Alternative Energy Sources
Mostrando 13-24 de 118 artigos, teses e dissertações.
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13. Electrochemical Systems for Renewable Energy Conversion from Salinity and Proton Gradients
Ever-rising energy demand, fossil fuel dependence, and climate issues have harmful consequences to the society. Exploring clean and renewable energy to diversify the world energy matrix has become an urgent matter. Less explored or unexplored renewable energy sources like the salinity and proton gradient energy are an attractive alternative with great energy
J. Braz. Chem. Soc.. Publicado em: 2018-05
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14. Apparent digestibility of conventional and alternative feedstuffs by hybrid tambacu juveniles
ABSTRACT The apparent digestibility coefficients (ADC’s) of dry matter (DM), crude protein (CP), and gross energy (GE) of conventional feedstuffs (cottonseed meal-CSM, soybean meal-SBM, wheat bran-WHB, corn-COR) and regional alternative feedstuffs (common bean residue meal-CBR, mesquite meal-MES, pasta by-product meal-PBM) were determined for hybrid juveni
An. Acad. Bras. Ciênc.. Publicado em: 2018-03
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15. Rock biofertilizer and earthworm compost on sugarcane performance and soil attributes in two consecutive years
ABSTRACT The deployment of soluble fertilizers has been one of the most commonly applied agricultural practices in the bid to increase crop yield. However, the production of soluble fertilizers has a considerable economic cost and consumes a substantial amount of energy. In general, soil organic matter provides the nutrients needed for plant growth in organi
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-02
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16. Synthesis of 3-(1H-1,2,3-Triazol-1-yl)-2-(arylselanyl)pyridines by Copper-Catalyzed 1,3-Dipolar Cycloaddition of 2-(Arylselanyl)-3-azido-pyridines with Terminal Alkynes
We present here our results in the synthesis of eleven new 3-(1H-1,2,3-triazol-1-yl)-2-(arylselanyl)pyridines by copper-catalyzed azide-alkyne cycloaddition reactions. The reactions were performed in the presence of catalytic amount of copper(II) acetate and sodium ascorbate using a mixture of tetrahydrofuran/water (1:1) as solvent at room temperature in air
J. Braz. Chem. Soc.. Publicado em: 2015-11
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17. Physicochemical properties, modifications and applications of starches from different botanical sources
Present trends towards technologies and processes that increase the use of residues make starchy vegetal biomass an important alternative material in various applications due to starch’s versatility, low cost and ease of use when its physicochemical properties are altered. Starch is increasingly used in many industrial applications and as a renewable energ
Food Sci. Technol. Publicado em: 2015-04
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18. Visiones sobre los tránsitos socio-técnicos hacia patrones de consumo sustentable en agua y energía en la minería sudamericana - dos controversias argentinas
This paper addresses the problem of water and energy consumption in the South American mining from a perspective not much explored: the sustainable consumption. From the point of view of sociology and the social studies of science and technology, we expose the issue by presenting three different consumption patter
Sociologias. Publicado em: 2014-12
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19. An overview of heavy oil properties and its recovery and transportation methods
Unconventional oils - mainly heavy oils, extra heavy oils and bitumens - represent a significant share of the total oil world reserves. Oil companies have expressed interest in unconventional oil as alternative resources for the energy supply. These resources are composed usually of viscous oils and, for this reason, their use requires additional efforts to
Braz. J. Chem. Eng.. Publicado em: 2014-09
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20. Residual biomass potential of commercial and pre-commercial sugarcane cultivars
Sugarcane (Saccharum spp.) is an efficient and sustainable alternative for energy generation compared to non-renewable sources. Currently, during the mechanized harvest process, the straw left in the field can be used in part for the second generation ethanol and increasing the electric energy production. Thus, this study aimed to provide information on the
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-10
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21. Experimental Valuation Diagnostics of Hydrous Ethanol Sprays Formed by a Blurry Injector
ABSTRACT: Concerns about the rising fuel price and environmental changes have led to the search for alternative fuels and energy sources. The interest in improving the performance of power generation, with the aim of reducing costs, increasing operating efficiency, and reducing the emissions of pollutants, has driven the scientific community to work on new b
J. Aerosp. Technol. Manag.. Publicado em: 2013-06
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22. Performance and carcass traits of Santa Inês lambs finished with different sources of forage
The objective of this study was to evaluate performance and biometrics of lambs fed different sources of forage. Twenty-four six-month-old Santa Inês female lambs were randomly allocated to four experimental diets and housed in individual stalls. They weighed on average 26.35±0.20 kg. The diets were coast cross hay (HAY), cassava hay (CAS), dehydrated by-p
R. Bras. Zootec.. Publicado em: 2013-06
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23. Performance of finishing steers fed different sources of carbohydrates
The objective of this study was to evaluate the effect of carbohydrate sources (corn, soybean hulls or wheat bran) in the diet on performance of feedlot steers in the finishing phase. Twenty-four Charolais × Nellore crossbred steers, aged 22 months and initial weight of 335.0±10.9 kg were used in the experiment. Diets contained 40% sorghum silage and 60% c
R. Bras. Zootec.. Publicado em: 2013-05
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24. Química Sem Fronteiras: o desafio da energia
Coal, natural gas and petroleum-based liquid fuels are still the most widely used energy sources in modern society. The current scenario contrasts with the foreseen shortage of petroleum that was spread out in the beginning of the XXI century, when the concept of "energy security" emerged as an urgent agenda to ensure a good balance between energy supply and
Quím. Nova. Publicado em: 2013