the risks of fire and explosion in oil and gas industry need to be managed. the objectives of the present study were to assess the risk of fire and explosion in iso-max unit of tehran oil refinery using dow’s fire and explosion index and to study the influences of the controlling methods. the latest version of dow fire and explosion index guideline was applied to calculate the fire and explosio...

The present study used different categories of organized sector manufacturing industries pooled data for the periods of 1981-82 and 2007-08 in Haryana state (India). The present undertaking seeks to analyze the inter-temporal and inter-industry comparison of total factor productivity (TFP) measured by Malmquist productivity index - an application of DEA which calculates the indices of TFP and i...

quantitative assessment is the most important means to identify hazard potential and manage risk for an industrial process. the implement of quantitative assessment in the early stage will help to develop inherently safer process, eliminating the hazard and reduce the possibility of accidental chain events and the magnitude of consequences. in this paper, after reviewing the presently available...

This letter presents a novel open source design of the Y-shaped hexarotor Unammend Aerial Vehicle (UAV), and proves both in theory real experiments its robustness to failure any propellers. An intuitive geometrical interpretation UAV static hovering ability is presented, through which different coplanar/collinear designs analyzed. Following presented interpretation, we also show conditions that...

OBJECTIVES To determine the causes of delayed presentation in breast cancer patients at Korle Bu Teaching Hospital (KBTH), and reasons for patients absconding before and during treatment. DESIGN Questionnaire survey. SETTING Out patient departments and surgical wards of KBTH. PARTICIPANTS Women newly diagnosed with breast cancer and breast cancer patients who previously absconded and were...

The low index subgroups process may be used to nd subgroups of small index in a nitely-presented group G, and hence to determine all transitive permutation representations of G of small degree. A number of successful applications will be discussed, in particular to the construction of graphs and surfaces with large automorphism groups. Further, two useful adaptations of the process will be desc...