- jacarandas 54 Guadalajara Jalisco
- 332-6776384
- Environmental Science, Renewable Energy, Solar Energy, Fossil Fuel, Diálogos, Humanities, and 19 moreGeography, History, Cell separation, Citrus, Estado, Flavor, Polyphenol, Wind Power, Turbine, Hydroelectricity, Computer Science, Physical Medicine and Rehabilitation, Paraplegia, Operability, Akkadian Language, Coptic (Languages And Linguistics), Fernando Pessoa, Chaos Magic, and Thelemaedit
- joven intelectual que le gusta aprender investigar y conocer todo tipo de materia economía sociedad inversión y sobretodo la ciencia y tecnologíaedit
- Oscar Lara edit
"Sierra, Elena" también ha firmado sus artículos como "Díaz Berrio, Sol, 1941-""Este Artículo pertenece a la sección La semana que viene.
"Sierra, Elena" también ha firmado sus artículos como "Díaz Berrio, Sol, 1941-""Este Artículo pertenece a la sección La semana que viene.
Research Interests:
The use of automated equipment such as the plasma cutter reduces manufacturing times, in addition to being more accurate in the cutting of a wide range of metals, the use of this type of device optimizes manufacturing processes in the... more
The use of automated equipment such as the plasma cutter reduces manufacturing times, in addition to being more accurate in the cutting of a wide range of metals, the use of this type of device optimizes manufacturing processes in the manufacture of equipment for processing raw materials from the agricultural sector, as well as electromechanical equipment and implements used in the agro-industrial sector. From the academic point of view, the use of this type of machine familiarizes future professionals with new generation equipment and reduces the duration of laboratory practices, which decreases the stress and anxiety conditions of the engineering students, improving their academic performance. Therefore, the objective of this research was to design a prototype plasma cutter, which was used for the practical activities of the electromechanical engineering student, for the evaluation of the efficiency of the prototype, the duration of the academic activities was quantified, as well ...
Research Interests:
Renewable energy, also called green energy, has reached 40% worldwide due to the fact that every year governments promote its development, which helps to reduce the burning of fossil fuels and CO2 emissions, the main causes of... more
Renewable energy, also called green energy, has reached 40% worldwide due to the fact that every year governments promote its development, which helps to reduce the burning of fossil fuels and CO2 emissions, the main causes of environmental pollution. Among the alternative sources of clean energy is solar energy, whose alternative is feasible in Ecuador, since being a tropical country allows the generation of electricity from solar radiation, which is estimated at 4.5 kw m2 d-1. The objective of this work was to design a solar energy module to partially replace the use of conventional energy sources and minimize CO2 emissions, in the operation of the monitoring and surveillance system of the University of the Armed Forces of Ecuador (ESPE) in Latacunga, Cotopaxi. The results found show that the solar modules used can generate a load of 100W per day, guaranteeing an energy supply of 4 hours. Although the operation of the solar panel system was optimal from the operational point of vi...
Research Interests:
The use of fossil and hydroelectric energy has led to the deterioration of natural resources due to problems of pollution and deterioration of water basins, which is why clean energy systems such as solar and wind power should be adopted... more
The use of fossil and hydroelectric energy has led to the deterioration of natural resources due to problems of pollution and deterioration of water basins, which is why clean energy systems such as solar and wind power should be adopted to make sustainable use of these resources in higher education systems where the environmental component is a transversal axis of the curriculum, Awareness of the use of this type of clean energy should be raised. In this regard, the University of the Armed Forces of Ecuador (ESPE) designed and evaluated a prototype wind turbine to provide energy in the areas of internal security, which would serve as a showcase to demonstrate the advantages and applicability of this type of energy in real situations. The aim of the wind turbine prototype was to provide reliable energy to the most remote and vulnerable areas or to systems that need constant energy in case of emergency due to the absence of the conventional distribution network. The results found sho...
