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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
03/06/2013 |
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Data da última atualização: |
27/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARROS, A. H. C.; LIER, Q. de J. van; MAIA, A. de H. N.; SCARPARE, F. V. |
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Afiliação: |
ALEXANDRE HUGO CEZAR BARROS, CNPS; QUIRIJN DE JONG VAN LIER, CENA/USP; ALINE DE HOLANDA NUNES MAIA, CNPMA; FÁBIO VALE SCARPARE, CTEB/CNPEM. |
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Título: |
Pedotransfer functions to estimate water retention parameters of soils in notheastern Brazil. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 37, n. 2, p. 379-391, mar./abr. 2013. |
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Idioma: |
Português |
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Conteúdo: |
Pedotransfer functions (PTF) were developed to estimate the parameters (a, n, qr and qs) of the van Genuchten model (1980) to describe soil water retention curves. The data came from various sources, mainly from studies conducted by universities in Northeast Brazil, by the Brazilian Agricultural Research Corporation (Embrapa) and by a corporation for the development of the São Francisco and Parnaíba river basins (Codevasf), totaling 786 retention curves, which were divided into two data sets: 85 % for the development of PTFs, and 15 % for testing and validation, considered independent data. Aside from the development of general PTFs for all soils together, specific PTFs were developed for the soil classes Ultisols, Oxisols, Entisols, and Alfisols by multiple regression techniques, using a stepwise procedure (forward and backward) to select the best predictors. Two types of PTFs were developed: the first included all predictors (soil density, proportions of sand, silt, clay, and organic matter), and the second only the proportions of sand, silt and clay. The evaluation of adequacy of the PTFs was based on the correlation coefficient (R) and Willmott index (d). To evaluate the PTF for the moisture content at specific pressure heads, we used the root mean square error (RMSE). The PTFpredicted retention curve is relatively poor, except for the residual water content. The inclusion of organic matter as a PTF predictor improved the prediction of parameter a of van Genuchten. The performance of soil-class-specific PTFs was not better than of the general PTF. Except for the water content of saturated soil estimated by particle size distribution, the tested models for water content prediction at specific pressure heads proved satisfactory. Predictions of water content at pressure heads more negative than -0.6 m, using a PTF consideringparticle size distribution, are only slightly lower than those obtained by PTFs including bulk density and organic matter content. MenosPedotransfer functions (PTF) were developed to estimate the parameters (a, n, qr and qs) of the van Genuchten model (1980) to describe soil water retention curves. The data came from various sources, mainly from studies conducted by universities in Northeast Brazil, by the Brazilian Agricultural Research Corporation (Embrapa) and by a corporation for the development of the São Francisco and Parnaíba river basins (Codevasf), totaling 786 retention curves, which were divided into two data sets: 85 % for the development of PTFs, and 15 % for testing and validation, considered independent data. Aside from the development of general PTFs for all soils together, specific PTFs were developed for the soil classes Ultisols, Oxisols, Entisols, and Alfisols by multiple regression techniques, using a stepwise procedure (forward and backward) to select the best predictors. Two types of PTFs were developed: the first included all predictors (soil density, proportions of sand, silt, clay, and organic matter), and the second only the proportions of sand, silt and clay. The evaluation of adequacy of the PTFs was based on the correlation coefficient (R) and Willmott index (d). To evaluate the PTF for the moisture content at specific pressure heads, we used the root mean square error (RMSE). The PTFpredicted retention curve is relatively poor, except for the residual water content. The inclusion of organic matter as a PTF predictor improved the prediction of parameter a of van Genuchten. The p... Mostrar Tudo |
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Palavras-Chave: |
Soil water retention curve. |
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Thesaurus Nal: |
tropical soils. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/83676/1/V37N2a09.pdf
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Marc: |
LEADER 02588naa a2200181 a 4500
001 1959172
005 2022-04-27
008 2013 bl uuuu u00u1 u #d
100 1 $aBARROS, A. H. C.
