Results 71 to 80 of about 11,914 (281)

On vortex/wave interactions. Part 1. Non-symmetrical input and cross-flow in boundary layers [PDF]

open access: yes, 1996
The paper studies certain effects of non-symmetry on vortex/wave interactions, for inviscid inflexional waves interacting nonlinearly with the vortex component of the mean flow in boundary-layer transition at large Reynolds number.
Brown, SN, Smith, FT
core   +1 more source

Evaluation of speed humps on pedestrian injuries in Ghana [PDF]

open access: yesInjury Prevention, 2010
Objective To evaluate the effectiveness of speed humps in reducing pedestrian crashes at selected settlements located along the Konongo-Kumasi highway. Materials and Methods The study adopted before and after comparison of police reported casualty ...
F K Afukaar, J Damsere-Derry
openaire   +1 more source

Evidence for Itinerant Ferromagnetic Flat Bands Producing Large Transverse Responses

open access: yesAdvanced Materials, EarlyView.
Itinerant ferromagnetic flat bands are demonstrated in GdCo5 with a high Curie temperature of 940K, a stacked honeycomb–kagome lattice, through angle‐resolved photoemission spectroscopy and magneto‐thermoelectric measurements. These topological flat bands generate large Berry curvaturte, producing gigantic anomalous Nernst effect with record‐high ...
Susumu Minami   +15 more
wiley   +1 more source

Non‐Continuous Iridescent Variable Structural Color Based on Metallic Surface Periodic Structures

open access: yesAdvanced Materials Interfaces, EarlyView.
This study presents an ink‐free laser nanofabrication technique that generates periodic arched microstructures on titanium surfaces, achieving non‐continuous iridescent dual‐color switching. The ridge and side flanks of these structures possess distinct oxide film thicknesses, enabling angle‐dependent selective reflection of specific wavelengths.
XiangWei Liu   +3 more
wiley   +1 more source

Contribution to Analysis of Technical Possibilities in Designing Artificial Humps for Vehicle Speed Limitation

open access: yesPromet (Zagreb), 2003
The purpose of this paper is to analyse the criteria thatshould be taken into consideration when designing the profileof the given humps that would force the drivers to maintain thedesired speed limit and at the same time not to pose any threaton the ...
Zdravko Bukljaš   +2 more
doaj   +1 more source

Mechanical Stress Evolution in Polycrystalline Ge Thin Films Under MeV Ion Irradiation

open access: yesAdvanced Materials Interfaces, EarlyView.
Irradiation of polycrystalline Ge thin films with 1.8 MeV Au ions alters residual stress through defect generation and lattice expansion. Increasing fluence drives progressive lattice disorder and eventual amorphization. Polycrystalline Ge resists amorphization longer than crystalline Ge, as grain boundaries facilitate defect diffusion, significantly ...
Karla J. Paz Corrales   +10 more
wiley   +1 more source

Effectiveness of the Speed Humps Type “Sleeping Policeman” [PDF]

open access: yes, 2014
Анализируются условия движения и риска возникновения аварий в зоне нерегулируемых пешеходных переходов. Выявлена необходимость совершенствования организации дорожного движения.
Артюшевская, Н. В.   +5 more
core  

Layer Formations in Electron Beam Sintering [PDF]

open access: yes, 2007
Among direct metal processing manufacturing technologies (Rapid Manufacturing), Electron Beam Sintering (EBS) exhibits a high application potential.
Kahnert, M., Lutzmann, S., Zaeh, M. F.
core   +1 more source

The effectiveness of new 3D visual effect speed hump in speed reduction [PDF]

open access: yesMATEC Web of Conferences, 2018
Intersection is a function of parsing and altering traffic movement. The safety of vehicle manoeuvres at the junction depends on the minimum speed. The purpose of this study is to identify the effectiveness of the usage of temporary speed hump (3D visual effect) to reduce vehicles speed approaching a Priority Junction. This study was conducted at three
Kamarudin Ambak   +4 more
openaire   +2 more sources

Topological Point Defects in SmC* Liquid Crystals Under Mechanical Disturbance

open access: yesAdvanced Materials Interfaces, EarlyView.
Tangetial air jet shear inducess island formation and nucleates topological point defects in uniform SmC films. Island bounded by edge dislocation loops shrink and transform into isolated point defects under continued shear. Mechanical perturbatio provides a controllable route for defect engineering in smectric liquid crystal thin films.
Gunganist Kongklad   +3 more
wiley   +1 more source

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