نتایج جستجو برای: diffuse conduit flow system
تعداد نتایج: 2675934 فیلتر نتایج به سال:
We hypothesized that curcumin would improve resistance and conduit artery endothelial function and large elastic artery stiffness in healthy middle-aged and older adults. Thirty-nine healthy men and postmenopausal women (45-74 yrs) were randomized to 12 weeks of curcumin (2000 mg/day Longvida®; n=20) or placebo (n=19) supplementation. Forearm blood flow response to acetylcholine infusions (FBFA...
OBJECTIVES To assess safety and clinical performance of a novel bioabsorbable vascular graft in pediatric patients with univentricular cardiac malformation who received surgical correction via an extracardiac cavopulmonary conduit. METHODS The implanted graft material is designed to attract patient's own cells and proteins, which trigger a cascade of physiological events leading to endogenous...
This study tests the hypothesis that arterial vascular stiffening adversely influences in situ left ventricular contractile function and energetic efficiency. Ten reflex-blocked anesthetized dogs underwent a bypass operation in which a Dacron graft was sewn to the ascending aorta and connected to the infrarenal abdominal aorta via a plastic conduit. Flow was directed through either native aorta...
The existence of karst compromises the safety underground engineering, especially during tunnel excavations. Karst conduits are uncovered through excavations, which may lead to a water–sand inrush disaster. Taking vertical conduit as an example, process could be viewed being similar whereby mixture flows discharge opening storage bin. In this study, based on force analysis non-aqueous sand body...
OBJECTIVE The aim of our study was to analyse experience with repair of truncus arteriosus with interrupted aortic arch. METHODS Between 1993 and 2004, eight consecutive patients underwent repair of truncus arteriosus with interrupted aortic arch. The median age was 6.5 days (range 1-85 days) and median weight was 3.2 kg (range 2.6-4.8 kg). Five patients had type A and 3 patients had type B a...
OBJECTIVES Uterine vascular resistance (UVR) is the ratio of systemic mean arterial pressure to mean uterine blood flow and is sensitive to changes in small arteries and arterioles. However, it provides little or no insight into changes in large, conduit arteries. Fluctuations in estrogen (E2) and progesterone (P4) levels during the ovarian cycle are thought to cause uterine resistance artery v...
Poor quality or inadequate length of venous and mammary conduits, or both, a severely calcified or atherosclerotic aorta, or diffuse coronary atherosclerosis are situations cardiovascular surgeons will be facing with increasing frequency. These conditions are more common to the increasing number of patients requiring reoperation for advancing disease and to the growing number of older patients ...
When volcanoes are active, there are characteristic signs such as ground movement, sounds, heat and ejected material. Each of these signs is a result of, and hence an information source for, fluid motion in volcanic conduits. Here we briefly review some of the links between these signs and fluid flow processes and suggest future directions that should allow advancement of eruption forecasting a...
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