Results 41 to 50 of about 5,232 (217)

High-absorbance resonant-cavity-enhanced free-standing Ge photodetector for infrared detection at 1550 nm wavelength

open access: yesAIP Advances, 2023
A novel free-standing resonant-cavity-enhanced (RCE) Ge thin-film absorber is designed with a bottom distributed Bragg reflector (DBR) for infrared photodetection at 1550 nm wavelength based on a Si substrate.
Ching-Yu Hsu, Zingway Pei, Jia-Ming Liu
doaj   +1 more source

Polyethersulfone membrane coated with Dragon blood resin: Effect of input parameters and optimization using response surface methodology

open access: yesSouth African Journal of Chemical Engineering, 2023
This study investigates the effectiveness of dragon blood resin (DBR) as a hydrophilic additive to prevent fouling on membrane surfaces. The input parameters, including DBR, Fe3+, NMP concentration, and coating time were studied to understand their ...
Aulia Chintia Ambarita   +8 more
doaj   +1 more source

Form flows function: Learner‐centered game Re‐design in a STEM classroom

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Re‐designing games facilitates interest‐driven learning and immerses learners in systems thinking. However, there are limited studies exploring how the form and function of tabletop games influence learners' design decisions and learning experiences. To address this gap, we conducted a mixed‐methods study in a STEM classroom in western Canada.
Farzan Baradaran Rahimi   +2 more
wiley   +1 more source

Novel 1064 nm DBR lasers combining active layer removal and surface gratings

open access: yesElectronics Letters, 2021
The fabrication and characterisation details of novel distributed Bragg reflector (DBR) diode lasers emitting around 1064 nm are presented here. The AlGaAs epitaxial layer stack used here allows the removal of the active quantum wells in passive sections
O. Brox   +8 more
doaj   +1 more source

Methodological Pathways for Circular Economy in Energy and Environmental Studies: A Structured Review Toward Sustainable Development

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The circular economy (CE) has become a major focus in energy and environmental (E&E) research, as it helps advance sustainable development, improve resource efficiency and alleviate environmental pressure. Even so, the literature is still fragmented, particularly in the CE themes it explores, the levels of analysis it adopts and the methods ...
Jahira Debbarma   +2 more
wiley   +1 more source

Narrow Linewidth Distributed Bragg Reflectors Based on InGaN/GaN Laser

open access: yesMicromachines, 2019
A variety of emerging technologies, such as visible light communication systems, require narrow linewidths and easy-to-integrate light sources. Such a requirement could be potentially fulfilled with the distributed Bragg reflector (DBR) lasers, which are
Wuze Xie   +5 more
doaj   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

open access: yesFlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan   +7 more
wiley   +1 more source

Anti-Doping Monitoring Web-Based Android for Athletes Disabilities

open access: yesJournal of Coaching and Sports Science
The usage of doping has been banned in the world of sports. This ban is regulated by law and must be adhered to by all athletes. This research aimed to identify the need for efforts to prevent doping use and develop a monitoring tool for doping ...
Fadilah Umar   +3 more
doaj   +1 more source

Preparing Prospective Counselors for Classroom‐Based Career Guidance Using Video Vignettes—Mechanisms and Effects

open access: yesJournal of Employment Counseling, EarlyView.
ABSTRACT Career guidance in schools is often delivered by counselors who take on instructional roles. Video vignettes are widely used in teacher education. We developed vignettes for counselor training in classroom‐based guidance in Germany. This study examines how prospective counselors engage with these vignettes and how this relates to changes in ...
Teresa Giek   +2 more
wiley   +1 more source

Dry brewery residue in broiler chickens feed

open access: yesSemina: Ciências Agrárias, 2018
The residual from the food industry has the potential to replace the traditional ingredients used in animal feed, and the dry brewery residue (DBR) may be an alternative for this purpose.
Wiliam Parpinelli   +4 more
doaj   +1 more source

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