Results 51 to 60 of about 6,304,004 (379)

Estudios seroepidemiológicos

open access: yesRevista Española de Salud Pública, 2009
Los estudios seroepidemiológicos permiten estudiar la distribución de las enfermedades de manera indirecta, mediante la detección sérica de marcadores de infección y de inmunidad. Estos estudios son aplicables en investigaciones en salud pública, investigaciones destinadas a determinar la prevalencia o incidencia de ciertas infecciones en particular ...
openaire   +4 more sources

Estudio comparado [PDF]

open access: yes, 2014
El presente capítulo describe las vinculaciones entre la investigación científica para el estudio de la administración pública y el método comparativo. Se parte de la premisa de que cualquier disciplina científica requiere de un objeto de estudio único y
Gómez Díaz de León, Carlos
core  

El protocolo de investigación III: la población de estudio

open access: yes, 2016
The study population is defined as a set of cases, determined, limited, and accessible, that will constitute the subjects for the selection of the sample, and must fulfill several characteristics and distinct criteria.
Jesús Arias-Gómez   +2 more
semanticscholar   +1 more source

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

open access: yesAdvanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán   +11 more
wiley   +1 more source

Linguistic Studies in the Education Spanish-Literature career from a professional perspective

open access: yesRevista MENDIVE, 2022
The study of the language is the focus of the Linguistic Studies discipline and is a necessity in the Degree in Spanish-Literature Education. The objective of this article is to propose a didactic strategy that bases the Teaching-Learning Process of the ...
Yelena Abreu Alvarado   +2 more
doaj  

Leer, un rapto del alma

open access: yesMárgenes, 2021
Leer es la posibilidad de caer en la cuenta, un rapto del alma. En lo leído nos proyectamos y, a menudo, recreamos en nosotros lo que los héroes o heroínas de las novelas que más amamos viven o padecen.
Fernando Bárcena
doaj   +1 more source

El valor económico y social de los servicios de información: bibliotecas. Informe de resultados [PDF]

open access: yes, 2014
FESABI
Consejo de Cooperación Bibliotecaria   +2 more
core  

Wind profile prediction using linear Markov chains: A linear algebra approach [PDF]

open access: yes, 2018
To predict the future wind speed and wind direction is of relevance to the wind industry to maximize the power generation. In this regards, this article describes a methodology for the construction of predictive models based on linear Markov chains under
García Planas, María Isabel   +1 more
core   +2 more sources

Intención emprendedora en estudiantes universitarios: Un estudio bibliométrico

open access: yesIntangible Capital, 2016
Purpose: The aim of the article is to present the results of the bibliometric study in the field of entrepreneurial intention of undergraduate students, allowing a diagnosis of the state of art of this topicDesign/methodology/approach: The applied ...
Luis Alejandro Arias Barragan   +2 more
semanticscholar   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

open access: yesAdvanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano   +18 more
wiley   +1 more source

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