Mendoza Wine Explorer

La investigación tiene por objetivo desarrollar un plan de negocios referido a una agencia de viajes especializada en enoturismo de tipo receptivo, cuya finalidad es ofrecer tours a bodegas con actividades participativas y educativas. El concepto fundamental de la agencia es lograr que los turistas que ya tienen cierto conocimiento acerca de la industria vitivinícola y sus regiones, puedan realizar experiencias para adquirir saberes más técnicos acerca del vino, de forma vivencial, didáctica y placentera, superando las visitas repetitivas. Los objetivos específicos son: identificar un nicho de mercado de interesados en conocimientos más profundos del vino, desarrollar un plan de marketing, establecer un plan de operaciones para la ejecución del proyecto, constituir un plan de recursos humanos para ejecutar el proyecto y determinar la factibilidad del negocio en la provincia de Mendoza. La metodología utilizada en la investigación de mercados es cuantitativa y cualitativa, dirigida a potenciales clientes y operadores de turismo. El resultado del estudio indica que una empresa de tales características es viable y rentable.Fil: Bertona Garnica, Roberto Martí

Medición de corriente en sistemas FVs por efecto Hall

Con el objeto de medir una corriente eléctrica, se utilizó un sensor de efecto Hall UGN3503, el cual fue acoplado mediante un circuito acondicionador de señal a un conversor A/D de un microcontrolador PIC 16F873. Con el fin de determinar la respuesta del sensor, se efectuaron varias mediciones con valores conocidos de corriente y se los comparó con los valores digitalizados por el conversor A/D del microcontrolador. Se obtuvieron valores de R2>0.9991 y una exactitud de ±0,1A. Asimismo, se proponen futuras correcciones para facilitar la calibración y aumentar la exactitud de las mediciones.With the intention of measuring an electrical current, a UGN3503 Hall-effect sensor was used, which was connected through a signal conditioning circuit to a A/D converter of a PIC16f873 microcontroller. With the purpose of determining the sensor behaviour, several measurements with values known current were made and with digitalized values of the A/D converter of the microcontroller were compared. Values of R2>0.9991 were obtained and an exactitude of ±0,1A. Also, to facilitate the calibration and to increase the exactitude of the measurements, future corrections were proposed.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Medición de corriente en sistemas FVs por efecto Hall

Con el objeto de medir una corriente eléctrica, se utilizó un sensor de efecto Hall UGN3503, el cual fue acoplado mediante un circuito acondicionador de señal a un conversor A/D de un microcontrolador PIC 16F873. Con el fin de determinar la respuesta del sensor, se efectuaron varias mediciones con valores conocidos de corriente y se los comparó con los valores digitalizados por el conversor A/D del microcontrolador. Se obtuvieron valores de R2>0.9991 y una exactitud de ±0,1A. Asimismo, se proponen futuras correcciones para facilitar la calibración y aumentar la exactitud de las mediciones.With the intention of measuring an electrical current, a UGN3503 Hall-effect sensor was used, which was connected through a signal conditioning circuit to a A/D converter of a PIC16f873 microcontroller. With the purpose of determining the sensor behaviour, several measurements with values known current were made and with digitalized values of the A/D converter of the microcontroller were compared. Values of R2>0.9991 were obtained and an exactitude of ±0,1A. Also, to facilitate the calibration and to increase the exactitude of the measurements, future corrections were proposed.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Medición de corriente en sistemas FVs por efecto Hall

Con el objeto de medir una corriente eléctrica, se utilizó un sensor de efecto Hall UGN3503, el cual fue acoplado mediante un circuito acondicionador de señal a un conversor A/D de un microcontrolador PIC 16F873. Con el fin de determinar la respuesta del sensor, se efectuaron varias mediciones con valores conocidos de corriente y se los comparó con los valores digitalizados por el conversor A/D del microcontrolador. Se obtuvieron valores de R2>0.9991 y una exactitud de ±0,1A. Asimismo, se proponen futuras correcciones para facilitar la calibración y aumentar la exactitud de las mediciones.With the intention of measuring an electrical current, a UGN3503 Hall-effect sensor was used, which was connected through a signal conditioning circuit to a A/D converter of a PIC16f873 microcontroller. With the purpose of determining the sensor behaviour, several measurements with values known current were made and with digitalized values of the A/D converter of the microcontroller were compared. Values of R2>0.9991 were obtained and an exactitude of ±0,1A. Also, to facilitate the calibration and to increase the exactitude of the measurements, future corrections were proposed.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Ecohealth interventions limit triatomine reinfestation following insecticide spraying in La Brea, Guatemala

