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1
artículo
Publicado 2009
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This paper contributes to the reflection on the process of transition from analog television to digital television which is to be broadcasted in Peru and considers that digital television offers a better sound and image quality and less interference. The process of technological migration may take 1 O years. Peru has already opted for rhe Japanese standard HDTV, which among orher advanrages offers portable and mobile reception. Nonetheless, the high resolution relevision does not seem feasible not does ir make enrreprises more competitive. A question remains to be answered: "If the digital relevision will only serve ro have the same programs at a better resolution, what is the use of having so much invested in time and that the State, the privare entreprises and the public ha ve so much invested in money for such a change?" Bes...
2
artículo
Publicado 2009
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This paper contributes to the reflection on the process of transition from analog television to digital television which is to be broadcasted in Peru and considers that digital television offers a better sound and image quality and less interference. The process of technological migration may take 1 O years. Peru has already opted for rhe Japanese standard HDTV, which among orher advanrages offers portable and mobile reception. Nonetheless, the high resolution relevision does not seem feasible not does ir make enrreprises more competitive. A question remains to be answered: "If the digital relevision will only serve ro have the same programs at a better resolution, what is the use of having so much invested in time and that the State, the privare entreprises and the public ha ve so much invested in money for such a change?" Bes...
3
artículo
Publicado 2012
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Presently work is given to know the importance of the previous characterization of the diverse types of minerals of Fe. The importance of the metallurgical properties and its respective mineralogy characterization are important for the development of respective metallurgical processes appropriate. In this work, it is given to know mineralogy characterizations of diverse Minerals of Fe. These results can be useful, for example in the development of processes of direct reduction with Gas.
4
artículo
Publicado 2012
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Presently work is given to know the importance of the previous characterization of the diverse types of minerals of Fe. The importance of the metallurgical properties and its respective mineralogy characterization are important for the development of respective metallurgical processes appropriate. In this work, it is given to know mineralogy characterizations of diverse Minerals of Fe. These results can be useful, for example in the development of processes of direct reduction with Gas.
5
tesis de grado
Publicado 2025
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El presente trabajo de investigación tiene como objetivo el rediseño de la máquina de termofusión McElroy 618, con la finalidad de optimizar la fabricación de codos de 6 a 18 pulgadas en tuberías de polietileno de alta densidad (HDPE). Actualmente, dicha máquina presenta limitaciones en la alineación angular y en la independencia del cilindro hidráulico, lo que dificulta la producción eficiente de estos componentes. Para dar solución a este problema, se realizó un análisis detallado del funcionamiento del equipo y se diseñó un sistema de ajuste angular en la base de las mordazas, complementado por un sistema de elevación basado en un mecanismo de tornillo sinfín y corona. Este mecanismo incorpora un eje con rosca trapecial dispuesto de forma vertical, que permite regular el ángulo requerido para la fabricación de codos. Todo el sistema es accionado mediante un motor el...
6
artículo
Un problema en la enseñanza – aprendizaje del análisis químico instrumental es el alto costo de la instrumentación comercial, incluyendo aspectos de mantenimiento y servicio. Esto limita el acceso de los estudiantes a la operación directa de los diversos instrumentos, comprometiendo la calidad de su formación profesional. En este trabajo se describe detalladamente un espectrómetro de luz visible de 390 – 650 nanómetros, de fácil construcción, bajo costo, robusto y de altas prestaciones, adecuado para espectro-fotometría de absorción y fluorescencia moleculares y emisión atómica. El espectrómetro no tiene partes móviles y usa como detector una cámara Web conectada a una computadora personal, que permite la adquisición, presentación, procesamiento y registro de los espectros, a condiciones elegidas por el experimentador. El dispersor es la cara metálica interna de u...
7
artículo
Publicado 2014
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In Peru only treat 29.1% of urban domestic wastewater is performed. This treatment is carried out at 143 industries, pouring the rest into rivers, lakes and the sea, so it is necessary to give more importance to the management of water resources. The textile industry, which uses large amounts of dye pigments not properly treat their effluents, being part of the problem. The Fenton process is an alternative for the treatment of effluents from the dyeing process, the most important pollutant azo compounds. The Fenton process provides the ability to reuse and / or recycle water with high efficiency (86%) in a few minutes.
8
tesis doctoral
Publicado 1996
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El propósito de esta investigación es explicar cómo las imperfecciones crediticias afectan el crecimiento económico. La tesis contiene dos partes de equilibrio general dinámico para explicar las relaciones entre crecimiento, distribución de la riqueza, cambio estructural y aumento del crédito. En el segundo trabajo se explica la alta volatilidad de las tasas de crecimiento en países de ingreso medio debido a que se presentan equilibrios múltiples.
