Results 61 to 70 of about 2,055,953 (299)

Improved mixing height monitoring through a combination of lidar and radon measurements [PDF]

open access: yesAtmospheric Measurement Techniques, 2013
Surface-based radon (<sup>222</sup>Rn) measurements can be combined with lidar backscatter to obtain a higher quality time series of mixing height within the planetary boundary layer (PBL) than is possible from lidar alone, and a more ...
A. D. Griffiths   +4 more
doaj   +1 more source

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

open access: yesAdvanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon   +4 more
wiley   +1 more source

Designing a Fully‐Tunable and Versatile TKE‐l Turbulence Parameterization for the Simulation of Stable Boundary Layers

open access: yesJournal of Advances in Modeling Earth Systems
This study presents the development of a so‐called Turbulent Kinetic Energy (TKE)‐l, or TKE‐l, parameterization of the diffusion coefficients for the representation of turbulent diffusion in neutral and stable conditions in large‐scale atmospheric models.
É. Vignon   +14 more
doaj   +1 more source

Convectively coupled equatorial waves: A new methodology for identifying wave structures in observational data [PDF]

open access: yes, 2002
Convectively coupled equatorial waves are fundamental components of the interaction between the physics and dynamics of the tropical atmosphere. A new methodology, which isolates individual equatorial wave modes, has been developed and applied to ...
Jin, F.-F.   +88 more
core   +2 more sources

Embedded Direct Ink Writing of Thermoset and Elastomeric Polymers via Frontal Polymerization

open access: yesAdvanced Functional Materials, EarlyView.
Embedded frontal polymerization direct ink writing (FP‐DIW) combines frontal ring‐opening metathesis polymerization with embedded 3D printing to decouple deposition from curing. A yield‐stress support bath stabilizes low‐viscosity inks, while on‐demand thermal initiation enables controlled front propagation. This approach expands the accessible feature
Mohammad Tanver Hossain   +12 more
wiley   +1 more source

Measurements in an urban-type boundary layer. [PDF]

open access: yes, 2008
Wind tunnel measurements of the boundary layer flow over a very rough surface comprising a staggered array of cubes are presented and discussed. Attention is concentrated on the near-wall region, including the canopy region below the tops of the ...
Ian P. Castro   +3 more
core   +1 more source

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

open access: yesAdvanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali   +16 more
wiley   +1 more source

Receptivity and transition to turbulence of supersonic boundary layers with surface roughness

open access: yes, 2013
A deeper understanding of the different factors that influence the laminar-turbulent transition in supersonic boundary layers will help the design of efficient high-speed vehicles.
De Tullio, Nicola
core   +1 more source

Modeling Titan’s Planetary Boundary Layer at the Huygens Landing Site: Evidence for the Role of Subsurface Methane Evaporation in Limiting Convective Growth

open access: yesThe Planetary Science Journal
The planetary boundary layer (PBL) is the region of the atmosphere directly impacted by surface processes and is thus potentially diagnostic of poorly constrained, unresolvable or unobserved surface properties.
Victoria L. Hartwick   +2 more
doaj   +1 more source

A new methodology for PBL height estimations based on lidar depolarization measurements: analysis and comparison against MWR and WRF model-based results [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
The automatic and non-supervised detection of the planetary boundary layer height (zPBL) by means of lidar measurements was widely investigated during the last several years.
J. A. Bravo-Aranda   +16 more
doaj   +1 more source

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