Results 141 to 150 of about 88,644 (290)

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

Mecanismo de detección de gases dañinos usando hardware y software libres

open access: yesSerie Científica de la Universidad de las Ciencias Informáticas, 2019
Uno de los retos de las grandes industrias es el de preservar la integridad de sus trabajadores, sobre todo los que laboran de cara a los procesos más críticos y riesgosos, en los que eventos como un escape de gas tóxico, altas concentraciones de gases ...
Luis Manuel Vidal Piña   +1 more
doaj  

Un enfoque tolerante a interrupciones para la seguridad de la Internet de las cosas [PDF]

open access: yes, 2014
La Internet de las cosas (IoT, Internet of Things) es un paradigma emergente que pretende la interconexión de cualquier objeto susceptible de contar con una parte de electrónica, favorecido por la miniaturización de los componentes.
Borrell, Joan   +3 more
core  

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Vitaljacket : actigrafia e localização [PDF]

open access: yes, 2009
Mestrado em Engenharia Electrónica e TelecomunicaçõesAs novas tecnologias estão cada vez mais inseridas na vida quotidiana do Homem. Actualmente é possível “vesti-las” como que de uma peça de roupa se tratasse justificando a denominação de tecnologias ...
Saraiva, Paulo Tiago dos Santos
core  

Rational Fine‐Tuning of MOF Pore Metrics: Enhanced SO2 Capture and Sensing with Optimal Multi‐Site Interactions

open access: yesAdvanced Functional Materials, EarlyView.
A pore tuning strategy to amplify the multi‐site MOF‐SO2 interactions is proposed to achieve an enhanced trace SO2 capture and chemiresistive sensing in highly stable isostructural DMOFs by annelating benzene rings. This work provides a facile strategy to achieve tailor‐made stable MOF materials for specific multifunctional applications.
Shanghua Xing   +9 more
wiley   +1 more source

ANÁLISE DE DESEMPENHO EM REDES DE SENSORES SEM FIO A PARTIR DE UM MEDIDOR DE RSSI

open access: yesColloquium Exactarum, 2016
Este artigo apresenta a análise de desempenho de um Indicador de Intensidade de Sinal Recebido (RSSI) para Redes de Sensores Sem Fio ZigBee, com a finalidade de investigar o comportamento dos dispositivos ZigBee operando em ambientes reais.
Teles de Sales Bezerra   +3 more
doaj   +2 more sources

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

open access: yesAdvanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco   +8 more
wiley   +1 more source

Implementación y análisis de mecanismos de transmisión cooperativa en sistemas de comunicaciones inalámbricos [PDF]

open access: yes, 2009
Los sistemas de comunicaciones inalámbricos disponen de alcance máximo o rango de cobertura. Alrededor de la zona límite los paquetes pueden llegar al destino con una alta probabilidad de error. La utilización de técnicas de transmisiones cooperativas en
Pardo Mas, Sonia, Pérez Rueda, Jordi
core  

Implementación de redes de sensores mediante LabVIEW

open access: yes, 2009
Las redes de sensores inalámbricas (WSN) son un concepto relativamente nuevo. Consisten en un conjunto de pequeños nodos autónomos de escasos recursos interconectados entre sí a través de una red y, a su vez, conectados a un sistema central encargado de recopilar la información recogida por cada uno de los sensores. El ámbito de aplicación de este tipo
openaire   +2 more sources

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