FOSSIL FUELS
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Analysis and presentation of the results of the public consultation "Unconventional fossil fuels (e g shale gas) in Europe
... unconventional fossil fuels extraction should be given to citizens and public acceptance should be ...unconventional fossil fuels as an important policy ...unconventional fossil ...
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Book review of "Foragers, farmers, and fossil fuels"
... In Why the West Rules—For Now (2010), the archaeologist and historian Ian Morris argued that geography has been the primary factor shaping the relative political and cultural power of Asian and European civilizations ...
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Scenarios of the future expansion of Oil Palm in Colombia|bimpacts generated by the biofuels sector
... The relation between the expansion of crops to produce biodiesel and forest loss in tropical countries has been well documented in Malaysia and Indonesia (Dillon and Laan, 2008; Wilcove and Koh, 2010). Between 1990 and ...
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Analysis of the flammability properties of solid fuels
... of fossil fuels has motivated the appearance of a huge range of new fuels that can be grouped under the term ...new fuels are deeply studied in order to find out materials less pollutant but ...
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Fuel Cells: A Real Option for Unmanned Aerial Vehicles Propulsion
... Developments in which a fuel cell delivers power to an electric motor, which in turn drives a propeller or a rotor, already exist, such as a helicopter UAV powered by a PEM fuel cell fed with compressed hydrogen. Recent ...
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Energy efficiency strategies for ecological greenhouses: experiences from Murcia (Spain)
... This strategy incorporates proven expert knowledge [48,78] and learning in each of the actions. The focus amongst personnel to homogenize technical knowledge leads to a production process which makes it stand out from ...
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TEMA 6 (BILINGÜE). ENERGÍA Y PROBLEMA ENERGÉTICO (PARTE II).pdf
... It is an alternative to fossil fuels such as coal or oil. Nuclear energy avoids the problem of global warming, which is believed to have a more important influence on global climate change. This would ...
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7. PHYSICOCHEMICAL AND INFRARED SPECTRAL PROPERTIES OF BIODIESEL FUELS SYNTHESIZED FROM SOME VEGETABLE OILS
... Petroleum diesel has a dynamic viscosity value of 5.61 mPa s at 20° C , the other ones are in the range from 4.40 to 8.24 mPa s. These differences could be attributed to preparation procedures in which reaction times ...
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The fossil record of South American short-faced bears (Ursidae, Tremarctinae)
... the fossil record in South America indicates species turnover between the Ensenadan and Bonaerian, during which time the giant species Arctotherium angustidens was replaced by Arctotherium tarijense, Arctotherium ...
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Palmacites berryanum, a new palm fossil from the Costa Rica Tertiary
... the fossil within the Palmae ( 1 1, 1 6, 24, 2 5, 27, 34, 44, 45, 46, 49) ; bibliographical research indicates that it is a new ad dition to the Costa Rican ...of fossil palms ascribed to Tropical ...
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Bacterial contamination of automotive fuels in a tropical region: the case of Costa Rica
... in fuels (Bento & Gaylarde ...in fuels, according to several previous studies (Edmonds & Cooney 1967, Pitcher 1989, Gaylarde et ...(including fuels) has been studied (Atlas 1981, Desai & ...
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Conceptos de especies en mixomicetos, géneros monotípicos, el registro fósil y ejemplos adicionales de una buena práctica taxonómica
... in the 21 Century. The criteria for species concepts will surely involve DNA analysis that focus on population diversity and the complexities of understanding population differentiation. Species concepts should include ...
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The adaptation of sustainable biojet fuels and its effect on aircraft engine maintenance
... biojet fuels are still at a moderate level, among the personnel in the ...biojet fuels knowledge is at 25% at the lower rate or ...biojet fuels in the aviation ...biojet fuels are safe to be ...
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Problems with hominid fossil species taxa and the construction of taxograms
... incomplete fossil record allows? In the early days of postwar ( WWII ) paleoanthropology, with its roots firmly entangled in cultural anthropology (in the United States at least), the single species lineage notion ...
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Preliminary Report on a Late Cretaceous Vertebrate Fossil Assemblage in Northwestern Coahuila, Mexico
... The fragmentary nature of the fossil record as well as the wear traces on some bones indicates decay of the carcasses upstream and subsequent and transport prior to deposition. The different age stages hint to the ...
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Investigation on the applicability of biofuels in the operation of commercial aircraft
... The consequences of the oil price decrease started in the last part of 2014 are unclear and strongly dependent on the dimension and duration of this trend. As the oil share in the airline operating cost diminishes, some ...
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Late Quaternary hydrological and ecological changes in the hyperarid core of the northern Atacama Desert (~21°S)
... Organic-rich deposits typically occur as mounds (Fig. 3a) preserved on the surface of relict fl uvial terraces (T2, T2.5, T2.7, Fig. 2) from Quebradas (canyons) Maní (QM) Sipuca (QS) and Tambillo (QT) (Fig. 3e). We could ...
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CALORIMETRIC STUDY OF RENEWABLE FUELS WITH THE SENSIBLE HEAT CALIMETRI APPARATUS
... The results of the PMMA experiments have shown that the SCALA is suitable to be used with this kind of fuels. The heat release rate determined by each method of the SCALA results in the same behavior. There were ...
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Taxonomic position of two fossil social bees (Apidae)
... the fossil genus Electrapis in three subgenera: Electrapis (Electrapis) Cockerell ( 1 909), Electrapis (Protobombus) Cockerell ( 1909), and Electrapis (Roussyana) Manning ( 1 960) to which ...Oligocene ...
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![Fossil echinoderms from Costa Rica: preliminary notes [Spanish]](https://data02.123doks.com/thumbv2/123dok_es/000/588/588575/cover.webp)
Fossil echinoderms from Costa Rica: preliminary notes [Spanish]
... Abstract: Fossil echinoderms from Costa Rica: preliminary ...the fossil collection of the Central American School of Geology at the University of Costa Rica, the National Museum and personal ...
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