http://20.198.91.3:8080/jspui/handle/123456789/193 2026-04-05T23:24:22Z http://20.198.91.3:8080/jspui/handle/123456789/9374 Title: Investigating the current arsenic contamination scenario in paddy and search for remediation of arsenic in rice by cooking practices: a study focusing on Murshidabad district of West Bengal, India Authors: Md Zaman Hateef Abstract: Arsenic contamination is not only affecting drinking water but also staple food such as rice. It has become a global issue as a dietary risk among humans. Naturally occurring arsenic in paddy soils gets magnified several folds by irrigating with arsenic contaminated groundwater, which further intensifies the problem. Numerous research is ongoing to reduce the arsenic in drinking water. After a review of various works of literatures, it was found that very little research has been conducted to remediate the As in household level through cooking of rice. To initiate the work as a background knowledge this study will conduct the paddy cultivation and post-harvesting practices in Murshidabad district of West Bengal. The objectives of this study will be to monitor the current arsenic exposure scenario in soil-paddy system, to explore the possibility of reducing Arsenic toxicity in the cooked rice by various pre-cooking and cooking methods. 2024-01-01T00:00:00Z http://20.198.91.3:8080/jspui/handle/123456789/9373 Title: Decadal change of air pollution of two selected locations of Kolkata, West Bengal Authors: Mohonta, Adrita Abstract: Data on the concentration of air pollutants in a recently constructed industrial park in Kolkata, India's rapidly expanding metropolis, is presented in this study. Kolkata is a part of the State of West Bengal. By gathering records of monthly secondary data of air pollutants from the West Bengal Pollution Control Board (WBPCB) website, the ambient air quality assessment was conducted at two different locations, namely Behala Chowrasta and Ultodanga, with respect to SOx, NOx, suspended particulate matter (SPM) and respirable suspended particulate matter (RSPM), as well as the Air Quality Index (AQI). It is shown that even the average concentrations of SPM, NOx, Sox, and AQI were at their maximum levels in the winter, summer, and rainy season, respectively, at the two location sites. Following data collection, a graph was used to statistically analyse the decadal change in air pollution. Standard division was used to add or subtract error from the monthly average value of air pollutants for the years 2009 to 2019. Ultimately, statistical tools such as the Box Plot and Regression technique were employed to conduct trend analysis in order to determine the nature of the air pollution trend at the two Kolkata locations that were mentioned between 2009 and 2019. Up until 2030, the future trend in air pollution was also computed using the preceding pattern as a guide. Precautions and solutions for improving air quality were also covered. The second section examined the state of the air quality during the COVID-19 pandemic in 2020–2021, examining the air quality throughout the three distinct phases of pre-, lockdown, and post-lockdown of the two same locations of Kolkata. 2024-01-01T00:00:00Z http://20.198.91.3:8080/jspui/handle/123456789/9372 Title: Nature based solution for the earthen embankment of Indian Sundarban Authors: Das, Dipankar Abstract: The Indian Sundarbans, a critical region within the Ganges Brahmaputra Meghna delta, faces severe challenges due to rising sea levels, frequent cyclones, and human activities, which endanger its ecosystems and the livelihoods of its inhabitants. Traditional earthen embankments, used to protect against tidal surges and saline intrusion, are increasingly vulnerable under these stressors. This research explores the potential of Nature Based Solutions (NBS) to stabilize these embankments, focusing on laboratory testing to evaluate the effectiveness of NBS enhanced designs. The study investigates the use of mangrove vegetation and bioengineering techniques to improve the structural integrity of earthen embankments. Through controlled laboratory experiments, the research assesses the stabilization effects of incorporating vegetation and natural materials into embankment soils, examining parameters such as erosion resistance, sediment stability, and water absorption capacity. The results demonstrate that NBS can significantly enhance embankment durability while providing additional benefits like biodiversity conservation and carbon sequestration. This study highlights the practicality of integrating NBS into traditional embankment designs in the Sundarbans, offering a sustainable approach to coastal protection. The findings underscore the need for incorporating ecological principles in engineering practices, providing valuable insights for policymakers and environmental managers aiming to enhance coastal resilience in vulnerable deltaic regions like the Sundarbans. 2024-01-01T00:00:00Z http://20.198.91.3:8080/jspui/handle/123456789/9370 Title: A comparative analysis of urban vulnerability using a geographical information system based on fuzzy multi-criteria dimensional analysis in the metropolitan region of the Hooghly river delta and the chao phraya river delta Authors: Das, Ankita Abstract: Urban Vulnerabilities in the deltaic metropolitan areas have become a challenging concern, affected by seasonal variations and varied environmental socio-economical, and demographical factors. This study represents a comparative analysis of the Urban Vulnerability of two deltaic megacities namely Bangkok Metropolitan Region (BMR), Thailand, and Kolkata Metropolitan Area (KMA), India. This study employed Geographical Information System (GIS) based fuzzy Multi-Criteria Dimensional Analysis (MCDA) to map spatial data and assess vulnerabilities regarding parameters such as Rainfall, AQI, LST, NDBI, NDVI, Population Density, Old/Child Population, Literacy Rate, and Per Capita Income, focusing on how these parameters fluctuate with the summer, monsoon and winter season, and also its impacts in the metropolis due to seasonal variations. The results indicate that about 4.70 sq. km.(0.3%) and 585.23 sq. km.(37.3%) of the area in the central region and its surroundings of BMR and 21.50sq. km.(1.14%) and 68.29 sq. km.(3.62%) of the area in the central region and its surroundings of KMA are highly vulnerable in summer and monsoon and also highly exposed to multiple climatic and physiological threats, especially heat waves, cardiovascular disease, and neurological diseases. The study also highlights how elderly, children and low-income groups are more susceptible to vulnerabilities. The study explains the relationship between seasonal environmental shifts and physiological threats, stressing for the need of season- specific public health strategies and proper urban planning measures. To mitigate the effects of Urban Vulnerability in deltaic megacities, policymakers, and urban planners shall consider the findings of this study into account while planning sustainable solutions to the hazards. 2024-01-01T00:00:00Z