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Vladimir Bordo and Thomas Ebel
The electrostatic field in a nanocomposite represented by spherical nanoparticles (NPs) embedded into a dielectric between two parallel metallic electrodes is derived from first principles. The NPs are modeled by point dipoles which possess the polarizab...
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Zhaoliang Xing, Chong Zhang, Mengyao Han, Ziwei Gao, Qingzhou Wu and Daomin Min
The development of direct current high-voltage power cables requires insulating materials having excellent electrically insulation properties. Experiments show that appropriate nanodoping can improve the breakdown strength of polyethylene (PE) nanocompos...
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Ruijin Liao, Fuzhou Zhang, Yuan Yuan, Lijun Yang, Tuan Liu and Chao Tang
SiO2 hollow spheres and low relative permittivity insulation paper handsheets composed of these SiO2 hollow spheres with different weight percentages were successfully prepared. Low-content SiO2 hollow spheres were unifor...
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Hervê Stangler Irion, Eder Carlos Ferreira de Souza, André Vitor Chaves de Andrade, Sandra Regina Masetto Antunes, Augusto Celso Antunes
Pág. 237 - 244
The influence of the dopant Pr6O11 was investigated with regard to the electrical and microstructural properties of the system (98.95-x)%SnO2.1.0%CoO.0.05%Ta2O5.x%Pr6O11, where x = 0.05%, 0.10%, 0.30% and 0.50% in mol. Pr6O11 doping modifies the electric...
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Bin Du, Yu Shi and Qian Liu
Insulating oil modified by nanoparticle (often called nanofluids) has recently drawn considerable attention, especially concerning the improvement of electrical breakdown and thermal conductivity of the nanofluids. However, traditional insulating nanoflu...
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Tzu-Ken Lin, Dong-Sing Wuu, Shih-Yung Huang and Wei-Kai Wang
This study investigates the microstructure, mechanical and electrical properties of dense yttrium oxyfluoride (YOF) coatings fabricated by the atmospheric plasma spraying technique. Transmission electron microscopy and X-ray diffraction analysis revealed...
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Sittichai Wangwiwattana and Koike Yoshikazu
Electrical fires are usually caused by contact heating, for which the mechanism of heat accumulation is currently not well understood. Previous studies done by many researchers were able to recognize the pattern of the electrical waveform, but the actual...
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Jee-Hun Jeong, Ogyun Seok and Ho-Jun Lee
A new analytical model to analyze and optimize the electrical characteristics of 4H-SiC trench-gate metal-oxide-semiconductor field-effect transistors (TMOSFETs) with a grounded bottom protection p-well (BPW) was proposed. The optimal BPW doping concentr...
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Karthik Radha, Sree Renga Raja Thangaswamy
Pág. 255 - 262
In order to maintain continuous power supply in the electrical system, condition monitoring of the sensitivity equipments in power system is very essential. Among those equipment in which more concentration required is Power transformer. To determine the...
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Alexios Lekidis, Angelos Georgakis, Christos Dalamagkas and Elpiniki I. Papageorgiou
The scheduled maintenance of industrial equipment is usually performed with a low frequency, as it usually leads to unpredicted downtime in business operations. Nevertheless, this confers a risk of failure in individual modules of the equipment, which ma...
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Sana Jebali, Mahdi Meftah, Chadha Mejri, Abdesslem Ben Haj Amara and Walid Oueslati
The photocatalytic degradation process and absorption kinetics of the aqueous solution of the Cibacron Brilliant Yellow 3G-P dye (Y) were investigated under UV-Vis light. Pure barium titanate BaTiO3 (BT) and cobalt ion-substituted barium Ba1-xCoxTiO3 (x ...
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Nor Izzati Ahmad, Zaipatimah Ali, Mohd Zainal Abidin Ab. Kadir, Miszaina Osman, Nur Hazirah Zaini and Muhammad Hakirin Roslan
With increased electrical energy demands projected in the future, the development of a hybrid solar photovoltaic (PV)?battery energy storage system is considered a good option. However, since such systems are normally installed outdoors and in open areas...
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Qingguo Chen, Jinfeng Zhang, Minghe Chi and Chong Guo
An AC-DC combined voltage is applied to the oil-pressboard insulation near the valve side during the operation of a converter transformer. To study the breakdown characteristics of an oil-pressboard insulation under such voltages, a typical plate electro...
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Igor Nevliudov, Valeriy Gurin, Dmytro Gurin
Pág. 57 - 61
The subject of the study is oxide-semiconductor capacitors, which are widely used in the manufacture of electronic equipment. The goal of the study is to determine the main causes of failures of oxide-semiconductor capacitors at the production and operat...
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Luis Javier Fernández-Menéndez, Ana Silvia González, Víctor Vega and Víctor Manuel De la Prida
In this work, the entire manufacturing process of electrostatic supercapacitors using the atomic layer deposition (ALD) technique combined with the employment of nanoporous anodic alumina templates as starting substrates is reported. The structure of a u...
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L. Gurovich, J. Stern
Pág. 35 - 42
Variabilidad espacial de la velocidad de infiltración del agua en el suelo. I. Generación de datosCiencia e Investigación Agraria, Revista latinoamericana en Ciencias de la Agricultura, está indexada en las siguientes bases de datos: Thomson ISI, Alerta ...
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