An aqueduct is a bridge-like structure that supports canal passing over river or low ground, and it an important part of water conveyance system. Aqueduct piers are extremely vulnerable to damage during strong earthquakes can result in structural collapse. Further, excessive seismic displacement will also fracture aqueduct’s rubber water-stop interrupt the normal service after earthquake. There...

in this study, technical and operational issues of 45 qanats in hamadan, semnan and khorasan razavi provinces were studied and executive strategies to improve water management in qanats were recommended. 15 qanats were selected and studied in each of the provinces. discharge, quantity and quality of qanat water, geometric characteristics including longitudinal slope, length, and flow section ar...

A critical issue in government modernisation lies in defining and implementing mechanisms that can facilitate inter-organisational learning among different local authorities. These mechanisms should support bottom-up diffusion of locally-produced innovation, which in driving change in public systems seems to be a more effective way than top-down NPM-steered reforms. In this sense, there's the n...

The capacity of ureteral stents to enhance the conveyance of urine from kidney to bladder is the critical function for patients that require them. The flow path in and around the stent is not a trivial one, particularly if some elements of peristalsis are present in the ureter. This paper details a numerical flow simulation for an axially symmetric stented ureter segment. The flow of urine thro...

The Nakdong River Estuary Barrage (NREB) prevents salt-water intrusion but causes sedimentation problems in the Lower Nakdong River in South Korea. Its mitigation requires mechanical dredging to maintain the flood conveyance capacity during typhoons. This analysis focuses on the possibility of replacing mechanical dredging with sediment flushing through gate operations changes at NREB. The new ...

Bimetallic hydride NaMgH(3) is used for the first time as a vehicle to enhance hydrogen release and uptake from LiNH(2). The combination of NaMgH(3) with LiNH(2) at a molar ratio of 1 : 2 can release about 4.0 wt% of hydrogen without detectable NH(3) emission in the temperature range of 45 °C to 325 °C and exhibiting superior dehydrogenation as compared to individual NaH and/or MgH(2) combined ...

Paolo Freire's theory of critical thinking shows remarkable similarities to the principles supported by health education. In his capacity as Brazilian educationalist, Freire emphasized man's active participation in his own development. Without this active involvement, growth and development become quite impossible to attain. Freire's theory is therefore generally well suited for use by those su...

Due to the boom in world trade, port authorities are looking into ways of making existing facilities more efficient. One way to improve efficiency, increase capacity, and meet future demand is to use advanced technologies and automation in order to speed up terminal operations. In this paper, we design, analyze, and evaluate four different automated container terminal (ACT) concepts. These conc...