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6篇 您的检索式:作者名="Rashmi Chauhan"
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1Identification of SNP and InDel variations in the promoter and 5′ untranslated regions of γ-tocopherol methyl transferase(ZmVTE4) affecting higher accumulation of α-tocopherol in maize kernel显示文摘Deficiency of vitamin-E or tocopherol causes neurological and cardiovascular disorders in humans. Though maize kernel is rich in total tocopherol, the level of α-tocopherol possessing the highest vitamin-E activity is low. Mutant allele of ZmVTE4 with deletion of 7 bp and 118 bp (0/0: most favorable haplotype) in 5′UTR and promoter region, respectively significantly enhances α-tocopherol in maize kernel than wild type haplotype (7/118).α- tocopherol estimation in 15 diverse inbreds revealed that mean α-/γ-tocopherol and α-/ total-tocopherol was much higher in genotypes with favorable haplotype (1.51 and 0.41) than unfavorable class (0.19 and 0.13), respectively. However even within favorable class,α- tocopherol ranged from 4.76 to 30.07 μg g 1. Sequence analysis of part of 5′UTR and promoter of ZmVTE4 among the genotypes with favorable haplotype revealed 14 SNPs (SNP1 to SNP14) and eight InDels (InDel1 to InDel8). SNP7 at 606 bp (G to A), and InDels viz., InDel1 (27 bp), InDel4 (27 bp) and InDel8 (14 bp) differentiated low and high α-tocopherol accumulating inbreds with favorable haplotype. Hence the newly identified SNP and InDels in addition to the already reported InDels can be useful in selection of favorable genotypes with higher α-tocopherol in maize.Abhijit Kumar Das Rashmi Chhabra Vignesh Muthusamy Hema Singh Chauhan Rajkumar Uttamrao Zunjare Firoz Hossain 2019The Crop Journal2019,7,4:2
2Optical properties of amorphous thin film of Se-Te-Ag system prepared by using thermal evaporation techniqueMadhu MISHRA Rashmi CHAUHAN Anju KATIYAR K.K.SRIVASTAVA 2011Progress in Natural Science:Materials International2011,21,1:1
3Photo-induced optical changes in Ge_xAs_(40)Se_(60-x) thin filmsRashmi CHAUHAN Amit Kumar SRIVASTAVA Arvind TRIPATHI Krishna Kant SRIVASTAVA 2010Progress in Natural Science:Materials International2010,20,1:1
4Microstructure determination of methyl methacrylate- N-arylsubstituted itaconimide copolymers by NMR spectroscopy 显示文摘RASHMI CHAUHAN VEENA CHOUDHARY 2010Journal of Applied Polymer Science2010,115,1:1
5High-energy ion treatments of amorphous As_(40)Se_(60) thin films for optical applications显示文摘The treatment of 100 MeV Ag swift-heavy ion(SHI) irradiation with five different fluences(3 1010, 1 1011, 3 1011, 1 1012, and3 1012ions/cm2) was used to design optical and structural properties of amorphous(a-) As40Se60 chalcogenide thin films. Swanepoel method was applied on transmission measurements to determine the changes in optical bandgap, Tauc parameter and linear optical parameters, i.e., linear optical absorption, extinction coefficient and linear refractive index. Dispersion of the material was determined by Wemple–DiDomenico relation.Changes in nonlinear optical parameters of third-order optical susceptibility and nonlinear refractive index were determined using semi-empirical relations. Changes in surface morphology of the films were investigated using SEM observation, which indicated that fluence 3 1012ions/cm2was upper threshold limit for these films for ion treatment. It is observed that optical bandgap reduces from 1.76 eV to 1.64 eV, and nonlinear refractive index increases from 1.31 10 10[esu] to 1.74 10 10[esu]. Linear refractive index initially increases from 2.80 to 3.52(for fluence3 1010ions/cm2) and then keeps decreasing. The observed changes in optical properties upon irradiation were explained in terms of structural rearrangements by Raman measurement. The study was compiled with the previous literature to propose SHI as an effective optical engineering technique to achieve desired changes according to the need of optical/photonic applications.Rashmi Chauhan Arvind Tripathi Krishna Kant Srivastava 2014Progress in Natural Science:Materials International2014,24,3:0
6Linear and nonlinear optical changes in amorphous As_2Se_3 thin film upon UV exposureRashmi CHAUHAN Amit Kumar SRIVASTAVA Arvind TRIPATHI Krishna Kant SRIVASTAVA 2011Progress in Natural Science:Materials International2011,21,3:0
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