ghorban tower as an architectural monument is one of the outstanding resting- place of islamic era in hamadan city which has not been studied properly. previous studies on the tower concerning its architectural features or its historical background showed that the tower may be a place where a dignified religious man named khajeh hafez abol'ala hamadani berried inside in saljuk era and afte...

temperature restrictions on aqueous effluents dictate that streams with a temperature higher than the permitted level needed to pass through cooling systems to reduce the effluent temperature before discharge. in this study, by considering the grouping design rules based on pinch technology, an optimum design for a distributed effluent cooling system, has been developed. a counter-flow wet cool...

In commission of the Royal Netherlands Air Force and the City of Eindhoven we registered the number of birds aloft on Eindhoven Airport between August 1998 and July 1999 by visual techniques using binoculars. Observations were conducted during four days each month and lasted the full daylight period. Two methods were used: observations in a fixed volume covering a part of the runway and borderi...

BACKGROUND Joint replacement surgery is having an increasing demand as national healthcare systems confront an ever ageing population. Surgical complications associated with lower limb arthroplasty are well known but less investigation has been performed examining its effect on air travel, more specifically, unwanted and significant inconvenience caused to travelers going through airport securi...

The use of solar chimneys for energy production was suggested more than 100 years ago. Unfortunately, this technology has not been realized on a commercial scale, in large part due to the high cost of erecting tall towers using traditional methods of construction. Recent works have suggested a radical decrease in tower cost by using an inflatable self-supported tower consisting of stacked toroi...

Valves are usually used in conjunction with large water-tower storage structures. Large pipes carry water from the storage tower to the flush gutter. Valves are used at appropriate locations in the pipeline to control flush water flow to individual gutters. Figure 1 is a schematic layout of a flush system using storage towers, pipelines and valves to flush several gutters. Use of multiple, inte...

Abstract The Optimised Spacing Delivery (further referred to as OSD) tool has the objective of calculating necessary time spacing between two consecutive departing aircraft in order fulfil all required and separation constraints. OSD, developed SESAR 2020 Wave 1 [1] is based on analytical models [2] predict trajectory speed profiles. use this by Air Traffic Controller supports safe, consistent ...

HUB SIAASHING is a knowledge-based system that recommends contingency plans for American Airlines System Operations Control (SOC) during inclement weather or other airport disruptions where severe schedule reductions must be made. The system evaluates the current situation to determine flight cancellation, delay, and overfly candidates that will provide relief at the hub airport with minimal im...

With the wind turbines being produced toward to large scale and light weight, the flexibility of blade, drive mechanism and tower increase apparently. Loads suffered by wind turbines during operation become increasingly intricate. Some control approaches could be used to cut down these loads in orde to expand life cycle of generating sets. Aiming at the full load operation zone above rated wind...

Limousine Services Ltd. (Airport Limousine), a subsidiary of Swire Travel, one of the largest and oldest travel management companies in Hong Kong and widely recognized as the leader in service quality in the local travel industry. Swire Travel has more than 50 years of history and is part of the 145-year old worldwide Swire group. The main business of Airport Limousine is a 24-hour luxury limou...