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14篇 您的检索式:作者名="M.SINGH"
    题名 作者 年代 出处 被引量
1A comparative corrosion behavior of Mg,AZ31 and AZ91 alloys in 3.5%NaCl solution显示文摘The corrosion behavior of Mg,AZ31 and AZ91 has been evaluated in 3.5%NaCl solution using weight loss,electrochemical polarization and impedance measurements.Corrosion rate derived from the weight losses demonstrated the occurrence of steeply fast corrosion reaction on AZ91 alloy after three hours of immersion,indicating the start of galvanic corrosion.An increase of corrosion rate with immersion time was also observed for AZ31 but with lesser extent than AZ91 alloy.Whereas Mg metals showed a decrease of corrosion rate with immersion time,suggesting the formation of a protective layer on their surfaces.In contrast,the corrosion current density(I_(corr))derived from the Tafel plots,exhibited their corrosion resistances in order of Mg>AZ91>AZ31.Electrochemical charge transfer resistance(R_(ct))and double layer capacitance measured by electrochemical impedance spectroscopy(EIS),are well in accordance with the measured I_(corr).EIS measurements with time and microstructural examination of the corroded and uncorroded samples are helpful in elucidation of results measured by electrochemical polarization.I.B.Singh M.Singh S.Das 2015Journal of Magnesium and Alloys2015,3,2:16
2Gomati河近期沉淀物的重金属污染与人类活动的影响显示文摘在对Gomati河中近期沉淀的表层沉淀物中的多种金属进行了浓度测定(Cr、Cu、Co、Fe、Mn、Ni、Pb、Zn和Cd),发现一些金属浓度(mg/kg)显著增加,其中Cd:0.26~3.62、Cu:33~147、Ni:45~86、Pb:25~77和Zn:90~389。贯穿勒克瑙市区河流中,金属剖面图显示了沿顺流方向浓度增加,这是由于该区4个主要的排水网络排放废水所致。金属污染程度与地区背景值和全球标准进行了比较。河流沉淀物地质累积指标排序为Cd>Zn>Cu>Cr>Pb。并观察发现Cr和Zn、Cr和Cu、Cu和Zn以及沉淀物中总C和Cr、Zn之间有着显著的相关关系。研究揭示了城市化过程与Gomati河沉淀物中高浓度的重金属如Cd、Cu、Cr、Pb和Zn有关。M.Singh A.A.Ansari 盖美 田成诗 1998世界地质1998,17,1:9
3氯离子对9Cr马氏体钢静态腐蚀和应力腐蚀行为的影响显示文摘目的研究9Cr马氏体钢在非服役条件下的腐蚀行为。方法运用传统电化学测试和微区扫描振动电极(SVET)技术研究材料的静态腐蚀行为,采用慢应变速率动态拉伸腐蚀试验与传统电化学测试技术相结合的方法研究材料的应力腐蚀行为。结果获得常温下氯离子对马氏体钢静态腐蚀行为的影响规律,以及慢拉伸过程中材料表面钝化膜生成和破裂过程。结论马氏体钢在氯化钠溶液中的腐蚀为阳极溶解型,且随着氯离子浓度的上升,局部腐蚀电流密度增大。常温下材料在含氯离子环境中发生弹性变形时,表面生成的钝化膜使材料的抗腐蚀性能升高。当材料进入塑性变形阶段后,由于金属表面缺陷的增多、颈缩区体积的收缩,以及钝化膜与基体金属塑性变形能力的差异,钝化膜逐渐溶解并发生破裂。张振 胡正飞 Preet M.Singh 2019表面技术2019,48,12:9
4Anti‐cancer effect of celecoxib and aerosolized docetaxel against human non‐small cell lung cancer cell line, A549显示文摘Suniket V.Fulzele Madhu SudhanShaik AbhijitChatterjee M.Singh 2010Journal of Pharmacy and Pharmacology2010,,3:1
5Generation of VLF Mode Instability by Generalized Distribution Function in the Presence of Parallel AC Electric Field in Uranus显示文摘VLF (very low frequency) mode instability with parallel AC electric field was studiedfor generalized loss-cone distribution with an index j, which is reducible to bi-Maxwellian, lossconeand delta function for j = 0, 1 and ∞. The particle trajectories and dispersion relation areobtained through a kinetic approach and method of characteristic solutions. The calculations arecompared with the observations of low frequency waves of Voyager 2. The growth rate of plasmaparameters suited to magnetosphere of Uranus is obtained. It is inferred that the magnitude aswell as frequency of AC (alternating current) field increases the growth rate and widen the bandwidth significantly. In addition to temperature anisotropy, particles in plasma having generalizedloss-cone distribution provide an additional source of energy.R.S.PANDEY M.SINGH Pramod KUMAR K.M.SINGH S.KUMAR 2010Plasma Science and Technology2010,12,4:1
6小麦基因型的光合作用、叶绿素含量和二磷酸核酮糖羧化酶活性与产量的关系显示文摘K.K.Murthy M.Singh 孙熙年 1981麦类作物学报1981,,02:1
