Valorization of granite production dust in development of rich and lean cement mortar

Journal of Material Cycles and Waste Management - Granite mining, cutting and processing generates huge amount of waste which is dumped in open landfills. The objective of this research is to...     

Exploring the therapeutic potential of omega-3 fatty acids in depression

Environmental Science and Pollution Research - Omega-3 fatty acids have been acknowledged for their number of holdings on an individual’s health. Not only in physical valuation but also in...     

Blade thickness effect on the aerodynamic performance of an asymmetric NACA six series blade vertical axis wind turbine in low wind speed

ABSTRACT

Vertical axis wind turbine (VAWT) is an economic and widely used energy converter for converting wind energy into useful form of energy, like mechanical and electrical energy. For efficient energy conversion in low wind speed and to have improved power coefficient of asymmetric blade VAWT, selection of optimum blade thickness is needed thus entailing its detailed investigation with respect to different operating wind speed conditions. Present study methodically explores the impact of thickness to chord (t/c) ratio on aerodynamic performance of a three bladed asymmetrical blade H-Darrieus VAWT at different low wind speed conditions by using 2D unsteady CFD simulations. The optimal t/c is obtained on the basis of maximum power coefficient and average moment coefficient of the turbine. The aerodynamic performance curves are obtained at different operating and t/c conditions and the performance insights are corroborated with the findings from the flow physics study to come to some concrete conclusions on the effects of the thickness to chord ratio. The present study identifies large blade curvature to create a large diverging passage on the blade suction surface as the prominent reason for aerodynamic performance drop at a high t/c ratio.     

Numerical simulation of pedestrian level wind conditions: effect of building shape and orientation

Environmental Fluid Mechanics - Pedestrian level wind comfort, natural ventilation and pollutant dispersion are strongly influenced by building shape and orientation. In the recent years, the trend...     

Mercury sources and physicochemical characteristics in ice,snow, and meltwater of the Laohugou Glacier Basin,China

Environmental Science and Pollution Research - In this work, samples of surface snow, surface ice, snow pit and meltwater from the Laohugou Glacier No. 12 on the northern edge of Tibetan Plateau...     

A spore-based miniaturized novel assay for rapid aflatoxin detection in milk

Environmental Chemistry Letters - Aflatoxin M1 contamination in milk and dairy products is a major issue worldwide. Aflatoxin is a carcinogen that enters into the milk through animals feed. Here,...     

Work-Related Musculoskeletal Disorders,Job Stressors and Gender Responses in Foundry Industry

The main aim of this paper was to identify job stressors, gender responses and association of psychosocial work stressors with prevalence of work related musculoskeletal disorders (MSDs) among foundry workers. The data were obtained with ergonomics checklist using Likert scale. The results of this study showed a high prevalence of MSDs among workers. The male workers were more prone to pain in neck while the female workers were more prone to MSDs in upper back and shoulders. Correlation analysis showed significant relationship of dimensions of work aspects with pain and discomfort. It proved that the work-related MSDs are the results of interaction of multiple stressors associated with work and work environment, and other personal factors. ANOVA indicated that the perception of work aspects as stressors differed significantly between male and female workers.     

Synthesis of graphitic carbon nitride/cadmium sulfide core-shell nanofibers for enhanced photocatalysis

Environmental Science and Pollution Research - The synthesis of graphitic carbon nitride/cadmium sulfide core-shell nanofibers has been studied for the improved photodegradation of methylene blue...     

Comparative photocatalytic dye and drug degradation study using efficient visible light–induced silver phosphate nanoparticles

Environmental Science and Pollution Research - The industrialization, growing population, and human activities (e.g., liquid waste of households, industrial units, and agricultural lands) are the...