Results 131 to 140 of about 1,430,726 (305)

EPR and optical spectroscopy of SrF2 doped with Yb3+ [PDF]

open access: yes, 2001
The trigonal paramagnetic Yb3+ ion in SrF2 is investigated. The analysis used EPR and optical spectroscopy. The energy level scheme of the center is determined from its optical spectra and the parameters of the crystal field potential are ...
Leushin A.   +5 more
core  

High‐Current‐Density Acidic CO2 Electroreduction to Formic Acid Enabled by Multiscale Microenvironment Regulation Over Defect‐Rich Sn/SnOx

open access: yesAdvanced Science, EarlyView.
Acidic CO2 electroreduction to formic acid is enabled by integrating mixed Sn/SnOx nanoclusters, K+‐regulated interfacial solvation, and Janus wettability. Coordinated control of active sites, interfacial water, and gas‐liquid transport suppresses hydrogen evolution and delivers approximately 85% HCOOH Faradaic efficiency at 400 mA cm−2.
Qiaoqi Guo   +8 more
wiley   +1 more source

Electron paramagnetic resonance studies of free radicals: The research legacy of Janko N. Herak

open access: yesActa Pharmaceutica
This review presents a chronological analysis of the scientific contributions of Professor Janko N. Herak (1937–2025), a Croatian biophysicist whose research played a major role in the development of electron para-magnetic resonance (EPR) spectroscopy in
Bešić Erim   +2 more
doaj   +1 more source

Investigation of a 1.1-GHz CW-EPR spectroscopy using frequency modulation

open access: yes, 2003
International Symposium on the Instrumentation of EPR Spectroscopy ・in commemoration of Professor Ono for his contribution to EPR and Microwave Engineeringconference ...
Ono, Mitsuhiro   +5 more
core  

Permanent Oxidative Dipole Engineering in Quinoline COFs for Boosting Exciton Dissociation and Oxygen Activation in H2O2 Photosynthesis

open access: yesAdvanced Science, EarlyView.
Permanent oxidative dipole (POD) engineering overcomes the electronic uniformity of quinoline‐linked COFs. By enhancing the dipole moment to 2.08 D and lowering exciton binding energy to 20.3 meV, it constructs a robust built‐in electric field and spatially decoupled redox centers. This bypasses inherent kinetic bottlenecks, achieving a 4569 µmol g−1 h−
Yong‐Quan Wu   +2 more
wiley   +1 more source

Hyperfine interactions of paramagnetic radiation-induced defect centres in advanced ceramic breeder pebbles

open access: yesNuclear Materials and Energy
Advanced ceramic breeder (ACB) pebbles consisting of 65 mol% lithium orthosilicate (Li4SiO4) and 35 mol% lithium metatitanate (Li2TiO3) are developed for tritium breeding in the European Union’s (EU) helium cooled pebble bed (HCPB) breeder blanket ...
Andris Antuzevics   +7 more
doaj   +1 more source

Antioxidant Co-actions of Ascorbic and Dihydroxyfumaric Acids Investigated by EPR Spectroscopy

open access: yes
The intricate dynamics of antioxidant interactions holds promise for innovating formulations to reduce patient antioxidants doses and prolong efficacy, these aspects being also important for other industrial applications, such as food preservation.
Alexandra Sârghi   +3 more
core   +1 more source

Unlocking Li/Mg‐Based Photochemical Nitration Platforms for Anticancer Drug Discovery

open access: yesAdvanced Science, EarlyView.
Two low‐toxicity light main‐group metal photochemical systems based on lithium and magnesium are constructed for selective C(sp2)‐H (di)nitration of anilines. The obtained dinitrated products exhibit anti‐HCC (hepatocellular carcinoma) and anti‐KYSE30 cell activities, holding promise as novel antitumor candidates.
Qian Wan   +13 more
wiley   +1 more source

The In Situ Electrochemical−Chemical Cascade Strategy for Pyruvic Acid Synthesis

open access: yesAdvanced Science, EarlyView.
By employing an “unsaturation−oxygen coordination engineering” strategy, the local coordination environment is regulated to achieve efficient electrochemical synthesis of H2O2. Importantly, an electrochemical−chemical coupled cascade strategy is utilized for the efficient preparation of pyruvic acid via lactic acid oxidation. ABSTRACT Hydrogen peroxide
Xueli Mei   +6 more
wiley   +1 more source

Combining the Spin-Trap Methodology with EPR Spectroscopy to Investigate the Antioxidant Activity of Beer

open access: yes
openQuesto esperimento di laboratorio utilizza un'esplorazione della stabilità allo stoccaggio della birra per introdurre aspetti fondamentali della spettroscopia a risonanza paramagnetica elettronica (EPR).
SOVILLA, ANDREA
core  

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