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Rheological Behavior of Epoxy Resin Concentrated Dispersions

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Chinese Chemical Letters 1999年第10期10卷 867-870页

作者： Zhen Zhong YANG Wei Wei WANG De Lu ZHAO Mao XU (1 Institute of Chemistry. The Chinese Academy of sciences, Beijing 1000802 School of Basic medical science. capital univer.ity of medical science, Beijing 100054) Chinese Acad Sci Inst Chem Beijing 100080 Peoples R China capital Univ Med Sci Sch Basic Med Sci Beijing 100054 Peoples R China

For the concentrated dispersions of epoxy resin prepared by phase inversion emulsification technique, the effects of solid content and temperature on the rheological behavior are studied. It is found that there exists reversible structural transition in concentrated dispersions subjected to shearing. The viscosity oscillation correlated with high viscoelasticity at lower stress is remarkable in highly concentrated dispersions. There exists storage modules overshot at higher stress during the dynamic stress time ramp test. This could provide some information on dynamics of structure changes during shear action. Besides, the effects of solid content and temperature on the relationship between tangent delta and frequency are essentially different.

关键词： rheological behavior waterborne dispersion bisphenol A epoxy resin

Somatic/visceral sensory neurons in the spinal cord and synaptic/junctional activity in the spinal ganglion

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Chinese science Bulletin 1998年第1期43卷 1-7页

作者： Lv Guowei Department of Neurobiology, capital univer.ity of medical sciences, Beijing 100054, China Department of Neurobiology Capital University of Medical Sciences Beijing China

Somato_visceral interaction or acupoint_visceral interaction is an important subject that greatly concerns scholars of both Chinese traditional and Western modern medicine. The role of our newly discovered spinal projection neurons and type A or C spinal ganglion neurons in convergence and integration of somato_visceral sensation is introduced. The possible challenge brought about by these related results onto some traditional concepts in neuroscience is also discussed.

关键词： spinal projection neurons spinal ganglion neurons somato_visceral sensory convergence somato_visceral sensory integration somato_visceral interaction acupoint_visceral interaction.

Application of synchrotron source based DEI method in guinea pig cochleae imaging

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Progress in Natural science:Materials International 2007年第1期17卷 59-67页

作者： YIN Hongxia, LIU Bo, GAO Xin, GAO Xiulai and LUO Shuqian ( College of Biomedical Engineering, capital univer.ity of medical sciences, Beijing 100069, China Department of Anatomy, capital univer.ity of medical sciences, Beijing 100069, China) College of Biomedical Engineering Capital University of Medical Sciences Beijing 100069 China Department of Anatomy Capital University of Medical Sciences Beijing 100069 China

Hard X-ray diffraction enhanced imaging (DEI), which is based on a synchrotron source and monochromator-analyzer-crystal system, is an effective method for imaging X-ray phase shift. Utilizing an analyzer crystal with high angular sensitivity of micro-radian, DEI can measure the transmitted, refracted and scattered X-rays when projecting onto a sample. It dramatically improves the contrast and spatial resolution of the resultant images. At the topography station of Beijing Synchrotron Radiation Facilities (BSRF), we implemented DEI method in guinea pig cochleae imaging and acquired a series of DEI images. Based on these images, the apparent absorption and refraction images were calculated. The DEI images revealed the holistic spiral structures and inner details of guinea pig cochleae clearly, even including the structures at the cellular level, such as the static cilia of hairy cells and the limbus of Hansen cell. Due to the advantages of high contrast, high spatial resolution and distinct edge-enhanced effect, DEI method promises extensive applications in biology, medicine and clinic in the near future.

关键词： diffraction enhanced imaging hard X-ray imaging phase-contrast imaging cochlea micro-structure synchrotron source.

New fossil elaterid (Coleoptera: Polyphaga: Elateridae) from Yixian Formation of western Liaoning, China

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Progress in Natural science:Materials International 2007年第10期17卷 1244-1249页

作者： Chang Huali, Ren Dong and Shih Chungkun(College of Life science, capital Normal univer.ity, Beijing 100037, China) College of Life science Capital Normal University Beijing 100037 China

A new species of the elaterid genus Cryptocoelus Dolin and Nel, 2002 from the Late Jurassic to Early Cretaceous Yixian Formation in the western Liaoning, China is described. Diagnosis of the genus is revised, and the systematic position of the genus is briefly discussed. Because the elaterids originated in the Early to Mid-Jurassic, this new material from the Late Jurassic-Early Cretaceous will enhance our understanding of the transition between ancient elaterids and extant ones, bridge the gap of cryptic relationships between the Mesozoic cupedids and elaterids, and expand our knowledge of their evolutionary history.

关键词： Elateridae new species Yixian Formation China.

MITOSIS OF NERVE CELLS IN THE CEREBRAL CORTEX OF ADULT RATS

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science in China,Ser.B 1982年第3期25卷 286-291页

作者：徐静 Department of Histology and Embryology Chinese capital medical College

Adult rats 4--5 months old and 150--200g in body weight were used in this *** were made with antiseptic precaution by excising portions (0.7×0.4×0.1cm) of thecerebral cortices under ether anesthesia. The animals were sacrificed by decapitation at thetime intervals ranging from 1 to 30 days after the operation. Specimens of the brain wereremoved from the lesions with their adjacent normal areas, and processed for histological andhistochemical studies. Mitotic figures were observed in nerve cells adjacent to the lesions. The mitotic processof these neurons is similar to that of the other tissue cells, as it can also be divided into fourstages--prophase, metaphase, anaphase and telophase. However, neurons are entirely dif-ferent from the neuroglia and other tissue cells in that these have characteristic cell pro-cesses, i. e. axon and dendrites, while most of the neurons are pyramidal cells of layers Ⅱand Ⅴ of the cerebral cortex. The other characteristic feature is that the dividing neuroncontains Nissl bodies in the cytoplasm.

