Results 31 to 40 of about 792,031 (309)

Metal-Free Dihydrogen Oxidation by a Borenium Cation:A Combined Electrochemical/Frustrated Lewis Pair Approach [PDF]

open access: yes, 2014
In order to use H2 as a clean source of electricity, prohibitively rare and expensive precious metal electrocatalysts, such as Pt, are often used to overcome the large oxidative voltage required to convert H2 into 2 H+ and 2 e−. Herein, we report a metal-
Bard   +15 more
core   +1 more source

Soil methane sink capacity response to a long-term wildfire chronosequence in Northern Sweden [PDF]

open access: yes, 2015
Boreal forests occupy nearly one fifth of the terrestrial land surface and are recognised as globally important regulators of carbon (C) cycling and greenhouse gas emissions.
A Liptay   +42 more
core   +3 more sources

System for measurement and automatic regulation of gas flow within an oil aging test device [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2014
This paper describes a system within an oil aging test device that serves for measurement and automatic regulation of gas flow. Following an already realized system that continuously monitors, logs, and regulates transformer oil temperature during the ...
Žigić Aleksandar   +4 more
doaj   +1 more source

Thermal stability of nanostructurally stabilized zirconium oxide

open access: yesNanotechnology, 2007
Nanostructurally stabilized zirconium oxide (NSZ) hard transparent films were produced without chemical stabilizers by the ion beam assisted deposition technique (IBAD). A transmission electron microscopy study of the samples produced below 150 °C revealed that these films are composed of zirconium oxide (ZrO2) nanocrystallites of diameters 7.5 ± 2.3 ...
Namavar, Fereydoon   +9 more
openaire   +2 more sources

Effect of Accelerated High Temperature on Oxidation and Polymerization of Biodiesel from Vegetable Oils

open access: yesEnergies, 2018
Oxidation of biodiesel (BD) obtained from the decomposition of biomass can damage the fuel injection and engine parts during its use as a fuel. The excess heating of vegetable oils can also cause polymerization of the biodiesel.
Jae-Kon Kim   +6 more
doaj   +1 more source

A Complementary Biodiesel Blend from Soapnut Oil and Free Fatty Acids

open access: yesEnergies, 2012
Blends of biodiesels produced from soapnut oil and high-oleic free fatty acids (FFAs), which are potential non-edible oil feedstocks, were investigated with respect to their fuel properties.
Lu-Yen Chen   +8 more
doaj   +1 more source

Evaluation of Physicochemical Properties Composite Biodiesel from Waste Cooking Oil and Schleichera oleosa Oil

open access: yesEnergies, 2023
Waste cooking oil (WCO) biodiesel has some disadvantages, such as poor cold flow properties, low oxidation stability, and flash point during storage. These poor physicochemical properties can be improved by different ways, such as the addition of non ...
Suherman Suherman   +3 more
doaj   +1 more source

Electropolymerization of phenol on a vitreous carbon electrode in alkaline aqueous solution at different temperatures [PDF]

open access: yes, 2009
Electrochemical oxidation of phenol in basic aqueous solution has been studied on a vitreous carbon electrode at different temperatures in the range of 25–85 °C by cyclic voltammetry and chronoamperometry techniques.
Savall, André   +1 more
core   +1 more source

Oxidation stability of seed oils from four woody oil plant species

open access: yesCyTA - Journal of Food
The oil content, fatty acid, oil quality and oxidation stability of seeds of four woody oil plants (pecan, Camellia oleifera, Torreya grandis and walnut) were analyzed.
Yaping Wang   +7 more
doaj   +1 more source

APPLICATION OF THE MULTIRESPONSE OPTIMISATION SIMPLEX METHOD TO THE BIODIESEL - B100 OBTAINING PROCESS

open access: yesSemina: Ciências Exatas e Tecnológicas, 2016
The process of obtaining B100 biodiesel from vegetable oil and animal fat mixtures by transesterification under basic conditions was optimised using the super-modified simplex method.
Julyane Karolyne Teixeira da Costa   +5 more
doaj   +1 more source

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