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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
04/12/2017 |
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Data da última atualização: |
18/12/2017 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
CADEMARTORI, P. H. G. de; NISGOSKI, S.; BOLZON DE MUNIZ, G. I.; MAGALHAES, W. L. E. |
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Afiliação: |
Pedro Henrique Gonzalez de Cademartori, Pós-graduando da UFPR; Silvana Nisgoski, UFPR; Graciela Ines Bolzon de Muniz, UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Molhabilidade superficial de lâminas de madeira tratadas por plasma frio e seu efeito de envelhecimento. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 9., 2017, São Carlos, SP. Anais ... São Carlos: Embrapa Instrumentação, 2017. |
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Páginas: |
p. 430-433. |
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Idioma: |
Português |
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Conteúdo: |
O presente estudo investigou o efeito do plasma frio na molhabilidade das lâminas de madeira de red oak, white oak e maple tratadas sob diferentes condições em um reator de radiofrequência a baixa pressão. Parâmetros de molhabilidade foram determinados, o efeito do envelhecimento foi monitorado durante 30 dias e a adesão revestimento/madeira foi determinada por resistência a tração pelo método pull-off. Os principais resultados mostraram absorção total e espalhamento das gotículas de água em todas as lâminas de madeira. O aumento do ângulo de contato aparente em função do tempo de exposição ao ambiente, especialmente para as lâminas de red oak, confirmou a perda parcial do efeito do plasma e a recuperação da condição natural das lâminas. O aumento da adesão revestimento/madeira para as lâminas d white oak e maple foi parcialmente suportada pelo aumento da molhabilidade. |
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Palavras-Chave: |
Adesão de superfície; Aging; Ângulo de contato; Descarga luminescente; Glow discharge; Surface adhesion; Surface treatment; Tratamento de superfície. |
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Thesagro: |
Envelhecimento. |
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Thesaurus Nal: |
Contact angle. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/1081397/1/2017AACWashingtonWNAAMolhabilidade1.pdf
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Marc: |
LEADER 01865nam a2200277 a 4500
001 2081397
005 2017-12-18
008 2017 bl uuuu u00u1 u #d
100 1 $aCADEMARTORI, P. H. G. de
245 $aMolhabilidade superficial de lâminas de madeira tratadas por plasma frio e seu efeito de envelhecimento.$h[electronic resource]
260 $aIn: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 9., 2017, São Carlos, SP. Anais ... São Carlos: Embrapa Instrumentação$c2017
300 $ap. 430-433.
520 $aO presente estudo investigou o efeito do plasma frio na molhabilidade das lâminas de madeira de red oak, white oak e maple tratadas sob diferentes condições em um reator de radiofrequência a baixa pressão. Parâmetros de molhabilidade foram determinados, o efeito do envelhecimento foi monitorado durante 30 dias e a adesão revestimento/madeira foi determinada por resistência a tração pelo método pull-off. Os principais resultados mostraram absorção total e espalhamento das gotículas de água em todas as lâminas de madeira. O aumento do ângulo de contato aparente em função do tempo de exposição ao ambiente, especialmente para as lâminas de red oak, confirmou a perda parcial do efeito do plasma e a recuperação da condição natural das lâminas. O aumento da adesão revestimento/madeira para as lâminas d white oak e maple foi parcialmente suportada pelo aumento da molhabilidade.
650 $aContact angle
650 $aEnvelhecimento
653 $aAdesão de superfície
653 $aAging
653 $aÂngulo de contato
653 $aDescarga luminescente
653 $aGlow discharge
653 $aSurface adhesion
653 $aSurface treatment
653 $aTratamento de superfície
700 1 $aNISGOSKI, S.
700 1 $aBOLZON DE MUNIZ, G. I.
700 1 $aMAGALHAES, W. L. E.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
17/09/1998 |
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Data da última atualização: |
08/09/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ELOY, A. M. X.; RODWAY, R. G. |
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Afiliação: |
ANGELA MARIA XAVIER ELOY, CNPC. |
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Título: |
Effect of isolation stress on beta-endorphin and LH levels in ovariectomized ewes. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Animal Production, v. 58, n. 3, p. 483, 1994. Abstract 220. |
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Idioma: |
Inglês |
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Notas: |
Abstract presented in the MEETING OF THE BRITISH SOCIETY OF ANIMAL PRODUCTION, 109., 1994, Scarborough. Proceedings. |
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Conteúdo: |
