Results 71 to 80 of about 698,449 (200)

Los avisos clasificados en la prensa de la ciudad de Bogotá: Continuidades y rupturas de la Colonia a la república [PDF]

open access: yes, 2016
Este artículo pretende como meta examinar las características y alcances de los avisos clasificados publicados en la prensa de la ciudad de Bogotá entre 1801 y 1825 a través de un análisis comparativo entre el Correo Curioso de Santafé de Bogotá y la ...
Pita Pico, Roger
core  

Microscale application of column theory for high resolution force and displacement sensing

open access: yes, 2004
We present the design, fabrication and experimental validation of a novel device that exploits the amplification of displacement and attenuation of structural stiffness in the post-buckling deformation of slender columns to obtain pico-Newton force and ...
A. V. Desai   +3 more
core   +1 more source

Revolutionizing sensing technologies: A comprehensive review of flexible acceleration sensors

open access: yesFlexMat
Flexible sensing technologies are pivotal for achieving multidimensional spatial freedom in sensing capabilities. Within this domain, flexible acceleration sensors stand out as innovative devices capable of accurately monitoring acceleration signals ...
Bozhi Wu   +5 more
doaj   +1 more source

Electrically driven cation exchange for in situ fabrication of individual nanostructures

open access: yesNature Communications, 2017
Cation exchange, traditionally driven by ion solvation or thermal activation, is a robust approach for preparing heterogeneous nanostructures but lacks selectivity for preparation of individual nanocrystals.
Qiubo Zhang   +12 more
doaj   +1 more source

e-News v1.0

open access: yesRevista Iberoamericana de Tecnología en Educación y Educación en Tecnología, 2015
Una de las actividades que identifica a la sociedad actual radica en estar permanentemente conectados a Internet, tarea que se efectúa especialmente a través de los dispositivos móviles de última generación.
José Luis Filippi   +3 more
doaj  

Peoples without religion: the fallacy of Valladolid controversy [PDF]

open access: yes, 2016
De la multicitada controversia de Valladolid sobre la humanidad de los indios sabemos realmente muy poco debido a la falta de fuentes y documentos. Sin embargo, se ha convertido con el paso del tiempo en un referente historiográfico fundamental para ...
Montañez Pico, Daniel
core  

Prevalence of secondary arterial hypertension in patients with acute renal failure in a secondary-level pediatric hospital in Northwestern Mexico

open access: yesBoletín Médico del Hospital Infantil de México
Background: The worldwide prevalence of arterial hypertension in pediatric patients is 3.5%, and it has repercussions at renal, cardiovascular, neurological, and lifestyle levels.
Humberto Peña-Guevara   +2 more
doaj   +1 more source

New or interesting records of bryophytes from the Azores [PDF]

open access: yes, 2005
Lepidozia stuhlmannii, L. pearsonii, Atrichum tenellum, Bryum lanatum, Campylopus subulatus, Ceratodon stenocarpus, Polytrichum commune var. humile and Thuidium delicatulum are reported as new to the Azores.
Frahm, Jan-Peter
core  

Size-Effect-Based Dimension Compensations in Wet Etching for Micromachined Quartz Crystal Microstructures

open access: yesMicromachines
Microfabrication technology with quartz crystals is gaining importance as the miniaturization of quartz MEMS devices is essential to ensure the development of portable and wearable electronics.
Yide Dong   +6 more
doaj   +1 more source

Estrategia de Medición, Evaluación y Mejora Continua de Calidad

open access: yesTecnología y Ciencia, 2019
La medición permite obtener datos al cuantificar atributos de un ente usando métricas. Para obtener información de estos datos la evaluación interpreta las medidas obtenidas usando indicadores.
Belén Rivera, Pablo Becker, Luis Olsina
doaj  

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