Research Interests:
Research Interests:
Research Interests:
La Constitución Política de los Estados Unidos Mexicanos, es el máximo ordenamiento jurídico de nuestro país, en la cual están plasmados los derechos y obligaciones que tenemos como gobernados. También está considerada como la Ley... more
La Constitución Política de los Estados Unidos Mexicanos, es el máximo ordenamiento jurídico de nuestro país, en la cual están plasmados los derechos y obligaciones que tenemos como gobernados. También está considerada como la Ley fundamental que crea y organiza a los poderes públicos supremos de un estado, señalando sus facultades y obligaciones; así como el límite de su campo de acción; determinando los derechos, facultades y deberes del grupo social. Existen diferentes clases de constituciones:• Constituciones escritas• Constituciones no escritas• Constituciones rígidas• Constituciones flexiblesLa constitución, también consta de varias partes tales como:• Parte dogmática• Parte orgánicaHoy día los primeros 29 artículos contemplan los Derechos Humanos y sus Garantías. La constitución Política Mexicana está dividida en 9 Títulos, los cuales contienen 136 Artículos y 19 transitorios. El Primer Título del artículo 1º al 29 habla de los Derechos Humanos y sus Garantías; del artículo 3...
Research Interests:
Research Interests:
Research Interests:
El trabajo fue realizado en la Fundacion Salvadorena de la tercera edad (FUSATE) y esta referido al mantenimiento de la fuerza muscular y la importancia de la actividad fisica para la mejora de la calidad de vida del adulto mayor que... more
El trabajo fue realizado en la Fundacion Salvadorena de la tercera edad (FUSATE) y esta referido al mantenimiento de la fuerza muscular y la importancia de la actividad fisica para la mejora de la calidad de vida del adulto mayor que asistieron regularmente a las practicas realizadas en el ano 2012. En correspondencia con los resultados de lo investigado se elaboro un programa de ejercicios que se presenta en los anexos en el cual se plantean una serie de ejercicios fisicos indicados para mantener la fuerza muscula a fin de garantizar resultados optimos a largo plazo con una asistencia minima de 5 dias por semana.
Research Interests:
Research Interests: Humanities and Art
Research Interests:
Research Interests:
ABSTRACT
Research Interests:
Research Interests:
A complete review of the use of magnetic cell separation technology for preparation of cell samples for biological or clinical use is beyond the scope of this chapter. For example, a Pub Med search on the phrase magnetic cell separation... more
A complete review of the use of magnetic cell separation technology for preparation of cell samples for biological or clinical use is beyond the scope of this chapter. For example, a Pub Med search on the phrase magnetic cell separation in August 2006 listed over 1200 hits. However, ...
Research Interests:
Context-aware applications have been the focus of extensive research, yet their implementation in mobile devices usually becomes challenging due to restrictions of processing and energy. In this work, we present, demonstrate, and evaluate... more
Context-aware applications have been the focus of extensive research, yet their implementation in mobile devices usually becomes challenging due to restrictions of processing and energy. In this work, we present, demonstrate, and evaluate a mobile platform for real-time human activity recognition. The evaluation results indicate that the system can be implemented in real scenarios meeting accuracy, response time, and energy
Research Interests:
This paper presents ABLA, a novel multiobjective ant colony-based optimization algorithm to address the bin packing problem with load balancing. ABLA incorporates (1) a new probabilistic decision rule that builds solutions by making use... more
This paper presents ABLA, a novel multiobjective ant colony-based optimization algorithm to address the bin packing problem with load balancing. ABLA incorporates (1) a new probabilistic decision rule that builds solutions by making use of individual pheromone matrices for each objective function; (2) a new pheromone updating approach in which ants deposit variable amounts of pheromone; (3) two new local search methods to improve load balancing: LBH and LBH-AB; and (4) the Pareto dominance approach to select optimal solutions. ABLA is compared to a Multiobjective Max-Min Ant System (MO-MMAS) and an adapted multiobjective version of the First-Fit Decreasing (FFD) algorithm, which is the best known ρ-approximation algorithm for the bin packing problem. Results show that ABLA finds better solutions than both FFD and MO-MMAS, and that LBH and LBH-AB noticeably improve the load balancing across bins.
Research Interests: Mathematics, Computer Science, Ant Colony Optimization, Multiobjective Optimization, Probabilistic Logic, and 12 moreLocal Search, Mathematical Optimization, ANT COLONY, BIN packing, Ant system, Load Balance, Approximate Algorithm, Bin, Bin Packing Problem, Optimal Solution, Objective function, and optimal algorithm
The identification of psychological stress can provide important feedback in order to perform critical activities. While a certain amount of stress may increase performance, an overly stressful reaction may hinder it. Because subjective... more
The identification of psychological stress can provide important feedback in order to perform critical activities. While a certain amount of stress may increase performance, an overly stressful reaction may hinder it. Because subjective bias can make it difficult to accurately recognize psychological stress, it would be advantageous for an external system to perform the task instead. We present a platform for psychological stress detection using physiological sensors during a chess match. The sensors are inside an unobtrusive chest strap that can be worn by the player during a match. By playing games on an Android phone, the system can apply machine learning techniques to the player's vital sign data to give important feedback such as which moves caused the player to become stressed during a match.
