El programa OPTIMIX - versión 3.0

El Programa OPTIMIX está concebido como una herramienta auxiliar de diseño para el caso de edificios solares pasivos. Su objetivo principal es el de establecer la mezcla optima entre medidas de conservación y sistemas solares pasivos desde el enfoque económico, de manera tal que su utilización sirva de ayuda al proyectista en la toma de decisiones y en la búsqueda de las soluciones cuya relación costos-beneficios brinde la mejor Factibilidad Económica. Basado en el método del Cociente Carga Colector (Solar Load Ratio) desarrollado por Douglas J. Balcomb, en esta nueva versión presentada para entorno Windows, se ha buscado obtener un programa de uso muy amigable y sumamente útil para el profesional no especializado.The Optimix Application has been conceived as an auxiliary tool for the design of Passive Solar Buildings. The main target put up on action has been to optimize the mix between Conservation Devices and Passive Solar Systems using Economic Feasibility concepts. The Application aids to find variations and gives arguments to building designers for to select solutions with better cost-benefit ratios. The Application uses the Solar Load Ratio Method, originally devised by Douglas J. Balcomb. This new version for Windows environment has been specially designed for friendly use by professionals without a bio-climatic specific background.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

El programa OPTIMIX - versión 3.0

El Programa OPTIMIX está concebido como una herramienta auxiliar de diseño para el caso de edificios solares pasivos. Su objetivo principal es el de establecer la mezcla optima entre medidas de conservación y sistemas solares pasivos desde el enfoque económico, de manera tal que su utilización sirva de ayuda al proyectista en la toma de decisiones y en la búsqueda de las soluciones cuya relación costos-beneficios brinde la mejor Factibilidad Económica. Basado en el método del Cociente Carga Colector (Solar Load Ratio) desarrollado por Douglas J. Balcomb, en esta nueva versión presentada para entorno Windows, se ha buscado obtener un programa de uso muy amigable y sumamente útil para el profesional no especializado.The Optimix Application has been conceived as an auxiliary tool for the design of Passive Solar Buildings. The main target put up on action has been to optimize the mix between Conservation Devices and Passive Solar Systems using Economic Feasibility concepts. The Application aids to find variations and gives arguments to building designers for to select solutions with better cost-benefit ratios. The Application uses the Solar Load Ratio Method, originally devised by Douglas J. Balcomb. This new version for Windows environment has been specially designed for friendly use by professionals without a bio-climatic specific background.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

El programa OPTIMIX - versión 3.0

El Programa OPTIMIX está concebido como una herramienta auxiliar de diseño para el caso de edificios solares pasivos. Su objetivo principal es el de establecer la mezcla optima entre medidas de conservación y sistemas solares pasivos desde el enfoque económico, de manera tal que su utilización sirva de ayuda al proyectista en la toma de decisiones y en la búsqueda de las soluciones cuya relación costos-beneficios brinde la mejor Factibilidad Económica. Basado en el método del Cociente Carga Colector (Solar Load Ratio) desarrollado por Douglas J. Balcomb, en esta nueva versión presentada para entorno Windows, se ha buscado obtener un programa de uso muy amigable y sumamente útil para el profesional no especializado.The Optimix Application has been conceived as an auxiliary tool for the design of Passive Solar Buildings. The main target put up on action has been to optimize the mix between Conservation Devices and Passive Solar Systems using Economic Feasibility concepts. The Application aids to find variations and gives arguments to building designers for to select solutions with better cost-benefit ratios. The Application uses the Solar Load Ratio Method, originally devised by Douglas J. Balcomb. This new version for Windows environment has been specially designed for friendly use by professionals without a bio-climatic specific background.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Assessment of metals bound to marine plankton proteins and to dissolved proteins in seawater

