An alternative to mitigate the consumption of fossil fuels is the use of biomass as an energy sou... more An alternative to mitigate the consumption of fossil fuels is the use of biomass as an energy source. In this sense, the rural sector in Latin America has great potential due to its multiple biomass sources. For this reason, this study aims to analyze potential technologies related to the production of energy from biomass and its application in the Latin American rural sector. To achieve this, four key processes are analyzed. First is biomass conditioning through solar dryers. Next are the thermochemical processes that allow for their transformation into biofuels, for which the pyrolysis and the hydrothermal methods were selected due to the flexibility of the products obtained. Subsequently, cogeneration is studied to produce electrical and thermal energy from biomass or its derivatives. Finally, to close the CO2 cycle, a balance of CO2 fixation in a forest plantation is presented as an example of carbon accumulated in biomass. The literature systematic review allowed us to determin...
Documento compilado como parte del informe final del producto "10 genotipos identificados y multi... more Documento compilado como parte del informe final del producto "10 genotipos identificados y multiplicados con atributos deseables" de la agenda quinquenal de investigación de Corpoica 2012, Convenio 5011 con el Ministerio de Agricultura y Desarrollo Rural.
La ganadería vacuna es una de las principales actividades económicas de la provincia de Corriente... more La ganadería vacuna es una de las principales actividades económicas de la provincia de Corrientes, contribuyendo con el 33 % del producto bruto geográfico del sector primario. La misma, ocupa una superficie de 5.740.183 ha, representando el 64 % del área provincial (Calvi, et al 2020), con una existencia en el año 2019 de 4.883.589 cabezas (FUCOSA, 2019). Los productores ganaderos son alrededor de 23.493, el 92 % representan a pequeños y medianos productores que disponen hasta 500 cabezas y abarcan el 28 % de las existencias. El restante 8 % de los productores concentran el 72 % del rodeo provincial (FUCOSA, 2019). Entre los problemas que caracterizan a una gran parte del estrato de pequeños a medianos productores, se distingue la dificultad para comercializar la hacienda. En general, comercializan el ganado en el campo por la escasa experiencia de venta en remates. Esta limitante se debe a una serie de factores que incluyen el escaso número de cabezas, que reduce la capacidad de competir y negociar, la baja calidad de la oferta, la incapacidad financiera y dificultades de logística para la comercialización. Estas limitantes los marginan de los sistemas comerciales , haciéndolos vulnerables a la especulación, que paga normales precios por debajo del mercado. A estas restricciones se agregan aspectos impositivos y previsionales. La consecuencia es una menor rentabilidad, que profundiza el subdesarrollo del sector (Rofman, A 1997). Las explotaciones agropecuarias aisladas necesitan para su crecimiento, dos soportes fundamentales. Uno es la existencia de un entorno institucional que les posibilite alcanzar oportunidades potenciales, y el otro es la búsqueda de esquemas y propuestas asociativas, que posibiliten alcanzar economías de escala (Márquez, S. 2004). El Estado, representado en sus instituciones nacionales y provinciales, busca brindar apoyo a este tipo de actividades, buscando institucionalidad legal, y un sentido de cooperación entre los agentes, abriendo un espacio para su participación. El objetivo del presente trabajo fue mejorar un sistema comercial para los pequeños y medianos productores ganaderos de Corrientes, a través del trabajo asociativo para la comercialización conjunta de su producción. Metodología El trabajo inicial estuvo orientado a fortalecer el enfoque institucional y organizativo para desarrollar un método de comercialización no habitual. Dentro del estrato de pequeños a medianos productores, el trabajo se orientó a aquellos cuyo ingreso principal proviene de la ganadería, aunque con limitaciones en cantidad de tierra, capital, acceso a la tecnología y a la información adecuada sobre mercados.