Abstract: The objective of this experiment was to study the effect of the psychological stress of isolation on luteinizing hormone (LH) secretion in ovariectomized ewes. Sheep were initially penned in pairs. Isolation was accomplished by removing the non-experimental sheep to another room. The trials lasted from 10.00 untii 18.00 h. ln the first stage (from 10.00 until 14.00 h) the animals were alIowed to have visual contactwith their partners, while in the second stage (14.00 until 18.00 h) the animals were isolated. Blood samples were taken at 15-min intervals throughout the experiment from jugular catheters implanted the previous day. Samples were analysed for glucose, (Betha-endorphin and LH. The isolation stress caused a significant (P < 0.05) elevation of (Betha-endorphin (316 (s.e. 11-4) v. 381 (s.e. 20.7) ng/l) but did not alter significantly (P> 0.05) the mean LH levels (4.23 (s.e. 0.14) v. 3.92 (s.e. 0.13) ug/1). However LH secretion was seen to dec1ine rapidly after the onset of isolation and then to recover. When the data were analysed in 2-h time periods the LH levels were significantly (P < 0.05) reduced betwen the 2 h before (4.70 (s.e. 0.2) ug/l) and after (3.90 (s.e. 0.2) ug/l) isolation. LH pplse analysis performed using PULSAR showed that the pulse frequency and pulse amplitude were reduced after isolation (3.8 (s.e. 1.2) v. 3.3 (s.e. 1.1) pulses per 4 h) and (2.6 (s.e. 1.5) v. 1.6 (s.e. 1.0) ug/I), respectively. Glucose levels showed significant (P < 0.05) elevation (2.7 (s.e. 0.1) v. 3.2 (s.e. 0.1) nmol/1) during isolation stress. We can conclude that a psychological stress such as isolation in a species such as the sheep stimulates opioid peptides release and inhibits LH secretion. Whether these two events are causally linked remains to be clarified. MenosAbstract: The objective of this experiment was to study the effect of the psychological stress of isolation on luteinizing hormone (LH) secretion in ovariectomized ewes. Sheep were initially penned in pairs. Isolation was accomplished by removing the non-experimental sheep to another room. The trials lasted from 10.00 untii 18.00 h. ln the first stage (from 10.00 until 14.00 h) the animals were alIowed to have visual contactwith their partners, while in the second stage (14.00 until 18.00 h) the animals were isolated. Blood samples were taken at 15-min intervals throughout the experiment from jugular catheters implanted the previous day. Samples were analysed for glucose, (Betha-endorphin and LH. The isolation stress caused a significant (P < 0.05) elevation of (Betha-endorphin (316 (s.e. 11-4) v. 381 (s.e. 20.7) ng/l) but did not alter significantly (P> 0.05) the mean LH levels (4.23 (s.e. 0.14) v. 3.92 (s.e. 0.13) ug/1). However LH secretion was seen to dec1ine rapidly after the onset of isolation and then to recover. When the data were analysed in 2-h time periods the LH levels were significantly (P < 0.05) reduced betwen the 2 h before (4.70 (s.e. 0.2) ug/l) and after (3.90 (s.e. 0.2) ug/l) isolation. LH pplse analysis performed using PULSAR showed that the pulse frequency and pulse amplitude were reduced after isolation (3.8 (s.e. 1.2) v. 3.3 (s.e. 1.1) pulses per 4 h) and (2.6 (s.e. 1.5) v. 1.6 (s.e. 1.0) ug/I), respectively. Glucose levels showed significant (P < 0.05... Mostrar Tudo |
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Palavras-Chave: |
Endorfina; LH. |
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Thesagro: |
Hormônio; Ovino; Stress. |
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Thesaurus NAL: |
Endorphins; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/515008/1/RACEffectofisolation.pdf
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Marc: |
LEADER 02512nam a2200217 a 4500
001 1515008
005 2021-09-08
008 1994 bl uuuu u00u1 u #d
100 1 $aELOY, A. M. X.
245 $aEffect of isolation stress on beta-endorphin and LH levels in ovariectomized ewes.$h[electronic resource]
260 $aAnimal Production, v. 58, n. 3, p. 483, 1994. Abstract 220.$c1994
500 $aAbstract presented in the MEETING OF THE BRITISH SOCIETY OF ANIMAL PRODUCTION, 109., 1994, Scarborough. Proceedings.
520 $aAbstract: The objective of this experiment was to study the effect of the psychological stress of isolation on luteinizing hormone (LH) secretion in ovariectomized ewes. Sheep were initially penned in pairs. Isolation was accomplished by removing the non-experimental sheep to another room. The trials lasted from 10.00 untii 18.00 h. ln the first stage (from 10.00 until 14.00 h) the animals were alIowed to have visual contactwith their partners, while in the second stage (14.00 until 18.00 h) the animals were isolated. Blood samples were taken at 15-min intervals throughout the experiment from jugular catheters implanted the previous day. Samples were analysed for glucose, (Betha-endorphin and LH. The isolation stress caused a significant (P < 0.05) elevation of (Betha-endorphin (316 (s.e. 11-4) v. 381 (s.e. 20.7) ng/l) but did not alter significantly (P> 0.05) the mean LH levels (4.23 (s.e. 0.14) v. 3.92 (s.e. 0.13) ug/1). However LH secretion was seen to dec1ine rapidly after the onset of isolation and then to recover. When the data were analysed in 2-h time periods the LH levels were significantly (P < 0.05) reduced betwen the 2 h before (4.70 (s.e. 0.2) ug/l) and after (3.90 (s.e. 0.2) ug/l) isolation. LH pplse analysis performed using PULSAR showed that the pulse frequency and pulse amplitude were reduced after isolation (3.8 (s.e. 1.2) v. 3.3 (s.e. 1.1) pulses per 4 h) and (2.6 (s.e. 1.5) v. 1.6 (s.e. 1.0) ug/I), respectively. Glucose levels showed significant (P < 0.05) elevation (2.7 (s.e. 0.1) v. 3.2 (s.e. 0.1) nmol/1) during isolation stress. We can conclude that a psychological stress such as isolation in a species such as the sheep stimulates opioid peptides release and inhibits LH secretion. Whether these two events are causally linked remains to be clarified.
650 $aEndorphins
650 $aSheep
650 $aHormônio
650 $aOvino
650 $aStress
653 $aEndorfina
653 $aLH
700 1 $aRODWAY, R. G.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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