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氟-氯磷灰石固溶体比较晶体化学FT-IR研究

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沈阳化工学院学报 2003年第2期17卷 106-109页

作者：黄志良刘羽王大伟武汉化工学院材料科学与工程系湖南武汉430073 中南大学地学与环境学院湖南长沙410083

　采用惰性气体保护下的固相反应法制备端员氟磷灰石(FAP)及氯磷灰石(ClAP)或氟氯磷灰石固溶体[F ClAP(Ca10(PO4)6(F)2.xClx)].利用FT IR对该固溶体进行比较晶体化学研究.结果表明:F ClAP中F-和Cl-的量变化使固溶体中[PO4]四面体产生... 详细信息

　采用惰性气体保护下的固相反应法制备端员氟磷灰石(FAP)及氯磷灰石(ClAP)或氟氯磷灰石固溶体[F ClAP(Ca10(PO4)6(F)2.xClx)].利用FT IR对该固溶体进行比较晶体化学研究.结果表明:F ClAP中F-和Cl-的量变化使固溶体中[PO4]四面体产生形状畸变,可用四面体畸变)来表征,当x=1时,畸变程度最大,向两端员畸变程度减弱./Lν3 1指数(DI=Lν3

关键词：氟—氮磷灰石固溶体结构比较晶体化学 FT—IR

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Analysis of the Coupling between Ecosystems and Economy in Mountainous Regions—A Case Study in Anji County of Zhejiang Province in china

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Analysis of the Coupling between Ecosystems and Economy in M...

海峡两岸三地环境与资源学术研讨会暨第二届中国环境资源与生态保育学会会员代表大会

作者： ZHANG Yunqi~(1,2. 1 School of Chemistry and Resources environment,Linyi Normal university,Linyi 2.6000,{2. 2.Research Center for Eco-environmental sciences,CAS,Beijing,100085,{2.

This paper aims to analyse the coupling between ecosystem and economy(CBEE) in mountainous regions in a spatial *** research is carried out in Anji County of Zhejiang *** sea level to the peak,according to altitude variation of every 100 m,the whole county is divided into 16 space *** of Anji County are composed of 9 types of land *** GDP and the CBEE of every type of land covers on every space unit is calculated with statistical data and results of field surveys. Subsequently,the ratio of the CBEE to the VES and the ratio of the CBEE to the GDP of every type of land cover on every space unit are worked out *** indicate that,with altitude descending,more and more VES is exploited and economy's output *** the whole county,14.34%of local VES,97% of which is the value of material productions,has been exploited into local GDP,meanwhile the VES contributes 12.12.of the GDP.

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Research on Dam Simulation System Based on OpenGL

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Research on Dam Simulation System Based on OpenGL

2.10 International Colloquium on Computing,Communication, Control, and Management (CCCM2.10)

作者： Kairong Li~(1,2.,Juanni Wang~1 Jilin Cheng~2.Kui Zuo~1 Jian Yun~1 1 College of Information Engineering,Yangzhou university,Yangzhou,china 2.College of Hydraulic {2. and Engineering,Yangzhou university,Yangzhou,china

Dam,not only has great ability to alleviate water shortages especially during the dry season and improve hydropower capacity,but also plays an imporant rule on the river *** has significant effect in improving our water environment and protecting ecological *** paper copes with the three-dimensional model of dams and discusses OpenGL modeling,lighting,material,model transformation,perspective transformation technologies to achieve visualization of the dam,and eventually we visualize the dam through concrete examples.

关键词： OpenGL Dam Modeling material Geometric Primitives Perspective Transform

Synthesis of Trifluormethyl Substituted Oxetenes by the Reaction of Acetylenedicarboxylate with Trifluoromethyl Ketone in the Presence of Triphenylphosphine

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Synthesis of Trifluormethyl Substituted Oxetenes by the Reac...

中国化学会第十二届全国氟化学会议

作者： Liang Zhang~a,Xiao-Wei Wang~b,Xin-Jin Li~b,Zhong-Wei Wang~(a,*),Shi-Zheng Zhu~(b,*) a College of material science and {2.,Shandong university of science and {2.,qingdao,Shandong 2.6590,china. b Key Laboratory of Organofluorine Chemistry,Shanghai Institute of Organic Chemistry,Chinese Academy of sciences,354 Fenglin Road, Shanghai 2.0032.china.

As part of our current studies on the development of new routes to fluorinated heterocycles,we now report a facile synthesis of trifluoromethyl substituted oxetenes(Scheme 1). It was noticed that this reaction did not take place without *** PPh was recovered after the reaction,it seems to be as a catalyst,however,when using catalytic amount of PPh(5%mol) did not isolate the product *** all these reactions,its amount should be equivalent to 2.

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Separation and Characterization of Chlorogenic Acids in Tobacco materials using Liquid Chromatography and Negtive Electrospary Ionization Tandem Mass Spectrometry

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Separation and Characterization of Chlorogenic Acids in Toba...

2.11 World Congress on Engineering and technology(CET 2.11)

作者： Shaofeng Li 1 1.Jiangsu Engineering and technology Research Center for Microbiology Resource Jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life {2. Nanjing Normal university Nanjing china Yuru Chen 1 2.2.Department of Biotechnology Taizhou College Nanjing Normal university Taizhou china Kewei Dai 3 3.School of Geography {2. Nanjing Normal university Nanjing china Shijie Yang 4 4.School of Life {2. and {12. College of Yichun Yichun china

Methods for separation of chlorogenic acid in tobacco materials *** liquid chromatography-mass spectrometry （LC-MS） method for identification and analysis of chlorogenic acids from tobacco material has been *** acid （CQA） were isolated by polyamide column chromatography and further purified by silica gel column *** revealed that polyamide is suitable for separation chlorogenic acid from tobacco *** eluant was collected for two-step column chromatography of *** content of chlorogenic acid of the purified product was 40.3%.After further purification by silica gel column chromatography,the content of total chlorogenic acids was 92.2..The LC-MS results showed that total chlorogenic acids were made up of four components: 5-CQA,3-CQA,4-CQA and *** content of 5-CQA was the most （78.2.） and other three chlorogenic acid derivatives were 1.9%,10.1% and 2.0% respectively.

