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709篇 您的检索式:作者名="Kumar V B"
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1The role and significance of Magnesium in modern day research-A review显示文摘Magnesium is one of the largely available elements in the earth’s crust. It has a low structural density with high specific strength. This unique material property has forced an increase in the use of magnesium and its alloys in various applications pertaining to industrial sector,automobiles, aerospace and biomedical. Since magnesium is a highly reactive metal, it is prone to higher rate of corrosion as compared to its counterparts. Thus, it is essential to analyze the corrosion behavior of magnesium and its alloys in its applications. An appropriate process is to be followed in the design and development of magnesium alloys which overcome the limitations of magnesium and enhance the desired material properties in accordance to their applications. This review paper summarizes the importance of magnesium and its material properties. The influence of various alloying elements on the mechanical properties of magnesium is reviewed. The broad classification of Mg alloys and their behavioral trends are detailed. The corrosion behavior of magnesium and the influence of corrosion products on the material characteristics of magnesium, in aqueous medium, are discussed. The manufacturing techniques of magnesium alloys along with the secondary techniques are also covered. The various applications and the limitations of magnesium in these applications are covered. A complete section is dedicated towards detailing the recent trends of magnesium(Mg) alloys, i.e., the biodegradable nature and applications of Mg alloys. The influence of biocorrosion on Mg alloys and techniques to overcome it have been deliberated. This paper provides a thorough review on recent developments of magnesium with respect to engineering applications.S V Satya Prasad S B Prasad Kartikey Verma Raghvendra Kumar Mishra Vikas Kumar Subhash Singh 2022Journal of Magnesium and Alloys2022,10,1:11
2Influence of heat treatment on the machinability and corrosion behavior of AZ91 Mg alloy显示文摘In the present study,AZ91 Mg alloy was heat treated at 410℃ for 6,12 and 24 h to investigate the influence of heat treatment on machinability and corrosion behavior.The effect of soaking time on the amount and distribution of Mg 17 Al 12(β-phase)was analyzed under the optical microscope.Microhardness measurements demonstrated the increased hardness with increased heat treatment soaking time,which can be attributed to the solid solution strengthening.The influence of super saturatedα-grains on reducing the cutting force(F z)with respect to increased cutting speed was observed as prominent.The corrosion behavior of the heat treated specimens was studied by conducting electrochemical tests.Surprisingly,corrosion rate of heat treated samples was observed as increased compared with the base material.From the results,it is evident that the machinability of AZ91 Mg alloy can be improved by producing super saturatedα-grains through heat treatment but at the cost of losing corrosion resistance.Swetha Chowdary V Ravikumar Dumpala Anand Kumar S Kondaiah VV Ratna Sunil B 2018Journal of Magnesium and Alloys2018,6,1:7
