Browsing by Title
Now showing items 32274-32293 of 92606
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(Universidad de Chile, 2016)Los fotomezcladores Verticalmente Iluminados (VI) de Onda Viajera (TW) de Portadores Unipolares (UTC) son fuentes continuas de radiación de THz. Este dispositivo usa la conversión heterodino para generar señales de onda ...
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(MDPI, 2017)Non-linear high-power devices produce electromagnetic noise (EMN) sources of great intensity that can disrupt and damage the surrounding electrical equipment and devices. This radiative phenomenon is very common at facilities ...
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(American Geophysical Union, 2018)The abundant reports on the existence of electromagnetic high-frequency fluctuations in space plasmas have increased the expectations that theoretical modeling may help understand their origins and implications (e.g., ...
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(American Geophysical Union, 2015)Observed electron velocity distributions in the Earth's magnetosphere and the solar wind exhibit a variety of nonthermal features which deviate from thermal equilibrium, for example, in the form of temperature anisotropies, ...
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(Blackwell Publishing Ltd, 1998)We study the stability of electromagnetic waves for nongyrotropic velocity distribution functions in a solar-wind-like plasma. The dispersion relation is solved numerically in closed form. On the basis of recently reported ...
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(1989)Electromagnetic ion cyclotron waves below the proton gyrofrequency in multicomponent plasmas have been extensively studied in recent years. However, it has recently been suggested that an often used analytical approach ...
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(1996)We study the stability of the cold-plasma dispersion relation for circularly polarized waves in a plasma composed of an ion background and an ion beam. The presence of the beam introduces a resonant branch into the dispersion ...
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(1998)It is well known that ion beam-plasma interactions can destabilize right- and left-hand polarized electromagnetic waves. However, these instabilities have been studied for frequencies less than the ion-beam gyrofrequency, ...
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(Universidad de Chile, Facultad de Ciencias Físicas y Matemáticas, 2012-01)
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(Informa Healthcare, 2013)Objective. The goal of this study was to evaluate the electromyographic (EMG) activity of the anterior temporalis, suprahyoid, infrahyoid and trapezius muscles during tooth grinding at different jaw posture tasks. Materials ...
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(Medicina oral S L, 2017)Background: A necessary step to use neuromuscular analysis as diagnostic tool is to establish normal reference values for the physiological range in a healthy population. Surface electromyographic (sEMG) activity of the ...
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(Oxford University Press, 2020)Background. Ankles and knees are commonly affected in people with hemophilia and thus are targets for prevention or rehabilitation. However, to our knowledge, no studies have evaluated muscle activity and safety during ...
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(Journal of Clinical Pediatric Dentistry, 2020)
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(Journal Pedodontics, 2020)Objective: This cross-sectional study evaluates the electromyographic (EMG) activity of lips and anterior temporalis muscles of children with competent or incompetent lips. Study design: Forty children were classified ...
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(2007)The purpose of this study was to compare the electromyographic (EMG) activity of the anterior temporal and suprahyoid muscles using habitual methods to determine the clinical rest position. The sample included 26 healthy ...
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(1989)Various correlation energy density functionals have been used to evaluate the electron affinities of the alkaline-earth atoms. A related approach based on polarization potentials was also tested. The results give evidence ...
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(1990)The negative ions of the alkaline-earth-metal atoms (Be to Ba) have been studied by means of a pseudopotential model together with configuration- interaction and multiconfiguration self-consistent-field techniques. Only ...
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Electron beam effects on amorphous molybdenum oxide nanostructures grown by condensation in hydrogen (2008)Molybdenum trioxide (MoO3) was evaporated from a tungsten resistive source in presence of hydrogen as carrier gas at pressures from 100 Pa to 600 Pa. Crystalline samples of molybdenum oxide were obtained at source temperatures ...
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(Springer, 2012)Electron beam-induced damage and structural changes in MoO3 and MoO3-x single crystalline nanostructures were revealed by in situ transmission electron microscopy (TEM) examination (at 200 kV) after few minutes of ...
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(AMER PHYSICAL SOC, 2010-09-23)The resistivity of metallic structures depends on both electron-grain boundary scattering and electron-surface scattering. By tuning the grain size, we have been able to separate the contribution to the resistivity ...
