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| Registros recuperados: 2.860 | |
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| Penczak,Tadeusz; Agostinho,Angelo A.; Hahn,Norma S.. |
| The frequency of nine food types in the guts of 58 fish species from the Paraná River and its floodplain was compared using similarity definition. A synthetic table ordered on the basis of this definition, with fish species on axis y, and food types on axis x, enabled easy reading numerous kinds of information on feeding ecology of fish in the catchment. For example: 1) which fish species were generalists, specialists or opportunists, 2) those classified as herbivorous species consumed small amounts of animal food, 3) that fish consumed any food type that contained transformed solar energy and matter, 4) what are food preferences dependent on fish taxonomic affinity. The possibility of employing synthetic tables for investigating spatial and temporal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Paraná River; Floodplain; Fish; Feeding; Similarity definition; Synthetic table. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000100013 |
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| Carmo,Luiz Simeão do; Dias,Ricardo Souza; Linardi,Valter Roberto; Sena,Maria José de; Santos,Deise Aparecida dos. |
| An outbreak of staphylococcal food poisoning involving 42 people who had eaten a meal at a restaurant in the Municipality of Passos, Minas Gerais, Brazil, is reported. Thirty-one of the individuals became ill with vomiting, diarrhea and dizziness within 30 minutes after eating the meal. The foods suspected were: chicken pancake, rice, beans, tomato sauce and mashed chick-peas. Large numbers (> 2.0x10(8) CFU/g) of enterotoxigenic staphylococci were present in the chicken pancake. These strains produced enterotoxins A, B and D. Swabs from the nasal cavity and throat and from under the fingernails of food handlers were cultured for the detection of enterotoxigenic staphylococci carriers. Four out of five of them were healthy carriers of enterotoxin A, B, C... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Staphylococcal enterotoxin; Food poisoning; Staphylococci; Food handlers. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400012 |
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| Takiuchi,Elisabete; Barry,Aline Fernandes; Alfieri,Alice Fernandes; Filippsen,Patrícia; Alfieri,Amauri Alcindo. |
| Bovine coronavirus (BCoV) is a known cause of winter dysentery (WD) in adult cattle. The morbidity of the disease is high, that results in a significant decrease in milk production and consequently, economic losses. In the present study, we report on a classical outbreak of WD that affected a high-production Holstein dairy herd raised in a tropical country. The lactating batch included 154 cows, and 138 (90%) presented diarrhea in a short (nine days) period of time. Three (2%) cows died. The other batches of animals did not become ill. The evolution of the disease in the herd, including the clinical signs and epidemiological features, strongly suggested a WD case. Semi-nested PCR and RFLP confirmed that BCoV was the cause of the infection. Samples tested... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Dairy herd; Winter dysentery; Diarrhea; Bovine coronavirus. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700008 |
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| Del-Vechio-Vieira,Glauciemar; Sousa,Orlando Vieira de; Miranda,Mariza Abreu; Senna-Valle,Luci; Kaplan,Maria Auxiliadora Coelho. |
| The chemical composition, analgesic and anti-inflammatory properties of essential oil from Ageratum fastigiatum were investigated. The main compounds found in the essential oil were germacrene D, α-humulene and β-cedrene. The oil, with LD50 of 2.50 g/kg, inhibited the acetic acid-induced writhing at the dose of 200 mg/kg. In the formalin test, the oil inhibited the first phase (200 mg/kg) and the second phase (100 mg/kg and 200 mg/kg). In the hot plate test, after 30 and 60 min of treatment the doses of 100 and 200 mg/kg increased the reaction time. The antiedematogenic effect, reduction on the exudate volume and leukocyte mobilization were observed at the doses of 100 and 200 mg/kg. The results indicated that A. fastigiatum possessed the analgesic and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ageratum fastigiatum; Essential oil; Nociception; Inflammation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500008 |
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| Leprevost,Alsedo. |
| Apesar da natural existência de grande oscilação em todos os teores, em uma mesma jazida, das análises expostas na tabela anexa podemos concluir que: 1) as amostras com teor MgO até 3%, representam 52,58% do total das análises; de 3 até 5, 7,62%; de 5 até 10, 6,77%; e acima de 10, 33,05%. 2) com teor em insolúvel até 5%, 54,23%; de 5 até 10, 16,10%; e acima de 10, 27,96%. 3) das análises em que se fez a dosagem do MnO, 47,27% deram resultado negativo. 4) com exceção da maior parte dos calcáreos brancos, todos os outros contém carbono grafítico. 5) os calcáreos da zona de Itaiacoca, Município de Ponta Grossa, além da mistura com silicato de magnésio, estão acompanhados de Mg (OH)² em teores variáveis. 6) apesar de algumas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcareous; State of Paraná; Analytical chemistry. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000500006 |
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| Freitas-Ribeiro,Gláucia Marques; Furlong,John; Vasconcelos,Viviane Oliveira; Dolinski,Cláudia; Loures-Ribeiro,Alan. |
| Engorged and partially engorged females of Boophilus microplus were exposed to 600; 3,000; 6,000 and 30,000 infective juveniles of Steinernema carpocapsae Weiser, 1955 Santa Rosa and All strains per dish, under lab conditions. Eggs weight, pre-laying period, laying period, survival period, reproductive efficiency rate, percentage of larval eclosion and lethal concentrations of 50% and 90% (CL50 and CL90) were calculated for engorged females. In the case of partially engorged females, only egg weight, survival period and CL50 and CL90 were calculated. All biological parameters of engorged or partially engorged females were altered by exposition of S. carpocapsae infective juveniles (IJs), Santa Rosa and All strains (p<0.05). The increase in the response... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Boophilus microplus; Steinernema carpocapsae; Entomopathogenic nematodes; Cattle tick; Reproduction. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800007 |
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| Qiu,Congyang; Zhu,Tonglin; Lan,Liying; Zeng,Qingmao; Du,Zhiguo. |
