this research was undertaken to evaluate and determine the risk of gas fluids and leakage of persian gulf star refinery on the environment in bandar abbas. through collection and compilation of research findings, we attempted to identify and work on factors leading to environmental risks. the risk factors were identified by hazop team and the risk score was calculated by multiplying the probabi...

OBJECTIVE To introduce the notion of noninvasive mechanical ventilation as an alternative for invasive ventilation in children, describing advantages and disadvantages, indications, and the process of equipment installation. SOURCE OF DATA Literature review through PubMed/Medline, using as source articles focusing on noninvasive ventilation in pediatric populations, as well as consensus state...

BACKGROUND This study seeks to increase clinical operational efficiency and accelerator beam consistency by retrospectively investigating the application of statistical process control (SPC) to linear accelerator beam steering parameters to determine the utility of such a methodology in detecting changes prior to equipment failure (interlocks actuated). METHODS Steering coil currents (SCC) fo...

In industries, Preventive Maintenance (PM) is not a new practice to minimise the sudden breakdown of production machine. PM will be performed at predetermine intervals to provide a balance between failure cost and component utilisation (aging). However, most of PM interval is based on experience or original equipment manufacturer (OEM) recommendations. Consequently, the benefits from PM are not...

3rd generation partnership project (3GPP) Long Term Evolution-Advanced (LTE-A) defines a wireless network standard for high packet transmission rate and low packet latency provisions. When a user equipment (UE) moves away from signal range of serving cell may cause the received signal strength weakened, even if disconnected. To solve this problem, it is necessary to execute handover procedure. ...

this descriptive study is carried out to determine the effectiveness of family planning programmes in iran for years 1991-96. the study revealed the following outlines: contraceptives prevalence rates increased from 42% to 67% during years 1991-96. zaro couples years of protection increased for norplant, injectable contraceptive, iud, vasectomy and tubectomy, but for candom it is decreased in y...

conclusions this study shows that an adequate nutritional support, in patients with severe burn injury, can improve sofa score. it is also more cost-effective, resulting in a shorter los in hospital. background severe burned patients developed metabolic imbalances and systemic inflammatory response syndrome (sirs), which can lead to malnutrition, impaired immunologic response, multiple organ fa...