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233 results for “contamination”
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Research ArticleOpen accessIn the keywordsOptimization of Energy Dispersive X-Ray Fluorescence Spectrometer to Analyze Heavy Metals in Moss SamplesMohd Zahari Abdullah, Ahmad Saat, Zaini HamzahProblem statement: Mosses had been widely used as bioindicator especially to study the levels of trace metals pollutants in the surrounding ambient air because of their high efficiency to accumulate heavy metals contamination. There had been increasing demand to get a suitable analytical tools to determine the chemical contents of moss samples in this type of media. This study was … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 3 · 18 Aug 2011 · 7,793 accessesView PDFCite
Research ArticleOpen accessIn the keywordsType I host resistance and Trichothecene Accumulation in Fusarium-infected Wheat HeadsPravin Gautam, Ruth Dill-MackyProblem Statement: The objective of this study was to examine the influence of the type I host resistance and pathogen variation with respect to mycotoxin and aggressiveness, on infection, FHB disease development and mycotoxin accumulation in planta. Approach: Greenhouse experiments were conducted utilizing a spray inoculation method. Five single isolates of F. graminearum were tested. Three wheat cultivars were used; … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 2 · 6 Jun 2011 · 11,214 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDifferent Sorption Approaches and Leachate Fluxes Affecting on Mn2+ Transport through Lateritic AquiferSrilert Chotpantarat, Chakkaphan SutthiratProblem statement: Contamination of the underlying aquifer beneath a mining area is usually of great concern even when a prevention plan has been implemented. Approach: To assess the potential risk of heavy metal contamination, the simulation of heavy metal transport was carried out with different leachate fluxes and sorption parameters derived from equilibrium models with linear and Langmuir isotherms and … …American Journal of Environmental Sciences, Vol. 7, Issue 1 · 28 Feb 2011 · 6,150 accessesView PDFCite
Research ArticleOpen accessIn the keywordsInvestigating the Effect of Three Nitrate Fertilizers on Nitrate Leaching under the Root Zone in Clay Loam SoilThamer Ahmed Mohammed, M. Nooshin, Megat Johari Megat Mohd. Noor, A. LiaghatProblem statements: Nitrogen fertilizer is recognized as an important factor in crop’s yield level, however more application of N fertilizers in the soil have some adverse effects on environment and especially on groundwater contamination. Perception and recognition the factors influencing nitrate transport through soil profile is helpful for fertilizer management to minimize adverse impacts on environment and nitrate leaching below … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 7,065 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPetrology and Origin of Ultramfic Xenoliths from North Eastern Jordan VolcanoesHassan Al-Fugha, Mazen AL-AmairehThe distribution of major, minor and trace elements in the Cenozoic alkali basalt from north-eastern Jordan indicates a homogeneous lava flow from a mantle source. These basaltic rocks contain abundant upper mantle xenoliths (spinal lherzolite, harzburgile and olivine- websterite). Theses xenoliths contain olivine, orthopyroxne, clinoporoxene and a few amounts of spinal. Their mineral assemblages, chemistry, texture and major elements abundances … …American Journal of Applied Sciences, Vol. 4, Issue 7 · 31 Jul 2007 · 7,016 accessesView PDFCite
Research ArticleOpen accessIn the keywordsBiological Activity of Methyl tert-butyl Ether in Relation to Soil Microorganisms has a Negative Environmental ImpactGholam H.S. BonjarFuel oxygenates are added to gasoline to enhance combustion efficiency of automobiles and reduce air pollution. Methyl tert-butyl ether (MTBE) is the most commonly used oxygenate because of its low cost, high-octane level and ease of blending with gasoline. However, due to its water solubility, high mobility and low biodegradability it leaches in soil subsurface at the speed of groundwater. … …American Journal of Environmental Sciences, Vol. 1, Issue 2 · 30 Jun 2005 · 6,665 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAnalysis of Leakage Current to Predict Insulator Flashover Using Artificial Neural NetworkN. Narmadhai, A. Ebenezer JeyakumarProblem statement: The phenomenon of flashover in polluted insulators has been continued by the study of the characteristics of contaminating layers deposited on the surface of insulators in high voltage laboratories. In the literature, Experimental investigations have been carried out on a real insulator or a flat plate model of insulators under high voltage application. This study proposed the Equivalent … …Journal of Computer Science, Vol. 7, Issue 2 · 25 Feb 2011 · 7,624 accessesView PDFCite
Research ArticleOpen accessIn the keywordsMechanism of Garden Aquatic Plants in the Remediation of Heavy Metal-Contaminated SoilChen Chen, Guangwu LiuHeavy metals such as cadmium, lead, and mercury are resistant to microbial degradation in soil and persist for extended periods. They can bioaccumulate through the food chain, ultimately impacting human health. This study demonstrates that a combined restoration approach involving soil enhancement and garden aquatic plants, specifically through the application of ferrous sulfate, results in increased dry weight and plant … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 1 · 20 Apr 2026 · 1,505 accessesView PDFCite
Research ArticleOpen accessIn the keywordsTrace Elements in Fertilizers Used in PeruVíctor Gómez, Mauricio Molina-Roco, Elder Chichipe, Eli Morales RojasFertilizers provide essential nutrients for crops, however, they may also inadvertently provide trace elements that in certain concentrations represent a risk to the soil and the food chain. The objective of this research was to determine the concentrations of Cd, Pb, Cu, and Zn in the most common fertilizers used in Peruvian agriculture. Twenty-one products including inorganic, organic mineral, and … …OnLine Journal of Biological Sciences, Vol. 23, Issue 2 · 10 Apr 2023 · 6,444 accessesView PDFCite
Research ArticleOpen accessIn the keywordsLevels of Metals and Microbial Biomass in Cobalt Coleman Mine Tailings (Canada) Three Decades after Land ReclamationKabwe Nkongolo, Graeme Spiers et al.Investigations of restored metal contaminated tailings in Canada with regard to their long-term ability to sustain plant and associated microbiological populations are limited. The specific objectives of the present study were to assess (1) The current levels of total and bioavailable metals and (2) Microbial biomass in Cobalt Coleman mine tailings reclaimed in 1990. The level of microbial biomass was … …American Journal of Environmental Sciences, Vol. 19, Issue 1 · 20 Mar 2023 · 6,011 accessesView PDFCite