Proceedings of the 4th Brazilian Technology Symposium (BTSym'18), 2019
In recent years, project management in consulting firms has grown due to greater demands for good... more In recent years, project management in consulting firms has grown due to greater demands for goods and services. However, this growth has meant that due to inefficiencies in the management, delays in project delivery times are generated. In addition, the same situation occurs for performance of personnel’s competences, as well as in defining the scope of the project. Therefore, this article proposes a model for the application of Project Management Body of Knowledge (PMBOK) based on knowledge management, which consists of the following areas: stakeholder management, risk management, cost management, time management, human resources management, quality management, integration management, and scope management. To show the ease of use of this model, a case study was conducted in an engineering consulting firm. The results of the application of the model were successful: the delay in project delivery times was reduced by 70% and the risks that may exist during execution were reduced by ...
Advances in Manufacturing, Production Management and Process Control, 2019
One of the most important problems affecting companies that assemble and market vehicles is stock... more One of the most important problems affecting companies that assemble and market vehicles is stock depletion of finished products. Therefore, many small and medium-sized enterprises (SMEs) have attempted to manage this situation by using tools such as the Q mode, which continuously reviews inventories but does not indicate when and in what quantity a company must supply its sales outlets but requires a more complex level of supplier development and supply chain management efficiency than SMEs can achieve. Likewise, with our proposal we achieved a 50% decrease in stock depletion, based on an analysis of model results, with a confidence level of 95% and a certainty level of 75.30%, projecting a profit of 59000 soles with a return cost of 1.41 and a recovery period of 2 years and 4 months, ensuring both the sustainability and profitability of the proposal.
Colour polymorphism is a widespread phenomenon in natural populations of several species. In part... more Colour polymorphism is a widespread phenomenon in natural populations of several species. In particular, it is especially common on marine gastropod species from the genus Littorina. Recently, it has been argued that intrapopulation shell colour polymorphism in Littorina fabalis could be caused by negative frequency-dependent sexual selection via a mechanism of mate choice (indirectly estimated via negative assortative mating). Here we try to determine the existence of negative assortative mating in three species of the subgenus Neritrema (L. fabalis, L. obtusata, L. saxatilis) that share a similar shell colour polymorphism, in order to ascertain if this mechanism could represent an ancestral character in this subgenus that could be contributing to the maintenance of the colour polymorphism in each species. Here, we collected or reanalysed from previous studies a sample of mating pairs of the three species from seven locations from NW Spain and NE Russia and estimated assortative mating using the I PSI index. Our results show that all species and populations show a systematic tendency towards negative assortative mating when shell colour is grouped in the broad categories: 'light' and 'dark'. Although, a more detailed analysis of each colour individually suggests that shell colour may not be the main target of assortative mating, but perhaps physically linked to another trait or through pleiotropic effects. This hypothesis opens interesting new lines of research in Littorina snails.
Innovations in Corrosion and Materials Science (Formerly Recent Patents on Corrosion Science), 2019
Background: : Fractal dimension is a versatile method to study and evaluate corrosion from the po... more Background: : Fractal dimension is a versatile method to study and evaluate corrosion from the point of view of metallic conditions, namely: surface roughness, electrochemical measurements and microscopy images. Aluminum corrodes at different rates, under different pH electrolytes with or without the presence of chloride ions. Methods:: In this work, corrosion and the roughness for aluminum corrosion at different pH electrolytes: acid, with and without chlorides, neutral and basic solutions, It was measured using electrochemical and optic techniques. Results:: The results of Electrochemical Impedance Spectroscopy (EIS) and Noise Measurements (ENM), Digital Holographic Microscopy (DHM), Scanning Electron Microscope (SEM) micrographs and their respective Fractal Dimension analysis were obtained. Conclusions:: For the different experimental techniques and conditions, fractal dimension were presented, reflecting the surface condition of aluminum corrosion as a function of pH solution.
