Results 71 to 80 of about 63,183 (273)

Running performance of an aerodynamic journal bearing with squeeze film effect [PDF]

open access: yes, 2013
Results of theoretical and experimental studies concerning the performance of an aerodynamic journal bearing which running is assisted by squeeze film ultrasonic levitation (SFUL) are presented in this paper.
Ha   +13 more
core   +1 more source

Emergent Freestanding Complex Oxide Membranes for Multifunctional Applications

open access: yesAdvanced Materials, EarlyView.
This review surveys freestanding oxide membranes and covers fabrication and three pathways for studies and devices: strain‐free and strained membranes, and van der Waals‐integrated heterostructures. We show how coupled oxide responses map onto these routes and cross‐couple to expand behaviors.
Baowen Li   +6 more
wiley   +1 more source

Mass-dimensional charakteristics of wind-driven powerplants with horizontal axis of rotation of wind wheel [PDF]

open access: yes, 2015
В роботі проведено аналіз базових конструкцій вітроенергетичних установок з горизонтальною віссю обертання вітроколеса. Проведено порівняння маси, об'єму та енергоефективності цих установок.
Fedorov, S. I.   +5 more
core   +1 more source

Respiratory Signal Processing and Analysis Using Flexible Capacitive Sensor Data

open access: yesAdvanced Materials Technologies, EarlyView.
Capacitive pressure sensors based on poly(glycerol sebacate) (PGS) substrates are developed for continuous, non‐invasive respiratory monitoring. Integrated with a signal processing algorithm, they enable accurate tracking of thoracic expansion and retraction.
Bernardo A. Vicente   +3 more
wiley   +1 more source

Improvement of urban passenger transport ticketing systems by deploying intelligent transport systems

open access: yesTransport, 2006
The main advantages and disadvantages of conventional and intelligent ticketing systems and possible positive outcomes when introducing intelligent transport solutions ‐ namely smart cards or e‐ticketing instead of conventional ones (paper tickets and ...
Gražvydas Jakubauskas
doaj   +1 more source

Photoluminescence-Based Current-Voltage Characterisation of Individual Subcells in Multi-Junction Devices [PDF]

open access: yes, 2015
We demonstrate a photoluminescence based, contactless method to determine the current-voltage characteristics of the individual subcells in a multi-junction solar cell.
Alonso Alvarez, D   +4 more
core   +1 more source

Recent Advances of Slip Sensors for Smart Robotics

open access: yesAdvanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang   +8 more
wiley   +1 more source

Anisotropic Hc2 of K0.8Fe1.76Se2 determined up to 60 T [PDF]

open access: yes, 2011
The anisotropic upper critical field, Hc2(T), curves for K0.8Fe1.76Se2 are determined over a wide range of temperatures down to 1.5 K and magnetic fields up to 60 T.
Altarawneh, M. M.   +7 more
core   +4 more sources

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

open access: yesAdvanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik   +7 more
wiley   +1 more source

Non-Contact Heart Rate and Respiration Rate Monitoring for Elderly Care

open access: yesCurrent Directions in Biomedical Engineering
As the nursing shortage in Germany continues to intensify, the necessity for user-friendly assistance systems is becoming increasingly important. This paper describes an approach for the automatic and regular recording of vital signs using consumer-grade
Kobel Svenja Nicola   +4 more
doaj   +1 more source

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