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| 1 | Influence 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 | 2018 | Journal of Magnesium and Alloys2018，6，1： | 7 |
| 2 | Biosynthesis of silver nanoparticles by using mangrove plant extract and their potential mosquito larvicidal property显示文摘Objective:To identify the larvicidal activities of silver nano particles synthesised with Rhizophora mucronata(R.mucronata) leaf extract against the larvae of Aedes aegypti(Ae.aegypti) and Culex quinquefasciatus(Cx.quinquefasciatus).Methods:In vitro larvicidal activities such as LC50 and LC90 were assessed for the Ae.aegypti and Cx.quinquefasciatus larval species.Further, characterisation such as UV,XRD,FTIR and AFM analysis were carried out for the synthesised silver nano particles.Results:The LC50 value of the synthesised silver nano particle was identified as 0.585 and 0.891 mgg/L for Ae.aegypti and Cx.quinquefasciatus larvae respectively. Further,the LG90 values are also identified as 2.615 and 6.291 mg/L for Ae.aegypti and Cx. quinquefasciatus species respectively.The synthesised silver nanoparticles have maximum absorption at 420 nm with the average size of 60-95 nm.The XRD data showed 20 intense values with various degrees such as 37.10°,47.66°,63.97°and 70.01°.The FTIR data showed prominent peaks in(3 426.89,2 925.49,2 869.56,2 346.95,1 631.49,1 031.73,669.18 and 455.12) different ranges.Conclusions:The biosynthesis of silver nanoparticles with leaf aqueous extract of R. mucronata provides potential source for the larvicidal activity against mosquito borne diseases. | M Gnanadesigan M Anand S Ravikumar M Maruthupandy V Vijayakumar S Selvam M Dhineshkumar AK Kumaraguru | 2011 | Asian Pacific Journal of Tropical Medicine2011，4，10： | 4 |
| 3 | TCAM architecture for IP lookup using prefix properties显示文摘 | Ravikumar V C Mahapatra R N | 2004 | IEEE Micro2004，24，2： | 2 |
| 4 | Chitin and chi- tosan for versatile applications 显示文摘 | Dutta P K Ravikumar M N V Dutta J | 2002 | Journal of Macromo- lecular Science Part C: Polymer Reviews2002，42，3： | 1 |
| 5 | Synthesis and biologicalevaluation of 2,3-diarylpyrazines and quinoxalines as selective COX-2Inhibitors显示文摘 | Singh S K Saibaba V Ravikumar V | 2004 | Bioorg Med Chem2004，12，8： | 1 |
| 6 | Machine learning approach for automated visual inspection of machine components显示文摘 | RAVIKUMAR S RAMACHANDRAN K I SUGUMARAN V | 2011 | Expert Systems with Applications2011，38，4： | 1 |
| 7 | Peer-to-peer networks for modeling Malware propagation显示文摘 | RAVIKUMAR V RAJANI M | 2012 | International Journal of Advanced Research in Computer Science and Software Engineering2012，2，2： | 1 |
| 8 | EaseCAM: An energy and storage efficient TCAM-based router architecture for IP lookup 显示文摘 | Ravikumar V C Mahapatra Rabi N Bhuyan Laxmi Narayan | 2005 | IEEE Trans on Computers2005，54，5： | 1 |
| 9 | Adaptive particle swarm optimization approach for static and dynamic economic load dispatch显示文摘 | Panigrahi B K Ravikumar Pandi V Das S | 2008 | Energy Conversion and Management2008，49，： | 1 |
| 10 | A Single-Center, Open, Comparative Study of the Effect of Using Self-Monitoring of Blood Glucose to Guide Therapy on Preclinical Atherosclerotic Markers in Type 2 Diabetic Subjects 显示文摘 | Mohan V Ravikumar R Poongothai S | 2010 | J Diabetes Sci Technol2010，4，4： | 1 |
| 11 | Identification of chromium and nickel sites in zinc phosphate glasses显示文摘 | Ravikumar R V S S N Yamauchi J Chandrasekhar A V | 2005 | J Mol Struct2005，740，123： | 1 |
| 12 | Associations of HLA-DRB1,DQB1 and DPB1 alleles with pulmonary tuberculosis in south India显示文摘 | Ravikumar M Dheenadhayalan V Rajaram K | 1999 | Tuber Lung Dis1999，79，5： | 1 |
| 13 | Biodegradable block copolymers 显示文摘 | Kumar N Ravikumar M N V Domb A J | 2001 | Adv Drug Deliv Rev2001，53，1： | 1 |
| 14 | Giant tumour of the pterygopalatine fossa 显示文摘 | SASINDRAN V SRIPRAKASH RAVIKUMAR A | 2008 | Indian J Otolaryngol Head Neck Surg2008，60，： | 1 |
| 15 | Model- ing and simulation of cargo containers 显示文摘 | Sinha S C Prakash V Ravikumar P B | 1989 | Computers & Structures1989，33，4： | 1 |
| 16 | Distorted octahedral sites of Cr3+ doped sodium phosphate glasses显示文摘 | CHANDRASEKHAR A V RAVIKUMAR R V S S REDDY B J | 2002 | Glass Technol2002，43，： | 1 |
| 17 | Electron phosphate resonance and optical absorption spectra of Cr3+ ions in cadmium phosphate glass显示文摘 | RAVIKUMAR R V S S N KOMATSU R KO IKEDA | 2003 | Solid state communications2003，126，： | 1 |
| 18 | Analytical equation for variation of discharge in drip irrigation laterals 显示文摘 | Ravikumar V Ranganathan C R Santhana Bosu S | 2003 | Journal of Irrigation and Drainage Engineering2003，129，4： | 1 |
| 19 | Methanol oxidation on carbon-supported Pt-Sn electrodes in silicotungstic acid 显示文摘 | Arico A S Kim H Shukla A K Ravikumar M K Antonucci V Giordano N | 1994 | Electrochimica Acta1994，39，5： | 1 |
| 20 | The role of coordination and valance states of tungsten ions on some physical properties of Li2 O-Al2 O3-ZrO2-SiO2 glass system显示文摘 | RAO C S RAVIKUMAR V SRIKUMAR T | | 0，，16： | 1 |
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