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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 | Hepatitis C virus infection,microRNA and liver disease progression显示文摘Hepatitis C virus(HCV) is a global health problem with an estimated 170-200 million peoples(approximately3% of world population) are chronically infected worldwide and new infections are predicted to be on rise in coming years. HCV infection remains categorized as a major risk factor for chronic hepatitis,liver cirrhosis and hepatocellular carcinoma worldwide. There has been considerable improvement in our understanding of virus life cycle since,the discovery of HCV two-decades ago.MicroRNAs(miRNAs) are important players in establishment of HCV infection and their propagation in infected hepatocytes. They target crucial host cellular factors needed for productive HCV replication and augmented cell growth.Very first anti-miRNA oligonucleotides,miravirsen has been tested in clinical trial and shown promising results as therapeutic agent in treatment against chronic HCV infection.Deregulated expression of miRNAs has been linked to the pathogenesis associated with HCV infection by controlling signaling pathways such as,proliferation,apoptosis and migration. Circulating miRNAs emerging as growing field in identification of biomarkers in disease progression and their potential as a means of communication between cells inside the liver is an exciting area of research in future.This review focuses on recent studies enforcing the contribution of miRNAs in HCV life cycle and coordinated regulation in HCV mediated liver disease progression. | Shubham Shrivastava Anupam Mukherjee Ratna B Ray | 2013 | World Journal of Hepatology2013，5，9： | 6 |
| 3 | Self-assembling phospholipid filaments显示文摘 | Ratna B R Kan B | 1991 | Nature1991，352，： | 1 |
| 4 | Pressure Induced Structural Transitions in Nanometer Size Particles of PbS 显示文摘 | Qadri S B Yang J Ratna B R | 1996 | Appl Phys Lett1996，69，15： | 1 |
| 5 | Effect of alcohol chain length on tubule formation in 1,2-bis(tricosa-10, 12- diynoyl-sn-glycero-phosphatidylcholine 显示文摘 | Ratna B R Baral-Tosh S Kahn B | 1992 | Chemistry and Physics of Lipids1992，63，： | 1 |
| 6 | Microwave sintering of nanocrystalline WC-12Co: Challenges and perspectives 显示文摘 | RATNA SUNIL B SIVAPRAHASAM D SUBASRI R | 2010 | International Journal of Refractory Metals & Hard Materials2010，28，18： | 1 |
| 7 | Structural and morphological characterization of PbS nanocrystallites synthesized in the bicontinuous cubic phase of a lipid显示文摘 | YANG J P QADRI S B RATNA B R | 1996 | J Phys Chem1996，100，17： | 1 |
| 8 | Mn-doped ZnS nanoparticles as efficient low-voltage cathodoluminescent phosphors显示文摘 | Dinsmore A D Hsu D S Gray H F Qadri S B Tian Y Ratna B R | | 0，，06： | 1 |
| 9 | Liquid crystal elastomers as artificial muscle: Role of sidechain-backbone coupling 显示文摘 | RATNA B R THOMSEN Ⅲ D L KELLER P | 2001 | Proc SPIE2001，4329，： | 1 |
| 10 | Photoluminescent and Electroluminescent Properties of Mn-doped ZnS Nanocrystals 显示文摘 | Yang H Holloway P H Ratna B B | 2003 | Journal of Applied Physics2003，93，1： | 1 |
| 11 | Bitter melon:antagonist to eancer 显示文摘 | Praibha N Ratna B R | 2010 | Pharm Research2010，27，： | 1 |
| 12 | Isotropic-nematic transition in liquid-crystalline elastomers : lattice model with quenched disorder 显示文摘 | SELINGER V RATNA B R | 2004 | Physical Review E2004，70，04： | 1 |
| 13 | Synthesis and characterizationof liquid-crystalline epoxy and its blend with conventional epoxy显示文摘 | Sadagopan K Ratna D Samui A B | 2003 | Journal of Polymer Science Part A:Polymer Chemistry2003，41，21： | 1 |
| 14 | Meta models for variable importance decomposition with applications to probabilis- tie engineering design 显示文摘 | HEMALATHA S RATNA B C | 2009 | Computers & Industrial Engi- neering2009，57，3： | 1 |
| 15 | Synthesis, char- acterization, and evaluation of carboxyl-terminated poly(ethylene glycol) adipate-modified epoxy networks: Effect of molecular weight 显示文摘 | MURALI M RATNA D SAMUI A B | 2007 | J ApplPolymSei2007，103，： | 1 |
| 16 | Suppression of apoptotic cell death by hepatitis C virus core protein显示文摘 | Ratna B R Keith M Ranjit R | 1996 | Virology1996，226，： | 1 |
| 17 | Photoluminescent and electrolumineseent properties of Mmdoped ZnS nanocrystals 显示文摘 | Yang H Holloway P H Ratna B B | 2003 | Journal of Applied Physics2003，93，： | 1 |
| 18 | Photoluminescnt and electroluminescent properties of Mn-doped ZnS nanocrystals 显示文摘 | Yang H Holloway P H Ratna B B | 2003 | Journal of Applied Physics2003，93，： | 1 |
| 19 | Salt Stress Induced Variation in DNA Methylation Pattern and Its Influence on Gene Expression in Contrasting Rice Genotypes显示文摘 | Ratna K Teresa D Hanamareddy B | 2012 | PLosOne2012，7，40： | 1 |
| 20 | Flavonoid content and antioxidant activ- ity of vegetables from Indonesia 显示文摘 | Nufi A Ratna B Dinya S | 2010 | Food Chem2010，121，4： | 1 |
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