Results 91 to 100 of about 385,675 (250)

The current state of transition metal-based electrocatalysts (oxides, alloys, POMs, and MOFs) for oxygen reduction, oxygen evolution, and hydrogen evolution reactions

open access: yesFrontiers in Energy Research
Climate change is showing its impacts now more than ever. The intense use of fossil fuels and the resulting CO2 emissions are mainly to blame, accentuating the need to develop further the available energy conversion and storage technologies, which are ...
Henrique Araújo   +4 more
doaj   +1 more source

AC impedance study of degradation of porous nickel battery electrodes [PDF]

open access: yes
AC impedance spectra of porous nickel battery electrodes were recorded periodically during charge/discharge cycling in concentrated KOH solution at various temperatures. A transmission line model (TLM) was adopted to represent the impedance of the porous
Lenhart, Stephen J.   +2 more
core   +1 more source

Insights into a long life without cancer: The case of the bowhead whale

open access: yesMolecular Oncology, EarlyView.
Long‐lived, large‐bodied organisms have evolved powerful anticancer mechanisms that preserve cellular and tissue integrity across extended lifespans. A recent study by Firsanov et al. shows that greater genome stability is a key factor underlying the remarkable longevity and cancer resistance of one such species, the bowhead whale.
Inés Paniagua, Johanna A. Joyce
wiley   +1 more source

Exact and approximate expressions of energy generation rates and their impact on the explosion properties of Pair Instability Supernovae

open access: yes, 2015
Energetics of nuclear reaction is fundamentally important to understand the mechanism of pair instability supernovae (PISNe). Based on the hydrodynamic equations and thermodynamic relations, we derive exact expressions for energy conservation suitable to
Sumiyoshi, Kohsuke   +4 more
core   +1 more source

Spin-Promotion Effect to Oxygen Evolution Reaction

open access: yesAccounts of Chemical Research
ConspectusThe spin-promotion effect in the oxygen evolution reaction (OER) in ferromagnetic (FM) materials has recently received increasing interest. However, the mechanistic picture has not been clarified. Here, we present a comprehensive overview of the mechanisms behind the spin-promotion effect in the OER, bridging the atomic-scale spin interaction
Anke Yu   +3 more
openaire   +2 more sources

DNA methylation and expression of MAPRE3 affect overall survival of early‐stage non‐small cell lung cancer patients

open access: yesMolecular Oncology, EarlyView.
Both cg12821679MAPRE3 methylation and MAPRE3 expression are significantly associated with overall survival (OS) of non‐small cell lung cancer. Meanwhile, MAPRE3 expression significantly modified the effect of smoking cessation on OS. Smoking cessation benefits OS merely for patients with high MAPRE3 expression.
Chao Chen   +14 more
wiley   +1 more source

Paleoproterozic Icehouses and the Evolution of Oxygen Mediating Enzymes: The Case for a Late Origin of Photosystem -- II [PDF]

open access: yes, 2008
Two major geological problems regarding the origin of oxygenic photosynthesis are: (1) identifying a source of oxygen predating biological oxygen production and capable of driving the evolution of oxygen tolerance, and (2) determining when oxygenic ...
Kirschvink, Joseph L., Kopp, Robert E.
core  

USP29‐regulated noncanonical stabilization of the hypoxia‐inducible factor‐α in aggressive prostate cancer

open access: yesMolecular Oncology, EarlyView.
We identify USP29 as the only DUB mirroring CA9 expression, a marker of hypoxia and HIF pathway activation associated with PCA aggressiveness. USP29 stabilizes HIF‐1α and HIF‐2α via a noncanonical mechanism that is independent of PHD/pVHL activity yet relies on proteasomal regulation, establishing USP29 as a previously unrecognized regulator of hypoxic
Amelie S Schober   +16 more
wiley   +1 more source

The formation of unsaturated IrOx in SrIrO3 by cobalt-doping for acidic oxygen evolution reaction

open access: yesNature Communications
Electrocatalytic water splitting is a promising route for sustainable hydrogen production. However, the high overpotential of the anodic oxygen evolution reaction poses significant challenge.
Jia-Wei Zhao   +8 more
doaj   +1 more source

Co doped MoS2 as Bifunctional Electrocatalyst for Hydrogen Evolution and Oxygen Reduction Reactions

open access: yesInternational Journal of Electrochemical Science, 2019
Pure MoS2 and MoS2 compounds were doped with Co using a hydrothermal method. XRD results indicate that two of the five diffraction peak results at 9.2° and 18.2° may be attributed to low crystallinity of MoS2. The (002) diffraction peaks for the Co-doped
Congrong Wang   +9 more
doaj   +1 more source

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