In this study, we evaluate the effect of participatory Ecohealth interventions on domestic reinfestation of the Chagas disease vector Triatoma dimidiata after village-wide suppression of the vector population using a residual insecticide. The study was conducted in the rural community of La Brea, Guatemala between 2002 and 2009 where vector infestation was analyzed within a spatial data framework based on entomological and socio-economic surveys of homesteads within the village. Participatory interventions focused on community awareness and low-cost home improvements using local materials to limit areas of refuge and alternative blood meals for the vector within the home, and potential shelter for the vector outside the home. As a result, domestic infestation was maintained at ≤ 3% and peridomestic infestation at ≤ 2% for 5 years beyond the last insecticide spraying, in sharp contrast to the rapid reinfestation experienced in earlier insecticide only interventions. Copyright © 2013 by The American Society of Tropical Medicine and Hygiene

Root ABA and H+-ATPase are key players in the root and shoot growth-promoting action of humic acids

Although the ability of humic (HA) and fulvic acids (FA) to improve plant growth has been demonstrated, knowledge about the mechanisms responsible for the direct effects of HA and FA on the promotion of plant growth is scarce and fragmentary. Our study investigated the causal role of both root PM H+-ATPase activity and ABA in the SHA-promoting action on both root and shoot growth. The involvement of these processes in the regulation of shoot cytokinin concentration and activity was also studied. Our aim was to integrate such plant responses for providing new insights to the current model on the mode of action of HA for promoting root and shoot growth. Experiments employing specific inhibitors and using Cucumis sativus L. plants show that both the root PM H+-ATPase activity and root ABA play a crucial role in the root growth-promoting action of SHA. With regard to the HA-promoting effects on shoot growth, two pathways of events triggered by the interaction of SHA with plant roots are essential for the increase in root PM H+-ATPase activity—which also mediates an increase in cytokinin concentration and action in the shoot—and the ABA-mediated increase in hydraulic conductivity (Lpr).Fil: Olaetxea, Maite. Universidad de Navarra; EspañaFil: Mora, Maria Veronica. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Investigaciones Agrobiotecnológicas - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones Agrobiotecnológicas; ArgentinaFil: Bacaicoa, Eva. Universidad de Navarra; EspañaFil: Baigorri, Roberto. Timac Agro. Technical and Development Department; EspañaFil: Garnica, Maria. Universidad de Navarra; EspañaFil: Fuentes, Marta. Universidad de Navarra; EspañaFil: Zamarreño, Angel Maria. Universidad de Navarra; EspañaFil: Spíchal, Lukáš. Palacký University Olomouc; República ChecaFil: García-Mina, José María. Universidad de Navarra; Españ

Agricultural, forestry, textile and food waste used in the manufacture of biomass briquettes: a review

In recent decades there has been a considerable global increase in urban population, industrial productivity, energy demand, waste generation, and the emission of greenhouse gases from energy conversion. The agricultural, forestry, textile and food sectors generate large amounts of waste and their environmental impact has become a major cause for concern in societies around the world. Current efforts are concerned with maximization of combustion efficiency and energy-related processes in general by making use of industrial residues and reducing particulate matter. The present review addresses the availability of different types of biomass that can be used to produce renewable energy and focuses on agricultural, forestry, urban and industrial residues. It also provides a description of the physical and calorific characteristics of the various raw materials available for the manufacture of briquettes and other fossil fuel alternatives

Root-Shoot Signaling crosstalk involved in the shoot growth promoting action of rhizospheric humic acids

