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Search Results: 1 - 10 of 118233 matches for " WANG Hongliang "
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Application of Google Earth in Modern River Sedimentology Research  [PDF]
Xuewen Zhou, Hongliang Wang
Journal of Geoscience and Environment Protection (GEP) , 2015, DOI: 10.4236/gep.2015.38001
Abstract: Google Earth, a software based on satellite’s images and database of navigation, gains features of high resolution, integrated images, quick update, convenience, simpleness and free cost. Practice of this software shows that it plays an important role in mapping, construction and river research. Based on the fundamental features of Google Earth, this passage makes an introduction to its application in studying modern river sedimentology through the case study of the Yellow River. The results show that Google Earth satellite’s high-resolution images and image overlay functions make it easy for users to quickly navigate river, determine the type of river, track the river flows and measure the terrain slope; the software’s “Ruler” and “Add Path” functions make it easy for users to measure channel width, curvature, amplitude, wavelength, size, morphology of point-bar and other river parameters; the software’s “Historical Image” function has important significance in the study of modern river migration, sedimentary evolution and river geomorphological shape during different seasons.
Influenza A virus H5N1 entry into host cells is through clathrin-dependent endocytosis
HongLiang Wang,ChengYu Jiang
Science China Life Sciences , 2009, DOI: 10.1007/s11427-009-0061-0
Abstract: Influenza A virus H5N1 presents a major threat to human health. The entry of influenza virus into host cells is believed to be mediated by hemagglutinin (HA), a virus surface glycoprotein that can bind terminal sialic acid residues on host cell glycoproteins and glycolipids. In this study, we elucidated the pathways through which H5N1 enters human lung carcinoma cell line A549. We first proved that H5N1 can enter A549 cells via endocytosis, as lysosomotropic agents, such as bafilomycin A1 and chloroquine, can rescue H5N1-induced A549 cell death. By using specific inhibitors, and siRNAs that target the clathrin pathway, we further found that H5N1 could enter A549 cells via clathrin-mediated endocytosis, while inhibitors targeting caveolae-mediated endocytosis could not inhibit H5N1 cell entry. These findings expand our understanding of H5N1 pathogenesis and provide new information for anti-viral drug research.
Avian influenza H5N1: an update on molecular pathogenesis
HongLiang Wang,ChengYu Jiang
Science China Life Sciences , 2009, DOI: 10.1007/s11427-009-0059-7
Abstract: Avian influenza A virus constitutes a large threat to human health. Recent outbreaks of highly pathogenic avian influenza H5N1 virus in poultry and in humans have raised concerns that an influenza pandemic will occur in the near future. Transmission from avian species to humans remains sporadic, but the mortality associated with human infection is very high (about 62%). To date, there are no effective therapeutic drugs or a prophylactic vaccines available, which means that there is still a long way to go before we can eradicate or cure avian influenza. This review focuses on the molecular pathogenesis of avian influenza H5N1 virus infection. An understanding of the viral pathogenesis may facilitate the development of novel treatments or effective eradication of this fatal disease.
Sedimentary Petrology Characteristics and Their Implications for Provenance of Flowerpot Basin Jurassic System in Yanqing County, Beijing  [PDF]
Yaxuan Yuan, Hongliang Wang
Journal of Geoscience and Environment Protection (GEP) , 2016, DOI: 10.4236/gep.2016.46006
Abstract: The characteristics of sedimentary petrology are significant in determining geological provenance. By using field outcrop observation and indoor identification of thin sections, the characteristics of Jurassic system Tuchengzi Formation clastic rocks exposed in the Beijing Yanqing “flowerpot” basin, which include rock types, clastic composition and cement type, etc. have been analyzed systematically to identify the provenance direction and tectonic setting and nature of the provenance. Research shows that the sedimentary rocks in this area belong to analluvial fan and braided river sedimentary rock system and include mainly conglomerates, lithic sandstone, and feldspathic lithic sandstone. The main compositions of the conglomerate are dolomite and limestone. Nearly 50% to 70% of the sandstones are mainly polycrystalline quartz; 10% to 15% are feldspar; and 40% to 55% are composed of debris from mainly magmatic and metamorphic rocks. A Dickinson triangular diagram indicates that the provenance type in this area is recycled orogny evolving from clastic recycled orogeny such as a collisional orogenic belt to a transitional recycled orogeny. On the basis of the geographic position and tectonic setting, three types of provenance can be identified in the Jurassic system Tuchengzi Formation. The far source provenances are Archean erathem basement metamorphic rocks in the northern basin and granite or adamellite that intruded rocks of the Late Jurassic epoch of the Yanshanian period in the northeast. The nearby provenance is the Mesoproterozoic erathem Changchengian system and Jixianianian system dolomite in both the east and west.
Study on the Third-order Nonlinear Optical Properties of bis(tetraethylammonium) bis(1,3-dithiole-2-thione-4,5-dithiolato)cadium  [PDF]
Hongliang Yang, Fujun Zhang, Xinqiang Wang, Guanghui Zhang
Optics and Photonics Journal (OPJ) , 2013, DOI: 10.4236/opj.2013.32B006
Abstract:

A dmit2- salt: bis(tetraethylammonium)bis(1,3-dithiole-2-thione-4,5-dithiolato)cadium (CADMIT) was synthesized. The Optical Kerr Effect (OKE) signal of its acetonitrile solution was measured by femtosecond optical Kerr gate technique. Using CS2 OKE signal as reference signal measured under identical conditions, the third-order optical nonlinear susceptibility, c(3), of the sample solution was obtained to be about 2.98 x 10-14 esu at the concentration of 1.57 x 10-3 M. The second-order hyperpolarizability of its molecular was estimated to be as large as 1.23 x 10-32 esu. Its response time was about 195 fs, which is believed to be the contribution from the delocalized electrons.

