ABSTRACT This paper determines a procurement strategy where demand over a finite planning horizon is uncertain. Demand variations make forecasting and inventory management more difficult and tend to increase inventory levels which emphasis on proper procurement strategy. Here procurement strategy is developed by considering limited approved suppliers and multiple products. It is assumed that the […]

ABSTRACT Magnetic Resonance Angiography (MRA) is used to image blood vessels. The enhancement in image compression is largely related to fast and efficient methods for the storage and transmission of information between individuals. This effort examines the comparative performance of Wave Atom Transform (WAT), Discrete Cosine Transform (DCT), Discrete Sine Transform (DST) and Wavelet Transform […]

ABSTRACT Radiation Characteristics of a circular sector micro strip antenna (CSMA) designed for the 60 GHz millimeter-wave bandan application is presented in this paper. The proposedantenna consists of a circular patch with sector slot excited by micro stripfeeding technique.Substrate material chosen here is the Kapton which is a polyimide used in high performance flexible printed […]

ABSTRACT This work aims to simulate convective heat transfer of Al2O3 water based nanofluids in three different volume concentrations of 0.5%, 1% and 2%, in a porous zone channel under a constant heat flux as boundary condition. ANSYS FLUENT 2016 was considered as the simulation software and the applied nanofluids thermo-physical properties were modeled via […]

ABSTRACT Single crystals of p-type WS2 and WS1.9 have been grown by a Physical Vapour Transport (PVT) technique. DC electrical resistivity measurements have been made along the c-axis in both these crystals. Electron microscopic examinations revealed the presence of large concentration of defects in these crystals. The observations described in this paper clearly indicate how […]

ABSTRACT This study explored the flexibility of FCC unit of a typical Refinery, in Optimizing Propylene, a feedstock for the petrochemical industry. This was achieved using Aspen Hysys (version 7.1), a chemical process software to systematically manipulate the reactor’s temperature, pressure and catalyst activity variables in the FCCU. Result from the simulation showed that increase […]

ABSTRACT It has been realized that using renewable resources will be better for the world in the future. The advantage of the hydro turbine is using renewable energy to provide electricity because the water is released back into the source from which the water came. This small scale hydroelectric system can provide cheap electricity without […]

ABSTRACT In the present study DBD plasma actuator was applied into a 2D incompressible channel flow to study turbulent structures by using a Finite Difference approach to k-ε turbulent model and also Realizable k-ε model. The actuator was simulated by Modified Lumped Circuit Element Electro- Static model just as the previous work in (2016) [1]. […]

ABSTRACT In this study the authors analyzed on the effects of stitch length and Yarn Count on fabric width and stiffness of weft knitted single jersey fabrics. On this study different types of weft knitted single jersey fabrics have been used like as single jersey plain, single lacoste, double lacoste and polo pique fabric. The […]

ABSTRACT Recently, an increased attention is turned to increase the building energy performance in Saudi Arabia in order to improve the global energy saving strategy and to achieve the required indoor thermal comfort. The local environmental microclimate conditions can play an important role in the thermal-energy behaviour of residential buildings. Consequently, the architectural design of […]