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The growth dynamics of green sea turtles resident in four separate foraging grounds of the southern Great Barrier Reef genetic stock were assessed using a nonparametric regression modeling approach. Juveniles recruit to these grounds at the same size, but grow at foraging-ground-dependent rates...
Persistent link: https://www.econbiz.de/10009447950
material and the type of interfering species, such as hydrogen in the case of neutron counting. Some assay techniques are less …
Persistent link: https://www.econbiz.de/10009435464
Recent events have reminded us of the critical need to transition from crude oil, coal, and natural gas toward sustainable and domestic sources of energy. One reason is we need to strengthen our economy. In 2008 we saw the price of oil reach a record $93 per barrel. With higher oil prices,...
Persistent link: https://www.econbiz.de/10009436681
Achieving a successful transition to hydrogen-powered vehicles in the U.S. automotive market will require strong and … sustained commitment by hydrogen producers, vehicle manufacturers, transporters and retailers, consumers, and governments. The …, and ultimately the success of the transition itself. The transition to hydrogen-powered transportation faces imposing …
Persistent link: https://www.econbiz.de/10009437113
Power towers are capable of producing solar-generated electricity and hydrogen on a large scale. Heliostats are the … and hydrogen at $3.20/kg. We propose research and development that should ultimately lead to a price as low as $90/m{sup 2 …
Persistent link: https://www.econbiz.de/10009437129
possibility of transition to a hydrogen economy. These limitations were adopted to simplify the transition analysis. Inspection of …
Persistent link: https://www.econbiz.de/10009437246
The H2A Production Model analyzes the technical and economic aspects of central and forecourt hydrogen production … technologies. Using a standard discounted cash flow rate of return methodology, it determines the minimum hydrogen selling price … familiar with the basic tenets of H2A hydrogen production cost analysis get started using the new version of the model. It …
Persistent link: https://www.econbiz.de/10009437264
kinetics of the hydrogen uptake by the DPB getter pellets. The kinetics obtained were then used to develop a semi … hydrogen pressure buildup in sealed systems containing DPB getter pellets and subjected to known rates of hydrogen input. The … volatility of the hydrogenated DPB products and its effects on the hydrogen uptake kinetics were also analyzed. …
Persistent link: https://www.econbiz.de/10009436232
The production of this Economic Evaluation Guide is one activity of AVFCAP. The guide is intended for use by project managers and fleet operators in the public sector. Public fleets have been identified as one of the most likely areas where ATFs will first gain widespread use, because of...
Persistent link: https://www.econbiz.de/10009436938
This article is about convergence and why not. How about a ride to space in an elevator? Why not? A single nanotube could stretch from earth to the stratosphere and be able to support its own weight. This fact spurred NASA to review ideas proposed by Konstantin Tsiolkovsky (1895) a Russian...
Persistent link: https://www.econbiz.de/10009433268