Consulta: subjectFacets:"Lasers"
Registros recuperados: 4
Data/hora: 13/06/2024 15:16:27

Drone é usado para fazer inventário da floresta no Acre.
Provedor de dados: 14
Autores: FIGUEIREDO, E. O.
Este artigo explica como a Embrapa Acre utiliza o sistema Geoflora para fazer inventário florestal, mensurar biomassa florestal e estoque de carbono.
Tipo: Artigo de periódico
Palavras-chave: Drone; Geoprocessamento; Bosques tropicales; Inventario forestal; Regeneración natural; Sistemas de información geográfica; Aviación agrícola; Fotografía aérea; Teledetección; Vehículos aéreos no tripulados; Aeronave remotamente pilotada; Projeto Geoflora; Fundo JBS pela Amazônia; Embrapa Acre; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Floresta Nativa; Inventário Florestal; Regeneração Natural; Sistema de Informação Geográfica; Aviação Agrícola; Aerofotogrametria; Sensoriamento Remoto; Raio Laser; Tropical forests; Forest inventory; Natural regeneration; Geographic information systems; Agricultural aviation; Aerial photography; Remote sensing; Unmanned aerial vehicles; Lasers; Lidar.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1151500

Application du laser a la detection sous-marine: Experimentation d'un imageur
Provedor de dados: 5
Autores: Kervern, G; Legall, A.
Nowadays, side-looking sonar is the only equipment able to carry out long-range underwater imaging. The use of optics is limited to short-range identification by means of conventional video-cameras. However, active optical systems (lidars) manufacturing, using a blue-green laser, will enable optics to hold its place in the field of long-range underwater imaging. After a short comparison between acoustics and optics in underwater detection and a description of the proper features of underwater optical propagation, we present the different conceivable imaging principles and propose a method to determine their performances. The experimentations described concern a lidar imager mock-up using one of the imaging principles proposed. The pictures obtained deal...
Tipo: Text
Palavras-chave: Optics; Lasers; Detection; Acoustics; Underwater cameras; Sonar imagery; Imaging techniques; Underwater photography; Marine technology; Side scan sonar.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/acte-1139.pdf

Laser imaging technology for subsea inspection: Principles and applications (and use of the ROV).
Provedor de dados: 5
Autores: Klepsvik, J; Torson, H; Thoresen, K.
Recent advances in solid state green laser technology offers a unique possibility for developing compact, low power instruments for high-resolution underwater 3D imaging and surveying. The paper reviews the principles and limitations of underwater imaging and describes two new instrument developments; Spotrange and Spotscan, utilizing the new laser technology for detailed ROV based inspection and surveying. A number of actual field applications are given, including structural inspection, detailed seabed surveying, dimensional control measurements and pipeline free-span measurements.
Tipo: Text
Palavras-chave: Surveying underwater; Underwater equipment; Lasers; Marine technology; Unmanned vehicles.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/1990/acte-1137.pdf

Comparative study of the effects of the Ga-As (904 nm, 150mW) laser and the pulsed ultrasound of 1 MHz in inflammation of tibialis muscle of Wistar rats
Provedor de dados: 52
Autores: Pinto,Marcus Vinícius de Mello; Costa,Daniel Almeida da; Rocha,Lamara Laguardia Valente; Santos,Hélio Ricardo dos; Silva,André Luis dos Santos; Barbosa,Luis Guilherme; Reis,João Batista Alves dos; Bernardo-Filho,Mario.
This paper aims to compare the therapeutic effect of the laser As-Ga of 904nm and pulsed Ultrasound of 1 MHz applied in striated skeletal muscle of inflamed rats. The animals received an intramuscular injection of bupivacaine hydrochloride in tibialis muscle in order to induce the inflammatory process, and after 24 hours, the time was considered 0 for the initiation of therapy, using a laser and ultrasound. Samples collected the muscles of the animals were stained with Hematoxylin-Eosin and histological sections of the groups used for the analysis of the muscle tissue in relation to reducing the inflammatory process, comparing the results of the two therapies used. In this study it is suggested that both treatment with laser as with ultrasound can act as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lasers; Ultrasound; Inflammation; Rats.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000700037