Zobrazeno 1 - 10
of 181
pro vyhledávání: '"O. Farish"'
Publikováno v:
Power Engineering Journal. 16:297-304
Condition monitoring of power transformers is a significant issue for electrical utilities. Research has demonstrated the efficacy of employing ultra high frequency measurement of partial discharge in the monitoring of transformers. A condition monit
Publikováno v:
IEEE Transactions on Plasma Science. 30:1525-1531
The use of pulsed electric fields (PEF) for the inactivation of micro-organisms is currently of considerable interest as an alternative method to the conventional thermal methods of food pasteurization presently in widespread use. Many parameters of
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 8:953-958
Increasing the permittivity of the propagation medium inside a hollow tube lowers its cut-off frequency, allowing it to transmit a wider range of signal frequencies. This principle is applied to the design of dielectric windows that can be used to fa
Publikováno v:
Letters in Applied Microbiology. 31:110-114
The physical effects of high-intensity pulsed electric fields (PEF) on the inactivation of diarrhoeagenic Bacillus cereus cells suspended in 0.1% peptone water were examined by transmission electron microscopy (TEM). The levels of PEF-induced microbi
Inactivation of pathogenic and spoilage microorganisms in a test liquid using pulsed electric fields
Publikováno v:
IEEE Transactions on Plasma Science. 28:144-149
Experiments have been carried out to investigate the effect of pulsed electric fields (PEFs) on the inactivation of microbial populations suspended in liquids using nonflowing and continuous flowing test chambers. Electric fields of /spl sim/30 kV/cm
Publikováno v:
Letters in Applied Microbiology. 27:67-70
The effects of high intensity light emissions, produced by a novel pulsed power energization technique (PPET), on the survival of bacterial populations of verocytotoxigenic Escherichia coli (serotype 0157:H7) and Listeria monocytogenes (serotype 4b)
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 5:165-168
Regular monitoring of the paper insulation of electrical windings is necessary to ensure safe and reliable operation of oil-paper insulated electrical transformers. The degradation of the paper insulation due to thermal aging yields furanic derivativ
Publikováno v:
IEE Proceedings - Science, Measurement and Technology. 145:45-48
Furfuraldehyde (FFA) is produced in transformer oil by the thermal degradation of the paper insulation utilised in power transformers. Measuring the concentration of FFA gives a reliable indication as to the condition of the paper insulation. The aut
Autor:
O. Farish, Martin D. Judd
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 47:875-880
A system for measuring the sensitivity of electric field sensors at UHF using a novel gigahertz transverse electromagnetic (GTEM) cell is described. The system was developed to enable calibration of UHF couplers that are used to detect insulation def
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 5:892-895
Condition monitoring of the paper winding of power transformers involves the measurement of the concentration of 2-furaldehyde, also called furfuraldehyde (FFA) in the transformer oil. Measuring the concentration of FFA in the oil gives a reliable in