Results 11 to 20 of about 496 (203)

Safety Evaluation of Hydrogen Pipeline Transport: an Approach Based on Machine Learning

open access: yesChemical Engineering Transactions, 2023
The issue of global warming imposes a change of paradigm in the energy sector to mitigate the human impact on the environment. In this perspective, hydrogen can be produced through water electrolysis and used in fuel-cell systems with near-zero pollutant
Abhishek Subedi   +3 more
doaj   +1 more source

Myoglobin: The hydrogen atom of biology and a paradigm of complexity [PDF]

open access: yesProceedings of the National Academy of Sciences, 2003
In a tour de force in this issue of PNAS, Bourgeois et al. (1) have used 2.2-ns x-ray pulses to observe the motion of carbon monoxide (CO) through myoglobin (Mb) and the relaxation of the protein from 3.2 ns to 3 ms after photodissociation. This work follows the pioneering experiments of Moffat and collaborators (2). It demonstrates how far advances in
H, Frauenfelder   +2 more
openaire   +2 more sources

Economic assessment of hydrogen production in a Renewable Energy Community in Italy

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy, 2023
Renewable Energy Community (REC) is a new paradigm in European Union to produce, transform, share and sell renewables at a local consumer level, also via e-fuel (i.e. hydrogen).
Giuseppe Spazzafumo, Giulio Raimondi
doaj   +1 more source

Unraveling chirality transfer mechanism by structural isomer-derived hydrogen bonding interaction in 2D chiral perovskite

open access: yesNature Communications, 2023
In principle, the induced chirality of hybrid perovskites results from symmetry-breaking within inorganic frameworks. However, the detailed mechanism behind the chirality transfer remains unknown due to the lack of systematic studies.
Jaehyun Son   +11 more
doaj   +1 more source

Molecular chemisorption: a new conceptual paradigm for hydrogen storage

open access: yesChemical Synthesis, 2022
Developing efficient hydrogen storage materials and the corresponding methods is the key to successfully realizing the “hydrogen economy”. The ideal hydrogen storage materials should be capable of reversibly ab-/desorbing hydrogen under mild temperatures with high hydrogen capacities.
Lang, Chengguang   +5 more
openaire   +2 more sources

Spatiotemporal Decoupling of Water Electrolysis for Dual-Use Grid Energy Storage and Hydrogen Generation

open access: yesCell Reports Physical Science, 2020
Summary: The implementation of electrolysis systems for electrochemical hydrogen production has continued to grow as the paradigm shift toward renewable energy and fuels progresses. However, issues regarding conventional polymer electrolyte membrane (PEM)
Daniel Frey   +3 more
doaj   +1 more source

Nitric oxide and hydrogen sulfide: the gasotransmitter paradigm of the vascular system [PDF]

open access: yesBritish Journal of Pharmacology, 2017
There are several reviews on NO and hydrogen sulfide (H2S) and their role in vascular diseases in the current relevant literature. The aim of this review is to discuss, within the limits of present knowledge, the interconnection between these two gasotransmitters in vascular function.
CIRINO, GIUSEPPE   +2 more
openaire   +3 more sources

Lewis Acid–Water/Alcohol Complexes as Hydrogen Atom Donors in Radical Reactions

open access: yesCHIMIA, 2013
Water or low molecular weight alcohols are, due to their availability, low price and low toxicity ideal reagents for organic synthesis. Recently, it was reported that, despite the very strong BDE of the O–H bond, they can be used as hydrogen ...
Guillaume Povie, Philippe Renaud
doaj   +1 more source

Value proposition of bio-hydrogen production from different biomass sources

open access: yesEnergy Nexus, 2023
Climate change is considered the most serious problem facing the planet, nowadays. The worldwide fossil fuel depletion and its environmental negative impact can be considered the main challenge in solving the environmental health crisis.
Eman Yehia Badawi   +2 more
doaj   +1 more source

Recent Achievements in Microalgal Photobiological Hydrogen Production

open access: yesEnergies, 2021
It is well known that over the last 60 years the trend of long-lived greenhouse gas emissions have shown a strong acceleration. There is an increasing concern and a mounting opposition by public opinion to continue with the use of fossil energy.
Eleftherios Touloupakis   +3 more
doaj   +1 more source

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