Results 171 to 180 of about 7,856 (197)
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The THD Characteristics of the Phase detector
IEEE Transactions on Consumer Electronics, 1986The paper presents an evaluation of the THD characteristics of the synmetrical and simple phase detectors, using exponential models of the detectors. By developing the output expressions into a series with Bessel-function coefficients, it is shown that, under certain conditions, the convergence is obtained.
Zorana Popovic, Aleksander Markovic
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Polyhedron, 1994
Abstract The reaction between the barium derivative resulting from barium chips and 1-dimethylamino-2-propanol and 2,2,6,6-tetramethyl-3,5-heptanedione (thdH) in a 1 : 1 stoichiometry produced the β-diketonatoalkoxide derivative 2 or [Ba(thd)2(OHCH MeCH2NMe2)]2 3, depending on the solvent, THF or hexane.
L.G. Hubert-Pfalzgraf +3 more
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Abstract The reaction between the barium derivative resulting from barium chips and 1-dimethylamino-2-propanol and 2,2,6,6-tetramethyl-3,5-heptanedione (thdH) in a 1 : 1 stoichiometry produced the β-diketonatoalkoxide derivative 2 or [Ba(thd)2(OHCH MeCH2NMe2)]2 3, depending on the solvent, THF or hexane.
L.G. Hubert-Pfalzgraf +3 more
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Islanding detection of wind farms by THD
2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies, 2008One of the most main protection requirements of grid connected wind turbines (WTs) is islanding detection and anti-islanding protection. In this paper, a new method for islanding detection of WTs based on THD of asynchronous generator currents is proposed. The new features of the proposed method are its application for wind farms with a large number of
H. Kazemi Karegar, A. Shataee
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The evolving role of THD in hemorrhoids
Seminars in Colon and Rectal Surgery, 2019Abstract THD® Doppler procedure is commonly utilized to manage hemorrhoidal disease. It has contributed to significant change in the therapeutic approach to this condition. Its purpose is to reduce the arterial overflow to the hemorrhoids by Doppler-guided dearterialization and reduction of hemorrhoidal prolapse by mucopexy.
Ratto C. +6 more
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Transanal Hemorrhoidal Dearterialization (THD)
2015Hemorrhoids remain a highly prevalent anal disorder, affecting both genders over a wide age spectrum. Around half of these patients will experience symptoms to various degrees, most commonly presenting with per rectal bleeding, prolapse, or anal pain. Hemorrhoids originating above the dentate line are known as internal and those below the dentate line ...
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An Approximate THD Theory for Journal Bearings
Journal of Tribology, 1990The aim of this paper is to make available to the industrial designer results of the thermohydrodynamic theory of journal bearings, by providing a simplified, yet accurate model of journal bearing lubrication that can be implemented on a personal computer and be used in an interactive mode.
G. Gupta, C. R. Hammond, A. Z. Szeri
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THD analysis of matrix converter fed load
2009 International Conference on Power Electronics and Drive Systems (PEDS), 2009Invention of direct transfer of Power conversion is convenient method to eliminate DC link filter. Most of the Speed control method of AC drive has DC link filter which play an important role in rectifier fed inverter system. In this paper we presented detailed review of latest control method and different control strategy of direct AC to AC conversion
N. Mahendran, G. Gurusamy
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Defect studies on nonstoichiometric TiN by THDS
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1991We have performed defect studies on Ti1N1.07 by means of thermal helium desorption spectrometry (THDS), a technique which uses helium as an inert atomic probe. First, the defects in the solid are decorated with helium by ion implantation. The helium is subsequently released as the sample is heated.
Wilbert H.B. Hoondert +3 more
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Polyhedron, 1992
Abstract The reaction of barium metal with Hthd in dry pentane results in the tetranuclear complex Ba4(thd)8 (I), which can be sublimed in vacuo. Using Hthd, containing a small amount of pivalic acid, the pentanuclear chelate Ba5(thd)9(piv) (II) was isolated.
A.A. Drozdov, S.I. Trojanov
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Abstract The reaction of barium metal with Hthd in dry pentane results in the tetranuclear complex Ba4(thd)8 (I), which can be sublimed in vacuo. Using Hthd, containing a small amount of pivalic acid, the pentanuclear chelate Ba5(thd)9(piv) (II) was isolated.
A.A. Drozdov, S.I. Trojanov
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Reducing THD in an audio test instrument
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings, 2012A patented instrument has been developed for measuring SNR, SINAD, and THD for DACs and ADCs. For DACs, a synthesized source bucks the sine-wave source being measured. For ADCs, the sine-wave source is the input to the ADC under test. The quality of the THD measurement is limited by the harmonics generated by the source (less than −120dB).
Solomon Max, Richard Liggiero
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