Fluid pumping losses are one of the major sources of torque loss in modern Continuously Variable Transmissions (CVTs) due to the high pressures and flow rates required in the hydraulic control system. To reduce the magnitude of these losses, researchers at UC Davis have developed a servo-pump control system for CVTs designed for improved pressure and ratio controllability with minimal power con...

This work analyzes the influence of the discretization error contained in the Finite Element (FE) analyses of each design configuration proposed by structural shape optimization algorithms over the behaviour of the algorithm. If the FE analyses are not accurate enough, the final solution will neither be optimal nor satisfy the constraints. The need for the use of adaptive FE analysis techniques...

With the increase in capacitor voltage transformer (CVT) operation life, CVT impedance changes, and short-time switching of overhead lines, it is very easy to cause a transient oscillation accident which participates, reduce insulation level CVT, even induce regional power grid easily breakdown, after long-term with defects. In this paper, whole network, including generator, grid, consumer, mod...

background: muslim women tend to postpone their menstrual period using short course oral contraceptives (oc) during ramadan, muslims fasting month. recently, many cases of stroke, particularly cerebral vein thrombosis (cvt), have been reported in ramadan. objective: this work studies the incidence of cvt and its relation to ramadan. materials and methods: this is a cohort study conducted from o...

INTRODUCTION Cerebral venous thrombosis (CVT) is a well known but poorly reported entity. Most of the studies and registries related to CVT are reported from European countries. No large multi-center or multi- national data base or registry has been reported from Asian countries. CVT is not uncommon in Asia especially in south Asian subcontinent including India, Pakistan and Bangladesh. One stu...

Cerebral venous thrombosis (CVT) often affects young patients and can result in substantial disability and death. Though mortality rates among patients with CVT have declined, new epidemiological data suggests a higher annual incidence of CVT than previously reported. A diagnosis of CVT is associated with subsequent risk of venous thromboembolism, including deep vein thrombosis (DVT), pulmonary...