245 $aPedotransfer functions to estimate water retention parameters of soils in notheastern Brazil.$h[electronic resource]
260 $c2013
520 $aPedotransfer functions (PTF) were developed to estimate the parameters (a, n, qr and qs) of the van Genuchten model (1980) to describe soil water retention curves. The data came from various sources, mainly from studies conducted by universities in Northeast Brazil, by the Brazilian Agricultural Research Corporation (Embrapa) and by a corporation for the development of the São Francisco and Parnaíba river basins (Codevasf), totaling 786 retention curves, which were divided into two data sets: 85 % for the development of PTFs, and 15 % for testing and validation, considered independent data. Aside from the development of general PTFs for all soils together, specific PTFs were developed for the soil classes Ultisols, Oxisols, Entisols, and Alfisols by multiple regression techniques, using a stepwise procedure (forward and backward) to select the best predictors. Two types of PTFs were developed: the first included all predictors (soil density, proportions of sand, silt, clay, and organic matter), and the second only the proportions of sand, silt and clay. The evaluation of adequacy of the PTFs was based on the correlation coefficient (R) and Willmott index (d). To evaluate the PTF for the moisture content at specific pressure heads, we used the root mean square error (RMSE). The PTFpredicted retention curve is relatively poor, except for the residual water content. The inclusion of organic matter as a PTF predictor improved the prediction of parameter a of van Genuchten. The performance of soil-class-specific PTFs was not better than of the general PTF. Except for the water content of saturated soil estimated by particle size distribution, the tested models for water content prediction at specific pressure heads proved satisfactory. Predictions of water content at pressure heads more negative than -0.6 m, using a PTF consideringparticle size distribution, are only slightly lower than those obtained by PTFs including bulk density and organic matter content.
650 $atropical soils
653 $aSoil water retention curve
700 1 $aLIER, Q. de J. van
700 1 $aMAIA, A. de H. N.
700 1 $aSCARPARE, F. V.
773 $tRevista Brasileira de Ciência do Solo$gv. 37, n. 2, p. 379-391, mar./abr. 2013.
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Registro original: |
Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Unidades Centrais. |
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Data corrente: |
15/09/1998 |
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Data da última atualização: |
08/09/2020 |
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Autoria: |
LAU, H. D.; FAN, L. C. R.; FIALHO, S. A. G.; PIPPI, N. L.; RAISER, A. G. |
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Afiliação: |
HUGO DIDONET LAU, CPATU; LUIZ CARLOS RIBEIRO FAN, UFSM; SÉRGIO AMARO GUIMARÂES FIALHO, UFSM; NEY LUIS PIPPI, UFSM; ALCEU GASPAR RAISER, UFSM. |
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Título: |
Efeitos adversos da levomepromazina em ovinos. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 18, n. 2, p. 181-185, fev. 1983. |
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Idioma: |
Português |
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Conteúdo: |
RESUMO - Variações do hemograma, frequência cardiorrespiratória, temperatura retal e movimentos ruminatórios foram estudados, antes e após a aplicação de levomepromazina em oito ovinos separados em dois lotes de igual numero. O primeiro lote recebeu a droga por via intramuscular (2 mg/kg) e o segundo pela via intravenosa (1 mg/kg). As amostras sanguíneas e os sintomas clínicos foram colhidos antes e aos 15, 30 e 60 minutos após a aplicação do fármaco. Em todos os animais evidenciou-se a diminuição do numero de eritrócitos (8,57 - 7,32 milhões/mm3) e dos valores do hematócrito (32,37 - 27,12%), eosinopenia (708,75 - 452,50 mm3) e neutrofilia (2.337,50 - 3.345,00 mm3). A taxa de leucócitos e linfócitos permaneceu praticamente constante. A frequência cardíaca e respiratória diminuiu nos primeiros 15 minutos (130-118 bat./min. e 97,50 - 49,87 mov./min.), aumentando logo após (132-143 bat./min. e 60,00 - 68,75 mov./min.). A temperatura retal e os movimentos de rúmen permaneceram sem alteração. ABSTRACT - Change of hemogram, cardiopulmonary frequency, rectal temperature and rurnen motility was studied prior and post application of levomepromazine in eight sheep divided into two groups of equal number. The first group received intramuscularly (2 mg/kg) and the second intravenously (1 mg/kg). The blood samples and the clinical symptoms were gathered prior. 