|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Microstructure and texture evolution in AZ31 magnesium alloy during caliber rolling at different temperatures显示文摘Magnesium alloy AZ31 was caliber rolled at different temperatures viz.523K,573K,623K,673K and 723K imposing a total cumulative reduction of 92%and a cumulative strain of 2.6.The associated microstructure and texture evolution were studied using Electron Back Scattered Diffraction(EBSD)and X-ray macro-texture observations respectively.Grain refinement was observed in all the caliber rolled bars indicating the occurrence of dynamic recrystallization.Asymmetry parameter and texture index were used to study the evolution of texture.Near doubling of the yield strength at room temperature was observed by caliber rolling at a temperature of 573K.The improvement in mechanical properties was explained on the basis of the fine grain microstructures and suitable development of crystallographic texture.Based on the present study,warm caliber rolling can be used as a good production method for obtaining long bars of high strength magnesium alloy AZ31. | Abhishek Tripathi S.V.S.Narayana Murty P.Ramesh Narayanan | 2017 | Journal of Magnesium and Alloys2017，5，3： | 7 |
| 2 | Synthesis, characterization and biocompatibility studies of zinc oxide(ZnO) nanorods for biomedical application显示文摘Nanoparticles are increasingly being recognized for their potential utility in biological applications including nanomedicine.Here,we have synthesized zinc oxide(ZnO)nanorods using zinc acetate and hexamethylenetetramine as precursors followed by characterizing using X-ray diffraction,fourier transform infrared spectroscopy,scanning electron microscopy and transmission electron microscopy.The growth of synthesized zinc oxide nanorods was found to be very close to its hexagonal nature,which is confirmed by X-ray diffraction.The nanorod was grown perpendicular to the long-axis and grew along the[001]direction,which is the nature of ZnO growth.The morphology of synthesized ZnO nanorods from the individual crystalline nucleus was confirmed by scanning and transmission electron microscopy.The length of the nanorod was estimated to be around 21 nm in diameter and 50 nm in length.Our toxicology studies showed that synthesized ZnO nanorods exposure on hela cells has no significant induction of oxidative stress or cell death even in higher concentration(10μg/ml).The results suggest that ZnO nanorods might be a safer nanomaterial for biological applications. | R.Gopikrishnan K.Zhang P.Ravichandran S.Baluchamy V.Ramesh S.Biradar P.Ramesh J.Pradhan J.C.Hall A.K.Pradhan G.T.Ramesh | 2010 | Nano-Micro Letters2010，2，1： | 3 |
| 3 | Ultra-thin polarization independent broadband terahertz metamaterial absorber显示文摘In this work,we present the design of a polarization independent broadband absorber in the terahertz(THz)frequency range using a metasurface resonator.The absorber comprises of three layers,of which,the top layer is made of a vanadium dioxide(VO_(2))resonator with an electrical conductivity of a=200000 S/m;the bottom layer consists of a planar layer made of gold metal,and a dielectric layer is sandwiched between these two layers.The optimized absorber exhibits absorption greater than 90%from 2.54-5.54 THz.Thus,the corresponding bandwidth of the designed absorber is 3 THz.Further,the thermal tunable absorption and reflection spectra have been analyzed by varying the electrical conductivity of VO_(2).The impact of the various geometrical parameters on the absorption characteristics has also been assessed.The physics of generation of broadband absorption of the proposed device has been explored using field analysis.Finally,the absorption characteristics of the unit cell has been studied for various incident and polarization angles. | C.GANDHI P.RAMESH BABU K.SENTHILNATHAN | 2021 | Frontiers of Optoelectronics2021，14，3： | 1 |
| 4 | Hopf bifurcation and synchronisation of afractional-order butterfly-fish chaotic system显示文摘Our aim is to study the Hopf bifurcation and synchronisation of a fractional-order butterfly-fishchaotic system. First, we derived the existence of a chaotic attractor in the fractional-order systemand also synchronisation problem between two identical fractional-order chaotic systems isstudied. Also, control design for the synchronisation with a suitable linear controller is tested inthe response system. Finally, numerical simulation results are provided to confirm the theoreticalanalysis. | P.Ramesh M.Sambath K.Balachandran | 2022 | Journal of Control and Decision2022，9，1： | 1 |
