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- 저자 : Singh Himani (검색결과 3 건)
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Singh Himani,Niharika,Lamichhane Pradeep,Gupta Ravi,Kaushik Neha,최은하,Kaushik Nagendra Kumar 한국식물생명공학회 2023 Plant biotechnology reports Vol.17 No.6
Pesticides have been an integral part of modern agriculture as their use ensures good harvests. However, excessive use of pesticides in the last few decades has caused significant environmental degradation. Moreover, excessive use of pesticides causes stress on crops and non-target plants and exhibits toxicity to other organisms including mammals, microbes, and insects. Plants employ various morphological, physiological, and biochemical mechanisms to reduce pesticides toxicity. One such mechanism is production of secondary metabolites that improves stress tolerance of plants. In addition, recent studies have also highlighted a potential role of plasma technology in mitigating various abiotic and biotic environmental stresses. Besides, plasma treatment improves seed germination, physiological processes, and seedling establishment during the early growth stages of a plant under adverse and non-adverse conditions and thus can be used an alternate to the pesticide treatment. This review article summarizes recent advancements in understanding the synthesis, accumulation, and transportation of secondary metabolites which have significant relevance to crop improvement programs. We also present an overview of the effects of plasma treatment on phytopathogenic bacterial cell suspensions and plant responses to metabolic activity. In the future, researchers need to develop innovative ideas to reduce the use of chemical pesticides in farming practices.
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Liton Balo,Himani Gupta,Shishir Kumar Singh,Varun Kumar Singh,Shalu Kataria,Rajendra Kumar Singh 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.65 No.-
Flexible gel polymer electrolytes based on polymer polyethylene oxide, salt lithium bis(fluorosulfonyl)imide and ionic liquid 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)imide are synthesized. Prepared samples show high thermal stability, high ionic conductivity at room temperature and an electrochemical stability window of ∼3.51 V vs. Li/Li+. Lithium deposition-striping voltage profiles show the formation of a stable solid electrolyte interface. A Li/GPE/LiFePO4 cell was assembled by low cost thermal lamination technique. This cell can deliver 143 mAh g−1 capacity at room temperature at C/20 rate with good discharge efficiency. Use of micro grid mesh type Al current collector in cathode exhibits significant improvement in capacity retention.
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Himani Negi,Sundram Sharma,Raj K. Singh 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.104 No.-
The deposition of paraffin on the pipeline surface during crude oil transportation is a significant issue foroil industries. In this regard, the demand for adequate methods of wax deposition has gained considerableattention. In the current work, five cellulose esters were synthesized with varied chain short/longand linear/branched in a homogeneous medium and characterized by various analytical techniques. The ability of all cellulose esters to change wax crystal’s structure and pour-point and yield stress reductionwas observed by cross-polarized microscope, pour-point measurement, differential scanningcalorimetry, and rheology. It was noticed that the paraffin crystallization temperature and pour-pointhad decreased significantly with long/linear side chain esters. The efficiency to reduce yield stress wasfound to correlate with the nature of the side chain. Long/linear side chain esters with 0.3 wt% are moreeffective in stabilizing the paraffin/asphaltene gel formation, thereby improving the flowability of waxyoil. The computational calculations also support all the findings at a molecular level.
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