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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
05/07/2023 |
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Data da última atualização: |
15/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GIRALDI, T. R.; COSTA, B. C. da; SILVA, M. M.; SANTOS, A. L. dos; PARIS, E. C.; FIGUEIREDO, A. T. de; RODRIGUEZ, R. P. |
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Afiliação: |
ELAINE CRISTINA PARIS, CNPDIA. |
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Título: |
Nb2 O5 Pellets with Inactive Biomass for Adsorption of Mn2+ Ions: Kinetic, Isothermal and Reuse Study. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Materials Research, v. 26 (suppl. 1), e20220553, 2023. |
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Páginas: |
9 p. |
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DOI: |
https://doi.org/10.1590/1980-5373-MR-2022-0553 |
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Idioma: |
Inglês |
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Conteúdo: |
This paper aims to explore the production of porous Nb2 O5 pellets by pressing and adding anaerobic biomass (sludge) in order to evaluate the microstructure porosity. The thermal treatment temperature of the pellets varied between 300 ºC and 900 ºC. Their structural, morphological, and physical properties were measured, and the adsorption potential of Mn2+ and their reuse were evaluated. All samples had a monoclinic phase. Density average values of samples pressed using sludge ranged between 2.45 and 2.52 g.cm-3, while the one obtained without sludge pressing achieved higher values of around 2.72 g.cm-3. All samples presented high porosity values after the heat treatment (above 40%), which confirms the efficiency of sludge as a means to enhance porosity. These pellets were used for Mn2+ ions adsorption in aqueous medium. The Langmuir isotherm model was the one that achieved the best goodness-of-fit. In kinetic studies, the adsorption reaction was in accordance with second-order kinetics. Adsorbents in the form of pellets are environmentally friendly on account of their significant reuse and recycling potential. However, the particulate matter might become an environmental liability and incur high treatment costs. The samples proved to be reusable, promoting the adsorption of 67% of the Mn2+ after the fifth reuse cycle. |
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Palavras-Chave: |
Mn2+; Nb2 O5; Reuse. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154809/1/P-Nb2-pellets-with-inactive-biomass-for-adsorption.pdf
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Marc: |
LEADER 02095naa a2200253 a 4500
001 2154809
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/1980-5373-MR-2022-0553$2DOI
100 1 $aGIRALDI, T. R.
245 $aNb2 O5 Pellets with Inactive Biomass for Adsorption of Mn2+ Ions$bKinetic, Isothermal and Reuse Study.$h[electronic resource]
260 $c2023
300 $a9 p.
520 $aThis paper aims to explore the production of porous Nb2 O5 pellets by pressing and adding anaerobic biomass (sludge) in order to evaluate the microstructure porosity. The thermal treatment temperature of the pellets varied between 300 ºC and 900 ºC. Their structural, morphological, and physical properties were measured, and the adsorption potential of Mn2+ and their reuse were evaluated. All samples had a monoclinic phase. Density average values of samples pressed using sludge ranged between 2.45 and 2.52 g.cm-3, while the one obtained without sludge pressing achieved higher values of around 2.72 g.cm-3. All samples presented high porosity values after the heat treatment (above 40%), which confirms the efficiency of sludge as a means to enhance porosity. These pellets were used for Mn2+ ions adsorption in aqueous medium. The Langmuir isotherm model was the one that achieved the best goodness-of-fit. In kinetic studies, the adsorption reaction was in accordance with second-order kinetics. Adsorbents in the form of pellets are environmentally friendly on account of their significant reuse and recycling potential. However, the particulate matter might become an environmental liability and incur high treatment costs. The samples proved to be reusable, promoting the adsorption of 67% of the Mn2+ after the fifth reuse cycle.
653 $aMn2+
653 $aNb2 O5
653 $aReuse
700 1 $aCOSTA, B. C. da
700 1 $aSILVA, M. M.
700 1 $aSANTOS, A. L. dos
700 1 $aPARIS, E. C.
700 1 $aFIGUEIREDO, A. T. de
700 1 $aRODRIGUEZ, R. P.