Studies based on laser ablation–inductively coupled plasma-mass spectrometry (LA–ICP-MS) have been performed to assess metal bound to dissolved proteins and proteins from marine plankton after two-dimensional polyacrylamide gel electrophoresis (2D PAGE). Dissolved proteins were pre-concentrated from surface seawater (60 L) by tangential ultrafiltration with 10 kDa molecular weight cut-off (MWCO) membranes and further centrifugal ultrafiltration (10 kDa) before proteins isolation by methanol/chloroform/water precipitation. Proteins isolation from plankton was assessed after different trichloroacetic acid (TCA)/acetone and methanol washing stages, and further proteins extraction with a phenol solution. LA–ICP-MS analysis of the electrophoretic profiles obtained for dissolved proteins shows the presence of Cd, Cr, Cu, and Zn in five spots analyzed. These proteins exhibit quite similar molecular weights (within the 10–14 kDa range) and pIs (from 5.8 to 7.3). Cd, Cr, Cu, and Zn have also been found to be associated to proteins isolated from plankton samples. In this case, Cd has been found to be bound to proteins of quite different molecular weight (9, 13 and 22 kDa) and pIs (4.5, 5.2, 5.5, and 10). However, trace elements such as Cr, Cu and Zn appear to be mainly bound to plankton proteins of low molecular weight and variable pI

The nuclear and extended infrared emission of the Seyfert galaxy NGC 2992 and the interacting system Arp 245

We present subarcsecond resolution infrared (IR) imaging and mid-IR spectroscopic observations of the Seyfert 1.9 galaxy NGC 2992, obtained with the Gemini North Telescope and the Gran Telescopio CANARIAS (GTC). The N-band image reveals faint extended emission out to ~3 kpc, and the PAH features detected in the GTC/CanariCam 7.5-13 micron spectrum indicate that the bulk of this extended emission is dust heated by star formation. We also report arcsecond resolution MIR and far-IR imaging of the interacting system Arp 245, taken with the Spitzer Space Telescope and the Herschel Space Observatory. Using these data, we obtain nuclear fluxes using different methods and find that we can only recover the nuclear fluxes obtained from the subarcsecond data at 20-25 micron, where the AGN emission dominates. We fitted the nuclear IR spectral energy distribution of NGC 2992, including the GTC/CanariCam nuclear spectrum (~50 pc), with clumpy torus models. We then used the best-fitting torus model to decompose the Spitzer/IRS 5-30 spectrum (~630 pc) in AGN and starburst components, using different starburst templates. We find that, whereas at shorter mid-IR wavelengths the starburst component dominates (64% at 6 micron), the AGN component reaches 90% at 20 micron. We finally obtained dust masses, temperatures and star formation rates for the different components of the Arp 245 system and find similar values for NGC 2992 and NGC 2993. These measurements are within those reported for other interacting systems in the first stages of the interaction.Comment: 20 pages, 12 figures, accepted by MNRA

Evaluación energética de las primeras mejoras constructivas realizadas sobre un laboratorio de la Universidad Nacional de Luján–UNLU

Un recinto constituido por un único espacio dentro de la Universidad de Luján es convertido en prototipo experimental por el grupo de trabajo. Interesa de este lugar su posición exenta en relación con el resto de los edificios, sus características constructivas y el mal comportamiento térmico frente al clima del verano, donde las altas temperaturas internas convierten al lugar en inhabitable. Con el objetivo de acumular experiencia que sea aplicable a viviendas económicas con comportamientos similares, se propone realizar una serie de mejoras sucesivas de bajo costo que puedan ser evaluadas en sus resultados en forma paulatina. Para ello se parte de las mediciones y balances realizados sobre el prototipo en su versión original y se comparan resultados con las mismas mediciones y balances hechos una vez concretada la primera etapa de las mejoras previstas. De todo ello se muestra la metodología empleada, los resultados obtenidos y se sacan conclusiones.A building constituted by one single zone, located into the University of Luján is turned an experimental prototype by the work group. It's interesting of this place his particular location without relationship with the rest of the buildings, its constructive characteristics and very poor thermal behavior on summer weather, where the high internal temperatures turn the place inhabitable. With the intention of accumulate experience useful for economic houses with similar behaviors; we set out a series of successive low cost improvements, suitable to be evaluated by their results in gradual way. We start with measurements and balances made on the prototype in its original version and then compare results with the same measurements and balances done after the first stage of the predicted improvements. Of all the proceeding, we show the methodology used, the results obtained and the conclusions.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Evaluación energética de las primeras mejoras constructivas realizadas sobre un laboratorio de la Universidad Nacional de Luján–UNLU

