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95篇 您的检索式:作者名="Wang Xueming"
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1Genesis of sandstone-type uranium deposits along the northern margin of the Ordos Basin,China显示文摘Sandstone-type U mineral resources are among the important sources for nuclear energy.The U deposits in the Ordos Basin in China form part of the northern segment of the sandstone-hosted Central Asian Uranium MegaProvince.Two types of mineralizations are recognized in this basin:'phreatic permeable type'and'interlayer permeable type',both exhibiting features equivalent to roll-front subtypes.The'interlayer permeable type'is widely accepted as the dominant mineralization type for sandstone-type uranium deposits within large-scale basins,also designated as the'interlayer oxidation zone type',based on the horizontal color zoning model representing changing redox conditions.Here we synthesize data from several drill holes within the Ordos Basin,which suggest that major Mesozoic tectonic movements controlled the evolution of the sedimentary system in the basin.These tectonic movements contributed to the formation of three angular unconformities and four parallel unconformities as inferred from the stratigraphic relationships.In addition,other features such as vertical color zoning,paleo-channel controlled tabular or lentoid ore bodies(without roll-type)and a group interlayer horizontal zoning of altered minerals are also documented.Sequence stratigraphic analysis indicates that the Ordos Basin generally witnessed four cycles of water level variations during Mesozoic.During the variations,three high water level and three low water level events were recorded.Biological characteristics imply that the Ordos Basin went through multiple arid to humid climatic evolutions during Mesozoic.Combining the newly documented features with some novel concepts on the hydrodynamic mechanism for supergene ore-forming fluids,we propose a metallogenic model which invokes the importance of tectonic movements and water level fluctuations to explain the genesis of uranium deposits along the northern margin of the Ordos Basin.Ruoshi Jin Xueming Teng Xiaoguang Li Qinghong Si Wei Wang 2020Geoscience Frontiers2020,11,1:13
2Assimilating operational SST and sea ice analysis data into an operational circulation model for the coastal seas of China显示文摘The prediction of sea surface temperature(SST) is an essential task for an operational ocean circulation model. A sea surface heat flux, an initial temperature field, and boundary conditions directly affect the accuracy of a SST simulation. Here two quick and convenient data assimilation methods are employed to improve the SST simulation in the domain of the Bohai Sea, the Yellow Sea and the East China Sea(BYECS). One is based on a surface net heat flux correction, named as Qcorrection(QC), which nudges the flux correction to the model equation; the other is ensemble optimal interpolation(En OI), which optimizes the model initial field. Based on such two methods, the SST data obtained from the operational SST and sea ice analysis(OSTIA) system are assimilated into an operational circulation model for the coastal seas of China. The results of the simulated SST based on four experiments, in 2011, have been analyzed. By comparing with the OSTIA SST, the domain averaged root mean square error(RMSE) of the four experiments is 1.74, 1.16, 1.30 and 0.91°C, respectively; the improvements of assimilation experiments Exps 2, 3 and 4 are about 33.3%, 25.3%, and 47.7%, respectively.Although both two methods are effective in assimilating the SST, the En OI shows more advantages than the QC,and the best result is achieved when the two methods are combined. Comparing with the observational data from coastal buoy stations, show that assimilating the high-resolution satellite SST products can effectively improve the SST prediction skill in coastal regions.JI Qiyan ZHU Xueming WANG Hui LIU Guimei GAO Shan JI Xuanliang XU Qing 2015Acta Oceanologica Sinica2015,34,7:7
