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Investigation on correlation between expression of CD58 molecule and severity of hepatitis B

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World Journal of Gastroenterology 2006年第26期12卷 4237-4240页

作者： Li Sheng jie Li Bao-Tai Qi Yu-qiang ji Zhao-Jun Meng Ming Xie Department of Pathogenic Microbiology and Immunology Medical School of Xi'an Jiaotong University Xi'an 710061 Shaanxi Province China

AIM： To investigate the correlation between expression of CD58 and severity of hepatitis B. METHODS： The level of soluble CD58 （sCD58） in serum of patients with hepatitis B was detected by enzymelinked immunosorbent assay. The level of expression of membrane CD58 molecule in PBMC was detected by direct immunofluorescence. The levels of serumal TBIL, DBIL, IBIL, ALT and AST were detected by the automated biochemistry analyzer as well. RESULTS： The levels of sCD58 in serum and membrane CD58 molecule in PBMC of patients with hepatitis B were significantly higher than that in normal controls （P 〈 0.05）. Level of CD58 was related to the levels of serumal TBIL, DBIL, IBIL, ALT and AST. CONCLUSION： The level of CD58 molecule （in both serum and PBMC form） of patients with hepatitis B is related to the degree of liver damage.

关键词： Hepatitis B, CD58 Liver damage

A New Species of Huaxiapterus (Pterosauria: Pterodactyloidea) from the Lower Cretaceous of Western Liaoning, China with Comments on the Systematics of Tapejarid Pterosaurs

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Acta Geologica Sinica(English Edition) 2006年第3期80卷 315-326页

作者： Lü Junchang jiN Xingsheng David M. UNWIN ZHAO Lijun AZUMA Yoichi ji qiang Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Zhejiang Museum of Natural History Hangzhou Zhejiang 310012 China Institutfür Palaiontologie Museumfiir NaturkundeZentralinstitut der Humboldt- Universitiit zu Berlin D-10115 Berlin Germany Fukui Prefectural Dinosaur Museum 51-11 Terao Muroko Katsuyama Fukui 911-8601 Japan

A new species of tapejarid pterosaur, Huaxiapterus coroUatus sp. nov. is erected on the basis of a nearly complete skull and postcranial skeleton from the Lower Cretaceous jiufotang Formation of Liaoning Province, China. Huaxiapterus coroUatus sp. nov. is characterized by a hatchet-shaped rectangular process on the premaxilla, whose short axis is perpendicular to the anterior margin of the premaxillae. Except for this process, other characters of the skull such as the breadth of the snout between the anterior margin of the nasoantorbital fenestra and the anterior margin of the premaxilla are similar to that of Huaxiapterus jii. Huaxiapterus and a second Chinese tapejarid, Sinopterus, share several unique cranial characters in common with Tapejara and these three genera appear to be more closely related to each other than to other azhdarchoids. The Chinese tapejarids （Sinopterus and Huaxiapterus） have relatively elongate skulls and weakly developed cranial crests and seem to be less derived than Tapejara, with its shorter, deeper skull and large cranial crest. Tupuxuarids （Tupuxuara and Thalassodromeus） have often been associated with tapejarids in the family Tapejaridae, but this relationship is controversial because some phylogenetic analyses have supported the pairing of tupuxuarids with Azhdarchidae. We propose that Tapejaridae be restricted to Tapejara, Sinopterus and Huaxiapterus.

关键词： Pterosauria Azhdarchoidea Tapejaridae jiufotang Formation Lower Cretaceous China

Effect of Ni Interlayer on Cavitation Erosion Resistance of NiTi Cladding by Tungsten Inert Gas(TIG)Surfacing Process

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Acta Metallurgica Sinica(English Letters) 2020年第3期33卷 415-424页

作者： Zhen-Ping Shi Zheng-Bin Wang ji-qiang Wang Yan-Xin Qiao Huai-Ning Chen Tian-Ying Xiong Yu-Gui Zheng CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

The NiTi cladding with/without Ni interlayer was prepared on stainless steel(SS) by tungsten inert gas(TIG) surfacing process,aiming at achieving good cavitation erosion *** ranking according to the cavitation erosion resistance is NiTi plate> NiTi-Ni-TIG cladding> NiTi-TIG cladding> *** better cavitation erosion resistance of NiTi-TIG and NiTi-Ni-TIG claddings than SS substrate is due to their higher micro-hardness and ***,the existence of Ni interlayer can decrease the amount of brittle intermetallic compounds,such as Fe2 Ti,and inhibit the crack generation,which results in the higher cavitation erosion resistance of NiTi-Ni-TIG compared with NiTi-TIG ***,the cavitation erosion resistance of NiTi cladding prepared by TIG surfacing process can be improved by employing Ni interlayer.

