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1
objeto de conferencia
Pollutants inside at houses are smoking, gas combustion, use of solvents, household cleaning chemicals, emissions from building materials, and contamination of the exterior aggravates the inside of the house. In this article, we conducted a study to select the best air purifier equipment for an urban house. The selection was carried out by applying the analytic hierarchy process (AHP) methodology. In this study, three alternatives were proposed for the evaluation of the air purifier equipment: Bap1700, Bap600 and Bap706; which were ranked according to the criteria: scope, characteristics, and model. To carry out the selection using AHP, a panel of four experts were selected for this study. In this paper, we determined that the best air purifier equipment was the A1 alternative: Air Purifier Bap1700.
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artículo
The development of new processes in the textile industry entails designing methodologies to select adequate supplies that fit these new processes requirements. This paper presents a methodology used to select a textile binder that fulfill technical specifications of a new process to produce nonwoven fabrics, highlighting mainly its ability to form a protective film on the textile fibers and cohesion them without staining, weakening or breaking them. The proposed methodology involves three major phases: (1) consulting textile experts, (2) laboratory tests, and (3) factor weighting. The results indicate that there are two products that can be used in this new process: Arkofil and Size plus AC.
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El presente Informe de Ingeniería Titulado “Términos de referencia para el proceso de selección de la formulación del estudio a nivel de perfil para el proyecto mejoramiento del camino vecinal Shanao – Pinto Recodo y Anexos”; es la ampliación y mejora del trabajo escalonado presentado y aprobado por el suscrito en la asignatura de Elaboración de Proyectos de Inversión Pública, del XI Curso de Complementación Académica 2009-I/FIC de la UNSM-T; Proyecto que se ubica en la jurisdicción del distrito de Pinto Recodo y distrito de Shanao; Provincia de Lamas, Región San Martin. El Informe se desarrolló para que el Suscrito opte el Título Profesional de INGENIERO CIVIL; y los Términos de Referencia (TDR) mencionados, para que la Entidad, Municipalidad Distrital de Pinto Recodo (MDPR) seleccione al proveedor de servicio o Consultor encargado de formular su Perfil Técnico; co...
4
artículo
Dearth of information exists on the effects of planting dates and genotypes on grasshopper (Zonocerus variegatus L.) infestation and dry matter accumulation in the root organ of cassava. An experiment was conducted at the School of Agriculture and Food Sciences Experimental site of Njala University site during 2007/2008 and 2015/2016 cropping seasons. This study assessed the effects of planting date and cassava genotypes on grasshopper infestation and root dry matter accumulation in cassava. The experiment utilized four cassava genotypes (Cocoa, SLICASS 1, SLICASS 4 and SLICASS 6) and three planting dates (June, September and December) laid out in a Randomized Complete Block Design (RCBD) with three replications. Findings showed that the incidence and severity of grasshopper attacks, as well as root dry matter contents were significantly (p<0.05) different between variety and planting...
5
artículo
Gas sensors are fundamental for continuous online monitoring of volatile organic com-pounds. Gas sensors based on semiconductor materials have demonstrated to be highly competitive, but are generally made of expensive materials and operate at high temperatures, which are draw-backs of these technologies. Herein is described a novel ethanol sensor for room temperature (25◦C) measurements based on hematite (α-Fe2O3 )/silver nanoparticles. The AgNPs were shown to increase the oxide semiconductor charge carrier density, but especially to enhance the ethanol adsorption rate boosting the selectivity and sensitivity, thus allowing quantification of ethanol vapor in 2–35 mg L−1 range with an excellent linear relationship. In addition, the α-Fe2O3/Ag 3.0 wt% nanocomposite is cheap, and easy to make and process, imparting high perspectives for real applications in breath analyzers and/or s...
6
artículo
Is knowned that amnesiac process is one of more important areas of de neuropsychological exploration and many investigators have made explicative propositions about amnesiac disorders. The present study present normative dates that are a consequence of people in that age.
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artículo
Is knowned that amnesiac process is one of more important areas of de neuropsychological exploration and many investigators have made explicative propositions about amnesiac disorders. The present study present normative dates that are a consequence of people in that age.
