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Shailesh N. Sharma

Bio: Shailesh N. Sharma is an academic researcher from National Physical Laboratory. The author has contributed to research in topics: Materials science & Porous silicon. The author has an hindex of 22, co-authored 76 publications receiving 1445 citations. Previous affiliations of Shailesh N. Sharma include Government of India & Indian Association for the Cultivation of Science.


Papers
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TL;DR: In this article, the effect of different solvents on the crystal structures, morphologies, and sizes of Co doped 1D nanostructures was investigated using steady state photoluminescence (P...
Abstract: One dimensional (1D) anatase Co doped TiO2 nanostructures such as nanorods, nanowires, and nanotubes were synthesized by a simple solvothermal method using CoCl2·6H2O as the cobalt source. The effect of the different solvents on the crystal structures, morphologies, and sizes of the Co doped 1D nanostructures was investigated. The doping concentration of the samples primarily depends on the solvents. The X-ray photoelectron spectroscopy studies clearly showed that the Co was incorporated into the TiO2 lattice as Co2+ and oxygen vacancies were created due to the substitution of the Ti4+ ions by Co2+ ions. Optical absorption measurements showed additional absorption bands that are due to the ligand field transitions, 4T1g(4F) → 4T1g(4P) of Co2+ and also due to the transitions from different trap states related to the oxygen vacancies. The effects of the doping concentration on the defect structures and oxygen vacancies of the 1D nanostructures were mainly investigated using steady state photoluminescence (P...

152 citations

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TL;DR: In this paper, expanded graphite-based composite bipolar plates are developed from EG, which is synthesized by chemical intercalation of natural graphite and rapid expansion at high temperature.

121 citations

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TL;DR: Analysis of RNA seq data and results suggested numerous functions of lncRNAs in T. aestivum, and unfolded the opportunities for functional characterization of individual lncRNA in future studies.
Abstract: Long non-coding RNAs (lncRNAs) are a family of regulatory RNAs that play essential role in the various developmental processes and stress responses. Recent advances in sequencing technology and computational methods enabled identification and characterization of lncRNAs in certain plant species, but they are less known in Triticum aestivum (bread wheat). Herein, we analyzed 52 RNA seq data (>30 billion reads) and identified 44,698 lncRNAs in T. aestivum genome, which were characterized in comparison to the coding sequences (mRNAs). Similar to the mRNAs, lncRNAs were also derived from each sub-genome and chromosome, and showed tissue developmental stage specific and differential expression, as well. The modulated expression of lncRNAs during abiotic stresses like heat, drought and salt indicated their putative role in stress response. The co-expression of lncRNAs with vital mRNAs including various transcription factors and enzymes involved in Abscisic acid (ABA) biosynthesis, and gene ontology mapping inferred their regulatory roles in numerous biological processes. A few lncRNAs were predicted as precursor (19 lncRNAs), while some as target mimics (1047 lncRNAs) of known miRNAs involved in various regulatory functions. The results suggested numerous functions of lncRNAs in T. aestivum, and unfolded the opportunities for functional characterization of individual lncRNA in future studies.

98 citations

Journal ArticleDOI
TL;DR: In this article, a mesoporous thin film of tungsten oxide (WO3) at the electrode-electrolyte interface in a peroxotungstate sol in the presence of a structure-directing agent (Triton) at room temperature was analyzed.

82 citations

Journal ArticleDOI
25 Apr 2016-PLOS ONE
TL;DR: The results described various characteristic feature and expression pattern of TaLRK genes, which will pave the way for functional characterization in wheat.
Abstract: Lectin receptor kinases (LRKs) play a critical role in plants during development and stress conditions, but a comprehensive analysis at genome level is still not carried out in Triticum aestivum. Herein, we performed the genome wide identification, characterization and expression analysis of these genes in T. aestivum (TaLRK). In-total 263 TaLRK genes were identified, which were further classified into three groups based on the nature of lectin domain. We identified, two TaLRKs consisted of calcium-dependent lectin (C-LRK), while 84 legume-lectin (L-LRK) and 177 bulb-lectin (B-LRK) domains. The L-LRK and B-LRK genes were distributed throughout the genome of T. aestivum. Most of the TaLRKs were clustered as homologs, which were distributed either in proximity on same chromosome or on homoeologous chromosomes of A, B and D sub-genomes. A total of 9 and 58 duplication events were also predicted in L-LRK and B-LRK, respectively. Phylogenetic analysis indicated conserved evolutionary relationship of homologous and orthologous genes from multiple plant species. Gene ontology analysis indicated TaLRKs role in binding, signaling and receptor activities. Most of the TaLRKs consisted of a trans-membrane domain and predicted to be localized in the plasma-membrane. A diverse expression pattern of TaLRK genes was found in various developmental stages and stress conditions. Some TaLRKs were found to be highly affected during a particular stress, which indicated a specialized role of each LRK gene in a specific stress condition. These results described various characteristic feature and expression pattern of TaLRK genes, which will pave the way for functional characterization in wheat.

