Resultados de búsqueda - (( levey OR levy ) OR ( leves OR level ))*

Low concentration fe-doped alumina catalysts using sol-gel and impregnation methods: the synthesis, characterization and catalytic performance during the combustion of trichloroeth... por Solís Maldonado, Carolina, Rivera de la Rosa, Javier, Lucio Ortiz, Carlos J., Hernández Ramírez, Aracely, Castillón Barraza, Felipe F., Valente, Jaime S.

“…Several characterization techniques were used to study the level of Fe modification in the γ-Al2O3 phase formed and to correlate the catalytic properties during trichloroethylene (TCE) combustion. …”
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Quantification of nitric oxide by high‑performance liquid chromatography‑fluorometric method in subgenomic hepatitis C virus‑replicon expressing Huh7 cells upon treatment with acet... por Ríos Ibarra, Clara Patricia, Torres de la Cruz, Víctor Manuel, Ochoa Ruiz, Andrea Gabriela, Rivas Estilla, Ana María

“…As nitric oxide (NO) expression levels are lower in hepatocytes compared with other cell types, it is difficult to quantify this compound via Griess assay. …”
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Schizophyllum commune : An unexploited source for lignocellulose degrading enzymes por Tovar Herrera, Omar Eduardo, Martha Paz, Adriana Mayrel, Pérez LLano, Yordanis, Aranda, Elisabet, Tacoronte Morales, Juan Enrique, Pedroso Cabrera, María Teresa, Arévalo Niño, Katiushka, Folch Mallol, Jorge Luis, Batista García, Ramón Alberto

“…In this review, we focus on the enzymatic toolbox of S. commune at the genetic, transcriptomic, and proteomic level, as well as the requirements to be employed for fermentable sugars production in biorefineries. …”
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Estudio del comportamiento de materiales cerámicos expuestos a un campo de microondas por Gómez de la Fuente, María Idalia del Consuelo, Aguilar, Juan

“…The samples were obtained by mixing CaO and ZrO2 powders in the molar ratio 1:1 and varying the pressing pressure, power level, and mass parameters. The samples obtained were analyzed by means of X-ray diffraction, and observed by optical and scanning electron microscopy. …”
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La preparación académica profesional como mecanismo de eficiencia y eficacia en el desempeño laboral por Torres González, Ilsa Elia

“…The statement above is applicable in varying degrees at any level of government and interchangeably in institutions whose orientation is governance. …”
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Superovulation and embryo quality with porcine follicle stimulation hormone (pFSH) in Katahdin hair sheep during breeding season por Sánchez Dávila, Fernando, Bernal Barragán, Hugo, Del Bosque González, Alejandro S., González Gómez, Adán, Olivares Sáenz, Emilio, Padilla Rivas, Gerardo Raymundo, Ledezma Torres, Rogelio Alejandro

“…At the beginning of superovulation treatment, each ewe received 5 mg of dinoprost tromethamine (1 ml of Lutalyse® Pfizer, Mexico). An effect of pFSH level was observed on the interval from sponge removal and the onset of estrus (REI) (P < 0.01), with a difference of 13.5 h between ewes from treatment 2 and 3. …”
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Resultados psicológicos del entrenamiento físico durante el embarazo. revisión de literatura por Enríquez Reyna, María Cristina, Gallardo Tovar, Olga Liliana, Hernández Cortés, Perla Lizeth, Lagunes Carrasco, José Omar, Carranza García, Luis Enrique

“…The quality of the analyzed evidence varies between level II and III of the classification of the National Health and Medical Research Council (1999). …”
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Characterization of Trehalose-6-phosphate Synthase and Trehalose-6-phosphate Phosphatase Genes and Analysis of its Differential Expression in Maize (Zea mays) Seedlings under Droug... por Acosta Pérez, Phamela, Camacho Zamora, Bianka Dianey, Espinoza Sánchez, Edward Alexander, Gutiérrez Soto, Juanita Guadalupe, Zavala García, Francisco, Abraham Juárez, María Jazmín, Sinagawa García, Sugey Ramona

“…Thus, the aim of this work was to clone and characterize at molecular level the trehalose-6-phosphate synthase (TPS) and trehalose-6-phosphate phosphatase (TPP) genes from maize and to evaluate its differential expression in maize seedlings under drought stress. …”
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Tailoring the microstructure and tribological properties in commercially pure aluminium processed by High Pressure Torsion Extrusion por Sergejev, F., Omranpour, B., Kommel, L., Ivanisenko, J., Hernández Rodríguez, Marco Antonio Loudovic, García Sánchez, Edgar, Antonov, M.