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9
artículo
Many public school buildings located in seismic areas were designed with obsolete criteria and built with an improper quality control. Faced with the necessity of mitigating future consequences, retrofitting techniques have been suggested with the purpose of obtaining acceptable seismic performances. The selection of the best reinforcement techniques among all alternatives available is a complex task due to the variety of decision factors that have an influence over the final decision. This task is even more difficult when the current seismic reinforcement guidelines or codes do not propose a rational methodology selection. The objective of this investigation is to propose a methodology that improves the selection of seismic reinforcing techniques with a transparency approach. This methodology consists in identifying the decision-making processes and decision criteria of the multi-criter...
10
artículo
The present work reports the successful synthesis of a novel Pb2+ ion-imprinted polymer (Pb-IIP) based on a rhodizonate-like selective ligand by precipitation. Three functional monomers, namely acid acrylic (ACRY), 2-acrylamido-2-methylpropane sulfonic acid (AMPSA) and allylamine (ALLY), were chosen by computer simulation using density functional theory (DFT). The materials obtained were applied for the selective removal of Pb2+ from aqueous solutions and were characterized by Fourier transform Infra-red (FTIR), scanning electronic microscopy (SEM) and flame atomic absorption spectrometry (FAAS). The results obtained from the adsorption experiments performed under optimal conditions were in good agreement with the computational design and showed that IIP-AMPSA exhibited a relatively higher adsorption capacity for Pb2+ (51.84 mg g?1) than IIP–ACRY (31.02 mg g?1) and IIP-ALLY (12.90 mg g...
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objeto de conferencia
This work was supported by Italian National Council Researches by Joint Project n.1 of the CNR/SAV Agreement 2010/2012 and under project CNR RSTL n.0042.0005; by Joint Project n. 2 of the CNR/CONCYTEC (Perù), Agreement 2009/2011 Slovak Research and Development Agency under the contract n. SRDA-0252-10; the Scientific Grant Agency No. 2/0166/11 and by the Operational Programme Research and Development through the project: Centre of Excellence for Integrated Research of the Earth's Geosphere (ITMS: 26220120064), which is co-financed through the European Regional Development Fund
12
artículo
Acknowledgments Mr. Jordán-Suárez thanks the financial support given by the Ministry of Education of Peru (MINEDU) through the project 179-2015-FONDECYT-DE for doctoral studies in Food Sciences at UNALM. The authors acknowledge the facilities provided by the Center of Spectroscopy and Electron Microscopy (CESMI) of the University of Concepcion and the support provided by Dr. Gladys Ocharan for the SEM-EDS images analysis in Lima.
13
artículo
This work investigates the timing, paleoclimatic framework and inter-hemispheric teleconnections inferred from the glaciers last maximum extension and the deglaciation onset in the Arid Tropical Andes. A study area was selected to the northeastward of the Nevado Coropuna, the volcano currently covered by the largest tropical glacier on Earth. The current glacier extent, the moraines deposited in the past and paleoglaciers at their maximum extension have been mapped. The present and past Equilibrium Line Altitudes (ELA and paleoELA) have been reconstructed and the chlorine-36 ages have been calculated, for preliminary absolute dating of glacial and volcanic processes. The paleoELA depression, the thermometers installed in the study area and the accumulation data previously published allowed development of paleotemperature and paleoprecipitation models. The Coropuna glaciers were in maximu...
14
tesis de grado
La presente investigación tuvo como objetivo general describir las experiencias de los responsables de selección de personal en la evaluación de candidatos y en el afrontamiento de estereotipos en una empresa retail de electrodomésticos, para lo cual se utilizó como instrumento de recolección de datos a una entrevista semi estructurada aplicada a los encargados de este proceso, consiguiendo como resultado que han tenido algunas experiencias donde se evidencia que, la selección de personal, se ve comprometida a sesgos que ponen en duda la objetividad; así como también, el hecho que se dé el ingreso al proceso a candidatos por sugerencias y no por méritos propios, también han existido experiencias donde los procesos causan inquietud y asombro ante las respuestas y comportamientos de algunos candidatos durante su evaluación, por otro lado, podemos mencionar que la vasta experie...
