Results 51 to 60 of about 434,571 (333)

3D Multicellular Scaffold Based Model for Advancing Bone Disorder Research

open access: yesAdvanced Functional Materials, EarlyView.
A scalable 3D multicellular in vitro bone model engineered by integrating osteoblasts, osteoclasts, and endothelial cells on biodegradable scaffolds. The system recapitulates key features of human bone remodeling and disease pathology. As a proof of concept, the model mimics osteogenesis imperfecta, demonstrating its potential as a physiologically ...
Gali Guterman‐Ram   +5 more
wiley   +1 more source

CRIBs (Climate Relevant Innovation-system Builders): a powerful new focus for international climate technology policy [PDF]

open access: yes, 2014
This briefing suggests some key ways in which the UNFCCC architecture could be extended in order to strengthen National Systems of Innovation (NISs) to achieve more transformative rates of climate technology transfer and development via the creation of ...
Byrne, Robert, Ockwell, David
core  

The Dynamics of Interfacial Trap States in High‐Detectivity Near‐Infrared Photomultiplication Organic Photodetectors

open access: yesAdvanced Functional Materials, EarlyView.
Photomultiplication organic photodetectors (PM OPDs) are an attractive strategy for health‐monitoring. Here, PM‐OPDs are reported with a specific detectivity of 5.7 × 1012 Jones and external quantum efficiency values of 3500% under −10 V. The dynamics of carrier trapping in these devices are elucidated through trap selective spectroscopical techniques.
Marie Houot   +9 more
wiley   +1 more source

Center of gravity estimation using a reaction board instrumented with fiber Bragg gratings

open access: yesPhotonic Sensors, 2018
The purpose of the present work is to construct a reaction board based on fiber Bragg gratings (FBGs) that could be used for estimation of the 2D coordinates of the projection of center of gravity (CG) of an object.
Rui Oliveira   +3 more
doaj   +1 more source

Characterisation of ionospheric TEC variations over the equatorial and polar regions during solar cycle 24 [PDF]

open access: yes, 2018
The TEC variations in the equatorial and polar region are known to be high compared to the mid latitude region. Investigation on ionospheric TEC at individual regions has been carried out by many studies but the investigation between these regions ...
Mohd Hamzah, Siti Zainab
core  

High‐Yield Synthesis of Fe‐NC Electrocatalysts Using Mg2+ Templating and Schiff‐Base Porous Organic Polymers

open access: yesAdvanced Functional Materials, EarlyView.
Fe─NC porous oxygen reduction electrocatalysts are prepared employing a 2,4,6‐Triaminopyrimidine‐based porous organic polymer, a Mg2+ Lewis acid, and a low‐temperature cation exchange protocol. Using the polymer precursor achieves high pyrolysis yields and results in atomically dispersed FeNx sites. The resulting catalysts feature hierarchical porosity
Eliot Petitdemange   +11 more
wiley   +1 more source

Development and Evaluation of Near‐Real Time TEC and Ancillary Products for SANSA Space Weather

open access: yesSpace Weather, 2022
In this paper, the second version of SANSA's Total Electron Content (TEC) maps is presented with its associated methodology and assumptions. The method is based on Ma and Maruyama (2003, https://doi.org/10.5194/angeo-21-2083-2003) determination of ...
Tshimangadzo M. Matamba   +1 more
doaj   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Trap‐Modified Inverted Organic Photodetectors via Layer‐by‐Layer Processing with Poly(N‐vinylcarbazole) Additives

open access: yesAdvanced Functional Materials, EarlyView.
Trap state engineering in inverted organic photodetectors (OPDs) is achieved via combined layer‐by‐layer (LbL) processing and poly(N‐vinylcarbazole) (PVK) incorporation. LbL reduces the trap density while PVK additives gradually shift trap states from shallow band‐edge to deep mid‐gap levels, tailoring the energy distribution.
Jingwei Yi   +10 more
wiley   +1 more source

La transición metalúrgica: metales y objetos entre los indígenas coloniales

open access: yesRevista Colombiana de Antropología, 2015
La metalurgia prehispánica de Suramérica es conocida gracias a la investigación arqueoló - gica y la existencia de colecciones de museo. No sucede lo mismo con la metalurgia colo - nial, pese a que representa la transición entre la tecnología aborigen
Roberto Lleras Pérez
doaj  

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