“…The grain refinement obtained by this technique was outstanding since the initial grain size of 120 μm in annealed conditions was reduced to the final grain size of 0.7 μm in v1w3 in merely one pass of extrusion; however, each regime showed a different level of grain refinement depending on the imposed strain. …”
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Effects of the fe/Mn Weight ratio and cooling rate on the area fractions of α-AlFeSi AND β-AlFeSi Phases in Al-7.5Si-3.75Cu-0.5Mg-0.55Fe-xMn Aluminum alloy por Hernández Rodríguez, Alejandra Nohemí, Castro Román, M. de J., Herrera Trejo, M., Belmares Perales, S., Orozco González, Pilar

“…The amount, size and shape of these iron compounds depend largely on the cooling conditions and on the chemical composition, especially the level of iron in the melt [5]. β-Al5FeSi-needles iron compounds have usually been considered most detrimental to the mechanical properties of Al-Si alloys because of the brittle features and stress concentration caused by the needle-like morphology. …”
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Mg-Ca0.3 Electrochemical Activity Exposed to Hank’s Physiological Solution and Properties of Ag-Nano-Particles Deposits por González Murguía, José Luis, Veleva, Lucien, Rodríguez Gattorno, Geonel, Figueroa Torres, Mayra Zyzlila, Feliu, Sebastián

“…The pH change over time, the lower mass loss (≈20%), and the lower concentration of the released Mg2+ ions (≈3.6 times), as well as the lower level of the surface degradation, allowed to consider the positive effect of Ca, presenting Mg-Ca0.3 alloy with lower electrochemical activity than that of Mg. …”
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Mean platelet volume is decreased in adults with active lupus disease por Delgado García, Guillermo Rubén, Galarza Delgado, Dionicio Ángel, Colunga Pedraza, Iris Jazmín, Borjas Almaguer, Omar David, Mandujano Cruz, Ilse, Benavides Salgado, Daniel Eduardo, Martínez Granados, Rolando Jacob, Atilano Díaz, Alexandro

“…Results: MPV was significantly decreased with respect to those of inactive patients (7.16 ± 1.39 vs. 8.16 ± 1.50, p = 0.005). At a cutoff level of 8.32 fL, MPV has a sensitivity of 86% and a specificity of 41% for the detection of disease activity. …”
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Instructional strategies to improve the academic writing performance of undergraduate EFL learners from a public university in Northeastern Mexico por López Martínez, Andrea

“…This study aims to identify the most common types of mistakes that fifth-semester undergraduate B2 level EFL learners show in their academic writing performance and the influence of intrinsic and extrinsic factors. …”
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Atención prenatal en adolescentes embarazadas por Barbosa Martínez, Rosalva del Carmen, Benavides Torres, Raquel Alicia, Ramírez Aranda, José Manuel

“…The mean age of first sexual encounter was 15 (12 -17) years and 61.7% mentioned having one sexual partner; 56.7% said this was an unplanned pregnancy. The predominant level of education was completed secondary school (40%); 50% had a common law relationship, 85% said they were housewives, and 41.7% had complications during their pregnancy. …”
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Incorporation of dietary nitrogen from fish meal and pea meal (Pisum sativum) in muscle tissue of Pacific white shrimp (Litopenaeus vannamei) fed low protein compound diets por Martínez Rocha, Luis, Gamboa Delgado, Julián, Nieto López, Martha Guadalupe, Ricque Marie, Denis, Cruz Suárez, Lucía Elizabeth

“…A negative control diet was formulated to contain 100% pea meal and six more isoproteic diets to have decreasing levels of pea meal-derived nitrogen: 95, 85, 70, 55, 40 and 0 % of the initial level. …”
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Trimetallic nanostructures: the case of AgPd–Pt multiply twinned nanoparticles por Khanal, Subarna, Bhattarai, Nabraj, Velázquez Salazar, J. Jesús, Bahena, Daniel, Soldano, German, Ponce, Arturo, Mariscal, Marcelo M., Mejía Rosales, Sergio, Yacamán, Miguel José

“…The nanoparticles were small in size, with an average diameter of 11 nm and a narrow distribution, and their characterization by aberration corrected scanning transmission electron microscopy allowed us to probe the structure of the particles at an atomistic level. In some nanoparticles, the formation of a hollow structure was also observed, that facilitates the alloying of Ag and Pt in the shell region and the segregation of Ag atoms on the surface, affecting the catalytic activity and stability. …”
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El diálogo político juvenil. Cómo los medios y la sofisticación influyen en la conversación política. Youth Political Dialogue: How the Media and the Sophistication Influence th... por Muñiz, Carlos

“…Besides, the effect of political sophistication maintained by participants into the level of political discussion was evaluated. A positive impact of studied variables was observed, increasing the conversation between the more sophisticated students and those who use media in order to get political information.…”
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Tecnologías y brecha de género: integrando las tecnologíasde información al desarrollo económico y social de las mujeres por Burkle, Martha

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El encuadre como factor de eficacia persuasiva en los mensajes publicitarios de las ONG destinados a recaudar dinero por Sabre, María Elisa

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El diagnóstico de "la" cultura organizacional o las culturas de la cultura por Edwards, Andrea Aguilar

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