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Chinese Chemical Letters 1995年第11期6卷 983-986页

作者： Li, JH Cheng, GJ Liu, CW Jin, JG Dong, sj Chinese Acad Sci Changchun Inst Appl Chem Electroanalyt Chem Lab Changchun 130022 Peoples R China

A novel in-situ spectroelectrochemical technique, the combination of probe beam deflection (PBD) with cyclic voltammetry (CV),was used to study the ion cxchange process of prussian blue(PB) modified film electrode in contact with various electrolyte solutions. The ion exchange mechanism was veritied as following: where on reduction PB film in contact with an acidic KCl electrolyte, it was confirmed that protons enter into the PB film before K+ cations.

关键词： DEFLECTION PROBE WITH TECHNIQUE BEAM AND

VIP immunoreactive nerves and somatostatin and serotonin containing cellsin Crohn′s disease

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World Journal of Gastroenterology 1999年第6期5卷 541-543页

作者： Lu sj Liu YQ Lin JS Wu HJ Sun YH Tan YB Weifang Med Coll Dept Pathol Weifang 261042 Peoples R China Tianjin Med Univ Dept Pathol Tianjin 300070 Peoples R China

INTRODUCTIONWith the progress of the studies on neuroendocrine and immunology in the gastrointestinal tract, it has been recognized that the intestinal neuroendocrine system and the immune system can influence and modulate each other and a neuroendocrine immunomodulation network in the intestine has been established[1]. Neuropeptides, such as vasoactive intestinal peptide (VIP), substance P (SP), somatostatin (SS) etc. are widely distributed in the gastrointestinal tract and they play an important role in the immunomodulation of the intestinal mucosa.

关键词： vasoactive intestinal peptide somatostatin serotonin Crohn′s disease immunohistochemistry histomorphometry

PREPARATION　OF　DI－GRIGNARD　REAGENTS　MEDIATED　BY　THE　TRANSITION　METAL　CHLORIDES

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Chinese Chemical Letters 1995年第4期6卷 301-304页

作者： Zhang, L Liao, sj Xu, Y Yu, DR Zhang, YP Chinese Acad Sci Dalian Inst Chem Phys Dalian 116023 Peoples R China Chinese Acad Sci Shanghai Inst Organ Chem Organomet Chem Lab Shanghai 200032 Peoples R China

In the presence of transition metal chloride and potassium iodide, di-Grignard reagents can be produced efficiently by the reactions of aryl dichlorides with active magnesium species, which are formed in situ from com... 详细信息

关键词： DI OF GRIGNARD PREPARATION CHLORIDES BY

EFFECTS OF GAS FLOW RATE ON CLARK-TYPE OXYGEN GAS SENSOR

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Chinese Chemical Letters 1995年第6期6卷 505-508页

作者： Liu, sj Shen, HX Qiu, YH Wang, H Feng, JX Nankai Univ Dept Chem Tianjin 300071 Peoples R China Nankai Univ Dept Environm Sci Tianjin 300071 Peoples R China

The flow rate sensitivity of membrane-covered oxygen gas sensor has been tested experimentally. the oxygen sensor,gas flowmeter,and air pump are arranged in six types of connective modes, the flow sensitivity of oxygen sensor is notably different. Preliminary results on the positional flow rate sensitivity of oxygen gas sensor are reported.

关键词： GAS EFFECTS OF GAS FLOW RATE ON CLARK-TYPE OXYGEN GAS SENSOR

CYCLOTRIMERIZATION OF NITRILES BY THE REACTIVE ALKALI METAL HYDRIDES

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Chinese Chemical Letters 1995年第10期6卷 839-842页

作者： Zhang, WM Zhang, L Liao, sj Xu, Y Yu, DR Chinese Acad Sci Dalian Inst Chem Phys Dalian 116023 Peoples R China Chinese Acad Sci Shanghai Inst Organ Chem Organomet Chem Lab Shanghai 200032 Peoples R China

In the presence of reactive alkali metal hydrides, nitriles can be cyclotrimerized to give 2,4,6-trisubstituted-1,3,5-triazines and 2,4,6-trisubstituted imidazoles in moderate yield.

