European Journal of Advances in Engineering and Technology

8-15

Authors: PK Das and Prasanta Haldar

After passing two V -type atoms successively through a single mode interacting field in a cavity we arrive at a state which has been analyzed to study nonclassicality of the evolved state of the system. In the process we plan to study Mandel’s Q-parameter and normal squeezing of the resulting field.

20-24

Authors: Waqar Ali Khan, Imran Shamshad, Umar Shafiq and Ahmad Mukhtar

The world is facing declining liquid fuel reserves at a time when energy demand is exploding. Alternative fuel is currently an important issue all over the world due to efforts on reducing the global warming which is contributed by the combustion of petroleum or petrol diesel. In order to achieve a secure and stable energy supply that does not cause environmental damage, renewable energy sources must be explored and promising technologies must be developed. In this study one of the renewable energy technology known and Fischer-Tropsch Synthesis is considered and a design methodology for the Fischer-Tropsch Reactor for the production of Green Diesel from Coal Syngas is presented.

34-38

Authors: Uttam S Narwaria, Premanand S Chauhan and Juber Husain

Finite difference simulation of horizontal fin with an aspect ratio of 3 has been conducted in the present study for cooling of electronic equipment. Two-dimensional heat conduction equation governs the physical problem. Three different materials Aluminium, Copper and Nickel will be studied to see the effect of thermophysical property on the cooling rate of fin at particular given temperature range or heat flux range. Appropriate boundary conditions have been adopted which represent the actual physical scenario of a fin. MATLAB used to simulate the governing equation and boundary conditions.

45-51

Authors: D Anjaneyulu, B Ajanta Reddy and BVNR Siva Kumar

This paper describes the design of a wheelchair which is controlled with a Keyboard or Accelerometer. Accelerometer is going to produce different voltages based on tilting. The ADX335 MEMS (Micro Electro Mechanical System) Accelerometer senses the tilt of the hand. According to tilt it will produce voltages are given to microcontroller then the controller gives directions to Relays in the board. The Relays in the board will decides direction of wheelchair by ON/OFF corresponding motors. And also it can be controlled by using Arrow keys in the keyboard i.e. (Up. Down, Left, Right). Based on Arrow keys pressed on key board the corresponding direction of wheelchair is going to be change. Advantage of wheelchair is cost is low, power consumption of batteries is less, we can control easily, Complexity of design is less.

59-71

Authors: Salah A Aly, Mohammed A Ibrahim and Mostafa M Khttab

The amount of construction and demolition (C&D) waste has increased considerably over the last few decades. From the viewpoint of environmental preservation and effective utilization of resources, crushing C&D concrete waste to produce coarse aggregate (CA) with different replacement percentage for the production of new concrete is one common means for achieving a more environment-friendly concrete. In the study presented herein, the investigation was conducted in two phases. In the first phase, the selection of the materials was carried out and the physical, mechanical and chemical characteristics of these materials were evaluated. Different concrete mixes were designed. The investigation parameter was Recycled Concrete Aggregate (RCA) ratios. The mechanical properties of all mixes were evaluated based on compressive strength and workability results. Accordingly, two mixes have been chosen to be used in the next phase. In the second phase, the study of the structural behavior of the concrete beams was developed. Sixteen beams were casted to investigate the effect of RCA ratios, the shear span to depth ratios and the effect of different locations and reinforcement of openings on the shear behavior of the tested specimens. All these beams were designed to fail in shear. Test results of the compressive strength of concrete indicated that, replacement of natural aggregate by up to 50% recycled concrete aggregates in mixtures with 350 Kg/m3 cement content led to increase of concrete compressive strength. Moreover, the tensile strength and the modulus of elasticity of the specimens with RCA have very close values to those with natural aggregates. The ultimate shear strength of beams with RCA is very close to those with natural aggregates indicating the possibility of using RCA as partial replacement to produce structural concrete elements. The validity of both the Egyptian Code for the design and implementation of Concrete Structures (ECCS) 203-2007 and American Concrete Institute (ACI) 318-2011Codes for estimating the shear strength of the tested RCA beams was investigated. It was found that the codes procedures gives conservative estimates for shear strength.

78-82

Authors: SM Omair and Samir Kumar Pandey

An e-epidemic SI1I2R (susceptible - Infectious1 - Infectious2 - Recovered) model characterizing the spread of viruses in a computer network has been developed to have a better understanding of the reason of virus attack. A study of the basic reproduction number reveals the affect of virus attack. Moreover, primary simulation results show the positive impact of increasing security measures on virus propagation in computer network. We have analyzed the behavior of the Susceptible, Infected and Recovered nodes in the computer network with real parametric values. Efficiency of antivirus software and crashing of the nodes due to virus attack critically analyzed. Numerical methods and MATLAB are employed to solve and simulate the system of equations developed and interpretation of the model yields interesting revelations.