Now showing items 1-10 of 5750
Hydrogen production by biogas steam reforming: A technical, economic and ecological analysis
Fuel cells are electrochemical energy conversion devices that convert fuel and oxidant electrochemically into electrical energy, water and heat. Compared to traditional electricity generation technologies that use combustion ...
Comparative analysis between a PEM fuel cell and an internal combustion engine driving an electricity generator: Technical, economical and ecological aspects
(Elsevier B.V., 2014-02-05)
In the recent years the fuel cells have received much attention. Among various technologies, the Proton Exchange Membrane Fuel Cell (PEMFC) is currently the most appropriate and is used in several vehicles prototype. A ...
Shifting gears for the use of the shifting baseline syndrome in ecological restoration
(MDPI AG, 2019)
There are two barriers to accomplishing restoration of ecosystems: insufficient information about historical baselines to guide restoration, and shifts between the actual baselines and perceptions about historical conditions. ...
Is xenodontine snake reproduction shaped by ancestry, more than by ecology?
One of the current challenges of evolutionary ecology is to understand the effects of phylogenetic history (PH) and/or ecological factors (EF) on the life-history traits of the species. Here, the effects of environment and ...
Identification of ecologically relevant species for ecological risk assessment: A proposal from theoretical ecology Identifi cación de especies ecológicamente relevantes para la Evaluación de Riesgo Ecológico: Una propuesta desde la ecología teórica
Based on recent advances in ecological network theory, we present an ad hoc conceptual framework and a methodological proposal for the evaluation of the ecological relevance of species within a community, oriented towards ...
The Ecological Basis for Biogeographic Classification: an Example in Orchid Bees (Apidae: Euglossini)
(ENTOMOLOGICAL SOC BRASILLONDRINA,, 2012)
Biogeography has been difficult to apply as a methodological approach because organismic biology is incomplete at levels where the process of formulating comparisons and analogies is complex. The study of insect biogeography ...
Global security and ecologyGlobal security and ecology
(Instituto de Geofísica, 2013)
Optimization of an irreversible Otto and Diesel cycles based on ecological function
In this work, a mathematical model is presented for the irreversible Otto and Diesel cycles using finite time thermodynamics. The cycle is analyzed between two reservoirs with infinite thermal capacitances, where the ...