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| 1 | Numerical simulation on electromagnetic field,flow field and temperature field in semisolid slurry preparation by A-EMS显示文摘A two-dimensional computational model coupling an annular electromagnetic stirring(A-EMS) with a macroscopic heat and fluid flow analysis in Al-alloys semisolid slurry preparation was developed.The dynamic evolutions of the electromagnetic field,flow field,and temperature field were presented successfully by commercial software ANSYS 10.0 with corresponding experimental verification.A horizontally rotational electromagnetic field and,thereby,a more intensive velocity field were uniformly distributed in the stirred melt even at commercial frequency,and thus,a lower temperature difference in the stirred melt and subsequent uniformly fine microstructures were obtained compared with the normal electromagnetic stirring.The simulation results were in good agreement with experimental ones. | ZHANG Zhifeng,CHEN Xingrun,XU Jun,and SHI Likai National Engineering & Technology Research Center for Nonferrous Metal Matrix Composites,General Research Institute for Nonferrous Metals,Beijing 100088,China | 2010 | Rare Metals2010，29，6： | 13 |
| 2 | A FLOW STRESS MODEL FOR AZ61 MAGNESIUM ALLOY显示文摘The flow stress behaviors of AZ61 alloy has been investigated at temperature range from 523 to 673K with the strain rates of 0.001-1s-1.It is found that the average activation energy,strain rate sensitive exponent and stress exponent are different at various deformation conditions changing from 1i3.6 to 176.3k J/mol,0.125 to 0.167 and 6 to 8 respectively.A flow stress model for AZ61 alloy is derived by analyzing the stress data based on hot compression test.It is demonstrated that the flow stress model including strain hardening exponent and strain softening exponent is suitable to predicate the flow stress.The prediction of the flow stress of AZ61 alloy has shown to be good agreement with the test data.The maximum differences of the peak stresses calculated by the model and obtained by experiment is less than 8%. | H.T.Zhou X.Q.Zeng Q.D Wang W.J.Ding State Key Laboratory of Metal Matrix Composite,Shanghai Jiaotong University,Shanghai 200030,China | 2004 | Acta Metallurgica Sinica(English Letters)2004，17，2： | 8 |
| 3 | Diffusion Bonding of Silicon Carbide Particulate Reinforced 2024 Al Composites显示文摘A study has been made on diffusion bonding of SiCp/2024Al composites by means of pure Al interlayer. In the condition of TB=843 K, PB=16 MPa, tB=60 min, the diffusion bonded joint, with a shear strength of 235 MPa, was obtained when a 15μm thick interlayer was used. The results of the shear testing and SEM indicate that fracture of the joint presented characteristics of ductile rupture. | Mingjiu ZHAO+, Liqing CHEN and Jing BI (Metal Matrix Composites Department, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China) Gang ZHANG (Shenyang Institute of Technology, Shenyang 110015, China) | 2000 | Journal of Materials Science & Technology2000，16，5： | 6 |
| 4 | 八乙墓卟啉和四苯基卟啉合钌(Ⅱ)及锇(Ⅱ)的二氧加合物的红外光谱显示文摘OEP(八乙基卟啉阴离子)和TPP(四苯基卟啉阴离子)合钌(Ⅱ)和锇(Ⅱ)的二氧加合物由matrix分离技术得到(T=20-43K,P=10-5-10-6torr).为了确定v(O2)带的归属应用了同位素取代法16O2/18O2.IR谱说明对于钌的两种加合物(指OEP和TPP)都有两种异构体,其V(16O2)频率为:Ru(OEP)O2,1141和1103cm-1;Ru(TPP)O2,1167和1114cm-1.Os(TPP)O2只生成一种异构体,v(16O2)=1090cm-1,异构体v(16O2):[Ru(OEP)O2],1141cm-1,[Ru(TPP)O2],1167cm-1,这些加合物约在100K时分解,它们的结构指定为endon,而异构体[Ru(OEP)O2],1103cm-1,[Ru(TPP)O2],1114cm-1和[Os(TPP)O2],1090cm-1,在240—270K分解,它们的结构指定为桥联二聚体.在加合物中,将OEP换成TPP引起的钌加合物v(O2)频率的改变比铁和钴加合物更大.v(O2)相对强度的变化顺序为:Fe(Ⅱ)→Ru(Ⅱ)→Os(Ⅱ). | Lewandowski, W.(Institute of General Chemistry. warsaw Agricultural University.SGGW. 02-528 Warsaw, Rakowiecka 26/30, Poland)(Matrix isolation IR spectra were obtained during author’s stay at the Marquette University, Milwaukee, WI 53233(USA). | 1994 | 无机化学学报1994，10，1： | 4 |
