OBJECTIVE Previous trials comparing coronary artery bypass grafting (CABG) with or without extracorporeal circulation have mainly enrolled selected patients at younger age and low risk. Patient-reported health-related quality of life has not been significantly different. We compared health-related quality of life in elderly moderate to high-risk patients randomized to either off-pump or on-pump...

Details of three cases of ruptured thoracic aorta are presented with reference to important diagnostic features, particularly hypertension, radiograph appearances and development of murmurs. An account of left ventriculo-aortic support for the distal circulation is given. This uses the ventricle as the pump, in circumstances where left atrio-femoral bypass may not be practica:ble, and is shown ...

Thermography is a predictive maintenance technique that can be used to identify machine breakdowns. has been widely applied, especially for monitoring purposes of thermal fluid engines and heat exchangers. This paper discusses the distribution occurs in multistage centrifugal pump system with closed flow circulation. Excessive an indicator damage system. The test was carried out on nine-stage c...

In this article, we present a specific shape of disk laser which is side-pumped by four non-symmetric hollow- ducts. The use of non-symmetric hollow duct based on two goals of the uniformity of the pump light distribution profile and the homogeneity of pump light profile through the disk. First of all we simulated the pump light distribution in the disk by using Monte-Carlo ray tracing method. ...

BACKGROUND Off-pump coronary artery bypass grafting has been accused of possibly compromising graft patency. Sixteen slice computed tomography has shown good diagnostic accuracy in the assessment of coronary bypass graft patency when compared with conventional coronary artery angiography and is less invasive. The study hypothesis is that coronary artery bypass grafting (CABG) performed without ...

using a new numerical model, the pump-to-signal relative intensity noise (rin) transfer in singlepumpfiber optical parametric amplifiers for low modulation frequencies is investigated. the model includesfiber loss, pump depletion, as well as the gain saturation, and therefore, it can describe the practicalcircumstances associated with various applications of fiber optical parametric amplifiers....

The internal flow circulation dynamics of a liquid drop moving in a co- or counter-flowing gas stream has been numerically studied. The present work is concerned with the time accurate numerical solution of the two phase flow field at the low Mach number limit with an appropriate volume tracking method to capture motion and deformation of a liquid drop. It is shown that relative velocity betwee...

In order to improve the mathematical model of working process above-bit ejection system for conditions its asymmetric rotation in well, a method modeling circulating injected flow using hydrodynamic vortex function, center which is shifted relative axis mixing chamber jet pump, has been developed. rotating movement flow, concept circulation vector translational velocity liquid along closed circ...

Background—Off-pump coronary artery bypass grafting compared with coronary revascularization with cardiopulmonary bypass seems safe and results in about the same outcome in low-risk patients. Observational studies indicate that off-pump surgery may provide more benefit in high-risk patients. Our objective was to compare 30-day outcomes in high-risk patients randomized to coronary artery bypass ...

For a long period of time, design and manufacturing technology of high flow rated vertically suspended pumps (VSPs) which have an extensive applications in many industries such as water and wastewater, mining, petrochemical and oil and gas industries, used to be imported from European countries. For the first time in Iran's pump industry, with the support of Ministry of Petrochemical[ah1]  and ...