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Registro Completo |
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
27/06/2017 |
Data da última atualização: |
27/06/2017 |
Autoria: |
SANTOS, T. C. dos; GATES, R. S.; TINÔCO, I. de F. F.; ZOLNIER, S.; BAÊTA, F. da C. |
Afiliação: |
Tatiany Carvalho dos Santos, Universidade Federal de Viçosa, Departamento de Engenharia Agrícola; Richard Stephen Gates, Universidade Federal de Viçosa, Departamento de Engenharia Agrícola; Ilda de Fátima Ferreira Tinôco, Universidade Federal de Viçosa, Departamento de Engenharia Agrícola; Sérgio Zolnier, Universidade Federal de Viçosa, Departamento de Engenharia Agrícola; Fernando da Costa Baêta, Universidade Federal de Viçosa, Departamento de Engenharia Agrícola. |
Título: |
Behavior of Japanese quail in different air velocities and air temperatures. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 5, p. 344-354, maio, 2017. |
Idioma: |
Inglês |
Notas: |
Título em português: Comportamento de codornas japonesas em diferentes velocidades e temperaturas do ar. |
Conteúdo: |
The objective of this work was to evaluate the combined effects of air temperature and air velocity on the behavior of Japanese quail (Coturnix coturnix japonica). A total of 216 Japanese quail in their initial laying phase were used. Bird behavior was categorized with an ethogram (eat, drink, stop, open wings/shiver, others). The experimental design was a randomized complete block, in a 4x4 factorial arrangement, with four air velocities (0, 1, 2, and 3 m s-1) and air temperatures (17, 23, 29, and 35°C). The behavior ?stop? was greater when the birds were subjected to 17°C. At 35°C, a significant reduction (p<0.05) was observed in the behavior ?eat? at 0 m s-1, compared with the other velocities. The behaviors of laying quail are similar in the morning and in the afternoon. Quail remain stopped for a longer time under cold stress conditions, at 17°C. |
Palavras-Chave: |
Estresse por calor; Estresse por frio; Etologia; Sensação térmica; Thermal sensation. |
Thesagro: |
Coturnix coturnix japonica. |
Thesaurus Nal: |
Animal behavior; Cold stress; Coturnix japonica; Heat stress. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/161086/1/Behavior-of-Japanese-quail-in-different.pdf
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Marc: |
LEADER 01838naa a2200301 a 4500 001 2071543 005 2017-06-27 008 2017 bl uuuu u00u1 u #d 100 1 $aSANTOS, T. C. dos 245 $aBehavior of Japanese quail in different air velocities and air temperatures. 260 $c2017 500 $aTítulo em português: Comportamento de codornas japonesas em diferentes velocidades e temperaturas do ar. 520 $aThe objective of this work was to evaluate the combined effects of air temperature and air velocity on the behavior of Japanese quail (Coturnix coturnix japonica). A total of 216 Japanese quail in their initial laying phase were used. Bird behavior was categorized with an ethogram (eat, drink, stop, open wings/shiver, others). The experimental design was a randomized complete block, in a 4x4 factorial arrangement, with four air velocities (0, 1, 2, and 3 m s-1) and air temperatures (17, 23, 29, and 35°C). The behavior ?stop? was greater when the birds were subjected to 17°C. At 35°C, a significant reduction (p<0.05) was observed in the behavior ?eat? at 0 m s-1, compared with the other velocities. The behaviors of laying quail are similar in the morning and in the afternoon. Quail remain stopped for a longer time under cold stress conditions, at 17°C. 650 $aAnimal behavior 650 $aCold stress 650 $aCoturnix japonica 650 $aHeat stress 650 $aCoturnix coturnix japonica 653 $aEstresse por calor 653 $aEstresse por frio 653 $aEtologia 653 $aSensação térmica 653 $aThermal sensation 700 1 $aGATES, R. S. 700 1 $aTINÔCO, I. de F. F. 700 1 $aZOLNIER, S. 700 1 $aBAÊTA, F. da C. 773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 52, n. 5, p. 344-354, maio, 2017.
