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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
22/12/1999 |
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Data da última atualização: |
09/03/2010 |
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Autoria: |
FERRAZ, L. F. M.; BERTUCCI NETO, V.; MARTIN, A. A. |
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Afiliação: |
USP-IFSC; EMBRAPA-CNPDIA. |
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Título: |
Termômetro de silício para caracterização de cerâmicas supercondutoras. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
In: ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 12., maio 1989, Caxambu, MG. Programas e resumos... Sao Paulo: Sociedade Brasileira de Fisica, 1989. |
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Páginas: |
p.113. |
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Idioma: |
Português |
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Conteúdo: |
Para a determinacao do efeito Meissner e da suscetibilidade magnetica em ceramicas supercondutoras, necessitamos ampliar a escala de temperatura na regiao do nitrogenio liquido, devido a compressao de escala que possui a maioria dos termopares nesta faixa. Baseados nisto, apresentamos um dispositivo semicondutor que age como sensor de temperatura com eficientes resultados nesta faixa. |
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Palavras-Chave: |
Caracterização; Cerâmicas; Dispositivo; Sensor; Supercondutoras. |
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Thesagro: |
Silício; Temperatura; Termômetro. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01156naa a2200253 a 4500
001 1026601
005 2010-03-09
008 1989 bl --- 0-- u #d
100 1 $aFERRAZ, L. F. M.
245 $aTermômetro de silício para caracterização de cerâmicas supercondutoras.
260 $c1989
300 $ap.113.
520 $aPara a determinacao do efeito Meissner e da suscetibilidade magnetica em ceramicas supercondutoras, necessitamos ampliar a escala de temperatura na regiao do nitrogenio liquido, devido a compressao de escala que possui a maioria dos termopares nesta faixa. Baseados nisto, apresentamos um dispositivo semicondutor que age como sensor de temperatura com eficientes resultados nesta faixa.
650 $aSilício
650 $aTemperatura
650 $aTermômetro
653 $aCaracterização
653 $aCerâmicas
653 $aDispositivo
653 $aSensor
653 $aSupercondutoras
700 1 $aBERTUCCI NETO, V.
700 1 $aMARTIN, A. A.
773 $tIn: ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 12., maio 1989, Caxambu, MG. Programas e resumos... Sao Paulo: Sociedade Brasileira de Fisica, 1989.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
30/11/2022 |
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Data da última atualização: |
30/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
ROCHA, M. A. C. da; SOUZA, E. H. de; SOARES, T. L.; SOUZA, F. V. D.; ALFAYA, M. C. F.; COSTA, M. A. P. de C. |
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Afiliação: |
MOEMA ANGÉLICA CHAVES DA ROCHA, UNIVERSIDADE FEDERAL DO RECÔNCAVO DA BAHIA; EVERTON HILO DE SOUZA, UNIVERSIDADE FEDERAL DO RECÔNCAVO DA BAHIA; TALIANE LEILA SOARES, UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA; FERNANDA VIDIGAL DUARTE SOUZA, CNPMF; MARIA CRISTINA FERREIRA ALFAYA, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA BAIANO; MARIA ANGÉLICA PEREIRA DE CARVALHO COSTA, UNIVERSIDADE FEDERAL DO RECÔNCAVO DA BAHIA. |
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Título: |
Comparative seed germination, morphology and post-seminal development of two Bromeliaceae species with ornamental potential. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Acta Scientiarum. Biological Sciences, v. 44, e58413, 2022. |
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DOI: |
10.4025/actascibiolsci.v44i1.58413 |
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Idioma: |
Inglês |
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Conteúdo: |
