Main Hydrogen Production Processes: An Overview

transformation processes: an overview

transformationprocessesdebate ontheinteractionsbetween archaeological artifacts  and structures based on their natural and cultural environments. these processes provide a good picture about the site formation after its creation until now. recognition of these processes and their context help archaeologists to interpret archaeological data in an appropriate way. in this paper i would argue abou...

Main Memory Database Systems: An Overview

Memory resident database systems (MMDB’s) store their data in main physical memory and provide very high-speed access. Conventional database systems are optimized for the particular characteristics of disk storage mechanisms. Memory resident systems, on the other hand, use different optimizations to structure and organize data, as well as to make it reliable. This paper surveys the major memory...

An Overview of Hydrogen Sulfide Suicides Based on Police Data in Yamagata Prefecture, Japan

An overview on gasification of biomass for production of hydrogen rich gas

Gasification was chosen as one of the more conventional methods for conversion of biomass due to some important reasons such as space consideration, flexibility of fuels used, reducing the volume of solid waste and recovery of energy. Essentially, the process of gasification involves partial combustion of the organic part of the fuels to combustible gas rich in carbon monoxide, hydrogen and som...

Limitations of Bio-Hydrogen Production by Anaerobic Fermentation Process: An Overview

Turning organic wastes into hydrogen (H2) by using anaerobic fennentative technology is an ideal concept because this can accomplish both waste treatment and energy recovery objectives. However, H2 production using anaerobic fennentative approaches faces a fundamental limitation of poor H2 production yield (i.e. < 4 mol H2 per mol of hexose). This article gives an overview on the limitations of...