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Vendramin A.L.G.,Federal University of Parana | Vendramin A.L.G.,Centro Polytechnic Jardim das Americas | Yamamoto C.I.,Federal University of Parana | Yamamoto C.I.,Centro Polytechnic Jardim das Americas | And 5 more authors.
Journal of Food, Agriculture and Environment | Year: 2015

The thermal performance of a solar water heating with 1.00 m2 flat plate collectors in Cascavel - PR is presented in this article, paper presents the solution to leverage the marketing of solar heating systems through detailed constituent materials of the solar collector studies. These abundant materials in construction, such as expanded polyethylene, PVC, aluminum and glass tubes, were prepared by mixing them with new materials to minimize loss of efficiency while decreasing its cost. The system was tested during months and the collector obtained maximum recorded temperature of outlet fluid of 55°C, while the maximum temperature of the water at the bottom of the hot water tank was 35°C. The average daily energy collected was 19.6 MJ/d, the energy supplied by the solar plate was 16.2 MJ/d, the loss in the feed pipe was 3.2 MJ/d, the solar fraction was 32.2%, the efficiency of the collector was 45.6% and the efficiency of the system was 37.8%. © 2015, World Food Ltd. and WFL Publishers. All rights reserved. Source


Lourenco A.C.S.,Federal University of Parana | Gomes C.,Federal University of Parana | Boareto A.C.,Federal University of Parana | Mueller R.P.,Centro Polytechnic Jardim das Americas | And 8 more authors.
Human and Experimental Toxicology | Year: 2014

It has been hypothesized that oils containing high levels of omega-3 polyunsaturated fatty acids, such as canola and fish oil, could counteract some of the adverse effects induced by phthalates. In the present study, the influence of different oily vehicles on di-butyl phthalate (DBP)-induced testicular toxicity and lipid profile was investigated. Pregnant Wistar rats were treated by oral gavage from gestation days 13 to 20 with DBP (500 mg/kg/day) diluted in three different vehicles: corn, canola or fish oil. Male fetuses were analyzed on gestation day 20. DBP exposure lowered intratesticular testosterone levels and anogenital distance, regardless of the vehicle used. The percentage of seminiferous cords containing multinucleated gonocytes and cord diameter was increased in DBP-exposed groups, compared with vehicle controls, with no difference between the three DBP-exposed groups. Clustering of Leydig cells was seen in all DBP groups. Lipid profile indicated that administration of canola and fish oil can increase the content of omega-3 fatty acids in rat testis. However, content of omega-3 was diminished in DBP-treated groups. Overall, our results indicate that different oily vehicles did not alter fetal rat testicular toxicity induced by a high DBP dose. © The Author(s) 2014. Source

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