Results 71 to 80 of about 6,102,702 (302)

ComPassos com histórias : narrativas digitais de caminha [PDF]

open access: yes, 2015
ComPassos com histórias explora o contributo da média-arte locativa para o registo da identidade e das vivências de uma comunidade através da exploração do espaço urbano da Vila de Caminha, geolocalizando narrativas digitais de memórias urbanas e ...
Bidarra, José   +2 more
core   +1 more source

Negative refraction and plano-concave lens focusing in one-dimensional photonic crystals

open access: yes, 2006
Negative refraction is demonstrated in one-dimensional (1D) dielectric photonic crystals (PCs) at microwave frequencies. Focusing by plano-concave lens made of 1D PC due to negative refraction is also demonstrated.
Huang, Y.   +3 more
core   +1 more source

Recent Advances on Thermochromic Inks for Security Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Thermochromic security inks have garnered interest in recent years as security elements for authentication, information encryption, and anti‐counterfeiting. This review outlines different types of thermochromic materials, how they have been developed as functional inks, and how advancements in property enhancement, sustainability, and printing ...
Duarte B. Oliveira   +5 more
wiley   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

open access: yesAdvanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane   +4 more
wiley   +1 more source

Visualizando conjuntos en la recta real y el plano [PDF]

open access: yes, 2013
En esta investigación se reportan resultados relacionados con los errores comunes respecto al tema de conjuntos en la recta real y en el plano que presentan los alumnos que han concluido el bachillerato y que iniciaron una carrera de licenciatura en ...
Borjón, Elvira   +3 more
core  

Focusing by Plano-Concave lens using Negative Refraction

open access: yes, 2005
We demonstrate focusing of a plane microwave by a plano-concave lens fabricated from a photonic crystal (PhC) having negative refractive index and left-handed electromagnetic properties.
Lu, W. T.   +3 more
core   +1 more source

A millimeter-wave antireflection coating for cryogenic silicon lenses [PDF]

open access: yes, 2007
We have developed and tested an antireflection (AR) coating method for silicon lenses at cryogenic temperatures and millimeter wavelengths. Our particular application is a measurement of the cosmic microwave background.
Fowler, J. W.   +10 more
core   +2 more sources

Tariffs and the Plano Real In Brazil [PDF]

open access: yesCEPAL Review, 1998
This article analyses the economic rationale of Brazil's tariff policy during the first two years of the Plano Real. To this end, a study is made of the changes made in import duties for all the products traded. The tariff reform process in Brazil was begun in 1988, after the old Tariff Act had been in effect for thirty years, and represented a marked ...
openaire   +1 more source

Tomás soler y Ferrer, arquitecto de la Bailía General del Real Patrimonio de Cataluña [PDF]

open access: yes, 2014
Tomàs Soler i Ferrer és conegut, sobretot, com a autor del plànol del Rec Comtal (1836), previ a la urbanització del pla de Barcelona. Aquest plànol culmina una carrera al servei de la Batllia General del Reial Patrimoni, on ja havia treballat el seu ...
Rodríguez Olivares, Mª Luz
core  

Dual‐Functional Ingestible Passive Capsules for High‐Throughput Intestinal Sampling with Sealed Containment and Targeted Drug Delivery

open access: yesAdvanced Robotics Research, EarlyView.
To address challenges in high‐throughput intestinal sampling with sealed containment and target drug delivery, we developed a dual‐functional ingestible passive capsule with a dual‐triggered control system based on pH‐response and mechanical actuation.
Libing Huang   +9 more
wiley   +1 more source

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