نتایج جستجو برای: loss of excitation
تعداد نتایج: 21192133 فیلتر نتایج به سال:
Rubber engine mounts are commonly used to provide vibration attenuation. The loss factor and dynamic stiffness of engine mount provide fundamental information of the energy dissipation. The objectives of this work are to study the frequency-dependant stiffness and loss factor of engine rubber mount and to determine the effect of the orientation angle of the engine mount on the dynamic character...
this article is concerned with the question of how much the assured will be entitled to recover following an assured loss. it will be discussed which three elements are involved in this respect; first the loss of assured, second the amount of assuror obligation and third the contractual agreements of the parties in respect of the amount of assuror's payment.it should be noted that franchis...
Permanent magnet synchronous generators (PMSGs) are novel generators which can be used in high-performance wind farms. High efficiency and flexibility in producing electricity from variable rotation make them good candidate for wind power applications. Furthermore, because these kinds of generators have no excitation winding, there is no copper loss on rotor; hence, they can operate at high pow...
front end یک رادار باند (f=9.4ghz)x به صورت (microwave integrated circuits)mic طراحی، ساخته و اندازه گیری شد . تقویت کننده کم نویز مدار یک تقویت کننده بالانس می باشد که ترانزیستورهای آن gaasmesfet به صورت چپ می باشند. بهره تقویت کننده در فرکانس 9.4ghz برابر 13db و عدد نویز آن 3db اندازه گیری می باشد . میکسر مدار، یک میکسر دیودی به صورت تک بالانس بوده و هایبرید 180 درجه آن از نوع حلقه (ratrace) ...
Numerical simulation of structural response is a challenging issue in earthquake engineering and there has been remarkable progress in this area in the last decade. Endurance Time (ET) method is a new response history based analysis procedure for seismic assessment and structural design in which structures are subjected to a gradually intensifying dynamic excitation and their seismic performanc...
age and tooth loss are expected to have a complex relationship with oral health-related quality of life. so the purpose of this study was to explain the impact of age and tooth loss on oral health-related quality of life using the short form 14-item oral health impact profile (ohip-14) among two population samples of gujarat and rajasthan.a cross-sectional questionnaire-based survey was conduct...
objective(s): variation in microsatellite sequences that are dispersed in the genome has been linked to a deficiency in cellular mismatch repair system and defects in several genes of this system are involved in carcinogenesis. our aim in this study was to illustrate microsatellite dna alteration in esophageal cancer. materials and methods: dna was extracted from formalin fixed paraffin embedde...
the suppression of the regenerative chatter phenomenon in turning process via the variation of the frequency and amplitude of the spindle motor excitation is carried out in this research. a programmable inverter is employed for variable periodic excitation of the spindle motor. a set of turning experiments is designed and performed on a number of conical work pieces both in constant spindle spe...
We carried out a combined study of UV-VUV luminescence and resonant x-ray emission from BeO single crystals with incident photon energies in the vicinity of the Be 1s absorption edge. The x-ray emission spectra show that at the Be 1s photoabsorption edge the lattice relaxation processes in the excitation site take place already on the timescale of the radiative decay of the core excitation. Com...
We demonstrate that the spin Hall effect in a thin film with strong spin-orbit scattering can excite magnetic precession in an adjacent ferromagnetic film. The flow of alternating current through a Pt/NiFe bilayer generates an oscillating transverse spin current in the Pt, and the resultant transfer of spin angular momentum to the NiFe induces ferromagnetic resonance dynamics. The Oersted field...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید