen Li LI Yun-xiang TONG Institute of Materials Processing and Intelligent Manufacturing College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Center of Testing and Analysis College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China

The evolution of Ti3Ni4 precipitates in Ti49.2Ni50.8 alloy during equal channel angular pressing(ECAP) and intermediate annealing was investigated by transmission electron microscopy. The solution-treated Ti49.2Ni50.8 alloy was aged at 450 ℃ for 10 to 60 min to obtain Ti3Ni4 precipitates ranging from 37 to 75 nm. After ECAP at 450 ℃ for one pass, Ti3Ni4 precipitates introduced by aging for 10 and 30 min totally dissolve into the matrix;however, those produced by aging for 60 min become smaller. The critical size of Ti3Ni4 precipitates to totally dissolve into matrix is determined to be in the range of 37-68 nm. The dislocation density of ECAP-processed samples depends on the initial size of Ti3Ni4 precipitates after aging. With increasing the duration of initial aging from 10 to 60 min, the dislocation density firstly increases and then decreases.

关键词： TiNi shape memory alloy equal channel angular pressing dislocation precipitation Ti3Ni4 phase

Genotoxic and Biological Evaluation of a Nano Silica Cross Linked Composite Specifically Used for Intra-Vas Device

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Soft Nanoscience Letters 2012年第3期2卷 23-28页

作者： Shu-Jian chen Yao Bai Xun-bin Huang Jin-Ping Suo Juan Li Family Planning Research Institute Tongji Medical College Huazhong University of Science and Technology State Key Labora- tory of Mould Technology College of Materials Science and Engineering Huazhong University of Science and Technology Wuhan Institute of Environmental Medicine School of Public Health Tongji Medical College Huazhong University of Science and Technology Wuhan China.

The Context: Aims: To evaluate the biocompatibility and in vitro genotoxicity of a non-copper nano silica polymer modified composite for filtering-type intra-vas devices. Settings and Design: Academic research laboratory, Huazhong University of Science and Technology. Prospective experimental study. Methods and Material: Non-copper nano silica polymer modified composite rods were implanted into the back muscle of rabbits for biocompatibility evaluation. Comet assay was applied to the determination of DNA damage, while, Mutagenic activity was tested by means of Ames test using Salmonella typhimurium TA98 and TA 100 tester strains with and without metabolic activation. Statistical analysis used: qualitative and quantitative data were tested using the Chi-square test and Student’s test. Results: Only mild inflammatory reaction was observed in the surrounding tissues of the implanted nano-silica modified polymer composite in the early implantation stage, which was similar to that of the sham-operated group. The inflammatory reaction was completely disappeared after 12 weeks. No significant DNA damage (P > 0.05) were tested on the nano-silica modified polymer composite in Comet assay. In Ames test, the extracts from non-copper composite did not exert mutagenic effect on the bacterial. Conclusions: The non-copper nano silica modified composite did not exhibit in vitro genotoxicity and obvious inflammation in tissue, it would be a safe biomaterial for further clinical trial.

关键词： Nano Silica Genotoxicity Biocompatibility Intra-Vas Device Composite

Research of multilayers in EUV, soft X-ray and X-ray

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光学精密工程 2005年第4期13卷 512-518页

作者： WANG Zhan-shan WANG Feng-li ZHANG Zhong WANG Hong-chang WU Wen-juan ZHANG Shu-min XU Yao GU Zhong-xiang chenG Xin-bin L1 Cun-xia WU Yong-rong WANG Bei QIN Shu-jin chen Ling-yan Institute of Precision Optical Engineering Department of Physics Tongji University Shanghai 200092 China

To develop beam splitters for soft X-ray laser Michelson interferometer at 13.9 nm, Mo/Si multilayers of 100 nm thickness deposited on both sides of silicon nitride were fabricated by using DC magnetron sputtering. Initial evaluation of their reflectivity and transmission showed that reflectivity and transmission were above 10% and 25%. The broadband analyzers have been designed, fabricated and characterized for 13～20 nm polarization measurements. The measured results are in good agreement with the design. The supermirrors with different angular intervals at 0.154 nm have been designed, fabricated and characterized.

关键词： EUV X射线多层性激光宽带光纤

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常规空调大温差水系统的适用性分析

暖通空调 2009年第3期39卷 78-82,26页

作者：李斌陈剑中南建筑设计院福星惠誉房地产有限公司

对常规温差、大温差空调水系统各构成元素的耗电量进行了对比分析,引入水泵耗功率系数,分别给出采用满负荷评价法和部分负荷综合评价法时常规空调适于采用大温差水系统的水泵耗功率系数参考值。

关键词：常规空调系统大温差水系统耗电量水泵耗功率系数

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超精密加工中的微位移技术

同济大学学报（自然科学版） 2000年第6期28卷 684-687页

作者：马淑梅陈彬同济大学机械工程系上海200092 中国外汇交易中心工程技术部上海200002

微位移技术是实现超精密加工的重要途径 ,据此介绍了微位移的实现方法 ,并对压电陶瓷微位移机构系统作了进一步的介绍 ,阐述了系统的组成、工作原理、结构及特点 .最后进行了采用MCS - 5 1系列单片机控制的压电陶瓷微位移机构闭环控制... 详细信息

微位移技术是实现超精密加工的重要途径 ,据此介绍了微位移的实现方法 ,并对压电陶瓷微位移机构系统作了进一步的介绍 ,阐述了系统的组成、工作原理、结构及特点 .最后进行了采用MCS - 5 1系列单片机控制的压电陶瓷微位移机构闭环控制系统来提高工件的面形精度的实验 .结果表明 ,工件的面形精度提高了 5 0

关键词：微位移技术超精密加工压电陶瓷