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Chemical Research in Chinese Universities 1990年第1期6卷 47-55页

作者： Wu Shihua, Yang Shujun, Huang Weiping and Wang Xukun (department of Chemistry and institute of Elemento-Organic Chemistry, Nankai University, Tianjin)

Two kinds of small iron clusters supported on SiO2-200 (dehydroxylated at 200℃ and SiO2-600 (de-hydroxylated at 600℃) were prepared by Solvated Metal Atom Impregnation (SMAI) techniques. The iron atom precursor complex, bis (toluene) iron(0) formed in the metal atom reactor, was impregnated into SiO2 having different concentrations of surface hydroxyl groups to study the effect of surface hydroxylation on the crucial stage of iron cluster formation. Catalysts prepared in this way were characterized by THM, Mosbauer and chemisorption measurements, and the resules show that higher concentration of surface hydroxyl groups of SiO2-200 favours the formation of more positively charged support iron cluster Fen/SiO2-200 and the lower concentration of surface hydroxyl groups of SiO2-600 favours the formation of basically neutral supported iron cluster Fe2/SiO2-600. The measured results also indicate that the higher concentration of surface hydroxyl groups causes the precursor complex,bis(toluene) fron(0), to decompose more rapidly, and favours the formation of relatively large iron cluster. As a consequence, these two kinds of catalysts show different catalytic properties in Fischer-Tropsch reaction. The catalytic pattern of Fe/SiO2-200 in F-T reaction is similar to that of the unreduced a-Fe2O2, while Fe2/SiO2 -600 is similar to that of reduced α-Fe2O2.

关键词： Iron clusters Solvated metal atom impregnation. Iron atom precursor complex

OIL-WATER TWO-PHASE FLOW INSIDE T-JUNCTION

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Journal of Hydrodynamics 2008年第2期20卷 147-153页

作者： WANG Li-yang WU Ying-xiang ZHENG Zhi-chu GUO Jun ZHANG Jun TANG Chi Laboratory of Applied Fluid Dynamics Department of Engineering Science Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China

The oil / water two-phase flow inside T-junctions was numerically simulated with a 3.D two-fluid model, and the turbulence was described using the mixture k- ε model. Some experiments of oil / water flow inside a single T-junction were conducted in the laboratory. The results show that the separating performance of T-junction largely depends on the inlet volumetric fraction and flow patterns. A reasonable agreement is reached between the numerical simulation and the experiments for both the oil fraction distribution and the separation efficiency.

关键词： T-junction two-phase flow liquid / liquid separation numerical simulation

Genetic analysis of five Porphyra species by isozyme markers

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Genetic analysis of five Porphyra species by isozyme markers

The crystal and molecular structure of tetrahydro-thiazole-2-thione

中国海洋湖沼学会藻类学分会第七届会员大会暨第十四次学术讨论会

作者： Shen Songdong~(1+) Xu Pu~2 Zhang Meiru~3.Yuan Zhaolan~1 Wang Jianwei~1 Zhu Jianyi~2 1.Life Sciences College,Suzhou University,Suzhou City,Jiangsu Province,china,215123.2.department of Biology and Foodstuff engineering,Changshu institute of Technology,Suzhou City,Jiangsu Province,china,215500 3.Marine Fisheries institute of Jiangsu Province,Nantong City,Jiangsu Province,china,226007

Vertical polylamide gel eletrophoresis was used to investigate isozyme polymorphisms among different isolates(including wild and cultivated)of Porphyra katadai,Porphyra oligospermatangia, Porphyra yezoensis,Porphyra haitanensis,and a hybridize species(Porphyra yezoensis×Porphyra haitanensis)sampled from ***,the analyses of probable minimum loci numbers and observed alleles sum,genetic diversity,and unweighted pair-group arithmetic average(UPGMA)cluster were carried *** initial activity and resolution testing of bands of 23.enzymes,6 of them(MDH, ME,LDH,GDH,IDH and G-6-PDH)proved to be appropriate for analysis of the full sample set The probable minimum numbers of loci and alleles analyses showed that all the five species of Porphyra had an extraordinary consistant result in ME loci and ***,*** and *** differed from other three species of Porphyra in LDH and GDH loci and alleles,while *** was independent in the analyses ofMDH,*** and *** differed from other three species in IDH analyses,while *** and *** were apart from other three species in G-6-PDH *** one with another,*** was most detached in the probable minimum numbers of loci and alleles *** results of genetic diversity analysis indicate the genetic variation between the five Porphyra species studied was limited as a genetic identity of *** hybridize species(*** x ***)seemed to be the most homologue with P. oligospermatangia as got a genetic identity of 0.893.,unexpectedly got relatively lower average genetic identities with both *** and *** 4 strains of *** were relatively more divergent with an average genetic identity of 0.7428,and *** presented most differentiated, branching from all the other species,which consistent with the result summarized in the probable minimum numbers of loci and alleles analyses.

