Results 71 to 80 of about 8,960,108 (241)

Mine emergency broadcasting system based on Ethernet and voice compression expansion

open access: yesMeikuang Anquan
In response to the problems of coverage blind spots, short intrinsic safety power supply distance, and incomplete functions in the mine emergency broadcasting system, a set of mine emergency broadcasting system with full coverage of emergency ...
Dedong ZOU
doaj   +1 more source

Intrinsic power supply

open access: yes, 2014
This thesis discusses development of intrinsically safe power supply designed for powering devices installed in areas with potentially explosive atmospheres. In this context, the work explains the concepts of intrinsic safety.
Wurzel, Tomáš
core  

Tuning the Optoelectronic Properties of Wide Bandgap Perovskites: Data‐Driven Insights from Combinatorial Synthesis and High‐Throughput Experimentation

open access: yesAdvanced Functional Materials, EarlyView.
Combinatorial vapor deposition enables independent tuning of Cs/Pb and Br/Cl in wide‐bandgap perovskites. Automated multimodal mapping of 500+ compositions reveals a high‐energy optical transition that correlates with enhanced photoluminescence, defining a practical Cs/Pb window.
Alexander Wieczorek   +6 more
wiley   +1 more source

Living and Working Safely Around High-Voltage Power Lines. [PDF]

open access: yes, 1998
High-voltage transmission lines can be just as safe as the electrical wiring in the homes--or just as dangerous. The crucial factor is ourselves: they must learn to behave safely around them.
United States. Bonneville Power Administration.
core   +1 more source

Structural Power Composites Based on High Mass Loading Zn‐Ion Hybrid Supercapacitors with Metal Mesh Current Collectors and Aramid Nanofiber/Glass Fiber Composite Electrolytes

open access: yesAdvanced Functional Materials, EarlyView.
A multifunctional structural power composite is developed by integrating high‐mass‐loading Zn‐ion hybrid supercapacitors with metal mesh current collectors and aramid nanofiber‐based composite electrolytes, enabling simultaneous load‐bearing capability and enhanced areal energy storage.
Yuseung Choi   +8 more
wiley   +1 more source

Do monetary rewards undermine intrinsic motivations of volunteers? Some empirical evidence for Italian volunteers [PDF]

open access: yes
Empirical studies show that intrinsic motivations increase the volunteer labour supply. This paper studies how monetary rewards to volunteers affect their intrinsic motivations.
Fiorillo, Damiano
core  

Functionalizing Micro‐to‐Mesoscopic Electrode Architectures for Regulating Electron Transfer Behaviors in Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
A systematic review is conducted to assess the influence of electrode architecture across micro‐ to mesoscopic length scales on electron‐transfer pathways in electrocatalysis. We discuss the structure‐activity relationships in electrocatalytic applications, including resource recovery and environmental remediation, and provide cost‐effective, efficient
Manshu Zhao   +6 more
wiley   +1 more source

A mine intrinsically safe AD hoc network base station design

open access: yesMeikuang Anquan
Aiming at the problem that the underground communication link of the mine is interrupted and the information of rescuers cannot be exchanged after the disaster, a mine intrinsically safe AD hoc network base station is designed. Based on the SDR platform,
Wenfeng LI   +4 more
doaj   +1 more source

Power for Service

open access: yes, 1944
Includes the history of the Puget Sound Power and Light Company power plants and ...
Puget Sound Power and Light Company
core  

An Edible Chitosan‐Based Acoustic Sensor for Sound‐Responsive Actuation in Edible Robots

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces an edible acoustic sensor for robotic food and edible robotics. Built from a chitosan piezoelectric film between gold electrodes, the sensor enables acoustic communication through ON/OFF keying. Integrated into an edible robot with pneumatically actuated arms and neck, it responds to high‐frequency tones.
Valerio Francesco Annese   +8 more
wiley   +1 more source

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