نتایج جستجو برای: unep
تعداد نتایج: 501 فیلتر نتایج به سال:
تخریب منابع طبیعی در مناطق خشک یکی از مهمترین فرآیندهای بیابان زائی است که در مدل های مختلف بیابان زائی به صورتهای متفاوت به آن توجه شده است.یکی از مهمترین این روشها روش F.AO. UNEP می باشد که یکی از کاملترین و جامع ترین روشهای مبارزه با پدیده بیابان زائی است که برای از بین بردن بیابان زائی در جهان ارائه است(FAO-UNEP 1984 ) ولی طبق تجزیه و تحلیلی که بر روی این روش صورت گرفت این روش نیز به نوبه ...
Abstract Since the Escazú Agreement entered into force in 2021, many have looked forward to realization of its goal further entrenching environmental democratic rights and enabling sustainable development Latin America Caribbean (LAC) region. The severe related human challenges region caught global attention, is most timely pursuit contributing addressing situation. This article assesses qualit...
BACKGROUND Polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDFs) are highly toxic persistent organic pollutants (POPs), which can cause various health outcomes, such as cancer. As a part of the National and Sub-national Burden of Disease Study (NASBOD), we aimed to estimate dioxins and furans national emissions, identify their main sources, estimate daily intake doses, and assess t...
The cytochromes P450 (CYP) comprise a large multigene family of hemethiolate proteins which are of considerable importance in the metabolism of xenobiotics and endobiotics. CYP enzymes in humans as well as in other species have been intensively studied during recent years (Pelkonen et al., 2008; Turpeinen et al., 2007). It is possible to characterize metabolic reactions and routes, metabolic in...
This paper reviews three readily available cartographical databases (DBs), the Digital Chart of the World (DCW), the World Vector Shoreline (WVS) and 30 Arc-Second DCW Digital Elevation Models (DEM) all originating from the US Defense Mapping Agency (DMA). These are presumed strong candidates as cartographical data sources for strategic needs at several Consultative Group of International Agric...
A new analytical inversion method has been developed to determine the regional and global emissions of long-lived atmospheric trace gases. It exploits in situ measurement data from three global networks and builds on backward simulations with a Lagrangian particle dispersion model. The emission information is extracted from the observed concentration increases over a baseline that is itself obj...
This paper reviews three readily available cartographical databases (DBs), the Digital Chart of the World (DCW), the World Vector Shoreline (WVS) and 30 Arc-Second DCW Digital Elevation Models (DEM) all originating from the US Defense Mapping Agency (DMA). These are presumed strong candidates as cartographical data sources for strategic needs at several Consultative Group of International Agric...
This is the seventh publication in a new Technical Series that regroups the Guidelines, Overviews, Technical Reviews and Workshop Proceedings previously published by UNEP/IEO. The regrouping into a single series will ensure a greater cohesion among future publications, and allows a single document to include the various elements of IEO work that had earlier been presented separately. As before,...
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