Numerous studies have shown the ability of humic substances to improve plant development. This action is normally reflected in an enhancement of crop yields and quality. However, the mechanisms responsible for this action of humic substances remain rather unknown. Our studies have shown that the shoot promoting action of sedimentary humic acids is dependent of its ability to increase root hydraulic conductivity through signaling pathways related to ABA, which in turn is affected in roots by humic acids in an IAA-NO dependent way. Furthermore, these studies also indicate that the primary action of humic acids in roots might also be physical, resulting from a transient mild stress caused by humic acids associated with a fouling-cleaning cycle of wall cell pores. Finally the role of alternative signal molecules, such as ROS, and corresponding signaling pathways are also discussed and modeled in the context of the above-mentioned framework.Fil: Olaetxea, Maite. Universidad de Navarra; EspañaFil: Mora, Maria Veronica. Universidad de Navarra; España. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Calderin García, Andrés. Universidade Federal Rural do Rio de Janeiro; BrasilFil: Azevedo Santos, Leandro. Universidade Federal Rural do Rio de Janeiro; BrasilFil: Baigorri, Roberto. Universidad de Navarra; EspañaFil: Fuentes, Marta Cecilia. Universidad de Navarra; EspañaFil: Garnica, María. Universidad de Navarra; EspañaFil: Louro Berbara, Ricardo Luis. Universidade Federal Rural do Rio de Janeiro; BrasilFil: Zamarreño, Angel Maria. Universidad de Navarra; EspañaFil: Garcia Mina, Jose M.. Universidad de Navarra; Españ

Root ABA and H+-ATPase are key players in the root and shoot growth-promoting action of humic acids

Although the ability of humic (HA) and fulvic acids (FA) to improve plant growth has been demonstrated, knowledge about the mechanisms responsible for the direct effects of HA and FA on the promotion of plant growth is scarce and fragmentary. Our study investigated the causal role of both root PM H+-ATPase activity and ABA in the SHA-promoting action on both root and shoot growth. The involvement of these processes in the regulation of shoot cytokinin concentration and activity was also studied. Our aim was to integrate such plant responses for providing new insights to the current model on the mode of action of HA for promoting root and shoot growth. Experiments employing specific inhibitors and using Cucumis sativus L. plants show that both the root PM H+-ATPase activity and root ABA play a crucial role in the root growth-promoting action of SHA. With regard to the HA-promoting effects on shoot growth, two pathways of events triggered by the interaction of SHA with plant roots are essential for the increase in root PM H+-ATPase activity-which also mediates an increase in cytokinin concentration and action in the shoot-and the ABA-mediated increase in hydraulic conductivity (Lp(r))

Shoot iron status and auxin are involved in iron deficiency-induced phytosiderophores release in wheat

Background: The release of phytosiderephores (PS) to the rhizosphere is the main root response to iron (Fe) deficiency in graminaceous plants. We have investigated the role of the Fe status in the shoot as well as of the signaling pathways controlled by three relevant phytoregulators-indolacetic acid (IAA), ethylene and nitric oxide (NO) - in the regulation of this root response in Fe-starved wheat plants. To this end, the PS accumulation in the nutrient solution and the root expression of the genes encoding the nicotianamine aminotransferase (TaNAAT) and ferritin (TaFER) have been evaluated in plants subjected to different treatments. Results: The application of Fe to leaves of Fe-deficient plants prevented the increase in both PS root release and TaNAAT gene expression thus showing the relevant role of the shoot to root communication in the regulation of PS root release and some steps of PS biosynthesis. Experiments with specific hormone inhibitors showed that while ethylene and NO did not positively regulate Fe deficiency induced PS root release, auxin plays an essential role in the regulation of this process. Moreover, the application of IM to Fe-sufficient plants promoted both PS root release and TaNAAT gene expression thus indicating that auxin might be involved in the shoot to root signaling network regulating Fe-deficiency root responses in wheat Conclusions: These results therefore indicate that PS root release in Fe-deficient wheat plants is directly modulated by the shoot Fe status through signaling pathways involving, among other possible effectors, auxin