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223篇 您的检索式:作者名="R.B."
    题名 作者 年代 出处 被引量
1MICROSTRUCTURE EVALUATION OF SEMI-SOLID STEEL MATERIALS IN ROLLING PROCESS AND THE RESULTING MECHANICAL PROPERTIES显示文摘The experimental study on the familiar 60Si2Mn and lCrl8Ni9Ti materials rolled in the semi-solid state was carried out. Experimental results show that the segregation of liquid occurs when the semi-solid slurry is rolled, which influences the microstructure and mechanics performance of workpiece under room temperature. The globular solid particles don’t present plastic deformation unless high solid fraction. At the same time, the mechanics property of workpiece is pretty good while the semi-solid slurry of 1Cr18Ni9Ti material is rolled by a pass and no other treatment.R.B. Song, Y.L. Kang, J.L. Sun, A.M. Zhao and W.M. Mao School of Materials Science & Engineering, University of Science & Technology Beijing, Beijing 100083,China 2001Acta Metallurgica Sinica(English Letters)2001,14,5:17
2功利主义的问题:真正的和所谓的显示文摘功利主义哲学在当代哲学和实践领域中占有非常重要的地位,而规则功利主义是功利主义哲学中最古老也最有吸引力的形式。规则功利主义认为正确的行为是被道德准则所允许的,这种道德准则对行为者所处的社会来说是最优的。虽然这种规则功利主义可能会在确定如何接受一种道德规范、功利本身的内涵是什么、以及它的道德规范可以为我们的行为提供什么样的指导等方面都存在着一些难题,但是,这并不能驳倒规则功利主义,规则功利主义可以基于其自身的理论资源为我们的行为提供一种合理的道德规范,并且可以为经济平等和惩罚正义等社会问题提供有力的支持。R.B.布兰特 晋运锋(译) 2011世界哲学2011,,1:11
3道德权利概念及其功能显示文摘“权利”一词出现于许多语言环境中。人们常谈到法律权利,还有俱乐部成员的权利;在学位授予典礼上,则有“获得某种学位的权利和荣幸”之说。但是,我们也讲“道德权利”(有时候讲:“他在道德上有权于……”),而本文所讨论的正是道德权利概念。有人认为,享有道德权利恰恰是由于在道德上应当享有法律权利。其实不然。R.B.布兰特 程立显 1991世界哲学1991,,5:9
4重介质分选评述显示文摘尽管大家对重介质分选(HMS)已熟知了一段时间,但是,直到现在,这一通用技术的应用仍没有引起矿业界的重视。应该指出的是,随着基本投资和操作费用的增加,以及对环境问题的关注,重介质分选概念在将来应该给矿业带来巨大的效益。在高能耗、高费用的磨矿作业之前,对粗碎过的金属矿物和工业矿物进行预先富集,可以预先抛弃3 0 %~70 %的尾矿。因此,减少了进入昂贵的磨矿、随后的浮选或浸出作业的给矿量。这一包括有预选概念的流程可以大大改善矿山的经济效益。从现在的技术、经济和环境方面来看。R.B.布哈普 孔令炜 张覃 李长根 2005国外金属矿选矿2005,42,5:7
5分娩时有妊娠期高尿酸血症的先兆子痫患者早孕期的尿酸浓度显示文摘Objective: We investigated changes in serum uric acid across pregnancy in women with gestational hyperuricemia at delivery, with and without preeclampsia, compared with normal pregnant and women with preeclampsia without gestational hyperuricemia. Study design: This was a nested case-control study of 116 controls, 27 women with preeclampsia with predelivery hyperuricemia, 37 women with preeclampsia without predelivery hyperuricemia, and 35 women with gestational hypertension with hyperuricemia at delivery but without proteinuria. Serum uric acid and creatinine was measured across pregnancy. Results: Women with predelivery hyperuricemia,with andwithout preeclampsia, had increased uric acid concentrations across pregnancy compared with controls, after 25 weeks’gestation compared with women with preeclampsia without predelivery hyperuricemia. Adjusting for differences in glomerular filtration by serum creatinine accounted for part but not all of the increase in serum uric acid among women with preeclampsia and predelivery hyperuricemia. Conclusions: Among women with hyperuricemia at delivery, elevations in uric acid occur early. Multiple mechanisms may contribute to increased uric acid including changes in renal function.Powers R.W. Bodnar L.M. Ness R.B. 李奎 2006世界核心医学期刊文摘(妇产科学分册)2006,0,4:6
6大陆法系的司法判例——两大法系判例拘束力之比较显示文摘一、关于判例的'约束力' 英美法系的司法判决构成'法律'、因此不依据'遵循先例原则'、'法律'则不明确。大陆法系的法典及其辅助性法律则为'法律'。从理论上说,法院只能'适用'和'解释'法律。他们认为成文法提供了法律确定性所必须的基本因素,因此,司法判例毋需、或者通常没有约束力。我们通常认为:普遍法系的司法判例对下级法院具有约束力。R.B.施莱辛格 吴英姿 1991环球法律评论1991,13,6:6
7硅酸盐矿物和钾盐浮选显示文摘硅酸盐矿物是地球上储量最大 ,最普遍的矿物。虽然大多数硅酸盐矿物具有相似的化学性质 ,但世界上大多数选矿厂还是成功地生产出用于不同用途的硅酸盐产品。在美国 ,用浮选法生产的硅酸盐矿物有石英、长石、云母、锂辉石、滑石、高岭土和硅灰石。本文叙述了几个硅酸盐选矿厂的生产情况和影响它们浮选分离的条件。由于生产工艺常常受市场的制约 ,因此本文只提供了最普通产品的技术规格。钾盐与磷酸盐和氮一起是化肥最基本的组分。钾盐一般是从地下蒸发盐矿床中生产的 ,或从天然盐溶液中回收的。钾盐的浮选很独特 ,浮选是在饱和盐溶液中进行的。本文介绍了钾盐的浮选方法 。R.B.蒂平 魏明安 李长根 2002国外金属矿选矿2002,39,5:6
