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Evaluation of Microwave Plasma Torch (MPT) as an Excitation Source for Determination of Mercury

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Chemical Research in Chinese Universities 1992年第1期8卷 31-32页

作者： Duan Yixiang, Du Xiaoguang and Jin Qinhan (department of Chemistry, jilin university, changchun)

The microwave plasma atomic spectrometry is an important branch of the plasma atomic spectrometry. Since the first use of microwave induced plasma（MIP） as an excitation source for spectral Chemical analysis by Broida and Chapmanin in 1958, especially the introduction of TM;cavity by Beenakker in 1976 and of surfatron by Moisan in 1979 with which an atmospheric pressure helium MIP could be obtained, MIP has received considerable attention as a new excitation source for spectrometric analysis. However, since MIP suffers from the in ability to analyse the aqueous sam-

关键词： Microwave plasma torch Atomic spectrometry Mercury determination

FTIR Spectroscopic Studies on the Conformational Equilibrium of Liquid 2,4-Dimethyl-1,3-Pentadiene

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Chemical Research in Chinese Universities 1995年第2期11卷 131-136页

作者： ZHAO Bing,ZHANG Sou-bo and LIU Ju-zheng(Institute of Theoretical Chemistry,department of Chemistry,jilin university,changchun,130023)FU Hong-gang (department of Chemistry,Heilongjiang university,Harbin,150000) jilin UNIV DEPT CHEMINST THEORET CHEMCHANGCHUN 130023PEOPLES R CHINA HEILOUGJIANG UNIV DEPT CHEMHARBIN 150000PEOPLES R CHINA

Investigations of 2,4-dimethyl-1,3-pentadiene by variable temperature FTIR spectra have concluded that the compound is a mixture of two kinds of single bond isomer,i.e.,s-traiis and s-cis *** changes of IR band intensities have been recorded at research temperature *** values of △H° and △S° between two stable conformers have been deduced to be 4.37 kJ/mol and 2.48 J/mol K respectively.

关键词： Spectra Conformation 2,4-dimethyl-1,3-pentadiene

Studies on the Determination of the Micro Components by Photochemical Kinetics

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Chemical Research in Chinese Universities 1991年第4期7卷 250-254页

作者： Men Ruizhi, Zhang Qichao, Liu Shibin and Cai Wei (department of Chemistry, jilin university, changchun)Liu Zhongying (Norman Bethune university of Medical science, changchun)

The iodides can be oxidated to iodine by O;in air because of their lower redox potential. In an acidic solution, this reaction can be accelerated by ultraviolet light. Because the iodine yielded from potassium iodide by light irradiating solution can react with other oxidizer components, the iodine is constantly consumed. When it arrives the terminal points of the reaction, the iodine appears. According to the reaction time of the iodine appearing the quantities of the components are determined. And the terminal points can be pointed out by the blue of the iodine-starch or potentiometric

关键词： Iodine Photochemical kinetics Oxidation-reduction

Clinical study on pediatric Fisher's syndrome in Twenty-two cases

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白求恩医科大学学报 2001年第2期27卷 181-183页

作者： SUN Jing-hui,HAN Yan-yan,LIU Li,LU Ji-rong (department of Pediatrics, First Hospital,jilin university, changchun 130021 china)[ 吉林大学附属第一医院吉林长春 130021

目的 :进一步明确小儿 Fisher氏综合征的病因及诊断标准。方法 :对 2 2例小儿 Fisher氏综合征的临床表现、脑脊液进行对比研究。结果 :2 2例患儿均以眼肌麻痹和小脑共济失调为主征 ,伴有肢体不同程度的不完全的弛缓性瘫痪 ,约半数以上... 详细信息

目的 :进一步明确小儿 Fisher氏综合征的病因及诊断标准。方法 :对 2 2例小儿 Fisher氏综合征的临床表现、脑脊液进行对比研究。结果 :2 2例患儿均以眼肌麻痹和小脑共济失调为主征 ,伴有肢体不同程度的不完全的弛缓性瘫痪 ,约半数以上病儿脑脊液出现蛋白、细胞分离现象。结论 :Fisher氏综合征是急性感染性神经根神经炎 ( AIP)一种特殊型或变异型 ,是以小脑共济失调为主的颅神经受损的AIP。

关键词：儿童 Fisher氏综合征病因诊断标准临床表现脑脊液

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纳米Cu粉末的放电等离子烧结

材料热处理学报 2005年第2期26卷 27-30页

作者：冉旭刘勇兵闫海峰刘学然安健吉林大学材料科学与工程学院汽车材料教育部重点实验室吉林省高速公路管理局吉林长春130022

利用放电等离子烧结装置考察了纳米铜粉坯体的升温过程,研究了烧结速度和烧结温度对烧结等效电阻、烧结体相对密度及晶粒尺寸的影响。结果表明:在烧结过程中存在着最佳的烧结速度,当烧结速度为15 0℃ min时,样品致密度达到峰值88%左右,... 详细信息

利用放电等离子烧结装置考察了纳米铜粉坯体的升温过程,研究了烧结速度和烧结温度对烧结等效电阻、烧结体相对密度及晶粒尺寸的影响。结果表明:在烧结过程中存在着最佳的烧结速度,当烧结速度为15 0℃ min时,样品致密度达到峰值88%左右,晶粒的平均尺寸接近2 0 0nm ,且烧结的等效电阻随升温速度的增加而降低;纳米Cu粉末在2 5 0℃时开始烧结成块,随烧结温度提高,烧结致密度不断提高,电阻降低;但是当升温速度过快,烧结温度过高时,出现反致密化现象。

关键词：电等离子烧结纳米Cu粉烧结速度烧结温度

CRYSTALLIZATION KINETICS OF HOMOGENEOUS AND HETEROGENEOUS LLDPE

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Chinese Journal of Polymer science 2002年第4期20卷 339-345页

