Resultados de búsqueda - (peso OR (presente OR (compcppcppcppcppcppcppcpppcpenso OR compcppcppcppcppcppcppcpppcpenso)))

Comparative study of Ni-W/CeO2, Ni-W/y-Al2O3 and Ni-W/HT catalysts for H2 production by steam reforming of bioethanol por Hernández, Paz, Fernández, Arturo, Messina, Sarah

“…Nickel content was varied from 10, 15 and 30% with 1% W. The catalyst that presented the highest catalytic activity and selectivity to hydrogen was 10% Ni-W/HT. …”
Enlace del recurso

Identificación de TNF-α E IL-4 mediante IHC en granulomas de conejos infectados naturalmente con encephalitozoon cuniculi. por Salinas Navarro, Ivone

“…Este trabajo se enfocó en la detección de la presencia de las citocinas, TNF-α e IL-4, en los granulomas presentes en cerebro y riñón de conejos positivos, por medio de la técnica inmunohistoquímica y su comparación en animales inmunosuprimidos mediante Dexametasona. …”
Enlace del recurso

Failure analysis of the fasten system of wheels used in mining pickup trucks por Artigas, Alfredo, Monsalve G., Alberto, Colás Ortíz, Rafael, Garza Montes de Oca, Nelson Federico

“…The reasons that promote the development of this kind of failure are presented and discussed in this investigation. © 2017 The Authors. …”
Enlace del recurso

Electrochemical Evaluation of a Stainless Steel as Reinforcement in Sustainable Concrete Exposed to Chlorides por Santiago Hurtado, Griselda

“…For this research three concrete mixtures were produced, the first concrete was made with 100 % cement CPC 30R, the second mixture was considered sustainable concrete because using 80 % of cement CPC 30R and 20 % of silica fume and the third mixture was elaborated with 80 % of cement CPC 30R and 20 % of fly ash, these mixtures were designed according to the method ACI 211.1, in the specimens were embedded bars of AISI 304 stainless steel and AISI 1018 steel, the specimens were exposed in a solution at 3.5 % of NaCl, simulating a marine environment, for to evaluate the corrosion resistance were used electrochemical techniques of Half-Cell Potential, standard ASTM C-876-09 and the Linear Polarization Resistance, standard ASTM G59, results Ecorr and Icorr after 180 days of exposure show that, the best performance was presented concrete specimens produced with 20 % silica fume and reinforced with AISI 304 stainless steel, with corrosion potential (Ecorr) indicating a 10 % probability of corrosion and Icorr values that indicate a passivity level of corrosion.…”
Enlace del recurso

Angiosarcoma of the nasal cavity: a case report por Treviño González, José Luis, Santos Lartigue, Ramiro, González Andrade, Baltazar, Villagómez Ortiz, Vicente José, Villegas, Mario, Venegas García, Erving

“…Since 1977, only 16 cases have been reported. We present a 33-year-old male with spontaneous epistaxis that was refractory to cauterization. …”
Enlace del recurso

US Natural Gas Market Classification Using Pooled Regression por Kalashnikov, Vyacheslav V., Pérez Valdés, Gerardo A., Matis, Timothy I., Kalashnykova, Nataliya I.

“…Econometric studies about natural gas emerged as an important area of study since natural gas may now be sold and traded in a number of stock markets, each one responding to potentially different behavioral drives. In this work, we present a method to differentiate sets of time series based on a regression model relating price, consumption, supply, and other factors. …”
Enlace del recurso

Developing a mixed reality assistance system based on projection mapping technology for manual operations at assembly workstations. por Rodríguez Puebla, Leonardo Vinicio

“…In this scenario, virtual and augmented realities can offer significant advantages to support the human operator in manual operations. This research work presents the development of a mixed (virtual and augmented) reality assistance system that permits real-time support in manual operations. …”
Enlace del recurso

Recent Advances in Synthesis and Properties of Hybrid Halide Perovskites for Photovoltaics por Vidyasagar, C. C., Muñoz Flores, Blanca M., Jiménez Pérez, Víctor Manuel

“…Concerning the above facts, a simple low-cost model called ‘‘dispersed photovoltaic cells’’ is presented. Keywords Perovskites Solar cells Organic–inorganic perovskites Synthetic routes Fluorescence…”
Enlace del recurso

Uridine 5'‑diphospho‑glucronosyltrasferase: Its role in pharmacogenomics and human disease (Review) por Sánchez Domínguez, Celia Nohemí, Gallardo Blanco, Hugo Leonid, Salinas Santander, Mauricio Andrés, Ortiz López, Rocío

“…In the last five years, the study of the genetic variants of the UGTs at a molecular level has become important due to its association with several diseases and the ability to predict adverse events due to drug metabolism. In the present review, the structure and the prominent genetic variants of the UGT1A subfamily and their metabolic and clinical implications are described.…”
Enlace del recurso

A multi-step multi-objective generation expansion planning model-A case study in Mexico por Palacios, Rodrigo, Valdés, Eduardo, Batres, Rafael

