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Introduction: With the introduction of increasingly powerful audio equipment and increase of personal mobile audio devices in the 21st century, the prevalence of noise-induced hearing loss (NIHL) in young adults is expected to increase. This increase, estimated to impact 30 million adults in the next four decades, is due in part to recreational exposure. While many young adults have a general understanding of NIHL, a detailed education on various topics of NIHL could further promote adherence to the use of preventive measures.
View Article and Find Full Text PDFOptimization of surface roughness for titanium alloy based on multi-strategy fusion snake algorithm.
PLoS One
January 2025
School of Mechanical Engineering, Liaoning Technical University, Fuxin, China.
Titanium alloy is known for its low thermal conductivity, small elastic modulus, and propensity for work hardening, posing challenges in predicting surface quality post high-speed milling. Since surface quality significantly influences wear resistance, fatigue strength, and corrosion resistance of parts, optimizing milling parameters becomes crucial for enhancing service performance. This paper proposes a milling parameter optimization method utilizing the snake algorithm with multi-strategy fusion to improve surface quality.
View Article and Find Full Text PDF3D modelling and simulation of thermal effects and dispersion of particles carrying infectious respiratory agents in a railway transport coach.
Sci Rep
January 2025
FLUIDIAN, 95450, Commeny, France.
Even though the COVID-19 pandemic now belongs to the long history of infectious diseases that have struck humanity, pathogenic biological agents continue to pose a recurring threat in private places, but also and mainly in places where the public congregates. In our recent research published in this journal in 2022 and 2023, we considered the illustrative example of a commuter train coach in which a symptomatic or asymptomatic passenger, assumed to be infected with a respiratory disease, sits among other travellers. The passenger emits liquid particles containing, for example, COVID-19 virions or any other pathogen.
View Article and Find Full Text PDFMillions of women worldwide have breast cancer, a common and possibly fatal illness according to WHO Reports. A genetic mutation usually causes breast adenocarcinomas. Only 5-10% of cancers are induced by genetic mutations that develop with age, and the "wear and tear" of general life causes 85-90% of breast cancers.
View Article and Find Full Text PDFCompressing slippery surface-assembled amphiphiles for tunable haptic energy harvesters.
Sci Adv
January 2025
Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA.
A recurring challenge in extracting energy from ambient motion is that devices must maintain high harvesting efficiency and a positive user experience when the interface is undergoing dynamic compression. We show that small amphiphiles can be used to tune friction, haptics, and triboelectric properties by assembling into specific conformations on the surfaces of materials. Molecules that form multiple slip planes under pressure, especially through π-π stacking, produce 80 to 90% lower friction than those that form disordered mesostructures.
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