9
artículo
Publicado 2024
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El trabajo de investigación tuvo como propósito: desarrollar una prueba de diagnóstico temprano para quiste hidatídico en alpacas mediante la técnica de Enzyme Linked Inmunosorbent Assay (ELISA). Se utilizaron los métodos de electroforesis vertical, métodos serológicos de inmunodifusión de gel y la técnica de ELISA como prueba de diagnóstico. Para este proceso se accedieron a 8 muestras de quiste hidatídico de alpaca, seguidamente se determinó viabilidad de los quistes, observando al microscopio los protoescolisis y ganchos del Echinococcus granulosus. Luego se continuo con la caracterización de proteínas antigénicas, reconociendo al antígeno Ag5 (subunidades 67.72 y 55.44 KDa) y el antígeno AgB (subunidades 24.57, 16.79 y 12.10 KDa). Para determinar los anticuerpos policlonales anti quiste hidatídico, se inocularon antígenos de alpaca en 2 conejos y la verifica...
10
tesis de maestría
Publicado 2016
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We present in this thesis the results of the design and programming of a temporal anal- ysis tool for experiment data MINERVA Test Beam (TbTaTool), which receives pions and electrons in the energy range corresponding to the end of the interactions of neutrinos energy states with MINERvA detector. The TbTaTool is independent, flexible and adapt- able to other contexts where we need to analyze the distribution of events over time, because it has separated datasets’ production from the tool itself. Our tool has been applied to the data (Run 2 and Run 3) that the experiment has obtained in MTest at Fer- milab, focusing on the variables of frequency of spill of the particles (MI’s spill frequency), duration of spill (MI’s spill duration) and the profile over time of packets corresponding to the delivery of the particles (time profile). Our calculations show 0.01% of difference for the f...
11
tesis de maestría
Publicado 2016
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We present in this thesis the results of the design and programming of a temporal anal- ysis tool for experiment data MINERVA Test Beam (TbTaTool), which receives pions and electrons in the energy range corresponding to the end of the interactions of neutrinos energy states with MINERvA detector. The TbTaTool is independent, flexible and adapt- able to other contexts where we need to analyze the distribution of events over time, because it has separated datasets’ production from the tool itself. Our tool has been applied to the data (Run 2 and Run 3) that the experiment has obtained in MTest at Fer- milab, focusing on the variables of frequency of spill of the particles (MI’s spill frequency), duration of spill (MI’s spill duration) and the profile over time of packets corresponding to the delivery of the particles (time profile). Our calculations show 0.01% of difference for the f...
12
tesis de grado
Publicado 2023
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El suministro de agua de los ríos es utilizado y/o aprovechado mediante el diseño y construcción de elementos estructurales, que, mediante el tratamiento permiten llevar servicios hacia la ciudadanía, tales como; generación de energía eléctrica, agua potable, riego, entre otros. Estas estructuras son construidas bajo criterios de diseño de ingeniería; sin embargo, el deterioro en la calidad del agua producto de la gran cantidad de sedimentos que arrastran, han sido perjudiciales, disminuyendo la vida útil de las estructuras, rebasando su capacidad de diseño y/o generando sobrecostos por mantenimiento en el equipo electromecánico; ocasionando de esta manera, cortes y/o racionalización de los recursos de agua, energía eléctrica en la población. En ese contexto, nos centraremos en la evaluación del funcionamiento de la estructura del desarenador La Víbora, del proyecto Chi...
13
tesis de grado
Publicado 2019
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La construcción de grandes estructuras de enrocado, como: presas, depósitos de desmonte, stockpiles, entre otros, ha ganado popularidad en proyectos mineros alrededor del mundo durante los últimos años. Sin embargo, dado que todavía su diseño es en gran medida empírico y basado en el desempeño histórico de otras estructuras, el estudio de las propiedades geomecánicas de un enrocado tiene una importancia significativa para mejorar el entendimiento del comportamiento de este tipo de estructuras. La presente tesis desarrolla un estudio completo acerca de la caracterización de la resistencia al corte de enrocados. El estudio ha incluido una revisión del estado de arte tanto de los enfoques empíricos y experimentales existentes. Adicionalmente, ha considerado la aplicación de ambos enfoques en un caso de estudio real consistente en el diseño de una presa de enrocado con pantall...