“…Multi-objective models allow the analysis of the inter-relationships and trade-off solutions to be obtained. This paper presents a mixed integer linear model for multi-step multi-objective generation expansion planning (MMGEP). …”
Enlace del recurso

The age of the corporate State versus the informational and cognitive public domain por Muela Meza, Zapopan Martín

“…This article analyses concepts of the bourgeois State, capitalist corporations and the democratic public domain. The main thesis presented is that today nation states have fused deeply with corporations; both orders have become transformed into one indivisible entity. …”
Enlace del recurso

Expression of the HPV18/E6 oncoprotein induces DNA damage por Cortés Gutiérrez, Elva Irene, García Vielma, Catalina, Aguilar Lemarroy, Adriana, Vallejo Ruíz, Veronica, Piña Sánchez, Patricia, Zapata Benavides, Pablo, Gosálvez, Jaime

“…The variable levels of DNA breaks present were measured quantitatively using image analysis after whole-genome DNA hybridization. …”
Enlace del recurso

Compact Narrow Linewidth Actively Q-Switched Er–Yb Double-Clad Fiber Laser por Posada Ramírez, Berenice, Durán Sánchez, Manuel, Alvarez Tamayo, Ricardo Iván, Alaniz Baylón, Jared, Salceda Delgado, Guillermo, Kuzin, Evgeny A., Ibarra Escamilla, Baldemar

“…Abstract: Actively Q-switched laser operation of a narrow linewidth compact fiber laser based on an Er–Yb double-clad fiber is presented. The laser linewidth as a function of the repetition rate and the Q-switched pulses characteristics for different pump powers are experimentally analyzed. …”
Enlace del recurso

Electrochemical Reactivation of AISI 409 Ferritic Stainless Steel Sheet Welded by Laser Process with application in aeronautical por C. Ramírez-López, M

“…After the electrochemical test, the microstructure was analyzed by scanning electron microscopy (SEM) and the presence of elements with dispersive energy of X-rays (EDS), with the X-ray diffraction (XRD) technique they were identified present phases in different welds. Microhardness profiles were employed to evaluate the mechanical properties. …”
Enlace del recurso

Desarrollo de un relevador de sobrecorriente con capacidades dinámicas de ajuste por Conde Enríquez, Arturo

“…Se presentan los resultados obtenidos, tanto de simulaciones digitales como en pruebas de laboratorio. This paper presents a new logic of operation for time overcurrent relays. …”
Enlace del recurso

Taxonomía y fitogeografía de la familia Fagaceae (Magnoliophyta: fagales) en Tamaulipas y Nuevo León, México por García Morales, Leccinum Jesús

“…Un análisis particular de conservación de los encinos presentes en los Sistemas de Áreas Protegidas de cada estado fue hecho para establecer el estado de conservación del género en el área de estudio…”
Enlace del recurso

Sensibilización a animales donméticos en estudiantes de veterinaria por Román Cañamar, David Eugenio

“…Las enfermedades alérgicas ocupacionales se caracterizan por presentar síntomas al existir sensibilización a alérgenos presentes en el ambiente de trabajo, Los profesionales en medicina veterinaria, quienes desde etapas iniciales del entrenamiento profesional tienen exposición constante a diferentes animales y a sus diversos alérgenos derivados de los mismos. …”
Enlace del recurso

Biodegradable nanoparticles loaded with tetrameric melittin: preparation and membrane disruption evaluation por González Horta, Azucena C., Matamoros Acosta, Arely, Chávez Montes, Abelardo, Castro Ríos, Rocío, Lara Arias, Jorge

“…However, the therapeutic application of melittin is limited due to its main side effect, hemolysis, which is especially pronounced following intravenous administration. In the present study, we formulated tetrameric melittin-carrying poly-D,L-lactic-co-glycolic acid nanoparticles (PLGANPs) and analyzed the lytic activity of this system on liposomes that resembles breast cancer cells. …”
Enlace del recurso

Modelación matemática de la adsorción de Cu (II) Y Pb (II) con residuos sólidos de café modificados químicamente. por Botello González, Jesús

“…Además, la cuantificación de iones intercambiables confirmó que el principal mecanismo de adsorción es el intercambio iónico de iones metálicos con los protones presentes en la superficie del adsorbente.…”
Enlace del recurso

Evaluación in vitro antimicrobiana y coagulante de los extractos etanólicos de Heterotheca inuloides, Mentha piperita y Amphyptergium adstringens como alternativa terapéutica en Od... por Rubio Garza, María Fernanda

“…Las plantas representan una alternativa terapéutica natural muy valiosa en medicina y odontología debido a la gran cantidad de compuestos químicos presentes, lo cual les otorga potencial para poder ser utilizados como agentes antimicrobianos, coagulantes, anticoagulantes, cicatrizantes, antiinflamatorios, etc., brindando una oportunidad de aplicar estas propiedades en el control de enfermedades bucodentales con un menor riesgo de efectos adversos y a un menor costo.…”
Enlace del recurso