Results 181 to 190 of about 67,957 (294)

Substitutional Sulfur and Its Vibrational Fingerprints in Sb2Se3

open access: yesphysica status solidi (RRL) – Rapid Research Letters, EarlyView.
The microscopic configurations of sulfur incorporated into the Sb2$_2$Se3$_3$ lattice are studied by combining infrared absorption spectroscopy with density functional theory. Substitutional SSe$_{\mathrm{Se}}$ defects are identified as the origin of four distinct sulfur‐related local vibrational modes at 249, 273, 283, and 312 cm−1$^{-1}$.
Frank Herklotz   +6 more
wiley   +1 more source

Homogeneous sulfur isotope signature in East Antarctica and implication for sulfur source shifts through the last glacial-interglacial cycle. [PDF]

open access: yesSci Rep, 2019
Ishino S   +8 more
europepmc   +1 more source

Exploring the Fragmentation of Sodiated Species Involving Covalent‐Bond Cleavages for Metabolite Characterization

open access: yesRapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale Electrospray (ESI), the most popular desorption/ionization technique used in mass spectrometry‐based metabolomics, generates both protonated and deprotonated molecules, as well as adduct ions, sodium being the most frequent monoatomic cation entering their composition.
Annelaure Damont   +9 more
wiley   +1 more source

Versatile High‐Sensitivity EPR Using Superconducting Spiral Microresonators

open access: yesSmall Methods, EarlyView.
A significant sensitivity enhancement in conventional X‐band pulsed EPR is achieved using planar spiral microresonators fabricated from high‐temperature superconducting YBCO. Fully compatible with standard instrumentation, the approach enables high‐fidelity spin control under typical sample conditions.
Gediminas Usevičius   +18 more
wiley   +1 more source

A simple and reliable method reducing sulfate to sulfide for multiple sulfur isotope analysis. [PDF]

open access: yesRapid Commun Mass Spectrom, 2018
Geng L   +7 more
europepmc   +1 more source

Recent Advances in Bioconjugation of Aromatic Amino Acid Residues by a Reactivity‐Guided Approach

open access: yesThe Chemical Record, EarlyView.
This review highlights recent advances in the bioconjugation of aromatic amino acids residues, focusing on strategies that leverage their inherent chemical reactivity to enable precise and versatile modifications of biomacromolecules, illustrating relevant applications.
Bruno M. da S. Santos   +3 more
wiley   +1 more source

Titanium Detected in Liver, Kidney, Spleen, and Intestine Is Not Related to Dose, Time, or Route of Exposure to Titanium Dioxide: A Systematic Review

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Titanium dioxide (TiO2), used as a food additive (labeled E171 in Europe), was withdrawn from the European market in 2022. The E171 toxicity mechanism involves its uptake, oxidative stress, DNA damage, and inflammation. It has been hypothesized that the TiO2 accumulation nanoparticles (NPs) or E171 triggers tissue damage, and some studies have
Carmen Ximena Martínez‐Escutia   +3 more
wiley   +1 more source

Mass spectrometry‐based mitochondrial proteomics for cancer biomarker discovery

open access: yesVIEW, EarlyView.
Figure.1 Schematic diagram of MS‐based mitochondrial proteomics for cancer biomarker discovery. The workflow highlights the integration of advanced technological platforms in mitochondrial proteomics and their application in cancer biomarker discovery.
Zheng Cao   +6 more
wiley   +1 more source

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