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Journal of Magnesium and Alloys 2024年第1期12卷 225-236页

作者： Shuo wang Daokui Xu dongliang wang Zhiqiang Zhang Baojie wang Key Lab of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang110819China Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Engineering Research Center of Advanced Materials Preparing Technology Ministry of EducationNortheastern UniversityShenyang110819China School of Environmental and Chemical Engineering Shenyang Ligong UniversityShenyang110159China Binzhou Institute of Technology BinzhouShandong Province256606China Shandong Key Laboratory of Advanced Aluminium Materials and Technology BinzhouShandong Province256606China

Through exploring the stress corrosion cracking(SCC)behaviors of the as-cast Mg-8%Li and Mg-8%Li-6%Zn-1.2%Y alloys in a 0.1 M NaCl solution,it revealed that the SCC susceptibility index(I_(SCC))of the Mg-8%Li alloy was 47%,whilst the I_(SCC)of the Mg-8%Li-6%Zn-1.2%Y alloy was 68%.Surface,cross-sectional and fractography observations indicated that for the Mg-8%Li alloy,theα-Mg/β-Li interfaces acted as the preferential crack initiation sites and propagation paths during the SCC *** regard to the Mg-8%Li-6%Zn-1.2%Y alloy,the crack initiation sites included the I-phase and the interfaces of I-phase/β-Li andα-Mg/β-Li,and the preferential propagation paths were the I-phase/β-Li andα-Mg/β-Li ***,the SCC of the two alloys was concerned with hydrogen embrittlement(HE)mechanism.

关键词： Magnesium-lithium alloy Stress corrosion cracking I-phase Fracture analysis

Migration capacity of human umbilical cord mesenchymal stem cells towards glioma in vivo

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Neural Regeneration Research 2013年第22期8卷 2093-2102页

作者： Cungang Fan dongliang wang Qingjun Zhang Jingru Zhou Department of Neurosurgery Peking University People's Hospital

High-grade glioma is the most common malignant primary brain tumor in adults. The poor prognosis of glioma, combined with a resistance tQ currently available treatments, necessitates the develop- ment of more effective tumor-selective therapies. Stem cell-based therapies are emerging as novel cell-based delivery vehicle for therapeutic agents. In the present study, we successfully isolated human umbilical cord mesenchymal stem cells by expiant culture. The human umbilical cord mes- enchymal stem cells were adherent to plastic surfaces, expressed specific surface phenotypes of mesenchymal stem cells as demonstrated by flow cytometry, and possessed multi-differentiation potentials in permissive induction media in vitro. Furthermore, human umbilical cord mesenchymal stem cells demonstrated excellent glioma-specific targeting capacity in established rat glioma models after intratumoral injection or contralateral ventricular administration in vivo. The excellent glioma-specific targeting ability and extensive intratumoral distribution of human umbilical cord mesenchymal stem cells indicate that they may serve as a novel cellular vehicle for delivering therapeutic molecules in glioma therapy.

关键词： neural regeneration umbilical cord mesenchymal stem cell glioma migration cell-based therapy grants-supported paper neuroregeneration

Effect of cross rolling on the microstructure and mechanical performance of a dual-phase structured Mg-8Li-6Zn-1Y(in wt.%)alloy

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Journal of Materials Science & Technology 2024年第9期176卷 132-144页

作者： dongliang wang Daokui Xu Baojie wang Changjian Yan Shuo wang Xiangbo Xu Lan Zhang Cuilan Lu 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 Binzhou Institute of Technology Binzhou 256606China Shandong Key Laboratory of Advanced Aluminium Materials and Technology Binzhou 256606China School of Environmental and Chemical Engineering Shenyang Ligong UniversityShenyang 110159China Institute of Corrosion Science and Technology Guangzhou 510070China Key Lab of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China

