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Friction Stir Lap Welding of AZ31B and AA6061 Alloys Using Tin as an Inter-Layer
Anil Bandi,Srinivasa R. Bakshi 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.7
The formation of Mg17Al12and Al3Mg2is inevitable even in solid-state joining of Al and Mg alloys by friction stir welding(FSW). In the present study, the effect of a thin inter-layer of Sn (tin) and FSW parameters (pin length and tool rotationspeed) on the microstructure and strength of friction stir lap welds of 3 mm thick AA6061 Al alloy and AZ31B Mg alloysheets was investigated. A ~ 20 μm thick Sn layer was deposited on AZ31B alloy by displacement plating. The heat generatedduring the welding melted the Sn layer and the rotation action of the tool pushed the molten Sn to the hooks on the advancingside and retreating side. The extent of Mg17Al12and Al3Mg2intermetallic compound formation was reduced with Sninter-layer with limited formation of Mg2Sn. The Sn inter-layer helped improve the lap shear strength at lower tool rotationalspeed (600 RPM) and pin lengths of 3.25 and 3.75 mm compared to joints without Sn inter-layer. Lap welds prepared witha 3.25 mm pin at 600 RPM had a lap shear strength of 245 N/mm which is the highest value reported so far and is 116%higher compared to joints without Sn inter-layer. This was due to elimination of hook at the advancing side and retreatingside and disintegration of intermetallic compounds.
ANION INDUCED BLUE TO PURPLE TRANSITION IN BACTERIORHODOPSIN
Singh, Anil K.,Kapil, Mrunalini M. Korean Society of Photoscience 1996 Journal of Photosciences Vol.3 No.2
Anil K. Singh, Mrunalini M. Kapil, Department of Chemistry, Indian Institute of Technology Bombay - 400076, INDIA Purple membrane (PM, $\lambda$$_{max}$ 570 nm) of H. halobium on treatment with sulphuric acid changes its colour to blue ($\lambda$$_{max}$ 608 nm). The purple chromophore can be regenerated from the blue chromophore by exogeneous addition of anions such as CI$^-$ and HPO$_4^{2-}$. Chloride ion is found to be more effective than the dibasic phosphate ion in regenerating the purple chromophore. Nevertheless, one thing common to the anion regeneration is that both CI$^-$ and HPO$_4^{2-}$ show marked pH effect. At pH 1.0 the efficiency of regeneration of the purple chromophore is greater than at pH 2.0, for the same anion concentration. Fluorescence and circular dichroic studies indicate that the proteins do not undergo drastic changes at the secondary' or tertiary structure level and the native structure is preserved during this transition. However, chromophoric-site interactions between retinal and the apoprotein are affected during this colour transition. A molecular mechanism is advanced for this transition.
Pundir, Anil,Kumar, Anil Techno-Press 2014 Advances in energy research Vol.2 No.2
Small Hydro-Power (SHP) is an environmental friendly technology. Usually hydro power generation projects are viewed as constructing large dams and reservoirs but available new research and engineering techniques have helped hydro power generation without large dams and without large reservoirs. In India, there are several water installations, irrigation dams, canals, streams or running rivers not tapped to generate power. In these cases the existing system and facilities can help in generating power with less investment and time. This area is yet unexplored. Harnessing a stream for hydroelectric power is a major undertaking for the energy crises and the global issues to go green. In this technical note a potential site for mini hydro power plant nearby Shoolini University is identified and examined for the economic feasibility.
Anil H. Valekar,Kyung-Ryul Oh,황영규 대한화학회 2021 Bulletin of the Korean Chemical Society Vol.42 No.3
Chemoselective transfer hydrogenation of α,?-unsaturated carbonyl compounds into allylic alcohols over Zr/Hf-based MOF-808.
Transcriptome analysis of rice‑seedling roots under soil–salt stress using RNA‑Seq method
Anil Kumar Nalini Chandran,김정원,유요한,박혜린,김연주,조만호,정기홍 한국식물생명공학회 2019 Plant biotechnology reports Vol.13 No.6
Soil salinity is a major production constrain for agricultural crops, especially in Oryza sativa (rice). Analyzing physiological effect and molecular mechanism under salt stress is key for developing stress-tolerant plants. Roots system has a major role in coping with the osmotic change impacted by salinity and few salt-stress-related transcriptome studies in rice have been previously reported. However, transcriptome data sets using rice roots grown in soil condition are more relevant for further applications, but have not yet been available. The present work analyzed rice root and shoot physiological characteristics in response to salt stress using 250 mM NaCl for different timepoints. Subsequently, we identified that 5 day treatment is criti-cal timepoint for stress response in the specific experimental design. We then generated RNA-Seq-based transcriptome data set with rice roots treated with 250 mM NaCl for 5 days along with untreated controls in soil condition using rice japonica cultivar Chilbo. We identified 447 upregulated genes under salt stress with more than fourfold changes (p value < 0.05, FDR < 0.05) and used qRT-PCR for six genes to confirm their salt-dependent induction patterns. GO-enrichment analysis indicated that carbohydrate and amino-acid metabolic process are significantly affected by the salt stress. MapMan over-view analysis indicated that secondary metabolite-related genes are induced under salt stress. Metabolites profiling analysis confirmed that phenolics and flavonoids accumulate in root under salt stress. We further constructed a functional network consisting of regulatory genes based on predicted protein–protein interactions, suggesting useful regulatory molecular net-work for future applications.
George P. Moschis tribute special issue: His philosophy and contributions
Anil Mathur 한국마케팅과학회 2019 마케팅과학연구 Vol.29 No.4
In this article, I first discuss Moschis’ contributions to marketing in three main areas of consumer behavior: consumer socialization, older consumer behavior, and life course research. Next, I present and comment on the basic characteristics of his work: multi-theoretical, programmatic, and collaborative. Finally, I briefly present the gist of the contribution that is made by each of the articles included in the first part of this two-part special issue that have as foundation his work in the area of life course research.