Results 171 to 180 of about 20,616 (293)

Dipolar relaxation of cold sodium atoms in a magnetic field

, 2002
A quantum mechanical close coupling theory of spin relaxation in the stretched hyperfine level of sodium is presented. We calculate the dipolar relaxation rate of magnetically trapped cold sodium atoms in the magnetic field. The influence of shape resonances and the anisotropy of the dipolar interaction on the collision dynamics are explored.
openaire   +2 more sources

Interaction With Surface Spins as a Contribution to Nuclear Magnetic Relaxation of Liquids Adsorbed in Mesoporous Materials

Magnetic Resonance in Chemistry, EarlyView.
Liquids at silica interfaces experience demixing as a consequence of their respective polarity. The distribution of liquids and their primary relaxation contributions are studied by surface modification with OD and radical moieties, respectively. ABSTRACT NMR relaxation of liquids in the presence of solid interfaces, such as silica gel or porous glass,
Carlos Mattea, Hannah Leptin, Moritz Schmidt, Siegfried Stapf   +3 more
wiley   +1 more source

A NMR-based study on the characteristics of nonnative hen and human lysozyme and their disease-related mutants

, 2012
Seit einigen Jahrzehnten ist Lysozym eines der am meisten erforschten Proteine in der Literatur und wird hauptsächlich als Modell Protein zur Aufklärung der Faltungs- und Entfaltungsprozesse genutzt.
Sziegat, Friederike
core  

A Modified Balanced Steady State Free Precession Sequence for Overhauser Magnetic Resonance Imaging

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Low‐ and ultralow‐field magnetic resonance imaging (ULF MRI) have inherently low signal‐to‐noise ratio (SNR) by design. Overhauser dynamic nuclear polarization (ODNP) stands out as an effective solution for continuous signal enhancement.
Kai Buckenmaier, Friedemann Bullinger, Georgiy Alekseevich Solomakha, Marcel Schneider, Jörn Engelmann, Philipp Pohlmann, Pavel Povolni, Laura Kuebler, André Ferreira Martins, Klaus Scheffler   +9 more
wiley   +1 more source

The continuing significance of chiral agrochemicals

Pest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.
In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley   +1 more source

A comprehensive monitoring of physico‐chemical properties of water by magnetization and impedance spectroscopy

River, EarlyView.
Abstract This study describes the effect of electromagnetic field (EMF) treatment on the chemical and electrical properties of tap water. It also contributes to a better understanding of the influence of this technique on the physicochemical properties of water exposed to different treatment times by an EMF generated by the Aqua 4D.
Abderrahmane Elmelouky, Hillary Musungu, Mohammad S. Islam, Ahmed M. Tawfeek, Mohammed Salah, George G. Njema, Joshua K. Kibet   +6 more
wiley   +1 more source

Formic Acid Stabilization on Supported Ionic Liquid Phases: Insights from Solid-State NMR Spectroscopy. [PDF]

Chemistry
Solid‐state NMR spectroscopy reveals insights into interactions between formic acid and molecularly‐modified silica surfaces. Our findings contribute to a mechanistic understanding of the stabilization of formic acid by ionic liquid structures, with significant implications for the formic acid production from CO2 hydrogenation and adaptive catalysis ...
Wu Y, Zhang Y, Leitner W, Bordet A, Wiegand T.   +4 more
europepmc   +2 more sources

Covalent Functionalization of NiFe Layered Double Hydroxides using Tris(Hydroxymethyl)Aminomethane

Small, EarlyView.
Covalent functionalization of NiFe layered double hydroxides with tris(hydroxymethyl)aminomethane enables controlled growth, enhanced structural order, and improved processability. Temporary TRIS anchoring promotes stable water‐based inks and binder‐free electrode fabrication, leading to enhanced oxygen evolution activity and long‐term stability under ...
Alvaro Seijas Da Silva, Federico Juarez‐Dominguez, Víctor Oestreicher, Martín Mizrahi, Diego Hunt, Bruno J. C. Vieira, Joao C. Waerenborgh, Valeria Ferrari, Gonzalo Abellán   +8 more
wiley   +1 more source

Subterahertz Spin Relaxation Dynamics of Boron-Vacancy Centers in Hexagonal Boron Nitride. [PDF]

Nano Lett
Solanki AB, Wu YC, Ather H, Adhikary P, Shankar A, Gallagher I, Gao X, Matthiessen O, Sychev D, Lagutchev A, Li T, Chen YP, Shalaev VM, Lawrie B, Upadhyaya P.   +14 more
europepmc   +1 more source

Extending Field Limits in Nanoscale Magnetic Imaging With Metamaterial‐Inspired Magnetic Flux Concentrators

Small, EarlyView.
Micrometer‐sized flower‐shaped metamaterial magnetic flux concentrators are fabricated directly around nano and micromagnetic samples, enabling local field enhancement. Integrated into magnetic sensitive photoemission electron microscopy, they extend the available magnetic field range by up to a factor of five.
Aleix Barrera, Emile Fourneau, Thomas Pirottin, Lourdes Marcano, Radu Abrudan, Rong Huang, Lluis Balcells, Iñaki Orue, Maria‐Luisa Fdez‐Gubieda, Danny Villanueva, Alicia G. Gubieda, Liao Chang, Benoît Vanderheyden, Richard J. Harrison, Alejandro Silhanek, Anna Palau, Sergio Valencia   +16 more
wiley   +1 more source