Results 71 to 80 of about 7,544 (146)

Sistema administrativo de apoyo de la enseñanza-aprendizaje: e-Aula

Programación Matemática y Software, 2014
La educación digital representa un cambio de paradigmas: de la era industrial a la era del conocimiento; de la inflexibilidad al hipertexto, y de la transmisión de información al objetivo último de aprender a aprender.
Jorge Elías Marrufo-Muñoz, Yeni Morales-Carbajal, Mario José Martín Ruiz   +2 more
doaj  

Clinical and sociodemographic features and quality of life in patients with atopic dermatitis who attended dermatology teaching clinics in Medellín, Antioquia and its metropolitan area [PDF]

Biomedica, 2021
Cuervo MM, Sanclemente G, Barrera LM.
europepmc   +1 more source

Efecto de la temperatura de calcinación sobre la concentración de grupos silanoles en superficies de SiO2 (SBA–15)

Avances en Química, 2014
The preparation of SBA-15 materials involves both, calcination and activation processes. The effects of the temperatures of these stages on the silanol superficial concentration are studied experimentally.
Reyna Ojeda-López, Isaac J. Pérez-Hermosillo, J. Marcos Esparza-Schulz, Armando Domínguez-Ortiz   +3 more
doaj  

Patrones de crecimiento durante los primeros dos años de vida en niños con antecedentes de asfixia perinatal tratados con hipotermia terapéutica: estudio retrospectivo longitudinal

Revista Española de Nutrición Humana y Dietética
Introducción: La asfixia perinatal (AP) es una complicación obstétrica de alto riesgo para el desarrollo de alteraciones orgánicas y funcionales que pueden conllevar a estados de malnutrición infantil, con todos los efectos adversos que estos suponen ...
Miguel Angel Hernández Real, María Magdalena Sánchez Jesús , Patricia Muñoz-Ledo Rábago , Mario António Mandujano Valdés , María Rodríguez Flores   +4 more
doaj   +1 more source

Influence of boro-nitriding time on the formation of Fe–B–N multiphase layers and their effect on mechanical properties

Materials Research Express
The boro-nitriding thermomechanical treatment has established itself as a promising alternative to improve the surface properties of steels; however, the simultaneous optimization of hardness and overall mechanical behavior continues to be a challenge ...
E E Sánchez-López, V J Cortes-Suárez, J Reyes-Miranda, A Garrido-Hernández, D Flores-Sánchez, M Landa-Castro   +5 more
doaj   +1 more source

[Influence of meteorological factors and air pollutants on severe bronchiolitis cases in the metropolitan area of Barcelona: A pilot study]. [PDF]

An Pediatr (Engl Ed), 2020
Esteban ME, Bote-González M, Alejandre C, Balaguer M, Jordan I.   +4 more
europepmc   +1 more source

NUCLEAR MAGNETIC RESONANCE THE GELLED PRODUCT OF CANNIZZARO REACTION

Avances en Ciencias e Ingeniería, 2015
The paper presents the nuclear magnetic resonance (NMR) of proton 1H, carbon 13C and two dimensional spectrums, product of a green organic synthesis of redox on the Cannizzaro reaction.
Lilia Fernández-Sánchez, Mirella Gutiérrez-Arzaluz, María de la Luz Soto-Téllez, Leonardo Hernández-Martínez, Elpidio Corral-López   +4 more
doaj  

Effect of heat treatment over the mechanical properties and the resistance to corrosion of the ternary Cu-Al-Ag alloy

Materials Research Express
In the present work, the manufacture of a Cu-9Al-3Ag alloy was carried out easily through a green molding process. After dimensioning and slitting, the alloy samples were subjected to quenching, normalizing, and annealing heat treatments, to exert phase ...
Daniel Flores-Sanchez, Miguel Ángel Suárez-Rosales, Mirella Gutiérrez-Arzaluz, Manuel Palomar-Pardavé, Mario Romero-Romo, Midori Landa-Castro   +5 more
doaj   +1 more source

AN APPLICATION OF THE LOGISTIC REGRESSION MODEL IN THE EXPERIMENTAL PHYSICAL CHEMISTRY

Avances en Ciencias e Ingeniería, 2015
The calculation of intensive properties molar volumes of ethanol-water mixtures by experimental densities and tangent method in the Physical Chemistry Laboratory presents the problem of making manually the molar volume curve versus mole fraction and the ...
Elpidio Corral-López, Daniel Estrada-Guerrero, Edgar González-Martínez, Leonardo Hernández-Martínez, María de la Luz Soto-Téllez   +4 more
doaj  

Aflatoxin M1 Levels in Commercial Cows’ Milk in Mexico: Contamination and Carcinogenic Risk Assessment

Applied Sciences
Aflatoxin M1 (AFM1), a toxic metabolite of aflatoxin B1 (AFB1), is commonly found in cow’s milk (CM) when dairy cattle consume contaminated feed. Chronic exposure to AFM1 poses serious health risks, particularly for children. This study aimed to quantify
Araceli Monter-Arciniega, Nelly del Socorro Cruz-Cansino, Araceli Castañeda-Ovando, Angélica Saraí Jiménez-Osorio, Salvador Ramón Tello-Solís, Carlos Jiménez-Pérez, Gabriela Mariana Rodríguez-Serrano   +6 more
doaj   +1 more source