Results 41 to 50 of about 7,754 (119)

Hemoglobin values for pregnant women residing at middle altitude

Salud Pública de México, 2013
Objective. To determine maternal hemoglobin behavior during pregnancy for middle altitude residents and to compare it with that reported in other populations with or without iron supplementation. Materials and methods.
Mercedes Jatziri Gaitán-González, Juan Carlos Echeverría-Arjonilla, Carlos Vargas-García, Sergio Camal-Ugarte, Ramón González-Camarena   +4 more
doaj   +1 more source

VALIDACIÓN DE UN INSTRUMENTO PARA MEDIR LA PERCEPCIÓN DE PROFESORES-INVESTIGADORES EN EL USO DE LA TECNOLOGÍA DIGITAL

Avances en Ciencias e Ingeniería, 2020
The aim of this work was to validate the questionnaire-survey USOHTD applied in the Universidad Autónoma Metropolitana Unidad Azcapotzalco in the areas of chemistry to know the perception of 30 professor-researchers in the use of Digital Technology in ...
Lilia Fernández-Sánchez, Carmen E. Loreto-Gómez   +1 more
doaj  

Overpotential Nucleation and Growth of Copper onto Polycrystalline and Single Crystal Gold Electrodes

International Journal of Electrochemical Science, 2012
The copper electrodeposition process was studied using cyclic voltammetry and through application of potential pulses within the so called OPD zone (E < Eeq), initiating the pulse with a jump to an anodic rest potential (Ear) more positive than the ...
Elizabeth Garfias-Garcia, Mario Romero-Romo, Maria Teresa Ramírez-Silva, Manuel Palomar-Pardavé   +3 more
doaj   +1 more source

Spatial Organization of Five-Fold Morphology as a Source of Geometrical Constraint in Biology

Entropy, 2018
A basic pattern in the body plan architecture of many animals, plants and some molecular and cellular systems is five-part units. This pattern has been understood as a result of genetic blueprints in development and as a widely conserved evolutionary ...
Juan López-Sauceda, Jorge López-Ortega, Gerardo Abel Laguna Sánchez, Jacobo Sandoval Gutiérrez, Ana Paola Rojas Meza, José Luis Aragón   +5 more
doaj   +1 more source

Espacios verdes ¿para qué y para quiénes? Territorialidades en disputa en el Área Metropolitana de Buenos Aires (1944-2016) [PDF]

Estudios Socioterritoriales: Revista de Geografía, 2019
En este artículo nos proponemos identificar y caracterizar las territorialidades que diferentes actores han buscado imponer en el Área Metropolitana de Buenos Aires con respecto a los espacios verdes.
Francisco Fernández Romero
doaj  

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  

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  

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

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