关键词： Cavitation erosion NiTi Cladding Tungsten inert gas surfacing process Ni interlayer

Dual-porosity model of rate transient analysis for horizontal well in tight gas reservoirs with consideration of threshold pressure gradient

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Journal of Hydrodynamics 2018年第5期30卷 872-881页

作者： Li-na Cao Xiao-ping Li ji-qiang Zhang Cheng Luo Xiao-hua Tan China ZhenHua Oil Co. Ltd. Beijing 100031 China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University Chengdu 610500 China CNOOC Zhanjiang Co. Ltd. Zhanjiang 524057 China Geological Exploration and Development Research Institute of CNPC Chuanqing Drilling Engineering Ltd. Chengdu 610056 China

Most researches of the threshold pressure gradient in tight gas reservoirs are experimental and mainly focus on the transient pressure response, without paying much attention to the transient rate decline. This paper establishes a dual-porosity rate transient decline model for the horizontal well with consideration of the threshold pressure gradient, which represents the non-Darcy flow in a fracture system. The solution is obtained by employing the Laplace transform and the orthogonal transform. The bi-logarithmic type curves of the dimensionless production rate and derivative are plotted by the Stehfest numerical inversion method. Seven different flow regimes are identified and the effects of the influence factors such as the threshold pressure gradient, the elastic storativity ratio, and the cross flow coefficient are discussed. The presented research could interpret the production behavior more accurately and effectively for tight gas reservoirs.

关键词： Rate transient analysis horizontal well dual-porosity threshold pressure gradient tight gas reservoirs

Correlation between ultrasonographic and pathologic diagnosis of liver fibrosis due to chronic virus hepatitis

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World Journal of Gastroenterology 2006年第8期12卷 1292-1295页

作者： Lei Shen ji- qiang Li Min-De Zeng Lun-Gen Lu Si-Tao Fan Han Bao Department of Gastroenterology Shanghai Second Medical University Renji Hospital Shanghai Institute of Digestive Disease Shanghai 200001 China

AIM： TO evaluate the validity of ultrasonographic and pathologic diagnosis of liver fibrosis in patients with chronic viral hepatitis. METHODS： The liver fibrosis status in 324 patients was evaluated by both needle biopsy and ultrasonography. Liver fibrosis was divided into SO -S4 stages. S4 stage was designated as definite cirrhosis. The ultrasonographic examination included qualitative variables, description of liver surface and parenchyma, and quantitative parameters, such as diameter of vessels, blood flow velocity and spleen size. RESULTS： Ultrasonographic qualitative description of liver surface and parenchyma was related with the severity of fibrosis. Among the quantitative ultrasonographic parameters, cut-off value of spleen length （12.1 cm） had a sensitivity of 0.600 and a specificity of 0.753 for diagnosis of liver cirrhosis. The diameters of spleen （8 mm） and portal vein （12 mm） had a diagnostic sensitivity of 0.600 and 0.767, and a diagnostic specificity of 0.781 and 0.446, respectively. The diagnostic accuracy for liver cirrhosis was moderately satisfactory, and the negative predictive values of these parameters reached near 0.95. CONCLUSION： Ultrasonography can predict the degree of liver fibrosis or cirrhosis. A single ultrasonographic parameter is limited in sensitivity and specificity for the diagnosis of early cirrhosis. The presence or absence of liver cirrhosis in patients with chronic virus hepatitis can be detected using 2 or 3 quantitative and qualitative pa- rameters, especially the length of spleen, the diameter of spleen vein and echo pattern of liver surface.

关键词： Chronic viral hepatitis Liver biopsy Ultrasonography

Superionic conductor-mediated growth of ternary ZnCdS nanorods over a wide composition range

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Nano Research 2015年第2期8卷 584-591页

作者： Yongliang Zhang jing Cai Tianpei ji qiang Wu Yuyang Xu Xizhang Wang Tao Sun Lijun Yang Zheng Hu Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical Engineering Nanjing University Nanjing210093 China

Composition regulation of semiconductors can engineer their bandgaps and hence tune their properties. Herein, we report the first synthesis of ternary ZnxCd1-xS semiconductor nanorods by superionic conductor （AgRS）-mediated growth with [（C4H9）2NCS2]2M （M = Zn, ca） as single-source precursors. The compositions of the ZnKCd1-xS nanorods are conveniently tuned over a wide range by adjusting the molar ratio of the corresponding precursors, leading to tunable bandgaps and hence the progressive evolution of the light absorption and photoluminescence spectra. The nanorods present well-distributed size and length, which are controlled by the uniform Ag2S nanoparticles and the fixed amount of the precursors. The results suggest the great potential of superionic conductor-mediated growth in composition regulation and bandgap engineering of chalcogenide nanowires/nanorods.

