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Comparison Study of Two Mehods for Realizing Real-time High-efficiency JTC

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Chinese Journal of Lasers 1995年第5期B4卷 455-462页

作者： GE Baozhen QIN Yuwen ZHANG Yimo HUANG Zhanhua ZHANG Hong (institute of Contemporary Optical Instruments Engineering,tianjin University, tianjin 300072, China) tianjin Univ Tianjin China

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关键词： optical pattern recognition optical self-adaptation hybrid optical correlator

Lipschitz functions on Banach spaces which are actually on Asplund spaces

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Chinese Science Bulletin 1997年第24期42卷 2051-2054页

作者： CHENG Lixin Shi ShuzhongNankai institute of Mathematics, Nankai University, tianjin 300071, China Nankai institute of Mathematics Nankai University Tianjin China

SINCE Namioka and Phelps, starting with Asplund’s pioneering work, introduced the no-tion of Asplund spaces (those are Banach spaces on which every continuous convex function isFrechet differentiable on a dense G_δ subset) and proved that the dual of an Asplund space hasthe Radon-Nikodym property (RNP), the study of differentiability properties of functions oninfinite dimensional spaces has continued widely and deeply (see, for instance, Phelps andGiles). The research attained a great achievment after Stegall’s theorem: If the dualspace E~* has the RNP, then E is an Asplund space. Because of the N-Ph-S theorem, we

关键词： mathematics Lipschitz function Radon-Nikodym property subdifferential Banach space.

Gymnosperms on the eve of the terminal Permian mass extinction in North China and their survival strategies

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Chinese Science Bulletin 1998年第11期43卷 889-897页

作者： WANG Ziqiang+1 and ZHANG Zhiping+2, 1. tianjin institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences, tianjin 300170, China 2. tianjin Centre of Physical and Chemical Techniques, tianjin 300050, China tianjin institute of Geology and Mineral Resources Chinese Academy of Geological Sciences Tianjin China tianjin Centre of Phyhical and Chemical Techniques Tianjin China

Main characteristics of the Permian redbed gymnosperms in North China have been summarized: dominant peltasperms and conifers, numerous enigmatics such as Gigantonoclea and Psygmophyllum, and abundant precursors of Mesozoic gymnosperms. Furthermore, stresses affecting these plants survival are suggested to be paleoatmospheric CO-2 concentration, water stress, wind and fire activities, and fungal infection. Consequently, a preliminary analysis accounts for the ecological strategies of these gymnosperms to the P-Tr event.

关键词： North China Permian gymnosperms mass extinction.

Density of Ni-Cr Alloy in the Mushy State

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Journal of Materials Science & Technology 2003年第2期19卷 107-110页

作者： Feng XIAO1) Joining and Welding Research institute, Osaka University, Osaka 567-0047, Japan2) School of Materials Science and Engineering tianjin University, tianjin 300072, China Joining and Welding Res. Inst. Osaka Univ. Osaka 567-0047 Japan Sch. of Mat. Sci. and Eng. Tianjin Univ. Tianjin 300072 China

The density of Ni-Cr alloy in the mushy state has been measured using the modified sessile drop method. The density of Ni-Cr alloy in the mushy state was found to decrease with increasing temperature and Cr concentration in alloy. The molar volume of Ni-Cr alloy in the mushy state therefore increases with increasing the Cr concentration in alloy. The ratio of the difference of density divided by the temperature difference between liquidus and solidus temperatures decreases with increasing Cr concentration. The density of the alloy increased with the precipitation of a solid phase in alloy during the solidification process. The temperature dependence of the density of alloy in the mushy state was not linear but biquadratic.

关键词： Ni-Cr alloy Density Molar volume Mushy state Modified sessile drop method

SHALE-FACIES MICROFLORA FROM THE CHANGZHOUGOU FORMATION (CHANGCHENG SYSTEM) IN PANGJIABU REGION, HEBEI, CHINA

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微体古生物学报 1991年第2期 191-193页

作者： Yah Yu-zhong (tianjin institute of Geology and Mineral Resources, Chinese Academy, of Geological, Sciences, tianjin 300170)

Abundant and diverse microflora were discovered in the black shales of the Changzhougou Formation of the Changcheng System in the Pangjiabu Region of Hebei, located in the western part of the Yanshan Mountains. The microflora assemblage consists of 3 groups, 20 genera, and 75 species, including 2 new genera, 7 new species and 3 affinities. Systematic comparison of the obtained microfossils with the shale-facies

关键词： body SHALE-FACIES MICROFLORA FROM THE CHANGZHOUGOU FORMATION IN PANGJIABU REGION HEBEI CHINA length CHANGCHENG SYSTEM

Serum thymosin β4 levels in patients with hepatitis B virus-related liver failure

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World Journal of Gastroenterology 2010年第5期16卷 625-630页

作者： Tao Han,Ying Liu,Huan Liu,Zheng-Yan Zhu,Yan Li,Shi-Xiang Xiao,Zhen Guo,Zhen-Gang Zhao,Department of Hepatology,tianjin institute of Hepatobiliary Disease,tianjin Key Laboratory of Artificial Cells,tianjin Third Central Hospital,tianjin Medical University,83 Jintang Road,tianjin 300170, China Department of Hepatology Tianjin Institute of Hepatobiliary Disease Tianjin Key Laboratory of Artificial Cells Tianjin Third Central Hospital Tianjin Medical University 83 Jintang Road Tianjin 300170 China. hantaomd@***

