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| Registros recuperados: 31 | |
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| Malomo,A. O.; Ekpo,O. E.; Imosemi,I. O.; Owoeye,O.; Osuagwu,F. C.; Avwioro,O. G.; Shokunbi,M.T.. |
| The neuroprotective effect of dexamethasone on the irradiated postnatal developing cerebellum of Wistar rat was studied. Seventy-five (day 1 old) neonates were separated into three groups; control group receiving no drug and no irradiation, irradiated group, and irradiated and dexamethasone group in which the dexamethasone was administered one hour before exposure to 5Gray (5Gy) of gamma rays. On complete exposure to the various interventions, the cerebellar tissues of animals from each group on days 5, 9, 14, 21 and 25 were processed for histological and histomorphometric studies. The result of the study showed that irradiation alone significantly reduced the thickness of the external granular layer (EGL) on day 5 and 14 at P<0.05, molecular layer (ML)... |
| Tipo: Journal article |
Palavras-chave: Morphology; Irradiation; Dexamethasone; Developing cerebellum. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000300017 |
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| Edagha,Innocent A; Shokunbi,Matthew T; Adenipekun,Adeniyi A; Bassey,Rosemary B; Ekong,Moses B. |
| The aim was to study the effect of preconception gamma irradiation on the gross morphometry of the adult female mice and its embryo. Twenty-seven mice; 18 females and 9 males: subdivided into 3 groups namely (Control, Non-Irradiation and Radiation) containing 6 females and 3 male mice each in 2:1 ratio. A gamma irradiation dose of 1Gy/min was delivered to each batch of mice exposed by a Cobalt 60, Theratron 780c model, by Atomic Energy of Canada Limited (AECL) at the Radiotherapy department of the University College Hospital, Ibadan. All the animals were mated 1 week post irradiation. Vaginal plugs were confirmed, and the pregnant females were sacrificed on day 14 of gestation by chloroform inhalation. The gross morphology of the female mice and their... |
| Tipo: Journal article |
Palavras-chave: Preconception; Irradiation; Gamma ray; Spinal cord; Embryo. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200039 |
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| Ferreira Junior,R. S.; Nascimento,N.; Martinez,J. C.; Alves,J. B.; Meira,D. A.; Barraviera,B.. |
| ELISA was used to evaluate, follow, and compare the humoral immune response of Swiss mice during hyperimmunization with natural and Cobalt 60-irradiated (60Co) Crotalus durissus terrificus venom. Potency and neutralization were evaluated by in vitro challenges. After hyperimmunization, immunity was observed by "in vivo" challenge and the side effects were assessed. The animals immunization with one LD50 of the venom was on days one, 15, 21, 30, and 45, when blood samples were collected; the challenges occurred on the 60th day. Results showed that ELISA was efficient in evaluating, following, and comparing mouse immune response during hyperimmunization. Serum titers produced with natural venom were similar to those produced with irradiated venom.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hyperimmunization; Irradiation; Crotalus durissus terrificus; ELISA; Serum neutralization; Detoxification. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000300008 |
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| Ferreira Junior,R. S.; Nascimento,N.; Couto,R.; Alves,J. B.; Meira,D. A.; Barraviera,B.. |
| Laboratory profile of young ovines was studied in order to evaluate and compare their antiserum production from natural and Cobalt-60 irradiated Crotalus durissus terrificus (C.d.t.) venoms. The parameters analyzed included complete blood count, and urea, creatinine, aspartate aminotransferase, total proteins, albumin and globulin serum measurements. Three groups of six animals each were used. Group 1 (G1) received natural C.d.t. venom; Group 2 (G2) received irradiated C.d.t. venom; and Group 3 (G3) was used as control and did not receive venom, only adjuvants, using seven venom inoculations. During the experimental period, animals were fortnightly weighed. According to clinical and weight evaluation, sheep in post-weaning phase showed no changes in their... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalus durissus terrificus; Hyperimmunization; Ovines; Antivenom; Irradiation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000400009 |
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| Ferreira Junior,R. S.; Nascimento,N.; Martinez,J. C.; Alves,J. B.; Meira,D. A.; Barraviera,B.. |
