Resultados de búsqueda - (sense OR (presente OR (compcppcppcppcppcppcpppdense OR compcppcppcppcppcppcpppdense)))

Reflexiones sobre la práctica docente en la educación en ciencias por Arizpe Islas, Jorge Luis, Flores Moreno, Norma Esthela

“…ABSTRACT This paper describes some of the issues that take place in the practices of the process teaching-learning of sciences (physics, biology and math) besides is about the tendencies that occur to get over it. This document presents some of the common errors that take place in a common day teaching and the way to get the solutions. …”
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Lipoinjection and Multiple Internal Cuts for Congenital Constriction Bands: A New Treatment Approach por Castro Govea, Yanko, Vela Martínez, Amin, Treviño García, Luis Alberto

“…We propose an alternative surgical procedure for the treatment of congenital constriction bands that obviates the need for Z-plasties and eliminates the constriction band. Methods We present the case of a 36-year-old woman with a congenital constriction band of the leg. …”
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Fundamental Analysis of the Perturbation Rejection Characteristics of Single-Input-Multiple-Output Systems Subject to Multiple Perturbations por Amézquita Brooks, Luis Antonio, Licéaga Castro, Jesús Ulises, Licéaga Castro, Eduardo, Martínez Vázquez, Daniel Librado, García Salazar, Octavio

“…This article analyzes the structural properties, stability, and perturbation rejection characteristics of SIMO systems. The article presents fundamental conclusions regarding the relationship of the main control loop and the perturbation rejection characteristics of the secondary outputs. …”
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Fluctuations in phenolic content, ascorbic acid and total carotenoids and antioxidant activity of fruit beverages during storage por Castro López, Cecilia, Sánchez Alejo, Ernesto Javier, Saucedo Pompa, Saul, Rojas, Romeo, Aranda Ruiz, Juana, Martínez Ávila, Guillermo Cristian Guadalupe

“…The influence of storage temperature (4, 8 and 11 °C) during the product shelf-life (20 days) was evaluated. Pomegranate Juice presented the highest values for antioxidant activity by DPPH• assay (552.93 ± 6.00 GAE μg mL−1), total carotenoids (3.18 ± 0.11 βCE μgmL−1), and total phenolic content (3967.07 ± 2.47 GAE μg mL−1); while Splash Blend recorded the highest levels of ascorbic acid (607.39 ± 2.13 AAE μg mL−1). …”
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Numerical study on the combustion process of a biogas spark-ignition engine por Carrera, José, Riesco, José, Martínez, Simón, Sánchez, Fausto, Gallegos, Armando

“…The use of this fuel is also attractive from the standpoint of global warming because its ap- plication does not register a net emission of carbon dioxide into the atmosphere possible use for this fuel is to feed the spark-ignition internal combustion en- gines. In the present, there is little information available about the process of com- bustion in internal combustion engines fueled by biogas. …”
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Microstructural Development in a TRIP-780 Steel Joined by Friction Stir Welding (FSW): Quantitative Evaluations and Comparisons with EBSD Predictions por Medina, Gladys Perez, Ferreira, Hugo Lopez, Robledo, Patricia Zambrano, Pérez, Argelia Miranda, Valdés, Felipe A. Reyes

“…The present work describes the effect of FSW on the result microstructure in the stir zone (SZ), thermo-mechanically affected zone (TMAZ), heat affected zone (HAZ) and base metal (BM) of a TRIP-780 steel. …”
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Teoría de situación específica de autotrascendencia en personas dependientes del alcohol en proceso de recuperación por Rodríguez Puente, Linda Azucena, Alonso Castillo, María Magdalena

“…Objective: The purpose of this study is to present a theoretical derivation and propose a model on the theory of self-transcendence in persons recovering from alcohol dependence. …”
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Antibacterial and Antibiofilm Activity of Methanolic Plant Extracts against Nosocomial Microorganisms por Sánchez, Eduardo, Rivas Morales, Catalina, Castillo, Sandra, Leos Rivas, Catalina, García Becerra, Ledy Elizabeth, Ortiz Martínez, David Mizael

“…New alternatives for controlling infections have been proposed focusing on the therapeutic properties of medicinal plants and their antimicrobial effects. In the present study the antimicrobial and antibiofilm activities of 8 methanolic plant extracts were evaluated against clinical isolated microorganisms. …”
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Potential Mechanism of Action of 3′-Demethoxy-6-O-demethyl-isoguaiacin on Methicillin Resistant Staphylococcus aureus por Favela Hernández, Juan Manuel de Jesús, Clemente Soto, Aldo Francisco, Balderas Rentería, Isaías, Garza González, Elvira, Camacho Corona, María del Rayo

“…This molecular mechanism is not present in any antibacterial commercial drug and could be a new target for the development of novel antibacterial agents.…”
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Potential mechanism of action of meso-dihydroguaiaretic acid on mycobacterium tuberculosis H37Rv por Clemente Soto, Aldo Francisco, Balderas Rentería, Isaías, Rivera, Gildardo, Segura Cabrera, Aldo, Garza González, Elvira, Camacho Corona, María del Rayo