The microstructure and mechanical performance of the unidirectionally and cross-directionally rolled Mg-8Li-6Zn-1Y(in wt.%)sheets have been investigated and *** reveals that after the unidirectional rolling(UR),the broken I-phase particles are aggregated at theα-Mg/β-Li phase ***,the cross-rolling(CR)process can not only severely break the bulk I-phase,but also cause the obviously uniform distribution of I-phase particles in the matrix ***,the average grain size of the CR samples is 3.61μm and about 50%that of the UR *** maximum texture intensities ofα-Mg andβ-Li phases in the CR samples are slightly stronger than those in the UR *** results demonstrate that the CR process can effectively enhance the tensile properties and remarkably reduce the mechanical anisotropy of the *** the UR samples,the yield strength,ultimate tensile strength,and elongation ratio along the rolling direction(RD)are 164 MPa,198 MPa,and 16.4%,whereas those along the transverse direction(TD)are 157 MPa,185 MPa,and 22.0%,*** the CR samples,their mechanical properties are basically the same and the mechanical anisotropy is almost *** yield strength,ultimate tensile strength,and elongation ratio along the cross-rolling direction 1(CRD1)and 2(CRD2)are respectively measured to be 181 MPa and 182 MPa,220 MPa and 218 MPa,20.6%and 20.7%.Failure analysis indicates that for the UR samples being tensile tested along the RD and TD,microcracks are preferentially initiated in the region of aggregated I-phase *** the CR samples being tensile tested along both two cross-rolling directions,the initiation of micro-cracks mainly occurs at the I-phase/matrix phase interfaces and in the interior of matrix phases.

关键词： Magnesium-lithium alloy Cross-rolling I-phase Microstructure Mechanical performance

Impacts of TRMM SRR assimilation on the numerical prediction of tropical cyclone

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Acta Oceanologica Sinica 2006年第5期25卷 14-26页

作者： MA Leiming QIN Zenghao DUAN Yihong LIANG Xudong wang dongliang Laboratory of Typhoon Forecast Technique/China Meteorological Administration Shanghai Typhoon Institute Shanghai200030 China Department of Atmospheric Sciences Nanjing University Nanjing 210093 China

Impacts of the four-dimensional variation （4DVAR） assimilation of Tropical Rainfall Measuring Mission （TRMM）/TMI surface rainfall rate （SRR） on the initialization and simulation of TC Danas in 2001 are studied. A number of sensitivity experiments are designed to evaluate the performance of assimilation during the particular stage when Danas developed from a tropical depression towards a typhoon, as well as an abrupt turning. Under the dynamic and thermodynamic constraints of meso-scale model and the 4DVAR, the TRMM SRR data are directly assimilated in high horizontal resolution （ 18 kin）. On the basis of the adjustment of initial model field, 4DVAR of TRMM SRR considerably improved the depiction of TC＇ s structure and rainfall. The same explanation can also be given to the enhancement of simulation on TC＇ s intensity and track. In comparison with the popular idea of twice steps of SRR assimilation, namely, 4DVAR pins 1DVAR, the retrieval error is expected to be avoided in the procedure of direct 4DVAR. In addition, the TRMM SRR 4DVAR within a high-resolution model can take into account as much information as observed and is expected to be performed in operational use if the observed rainfall data are routinely available.

关键词： TRMM TC Danas 4DVAR rainfall numerical simulation

Treatment of coking wastewater using oxic-anoxic-oxic process followed by coagulation and ozonation

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Carbon Resources Conversion 2019年第2期2卷 151-156页

作者： Jianbing wang Yuxian Ji Fengyuan Zhang dongliang wang Xuwen He Chunrong wang School of Chemical and Environmental Engineering China University of Mining and Technology-BeijingBeijing 100083China

An oxic-anoxic-oxic(O-A-O)system followed by coagulation and ozonation processes was used to study the treatment of coking *** the O-A-O process,the removals of NH4+-N,total nitrogen and COD were 91.5-93.3%,91.3-92.6%and 89.1-93.8%,respectively when employing hydraulic residence times of 60 h for the biochemical *** removal of NH4+-N was obtained due to the placement of an aerobic tank in front of A-O system which can mitigate the inhibitory effect of toxic compounds in coking wastewater on nitrifying *** of methanol into the anoxic reactor greatly increased the removal of total nitrogen,indicating that denitrifiers can hardly use organic compounds in coking wastewater as carbon source for *** values of the effluent from the O-A-O system were still higher than 260 mg/L even with a prolonged time of 160 h mainly due to the high refractory properties of residual compounds in the *** subsequent coagulation and ozonation processes resulted in the COD removal of 91.5%-93.3%and reduced the relative abundance of large molecular weight(MW)organics(>1 kDa)from 55.8%to 20.93%with the ozone,PAC and PAM dosages of 100,150 and 4 mg/L *** these conditions,the COD value and concentration of polycyclic aromatic hydrocarbons in the final effluent were less than 80 and 0.05 mg/L,respectively,which meet the requirement of the Chinese emission *** results indicate that the combined technology of O-A-O process,coagulation and ozonation is a reliable way for the treatment of coking wastewater.

关键词： Coking wastewater Activated sludge process Coagulation Ozonation Nitrification-denitrification

Heat treatment effects on the superconducting properties of Ag-doped SrKFeAs compounds

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Science China(Physics,Mechanics & Astronomy) 2010年第7期53卷 1187-1193页

作者： ZHANG ZhiYu wang Lei QI YanPeng GAO ZhaoShun wang dongliang ZHANG XianPing MA YanWei Key Laboratory of Applied Superconductivity Institute of Electrical EngineeringChinese Academy of SciencesBeijing 100190China

The superconducting properties of polycrystalline Sr0.6K0.4Fe2As2 were strongly influenced by Ag doping(***.23(2010) 025027).Ag addition is mainly dominated by silver diffusing,so the annealing process is one of the essential factors to achieve high quality Ag doped *** this paper,the optimal annealing conditions were studied for Ag doped Sr0.6K0.4Fe2As2 bulks prepared by a one-step solid reaction *** is found that the annealing temperature has a strong influence on the superconducting properties,especially on the critical current density *** a result,higher heat treatment temperature(~900℃) is helpful in diffusing Ag and reducing the impurity phase gathered together to improve the grain *** contrast,low-temperature sintering is counterproductive for Ag doped *** results clearly suggest that annealing at ~900℃ is necessary for obtaining high Jc Ag-doped samples.

关键词： Ag doped Sr0.6K0.4Fe2As2 iron-based superconductor heat treatment

Fabrication of the 19-filament Fe/Cu clad MgB_2 wire via in situ powder-in-tube method

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Chinese Science Bulletin 2007年第19期52卷 2621-2625页

作者： YU ZhengGuang MA YanWei wang dongliang GAO ZhaoShun ZHANG XianPing Applied Superconductivity Laboratory Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100080 China

Using commercial amorphous B powder (92% in purity) and Mg powder (99% in purity) as starting materials, 19-filament Fe/Cu clad MgB2 wires were fabricated by an in situ powder-in-tube method. Heat treatment was performed at 700℃ for 1 h under an argon gas atmosphere. The influence of Mg/B ratio on the microstructure and superconducting properties of the wires was investigated. It was found that the major phases of MgB2 wires were MgB2 accompanied with relatively small amounts of MgO and Fe2B impurities. With 5% excess Mg addition, the onset TC slightly decreased. However, the transport JC at 4.2 K and 4 T reached 1.07×104 A·cm-2, increasing by a factor of 1.4 compared to the stoichiometric sample. Moreover, the Mg1.05B2 sample showed an improved field dependence of JC, suggesting that less voids and smaller grain size of the Mg1.05B2 core lead to better grain connectivity and stronger flux pinning.

