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Registro Completo |
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Biblioteca(s): |
Embrapa Algodão; Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
19/08/1993 |
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Data da última atualização: |
19/08/1993 |
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Autoria: |
MAIA, A. S.; SILVA, M. J. da. |
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Título: |
Avaliacao economica de diferentes metodos de irrigacao complementar na cultura do algodoeiro arboreo (moco) no quarto ano de producao, Patos, Paraiba-1982. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Campina Grande: EMBRAPA-CNPA, 1983. |
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Páginas: |
5p. |
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Série: |
(EMBRAPA.CNPA. Pesquisa em Andamento,3). |
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Idioma: |
Português |
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Palavras-Chave: |
Arboreo; Avaliacao economica; Brasil; Economic evaluation; Methods; Metodos; Metods; Paraiba; Patos. |
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Thesagro: |
Algodão; Algodão Moco; Gossypium Hirsutum Marie Galante; Irrigação; Método; Mocó. |
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Thesaurus Nal: |
Brazil; cotton; irrigation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00969nam a2200349 a 4500
001 1262613
005 1993-08-19
008 1983 bl uuuu u0uu1 u #d
100 1 $aMAIA, A. S.
245 $aAvaliacao economica de diferentes metodos de irrigacao complementar na cultura do algodoeiro arboreo (moco) no quarto ano de producao, Patos, Paraiba-1982.
260 $aCampina Grande: EMBRAPA-CNPA$c1983
300 $a5p.
490 $a(EMBRAPA.CNPA. Pesquisa em Andamento,3).
650 $aBrazil
650 $acotton
650 $airrigation
650 $aAlgodão
650 $aAlgodão Moco
650 $aGossypium Hirsutum Marie Galante
650 $aIrrigação
650 $aMétodo
650 $aMocó
653 $aArboreo
653 $aAvaliacao economica
653 $aBrasil
653 $aEconomic evaluation
653 $aMethods
653 $aMetodos
653 $aMetods
653 $aParaiba
653 $aPatos
700 1 $aSILVA, M. J. da
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Registro original: |
Embrapa Algodão (CNPA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
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: |
02/07/2013 |
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Autoria: |
MALMONGE, J. A.; CAMPOS, M. S. de; MATTOSO, L. H. C. |
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Afiliação: |
UNESP-Campus de Ilha Solteira; EMBRAPA-CNPDIA. |
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Título: |
Absorption spectra of thin films of poly (o-methoxyaniline) irradiated by X-ray. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
In: ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 20., jun. 1997, Caxambu, MG. Resumos... Sao Paulo: Sociedade Brasileira de Fisica, 1997. |
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Páginas: |
p. 317. |
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Idioma: |
Inglês |
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Conteúdo: |
The adsorption spectra of thim film of poly(o-methoxyaniline)(POMA), chemically synthesized, coated on quartz slides by dip coating from chloroform solution were measured as a function of irradiation dose. The UV-Vis Nir absorption analysis showed that unirradiated films(emeraldine base) presents two adsorption peaks at about 320nm and about 620nm assigned respectively to PI - PI and excitonic transitions. Upon irradiation, under 50% RH, we have observed that the intensity of the first (about 320nm) and second (about 620nm) peaks decrease while the intensity of two new peaks at 840nm and 430nm increase as function of irradiated dose. The same behavior is found when polyanilines are conventionally doped with inorganic acids. These two new absorption bands are consistent with an increase in the mobility of the charge carriers, i.e. doping of the polymers to the conductive regime. After 230kGy of radiation dose, we observed that absorption at 620 disappeared and the absorption at 840nm and 430nm had reached the maximum. The irradiated film was dedoped with 0.1M NH-4OH and its spectra of absorption was similar to unirradiated film. This same reversible process occurs to polyanilines doped with inorganic acid. The electrical conductivity measured by four probe increases from about 10E-10 S/cm (unirradiated films) to 10E-10 S/cm (irradiated fims). The conductivity reached for polyanilines was 0.5S/cm. We have also observed that conductivity increases as a function of radiation dose and humidity level, and that water plays an important role on doping induced by X-ray radiation. MenosThe adsorption spectra of thim film of poly(o-methoxyaniline)(POMA), chemically synthesized, coated on quartz slides by dip coating from chloroform solution were measured as a function of irradiation dose. The UV-Vis Nir absorption analysis showed that unirradiated films(emeraldine base) presents two adsorption peaks at about 320nm and about 620nm assigned respectively to PI - PI and excitonic transitions. Upon irradiation, under 50% RH, we have observed that the intensity of the first (about 320nm) and second (about 620nm) peaks decrease while the intensity of two new peaks at 840nm and 430nm increase as function of irradiated dose. The same behavior is found when polyanilines are conventionally doped with inorganic acids. These two new absorption bands are consistent with an increase in the mobility of the charge carriers, i.e. doping of the polymers to the conductive regime. After 230kGy of radiation dose, we observed that absorption at 620 disappeared and the absorption at 840nm and 430nm had reached the maximum. The irradiated film was dedoped with 0.1M NH-4OH and its spectra of absorption was similar to unirradiated film. This same reversible process occurs to polyanilines doped with inorganic acid. The electrical conductivity measured by four probe increases from about 10E-10 S/cm (unirradiated films) to 10E-10 S/cm (irradiated fims). The conductivity reached for polyanilines was 0.5S/cm. We have also observed that conductivity increases as a function of radiation dos... Mostrar Tudo |
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Palavras-Chave: |
filmes; polímeros. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02187naa a2200181 a 4500
001 1027261
005 2013-07-02
008 1997 bl --- 0-- u #d
100 1 $aMALMONGE, J. A.
245 $aAbsorption spectra of thin films of poly (o-methoxyaniline) irradiated by X-ray.
260 $c1997
300 $ap. 317.
520 $aThe adsorption spectra of thim film of poly(o-methoxyaniline)(POMA), chemically synthesized, coated on quartz slides by dip coating from chloroform solution were measured as a function of irradiation dose. The UV-Vis Nir absorption analysis showed that unirradiated films(emeraldine base) presents two adsorption peaks at about 320nm and about 620nm assigned respectively to PI - PI and excitonic transitions. Upon irradiation, under 50% RH, we have observed that the intensity of the first (about 320nm) and second (about 620nm) peaks decrease while the intensity of two new peaks at 840nm and 430nm increase as function of irradiated dose. The same behavior is found when polyanilines are conventionally doped with inorganic acids. These two new absorption bands are consistent with an increase in the mobility of the charge carriers, i.e. doping of the polymers to the conductive regime. After 230kGy of radiation dose, we observed that absorption at 620 disappeared and the absorption at 840nm and 430nm had reached the maximum. The irradiated film was dedoped with 0.1M NH-4OH and its spectra of absorption was similar to unirradiated film. This same reversible process occurs to polyanilines doped with inorganic acid. The electrical conductivity measured by four probe increases from about 10E-10 S/cm (unirradiated films) to 10E-10 S/cm (irradiated fims). The conductivity reached for polyanilines was 0.5S/cm. We have also observed that conductivity increases as a function of radiation dose and humidity level, and that water plays an important role on doping induced by X-ray radiation.
653 $afilmes
653 $apolímeros
700 1 $aCAMPOS, M. S. de
700 1 $aMATTOSO, L. H. C.
773 $tIn: ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 20., jun. 1997, Caxambu, MG. Resumos... Sao Paulo: Sociedade Brasileira de Fisica, 1997.
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