Buscar
Mostrando ítems 1-10 de 98
Optical Doppler shift measurement using a rotating mirror
(American Association of Physics Teachers, 2007-03)
Optical Doppler shift experiments are not simple because the light source cannot easily be moved in a sufficiently smooth and uniform manner to keep the level of noise well below that of the signal. Thus, most Doppler shift ...
Avaliação uterina e ovariana de éguas por meio da ultrassonografia Doppler
(Universidade Estadual Paulista (UNESP), 2015)
Avaliação uterina e ovariana de éguas por meio da ultrassonografia Doppler
(Universidade Estadual Paulista (Unesp), 2015)
Evaluation of tropospheric and ionospheric effects on the geographic localization of data collection platforms
(2007-08-15)
The Brazilian National Institute for Space Research (INPE) is operating the Brazilian Environmental Data Collection System that currently amounts to a user community of around 100 organizations and more than 700 data ...
Evaluation of tropospheric and ionospheric effects on the geographic localization of data collection platforms
(2007-08-15)
The Brazilian National Institute for Space Research (INPE) is operating the Brazilian Environmental Data Collection System that currently amounts to a user community of around 100 organizations and more than 700 data ...
Improving the passive doppler geolocation system through extension of the data reception network
(Sociedade Brasileira de Geofísica, 2014)
Continuous Doppler sounding of the ionosphere during solar flares
(Terra Scientific Publishing, 2018-12)
Solar flares cause a rapid increase in ionization in the ionosphere owing to significant enhancement of ionizing solar radiation in the X-ray and extreme ultraviolet (EUV) spectral ranges. The change of electron densities ...
Avaliação uterina e ovariana de éguas por meio da ultrassonografia Doppler
(Universidade Estadual Paulista (Unesp), 2009)
Doppler ultrasonography is a new technology that has been study by researchers to improve the physiologic and pathologic knowledge about reproduction. This technology is based on Doppler-shifts frequencies or ultrasonic, ...