Results 1 to 10 of about 120,796 (261)
ON THE POST-LINEAR QUADRUPOLE-QUADRUPOLE METRIC
Revista de Matemática: Teoría y Aplicaciones, 2017 The Hartle-Thorne metric defines a reliable spacetime for most astrophysical purposes, for instance simulations of slowly rotating stars. Solving the Einstein field equations, we added terms of second order in the quadrupole moment to its post-linear ...
FRANCISCO FRUTOS ALFARO, MICHAEL SOFFEL
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Quasiperiodic quadrupole insulators
SciPost PhysicsHigher-order topological insulators are an intriguing new family of topological states that host lower-dimensional boundary states. Concurrently, quasiperiodic systems have garnered significant interest due to their complex localization and topological ...
Raul Liquito, Miguel Gonçalves, Eduardo V. Castro
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Design of Portable Quadrupole Mass Spectrometry Control System Based on FPGA [PDF]
Zhipu Xuebao, 2023 To meet the requirements of miniaturization and low power consumption of portable instruments, a set of lower computer control system of portable quadrupole mass spectrometry was designed.
GE Wei-min +5 more
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Determination of Vancomycin in Serum by Quadrupole-Linear Ion Trap Tandem Mass Spectrometry [PDF]
Zhipu Xuebao, 2023 The demand for accurate mass spectrometry measurement in the field of clinical diagnosis is increasing. In the face of foreign monopoly, our team has developed new technologies and new methods for the selective enrichment of trace targets in complex ...
XIE Jie1;LI Zi-ying1,2;QU Zi-yu1;YI Ke-ke1;LIU Hao3;LI Jia-lian1;ZHANG Di1;HUANG Ze-jian1;WANG Han-wen3;SHI Zheng-yuan4;YAN Dan4;YU Xiao-ping2;JIANG You1;DAI Xin-hua1;FANG Xiang1
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Crystals, 2023 Manipulating radiation patterns is challenging, especially at low frequencies. In this paper, we demonstrate that acoustic metamaterials arranged as an array of quadrupoles remarkably improve the directionality of acoustic radiation at low frequencies ...
Qinglei Zeng +3 more
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Development of Type A Quadrupole Magnet for Siam Photon Source II
Particles, 2023 A prototype of a type A quadrupole magnet has been designed and manufactured for the 3 GeV storage ring of Siam Photon Source II, the second synchrotron light source in Thailand. The required quadrupole gradient is 51 T/m with the magnet effective length
Supachai Prawanta +8 more
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Nanomaterials, 2021 Simple systems in which strong coupling of different excitations can be easily realized are highly important, not only for fundamental research but also for practical applications.
Huajian Pang +5 more
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Towards Higher Sensitivity of Mass Spectrometry: A Perspective From the Mass Analyzers
Frontiers in Chemistry, 2021 Mass spectrometry (MS) is one of the most widely used analytical techniques in many fields. Recent developments in chemical and biological researches have drawn much attention to the measurement of substances with low abundances in samples.
Chang Li +8 more
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Determination of 25OHD in Serum Based on Quadrupole-Linear Ion Trap Tandem Mass Spectrometric Technique [PDF]
Zhipu Xuebao, 2023 Vitamin D deficiency and insufficiency is a global health issue that afflicts people of different age groups all over the world. As a reliable indicator for the evaluation of vitamin D, 25OHD is usually determined by LC-MS/MS.
XIE Jie +11 more
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Discussion on Design Ideas of Quadrupole Field of Mass Spectrometry [PDF]
Zhipu Xuebao, 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
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