Knowledge about the behavior of seeds is important to support studies to minimize the effects of predatory extractivism on ornamental bromeliads. The aim of this study was to evaluate the germination, seed morphology and post-seminal development of Hohenbergia belemii and Neoregelia compacta (Bromeliaceae) in different substrates. Seeds were disinfested with a sodium hypochlorite solution and germinated in four substrates: germitest paper; washed sand; vermiculite; and the commercial substrate Plantmax®. The experimental design was completely randomized in a 2 x 4 factorial scheme, with four repetitions and 50 seeds per repetition. The seeds were sown on the substrates and stored in plastic Gerbox® boxes, which were kept in BOD chambers with 12 hours photoperiod at constant temperature of 30ºC. Data were collected daily to calculate germination percentage and growth performance. The germination started on the 4th day after sowing (DAS) for H. belemii, with stabilization on the 11th DAS, while this occurred from the 5th DAS for N. compacta with stabilization on the 21st DAS. Germination was classified as development of epigeal and cryptocotylar seedlings for both species. The vermiculite substrate had a significant effect on seed germination, GSI (germination speed index) and growth of seedlings of both species. Our findings can support future research on seed technology and also contribute to better knowledge of the evolution of morphological characters of these bromeliad species. MenosKnowledge about the behavior of seeds is important to support studies to minimize the effects of predatory extractivism on ornamental bromeliads. The aim of this study was to evaluate the germination, seed morphology and post-seminal development of Hohenbergia belemii and Neoregelia compacta (Bromeliaceae) in different substrates. Seeds were disinfested with a sodium hypochlorite solution and germinated in four substrates: germitest paper; washed sand; vermiculite; and the commercial substrate Plantmax®. The experimental design was completely randomized in a 2 x 4 factorial scheme, with four repetitions and 50 seeds per repetition. The seeds were sown on the substrates and stored in plastic Gerbox® boxes, which were kept in BOD chambers with 12 hours photoperiod at constant temperature of 30ºC. Data were collected daily to calculate germination percentage and growth performance. The germination started on the 4th day after sowing (DAS) for H. belemii, with stabilization on the 11th DAS, while this occurred from the 5th DAS for N. compacta with stabilization on the 21st DAS. Germination was classified as development of epigeal and cryptocotylar seedlings for both species. The vermiculite substrate had a significant effect on seed germination, GSI (germination speed index) and growth of seedlings of both species. Our findings can support future research on seed technology and also contribute to better knowledge of the evolution of morphological characters of these bromeliad sp... Mostrar Tudo |
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Thesagro: |
Bromélia; Planta Ornamental. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02224naa a2200217 a 4500
001 2149030
005 2022-11-30
008 2022 bl uuuu u00u1 u #d
024 7 $a10.4025/actascibiolsci.v44i1.58413$2DOI
100 1 $aROCHA, M. A. C. da
245 $aComparative seed germination, morphology and post-seminal development of two Bromeliaceae species with ornamental potential.$h[electronic resource]
260 $c2022
520 $aKnowledge about the behavior of seeds is important to support studies to minimize the effects of predatory extractivism on ornamental bromeliads. The aim of this study was to evaluate the germination, seed morphology and post-seminal development of Hohenbergia belemii and Neoregelia compacta (Bromeliaceae) in different substrates. Seeds were disinfested with a sodium hypochlorite solution and germinated in four substrates: germitest paper; washed sand; vermiculite; and the commercial substrate Plantmax®. The experimental design was completely randomized in a 2 x 4 factorial scheme, with four repetitions and 50 seeds per repetition. The seeds were sown on the substrates and stored in plastic Gerbox® boxes, which were kept in BOD chambers with 12 hours photoperiod at constant temperature of 30ºC. Data were collected daily to calculate germination percentage and growth performance. The germination started on the 4th day after sowing (DAS) for H. belemii, with stabilization on the 11th DAS, while this occurred from the 5th DAS for N. compacta with stabilization on the 21st DAS. Germination was classified as development of epigeal and cryptocotylar seedlings for both species. The vermiculite substrate had a significant effect on seed germination, GSI (germination speed index) and growth of seedlings of both species. Our findings can support future research on seed technology and also contribute to better knowledge of the evolution of morphological characters of these bromeliad species.
650 $aBromélia
650 $aPlanta Ornamental
700 1 $aSOUZA, E. H. de
700 1 $aSOARES, T. L.
700 1 $aSOUZA, F. V. D.
700 1 $aALFAYA, M. C. F.
700 1 $aCOSTA, M. A. P. de C.
773 $tActa Scientiarum. Biological Sciences$gv. 44, e58413, 2022.
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