نتایج جستجو برای: vents
تعداد نتایج: 2313 فیلتر نتایج به سال:
Until recently, hydrothermal vents were not considered to be an important source to the marine dissolved Fe (dFe) inventory because hydrothermal Fe was believed to precipitate quantitatively near the vent site. Based on recent abyssal dFe enrichments near hydrothermal vents, however, the leaky vent hypothesis [Toner BM, et al. (2012) Oceanography 25(1):209-212] argues that some hydrothermal Fe ...
PURPOSE This study examined whether heat strain during low states of chemical and biological protection (CB(low)) impacted tolerance time (TT) after transition to a high state of protection (CB(high)) and whether vents in the uniform reduced heat strain during CB(low) and increased TT. METHODS There were eight men who walked at 35 degrees C in CB(low), and then transitioned to CB(high). Subje...
How did life originate on Earth? This has always been a challenging topic generating continuous interest among different fields, such as chemistry, biology, physics, and engineering. The “primordial soup”, which has been the most commonly accepted theory, fails to explain how molecules present at low concentrations in the prebiotic oceans could create the building blocks of life, such as protei...
The objective of this paper is to investigate the energy efficiency of air conditioning via the viewpoint of the vents arrangement. In the research, a real typical convenience store located in Taichung, Taiwan is selected as a case study. The computational fluid dynamic (CFD) technique is adopted to simulate the flow, thermal and humidity distribution inside the convenient store under both clos...
Several varieties of seafloor hydrothermal vents with widely varying fluid compositions and temperatures and vent communities occur in different tectonic settings. The discovery of the Lost City hydrothermal field in the Mid-Atlantic Ridge has stimulated interest in the role of serpentinization of peridotite in generating H(2)- and CH(4)-rich fluids and associated carbonate chimneys, as well as...
Hydrocarbon vents have recently been reported to contribute considerable amounts of dissolved organic carbon (DOC) to the oceans. Many such hydrocarbon vents widely exist in the northern South China Sea (NSCS). To investigate if these hydrocarbon vent sites release DOC, we used a real-time video multiple-corer to collect bottom seawater and surface sediments at vent sites. We analyzed concentra...
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