HEATING OF BEE HONEY, OLIVE OIL, MILK AND WATER IN A SOLAR COOKER BOX TYPE WITH INTERNAL REFLECTORS

ABSTRACT Numerical simulation results are shown to determine the heating in liquids when a solar cooker box type with internal reflector is used to this end. The data evaluated correspond to temperature values from bee honey, olive oil, milk and water when they are heated in the solar cooker. The maximum simulation temperatures reached are 91.8, 91.6, 86.2 and 85.3 ºC that correspond to bee honey, olive oil, milk and water respectively. A comparative between simulation and experimental results also are shown. The values presented evidence the influence of the specific heat in each fluid considered. In the numerical simulation were used solar radiation and environment temperature values for February 26, 2006 in Mexico City. The experimental data were acquired using an Eppley piranometer and a Field Point device and were used as initial numerical conditions in the simulation. The processing information acquired was made using the LabView 7.0 software

Estudo de solos do município de Pinhal, RS.

bitstream/item/47503/1/circular-112.pdf; bitstream/item/46965/1/Pinhal-aptidaoagricola.pdf; bitstream/item/46967/1/Pinhal-capacidade-de-uso.pdf; bitstream/item/46968/1/Pinhal-Relevo93.pdf; bitstream/item/46969/1/Pinhal-Solos.pd

Estudo de solos do município de Seberi, RS.

bitstream/item/47566/1/circular-114.pdf; bitstream/item/47545/1/Seberi-aptidaoagricola.pdf; bitstream/item/47546/1/Seberi-capacidade.pdf; bitstream/item/47547/1/Seberi-Relevo93.pdf; bitstream/item/47550/1/Seberi-solos.pd

The Occurrence of Intersex in Different Populations of the Marine Amphipod Echinogammarus marinus in North-West Brittany – A Longterm-Study

In the past two decades, an increasing body of studies has been published on the intersex phenomenon in separate-sexed crustaceans from marine and freshwater ecosystems. Various causes are being considered that could have an influence on the occurrence of intersex. Besides genetic factors, environmental conditions such as photoperiodicity, temperature, salinity and parasitism, but also environmental pollution with endocrine disrupting chemicals (EDCs) are discussed. As part of a long-term monitoring (2012 – 2020) in north-west Brittany, we recorded the occurrence of intersex in the marine amphipod Echinogammarus marinus. We quantified the intersex incidence at marine and estuarine sites and analyzed the incidence in relation to the endocrine potential of the sediments. Intersex occurred with mean frequencies between 0.87% and 12%. It was striking that the incidence of intersex increased with increasing distance from the sea. Since the highest incidence was observed at the range boundary of this stenohaline species, we assume that intersex is triggered by endocrine potential and increasing stress due to increasing freshwater content − and thus an interplay of different environmental factors

Estudo de solos do município de Vicente Dutra, RS.

bitstream/item/46984/1/circular-113.pdf; bitstream/item/47513/1/Vicente-Dutra-aptidao-agricola.pdf; bitstream/item/47514/1/Vicente-Dutra-capacidade.pdf; bitstream/item/47518/1/Vicente-Dutra-relevo.pdf; bitstream/item/47519/1/Vicente-Dutra-solos.pd

Estudo de Solos do Município de Erval Seco, RS.

bitstream/item/46946/1/circular-111.pdf; bitstream/item/46947/1/ErvalSeco-aptidaoagricola93.pdf; bitstream/item/46948/1/ErvalSeco-capacidadeuso93.pdf; bitstream/item/46950/1/ErvalSeco-relevo93.pdf; bitstream/item/46951/1/ErvalSeco-solos93.pd

Estudos de Solos do Município de Frederico Westphalen, RS.

bitstream/item/45561/1/CIRCULAR-TECNICA-116.pdf; bitstream/item/45562/1/FredericoWestphalen-aptidaoagricola.pdf; bitstream/item/45563/1/FredericoWestphalen-capacidadedeuso.pdf; bitstream/item/45564/1/FredericoWestphalen-relevo2.pdf; bitstream/item/45565/1/FredericoWestphalen-solos.pd

Estudos de solos do município de Iraí, RS.

bitstream/item/39171/1/circular-104.pdf; bitstream/item/39172/1/Irai-aptidaoagricola.pdf; bitstream/item/39173/1/Irai-capacidadeuso.pdf; bitstream/item/39174/1/Irai-Relevo.pdf; bitstream/item/39175/1/Irai-Solos.pd

Estudos de solos do município de Caiçara, RS.

bitstream/item/38012/1/boletim-118.pdf; bitstream/item/38013/1/Caicara-aptidaoagricola93.pdf; bitstream/item/38014/1/Caicara-capacidadeuso93.pdf; bitstream/item/38015/1/Caicara-Relevo.pdf; bitstream/item/38017/1/Caicara-solos93.pd

Estudos de solos do município de Novo Tiradentes, RS

bitstream/item/39844/1/circular-109.pdf; bitstream/item/39845/1/Novo-Tiradentes-aptidaoagricola93.pdf; bitstream/item/39846/1/Novo-Tiradentes-capacidadedeuso.pdf; bitstream/item/39847/1/Novo-Tiradentes-capacidadedeuso93.pdf; bitstream/item/39848/1/Novo-Tiradentes-Relevo93.pdf; bitstream/item/39849/1/Novo-Tiradentes-solos93.pd