Results 71 to 80 of about 1,483 (262)

Development of safety performance measures for different crashes severity at urban roundabouts

open access: yesResults in Engineering
Roundabouts are widely utilized due to their perceived safety benefits compared to other unsignalized intersections. Studies have demonstrated that roundabouts are effective in reducing the frequency and severity of traffic crashes.
Taqwa I. Alhadidi   +2 more
doaj   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

open access: yesAdvanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti   +12 more
wiley   +1 more source

Safety Effectiveness of Converting Conventional Intersections to Roundabouts: Case Study in the City of Niš

open access: yesPromet (Zagreb), 2016
Intersections present a big safety problem in traffic since there has been an increased risk of crashes because of conflicts in the flows intersecting.
Milan Vujanić   +3 more
doaj   +1 more source

Miniature Soft Robot With Magnetically Reprogrammable Surgical Functions

open access: yesAdvanced Materials, EarlyView.
Miniature soft robots have great prospects to revolutionize minimally invasive treatments. Here we present a miniature soft robot, which can be reprogrammed to perform five surgical functionalities with six‐degrees‐of‐freedom motions. This soft robot can prospectively make minimally invasive surgery considerably safer and painless, and enable ...
Chelsea Shan Xian Ng   +4 more
wiley   +1 more source

Determinants of crash numbers and constellations at turbo roundabouts in Germany

open access: yesTraffic Safety Research
Turbo roundabouts are a relatively new design. Thus far, research on their safety has focused on comparisons with other types of intersection and the effects of physical lane dividers.
Armin Kollascheck   +5 more
doaj   +1 more source

Anomalous Crystallinity and Magnetism in Chemically Disordered Coherent Heterostructures

open access: yesAdvanced Materials, EarlyView.
Coherent isostructural high‐entropy oxide heterostructures are realized despite remarkable >5% interfacial lattice distortion. The resulting buried interface exhibits abrupt valence reconstruction which contributes to 2 × enhanced exchange bias in the heterostructure relative to constituent layers, demonstrating how chemical disorder enabled anomalous ...
Saeed S. I. Almishal   +11 more
wiley   +1 more source

Decoupling Photochemical and Photothermal Effects Using Molecular Motors Enables Fast, Intelligent, and Life‐Like Motions in Soft Materials

open access: yesAdvanced Materials, EarlyView.
A light‐responsive liquid crystal (LC) polymer network integrating molecular rotary motors and photothermal converters enables the decoupling of photochemical and photothermal effects. Selective wavelength activation allows orthogonal control over persistent shape encoding and fast reversible motion, enabling programmable soft robots capable of complex
Guiying Long   +3 more
wiley   +1 more source

Spatial distribution of heavy metals in the topsoil on roundabouts in Zielona Góra, Poland

open access: yesEnvironmental Protection and Natural Resources, 2015
In most cases, traffic pollution deposition is linear with regularities in its distribution in transect routes (canyon-type effect). The aim of this study is to identify different characteristics of heavy metal deposition on large roundabouts, which are ...
Kostecki Jakub   +7 more
doaj   +1 more source

Magnetic DNA Origami Nanorotors

open access: yesAdvanced Materials, EarlyView.
Magnetic actuation is a powerful and broadly applicable actuation mechanism due to its programmability and compatibility with biological entities. Here we demonstrate magnetic DNA origami nanorotors (MADONAs) by assembling magnetic nanocubes on DNA origami.
Lennart J. K. Weiß   +13 more
wiley   +1 more source

Soft Skins With Reversible Thickness Morphing: Materials, Mechanisms, and Applications

open access: yesAdvanced Materials, EarlyView.
Evolution of electronic skin (e‐skin) technologies toward adaptive, multifunctional soft skins. Phase I highlights early rigid and discrete sensory interfaces. Phase II shows the transition toward flexible, stretchable, and large‐area e‐skin. Phase III captures the emergence of computational e‐skin.
Oliver Ozioko   +2 more
wiley   +1 more source

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