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Chinese Journal of Structural Chemistry 2006年第7期25卷 878-882页

作者： LI Wei LI Chang-Hong YANG Ying-Qun CHEN Zhi-Min KUANG Dai-Zhi zhang chun-hua KANG Yun-Fei Department of Chemistry and Materials Science Hengyang Normal University Hengyang 421008 China Department of Chemical Engineering Hunan Institute of Technology Hengyang 421008 China

A one-dimensional chain cobalt（Ⅱ） coordination polymer with 2,4,6-trimethyl- benzoic acid, 4,4′-bipyridine and cobalt perchlorate anhydrous has been synthesized and characterized in the mixture solvent of water and alcohol. Crystal data for this complex： monoclinic, space group C2/c, a = 2.3805（8）, b = 1.1464（4）, c = 1.5807（5） nm, y = 128.435（4）°, V= 3.3791（18） nm^3, Dc = 1.246 g/cm^3, Z = 4, F（000） = 1340, final GooF = 1.009, R = 0.0504 and wR = 0.1287. Structural analysis shows that the cobalt ion is coordinated with two nitrogen atoms of one 4,4′- bipyridine molecule and four oxygen atoms from two 2,4,6-trimethylbenzoic acid molecules and two alcohol molecules, giving a distorted octahedral coordination geometry. The result of TG analysis indicates that the title complex is stable till 200 ℃.

关键词： cobalt(Ⅱ) complex crystal structure thermal stability analysis

Synthesis,Crystal Structure and Thermoanalysis of Complex of Zn(II) with Aminomethanesulfonic Acid-5-bromosalicylaldelyde Schiff Base

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Chinese Journal of Structural Chemistry 2006年第8期25卷 919-922页

作者： DENG Yi-Fang KUANG Dai-Zhi zhang chun-hua CHEN Man-Sheng PENG Yun-Lin YANG Ying-Qun LI Wei Department of Chemistry and Material Science Hengyang Normal University Hengyang 421008 China

The title complex [Zn（L）（phen）（CH3OH）] （L = C8H6BrO4NS, aminomethanesulfonic acid 5-bromo-salicylaldelyde schiff base; phen = 1,10-phenanthroline） has been synthesized and characterized by X-ray diffraction method. The crystal belongs to monoclinic, space group P21/c with a = 1.8712（3）, b = 1.38008（19）, c = 0.83685（12） nm, β = 97.791 （2）°, Mr = 569.72, V = 2.1411 （5） nm^3, Z= 4, Dc = 1.767 g/cm^3,μ = 3.151 mm^-1, F（000） = 1144, the final R = 0.0402 and wR = 0.0885. The central Zn（Ⅱ） is six-coordinated by one nitrogen and two oxygen atoms from the Schiff base, two nitrogen atoms from 1,10-phenanthroline and one oxygen from methanol to form a distorted octahedral coordination geometry.

关键词： zinc complex aminomethanesulfonic acid 5-bromo-salicylalddyde schiff base crystal structure thermal analysis

Effect of H_2O_2 Pretreatment on Cd Tolerance of Different Rice Cultivars

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Rice science 2011年第1期18卷 29-35页

作者： BAI Xiao-Juan Liu Li-Juan zhang chun-hua GE Ying CHENG Wang-da College of Resources and Environmental Sciences Nanjing Agricultural University Nanjing 210095 China Life Science Experimental Center Nanjing Agricultural University Nanjing 210095 China Jiaxing Academy of Agricultural Sciences Jiaxing 314016 China

The effect of H2O2 pretreatment on Cd tolerance and translocation of rice seedlings were studied using two rice cultivars （N07-6 and N07-63） differing in Cd tolerance. The contents of malondialdehyde （MDA）, reduced glutathione （GSH）, non-protein thiols （NPT）, phytochelatins （PCs） and the activity of glutathione S-transferase （GST） were compared between the two cultivars exposed to various treatments. The results showed that 50 μmol/L Cd exposure significantly inhibited rice growth, enhanced the production of GSH, NPT, PCs and MDA, and increased the activity of GST, and there were significant differences between the two cultivars. More Cd was transported into the shoot of N07-6. The H2O2 pretreatment alleviated Cd toxicity by further increasing GSH, NPT and PCs contents, as well as the GST activity in roots. The increase degrees of these parameters in N07-63 were higher than those in N07-6, suggesting that the tolerance of N07-63 was enhanced more significantly than N07-6. Hydrogen peroxide reduced Cd translocation to rice shoot but affected the Cd content in root differently. From the above results, it may be speculated that there were remarkable differences in the Cd detoxification and response to the H2O2 pretreatment between the two cultivars.

