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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 | Evaluating the effectiveness of marine actinobacterial extract and its mediated titanium dioxide nanoparticles in the degradation of azo dyes显示文摘Aim of the present study was to synthesize titanium dioxide nanoparticles(TiO2 NPs) from marine actinobacteria and to develop an eco-friendly azo-dye degradation method. A total of five actinobacterial isolates were isolated from Chennai marine sediments, Tamilnadu, India and analyzed for the synthesis of TiO2 NPs using titanium hydroxide. Among these, the isolate PSV 3 showed positive results for the synthesis of TiO2 NPs, which was confirmed by UV analysis. Further characterization of the synthesized TiO2 NPs was done using XRD, AFM and FT-IR analysis. Actinobacterial crude extract and synthesized TiO2 NPs was found efficient in degrading azo dye such as Acid Red 79(AR-79) and Acid Red 80(AR-80). Degradation percentage was found to be 81% for AR-79, 83% for AR-80 using actinobacterial crude extract and 84% for AR-79, 85% for AR-80 using TiO2 NPs. Immobilized actinobacterial cells showed 88% for AR-79 and 81% for AR-80, dye degrading capacity. Degraded components were characterized by FT-IR and GC-MS analysis. The phytotoxicity test with 500 μg/mL of untreated dye showed remarkable phenotypic as well as cellular damage to Tagetes erecta plant. Comparatively no such damage was observed on plants by degraded dye components. In biotoxicity assay, treated dyes showed less toxic effect as compared to the untreated dyes. | S Priyaragini S Veena D Swetha L Karthik G Kumar K V Bhaskara Rao | 2014 | Journal of Environmental Sciences2014，26，4： | 4 |
| 3 | Renal cortical necrosis at presentation in a patient with systemic lupus erythematosus: an autopsy case report显示文摘 | Uppin M S Rajasekhar L Swetha H | 2010 | Clin Rheumatol2010，29，7： | 1 |
| 4 | Minimally invasive exposure techniques in spine surgery显示文摘 | Kornelis A Poelstra CT Swetha S | | 0，，03： | 1 |
| 5 | Renal cortical necrosis at presentation in a patient with systemic lupus erythematosus: an autopsy case report 显示文摘 | Uppin M S Rajasekhar L Swetha H | 2010 | Clin Rhe- umatol2010，29，7： | 1 |
| 6 | Reproductive endocrinology offemale crustaceans : perspective and prospective 显示文摘 | Swetha C Sainath S Reddy P | 2011 | J MarineSci Res Development S2011，3，： | 1 |
| 7 | Islet-like cell aggre- gates generatedfrom human adipose tissue derived stem cells ameliorate experimentaldiabetes in mice显示文摘 | Chandra V Swetha G Muthyala S | 2011 | PLoS One2011，6，20： | 1 |
| 8 | Islet-like cell aggregates generated from human adipose tissue derived stem cells ameliorate experimental diabetes in mice显示文摘 | Chandra V Swetha G Muthyala S | | 0，，06： | 1 |
| 9 | a-Amylases from Microbial Sources-An Overview on Recent Developments显示文摘 | Swetha S Dhanya G Kesavan M | 2006 | Food Technol Biotechnol2006，44，： | 1 |
| 10 | Simple and Efficient Method for the Synthesis of Azides in Water-THF Solvent System显示文摘 | Swetha M Ramana P V Shirodkar S G | 2011 | Org Prep Proced lnt2011，43，4： | 1 |
| 11 | Statistical evaluation of the medium components for the production of high biomass, a amylase and protease enzymes by Piriformospora indica using Plaekett Burman experimental design 显示文摘 | Swetha S Varma A Padmavathi T | 2014 | Biotech2014，4，： | 1 |
| 12 | α-Amylases from micro-bial sources-an overview on recent developments显示文摘 | Swetha S Dhanya G Kesavan M N | 2006 | FoodTechnol Biotechnol2006，44，2： | 1 |
| 13 | Primary cutane-ous aspergillosis due to Aspergillus niger in an immuno-competent patient显示文摘 | Mohapatra S Xess I Swetha JV | 2009 | Indian J Med Microbiol2009，27，4： | 1 |
| 14 | Synthesis andcomparative study of nano-Ti02 over Degussa P-25 in disinfectionof water显示文摘 | Swetha S Santhosh SM Geetha Balakrishna R | 2010 | Photochem Photobiol2010，86，3： | 1 |
| 15 | a-amylases from microbial sources显示文摘 | SWETHA S DHANYA G KESAVAN M | 2006 | Food Teehnol Biotechnol2006，44，2： | 1 |
| 16 | Alpha amylase production by Aspergillus oryzae employing solid-state fermentation显示文摘 | Swetha S Dhanya G Kesavan M N | 2007 | Journal of Scientific and Industrial Research2007，66，： | 1 |
| 17 | Ru(DMSO)4CI2 nano-aggregated Nafion membrane modified electrode for simultaneous electrochemical detection of hypoxanthine, xanthine and uric acid显示文摘 | KUMAR A S SWETHA P | 2010 | J Electroanal Chern2010，642，2： | 1 |
| 18 | α-Amylases from microbial sources-an overview on recent developments显示文摘 | Swetha S Dhanya G Kesavan M N | 2006 | Food Technol Biotechnol2006，44，2： | 1 |
| 19 | Hepatopancreas but not ovary is the site of vitellogenin synthesis in female fresh water crab, Oziothelphusa senex senex 显示文摘 | Girish B P Swetha C H Reddy P S | 2014 | Biochemical and Biophysical Research Communications2014，447，2： | 1 |
| 20 | Response surface methodology for the optimization of al- pha amylase production by Bacillus amyloliquefaciens 显示文摘 | DHANYA G SWETHA S MADHAVAN N K | 2008 | Bioresource Technology2008，99，11： | 1 |
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