Results 1 to 10 of about 3,415,354 (298)

Metal-Hydride-Based Hydrogen Storage as Potential Heat Source for the Cold Start of PEM FC in Hydrogen-Powered Coaches: A Comparative Study of Various Materials and Thermal Management Techniques

open access: yesHydrogen, 2022
The successful and fast start-up of proton exchange membrane fuel cells (PEMFCs) at subfreezing temperatures (cold start) is very important for the use of PEMFCs as energy sources for automotive applications. The effective thermal management of PEMFCs is
Evangelos I. Gkanas   +3 more
doaj   +1 more source

Capacity fade detection in lithium-ion batteries using non-linear frequency response analysis (NFRA) under multiple open-circuit voltages (OCVs)

open access: yesElectrochemistry Communications, 2022
Determination of residual capacity, or ‘state of health’ (SOH), is important for the management of battery assets in service and when assessing batteries for re-use at the end of service.
Danial Sarwar   +5 more
doaj   +1 more source

A 3D Transient CFD Simulation of a Multi-Tubular Reactor for Power to Gas Applications

open access: yesEnergies, 2022
A 3D stationary CFD study was conducted in our previous work, resulting in a novel reactor design methodology oriented to upgrading biogas through CO2 methanation.
Victor Soto   +2 more
doaj   +1 more source

A high efficiency gas phase photoreactor for eradication of methane from low-concentration sources

open access: yesEnvironmental Research Letters, 2023
Despite the urgent need, very few methods are able to efficiently remove methane from waste air with low cost and energy per unit volume, especially at the low concentrations found in emissions from e.g. wastewater treatment, livestock production, biogas
Morten Krogsbøll   +2 more
doaj   +1 more source

A CFD Design Approach for Industrial Size Tubular Reactors for SNG Production from Biogas (CO2 Methanation)

open access: yesEnergies, 2021
A tubular reactor based on the disk and doughnut concept was designed as an engineering solution for biogas upgrading via CO2 methanation. CFD (Computational Fluid Dynamics) benchmarks agreed well with experimental and empirical (correlation) data ...
Victor Soto   +2 more
doaj   +1 more source

Acknowledgment to the Reviewers of C-Journal of Carbon Research in 2022

open access: yesC, 2023
High-quality academic publishing is built on rigorous peer review [...]
C-Journal of Carbon Research Editorial Office
doaj   +1 more source

Editorial for “Properties and Applications of Graphene and Its Derivatives”

open access: yesNanomaterials, 2022
Since the very first landmark report by Geim and Novoselov in 2004 on graphene [...]
Jose M. González-Domínguez
doaj   +1 more source

Contribution of Carbon Concrete Construction to the Circular and Resource Economy

open access: yesBuildings, 2023
Fibre-reinforced composites are used in many industries. In the construction industry, for example, the building material carbon concrete is increasingly being used successfully.
Jan Kortmann, Stefan Minar
doaj   +1 more source

A two-phase approach to re-calibrating expensive computer simulation for sex-specific colorectal neoplasia development modeling

open access: yesBMC Medical Informatics and Decision Making, 2022
Background Medical evidence from more recent observational studies may significantly alter our understanding of disease incidence and progression, and would require recalibration of existing computational and predictive disease models.
Carolina Vivas-Valencia   +4 more
doaj   +1 more source

Galactic R Coronae Borealis Stars: The C-2 Swan Bands, The Carbon Problem, And The C-12/C-13 Ratio [PDF]

open access: yes, 2012
Observed spectra of R Coronae Borealis (RCB) and hydrogen-deficient carbon (HdC) stars are analyzed by synthesizing the C-2 Swan bands (1, 0), (0, 0), and (0, 1) using our detailed line list and the Uppsala model atmospheres.
Hema, B. P.   +2 more
core   +1 more source

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