3Hepatoprotective activity of Hepax-A polyherbal formulation显示文摘Objective:To evaluate the hepatoprotective potential of Hepax,a polyherbal formulation,against three experimentally induced hepatotoxicity models in rats.Methods:Hepatoprotective activity of Hepax was studied against three experimentally induced hepatotoxicity models,namely, carbon tetrachloride(CCl_4),paracetamol and thiocetamide induced hepatotoxicity in rats. Results:Administration of hepatotoxins(CCl_4,paracetamol and thiocetamide) showed significant morphological,biochemical and histological deteriorations in the liver of experimental animals. Pretreatment with Hepax had significant protection against hepatic damage by maintaining the morphological parameters(liver weight and liver weight to organ weight ratio) within normal range and normalizing the elevated levels of biochemical parameters(SGPT,SCOT,ALP and total bilirubin),which were evidently showed in histopathological study.Conclusions:The Hepax has highly significant hepatoprotective effect at 100 and 200 mg/kg,p.o.on the liver of all the three experimental animal models.VC Devaraj B Gopala Krishna GL Viswanatha Jagadish V Kamath Sanjay Kumar 2011Asian Pacific Journal of Tropical Biomedicine2011,1,2:4
4Phytoextraction:the use of plants to remove heavy metals from soils显示文摘NADAN KUMAR P B A DUSHENKOV V MOTTO H 1995Environ Sci Technol1995,29,5:2
5Ramucirumab plus docetaxel versus placebo plus docetaxel for second-line treatment of stage IV non-small-cell lung cancer after disease progression on platinum-based therapy (REVEL): a multicentre, double-blind, randomised phase 3 trial显示文摘Edward B Garon Tudor-Eliade Ciuleanu Oscar Arrieta Kumar Prabhash Konstantinos N Syrigos Tuncay Goksel Keunchil Park Vera Gorbunova Ruben Dario Kowalyszyn Joanna Pikiel Grzegorz Czyzewicz Sergey V Orlov Conrad R Lewanski Michael Thomas Paolo Bidoli Shaker 2014The Lancet2014,,:2
6Objectively determined 10-day African rainfall estimates created for famine early warning systems显示文摘Herman A V B Kumar P A Arkin 1997Int J Remote Sens1997,18,:2
7Phytoremediation:The use of plants to remove heavy metals from soils 显示文摘Nanda - Kumar P B A Dushenkov V Motto H 1995Environmental Science & Technology1995,29,5:2
8Unconstrained correlationfilters显示文摘Mahalanobis A vijaya kumar B V K 1994ApplOpt1994,,17:1
9Graft copolymerization of acrylonitrilc onto Cassia tora gum with eerie ammonium nitrate - nitricaeid as a redox initiator显示文摘Sharma B R Kumar V Soni P L 2003Journal of Applied Polymer Science2003,,1:1
10Cooperative Air and Ground Surveillance显示文摘Groeholsky B Keller J Kumar V 2006IEEE Robotics and Automation Magazine2006,,13:1
11Vascular endothelial growth factor B (VEGF-B) binds to VEGF receptor-1 and regulates plasminogen activator activity in endothelial cells显示文摘Olofsson B Korpelainen E Pepper MS Mandriota SJ Aase K Kumar V 1998Proc Natl Acad Sci USA1998,95,11:1
12Efficient and convenient polyethylene glyeol(PEG)-mediated synthesis of spiro-oxindoles显示文摘Meshram H M Kumar D A Prasad B R V 2010Helvetica Chimica ACTA2010,93,4:1
13Solvent extraction of Hf(IV) from acidic chloride solutions using Cyanex 302显示文摘REDDY B R KUMAR J R RAJA K P REDDY A V 2004Minerals Engineering2004,17,:1
14Application of liquid/sol- id fluidization technique in beneficiation of fines 显示文摘Mukherjee A K Mishra B K Kumar R V 2009International Journal of Mineral Processing2009,92,12:1
15Intensification of nicotinic acid separation using organophosphorous solvating extractants by reactive extraction 显示文摘KUMAR S WASEWAR K L BABU B V 2008Chem Eng Technol2008,31,11:1
16Performance measures for correlation filters 显示文摘Vijaya Kumar B V Hassebrook L 1990APPLIED OPTICS1990,29,20:1
17Endoluminal ultrasonography with reusableprobe: preliminary reusult显示文摘KUMAR P V JOSHI H B TIMONEY A G 2002J Endourol2002,16,:1
18Changes in sleep-wakefulness in the medial preoptic area lesioned rats:role of thermal preference显示文摘Ray B Mallick H N Kumar V M 2005Behav Brain Res2005,158,1:1
19On the design and development of hybrid journal bearings: a review 显示文摘H C Garg H B Sharda V Kumar 2006Tribotest2006,12,1:1
20Rigid nasal en- doscopy in the diagnosis and treatment of epistaxis 显示文摘Kumar M V V Prasad K U R Gowda P R B 2013J Clin Diagn Res2013,7,5:1
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