| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Cerrados. |
|
Data corrente: |
08/07/1992 |
|
Data da última atualização: |
08/07/1992 |
|
Autoria: |
MESQUITA FILHO, M. V.; MIRANDA, L. N. de. |
|
Título: |
Avaliacao de cultivares de soja para sua tolerancia a toxicidade de aluminio com relacao a disponibilidade em fosforo em solo de cerrado. |
|
Ano de publicação: |
1984 |
|
Fonte/Imprenta: |
Ciencia e Cultura, Sao Paulo, v.36, n.2, p.275-280, 1984. |
|
Idioma: |
Português |
|
Conteúdo: |
Pelo estudo de condicoes de campo num Latossolo Vermelho Escuro distrofico, procurou-se identificar os valores limites da % saturacao de Al para quinze cultivares de soja, com base na combinacao de diferentes niveis de situracao de aluminio, disponibilidade de fosforo e producao de graos. Utilizou-se um esquema fatorial split-split-plot com tres niveis de calcario (0,5, 1,5 e 4,0 t/ha, PRNT = 100%) e tres niveis de fosforo (160, 778 e 1374 kg de P2 05/ha) dispostos em blocos ao acaso com tres repeticoes. Os tres niveis de calcario foram aplicados nas parcelas, os de fosforo nas subparcelas enquanto os cultivares de soja plantados nas subsubparcelas. Todos os cultivares apresentaram rendimentos aumentando proporcionalmente a disponibilidade de fosforo e descrevendo com o aumento da situacao de aluminio no solo. Ao nivel de 9,1ppm de P tornou-se possivel caracterizar o grau de tolerancia ao aluminio, usando como criterio 80% da producao maxima de cada cultivar o que permitiu classificar os cultivares de soja desde muito sensiveis (limite da saturacao de Al 20%) ate tolerantes (limite da saturacao de Al=51 a 60%). |
|
Palavras-Chave: |
Avaliacao; Cultivar. |
|
Thesagro: |
Alumínio; Cerrado; Fósforo; Glycine Max; Grão; Produção; Soja; Solo; Toxidez. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01858naa a2200265 a 4500
001 1547519
005 1992-07-08
008 1984 bl --- 0-- u #d
100 1 $aMESQUITA FILHO, M. V.
245 $aAvaliacao de cultivares de soja para sua tolerancia a toxicidade de aluminio com relacao a disponibilidade em fosforo em solo de cerrado.
260 $c1984
520 $aPelo estudo de condicoes de campo num Latossolo Vermelho Escuro distrofico, procurou-se identificar os valores limites da % saturacao de Al para quinze cultivares de soja, com base na combinacao de diferentes niveis de situracao de aluminio, disponibilidade de fosforo e producao de graos. Utilizou-se um esquema fatorial split-split-plot com tres niveis de calcario (0,5, 1,5 e 4,0 t/ha, PRNT = 100%) e tres niveis de fosforo (160, 778 e 1374 kg de P2 05/ha) dispostos em blocos ao acaso com tres repeticoes. Os tres niveis de calcario foram aplicados nas parcelas, os de fosforo nas subparcelas enquanto os cultivares de soja plantados nas subsubparcelas. Todos os cultivares apresentaram rendimentos aumentando proporcionalmente a disponibilidade de fosforo e descrevendo com o aumento da situacao de aluminio no solo. Ao nivel de 9,1ppm de P tornou-se possivel caracterizar o grau de tolerancia ao aluminio, usando como criterio 80% da producao maxima de cada cultivar o que permitiu classificar os cultivares de soja desde muito sensiveis (limite da saturacao de Al 20%) ate tolerantes (limite da saturacao de Al=51 a 60%).
650 $aAlumínio
650 $aCerrado
650 $aFósforo
650 $aGlycine Max
650 $aGrão
650 $aProdução
650 $aSoja
650 $aSolo
650 $aToxidez
653 $aAvaliacao
653 $aCultivar
700 1 $aMIRANDA, L. N. de
773 $tCiencia e Cultura, Sao Paulo$gv.36, n.2, p.275-280, 1984.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Cerrados (CPAC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
12/04/2022 |
|
Data da última atualização: |
23/01/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
B - 1 |
|
Autoria: |
BAFFA, O.; COSTA-FILHO, A.; CRESTANA, S.; OLIVA, G.; ONUCHIC, J. N.; REZENDE, S. M. |
|
Afiliação: |
SILVIO CRESTANA, CNPDIA. |
|
Título: |
Sergio Mascarenhas a polymath in physics. |
|
Ano de publicação: |
2022 |
|
Fonte/Imprenta: |
Brazilian Journal of Physics, v. 52, n. 3, a. 93, 2022. |
|
Páginas: |
3 p. |
|
ISSN: |
0103-9733 |
|
DOI: |
https://doi.org/10.1007/s13538-022-01101-y |
|
Idioma: |
Inglês |
|
Conteúdo: |
Sergio Mascarenhas was born in Rio de Janeiro on May 2, 1928, and sadly passed away on May 31, 2021, at the age of 93, after a prolifc life dedicated to developing science and technology in Brazil. Sergio Mascarenhas is one of the founding fathers of condensed matter physics in Brazil. He was a student of the Joaquim da Costa Ribeiro at Universidade do Brasil in Rio de Janeiro. He published his frst papers working on the thermodieletric efect, discovered by Costa Ribeiro. Mascarenhas was the one who called the new phenomenon the Costa Ribeiro efect. He took the frst steps in his academic career in 1955 by moving from Rio de Janeiro, at the time, the country’s capital and principal city, to a small city in the inland of the state of Sao Paulo, São Carlos, when the University of Sao Paulo was expanding its activities beyond the city of Sao Paulo. At that time, Sao Carlos was the host of a promising engineering school. Sergio was hired at the Physics Department and from the very beginning was doing research in condensed matter. This was of-stream at that moment, when the most prestigious areas of physics research were nuclear, high energy, and theoretical physics, and solid-state physics was considered as a second-class research area. He followed the steps of Joaquim da Costa Ribeiro, his mentor in Rio de Janeiro, working in the same class of problems. Of course, this was what was possible to do with the limited experimental resources