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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
28/03/2008 |
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Data da última atualização: |
05/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LILENBAUM, W.; SOUZA, G. N. de; FONSECA, L. de S. |
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Afiliação: |
WALTER LILENBAUM, UFF; GUILHERME NUNES DE SOUZA, CNPGL; LEILA DE SOUZA FONSECA, UFRJ. |
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Título: |
Management factors associated with bovine tuberculosis on dairy herds in Rio de Janeiro, Brazil. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência Veterinária, Niterói, v. 14, n. 2, p. 98-100, 2007. |
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DOI: |
http://dx.doi.org/10.4322/rbcv.2014.242 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT - With the purpose of identifying management factors that may be influencing the prevalence of bovine tuberculosis under tropicalconditions, namely in Rio de Janeiro, Brazil, 1632 cows were tested through the single cervical tuberculin test. A questionnairewas completed for each herd. A total of 207 positive reactions were observed, corresponding to 12.7% of the studied cattle. Themain factors observed that may be influencing the prevalence of bovine tuberculosis on those farms were the absence orreduced veterinary assistance and the herd size. The presence of adequate cattle houses and the highly intensive managementare also considered to be likely to influence the prevalence of the disease. Under tropical conditions, a tuberculosis controlprogram, in addition to the test-and-slaughter control method, should include an investigation of herd management practices totry to identify factors that are likely to influence the prevalence of the disease. RESUMO - Com o objetivo de identificar fatores que possam influenciar a prevalência de tuberculose bovina em condições tropicais, emespecial no Rio de Janeiro, Brasil, 1632 vacas foram testadas pelo teste intra dérmico simples com tuberculina bovina. Um questionário foi completado para cada rebanho. Um total de 207 reações positivas foi observado, o que correspondeu a 12,7%do gado estudado. Os principais fatores observados que podem influenciar na prevalência de tuberculose bovina nestes rebanhos foram a ausência ou reduzida assistência veterinária e o tamanho do rebanho. A presença de estábulos adequados e o manejo intensivo também foram considerados como fatores que podem influenciar na prevalência da enfermidade. Em condições tropicais, um programa de controle da tuberculose deve, além do método de teste-e-abate, incluir uma investigação das práticas de manejo adotadas no rebanho a fim de tentar identificar fatores que possam influenciar na prevalência da enfermidade. MenosABSTRACT - With the purpose of identifying management factors that may be influencing the prevalence of bovine tuberculosis under tropicalconditions, namely in Rio de Janeiro, Brazil, 1632 cows were tested through the single cervical tuberculin test. A questionnairewas completed for each herd. A total of 207 positive reactions were observed, corresponding to 12.7% of the studied cattle. Themain factors observed that may be influencing the prevalence of bovine tuberculosis on those farms were the absence orreduced veterinary assistance and the herd size. The presence of adequate cattle houses and the highly intensive managementare also considered to be likely to influence the prevalence of the disease. Under tropical conditions, a tuberculosis controlprogram, in addition to the test-and-slaughter control method, should include an investigation of herd management practices totry to identify factors that are likely to influence the prevalence of the disease. RESUMO - Com o objetivo de identificar fatores que possam influenciar a prevalência de tuberculose bovina em condições tropicais, emespecial no Rio de Janeiro, Brasil, 1632 vacas foram testadas pelo teste intra dérmico simples com tuberculina bovina. Um questionário foi completado para cada rebanho. Um total de 207 reações positivas foi observado, o que correspondeu a 12,7%do gado estudado. Os principais fatores observados que podem influenciar na prevalência de tuberculose bovina nestes rebanhos foram a ausência ou reduzid... Mostrar Tudo |
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Palavras-Chave: |
Bovine; bovis; M. |
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Thesaurus Nal: |
Brazil; epidemiology; tuberculosis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/595810/1/Management-factors-associated-with-bovine-tuberculosis.pdf
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Marc: |
LEADER 02676naa a2200229 a 4500
001 1595810
005 2022-09-05
008 2007 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4322/rbcv.2014.242$2DOI
100 1 $aLILENBAUM, W.
245 $aManagement factors associated with bovine tuberculosis on dairy herds in Rio de Janeiro, Brazil.$h[electronic resource]
260 $c2007
520 $aABSTRACT - With the purpose of identifying management factors that may be influencing the prevalence of bovine tuberculosis under tropicalconditions, namely in Rio de Janeiro, Brazil, 1632 cows were tested through the single cervical tuberculin test. A questionnairewas completed for each herd. A total of 207 positive reactions were observed, corresponding to 12.7% of the studied cattle. Themain factors observed that may be influencing the prevalence of bovine tuberculosis on those farms were the absence orreduced veterinary assistance and the herd size. The presence of adequate cattle houses and the highly intensive managementare also considered to be likely to influence the prevalence of the disease. Under tropical conditions, a tuberculosis controlprogram, in addition to the test-and-slaughter control method, should include an investigation of herd management practices totry to identify factors that are likely to influence the prevalence of the disease. RESUMO - Com o objetivo de identificar fatores que possam influenciar a prevalência de tuberculose bovina em condições tropicais, emespecial no Rio de Janeiro, Brasil, 1632 vacas foram testadas pelo teste intra dérmico simples com tuberculina bovina. Um questionário foi completado para cada rebanho. Um total de 207 reações positivas foi observado, o que correspondeu a 12,7%do gado estudado. Os principais fatores observados que podem influenciar na prevalência de tuberculose bovina nestes rebanhos foram a ausência ou reduzida assistência veterinária e o tamanho do rebanho. A presença de estábulos adequados e o manejo intensivo também foram considerados como fatores que podem influenciar na prevalência da enfermidade. Em condições tropicais, um programa de controle da tuberculose deve, além do método de teste-e-abate, incluir uma investigação das práticas de manejo adotadas no rebanho a fim de tentar identificar fatores que possam influenciar na prevalência da enfermidade.
