environmental degradation model is one of the environmental impact assessment (eia) methods in which ecological cumulative effects of human activities on his surrounding nature could be evaluated and quantified. as a special trait of landscape ecological metrics is the ability of rapid assess and recognize of human activities in the shortest time. thus in this study, we used a landscape degrada...

in this study, the degradation potential of five polycyclic aromatic hydrocarbons (pahs) by aerobic mixed bacterial cultures was investigated. microorganisms were isolated from hydrocarbon contaminated soils of shadegan wetland located in southwest of iran. the degradation experiments were conducted in liquid cultures. pah or pahs concentration was 100 mg/l at the beginning of degradation exper...

In this study, the ultrasonic, photocatalytic and sonophotocatalytic degradation of organics in textile industrial effluent was studied using ZnO nano catalyst, ZnO nano catalyst was synthesized by using sol-gel method. The structure and morphology of the catalyst were investigated using scanning election microscopy (SEM), electron dispersive X-ray spectroscopy (EDS) and X-ray <span id="transma...

fluvoxamine maleate is a selective serotonin reuptake inhibitor, which is used for the treatment of different types of depressive disorders. in the present study, a stability indicating hplc method was developed and validated for the determination of fluvoxamine maleate. the chromatographic separation was carried out using a nova-pak cn column and a mixture of k2hpo4 50 mm (ph 7.0) and acetonit...

conclusions according to the results, cop is an efficient and rapid method for removing of toluene from aqueous solutions. results the analysis of variance (anova) of the toluene degradation by cop/mgo nanoparticles showed f-value of 19.53 for the quadratic model indicating that the prepared model is significant. the predicted result showed that maximum degradation of toluene (~99.99%) could be...

continuous and excessive use of organophosphorus compounds has led to thecontamination of water and soil ecosystems. the degradation of organophosphorusinsecticides, chlorpyrifos, chlorpyrifos- methyl, cyanophos and malathion in mineral saltsmedia were studied. the effect of additional biofertilizers, singly or combined withorganic amendments, on chlorpyrifos and cyanophos degrading activity in...

During recent years several attempts have been made to incorporate environmental and natural resources degradation into national accounts. GNP as measured by the traditional system of national accounts does not consider environmental degradation caused by inefficient exploitation of natural resources. While the complete omission of environmental impacts is not possible, there could be an optima...

environmental impact assessment (ela) today is a planning tool that is used for the prediction of environmental impacts. there are several methods to assess environmental impacts in the world and iran as well. among them system analysis approach using degradation model (makhdoum, 1996) has shown it&apos;s effectiveness. degradation model is used at different levels including the basin , catchme...

     In recent years, large rangeland areas have been destroyed for various reasons, so that its negative impacts on local people's income and sustainable livelihood are become significant. Due to the fact that signs of negative or downward trends in the rangelands condition are being revealed prior to the complete degradation, a study was done to identify these sings and evaluate their importa...