65 citations


Cited by
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TL;DR: Transparent conductors (TCs) have a multitude of applications for solar energy utilization and for energy savings, especially in buildings as discussed by the authors, which leads naturally to considerations of spectral selectivity, angular selectivity, and temporal variability of TCs, as covered in three subsequent sections.

1,471 citations

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TL;DR: A general review of nanostructured Tungsten oxides, their properties, methods of synthesis, and a description of how they can be used in unique ways for different applications can be found in this article.
Abstract: Metal oxides are the key ingredients for the development of many advanced functional materials and smart devices. Nanostructuring has emerged as one of the best tools to unlock their full potential. Tungsten oxides (WOx) are unique materials that have been rigorously studied for their chromism, photocatalysis, and sensing capabilities. However, they exhibit further important properties and functionalities that have received relatively little attention in the past. This Feature Article presents a general review of nanostructured WOx, their properties, methods of synthesis, and a description of how they can be used in unique ways for different applications. Tungsten oxides (WOx) are unique functional materials that can be obtained in a vast variety of nanostructured forms. This Feature Article presents a comprehensive review on the properties of WOx that goes beyond chromism and photocatalysis, for which they are usually investigated for. This is followed by a survey of their synthesis methods and implementations for different applications.

1,171 citations

Journal ArticleDOI
TL;DR: In this paper, the authors analyzed 164 previously published A/C, curves for 109 C3 plant species and found that the rate of carboxylation, Vcmax, ranged from 6/umol m~2 s"1 for the coniferous species Picea abies to 194jj,mol m" 2 s" 1 for the agricultural species Beta vulgaris.
Abstract: differences in the assimilation of atmospheric CO2 depends upon differences in the capacities for the biochemical reactions that regulate the gas-exchange process. Quantifying these differences for more than a few species, however, has proven difficult. Therefore, to understand better how species differ in their capacity for CO2 assimilation, a widely used model, capable of partitioning limitations to the activity of ribulose-l,5-W.sphosphate carboxylase-oxygenase, to the rate of ribulose 1,5-tophosphate regeneration via electron transport, and to the rate of triose phosphate utilization was used to analyse 164 previously published A/C, curves for 109 C3 plant species. Based on this analysis, the maximum rate of carboxylation, Vcmax, ranged from 6/umol m~2 s"1 for the coniferous species Picea abies to 194jj,mol m" 2 s"1 for the agricultural species Beta vulgaris, and averaged 64^mol m" 2 s"1 across all species. The maximum rate of electron transport, Jmx, ranged from 17/^mol m~2 s"1 again for Picea abies to 372/j.mol m~2 s"1 for the desert annual Mahastrum rotundifolium, and averaged 134fxmol m~2 s"1 across all species. A strong positive correlation between Vc^x and Jmax indicated that the assimilation of CO2 was regulated in a co-ordinated manner by these two component processes. Of the AjC{ curves analysed, 23 showed either an insensitivity or reversed-sensitivity to increasing CO2 concentration, indicating that CO2 assimilation was limited by the utilization of triose phosphates. The rate of triose phosphate utilization ranged from 4-9/xtnol m" 2 s"1 for the tropical perennial Tabebuia rosea to 20-1 /xmol m~2 s"1 for the weedy annual Xanthium strumarium, and averaged 101 ftmol m" 2 s"1 across all species. Despite what at first glance would appear to be a wide range of estimates for the biochemical capacities that regulate CO2 assimilation, separating these species-specific results into those of broad plant categories revealed that Vcmax and Jmax were in general higher for herbaceous annuals than they were for woody perennials. For annuals, Vc^^ and Jmax averaged 75 and 154ftmol m~2 s"1, while for perennials these same two parameters averaged only 44 and 97/xmol m~2 s"1, respectively. Although these differences between groups may be coincidental, such an observation points to differences between annuals and perennials in either the availability or allocation of resources to the gas-exchange process.

944 citations

Journal ArticleDOI
TL;DR: In this article, the authors present a detailed review of the state-of-the-art for electrochromics and its applications in smart windows and provide ample references to current literature of particular relevance.

801 citations