Scientific evidence on the efficacy and safety of dietary protein. protein diet and exercise Obes... more Scientific evidence on the efficacy and safety of dietary protein. protein diet and exercise Obesity has become a global pandemic, 2.8 million people die each year as a result of being overweight or obese, as declared by the World Health Organization (WHO). There are different approaches in the field of nutrition and physical activity to combat obesity. In the context of very low calorie diets (VLCD), we found the protein diet, a variety of ketogenic diet (KD) with a low fat content, according to the guidelines made by the commission and cooperation by the member states in the scientific examination of questions related to food (SCOOP) for the application of a very low calorie diet. The aim of this review is to provide scientific evidence to assess the effectiveness, safety and long-term maintenance of the effects of VLCD, and specifically protein diet, applied in the context of a multidisciplinary approach as the method Pronokal ® , on overweight and obesity and its relationship with exercise.
Resumen Durante la última década han v enido emergiendo numerosas inv estigaciones que han estudi... more Resumen Durante la última década han v enido emergiendo numerosas inv estigaciones que han estudiado distintos formatos de ejercicio con predominio cardio-respiratorio e intensificación de esfuerzos intermitentes. Esta modalidad de ejercicio es conocida por los acrónimos HIIT o HIT (High-Intensity Interv al Trainng; High-Intensity Intermittent Training o simplemente High Intensity Training) y otras denominaciones que esconden distintos formatos, pero cuy a característica común es la realización de repetidas series de esfuerzos de corta a larga duración, realizados a alta intensidad e intercalados por períodos de recuperación. Los formatos HIT son un potente estímulo de ejercicio cardiov ascular con efectos agudos y crónicos prometedores para distintos marcadores de salud y del rendimiento cardio-respiratorio. Conocer estos efectos puede ay udar a v islumbrar las posibles aplicaciones y utilidades en poblaciones sanas y con patologías cardiometabólicas. A demás, estos formatos pueden...
Revista de Psicopatología y Psicología Clínica, 2011
Resumen: La psicología basada en la evidencia es un modelo metodológico que pretende legitimar tr... more Resumen: La psicología basada en la evidencia es un modelo metodológico que pretende legitimar tratamientos y teorías que presenten pruebas empíricas que respalden sus resultados. Actualmente los tratamientos psicológicos que cumplen los requisitos derivados de este sistema son admitidos como tratamientos de elección en la mayoría de servicios públicos y privados de salud. El presente artículo pretende revisar los criterios para el diseño y evaluación de guías de tratamiento de las dos instituciones más relevantes en este ámbito, la American Psychological Association (APA) y el National Institute for Health and Clinical Excellence (NICE), exponiendo y comparando los listados actualizados de tratamientos psicológicos eficaces por trastornos. Concluimos señalando algunos de los aspectos positivos y negativos de este enfoque y realizando algunas propuestas de mejora, centrando nuestra atención en la futura adaptación para intervenciones con problemas psicológicos (no trastornos) y en otros ámbitos (educativo, intervención social). Palabras clave: Psicología basada en la evidencia; tratamientos psicológicos eficaces; artículo de revisión.
ICAR '05. Proceedings., 12th International Conference on Advanced Robotics, 2005.
In this paper we will present a new - application oriented - control method for the biped jump. W... more In this paper we will present a new - application oriented - control method for the biped jump. We shall be restricting our study to the vertical jump with both feet together and legs placed exactly side by side, and with the robot moving in the sagittal plane. The control method is based on the sliding mode technique. We will
2005 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2005
In this paper the problem of the vertical jump for humanoid robots is treated. A simplified model... more In this paper the problem of the vertical jump for humanoid robots is treated. A simplified model is used which captures the fact of the legs moving exactly side by side and that fixes the upper body in a given configuration. Then a simple control scheme based on sliding modes is presented. The vertical jump is executed maintaining the center
Every closed nonorientable 3-manifold A4 can be obtained as the union of three orientable handleb... more Every closed nonorientable 3-manifold A4 can be obtained as the union of three orientable handlebodies V,, V,, V, whose interiors are pairwise disjoint. If gi denotes the genus of K, g, <g, <g,, we say that A4 has tri-genus (gi, g,, g3), if in terms of lexicographical ordering, the triple (gi, g,, g3) is minimal among all such decompositions of A4 into orientable handlebodies. We relate the tri-genus of M to the genus of a surface that represents the dual of the first Stiefel-Whitney class of M. This is used to determine g, and g2.
