densification of biomass material that usually has a low density is proper way to increasing density,reduce transportation cost and simplify storage and distribution of these materials. pellet productionusing extrusion process is a common method for densification. the goal of this research isoptimization of specific energy consumption for extrusion process considering its effect on pelletdensit...

the major purpose of this study was to examine the advantages and implications of biogastechnology in the agriculture sector. biogas is one of many biomass energy sources, which includeanything that was once alive and that can generate energy (except for fossil fuels, which are notrenewable). to talk of biogas is to talk of agriculture, since biogas generation starts withagricultural waste prod...

the study examined gender analysis of energy use for rice production in north central nigeria using a sample of 60 rice farmers. an analysis of gender relations provides the information on the different conditions men and women face, and the different effects that policies and programs may have on them. simple descriptive statistics were used to analyze the data. energy efficiency and energy pr...

The energy absorbing capability is one of the most important aspects of crushing behavior of a structure subjected to axial impact. In this paper, a simple practical method is introduced to enhance the crushing behavior of this kind of structure. The axial impact of metallic energy absorbing thin-walled tubes with special shaped cross-section is simulated using LS-DYNA software. The effect of c...

In this computational research, the separate and simultaneous impacts of diesel direct injection timing, fuel spraying cone angle, and hydrogen gas addition on combustion characteristics, output emissions, and performance in a single-cylinder direct injection diesel engine was studied. In order to conduct the simulations, valid and reliable models for combustion, break-up, and for turbulence wa...

 Thin-walled energy absorbers are used to reduce accident induced damages. In this study, thin-walled stainless steel structures in quasi-hemisphere geometry were subjected under quasi-static loading with Santam 150KN apparatus. Experimental results were compared with results of numerical simulations by LS-DYNA and it was shown that there is a good agreement between experimental and numerical r...

Register files account for a significant fraction of the power dissipation in modern RISC processors. Register file banking is an effective alternative to monolithic register files in embedded systems. We propose a profile-based technique to arrive at a customized energy-efficient bank configuration for a given application on a dual bank register file. The technique consists of a register renam...