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233 results for “contamination”
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Research ArticleOpen accessIn the keywordsModeling the Evolution of Nitrate Pollution of Groundwater in the Plain of Western Middle CheliffNessrine Belmiloud, Naïma BettaharGroundwater constitute a potential source of drinking water supply and should, consequently, benefit from the necessary protection against the various forms of pollutions, particularly those diffuse of agricultural origin. The plain of Western Middle Cheliff which contains an important resource in groundwater supplying the whole population of the province of Chlef and contributing to the satisfaction of the need for … …American Journal of Environmental Sciences, Vol. 12, Issue 1 · 12 Jan 2016 · 7,141 accessesView PDFCite
Research ArticleOpen accessIn the keywordsStatus of Heavy Metals in Water and Sediment of the Meghna River, BangladeshMahmud Hassan, Mirza A.T.M. Tanvir Rahman, Badhan Saha, Abdul Kadir Ibne KamalThe pollution of river water and sediments by heavy metals has assumed serious problems due to their toxicity and accumulative behavior. The present study has been undertaken to assess the levels of heavy metals and the extent of pollution in the surface water and sediments from the Meghna river. Water and sediment samples were collected by the Standard Methods and, … …American Journal of Environmental Sciences, Vol. 11, Issue 6 · 24 Nov 2015 · 12,835 accessesView PDFCite
Research ArticleOpen accessIn the keywordsBacteriological Quality in Some Hand-Dug well Water as Source of Drinking Water in Ban Village, Plateau State, NigeriaDawang Denaan Noel, Aricha Anthony Aduma, John Deh HappinessAccess to potable water and healthy environment has been a concern worldwide. Developing nation like Nigeria has been facing critical challenge in accessing safe drinking water. Therefore, the people still depend on unsafe water sources such as rivers, streams and hand dug wells. This study examined the bacteriological quality of 16 drinking dug well water in four selected communities (Bantin, … …Current Research in Microbiology, Vol. 6, Issue 2 · 5 Nov 2015 · 7,907 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDetection of Pesticide Residue in Dams and Well Water in Jazan Area, Saudi ArabiaHasan Y. Al-Hatim, Deifalla Alrajhi, Abdul Jabbar Al-RajabThe application of pesticides indoors and on agricultural lands increased dramatically in recent years in the Jazan area (Saudi Arabia) to control termites and the vectors of diseases, such as Rift Valley Fever (RVF) and malaria. This practice increased the potential risk of pesticide contamination of surface water and groundwater. In this study, samples of 44 wells and 3 dams … …American Journal of Environmental Sciences, Vol. 11, Issue 5 · 3 Nov 2015 · 7,943 accessesView PDFCite
Case ReportOpen accessIn the keywordsSteady State Groundwater Flow Modeling of an Ex-Landfill Site in Kuala Lumpur, MalaysiaMustapha Atta, Wan Zuhairi Wan Yaacob, Othman Bin JaafarEffective and rational management of groundwater resources require adequate information on the groundwater flow interactions with surface water and chemical species in the flow regime. The hydrologic conditions beneath the unlined ex- landfill site in Jinjang Kuala Lumpur were investigated to understand the groundwater flow and geochemical setting in which contaminants transport in the groundwater may occur in the ex-landfill. … …American Journal of Environmental Sciences, Vol. 11, Issue 5 · 30 Oct 2015 · 8,092 accessesView PDFCite
Research ArticleOpen accessIn the keywordsCOUPLED NITROGEN AND OXYGEN ISOTOPE STUDY OF NITRATE AT A RURAL UNLINED LANDFILL IN WESTERN VICTORIA, AUSTRALIAJohn W. Moreau, Andrew M. MinardUnderstanding of site-scale physical and chemical heterogeneities will inform remediation strategies for unlined rural landfills worldwide. The aim of this study was to characterize potential sources of nitrogen contamination to groundwater at an unlined landfill in rural western Victoria, Australia. Results revealed simultaneously high concentrations of both nitrate and ammonia within several wells, indicative of heterogeneous redox potentials within the … …American Journal of Environmental Sciences, Vol. 10, Issue 4 · 30 Jun 2014 · 7,607 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAntibiogram of Bacteria Isolated from Automated Teller Machines Within Abakaliki MetropolisOkoro Nworie, Mbaba Mercy, Anyim Chukwudi et al.The Automated Teller Machine (ATMs) is likely to be contaminated with various microorganisms due to their vast dermal contact by multiple users. The metallic keypads of ATMs were examined to investigate their potentials as source of bacterial contamination and also the antibiogram of the isolated organisms. The study lasted from August, 2012 to October, 2012 involving several procedures like culturing, … …American Journal of Infectious Diseases, Vol. 8, Issue 4 · 9 Feb 2013 · 8,781 accessesView PDFCite
Research ArticleOpen accessIn the keywordsASSESSMENT OF SURFACE WATER QUALITY IN AN ARSENIC CONTAMINATED VILLAGEKumud C. Saikia, Susmita GuptaArsenic contamination of ground water has occurred in various parts of the world, becoming a menace in the Ganga-Meghna-Brahmaputra basin (West Bengal and Assam in India and Bangladesh). Recently arsenic has been detected in Cachar and Karimganj districts of barak valley, Assam, bordering Bangladesh. In this area coli form contamination comprises the major constraint towards utilization of its otherwise ample … …American Journal of Environmental Sciences, Vol. 8, Issue 5 · 31 Aug 2012 · 7,517 accessesView PDFCite
Research ArticleOpen accessIn the keywordsIsolation of Nitrate and Phosphate Removing Bacteria from Various Environmental SitesS. DebRoy, S. Das, S. Ghosh et al.Problem statement: Nitrate and phosphate are two major pollutants due to anthropogenic activity like excessive use of fertilizers in agriculture. Their contamination has emerged as a global problem and its potential threat is marked on the environmental sustainance as well as on the public health. Approach: The objective of the current study is to isolate efficient nitrate and phosphate removing … …OnLine Journal of Biological Sciences, Vol. 12, Issue 2 · 29 Jun 2012 · 9,348 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of Saliva Moistening on Shear Bond Strength of Self Ligating Orthodontic BracketsMaria Francesca Sfondrini, Danilo Fraticelli, Benedetta Balconi et al.Problem statement: The purpose of the present study was to compare Shear Bond Strength (SBS) and bond failure site of conventional and Self-Ligating (SL) orthodontic brackets, bonded on dry and saliva contaminated enamel. Approach: One conventional and three different types of self ligating stainless steel brackets were bonded onto 160 bovine permanent mandibular incisors, divided randomly into 8 groups, using … …Current Research in Dentistry, Vol. 1, Issue 2 · 22 Dec 2011 · 7,254 accessesView PDFCite