نتایج جستجو برای: respiration depth
تعداد نتایج: 199671 فیلتر نتایج به سال:
Background Although both methods of spontaneous respiration and controlled ventilation during anesthesia are safe and effective for managing children with foreign body aspiration, there is no consensus from the literature as to which technique is optimal. This study aimed to determine the outcomes of anesthetic techniques in pediatric rigid bronchoscopy for foreign body removal. Materials and M...
Throughout the ocean, countless small animals swim to depth in the daytime, presumably to seek refuge from large predators1,2. These animals return to the surface at night to feed1,2. This substantial diel vertical migration can result in the transfer of significant amounts of carbon and nutrients from the surface to depth3–7. However, its consequences on ocean chemistry at the global scale hav...
To investigate the degree of forest degradation and the effect of land use change on selected soil quality attributes in loess-derived landforms, samples were taken from different land uses including forest, rangeland, degradated rangeland and farmland in Pasang watershed located in the Galikesh area of Golestan province (37°16'N, 55°30'E). The annual average temperature and mean precipitation ...
light is never being distributed homogeneously and it forms a gradient over biomass. the unidirectional nature of light gives rise to a vertical gradient of light intensity as a function of depth. the maximum depth of the light zone suitable for phytoplankton photosynthesis is designated as the euphotic depth. this study was designed to test the hypothesis of mixing depth of phytoplankton and i...
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