Results 191 to 200 of about 1,214,191 (402)

AI‐Enhanced Gait Analysis Insole with Self‐Powered Triboelectric Sensors for Flatfoot Condition Detection

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
The given research presents an innovative insole‐based device employing self‐powered triboelectric nanogenerators (TENG) for flatfoot detection. By integrating TENG tactile sensors within an insole, the device converts mechanical energy from foot movements to electrical signals analyzed via machine learning, achieving an 82% accuracy rate in flatfoot ...
Moldir Issabek   +7 more
wiley   +1 more source

Pressure‐Induced Structural and Optoelectronic Modulations in 2D Dion‐Jacobson Hybrid Lead Iodide Perovskites With a Rigid Spacer

open access: yesAdvanced Optical Materials, EarlyView.
Compression to ≈2.0 GPa results in a non‐monotonic enhancement of the Pb‐I bond distortion, rarely observed in other 2D lead‐iodide hybrid perovskites. The octahedral distortion together with the rigidity of spacer cation are found to play a dominant role in determining the optoelectronic properties of DPDAPbI4 under high pressure.
Aditya Kutty   +9 more
wiley   +1 more source

Hiperventilação: A terapia cognitivo-comportamental e a técnica dos exercícios de indução dos sintomas no transtorno de pânico Hyperventilation: The cognitive-behavior-therapy and the technique of the exercises in the induction of panic disorder symptoms

open access: yesRevista Portuguesa de Pneumologia, 2008
O transtorno de pânico (TP) caracteriza -se por ataques agudos de ansiedade frequentes e recorrentes. A actual concepção para o TP realça o medo das sensações corporais a partir do momento em que o indivíduo associa de forma equivocada as sensações ...
Anna Lucia Spear King   +2 more
doaj  

Optical Chaos Generation and Applications

open access: yesAdvanced Photonics Research, EarlyView.
This review comprehensively examines optical chaos generation via feedback, injection, and optoelectronic methods, emphasizing bandwidth enhancement and time‐delay suppression. Applications include chaos‐synchronized secure communication, physical random number generation, chaotic lidar for cm‐level detection, distributed fiber sensing, and terahertz ...
Wenhui Chen   +8 more
wiley   +1 more source

A NEW METHOD FOR STUDYING BREATHING, WITH OBSERVATIONS UPON NORMAL AND ABNORMAL SUBJECTS [PDF]

open access: bronze, 1944
Leslie Silverman   +3 more
openalex   +1 more source

Q‐Switched Mode‐Locking in Er‐Doped ZrF4‐BaF2‐LaF3‐AlF3‐NaF Fiber Lasers Using Carbon Nanotube–Saturable Absorber and GaSb‐Based Semiconductor‐Saturable Absorber Mirror

open access: yesAdvanced Photonics Research, EarlyView.
We compare Q‐switched mode‐locking in Er‐doped ZrF4‐BaF2‐LaF3‐AlF3‐NaF fiber lasers using an aerosol‐synthesized carbon nanotube (CNT)‐saturable absorber with a GaSb‐based semiconductor‐saturable absorber mirror (SESAM). While SESAM enables shorter pulses with higher peak power, CNT absorbers offer tunability and cost‐effectiveness.
Boris Perminov   +5 more
wiley   +1 more source

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