| ABSTRACT Maceaene and macamide contents as well as antioxidant effect of petroleum ether extract of black maca (BM), yellow maca (YM), and purple maca (PM) on diabetes mellitus (DM) rats were investigated. The results showed that seven, six, and five analogues of macamides were identified from the petroleum ether extracts of BM, YM, and PM, respectively. BM extract exhibited the highest contents of total macamides. Comparatively, the PM extract has the lowest macamide quantity. The maceaene contents in all the extracts showed no significant difference (p>0.05). Macamide contents in maca with the same color were not statistically different. Pharmacological results showed that 60-day oral administration of the petroleum ether extract of maca (100 mg/kg.d)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maca extract; Antioxidant activity; Maceaene; Macamide; Diabetes mellitus rat. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100326 |
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| Pinto,Marcus Vinícius de Mello; Pereira Jr,Francisco José; Scaglione,Guilhermo Mario; Santos-Filho,Sebastião David; Silva,Cristiane Martins da; Silva,Marco Antônio Guimarães da; Rocha,Lamara Laguardia Valente; Gonçalves,Reggiani Vilela. |
| This study aimed at collecting data of masseter myofascial tension, related to the joint hyperactivity by electromyography activity of masseter muscle at rest, isotonic and isometric chewing. 08 patients living in the city of Buenos Aires, Argentina, volunteers, aged between 22 and 62 years, both sexes were evaluated. The electromyography data collection at rest had reported that 50% showed differences in masseter muscle tension increased in the left for the right masseter; in isometric contraction, 50% had a difference in masseter tension right; in isotonic contraction 62.5% there was a difference in increased tension in the left masseter. Anthropometry of the face was suggested, where 25% showed significant variance of 01 cm of discrepancy on the right,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Muscle tension; Masseter; Electromyography. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200008 |
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| Santos,Francielle da Rocha; Mariano,Juliana D’Angela; Sestrem Junior,Jonas Abilio; Urbanetz Junior,Jair. |
| Abstract Sustainability, a concept used to exploit natural resources without harming future generations, is being applied to power generation. In Brazil, the main source of electric energy comes from hydroelectric plants, due to abundant water resources. However, the implementation of these plants causes irreversible impacts on the environment and society. On the other hand, the impacts caused by photovoltaic panels are considerably smaller in the construction phase and zero in the operation phase. This article describes the impacts generated by hydroelectric power plants and gives an overview of the power generated by floating photovoltaic panels using 10% of the area of the reservoirs of the largest hydroelectric power plants in Brazil. The results... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydroelectric plant; Photovoltaic power; Floating panel. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000200211 |
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| Santos Júnior,José Araújo dos; Cardoso,Jorge João Ricardo Ferreira; Silva,Cleomacio Miguel da; Silveira,Suêldo Vita; Amaral,Romilton dos Santos. |
| Potassium-40 was determined in soil in an area with 40,000 m² situated in the western State of Pernambuco, Brazil. For radiometric measurements, the gamma spectrometry method with a high purity germanium (HPGe) detector was used. Sampling of 78 soil samples has been performed at intervals of 25 m. The specific activities of 40K were calculated based on the photopeak of 1.46 MeV. Values from 541 to 3,572 Bq kg-1 were obtained (mean of 1,827 Bq kg-1). These values allowed the determination of the elemental concentrations as well as the absorbed dose rates in air, 1 m above the ground. The values varied from 1.7 to 11.5% (mean of 6%) and from 23.4 to 154.3 nGy h-1 (mean of 79 nGy h-1), respectively. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 40K in soil; 40K gamma spectrometry; 40K in environmental radiological protection. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000700033 |
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| Brati,Rossetto, Matheus; Maria,Lourenço, Elizete. |
| ABSTRACT The Market share of electrical vehicles has been rising in the past few years and tends to rise even more. According to the International Energy Agency, an increase of 50% in the number of electrical vehicles is expected. Whilst that increase is beneficial from a greenhouse gases emissions drop point of view, that rise could, on the other hand, represent a major increase in the electrical power consumption. Besides, other problems such as harmonics and overloads could emerge from the massive connection of electrical vehicles to the electrical grid. Therefore, it is necessary to perform studies and simulations in order to estimate those problems and to mitigate the problems related to the inevitable expansion of the electric vehicle fleet in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Electric Vehicles; Distributed Generation; Vehicle-to-Grid; Ancillary Services; Smart Cities; MatPower. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000200202 |
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| Moraes,Fillipe Alexandre; Takeda,Othavio Toniasso. |
| ABSTRACT The growing use of Photovoltaic Solar Energy in Brazil, both in power plants and in distributed generation systems, brings with it a series of practical and technical questions that are not limited to the design and project of the systems. Environmental factors and resources related to the use, operation, maintenance, decommissioning and final disposal of the equipment and components that constitute them, should be taken into consideration, so that these systems maintain an adequate performance during their lifespan granting the safety for users, properties and avoid negative environmental impacts. Within the concept of Risk Analysis within the Life Cycle of these systems, the present study addresses a perspective of the growth of the use of Solar... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Photovoltaic Installations; Maintenance; Degradation; Reliability. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000200234 |
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| Registros recuperados: 2.860 | |
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