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Biswas, S.K.,Baeg, J.O. Pergamon Press ; Elsevier Science Ltd 2013 International journal of hydrogen energy Vol.38 No.34
Herein, we report the preparation, characterization and investigation of previously unexplored W incorporated iron vanadate (FeVO<SUB>4</SUB>) electrodes for solar light driven water oxidation in photoelectrochemical cell. The W incorporated FeVO<SUB>4</SUB> films on F-doped SnO<SUB>2</SUB> substrates have been prepared by layer-by-layer deposition of metal-organic precursor and subsequent thermal decomposition at 550 <SUP>o</SUP>C in air. The synthesized films with a band gap of about 2.06 eV are responsive to visible light up to wavelength of ~600 nm, i.e. being able to harvest ~45% of the solar spectrum. The W incorporated FeVO<SUB>4</SUB> photoanodes are active materials for photoelectrochemical water oxidation and, yield a significantly enhanced (2.5 fold higher) photocurrent in comparison to pristine FeVO<SUB>4</SUB> photoanodes. This improvement can be attributed to increased n-type conductivity by W<SUP>6+</SUP> ion doping in the FeVO<SUB>4</SUB> lattice. The incident photon to current conversion efficiency achieved with developed photoanodes is as high as 6.5% at 400 nm.
Biswas, Tanmay,Datta, Sanjib Kumar,Shaikh, Jinarul Haque Korean Mathematical Society 2016 대한수학회논문집 Vol.31 No.4
The object of the present paper is to obtain new estimates about the (p, q)-th lower order and (p, q)-th weak type of entire functions under some interesting conditions.
GENERALIZED RELATIVE ORDER-DEPENDENT GROWTHS OF COMPOSITE ENTIRE FUNCTIONS
Biswas, Tanmay,Datta, Sanjib Kumar,Ghosh, Chinmay Korean Mathematical Society 2017 대한수학회논문집 Vol.32 No.3
In this paper we establish some newly developed results related to the growth rates of composite entire functions on the basis of their generalized relative orders and generalized relative lower orders.
Biswas Ankita,Pal Suparna,Paul Subhabrata 한국작물학회 2024 Journal of crop science and biotechnology Vol.27 No.1
Asian people depend on rice for its signifcant nutritional value. The depreciating efect of cadmium (Cd) on rice crops is notably impulsive, leading to high changes in feld and negotiating consumer health. A regional two-year survey of 30 felds of the district North 24 Parganas was conducted to study soil parameters contributing Cd uptake in rice grains and subsequently to compare phytochemical properties of seeds among 3 common cultivars. Based on soil Cd concentration, rice cultivars grown in high Cd (HCd) and low Cd (LCd) contaminated felds were chosen. The efcacy of grain nutrition status of each cultivar with HCd and LCd was compared. Our results revealed that soil pH, organic matter, carbonate, and minerals pronouncedly afected Cd accumulation in grains. Cd-exposed Khitish HCd grains displayed signifcant reduction of phytochemicals like sugar, phenol, thiamine, ascorbic acid, and ribofavin contents imposing major nutritional degradation of grains compared to Khitish LCd. Contrarily, Pratiksha grains exhibited moderate levels of degradation while Maharaj HCd showed the least alteration in phytochemical status with minimum-grain-quality degradation compared to other HCd cultivars. The element analysis also confrmed that the highest Cd content in Khitish grains holds this cultivar as Cd accumulator while low Cd in Maharaj grain makes this “Cd safe” cultivar. This investigation may be recommended to avert consumption of such rice cultivars that accumulate high Cd in grains, and precautions should be drawn to limit Cd accumulation in rice grains by implementing Cd remediating agents for better food security