Results 161 to 170 of about 116,651 (290)

Photo‐Switching Thermal and Lithium‐Ion Conductivity in Azobenzene Polymers

Advanced Functional Materials, EarlyView.
Light‐responsive azobenzene polymers control thermal and ionic transport simultaneously through structural transitions. UV illumination disrupts π–π stacking, converting crystalline trans states to amorphous cis configurations. Thermal conductivity drops from 0.45 to 0.15 W·m−1·K−1 while Li+ diffusivity increases 100 fold. This dual transport switching
Jaeuk Sung, Jungwoo Shin, Qiujie Zhao, Minjee Kang, Christopher Evans, Cecilia Leal, Paul V. Braun, David G. Cahill   +7 more
wiley   +1 more source

Efectos de la contaminación atmosférica sobre la salud: una introducción

Revista Española de Salud Pública, 1999
En los últimos años ha habido un gran avance en el conocimiento y comprensión de los efectos de la contaminación atmosférica. En este trabajo se establecen sus conceptos fundamentales y se revisan las diferentes aproximaciones metodológicas posibles ...
Ballester Díez Ferran, Tenías José María, Pérez-Hoyos Santiago   +2 more
doaj  

Bases de datos para series temporales: estudio

, 2023
En este Trabajo de Fin de Grado se desarrolla un estudio teórico sobre las series temporales, los tipos que hay y componentes, así como en las bases de datos orientadas a series temporales, presentando una revisión de los sistemas de bases de datos disponibles, viendo qué características tienen, y posteriormente profundizar en los casos de InfluxDB y ...
openaire   +1 more source

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

Advanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee, Osman Gul, Yeongjae Kwon, Jaeseok Jeong, Seokjoo Cho, Jihyeon Ahn, Jehee Yu, Cheolmin Kim, Donho Lee, Hyeonseok Han, Byeongju Lee, Jungrak Choi, Ji‐Hwan Ha, Yongrok Jeong, Kyungnam Kang, Ali Javey, Junseong Ahn, Inkyu Park   +17 more
wiley   +1 more source

Orofacial clefts in newborns in Brazil: a time series study, 2010-2021. [PDF]

Epidemiol Serv Saude
Vieira KM, Menezes VC, Cardoso-Dos-Santos AC, Franco ALMM, Carvalho FM, Faccini LS, Iser BPM.   +6 more
europepmc   +1 more source

From Waste to Value: Conversion of Calcium Sulfate to Vaterite via Carbon Capture and Storage

Advanced Functional Materials, EarlyView.
This study introduces a new concept for carbon management that relies on the carbonation of industrial gypsum waste and yields phase‐pure vaterite at ambient conditions without any additives. The obtained vaterite is further shown to be a reactive material that develops compressive strength in aqueous suspensions like conventional cements.
Carlos Pimentel, German Montes‐Hernández, Pablo Almarza‐Cifuentes, Matthias Kellermeier, Alexander E.S. Van Driessche   +4 more
wiley   +1 more source

Reports of violence against transvestites and transsexuals: a time series study, Brazil, 2015-2022. [PDF]

Epidemiol Serv Saude
Rios EB, Costa ST, Ribeiro MDA, Maia LC, Costa SM.   +4 more
europepmc   +1 more source

Solar Heating Enhanced Selective Recovery of Metal Ions Through Flowing Electrodes Enabled by Hybrid Carbon Nanostructures

Advanced Functional Materials, EarlyView.
A new electrochemical system based on a microporous hybrid of carbon nanoplatelets and nanotubes to selectively capture Ni2+ from wastewater is constructed. The system temperature rises rapidly when irradiated with sunlight, which enhances the Ni2+ removal rate by 250% and the selectivity by 53%, and the energy consumption is also reduced by 51 ...
Ziquan Wang, Jiaqi Chen, Qiuru Lin, Mingxing Liang, Bo Yang, Yantao Chen, Minjun Kim, Yusuke Yamauchi, Stephen J. Eichhorn, Zhiqun Lin, Magdalena Titirici, Libo Deng   +11 more
wiley   +1 more source

Trend in neonatal mortality and preventable neonatal deaths: a time series analysis, Bahia, 2010-2020. [PDF]

Epidemiol Serv Saude
Nery DP, Andrade ACS, Rocha DS, Barbosa MCR, Gomes RDS, Bezerra VM.   +5 more
europepmc   +1 more source

Predicción de series temporales con redes neuronales

, 2021
Hay una gran cantidad de reportes en la literatura en los que se realizan experimentos sobre distintos conjuntos de datos verificando la performance de las redes neuronales para tareas predictivas. Los estudios coinciden en que los resultados son muy prometedores pero las conclusiones obtenidas al comparar este tipo de métodos con los estadísticos son ...
openaire   +1 more source