|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 国际国立科研机构学术影响力评价方法研究显示文摘本文旨在建立一套对不同国家的国立科研机构学术影响力的评价方法。首先,以3E理论和'阶梯理论'为指导,提出了国际国立科研机构学术影响力的评价模型和指标体系;其次,以国际上不同国立科研机构为对象进行验证,发现选取的86个国立科研机构具有可比性,并且指标体系有较好的效度。 | 杨国梁 W.B. Liu 李晓轩 刘智渊 | 2010 | 中国科技论坛2010，，6： | 14 |
| 2 | Microstructure and mechanical optimization of probeless friction stir spot welded joint of an Al-Li alloy显示文摘In this work, a third generation Al-Li alloy has been successfully spot welded with probeless friction stir spot welding(P-FSSW), which is a variant of conventional friction stir welding. The Box-Behnken experimental design in response surface methodology(RSM) was applied to optimize the P-FSSW parameters to attain maximum tensile/shear strength of the spot joints. Results show that an optimal failure load of7.83 kN was obtained under a dwell time of 7.2 s, rotation speed of 950 rpm and plunge rate of 30 mm/min.Sufficient dwell time is essential for heat conduction, material flow and expansion of the stir zone to form a sound joint. Two fracture modes were observed, which were significantly affected by hook defect.In addition to mechanical testing, electron backscattering diffraction(EBSD) and differential scanning calorimetry(DSC) were used for microstructure evolution and property analysis. The precipitation of GP zone and Al3 Li as well as the ultrafine grains were responsible for the high microhardness in the stir zone. | Q. Chu W.Y. Li X.W. Yang J.J. Shen A. Vairis W.Y. Feng W.B. Wang | 2018 | Journal of Materials Science & Technology2018，34，10： | 12 |
| 3 | SUPERPLASTICITY AND DIFFUSION BONDING OF IN718 SUPERALLOY显示文摘The superplasticity and diffusion bonding of IN718 superalloy were studied in this article. The strain rate sensitivity index m was obtained at different temperatures and various initial strain rates using the tensile speed mutation method; m reached its maximum value 0.53 at an initial strain rate of 1×10-4s-1 at 1253K. The diffusion bonding parameters, including the bonding temperature T, pressure p, and time t, affected the mechanism of joints. When the bonded specimen with 25μm thick nickel foil interlayer was tensile at room temperature, the shear fracture of the joints with nickel foil interlayer took place at the IN718 part. Microstructure study was carried out with the bonded samples. The microstructure shows an excellent bonding at the interfaces. The optimum parameters for the diffusion bonding are: T = 1273-1323K, p = 20-30MPa, t = 45-60min. | W.B. Han K.F. Zhang B. Wang D.Z. Wu | 2007 | Acta Metallurgica Sinica(English Letters)2007，20，4： | 8 |
| 4 | 防止侵蚀的香根草篱笆显示文摘本文介绍植物篱,特别是香根草在耕地和非耕地上控制土壤侵蚀、减少地表径流的情况。栽种植物篱由来已久,但没有几种植物篱既有效、耐久,又易种、易管。因而,植物篱的效用并不理想。结果,许多能够栽种植物篱的地区仍在继续使用费用昂贵的传统土方工程。本文根据长期经验及初步研究成果资料,阐明了香根草的农学特性及其作为热带、亚热带地区延长土地耕作寿命重要措施的潜在可能。 | J.W.斯迈尔 W.B.马格拉思 谷丽雅 项玉章 | 1991 | 中国水土保持1991，，6： | 5 |
| 5 | 本质上有争议的概念显示文摘在人文科学与社会科学的说理活动中,人们往往就概念的正确用法争论不休,并一直试图通过赋予概念以单一固定之意义来解决纷争。事实上,有些概念也许本质上就是有争议的。这样一些概念符合一些基本的限定条件。本质上就具有争议性,这一点正是这些概念得以持续使用的生命力所在。当然,争议性并不意味着含混不清,'正确的'用法就在实际使用中。因此就不应当像理解自然科学概念一样,为其寻求某一种'正确用法'来解决纷争,而应当通过描绘这些评价性概念的历史来加深对这种概念的理解。哲学反思有助于我们对于这样的概念做出'理性'的思考。 | W.B.盖里 徐韬 叶磊蕾 | 2014 | 世界哲学2014，，6： | 5 |
| 6 | 儿童气质危险因素:会议报告显示文摘本文是对一次国际会议上的报告及发表论文的综述,涉及三个问题:(1)关于那些有实际意义的气质危险因素,我们有何了解?根据“良好适应”原则,这些危险因素可能会影响儿童的身体健康、心理发展、社会行为,甚或学习能力。(2)由于这些发现,我们已经做些什么或者可能做些什么?一些心理学者已经将这些发现用于儿科学、精神病学和预防性指导的实践中。气质测定理论可能更多地运用于诊断和处理行为和学习能力方面的问题,而不是对普通人群进行常规行筛查。(3)将来我们应采取什么行动?会上讨论了一系列问题、但最突出的问题是,如何运用我们现已了解的有关知识。 | W.B.凯利 刘超英 | 1992 | 心理科学进展1992，2，2： | 3 |
| 7 | 英国欧洲赤松木材尺寸稳定化的研究显示文摘采用琥珀酐(SA)和1,2-环氧丁烷(Ep)在二甲替甲酰胺溶剂中处理欧洲赤松木材(Pinus sylvestris)使其低酯化。并利用D-200线型微差式互感器(LVDT)自动而连续地测量了改性木材吸水膨胀率的变化,采用傅里叶变换红外光谱仪分析了木材与改性药剂的化学反应。结果表明,这些化学药剂能够有效地改善木材的尺寸稳定性。 | 李坚 Banks W.B. Jones G.L Zhang Yichen | 1992 | 东北林业大学学报1992，20，1： | 3 |
| 8 | CRYSTALLOGRAPHIC HOMOGENIZATION FINITE ELEMENT METHOD AND ITS APPLICATION ON SIMULATION OF EVOLUTION OF PLASTIC DEFORMATION INDUCED TEXTURE显示文摘A crystallographic homogenization method is proposed and implemented to predict the evolution of plastic deformation induced texture and plastic anisotropy(earring) in the stamping of polycrystalline sheet metals.The microscopic inhomogeneity of crystal aggregate has been taken into account with the microstructure made up of a representative aggregate of single crystal grains.Multi-scale analysis is performed by coupling the microscopic crystal plasticity with the macroscopic continuum response through the present homogenization procedure.The macroscopic stress