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| 1 | 肾脏病变:对比扩散加权成像与对比增强MRI的病变特征显示文摘目的以MRI随访检查和组织病理学分析结果作为参照标准,比较扩散加权MRI与对比增强MRI对肾脏病变的诊断效能,并评价两者结合的诊断效能。方法机构审查委员会批准本项研究,不需病人知情同意,因其为符合HIPAA标准的回顾性研究。应用对比增强MRI和不同b值下屏气DWI评价64例病人(男46例,女18例,平均年龄60.7岁)的109个肾脏病灶。采用对比增强MRI判断标准评估肾脏病变特征,测量表观扩散系数(ADC)值。 | B. Taouli R.K. Thakur L. Mannelli J.S. Babb S. Kim E.M. Hecht 龙淼淼(译) 季倩(校) | 2009 | 国际医学放射学杂志2009，32，4： | 32 |
| 2 | Effect of Post Heat Treatment on Corrosion Resistance of Phytic Acid Conversion Coated Magnesium显示文摘An environment friendly chemical conversion coating for magnesium was obtained by using a phytic acid solution. The effect of post-coating 1heat treatment on the microstructures and corrosion properties of phytic acid conversion coated magnesium was investigated. It was observed that the microstructure and corrosion resistive properties were improved for the heat treated samples. The corrosion current density for bare magnesium, phytic acid conversion coated magnesium, and post-coating heat treated magnesium was calculated to be 2.48×105 , 1.18×106 , and 9.27×107 A/cm2 , respectively. The lowest corrosion current density for the heat treated sample indicated its highest corrosion resistive effect for the magnesium. The maximum corrosion protective nature of the heat treated sample was further confirmed by the largest value of impedance in electrochemical impedance spectroscopy studies. | R.K. Gupta K. Mensah-Darkwa D. Kumar | 2013 | Journal of Materials Science & Technology2013，29，2： | 10 |
| 3 | A study of local amplification effect of soil layers on ground motion in the Kathmandu Valley using microtremor analysis显示文摘Past researchers have anticipated the occurrence of a great earthquake in the central Himalayas in the near future.This may cause serious damage in the Kathmandu Valley,which sits on an ancient lake bed zone,with lacustrine sediments of more than 500 m depth.In this study,the predominant frequency of ground motion is evaluated using the Horizontal-to-Vertical(H/V) spectral ratio technique and recordings of ambient noise.The results of the H/V ratio show two peaks in about 20 percent of the locations,which are distributed mainly in and around the center and northern part of the Kathmandu Valley.The predominant frequencies vary from 0.5 Hz to 8.9 Hz in the study area,whereas the second resonance frequency varies from 4 Hz to 6 Hz in the center and northern part of the valley.This indicates that the center and northern part of the valley have a wide range of resonance frequency due to two levels of impedance contrast one may be from the surface layer and the other may be from the layer underneath.These two levels of resonance indicate the importance of considering the effects of surface and lower layers during the planning and designing of infrastructures in the Kathmandu Valley. | Paudyal Y.R. Yatabe R. Bhandary N.P. Dahal R.K. | 2012 | Earthquake Engineering and Engineering Vibration2012，11，2： | 7 |
| 4 | Sarcastic sentiment detection in tweets streamed in real time: a big data approach显示文摘 | S.K. Bharti B. Vachha R.K. Pradhan K.S. Babu S.K. Jena | 2016 | Digital Communications and Networks2016，2，3： | 6 |
| 5 | 与土石坝有关的地震问题显示文摘土石坝对地震震动较为敏感。不同强度的地震, 会对土石坝造成不同程度的危害。介绍地震造成工程失事、大坝安全方面的各种问题, 并提出了有关抗震预防措施。 | K.维克塔乔姆R.K.基特里亚 李会中 傅湘宁 | 1999 | 水利水电快报1999，20，22： | 4 |
