September 2010

Auxetic behavior of a thermoelastic layered plate

  The aim of this paper is to study the auxetic and non-auxetic behavior of a layered plate in context of coupled thermoelasticity. For this problem, temperature variation and thermal stresses are analyzed in a state of plane stress. Results are obtained for a layered plate subjected to a sudden uniform normal pressure and for obtained results graphs are depicted.   Key words: Auxetic...

Author(s): S. K. Bhullar, J. L. Wegner and A. Mioduchowski

September 2010

Simulation analysis on high step-up DC-DC converter for fuel cell system

  This paper presents a high step-up DC-DC converter for fuel cell system. The proposed converter comprises of an input-current doubler, an output-voltage doubler, and an active-clamp circuit. The input-current doubler and the output-voltage doubler both provide much higher voltage conversion ratio by using a low turn ratio transformer. The low turns ratio increases the overall efficiency. A series resonant...

Author(s): E. Narendran, S. Harikrishnan, K. C. Ramya Ashokkumar and R. Malathi

September 2010

Digital camera images processing of hard-to-cook beans

  Haricot bean (Phaseolus vulgaris L.) is the most widely produced and consumed legume in the world and occupies an important place in human nutrition in many regions of Africa by improving the nutritional status of many low income populations. It is well known that a significant problem with haricot bean is that it does not soften easily and remains hard even after two or more hours of cooking in boiling...

Author(s): Bitjoka Laurent,, Boukar Ousman,, Tenin Dzudie, MF Mbofung Carl and Tonye Emmanuel