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| PARANHOS,B.A.J; WALDER,J.M.M; CHAUD NETO,J. |
| Africanized honeybees from five colonies were marked with P-32 and taken to an apple grove for a flight behavior study. The method used to determine the flight range was to put out an array of tagged trees in a cross pattern with the colonies arranged in the center point of a 0.8 ha test area. The tagged trees were located 10 meters apart in the 4 rows of 50 meters each, arranged according to the North, South, East, and West directions. Bees were collected while visiting the tagged tree flowers twice a day, during a ten-day period. The number of honeybees marked decreased in relation to the distance from the hives. Analysis of variance showed that a linear regression was highly significant to describe the process. Geographic directions did not affect the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Honeybees; Flight range; Radiophosphorus. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161997000100012 |
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| DOMARCO,R.E; SPOTO,M.H.F; WALDER,J.M.M; BLUMER,L; MATRAIA,C. |
| O efeito da radiação gama e baixas temperaturas foi estudado no crescimento de Saccharomyces cerevisiae em suco de laranja. O suco concentrado de laranja (65°Brix) foi diluído a 10,5°Brix e inoculado com levedura comercial. As amostras foram irradiadas com doses de 1,0, 1,5, 2,0, 2,5, 5,0 e 7,5 kGy (Cobalto 60), a uma taxa de dose de 2,83 kGy/h. Todas as amostras foram armazenadas a 0°, 5° e 25°C, por 1, 7, 14, 21, 30, 60 e 90 dias. O tratamento combinado de 1 kGy e refrigeração a 0°C foi efetivo para a conservação do suco de laranja por 90 dias de armazenamento. A dose de 2,5 kGy foi suficiente para conservar o suco de laranja por 90 dias de armazenamento a 5°C. A 25°C, somente as doses mais altas (5 e 7,5 kGy) foram efetivas no controle do crescimento da... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Irradiação; Suco de laranja; Saccharomyces cerevisiae. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161996000100003 |
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