| 5 | Microstructure of Cu_(60)Zr_(20)Ti_(20) bulk metallic glass rolled at different strain rates显示文摘The structural evolution of Cu60Zr20Ti20 bulk metallic glass during rolling at different strain rates and cryogenic temperature was investigated by X-ray diffraction (XRD),differential scanning calorimetry (DSC) and high-resolution transmission electron microscopy (HRTEM). It is revealed that the deformation-induced transformation is strongly dependent on the strain rate. At the lowest experimental strain rate of 1.0×10-4 s-1,no phase transformation occurs until the highest deformation degree reaches 95%. In a strain rate range of 5.0×10-4-5.0×10-2 s-1,phase separation oc-curs in a high deformation degree. As the strain rate reaches 5.0×10-1 s-1,phase separation and nanocrystallization concur. The critical deformation degree for oc-currence of phase transformation decreases with the strain rate increasing. | LI JinFu,CAO QingPing & ZHOU YaoHe State Key Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200030,China | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，4： | 3 |
| 6 | Effect of slow monomer addition on molecular parameters of hyperbranched polymers synthesized in the presence of multifunctional core molecules显示文摘This study develops the kinetics for the slow monomer addition technique in the synthesis of hyperbranched polymers. Taking the conversion of monomer (x) as a variable, we derived the analytic expressions of molecular size distribution function, average degree of polymerization, polydispersity index and degree of branching. These expressions are not only amenable to the polymerization with high monomer conversion, but also appropriate to describe the whole polymerization process. Comparison with the one-pot polymerization indicates that the slow monomer addition technique improves the molecular weight distribution and increases the degree of branching for the products obtained. | ZHOU ZhiPing1, Jia ZhengWei1 & YAN DeYue2 1School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China 2State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China | 2010 | Science China Chemistry2010，53，4： | 3 |
| 7 | Bioreducible unimolecular micelles based on amphiphilic multiarm hyperbranched copolymers for triggered drug release显示文摘A novel type of bioreducible amphiphilic multiarm hyperbranched copolymer (H40-star-PLA-SS-PEG) based on Boltorn H40 core,poly(L-lactide) (PLA) inner-shell,and poly(ethylene glycol) (PEG) outer-shell with disulfide-linkages between the hydrophobic and hydrophilic moieties was developed as unimolecular micelles for controlled drug release triggered by reduction.The obtained H40-star-PLA-SS-PEG was characterized in detail by nuclear magnetic resonance (NMR),Fourier transform infrared (FTIR),gel permeation chromatography (GPC),differential scanning calorimeter (DSC),and thermal gravimetric analysis (TGA).Transmission electron microscopy (TEM) and dynamic light scattering (DLS) analyses suggested that H40-star-PLA-SS-PEG formed stable unimolecular micelles in aqueous solution with an average diameter of 19 nm.Interestingly,these micelles aggregated into large particles rapidly in response to 10 mM dithiothreitol (DTT),most likely due to shedding of the hydrophilic PEG outer-shell through reductive cleavage of the disulfide bonds.As a hydrophobic anticancer model drug,doxorubicin (DOX) was encapsulated into these reductive unimolecular micelles.In vitro release studies revealed that under the reduction-stimulus,the detachment of PEG outer-shell in DOX-loaded micelles resulted in a rapid drug release.Flow cytometry and confocal laser scanning microscopy (CLSM) measurements