| 5 | Al-Cu-Li合金AA2195在低应变速率和3.5%NaCl溶液中的抗裂性能显示文摘研究Al-Cu-Li合金AA2195在3.5% NaCl环境中的耐蚀和抗裂性能,并将其与另一高强合金AA2219进行比较。采用浸泡腐蚀和恒电位极化实验测定合金的总耐蚀性能;采用低应变速率测试法确定合金的应力腐蚀开裂(SCC)性能。利用SEM-EDS和光学测量技术对合金样品进行表征以研究其腐蚀形貌、元素含量和腐蚀深度的变化。用韧性的减少量作为估算合金应力腐蚀开裂(SCC)敏感性的一个参数。结果表明,由于较低的腐蚀速率、较小的腐蚀深度和宽度,AA2195合金比AA2219合金具有更好的耐蚀性能。然而,两种合金的SCC参数(ε_(NaCl)/ε_(air))均大于0.90,说明此两种合金均具有较好的抗裂性能。断裂样品的SEM-EDS结果表明,两种合金均为典型的脆性断裂形貌。 | R.GHOSH A.VENUGOPAL P.RAMESH NARAYANAN S.C.SHARMA P.V.VENKITAKRISHNAN | 2017 | Transactions of Nonferrous Metals Society of China2017，27，2： | 0 |
| 6 | 自交联的氯化天然橡胶和羧化丁腈橡胶共混胶显示文摘1 前言由于不同类型的功能活性聚合物的开发,聚合物-聚合物的反应显得越来越重要。分子链间的反应导致交联结构的形成。两种不同的功能活性聚合物可在高温下相互反应而形成自交联的聚合物共混体。De及其同事最近研制出几种这样的共混体,即“自硫化的橡胶共混胶”,其中在无任何外加交联剂的情况下。 | P.Ramesh S.K.De 李九玉 | 1992 | 橡胶参考资料1992，，11： | 0 |
| 7 | Novel Contiguous Cross Propagation Neural Network Built CAD for Lung Cancer显示文摘The present progress of visual-based detection of the diseased area of a malady plays an essential part in the medicalfield.In that case,the image proces-sing is performed to improve the image data,wherein it inhibits unintended dis-tortion of image features or it enhances further processing in various applications andfields.This helps to show better results especially for diagnosing diseases.Of late the early prediction of cancer is necessary to prevent disease-causing pro-blems.This work is proposed to identify lung cancer using lung computed tomo-graphy(CT)scan images.It helps to identify cancer cells’affected areas.In the present work,the original input image from Lung Image Database Consortium(LIDC)typically suffers from noise problems.To overcome this,the Gaborfilter used for image processing is highly enhanced.In the next stage,the Spherical Iterative Refinement Clustering(SIRC)algorithm identifies cancer-suspected areas on the CT scan image.This approach can help radiologists and medical experts recognize cancer diseases and syndromes so that serious progress can be avoided in the early stages.These new methods help to remove unwanted por-tions of the CT image and better utilization the image.The subspace extraction of features approach is beneficial for evaluating lung cancer.This paper introduces a novel approach called Contiguous Cross Propagation Neural Network that tends to locate regions afflicted by lung cancer using CT scan pictures(CCPNN).By using the feature values from the fourth step of the procedure,the proposed CCPNN tends to categorize the lesion in the lung nodular site.The efficiency of the suggested CCPNN approach is evaluated using classification metrics such as recall(%),precision(%),F-measure(percent),and accuracy(%).Finally,the incorrect classification ratios are determined to compare the trained networks’effectiveness,through these parameters of CCPNN,it obtains the outstanding per-formance of 98.06%and it has provided the lowest false ratio of 1.8%. | A.Alice Blessie P.Ramesh | 2023 | Computer Systems Science & Engineering2023，44，2： | 0 |
| 8 | 鞣制工段酶的使用研究:PartⅡ.植鞣吸收动力学显示文摘研究了细菌胶原酶作为助剂在鞣制系统中的作用,细菌胶原酶的使用能够使单宁更好地向皮内渗透,提升坯革对单宁的吸收率。对不同浓度细菌胶原酶预处理过的坯革的鞣制动力学进行了研究,得到了鞣制过程中坯革对单宁的等温吸收曲线和不同经验公式(Parabolic公式、Cegarra—Puente公式以及修正后的Cegarra—Puente公式)的拟合曲线。结果表明修正后的Cegarra—Puente公式与实验所得数据拟合程度最好,用该公式计算出的吸收速率常数表明,酶助鞣工艺比对照组有更高的速率常数以及更快的吸收动力学。和对照组相比,不同温度条件下的酶处理均会使单宁的吸收率和吸收速率常数明显提高,而且酶处理后坯革的表面活化能明显降低,由Arrhenius公式得出,酶助鞣工艺与对照组相比坯革表面活化能降低了60%。 | Swarna V.Kanth P.Ramesh Kannan N.Usharani G.C.Jayakumar S.Deepa B.Chandrasekaran 胡杨(编译) 吕绪庸(校) | 2010 | 北京皮革(中外鞋讯)(下)2010，，9： | 0 |
| 9 | Regolith Geochemical Studies in Kimberlitic Terrain: A Case Study from Lattavaram Kimberlite Cluster, Eastern Dharwar Craton, Southern India显示文摘Utility of geochemistry in mineral exploration is known since more than half-a-century.In reconnaissance diamond exploration,regolith geochemistry is a well known tool worldwide and helps in distinguishing | P.Ramesh CHANDRA PHANI M.SRINIVAS | 2016 | Acta Geologica Sinica(English Edition)2016，90，S1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员