| ELISA was used to evaluate, accompany, and compare the humoral immune response of Swiss mice during hyperimmunization with native and Cobalt-60-irradiated (60Co) venoms of Bothrops jararaca, Bothrops jararacussu and Bothrops moojeni. Potency and neutralization were evaluated by in vitro challenges. After hyperimmunization, immunity was observed by in vivo challenge, and the side effects were assessed. The animals immunization with one LD50 of each venom occurred on days 1, 15, 21, 30, and 45, when blood samples were collected; challenges happened on the 60th day. Results showed that ELISA was efficient in evaluating, accompanying and comparing mouse immune response during hyperimmunization. Serum titers produced with natural venom were similar to those... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Venom; Irradiation; Bothrops; ELISA; Serum production; Detoxification. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000400006 |
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| Rousu, Matthew C.; Shogren, Jason F.. |
| Scientists and advocates can disagree on the value of new products or technologies, such as growth hormones, genetically modified organisms, and food irradiation. Both sides of the debate disseminate information to the public hoping to influence public opinion. This study assesses the economic value of both pro and anti public information using food irradiation as a case study. The value of information sources is estimated in isolation and in combination. In isolation, the results indicate each set of information has value. In combination, only the anti-irradiation information is found to have net positive value (persuading some consumers to purchase non-irradiated products). Pro-irradiation information worked to decrease the value of anti-irradiation... |
| Tipo: Journal Article |
Palavras-chave: Experimental auctions; Irradiation; Value of information; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2006 |
URL: http://purl.umn.edu/8623 |
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| Crutchfield, Stephen R.; Buzby, Jean C.; Roberts, Tanya; Ollinger, Michael; Lin, Chung-Tung Jordan. |
| USDA is now requiring all Federally inspected meat and poultry processing and slaughter plants to implement a new system called Hazard Analysis and Critical Control Points (HACCP) to reduce potentially harmful microbial pathogens in the food supply. This report finds that the benefits of the new regulations, which are the medical costs and productivity losses that are prevented when foodborne illnesses are averted, will likely exceed the costs, which include spending by firms on sanitation, temperature control, planning and training, and testing. Other, nonregulatory approaches can also improve food safety, such as providing market incentives for pathogen reduction, irradiation, and education and labeling to promote safe food handling and thorough cooking. |
| Tipo: Report |
Palavras-chave: Food safety; Foodborne illness; Microbial pathogens; Meat and poultry inspection; HACCP; Cost of illness; Consumer education; Irradiation; Food Consumption/Nutrition/Food Safety; Livestock Production/Industries. |
| Ano: 1997 |
URL: http://purl.umn.edu/34009 |
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| BOAS,ANA CAROLINA VILAS; NASSUR,RITA DE CÁSSIA MIRELA RESENDE; FREIRE,JULIANA MESQUITA; DECARLOS NETO,ANTÔNIO; LIMA,LUIZ CARLOS DE OLIVEIRA. |
| ABSTRACT The aim of this study was to evaluate physicochemical characteristics, antioxidant activity, total phenolic, vitamin C and anthocyanins content of grape juices from cv. Isabel submitted to different UV-C doses. The fruits were harvested, sanitized and inserted into a UV-C radiation chamber, where different doses were applied: 0 kJ/m2 (0 minutes); 0.68 kJ/m2 (2 minutes); 2.73 kJ/m2 (4 minutes); 4.10 kJ/m2 (6 minutes). The grape juice was extracted at 75±5°C for 1 hour, using an equipment with steam extraction and submitted to evaluations after 0, 30, 60 and 90 days of cold storage. No significant differences were observed in grape juices submitted to radiation doses regarding the antioxidant activity and phenolic compounds. However, the vitamin C... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis labrusca; Phenolic compounds; Vitamin C; Quality; Irradiation. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000200901 |
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| Usberti,Franciane Colares Souza; Ferraz,Antonio Carlos de Oliveira. |
| ABSTRACT: Sanitization using chemical agents to reduce the microbiological load on the surface of agricultural products have the drawback of leaving residues. Conversely, physical treatments, such as ultraviolet radiation C (UV-C), are residue-free, non-toxic and environmentally friendly. Ripe figs are perishable, exhibiting an epidermis with low resistance to mechanical treatment, high water content and the ostiole, which is an open door that expedites undesirable microorganism penetration. In this study, the effect of different energy levels of UV-C radiation on the appearance and physico-chemical properties of the figs when stored at 10 °C and 20 °C was evaluated focusing on the technological parameters of the application of radiation. The energy levels... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ficus carica L.; Irradiation; Postharvest conservation; Micro-organism inactivation. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000300901 |
