Results 241 to 250 of about 595,178 (339)

Muscle strength, task performance and low back load in nurses [PDF]

open access: green, 1998
M.P. de Looze   +4 more
openalex   +1 more source

Optical Wireless Communications with Metasurfaces: Current Status and Potential for Intelligent Communications

open access: yesAdvanced Photonics Research, EarlyView.
Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang   +7 more
wiley   +1 more source

Optical Microfiber Biomedical Sensors: Classification, Applications, and Future Perspectives

open access: yesAdvanced Sensor Research, EarlyView.
This review delves deeply into the various types of optical microfiber biosensors, grounded firmly in their fundamental principles, and underscores their indispensable roles in pushing forward biomedical advancements. It examines the latest advancements, challenges faced by these biosensors in practical applications, future directions, breakthroughs ...
Lili Liang   +5 more
wiley   +1 more source

Dynamic strength of the quadriceps muscle and sports activity [PDF]

open access: bronze, 1999
Thomas W. Hahn   +2 more
openalex   +1 more source

Design of Highly Stretchable, Self‐Adhesive Ionic Conductive Hydrogels for Wearable Strain Sensors

open access: yesAdvanced Sensor Research, EarlyView.
A novel ionic conductive hydrogel is achieved by introducing phytic acid into semi‐interpenetrating cross‐linked network of poly(acrylamide‐co‐N‐(hydroxymethyl) acrylamide) and chitosan hydrogels, which exhibits high stretchability, favorable electrical conductivity, reversible adhesiveness, and excellent strain sensing performance, simultaneously ...
Huawei Gao   +9 more
wiley   +1 more source

745 NONFATIGUING MUSCLE STRENGTHENING EXERCISE CAN SAFELY INCREASE STRENGTH IN POSTPOLIO PATIENTS

open access: bronze, 1993
James C. Agre   +5 more
openalex   +1 more source

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