Monitoreo de temperatura en cajas térmicas de camiones repartidores de productos alimenticios utilizando herramientas IoT

El presente proyecto se orienta a la captura, transmisión, almacenamiento y presentación de datos de entornos en el transporte de productos alimenticios aplicando las últimas tecnologías disponibles en el mercado con énfasis en la utilización de elementos alineados con los conceptos de ‘open hardware’ y ‘open software’. Se trata de la implementación de un prototipo funcional a instalar en el camión repartidor de productos lácteos del CERET para la medición y transmisión de los siguientes parámetros: temperatura con sensor de precisión intermedia y rápido tiempo de muestreo, temperatura con sensor de precisión y humedad relativa del ambiente (0 - 100%). Los datos serán recibidos y centralizados en un servidor dedicado a tal fin (que bien podría virtualizarse) y serán almacenados en bases de datos temporales, para posteriormente ser visualizados convenientemente, permitiendo la extracción de datos a los formatos más usuales (CSV). En la arquitectura de recopilación de datos (data gathering, figura 1) se utilizan conceptos de Internet de las cosas (IoT) siendo uno de los más importantes los relativos a la conectividad ‘Machine to machine’ (M2M) por medio de protocolos modernos de tipo publicación - suscripción.  Se estudiarán también las alternativas de transmisión sobre capas seguras de transferencias de datos (SSL - Certificados). Un aspecto fundamental, es la utilización y prueba de mediano plazo de módulos de bajo costo, que si bien pueden exhibir menores MTBF (tiempo medio entre fallas) son perfectamente aplicables a proyectos qué, cómo en este caso, no se encuadran en lo que se conoce cómo ‘misión crítica’. Más aún, este potencial inconveniente puede subsanarse con la instalación de elementos redundantes. Se potenciará el uso de tecnologías de centralización que permita el escalamiento a un número importante de equipos de monitoreo manteniendo la identificación de cada uno

Moringa oleifera Ameliorates Age-Related Memory Decline and Increases Endogenous Antioxidant Response in Drosophila melanogaster Exposed to Stress

Age-related dementia has been estimated to double every 20 years. Despite the nutritional value of Moringa oleifera Lam., its effect on age-related memory decline and its anti-ageing bioactive fractions are yet to be fully elucidated. In the present study, the crude methanol leaves extract of Moringa oleifera Lam. (MEMO) and its different fractions were screened for anti-ageing bioactivity in the fruit fly, Drosophila melanogaster w1118 whiteflies. A day-old virgin flies were reared in food supplemented with different concentrations of the methanol leaves extract of Moringa oleifera at 1, 2, and 5mg/ml respectively. A sequential bioassay-guided fractionation approach was subsequently adopted. Treated flies were subjected to lifespan, reproductive performance, climbing, memory and oxidative stress resistance assays according to established protocols. There was a dose-dependent effect of the leaves extract on lifespan, reproductive performance, climbing activity and oxidative stress resistance as age progressed (P < 0.05). Mean survival times of treated male and female flies increased by 12.3±1.2, 15.5±1.0 and 26.6±0.4%, and 12.0±1.1, 17.5±0.8 and 24.3±0.8% respectively, relative to the control. There was a significant increase in memory scores of the 50-day old aged flies in the 5mg/ml group P < 0.0001. The Moringa Ethyl acetate (EA) fraction F2 gave the highest anti-ageing bioactivity in the flies (P < 0.05). The leaves extract showed an ameliorative effect on age-related memory decline and an increase in oxidative stress resistance in Drosophila melanogaster w1118 white flies without the commonly found adverse effect in reproductive performance

Hyperfine splitting in heavy ions with the nuclear magnetization distribution determined from experiments on muonic atoms

The hyperfine splitting in hydrogenlike $^{209}$Bi, $^{203}$Tl, and $^{205}$Tl is calculated with the nuclear magnetization determined from experimental data on the hyperfine splitting in the corresponding muonic atoms. The single-particle and configuration-mixing nuclear models are considered. The QED corrections are taken into account for both electronic and muonic atoms. The obtained results are compared with other calculations and with experiment.Comment: 8 pages, 5 tables, accepted for publication in Nuclear Instruments and Methods in Physics Research

Marine mammal bycatch by the industrial bottom trawl fishery at the Río de la Plata Estuary and the adjacent Atlantic Ocean

Fisheries interactions with non-target marine vertebrates are a worldwide problem. The impact of coastal bottom trawl fisheries on marine mammals has never been evaluated before in the Río de la Plata Estuary and the adjacent Atlantic Ocean. Our aim was estimating the bycatch per unit effort (BcPUE) and incidental mortality rates of marine mammals caused by the industrial coastal bottom trawl fisheries fleet. We evaluated the mortality of three species (i.e., franciscana dolphin Pontoporia blainvillei, South American sea lion Otaria flavescens, and the South American fur seal Arctocephalus australis); these species are facing conservation problems either at the regional or local scale. We conducted an onboard data collection program of marine mammals' bycatch involving crew members of 10 vessels (30%) of the Uruguayan coastal bottom trawl fleet between January 2009 and April 2012. A total of 102 marine mammal individuals were bycaught during 490 fishing trips involving 2,398 fishing days. Mortalities estimated for franciscana dolphin were the highest among the species affected, with values adding up to ~100 individuals for year (with scenarios of population decline in the area), followed by South American sea lion with ~77 individuals by year (0.8% of local population) and the South American fur seal with an annual mortality estimate of ~25 individuals (~0.02% of local population). BcPUE showed significant temporal variation, with franciscana dolphin BcPUE varying seasonally and those of otariids according to their breeding season. Our estimates of marine mammal bycatch by bottom trawl fisheries should constitute an important input for the sustainable management of fisheries and the conservation of marine biodiversity in the southwestern Atlantic Ocean.Fil: Franco Trecu, Valentina. Universidad de la República; UruguayFil: Szephegyi, María Nube. Universidad de la Republica; UruguayFil: Doño, Florencia. Universidad de la Republica; UruguayFil: Forselledo, Rodrigo. Universidad de la Republica; UruguayFil: Reyes, Federico. Universidad de la Republica; UruguayFil: Passadore, Cecilia. Universidad de la Republica; Uruguay. Flinders University; AustraliaFil: Crespo, Enrique Alberto. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; ArgentinaFil: Inchausti, Pablo. Universidad de la República; Urugua

Marine mammal bycatch by the industrial bottom trawl fishery at the Río de la Plata Estuary and the adjacent Atlantic Ocean.