关键词： MITOSIS OF NERVE CELLS IN THE CEREBRAL CORTEX OF ADULT RATS

ERK1/2 contributes negative regulation to STAT3 activity in HSS-transfected HepG2 cells

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Cell Research 2004年第2期14卷 141-147页

作者： Ze Jun TIAN~2, Wei AN~(1,*) ~1Department of Cell Biology, capital univer.ity of medical science, 10 Xitoutiao, You An Men Beijing 100054, China. ~2Department of Cardiology, Second Hospital, Hebei medical univer.ity, Shijiazhuang, China.. 2Department of Cardiology Second Hospital Hebei Medical University Shijiazhuang China.. 1Department of Cell Biology Capital University of Medical Science 10 Xitoutiao You An Men Beijing 100054 China.

Signal transducer and activator of transcription 3 (STAT3) is a recently characterized transcription factor which is essential to liver regeneration. We have previously reported that hepatic stimulator substance (HSS), a novel growthpromoting substance, phosphorylated the epidermal growth factor (EGF) receptors and activated downstream Ras-MAP kinase (extracellular signal-regulated kinases, ERK1/2) cascade. However, whether HSS signal is related to STAT3 pathway remains unclear. The present study is aiming to explore the regulatory effect of activation of ERK1/2 evoked by HSS on STAT3 phosphorylation and STAT3 signaling. Human hepatoma cell line HepG2 was stably transfected with HSS cDNA and HSS expression was measured by Northern blot. The results showed that the transfection of HSS into HepG2 resulted in remarkable increase in cellular proliferation as compared with the non-transfected cells, and it was further proved that the cellular proliferation in the HSS-transfected cells was related to ERK1/2 a

关键词： hepatic stimulator substance ERK1/2 STAT3 hepatocyte growth.

A new fossil genus of Mesosciophilidae(Diptera,Nematocera) with two new species from the Middle Jurassic of Inner Mongolia,China

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Progress in Natural science:Materials International 2009年第12期19卷 1837-1841页

作者： Tingting Li,Dong Ren~* College of Life science,capital Normal univer.ity,Beijing 100048,China [a]College of Life science Capital Normal University Beijing 100048 China

A new genus within the family Mesosciophilidae,Jurasciophila ***.,with two new species,J,curvula *** *** *** *** ***.,are described and *** are established based on fossil specimens with bodies and complete *** of them were collected from the late Middle Jurassic Jiulongshan Formation of Daohugou in southeastern Inner Mongolia,*** with two known genera,Mesosciophilina(Kovalev,1985) and Mesosciophilopsis(Blagoderov,1994),the new genus has transitional characters. The distribution pattern of Mesosciophilidae is briefly discussed.

关键词： Mesosciophilidae Middle Jurassic Jiulongshan Formation

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DSA检查技术临床应用专家共识

中华放射学杂志 2024年第10期58卷 995-1005页

作者：中华医学会影像技术分会中国医师协会医学技师专业委员会中国医药教育协会医学影像技术学专业委员会不详华中科技大学同济医学院附属协和医院放射科武汉430022 四川大学华西医院放射科成都610041 首都医科大学附属北京同仁医院放射科北京100730 广州市第一人民医院介入医学中心哈尔滨医科大学附属肿瘤医院影像中心

本专家共识系统地叙述DSA检查前准备、手术基本操作、相关应急预案、常用应用技术、人体各个部位的DSA成像技术参数选用、图像质量控制、注意事项及必要的辐射防护等内容。重点叙述了DSA成像时, 人体各个部位正确的造影体位, 设备的成... 详细信息

本专家共识系统地叙述DSA检查前准备、手术基本操作、相关应急预案、常用应用技术、人体各个部位的DSA成像技术参数选用、图像质量控制、注意事项及必要的辐射防护等内容。重点叙述了DSA成像时, 人体各个部位正确的造影体位, 设备的成像技术参数选用, 对比剂的注射参数优选, 以及图像质量控制和注意事项。

关键词：血管造影术, 数字减影成像技术应用规范

Identifying drug-target proteins based on network features

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science China(Life sciences) 2009年第4期52卷 398-404页

作者： ZHU MingZhu1, GAO Lei1, LI Xia1,2 & LIU ZhiCheng1 1 School of Biomedical Engineering, capital medical univer.ity, Beijing 100069, China 2 College of Bioinformatics science and Technology, Harbin medical univer.ity, Harbin 150081, China 1. School of Biomedical Engineering Capital Medical University Beijing 100069 China 2. College of Bioinformatics science and Technology Harbin Medical University Harbin 150081 China

Proteins rarely function in isolation inside and outside cells, but operate as part of a highly intercon- nected cellular network called the interaction network. Therefore, the analysis of the properties of drug-target proteins in the biological network is especially helpful for understanding the mechanism of drug action in terms of informatics. At present, no detailed characterization and description of the topological features of drug-target proteins have been available in the human protein-protein interac- tion network. In this work, by mapping the drug-targets in DrugBank onto the interaction network of human proteins, five topological indices of drug-targets were analyzed and compared with those of the whole protein interactome set and the non-drug-target set. The experimental results showed that drug-target proteins have higher connectivity and quicker communication with each other in the PPI network. Based on these features, all proteins in the interaction network were ranked. The results showed that, of the top 100 proteins, 48 are covered by DrugBank; of the remaining 52 proteins, 9 are drug-target proteins covered by the TTD, Matador and other databases, while others have been dem- onstrated to be drug-target proteins in the literature.

关键词： drug-target protein-protein interaction topological features