is defined as the volume average of the corresponding microscopic crystal aggregations,which simultaneously satisfies the equation of motion in both micro-and macro-states.The proposed numerical implementation is based on a finite element discretization of the macrocontinuum,which is locally coupled at each Gaussian point with a finite element discretization of the attached micro-structure.The solution strategy for the macro-continuum and the pointwiseattached micro-structure is implemented by the simultaneous employment of dynamic explicit FE formulation.The rate-dependent crystal plasticity model is used for the constitutive description of the constituent single crystal grains.It has been confirmed that Taylor's constant strain homogenization assumption yields an undue concentration of the preferred crystal orientation compared with the present homogenization in the prediction of texture evolution,with the latter having relaxed the constraints on the crystal grains.Two kinds of numerical examples are presented to demonstrate the capability of the developed code:1) The texture evolution of three representative deformation modes,and 2) Plastic anisotropy(earring) prediction in the hemispherical cup deep drawing process of aluminum alloy A5052 with initial texture.By comparison of simulation results with those obtained employing direct crystal plasticity calculation adopting Taylor assumption,conclusions are drawn that the proposed dynamic explicit crystallographic homogenization FEM is able to more accurately predict the plastic deformation induced texture evolution and plastic anisotropy in the deep drawing process. | Yiping Chen W.B. Lee E. Nakamachi | 2010 | Acta Mechanica Solida Sinica2010，23，1： | 3 |
| 9 | Two-dimensional slope stability analysis by limit equilibrium and strength reduction methods显示文摘 | Y.M. Cheng T. Lansivaara W.B. Wei | 2006 | Computers and Geotechnics2006，，3： | 2 |
| 10 | The purification of ammonia monooxygenase from Paracoccus denitrficans显示文摘 | James W.B. Moir Lisa C. Crossman Stephen Spiro David J. Richardson | 1996 | FEBS Letters1996，，1： | 2 |
| 11 | Experiment and modeling of mechanical properties on iron matrix composites reinforced by different types of ceramic particles显示文摘 | J. Li B.Y. Zong Y.M. Wang W.B. Zhuang | 2010 | Materials Science & Engineering A2010，，29： | 2 |
| 12 | 老年人群中的结肠镜检:在无症状患者中的低风险与低检出率 | Duncan J.E. Sweeney W.B. Trudel J.L. 张红凯 | 2006 | 世界核心医学期刊文摘(胃肠病学分册)2006，0，10： | 2 |
| 13 | Effect of zirconium on the microstructure and mechanical properties of long period stacking ordered Mg 96 Gd 3 Zn 1 alloy显示文摘 | J.S. Zhang W.B. Zhang X.Q. Ruan L.P. Bian W.L. Cheng H.X. Wang C.X. Xu | 2013 | Materials Science & Engineering A2013，，： | 2 |
| 14 | Prospective multicentre randomised controlled trial of early enteral nutrition for patients undergoing major upper gastrointestinal surgical resection显示文摘 | Rachael Barlow Patricia Price Thomas D. Reid Sarah Hunt Geoffrey W.B. Clark Timothy J. Havard Malcolm C.A. Puntis Wyn G. Lewis | 2011 | Clinical Nutrition2011，，5： | 2 |
| 15 | Radiosensitising Nanoparticles as Novel Cancer Therapeutics — Pipe Dream or Realistic Prospect?显示文摘 | J.A. Coulter W.B. Hyland J. Nicol F.J. Currell | 2013 | Clinical Oncology2013，，： | 1 |
| 16 | Lidar Remote Sensing of the Canopy Structure and Biophysical Properties of Douglas-Fir Western Hemlock Forests显示文摘 | M.A. Lefsky W.B. Cohen S.A. Acker G.G. Parker T.A. Spies D. Harding | 1999 | Remote Sensing of Environment1999，，3： | 1 |
| 17 | Investigation in electroless Ni–P–C g (graphite)–SiC composite coating显示文摘 | Y.T. Wu L. Lei B. Shen W.B. Hu | 2005 | Surface & Coatings Technology2005，，1： | 1 |
| 18 | Quantitative and qualitative analyses in near infrared analysis of basic compounds in sugar beet leaf显示文摘 | W.B. Mroczyk K.M. Michalski | 1995 | Computers and Chemistry1995，，3： | 1 |
| 19 | An enterprise collaborative management system - a case study of supplier relationship management显示文摘 | K.L. Choy W.B. Lee Victor Lo | 2004 | Journal of Enterprise Information Management2004，，3： | 1 |
| 20 | Novel carbon-supported Fe-N electrocatalysts synthesized through heat treatment of iron tripyridyl triazine complexes for the PEM fuel cell oxygen reduction reaction显示文摘 | Cicero W.B. Bezerra Lei Zhang Kunchan Lee Hansan Liu Jianlu Zhang Zheng Shi Aldaléa L.B. Marques Edmar P. Marques Shaohong Wu Jiujun Zhang | 2008 | Electrochimica Acta2008，，26： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员