关键词： cadmium hydrogen peroxide pretreatment rice tolerance

An idiopathic hypogonadotropic hypogonadism patient with metabolic disorder and diabetes： case report

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Asian Journal of Andrology 2015年第2期17卷 341-342页

作者： Man-Na zhang Bin Su chun-hua Qian Le Bu Xiao-Yun Cheng Wen-Jun Li Shen Qu Department of Endocrinology and Metabolism Shanghai Tenth People's HospitalTongji University School of Medicine 301 Middle Yanchang RoadShanghai 200072 China.

Dear Editor, Congenital idiopathic hypogonadotropic hypogonadism （CIHH） is a rare congenital disorder characterized by delayed or absent sexual maturation and infertility associated with inappropriately low gonadotropin and sex steroid levels. We report a 34-year-old patient with CIHH accompanying with metabolic syndrome （MS） and diabetes.

关键词： @@

Distribution and development strategy for Jatropha curcas L. in Yunnan Province, Southwest China

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Forestry Studies in China 2007年第2期9卷 120-126页

作者： Li Kun Yang Wen-yun Li Li zhang chun-hua Cui Yong-zhong Sun Yong-yu Research Institute of Resource Insects Chinese Academy of Forestry Kunming 650224 E R. China College of Biological Sciences and Biotechnology Beijing Forestry University Beijing 100083 P. R. China

Yunnan Province is the main distributing area ofJatropha curcas L. This plant is abundant in several drainage areas of the dry-hot, dry-warm and sub-humid valleys in the south subtropical area of Yunnan Province. The seeds that were picked from trees blossoming between April and May and fructifying between September and October will have large seed yield and fine quality. For developing bio-diesel stock forest ofJ. curcas in areas with adaptive climate, seeding measures for afforestation should be taken and techniques on breeding, fast-growing, and high-yielding plantation cultivation are very important.

关键词： Yunnan Province Jatropha curcas L. geographical distribution resource status

Solvothermal Synthesis, Crystal Structure and Property of a Three-dimensional Fe(Ⅱ) Complex: [Fe(INAIP)(DMF)]_(n)·0.5nDMF

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Chinese Journal of Structural Chemistry 2021年第5期40卷 625-630,529页

作者： CHEN Man-Sheng DENG Yi-Fang zhang chun-hua SHENG Liang-Bing LU Wei-Hong SUN Jun-Bin Key Laboratory of Functional Organometallic Materials Hengyang Normal UniversityCollege of Chemistry and Materials ScienceHengyangHunan 421008China

A Fe-based metal-organic framework, [Fe(INAIP)(DMF)]_(n)·0.5nDMF(1), has been synthesized by the reaction of 5-(isonicotinamido)isophthalic acid(H_(2)INAIP) with FeSO_(4)·7H_(2)O under DMF reaction solvent. Single-crystal X-ray diffraction analysis indicates that complex 1 displays a two-fold interpenetrated three-dimensional(3D) framework with sra topology. The TG, magnetic and adsorption properties of the complex were also studied.

关键词： Fe complex solvothermal synthesis crystal structure adsorption

苯胺和邻氨基酚共聚的原位紫外-可见光谱电化学研究

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分析化学 2009年第3期37卷 373-377页

作者：张春花张雷上海师范大学生命与环境科学学院化学系

采用原位紫外-可见吸收光谱法研究了苯胺(AN)和邻-氨基酚(OAP)在0.5mol/LH2SO4溶液中的电化学共聚过程。结果表明,在AN和OAP的共聚过程中,OAP首先被氧化生成其阳离子自由基,对应于460nm处的吸收峰,然后OAP阳离子自由基与继而生成的AN阳... 详细信息

采用原位紫外-可见吸收光谱法研究了苯胺(AN)和邻-氨基酚(OAP)在0.5mol/LH2SO4溶液中的电化学共聚过程。结果表明,在AN和OAP的共聚过程中,OAP首先被氧化生成其阳离子自由基,对应于460nm处的吸收峰,然后OAP阳离子自由基与继而生成的AN阳离子自由基和溶液中的AN和OAP单体发生交互反应,生成混合二聚物中间体,对应于490nm处的吸收峰,此混合二聚物中间体再继续反应生成中性低聚物,对应于波长小于460nm处的吸收峰。在研究不同浓度比的AN和OAP进行电化学共聚时发现,当溶液中OAP浓度增大时,对AN的聚合会产生抑制作用。