773 $tMaterials Research$gv. 26 (suppl. 1), e20220553, 2023.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
21/12/2011 |
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Data da última atualização: |
05/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
FOYE-JACKSON, O. T.; LONG, J. A.; BAKST, M. R.; BLOMBERG, L. A.; AKUFFO, V. G.; SILVA, M. V. G. B.; GUTHRIE, H. D.; McMURTRY, J. P. |
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Afiliação: |
O. T. FOYE-JACKSON, USDA; J. A. LONG, USDA; M. R. BAKST, USDA; L. A. BLOMBERG, USDA; V. G. AKUFFO, USDA; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; H. D. GUTHRIE, USDA; J. P. McMURTRY, USDA. |
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Título: |
Oviductal expression of avidin, avidin-related protein-2, and progesterone receptor in turkey hens in relation to sperm storage: effects of oviduct tissue type, sperm presence, and turkey line. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Poultry Science, v. 90, n. 7, p. 1539-1547, 2011. |
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DOI: |
https://doi.org/10.3382/ps.2010-01159 |
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Idioma: |
Inglês |
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Conteúdo: |
The sperm storage tubules (SST) of the turkey hen, which are located in the uterovaginal junction (UVJ) of the oviduct, maintain viable sperm for up to 10 wk after a single insemination. The mechanisms of this in vivo sperm storage are poorly understood. Our objective was to evaluate mRNA and protein expression of avidin and 2 avidin-associated factors, avidin-related protein-2 (AVR2) and progesterone receptor, in the oviducts of 2 different lines to determine the extent to which they were sperm responsive and tissue specific. At 38 wk of age, Hybrid Grade Maker and Converter turkey hens were artificially inseminated with diluted semen (AI) or were sham-inseminated with extender alone (SI). Forty-eight hours after insemination, total RNA was extracted from the UVJ epithelium (containing SST) and vaginal epithelium (VGE) of SI and AI hens. Real time-polymerase chain reaction data showed a clear tissue region-specific effect on gene expression in the turkey hen oviduct, with much greater (P < 0.0001) expression in the UVJ compared with VGE region for avidin and AVR2 mRNA in both lines and for progesterone receptor mRNA in the Converter line. In contrast to real-time PCR data, in situ hybridization of SI and AI tissues showed that the presence of sperm increased avidin mRNA in the SST and UVJ surface epithelium in the Converter hens. Immunohistochemistry confirmed the presence of avidin protein in the epithelium of the UVJ in both lines; however, whereas avidin protein was localized in the SST of SI-Grade Maker hens, this protein was not detected in the SST of Converter hens. The upregulation of avidin and AVR2 mRNA within the sperm storage region indicates the involvement of avidin, and perhaps avidin analogs, in the sustained storage of sperm in the SST, possibly through the binding of biotin to avidin. The absence of avidin protein in the SST and VGE of Converter hens in the presence of increased mRNA may indicate a rapid turnover of protein. MenosThe sperm storage tubules (SST) of the turkey hen, which are located in the uterovaginal junction (UVJ) of the oviduct, maintain viable sperm for up to 10 wk after a single insemination. The mechanisms of this in vivo sperm storage are poorly understood. Our objective was to evaluate mRNA and protein expression of avidin and 2 avidin-associated factors, avidin-related protein-2 (AVR2) and progesterone receptor, in the oviducts of 2 different lines to determine the extent to which they were sperm responsive and tissue specific. At 38 wk of age, Hybrid Grade Maker and Converter turkey hens were artificially inseminated with diluted semen (AI) or were sham-inseminated with extender alone (SI). Forty-eight hours after insemination, total RNA was extracted from the UVJ epithelium (containing SST) and vaginal epithelium (VGE) of SI and AI hens. Real time-polymerase chain reaction data showed a clear tissue region-specific effect on gene expression in the turkey hen oviduct, with much greater (P < 0.0001) expression in the UVJ compared with VGE region for avidin and AVR2 mRNA in both lines and for progesterone receptor mRNA in the Converter line. In contrast to real-time PCR data, in situ hybridization of SI and AI tissues showed that the presence of sperm increased avidin mRNA in the SST and UVJ surface epithelium in the Converter hens. Immunohistochemistry confirmed the presence of avidin protein in the epithelium of the UVJ in both lines; however, whereas avidin protein was loca... Mostrar Tudo |
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Palavras-Chave: |
Avidin expression; Sperm storage tubule; Turkey hen; Vaginal epithelium. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02882naa a2200265 a 4500
001 1910559
005 2024-02-05
008 2011 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3382/ps.2010-01159$2DOI
100 1 $aFOYE-JACKSON, O. T.
245 $aOviductal expression of avidin, avidin-related protein-2, and progesterone receptor in turkey hens in relation to sperm storage$beffects of oviduct tissue type, sperm presence, and turkey line.$h[electronic resource]
260 $c2011
520 $aThe sperm storage tubules (SST) of the turkey hen, which are located in the uterovaginal junction (UVJ) of the oviduct, maintain viable sperm for up to 10 wk after a single insemination. The mechanisms of this in vivo sperm storage are poorly understood. Our objective was to evaluate mRNA and protein expression of avidin and 2 avidin-associated factors, avidin-related protein-2 (AVR2) and progesterone receptor, in the oviducts of 2 different lines to determine the extent to which they were sperm responsive and tissue specific. At 38 wk of age, Hybrid Grade Maker and Converter turkey hens were artificially inseminated with diluted semen (AI) or were sham-inseminated with extender alone (SI). Forty-eight hours after insemination, total RNA was extracted from the UVJ epithelium (containing SST) and vaginal epithelium (VGE) of SI and AI hens. Real time-polymerase chain reaction data showed a clear tissue region-specific effect on gene expression in the turkey hen oviduct, with much greater (P < 0.0001) expression in the UVJ compared with VGE region for avidin and AVR2 mRNA in both lines and for progesterone receptor mRNA in the Converter line. In contrast to real-time PCR data, in situ hybridization of SI and AI tissues showed that the presence of sperm increased avidin mRNA in the SST and UVJ surface epithelium in the Converter hens. Immunohistochemistry confirmed the presence of avidin protein in the epithelium of the UVJ in both lines; however, whereas avidin protein was localized in the SST of SI-Grade Maker hens, this protein was not detected in the SST of Converter hens. The upregulation of avidin and AVR2 mRNA within the sperm storage region indicates the involvement of avidin, and perhaps avidin analogs, in the sustained storage of sperm in the SST, possibly through the binding of biotin to avidin. The absence of avidin protein in the SST and VGE of Converter hens in the presence of increased mRNA may indicate a rapid turnover of protein.
653 $aAvidin expression
653 $aSperm storage tubule
653 $aTurkey hen
653 $aVaginal epithelium
700 1 $aLONG, J. A.
700 1 $aBAKST, M. R.
700 1 $aBLOMBERG, L. A.
700 1 $aAKUFFO, V. G.
700 1 $aSILVA, M. V. G. B.
700 1 $aGUTHRIE, H. D.
700 1 $aMcMURTRY, J. P.
773 $tPoultry Science$gv. 90, n. 7, p. 1539-1547, 2011.
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