关键词： Porphyra isozyme allele gene locus genetic variety

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Chinese Journal of Chemistry 1984年第2期2卷 105-110页

作者： XU Xiao-Jie ZHOU Gong-Du HAN Yu-Zhen institute of Physical Chemistry,Peking UniversityLI Chong-Xi department of Chemistry,Peking University institute of Physical Chemistry Peking University department of Chemistry Peking University

The crystal of tetrahydrothiazole—2-thione（TTT）belongs to monoclinic *** P2/*** are eight molecules in an unit cell with parameters a=13.844（7）,b=5.614（2）,c=13.516（7）,β=95.08（5）°,V=1046.3.（9）.The three dimensional intensity datawere obtained on a Syntex R3.four-circle diffractometer,and the number of the independent diffrac-tions amounted to *** structure was solved by direct method and refined by block-diagonal least-squares *** final R is *** crystal,the molecular structure is between 1 and 2 in which S（1）,S（2）,Nand C（1）are coplanar with *** use CNDO/2 programmes written by ourselves on Eclipse computer to compute the electronicenergies,molecular total energies,dipole moments,the charge densities and net charges of each atomof TTT and its N-benzoylated *** color of the acylated TTT and its properties for aminolysis are discussed.

关键词： The crystal and molecular structure of tetrahydro-thiazole-2-thione

GEOLOGICAL AND GEOCHEMICAL FEATURES OF THE PERMIAN SHIYINGTAN LOW SULFIDATION EPITHERMAL GOLD DEPOSIT,EASTERN TIANSHAN,NW china

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GEOLOGICAL AND GEOCHEMICAL FEATURES OF THE PERMIAN SHIYINGTA...

Functional polymorphisms of the hOGGl gene confer risk to type II epithelial ovarian cancer in Chinese

中国科学院地质与地球物理研究所2003.术年会

作者： Lianchang Zhang~1,Jinsheng Ji~2,Xingke Yang~2,Kezhang Qin~1,Cunji Xue~2, and Chengyou Feng~3.1 institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029,P.R. china 2 Geosciences department of Chang-an University,Yanta Road,Xi’an,710054,P.R.{3. 3.institute of Mineral Deposits,Chinese Academy of Geological Sciences,Baiwanzhuang Road, Beijing 10003.,P.R.{3.

The Shiyingtan gold deposit,located in a Late Paleozoic volcanic sequence along the northern margin of Tarim plate and western part of Kanggurtag metallogenic belt,was the first low-sulfidation epithermal gold deposit discovered in the eastern part of the Tianshan range,NW *** deposit is closely associated with an arcuate fracture system along the margins of a Permian *** mineralization is hosted in andesite,ignimbrites,and volcanic breccia with magmatic ages of ca.290-270 *** main orebodies,with a combined 200 000 oz Au resource,are composed of a series of steep,interconnected, crustiform-banded quartz veins,which together are as wide as 20 m and extend to depths of>200 *** gangue minerals in the ore-bearing veins consist of quartz,chalcedony,calcite,chlorite,adularia and sericite;metallic minerals mainly include pyrite,chalcopyrite,native gold,and *** temperatures and salinities of primary fluid inclusions in quartz vary from 13. to 250℃and from 0.8 to 6.7 wt%NaCl equiv.,*** and oxygen isotope data indicate that the mineralizing fluid was mainly of meteoric *** geologic and geochemical investigations confirm that the Shiyingtan gold deposit is a Late Paleozoic epithermal gold deposit of the adularia-sericite type.

关键词：

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Functional polymorphisms of the hOGGl gene confer risk to ty...

中国抗癌协会妇科肿瘤专业委员会第十一届全国学术会议

作者： Xiaoxiang Chen~(a,b,c,),Chunmei Lv~c,Surong Peng~c,Qiang Wu~c, XiaXu~c,Yaping Wang~(a,b,*) a department of Medical Genetics,Nanjing University School of Medicine,Nanjing,china b Jiangsu Key Laboratory of Molecular Medicine,Nanjing University School of Medicine, Nanjing,china c department of Gynecologic oncology,Jiangsu institute of Cancer Research, Nanjing,china d department of Pathology,The Affiliated Drum Tower Hospital,Nanjing University School of Medical,Nanjing,china e department of Chemotherapy,Jiangsu institute of Cancer Research,Nanjing,china