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Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
28/11/2022 |
Data da última atualização: |
22/01/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
OLIVEIRA, L. R. de; GONÇALVES, D. S.; CAROLINO, A. S.; FACCINATTO, W. M.; MENEZES. D. C.; DIAS, C. O.; COLNAGO, L. A.; RUIZ, Y. L.; IU, S. T.; FONSECA FILHO, H. D.; CHAUDHURI, P.; CAMPELO, P. H.; MASCARENHAS, I. P.; SANCHES, E. A. |
Afiliação: |
LUIZ ALBERTO COLNAGO, CNPDIA. |
Título: |
Head-to-tail and head-to-head molecular chains of poly(p-anisidine): Combined experimental and theoretical evaluation. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Molecules, v. 27, a6326, 2022. |
Páginas: |
28 p. |
DOI: |
https://doi.org/10.3390/molecules27196326 |
Idioma: |
Inglês |
Conteúdo: |
: Poly(p-anisidine) (PPA) is a polyaniline derivative presenting a methoxy (?OCH3) group at the para position of the phenyl ring. Considering the important role of conjugated polymers in novel technological applications, a systematic, combined experimental and theoretical investigation was performed to obtain more insight into the crystallization process of PPA. Conventional oxidative polymerization of p-anisidine monomer was based on a central composite rotational design (CCRD).The effects of the concentration of the monomer, ammonium persulfate (APS), and HCl on the percentage of crystallinity were considered. Several experimental techniques such as X-ray Diffraction(XRD), Scanning Electron Microscopy (SEM), multifractal analysis, Nuclear Magnetic Resonance(13C NMR), Fourier-transform Infrared spectroscopy (FTIR), and complex impedance spectroscopyanalysis, in addition to Density Functional Theory (DFT), were employed to perform a systematic investigation of PPA. The experimental treatments resulted in different crystal structures with a percentage of crystallinity ranging from (29.2 ± 0.6)% (PPA1HT) to (55.1 ± 0.2)% (PPA16HT-HH). A broad halo in the PPA16HT-HH pattern from 2θ = 10.0?30.0◦suggested a reduced crystallinity. Needle and globular-particle morphologies were observed in both samples; the needle morphology might have been related to the crystalline contribution. A multifractal analysis showed that the PPA surface became more complex when the crystallinity was reduced. The proposed molecular structures of PPA were supported by the high-resolution 13C NMR results, allowing us to access the percentage of head-to-tail (HT) and head-to-head (HH) molecular structures. When comparing the calculated and experimental FTIR spectra, the most pronounced changes were observed in ν(C?H), ν(N?H), ν(C?O), and ν(C?N?C) due to the influence of counterions on the polymer backbone as well as the different mechanisms of polymerization. Finally, a significant difference in the electrical conductivitywas observed in the range of 1.00 × 10−9 S.cm−1 and 3.90 × 10−14 S.cm−1, respectively, for PPA1HT and PPA16HT-HH. Menos: Poly(p-anisidine) (PPA) is a polyaniline derivative presenting a methoxy (?OCH3) group at the para position of the phenyl ring. Considering the important role of conjugated polymers in novel technological applications, a systematic, combined experimental and theoretical investigation was performed to obtain more insight into the crystallization process of PPA. Conventional oxidative polymerization of p-anisidine monomer was based on a central composite rotational design (CCRD).The effects of the concentration of the monomer, ammonium persulfate (APS), and HCl on the percentage of crystallinity were considered. Several experimental techniques such as X-ray Diffraction(XRD), Scanning Electron Microscopy (SEM), multifractal analysis, Nuclear Magnetic Resonance(13C NMR), Fourier-transform Infrared spectroscopy (FTIR), and complex impedance spectroscopyanalysis, in addition to Density