15
artículo
This research was funded by a National Science Foundation IOS-0940466 grant to KH and a UNESCO-L’Oreal-CONCYTEC 001-2009-L’Oreal fellowship to PAT. Laboratory work was funded by grants from the Secretar?´a de Educacio´n Superior, Ciencia, Tecnolog?´a e Innovación (SENESCYT, Arca de Noe´ Initiative) and a Pontificia Universidad Católica del Ecuador (PUCE-DGA) grant to SRR. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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tesis de grado
La investigación se realizó en una empresa ubicada en la región Lambayeque, dedicada a producción y comercialización de papel higiénico institucional, cuya problemática es la baja productividad de su proceso productivo, debido a los paros repetitivos y repentinos de las maquinarias, generados por una inadecuada gestión de mantenimiento. Es por ello, que el objetivo general del estudio fue mejorar la gestión de mantenimiento para aumentar la productividad del proceso de elaboración de papel higiénico institucional. Se realizó un diagnóstico del proceso productivo, que consistió en la toma de tiempos de cada actividad, utilizando como herramientas de apoyo un cronómetro y la metodología Mundel; además, se aplicó una lista de verificación de la metodología 5S, un análisis de causa raíz, análisis de criticidad y se calculó los indicadores de producción y productivida...
17
tesis de maestría
Los reservorios de petróleo y gas en todo el mundo a menudo tienen estructuras geológicas estratificadas debido a procesos sedimentarios a lo largo del tiempo geológico. Esta estratificación dificulta la evaluación geológica de cada capa, ya que a menudo se tratan a todas como un reservorio independiente. Esto complica la comprensión de los reservorios y amplía el horizonte de análisis e investigación. Las pruebas de presión convencionales se realizan de manera conjunta a todos los reservorios, generando incertidumbre en las estimaciones de las presiones dinámicas, propiedades petrofísicas y la caracterización de los reservorios por capa, debido a que todas las capas se consideran como una sola, a pesar de que pueden tener diferentes características. El monitoreo de reservorios multicapa se centra en evaluar el comportamiento de cada capa de manera individual. Esto incluye...
18
artículo
Abstract Increase of socio-environmental conflicts during the planning or execution of projects makes social impact assessment is increasingly necessary and objective in order to prevent potential social conflicts. In this paper, we present a study to select the best alternative methodology available and applicable to social impact assessment (SIA) on projects and programs. The selection was conducted using the methodology of analytic hierarchy process (AHP). In this study four alternative methods for social impact assessment were proposed: Delphi, AHP, FAHP and Grey clustering, which were ranked according to criteria: Quantification, robustness and standardization. To make the selection using AHP, we provided of a panel of four experts selected for this study. The results showed that the best method for social impact assessment is the Grey clustering complemented with Delphi method and ...
19
tesis de grado
Este trabajo de investigación propone la mejora de gestión de inventarios de la empresa Importaciones y Distribuciones Granados SRL, en donde se identificaron problemas acerca de la rotura de stock de un 33% ocasionando un ingreso no percibido de S/1 012 898,69, tiene un nivel de servicio del 84%, la empresa posee baja rotación de productos, esto simboliza un 33% del dinero paralizado, teniendo un total de ingresos no percibidos de S/1 301 092,45. Se tiene como principal objetivo, mejorar la gestión de inventarios de la empresa Importaciones y Distribuciones Granados SRL para disminuir los ingresos que no son percibidos. Se desarrollo la clasificación ABC a los repuestos y se procedió a calcular indicadores actuales; para la selección del modelo se calcularon los costos de los modelos Q y P, además se realizó una matriz de enfrentamiento para determinar el modelo a utilizar, con...
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tesis de grado
La presente investigación abarca la problemática de elegir componentes para computadoras de escritorio personales por parte de individuos con limitados conocimientos técnicos en tecnología. Se implementó una solución basada en tecnología a través de un sistema experto, el cual utilizó un sistema de recomendación como núcleo para el procesamiento de conocimientos. Para manejar eficientemente la carga de procesamiento, se emplearon microservicios, dividiendo así las tareas entre los diferentes segmentos de la arquitectura. Parte fundamental de este proceso fue la identificación de las variables esenciales que afectan la elección de los componentes de la computadora, las cuales sirvieron como base para elaborar las preguntas que guiarían la recolección de información necesaria. Estas preguntas fueron posteriormente validadas por expertos en el campo, y sobre esta base, se d...