Results 91 to 100 of about 5,292 (193)

Application of a power electronic switch in a vacuum installation [PDF]

Serbian Journal of Electrical Engineering
This article proposes an original method of implementing a power electronic semiconductor switch using a technological process based on metal processing in a vacuum furnace.
Ivanov Ruslan, Antchev Hristo, Mintchev Mintcho, Antchev Mihail   +3 more
doaj   +1 more source

Results of experimental research of the modes of short circuit in a traction network

Nauka ta progres transportu, 2012
In the article the results, namely oscillograms of the transitional feeder electric values obtained by the experimental tests of the short circuit modes in case of setting off different types of substation fast-acting switches are presented.
P.Ye. Mykhalichenko
doaj  

Cutter-Oscillator With Single-Degree-Of-Freedom For The Study Of Cutting Vibrations

Journal of Mechanical Engineering
The work includes theoretical analysis of the design of a single-degree-of-freedom cutter-oscillator. An improved design, allowing for the adjustment of mass and overhang length, is proposed.
Vnukov Yuriy, Tryshyn Pavlo, Kozlova Olena, Dyadya Serhiy   +3 more
doaj   +1 more source

De l’usage des courbes sonores et autres supports graphiques pour aider l’apprenant en langues.

ALSIC: Apprentissage des Langues et Systèmes d'Information et de Communication, 2000
Language software programs often use waveforms to reinforce their credibility as well as to try and help learners to make a link between their oral production and the examples they are asked to imitate, even though they often do not know how to start ...
Alain Cazade
doaj   +1 more source

Calling songs of certain orthopteran species (Insecta, Orthoptera) in southern Portugal [PDF]

Animal Biodiversity and Conservation, 2001
The calling songs produced by males of the Orthoptera occurring at the field station “Herdade da Ribeira Abaixo” (Centre for Environmental Biology), in Grândola (southern Portugal), are described.
Oliveira, P. A. P., Simoes, P. C., Quartau, J. A.   +2 more
doaj  

Study of casing treatment stall margin improvement phenomena [PDF]

The results of a program of experimental and analytical research in casing treatments over axial compressor rotor blade tips are presented. Circumferential groove, axial-skewed slot, and blade angle slot treatments were tested.
Hilvers, D. E., Prince, D. C., Jr., Wisler, D. C.   +2 more
core   +1 more source

Oscillograms and their tests [PDF]

Journal of the American Institute of Electrical Engineers, 1920
A. E. Kennelly, R. N. Hunter, A. A. Prior   +2 more
openaire   +1 more source

Machine Learning Analysis of Arterial Oscillograms for Depression Level Diagnosis in Cardiovascular Health

Complex Systems Informatics and Modeling Quarterly
The presented study explores the clustering of arterial oscillogram (AO) data among a sample of patients, focusing on ultra-low-frequency (ULF) indicators and their relationship with depression levels.
Vladislav Kaverinsky, Dmytro Vakulenko, Liudmyla Vakulenko, Kyrylo Malakhov   +3 more
doaj   +1 more source

Spark Ignition of Flowing Gases. 2: Effect of Electrode Parameters on Energy Required to Ignite a Propane-Air Mixture [PDF]

Research was conducted to determine the effect of the electrode parameters of spacing, configuration, and material' on the energy required for ignition of a flowing propane-air mixture.
Swett, Clyde. C., Jr.
core   +1 more source

Study of operating modes of the AION tanker electrical power system

Известия высших учебных заведений: Проблемы энергетики
THE PURPOSE. Consider the issue of automation of modern sea vessels with a high degree of electrification. The purpose of the study is to analyze the electrical power system of the AION tanker to determine the possible occurrence of abnormal phenomena ...
A. E. Savenko, I. V. Gabriel
doaj   +1 more source