7Association of variants in the IL12B gene with leprosy and tuberculosis显示文摘G.Morahan G.Kaur M.Singh C. C.Rapthap N.Kumar K.Katoch N. K.Mehra D.Huang 2007Tissue Antigens2007,,:1
8微型实验与绿色化学显示文摘来用微型实验,特别是在有机化学实验室里,下列的优点是公认的Z降低实验成本,易界的与剧毒的物质用量减少,反应时间缩短,废弃物处理费用和有关建筑成本降低等等。而在无机化学实验室里,由于一些化学试剂价格昂贵,有毒物的释放和反应时间长等缘故,往往为了安全只好放弃做一些饶有兴趣的实验。此时,若采用微型实验,上述优点就更加突出了。从另一层面看,学术界日益重视的绿色化学也引导使用微型实验的方法。绿色化学的概念在工业上已日渐得到认同,它在教学实验中的应用也应该推广。按照绿色化学的要求,实验室中试剂、溶剂和产物的使用及其数量应符合对人类健康和环境的危害最低的原则。作者在微型实验范畴里开展了绿色无机化学实验室的计划。本文将介绍几个微型无机实验,微型玻璃仪器及其操作和微型实验在全球的发展现状.Zvi Szafran Mono M.Singh Ronald M.Pile 1998杭州师范学院学报1998,28,S1:0
9预测炭黑填充胶料应力松弛性能的一种模式显示文摘1.前言弹性体胶料变形后,基应力随时间的延长逐渐下降,这是应力松弛现象。它在压延、压出加工过程和注塑时的充模均起着非常重要的作用。 Cotton和Boonstra证实,纯橡胶和填充的弹性体(未硫化和硫化)的纵向应变压缩应力松弛符合经验式: S(t)=S1t-b (1)式中S是任一时间t时的压缩应力。S1M.Singh 杨诗钟 1991橡胶参考资料1991,0,2:0
10TOPICALLY EFFECTIVE OPHTHALMIC SOLUTION OF ACETAZOLAMIDE - FU-TURE PERSPECTIVE IN ANTI-GLAUCOMA THERAPY显示文摘Therapeutic agents used to treat glaucoma are designed to decrease the intra-ocular pressure (IOP) either by decreasing the aqueous humor production in the ciliary body and/or by enhancing the aqueous humor drainage from the eye. Oral carbonic an-hydrase inhibitors (CAIs) were the mainstay in the glaucoma therapy but of late, these agents have become less popular dueM.Gogia M.Singh I.P.Kaur 2003国际眼科杂志2003,3,1:0
11选择非终身轨显示文摘"这不只是一个荣耀的博士后职位?""不接受这个职位会影响我获得终身教授职位的机会吗?"当导师向我提供一个从博士后到助理研究科学家——这是我所在机构给非终身教职员工的头衔——的晋升机会时,我问了他这些问题。我即将到第5年了,这是我所在大学允许从事博士后工作的最长时间,所以我需要知道自己接下来将去往何处。我很感激导师的帮助,并且很高兴他想留下我。Amar M.Singh 倪伟波(译) 2018科学新闻2018,0,7:0
12Structural characterization of Nd-doped in silica host matrix prepared by wet chemical process显示文摘Silica host matrix containing neodymium which is potentially important for the formation of nanocrystalline metal oxides was prepared by solgel method, using tetra-ethoxysilane and Nd(NO3)3 as precursor materials.The prepared samples were changed from amorphous to nanocrystallites phase at sintered temperature 550 °C(4 h), 750 °C(8 h) and 950 °C(12 h).The thermally treated sample microstructures were investigated using X-ray diffraction(XRD), Fourier transformation infrared spectroscopy(FTIR), and scanning electron mi-croscopy(SEM).While a further increase of the temperature at 750 °C and annealing time(8 h) resulted in the formation of cubic and hexagonal Nd2O3 nanocrystallites.At constant sintering temperature 950 °C for 12 h, the samples showed sharper and intense peaks.The sizes of Nd2O3 nanocrystallites were characterized by XRD with average size ~46 nm.Surender Duhan Sunita Devi M.Singh 2009Journal of Rare Earths2009,27,1:0
13分光光度法测定二氧化硫显示文摘二氧化硫是一种重要的工业气体和大气污染物,它通常是使用汞盐来测定的。本文作者研究出了一种不用有毒的汞盐来测二氧化硫的方法,即用过量的重铬酸钾溶液与吗啡啉水溶液在酸性介质中相混合做为二氧化硫的吸收液。重铬酸盐中的六价铬被二氧化硫还原成三价,过量的六价铬可用二苯基羰酰二肼测定,生成紫红色最大吸收波为540纳米的可溶性络合物,经还原作用后生成的紫红色络合物,其光度的吸收量在与控制试剂比较时,可发现与还原用的二氧化硫的浓度成正比例地下降。按比尔定律溶液中二氧化硫浓度控制范围为0.4~4μgmL^(-1)D.C.Parashar V.Raman M.Singh 胡文庆 1989黑龙江环境通报1989,,3:0
14ERYTHROPOIETIN/ERYTHROPOIETIN RE-CEPTOR PLAY A ROLE IN ISCHEMIC PRE-CONDITIONING显示文摘Recent studies have demonstrated that treatment with erythro?poietin (EPO) protects the CNS from a variety of insults. The purpose of this study was to examine the relationship between EPO and the phenomena of ischemic pre-conditioning. Transient retinal (HIOP) and cerebral (MCAo) ischemia was induced in the rat. Treatment with EPO resulted in significantD.M.Rosenbaum S.Malhotra S.Nijhawan M.Singh A.Junk A.Steiner P.S.Rosenbaum 2003国际眼科杂志2003,3,1:0
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