An alternative to mitigate the consumption of fossil fuels is the use of biomass as an energy sou... more An alternative to mitigate the consumption of fossil fuels is the use of biomass as an energy source. In this sense, the rural sector in Latin America has great potential due to its multiple biomass sources. For this reason, this study aims to analyze potential technologies related to the production of energy from biomass and its application in the Latin American rural sector. To achieve this, four key processes are analyzed. First is biomass conditioning through solar dryers. Next are the thermochemical processes that allow for their transformation into biofuels, for which the pyrolysis and the hydrothermal methods were selected due to the flexibility of the products obtained. Subsequently, cogeneration is studied to produce electrical and thermal energy from biomass or its derivatives. Finally, to close the CO2 cycle, a balance of CO2 fixation in a forest plantation is presented as an example of carbon accumulated in biomass. The literature systematic review allowed us to determin...
Documento compilado como parte del informe final del producto "10 genotipos identificados y multi... more Documento compilado como parte del informe final del producto "10 genotipos identificados y multiplicados con atributos deseables" de la agenda quinquenal de investigación de Corpoica 2012, Convenio 5011 con el Ministerio de Agricultura y Desarrollo Rural.
La ganadería vacuna es una de las principales actividades económicas de la provincia de Corriente... more La ganadería vacuna es una de las principales actividades económicas de la provincia de Corrientes, contribuyendo con el 33 % del producto bruto geográfico del sector primario. La misma, ocupa una superficie de 5.740.183 ha, representando el 64 % del área provincial (Calvi, et al 2020), con una existencia en el año 2019 de 4.883.589 cabezas (FUCOSA, 2019). Los productores ganaderos son alrededor de 23.493, el 92 % representan a pequeños y medianos productores que disponen hasta 500 cabezas y abarcan el 28 % de las existencias. El restante 8 % de los productores concentran el 72 % del rodeo provincial (FUCOSA, 2019). Entre los problemas que caracterizan a una gran parte del estrato de pequeños a medianos productores, se distingue la dificultad para comercializar la hacienda. En general, comercializan el ganado en el campo por la escasa experiencia de venta en remates. Esta limitante se debe a una serie de factores que incluyen el escaso número de cabezas, que reduce la capacidad de competir y negociar, la baja calidad de la oferta, la incapacidad financiera y dificultades de logística para la comercialización. Estas limitantes los marginan de los sistemas comerciales , haciéndolos vulnerables a la especulación, que paga normales precios por debajo del mercado. A estas restricciones se agregan aspectos impositivos y previsionales. La consecuencia es una menor rentabilidad, que profundiza el subdesarrollo del sector (Rofman, A 1997). Las explotaciones agropecuarias aisladas necesitan para su crecimiento, dos soportes fundamentales. Uno es la existencia de un entorno institucional que les posibilite alcanzar oportunidades potenciales, y el otro es la búsqueda de esquemas y propuestas asociativas, que posibiliten alcanzar economías de escala (Márquez, S. 2004). El Estado, representado en sus instituciones nacionales y provinciales, busca brindar apoyo a este tipo de actividades, buscando institucionalidad legal, y un sentido de cooperación entre los agentes, abriendo un espacio para su participación. El objetivo del presente trabajo fue mejorar un sistema comercial para los pequeños y medianos productores ganaderos de Corrientes, a través del trabajo asociativo para la comercialización conjunta de su producción. Metodología El trabajo inicial estuvo orientado a fortalecer el enfoque institucional y organizativo para desarrollar un método de comercialización no habitual. Dentro del estrato de pequeños a medianos productores, el trabajo se orientó a aquellos cuyo ingreso principal proviene de la ganadería, aunque con limitaciones en cantidad de tierra, capital, acceso a la tecnología y a la información adecuada sobre mercados.
