Results 71 to 80 of about 120,508 (261)

Quadrupole interaction of non-diffracting beams with two-level atoms

Results in Physics, 2019
Recently it has been shown that the quadrupole interactions can be improved significantly as the atom interacts at near resonance with the Laguerre-Gaussian (LG) mode.
Saud Al-Awfi, Smail Bougouffa
doaj   +1 more source

High‐Power Rapid Laser‐Induced Synthesis of Multi‐functional Cobalt Metal‐Organic Framework With an Unprecedented Synthesis Efficiency

Advanced Materials Technologies, EarlyView.
Laser‐assisted synthesis enables rapid (within 1 h) and high‐yield (≥90%) production of Co‐MOFs with mesoporous structures, tunable magnetic and optical properties, and efficient adsorption of N2, CH4, and CO2 for low‐energy gas separation. DFT calculations elucidate the electronic structure and adsorption behavior.
Saliha Mutlu, Bülend Ortaç, Ali Karatutlu, Taylan Gorkan, Engin Durgun, Dilek Soyler, Saniye Soylemez, Jelena Lillepäg, Volkan Filiz, Nergis Arsu, Sevil Savaskan Yilmaz   +10 more
wiley   +1 more source

Exact cancellation of emittance growth due to coupled transverse dynamics in solenoids and rf couplers

Physical Review Accelerators and Beams, 2018
Weak, rotated magnetic and radio frequency quadrupole fields in electron guns and injectors can couple the beam’s horizontal with vertical motion, introduce correlations between otherwise orthogonal transverse momenta, and reduce the beam brightness ...
David H. Dowell, Feng Zhou, John Schmerge   +2 more
doaj   +1 more source

Study on Focusing High Current Electron Beams with Quadrupole Magnets in LIA

Yuanzineng kexue jishu, 2023
Aimed to obtain small-sized beam spots, the focusing characteristics of high current electron beams generated by linear induction accelerators (LIA) with the quadrupole magnets were studied in this paper. The main factors which influence the minimum beam
JING Xiaobing;WANG Yi;YANG Zhiyong;SHI Jinshui
doaj   +1 more source

Paternal Circadian Disruption Impairs Offspring Cognition via Sperm microRNAs

Advanced Science, EarlyView.
Paternal circadian disruption remodels the sperm small RNA payload, elevating miR‐92a‐3p/miR‐25‐3p levels and perturbing early embryonic gene regulatory programs. Microinjection experiments and single‐embryo transcriptomics reveal sex‐specific developmental vulnerabilities, ultimately impairing offspring hippocampal synaptic plasticity and cognition ...
Kexin Zou, Sisi Luo, Binliang Tang, Zhiqiang Liu, Yuchuan Zhou, Yicong Meng, Zhengmu Wu, Zheng Sun, Weihui Shi, Jianzhong Sheng, Chuanjin Yu, Zhenhua Li, Siyi Wei, Mo Zhang, Yujie Luo, Jing Yan, Xueyun Qin, Jiahang Mo, Chengliang Zhou, Jinsong Li, Hefeng Huang, Yifu Ding, Guolian Ding   +22 more
wiley   +1 more source

Research on Automatic Tuning of Quadurpole Mass Resolution in Quadurpole-Liner Ion Trap Tandem Mass Spectrometry

Zhipu Xuebao
In order to achieve quadrupole mass resolution and precision automatic tuning of a radial excitation mode quadrupole ion trap tandem mass spectrometer, a set of algorithms was developed that can freely set the target peak width at half maximum and ...
Xing-yu ZHAO, Mei-ying LIU, Lu ZHANG, Jie XIE, Zi-yu QU, Di ZHANG, You JIANG, Xiang FANG   +7 more
doaj   +1 more source

Kinetic energy in the collective quadrupole Hamiltonian from the experimental data

Physics Letters B, 2017
Dependence of the kinetic energy term of the collective nuclear Hamiltonian on collective momentum is considered. It is shown that the fourth order in collective momentum term of the collective quadrupole Hamiltonian generates a sizable effect on the ...
R.V. Jolos, E.A. Kolganova
doaj   +1 more source

Type-II quadrupole topological insulators

Physical Review Research, 2020
Modern theory of electric polarization is formulated by the Berry phase, which, when quantized, leads to topological phases of matter. Such a formulation has recently been extended to higher electric multipole moments, through the discovery of the so ...
Yan-Bin Yang, Kai Li, L.-M. Duan, Yong Xu   +3 more
doaj   +1 more source

Quadrupole magnets for the SSC

IEEE Transactions on Applied Superconductivity, 1993
The authors have designed, constructed, and tested four short (1-m) models and six full-size (5-m) models of the Superconducting Super Collider (SSC) main-ring 5-m focusing quadrupole magnet (211 T/m). The results of this program are summarized. The magnet construction, test procedures, and test results are discussed.
Lietzke, A., Barale, P., Benjegerdes, R., Caspi, S., Cortella, J., Dell'Orco, D., Gilbert, W., Green, M.I., Mirk, K., Peters, C., Scanlan, R., Taylor, C.E., Wandesforde, A.   +12 more
openaire   +3 more sources

RNA Helicase DDX21 Controls CD4+ T Cell Proliferation and Promotes Inflammatory Bowel Disease via Translational Control

Advanced Science, EarlyView.
ABSTRACT Inflammatory bowel disease (IBD) is characterized by dysregulated T cell responses. RNA helicases, including DExD‐box helicase 21 (DDX21), are pivotal in RNA metabolism, but their role in T cell‐mediated pathology during IBD remains unclear. Here, we demonstrate that DDX21 expression in CD4+ T cells correlates with cell cycle and translation ...
Yujuan Zhang, Chen Kan, Xinhui Yang, Yajuan Hao, Xuemin Cai, Mei Yang, Qianqian Zhang, Zhengting Wang, Ning Jiang, Lei Wang, Hua‐Bing Li, Jing Zhou   +11 more
wiley   +1 more source