diffusion flame in a dust cloud combustion in a counterflow configuration is investigated in this research. it is presumed that the fuel particles vaporize first to yield a gaseous fuel to oxidize with the gas phase. the reaction rate is assumed to be of the arrhenius type. conservation equations for the non-unity lewis number are solved and the flame temperature with the variations of differen...

to examine hydraulics of lnapls in soil, the retention curves of diesel fuel and water were both determined by hanging column method. the soil retention parameters were obtained based on van genuchten, brooks-corey and campbell’s models. in addition, the soil hydraulic conductivity for both fluids were predicted based on mualem- brooks-corey, burdine- brooks-corey, mualem-van genuchten and camp...

Executive Summary.................................................................................................................................................2 I. Key Issues for Energy Policy.............................................................................................................................3 II. Pricing a Kilowatt Hour...................................................

The goal of the work reported here is the perfection of a powerful laser based on the coherent annihilation of a Bose-Einstein condensate of positronium, the hydrogen-like atoms formed from bound electronpositron pairs. We have made progress in several areas that takes us closer to our goal. Specifically we report (I) advances in positron storage and manipulation techniques; (II) Development of...

This paper describes the work carried out to develop EcoBotIII, which is a robot with an artificial digestion system. The robot is powered by Microbial Fuel Cells (MFCs) and it is designed to collect food and water from the environment, digest the collected food and at the end of the digestion cycle, egest the waste. EcoBot-III operated successfully for 7 days when fed with anaerobic or pasteur...

................................................................................................................................................................2 INTRODUCTION .......................................................................................................................................................2 DIFFERENT APPROACHES USED TO ESTIMATE ENVIRONMENTAL BURDEN OF DISEASE...

to simulate a new economical architecture for pem fuel cell and investigate the effectiveness of the introduced structure on the performance, computational fluid dynamics (cfd) code is used to solve the equations for a single domain of the cell namely: the flow field, the mass conservation, the energy conservation, the species transport, and the electric/ionic fields under the assumptions of st...

a newly developed heavy duty diesel engine in dual fuel mode of operation has been studied in detail. the main fuel would be natural gas and diesel oil as pilot injection. the importance and effects of mixture preparation and formation through ports, valves and in cylinder flow field with different swirl ratio and tumble on diesel combustion phenomena is an accepted feature which has been studi...

Aluminum hydride or alane AlH3 is a very important and fascinating material that has recently attracted attention for its potential for different purposes [1, 2]: (i) as an energetic component in rocket propellants, (ii) as a reducing agent in alkali batteries and (iii) as a possible hydrogen source for low temperature fuel cells. For hydrogen storage, this material will be an excellent candida...

Satellite RNA guides kinetochore assembly R ošić et al. reveal that a non-coding RNA transcribed from repetitive DNA sequences promotes kinetochore assembly and chromosome segregation during mitosis. Centromeres—the chromosome regions where kinetochore proteins assemble and attach chromosomes to the mitotic spindle—are defi ned by epige-netic factors such as the histone variant CENP-A rather th...