نتایج جستجو برای: blast operations

تعداد نتایج: 157809  

Journal: :journal of research in health sciences 0
rostam golmohammadi omid giahi mohsen aliabadi ebrahim darvishi

background: noise pollution is currently a major health risk factor for workers in industries. the aim of this study was to investigate noise pollution and implement a control intervention plan for blast furnace in a steel industry. methods: the measurement of sound pressure level (spl) along with frequency analysis was done with the sound-level-meter cell-450 . personal noise exposure was perf...

2013
Nurhayati

C-BLAST system is detection algorithm of the MIMO (Multplei-Input Multiple Output) systems that is designed to achieve good multiplexing gain. In the C-BLAST systems, every antenna transmits has its own independently coded with power control. In this paper we use MMSE (Minimum Mean Square Error) detection to achieve the performance of error rate for the C-BLAST systems. Simulation results show ...

2009
Marianne M. Lee Michael K. Chan Ralf Bundschuh

A SIB-BLAST web server (http://sib-blast.osc.edu) has been established for investigators to use the SimpleIsBeautiful (SIB) algorithm for sequence-based homology detection. SIB was developed to overcome the model corruption frequently observed in the later iterations of PSI-BLAST searches. The algorithm compares resultant hits from the second iteration to the final iteration of a PSI-BLAST sear...

2011
Pamela B. L. Pun Enci Mary Kan Agus Salim Zhaohui Li Kian Chye Ng Shabbir M. Moochhala Eng-Ang Ling Mui Hong Tan Jia Lu

The incidence of blast attacks and resulting traumatic brain injuries has been on the rise in recent years. Primary blast is one of the mechanisms in which the blast wave can cause injury to the brain. The aim of this study was to investigate the effects of a single sub-lethal blast over pressure (BOP) exposure of either 48.9 kPa (7.1 psi) or 77.3 kPa (11.3 psi) to rodents in an open-field sett...

2015
Gregory A. Elder Miguel A. Gama Sosa Rita De Gasperi James Radford Stone Dara L. Dickstein Fatemeh Haghighi Patrick R. Hof Stephen T. Ahlers

Blast-related traumatic brain injury (TBI) has received much recent attention because of its frequency in the conflicts in Iraq and Afghanistan. This renewed interest has led to a rapid expansion of clinical and animal studies related to blast. In humans, high-level blast exposure is associated with a prominent hemorrhagic component. In animal models, blast exerts a variety of effects on the ne...

F. Azarsina, M. Tajari N. Ashrafi Khorasani

Explosion and fire on an offshore rig can lead to its minor or complete damage and sinking which means the loss of life or environmental pollution. Hence the use of techniques such as blast wall is crucial to reduce the detrimental effects. These blast walls are designed for explosion wave of length between 0.1 to 1 of load mainly to protect the personnel and critical sections. In this research...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Aurélie Jean Michelle K Nyein James Q Zheng David F Moore John D Joannopoulos Raúl Radovitzky

Despite recent efforts to understand blast effects on the human brain, there are still no widely accepted injury criteria for humans. Recent animal studies have resulted in important advances in the understanding of brain injury due to intense dynamic loads. However, the applicability of animal brain injury results to humans remains uncertain. Here, we use advanced computational models to deriv...

Journal: :CoRR 2016
Thomas Bamford Kamran Esmaeili Angela P. Schoellig

Accurate measurement of blast-induced rock fragmentation is of great importance for many mining operations. The post-blast rock size distribution can significantly influence the efficiency of all the downstream mining and comminution processes. Image analysis methods are one of the most common methods used to measure rock fragment size distribution in mines regardless of criticism for lack of a...

Journal: :مهندسی عمران فردوسی 0
علیرضا حبیبی نیما خالدی

while significant advances have been made on the blast analysis, applications of nonlinear analysis of structures under explosion have been limited to the frames and structural behavior of bridges subjected to blast is an issue that has attracted attention of researchers in recent years. nonlinear dynamic analysis can be lead to the most accurate responses of the structure under blast but the u...

Journal: :Metals 2022

Low-carbon operation technologies of the blast furnace (BF) are crucial for reducing carbon dioxide emissions from steelmaking industry. The variation characteristic permeability and structure in a BF lumpy zone has critical impact on achieving low-carbon operations. Still, their influences have not been fully understood, related studies very limited. To solve problem deteriorating furnaces aft...

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