Results 11 to 20 of about 114,645 (204)
Cerâmica, 2004 Discutiu-se a fotoluminescência para o tungstato de cálcio amorfo, observada à temperatura ambiente. Verificou-se que há concordância entre os resultados experimentais e teóricos.
F. R. C. Ciaco +9 more
doaj +1 more source
Photonic RF Down-Converter Based on Optomechanical Oscillation [PDF]
, 2008 We demonstrate all-optical radio-frequency (RF) down-conversion in a silica microtoroid optomechanical (OM) oscillator. Preliminary results show that the OM oscillator can simultaneously serve as mixer and local oscillator in a photonic homodyne RF ...
Hossein-Zadeh, Mani, Vahala, Kerry J.
core +2 more sources
Tools and Procedures for the CTA Array Calibration [PDF]
, 2017 The Cherenkov Telescope Array (CTA) is an international initiative to build the next generation ground-based very-high-energy gamma-ray observatory.
de los Reyes, Raquel +4 more
core +3 more sources
Acta Cirúrgica Brasileira, 2004 Purpose: To show that a non-laser light source can be constructed, using a 500 W Tungsten lamp and optical filters, and that this light source produces photodynamic effect via protoporphyrin IX (PpIX) similar to the effect produced by HeNe laser light ...
Rickson Coelho Mesquita +3 more
doaj +1 more source
Laser-induced isotopic selectivity in the resonance ionization of Os [PDF]
, 1992 Isotope selective effects in resonance ionization mass spectrometry (RIMS) pose a potentially serious limitation to the application of this technique to the precise and reproducible measurement of isotope ratios.
Blake, G. A. +3 more
core +1 more source
Anais da Academia Brasileira de Ciências, 2001 The brain is an excitable media in which excitation waves propagate at several scales of time and space. ''One-dimensional'' action potentials (millisecond scale) along the axon membrane, and spreading depression waves (seconds to minutes) at the three ...
VERA M. FERNANDES-DE-LIMA +3 more
doaj +1 more source
Momentum-Transfer to and Elementary-Excitations of a Bose-Einstein Condensate by a Time-Dependent Optical Potential [PDF]
, 2002 We present results of calculations on Bose-Einstein condensed $^{87}$Rb atoms subjected to a moving standing-wave light-potential of the form $V_L(z,t) = V_0(t) \cos(q z-\omega t)$.
B.P. Anderson +22 more
core +1 more source
Semina: Ciências Agrárias, 2013 Iron oxides and 2:1 minerals have a strong influence on the spectral behavior of soils. However, studies that address more deeply the relationship between them and their reflectances are scarce.
Everson Cezar +4 more
doaj +1 more source
Digital spiral object identification using random light [PDF]
, 2017 Photons that are entangled or correlated in orbital angular momentum have been extensively used for remote sensing, object identification and imaging.
Boyd, Robert W +9 more
core +4 more sources
Revista Brasileira de Hematologia e Hemoterapia, 2006 Hematogônias são precursores normais de linhagem B que apresentam características morfológicas e, algumas vezes, imunológicas similares aos linfoblastos das leucemias linfóides agudas (LLA).
Fátima M. G. Jorge +3 more
doaj +1 more source