in this paper, a new combined power and refrigeration cycle is proposed, which combines the rankin power cycle and the ejector refrigeration cycle. this combined cycle produces both power output and refrigeration output simultaneously. this cycle is driven by the flue gas of gas turbines, industrial waste heats, solar energy and geothermal energy. an exergy analysis is performed to guide the th...

Methane (CH4) is the most important greenhouse gas after water vapor and carbon dioxide (CO2), and wetlands represent its largest natural source. But the high spatial and temporal variability of CH4 emissions from natural wetlands combined with patchy and incomplete information on global wetland distribution makes them especially difficult to quantify. CH4 from natural wetlands still has the la...

Toxoplasma gondii (T. gondii) is considered as one of the most successful parasites in the world. This success is first illustrated by its worldwide distribution, from arctic to hot desert areas, including isolated islands and in cities [1]. T. gondii is also among the most prevalent parasites in the global human population, with around one third of the population being infected [2]. Finally, i...

The continuous increase of production and consumption of material in the developed world and the increase of the standard of living of the developing countries leads to the increase of the use of natural resources and the degradation of the environment. Life Cycle Thinking (LCT) is essential to sustainable consumption and production which will impact the use of limited resources. LCT is the pro...

This article analyzes the evolution of the internet, with special emphasis on its impact on older media in their struggle to survive. The analysis is based on a 6-stage, natural life cycle model of new media evolution, comprising birth (technical invention), penetration, growth, maturity, self-defense, and adaptation, convergence or obsolescence. Our universal model melds several elements of pr...

In this article, the U.S. and southern Canadian natural gas supply market is considered. An important model for oil and natural gas supply is the Hubbert curve. Not all regions of the world are producing oil or natural gas following a Hubbert curve, even when price and market conditions are accounted for. One reason is that institutions are affecting supply. We investigate the possible effects ...