Un recinto constituido por un único espacio dentro de la Universidad de Luján es convertido en prototipo experimental por el grupo de trabajo. Interesa de este lugar su posición exenta en relación con el resto de los edificios, sus características constructivas y el mal comportamiento térmico frente al clima del verano, donde las altas temperaturas internas convierten al lugar en inhabitable. Con el objetivo de acumular experiencia que sea aplicable a viviendas económicas con comportamientos similares, se propone realizar una serie de mejoras sucesivas de bajo costo que puedan ser evaluadas en sus resultados en forma paulatina. Para ello se parte de las mediciones y balances realizados sobre el prototipo en su versión original y se comparan resultados con las mismas mediciones y balances hechos una vez concretada la primera etapa de las mejoras previstas. De todo ello se muestra la metodología empleada, los resultados obtenidos y se sacan conclusiones.A building constituted by one single zone, located into the University of Luján is turned an experimental prototype by the work group. It's interesting of this place his particular location without relationship with the rest of the buildings, its constructive characteristics and very poor thermal behavior on summer weather, where the high internal temperatures turn the place inhabitable. With the intention of accumulate experience useful for economic houses with similar behaviors; we set out a series of successive low cost improvements, suitable to be evaluated by their results in gradual way. We start with measurements and balances made on the prototype in its original version and then compare results with the same measurements and balances done after the first stage of the predicted improvements. Of all the proceeding, we show the methodology used, the results obtained and the conclusions.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Evaluación energética de las primeras mejoras constructivas realizadas sobre un laboratorio de la Universidad Nacional de Luján–UNLU

Un recinto constituido por un único espacio dentro de la Universidad de Luján es convertido en prototipo experimental por el grupo de trabajo. Interesa de este lugar su posición exenta en relación con el resto de los edificios, sus características constructivas y el mal comportamiento térmico frente al clima del verano, donde las altas temperaturas internas convierten al lugar en inhabitable. Con el objetivo de acumular experiencia que sea aplicable a viviendas económicas con comportamientos similares, se propone realizar una serie de mejoras sucesivas de bajo costo que puedan ser evaluadas en sus resultados en forma paulatina. Para ello se parte de las mediciones y balances realizados sobre el prototipo en su versión original y se comparan resultados con las mismas mediciones y balances hechos una vez concretada la primera etapa de las mejoras previstas. De todo ello se muestra la metodología empleada, los resultados obtenidos y se sacan conclusiones.A building constituted by one single zone, located into the University of Luján is turned an experimental prototype by the work group. It's interesting of this place his particular location without relationship with the rest of the buildings, its constructive characteristics and very poor thermal behavior on summer weather, where the high internal temperatures turn the place inhabitable. With the intention of accumulate experience useful for economic houses with similar behaviors; we set out a series of successive low cost improvements, suitable to be evaluated by their results in gradual way. We start with measurements and balances made on the prototype in its original version and then compare results with the same measurements and balances done after the first stage of the predicted improvements. Of all the proceeding, we show the methodology used, the results obtained and the conclusions.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Influence of Fe doping and magnetic field on martensitic transition in Ni–Mn–Sn melt-spun ribbons

"Mn-rich Ni-Mn-Sn metamagnetic shape memory alloys exhibiting magnetostructural transformation are of a great potential as the base materials for solid-state refrigeration. With the aim of fine tuning of the transformation characteristics and improving functional properties, in the present work we have fabricated polycrystalline Ni50-xFexMn40Sn10 (x = 0, 2, 4, 6, 8 at.%) melt-spun ribbons, starting from the base alloy with x = 0, which is weakly magnetic in both austenitic and martensitic phases. By exploring martensitic transformation (MT) and magnetic behaviors as a function of Fe doping and magnetic field, we have found that Fe and/or magnetic field reduce the MT temperature and Curie temperature of austenite phase, becoming closer to each other as the Fe-content increases, accompanied by an increase of the magnetic moment of austenite, magnetization jump at MT, transformation volume, and magnetic contribution, Delta S-M, to the total entropy change at MT. The ribbons present moderate values of Delta S-M equal to 11 J kg(-11)K(-1) at 5 T for x = 8, moderate thermal hysteresis (10-14 K) nearly independent of Fe doping or magnetic field, and adjustable structural and magnetic transition temperatures close to room temperature. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.