关键词：苯胺邻-氨基酚电化学共聚原位紫外-可见光谱电化学

苯胺在邻-氨基苯磺酸功能化的玻碳电极上聚合及其对抗坏血酸的电催化氧化

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分析化学 2009年第9期37卷 1281-1285页

作者：张婧张春花张雷上海师范大学生命与环境科学学院化学系

通过电氧化法将ABS分子以CN键共价键合在玻碳电极(GCE)表面,形成ABS分子单层膜修饰的GCE(ABS/GCE),在此电极上对AN进行电聚合,从而制备了聚苯胺/邻氨基苯磺酸复合膜修饰电极(PAN-ABS/GCE/CME)。由于ABS中磺酸基功能团对PAN的掺杂作用使... 详细信息

通过电氧化法将ABS分子以CN键共价键合在玻碳电极(GCE)表面,形成ABS分子单层膜修饰的GCE(ABS/GCE),在此电极上对AN进行电聚合,从而制备了聚苯胺/邻氨基苯磺酸复合膜修饰电极(PAN-ABS/GCE/CME)。由于ABS中磺酸基功能团对PAN的掺杂作用使PAN在中性或碱性介质中都能呈现出较好的电化学活性。研究表明,PAN-ABS/GCE/CME在PBS(pH6.8)中对AA的电氧化具有催化作用,其氧化峰电位为0.17V,比在裸GCE上(0.39V)负移了0.22V,峰电流明显升高。AA在修饰电极上的氧化峰电流与其浓度在0.5～16.5mmol/L范围内呈良好的线性关系,其线性回归方程为ipa(μA)=20.2+6.20CAA,r=0.9973;检出限(3δ)为7.2μmol/L,电极具有较好的稳定性和重现性。并采用计时电流法对AA催化氧化的扩散系数和催化速率常数进行了研究。

关键词：复合膜抗坏血酸苯胺邻氨基苯磺酸化学修饰电极

环境不确定性、会计信息可比性与股权融资成本

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当代财经 2019年第12期 131-140页

作者：张春华江西财经大学会计学院

会计信息可比性高有利于报表使用者对同行业中不同企业的会计信息质量进行比较和甄别。以2007-2014年我国非金融类上市企业为研究对象,实证检验了会计信息可比性与股权融资成本的关系。研究发现:会计信息可比性与股权融资成本负相关,即... 详细信息

会计信息可比性高有利于报表使用者对同行业中不同企业的会计信息质量进行比较和甄别。以2007-2014年我国非金融类上市企业为研究对象,实证检验了会计信息可比性与股权融资成本的关系。研究发现:会计信息可比性与股权融资成本负相关,即企业的会计信息可比性越高,其股权融资成本越低;环境不确定性会削弱可比性与股权融资成本之间的负相关关系。进一步研究发现:会计信息可比性是通过股票流动性来影响公司股权融资成本的。

关键词：会计信息可比性环境不确定性股权融资成本

中国广播电视公共服务体系建设的全新语境研究

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编辑之友 2019年第8期 72-76,93页

作者：张春华南京财经大学新闻学院

制度、技术和市场是广播电视发展的三大内在驱动力,在推进广播电视公共服务体系建构的过程中,务必要对广播电视发展所处的政策语境、技术语境和社会语境有清晰的认识和理解。结合广播电视公共服务的普遍服务、优质信息、多元供给三大基... 详细信息

制度、技术和市场是广播电视发展的三大内在驱动力,在推进广播电视公共服务体系建构的过程中,务必要对广播电视发展所处的政策语境、技术语境和社会语境有清晰的认识和理解。结合广播电视公共服务的普遍服务、优质信息、多元供给三大基本目标,文章认为,当前的政策导向为广播电视公共服务体系的建设及其基本目标的实现提供了制度保障,全新的用户诉求则为广播电视公共服务的创新和提升提供了发展方向,而新传播革命一方面为普遍服务的实现提供了技术基础,另一方面则对公共服务的内容供给和传播方式提出了更高的要求。当前广播电视公共服务体系的建构应该寻求以传播内容的供给侧改革为突破口。

关键词：广播电视公共服务体系政策语境媒介生态社会语境