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| Moreira da Silva,Paula Porrelli; Prado Martin,José Guilherme; Fillet Spoto,Marta Helena. |
| Abstract Several studies about juçara palm fruit (Euterpe edulis) have emphasized its high antioxidant capacity. However, there is a lack of studies comparing the effects of conservation technologies on the physicochemical and sensory quality of juçara pulp. This work aimed at evaluating the effects of gamma radiation (60Co) and pasteurization process on the physicochemical and sensory quality ofjuçara pulp. The irradiated (2.5 ± 0.06 kGy) and pasteurized (80°C/5 minutes) pulps were stored at 6°C, 90% RH, for 30 days (3 periods of analysis) and were analyzed for their microbiological, physicochemical (titratable acidity, soluble solids content, color, phenolic compounds, anthocyanin content, polyphenol oxidase and peroxidase activity) and sensory... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthocyanins; Euterpe edulis; Irradiation; Non-Thermal Processing; Tropical Fruits. |
| Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000400471 |
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| VASCONCELOS,PAULO M.; ONOE,ARTUR T.; KAWASHITA,KOJI; SOARES,ADALBERTO J.; TEIXEIRA,WILSON. |
| Laser heating 40Ar/39Ar geochronology provides high analytical precision and accuracy, mum-scale spatial resolution, and statistically significant data sets for the study of geological and planetary processes. A newly commissioned 40Ar/39Ar laboratory at CPGeo/USP, São Paulo, Brazil, equips the Brazilian scientific community with a new powerful tool applicable to the study of geological and cosmochemical processes. Detailed information about laboratory layout, environmental conditions, and instrumentation provides the necessary parameters for the evaluation of the CPGeo/USP 40Ar/39Ar suitability to a diverse range of applications. Details about analytical procedures, including mineral separation, irradiation at the IPEN/CNEN reactor at USP, and mass... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geochronology; 40Ar/39Ar method; Irradiation; Calibration. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000200008 |
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| SOARES,IVANESA G.M.; SILVA,EDVANE B.; AMARAL,ADEMIR J.; MACHADO,ERILANE C.L.; SILVA,JOSENILDA M.. |
| ABSTRACT This work evaluated the effects of ionizing radiation on the physico-chemical and sensory characteristics of the potato cultivar Ágata (Solanum tuberosum L.), including budding and deterioration, with the end goal of increasing shelf life. For this, four groups of samples were harvested at the maturation stage. Three of them were separately exposed to a Co-60 source, receiving respective doses of 0.10, 0.15 and 2.00 kGy, while the non-irradiated group was kept as a control. All samples were stored for 35 days at 24 °C (± 2) and at 39% relative humidity. The following aspects were evaluated: budding, rot, loss of weight, texture, flesh color, moisture, external and internal appearance, aroma, soluble solids, titratable acidity, vitamin C, protein,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conservation; Irradiation; Potato; Spoilage; Storage. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300941 |
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| Martin,Clayton A.; Milinsk,Maria C.; Visentainer,Jesuí V.; Matsushita,Makoto; de-Souza,Nilson E.. |
| There is a mounting concern about the intake of foods containing trans fatty acids (TFA) due to their deleterious effects on human health, mainly on the cardiovascular system. In this way, it is important to consider the processes that form TFA in foods, and the alternatives to minimize them. Among the processes that result in the formation of TFA, the hydrogenation of vegetable oils stands out for its impact on the diet of people living in industrialized countries. Other processes such as edible oil refining, meat irradiation, food frying, and biohydrogenation also contribute to increase the daily intake of TFA. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trans fatty acids; Partial hydrogenation; Deodorization; Frying; Irradiation; Biohydrogenation. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000200015 |
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| Registros recuperados: 31 | |
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