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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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Enlace
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
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...
8
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.
9
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.
10
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...
11
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.
12
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.
13
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.
14
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.
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
Publicado 2010
Enlace
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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%.
17
artículo
This research is based on a framework of educational innovation by making use of Facebook as a pedagogical tool in teaching of Logical thinking course with the aim of moving the teaching practice in new learning environments, increase the interest, high motivation students and results in the assessment of learning. The sample was 80 students ( considered as users) of A and B sections of the Professional School of Accounting during the academic semester 2015- 11. In the frrst instance starts the development of the subject using standard strategies during the first unit; then, in units 2 and 3, use the social network Facebook asan educational tool. Through this space could create among members, open communication channels, sharing information in a dynamic and effective way to strengthen practices related to learning; class guides whose presentations were associated with the use of web 2.0 ...
18
artículo
The mathematical relationships obtained denote the complexity of the operation in the leached and adsorbed gold stage on activated carbon; since significant losses of gold in solution occur in real metallurgical operations. Similarly, in the adsorbed gold operation, it reveals its high kinetics at the beginning and tends to decrease as the process progresses; eventually reaching the maximum gold load that the carbon can accommodate, and then showing the opposite trend. Furthermore, varying the concentration of carbon affects the adsorption operation; that is, the kinetics of gold adsorbed on carbon decreases over time, but the operation has higher kinetics with a larger volume of carbon during adsorption. The mentioned aspects are made possible by establishing the respective mathematical model of gold in barren solution and gold loaded on carbon; then optimizing with Solver - an Excel to...
19
artículo
Social innovation is recognized by multilateral organizations as a way to cope creatively and collaboratively with social demands that are not satisfied, neither from the public nor from the private. This challenge requires management reliable relationship between actors with diverse and sometimes conflicting interests. In this sense, the social function of public relations (PR) can provide an important service to prevent resistance to social changes that involve innovation processes. The literature consulted shows that theorizations on social innovation, recommend cultivating relational capital and theories and models PR provide methods and techniques to reliably achieve said capital. A documentary investigation and a case study based on the participatory-action-research that is the basis of a theoretical prot-model ofintervention of reliable PR in social innovation processes. It’s a ...
20
tesis de maestría
Publicado 2021
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Basado en los datos de observación de alta precisión GNSS y el cambio de coordenadas de la estación de monitoreo CORS antes y después del terremoto 8.0 de Perú de 2019, el autor desarrolló el software de análisis de deformación de la superficie basado en el software de procesamiento científico, que tiene valor científico y práctico en la investigación del epicentro del terremoto, magnitud y geodinámica. Se muestran los resultados obtenidos utilizando el software científico de procesamiento GNSS PANDA, un paquete de precisión para el análisis de datos GNSS, desarrollado por la Universidad de Wuhan, China. Los resultados son de alta precisión en el orden de los milímetros. Los resultados obtenidos tienen un desplazamiento de alrededor de 2 cm en las estaciones GNSS cercanas al terremoto, al noroeste.
