Results 61 to 70 of about 40,950 (298)

Time Evolution of CO2 Diffusivity of Carbonated Concrete

open access: yesApplied Sciences, 2020
Carbonation of cementitious materials is one of main causes of reinforcement corrosion and CO2 diffusivity influenced by microstructural characteristics of the cementitious materials is a decisive parameter for the carbonation rate. This study focused on
In-Seok Yoon, Chun-Ho Chang
doaj   +1 more source

Evolution of microstructure and transport properties of cement pastes due to carbonation under a CO2 pressure gradient: a modeling approach [PDF]

open access: yes, 2015
Most carbonation models only account for diffusion as the main transport mechanism rather than advection. Nevertheless, in the case of concrete used for underground waste disposal facilities, concrete may be subjected to a high hydrostatic pressure and ...
De Schutter, Geert   +4 more
core   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

open access: yesAdvanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo   +3 more
wiley   +1 more source

Effect of Air Velocity and Temperature on Energy and Effective Moisture Diffusivity for Russian Olive (Elaeagnusan gastifolial L.) in Thin-Layer Drying [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2012
Thin layer drying of Russian olive (Elaeagnusan gastifolial L.) fruit using a hot air dryer in order to calculate effective moisture diffusivity, activation energy and energy consumption has been evaluated in this article. The selected variables included
Ahmad Abbaszadeh   +4 more
doaj  

Bioactive compounds’ contents, drying kinetics and mathematical modelling of tomato slices influenced by drying temperatures and time

open access: yesJournal of the Saudi Society of Agricultural Sciences, 2019
This study investigated the influence of drying temperature, and time on antioxidant activity, phenolic, flavonoid, lycopene and β – carotene contents of tomato slices.
Luqmon Azeez   +4 more
doaj   +1 more source

Macro- and microscale gaseous diffusion in a Stagnic Luvisol as affected by compaction and reduced tillage [PDF]

open access: yes, 2008
Intensification of mechanical agriculture has increased the risk for soil compaction and deformation. Simultaneously, reduced tillage practices have become popular due to energy saving and environmental concerns, as they may strengthen and improve the ...
Fazekas-Becker, Orsolya   +2 more
core   +3 more sources

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz   +4 more
wiley   +1 more source

Studying the drying characteristics and quality attributes of chili pepper at different maturity stages: Experimental and mechanistic model

open access: yesCase Studies in Thermal Engineering, 2021
The drying characteristics of chili pepper at three maturity stages under different drying conditions were studied under a hot air drying cabinet. The drying was performed at a relative humidity of 25%, 35%, and 45% and temperatures of 40 °C, 50 °C, and ...
Eshetu Getahun   +4 more
doaj   +1 more source

Sustainable earth walls to meet the building regulations [PDF]

open access: yes, 2004
The thermal conductivity and diffusivity of un-fired clay bricks, a straw clay mixture and straw bales have been measured using a thermal probe technique, with an iterative method for data analysis. The steady-state air-to-air thermal transmittance, or U-
Allen   +6 more
core   +1 more source

Effect of functional form of moisture diffusivity on moisture absorption

open access: yes, 1994
International Energy Agency, IEA Annex 24, Heat, Air and Moisture Transfer Through New and Retrofitted Insulated Envelope Parts, 1994 ...
Salonvaara, Mikael, Karagiozis, Achilles
openaire   +1 more source

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