Results 111 to 120 of about 1,485,054 (329)

Realization of Spin‐locked Acoustic Helical Landau Levels in both Hexagonal and Square Lattices

open access: yesAdvanced Science, EarlyView.
Acoustic helical Landau levels rooted in quantum spin Hall systems are achieved by linearly increasing the local bandgap through the lifting of the double Dirac cone in acoustic crystals. Large‐area conveyance of acoustic energy facilitated by these helical Landau levels is demonstrated.
Yafeng Chen   +5 more
wiley   +1 more source

The accident risk of motorcyclists [PDF]

open access: yes, 2004
This report contains the findings of a study to explore and quantify the interacting influences which determine motorcyclist accident liabilities. It was conducted on behalf of Road Safety Division, Department for Transport.
Baughan, C.J.   +4 more
core  

Optimizing Polymer Composites for Effective Electromagnetic Shielding: The Role of Carbon Filler Properties and Temperature

open access: yesAdvanced Electronic Materials, EarlyView.
Polymer composites electromagnetic properties are promising for shielding applications. This study explores how filler geometry, orientation, and temperature impact shielding performance. Spherical carbon black enhances scattering, while anisotropic carbon nanotubes (CNTs) show directional wave propagation. CNT orientation critically affects efficiency,
Lijun Huang   +8 more
wiley   +1 more source

Development and Validation of a Practical Instrument for Injury Prevention: The Occupational Safety and Health Monitoring and Assessment Tool (OSH-MAT)

open access: yesSafety and Health at Work, 2018
Background: The Occupational Safety and Health Monitoring and Assessment Tool (OSH-MAT) is a practical instrument that is currently used in the German woodworking and metalworking industries to monitor safety conditions at workplaces. The 12-item scoring
Yi Sun   +4 more
doaj  

Depth‐Customizable 3D Electrode Array for Recording Functional Connectivity in the Brain

open access: yesAdvanced Electronic Materials, EarlyView.
In this study, a depth‐adjustable, flexible 3D multi‐shank electrode array that produces precise neural recordings at various brain depths is developed. Integrating 2D flexible electrode arrays with a modular supporting board allowed the insertion depth to be easily adjusted without re‐fabrication.
Minseok Kim   +5 more
wiley   +1 more source

Development Status and Future Prospects of Hydrogen Energy Technology: Production, Storage, and Cost Analysis

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Hydrogen is an energy carrier, produced from renewable and nonrenewable resources. It can be stored in a variety of materials and transported to distant locations. This article reviews progress in hydrogen technology by looking at environmental and economic impact, cost analysis, and policy support at government level as way forward for bringing it to ...
Xuexue Pan   +5 more
wiley   +1 more source

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