3Source apportionment of VOCs in a typical medium-sized city in North China Plain and implications on control policy显示文摘Characteristics of atmospheric VOCs(volatile organic compounds) have been extensively studied in megacities in China, however, they are scarcely investigated in medium/smallsized cities in North China Plain(NCP).A comprehensive research on possible sources of VOCs was conducted in a medium-sized city of NCP, from May to September 2019.A total of 143 canister samples of 8 sites in Xuchang city were collected, and 57 VOC species were detected.The average VOC concentrations were 42.6 ± 31.6 μg/m3, with 53.7 ± 31.0 μg/m3 and 32.1 ± 27.8 μg/m^(3), in the morning and afternoon, respectively.Alkenes and aromatics contributed 80% of the total ozone formation potential(OFP).Aromatics accounted for more than 95% of secondary organic aerosol potential(SOAP).VOCs were dominated by the local emission with significant transport from the southeast direction.PMF analysis extracted 6 sources, which were combustion(33.1%), LPG usage(19.3%), vehicular exhaust & fuel evaporation(15.8%), solvent usage(15.2%), industrial(9.11%) and biogenic(7.51%), respectively and they contributed 33.4%, 17.6%, 12.9%, 18.6%, 9.28% and 8.22% to the OFP, respectively.Combustion and LPG usage were the dominant VOC sources;and combustion, solvent usage and LPG usage were the main sources of OFP in Xuchang city, which were different to megacities in China with a high contribution from vehicular exhaust, solvent usage and industry,suggesting specific control strategies on VOCs need to be implemented in medium-sized city such as Xuchang city.Juanjuan Qin Xiaobo Wang Yanrong Yang Yuanyuan Qin Shaoxuan Shi Peihua Xu Rongzhi Chen Xueming Zhou Jihua Tan Xinming Wang 2021Journal of Environmental Sciences2021,33,9:6
4Late Paleozoic Fluid Systems and Their Ore-forming Effects in the Yuebei Basin,Northern Guangdong,China显示文摘Based on detailed and systematic researches of the geology of ore deposits, fluid inclusions and isotope geochemistry etc., and regarding the Late Paleozoic fluid system of the Yuebei Basin as an integrated object in this paper, we have revealed the temporo-spatial evolution law of the basin’s fluid system and discussed its ore-forming effects by simulating and analyzing the distribution of ore-forming elements, the fluid thermodynamics and dynamics of evolution processes of this basin. The results show that Late Paleozoic ore-forming fluid systems of the Yuebei Basin include four basic types as follows. (1) The sea floor volcanic-exhalation system developed during the rapid basin slip-extension stage in the Mid-Late Devonian, which affected the Dabaoshan region. It thus formed the Dabaoshan-type Cu-Pb-Zn-Fe sea floor volcanic-exhalation sedimentary deposits. (2) The compaction fluid system developed during the stable spreading and thermal subsidence-compression stage of the basin in the Mid-Late Devonian. The range of its effects extended all over the whole basin. It resulted in filling-metasomatic deposits, such as the Hongyan-type pyrite deposits and pyrite sheet within the Fankou-type Cu-Pb-Zn-S deposits. (3) The hot water circulation system of sea floor developed during the stage of basin uplifting and micro-aulacogen from the late Late Carboniferous to Middle Carboniferous. The range of its effects covered the Fankou region. It thus formed MVT deposits, such as the main orebody of the Fankou-type Pb-Zn-S deposits. (4) The gravity fluid system developed during the stage of fold uplifting and the basin closed from Middle Triassic to Jurassic, forming groundwater hydrothermal deposits, e.g. the veinlet Pb-Zn-calcite orebodies of the Fankou-type Pb-Zn-S deposits. Migration and concentration of the ore-forming fluids were constrained by the state of temporo-spatial distribution of its fluid potential. Growth faults not only converged the fluids and drove them to move upwards, but also the fluids often crossed the faults to the edges of the basin at the bottom of these faults and the lithologic interfaces, and even migrated to the basin’s edges from top to bottom along the faults, which may be one of the basic reasons for the stratabound deposits to cluster mainly along the contemporaneous faults on the inner border of the basin. The superposed mineralization resulting from the multi-stage activity of contemporaneous faults and ore-forming fluid systems in the basin may be one of the key factors for forming superlarge ore deposits.DENG Jun YANG Liqiang SUN Zhongshi WANG Jianping WANG Qingfei CHENG Xueming ZHOU Yinghua 2005Acta Geologica Sinica(English Edition)2005,79,5:6