650 $aBrazil
650 $aepidemiology
650 $atuberculosis
653 $aBovine
653 $abovis
653 $aM
700 1 $aSOUZA, G. N. de
700 1 $aFONSECA, L. de S.
773 $tRevista Brasileira de Ciência Veterinária, Niterói$gv. 14, n. 2, p. 98-100, 2007.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com cnpae.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
18/02/2021 |
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Data da última atualização: |
20/04/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
JENSEN, A. T.; GAMBETTA, R.; MACHADO, F. |
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Afiliação: |
Alan Thyago Jensen, Universidade de Brasília; ROSSANO GAMBETTA, CNPAE; Fabricio Machado, Universidade de Brasília. |
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Título: |
A versatile route to the synthesis of pressure-sensitive adhesives and polyHIPE-like microparticles: an experimental study on glycerol valorization. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Materials Today Communications, v. 25, 101407, Dec. 2020. |
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DOI: |
https://doi.org/10.1016/j.mtcomm.2020.101407 |
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Idioma: |
Inglês |
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Conteúdo: |
This present work focuses on the synthesis of styrene / n-acylglycerol (n-ACG) (a macromonomer formed by glycerol esterification with acrylic acid catalyzed by methane sulfonic acid) copolymers through suspension polymerization process. The final properties of poly(styrene-co-n-acylglycerol) was strongly dependent on the n-ACG fraction into the polymer chains. The effect of n-ACG on the copolymer properties was evaluated and a huge reduction in both the thermal stability and the Tg values (from 93 °C for polystyrene homopolymer to −22 °C for styrene / n-ACG copolymers synthesized with 20 wt% of n-ACG) was observed when the n-ACG fraction was increased. The variations in the thermal properties were accompanied by drastic morphological changes of the materials, depending essentially on the n-ACG composition as for instance: i) porous spherical particles with polyHIPE-like structures (copolymers containing from 5 to 15 wt% of n-ACG), which indicates that these porous microparticles may be used as support/carries in heterogeneous catalysis, ion exchange resins, and controlled drug delivery, among others; ii) adhesive films containing n-ACG fractions higher than 15 wt%, conferring "tack" features similar to the one observed in for pressure-sensitive adhesives (PSA) evaluated by using a rolling ball test. Mechanical tests also showed that the polymer adhesives have an enormous potential to be used as PSA materials in the adhesive industry. |
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Palavras-Chave: |
Glycerol valorization; PolyHIPE microparticles; Pressure sensitive adhesives (PSA); Suspension polymerization. |
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Thesagro: |
Adesivo; Glicerina; Polimerização. |
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Thesaurus NAL: |
Adhesives; Glycerol; Polymerization. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02405naa a2200277 a 4500
001 2130073
005 2021-04-20
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.mtcomm.2020.101407$2DOI
100 1 $aJENSEN, A. T.
245 $aA versatile route to the synthesis of pressure-sensitive adhesives and polyHIPE-like microparticles$ban experimental study on glycerol valorization.$h[electronic resource]
260 $c2020
520 $aThis present work focuses on the synthesis of styrene / n-acylglycerol (n-ACG) (a macromonomer formed by glycerol esterification with acrylic acid catalyzed by methane sulfonic acid) copolymers through suspension polymerization process. The final properties of poly(styrene-co-n-acylglycerol) was strongly dependent on the n-ACG fraction into the polymer chains. The effect of n-ACG on the copolymer properties was evaluated and a huge reduction in both the thermal stability and the Tg values (from 93 °C for polystyrene homopolymer to −22 °C for styrene / n-ACG copolymers synthesized with 20 wt% of n-ACG) was observed when the n-ACG fraction was increased. The variations in the thermal properties were accompanied by drastic morphological changes of the materials, depending essentially on the n-ACG composition as for instance: i) porous spherical particles with polyHIPE-like structures (copolymers containing from 5 to 15 wt% of n-ACG), which indicates that these porous microparticles may be used as support/carries in heterogeneous catalysis, ion exchange resins, and controlled drug delivery, among others; ii) adhesive films containing n-ACG fractions higher than 15 wt%, conferring "tack" features similar to the one observed in for pressure-sensitive adhesives (PSA) evaluated by using a rolling ball test. Mechanical tests also showed that the polymer adhesives have an enormous potential to be used as PSA materials in the adhesive industry.
650 $aAdhesives
650 $aGlycerol
650 $aPolymerization
650 $aAdesivo
650 $aGlicerina
650 $aPolimerização
653 $aGlycerol valorization
653 $aPolyHIPE microparticles
653 $aPressure sensitive adhesives (PSA)
653 $aSuspension polymerization
700 1 $aGAMBETTA, R.
700 1 $aMACHADO, F.
773 $tMaterials Today Communications$gv. 25, 101407, Dec. 2020.
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Embrapa Agroenergia (CNPAE) |
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