available. Nevertheless, Mascarenhas published, as a sole author, an important paper in 1970 (S. Mascarenhas (1970) Charge and polarization storage n solids, Radiation Efects: Incorporating Plasma Science and Plasma Technology, 4:2, 263–270, https://doi.org/10.1080/00337577008242012), which summarizes the research he had done. In the paper, he reported on the study of the Costa Ribeiro efect (charge storage during phase changes), photo and thermo electrets (charge and polarization storage due to dipoles, space charge, or electronic efects associated with trapping), and ferroelectricity (in this case only related to ice). Thus, one can appreciate the breadth of studies he pursued and the vast network of collaborators he developed in his career. This is an important point to underline. Sergio always thought of research as a collaborative enterprise and loved sharing ideas and working with research teams. MenosSergio Mascarenhas was born in Rio de Janeiro on May 2, 1928, and sadly passed away on May 31, 2021, at the age of 93, after a prolifc life dedicated to developing science and technology in Brazil. Sergio Mascarenhas is one of the founding fathers of condensed matter physics in Brazil. He was a student of the Joaquim da Costa Ribeiro at Universidade do Brasil in Rio de Janeiro. He published his frst papers working on the thermodieletric efect, discovered by Costa Ribeiro. Mascarenhas was the one who called the new phenomenon the Costa Ribeiro efect. He took the frst steps in his academic career in 1955 by moving from Rio de Janeiro, at the time, the country’s capital and principal city, to a small city in the inland of the state of Sao Paulo, São Carlos, when the University of Sao Paulo was expanding its activities beyond the city of Sao Paulo. At that time, Sao Carlos was the host of a promising engineering school. Sergio was hired at the Physics Department and from the very beginning was doing research in condensed matter. This was of-stream at that moment, when the most prestigious areas of physics research were nuclear, high energy, and theoretical physics, and solid-state physics was considered as a second-class research area. He followed the steps of Joaquim da Costa Ribeiro, his mentor in Rio de Janeiro, working in the same class of problems. Of course, this was what was possible to do with the limited experimental resources available. Nevertheless, Mascarenhas publis... Mostrar Tudo |
|
Palavras-Chave: |
Science and technology in Brazil; Thermodieletric effect. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1142170/1/P-Sergio-Mascarenhas-a-Polymath-in-Physics.pdf
|
|
Marc: |
LEADER 03063naa a2200241 a 4500
001 2142170
005 2024-01-23
008 2022 bl uuuu u00u1 u #d
022 $a0103-9733
024 7 $ahttps://doi.org/10.1007/s13538-022-01101-y$2DOI
100 1 $aBAFFA, O.
245 $aSergio Mascarenhas a polymath in physics.$h[electronic resource]
260 $c2022
300 $a3 p.
520 $aSergio Mascarenhas was born in Rio de Janeiro on May 2, 1928, and sadly passed away on May 31, 2021, at the age of 93, after a prolifc life dedicated to developing science and technology in Brazil. Sergio Mascarenhas is one of the founding fathers of condensed matter physics in Brazil. He was a student of the Joaquim da Costa Ribeiro at Universidade do Brasil in Rio de Janeiro. He published his frst papers working on the thermodieletric efect, discovered by Costa Ribeiro. Mascarenhas was the one who called the new phenomenon the Costa Ribeiro efect. He took the frst steps in his academic career in 1955 by moving from Rio de Janeiro, at the time, the country’s capital and principal city, to a small city in the inland of the state of Sao Paulo, São Carlos, when the University of Sao Paulo was expanding its activities beyond the city of Sao Paulo. At that time, Sao Carlos was the host of a promising engineering school. Sergio was hired at the Physics Department and from the very beginning was doing research in condensed matter. This was of-stream at that moment, when the most prestigious areas of physics research were nuclear, high energy, and theoretical physics, and solid-state physics was considered as a second-class research area. He followed the steps of Joaquim da Costa Ribeiro, his mentor in Rio de Janeiro, working in the same class of problems. Of course, this was what was possible to do with the limited experimental resources available. Nevertheless, Mascarenhas published, as a sole author, an important paper in 1970 (S. Mascarenhas (1970) Charge and polarization storage n solids, Radiation Efects: Incorporating Plasma Science and Plasma Technology, 4:2, 263–270, https://doi.org/10.1080/00337577008242012), which summarizes the research he had done. In the paper, he reported on the study of the Costa Ribeiro efect (charge storage during phase changes), photo and thermo electrets (charge and polarization storage due to dipoles, space charge, or electronic efects associated with trapping), and ferroelectricity (in this case only related to ice). Thus, one can appreciate the breadth of studies he pursued and the vast network of collaborators he developed in his career. This is an important point to underline. Sergio always thought of research as a collaborative enterprise and loved sharing ideas and working with research teams.
653 $aScience and technology in Brazil
653 $aThermodieletric effect
700 1 $aCOSTA-FILHO, A.
700 1 $aCRESTANA, S.
700 1 $aOLIVA, G.
700 1 $aONUCHIC, J. N.
700 1 $aREZENDE, S. M.
773 $tBrazilian Journal of Physics$gv. 52, n. 3, a. 93, 2022.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
