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Dayr al Balah, Palestine

The Palestine Technical College is a vocational and technical college in Deir al-Balah, Palestine. The college offers 2-year diplomas in vocational and technical education at the post-secondary level, as well as programmes for different target groups through continuing education. Wikipedia.

Asad J.H.,Palestine Technical College | Diab A.A.,P.A. College | Owaidat M.Q.,Al - Hussein Bin Talal University | Khalifeh J.M.,University of Jordan
Acta Physica Polonica A | Year: 2014

The effective capacitance between the origin and any other lattice site, in an infinite 3D simple cubic network consisting of identical capacitors, is evaluated in terms of the lattice Green function of the network. The perfect case is reviewed shortly, while the perturbed case (a capacitor is removed) is studied in two cases. Numerical values of the effective capacitance are presented and the asymptotic behavior is studied for the both cases.

Nazer D.W.,Palestine Technical College | Siebel M.A.,UNESCO-IHE Institute for Water Education | van der Zaag P.,UNESCO-IHE Institute for Water Education | van der Zaag P.,Technical University of Delft | And 2 more authors.
Water Resources Management | Year: 2010

Water is one of the most valuable natural resources in the West Bank, Palestine. Due to its limited availability, it is a resource that needs particular protection. Although agriculture consumes most of the water (70%) in the West Bank, the domestic water supply is strategically not less important. It is the aim of this study to evaluate domestic water management options suitable for Palestinian conditions that contribute to achieving water sufficiency in the domestic water use in the house of tomorrow. A number of options were evaluated economically, environmentally and socially using the concept of life cycle impact assessment (LCIA). Results of the study showed that by introducing a combination of domestic water management options, a substantial decrease in the water consumption of more than 50% can be achieved, thereby reducing the pressure on the scarce water resources. The annual environmental impact of the in-house water use can be reduced in the range of 8%, when using low-flow shower head to 38% when using rainwater harvesting systems. Some of the options (faucet aerators, low-flow shower heads and dual flush toilets) were found to be financially attractive with a pay back period of less than their expected lives, others (rainwater harvesting, graywater reuse and dry toilets) were found to be financially unattractive because of the high investment. In the social context, it was found that introducing such options can improve the quality of life of those not having enough water. There is already a popular willingness to take part in water conservation in the domestic sector in the West Bank. The strongest driving force for using water conservation measures is the awareness that water is a scarce resource. It was concluded that, theoretically, the house of tomorrow can be largely independent in terms of water and sanitation. Education and awareness campaigns in the context of water management with a focus on non-traditional options are key to achieve such a house. © 2010 The Author(s).

Salah W.A.,Palestine Technical College | Al-Mofleh A.,University of Jordan | Taib S.,Universiti Sains Malaysia
Energy Sources, Part B: Economics, Planning and Policy | Year: 2016

Most household electronic products and office equipment circuitry are operated internally at a low direct current (DC) voltage. However, they are designed to be plugged directly into wall outlets with alternating current (AC). AC to DC conversion is performed by devices called DC power supplies. Energy efficiency is a serious concern for most electrical and electronic appliances that require power supplies to operate. The majority of end users consume excess energy because of inefficient, bulky, and outdated power supply systems. A great gap exists in studies on energy saving in power supply design and selection. This article presents an overview of power supply energy consumption patterns and the effects of different operation modes on overall system power consumption. Recommendations for achieving an efficient energy system are presented. © 2016 Taylor & Francis Group, LLC.

Elnaggar M.H.A.,Palestine Technical College
Jordan Journal of Mechanical and Industrial Engineering | Year: 2014

As part of the ongoing research on finned L-shape heat pipes for electronic cooling, the present work focuses on the optimization of the thickness and permeability of wick structure of L-shape heat pipe, using different working fluids. D-Optimal Designs Software is used to obtain the optimal solution to align the competing parameters such as the working fluid properties, thickness of the wick and the type of wick structure. The optimization results yielded that a wick thickness of 0.52 mm and permeability of 1.39E-11 m2 with water as a working fluid could produce the minimum temperature difference between the evaporator and condenser sections of 9.56 °C and liquid pressure drop of 5730 Pa, which could increase the heat transport capability from 35 W to 43 W. These results reveal that the performance of L-shape heat pipe in terms of heat transport capability is improved by 20%. © 2014 Jordan Journal of Mechanical and Industrial Engineering.

Mohammad R.,Palestine Technical College | Katirciolu S.,Middle East Technical University
Physica E: Low-Dimensional Systems and Nanostructures | Year: 2015

Abstract Structural stability and electronic properties of bare and hydrogenated GaP nanowires in zinc-blende and wurtzite phases have been investigated using first-principles calculations based on density functional theory. It is determined that relaxation of the hydrogenated GaP nanowires is very small compared to that of their bare ones. The wurtzite structural hydrogenated GaP nanowires are found more stable than the zinc-blende structural ones by cohesive energy calculations. It is obtained that all the bare and hydrogenated GaP nanowires in zinc-blende and wurtzite phases considered in this work have semiconductor characteristics. The confinement effect, by which the energy gaps are increased with the decrease of the diameter, is demonstrated for the hydrogenated GaP nanowires in both zinc-blende and wurtzite phases. In contrast to the hydrogenated wurtzite GaP nanowires, the hydrogenated zinc-blende ones are found direct band gap materials for diameters in the range of ∼9< d f < ∼ 21 Å. © 2015 Elsevier B.V.

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