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A plate assay based on the formation of haloes on Petri dishes, containing the trypan blue dye and polysaccharides as substrates, provides a specific, reliable and rapid detection of corresponding polysaccharide degrading enzymes and their producing microorganisms. A blue complex was formed by mixing trypan blue and polysaccharides as substrates. It has(More)
This paper studies a regenerative cascaded multilevel converter that substitutes active front ends for the diode-based front ends only in part of cells, and proposes a power tracking control strategy that does not need any motor parameters. During the induction motor's deceleration, by controlling the two kinds of cells' output voltages according to the(More)
Exposing cancer cell to steep pulsed electric field (SPEF) with appropriate dosage, the cell may die due to irreversible electrical breakdown (IREB). 48 BALB/c mice inoculated with U/sub 14/ cervical cancer cell were treated with SPEF to study the lethal and inhibitory effects of SPEF on them. They were randomly divided into test group (26) and control(More)
High voltage pulse sterilization is a new type of non-thermal sterilization technology whose mechanism is that high intensity pulsed electric field can destroy the cell membrane of bacteria instantaneously, so as to induce bacterial death. Considering the harmfulness of biological slime or biofouling to the circulating cooling water system which is produced(More)
INTRODUCTION Dysregulation of CD4+ T cell subsets participates in the pathogenesis of immunoglobulin A nephropathy (IgAN). Vitamin D has immunomodulatory functions. This study aims to investigate the regulatory effect of vitamin D3 on T helper- regulatory T (Th17-Treg) cells balance in rats with IgAN. MATERIALS AND METHODS Sprague-Dawley rats were(More)
This paper discussed the lethal effects of steep pulsed electric field (SPEF) to target lymphatic capillaries in VX<sub>2</sub> implanted breast cancer of rabbits using methylene blue dye injection staining, 5'-AMP-ALPase enzyme histochemical double staining, electron microscopy and VEGF-C observations. The result of methylene blue dye perfusion showed that(More)
This paper chooses the proportional resonant controller for the controlling of Active Power Filter, and proposed a new control topology for dual parallel APF application. The APF_I near the load side employs the proportional resonant controller to compensate the 5<sup>th</sup>, 11<sup>th</sup>, 17<sup>th</sup> and 23<sup>rd</sup> harmonics; The APF_II near(More)
The repetitive control has been widely used in grid connected voltage source converters, such as uninterruptible power supplies (UPS), photovoltaic inverter (PV) and active power filter (APF). This paper introduces a new repetitive control strategy in the APF system; the proposed control strategy has a forgetting factor (FF), which could improve control(More)
The research of the energy source of online condition monitoring devices for transmission line is a current interest. An energy capture system using both current transformer (CT) and lithium batteries is proposed in this paper. Through this system, the CT with variable turns transmits energy of transmission lines to devices and lithium batteries. The latter(More)
Based on the experimental results, a simplified model for low-voltage powerline used as a high frequency communication channel is presented. With this model, the Orthogonal Frequency Division Multiplexing (OFDM) based high rate digital communication over low-voltage powerline is analyzed and simulated. The capability of the signal transmission system in(More)