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[期刊论文] 作者:G.VAIRAMANI,T.SENTHIL KUMAR,S.,
来源:中国有色金属学报(英文版) 年份:2004
在奥氏体不锈钢与铜合金异种材料摩擦焊接过程中,采用响应面方法优化摩擦焊接工艺参数,以获得抗拉强度最大和界面硬度最小的焊接接头。采用三因素、五水平中心复合正交矩阵来确......
[期刊论文] 作者:THIRUMURUGAN,S. KUMARAN,
来源:中国有色金属学报(英文版) 年份:2004
挤压比为4:1,将铸态AZ91镁合金分别在250,300和350°C下进行挤压,随后进行析出硬化处理(T6)。经过热挤压和析出硬化处理后,铸态AZ91镁合金中粗大的和偏析Mg17Al12析出相被细化并均...
Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of Th
[期刊论文] 作者:Subramanian,S. Palanichamy,
来源:船舶与海洋工程学报(英文版) 年份:2004
Corrosion behaviour and biofouling characteristics of mild steel in three different coastal locations in the Gulf of Mannar, India have been studied over a peri...
[期刊论文] 作者:K.KRISHNAMURTHI,S. SARAVANA DE,
来源:生物医学与环境科学(英文版) 年份:2004
Objective To determine the DNA damaging potential and the genotoxicity of individual compounds in pesticide contaminated soil. Methods In the present study, DNA...
[期刊论文] 作者:S. Engin,U. Byük,
来源:矿物冶金与材料学报 年份:2004
Zn-5wt% Al eutectic alloy was directionally solidified with different growth rates (5.32-250.0 tm/s) at a constant temperature gradient of 8.50 K/mm using a Brid...
Mechanical properties and corrosion resistance of low rigidity quaternary titanium alloy for biomedi
[期刊论文] 作者:Han-Cheol CHOE,Viswanathan S.,
来源:中国有色金属学报(英文版) 年份:2004
Electrochemical corrosion of Ti-35Nb-5Ta-7Zr alloy fabricated by arc melting and heat treatment process was studied in 0.9% NaCl at (37±1) ℃. Phase and micros...
[期刊论文] 作者:Viswanathan S. SAJI,Han-Cheol,
来源:中国有色金属学报(英文版) 年份:2004
The cast structures influencing the electrochemical corrosion behavior of Co-Cr and Ni-Cr dental alloys were studied using potentiodynamic polarization and AC i...
Expansions for the Distribution and the Maximum from Distributions with an Asymptotically Gamma Tail
[期刊论文] 作者:Christopher S. WITHERS,Saralee,
来源:数学学报(英文版) 年份:2004
We give expansions about the Gumbel distribution in inverse powers of n and log n for Mn, the maximum of a sample size n or n+1 when the j-th observation isμ(...
[期刊论文] 作者:S. Basavarajappa,G. Chandramoh,
来源:材料科学技术学报(英文版) 年份:2004
An attempt has been made to study the influence of wear parameters like applied load, sliding speed, sliding distance and percentage of reinforcement on the dry...
[期刊论文] 作者:S. KESAVAN,N. SABU,
来源:数学年刊B辑(英文版) 年份:2004
The eigenvalue problem for a thin linearly elastic shell, of thickness 2e, clamped along its lateral surface is considered. Under the geometric assumption on th...
Relationship between serum b2-microglobulin levels and virological breakthrough in HBeAg-negative ch
[期刊论文] 作者:Ioannis S. Elefsiniotis,Antoni,
来源:世界胃肠病学杂志(英文版) 年份:2004
AIM: Predictive value of serum b2-microglobulin (b2m)levels for virological breakthrough (VB) in HBeAg-negative chronic hepatitis B (CHB) patients under long-te...
[期刊论文] 作者:Jiamjarasrangsi,S. Bualert,,
来源:国际结核病与肺部疾病杂志(中文版) 年份:2004
背景:泰国中部42个社区与综合医院.目的:检验泰国中部公立医院不足的室内通风对院内结核病预防的影响.设计:通过横断面调查了解目标医院的323个患者医疗区域和辅助区域的室内...
[期刊论文] 作者:Vorobiev,S. Cheburashkin,
来源:冰川冻土 年份:2004
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7...
[期刊论文] 作者:伯尼·S.西格尔,,
来源:海外英语 年份:2004
你小时候喜欢做什么?想办法在生活中重新找到小时候的那种乐趣吧。每天花点时间去玩是很重要的。你认为是在玩,在别人看来可能就是在工作。但问题并不在于此,其实真正重要的在于......
[期刊论文] 作者:S. Poulat,D.G Teer,
来源:材料热处理学报 年份:2004
Micro-scale abrasion testing is widely used to determine the abrasion resistance of thin film coatings; it is a simple technique that can easily be used as part...
[期刊论文] 作者:YANG Mildred S. M.,
来源:色谱 年份:2004
Adenosineanditscorrespondingnucleotidesadenosine 5′monophosphate (AMP) ,adenosine 5′diphosphate (ADP)andadenosine 5′triphosphate(ATP)areimportantbiomolecules...
[期刊论文] 作者:SA MUEL S. P.Shen,
来源:Journal of Hydrodynamics(Ser.B) 年份:2004
A universal in tailing wave-train generation of forced soliton generation over topography is found theoretically as the flows are at the resonant points and it...
[期刊论文] 作者:Sam S. Y. WANG,
来源:International Journal of Sediment Research 年份:2004
The helical flow significantly affects the flow, sediment transport and morphological evolution in curved channels. A semi-empirical formula is proposed to det...
[期刊论文] 作者:S. Beyer,J. Weinhold,
来源:国际纺织导报 年份:2004
为了能使用少量的线性低密度聚乙烯、高密度聚乙烯和聚丙烯纱线高效地制造人造草皮,位于德国Chemnitz的Oerlikon Barmag公司发明了一种紧凑型生产线,其可提供180kg/h的产能,为普...
[期刊论文] 作者:Dr.Wlodek S.,夏雨人,
来源:光盘技术 年份:2004
光盘的格式的开发中,要数“双层可录DVD”格式的“竞赛”为最新。那就是容量为8.5GB的双层DVD+R格式,取名为(DVD+R DL)。早在汤姆逊·爱迪生发明了唱片的雏形并刻上连续的声...
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