Functional Theory (DFT), were employed to perform a systematic investigation of PPA. The experimental treatments resulted in different crystal structures with a percentage of crystallinity ranging from (29.2 ± 0.6)% (PPA1HT) to (55.1 ± 0.2)% (PPA16HT-HH). A broad halo in the PPA16HT-HH pattern from 2θ = 10.0?30.0◦suggested a reduced crystallinity. Needle and globular-particle morphologies were observed in both samples; the needle morphology might have been related to the crystalline contribution. A multifractal analysis showed that the PPA surface became more complex when the crystallin... Mostrar Tudo |
Palavras-Chave: |
Conjugated polymer; Multifractal analysis; Poly(p-anisidine). |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1148841/1/P-Head-to-Tail-and-Head-to-Head-Molecular-Chains-of.pdf
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Marc: |
LEADER 03197naa a2200337 a 4500 001 2148841 005 2024-01-22 008 2022 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3390/molecules27196326$2DOI 100 1 $aOLIVEIRA, L. R. de 245 $aHead-to-tail and head-to-head molecular chains of poly(p-anisidine)$bCombined experimental and theoretical evaluation.$h[electronic resource] 260 $c2022 300 $a28 p. 520 $a: Poly(p-anisidine) (PPA) is a polyaniline derivative presenting a methoxy (?OCH3) group at the para position of the phenyl ring. Considering the important role of conjugated polymers in novel technological applications, a systematic, combined experimental and theoretical investigation was performed to obtain more insight into the crystallization process of PPA. Conventional oxidative polymerization of p-anisidine monomer was based on a central composite rotational design (CCRD).The effects of the concentration of the monomer, ammonium persulfate (APS), and HCl on the percentage of crystallinity were considered. Several experimental techniques such as X-ray Diffraction(XRD), Scanning Electron Microscopy (SEM), multifractal analysis, Nuclear Magnetic Resonance(13C NMR), Fourier-transform Infrared spectroscopy (FTIR), and complex impedance spectroscopyanalysis, in addition to Density Functional Theory (DFT), were employed to perform a systematic investigation of PPA. The experimental treatments resulted in different crystal structures with a percentage of crystallinity ranging from (29.2 ± 0.6)% (PPA1HT) to (55.1 ± 0.2)% (PPA16HT-HH). A broad halo in the PPA16HT-HH pattern from 2θ = 10.0?30.0◦suggested a reduced crystallinity. Needle and globular-particle morphologies were observed in both samples; the needle morphology might have been related to the crystalline contribution. A multifractal analysis showed that the PPA surface became more complex when the crystallinity was reduced. The proposed molecular structures of PPA were supported by the high-resolution 13C NMR results, allowing us to access the percentage of head-to-tail (HT) and head-to-head (HH) molecular structures. When comparing the calculated and experimental FTIR spectra, the most pronounced changes were observed in ν(C?H), ν(N?H), ν(C?O), and ν(C?N?C) due to the influence of counterions on the polymer backbone as well as the different mechanisms of polymerization. Finally, a significant difference in the electrical conductivitywas observed in the range of 1.00 × 10−9 S.cm−1 and 3.90 × 10−14 S.cm−1, respectively, for PPA1HT and PPA16HT-HH. 653 $aConjugated polymer 653 $aMultifractal analysis 653 $aPoly(p-anisidine) 700 1 $aGONÇALVES, D. S. 700 1 $aCAROLINO, A. S. 700 1 $aFACCINATTO, W. M. 700 1 $aMENEZES. D. C. 700 1 $aDIAS, C. O. 700 1 $aCOLNAGO, L. A. 700 1 $aRUIZ, Y. L. 700 1 $aIU, S. T. 700 1 $aFONSECA FILHO, H. D. 700 1 $aCHAUDHURI, P. 700 1 $aCAMPELO, P. H. 700 1 $aMASCARENHAS, I. P. 700 1 $aSANCHES, E. A. 773 $tMolecules$gv. 27, a6326, 2022.
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