“…Results showed that the alpha subunit of coenzyme A transferase of M. tuberculosis H37Rv is present in both geraniol and 1-and 2-methylnaphthalene degradation pathways, which are targeted by MDGA. …”
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Flatness-based fault tolerant control por Martínez Torres, César, Lavigne, Loic, Cazaurang, Franck, Alcorta García, Efraín, Díaz Romero, David Alejandro

“…ABSTRACT This paper presents a Fault Tolerant control approach for nonlinear flat systems. …”
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Modified PEHPS medium as an alternative for the in vitroCulture of Giardia lamblia por Vargas Villarreal, Javier, Mata Cárdenas, Benito David, Hernández García, Magda Elizabeth, Garza González, Jesús Norberto, De la Garza Salinas, Laura Hermila, González Salazar, Francisco

“…Commercial culture media present interlot variations in biological activity.We have previously designed a homemade and economic culture medium, PEHPS medium, for the axenic cultivation of Entamoeba histolytica and Trichomonas vaginalis. …”
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Reliability of X7R Multilayer Ceramic Capacitors During High Accelerated Life Testing (HALT) por Hernández López, Ana María, Aguilar Garib, Juan Antonio, Guillemet Fritsch, Sophie, Nava Quintero, Román Jabir, Dufour, Pascal, Tenailleau, Christophe, Durand, Bernard, Valdez Nava, Zarel

“…It is known that the reliability of MLCCs depends on their composition, processing, and operating conditions. In this present work, we analyzed the lifetime of three similar X7R type MLCCs based on BaTiO3 by conducting High Accelerated Life Tests (HALT) at temperatures up to 200 ◦C at 400 V and 600 V. …”
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Dental iron precipitates in patients with Type 2 diabetes por Ortiz Arrambide, Miguel Ángel, Juarez Ibarra, Karla Isabel, Malagón Santiago, Guadalupe Ismael, Cruz Fierro, Norma, De la Garza Ramos, Myriam Angélica

“…Individuals with Type 2 DM are prone to present iron precipitates in predentin and circumpulpal dentin tissue. …”
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Characterization of critical stretch rate using outwardly propagating spherical flames por De la Rosa Urbalejo, Daniel, Martínez Martínez, Simón, Sánchez Cruz, Fausto

“…A mathematical expression was produced to determine the critical stretch at the specific conditions of the present work. Key words: laminar burning velocity, liquid fuels, gaseous fuels, premixed flames, critical stretch rate, extinction stretch rate…”
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Predicción de rugosidad en maquinado de aleación de Ti-6Al-4V usando redes neuronales por Escamilla Salazar, Indira Gary, Torres Treviño, Luis Martín, Zambrano Robledo, Patricia del Carmen, Pérez Villanueva, Pedro, González Ortíz, Bernardo

“…The aim of this work is to present a methodology for predicting the roughness (Ra) obtained from the machining of the Ti-6Al-4V, with a given confidence interval, and compare this results with an Artificial Neural Network (ANN), considering the cutting speed, feed and depth as input variables. …”
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Caracterización de las Propiedades eléctricas locales del CaCu3Ti4O12 por Valdez Nava, Zarel, Cheballah, Chafé, Laudebat, Lionel, Lebey, Thierry, Guillemet Fritsch, Sophie

“…ABSTRACT CaCu3Ti4O12 (CCTO) is a material that presents a colossal dielectric constant (>105). In this work, CCTO was synthesized by chemical coprecipitation and sintered at 1050°C. …”

Effect of AGTR1 and BDKRB2 gene polymorphisms on atorvastatin metabolism in a Mexican population por Herrera Gonzalez, Sarahï, Martinez Treviño, Denisse, Aguirre Garza, Marcelino, Gómez Silva, Magdalena, Barrera Saldaña, Hugo Alberto, Baltazar Reyes, Rafael

“…The frequency, pattern and impact of these polymorphisms vary among populations. In the present study, the pharmacokinetics and pharmacogenetics of atorvastatin (ATV) in a Mexican population were investigated. …”
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Adaptable Optical Fiber Displacement-Curvature Sensor Based on a Modal Michelson Interferometer with a Tapered Single Mode Fiber por Salceda Delgado, Guillermo, Martínez Ríos, Alejandro, Selvas Aguilar, S., Alvarez Tamayo, Ricardo Iván, Castillo Guzmán, A., Ibarra Escamilla, Baldemar, Durán Ramírez, Víctor M., Enríquez Gómez, L. F.

“…A compact, highly sensitive optical fiber displacement and curvature radius sensor is presented. The device consists of an adiabatic bi-conical fused fiber taper spliced to a single-mode fiber (SMF) segment with a flat face end. …”
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Perfil de expresión de P53 y CASPASA-3 en la capa granular externa del cerebelo neonatal humano. por Ruiz Holguín, Eduardo

“…Debido a que la relación entre los eventos apoptóticos presentes durante la neurogénesis y la maduración de la corteza cerebelosa posnatal en el humano no están completamente dilucidados, es necesario realizar más estudios para conocer el papel de otras vías de apoptosis además de la vía de p53. …”
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