Seasonal changes of endogenous ABA and cytokininsin environmental adaptation of differentecotypes of reed plants
Wang Hongliang,Zhang Chenglie,
Wang Hongliang
,Zhang Chenglie

环境科学学报(英文版) , 1995,
Abstract: The roots and leaves of four reed ecotypes (Phragmites communis Trinius) growing in the desertregions of northwest China were determined for the levels of abscisic acid (ABA) and cytokinins isopenteny-ladenosine (iPA) and zeatin riboside (ZR) ] using an enzyme linked immunosorbent assay (ELISA) through-out the whole of growing season. Three terrestrial reed ecotypes in drought and saline habitats contained moreABA than swamp reed during the main stages of the growing season. The ABA levels in the roots of theseterrestrial red ecotypes were higher in spring and autumn than in summer , an opposite situation was observedin their leaves. All reed ecotypes contained more iPA and ZR in the leaves than in the roots, and the decreasein iPA and ZR levels was found in both of tissues with thE passage of the season. Compared to the swamp reedecotype, three terrestrial reed ecotypes showed an increase of ABA and a decrease of cytokinins in the rootsand leaves. These results were primarily discussed in relation to the environmental adaptation of resd plants.
Influenza A virus H5N1 entry into host cells is through clathrin-dependent endocytosis

WANG HongLiang &,JIANG ChengYu,

中国科学C辑(英文版) , 2009,
Abstract: Influenza A virus H5N1 presents a major threat to human health. The entry of influenza virus into host cells is believed to be mediated by hemagglutinin (HA), a virus surface glycoprotein that can bind terminal sialic acid residues on host cell glycoproteins and glycolipids. In this study, we elucidated the pathways through which H5N1 enters human lung carcinoma cell line A549. We first proved that H5N1 can enter A549 cells via endocytosis, as lysosomotropic agents, such as bafilomycin A1 and chloroquine, can rescue H5N1-induced A549 cell death. By using specific inhibitors, and siRNAs that target the clathrin pathway, we further found that H5N1 could enter A549 cells via clathrin-mediated endocytosis, while inhibitors targeting caveolae-mediated endocytosis could not inhibit H5N1 cell entry. These findings expand our understanding of H5N1 pathogenesis and provide new information for anti-viral drug research. Supported by the National Natural Science Foundation of China (Grant No. 30623009) and National Basic Research Program of China (Grant No. 2005CB523000)
Avian influenza H5N1: an update on molecular pathogenesis

HongLiang Wang,ChengYu Jiang,

中国科学C辑(英文版) , 2009,
Abstract: Avian influenza A virus constitutes a large threat to human health. Recent outbreaks of highly pathogenic avian influenza H5N1 virus in poultry and in humans have raised concerns that an influenza pandemic will occur in the near future. Transmission from avian species to humans remains sporadic, but the mortality associated with human infection is very high (about 62%). To date, there are no effective therapeutic drugs or a prophylactic vaccines available, which means that there is still a long way to go before we can eradicate or cure avian influenza. This review focuses on the molecular pathogenesis of avian influenza H5N1 virus infection. An understanding of the viral pathogenesis may facilitate the development of novel treatments or effective eradication of this fatal disease.
An Empirical Analysis of the CNY Internationalization and Its Influencing Factors  [PDF]
Hongliang Chen
Open Journal of Business and Management (OJBM) , 2019, DOI: 10.4236/ojbm.2019.71014
Abstract:
Influenced by the development of international monetary system and the fi-nancial crisis, the promotion of CNY internationalization has gradually evolved into the dual needs of both domestic and overseas. According to the money demand function proposed by Friedman and selecting the semi-annual data from 1990 to 1998, this paper establishes the domestic monetary demand model of CNY and estimates the offshore stock of CNY from 1999 to 2015 by indirect measurement method. And we take this as a measure of CNY internationalization standards. On this basis, this paper establishes a semi-logarithmic model and makes an empirical study on the influencing factors of CNY in-ternationalization by cointegration analysis. The empirical result shows that the expansion of China’s economic scale and the current account surplus are conducive to promoting the process of CNY internationalization, but the impact of capital and financial account on the process of CNY internationaliza-tion is not significant.
1.55μm Laser Diode Monolithically Integrated with Spot-Size Converter Using Conventional Process
Hou Lianping,Wang Wei,and Zhu Hongliang
半导体学报 , 2005,
Abstract: A novel 1.55μm laser diode with spot-size converter is designed and fabricated using conventional photolithography and chemical wet etching process.For the laser diode,a ridge double-core structure is employed.For the spot-size converter,a buried ridge double-core structure is incorporated.The laterally tapered active core is designed and optically combined with the thin and wide passive core to control the size of mode.The laser diode threshold current is measured to be 40mA together with high slop efficiency of 0.35W/A.The beam divergence angles in the horizontal and vertical directions are as small as 14.89°×18.18°,respectively,resulting in low-coupling losses with a cleaved optical fiber (3dB loss).
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