Fisheries interactions with non-target marine vertebrates are a worldwide problem. The impact of coastal bottom trawl fisheries on marine mammals has never been evaluated before in the Río de la Plata Estuary and the adjacent Atlantic Ocean. Our aim was estimating the bycatch per unit effort (BcPUE) and incidental mortality rates of marine mammals caused by the industrial coastal bottom trawl fisheries fleet. We evaluated the mortality of three species (i.e., franciscana dolphin Pontoporia blainvillei, South American sea lion Otaria flavescens, and the South American fur seal Arctocephalus australis); these species are facing conservation problems either at the regional or local scale. We conducted an onboard data collection program of marine mammals’ bycatch involving crew members of 10 vessels (30%) of the Uruguayan coastal bottom trawl fleet between January 2009 and April 2012. A total of 102 marine mammal individuals were bycaught during 490 fishing trips involving 2,398 fishing days. Mortalities estimated for franciscana dolphin were the highest among the species affected, with values adding up to ~100 individuals for year (with scenarios of population decline in the area), followed by South American sea lion with ~77 individuals by year (0.8% of local population) and the South American fur seal with an annual mortality estimate of ~25 individuals (~0.02% of local population). BcPUE showed significant temporal variation, with franciscana dolphin BcPUE varying seasonally and those of otariids according to their breeding season. Our estimates of marine mammal bycatch by bottom trawl fisheries should constitute an important input for the sustainable management of fisheries and the conservation of marine biodiversity in the southwestern Atlantic Ocean

It's not only about technology, it's about people: interpersonal skills as a part of the IT education.

Proceedings of: Second World Summit on the Knowledge Society (WSKS 2009), Chania, Crete, Greece, September 16-18, 2009.The importance of what have been termed the "soft skills" for the professional development of IT professionals is beyond any doubt. Taking account of this circumstance, the objective of the current research may be phrased as two separate questions. In the first place, determining the importance which IT related degree students place on these types of competencies for their professional future. In the second place, the importance which the development of the mentioned competencies has been given during their studies. The realization of an empirical study has fulfilled the two objectives described. The results demonstrate, on the one side, the moderate relevance which students assign to interpersonal competencies, especially emotional competencies, in contrast to the international curricular recommendations and studies concerning labor markets. On the other hand, the results indicate the scarce emphasis which lecturers have placed on the development of such competencies.Publicad

Perturbation-induced radiation by the Ablowitz-Ladik soliton

An efficient formalism is elaborated to analytically describe dynamics of the Ablowitz-Ladik soliton in the presence of perturbations. This formalism is based on using the Riemann-Hilbert problem and provides the means of calculating evolution of the discrete soliton parameters, as well as shape distortion and perturbation-induced radiation effects. As an example, soliton characteristics are calculated for linear damping and quintic perturbations.Comment: 13 pages, 4 figures, Phys. Rev. E (in press

QED Effects in Heavy Few-Electron Ions

Accurate calculations of the binding energies, the hyperfine splitting, the bound-electron g-factor, and the parity nonconservation effects in heavy few-electron ions are considered. The calculations include the relativistic, quantum electrodynamic (QED), electron-correlation, and nuclear effects. The theoretical results are compared with available experimental data. A special attention is focused on tests of QED in a strong Coulomb field.Comment: 28 pages, 6 tables, 5 figure

Effects of ileo-rectal anastomosis on cholesterol metabolism in pigs fed either casein or extruded soya beans

The importance of legume proteins in the cholesterol metabolism has been recognized in different animals, but the contribution of large intestine to this process is still unclear. The present study was undertaken to compare a casein based diet (C) with a diet, where 60% of the protein supplied by casein was replaced by extruded soybean (ES) on cholesterol metabolism of pigs with (I) and without ileo-rectal anastomosis (IRA). Four groups of six growing pigs (28.0 kg) were assigned to the treatments. All the animals presented a moderate hypercholesterolemia and there were no significant differences, due to the protein source or IRA, in LDL- and HDL- cholesterol plasma concentrations. ES significantly depressed (P0.01) total, free and esters of hepatic cholesterol and increased (P<0.01) hepatic total lipids concentration. There were significant (P<0.05) interactions between diet and IRA on HMG CoA reductase and cholesterol 7- hydroxylase activities, but 27–hydroxylase activity was unaffected. Feeding ES showed a tendency (P=0.056) to decrease the activity of LDL liver receptors, depressed free (P0.05), total cholesterol (P0.01) and total bile acid concentration in bile (P0,001), and increased (P0.05) neutral sterols fecal output. There were interactions effects (P0.05) between diet and IRA in the proportion of microbial sterols, bile acid fecal output and proportion of primary and secondary fecal acids. Nevertheless the effects over hepatic cholesterol and neutral sterol output promoted by ES diets, it wasn’t verified any hypocholesterolemic effect, which could be more related with soybean protein structure and LDL receptors modulation