Proceedings of the 4th Brazilian Technology Symposium (BTSym'18), 2019
In recent years, project management in consulting firms has grown due to greater demands for good... more In recent years, project management in consulting firms has grown due to greater demands for goods and services. However, this growth has meant that due to inefficiencies in the management, delays in project delivery times are generated. In addition, the same situation occurs for performance of personnel’s competences, as well as in defining the scope of the project. Therefore, this article proposes a model for the application of Project Management Body of Knowledge (PMBOK) based on knowledge management, which consists of the following areas: stakeholder management, risk management, cost management, time management, human resources management, quality management, integration management, and scope management. To show the ease of use of this model, a case study was conducted in an engineering consulting firm. The results of the application of the model were successful: the delay in project delivery times was reduced by 70% and the risks that may exist during execution were reduced by ...
Advances in Manufacturing, Production Management and Process Control, 2019
One of the most important problems affecting companies that assemble and market vehicles is stock... more One of the most important problems affecting companies that assemble and market vehicles is stock depletion of finished products. Therefore, many small and medium-sized enterprises (SMEs) have attempted to manage this situation by using tools such as the Q mode, which continuously reviews inventories but does not indicate when and in what quantity a company must supply its sales outlets but requires a more complex level of supplier development and supply chain management efficiency than SMEs can achieve. Likewise, with our proposal we achieved a 50% decrease in stock depletion, based on an analysis of model results, with a confidence level of 95% and a certainty level of 75.30%, projecting a profit of 59000 soles with a return cost of 1.41 and a recovery period of 2 years and 4 months, ensuring both the sustainability and profitability of the proposal.
Colour polymorphism is a widespread phenomenon in natural populations of several species. In part... more Colour polymorphism is a widespread phenomenon in natural populations of several species. In particular, it is especially common on marine gastropod species from the genus Littorina. Recently, it has been argued that intrapopulation shell colour polymorphism in Littorina fabalis could be caused by negative frequency-dependent sexual selection via a mechanism of mate choice (indirectly estimated via negative assortative mating). Here we try to determine the existence of negative assortative mating in three species of the subgenus Neritrema (L. fabalis, L. obtusata, L. saxatilis) that share a similar shell colour polymorphism, in order to ascertain if this mechanism could represent an ancestral character in this subgenus that could be contributing to the maintenance of the colour polymorphism in each species. Here, we collected or reanalysed from previous studies a sample of mating pairs of the three species from seven locations from NW Spain and NE Russia and estimated assortative mating using the I PSI index. Our results show that all species and populations show a systematic tendency towards negative assortative mating when shell colour is grouped in the broad categories: 'light' and 'dark'. Although, a more detailed analysis of each colour individually suggests that shell colour may not be the main target of assortative mating, but perhaps physically linked to another trait or through pleiotropic effects. This hypothesis opens interesting new lines of research in Littorina snails.
Innovations in Corrosion and Materials Science (Formerly Recent Patents on Corrosion Science), 2019
Background: : Fractal dimension is a versatile method to study and evaluate corrosion from the po... more Background: : Fractal dimension is a versatile method to study and evaluate corrosion from the point of view of metallic conditions, namely: surface roughness, electrochemical measurements and microscopy images. Aluminum corrodes at different rates, under different pH electrolytes with or without the presence of chloride ions. Methods:: In this work, corrosion and the roughness for aluminum corrosion at different pH electrolytes: acid, with and without chlorides, neutral and basic solutions, It was measured using electrochemical and optic techniques. Results:: The results of Electrochemical Impedance Spectroscopy (EIS) and Noise Measurements (ENM), Digital Holographic Microscopy (DHM), Scanning Electron Microscope (SEM) micrographs and their respective Fractal Dimension analysis were obtained. Conclusions:: For the different experimental techniques and conditions, fractal dimension were presented, reflecting the surface condition of aluminum corrosion as a function of pH solution.
Scientific evidence on the efficacy and safety of dietary protein. protein diet and exercise Obes... more Scientific evidence on the efficacy and safety of dietary protein. protein diet and exercise Obesity has become a global pandemic, 2.8 million people die each year as a result of being overweight or obese, as declared by the World Health Organization (WHO). There are different approaches in the field of nutrition and physical activity to combat obesity. In the context of very low calorie diets (VLCD), we found the protein diet, a variety of ketogenic diet (KD) with a low fat content, according to the guidelines made by the commission and cooperation by the member states in the scientific examination of questions related to food (SCOOP) for the application of a very low calorie diet. The aim of this review is to provide scientific evidence to assess the effectiveness, safety and long-term maintenance of the effects of VLCD, and specifically protein diet, applied in the context of a multidisciplinary approach as the method Pronokal ® , on overweight and obesity and its relationship with exercise.
