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Now showing items 21-40 of 5894

Variabilidad de los sistemas intensivos de producción porcina de la región de la Piedad Michoacán

Flores Padilla, Juan Pablo (Universidad Michoacana de San Nicolás de Hidalgo, 2005-09)

The study was carried out in seven pork production systems that are consist for three places, located in La Piedad Michoacán, with a total 20688 sows. The objective gives to confirm the variability in pork production ...
Estudio interfacial y evaluación mecánica durante la unión de carburo de tungsteno y níquel empleando una aleación de cobre

Ceja Cárdenas, Leonel (Universidad Michoacana de San Nicolás de Hidalgo, 2005-09)

Tungsten carbide (WC) is a hard ceramic, capable of supporting large compressions, as well as having good wear resistance and oxidation at temperatures high, coupled with the ability to withstand sudden temperature changes, ...
Incremento en la trabajabilidad del concreto hidráulico elaborado con agregados pétreos locales y fluidificado con ceniza

Chávez García, Hugo Luis (Universidad Michoacana de San Nicolás de Hidalgo, 2005-09)

This research addresses the workability of cement concrete added with Ashes. The concrete was designed by the method of the American Concrete Institute (ACI), [2] because this usually allows higher ratios of water / cement ...
El método circular en el problema de Waring

García Hernández, Víctor Cuauhtémoc (Universidad Michoacana de San Nicolás de Hidalgo. Universidad Nacional Autónoma de México, 2005-09)

Additive problems, perhaps by their simple nature, appear in many branches of mathematics. For the analytical theory of numbers, the process of solving additive problems has been the main axis in the development of important ...
Dinámica de sistemas para el análisis de mercados eléctricos a largo plazo

Salazar Espino, Moisés (Universidad Michoacana de San Nicolás de Hidalgo, 2005-09)

During the last decade, the electric utility has been restructuring the way of operating its power market, going from a vertically integrated market to an open market, where the degree of competitiveness and deregulation ...
Respuesta inmune a la vacuna inactivada de hepatitis A en niños infectados con el virus de inmunodeficiencia humana tipo 1

García Juárez, Ireri (Universidad Michoacana de San Nicolás de Hidalgo, 2005-09)

Hepatitis A virus (HAV) causes important mobility and mortality in risk groups. In HIV infected patients it’s been documented persistent infection. The Inmunosupretion caused by the HIV virus diminished the host capacity ...
Análisis: la conveniencia económica de la adquisición de una franquicia en México

Manjarrez Acevedo, Rebeca (Universidad Michoacana de San Nicolás de Hidalgo, 2005-10)

In the present work appears an analysis from all elements that involved in making decisions, about the acquisition of a franchise, like a way of making business, offers safetier and success than an independent business. ...
Cinemática del robot manipulador helicoidal RPSP

García Lara, Oracio (Universidad Michoacana de San Nicolás de Hidalgo, 2005-10)

Currently, there are some screw mechanisms responsible for the development of tasks in transporting objects. The mathematical algorithm to obey these mechanisms was raised by the French mathematician and economist Benjamin ...
Electrodinámica cuántica escalar perturbativa y no perturbativa

Concha Sánchez, Yajaira (Universidad Michoacana de San Nicolás de Hidalgo, 2005-10)

We can divide the fundamental particles into two categories, fermions and bosons. The fermions are particles that obey the principle of exclusion of Pauli and possess semientero spin ѕ = ɳ + ½, where ɳ = 0, 1, 2, ..., that ...
Análisis del arranque de motores de inducción de gran capacidad conectados a redes de distribución usando el dominio armónico extendido

Maldonado Paleo, Jesús (Universidad Michoacana de San Nicolás de Hidalgo, 2005-10)

Tools based on the expansion of functions through orthogonal series have played an important role in solving a wide range of problems, both physical and design-related. In recent years, such tools have been applied to the ...
Estudios sobre la regulación por fosforilación de la proteína PSIF de humano

Farias Escalera, Andrea (Universidad Michoacana de San Nicolás de Hidalgo, 2005-10)

One of the genes involved in the regulation of the cell cycle is the psif gene. This gene has a transcriptional expression pattern limited to the G2 / M transition of the cell cycle, and its absence decouples the division. ...
Papel de la dopamina estriatal sobre la facilitación del aprendizaje egocéntrico mediado por el abatimiento de serotonina

Anguiano Rodríguez, Patricia Balbina (Universidad Michoacana de San Nicolás de Hidalgo, 2005-10)

Striatum has been related with the organization of procedural learning and memory, as well as, with the egocentric learning organization. It has been showed that a facilitation of egocentric learning results from the ...
Aplicación de un método recursivo para el diseño riguroso de redes de intercambio de calor

García Hernández, Juan Manuel (Universidad Michoacana de San Nicolás de Hidalgo, 2005-10)

This paper presents a hybrid approach, based on a combination of mathematical programming techniques and heuristic rules, for optimal synthesis of Heat Exchange Network (RIC) including the rigorous design of heat transfer ...
El interés económico de la política exterior de Estados Unidos hacia México. 1970-1976

Araiza de Olarte, Leticia (Universidad Michoacana de San Nicolás de Hidalgo, 2005-11)

The importance of the economic development of the nations starting from the second world war, makes indispensable the study of the economic factors and the acting of the foreign policy of each country. In the relationship ...
Teorías de incertidumbre en la selección de estudiantes de alto rendimiento

Chávez Rivera, Rubén (Universidad Michoacana de San Nicolás de Hidalgo, 2005-11)

In this work show methodological for the evaluation of the humans recourse participants in the Chemical Olympiad of Mexico, through of the application of the uncertainty theory, that to be based in the determination of the ...
Modelo de mejora continua para el caso del estacionamiento "La Planta"

Sotomayor García, María Gabriela (Universidad Michoacana de San Nicolás de Hidalgo, 2005-11)

In this paper a plan to through Continuous Improvement operate efficiently and effectively the parking "Plant" develops. This work consists of four chapters: In chapter 1, the current state of the studio system in which a ...
Sistema de pago de leche según su calidad

Martínez Beiza, Isidoro (Universidad Michoacana de San Nicolás de Hidalgo, 2005-11)

During the last years the importance of milk quality on the dairy industry ha been highlighted, in which awards and penalties shemes have contributive to this quality improvement. Considering this panorama, the objective ...
Síntesis del Garnet de itrio-aluminio y obtención de fibras mediante el método de extracción en fase líquida

López Juárez, Rigoberto (Universidad Michoacana de San Nicolás de Hidalgo, 2005-11)

The Yttrium Aluminum Garnet (YAG), is widely used in the production of systems solid state laser, in coatings of electronic devices such as phosphorus to CRTs and lately it has been considered as a good material for high ...
Comprensión perceptual de audio digital

Gamboa Guzmán, Luis Eduardo (Universidad Michoacana de San Nicolás de Hidalgo, 2005-11)

This document presents the implementation of a perceptual CODEC that uses as input an uncompressed file sampled at 44100Hz, quantized at 16-bits, stereo. The waveform is processed in blocks of 512 samples and transformed ...
Simulación de ráfagas de viento y sus efectos sobre estructuras flexibles

Elvira Ceja, Salvador (Universidad Michoacana de San Nicolás de Hidalgo, 2005-11)

This work describes the main parameters that influence eolic actions, among these, the laws of variation of the speed with height, the turbulence indexes and wind spectra that propose the following codes: ASCE7-98 (United ...

Now showing items 21-40 of 5894

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