نتایج جستجو برای: hydraulic resistance
تعداد نتایج: 402559 فیلتر نتایج به سال:
The results of an experimental investigation of kerbside bridge deck drainage units are presented. The conveyance capacity, resistance coefficients and sediment transporting efficiencies of different types of drainage unit used in shallow bridge drainage decks are examined over a range of bed gradients likely to be encountered in practice. The use of a V-shaped cross section is shown to be part...
We examined the effects of graded reduction of afterload on the global left ventricular and regional myocardial functions as well as coronary hemodynamics in hearts with regional ischemia. We used isolated, paced canine hearts that were loaded with a hydraulic system that simulated the aortic input impedance of the dog's arterial tree. The loading conditions could be quantitatively and sequenti...
The Motion Foot is a new foot/ankle system that offers near-normal ankle range of motion via a hydraulic ankle (ROM = 50 deg), paired with an energy-storing foot plate. This system has been developed to offer to above-knee and below-knee prosthesis wearer: 1) improved comfort, 2) reducedloads on proximal joints and 3) improved stability. Improved comfort and reduced proximal joint loading is ac...
Climate change is expected to increase the frequency and intensity of droughts and heatwaves in Europe, leading to effects on forest growth and major forest dieback events due to hydraulic failure caused by xylem embolism. Inter-specific variability in embolism resistance has been studied in detail, but little is known about intra-specific variability, particularly in marginal populations. We e...
Hydraulic failure is one of the main causes of tree mortality in conditions of severe drought. Resistance to cavitation is known to be strongly related to drought tolerance and species survival in conifers, but the threshold of water-stress-induced embolism leading to catastrophic xylem dysfunction in angiosperms has been little studied. We investigated the link between drought tolerance, survi...
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