作者： Hong-xiang Teng Wen-hong Tang Yi Shi Xi-gao Jin State Key Laboratory of Polymer Physics and Chemistry Center for Molecular science, Institute of Chemistry Chinese Academy of sciences Beijing 100080 china department of Chemistry jilin university changchun 130023, china Chinese Acad Sci Ctr Mol Sci Inst Chem State Key Lab Polymer Phys & Chem Beijing 100080 Peoples R China jilin Univ Dept Chem Changchun 130023 Peoples R China

Based on thermal analysis, the isothermal and nonisothemal crystallization kinetics of Ziegler-Natta catalyzed linear low density polyethylene (Z-N LLDPE) and metallocene catalyzed LLDPE (m-LLDPE) were studied. Treating the results with the Avrami equation and the Ozawa equation, the crystallization constant Igk and the Avrami exponent n were obtained. Some other crystallization parameters were also discussed. According to the different characteristics of the chain structures of Z-N LLDPE and metallocene LLDPE, their crystallization behaviors were analyzed. It is indicated that the homogeneity and heterogeneity of the two polymers act in different way during the crystallization process of polymers, including the nucleation and the growth of crystals under various conditions.

关键词： crystallization kinetics homogeneity heterogeneity LLDPE

Genetic polymorphism and mRNA levels of cytochrome P450ⅡE1 and glutathione S-transferase P1 in patients with alcoholic liver disease in different nationalities

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Hepatobiliary & Pancreatic Diseases International 2009年第2期8卷 162-167页

作者： Ying Liu,Xiang-Wei Meng,Ling-Yun Zhou,Pei-Yi Zhang,Xun Sun and Ping Zhang department of Gastroenterology,First Affiliated Hospital,jilin university,changchun 130021,china department of Gastroenterology,Heilongjiang Province Hospital,Harbin 150036,china department of Medical Molecular Biology,Harbin Medical university,Harbin 150086,china department of Gastroenterology First Affiliated Hospital Jilin University Changchun 130021 China.

BACKGROUND:Alcohol abuse and dependence are major factors in the pathogenesis of alcoholic liver disease(ALD).Alcohol abuse is becoming an increasingly severe problem among the Han,Mongol,and Korean nationalities in northeast *** study aimed to investigate the relationship between ALD and the genetic polymorphism and expression levels of two enzymes,cytochrome P450ⅡE1(CYPⅡE1)and glutathione S-transferase P1(GSTP1)in patients of three ***:Peripheral blood was collected from 353 Chinese patients with ALD,300 alcohol dependent patients without liver disease(alcoholic),and 360 healthy *** group included patients from the Han,Mongol and Korean ***-time polymerase chain reaction(PCR)and PCR-restriction fragment length polymorphism(PCR-RFLP)were ***:Regardless of nationality,patients who carried the rare CYPⅡE1 C2 and GSTP1 Val alleles were at higher risk of *** frequency of C2 and Val in patients with ALD was respectively 50.00%and 26.98%in the Han,31.36%and 22.87%in the Mongol,and 45.87%and 22.02% in the Korean *** significant differences were seen in the frequency of either C2 or Val alleles in ALD patients among the three *** each nationality,the frequency of both C2 and Val alleles was significantly higher in ALD compared to alcoholic and healthy *** for nationality,the average mRNA levels of CYPⅡ E1 in ALD patients and healthy controls were 10.05%and 2.21%,*** average mRNA levels of GSTP1 in ALD patients and healthy controls were 0.53%and 2.12%,*** mRNA level of CYPⅡE1 was higher,and that of GSTP1 was lower in patients with ALD compared to the ***:Except for nationality,patients with ALD in this series tended to have a higher mRNA expression of CYPⅡE1 and to carry the C2 allele,and tended to have a lower mRNA expression of GSTP1 and to carry the Val *** is a causal relationship between the polymorphic alleles,which lea

关键词： alcoholic liver disease alcoholic genetic polymorphism mRNA expression

A Wireless Mouse Design and Implementation Based on J2ME

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A Wireless Mouse Design and Implementation Based on J2ME

Preparation and Characterization of Monodispersed Co_2O_3 Ultrafine Particle Sol

2012 National Conference on Information Technology and Computer science

作者： Yuhe Song College of Instrumentation & Electrical engineering,jilin university,changchun 130022,china Changying Liu College of Instrumentation & Electrical engineering,jilin university,changchun 130022,china Tianhao Wang State Key Laboratory of Automobile Simulation and control,jilin university,changchun 130025,china Xin Zhang College of Communication engineering,jilin university,changchun 130012,china Lingling Zheng State Key Laboratory of Automobile Simulation and control,jilin university,changchun 130022,china

J2ME is a Java technology specification which was advanced by The United States of America SUN *** was used to develop Java applications which run on small equipments,consumer electronic equipment,Internet mobile equipment,embedded ***,this paper will introduce a J2ME-Based program of wireless mouse;the program mainly uses Bluetooth technology and J2ME programming technology to achieve.

关键词： J2ME Bluetooth Wireless mouse

来源： cnki会议评论

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Chemical Research in Chinese Universities 1991年第1期7卷 62-64页

作者： Zhang Yan, Zhou Bingsuo Xiao Liangzhi (department of Chemistry, jilin university, changchun)Shi Suhua (department of Mineral Analysis and Geochemistry, changchun university of Earth sciences, changchun)Meng Zhaofu (Materials Institute, jilin university, changchun)

The present, paper contains a new composite material Co;O;UFP sol prepared by using W/O microemulsion method, and its size distribution, interracial and optical nonlincar properties are discussed. The method for the p... 详细信息

关键词： Monodisperse Composite material Ultrafine particle sol