University of Burdwan

About: University of Burdwan is a education organization based out in Barddhamān, West Bengal, India. It is known for research contribution in the topics: Population & Nanocrystalline material. The organization has 2492 authors who have published 5389 publications receiving 74865 citations. The organization is also known as: BU & Burdwan University.

A simple and dual responsive efficient new Schiff base chemoreceptor for selective sensing of F− and Hg2+: application to bioimaging in living cells and mimicking of molecular logic gates

Abstract: A novel colorimetric hydrazine-functionalized Schiff base chemoreceptor, NPMP, was synthesized following a simple one-step Schiff base condensation pathway. NPMP showed selective colorimetric change from faint yellow to yellowish orange in the presence of biologically ubiquitous fluoride (F−). It also showed a ‘turn off’ fluorescent response in the presence of F− that could effectively distinguish it from all anions tested except acetate. Acetate (OAc−) caused a weak response, while other anions like chloride, bromide, iodide, phosphate, hydrogen sulfate and nitrate did not have any observable effect on the NPMP receptor (E)-4-nitro-2-((2-(perfluorophenyl)hydrazono)methyl)phenol. Recognition of F− in the presence of NPMP can be explained in light of multiple H-bonding interactions, as well as acid–base interactions between host receptor and guest F−. Interestingly, NPMP also showed enormous potential as a staining agent in determining the presence of low levels of intracellular fluoride. Moreover, it was found that in NPMP⋯F− solutions, incorporation of Hg2+ showed observable optical changes, revealing that this compound is a smart material. Optical responses of NPMP can mimic a molecular logic gate (INHIBIT gate). This can be interpreted as a combination of an AND gate with a NOT function. It also represented a potential ‘Write–Read–Erase–Read’ memory function reflecting multi-writing ability.

An EOQ model with two-parameter Weibull distribution deterioration and price-dependent demand

Abstract: An Inventory replenishment policy is developed for a deteriorating item and price-dependent demand. The rate of deterioration is taken to be time-proportional and the time to deterioration is assumed to follow a two-parameter Weibull distribution. A power law form of the price dependence of demand is considered. The model is solved analytically and is illustrated with a numerical example.

The relevance of environmental Kuznets curve (EKC) in a framework of broad-based environmental degradation and modified measure of growth – a pooled data analysis

Abstract: The economic growth and natural environment trajectory has been expressed and interpreted in myriad ways. One hypothesis that is comprehensively used to empirically model the economic growth and environmental degradation relationship is the widely known environmental Kuznets curve (EKC hypothesis). However, the initial EKC formulation has stimulated a large debate around the need for alternative representations of the relationship between economic growth and environment. In this paper, we have introduced some modifications to the standard EKC. In particular, we have changed the dependent variable substituting a pure environmental stress as in the standard EKC with a wider assessment of environmental pressure defined by the environmental degradation index (EDI). Of the two models that we have considered in our study, we have taken gross domestic product (GDP) as the explanatory variable in one model and development balance index (DBI) in another model. The results show an N-shaped pattern for most of the c...