关键词： superionic conductor solution-solid-solid growth ternary ZnxCd1-xS bandgap engineering

Influence of particulate morphology on microstructure and tribological properties of cold sprayed A380/Al2O3 composite coatings

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Journal of Materials Science & Technology 2020年第9期44卷 9-18页

作者： Xiang Qiu Naeem ul Haq Tariq Lu Qi Jun-Rong Tang Xin-Yu Cui Hao Du ji-qiang Wang Tian-Ying Xiong Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Department of Metallurgy and Materials Engineering Pakistan Institute of Engineering and Applied SciencesNiloreIslamabadPakistan

In this study,three kinds of A380/Al2O3 composite coatings were prepared by cold spray(CS)using spherical,irregular and spherical+irregular shaped Al2O3 particulates separately mixed in the original A380 alloy *** influence of Al2O3 particulates’morphology on the microstructural characteristics(*** of Al2O3 content in coatings,coating/matrix interfacial bonding,pore size distribution and morphology etc.)and wear performance of the coatings was investigated by scanning electron microscopy(SEM),X-ray computed tomography(XCT)and 3-D optical *** indicated that the spherical Al2O3 showsobvious tamping effect during deposition *** a result,the interfaceshowedawavy shape while the matrix and particulates were mechanical interlocked with much improved *** addition,the porosity of the coating was minimized and the pores exhibited curved spherical structure with reduced *** irregular Al2O3 particles predominantly displayed the embedding effect together with fragmentation of Al2O3 ***,poor coating/matrix interfacial bonding,high porosity and the formation of angular-shaped pores were resulted in the *** sliding wear tests results revealed that the wear resistance of the coating is directly related with the retained content of Al2O3 in the *** coating containing irregular Al2O3 particulates displayed superior wear performance with its wear rate one seventh of that of the pure A380 alloy *** coating containing both kinds of Al2O3 particulates showed mixed characteristics of above two kinds of Al2O3 composite coatings.

关键词： Cold spray Al2O3 particulates X-ray computed tomography Wear test

Jurassic Tectonic Revolution in China and New Interpretation of the “Yanshan Movement”

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Acta Geologica Sinica(English Edition) 2008年第2期82卷 334-347页

作者： DONG Shuwen ZHANG Yueqiao LONG Changxing YANG Zhenyu ji qiang WANG Tao HU jianmin CHEN Xuanhua Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 Department of Earth Sciences Nanjing University Nanjing Jiangsu 210093 Institute of Geology Chinese Academyof Geological Sciences BeUing 100037

With acquisition and accumulation of new data of structural geological investigations and high-resolution isotopic dating data, we have greatly improved our understanding of the tectonic events occurring in eastern China during the period from the Late Jurassic to Early Cretaceous and may give a new interpretation of the nature, timing and geodynamic settings of the “Yanshan Movement”. During the Mid-Late Jurassic （165±5 Ma）, great readjustment of plate amalgamation kinematics took place in East Asia and the tectonic regime underwent great transformation, thus initiating a new tectonic regime in which the North China Block was the center and different plates converged toward it from the north, east and southwest and forming the “East Asia convergent” tectonic system characterized by intracontinental subduction and orogeny. As a consequence, the crustal lithosphere of the East Asian continent thickened considerably during the Late Jurassic, followed immediately by Early Cretaceous substantial lithospheric thinning and craton destruction featured by drastic lithospheric extension and widespread volcano-magmatic activities, resulting in a major biotic turnover from the Yanliao biota to Jehol Biota. Such a tremendous tectonic event that took place in the continent of China and East Asia is the basic connotation of the “Yanshan Movement”. In the paper, according to the deformation patterns, geodynamic settings and deep processes, the “Yanshan Movement” is redefined as the Late Jurassic East Asian multi-directional plate convergent tectonic regime and its associated extensive intracontinental orogeny and great tectonic change that started at -165±5 Ma. The substantial lithospheric attenuation in East China is considered the post-effect of the Yanshanian intracontinental orogeny and deformation.

关键词： Late Jurassic Yanshan Movement East Asian multi-directional convergence,intracontinental orogeny lithospheric thickening and thinning

公安长江公铁两用特大桥非通航孔钢桁梁架设技术

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桥梁建设 2017年第2期47卷 112-116页

作者：季强中铁大桥局集团第四工程有限公司江苏南京210031

公安长江公铁两用特大桥非通航孔(6~10号墩)采用4×94.5m连续钢桁梁结构,连续钢桁梁采用双片主桁结构,主桁中心距14.0m、桁高13.0m、节间距13.5m,共28个节间,主桁弦杆采用焊接整体节点,上、下弦杆在节点外采用高强度螺栓拼接。通过对钢... 详细信息

公安长江公铁两用特大桥非通航孔(6~10号墩)采用4×94.5m连续钢桁梁结构,连续钢桁梁采用双片主桁结构,主桁中心距14.0m、桁高13.0m、节间距13.5m,共28个节间,主桁弦杆采用焊接整体节点,上、下弦杆在节点外采用高强度螺栓拼接。通过对钢桁梁架设方法研究,并结合工程特点及现场情况,该桥非通航孔钢桁梁采用WD70型全回转架梁吊机散拼法安装,在10号墩后方(公安侧)设置架梁拼装支架,自10号墩向6号墩方向逐节间、逐孔架设钢桁梁。其中,9号至10号墩间钢桁梁采用膺架法拼装;8号至9号墩间钢桁梁采用半悬臂拼装架设法拼装;6~8号墩间钢桁梁采用全悬臂拼装法拼装。该桥钢桁梁于2015年9月1日完成,架设过程质量安全可控,架设后钢桁梁线形良好,满足设计要求。

关键词：公路铁路两用桥钢桁梁整体节点膺架法悬臂拼装法临时支架桥梁施工