نتایج جستجو برای: critical uniform lateral pressure
تعداد نتایج: 1086178 فیلتر نتایج به سال:
T HE term “ effective pressure ” has been aptly applied by Henderson and Barringer l to the difference between intrathoracic and intra-auricular pressures (measured, to be exact, at the auriculo-ventricular valves immediately before ventricular diastole) . That this represents the actual pressure brought into play in ventricular filling seems plausible because, as may be inferred from experimen...
critical thinking ability has an important role in education. accordingly, scholars around the world are searching for new ways for teaching and improving students critical thinking ability. in line with the studies in efl contexts supporting the positive relationship between critical thinking and writing performances, this study investigated the differential effects of halverson’s critical thi...
in this study, the relationship between teachers’ creative and critical thinking skills and their reflectivity in teaching was investigated. to this end, three questions were raised. these questions were intended to determine whether there was a significant relationship between teachers’ creative thinking skills and their reflectivity in teaching; whether there was a significant relationship be...
Background: Cardiac herniation is a fatal post pneumonectomy complication. We report the signs, clinical findings, diagnosis and management of a patient with post pneumonectomy cardiac herniation.Case report: A 34-year-old man with lung cancer underwent left pneumonectomy with partial pericardiectomy in the right lateral decubitus position. At the end of the surgery, cardiovascular collapse, se...
The axially compressed buckling of a double-walled carbon nanotabe surrounded by an elastic medium using the energy and the Rayleigh-Ritz methods is investigated in this paper. In this research, based on the elastic shell models at nano scale, the effects of the van der Waals forces between the inner and the outer tubes, the small scale and the surrounding elastic medium on the critical bucklin...
abstract weirs are the most common structures for discharge measurement in engineering research. streamline curvature, non hydrostatic pressure distribution on weir and nappe adherence to the weir lead to differences between calculated and measured discharges. thus discharge coefficient, which is the ratio of real and theoretic discharges, is usually less than unity. in circular weirs the press...
the ground reaction curve (grc) is a vital component of the convergence-confinement method, which possesses many applications in the underground space designs. it defines a relation between the tunnel wall deformations and the ground pressure acting on the tunnel walls. generally, grc includes descending and ascending branches. according to many researchers, the descending branch trend for the ...
In this issue of the Journal of Applied Physiology, Kairaitis et al. (9) examine the control of pharyngeal extraluminal tissue pressure by mandibular advancement and jaw position. Utilizing a novel approach for measuring peripharyngeal tissue pressures, they demonstrated that mandibular advancement decreased tissue pressures anterior and lateral to the airway lumen. Decreases in the lateral per...
Collapsibility of the upper airways has been identified as an important pathogenic factor in obstructive sleep apnea (OSA). Objective measures of collapsibility are pharyngeal critical pressure (Pcrit) and resistance of the upstream segment (Rus). To systematically determine the effects of sleep stage and body position we investigated 16 male subjects suffering from OSA. We compared the measure...
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