Results 21 to 30 of about 13,430,212 (340)

Boosting the Higher Heating Value of Eucalyptus globulus via Thermochemical Liquefaction

open access: yesSustainability, 2021
Biomass can be envisaged as a potential solution to mitigate the problems that the extensive exploitation of fossil sources causes on the environment.
F. Fernandes   +8 more
semanticscholar   +1 more source

By-products from methyl ester oil production and their thermal-emission properties

open access: yesResearch in Agricultural Engineering, 2008
With the exhaustion of fossil energy sources in sight, the importance of the renewable sources of energy becomes one of the major conditions for permanently sustainable development not only in agriculture, but also in the society as a whole.
J. Bradna, J. Malaťák
doaj   +1 more source

Equilibrium Simulations of Coal Gasification – Factors Affecting Syngas Composition

open access: yesJournal of Sustainable Mining, 2014
Purpose: Coal gasification is complex technology, which results depend on many variables, connected among others with fuel, the converting agent and the process itself.
Alina Żogała
doaj   +1 more source

Some Properties of White and Torrefied Pellets Obtained from Oil Palm Trunk as Raw Material

open access: yesBioResources, 2022
Properties of unheated wood pellets were compared with those of torrefied wood pellets that had been heated to 270, 290, and 310 °C, with raw material taken from two different height levels of oil palm trunk (OPT).
Aujchariya Chotikhun   +6 more
doaj   +2 more sources

Stability of radiation-pressure dominated disks. I. The dispersion relation for a delayed heating alpha-viscosity prescription [PDF]

open access: yes, 2011
We derive and investigate the dispersion relation for accretion disks with retarded or advanced heating. We follow the alpha-prescription but allow for a time offset (\tau) between heating and pressure perturbations, as well as for a diminished response ...
A. Ciesielski   +20 more
core   +4 more sources

Torrefaction Characteristics of Blended Ratio of Sewage Sludge and Sugarcane Bagasse for Energy Production

open access: yesApplied Sciences, 2021
Torrefaction is a thermal pretreatment technique usually adopted for improving biomass properties to be on par with that of coal for energy production.
Nwokolo Nwabunwanne   +5 more
doaj   +1 more source

Effects of water pretreatment on properties of pellets made from beech particles [PDF]

open access: yesHemijska Industrija, 2021
Particles of beech wood were treated with hot water at the temperature of 150 oC, during 60 min, prior to the pelleting process. The applied hot water pretreatment affected the chemical composition and heating value of particles.
Popović Jasmina J.   +5 more
doaj   +1 more source

Constraint on intergalactic dust from thermal history of intergalactic medium [PDF]

open access: yes, 2002
This Letter investigates the amount of dust in the intergalactic medium (IGM). The dust photoelectric heating can be the most efficient heating mechanism in the IGM where the density is very small and there are a lot of hard ultraviolet photons ...
Inoue, Akio K., Kamaya, Hideyuki
core   +2 more sources

Formation of Fluctuations in the Molecular Slab via Isobaric Thermal Instability [PDF]

open access: yes, 2007
The frictional heating by ion-neutral drift is calculated and its effect on isobaric thermal instability is carried out. Ambipolar drift heating of one-dimensional self-gravitating magnetized molecular slab is used under the assumptions of quasi ...
Nejad-Asghar, M.
core   +1 more source

Work and heat value of bound entanglement [PDF]

open access: yesQuantum Information Processing, 2019
Entanglement has recently been recognized as an energy resource which can outperform classical resources if decoherence is relatively low. Multi-atom entangled states can mutate irreversibly to so called bound entangled (BE) states under noise. Resource value of BE states in information applications has been under critical study and a few cases where ...
Aslı Tuncer   +4 more
openaire   +6 more sources

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