نتایج جستجو برای: mostly anthropogenic activities in contrast
تعداد نتایج: 17038725 فیلتر نتایج به سال:
Mass, major ionic components (MICs) of PM2.5, and related gaseous pollutants (SO2, NO(x), NH3, HNO2, and HNO3) were monitored over six locations of different anthropogenic influence (industrial, urban, suburban, and rural) in Belgium. SO4(2-), NO3-, NH4+, and Na+ were the primary ions of PM2.5 with averages diurnal concentrations ranging from 0.4-4.5, 0.3-7.6, 0.9-4.9, and 0.4-1.2 microg m(-3),...
investigating the feasibility of a proposed model for geometric design of deployable arch structures
deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
A strongly stratified water structure and a densely populated catchment make the Baltic Sea one of most polluted seas. Understanding its circulation pattern time scale is essential to predict dynamics hypoxia, eutrophication, pollutants. Anthropogenic 236U 233U have been demonstrated as excellent transient tracers in oceanic studies, but unclear input history inadequate long-term monitoring rec...
The United Nation’s Sustainable Development Goal Life Below Water (SDG-14) aims to “conserve and sustainably use the oceans, seas, marine resources for sustainable development”. Within SDG-14, targets 14.1 14.2 deal with pollution adverse impacts of human activities on aquatic systems. Here, we present a remote-sensing-based analysis short-term changes in Vembanad-Kol wetland system southwest I...
Introduction: Current data on changes in contraceptive use is required to prevent unintended pregnancies. This study aims to study trends, and patterns of contraceptive use over the past fourteen years. Methods: This survey research uses data from three fertility surveys conducted in 2000, 2009, and 2014 respectively among representative samples of 1396, 2,934 and 3012 married women aged 15-49...
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