نتایج جستجو برای: remediation
تعداد نتایج: 10752 فیلتر نتایج به سال:
Development and use of remediation technologies for contaminated soils and water progresses at a very fast pace and thus a large number of cleanup alternatives emerge. The selection of the most appropriate Remediation technology for the given site must be based on many, usually conflicting, criteria. To successfully apply all these criteria a multicriteria decision support system (DSS) is neede...
Since the issue of the first regulations concerning the remediation of contaminated sites, the Istituto Superiore di Sanità, on the basis of specific requests, has drawn up various technical opinions regarding the proposed reference values (quality standards) for soils and underground waters, to be achieved when remediating contaminated sites, for substances for which no standard limit values d...
A reactive transport model based on one-dimensional transport and equilibrium chemistry is applied to synoptic data from an acid mine drainage stream. Model inputs include streamflow estimates based on tracer dilution, inflow chemistry based on synoptic sampling, and equilibrium constants describing acid/base, complexation, precipitation/dissolution, and sorption reactions. The dominant feature...
Sampling scheme design is an important step in the management of polluted sites. It largely controls the accuracy of remediation cost estimates. In practice, however, sampling is seldom designed to comply with a given level of remediation cost uncertainty. In this paper, we present a new technique that allows one to estimate of the number of samples that should be taken at a given stage of inve...
The effectiveness of mine-waste remediation at the Clark Fork River Superfund site in western Montana, USA, was examined by monitoring metal concentrations in resident biota (caddisfly, Hydropsyche spp.) and bed sediment over a 19-year period. Remediation activities began in 1990 and are ongoing. In the upper 45 km, reduced Cu and Cd concentrations at some sites were coincident with remediation...
Cognitive problems are consistently documented in people with schizophrenia. They negatively influence functioning and contribute to the long term consequences of the illness. Cognitive remediation (CR) is a psychological intervention developed to target these cognitive difficulties. There is evidence that CR is beneficial but there is still a limited understanding of how the putative active th...
Using multivariate design and modelling, the optimal conditions for electrodialytic remediation (EDR) of heavy metals were determined for polluted harbour sediments from Hammerfest harbour located in the geographic Arctic region of Norway. The comparative importance of the variables, current density, remediation time, light/no light, the liquid-solid ratio and stirring rate of the sediment susp...
Several alternatives to medication exist as treatments for Attention Deficit /Hyperactivity Disorder (ADHD). One alternative treatment modality is Cognitive Remediation, or Neuropsychological Remediation, as it is sometimes called. Cognitive remediation is a therapeutic approach targeting specific cognitive functions, such as attention, organization, planning or memory that constitute individua...
PURPOSE To verify the effectiveness of a phonological remediation program in students with learning difficulties. METHODS Forty students from 2nd to 4th grades, from both genders, ranging from eight years and one month to 12 years old, were divided into two groups: Group 1 (G1), composed by 20 students with learning disabilities; and Group 2 (G2), composed by 20 students without learning disa...
BACKGROUND Few randomised clinical trials have examined the efficacy of an intervention aimed at improving psychosocial functioning in bipolar disorder. AIMS To examine changes in psychosocial functioning in a group that has been enrolled in a functional remediation programme 1 year after baseline. METHOD This was a multicentre, randomised, rater-masked clinical trial comparing three patien...
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