Resumen Durante la última década han v enido emergiendo numerosas inv estigaciones que han estudi... more Resumen Durante la última década han v enido emergiendo numerosas inv estigaciones que han estudiado distintos formatos de ejercicio con predominio cardio-respiratorio e intensificación de esfuerzos intermitentes. Esta modalidad de ejercicio es conocida por los acrónimos HIIT o HIT (High-Intensity Interv al Trainng; High-Intensity Intermittent Training o simplemente High Intensity Training) y otras denominaciones que esconden distintos formatos, pero cuy a característica común es la realización de repetidas series de esfuerzos de corta a larga duración, realizados a alta intensidad e intercalados por períodos de recuperación. Los formatos HIT son un potente estímulo de ejercicio cardiov ascular con efectos agudos y crónicos prometedores para distintos marcadores de salud y del rendimiento cardio-respiratorio. Conocer estos efectos puede ay udar a v islumbrar las posibles aplicaciones y utilidades en poblaciones sanas y con patologías cardiometabólicas. A demás, estos formatos pueden...
Revista de Psicopatología y Psicología Clínica, 2011
Resumen: La psicología basada en la evidencia es un modelo metodológico que pretende legitimar tr... more Resumen: La psicología basada en la evidencia es un modelo metodológico que pretende legitimar tratamientos y teorías que presenten pruebas empíricas que respalden sus resultados. Actualmente los tratamientos psicológicos que cumplen los requisitos derivados de este sistema son admitidos como tratamientos de elección en la mayoría de servicios públicos y privados de salud. El presente artículo pretende revisar los criterios para el diseño y evaluación de guías de tratamiento de las dos instituciones más relevantes en este ámbito, la American Psychological Association (APA) y el National Institute for Health and Clinical Excellence (NICE), exponiendo y comparando los listados actualizados de tratamientos psicológicos eficaces por trastornos. Concluimos señalando algunos de los aspectos positivos y negativos de este enfoque y realizando algunas propuestas de mejora, centrando nuestra atención en la futura adaptación para intervenciones con problemas psicológicos (no trastornos) y en otros ámbitos (educativo, intervención social). Palabras clave: Psicología basada en la evidencia; tratamientos psicológicos eficaces; artículo de revisión.
ICAR '05. Proceedings., 12th International Conference on Advanced Robotics, 2005.
In this paper we will present a new - application oriented - control method for the biped jump. W... more In this paper we will present a new - application oriented - control method for the biped jump. We shall be restricting our study to the vertical jump with both feet together and legs placed exactly side by side, and with the robot moving in the sagittal plane. The control method is based on the sliding mode technique. We will
2005 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2005
In this paper the problem of the vertical jump for humanoid robots is treated. A simplified model... more In this paper the problem of the vertical jump for humanoid robots is treated. A simplified model is used which captures the fact of the legs moving exactly side by side and that fixes the upper body in a given configuration. Then a simple control scheme based on sliding modes is presented. The vertical jump is executed maintaining the center
Every closed nonorientable 3-manifold A4 can be obtained as the union of three orientable handleb... more Every closed nonorientable 3-manifold A4 can be obtained as the union of three orientable handlebodies V,, V,, V, whose interiors are pairwise disjoint. If gi denotes the genus of K, g, <g, <g,, we say that A4 has tri-genus (gi, g,, g3), if in terms of lexicographical ordering, the triple (gi, g,, g3) is minimal among all such decompositions of A4 into orientable handlebodies. We relate the tri-genus of M to the genus of a surface that represents the dual of the first Stiefel-Whitney class of M. This is used to determine g, and g2.
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Papers by victor nuñez