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Carbonylation　of　Allyl　Chloride　Catalyzed　by　PdCl_2（TPPTS）_2　in　Two－phase　Medium

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Chinese Chemical Letters 1996年第9期7卷 847-848页

作者： Jiang, H Xu, Y Liao, sj Yu, DR Chen, H Li, XJ CHINESE ACAD SCI DALIAN INST CHEM PHYSDALIAN 116023PEOPLES R CHINA SICHUAN UNIV DEPT CHEMCHENGDU 610064PEOPLES R CHINA

PdCl2(TPPTS)2 exhibits very high catalytic activity for carbonylation of allyl chloride in aq. NaOH / toluene two-phase medium under atmospheric *** average turnover frequency (TOFav,mol substrate / mol Pd·min) reach... 详细信息

关键词： ATMOSPHERIC-PRESSURE CARBONYLATION SODIUM-HYDROXIDE HALIDES

Molecular cloning of differentially expressed novel rice genes induced by Magnaporthe grisea

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Chinese Science Bulletin 1997年第20期42卷 1748-1750页

作者： He, ZH Dong, HT Cheng, sj Wu, YL Dong, JX Li, DB Zhejiang Agr Univ Inst Biotechnol Hangzhou 310029 Peoples R China

WE have applied the differential display (D. D.) of mRNA method to detect and clone tran-scripts that were differentially expressed between rice NILs (Near-isogenic lines) H7R (resis-tant) and H7S (susceptible) which were induced by Magnaporthe grisea. The cDNA gene-tags obtained from D. D. analysis were reamplified by PCR and screened by Southern

关键词： rice Magnaporthe grisea molecular cloning.

Expression of cyclin-dependent kinase inhibitor genes induces apoptosis in human hepatoma cell line

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Chinese Science Bulletin 1997年第23期42卷 2000-2005页

作者： Ren, CC Tian, PK Qu, SM Teng, QS Jiang, HQ Zheng, YH Ren, sj Gu, JR Shanghai Canc Inst Natl Lab Oncogenes & Related Genes Shanghai 200032 Peoples R China

APOPTOSIS is an active, inherently programmed cell death, which has typical morphologicaland biochemical characteristics. Cell death during embryonic development, shaping of the Tand B lymphocyte and tissue dystrophy related to endocrine is designated a physiological apop-tosis by which cell numbers can be effectively controlled. As a process opposite to cell division,there is a balance between apoptosis and cell proliferation. A tumor will develop once the bal-ance is disturbed and the cell division is more rapid than the cell death. Also, apoptosis is un-der the control of multiple molecular components, while cell division is under the control of thecell cycle engine. The precise control of cell proliferation and differentiation is essential for

关键词： apoptosis cyclin-dependent kinase inhibitor hepatoma.

Variable High-Order Multiblock Overlapping Grid Methods for Mixed Steady and Unsteady Multiscale Viscous Flows,Part II:Hypersonic Nonequilibrium Flows

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Communications in Computational Physics 2013年第2期13卷 583-602页

作者： Andrea Lani Björn sjögreen H.C.Yee William D.Henshaw NASA Ames/Stanford Centre for Turbulence Research Palo AltoCAUSA Lawrence Livermore National Laboratory LivermoreCAUSA MS 258-5 NASA Ames Research CenterMoffett FieldCAUSA

The variable high-order multiblock overlapping(overset)grids method of sj¨ogreen&Yee[CiCP,Vol.5,2009]for a perfect gas has been extended to nonequilibrium *** work makes use of the recently developed high-order well-balanced shock-capturing schemes and their filter counterparts[Wang et al.,***.,2009,2010]that exactly preserve certain non-trivial steady state solutions of the chemical nonequilibrium governing *** turbulence with strong shocks and flows containing both steady and unsteady components is best treated by mixing of numerical methods and switching on the appropriate scheme in the appropriate subdomains of the flow fields,even under the multiblock grid or adaptive grid refinement *** low dissipative sixth-or higher-order shock-capturing filter methods are appropriate for unsteady turbulence with shocklets,second-and thirdorder shock-capturing methods are more effective for strong steady or nearly steady shocks in terms of *** is anticipated that our variable high-order overset grid framework capability with its highly modular design will allow for an optimum synthesis of these new algorithms in such a way that the most appropriate spatial discretizations can be tailored for each particular region of the *** this paper some of the latest developments in single block high-order filter schemes for chemical nonequilibrium flows are applied to overset grid *** numerical approach is validated on a number of test cases characterized by hypersonic conditions with strong shocks,including the reentry flow surrounding a 3D Apollo-like NASA Crew Exploration Vehicle that might contain mixed steady and unsteady components,depending on the flow conditions.

关键词： Unstructured mesh hypersonic flows thermo-chemical nonequilibrium residual distribution schemes double cone

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DIR ECT RAMBUS DRAM

电脑新时代 2000年第3期 56-57页

作者： sj