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Importance of halide perovskites for next generation solar cells – A review
Kalaiselvi, C.R.,Muthukumarasamy, N.,Velauthapillai, Dhayalan,Kang, Misook,Senthil, T.S. Elsevier 2018 Materials letters Vol.219 No.-
<P><B>Abstract</B></P> <P>Halide perovskites have recently emerged as a promising material for low cost and high efficiency solar cells. Dye Sensitized Solar Cells (DSSCs) are the forerunners of perovskite solar cells. In liquid based dye sensitized solar cell the power conversion efficiency is low and also it had some stability issues. In 2012, a long term stable and high efficiency perovskite solar cell emerged by replacing liquid electrolyte with the solid hole conductor. The attractiveness of organometal halide perovskites are having suitable direct bandgap with large absorption coefficients, low cost and solution based fabrication process. This review summarizes the basic concepts of perovskite, their fabrication and its eminent properties.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Importance of organic metal halide perovskite presented clearly. </LI> <LI> The basic concepts of perovskite, fabrication and its eminent properties summarized. </LI> <LI> The effect of hole transporting material to achieve remarkable photovoltaic performance was explained. </LI> </UL> </P>
Embryogenic Callus Induction and Agrobacterium-mediated Transformation in Bentgrass (Agrostis spp.)
Ming Liang Chai,Kalaiselvi Senthil,Suk Yoen Mo(모숙연),Young Soo Chung(정영수),Sung Hyun Cho(조성현),Jeong Sheop Shin(신정섭),Mi Hyea Park(박미혜),Doo Hwan Kim(김두환) 한국원예학회 2000 Horticulture, Environment, and Biotechnology Vol.41 No.5
Neha G. Wasnik,Mahalakshmi. Muthusamy,Savitha Chellappan,Veena Vaidhyanathan,Ramakrishna Pulla,Kalaiselvi Senthil,양덕춘 한국자원식물학회 2009 한국자원식물학회지 Vol.22 No.6
Adventitious root culture was established in the Jawahar variety of Withania somnifera using MS basal medium supplemented with 0.5 (mg/l) IAA and 2.0 (mg/l) IBA. Root tips from germinated seedlings, MS0 maintained plants and adventitious roots were maintained in suspension medium (1/2 MS basal medium supplemented with 3% sucrose) for a period of 1 to 6 months. The weight gain in roots was noted and the withanolides were extracted from the dry roots using solvents petroleum ether, 50% ethanol and chloroform. The withanolides in the chloroform fractions of all root samples analyzed were compared using thin layer chromatographic analysis. Withanolide content in adventitious root sample was found to be superior compared to other roots at any given point of time during the 6month growth period.HPLC analysis of in vitro adventitious roots showed the presence of a new compound.
Maryam Beigomi,Mohammad Amin Mohammadifar,Maryam Hashemi,Mohsen Ghods rohani,Kalaiselvi Senthil,Mohharam Valizadeh 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.6
A protease from Withania coagulans fruits wasevaluated for milk-clotting properties. The optimumtemperature and pH for enzyme activity were 70oC and 4,respectively. The protease also exhibited an excellentthermal stability at 60oC for 30 min. Fractional precipitationusing ammonium sulfate showed that the 40-50% fraction(F5) possessed the highest milk-clotting activity. The F5fraction showed a Mw band of 66 kDa by SDS-PAGE. Gelformation was monitored using low amplitude oscillatoryrheology at different temperatures. An Arrhenius plot wasused to describe the temperature dependence of thegelation rate parameter. Time sweep testing showed that anincrease in temperature was accompanied by a decrease inthe gelation onset time, a higher gel formation rate, andhigher values for final gel strength. W.coagulans fruitshave potential for use as a rennet substitute.
Isolation and Characterization of Calmodulin Gene from Panax ginseng C. A. Meyer
Neha G. Wasnik,Yu-Jin Kim,Se-Hwa Kim,Sathymoorthy S,Rama Krishna Pulla,Shohana Parvin,Kalaiselvi Senthil,Deok Chun Yang 고려인삼학회 2009 Journal of Ginseng Research Vol.33 No.1
Ca<SUP>2+</SUP> and calmodulin (CaM), a key Ca<SUP>2+</SUP> sensor in all eukaryotes, have been implicated for defense responses of plants. Eukaryotic CaM contains four structurally and functionally similar Ca<SUP>2+</SUP> domains named Ⅰ, Ⅱ, Ⅲ and IV. Each Ca<SUP>2+</SUP> binding loop consists of 12 amino acid residues with ligands arranged spatially to satisfy the octahedral symmetry of Ca<SUP>2+</SUP> binding. To investigate the altered gene expression and the role of CaM in ginseng plant defense system, cDNA clone containing a CaM gene, designated PgCaM was isolated and sequenced from Panax ginseng. PgCaM, which has open reading frame of 450 nucleotides predicted to encode a precursor protein of 150 amino acid residues. Its sequence shows high homologies with a number of other CaMs, with more similarity to CaM of Daucus carota (AAQ63461). The expression of PgCaM in different P. ginseng organs was analyzed using real time PCR. The results showed that PgCaM expressed at different levels in young leaves, shoots, and roots of 3-week-old P. ginseng. In addition, the expressions of PgCaM under different abiotic stresses were analyzed at different time intervals.
Nagappan, Arulkumar,Karunanithi, Nithya,Sentrayaperumal, Sundareswaran,Park, Kwang-Ii,Park, Hyeon-Soo,Lee, Do Hoon,Kang, Sang-Rim,Kim, Jin-A,Senthil, Kalaiselvi,Natesan, Senthil,Muthurajan, Raveendran Institute for Advanced Research in Asian Science a 2012 The American journal of Chinese medicine Vol.40 No.1
<P>Ginsenosides and withanolides are the secondary metabolites from Panax ginseng and Withania somnifera, respectively. These compounds have similar biological properties. Two-dimensional electrophoresis (2-DE) analysis was utilized to reveal the protein profile in the roots of both plants, with the aim of clarifying similarly- and differentially-expressed proteins. Total proteins of Korea ginseng (P. ginseng) and Indian ginseng (W. somnifera) roots were separated by 2-DE using a pH 4-7 immobilized pH gradient strip in the first dimension and 12% sodium dodecyl sulfate polyacrylamide gel electrophoresis in the second dimension. The protein spots were visualized by silver staining. Twenty-one P. ginseng proteins and 35 W. somnifera proteins were chosen for identification by matrix-assisted laser desorption/ionization time-of-flight tandem mass spectrometry; of these, functions were ascribed to 14 and 22 of the P. ginseng and W. somnifera proteins, respectively. Functions mainly included general cell metabolism, defense and secondary metabolism. ATPase and alcohol dehydrogenase proteins were expressed in both plants. The results of this study, to our knowledge, are the first to provide a reference 2-DE map for the W. somnifera root proteome, and will aid in the understanding of the expression and functions of proteins in the roots of Korean ginseng and Indian ginseng.</P>