نتایج جستجو برای: soil and air resources

تعداد نتایج: 16925634  

مصباح, دکتراشرف السادات,

ABSTRACT: In april 1986 nuclear accident of Chernobyl's reactor (Unit.No4) released a significant amounts (50 Mci) of highly dangerous radioactive materials into the atmosphere. Undoubtedly,some of these radionuclides have long lives and can contaminate the environment for,far distances Thus, it is highly important to measure presence of radionuclides in air ,water soil and agriculture product...

2004
H. Y. Mok M. C. Wong Y. H. Kwok

The Hong Kong Observatory has been continuously monitoring the environmental gamma absorbed dose rates in the air in Hong Kong since the late 1980’s. Spatial and seasonal variations in the environmental gamma absorbed dose rate in the air in Hong Kong have been evaluated. The spatial variations are found to be related to the variation in the geological structure across the territory and the sea...

2008
Mehrez Zribi Aurélie Le Morvan Nicolas Baghdadi

The objective of this paper is to present the contribution of a new dielectric constant characterisation for the modelling of radar backscattering behaviour. Our analysis is based on a large number of radar measurements acquired during different experimental campaigns (Orgeval'94, Pays de Caux'98, 99). We propose a dielectric constant model, based on the combination of contributions from both s...

Journal: :Plant biology 2013
T M Kuster M Arend P Bleuler M S Günthardt-Goerg R Schulin

Global climate change is expected to increase annual temperatures and decrease summer precipitation in Central Europe. Little is known of how forests respond to the interaction of these climate factors and if their responses depend on soil conditions. In a 3-year lysimeter experiment, we investigated the growth response of young mixed oak stands, on either acidic or calcareous soil, to soil wat...

2011
Scott A. Waisner Victor F. Medina Michael A. Jones Catherine C. Nestler

The U.S. Air Force used the chlorinated pesticide, chlordane, to control termites around base housing until it was banned in 1988. As bases are closed, contracted, or realigned, soil issues associated with this pesticide must be addressed. One issue that is not well understood is chlordane volatility. There are documented cases where chlordane applied to soil resulted in vapor intrusion into bu...

The protection and improvement of natural resources especially for desert vegetation need a comprehensive recognition of natural resources and relationship on Soil characteristics. One of the most important species growing in sabzevar desert is Stipagrostis pennata and in the current research the relationship between the physicochemical properties of the soils and growth characteristics of the ...

Journal: :journal of ornamental plants 2015
reza shahabi mohamadabadi mehran hoodaji davood hashemabadi mitra ataabadi

plants are the most common bioindicatorsused in air quality biomonitoring studies because they are immobile and they have more sensitive to the most prevalent air pollutants than humans and animals. to identify the concentrations and sources of heavy metals in ornamental plants of isfahan landscape, samples of leaves and soil around pinuseldarica and nerium oleander were collected at different ...

2009
Bradley Turk Jack Hughes

The original study in three Pennsylvania houses found that operation of active soil depressurization (ASD) radon control systems caused modest reductions in basement moisture levels. Additional, supplemental analysis has been conducted on the relationship between basement air and outdoor air moisture, and on the movement of airborne sources of basement air moisture under the influence of ASD sy...

2014
X. Wang C.-J. Lin X. Feng

A box model for estimating bidirectional air– surface exchange of gaseous elemental mercury (Hg0) has been updated based on the latest understanding of the resistance scheme of atmosphere–biosphere interface transfer. Simulations were performed for two seasonal months to evaluate diurnal and seasonal variation. The base-case results show that water and soil surfaces are net sources, while veget...

Journal: :نشریه تحقیق در علوم کشاورزی 0

kamran asgari1, hosein amini2   1- organic farming systems, wageningen university, wageningen, the netherlands   2- faculty of agriculture, khorasgan branch, islamic azad university, isfahan, iran     received: 5 february 2011 accepted: 23 november 2011         *corresponding author: email:[email protected]     abstract   effects of soil and atmosphere pollution on some heavy metals (fe, ...

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