| 6 | 工业生产粉尘爆炸预防和缓解──近期研究与发展综述显示文摘本文包括三个方面,即工业粉爆的基础研究、应用研究以及粉尘点人性和可爆性。基础研究包括粉尘云的形成和点火,火焰的传播以及粉煤产生的冲击波。工业预防措施包括惰化和消除点火源。缓解的方法包括隔爆、泄爆、部分惰化、抑爆和全封闭。基础研究和应用研究相互促进。计算机模拟模型可能成为非常有效的方法,也可用于专家系统。 | R.K.耳克霍夫 | 1995 | 中国安全科学学报1995，5，3： | 4 |
| 7 | Transmission Electron Microscopy Study of the Infrared Brazed High-strength Titanium Alloy显示文摘The transmission electron microscopy was employed to investigate the microstructure of infrared brazed highstrength Ti alloy using the Ti-15Cu-15Ni filler metal. Coarse primary Ti2Ni and transformed β-Ti are observed in the 300 s brazed specimen. Blocky Ti2Ni and eutectoid Ti2Cu intermetallics are disappeared from the joint with increasing the brazing time to 1800 s. Both acicular α-Ti and retained β-Ti dominate the entire brazed joint. | Z.Y. Wu R.K. Shiue C.S. Chang | 2010 | Journal of Materials Science & Technology2010，26，4： | 3 |
| 8 | Fluorescence as a potential monitoring tool for recycled water systems: A review显示文摘 | R.K. Henderson A. Baker K.R. Murphy A. Hambly R.M. Stuetz S.J. Khan | 2008 | Water Research2008，，4： | 3 |
| 9 | A review of dengue as an emerging disease in Pakistan显示文摘 | S.B. Rasheed R.K. Butlin M. Boots | 2012 | Public Health2012，，： | 3 |
| 10 | Seasonal Inhomogeneity of Soot Particles over the Central Indo-Gangetic Plains,India:Influence of Meteorology显示文摘Black carbon(BC) particles play a unique and important role in earth's climate system.BC was measured(in-situ) in the central part of the Indo-Gangetic Plains(IGP) at Varanasi,which is a highly populated and polluted region due to its topography and extensive emission sources.The annual mean BC mass concentration was 8.92 ± 7.0 μg m^(-3),with 34%of samples exceeding the average value.Seasonally,BC was highest during the post-monsoon and winter periods(approximately 18 μg m^(-3)) and lower in the premonsoon/monsoon seasons(approximately 6 μg m^(-3)).The highest frequency(approximately 46%) observed for BC mass was in the interval from 5 to 10 μg m^(-3).However,during the post-monsoon season,the most common values(approximately 23%) were between 20 and 25 μg m^(-3).The nighttime concentrations of BC were approximately twice as much as the daytime values because of lower boundary layer heights at nighttime.The Angstrom exponent was significantly positively correlated(0.55) with ground-level BC concentrations,indicating the impact of BC on the columnar aerosol properties.The estimated mean absorption Angstrom exponent was 1.02 ± 0.08 μg m^(-3),indicating that the major source of BC was from fossil fuel combustion.Significant negative correlations between BC mass and meteorological parameters indicate a pronounced effect of atmospheric dynamics on the BC mass in this region.The highest mean BC mass concentration(18.1 ± 6.9 μg m^(-3)) as a function of wind speed was under calm wind conditions(38%of the time). | SINGH B.P. TIWARI S. HOPKE Philip K. SINGH R.S. BISHT D.S. SRIVASTAVA A.K. SINGH R.K. DUMKA U.C. SINGH A.K. RAI B.N. SRIVASTAVA Manoj K. | 2015 | Journal of Meteorological Research2015，29，6： | 3 |
| 11 | 露天开采中的汽车运输和胶带运输显示文摘本文简要地评述了露天开采中汽车运输工作的现状。近年来汽车运输出现了许多有意义的进展,其中包括使用大型汽车、机械驱动装置、汽车调度、故障和性能监测装置等,它们可提高运输效率、降低运输成本。然而,由于汽车运输费用高,特别是从深凹采场驶向高位卸载点时更为严重。因此,其它一些替代汽车的运输方式正在被认真研究,特别是胶带运输方式。本文将讨论露天开采中胶带机的应用以及与之配套的采场破碎工作。 | R.K.辛格 云庆夏 | 1990 | 国外金属矿山1990，，2： | 3 |
