129 Result(s)
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Article
Yi-Kang **ng
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Article
Combustion tube studies of dust flame acceleration
A new pneumatic dispersion system for obtaining a good quality uniform dust suspension in a horizontal dust combustion tube was developed. The effect of three different dispersion techniques on self-sustained ...
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Some Theorems on the Rogers-Ramanujan Continued Fraction and Associated Theta Function Identities in Ramanujan's Lost Notebook
In his lost notebook, Ramanujan recorded several modular equations of degree 5 related to the Rogers-Ramanujan continued fraction R(q). We prove several of these identities and give factorizations of some of t...
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Prevalence of TT Virus and GBV-C Infections among Patients with Liver Diseases and the General Population in Shanghai, China
To determine the prevalence of TT virus (TTV) and GB virus C/hepatitis G virus (GBV-C) infections among patients with liver disease and the general population in Shanghai, China, we studied 90 patients with li...
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Conformational Coupling: The Moving Parts of an Ion Pump
The Na,K-ATPase carries out the coupled functions of ATP hydrolysis and cation transport. These functions are performed by two distinct regions of the protein. ATP binding and hydrolysis is mediated by the lar...
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Harmonic detection an AC excited generation system based on in-phase correlation filtering
The paper reports results of investigation on the harmonic detection technique of a complicated power supply system such as an AC excited generation system, which has a variable fundamental frequency and low o...
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Dynamic modelling and robust current control of wind-turbine driven DFIG during external AC voltage dip
Doubly-Fed Induction Generator (DFIG), with vector control applied, is widely used in Variable-Speed Constant-Frequency (VSCF) wind energy generation system and shows good performance in maximum wind energy ca...
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Numerical simulation on silane plasma chemistry in pulsed plasma process to prepare a-Si :H thin films
We numerically calculated the effects of pulse modulation (plasma-on and -off times) on the concentration changes of the chemical species (SiH4, SiHx, SiHx+ and polymerized negative ions) and also the growth rate...
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Enhanced control of DFIG-used back-to-back PWM VSC under unbalanced grid voltage conditions
This paper presents a unified positive-and negative-sequence dual-dq dynamic model of wind-turbine driven doublyfed induction generator (DFIG) under unbalanced grid voltage conditions. Strategies for enhanced con...
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The expression of CD66a and possible roles in colorectal adenoma and adenocarcinoma
The aim of our study was to analyze the expression and possible role of CD66a in colorectal adenoma and adenocarcinoma and the relationship between its expression and pre-operation serum carcinoembryonic antig...
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Multi-frequency proportional-resonant (MFPR) current controller for PWM VSC under unbalanced supply conditions
This letter presents a multi-frequency proportional-resonant (MFPR) current controller developed for PWM voltage source converter (VSC) under the unbalanced supply voltage conditions. The delta operator is use...
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Study on inverter fault-tolerant operation of PMSM DTC
This paper presents an investigation of inverter fault-tolerant operation for a permanent magnet synchronous motor (PMSM) direct torque control (DTC) system under various inverter faults. The performance of a ...
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Adaptive rotor current control for wind-turbine driven DFIG using resonant controllers in a rotor rotating reference frame
This paper proposes an adaptive rotor current controller for doubly-fed induction generator (DFIG), which consists of a proportional (P) controller and two harmonic resonant (R) controllers implemented in the ...
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Article
Effects of Temperature on Benzene Oxidation in Dielectric Barrier Discharges
Effects of gas temperature on the conversion of benzene and the selectivity of CO and CO2 are analyzed and compared in dielectric barrier discharges. Gas temperature is determined by the method of the optical emi...
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Open AccessExperience with adjuvant chemotherapy for pseudomyxoma peritonei secondary to mucinous adenocarcinoma of the appendix with oxaliplatin/fluorouracil/leucovorin (FOLFOX4)
Pseudomyxoma peritonei (PMP) is a rare condition characterized by mucinous tumors, disseminated intra-peritoneal implants, and mucinous ascites. So far its diagnosis remains challenging to most clinicians.
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Dynamic modeling and direct power control of wind turbine driven DFIG under unbalanced network voltage conditions
This paper proposes an analysis and a direct power control (DPC) design of a wind turbine driven doubly-fed induction generator (DFIG) under unbalanced network voltage conditions. A DFIG model described in the...
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Article
A new xanthone from the roots of Securidaca inappendiculata
A new xanthone, 3-hydroxy-1,2,5,8-tetramethoxyxanthone, along with three known ones, 1,3,8-trihydroxy-2-methoxyxanthone, 1,3,8-trihydroxy-4-methoxyxanthone and 1,3,6-trihydroxy-2,7-dimethoxyxanthone, was isola...
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Open AccessCharacterization of membranous and cytoplasmic EGFR expression in human normal renal cortex and renal cell carcinoma
Metastatic renal cell carcinoma (RCC) is highly resistant to conventional systemic treatments, including chemotherapy, radiotherapy and hormonal therapies. Previous studies have shown over-expression of EGFR i...
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Proportional integral plus multi-frequency resonant current controller for grid-connected voltage source converter under imbalanced and distorted supply voltage conditions
This paper proposes a current control scheme for a grid-connected pulse width modulator (PWM) voltage source converter (GC-VSC) under imbalanced and distorted supply voltage conditions. The control scheme is i...
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Decontamination of VX Surrogate Malathion by Atmospheric Pressure Radio-frequency Plasma Jet
Decontamination of the VX surrogate (malathion) by the atmospheric pressure radio-frequency plasma jet (APPJ) was investigated. Optical emission spectroscopy was used to identify the active species and measure...
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Rapid Determination of Volatile Compounds in Gymnotheca involucrata Pei. by MAE–HS-SPME Followed by GC–MS
Microwave-assisted extraction (MAE) and headspace solid-phase microextraction (HS-SPME) followed by gas chromatography–mass spectrometry (GC–MS) was developed for the rapid determination of the volatile chemic...