8Flux blended synthesis of novel Y2O3:Eu^3+ sensing arrays for highly sensitive dual mode detection of LFPs on versatile surfaces显示文摘In the present communication,various fluxes blended Y_2 O_3:Eu^(3+)(5 mol%) nanopowders(NPs) were successfully fabricated by solution combustion method.PXRD pattern confirms body-centered cubic structure of the prepared samples.Energy band gap(Eg) of the fabricated products was estimated and is found to be in the range of 3.13-3.32 eV.Photoluminescence(PL) emission spectra exhibit sharp and intense peaks at ~579,592,614,657,704 nm corresponding to ~5 D_0→~7 F_J(J = 0,1,2,3 and 4) transitions of Eu^(3+) ions.Significance of fluxes for enhancing the PL emissions was extensively studied.Photometric studies of the prepared samples are located in pure red region.Optimized NPs were explored as a novel sensing agent for visualization of latent fingerprints(LFPs) on various surfaces including porous,semiporous and non-porous surfaces followed by powder dusting technique.Various experiments including aging,temperature,scratching and aquatic fresh water treatment tests were performed to evaluate applicability of the fabricated NPs.Visualized LFPs exhibit well defined ridge details including most authenticated sweat pores are also revealed with high sensitivity,selectivity,little background hindrance and less toxicity.Aforementioned results evidence that the method and fabricated NPs can be considered to be simple,rapid and economical and provide novel sensing platform for LFPs visualization in prospective forensic applications.K.N. Venkatachalaiah H. Nagabhushana R.B. Basavaj G.R Darshan B. Daruka Prasad S.C. Sharma 2018Journal of Rare Earths2018,36,9:6
9The enhancement of fault detection and diagnosis in rolling element bearings using minimum entropy deconvolution combined with spectral kurtosis显示文摘N. Sawalhi R.B. Randall H. Endo 2007Mechanical Systems and Signal Processing2007,,6:5
10病险大坝加固方法综述(上)显示文摘在权衡各种补救措施时 ,必须考虑许多因素 ,补救措施的效果各个工程是不同的。对某个坝址最合适的方法对条件不同的另一个坝址就不一定适合。坝、坝基与环境可能具有一些不容易确定或分析的问题。主要变量包括补救方法是否适合当地条件与资源、坝址对外交通条件、天气、工程使用要求、补救工作可利用的时间。R.B.詹森 江莉 车友宜 2005水利水电快报2005,26,2:3
11Synthetic Vaginal Tapes for Stress Incontinence: Proposals for Improved Regulation of New Devices in Europe显示文摘Paul Abrams Christopher R. Chapple Marcus Drake Suzy El-Neil Susanne Ludgate Anthony R.B. Smith 2011European Urology2011,,:3
12空气间隔爆破及其在生产和预裂爆破中的应用显示文摘重点介绍许多有意义的成果 ,以确立空气间隔爆破的理论与原则 ,还提供在改变装药量条件下空气间隔爆破发生的破碎机理。考虑到这些方面 。P.帕尔罗伊 R.B.辛 张绪珍 祝玉学 2002国外金属矿山2002,27,1:3
13A compartmentalised model for the estimation of the cost of coccidiosis to the world’s chicken production industry显示文摘R.B. Williams 1999International Journal for Parasitology1999,,8:2
14Diamond like carbon coatings for potential application in biological implants—a review显示文摘C.A. Love R.B. Cook T.J. Harvey P.A. Dearnley R.J.K. Wood 2012Tribology International2012,,:2
15Residual stress analysis of structural stainless steel sections显示文摘R.B. Cruise L. Gardner 2007Journal of Constructional Steel Research2007,,3:2
16不锈钢构件截面的残余应力分析显示文摘对碳钢结构截面的残余应力的大小及分布的研究已经比较成熟,但是对不锈钢截面的残余应力研究却还很少见。不锈钢与碳钢有着不同的材料应力-应变特性和热性能,它们都影响着残余应力的形成。这意味着已确定的碳钢残余应力模型可能并不适合不锈钢。随着不锈钢的应用日益增多,对其残余应力的研究显得尤为重要。R.B. Cruise L. Gardner 2008钢结构2008,23,6:2
17Simulation of transpiration, drainage, N uptake, nitrate leaching, and N uptake concentration in tomato grown in open substrate显示文摘M. Gallardo R.B. Thompson J.S. Rodríguez F. Rodríguez M.D. Fernández J.A. Sánchez J.J. Magán 2009Agricultural Water Management2009,,12:2
18DNA technological progress toward advanced diagnostic tools to support human hookworm control显示文摘R.B. Gasser C. Cantacessi A. Loukas 2007Biotechnology Advances2007,,1:2
19Bioremediation of a crude-oil polluted agricultural-soil at Port Harcourt, Nigeria显示文摘M.J. Ayotamuno R.B. Kogbara S.O.T. Ogaji S.D. Probert 2006Applied Energy2006,,11:2
20Hypoglycaemic and antidiabetic activity of acetonic extract of Vernonia colorata leaves in normoglycaemic and alloxan-induced diabetic rats显示文摘G.Y. Sy A. Cissé R.B. Nongonierma M. Sarr N.A. Mbodj B. Faye 2005Journal of Ethnopharmacology2005,,1:2
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