5Numerical study and prediction of nuclear contaminant transport from Fukushima Daiichi nuclear power plant in the North Pacific Ocean显示文摘On March 11,2011,a large earthquake and subsequent tsunami near the east coast of Japan destroyed the Fukushima Daiichi nuclear power plant(FD-NPP),causing a massive release of nuclear contaminants.In this paper,a Pacific basin-wide physical dispersion model is developed and used to investigate the transport of nuclear contaminants.The Pacific circulation model,based on the Regional Ocean Modeling System(ROMS),is forced with air-sea flux climatology derived from COADS(the Comprehensive Ocean-Atmosphere Data Set).It is shown that ocean current dominates nuclear contaminant transport.Following the Kuroshio Extension and North Pacific Current,nuclear contaminants at the surface will move eastward in the Pacific as far as 140°W,thereafter dividing into two branches.For the south branch,nuclear contaminants will be transported westward by the equatorial current,and can reach the Philippines after 10 years' time.In contrast,the north branch will arrive at the American west coast and then migrate to the Bering Sea.At 200 m water depth,part of the nuclear materials will move southwestward along with deep ocean circulation,which could potentially reach the east coast of Taiwan.The other part will move to the west coast of America and separate into two branches.One will move northward along the west coast of Alaska,while the other will travel southward to the Hawaiian Islands.The transport of radiation contaminants below 500 m is slow,and will primarily remain in the central Pacific.The physical dispersion model results show that high concentrations of the radioactive isotope cesium-137(137 Cs) will move eastward and reach the central Pacific and west coast of North America in two and eight years,respectively.The sea areas influenced by the nuclear contaminants continue to expand,while peak concentrations decrease in the North Pacific.WANG Hui WANG ZhaoYi ZHU XueMing WANG DaKui LIU GuiMei 2012Chinese Science Bulletin2012,57,26:6
6Nb_2O_5-carbon core-shell nanocomposite as anode material for lithium ion battery显示文摘Mb2O5 -carbon nanocomposite is synthesized through a facile one-step hydrothermal reaction from sucrose as the carbon source,and studied as an anode material for high-performance lithium ion battery.The structural characterizations reveal that the nanocomposite possesses a core-shell structure with a thin layer of carbon shell homogeneously coated on the Nb2O5 nanocrystals.Such a unique structure enables the composite electrode with a long cycle life by preventing the Nb2O5 from volume change and pulverization during the charge-discharge process. In addition,the carbon shell efficiently improves the rate capability.Even at a current density of 500 mA·g-1,the composite electrode still exhibits a specific capacity of~100 mAh·g-1.These results suggest the possibility to utilize the Nb2O5-carbon core-shell composite as a high performance anode material in the practical application of lithium ion battery.Ge Li Xiaolei Wang Xueming Ma 2013Journal of Energy Chemistry2013,22,3:5
7On the localised corrosion of carbon steel induced by the in-situ local damage of porous corrosion products显示文摘The effect of in-situ local damage of uniform porous corrosion products on the localised corrosion of carbon steel is investigated using the wire beam electrode technique(WBE)combined with morphology characterisation and electrochemical tests.The WBE measurements demonstrate that the localised corrosion is enhanced by the in-situ local removal of porous corrosion products,supported by the morphology characterisation and electrochemical tests.The enhanced localised corrosion does not originate from the damaged wire in WBE where the corrosion products are removed but from the other undamaged wires,which is reported for the first time.A mechanism is proposed that the intensive anodic polarisation effect of the damaged wire on the undamaged wires could account for the enhanced localised corrosion,which is due to the protective corrosion products newly formed on the damaged surface and the increase in the potential of damaged wire.Lin Pang Zhengbin Wang Yugui Zheng Xueming Lai Xu Han 2020Journal of Materials Science & Technology2020,54,19:4
