| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
22/12/1999 |
|
Data da última atualização: |
09/03/2010 |
|
Autoria: |
CARVALHO, A. A.; MASCARENHAS, S.; PAULA, M. H. de. |
|
Afiliação: |
UNESP-Campus de Ilha Solteira; EMBRAPA-CNPDIA. |
|
Título: |
A new pulsed pyroelectric radiation dosimeter. |
|
Ano de publicação: |
1988 |
|
Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON RADIATION PHYSICS, 4., Oct. 1988, São Paulo, SP. Book of abstracts... São Paulo: [s.n.], 1988. |
|
Páginas: |
p.II-25. |
|
Idioma: |
Inglês |
|
Conteúdo: |
We describe a new type of radiation dosimeter for the diagnostic X-ray region using a pyroelectric detector. The pulsed pyroelectric radiation dosimeter (PPERD) is a system constituted by a X-ray beam commutator, a pyroelectric chamber, a pre-amplifier and an electronic peak detector. The pyroelectric chamber consists basically of a lead zirconium titanate (PZT) ceramic (17mm x 17mm and 3mm thick) on a nylon support. The chamber is evacuated to about 1mm Hg. The thickness of the detector is such that it absorbed more than 99% of the X-ray beam used in these studies. The pyroelectric element itself absorbs a X-ray pulse and provides a voltage proportional to the energy absorbed. The PPERD has the following characteristics for diagnostic X-ray beams: 1) it responds linearly to the radiation intensity for a given radiation spectrum; 2) it responds linearly to the radiatin energy fluence rate; 3) the pyroelectric chamber is simple to construct, inexpensive and rugged; 4) the lower detection limit of energy fluence rate range and of exposure rate range are respectively 20mW/m2 and 9,0.10E-6C.KgE-1 sE-1 (35mR/s). |
|
Palavras-Chave: |
Dosimeter; Pulsed; Pyroelectric; Radiation. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01716naa a2200205 a 4500
001 1026547
005 2010-03-09
008 1988 bl --- 0-- u #d
100 1 $aCARVALHO, A. A.
245 $aA new pulsed pyroelectric radiation dosimeter.
260 $c1988
300 $ap.II-25.
520 $aWe describe a new type of radiation dosimeter for the diagnostic X-ray region using a pyroelectric detector. The pulsed pyroelectric radiation dosimeter (PPERD) is a system constituted by a X-ray beam commutator, a pyroelectric chamber, a pre-amplifier and an electronic peak detector. The pyroelectric chamber consists basically of a lead zirconium titanate (PZT) ceramic (17mm x 17mm and 3mm thick) on a nylon support. The chamber is evacuated to about 1mm Hg. The thickness of the detector is such that it absorbed more than 99% of the X-ray beam used in these studies. The pyroelectric element itself absorbs a X-ray pulse and provides a voltage proportional to the energy absorbed. The PPERD has the following characteristics for diagnostic X-ray beams: 1) it responds linearly to the radiation intensity for a given radiation spectrum; 2) it responds linearly to the radiatin energy fluence rate; 3) the pyroelectric chamber is simple to construct, inexpensive and rugged; 4) the lower detection limit of energy fluence rate range and of exposure rate range are respectively 20mW/m2 and 9,0.10E-6C.KgE-1 sE-1 (35mR/s).
653 $aDosimeter
653 $aPulsed
653 $aPyroelectric
653 $aRadiation
700 1 $aMASCARENHAS, S.
700 1 $aPAULA, M. H. de
773 $tIn: INTERNATIONAL SYMPOSIUM ON RADIATION PHYSICS, 4., Oct. 1988, São Paulo, SP. Book of abstracts... São Paulo: [s.n.], 1988.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Soja. |
|
Data corrente: |
06/10/2017 |
|
Data da última atualização: |
09/03/2018 |
|
Tipo da produção científica: |
Folder/Folheto/Cartilha |
|
Autoria: |
MELO, C. L. P. de; PIPOLO, A. E.; ARIAS, C. A. A.; OLIVEIRA, M. F. de; MOREIRA, J. U. V.; SOARES, R. M.; SOUZA, M. G. de; DALBOSCO, M.; DENGLER, R. U. |
|
Afiliação: |
CARLOS LASARO PEREIRA DE MELO, CNPSO; ANTONIO EDUARDO PIPOLO, CNPSO; CARLOS ALBERTO ARRABAL ARIAS, CNPSO; MARCELO FERNANDES DE OLIVEIRA, CNPSO; JOSE UBIRAJARA VIEIRA MOREIRA, CNPSO; RAFAEL MOREIRA SOARES, CNPSO; FUNDAÇÃO MERIDIONAL; FUNDAÇÃO MERIDIONAL; FUNDAÇÃO MERIDIONAL. |
|
Título: |
BRS 511: sua nova aliada no manejo da ferrugem. |
|
Ano de publicação: |
2017 |
|
Fonte/Imprenta: |
Londrina: Embrapa Soja, 2017. |
|
Idioma: |
Português |
|
Notas: |
1 folder. |
|
Thesagro: |
Ferrugem; Soja. |
|
Thesaurus NAL: |
Soybean rust. |
|
Categoria do assunto: |
--
X Pesquisa, Tecnologia e Engenharia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/164813/1/38135-folder-BRS-511-ferrugem.pdf
|
|
Marc: |
LEADER 00619nam a2200241 a 4500
001 2076896
005 2018-03-09
008 2017 bl uuuu u0uu1 u #d
100 1 $aMELO, C. L. P. de
245 $aBRS 511$bsua nova aliada no manejo da ferrugem.
260 $aLondrina: Embrapa Soja$c2017
500 $a1 folder.
650 $aSoybean rust
650 $aFerrugem
650 $aSoja
700 1 $aPIPOLO, A. E.
700 1 $aARIAS, C. A. A.
700 1 $aOLIVEIRA, M. F. de
700 1 $aMOREIRA, J. U. V.
700 1 $aSOARES, R. M.
700 1 $aSOUZA, M. G. de
700 1 $aDALBOSCO, M.
700 1 $aDENGLER, R. U.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