关键词： MgB2金属导线铜铁复合物制造工业灯丝

Simulation experiment on hydrocarbon generating potential of various source rocks on the northern margin of the Qaidam Basin,Qinghai,China

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Chinese Journal Of Geochemistry 2008年第4期27卷 412-419页

作者： LI Xin wang dongliang LIU Baoquan REN Chunling GUO Jianying SU Xuefeng wang Jian China University of Minning ＆ Technology Beijing 100083 China Exploration ＆ Development Research Institute Huabei Oilfield Company Renqiu 062552 China China University ofGeosciences Beijing 100083 China Research Institute of Petroleum Exploration ＆ Development Langfang 065000 China

The northern margin of the Qaidam Basin is one of the main oil-gas exploration areas in western China,where source rocks are composed mostly of Middle and Lower Jurassic dark mud shale,carbargillite and coal. A large number of subsurface and outcrop samples differing in lithology with different types of organic matter were selected for resource evaluation,research and calculation. And among them,13 samples were used for simulation experiment on hydrocarbon generating potential of various source rocks. At first,two kinds of heating modes were compared through simulation experiment,including single temperature-step heating and continual heating. Perhaps,the process of hydrocarbon generation and expulsion occurred naturally between a close system and an open system. In addition,the first heating mode was convenient,and all its reaction products were involved in the whole thermal evolution,and the final simulation experimental results were basically in consistency with the natural evolution trend. Therefore,the first heating mode was adopted and the hydrocarbon yield of every sample was worked out. Accord-ing to the type and lithology of organic matter and the hydrocarbon yield of samples for simulation experiment,hy-drocarbon generation and expulsion mode with three kinds of lithology and five types of source rock has been estab-lished to provide the basis for hydrocarbon generation evaluation,research and resource calculation.

关键词：中国青海油田碳氢化合物

Proteins:Neglected active ingredients in edible bird’s nest

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Chinese Herbal Medicines 2023年第3期15卷 383-390页

作者： Man Yuan Xiaoxian Lin dongliang wang Jianye Dai Hebei Edible Bird's Nest Fresh Stew Technology Innovation Center Langfang 065700China School of Pharmacy Lanzhou UniversityLanzhou 730000China

Edible bird’s nest(EBN)is a kind of natural invigorant with a long history of consumption in Asia,especially in *** is formed by mixing the saliva of swiftlets(Aerodramus)with feathers and other components during the breeding *** are the most important nutrient in *** studying proteins in EBN,we can not only elucidate their components at the molecular level,but also study their ***,it is of great significance to study the proteins in *** research on the proteins in EBN was preliminary and cursory,and no one has summarized and analyzed the proteins in EBN and correlated the bioactivities of these proteins with the biological functions of *** article focused on the proteins in EBN,listed the proteins identified in different proteomic studies,and introduced the sources,structures and bioactivities of the most frequently identified proteins,including acidic mammalian chitinase,lysyl oxidase homolog 3,mucin-5AC,ovoinhibitor,nucleobindin-2,calciumbinding protein(MW:4.5×10~4)and glucose-regulated protein(MW:7.8×10~4).The properties of these proteins are closely related to the bioactivities of ***,this article can provide inspiration for further research on the efficacy of EBN.

关键词： acidic mammalian chitinase bioactivityedible bird’s nest lysyl oxidase homolog 3 mucin-5AC proteins

Preparation and characterization of doxorubicin functionalized tiopronin-capped gold nanorods for cancer therapy

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Chinese Science Bulletin 2013年第33期58卷 4072-4076页

作者： HUO ShuaiDong JIN ShuBin ZHENG KaiYuan HE ShengTai wang dongliang LIANG XingJie CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Technology School of Materials Science and Engineering Tianjin Polytechnic University

Gold nanomaterials are immerging candidates in medical diagnosis and *** them,gold nanorods(Au NRs)are widely used for cancer *** as a novel thiol drug was used to stabilize Au NRs in this ***(DOX),a chemotherapeutic drug which works by interacting with DNA to arrest the cell cycle and induce apoptosis,was linked to Au NRs through electrostatic reaction with tiopronin,to obtain Au-TIOP-DOX *** NRs are also regarded as hyperthermia agents for photothermal cancer *** delivery system(Au-TIOP-DOX NRs)was designed for passively targeting tumor cells in cancer *** importantly,the carboxyl groups of tiopronin can be modified with some biological molecules(DNA/RNA,peptides,or drugs)to make Au NRs as a novel drug-delivery system for cancer treatment.

关键词：癌症治疗硫普罗宁纳米棒黄金阿霉素功能化自然保护区化疗药物