Results 41 to 50 of about 221,993 (293)

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

open access: yesAdvanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi   +7 more
wiley   +1 more source

Analysis of the development of tidal energy and its implementation

open access: yesEnergy, Sustainability and Society
Background In the recent years, owing to the increasing carbon emissions from anthropogenic activities, the challenges caused by global climate change, including the greenhouse effect, sea-level rise, and extreme weather events, have become increasingly ...
Xiaochao Li   +9 more
doaj   +1 more source

A tidal energy assessment in the strait of Messina

open access: yesEnergy Nexus
This study reports an energy assessment of a tidal power plant located in the strait of Messina (Mediterranean Sea). Tidal currents are not adequately exploited as renewable energy sources all over the world, even if their potential is not negligible and
Michele Agueci, Emiliano Pipitone
doaj   +1 more source

A State-of-the-Art Review of Structural Testing of Tidal Turbine Blades

open access: yesEnergies, 2023
Over the last two decades, the tidal energy industry has laid the groundwork for creating commercially viable tidal power generation projects to strengthen sustainable energy policies around the world.
Tenis Ranjan Munaweera Thanthirige   +3 more
doaj   +1 more source

Rational Tuning of Hygroscopic Oscillation of Stacked Nanoflake Assemblies for Continuous Ambient Energy Harvesting

open access: yesAdvanced Materials, EarlyView.
Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang   +5 more
wiley   +1 more source

Geographical analysis of the Pacific and Atlantic Oceans in the Americas: A comparative Study of Tidal Energy Potential [PDF]

open access: yesE3S Web of Conferences
Tidal energy offers a promising renewable energy source, leveraging predictable oceanic forces to generate electricity. However, the potential for tidal energy varies significantly across regions due to geographical and oceanographic factors.
Espinoza Fadua, Parada María
doaj   +1 more source

Tidal friction in close-in satellites and exoplanets. The Darwin theory re-visited

open access: yes, 2008
This report is a review of Darwin's classical theory of bodily tides in which we present the analytical expressions for the orbital and rotational evolution of the bodies and for the energy dissipation rates due to their tidal interaction.
A. Lemaitre   +33 more
core   +1 more source

Structural Modulation of Charge Transfer in Donor–Acceptor Systems: Effects of Donor Type and Connectivity

open access: yesAdvanced Optical Materials, EarlyView.
A coherent phthalimide acceptor platform with planar (Cz—carbazole) and spiro‐type (SAF—spiroacridine fluorene) donors enables systematic tuning of donor geometry and coupling, driving the evolution of excited‐state topology from classical CT‐TADF and fluorescence/RTP to CT‐driven and LE‐assisted TADF with OLED efficiencies ≈ 36%.
Christopher Anton Wallerius   +8 more
wiley   +1 more source

Development of multiple tidal tails around globular clusters and dwarf satellite galaxies

open access: yes, 2014
The formation and evolution of tidal tails like those observed around some globular clusters and dwarf satellite galaxies is examined with an N-body simulation.
Burkert, Andreas, Hozumi, Shunsuke
core   +1 more source

Ultrarelativistic Motion: Inertial and Tidal Effects in Fermi Coordinates [PDF]

open access: yes, 2004
Fermi coordinates are the natural generalization of inertial Cartesian coordinates to accelerated systems and gravitational fields. We study the motion of ultrarelativistic particles and light rays in Fermi coordinates and investigate inertial and tidal ...
Chicone, C., Mashhoon, B.
core   +3 more sources

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