نتایج جستجو برای: drying and wetting cycles
تعداد نتایج: 16841302 فیلتر نتایج به سال:
126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...
Physical and chemical weathering of arsenic-enriched mine wastes can lead to the mobilization dispersal contaminated sediments into surrounding (residential) areas. Additionally, seasonal effects during dry rainy seasons affect contaminant bioaccessibility in ways that may significantly influence risk estimates chronic arsenic exposure for residents living near mining sites. Rainwater-transport...
In this paper, several transversely cracked RC beams, self-anchored in a three-point bending mode, were prepared and subjected to NaCl solution drying–wetting cycles. Based on two experimental results obtained after 15 and 30 cycles, respectively, the profiles of free chloride concentration at different sections of sound and cracked concretes were presented and analyzed. The depth of surface co...
The strength and deformation properties of tailing materials are strongly affected by their hydromechanical history including the cycles desiccation re-saturation they undergo due to often layered deposition process. current study reviews fundamental characteristics some commonly used constitutive models for partially saturated soils, namely Barcelona Basic Model (BBM), Glasgow Coupled (GCM), a...
It is increasingly acknowledged that climate change is influencing terrestrial ecosystems by increased drought and rainfall intensities. Soil microbes are key drivers of many processes in terrestrial systems and rely on water in soil pores to fulfill their life cycles and functions. However, little is known on how drought and rainfall fluctuations, which affect the composition and structure of ...
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