Título:	X-ray and gamma-ray computerized minitomograph scanner for soil science.
Autoria:	CRUVINEL, P. E. CESAREO, R. CRESTANA, S. MASCARENHAS, S.
Afiliação:	EMBRAPA-CNPDIA; Universita di Roma "La Sapienza", Centro D'Ingigneria Biomedica.
Ano de publicação:	1990
Referência:	IEEE Transactions on Instrumentation and Measurements, New York, v.39, n.5, p.745-750, Oct. 1990.
Conteúdo:	Abstract-A computerized tomograph scanner system using X- and y-rays has been developed for applications in soil science. Previous results were obtained using a miniature X-ray tomograph scanner designed for biomedical analysis [ l]. As a new methodology of instrumentation and in soil research [2], this apparatus has proven to be useful for measuring volumetric water content 8 to an accuracy of *3% and soil bulk density p f 2% (in grams/centimeters3 ). The system features translation and rotation scanning modes, a 200- mm effective field of view, signal processing by pulse counting and 1.0- mm spatial resolution. The performance of the system has been demonstrated by experimentally measuring water content and the bulk density of soil samples.
NAL Thesaurus:	medicine tomography
Palavras-chave:	structure and physiological function
ISSN:	1557-9662
Digital Object Identifier:	10.1109/19.58619
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPDIA)