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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
21/12/2017 |
Data da última atualização: |
22/12/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CHEN, K.; HUGHES, R. M.; BRITO, J. G.; LEAL, C. G.; LEITÃO, R. P.; OLIVEIRA-JÚNIOR, J. M. B. de; OLIVEIRA, V. C. de; DIAS-SILVA, K.; FERRAZ, S. F. B.; FERREIRA, J. N.; HAMADA, N.; JUEN, L.; NESSIMIAN, J.; POMPEU, P. S.; ZUANON, J. |
Afiliação: |
Kai Chen, Nanjing Agricultural University / Nanjing Hydraulic Research Institute; Robert M. Hughes, Oregon State University; Janaina G. Brito, INPA; Cecilia G. Leal, UFLA / MPEG / Lancaster University; Rafael P. Leitão, INPA; José M. B. de Oliveira-Júnior, UFOPA; Vívian C. de Oliveira, INPA; Karina Dias-Silva, INPA; Silvio F. B. Ferraz, ESALQ/USP; JOICE NUNES FERREIRA, CPATU; Neusa Hamada, INPA; Leandro Juen, UFPA; Jorge Nessimian, UFRJ; Paulo S. Pompeu, UFLA; Jansen Zuanon, INPA. |
Título: |
A multi-assemblage, multi-metric biological condition index for eastern Amazonia streams. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Ecological Indicators, v. 78, p. 48-61, May 2017. |
DOI: |
https://doi.org/10.1016/j.ecolind.2017.03.003 |
Idioma: |
Inglês |
Conteúdo: |
Multimetric indices (MMIs) are widely used for assessing ecosystem condition and they have been developed for a variety of biological assemblages. However, when multiple assemblages are assessed at sites, the assessment results may differ because of differing physiological sensitivities to particular stressor gradients, different organism size and guilds, and the effects of different scales of disturbances on the assemblages. Those differences create problems for managers seeking to avoid type-1 and type-2 statistical errors. To alleviate those problems, we used an anthropogenic disturbance index for selecting and weighting metrics, modeled metrics against natural variability to reduce the natural variability in metrics, and developed an MMI based on both fish and aquatic insect metrics. We evaluated eight different ways of calibrating and combining candidate metrics and found that MMIs with unweighted and modeled aquatic insect and fish metrics were the preferred MMI options |
Palavras-Chave: |
Avaliação biológica; Indicador ecológico; Inseto aquático. |
Thesagro: |
Ecossistema; Inseto; Peixe. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02053naa a2200373 a 4500 001 2083327 005 2021-12-22 008 2017 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.ecolind.2017.03.003$2DOI 100 1 $aCHEN, K. 245 $aA multi-assemblage, multi-metric biological condition index for eastern Amazonia streams.$h[electronic resource] 260 $c2017 520 $aMultimetric indices (MMIs) are widely used for assessing ecosystem condition and they have been developed for a variety of biological assemblages. However, when multiple assemblages are assessed at sites, the assessment results may differ because of differing physiological sensitivities to particular stressor gradients, different organism size and guilds, and the effects of different scales of disturbances on the assemblages. Those differences create problems for managers seeking to avoid type-1 and type-2 statistical errors. To alleviate those problems, we used an anthropogenic disturbance index for selecting and weighting metrics, modeled metrics against natural variability to reduce the natural variability in metrics, and developed an MMI based on both fish and aquatic insect metrics. We evaluated eight different ways of calibrating and combining candidate metrics and found that MMIs with unweighted and modeled aquatic insect and fish metrics were the preferred MMI options 650 $aEcossistema 650 $aInseto 650 $aPeixe 653 $aAvaliação biológica 653 $aIndicador ecológico 653 $aInseto aquático 700 1 $aHUGHES, R. M. 700 1 $aBRITO, J. G. 700 1 $aLEAL, C. G. 700 1 $aLEITÃO, R. P. 700 1 $aOLIVEIRA-JÚNIOR, J. M. B. de 700 1 $aOLIVEIRA, V. C. de 700 1 $aDIAS-SILVA, K. 700 1 $aFERRAZ, S. F. B. 700 1 $aFERREIRA, J. N. 700 1 $aHAMADA, N. 700 1 $aJUEN, L. 700 1 $aNESSIMIAN, J. 700 1 $aPOMPEU, P. S. 700 1 $aZUANON, J. 773 $tEcological Indicators$gv. 78, p. 48-61, May 2017.
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Embrapa Amazônia Oriental (CPATU) |
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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
11/03/2019 |
Data da última atualização: |
30/10/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
HORNUNG, P. S.; LAZZAROTTO, S. R. da S.; BELLETTINI, M. B.; LAZZAROTTO, M.; BETA, T.; RIBANI, R. H.; SCHNITZLER, E. |
Afiliação: |
Polyanna S. Hornung, UFPR; Simone Rosa da Silveira Lazzarotto, Doutoranda da UEPG; Marcelo B. Bellettini, UFPR; MARCELO LAZZAROTTO, CNPF; Trust Beta, University of Manitoba; Rosemary H. Ribani, UFPR; Egon Schnitzler, UEPG. |
Título: |
Novel oxidized and UV-irradiated Araucaria angustifolia pine seed starch for enhanced functional properties. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Starch, v. 71, n. 3/4, 1800140, March 2019. 10 p. |
DOI: |
10.1002/star.201800140 |
Idioma: |
Inglês |
Conteúdo: |
Starch is an important raw material for industrial processes. Therefore, an investigation of new sources of starch and starch modification methods is necessary. The dual oxidation effect on the properties of the native pine seed starch is investigated. Native starch is extracted from pine seeds and its proximate composition determined. The starch is then subjected to a dual oxidation process in standard NaClO or H2O2 solutions (0.2; 0.5; 0.8 mol L1) and simultaneous exposure to ultraviolet light irradiation (UVC ? ¼ 254 nm). Thermogravimetric (TG-DTA) curves reveal enhanced stability to thermal degradation of the dual NaClO/UV process modified starch up to 20%. Differential scanning calorimetry (DSC) shows a strong decrease in gelatinization enthalpy due to the action of the UV-rays coupled with the sodium hypochlorite (NaClO) solution. The H2O2/UV modified starch has a high final viscosity while the NaClO/UV starch pastes have a low tendency to recrystallize. Furthermore, structural analysis using an X-ray diffractometer and scanning electron microscopy (SEM) show crystallinity patterns of type A starch and that the shape of the starch granules are unaltered following the modification processes. Color parameters show a strong increase in the L value (for whiteness) for the NaClO/UV treated samples. The modified starches demonstrate improved physicochemical properties which are suitable for several industrial applications including as stabilizers for frozen bakery products, whitening agents for paper products, and tableting agents for cosmetic and pharmaceuticals products. MenosStarch is an important raw material for industrial processes. Therefore, an investigation of new sources of starch and starch modification methods is necessary. The dual oxidation effect on the properties of the native pine seed starch is investigated. Native starch is extracted from pine seeds and its proximate composition determined. The starch is then subjected to a dual oxidation process in standard NaClO or H2O2 solutions (0.2; 0.5; 0.8 mol L1) and simultaneous exposure to ultraviolet light irradiation (UVC ? ¼ 254 nm). Thermogravimetric (TG-DTA) curves reveal enhanced stability to thermal degradation of the dual NaClO/UV process modified starch up to 20%. Differential scanning calorimetry (DSC) shows a strong decrease in gelatinization enthalpy due to the action of the UV-rays coupled with the sodium hypochlorite (NaClO) solution. The H2O2/UV modified starch has a high final viscosity while the NaClO/UV starch pastes have a low tendency to recrystallize. Furthermore, structural analysis using an X-ray diffractometer and scanning electron microscopy (SEM) show crystallinity patterns of type A starch and that the shape of the starch granules are unaltered following the modification processes. Color parameters show a strong increase in the L value (for whiteness) for the NaClO/UV treated samples. The modified starches demonstrate improved physicochemical properties which are suitable for several industrial applications including as stabilizers for frozen bakery products, ... Mostrar Tudo |
Palavras-Chave: |
Chlorine compounds; Dual modification; Proximate compositions; Sodium hypochlorites; Ultraviolet light irradiation; X ray diffractometers. |
Thesagro: |
Amido; Pinhão. |
Thesaurus NAL: |
Differential scanning calorimetry; Functional properties; Gelation; Oxidation; Pasting properties; Physicochemical properties; Scanning electron microscopy. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02777naa a2200385 a 4500 001 2106821 005 2019-10-30 008 2019 bl uuuu u00u1 u #d 024 7 $a10.1002/star.201800140$2DOI 100 1 $aHORNUNG, P. S. 245 $aNovel oxidized and UV-irradiated Araucaria angustifolia pine seed starch for enhanced functional properties.$h[electronic resource] 260 $c2019 520 $aStarch is an important raw material for industrial processes. Therefore, an investigation of new sources of starch and starch modification methods is necessary. The dual oxidation effect on the properties of the native pine seed starch is investigated. Native starch is extracted from pine seeds and its proximate composition determined. The starch is then subjected to a dual oxidation process in standard NaClO or H2O2 solutions (0.2; 0.5; 0.8 mol L1) and simultaneous exposure to ultraviolet light irradiation (UVC ? ¼ 254 nm). Thermogravimetric (TG-DTA) curves reveal enhanced stability to thermal degradation of the dual NaClO/UV process modified starch up to 20%. Differential scanning calorimetry (DSC) shows a strong decrease in gelatinization enthalpy due to the action of the UV-rays coupled with the sodium hypochlorite (NaClO) solution. The H2O2/UV modified starch has a high final viscosity while the NaClO/UV starch pastes have a low tendency to recrystallize. Furthermore, structural analysis using an X-ray diffractometer and scanning electron microscopy (SEM) show crystallinity patterns of type A starch and that the shape of the starch granules are unaltered following the modification processes. Color parameters show a strong increase in the L value (for whiteness) for the NaClO/UV treated samples. The modified starches demonstrate improved physicochemical properties which are suitable for several industrial applications including as stabilizers for frozen bakery products, whitening agents for paper products, and tableting agents for cosmetic and pharmaceuticals products. 650 $aDifferential scanning calorimetry 650 $aFunctional properties 650 $aGelation 650 $aOxidation 650 $aPasting properties 650 $aPhysicochemical properties 650 $aScanning electron microscopy 650 $aAmido 650 $aPinhão 653 $aChlorine compounds 653 $aDual modification 653 $aProximate compositions 653 $aSodium hypochlorites 653 $aUltraviolet light irradiation 653 $aX ray diffractometers 700 1 $aLAZZAROTTO, S. R. da S. 700 1 $aBELLETTINI, M. B. 700 1 $aLAZZAROTTO, M. 700 1 $aBETA, T. 700 1 $aRIBANI, R. H. 700 1 $aSCHNITZLER, E. 773 $tStarch$gv. 71, n. 3/4, 1800140, March 2019. 10 p.
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