Results 21 to 30 of about 24,143 (264)
Effect of gas on microstructure and thermal reactivity of coal during low temperature oxidation
Meitan kexue jishu, 2023 In order to investigate the microscopic physicochemical properties and macroscopic coal-oxygen complex thermal effects in the low-temperature oxidation of coal under gas atmosphere, different metamorphic coal and secondary oxidized coal samples as ...
DENG Jun +4 more
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Exothermic dark matter for XENON1T excess
Journal of High Energy Physics, 2021 Motivated by the recent excess in the electron recoil from XENON1T experiment, we consider the possibility of exothermic dark matter, which is composed of two states with mass splitting.
Hyun Min Lee
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Partial Differential Equations in Applied Mathematics, 2021 The present study is designed to model the combustible materials of two vertical plates with Arrhenius energy and exothermic chemical reaction. The magnetohydrodynamics fluid is considered to experience an exothermic chemical reaction inside the channel.
Adebowale Martins Obalalu +6 more
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METHANOL STEAM REFORMING FOR HYDROGEN PRODUCTION IN MICROCHANNEL REACTORS
Chemical Engineering Journal Storage, 2022 Many attempts have been made to improve heat transfer for thermally integrated microchannel reforming reactors. However, the mechanisms for the effects of design factors on heat transfer characteristics are still not fully understood.
Junjie Chen
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Eurasian Chemico-Technological Journal, 2018 Exothermic riser (feeder) sleeves are used to retain the heat in risers and to increase solidification duration. A riser should be enough hot to become the last solidified part in a mould cavity.
O. Yucel, A. Turan, K. C. Candeger
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Meitan xuebaoIn order to investigate the evolution characteristics of the key groups and their thermal effects under the effect of oxygen-depleted, the thermal reaction process of coal under different oxygen concentrations and the change law of its microscopic groups
Yuanbo ZHANG +5 more
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Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications
FEBS Open Bio, EarlyView.This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley +1 more source
The formation of ice mantles on interstellar grains revisited – the effect of exothermicity [PDF]
Faraday Discuss., 2014 Modelling of grain surface chemistry generally deals with the simulation of rare events. Usually deterministic methods or statistical approaches such as the kinetic Monte Carlo technique are applied for these simulations. All assume that the surface processes are memoryless, the Markov chain assumption, and usually also that their rates are time ...
T. Lamberts +2 more
openaire +2 more sources
Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.The growing demand for lightweight, nontoxic, and multifunctional gamma shielding materials has intensified efforts to find alternatives to conventional lead and aluminum‐based protectants. In this work, we develop epoxy quartz fabric composites reinforced with cobalt chloride (CoCl2) microparticles, fabricated via hand lay‐up with varying filler ...
Summan Urooge +7 more
wiley +1 more source