8Elucidating the various multi-phosphorylation statuses of protein functional regions by 193-nm ultraviolet photodissociation显示文摘Ultraviolet photodissociation is a high-energy fast excitation method in mass spectrometry and has been successfully applied for the elucidation of sequences and structures of biomolecules. However, its ability to distinguish the phosphorylation sites isomers of multi-phosphopeptides has been not systematically investigated until now. A 193-nm ultraviolet laser dissociation mass spectrometry system was established in this study and applied to elucidate the complex multi-phosphorylation statuses mimicking the functional regions of Sic1, Gli3 and Tau. The numbers of matched fragment ions and phosphorylation site-determining ions were improved on average 123% and 104%, respectively, by utilizing the ultraviolet photodissociation strategy, comparing to the typically utilized collision induced dissociation strategy.Finally, 94% phosphorylation sites within various statuses were unambiguously elucidated.Zheyi Liu You Jiang Chunlei Xiao Xingchuang Xiong Tao Wang Jinan Li Fangjun Wang Xiang Fang Xueming Yang 2018Chinese Chemical Letters2018,29,5:3
9Cryo-EM structure of SNAP-SNARE assembly in 20S particle显示文摘N-ethylmaleimide-sensitive 因素(NSF ) 和 α可溶的 NSF 附件蛋白质(α -SNAPs) 在一个 20S 粒子以内一起工作拆卸并且再循环 SNAP 受体(圈套) 在细胞内部的膜熔化以后复杂。由 NSF 和 α 理解 SNARE 建筑群的拆卸机制; -SNAP, 我们执行了 20S 粒子的单个粒子的 cryo 电子显微镜学分析并且决定了 α 的结构;在 7.35 Å 的分辨率的 -SNAP-SNARE 汇编部分;。结构说明那四 α脆裂声在一个 20S 粒子以内作为一个右手的圆柱的集会在单个左手的圈套螺旋状的捆附近包。连接 helices 的一个保存恐水病的补丁 9 各个和 10 α脆裂声形成耸出进 SNARE 四螺旋的捆的沟的一个楔子。生物化学的研究证明这个结构的元素为圈套复杂拆卸是批评的。我们的学习建议怎么四 α脆裂声可以与 NSF 协调把 SNARE 建筑群撕成单个蛋白质。Qiang Zhou Xuan Huang Shan Sun Xueming Li Hong-Wei Wang Sen-Fang Sui 2015Cell Research2015,25,5:2
10Development of a CLDN18.2-targeting immuno-PET probe for non-invasive imaging in gastrointestinal tumors显示文摘Claudin18.2(CLDN18.2)is a tight junction protein that is overexpressed in a variety of solid tumors such as gastrointestinal cancer and oesophageal cancer.It has been identified as a promising target and a potential biomarker to diagnose tumor,evaluate efficacy,and determine patient prognosis.TST001 is a recombinant humanized CLDN18.2 antibody that selectively binds to the extracellular loop of human Claudin18.2.In this study,we constructed a solid target radionuclide zirconium-^(89)(^(89)Zr)labled-TST001 to detect the expression of in the human stomach cancer BGC823CLDN18.2 cell lines.The[^(89)Zr]Zr-desferrioxamine(DFO)-TST001 showed high radiochemical purity(RCP,>99%)and specific activity(24.15±1.34 GBq/mmol),and was stable in 5%human serum albumin,and phosphate buffer saline(>85%RCP at 96 h).The EC_(50) values of TST001 and DFO-TST001 were as high as 0.413±0.055 and 0.361±0.058 nM(P>0.05),respectively.The radiotracer had a significantly higher average standard uptake values in CLDN18.2-positive tumors than in CLDN18.2-negative tumors(1.11±0.02 vs.0.49±0.03,P=0.0016)2 days post injection(p.i.).BGC823CLDN18.2 mice models showed high tumor/muscle ratios 96 h p.i.with[^(89)Zr]Zr-DFO-TST001 was much higher than those of the other imaging groups.Immunohistochemistry results showed that BGC823CLDN18.2 tumors were highly positive(+++)for CLDN18.2,while those in the BGC823 group did not express CLDN18.2().The results of ex vivo biodistribution studies showed that there was a higher distribution in the BGC823CLDN18.2 tumor bearing mice(2.05±0.16%ID/g)than BGC823 mice(0.69±0.02%ID/g)and blocking group(0.72±0.02%ID/g).A dosimetry estimation study showed that the effective dose of[^(89)Zr]Zr-DFO-TST001 was 0.0705 mSv/MBq,which is within the range of acceptable doses for nuclear medicine research.Taken together,these results suggest that Good Manufacturing Practices produced by this immuno-positron emission tomography probe can detect CLDN18.2-overexpressing tumors.Yan Chen Xingguo Hou Dapeng Li Jin Ding Jiayue Liu Zilei Wang Fei Teng Hongjun Li Fan Zhang Yi Gu Steven Yu Xueming Qian Zhi Yang Hua Zhu 2023Journal of Pharmaceutical Analysis2023,13,4:2
