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| Registros recuperados: 27 | |
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| Hallman,Guy J.. |
| Irradiation is a viable quarantine disinfestation treatment which has been studied for 40 years although it has received very little commercial use. Two principal obstacles to commercial application, 1) the fact that insects are not killed immediately, and 2) consumer opposition to irradiation, have been allayed to some extent, but the remaining impediment to large-scale commercial use is development of approved protocols by government regulatory agencies in importing countries. The United States Department of Agriculture has taken the first step by allowing for the movement of a number of quarantined fruits from Hawaii to the rest of the country following irradiation treatment. The measures of efficacy of irradiation disinfestation treatments should be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Arachnida; Gamma radiation; Irradiation; Postharvest disinfestation. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000300001 |
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| Abomohra,Abo El-Fatah; El-Shouny,Wagih; Sharaf,Mona; Abo-Eleneen,Mai. |
| This work aimed to study the influence of gamma radiation on the growth and production of some active substances of Arthrospira platensis. Biomass production was significantly inhibited (p ≤ 0.05) by 21 and 34%, with respect to the control at 2.0 and 2.5 kGy, respectively. Chlorophyll-a content showed 11% reduction at 2.5 kGy compared to the control. As a result of growth and Chl-a inhibition, chlorophyll productivity recorded a continuous significant decrease below the control in the cells exposed to 1, 1.5, 2 and 2.5 kGy by 8, 12, 15 and 25%, respectively after 15 days of incubation. In addition, phycobillins productivity showed significant decrease by 10 and 36% below the control at 2 and 2.5 kGy of gamma radiation, respectively. Protein production... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arthrospira platensis; Spirulina platensis; Gamma radiation; Metabolic activity; Nutritional value. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100409 |
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| Ghanem,I.; Orfi,M.; Shamma,M.. |
| Samples of food crops (peanut, peeled pistachio, unpeeled pistachio, rice, and corn) and feed (barley, bran, corn) were autoclave-sterilized, and inoculated with 10(6) of spore suspension of an isolate of Aspergillus flavus fungus known to produce aflatoxin B1 (AFB1) . Following a 10-day period of incubation at 27 C to allow for fungal growth, food and feed samples were irradiated with gamma radiation at the doses 4, 6, and 10 kGy. Results indicated that degradation of AFB1 was positively correlated with the increase in the applied dose of gamma ray for each tested sample. At a dose of 10 kGy percentages of AFB1 degradation reached highest values at 58.6, 68.8, 84.6, 81.1 and 87.8% for peanuts, peeled pistachios, unpeeled pistachios, corn and rice samples,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aflatoxin B1; Food feed; Gamma radiation. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000400035 |
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| Chirinos,Rodolfo R.O.; Vizeu,Dirceu M.; Destro,Maria Teresa; Franco,Bernadette D.G.M.; Landgraf,Mariza. |
| Escherichia coli O157:H7 causes bloody diarrhoea, haemorrhagic colitis and life-threatening complications like haemolytic uremic syndrome and thrombotic thrombocitopenic purpura. Among foods associated with outbreaks caused by this pathogen, hamburger is the most common one. The aim of this research was to determine the radiation dose to reduce the population of E. coli O157:H7 in hamburgers to non-detectable levels in order to render a safer product. Hamburgers, inoculated with Escherichia coli O157:H7, were exposed to gamma radiation (60Co) treatment, with doses ranging from 0 to 0.7 kGy. The average temperature during the process was 5.6ºC. Non-inoculated hamburgers were submitted to sensory evaluation after being exposed to irradiation doses of 0.8 kGy... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hamburger; Patties; Escherichia coli O157:H7; Food irradiation; Gamma radiation. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000100011 |
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| Netto,D. P.; Chiacchio,S. B.; Bicudo,P. L.; Alfieri,A. A.; Balarim,M. R. S.; Nascimento,N.. |
| Natural (NV) and Cobalto60-irradiated (IrV) Crotalus durissus terrificus venom were used to evaluate serum production capacity of sheep and possible hematological and biochemical effects. Freeze-dried venom aliquots were diluted in acidified saline solution (NaCl 150 mM, pH 3.0) and irradiated by a Cobalt 60 source at a dose of 5.54 x 102 Gy/h and a concentration of 2.000 Gy. Twelve sheep were divided into two groups of six animals. One group received irradiated venom (IrV) and the other natural venom (NV). Three antigen doses (venom) were administered at monthly intervals. Blood samples were collected weekly for analysis of serum neutralization potency and capacity, complete blood count (CBC), total plasma protein, fibrinogen, albumin, and globulin. At... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hematology; Gamma radiation; Irradiated crotalic venom; Crotalic antiserum; Ovine; Crotalus durissus terrificus. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992004000100004 |
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| Fajardo, M.. |
| La Comisión Ecuatoriana de Energía Atómica, durante los últimos años ha realizado investigaciones sobre la presencia de radón en el Ecuador con un sin fín de propósitos: Radón en espacios contaminados, contaminación de radón en labores mineras, radón aplicado a detección de uranio (Prospección y exploración de uranio), obteniéndose resultados que en su debido momento han sido publicados en diferentes informes a través de la C.E.E.A. Dentro del Programa Antártico Ecuatoriano, se planteó realizar investigación, sobre la presencia del gas radón y radiometría gamma superficial en Punta Fort William, que luego se amplió al Estrecho de Bransfield, utilizando equipos portátiles a baterías, que permitió realizar estudios en zonas inhóspitas, donde no existe una... |
| Tipo: Journal Contribution |
Palavras-chave: Radon; Electromagnetic radiation; Gamma radiation; Electromagnetic radiation; Radon; Gamma radiation; Http://aims.fao.org/aos/agrovoc/c_36146; Http://aims.fao.org/aos/agrovoc/c_32529; Http://aims.fao.org/aos/agrovoc/c_3186. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/3842 |
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| Vega, M.; Rueda, M.; Valencia T., M.. |
| La sensibilidad del medio ecológico Antártico obliga a conocer los diferentes niveles de contaminación de origen convencional y nuclear, con el fin de establecer posibles acciones tendientes a impedir que futuros accidentes e incidentes atenten contra sus ecosistemas. La evaluación de la concentración de Cs-137, como radionucleído gamma radiante, en agua, suelos y plantas, permite establecer la movilidad de este isótopo, considerando entre los más importantes elementos de contaminación originadas en los procesos de fisión nuclear. Se tomaron muestras de los tres medios anotados anteriormente, se las analizaron luego mediante espectroscopía gamma, encontrándose que en agua y en vegetales, los niveles de Cs-137 están por debajo de los límites de detección,... |
| Tipo: Journal Contribution |
Palavras-chave: Radioisotopes; Radioactive contamination; Gamma radiation; Gamma spectroscopy; Biodiversity; Polar zones; Radioisotopes; Radioactive contamination; Gamma radiation; Biodiversity; Http://aims.fao.org/aos/agrovoc/c_6430; Http://aims.fao.org/aos/agrovoc/c_28321; Http://aims.fao.org/aos/agrovoc/c_3186; Http://aims.fao.org/aos/agrovoc/c_33949. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/3726 |
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| Registros recuperados: 27 | |
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