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171.
Rajendra Kumar Foolmaun Dinkar Sharma Chamilall 《Resources, Conservation and Recycling》2011,55(11):966-972
In Mauritius, solid waste disposal has been a cause for concern since the 1980s. Currently, there is no segregation of waste and some 1200 tonnes of solid waste are generated daily by the 1.24 million inhabitants of the island. As processes such as recycling and composting are still in their infancy stage, most of the waste generated have to be disposed of at the sole landfill. The solid waste management practices of 1980s and early 1990s are no longer compatible with the changing composition and quantity of wastes now generated. As a result, there is an urgency to review the whole waste management system and come forward with sustainable solutions.This paper presents an overview of the disposal of non-hazardous solid waste in Mauritius and provides recommendations for improving the current disposal system. 相似文献
172.
Singh VK Pathak MK Bihari V Jyoti Patel DK Mathur N Kesavachandran CN Siddiqui MK 《Journal of environmental biology / Academy of Environmental Biology, India》2011,32(1):39-42
An important role of oxidative stress for the development of vascular and neurological complications has encouraged us to undertake a study to assess the oxidative stress induced nerve conduction deficits among cigarette smokers. Eighteen regular male cigarette smokers and twenty nine male non-smokers were diagnosed for clinical neuro-physiological tests viz., motor and sensory nerve conduction velocity (MNCV and SNCV) and redox status. Significant depletion of reduced glutathione (GSH) level (p < 0.05) and significant increase in malondialdehyde (MDA) level (p < 0.01) was found in smokers compared to non-smokers. Motor and sensory nerve conduction velocity showed no significant difference among smokers compared to non-smokers. The present study shows that smoking can induce oxidative stress among smokers but could not exacerbate to nerve conduction deficits. 相似文献
173.
Mrittika Basu Sunil Kumar Gupta Gurdeep Singh Ujjal Mukhopadhyay 《Environmental monitoring and assessment》2011,172(1-4):121-134
The USA is entering an era of energy diversity, and increasing nuclear capacity and concerns focus on accidents, security, waste, and pollution. Physical buffers that separate outsiders from nuclear facilities often support important natural ecosystems but may contain contaminants. The US Nuclear Regulatory Commission (NRC) licenses nuclear reactors; the applicant provides environmental assessments that serve as the basis for Environmental Impact Statements developed by NRC. We provide a template for the types of information needed for safe siting of nuclear facilities with buffers in three categories: ecological, fate and transport, and human health information that can be used for risk evaluations. Each item on the lists is an indicator for evaluation, and individual indicators can be selected for specific region. Ecological information needs include biodiversity (species, populations, communities) and structure and functioning of ecosystems, habitats, and landscapes, in addition to common, abundant, and unique species and endangered and rare ones. The key variables of fate and transport are sources of release for radionuclides and other chemicals, nature of releases (atmospheric vapors, subsurface liquids), features, and properties of environmental media (wind speed, direction and atmospheric stability, hydraulic gradient, hydraulic conductivity, groundwater chemistry). Human health aspects include receptor populations (demography, density, dispersion, and distance), potential pathways (drinking water sources, gardening, fishing), and exposure opportunities (lifestyle activities). For each of the three types of information needs, we expect that only a few of the indicators will be applicable to a particular site and that stakeholders should agree on a site-specific suite. 相似文献
174.
The largest uncertainties are associated with estimating the soil organic carbon (SOC) stock because of natural soil variability and data scarcity. Thus, a local spatial geostatistical hybrid approach, the geographically weighted regression kriging (GWRK), was used in the present study to overcome some of these uncertainties. This study was designed to estimate the SOC stock (kg C m(-2)) for the surface 0 to 15 cm depth using the state of Pennsylvania as the study region. A total of 920 soil profiles were extracted from the National Soil Survey Center database and were divided into calibration (80%) and validation (20%) periods. Some soil parameters that include clay content, bulk density (ρ(b)), total nitrogen (TN) content, pH, Ca(2+), Na(+), extractable acidity (EXACID), and cation exchange capacity (CEC) were used as covariates for estimating the SOC stock. These covariates exhibited spatial autocorrelation (Moran's Index, I = 0.62 to 0.89). Further, residuals of geographically weighted regression were spatially autocorrelated, and hence support the use of the GWRK approach. Validation results concluded that the performance of the GWRK approach was the best with the lowest values of root mean square error, mean estimation error and mean absolute estimation error. The estimated SOC stock for the surface 0 to 15 cm depth ranged from 1.41 to 3.94 kg m(-2). Results from this study show that the GWRK captures spatial dependent relationships, and addresses spatial non-stationarity issues, hence this approach improves the estimations of SOC stock. 相似文献
175.
Chauhan Anand Sharma Nagendra Kumar Tayal Shilpy Kumar Vimal Kumar Manish 《Journal of Material Cycles and Waste Management》2022,24(5):1797-1817
Journal of Material Cycles and Waste Management - The studies highlightthat only one billion tons were obtained out of four billion tons of solid waste in the world and small value recovered out of... 相似文献
176.
Hiremani Vishram D. Goudar Naganagouda Gasti Tilak Khanapure Sheela Vanjeri Vinayak N. Sataraddi Sarala D’souza Oshin Jacintha Vootla Shyam Kumar Masti Saraswati P. Malabadi Ravindra B. Chougale Ravindra B. 《Journal of Polymers and the Environment》2022,30(4):1314-1329
Journal of Polymers and the Environment - This study explains the development of eco-friendly polyvinyl alcohol (PVA)/oxidized maize starch (OMS)/Betel leaves extract (BLE) blend films by employing... 相似文献
177.
Al Shibli Fatema Said Zahir Said Bose Subrajit Kumar P. Senthil Rajasimman M. Rajamohan N. Vo Dai-Viet N. 《Environmental Chemistry Letters》2022,20(1):929-947
Plants contain substances that inhibit corrosion. Here we review biomass-based corrosion inhibitors from plant leaves, nuts, and fruit peels, after treatment with acids, bases or saline solutions. The mechanism of corrosion inhibition involves a monolayer coverage, according to isotherm and Langmuir models. Plant extract-based corrosion inhibitors contain heteroatoms whose electrons pair in the p-electron level in multiple bonds and the vacant d-orbitals of iron. Corrosion inhibition under marine conditions involves various chemical interactions between metals and dissolved ionic components.
相似文献178.
Muthusamy Subbulakshmi Anandharaj Swetha Juliet Kumar Ponnusamy Senthil Meganathan Yogesan Vo Dai-Viet Nguyen Vaidyanathan Vinoth Kumar Muthusamy Shanmugaprakash 《Environmental Chemistry Letters》2022,20(5):3199-3234
Environmental Chemistry Letters - Most fossil fuel-derived polymers used for food packaging are non-biodegradable and induce pollution by microplastic, calling for safer material. Here we review... 相似文献
179.
Dutta Deblina Arya Shashi Kumar Sunil Lichtfouse Eric 《Environmental Chemistry Letters》2022,20(2):971-974
Environmental Chemistry Letters - 相似文献
180.
Dhiman Pooja Rana Garima Kumar Amit Sharma Gaurav Vo Dai-Viet N. Naushad Mu. 《Environmental Chemistry Letters》2022,20(2):1047-1081
Environmental Chemistry Letters - Energy shortage and escalating pollution are major challenges globally. Heterogeneous photocatalysis is one of the most cost-effective methods for producing... 相似文献