The Experts below are selected from a list of 228 Experts worldwide ranked by ideXlab platform

Ting Xu - One of the best experts on this subject based on the ideXlab platform.

Jiaxing Wang - One of the best experts on this subject based on the ideXlab platform.

T.-w. Dominic Chan - One of the best experts on this subject based on the ideXlab platform.

  • Performance Enhancements in Differential Ion Mobility Spectrometry-Mass Spectrometry (DMS-MS) by Using a Modified CaptiveSpray Source
    Journal of The American Society for Mass Spectrometry, 2018
    Co-Authors: Ri Wu, Wei-jing Wu, Y.-l. Elaine Wong, Y.-l. Winnie Hung, H.t. Wong, Xiangfeng Chen, Ze Wang, T.-w. Dominic Chan
    Abstract:

    Differential ion mobility spectrometry (DMS) spatially separates ions in the gas phase using the mobility differences of the ions under applied low and high electric fields. The use of DMS as an ion filter (or ion selector) prior to mass spectrometry analysis has been compromised by the limited ion transmission efficiency. This paper reports enhancement of the DMS-MS sensitivity and signal stability using a modified CaptiveSpray™ source. In terms of the ion sampling and transmission efficiency, the modified CaptiveSpray source swept ~ 89% of the ions generated by the tapered capillary through the DMS Device (compared to ~ 10% with a conventional microspray source). The signal fluctuation improved from 11.7% (relative standard deviation, RSD) with microspray DMS-MS to 3.6% using CaptiveSpray-DMS-MS. Coupling of LC to DMS-MS via the modified CaptiveSpray source was simple and robust. Using DMS as a noise-Filtering Device, LC-DMS-MS performed better than conventional LC-MS for analyzing a BSA digest standard. Although LC-DMS-MS had a lower sequence coverage (55%), a higher Mascot score (283) was obtained compared to those of LC-MS (sequence coverage 65%; Mascot score 192) under the same elution conditions. The improvement in the confidence of the search result was attributed to the preferential elimination of noise ions. Graphical Abstract ᅟ

Yang Jian-ning - One of the best experts on this subject based on the ideXlab platform.

Liu Zhenxing - One of the best experts on this subject based on the ideXlab platform.

  • Hybrid reactive power compensation and Filtering Device based on dual tuning filter and TSC
    Electric power automation equipment, 2020
    Co-Authors: Liu Zhenxing
    Abstract:

    A control technology of dual tuning filter based on controllable reactor is put forward,which regulates the AC inductance of controllable reactor to adjust the filter from detuning state to resonant state for effective Filtering out the harmonic components of system.A hybrid dynamic reactive power compensation and filter Device is designed,which adopts the TSC(Thyristor Switched Capacitor) to quickly trace the reactive power needed by the compensation system and the proposed control technology to avoid the detuning of traditional dual tuning filter cased by system frequency deviation,component parameter drift,system impedance change,etc,and the deficiency that required reactive power of load can't be dynamic tracked.A simulation model is established on MATLAB/Simulink platform and the simulative results demonstrate the feasibility and superiority of the designed Device.