نتایج جستجو برای: q factor measurement
تعداد نتایج: 1355681 فیلتر نتایج به سال:
From the title, one might assume that issues raised in this article must have been settled long ago. In a sense this is true. This may be one of those cases of failed communication between mathematicians and physicists, experimental physicists in particular. In the Introduction we show that a common approach to this linear, single-parameter estimation problem converges to the minimum variance, ...
Objective(s): The aim of the present study was to evaluate the effect of Quercus brantii galls extract on the rat skin burn wound healing. Materials and Methods: Ethanol extract of the galls of Q. brantii was used to treat the induced burn wounds on the back of 32 Wistar rats divided into 4 groups. The groups were treated by placebo, 1%, 2% and 4% concentration gall extract gels for 14 days and...
We present an update to experiment E91{004, a measurement of parity violating elastic electron scattering from He at the location of the rst maximum of the He charge form factor. E91{004 was approved in 1993 with an \A" rating for 85 days of beam. The experiment will use a beam energy of 3.3 GeV, a 20 cm long high pressure helium target, and the two Hall A spectrometers at 13.5 and 3.2 GeV/c to...
We present an update to experiment E91{004, a measurement of parity violating elastic electron scattering from He at the location of the rst maximum of the He charge form factor. E91{004 was approved in 1993 with an \A" rating for 85 days of beam. The experiment will use a beam energy of 3.3 GeV, a 20 cm long high pressure helium target, and the two Hall A spectrometers at 13.5 and 3.2 GeV/c to...
OBJECTIVES This study sought to validate a new method for direct volumetric blood flow measurement in coronary arteries in animals and in conscious humans during cardiac catheterization. BACKGROUND Direct volumetric measurement of blood flow in selective coronary arteries would be useful for studying the coronary circulation. METHODS Based on the principle of thermodilution with continuous ...
Achieving high-Q-factor resonances allows dramatic enhancement of performance of many plasmonic devices. However, the excitation of high-Q-factor resonance, especially multiple high-Q-factor resonances, has been a big challenge in traditional metamaterials due to the ohmic and radiation losses. Here, we experimentally demonstrate simultaneous excitation of double extremely sharp resonances in a...
This paper describes some of the more unusual phenomena associated with RF/microwave measurements that have been investigated by the author over the past twelve years. It has been found that, from some high profile publications, microwave measurements have been either performed in error or their results wrongly interpreted. Four categories have been identified and two examples from each are dis...
the error of inertial navigation systems increase versus time, therefore for achieving higher accuracy specially in long time navigations we have to use an aiding system. global positioning system is the best aiding system in this case. in this paper we first simulate a gps and ins; then simulate tightly integration and finally review adaptation method of kalman filtering a fuzzy adaptive kalma...
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