Earticle

The addition of oxygenated compounds to diesel, supply additional oxygen which results in more burning of the fuel and thereby reducing emissions. In the present study, two oxygenated compounds, such as Ethoxy ethanol and Ethylene glycol are considered on a 3.7KW, water cooled, and kirloskar engine. The selected oxygenated compounds are blended with diesel fuel in proportions of 5% and 10% by volume and the experimental study is conducted to evaluate the performance and emissions of the diesel engine. The data obtained is compared with the conventional diesel fuel and the results reveal that Brake Thermal Efficiency (BTE) decreased with increase in the blend percentage. CO2, HC emissions decreased while NOX emissions increased.

This experimental study aimed to design a concrete mixture with recycled bottles as an alternative fine aggregates for mass housing projects that will meet the American Society for Testing and Materials (ASTM) requirements in order to help contribute to the industry in saving the environment, to encourage the government to find solutions regarding the disposal to landfills of waste materials and provide new knowledge to the contractors and developers on how to improve the construction industry methods and services by using recycled bottles, and to sustain good product performance and meet recycling goals. A conventional concrete product was compared to concrete with recycled bottles of the same proportions. Observations from the tests performed were conducted in the laboratory where precise data were gathered and completely attained.

The traveling salesman problem (TSP) is one of the most studied in operations research and computer science. Research has led to a large number of techniques to solve this problem; in particular, genetic algorithms (GA) produce good results compared to other techniques. A disadvantage of GA, though, is that they easily become trapped in the local minima. In this paper, a cuckoo search optimizer (CS) is used along with a GA in order to avoid the local minima problem and to benefit from the advantages of both types of algorithms. A 2-opt operation was added to the algorithm to improve the results. The suggested algorithm was applied to multiple sequence alignment and compared with the previous algorithms.

The present study deals with an unsteady magneto hydrodynamic free convective, Visco-elastic, dissipative fluid flow embedded in porous medium bounded by an infinite inclined porous plate in the presence of heat source, and Ohmic heating under the influence of transversely applied magnetic field of uniform strength. The equations governing the fluid flow are solved using a multiple parameter perturbation technique, subject to the relevant boundary conditions. Expressions for velocity and temperature distributions are obtained. Non dimensional skin friction coefficient and the rate of heat transfer in the form of Nusselt number are also derived and illustrated using graphs and tables. The effects of various physical parameters on the above flow quantities are discussed.

A parallel and pipelined Fast Fourier Transform (FFT) processor for use in the Orthogonal Frequency division Multiplexer (OFDM) and WLAN, unlike being stored in the traditional ROM. The twiddle factors in our pipelined FFT processor can be accessed directly. A novel simple address mapping scheme and the modified radix 4 FFT also proposed. FPGA was majorly used to develop the ASIC IC’s to which was implemented. Here we simulated and synthesized the 256- point FFT with radix-4 using VHDL coding and 64 point FFT Hardware implementation we designed code using System C. Finally, the pipelined 256-point FFT processor can be completely implemented within 19.103ns.

The object of this research paper is to obtain an analytical function that describes the dynamics of motion of superparamagnetic beads in a microfluidic channel filled with a liquid such as water or blood under the influence of an external magnetic field. A closed-form equation was derived from first principles and then simulated using MATLAB® and the results compared to those obtained experimentally by other researchers. This equation is an adequate tool to calculate the arrival times of functionalized magnetic beads of different radii at sensor location which might be useful in biomicrofluidics applications, specifically those that fall in the category of Lab-On-A-Chip in which segregation of bound and unbound beads could be determined on the basis of their different speeds without having to use magnetic separation and further external processing with additional instruments. Additionally, a practical design equation was developed to calculate the operating point of a commercial electromagnet to obtain desired speeds at predetermined distances from the magnet’s surface.

Robotic arms or manipulators are interrelated to electro mechanical modulations criteria’s. The controls of this type of manipulators are very authentic and difficult too. For flexible operation of robotic manipulators, controlling should be required for their tip vibrations and torque responses. In this article we initiate the proto type differences between responses of torques with PID Controller in open loop as well as in closed loop condition. For the closed loop, the physical phenomenon of PID Changes named as Modified PID Controller. The MPID Controller provides better performance rather than open loop PID at far end of two link Manipulator arm. The Electro mechanical modeling of the two link manipulator was done by using State Space technique named as an M-File. The entire graphical representations are providing by using MATLAB/Control tool box.