搜索筛选:
搜索耗时1.3569秒,为你在为你在102,285,761篇论文里面共找到 865 篇相符的论文内容
发布年度:
Microwave-Assisted Preparation of CdS Nanoparticles in a Halide-Free Ionic Liquid and Their Photocat
[期刊论文] 作者:M. ESMAILI, A,HABIBI-YANGJEH,
来源:催化学报 年份:2004
A microwave-assisted (4-6 min) method was used for the preparation ofCdS nanoparticles in 1-ethyl-3-methylimidazolium ethyl sulfate, a halide-free room-temperat...
[期刊论文] 作者:Susan M. Briggs,
来源:中国输血杂志 年份:2004
1 自然因素1.1 余震 地震很少单发生.大多数地震发生后会伴随很多的余震,有些地震会出现前震.余震是一个以弹性回跃形式持续的过程,有可能跟主震一样强烈.36%的余震会发生在...
[期刊论文] 作者:Richard M. Karp,
来源:计算机科学技术学报(英文版) 年份:2004
This article explores the changing nature of the interaction between computer science and the natural and social sciences.After briefly tracing the history of s...
[期刊论文] 作者:SUDHAKARAN M.,AJAY-D-VIMALRAJ,
来源:浙江大学学报A(英文版) 年份:2004
This paper presents an efficient and reliable genetic algorithm (GA) based particle swarm optimization (PSO) technique (hybrid GAPSO) for solving the economic d...
[期刊论文] 作者:José M. Remes-Troche,
来源:世界胃肠病学杂志(英文版) 年份:2004
AIM: To determine whether the hematocrit (Hct) at admission or at 24 h after admission was associated with severe acute pancreatitis (AP), organ failure (OF), a...
[期刊论文] 作者:M. V. Villar,
来源:岩石力学与岩土工程学报(英文版) 年份:2004
The bentonite barrier of underground repositories for high-level radioactive waste will be hydrated by the groundwater while it is subjected to high temperature...
[期刊论文] 作者:James M. TIEN,
来源:系统科学与系统工程学报(英文版) 年份:2004
Urban infrastructures are the focus of terrorist acts because, quite simply, they produce the most visible impact, if not casualties. While terrorist acts are t...
Angular Position Controller and Its Design Model Verification for the Electro-Hydraulic Servo Contro
[期刊论文] 作者:KARAM M. Elbayomy,,
来源:Computer Aided Drafting,Design and Manufacturing 年份:2004
The angular position controller is applied to electro-hydraulic servo actuator system (EHSAS) to control the output of the rotary actuator. It works as a compen...
[期刊论文] 作者:Ingeborg M. Rocker,,
来源:建筑与文化 年份:2004
这个名为“不可分的整体-史无前例”的展览馆是一个有关文化和自然现象的混合空间。在某种意义上说,这是一个前无古人的空间上的实验。 引用中国的传统哲学思想和建造技术,......
[期刊论文] 作者:Ali M. Kutan,,
来源:China & World Economy 年份:2004
This paper empirically tests the existence of contagion using data on China's five parallel markets with different entry barriers for foreign capital. Taking th...
[期刊论文] 作者:LI M. Victor,
来源:材料热处理学报 年份:2004
The residual stresses and distortion induced by quenching in an eccentric ring were investigated in this study with finite element method. The ring was made of...
[学位论文] 作者:Asteria M. Kimambo,,
来源:中国石油大学(华东) 年份:2004
在钻井和完井过程中通过使用环境友好的钻井液来降低储层损害并保持储层的渗透性,可以提高天然气和石油产能。可逆乳化钻井液兼具水基钻井液和油基钻井液的优点,被认为是钻井...
[期刊论文] 作者:Erik M. Schmauser,
来源:国际纺织导报 年份:2004
回顾了针梳机和针梳部件的发展.详细研究了单程式针梳板的发展.在过去的25年中,链传动式针梳机的针梳部件经历了许多变化:从最初的焊接式到针梳式,最后发展到现在的单程式针...
[期刊论文] 作者:M.瑞维,
来源:老年学杂志 年份:2004
美国已证明,牙根龋的发生与年龄有一定关系,但不是决定因素。只有牙骨质暴露后才易发生牙根皮面龋。故它与牙周袋的发生和牙龈萎缩有关。在美国老年护理院的病人常因护理与自...
PID Controller Optimization by GA and Its Performances on the Electro-hydraulic Servo Control System
[期刊论文] 作者:Karam M. Elbayomy,,
来源:Chinese Journal of Aeronautics 年份:2004
A proportional integral derivative (PID) controller is designed and attached to electro-hydraulic servo actuator system (EHSAS) to control the angular position...
[期刊论文] 作者:Radicella Sandro M.,,
来源:Communications in Theoretical Physics 年份:2004
This paper describes the construction of a one-dimensional time-dependent theoretical ionospheric model,which is based on numerical solution of continuity and...
[期刊论文] 作者:Thomas M. Over,
来源:Science in China(Series E:Technological Sciences) 年份:2004
Based on the domestic and foreign concerning researches, this paper submits the runoff space-time distribution theory which shows evident scientific significanc...
[期刊论文] 作者:EBADIAN M. A.,
来源:Journal of Hydrodynamics(Ser.B) 年份:2004
Alternative refrigerant R-134a is considered to be ozone-friendly and a potential candidate for replacing the refrigerant R-12 in refrigeration and air-conditio...
[期刊论文] 作者:Jan M. Steijns, A. C. M. van H,
来源:中国食品工业 年份:2004
乳铁蛋白是铁传递物质家族中与铁结合的一种糖蛋白,主要存在于消化、呼吸和生殖系统入口的外分泌腺产物中,这意味着它对入侵的病菌起到非针对性的防御作用。作为一种与...
[期刊论文] 作者:Csikászik A., M. Csikós M., Sz,
来源:世界核心医学期刊文摘(皮肤病学分册) 年份:2004
...
相关搜索: