Results 31 to 40 of about 6,096 (215)

Reply to “Comment on ‘Natural Bond Orbitals and the Nature of the Hydrogen Bond’” [PDF]

open access: yesThe Journal of Physical Chemistry A, 2018
Most of the Comment by Weinhold and Glendening (WG) (1) does not address the criticism of the natural bond orbital (NBO) approach to charge transfer set out in Stone’s paper (2) but seeks to find fault with symmetry-adapted perturbation theory (SAPT), although Stone’s criticism does not depend on comparisons with SAPT.
Stone, Anthony J, Szalewicz, Krzysztof
openaire   +2 more sources

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Radiolysis and Fe‐Biotite Alteration: Questioning the Origin of H2‐Bearing Fluid Inclusions in the Yorke Peninsula Granites, South Australia

open access: yesGeochemistry, Geophysics, Geosystems
Multiple drillings in the Yorke Peninsula, South Australia, recently confirmed the presence of natural hydrogen (H2) in shallow sedimentary units. While radiolysis and Fe‐oxidation in the basement are potential generation mechanisms, their respective ...
Ugo Geymond   +15 more
doaj   +1 more source

Natural Hydrogen, the Ultimate Green Energy: Current Status and Prospects [PDF]

open access: yes대한환경공학회지
Natural hydrogen is green hydrogen that is naturally produced on Earth, that is, an energy source that does not emit carbon without using additional energy for production.
Minji Park   +4 more
doaj   +1 more source

Up-to-Date Status of Geoscience in the Field of Natural Hydrogen with Consideration of Petroleum Issues

open access: yesEnergies, 2023
The perspective of natural hydrogen as a clear, carbon-free, and renewable energy source appears very promising. There have been many studies reporting significant concentrations of natural hydrogen in different countries.
Dariusz Knez, Omid Ahmad Mahmoudi Zamani
doaj   +1 more source

Natural Bond Orbitals and the Nature of the Hydrogen Bond

open access: yesThe Journal of Physical Chemistry A, 2017
The charge-transfer component of the energy of interaction between molecules has been a controversial issue for many years. In particular, the values reported from the use of the natural bond orbital analysis of Weinhold and his co-workers are several times larger than those obtained by other methods.
openaire   +2 more sources

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Natural H2 Transfer in Soil: Insights from Soil Gas Measurements at Varying Depths

open access: yesGeosciences
The exploration of natural H2 is beginning in several countries. One of the most widely used methods for detecting promising areas is to measure the H2 percentage of the air contained in soils. All data show temporal and spatial variabilities.
Cesar Patino   +4 more
doaj   +1 more source

Research progress on hydrogen embrittlement in hydrogen-blended natural gas transportation system

open access: yesYou-qi chuyun, 2022
Hydrogen-blended natural gas transportation can effectively solve the problem of wind and photovoltaic energy curtailment and reduction of greenhouse gas emission, and realize the low-cost transportation of hydrogen in large scale, so it becomes an ...
Weiqing XU   +7 more
doaj   +1 more source

Perspectives and prospects of underground hydrogen storage and natural hydrogen

open access: yesSustainable Energy & Fuels, 2022
Advancements in UHS research should be matched with new field development studies on natural hydrogen exploration and production.
Emmanuel I. Epelle   +7 more
openaire   +1 more source

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