关键词： tobacco chlorogenic acid polyamide separation liquid chromatography-mass spectrometry (LC-MS)

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改性木素复鞣剂的填充性能研究

天津科技大学学报 2004年第2期19卷 18-20页

作者：李桂菊王晨宋存义李书平天津科技大学材料科学与化学工程学院天津300222 北京科技大学土木与环境工程学院北京100083 山东轻工业学院轻化与环境工程二级学院山东济南250100

研究了含木素磺酸盐缩合物与铬(Ⅲ)络合制得的含多种活性基团复鞣剂RetannageLG在猪皮正面服装革复鞣应用中的最佳工艺条件和复鞣剂填充效果。确定的最佳工艺条件为复鞣温度40℃,复鞣时间2.0h,复鞣剂用量8%(占皮重)。应用结果表明,复鞣... 详细信息

研究了含木素磺酸盐缩合物与铬(Ⅲ)络合制得的含多种活性基团复鞣剂RetannageLG在猪皮正面服装革复鞣应用中的最佳工艺条件和复鞣剂填充效果。确定的最佳工艺条件为复鞣温度40℃,复鞣时间2.0h,复鞣剂用量8%(占皮重)。应用结果表明,复鞣剂Re tannageLG具有良好的选择填充性能。

关键词：木素复鞣剂应用

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H31断块东二段水淹特征及剩余油分布研究

山东科技大学学报（自然科学版） 2004年第1期23卷 108-111页

作者：谢俊张金亮山东科技大学中国海洋大学

综合评价了海外河油田H31断块东二段注水开发油藏的水淹特征和剩余油分布规律。该油藏水淹特征在平面上受沉积环境和注采系统的影响,在纵向上受油层非均质程度的控制;剩余油分布与储层沉积相带、岩性、物性、非均质性以及注采系统、井... 详细信息

综合评价了海外河油田H31断块东二段注水开发油藏的水淹特征和剩余油分布规律。该油藏水淹特征在平面上受沉积环境和注采系统的影响,在纵向上受油层非均质程度的控制;剩余油分布与储层沉积相带、岩性、物性、非均质性以及注采系统、井网完善程度和注采强度等因素有关,按剩余油饱和度和可动油饱和度等指标评价,可将剩余油的分布展现在平面上,并采取相应的调整措施,达到改善其开发效果的目的。

关键词：注水开发水淹特征剩余油平面稠油油藏

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Induced temperature-dependent DNA degradation by C60 without photoactivation

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science Bulletin 2011年第Z2期 3100-3107页

作者： WANG Chang 1,2., LIN Yan 2., WANG Ying 3 , LIANG Yong 1,3* , MENG LingZhi 4 , ZHANG Jie 2., ZHOU QunFang 1 & JIANG GuiBin 1 1 State Key Laboratory of environmental Chemistry and Ecotoxicology, Research Center for Eco-environmental {2.s, Chinese Academy of {2.s, Beijing 100085, china 2.Key Laboratory of Subtropical Agriculture and environment of the Ministry of Agriculture, Huazhong Agricultural university, Wuhan 430070, china 3 School of Medicine, Jianghan university, Wuhan 430056, china 4 Department of Chemistry, Wuhan university, Wuhan 430072. china

This study shows that C60can degrade pBR32. plasmid DNA at room temperature without photoactivation. The degradation was enhanced by increasing incubation temperature, reaction time or C60concentration. We also found that superoxide radical anions （O 2.· ） were formed in the C60solution. Superoxide dismutase significantly inhibited DNA cleavage and O 2.· generation induced by C60. These results suggest that DNA cleavage was caused by the formation of reactive oxygen species induced by C60at room temperature. Furthermore, we demonstrate that the DNA degradation was significantly inhibited by acid amide chemicals such as formamide, and by increased ionic strength of the reaction solution. These results indicate that the DNA conformation stability and the surface properties of C60are important factors regulating DNA degradation. We propose that C60can bind DNA, decrease DNA conformation stability, and induce the formation of reactive oxygen species and DNA cleavage at room temperature. Our results provide a possible explanation for the genotoxicity of C60, which should be considered in future use of this particular nano-material.

关键词： C60 DNA degradation reactive oxygen species genotoxicity

Biocatalytic synthesis of dios-genyl-β-D-glucopyranoside by use of four recombinant enzymes in one pot

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Biocatalytic synthesis of dios-genyl-β-D-glucopyranoside by...

第五届中美化学工程学术会议

作者： Oing Dong~1,Liming Ouyang~1,Huilei Yu~1,Jianhe Xu~1,Guoqiang Lin~2.1 Laboratory of Biocatalysis and Bioprocessing,State Key Laboratory of Bioreactor Engineering,East china university of {2. and technology,china 2.Institute of Organic Chemistry,CAS,china

＜正＞Diosgenin,as a typical kind of steroids,is an important industrial material for the synthesis of many steroidal saponins that have a broad market of androgenic,contraceptive, anti-inflammatory,and estrogenic drugs and so *** synthesis would provide a feasible way to obtain homogeneous saponins,but the protection and the de-protection of hydroxyl groups are ineluctable processes’2.,during which the environment would be undermined by expensive organic solvent used *** the more economic and less contaminative route is enzymatic synthesis which follows the biosynthetic pathway.

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