Results 101 to 110 of about 155,151 (257)

NIR Femtosecond Control of Resonance-Mediated Generation of Coherent Broadband UV Emission

open access: yes, 2007
We use shaped near-infrared (NIR) pulses to control the generation of coherent broadband ultraviolet (UV) radiation in an atomic resonance-mediated (2+1) three-photon excitation.
Amitay   +46 more
core   +1 more source

A Quantitative Lithium Inventory Framework for Anode‐Free Lithium Metal Batteries

open access: yesAdvanced Energy Materials, EarlyView.
A component‐resolved lithium inventory framework quantitatively tracks Li redistribution across the cell in anode‐free NMC622||Cu pouch cells throughout cycling. Three sequential degradation stages are identified: formation‐driven cathode Li depletion, midlife inactive Li0 accumulation, and late‐stage runaway SEI thickening. The cathode, as the sole Li
Wurigumula Bao   +9 more
wiley   +1 more source

Natural Elicitor 3,4-Dihydroxy-3-Methyl-2-Pentanone Induces Disease Resistance in Arabidopsis thaliana via Stereoisomer-Specific Activation of Defence Pathways

open access: yesPlants
In contrast to bactericides, elicitors induce plant immune systems to defend against pathogen attack and avoid potential damage to the environment. However, the energy cost caused by the continuous activation of immunity leads to the inhibition of plant ...
Ronghua Chen   +5 more
doaj   +1 more source

Design, Control, and Clinical Applications of Magnetic Actuation Systems: Challenges and Opportunities

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This review aims to provide a broad understanding for interdisciplinary researchers in engineering and clinical applications. It addresses the development and control of magnetic actuation systems (MASs) in clinical surgeries and their revolutionary effects in multiple clinical applications.
Yingxin Huo   +3 more
wiley   +1 more source

Protonation/reduction dynamics at the [4Fe–4S] cluster of the hydrogen-forming cofactor in [FeFe]-hydrogenases [PDF]

open access: yes, 2018
The [FeFe]-hydrogenases of bacteria and algae are the most efficient hydrogen conversion catalysts in nature. Their active-site cofactor (H-cluster) comprises a [4Fe–4S] cluster linked to a unique diiron site that binds three carbon monoxide (CO) and two
Apfel, Ulf-Peter   +11 more
core   +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  

Band-gap engineering in AB(O$_x$S$_{1-x}$)$_{3}$ perovskite oxysulfides: A route to strongly polar materials for photocatalytic water splitting [PDF]

open access: yes, 2019
Polar heterogeneous photocatalysts were shown to lead to enhanced charge-carrier separation that results in superior activity for example for photocatalytic water splitting.
Aschauer, Ulrich, Vonrüti, Nathalie
core   +2 more sources

Exposure‐adjusted safety and efficacy of GLP‐I and GLP‐1/GIP receptor agonists compared with non‐GLP‐I for weight management and type 2 diabetes: Based on FDA medical and statistical reports of 34 280 safety and 36 312 efficacy subjects

open access: yesBritish Journal of Clinical Pharmacology, EarlyView.
Aims This work aimed to contextualize glucagon‐like peptide‐1 receptor agonists (GLP‐1 RAs) and glucose‐dependent insulinotropic polypeptide (GIP) receptor agonists safety and efficacy regarding weight management (WM); we analysed Food and Drug Administration (FDA) Medical Reviews to analyse 14 medications using patient‐exposure year normalization and ...
Aishwarya Prasad   +4 more
wiley   +1 more source

Defect engineering for highly efficient and stable perovskite top cells for Si tandems

open access: yesBulletin of the Korean Chemical Society, EarlyView.
Defect passivation in wide‐bandgap perovskites is essential for enabling high‐efficiency and stable perovskite/Si tandem solar cells. Bulk, surface, and buried‐interface passivation strategies focus on suppressing nonradiative recombination, ion migration, and halide segregation, thereby clarifying critical design principles for next‐generation tandem ...
Ju Yeong Hong   +2 more
wiley   +1 more source

Ubiquinone Biosynthesis over the Entire O2 Range: Characterization of a Conserved O2-Independent Pathway

open access: yesmBio, 2019
Most bacteria can generate ATP by respiratory metabolism, in which electrons are shuttled from reduced substrates to terminal electron acceptors, via quinone molecules like ubiquinone.
Ludovic Pelosi   +16 more
doaj   +1 more source

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