| 12 | Spectroscopic investigations and luminescence spectra of Sm3+ doped soda lime silicate glasses显示文摘Sm3+ doped soda lime silicate glasses co-doped with As2O3 were prepared and characterised by measuring their absorption spectra in UV-VIS/NIR regions and luminescence spectra in the visible region. Judd-Ofelt intensity parameters, Ωλ, were evaluated from the measured intensifies of the various absorption bands. Ωλ parameters of these glasses were compared with the Ωλ parameters of other reported Sm3+ glasses to study the bonding environment surrounding the Sm3+ in the present glasses. Presence of [AsO4]3- tetrahedra in the second coordination sphere around the central Sm3+ ion made these glasses less covalent as compared to other oxide glasses but the ratio Ω4/Ω6 of the~1.83 indicated them to be fairly stable. With the help of Ωλ parameters and luminescence data for various emission lines, radiative properties for different emission lines were calculated. The values of radiative properties indicated that 4G5/2→6H7/2 and 4G5/2→6H9/2 transitions responsible for orange luminescence might be used in the development of materials for LED's and other optical devices in the visible region. | Y.K. Sharma S.S.L. Surana R.K. Singh | 2009 | Journal of Rare Earths2009，27，5： | 3 |
| 13 | In vitro degradation and mechanical integrity of calcium-containing magnesium alloys in modified-simulated body fluid显示文摘 | M. Bobby Kannan R.K. Singh Raman | 2008 | Biomaterials2008，，15： | 2 |
| 14 | Precipitation behavior and texture formation at different stages of processing in an interstitial free high strength steel显示文摘 | P. Ghosh C. Ghosh R.K. Ray D. Bhattacharjee | 2008 | Scripta Materialia2008，，3： | 2 |
| 15 | Barium borosilicate glass – a potential matrix for immobilization of sulfate bearing high-level radioactive liquid waste显示文摘 | C.P. Kaushik R.K. Mishra P. Sengupta Amar Kumar D. Das G.B. Kale Kanwar Raj | 2006 | Journal of Nuclear Materials2006，，2： | 2 |
| 16 | Effectiveness–thermal resistance method for heat exchanger design and analysis显示文摘 | Z.Y. Guo X.B. Liu W.Q. Tao R.K. Shah | 2010 | International Journal of Heat and Mass Transfer2010，，13： | 2 |
| 17 | Sensitivity of evapotranspiration to global warming: a case study of arid zone of Rajasthan (India)显示文摘 | R.K. Goyal | 2004 | Agricultural Water Management2004，，1： | 2 |
| 18 | Resection margin in patients undergoing hepatectomy for colorectal liver metastasis: A critical appraisal of the 1cm rule显示文摘 | Z.Z.R. Hamady I.C. Cameron J. Wyatt R.K. Prasad G.J. Toogood J.P.A. Lodge | 2006 | European Journal of Surgical Oncology2006，，5： | 2 |
| 19 | Molecular fingerprinting of hybrids and assessment of genetic purity of hybrid seeds in rice using microsatellite markers显示文摘 | N. Nandakumar A.K. Singh R.K. Sharma T. Mohapatra K.V. Prabhu F.U. Zaman | 2004 | Euphytica2004，，3： | 2 |
| 20 | 古尔胶对闪锌矿和方铅矿浮选的影响显示文摘根据吸附量测定、电动电位测量和浮选试验研究了古尔胶与闪锌矿和方铅矿的相互作用。古尔胶在矿物表面上的最大吸附量发生在 :闪锌矿 pH =7.5和方铅矿 pH =11.5。古尔胶在方铅矿上的吸附密度比在闪锌矿上的高。古尔胶在这两种矿物上的吸附等温线具有朗格缪尔特性。随古尔胶浓度升高 ,方铅矿和闪锌矿的电泳迁移率变负 ,而等电点未偏移。有古尔胶存在情况下 ,在 pH 12时 ,方铅矿的回收率降低 2 0 % ,在 pH =8-12 ,闪锌矿仅稍稍受到抑制 ,验证了吸附试验结果。pH =12时浮选试验表明 ,用古尔胶作为方铅矿的抑制剂可从方铅矿中分离出闪锌矿。溶解试验证实了闪锌矿和方铅矿上的金属离子的溶解 ,共沉淀试验证实了溶液中聚合物与金属离子的相互作用。因此 。 | R.K.拉斯 赵勇 | 2000 | 国外金属矿选矿2000，37，4： | 2 |
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