11Manipulation of light in MIM plasmonic waveguide systems显示文摘Plasmonic waveguides that allow deeply subwavelength confinement of light provide an effective platform for the design of ultracompact photonic devices.As an important plasmonic waveguide,metal-insulator-metal(MIM)structure supports the propagation of light in the nanoscale regime at the visible and near-infrared ranges.Here,we focus on our work in MIM plasmonic waveguide devices for manipulating light,and review some of the recent development of this topic.We introduce MIM plasmonic wavelength filtering and demultiplexing devices,and present the electromagnetic induced transparency(EIT)-like and Fano resonance effects in MIM waveguide systems.The slow-light and rainbow trapping effects are demonstrated theoretically.These results pave a way toward dynamic control of the special and useful optical responses,which actualize some new plasmonic waveguide-integrated devices such as nanoscale filters,demultiplexers,sensors,slow light waveguides,and buffers.LU Hua WANG GuoXi LIU XueMing 2013Chinese Science Bulletin2013,58,30:2
12Collection System of Soil Moisture Information Based on ZigBee and GPRS显示文摘Real-time monitoring and wireless transmission of farmland soil moisture have been paid with more and more attention in the research of agricultural drought monitoring, early warning and prevention and control technology. The hardware design and software design of soil moisture monitoring in farmland were carried out, and a monitoring system based on the principles of ZigBee and GPRS technologies was developed and applied to the actual monitoring of soil moisture in farmland. This study provides a good idea to promote real-time monitoring, wireless transmission and intelligent management of soil moisture in farmland.Haihong LIU hao JIA Yanhe LIU Qian'ao ZHAO Haoyu WANG Xueming DUAN Zhaoxin ZHANG Jianjie BI 2019Agricultural Biotechnology2019,8,6:2
13Origin and circulation of saline springs in the Kuqa Basin of the Tarim Basin,Northwest China显示文摘It is widely accepted that hydrogeochemistry of saline springs is extremely important to understand the water circulation and evolution of saline basins and to evaluate the potential of potassium-rich evaporites.The Kuqa Basin,located in the northern part of the Tarim Basin in Northwest China,is a saline basin regarded as the most potential potash-seeking area.However,the origin and water circulation processes of saline springs have yet to be fully characterized in this saline basin.In this study,a total of 30 saline spring samples and 11 river water samples were collected from the Qiulitage Structural Belt(QSB)of the Kuqa Basin.They were analyzed for major(K^+,Ca2^+,Na^+,Mg2^+,SO42-,Cl-and HCO3-)and trace(Sr2^+and Br-)ion concentrations,stable H-O-Sr isotopes and tritium concentrations in combination with previously published hydrogeochemical and isotopic(H-O)data in the same area.It is found that the water chemical type of saline springs in the study area belonged to the Na-Cl type,and that of river water belonged to the Ca-Mg-HCO3-SO4 type.The total dissolved solid(TDS)of saline springs in the QSB ranged from 117.77 to 314.92 g/L,reaching the brine level.On the basis of the general chemical compositions and the characteristics of the stable H-O-Sr isotopes of saline springs,we infer that those saline springs mainly originated from precipitation following river water recharging.In addition,we found that saline springs were not formed by evapo-concentration because it is unlikely that the high chloride concentration of saline springs resulted in evapo-concentration and high salinity.Therefore,we conclude that saline spring water may have experienced intense evapo-concentration before dissolving the salty minerals or after returning to the surface.The results show that the origin of salinity was mainly dominated by dissolving salty minerals due to the river water and/or precipitation that passed through the halite-rich stratum.Moreover,there are two possible origins of saline springs in the QSB:one is the infiltration of the meteoric water(river water),which then circulates deep into the earth,wherein it dissolves salty minerals,travels along the fault and returns to the surface;another is the mixture of formation water,or the mixture of seawater or marine evaporate sources and its subsequent discharge to the surface under fault conditions.Our findings provide new insight into the possible saltwater circulation and evolution of saline basins in the Tarim Basin.SHAN Junjie WANG Jianping SHAN Fashou TENG Xueming FAN Qishun LIQingkuan QIN Zhanjie ZHANG Xiangru 2020Journal of Arid Land2020,12,2:2
