Results 11 to 20 of about 101,301 (257)

Identification of Phenolic Compounds in Australian-Grown Bell Peppers by Liquid Chromatography Coupled with Electrospray Ionization-Quadrupole-Time-of-Flight-Mass Spectrometry and Estimation of Their Antioxidant Potential

, 2022
Identification of Phenolic Compounds in Australian-Grown Bell Peppers by Liquid Chromatography Coupled with Electrospray Ionization-Quadrupole-Time-of-Flight-Mass Spectrometry and Estimation of Their Antioxidant ...
H Wu (7724324), S Bawazeer (13327344), Z Leng (14173395), A Rauf (13312752), Z Liu (6098168), B Zhong (12202331), Hafiz Suleria (13096467)   +6 more
core   +3 more sources

Higher Order Parametric Excitation Modes for Spaceborne Quadrupole Mass Spectrometers [PDF]

, 2011
This paper describes a technique to significantly improve upon the mass peak shape and mass resolution of spaceborne quadrupole mass spectrometers (QMSs) through higher order auxiliary excitation of the quadrupole field.
Block, B. P., Gershman, D. J., D. J. Gershman, M. Rubin, T. H. Zurbuchen, P. R. Mahaffy, Mahaffy, P. R., Zurbuchen, T. H., Benna, M., M. Benna, Rubin, Martin, B. P. Block, Rubin, M.   +12 more
core   +1 more source

Discussion on Design Ideas of Quadrupole Field of Mass Spectrometry

, 2023
The mass analyzer based on quadrupole field theory, including quadrupole and ion trap, control and screen ions by a non-magnetic, alternating electric field, which was the first proposed by Professor Paul in 1953.
JIA Bin;YANG Mao-lin;LIU Ji-xing;ZHAO Gao-sheng;HUANG Yu-liang;CHENG Ping
core   +1 more source

Inverse-square-type potential from the interaction of the magnetic quadrupole moment of a neutral particle with a magnetic field

, 2021
We analyse the attractive inverse-square-type potential that arises from the interaction of the magnetic quadrupole moment of a neutral particle with the magnetic field. Then, we search for bound state solutions to the Schrödinger equation.
S. L. R. Vieira, K. Bakke
core   +1 more source

Water Dipole and Quadrupole Moment Contributions to the Ion Hydration Free Energy by the Deep Neural Network Trained with Ab Initio Molecular Dynamics Data

, 2020
We report a calculation scheme on water molecular dipole and quadrupole moments in the liquid phase through a Deep Neural Network (DNN) model. Employing the the Maximally Localized Wannier Functions (MLWF) for the valence electrons, we obtain the water ...
Thomas L., Beck, Carrie C., Doyle, YU, SHI   +2 more
core   +1 more source

Inclusion of the quadrupole moment when describing polarization. The effect of the dipole-quadrupole polarizability.

, 2008
A method to compute distributed dipole-quadrupole polarizabilities is suggested. The method is based on numerical differentiation of distributed quadrupole moments, using finite field perturbation calculations.
Holt, Asbjörn, Karlström, Gunnar
core   +2 more sources

Atom trapping and dynamics in the interaction of optical vortices with quadrupole-active transitions [PDF]

, 2020
Recent studies have confirmed the coupling of optical vortices, such as Laguerre-Gaussian and Bessel-Gaussian modes, to quadrupole-active atomic transitions.
Bougouffa, Smail, Babiker, Mohamed
core   +1 more source

Abinitio Calculation of the Deuterium Quadrupole Coupling in Liquid Water [PDF]

, 1992
The quadrupole coupling constant and asymmetry parameter for the deuteron in liquid heavy water was determined using purely theoretical methods. Molecular‐dynamics simulations with the ab initio potential‐energy surface of Lie and Clementi were used to ...
Gerber, S., Searles, D., Huber, H., Debra Searles, Stefan Gerber, Eggenberger, R., Hanspeter Huber, Rolf Eggenberger, Welker, M., Marc Welker   +9 more
core   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Distribution into the quadrupole mass filter with round rods. [PDF]

, 2011
Potential field distribution of a quadrupole mass filter with circular cross-section electrodes is described. At first, using superposition principle, we calculate potential around a round rod which is subjected to a given potential.
Kashanian, F., F. Kashanian, A.B. Mohd Rizam, Nouri, S., Chaharborj, S. Seddighi, Abu Bakar, Mohd Rizam, S. Seddighi Chaharborj, S. Nouri   +7 more
core   +1 more source