indicated that these DOX-loaded micelles were easily internalized by living cells.Methyl tetrazolium (MTT) assay demonstrated a markedly enhanced drug efficacy of DOX-loaded H40-star-PLA-SS-PEG micelles as compared to free DOX.All of these results show that these bioreducible unimolecular micelles are promising carriers for the triggered intracellular delivery of hydrophobic anticancer drugs. | PANG Yan 1,LIU JinYao 1,SU Yue 1,ZHU BangShang 2,HUANG Wei 1,ZHOU YongFeng 1,ZHU XinYuan 1,2 & YAN DeYue 1 1 School of Chemistry and Chemical Engineering,State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai 200240,China 2 Instrumental Analysis Center,Shanghai Jiao Tong University,Shanghai 200240,China | 2010 | Science China Chemistry2010，53，12： | 3 |
| 8 | Enzymatic activity in the 显示文摘 | Frφlund B Griebe T Nielsen activated sludge floe matrix P H | 1995 | Applied Microbiological Biotechnology1995，43，： | 1 |
| 9 | Possible role in migration and homing 显示文摘 | Gareia-de-Alba C Becerril C Ruiz V et ah Expression of matrix metalloproteases by fibroeytes | 2010 | Am J Respir Crit Care Med2010，182，： | 1 |
| 10 | Water Pollution Research J显示文摘 | R Berlardi J Pawliszyn The application of chemically modified fused silica fibers in the extracyion of organics from water matrix samples and their rapid transfer to capillary columns | 1989 | Canada1989，24，： | 1 |
| 11 | Improved Newton's method with exact line searches to solve quadratic matrix equation显示文摘 | symmetric centrosymmetric with a 55(1): 39-57 matrix equation with a submatrix Long Jianhui Hu Xiyan Zhang Lei | 2008 | Journal of Computational and Applied Mathematics2008，222，2： | 1 |
| 12 | Tumorigenic potential of extracellular metalloproteinase inducer显示文摘 | Zucker S Hymowite matrix ZM Rollo EE | 2001 | Am J Pathol2001，158，： | 1 |
| 13 | NMR-imaging studies of dimensional change in the gel layer and core of HPMC tablets undergoing hydration显示文摘 | Rajabi-Siahboomi AR Bowtell RW Structure and behavior in hydrophilic matrix sustained release form:2 | 1994 | J Controlled Rel1994，31，： | 1 |
| 14 | Res显示文摘 | Laboratory Studies of Capillary Interaction in Fracture/matrix Systems | | 0，，： | 1 |
| 15 | Use o f the album in/creatinine ratio to detect micro albuminuria implieations of sex and race显示文摘 | Matrix HJ Hsu CY Shaykevieh S Curhan G | 2002 | J A m Soc Nep hrol2002，13，4： | 1 |
| 16 | In situ hybridization Tissue inhibitor of metailoproteinase-1 and type IV collagen in diabetic nephropathy 显示文摘 | Suzuki D Miyazaki M Jinde k studies of matrix metalloproteiuase | 1997 | Kidneylnt1997，52，11： | 1 |
| 17 | EFFECT OF OXIDATION OF SiC ON AGING CHARACTERISTICS OF SiC PARTICLES AND SHORT MULLITE FIBERS REINFORCED 2024Al COMPOSITE显示文摘INTRODUCTIONAgingtreatmenthasbeenwidelyusedasafurtherstrengtheningmeansforaluminummatrixcomposites.Studyofcomposites’agingla... | Mei Zhi Department of Materials, Huazhong University of Science and Technology, Wuhan 430074, P. R. China Jin Yanping, Gu Mingyuan and Wu Renjie State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200030, P. R. | 1998 | 中国有色金属学会会刊:英文版1998，8，4： | 1 |
| 18 | 显示文摘 | CHOPRA S PATIL G V MOTWANI S K Release modulating hydrophilie matrix systems of losartan potassium: optimization of formulation using statistical experimental design | 2007 | Eur J Pharm Biopharm2007，66，1： | 1 |
| 19 | Veterinary s survey in meat: an HPLC method with a phase dispersion extraction 显示文摘 | Boulaire S drug residue matrix solid Bauduret J C Andre F | 1997 | Journal of and Food Chemistry1997，45，6： | 1 |
| 20 | Pediatric pancreatict rauma: predictors of nonoperative management failure and associated out- comes显示文摘 | Matrix KD Tataria M Holmes J | 2007 | Pediatr Surg2007，42，2： | 1 |
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