14In-situ generation and global property profiling of metal nanoclusters by ultraviolet laser dissociation-mass spectrometry显示文摘Metal nanoclusters are promising nanomaterials with unique properties, but only a few ones with specific numbers of metal atoms can be obtained and studied up to now. In this study, we establish a new paradigm of in-situ generation and global study of metal nanoclusters with different sizes, constitutions, and charge states, including both accurate constitution characterization and global activity profiling. The complex mixtures of metal nanoclusters are produced by employing single-pulsed 193-nm laser dissociation of monolayer-protected cluster(MPC) precursors within a high-resolution mass spectrometry(HRMS). More than400 types of bare gold nanoclusters including novel multiply charged(2+ and 3+), S-/P-doped, and silver alloy ones can be efficiently generated and accurately characterized. A distinct size(1 to 142 atoms)-and charge(1+ to 3+)-hierarchy reactivity is clearly observed for the first time. This global cluster study might greatly promote the developments and applications of novel metal nanoclusters.Zheyi Liu Zhaoxian Qin Chaonan Cui Zhixun Luo Bing Yang You Jiang Can Lai Zhipeng Wang Xiaolei Wang Xiang Fang Gao Li Fangjun Wang Chunlei Xiao Xueming Yang 2022Science China Chemistry2022,65,6:2
15Silencing myostatin gene by RNAi in sheep embryos显示文摘Dayun Tang Huabin Zhu Jianmin Wu Hanzhong Chen Yan Zhang Xueming Zhao Xiaoliang Chen Weihua Du Dong Wang Xiukun Lin 2012Journal of Biotechnology2012,,3:2
16Self-assembled FeS-based cascade bioreactor with enhanced tumor penetration and synergistic treatments to trigger robust cancer immunotherapy显示文摘Major challenges for cancer treatment are how to effectively eliminate primary tumor and sufficiently induce immunogenic cell death(ICD)to provoke a robust immune response for metastasis control.Here,a self-assembled cascade bioreactor was developed to improve cancer treatment with enhanced tumor penetration and synergistic therapy of starvation,chemodynamic(CDT)and photothermal therapy.Ultrasmall Fe S-GOx nanodots were synthesized with glucose oxidase(GOx)as template and induced by paclitaxel(PTX)to form self-assembling Fe S-GOx@PTX(FGP)via hydrophobic interaction.After accumulated at tumor sites,FGP disassembles to smaller Fe S-GOx for enhanced deep tumor penetration.GOx maintains high enzymatic activity to catalyze glucose with assistant of oxygen to generate hydrogen peroxide(H2O2)as starvation therapy.Fenton reaction involving the regenerated H_(2)O_(2) in turn produced more hydroxyl radicals for enhanced CDT.Following near-infrared laser at 808 nm,FGPs displayed pronounced tumor inhibition in vitro and in vivo by the combination therapy.The consequent increased exposure to calreticulin amplified ICD and promoted dendritic cells maturation.In combination with anti-CTLA4 checkpoint blockade,FGP can absolutely eliminate primary tumor and avidly inhibit distant tumors due to the enhanced intratumoral infiltration of cytotoxic T lymphocytes.Our work presents a promising strategy for primary tumor and metastasis inhibition.Hao Ren Jiahui Yong Qingqing Yang Zhen Yang Zhangya Liu Yan Xu Hao Wang Xing Jiang Wenjun Miao Xueming Li 2021Acta Pharmaceutica Sinica B2021,11,10:2
17Extra- renal nephroblastomatosis in children: a report of two cases显示文摘YI WU XUEMING ZHU XINGDONG WANG et aI 2014BMC Pediatrics2014,14,:1
18Physieochemical alterations of wheat gluten proteins upon dough formation and frozen storage-A review from gluten, glutenin and gliadin perspectives显示文摘WANG Pei JIN Zhengyu XU Xueming 2015Trends in Food Science & Technology2015,46,2:1
19In vitro srudy on the cloning and transduction of human O6-methylguanine-DNA methylt ransferase cDNA into human umbilical cord blood CD34+cells显示文摘Jishi Wang Zixing Chen Xueming Xia 2000Chinese Journa l of Cancer Research2000,,12:1
20Improvement of combina tion chemotherapy tolerance by introduction of polycistronic retroviral vector d rug resistance genes MGMT and MDR1 into human umbilical cord blood CD34+ cells 显示文摘Jishi Wang Zixing Chen Xueming Xia 2002Leukemia Research2002,26,:1
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