Research Interests:
Research Interests:
... MÉDICO VETERINARIO ZOOTECNISTA PRESENTA Oscar Martínez Lara Directores de Tesis Dra. ... y Smith refieren las aglutinaciones específicas en sueros sanguíneos de los enfermos. Zammit en 1905 informa que las cabras transmiten la... more
... MÉDICO VETERINARIO ZOOTECNISTA PRESENTA Oscar Martínez Lara Directores de Tesis Dra. ... y Smith refieren las aglutinaciones específicas en sueros sanguíneos de los enfermos. Zammit en 1905 informa que las cabras transmiten la enfermedad al hombre surge el ...
Research Interests:
Research Interests:
Resumo: La Directiva Seveso II desarrolla las políticas encaminadas a la prevención de accidentes graves en actividades industriales con sustancias peligrosas ya la reducción de sus consecuencias para las personas, los bienes y el medio... more
Resumo: La Directiva Seveso II desarrolla las políticas encaminadas a la prevención de accidentes graves en actividades industriales con sustancias peligrosas ya la reducción de sus consecuencias para las personas, los bienes y el medio ambiente. En este ultimo ...
Research Interests:
Research Interests:
Research Interests:
Research Interests: Environmental Engineering, Civil Engineering, Mathematics, Statistics, Reliability Engineering, and 11 moreProbability Distribution & Applications, Artes, Maximum Likelihood, Estimation, Poisson Process, Moment method, Normal Distribution, Poisson Distribution, River Discharge, Maximum Likelihood Method, and Probability Distribution
Research Interests:
Research Interests: Geography and Humanities
The objective of this study was to compare the performance of two immunomagnetic separation technologies to deplete T cells from buffy coats of human blood. Specifically, two versions of the commercial MACS(R) Technology: MiniMACS and... more
The objective of this study was to compare the performance of two immunomagnetic separation technologies to deplete T cells from buffy coats of human blood. Specifically, two versions of the commercial MACS(R) Technology: MiniMACS and SuperMACS, and a prototype, flow-through system, the QMS, were evaluated. Peripheral blood mononuclear leukocytes (PBL) were isolated from buffy coats and an immunomagnetic separation of CD3(+) cells was conducted using company and optimized labeling protocols. To mimic peripheral blood containing bone marrow purged hematopoietic stem cells, HSC, CD34 expressing-cells (KG1a) were spiked into PBL prior to T-cell depletion once optimized depletion conditions were determined. Once the labeling protocol was optimized, the MiniMACS system performed well by producing a highly enriched CD3(+) fraction, and a respectable level of depletion of T cells and recovery of KG1a cells in the depleted fraction; an average log(10) depletion of T cells of 2.88 +/- 0.17 and an average recovery of the KG1a cells of 60.8 +/- 5.94% (n = 14). The performance of the SuperMACS system was very similar with an average log(10) depletion of T cells of 2.89 +/- 0.22 and an average recovery of KG1a of 63.1 +/- 8.55% (n = 10). In contrast, the QMS system produced an average log(10) depletion of T cells of 3.98 +/- 0.33 (n = 16) with a corresponding average recovery of 57.9 +/- 16.6% of the spiked CD34+ cells. The aforementioned QMS performance values were obtained using sorting speeds ranging from 2.5 x 10(4) to 1.7 x 10(5) cells per second. It is suggested that the lack of a 100% recovery of the unlabeled KG1a cells is the result of a previously reported "drafting" phenomena which pulls unlabeled cells in the direction of the magnetically labeled cells thereby resulting in loss of the unlabeled cells.
Research Interests:
Research Interests:
Cell populations can be enriched using a number of physicochemical methods based on characteristics, such as density, size, and volume. Centrifugation using density gradients is typically applied to isolate populations with similar... more
Cell populations can be enriched using a number of physicochemical methods based on characteristics, such as density, size, and volume. Centrifugation using density gradients is typically applied to isolate populations with similar characteristics. Cells obtained using these methods can be further authenticated using specific antibodies that react to markers on the cell surface, allowing the identification of cell subtypes.