Results 91 to 100 of about 1,144,455 (296)

Recent Advances in Wide‐Bandgap Perovskite Solar Cells

Advanced Materials, EarlyView.
Ubiquitous defects predominately account for photo‐instability and open‐circuit voltage losses in wide‐bandgap perovskite solar cells (WBG PSCs). This review comprehensively presents the underlying impact mechanisms, summarizes the advanced optimization strategies across various functional layers and their interfaces to develop efficient and stable WBG
Jianjun Mei, Feng Yan
wiley   +1 more source

Perceived safety in community and service settings among young adults experiencing homelessness: Differences by sexual and gender identity

American Journal of Community Psychology, Volume 70, Issue 3-4, Page 340-351, December 2022., 2022
Abstract Homelessness poses risks to the health and safety of young adults; particularly among sexual and gender minority (SGM) young adults. The current study sought to better understand service use and perceived safety in community and service settings among SGM and cisgender heterosexual (cis‐hetero) young adults experiencing homelessness. Data come
Graham DiGuiseppi, Sara Semborski, Harmony Rhoades, Jeremy Goldbach, Benjamin F. Henwood   +4 more
wiley   +1 more source

Durable Proton Exchange Membrane Based on Polymers of Intrinsic Microporosity for Fuel Cells

Advanced Materials, EarlyView.
A novel composite proton exchange membrane (PEM) design that leverages carboxylic acid‐functionalized polymers of intrinsic microporosity (cPIM‐1) and polyvinylpyrrolidone (PVP). Harnessing Lewis acid‐base interactions enables the development of a synergistic microporous structure that confines phosphoric acid clusters, enhancing proton conductivity ...
Xiaochen Yang, Zhiming Feng, Mustafa Alshurafa, Ming Yu, Andrew B. Foster, Heng Zhai, Tianmu Yuan, Yiheng Xiao, Carmine D'Agostino, Ling Ai, Maria Perez‐Page, Keenan Smith, Fabrizia Foglia, Adam Lovett, Thomas S. Miller, Jianuo Chen, Peter M. Budd, Stuart M. Holmes   +17 more
wiley   +1 more source

The effect of room acoustics on the sleep quality of healthy sleepers

Noise and Health, 2016
Introduction: Noise is one of the factors that can seriously disturb sleep, and sound volume is an important factor in this context. One strategy involves avoiding exposure to sounds in the night, while entail the minimization of background noise in a ...
Ingo Fietze, Charlotte Barthe, Matthias Hölzl, Martin Glos, Sandra Zimmermann, Ralf Bauer-Diefenbach, Thomas Penzel   +6 more
doaj   +1 more source

Thermally Activated Swelling and Wetting Transition of Frozen Polymer Brushes:a New Concept for Surface Functionalization

Advanced Materials, EarlyView.
A novel approach is introduced that leverages polymer phase transitions to modulate brush behavior. The oleophilic bottle brush system exhibits two distinct melting transitions—bulk and surface—enabling a two‐stage swelling and wetting transition.
Luciana Buonaiuto, Sander Reuvekamp, Billura Shakhayeva, Enqing Liu, Franziska Neuhaus, Björn Braunschweig, Sissi de Beer, Frieder Mugele   +7 more
wiley   +1 more source

Effects of Fiber Denier, Fiber Cross-Sectional Shape and Fabric Density on Acoustical Behavior of Vertically Lapped Nonwoven Fabrics [PDF]

Journal of Engineered Fibers and Fabrics, 2008
Acoustical insulation and absorption properties of nonwoven fabrics depend on fiber geometry and fiber arrangement within the fabric structure. The different structures of the fibers result in different total surface areas of nonwoven fabrics.
Mevlut Tascan, Ph.D., Edward A. Vaughn, Ph.D.   +1 more
doaj  

Leveraging Multifaceted Polyphenol Interactions: An Approach for Hair Loss Mitigation

Advanced Materials Interfaces, EarlyView.
This study presents tannic acid as an effective alternative to traditional hair loss treatments. Acting as an adhesion mediator, tannic acid binds to keratin on the hair surface and sequesters SCANDAL—a blend of salicylic acid, niacinamide, and dexpanthenol—allowing gradual release to hair follicles.
Eunu Kim, Geon Min Lee, Haeshin Lee
wiley   +1 more source

Reverberation chamber and its verification for acoustic measurements

MATEC Web of Conferences, 2016
Reverberation rooms are useful for measurement of the acoustic quantities of machines that operate in long cycles, however, current reverberation chamber design practices often lead to known issues with reproducibility and repeatability of measured data.
Drabek Pavel, Zalesak Martin
doaj   +1 more source

Atomic Layer Deposition of ZnO Coating on Biodegradable Fe‐Based Alloys

Advanced Materials Interfaces, EarlyView.
A biodegradable Fe69Mn30C1 alloy is coated with ZnO using atomic layer deposition at 100 °C. Coating thickness impacts surface roughness, wettability, and in vitro degradation while maintaining hydrophilicity. The ZnO coating exhibits significant antibacterial activity against Staphylococcus aureus, achieving an inhibitory rate of up to 99.2%, and can ...
Birgit Paul, Amin Bahrami, Veronika Hahn, Antje Quade, Amit Datye, Konrad Kosiba, Stefan Pilz, Phil Goldberg, Udo D. Schwarz, Frank Hempel, Julia Hufenbach, Kornelius Nielsch   +11 more
wiley   +1 more source

Speech Dereverberation with Context-aware Recurrent Neural Networks [PDF]

arXiv, 2017
In this paper, we propose a model to perform speech dereverberation by estimating its spectral magnitude from the reverberant counterpart. Our models are capable of extracting features that take into account both short and long-term dependencies in the signal through a convolutional encoder (which extracts features from a short, bounded context of ...
arxiv