Results 51 to 60 of about 31,174 (249)

Helmet use among motorcyclists: observational study in the city of Mar del Plata, Argentina Uso do capacete por motociclistas: estudo observacional na cidade de Mar del Plata, Argentina

Revista de Saúde Pública, 2008
The objective of the study was to assess the use of helmets in a community where helmet use is mandatory but low as there is no police enforcement. A sample comprising 451 motorcyclists in the city of Mar del Plata, Argentina, was studied in 2006.
Rubén Daniel Ledesma, Raquel Inés Peltzer   +1 more
doaj   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

Advanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti, Sergio Martínez‐Saiz, Morena Cervino, Edoardo Stanzani, Sandra Jenatsch, Qingsen Zeng, Joo Sung Kim, Dong‐Hyeok Kim, Eojin Yoon, Tae‐Woo Lee, Daniel Tordera, Henk J. Bolink   +11 more
wiley   +1 more source

Evaluation of 5G Systems Microstrip Antennas Performance and Approaches for SAR Reduction of Human Head at the Frequency 38 GHz

Доклады Белорусского государственного университета информатики и радиоэлектроники
5G systems have many interesting advantages, that’s why their popularity around the world is grow ing rapidly. However, it is necessary to evaluate the potential negative impact of electromagnetic radiation from devices of these systems on human tissue ...
H. Ayad, R. Alhtab, M. Alzawi
doaj   +1 more source

Evaluation of two cooling devices for construction workers by a thermal manikin

Fashion and Textiles, 2017
Two kinds of wearable cooling devices were evaluated for their cooling effect by a thermal manikin. All measurements were conducted in a climatic chamber. The cooling fans worked almost 3 h.
Katsuhiro Miura, Kenji Takagi, Kenji Ikematsu   +2 more
doaj   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

FEASIBILITY OF A PILOT RANDOMIZED CONTROLLED TRIAL ON CRANIAL REMOLDING ORTHOSIS FOR SEVERE DEFORMATIONAL PLAGIOCEPHALY

Canadian Prosthetics & Orthotics Journal
BACKGROUND: Prevalence of deformational plagiocephaly (DP) has increased since the “Back to sleep” campaign to counter sudden infant death syndrome.
Pegah Amir-Yazdani, Rasha Alhaeik, Marisol Gimeno, Katy Fontaine, Andrei Bursuc, Alexander G Weil, Camille K Costa   +6 more
doaj   +1 more source

Attenuation of earmuffs used simultaneously with respiratory protective devices

Medycyna Pracy, 2017
Background: In the work environment, apart from the noise, employees may be exposed to other harmful factors. Therefore, they wear hearing protectors and other personal protective equipment.
Emil Kozłowski, Rafał Młyński
doaj   +1 more source

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

Advanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández, Iason Konstantinos‐Douveas, Claas Abert, Elina Zhakina, Sandra Ruiz‐Gómez, Claudia Fernández‐González, Luke Alexander Turnbull, Sebastian Wintz, Markus König, Simone Finizio, Markus Weigand, Naëmi Leo, Dieter Suess, Aurelio Hierro‐Rodríguez, Amalio Fernández‐Pacheco, Claire Donnelly   +15 more
wiley   +1 more source

Deaths from Motorcycle Accidents: An Autopsy Study from Turkey

Arab Journal of Forensic Sciences & Forensic Medicine, 2018
Motorcyclists and pillion passengers in road traffic accidents have an increased risk of morbidity and mortality because of lack of adequate safety systems.
Volkan Ünal, Esra Ö. Ünal, Fatma Koral, Zafer Çetinkaya, Sermet Koç   +4 more
doaj   +1 more source