14
artículo
Publicado 2010
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Advanced Oxidation Processes (AOX) are based on the in situ generation of hydroxyradicals (·OH), which have a high oxidation potential. In the case of Fenton processes !he generation of hydroxy radicals takes place by the combination of an oxidation agent (H202) with a catalyst (Fe(II)). These radicals are not selective and they react very fast with the organic matter,being able to oxidize a high variety of organic compounds. This property allows the degradation of pollutants into more biodegradable compounds, and,in some cases, their complete mineralization into C02 and mineral acids. Under optimal conditions, (pH=3, (Fe 2+] = 200 mg/L, [H2O2] = 3612 mg/L) the Fenton processes are able to reduce !he concentration of the organic matter present in the textile effiuent, up lo 97%.
15
artículo
Publicado 2010
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Advanced Oxidation Processes (AOX) are based on the in situ generation of hydroxyradicals (·OH), which have a high oxidation potential. In the case of Fenton processes !he generation of hydroxy radicals takes place by the combination of an oxidation agent (H202) with a catalyst (Fe(II)). These radicals are not selective and they react very fast with the organic matter,being able to oxidize a high variety of organic compounds. This property allows the degradation of pollutants into more biodegradable compounds, and,in some cases, their complete mineralization into C02 and mineral acids. Under optimal conditions, (pH=3, (Fe 2+] = 200 mg/L, [H2O2] = 3612 mg/L) the Fenton processes are able to reduce !he concentration of the organic matter present in the textile effiuent, up lo 97%.
16
artículo
Health care is an institutionalized activity under the control of the State. Current public policy offers benefits limited to scientific progress and the use of technology for its potential to solve highly complex problems. However, in public hospitals, the distance between the discourse and the concretion of care is observed, whose epitome is human praxis. This work is the result of a research project of the Master’s and Doctoral Program in Medical, Dental and Health Sciences of the National Autonomous University of Mexico (UNAM). Uses the ethnographic method in the clinical context. Findings open the discussion on the scope and implications of how technology is used in the clinical context. Currently, the use of technology is a topic of research in the Department of History and Philosophy of Medicine of the UNAM, coordinated by Professor Alfredo Paulo Maya.
17
artículo
Currently, due to various cases of corruption, various academic and non-academic spaces have focused on evaluating and understanding how public works contracting processes aredeveloped.Due to the discoveries of journalistic studies, in several countries, especially in the region, cases of corruption have been found in officials of all levels. Given this situation, an ethical evaluationis relevant and important.The present study seeks to understand, from a management and top management perspective, from sociology and neuroscience, the reason for the inappropriate behavior of the aforementioned public officials. This in a frame of affirmation that indicates that, if we do not take care of evaluating ethical and humanistic aspects, we will not be able to have a sustainable development in public and privatespaces.
18
artículo
Currently, due to various cases of corruption, various academic and non-academic spaces have focused on evaluating and understanding how public works contracting processes aredeveloped.Due to the discoveries of journalistic studies, in several countries, especially in the region, cases of corruption have been found in officials of all levels. Given this situation, an ethical evaluationis relevant and important.The present study seeks to understand, from a management and top management perspective, from sociology and neuroscience, the reason for the inappropriate behavior of the aforementioned public officials. This in a frame of affirmation that indicates that, if we do not take care of evaluating ethical and humanistic aspects, we will not be able to have a sustainable development in public and privatespaces.
19
artículo
Currently, due to various cases of corruption, various academic and non-academic spaces have focused on evaluating and understanding how public works contracting processes aredeveloped.Due to the discoveries of journalistic studies, in several countries, especially in the region, cases of corruption have been found in officials of all levels. Given this situation, an ethical evaluationis relevant and important.The present study seeks to understand, from a management and top management perspective, from sociology and neuroscience, the reason for the inappropriate behavior of the aforementioned public officials. This in a frame of affirmation that indicates that, if we do not take care of evaluating ethical and humanistic aspects, we will not be able to have a sustainable development in public and privatespaces.
20
tesis de grado
Publicado 2019
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In this paper, the main objective was the preliminary study of the High Speed Rail Line - LIFAVE, included in the Trujillo - Lima section, constituted under an integral approach in its development, which was based on the use of the hierarchical analytical process - PAJ, as a percentage measurement instrument between LIFAVE and road transport (conventional transport). The process was carried out in parallel under five fronts: the preliminary design of the LIFAVE was developed, which led to the use of thirteen digital elevation models (ASTER GDEM) designed by NASA and the Ministry of Economy, Trade and Industry of Japan (METI) ), then delimited and geo processed the data in the ArcGis and AutoCAD Civil 3D softwar, obtaining as a result the plant design of the LIFAVE axis; the socioeconomic study was carried out, considering six points of analysis (travel time, road safety, intermodality, s...