AIM:To investigate whether serum thymosinβ4 can provide diagnostic or prognostic information in liver failure patients caused by chronic hepatitis B virus(HBV) infection. METHODS:Serum thymosinβ4 levels were measured in 30 patients with acute-on-chronic liver failure(ACLF), 31 patients with chronic liver failure(CLF),30 patients with compensated liver cirrhosis(CR)and 32 patients with chronic hepatitis B and 30 healthy *** thymosinβ4 levels were measured by enzyme-linked immunosorbent assay and Child-Pugh and model for end-stage liver disease(MELD)scores were calculated for each patient on ***:Compared with healthy controls,serum thymosinβ4 levels in ACLF,CLF,CR and chronic hepatitis B patients were significantly lower,6.5047 (4.7879-10.5314)μg/mL vs 0.4632(0.2759-0.8768) μg/mL,0.6981(0.5209-1.2008)μg/mL,1.8053 (0.8110-2.3397)μg/mL,3.7803(1.8570-6.4722)μg/mL, respectively(P<0.001).The levels of thymosinβ4 in liver failure(ACLF or CLF)patients were markedly lower than that in CR(P<0.001),and a difference was also found between CLF and ACLF patients(P=0.038).In patients with chronic liver disease,there was a positive relationship between thymosinβ4 levels and albumin, choline esterase,and platelet(P<0.001),and negative relationship with alanine aminotransferase(P=0.020), aspartate aminotransferase,total bilirubin,international normalized ratio of prothrombin time,and Child-Pugh and MELD scores(P<0.001).Of the 61 liver failure patients,the thymosinβ4 levels of non-survivors were significantly lower than that of survivors(P=0.007). Receiver operating characteristics analysis identified a thymosinβ4 cutoff level of 0.5708μg/mL for predicting poor prognosis in all liver failure *** serial thymosinβ4 values were observed in 13 liver failure *** initial values were observed in the *** greater improvement in thymosinβ4 value was found in those who recovered from the disease. CONCLUSION:Serum thymosinβ4 can be used as an

关键词： Thymosinβ4 Liver failure Serum Hepatitis B virus Biochemistry

Crystal and Molecular Structure of 1-Phenoxy(α-methyl)acetyl-2-diethylamino-3-phenyl-1,3,2-diazaphospholidin-4-one-2-sulfide

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Chinese Journal of Structural Chemistry 2000年第4期19卷 271-274页

作者： DENG Sheng Lou CHEN Ru Yu * (institute of Elemento Organic Chemistry, Nankai University, tianjin 300071) 南开大学天津 30 0 0 71

The crystal of the title compound (C 21H 26N 3O 3PS, M r =431.48) belongs to the monoclinic system space group with P2 1/n, a=13.253(3), b=7.979(2), c=21.475(4), β=97.44(3)°, V=2251.8(9) 3, Z=4, D c =1.273g/cm 3, μ =2 41cm -1, F (000)=912. The final R is 0.0624 and wR is 0.1614 for 3840 observed reflections [ I>2σ(I )]. The results of structure analysis indicate that the five membered heterocycle is coplanar. The P(1)-N(1), P(1)-N(2), P(1)-N(3) bond lengths (1.625, 1.709, 1.694 , respectively) indicate the existence of the d p π bonds between P and nitrogen atoms of the title compound. It also reveals that the configurations of two chiral centers C(31) and P(1) are S and R respectively.

关键词： phosphorus heterocycle crystal structure herbicidal activity

STUDIES　ON　THE　SYNTHESIS　AND　REACTIONWITH　ALKOXIDES　OF　3－OXO－1，2－BENZOISOTHIAZOLINE－2－ACETAMIDE1，1－DIOXIDES

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Chinese Chemical Letters 1996年第6期7卷 509-510页

作者： Guo Feng ZHAO Hua Zbeng YANG(institute of Elemento-Organic Chemistry Nankai University, tianjin, 300071) Inst. of Elemento-Organic Chemistry Nankai University Tianjin 300071

New 3 -oxo-benzoisothiazoline-2-acetamide 1, 1-dioxides (IIa-b) ware synthesizedand whose reaction with alkoxides was studied. The reaction results indicated that differentproducts were obtained owing to the different... 详细信息

关键词： OXO OF REACTIONWITH AND ON THE STUDIES ACETAMIDE1 ALKOXIDES

Effects of hyaluronic acid-chitosan-gelatin complex on the apoptosis and cell cycle of L929 cells

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Chinese Science Bulletin 2003年第17期48卷 1807-1810页

作者： MAO Jinshu, WANG Xianghui, CUI Yuanlu & YAO Kangde Research institute of Polymeric Materials, tianjin University, tianjin300072, China Research institute of Polymeric Materials Tianjin University Tianjin 300072 China

With the development in the field of tissue en-gineering, the interaction between biomaterials and cells has been deeply studied. Viewing the cells seeded on the surface of materials as an organic whole, cell cycle and apoptosis are analyzed to deepen the study of cell compatibility on bioma-terials, while cell proliferation and differentiation are stud-ied at the same time. In this paper, hyaluronic acid is incor-porated into the chitosan-gelatin system. Propidium iodide(PI) was used in cell cycle analysis and the double-staining of cells with annexin-V and PI was applied in cell apoptosisanalysis. The results show that incorporated hyaluronic acid shortens the adaptation period of cells on the material sur-face, and then cells enter the normal cell cycle quickly. Inaddition, added hyaluronic acid inhibits cell apoptosis trig-gered by the membranes. Therefore, hyaluronic acid im-proves the cell compatibility of chitosan-gelatin system andbenefits the design of biomimetic materials.

关键词： L929细胞细胞凋亡细胞周期透明质酸壳聚糖凝胶生物材料组织工程学