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[期刊论文] 作者:Hongming GAO Lin WU Honggang D, 来源:材料科学技术:英文版 年份:2003
Up till now, most of the researchers believe that there are four kinds of forces in the weld pool convection, they aresurface tension, electromagnetic force, bu...
[期刊论文] 作者:MA YANG,MA GUIHUA, 来源:人权(英文版) 年份:2003
[期刊论文] 作者:Ma Peiwu, 来源:中国周刊 年份:2003
【正】 Roaming through Beijing’s old, narrow streets, hutongs, by old-fashioned pedicab and learning about the daily life of ordinary Beijing citizens has attr...
[期刊论文] 作者:Feng Ma, 来源:世界地质:英文版 年份:2003
The average size of the sand of dune in the vicinity of Tumen River is 0.12~0.30 mm, its standard deviation is 0.45~0.99 φ and the frequency cumulative distribut...
[期刊论文] 作者:MA Hong, 来源:黑龙江科技学院学报 年份:2003
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:MA Jin-Shuang, 来源:黑龙江科技学院学报 年份:2003
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:MA QIANG, 来源:人权(英文版) 年份:2003
[期刊论文] 作者:MA GUIHUA, 来源:人权(英文版) 年份:2003
[期刊论文] 作者:MA Jun,ZHU Qing-sen,MA Wen-bo,, 来源:城市道桥与防洪 年份:2003
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥...
[期刊论文] 作者:Ying-huaQi,PierreDesjardins,Ma, 来源:高分子科学:英文版 年份:2003
A series of near infrared (NIR) absorbing dinuclear ruthenium dicarbonylhydrazine complexes (DCH-Ru),[{Ru(bpy)2}2μ-DCH]n+ (where bpy = 2,2'-bipyridine and...
[期刊论文] 作者:YANShouHe,Jean-PierreDUFOUR,Ma, 来源:茶叶科学 年份:2003
报道了一种改进的茶氨酸(γ-谷酰基乙胺)的合成方法,包括L-谷氨酸的去氢成为吡咯烷酮羟酸(PCA),然后再加纯的乙胺(99%,气-液)反应,得率92.6%,再在84%乙醇溶液中重结晶后,高纯...
[期刊论文] 作者:LiMingDong BarbaraS.Hawkins Ma, 来源:美国医学会眼科杂志:中文版 年份:2003
目的:以有脉络膜新生血管的或者有此危险的患者为对象,研究在2种距离测试到视敏度的一致性。...
[期刊论文] 作者:TakayukiMizuno,TsutomuKitoh,Ma, 来源:黑龙江科技学院学报 年份:2003
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:Ma Xiao'e, 来源:Annual Report for China Institute of Atomic Energy 年份:2003
In 2003, China Institute of Atomic Energy (CIAE) singed 4 international memorandums andagreements with the institutes of Korea、Germany and Canada. CIAE sent 3...
[期刊论文] 作者:Rabinstein AA, Pichelmann MA,, 来源:中国微侵袭神经外科杂志 年份:2003
[期刊论文] 作者:WEIWei LIWen-huai YANGCheng MA, 来源:石油学报(石油加工) 年份:2003
Cu/ZrO2 and MoS2 based catalysts were developed for the synthesis of higher alcohols.Modified by the carbon chain growth enhancing elments,both catalyst systems...
[期刊论文] 作者:MA Sheng-Ming YU Shi-Chao, 来源:有机化学 年份:2003
The reaction of diethyl malonate with various substituted 1,2-allenic ketone can be catalyzed by 10% of K2CO3leading to polyfunctionalized β, γ-unsaturated en...
[期刊论文] 作者:MA Sheng-Ming JIAO Ning, 来源:有机化学 年份:2003
Organoboronic acids enjoy high prestige in the metal-catalyzed C-C bond formations. The most notable progress is the rhodium- and nickel-catalyzed conjugate add...
[期刊论文] 作者:MA Sheng-Ming NI Bu-Kuo, 来源:有机化学 年份:2003
Bicyclic alkaloids having izidine skeletons, are widely observed in various plant families, which show tumor inhibitory activity.……...
[期刊论文] 作者:MA Sheng-Ming YU Zhan-Qian, 来源:有机化学 年份:2003
Allenes are three carbon functional groups possessing two perpendicular π-orbitals. Their unique reaction be havior is spread over three carbon atoms, which sh...
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