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您的检索式：作者名="Asmita Ghosh"
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| 1 | Electrochemical characterization of Ni-Co and Ni-Co-Fe for oxidation of methyl alcohol fuel with high energetic catalytic surface显示文摘Non Pt based metals and alloys as electrode materials for methyl alcohol fuel cells have been investigated w ith an aim of finding high electrocatalytic surface property for the faster electrode reactions.Electrodes w ere fabricated by electrodeposition on pure Al foil,from an electrolyte of Ni,Co,Fe salts.The optimum condition of electrodeposition w ere found out by a series of experiments,varying the chemistry of the electrolyte,pH valve,temperature,current and cell potential.Polarization study of the coated Ni-Co or Ni-CoFe alloy on pure Al w as found to exhibit high exchange current density,indicating an improved electro catalytic surface w ith faster charge-discharge reactions at anode and cathode and low overvoltage.Electrochemical impedance studies on coated and uncoated surface clearly show ed that the polarization resistance and impedance w ere decreased by Ni-Co or Ni-Co-Fe coating.X-ray diffraction(XRD),energy dispersive X-ray spectroscopy(EDX)and atomic absorption spectroscopy(AAS)studies confirmed the presence of alloying elements and constituents of the alloy.The morphology of the deposits from scanning electron microscope(SEM)images indicated that the electrode surface w as a three dimensional space w hich increased the effective surface area for the electrode reactions to take place. | Subir Paul Sk Naimuddin Asmita Ghosh | 2014 | 燃料化学学报2014，42，1： | 4 |
| 2 | First report on chlorophyllin to protect mammalian and fish muscle cells from pesticide toxicity via activation of p53 and PARP显示文摘Objectives:Pesticide toxicity has become one of the major environmental menaces affecting all types of life forms of the ecosystem.Pesticides get washed off from agricultural fields into nearby water bodies and enter the aquatic organisms.Their bio-accumulated form finally reaches the human race,through consumption of pesticide infested aquatic animals,causing several physiological dysfunctions.Hence it becomes necessary to find a therapeutic cure/a preventive measure to stop the health hazard issues of pesticide.With this projection a search for a phyto-based-product was made whose primary objective would be to lower the pesticidal toxicity in fish and simultaneously in the human race.Methods:In this study we tried to check whether the phyto-chemical,Chlorophyllin(CHL),known for its anti-genotoxic,anti-oxidant activities,could render any kind of protection against Cypermethrin(CM)induced-toxicity in fish model and mammalian cell line L6.Both the model L6 and fish were pre-treated with CHL prior to exposure of CM.Different scientific parameters like%cellular cytotoxicity,reactive oxygen species(ROS)generation,nuclear condensation,etc were checked to validate the possibility of CHL in protecting CM-induced toxicity.Results:The overall results revealed that pre-treatment with CHL could restrict the ROS generation leading to modulation in associated cytokine proteins expression NFkβand IFNγ.Further,CHL lowered nuclear condensation and elevated expression of DNA repair proteins p53 and PARP,showing a kind of pre-activation of signalling cascades for overall protection against the severity of pesticidal toxicity.Conclusion:Thus,this phyto-based preventive approach would possibly solve many areas of human health issues related to pesticide toxicity in future. | Asmita Samadder Swatilekha Das Bakul Pal Sweta Das Anindita Mandal Priyanka Biswas Sujoy Ghosh Shamim Hossain Mandal Priyanka Sow Ruchira Das Souvik Biswas Ashis Kumar Panigrahi | 2021 | Aquaculture and Fisheries2021，6，4： | 0 |
| 3 | Electrochemical characterization of MnO_2 as electrocatalytic energy material for fuel cell electrode显示文摘Development of inexpensive non Pt based high electrocatalytic energy materials is the need of the hour for fuel cell electrode to produce clean alternative green energy from synthesized bio alcohol using biomass. MnO 2,electro synthesized at different current density is found to be well performed electrocatalytic material,comparable to Pt,with higher current density,very lowovervoltage for the electrochemical oxidation of methanol. From EIS study,the polarization resistance of the coated MnO 2is found to be much lowand electrical double layer capacitance is high,the effect increases with increase in current density of electro deposition. XRD,EDX and AAS analysis confirm the M nO 2deposition. The morphology of SEM images exhibits an enhanced 3D effective substrate area,for electro oxidation of the fuel. A fewnano structured grains of the deposited M nO 2is also observed at higher current density. The fact supports that a high energetic inexpensive electro catalytic material has been found for fuel cell electrode to synthesis renewable energy from methanol fuel. | Subir Paul Asmita Ghosh | 2015 | 燃料化学学报2015，43，3： | 0 |
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