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867 results for “soil”
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Research ArticleOpen accessIn the abstractSpeciation of Arsenic Across Water-Sediment Interface of Falgu RiverRajeeva Ranjan, Rekha Rani, Ashay Bavishi et al.Two predominant species of arsenic compounds, As(III) and As(V), are found in soils and natural water and they have been classified as carcinogens. The focus of the present study was to examine the speciation of Arsenic (As) across the water-sediment interface at the confluence of drainage for Gaya city and the Falgu River. Gas Chromatography (GC) coupled to Inductively Coupled … …American Journal of Environmental Sciences, Vol. 8, Issue 6 · 31 Dec 2012 · 6,873 accessesView PDFCite
Research ArticleOpen accessIn the abstractMetals in Sediment Cores from Nine Coastal Lagoons in Central VietnamStefania Romano, Cristian Mugnai, Silvia Giuliani et al.Problem statement: After being dramatically hit by war events, Vietnam is presently experiencing a huge economical and social development. However, very few data, relative to pollution levels and trends, are available for the correct management of critical areas such as coastal lagoons, where many economical activities are linked to high value environmental features. Approach: A set of sediment cores from … …American Journal of Environmental Sciences, Vol. 8, Issue 2 · 9 Mar 2012 · 8,587 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Ecological Survey of Microorganisms Associated with Plantain Roots (Rhizosphere)Bello O.S., G.A. UtangProblem statement: Micro-organisms are more predominant around root zone and as such play a vital role to plant. Micro-organisms are diverse and have property modification which are beneficial to plant growth and root development. Approach: The lack of knowledge on the specific microorganisms associated with plantain roots in Cross River State soils (which inturn leads to an avoidable loss of … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 4 · 31 Dec 2011 · 8,268 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of Egyptian Smectitic Clay Deposits by Methylene Blue AdsorptionSalwa D. Abayazeed, Essam El-HinnawiProblem statement: The characterization of smectitic clays has been traditionally made using physical and chemical methods which are time-consuming and require costly equipment. Adsorption of methylene blue by these clays has been introduced as a quick and cheap method for the estimation of cation exchange capacity and surface area. Therefore, the aim of the present study was to test the … …American Journal of Applied Sciences, Vol. 8, Issue 12 · 11 Oct 2011 · 7,504 accessesView PDFCite
Research ArticleOpen accessIn the abstractAntagonist capacity of Newly Isolated Strains of Pseudomonas Fluorescens against Three Important Phytopathogenic BacteriaReynaldo De La Cruz-Quiroz, Catalina Chavez, Marcela Hernandez et al.Problem Statement: Phytopatogenic bacteria cause several damages to plants with important economical consequences. They provoke losses of product quality affecting all commercial chain of crops, for this reason, their control is a priority. Approach: We evaluated antagonist capacity of newly isolated Pseudonomas fluorescens strains against three important phytopatogenic bacteria (Clavibacter michiganensis, Xanthomonas axonopodis and Erwinia carotovora). Soils from commercial cropping … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 2 · 24 Jun 2011 · 8,004 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Simplified Analytical Modeling of the Hole Erosion TestMohammed Bezzazi, Abdellatif Khamlichi, Miguel Prron Vera et al.Problem statement: Internal erosion occurs in soils containing fine particles under the action of high pressure gradients that could result from water discharge. This phenomenon can yield in its final stage to the formation of piping which constitutes a real threat for hydraulics infrastructures as it can precipitate their entire rupture in very short time. In order to mitigate this … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 30 Nov 2010 · 8,025 accessesView PDFCite
Research ArticleOpen accessIn the abstractDevelopment and Evaluation of Tractors and Tillage Implements Instrumentation SystemS. A. Al-Suhaibani, A. A. Al-Janobi, Y. N. Al-MajhadiProblem statement: Field machines contribute a major portion of the total cost of crop production. Proper selection and matching of farm machinery is essential in order to reduce the cost of crop production. Performance data for tractors and implements are, therefore, essential for farm machinery operators and manufacturers alike. The aim of this study was to develop and evaluate an … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 2 · 30 Jun 2010 · 8,304 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparative Effects of Drought and Salt Stress on Germination and Seedling Growth of Pennisetum divisum (Gmel.) Henr.Wafa’a A. Al-TaisanProblem statement: Water stress due to drought and salinity is probably the most significant abiotic factor limiting plant and also crop growth and development. Salinity and drought stresses are physiologically related, because both induce osmotic stress and most of the metabolic responses of the affected plants are similar to some extent. Water deficit affects the germination of seed and the … …American Journal of Applied Sciences, Vol. 7, Issue 5 · 31 May 2010 · 27,311 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Importance of Maintaining a Proper Database on Forest Restoration Program for Orangutans in BorneoRaymond Alfred, Koh Pei Hue, Lee Shan Khee, Rayner AlfredProblem statement: The lowland forest of Sabah is the most important habitat for orangutans and pygmy elephants. This is shown in the WWF-Malaysia’s elephant tracking programme in which satellite-based Global Position System (GPS) collar devices are used to monitor their movement and the range of their habitats, as well as an aerial survey on orangutan’s nest is performed to determine … …American Journal of Environmental Sciences, Vol. 6, Issue 2 · 30 Apr 2010 · 7,910 accessesView PDFCite
Research ArticleOpen accessIn the abstractPore Water Pressure Contribution to Debris Flow MobilityChiara DeangeliProblem statement: Debris flows are very to extremely rapid flows of saturated granular soils. Two main types of debris flow are generally recognized: Open slope debris flows and channelized debris flows. The former is the results of some form of slope failures, the latter can develop along preexisting stream courses by the mobilization of previously deposited debris blanket. The problem … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Aug 2009 · 6,588 accessesView PDFCite