1
artículo
Publicado 2007
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Se realizó un estudio descriptivo transversal, en diez Instituciones Educativas Nacionales del distrito de El Agustino– Lima, aplicándose un cuestionario a adolescentes hombres y mujeres (n=1109), indagando acerca de conocimientos de planificación familiar, métodos anticonceptivos y usos; infecciones de transmisión sexual, inicio de relaciones sexuales y comunicación familiar con los padres acerca de sexualidad. Se reveló conocimientos sobre sexualidad calificados como malo en un 50% (n=632) y muy malo 15.5% (n=172). El inicio de la vida sexual activa fue 17.9% (n=199), con una edad promedio de 14.5 años, de los cuales el 83% (n=165) han tenido relaciones sexuales de riesgo (sin protección de “preservativo”). La comunicación familiar global entre progenitores y adolescentes fue 19.4% (n=215) mala y 76% (n=843) muy mala. La comunicación familiar global entre progenitores ...
2
artículo
Publicado 2017
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The purpose of the present work is to determine the quality of five bodies of water within the Rimac river watershed, by analyzing the data provided by the Autoridad Nacional del Agua (ANA ‐ the National Water Authority) in its report on Technical Monitoring of Water Quality in the Rimac River Watershed (2013). These five bodies of water have been assigned to Category 1 A2 ("Domestic and Recreational Use") indicating that their water could be made potable through conventional treatment. The results can be used as a tool to evaluate the quality of bodies of water and facilitate their environmental management, by identifying those would be more prone to lose their qualification as Category 1 A2. Use of the Grey Clustering Analysis methodology and the Prati water quality index allowed us to carry out the analysis in an objective manner. The criteria for selecting the bodies of water was t...
3
artículo
Publicado 2017
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El presente trabajo tiene como finalidad determinar la calidad de cinco cuerpos de agua de la Cuenca del Río Rímac los cuales pertenecen a la Categoría 1 A2: " Poblacional y Recreacional" Aguas que pueden ser potabilizadas con tratamiento convencional, mediante el análisis de datos que la Autoridad Nacional del Agua ANA proporcionó en su informe de Técnico de Monitoreo de la Calidad del Agua en la Cuenca del Río Rímac en el año 2013, con la finalidad de brindar una herramienta que cuantifique la calidad de los cuerpos de agua y facilite la toma de decisiones en la gestión ambiental de estos mediante la identificación de aquel que sea más propenso a la pérdida de su calidad como Categoría 1 A2. La aplicación de la metodología de Análisis de Grey Clustering y el Índice de la calidad de agua de Prati, permitieron realizar el análisis de forma objetiva, el criterio para la...
4
artículo
Publicado 2017
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The purpose of the present work is to determine the quality of five bodies of water within the Rimac river watershed, by analyzing the data provided by the Autoridad Nacional del Agua (ANA ‐ the National Water Authority) in its report on Technical Monitoring of Water Quality in the Rimac River Watershed (2013). These five bodies of water have been assigned to Category 1 A2 ("Domestic and Recreational Use") indicating that their water could be made potable through conventional treatment. The results can be used as a tool to evaluate the quality of bodies of water and facilitate their environmental management, by identifying those would be more prone to lose their qualification as Category 1 A2. Use of the Grey Clustering Analysis methodology and the Prati water quality index allowed us to carry out the analysis in an objective manner. The criteria for selecting the bodies of water was t...
5
capítulo de libro
Partial hand and transradial amputations are among the most common levels of amputation. In the former case, a mechanical prosthesis is prescribed, while in the latter case either a mechanical or a myoelectric one are used depending on the patient’s preference and access to the technology. While a variety of prostheses designs are aimed to transradial amputees and plenty others are for partial hand amputations, like the 3D-printed open-source concepts that are activated by the user’s wrist, for a faster and more efficient treatment of hand amputations, one design should be adaptive for different levels of amputation without compromising the prosthesis performance. This work describes a powered prosthesis design with modular fingers and space constraints that allow it to be adapted to different levels of amputation. The prosthesis finger lengths could also be customized to user-specif...
6
objeto de conferencia
Se propone un diseño de una prótesis de mano destinada a amputados transmetacarpianos y propulsada por micromotores de CC. Además, se muestra un método para personalizar los dedos protésicos para que coincidan con una antropometría específica del usuario. Finalmente, se explica la selección de sensores y actuadores, y se prueba un esquema de control básico en el prototipo.
7
objeto de conferencia
Publicado 2017
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Se presenta un diseño de una prótesis de mano impresa en 3D para amputados transmetacarpianos y accionada por micromotores de CC. Se utilizaron mecanismos de articulación de cuatro barras para los movimientos de flexión de los dedos índice, medio, anular y meñique, mientras que para el pulgar se utilizó un mecanismo de engranajes cilíndricos y tracción helicoidal. Finalmente, se probó un esquema de control básico en el prototipo para la evaluación de velocidad y fuerza.
8
artículo
Publicado 2019
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‘Gradual’ vs ‘punctuated’ and ‘unidirectional’ (only lengthening) vs. ‘bidirectional’ (lengthenings and shortenings) modes of evolution are explanations that compete to explain adaptive changes of flower tube length in angiosperm. The nightshade genus Salpichroa Miers, with 21 species mostly growing in the tropical Andes of southern South America, has the opportune qualities of including nearly 15-fold inter-specific variation in corolla tube length, as well as one species that is a candidate for participating in evolutionary escalation with the longest-billed hummingbird, Ensifera ensifera. We reconstructed the phylogenetic relationships using five molecular markers, the two plastid markers trnD-trnT and trnL, and three nuclear markers, ITS and two COSII, and estimated divergence times of the genus in order to reconstruct the history of both corolla tube length and polli...
9
artículo
A novel methodology was employed to prepare new nanocomposites with photocatalytic properties based on Ce-doped TiO2 nanoparticles arranged over a layered silicate. The catalysts were porous materials formed by exfoliated silicate layers surrounded by anatase nanoparticles. In this way, the anatase was doped by different amounts of Ce, yielding to catalysts with light absorption properties on the visible region. The photocatalytic behavior was tested for different reactions: adsorption and photocatalysis, showing outstanding and promising results for the removal of bacteria by using solar light as an energy source. The influence of the physicochemical properties of the catalyst and the reaction parameters will be studied in detail to manage new catalysts for the disinfection of drinking water.
10
artículo
Publicado 2016
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CONCYTEC, DGI-PUCP, and IDI/IGI-UNI (Peru), by Latin American Center for Physics (CLAF), and by RAS and the Russian Ministry of Education and Science (Russia). We thank the MINOS Collaboration for use of its near detector data. We acknowledge the dedicated work of the Fermilab staff responsible for the operation and maintenance of the beam line and detector.
11
artículo
Publicado 2015
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This work was supported by the Fermi National Accelerator Laboratory under the U.S. Department of Energy (DOE) Award No. DE-AC02-07CH11359 which included the MINERvA construction project. Construction support also was granted by the United States National Science Foundation under Grant No. PHY-0619727 and by the University of Rochester. Support for participating scientists was provided by the NSF and DOE (USA); CAPES and CNPq (Brazil); CoNaCyT (Mexico); CONICYT (Chile); CONCYTEC, DGI-PUCP and IDI/IGI-UNI (Peru); Latin American Center for Physics (CLAF); the Swiss National Science Foundation; and RAS and the Russian Ministry of Education and Science (Russia). We thank the MINOS Collaboration for use of its near detector data. Finally, we thank the staff of Fermilab for support of the beam line and detector.
