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Investigating the "mixoplankton" paradigm using hydrogen isotope ratios

2023
Since micro-organisms were first visualised by Robert Hooke and Antoni van Leeuwenhoek, bacteria and protists were quickly categorised as either primary producers or consumers and thus forming the base of the marine food web. New conceptual understanding sees this traditional dichotomy between autotrophs and heterotrophs in the marine food web replaced
Marc-Andre Cormier   +4 more
openaire   +1 more source

Yolk-shell nanostructures as an emerging photocatalyst paradigm for solar hydrogen generation

Nano Energy, 2019
Abstract With porous shells and mobile cores, yolk-shell nanostructures provide great structural advantage for mass transport-related applications such as photocatalysis. In this work, Au–Cu7S4 yolk-shell nanostructures are synthesized from Au–Cu2O core-shell templates.
Yi-Hsuan Chiu   +7 more
semanticscholar   +2 more sources

Alkyne Hydrogenation over Pd Catalysts: A New Paradigm

Journal of Catalysis, 2006
The hydrogenation of 1-pentyne over various palladium catalysts was studied under different conditions. In the regime of selective hydrogenation, as observed by in-situ X-Ray Photoelectron Spectroscopy (XPS), significant amount of subsurface carbon and a Pd-C surface phase builds up in the early stage of the reaction.
Teschner, D.   +14 more
openaire   +3 more sources

Tech-integrated paradigm based approaches towards carbon-free hydrogen production

Renewable and Sustainable Energy Reviews, 2018
Abstract Because of the predicted energy crisis and increasing concerns about high carbon emissions, identifying and building sustainable energy systems has been the focus of recent energy research, with the idea of a viable “hydrogen economy” becoming increasingly popular. This paper provides functional guidance for the transition from a fossil fuel-
Jiuping Xu   +4 more
semanticscholar   +2 more sources

Hydrogen Exchange Kinetics of RNase A and the Urea:TMAO Paradigm

Biochemistry, 2003
A key paradigm in the biology of adaptation holds that urea affects protein function by increasing the fluctuations of the native state, while trimethylamine N-oxide (TMAO) affects function in the opposite direction by decreasing the normal fluctuations of the native ensemble.
Youxing, Qu, D Wayne, Bolen
openaire   +2 more sources

Proton and hydrogen atom transfer in hydrogen bonded clusters: Ammonia as a paradigm

The Journal of Chemical Physics, 1997
The competition between proton and hydrogen atom transfer in ammonia clusters is studied in the excited C̃′ state using femtosecond pump-probe spectroscopy. Little effect of solvation is seen for the case of proton transfer, while the hydrogen transfer processes display significant dependence on the degree of clustering.
E. M. Snyder, A. W. Castleman
openaire   +1 more source

The Hydrogen Paradigm and Global Hydrogen Transition—Environmental Challenges and Strategic Steps towards a Sustainable Energy System

Energy Engineering
: Discussions about the future of energy sources and environmental sustainability are becoming critical on a global scale. The energy sector plays a central role in the economy, as the availability and cost of energy influence the competitiveness of ...
Melita Srpak   +3 more
semanticscholar   +1 more source

Elusive hypervalent phosphorusπ interactions: evidence for paradigm transformation from hydrogen to phosphorus bonding at low temperatures.

Physical Chemistry, Chemical Physics - PCCP, 2019
The π electron systems are the conventional electron donors to the hydrogen acceptors in hydrogen bonding. Apart from the hydrogen atom, halogens, chalcogens, pnicogens and triel/tetrel atoms can also be envisaged as electron acceptors involving π clouds.
P. Sruthi   +3 more
semanticscholar   +1 more source

A New Paradigm in Pincer Iridium Chemistry: PCN Complexes for (De)Hydrogenation Catalysis and Beyond

Accounts of Chemical Research, 2022
The discovery and development of organometallic catalysts is of paramount importance in modern organic synthesis, among which the ligand scaffolds play a crucial role in controlling the activity and selectivity. Over the past several decades, d8 transition-metal complexes of pincer ligands have been developed extensively thanks to their easy structural
Yulei Wang   +3 more
openaire   +2 more sources

Green Hydrogen for Energy Transition: A Critical Perspective

Energies
Green hydrogen (GH2) is emerging as a key driver of global energy transition, offering a sustainable pathway to decarbonize energy systems and achieve climate objectives.
R. Angelico   +3 more
semanticscholar   +1 more source

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