＜正＞Objective 8-Hydroxydeoxyguanosine（8-OHdG） is an oxidized nucleoside that can lead to misincorporation of *** 8-oxoguanine DNA glycosylase（hOGG1） is the key defense enzyme against mutation by the cellular 8-OHdG in duplex *** present study aims to explore whether the hOGGl gene variants play an important role in the carcinogenesis of epithelial ovarian cancer（EOC）.Methods Germ-line variants in 5’-UTR（c.-18G＞T,c.-23.＞G,c.-45G＞ A,and c.-53.＞C） and c.977C＞G（Ser3.6Cys） polymorphism in exon7 of the hOGGl gene in 420 sporadic EOCs and 840 controls were *** and promoter luciferase activity assays were used to explore the effect of c.-18G＞T variant on hOGGl *** In contrast to type I EOC cases,type II EOC patients were usually older,already in the advanced stage,and exhibited a common protein 53.p53. *** frequencies of genotype C.-18G/T and C.977G/G in hOGGl were significantly high in typeⅡEOC patients（OR=2.83.95% CI=1.45-5.52;OR=1.66,95%CI=1.26-2.17）,but not in type I EOC *** average level of hOGG1 protein in the normal tissues adjacent to the typeⅡEOC carried C.-18G/T was lower than that with C.-18G/G（p=0.01）.The luciferase activity in the C.-18T allele was lower than that in the C.-18G allele（p=0.001）.Conclusion The genotypes of C.-18G/T in 5’-UTR and C.977G/G in exon7 of the hOGGl gene would confer risk to typeⅡEOC.

关键词： hOGGl gene 5’ -UTR epithelial ovarian cancer single nucleotide polymorphism

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城市道路网结构的可达性评价

同济大学学报（自然科学版） 2001年第6期29卷 666-671页

作者：曾松杨佩昆方棣波深圳市城市交通规划研究中心广东深圳518031 同济大学道路与交通工程系上海200092 广州市交通规划研究所广东广州510031

在城市道路网络建设规模一定的条件下 ,道路网络的结构形式与连接情况对其效益有很大的影响 .以重新定义的可达性来作为综合评价城市道路网结构效益的指标 ,提出可达性绝对指标和相对指标的概念。

关键词：城市道路网络结构可达性绝对指标相对指标分级评价方法

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温盐环流稳定性以及年代际变率的研究进展

海洋学报 2003年第4期25卷 111-118页

作者：孙亮穆穆中国科学技术大学力学和机械工程系安徽合肥230026 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室北京100029

对近期国内外有关温盐环流的模拟研究作了综合评述,着重介绍温盐环流的稳定性、多平衡态及其转化以及年代际变率问题的研究进展。

关键词：温盐环流稳定性年代际变率多平衡态气候变化海洋气象学

Effects of Dissipations on Fluctuations in an RLC Circuit with a Source in a Thermal Bath

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Chinese Journal of Lasers 2000年第1期9卷 66-71页

作者： ZHANG Zhiming 1,2 LI Xianfeng 1 ZHOU Shikang 2 ( 1 department of Applied Physics, Shanghai Jiao Tong University, Shanghai 200240, china 2 Laser Spectroscopy Laboratory, Anhui institute of Optics and Fine Mechanics,The Chinese Academ 上海交通大学上海中科院安微光机所激光光谱学开放实验室安徽合肥

Ｓｉｎｃｅｔｈｅｌａｓｔｄｅｃａｄｅｔｈｅｍｅｓｏｓｃｏｐｉｃｐｈｙｓｉｃｓａｎｄｔｈｅｎａｎｏｅｌｅｃｔｒｏｎｉｃｓｈａｖｅｂｅｅｎｄｅｖｅｌｏｐｉｎｇｒａｐｉｄｌｙ［1，2］．Ｗｉｔｈｔｈｅｃｏｎｔｉｎｕｅｄｍｉｃ... 详细信息

Ｓｉｎｃｅｔｈｅｌａｓｔｄｅｃａｄｅｔｈｅｍｅｓｏｓｃｏｐｉｃｐｈｙｓｉｃｓａｎｄｔｈｅｎａｎｏｅｌｅｃｔｒｏｎｉｃｓｈａｖｅｂｅｅｎｄｅｖｅｌｏｐｉｎｇｒａｐｉｄｌｙ［1，2］．Ｗｉｔｈｔｈｅｃｏｎｔｉｎｕｅｄｍｉｃｒｏｍｉｎｉａｔｕｒｉｚａｔｉｏｎ...

关键词： quantum circuit dissipation fluctuation

Study on the bitter principles from Tacca plants——Structures of taccalonolides A and B

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Chinese Journal of Chemistry 1988年第3期6卷 251-256页

作者： CHEN Zhong-Liang* WANG Bao-De, Shanghai institute of Materia Medica, Academia Sinica, ShanghaiCHEN Min-Quin, department of Chemistry, Fudan University, Shanghai Shanghai institute of Materia Medica Academia Sinica Shanghai department of Chemistry Fudan University Shanghai

We isolated four steroidal bitter principles from the rhizome of Tacca plantaginea *** structures of taccalonolides A (1) and B (2) were elucidated by spectral and chemical methods, asa new type of pentacyclic steroidal γ-lactone. Taccalonolide A shows cytotoxic activity against P-3.8leukemia in cell culture and antimalarial activity to Plasmodium berghai.

关键词： Structures of taccalonolides A and B Study on the bitter principles from Tacca plants