Search results for "fuel"
showing 10 items of 986 documents
Electrocatalytic properties of manganese and cobalt polyporphine films toward oxygen reduction reaction
2018
International audience; Novel member of polymetalloporphines, namely manganese polymetalloporphine of type I (pMnP-I) obtained by ion exchange from magnesium polyporphine of type I (pMgP-I) is reported for the first time and compared to its cobalt analogue (pCoP-I). Both polymer films have been obtained via two-step procedure: demetaladon of the pMgP-I electrode film via its exposure to trifluoroacetic acid solution, resulting in formation of the metal-free polyporphine of type I (pH(2)P-I) followed by electrochemically induced incorporation of Co or Mn ions from the acetonitrile solution of cobalt and manganese perchlorates. A further oxidative transformation of pCoP-I, polymer films has l…
Reducing whole-body vibration exposure in backhoe loaders by education of operators
2012
Author's version of an article published in the journal: International Journal of Industrial Ergonomics. Also available from the publisher at: http://dx.doi.org/10.1016/j.ergon.2012.03.001 Whole-body vibration is a health hazard for operators of construction machinery. The level of whole-body vibration exposure on the operator is governed by three different factors; performance of the suspension system of the machine, planning of the work and the skills of the operator.In this research work it is investigated whether there is a potential in bringing down the level of whole-body vibration exposure by educating operators of backhoe loaders. This is carried out by an experimental setup. Six ex…
The Acceptable Alternative Vehicle Fuel Price
2019
Historically, petroleum fuels have been the dominant fuel used for land transport. However, the growing need for sustainable national economics has urged us to incorporate more economical and ecological alternative vehicle fuels. The advantages and disadvantages of them complicate the decision-making process and compel us to develop adequate mathematical methods. Alternative fuel (compressed natural gas, liquefied petroleum gas, and ethanol fuel mixtures), the standard prices and their ratios were investigated. A mathematical model to determine a critical ratio between alternative and conventional fuel prices had already been developed. The results of this were investigated. The results sho…
Sustainability and Meanings of Farm-Based Bioenergy Production in Rural Finland
2013
El TRATAMIENTO PERIODÍSTICO DE LAS NOTICIAS RELACIONADAS CON LOS VIRUS DEL DENGUE Y ZIKA EN LOS MEDIOS DIGITALES DE HONDURAS (2010-2017)
2019
Resumen: En 1979, se identificó la primera epidemia de dengue en Honduras. En 2010, las autoridades sanitarias y gubernamentales hondureñas decretaron lo que sería la quinta epidemia que afectaba a la población. Cinco años más tarde, una enfermedad emergente llegó al continente americano: el zika. Las entidades internacionales como la Organización Mundial de la Salud y la Organización Panamericana de Salud extendieron la alerta a nivel latinoamericano, en especial a los países propensos por su situación geográfica, climatológica y situación socioeconómica. El objetivo del presente estudio es analizar el contenido de las noticias que se publicaron sobre los virus del dengue y zika en tres di…
Rice straw management: the big waste
2010
Rice is one of the major foods, with consumption per capita of 65 kg per year, accounting for 20% of global ingested calories. Rice production is expected to increase significantly in the near future in order to feed the rising human population. Today, paddy rice culture produces 660 million tons of rice, along with 800 million dry tons of agricultural residues, mainly straw. This biomass is managed predominantly through rice straw burning (RSB) and soil incorporation strategies. RSB leads to significant air pollution and has been banned in some regions, whereas stubble and straw incorporation into wet soil during land preparation is associated with enhanced methane emissions. Therefore, bo…
Experimental tests on hydrogen production from seawaves energy
2017
In this paper we propose the use of Wave Energy Converter and saline water to produce hydrogen. Two different scheme and technology are proposed. The objective of this research is to design an electrolyzing system capable of utilizing sea. In particular, we present the results obtained by two different prototype of electrolyzer: one with steel electrodes and the second with titanium electrodes. Further experiments were carried out by changing the electrolytic solution of water and sodium chloride in real seawater. Finally, the electrical load has been changed as imposing electric current with a distorted waveform. © 2017 Marine Technology Society.
Elektroutlenianie odpadowego syntetycznego oleju silnikowego w wodnym roztworze H2SO4
2017
W pracy przedstawiono badania nad możliwością wykorzystania odpadowego syntetycznego oleju silnikowego do bezpośredniego wytwarzania energii elektrycznej. Pomiary przeprowadzono w zakresie temperatur 293–333 K. Obejmowały one elektroutlenianie emulsji odpadowego (zużytego) syntetycznego oleju silnikowego na elektrodzie platynowej w wodnym roztworze H2SO4. Do wytworzenia emulsji wykorzystano niejonowy środek powierzchniowo czynny Syntanol DS-10. Maksymalna uzyskana gęstość prądu wyniosła 22 mA/cm2 (dla temp. 333 K). Wykazano więc, że istnieje możliwość bezpośredniego wytwarzania prądu elektrycznego z odpadowego syntetycznego oleju silnikowego, a więc zasilania nim ogniw paliwowych.
Biochar from Waste Derived Fuels as Low-Cost Adsorbent for Waste Hydrocarbons
2020
Abstract The aim of this study is to prove technical feasibility of combined refuse derived fuel (RDF) torrefaction and oily wastewater treatment approach by using RDF derived biochar as a sorption media. Biochars prepared from refuse derived fuels in torrefaction, carbonization and pyrolysis modes were analysed as fuels and as hydrocarbon sorbents. Changes of elemental composition and properties of material during thermal treatment and subsequent washing process have been analysed. Experimental evaluation of sorption behaviour of toluene and diesel fuel on obtained biochar performed. Our results show that torrefaction/carbonization of RDF coupled with the subsequent washing of biochar is a…
A multi-input, single-inductor power system for multisource energy harvesting
2013
Today, energy harvesting is drawing a great deal of attention due to modern trends in energy saving and sustainable development purposes. Among renewable energy sources fuel cells and photovoltaic arrays are the most promising for a wide variety of applications, ranging from few mWatts of wireless sensor networks to kWatts for household appliances. Coupling several harvesters and renewable sources is the winning strategy to ensure a proper supply overcoming the uncertainty and limited availability of common harvesters and renewable sources. Multisource energy harvesting is actually an open research topic involving several pressing and often conflicting requirements. System cost, complexity,…