نتایج جستجو برای: airport control tower
تعداد نتایج: 1344992 فیلتر نتایج به سال:
Introduction: Workplace air quality is a very important factor in community health and is measured by measuring and evaluating airborne contaminants. One of these airborne pollutants is ammonia gas. Spray towers are important components of air pollution control. The aim of this study was to investigate the effects of using diluted sulfuric acid solution on the efficiency of ammonia removal in a...
Introduction: Persecutors of aircraft noise at an airport has a close relationship with the alternate of landing and take-off weight of the aircraft and operations planning during the night. Now aircraft that spill in Yazd airport and take-off of aircraft is of jet engines or so-turbofan mean that the resulting sound will be very high. Methods: In this descriptive, cross-sectional me...
The present paper describes the designing of a thermally and economically optimum mechanical draft counter-flow wet cooling tower. The design model allows the use of a variety of packing materials in the cooling tower toward optimizing heat transfer. Once the optimum packing type is chosen, a compact cooling tower with low fan power consumption is modelled within the known design variables....
since the energy analysis considers the quantity of energy, it cannot show the performance of the cooling tower. therefore, in order to optimize the performance of the tower and also the process which the cooling tower is a part of it, it is necessary to analyze the energy and exergy of the tower simultaneously. in this paper, the energy and exergy of one of the cooling towers of khuzestan stee...
Background and Objectives: Mental and physical fatigue of airport staff reduces their job standards and productive concentration. The objective of this study was to examine sleep quality and its effect on cognitive failure and job performance among airport staff. Methods: In this descriptive-analytical study, 200 staff of an airport were chosen by simple random sampling method. The data coll...
The Federal Aviation Administration (FAA) plans to implement a controller-pilot data-link communication (CPDLC) system in the near future. Unlike conventional voice-channel communication systems, the CPDLC system allows pilot and controllers to exchange messages via specially designated data links thus reducing voice communication congestion. Under the proposed CPDLC system, pilots can see an a...
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