Results 41 to 50 of about 389,522 (309)

Pulsed and continuous-wave magnetic resonance spectroscopy using a low-cost software-defined radio

AIP Advances, 2019
Software-defined radios (SDRs) constitute a modern and highly adaptive realization of a radio-frequency transceiver system. This work demonstrates how a particular radio transceiver, namely, the LimeSDR board, can be configured for pulsed and continuous ...
A. Doll
doaj   +1 more source

Pressure Influence on the Stability and Formation of γ - Fe4N when Transformed into Fe4O [PDF]

Materials Research, 2013
The improved technology has allowed the study of electronic structure of solids with a complex crystalline structure and containing various atoms, different in the unit cell, and thus we can calculate the energy of formation and obtaining the bulk ...
A. V. dos Santos, J. V. Santos, Marcos A. Costa   +2 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

First Principles Calculations on the Stoichiometric and Defective (101) Anatase Surface and Upon Hydrogen and H2Pc Adsorption: The Influence of Electronic Exchange and Correlation and of Basis Set Approximations

Frontiers in Chemistry, 2019
Anatase TiO2 provides photoactivity with high chemical stability at a reasonable cost. Different methods have been used to enhance its photocatalytic activity by creating band gap states through the introduction of oxygen vacancies, hydrogen impurities ...
Ruth Martínez-Casado, Ruth Martínez-Casado, Milica Todorović, Giuseppe Mallia, Nicholas M. Harrison, Rubén Pérez, Rubén Pérez   +6 more
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Electrochemical Metallization Memristive Devices with Al Active Electrode Using Engineered Mixed Hexagonal/Orthorhombic Polycrystalline YMnO3

Small Structures
We report electrochemical metallization (ECM) resistive switching in polycrystalline YMnO3 memristive devices using Al as an active electrode. Al/YMnO3/Pt devices exhibit bipolar resistive switching with a high ROFF/RON ratio of 104, low operational ...
Rong Wu, Sebastian W. Schmitt, Florian Maudet, Dong Jik Kim, Veeresh Deshpande, Catherine Dubourdieu   +5 more
doaj   +1 more source

The Role of Surface in Hydride Formation Processes

East European Journal of Physics, 2023
Several LaNi5-based hydrogen storage alloys were studied using secondary ion mass spectrometry (SIMS) technique. Ar+ ions with the energy of 10 - 18 keV were used as primary ions.
Viktor O. Litvinov, Ivan I. Okseniuk, Dmytro I. Shevchenko, Valentyn V. Bobkov   +3 more
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Double Group Transfer Reactions of an Unsaturated Tantalum Methylidene Complex with Pyridine N-Oxides

, 2016
The electrophilic nature of the benzamidinate tantalum methylidene complex [TolC(NSiMe3)2]2Ta(CH2)CH3 (1) allows for reactivity with pyridine N-oxides, which leads to the formation of the tantalum oxo complex [TolC(NSiMe3)2]2Ta(O)CH3 (5) and ...
Robert G. Bergman (1323120), Sarah M. Mullins (2964627), John Arnold (1346964)   +2 more
core   +1 more source

Intermediate-valence–driven magnetic complexity in Sm2MnCeO6+δ (SMCO) double perovskite: Coupled structural stability, Griffiths phase dynamics, and multifunctional potential

Physics Open
Understanding how mixed-valence rare-earth ions mediate magnetic complexity in oxide perovskites is critical for advancing multifunctional materials for energy and spin-based technologies.
Buyisiwe Sondezi, Sibusiso Nqayi
doaj   +1 more source