Results 111 to 120 of about 4,061,646 (326)

Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna

open access: yesAdvanced Functional Materials, EarlyView.
We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz   +9 more
wiley   +1 more source

Oil Churning losses in Automatic Transmission

open access: yes, 2013
Lately the discussion on how big impact vehicles has on the environment has grown bigger and bigger. The vehicle manufacturers are building cars, trucks, and wheel loaders etc. that are getting more and more fuel efficient for every year. But where do the engineers at the companies make the improvements? The drive train is one area of the vehicle where
openaire   +1 more source

The Importance of Two-Sided Heterogeneity for the Cyclicality of Labour Market Dynamics [PDF]

open access: yes
Using two data sets derived from German administrative data, including a linked employer-employee data set, we investigate the cyclicality of worker and job flows.The analysis stresses the importance of two-sided labour market heterogeneity in this ...
Peggy David, Ronald Bachmann
core   +3 more sources

高速轻载齿轮箱功率损失分析

open access: yesJixie chuandong, 2014
Through comparing and analysis of the power loss calculation mode of high-speed gear rotating device,the power loss calculation method of high-speed gearbox with light load is found.Through the calculation and analysis,the power loss of high-speed ...
吴鲁纪   +3 more
doaj  

Multi-objective optimization of air-oil two-phase flow for helicopter planetary gear bearings based on the Kriging surrogate model and NSGA-II algorithm

open access: yesEngineering Applications of Computational Fluid Mechanics
Due to the limited spatial constraints and complex motion of aerospace planetary gear reducers, under-race lubrication is employed for planetary gear bearings to ensure adequate lubrication performance with minimal oil flow.
Junda Chen   +6 more
doaj   +1 more source

The Cuttlebone Blueprint for Multifunctional Metamaterials: Design Taxonomy, Functional Decoupling, and Future Horizons

open access: yesAdvanced Functional Materials, EarlyView.
Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley   +1 more source

Churning losses and efficiency in gearboxes

open access: yes, 2014
Efficient transmissions systems are key to producing competitive motor vehicles that have a smaller environmental impact. Gears are the main components in vehicle transmissions and although they are already highly efficient, there is still room for improvement.
openaire   +1 more source

Targeting Post‐Irradiation Thyroid Dysfunction: Electrospun Scaffolds As A Dual‐Action Approach for Antioxidant and Immune Modulation

open access: yesAdvanced Healthcare Materials, EarlyView.
Radiation‐induced hypothyroidism follows head and neck radiotherapy due to oxidative stress and inflammation. Electrospun polycaprolactone scaffolds containing adenosine have potential to modulate thyroid repair. Scaffolds enhance thyrocyte proliferation, antioxidant enzymes glutathione peroxidase and catalase, reduce senescence and apoptosis markers ...
Maria Heim   +5 more
wiley   +1 more source

Cascading collapse of online social networks

open access: yes, 2017
Online social networks have increasing influence on our society, they may play decisive roles in politics and can be crucial for the fate of companies. Such services compete with each other and some may even break down rapidly.
Kertész, János, Török, János
core   +2 more sources

Modular Platform for Rapidly Investigating Long‐Distance Propagation of Human Neural Network Activity

open access: yesAdvanced Healthcare Materials, EarlyView.
This study presents the first human neural organoid culture model capable of rapidly exhibiting long‐distance neural network propagation, thus delivering a system to experimentally investigate large‐scale communication during normal and diseased states.
Megh Dipak Patel   +6 more
wiley   +1 more source

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