نتایج جستجو برای: dispersion height
تعداد نتایج: 161957 فیلتر نتایج به سال:
enhancement of antioxidant capacity of plants by natural antioxidants obtained from medicinal plants can be a simple way to produce stress tolerant plants. zataria multiflora essential oil (zo) is one of the useful antioxidants with potent antioxidant activity. zo is insoluble in water and can be degraded by light, oxygen, and high temperature. incorporation of zo into poly vinyl alcohol (pva) ...
Numerical modelling of the passive control of air pollution in asymmetrical urban street canyons using refined mesh discretization schemes, This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof...
As part of a study using lake sediments to determine the extent and causes of human impacts to lakes along an east–west transect following the Yangtse River, sediment cores were taken from Taihu in eastern China. Previous studies have focussed on the impacts of direct inputs of pollutants from municipal and industrial wastewater but little work has been undertaken on trends in atmospheric depos...
This paper analyzes the effect of systems to manage environmental aspects on environmental performance at individual polluting facilities. Regulated polluting facilities are increasingly embracing pollution minimization strategies that involve the adoption of broadly defined systems to manage environmental aspects. Despite a meaningful empirical literature, whether or not these systems lead to ...
This paper introduces two changes of the turbulence parameterization for the EMEP (European Monitoring and Evaluation Programme) Eulerian air pollution model: the replacement of the Blackadar in stable and O’Brien in unstable turbulence formulations with an analytical vertical diffusion profile (K(z)) called Grisogono, and a different mixing height determination, based on a bulk Richardson numb...
The trait-based approach shows that ecosystem function is strongly affected by plant functional diversity as reflected by the traits of the most abundant species (community-weighted mean, CWM) and functional dispersion (FDis). Effects of CWM and FDis individually support the biomass ratio hypothesis and the niche complementarity hypothesis. However, there is little empirical evidence on the rel...
High-Resolution Analysis of Wind Flow Behavior on Ship Stacks Configuration: A Portuguese Case Study
Atmospheric emissions related to harbor-related activities can significantly contribute air pollution of coastal urban areas and so, could have implications the citizens’ health that live in those areas. Of great concern is local impact are generated while ships at berth, since not all types switch off main engines. This paper intends investigate influence stack configuration for generic cargo ...
هدف از این مطالعه بدست آوردن یک پیش بینی تقریبی از پیشرفت ابر آلودگی در آبخوانهای زیرزمینی با داشتن یک منبع آلودگی خطی می باشد. این روش علاوه بر اینکه از نظر اقتصادی مقرون به صرفه است روشی سریع بوده و احتیاج به زمان زیاد جهت اجرای مدل و بدست آوردن نتیجه ندارد. بنابراین با توجه به هدف ، روش مورد نظر در مطالعه یک مدل آنالیتیک است که جهت پیش بینی پیشرفت ابر آلودگی تحت تاثیر advection و dispersion ...
The apparent height and lateral extent of very small metallic clusters and particles adsorbed on flat substrates have been calculated for frequency-modulation non-contact atomic force microscopy (ncAFM). The ncAFM scanning tip was modelled as a Si sphere covered by 1 nm of SiO2. This tip sphere of either 5 or 20 nm total radius (including an SiO2 layer) is attached to a cantilever of spring con...
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