The aim of this study was to evaluate the efficacy of a mobile laminar airflow (LAF) unit in reducing bacterial contamination at the surgical area in an operating theatre supplied with turbulent air ventilation. Bacterial sedimentation was evaluated during 76 clean urological laparotomies; in 34 of these, a mobile LAF unit was added. During each operation, settle plates were placed at four poin...

Meaningful Quality of Service (QoS) guarantees for`delay sensitive' networked applications must be end-to-end. This paper presents an experimental study of applications using computer workstation end-points. For the application experiments, the variables under study were the degree of multiprocessing, the transport protocol used (UDP or TCP), the process structure used by the application, and t...

Throughout the history of East Asian medicine, different kinds of acupuncture treatment experiences have been accumulated in classical medical texts. Reexamining knowledge from classical medical texts is expected to provide meaningful information that could be utilized in current medical practices. In this study, we used data mining methods to analyze the association between acupoints and patte...

introduction: the aim of this study was to report surgical strategies and clinical outcomes for thoraco-lumbar intradural lipomas. intraspinal lipomas are rare congenital histologically benign neoplasms, which account for less than 1% of all spinal cord tumors. these tumors are most frequently found in the lumbosacral area as components of a dysraphic state, however, intramedullary lipomas are ...

in this paper, a new topology for boost z-source inverterbased on switched-inductor cell is proposed. the operating modes of the proposed inverter are analyzed and also a suitable control method to generate the trigger signals of the inverter is presented. having a common earth between the input source and inverter and capability to generate a higher voltage gain by using lower amounts of the d...

establishing and operating private radio and television and its possible activity beside state radio and television is the selective method of administering radio and television in many countries worldwide. in legal system of iran, state run radio and television in article 44 of the constitution and interpretation of guardian council of mentioned article, establishing private radio and televisi...

in this paper effects of fractured sleepers on rail track vibration under moving wheelset have been investigated. two parallel rails of the track have been modeled as euler-bernoulli beams on elastic points as rail pads. also sleepers have been modeled as visco-elastic euler-bernoulli beams. it is assumed that, some sleepers under the rail track have been fractured and modeled by two beams. the...

The ITER tokamak, the next experimental step toward the development of nuclear fusion reactors, will explore the burning plasma regime in which the plasma temperature is sustained mostly by fusion heating. Regulation of the fusion power through modulation of fueling and external heating sources, referred to as burn control, is one of the fundamental problems in burning plasma research. Active c...

This paper reports results of a meta-analysis of construct reliability measures reported in MIS research. Based on 418 measures from 63 articles published in four major journals, it is observed that although scales developed more recently are no more reliable than those developed in the 1980s, the reliability of most scales reported in the literature is above generally accepted levels. However,...