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295篇 您的检索式:作者名="Needham R"
    题名 作者 年代 出处 被引量
1采用里卡多高速直喷式4气门发动机以满足低排放和燃油经济性的要求显示文摘为了研究和证明高速直喷式柴油机的潜力,里卡多公司实施了一项研究并分析每缸4气门燃烧系统性能和排放的计划。分析研究以计算流体力学的研究为基础,以模拟活塞顶燃烧室凹腔内油束与空气的相互作用,并加深对混合过程的理解。试验研究的主要变量包括涡流比、燃烧室凹腔的几何形状、喷油嘴的结构型式、当代先进的转子式电控分配泵和废气再循环的作用。系统的优化过程提供一种固定不变的涡流型式,其制动平均有效压力可达1.5 MPa[15 bar]以上,而BSU(波许烟度单位)却在1.0以下。R49欧洲Ⅱ NO_X水平满足烟度、颗粒排放量和燃油经济性的竞争要求,证明完全按今后发展的欧洲Ⅱ具有极大的开发潜力。车辆排放和燃油耗的模拟表明,此燃烧系统具有满足90年代规定的重型和轻型车排放法规的潜力。Needham J R Whelan S 张耀庆 1996国外内燃机1996,28,2:5
2A logic of authentication显示文摘M Burrows M Abadi R M Needham 1989Proc R Soc Lond1989,,:2
3Lipoprotein lipase gene variants relate to presence and degree of microalbuminuria in type II diabetes显示文摘MATTU R K TREVELYAN J NEEDHAM E W 2002Diabetologia2002,45,6:2
4A logic of cryptographic 显示文摘Burrows M Abadi M Needham R M 1990ACM Transaction on Computer Systems1990,8,1:2
5Insights into proteinprotein interfaces using a Bayesian network prediction method 显示文摘Bradford J R Needham C J Bulpitt A J 2006Journal of Molecular Biology2006,362,2:1
6DNA variants at the LPL gene locus associate with angiographically defined severity of atherosclerosis and serum lipoprotein levels in a Welsh population显示文摘Mattu RK Needham EW Morgan R 1994Arteriosclerosis Thromb1994,14,7:1
7A Logic of Authentication显示文摘Burrows M Abadi M Needham R 1990ACM TCS1990,18,1:1
8Using encryption for authentication in large network of computer显示文摘NEEDHAM R M SCHROEDER M D 1978Com- munication of the ACM1978,21,12:1
9Ecotourlsm: The Evolving Contemporary Definltion显示文摘Donohoe H M Needham R D 2006Journal of Ecotourism2006,5,3:1
10A DNA variant at the angiotensin -- converting enzyme gene locus associates with coronary artery disease in the Caerphilly Heart Study显示文摘Mattu R K Needham EW Gahon Dj 1995Circulation1995,91,:1
11Stable pattern and standing wave formtion in a simple isothermal cubic autocatalytic reaction scheme显示文摘Hill R Merkin J H Needham D J 1995Journal of Engineering Mathematics1995,29,3:1
12The worm gut : a natural clay mineral factory and a possible cause of diagenetic grain coats in sandstones显示文摘Worden R H Needham S J Cuadros J 2006Journal of Geochemical Exploration2006,89,:1
13A Logic of Authentication显示文摘Burrows M Abadi M Needham R 1990ACM Transactions on Computer Systems1990,8,1:1
14Linear Programming for Flood Control in the Iowa and Des Moines Rivers显示文摘Needham J T Watkins D W Lund J R 2000Journal of Water Resources Planning and Management2000,126,3:1
15Epidermal-growth-factor receptor status as predictor of early recurrence of and death from breast cancer显示文摘SAINSBUR Y R FARNDON J R NEEDHAM G K 1987Lancet1987,,:1
16Using encryption for authentication in large networks of computers显示文摘Needham R M Schroeder M D 1978Communications of the ACM1978,21,12:1
17A logic of authen- tication显示文摘Burrows M Abadi M Needham R 1990ACM Transactions on Computer System1990,8,1:1
18Overweight-related victimization on peer relationships: the female adolescent perspective 显示文摘Needham BL Crosnoe R 2008Obesity ( Sliver Spring)2008,16,2:1
19Microbiological monitoring of laboratory mice and biocontainment in individually ventilated cages : a field study显示文摘Brielmeier M Mahabir E Needham J R 2006Lab Anim2006,40,24:1
20A Logic of Authentication 显示文摘Burrows M A Needham R 1990ACM Transactions on Computer Systems1990,8,1:1
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