15, 30 and 60 minutes post the drug application. in ali animais a decrease of erythrocyte number (8.57 - 7.32 million/mm3 ) and haematocrit values (32.37 - 27.12%) was observed. Eosinopenia (708.75 -452.50 mm 3) and noutrophilia (2.337,50 - 3,345.00 mm 3 ) were aiso observed. The leukocytes and lymphocytes counts remained constant. The cardiac and pulmonary frequency decreased 15 minutes after the drug application (130 - 118 bat./min and 97.60 - 49.87 mov./mini. After this time increase (132- 143 bat./min. and 60.00-68.75 mov./min.) was observed. The rectal temperature and rumem motility rate remained practically constant during the experiment. MenosRESUMO - Variações do hemograma, frequência cardiorrespiratória, temperatura retal e movimentos ruminatórios foram estudados, antes e após a aplicação de levomepromazina em oito ovinos separados em dois lotes de igual numero. O primeiro lote recebeu a droga por via intramuscular (2 mg/kg) e o segundo pela via intravenosa (1 mg/kg). As amostras sanguíneas e os sintomas clínicos foram colhidos antes e aos 15, 30 e 60 minutos após a aplicação do fármaco. Em todos os animais evidenciou-se a diminuição do numero de eritrócitos (8,57 - 7,32 milhões/mm3) e dos valores do hematócrito (32,37 - 27,12%), eosinopenia (708,75 - 452,50 mm3) e neutrofilia (2.337,50 - 3.345,00 mm3). A taxa de leucócitos e linfócitos permaneceu praticamente constante. A frequência cardíaca e respiratória diminuiu nos primeiros 15 minutos (130-118 bat./min. e 97,50 - 49,87 mov./min.), aumentando logo após (132-143 bat./min. e 60,00 - 68,75 mov./min.). A temperatura retal e os movimentos de rúmen permaneceram sem alteração. ABSTRACT - Change of hemogram, cardiopulmonary frequency, rectal temperature and rurnen motility was studied prior and post application of levomepromazine in eight sheep divided into two groups of equal number. The first group received intramuscularly (2 mg/kg) and the second intravenously (1 mg/kg). The blood samples and the clinical symptoms were gathered prior. 15, 30 and 60 minutes post the drug application. in ali animais a decrease of erythrocyte number (8.57 - 7.32 million/mm3 ) and ... Mostrar Tudo |
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Palavras-Chave: |
Cariopulmonary frequency; Frequência cardiorrespiratória; haematocrit; Hematócrito; Hemogram; Rectal temperature; Temperatura retal. |
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Thesagro: |
Hemograma; Ovino. |
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Thesaurus NAL: |
Sheep. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/215825/1/Efeitos-adversos-levomepromazina.pdf
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Marc: |
LEADER 02836naa a2200289 a 4500
001 2124796
005 2020-09-08
008 1983 bl uuuu u00u1 u #d
100 1 $aLAU, H. D.
245 $aEfeitos adversos da levomepromazina em ovinos.
260 $c1983
520 $aRESUMO - Variações do hemograma, frequência cardiorrespiratória, temperatura retal e movimentos ruminatórios foram estudados, antes e após a aplicação de levomepromazina em oito ovinos separados em dois lotes de igual numero. O primeiro lote recebeu a droga por via intramuscular (2 mg/kg) e o segundo pela via intravenosa (1 mg/kg). As amostras sanguíneas e os sintomas clínicos foram colhidos antes e aos 15, 30 e 60 minutos após a aplicação do fármaco. Em todos os animais evidenciou-se a diminuição do numero de eritrócitos (8,57 - 7,32 milhões/mm3) e dos valores do hematócrito (32,37 - 27,12%), eosinopenia (708,75 - 452,50 mm3) e neutrofilia (2.337,50 - 3.345,00 mm3). A taxa de leucócitos e linfócitos permaneceu praticamente constante. A frequência cardíaca e respiratória diminuiu nos primeiros 15 minutos (130-118 bat./min. e 97,50 - 49,87 mov./min.), aumentando logo após (132-143 bat./min. e 60,00 - 68,75 mov./min.). A temperatura retal e os movimentos de rúmen permaneceram sem alteração. ABSTRACT - Change of hemogram, cardiopulmonary frequency, rectal temperature and rurnen motility was studied prior and post application of levomepromazine in eight sheep divided into two groups of equal number. The first group received intramuscularly (2 mg/kg) and the second intravenously (1 mg/kg). The blood samples and the clinical symptoms were gathered prior. 15, 30 and 60 minutes post the drug application. in ali animais a decrease of erythrocyte number (8.57 - 7.32 million/mm3 ) and haematocrit values (32.37 - 27.12%) was observed. Eosinopenia (708.75 -452.50 mm 3) and noutrophilia (2.337,50 - 3,345.00 mm 3 ) were aiso observed. The leukocytes and lymphocytes counts remained constant. The cardiac and pulmonary frequency decreased 15 minutes after the drug application (130 - 118 bat./min and 97.60 - 49.87 mov./mini. After this time increase (132- 143 bat./min. and 60.00-68.75 mov./min.) was observed. The rectal temperature and rumem motility rate remained practically constant during the experiment.
650 $aSheep
650 $aHemograma
650 $aOvino
653 $aCariopulmonary frequency
653 $aFrequência cardiorrespiratória
653 $ahaematocrit
653 $aHematócrito
653 $aHemogram
653 $aRectal temperature
653 $aTemperatura retal
700 1 $aFAN, L. C. R.
700 1 $aFIALHO, S. A. G.
700 1 $aPIPPI, N. L.
700 1 $aRAISER, A. G.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 18, n. 2, p. 181-185, fev. 1983.
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Embrapa Amazônia Oriental (CPATU) |
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