Results 261 to 270 of about 699,460 (405)

Influence of System Parameters on Nonlinear Dynamic Characteristics of the Herringbone Gear Transmission Under Different Coincidence Degrees

open access: yesJixie chuandong
The coincidence degree is an important parameter to reflect the number of meshing teeth of gear pairs at the same time. The appropriate coincidence degree of reasonable selection can improve transmission bearing capacity and ensure transmission stability,
Wang Ji   +3 more
doaj  

Solvothermal Template‐Induced Hierarchical Porosity in Covalent Organic Frameworks: A Pathway to Enhanced Diffusivity

open access: yesAdvanced Materials, EarlyView.
Hierarchically porous covalent organic frameworks (hCOFs) are constructed using a solvothermal template‐induced synthetic strategy. Commercially available zinc oxide nanoparticles are employed as hard template enabling an increase in total pore volume in a series of COFs.
Fabian Heck   +6 more
wiley   +1 more source

Spray‐Assisted Fabrication of Cellulose Photonic Pigments on Superhydrophobic Surfaces

open access: yesAdvanced Materials, EarlyView.
A method to directly produce structurally colored microparticles by drying cholesteric cellulose nanocrystal microdroplets on a superhydrophobic surface is reported. This approach has several key advantages that can unlock large‐scale fabrication of sustainable photonic pigments, including exploiting existing industrial techniques (e.g. aerosolization),
Jianing Song   +7 more
wiley   +1 more source

Multiple aneurysms with meningiomas: Coincidence or co-incidence?

open access: yesIndian Journal of Neurosurgery, 2013
Savitr Sastri   +2 more
doaj   +1 more source

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