نتایج جستجو برای: organic matter content omc

تعداد نتایج: 777511  

2013
Ted M. Zobeck Matthew Baddock Scott Van Pelt John Tatarko Veronica Acosta-Martinez

Histosols (also known as organic soils, mucks, or peats) are soils that are dominated by organic matter (OM > 20%) in half or more of the upper 80 cm. Forty two states have a total of 21 million ha of Histosols in the United States. These soils, when intensively cropped, are subject to wind erosion resulting in loss of crop productivity and degradation of soil, air, and water quality. Estimatin...

2010
Nur Duale Ann-Karin Olsen Terje Christensen Shamas T. Butt Gunnar Brunborg

Octyl methoxycinnamate (OMC) is one of the most widely used sunscreen ingredients. To analyze biological effects of OMC, an in vitro approach was used implying ultraviolet (UV) exposure of two human cell lines, a primary skin fibroblast (GM00498) and a breast cancer (MCF-7) cell lines. End points include cell viability assessment, assay of cyclobutane pyrimidine dimers (CPDs) and oxidated DNA l...

2011
R. Jayashree Shiv O. Prasher Rajvinder Kaur Ramanbhai M. Patel

Salinomycin is polyether ionophore, commonly used in poultry industry for the prevention of coccidial infections and promotion of growth. A large amount of the administered antibiotic is excreted as parent compound, eventually reaching agricultural lands. This makes it imperative for researchers to understand the behavior of the compound in soil environment by conducting sorption-desorption stu...

Journal: :Bioelectrochemistry 2009
Jean Chrysostome Ndamanisha Liping Guo

This work reports on a novel nonenzymatic amperometric glucose sensor based on the ordered mesoporous carbon (OMC). Amperometric method was used to evaluate the electrocatalytic activity of the OMC modified electrode toward nonenzymatic glucose in alkaline media in presence and absence of chloride ions. The results indicated that OMC showed electrocatalytic activity for the oxidation of glucose...

Journal: :تحقیقات آب و خاک ایران 0
ندا مرادی کارشناسی ارشد، دانشگاه ارومیه میرحسن رسولی صدقیانی عضو هیات علمی دانشگاه ارومیه ابراهیم سپهر عضو هیات علمی، دانشگاه ارومیه بابک عبدالهی عضو هیات علمی دانشگاه ارومیه

the effect of 0, 2, and 5 mm of citric, malic and oxalic acids on phosphorus (p) sorption was evaluated. in the collected soils, the level of total calcium carbonate stood in the range of 4-28%, clay content at 33-56% and the amount of organic matter recorded within 0.6-2.7%. the results indicated that the addition of organic acids causes reduction in p sorption. citric acid in most soils, was ...

Journal: :بوم شناسی کشاورزی 0
علی اصغر محمد آبادی پرویز رضوانی مقدم جبار فلاحی زینت برومند رضازاده

in order to study the effect of different organic fertilizers on quantitative and qualitative characteristics of fenugreek forage, an experiment was conducted based on completely randomized block design with six treatments and three replications at agricultural research station, college of agriculture, ferdowsi university of mashhad, iran, during 2006. the experimental treatments were four orga...

Journal: :Journal of hazardous materials 2013
Joanna Maszkowska Marta Kołodziejska Anna Białk-Bielińska Wojciech Mrozik Jolanta Kumirska Piotr Stepnowski Richard Palavinskas Oliver Krüger Ute Kalbe

Sulfonamides (SAs) and their metabolites present severe hazards to human health and the environment, mainly because of antibiotic resistance. Knowledge of their bioavailability, including their sorption to soils and their impact on the soil-groundwater pathway, is crucial to their risk assessment. Laboratory batch and column leaching tests are important tools for determining the release potenti...

Journal: :Circulation 2012
Timothy P Murphy Donald E Cutlip Judith G Regensteiner Emile R Mohler David J Cohen Matthew R Reynolds Joseph M Massaro Beth A Lewis Joselyn Cerezo Niki C Oldenburg Claudia C Thum Suzanne Goldberg Michael R Jaff Michael W Steffes Anthony J Comerota Jonathan Ehrman Diane Treat-Jacobson M Eileen Walsh Tracie Collins Dalynn T Badenhop Ulf Bronas Alan T Hirsch

BACKGROUND Claudication is a common and disabling symptom of peripheral artery disease that can be treated with medication, supervised exercise (SE), or stent revascularization (ST). METHODS AND RESULTS We randomly assigned 111 patients with aortoiliac peripheral artery disease to receive 1 of 3 treatments: optimal medical care (OMC), OMC plus SE, or OMC plus ST. The primary end point was the...

2013
Ana Isabel Cañero Lucía Cox Antonio López-Piñeiro Daniel Becerra Ángel Albarrán Maria del Carmen Hermosín Juan Cornejo

Herbicides are the main type of pesticides causing water contamination. The chloroacetanilide herbicide Smetolachlor is frequently detected in ground and surface waters, and represents a potential source of water pollution. The addition of organic residues to soils to reduce losses of organic pollutants constitutes sometimes an efficient method to control contamination. One of the recent techno...

Journal: :The Science of the total environment 2002
H Biester G Müller H F Schöler

Chlor-alkali plants are known to be an important source of Hg emissions to the atmosphere and related contamination of soils in their vicinity. In the present study, the results of Hg speciation and mobility of Hg in soils affected by Hg emissions from three chlor-alkali plants are compared. Solid phase mercury speciation analyses was carried out using a mercury-thermo-desorption technique with...

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