Results 21 to 30 of about 1,078,562 (296)

Applications of Ferric Oxide in Water Splitting by Electrolysis: A Comprehensive Review

open access: yesMolecules
In water electrolysis, the use of an efficient catalyst derived from earth-abundant materials which is cost-effective and stable is essential for the economic sustainability of hydrogen production.
Bruno G. Pollet, Shankara S. Kalanur
doaj   +1 more source

Analysis of Coupling Effect Between Green Hydrogen Trading Market and Electricity Market Under Carbon Trading Policy

open access: yes南方能源建设, 2023
[Introduction] To achieve the "carbon peak and neutrality" goals, the ways for enterprise energy conservation and emission reduction need to fully explored, and the green and low-carbon policy tools should be fully exploited.
Haoran WANG   +3 more
doaj   +1 more source

An embedding scheme for the Dirac equation

open access: yes, 2004
An embedding scheme is developed for the Dirac Hamiltonian H. Dividing space into regions I and II separated by surface S, an expression is derived for the expectation value of H which makes explicit reference to a trial function defined in I alone, with
Abramowitz M   +27 more
core   +1 more source

The Separation of the Two Types of Iodine Molecule and the Photochemical Reaction of Gaseous Iodine with Hexene [PDF]

open access: yes, 1930
Soon after Dennison had deduced from the specific-heat curve that ordinary hydrogen gas consists of a mixture of two types of molecule, the so called ortho and para hydrogen, a similar state of affairs in the case of iodine gas was demonstrated by direct
Badger, R. M., Urmston, J. W.
core   +1 more source

Toward Reliable FOWT Modeling: A New Calibration Approach for Extreme Environmental Loads

open access: yesEnergies
The current paper presents a comparative analysis between a high-fidelity simulation tool and computational fluid dynamics (CFD) in evaluating the behavior of a fully coupled floating offshore wind turbine (FOWT) system subjected to three distinct design
Ho-Seong Yang   +2 more
doaj   +1 more source

An overview of the socio-economic impacts of the green hydrogen value chain in Southern Africa

open access: yesJournal of Energy in Southern Africa, 2022
The green hydrogen economy offers synthetic green energy with significant impacts and is environmentally friendly compared to current fossil-based fuels.
Simeon Shiweda Hamukoshi   +3 more
doaj   +1 more source

A Comprehensive Spectroscopic Analysis of DB White Dwarfs [PDF]

open access: yes, 2011
We present a detailed analysis of 108 helium-line (DB) white dwarfs based on model atmosphere fits to high signal-to-noise optical spectroscopy. We derive a mean mass of 0.67 Mo for our sample, with a dispersion of only 0.09 Mo. White dwarfs also showing
A. Beauchamp   +51 more
core   +1 more source

Variational Two Fermion Wave Equations in QED: Muonium Like Systems

open access: yes, 2003
We consider a reformulation of QED in which covariant Green functions are used to solve for the electromagnetic field in terms of the fermion fields. The resulting modified Hamiltonian contains the photon propagator directly.
Andrei G. Terekidi   +10 more
core   +1 more source

The INGRID project: Development of Solutions for Sustainable and Highly Interconnected Grids [PDF]

open access: yes, 2015
One of the current main challenges in green-power storage and smart grids is the lack of effective solutions for accommodating the unbalance between renewable energy sources - offering intermittent electricity supply - and a variable electricity demand ...
A Zaluska   +4 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

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