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This paper presents a new group of features used for partial discharge (PD) pattern recognition, based on the description of detail and statistical characteristics of PD images by using fractal features and statistical parameters, respectively. An improved differential box-counting method is proposed for fractal dimension estimation of PD images. The new group of features is used as the input parameters...
Mineral oil is poorly biodegradable and has a low flash point. It does not satisfy the requirement of environmental sustainability and fireproofing. Whereas vegetable oil-based dielectric liquid is fully biodegradable and has a higher flash point and relative permittivity. This paper presents a type of insulating oil refined from a transgenic rapeseed oil. The oil-refining procedure is introduced...
Many current implantable devices require large capacity batteries implanted in the body. In this paper we present a new approach of transcutaneous battery recharging by volume conduction and its circuit model. We also analyze the current transmitting efficiency and rechargeable prerequisite of transcutaneous battery recharging by applying this circuit model. The experiments prove the legitimacy of...
This paper describes the long-term research work that is being conducted at the Key Laboratory of High Voltage and Electrical New Technology of the Ministry of Education in Chongqing University, China, to address the technical problems arising from the West-to-East Power Transmission Project concerning the outdoor insulation in complex climate environment. The research included a theoretical investigation...
In order to account for the influence of subcellular organelles on transmembrane potential, five-shelled dielectric model of spherical cell was developed in this paper. And the calculation method of transmembrane potential induced by any pulsed electric field (PEF) was put forward. Thus the effects of different pulse duration on transmembrane potentials of cell membrane and nuclear membrane were also...
This paper discussed the lethal effects of steep pulsed electric field (SPEF) to target lymphatic capillaries in VX2 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 the edge of tumor treated with SPEF was indistinct,...
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 group (22), and then four experiments were carried...
The vascular effect and immunity effect of SPEF on Wistar mice were studied, and the possible treatment mechanisms and clinical trial methods of SPEF were discussed. We tested lymphocyte proliferation ratio and activity of NK cell, and the contents of IFN-/spl alpha/ and IL-4 in the serum lymphocyte were inspected with ELISA method. Moreover, macrophage were collected, the content of TNF-/spl alpha/...
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