Results 71 to 80 of about 858,402 (225)
Cellulose Surface Modification Effects on Equilibrium and Non‐Equilibrium Wetting by Water
Advanced Materials Interfaces, EarlyView.Molecular dynamics simulations of nanometer‐sized water droplets spreading on cellulose substrates show strong effects from surface chemistry on both equilibrium contact angles and spreading dynamics. ABSTRACT Chemical modification is an important route to tuning interactions between nanocellulose and its surrounding media. Specifically, it affects the
Jakob Wohlert, Lars Berglund
wiley +1 more source
Climatology of GPS ionospheric scintillations over high and mid-latitude European regions [PDF]
Annales Geophysicae, 2009 We analyze data of ionospheric scintillation in the geographic latitudinal range 44°–88° N during the period of October, November and December 2003 as a first step to develop a "scintillation climatology" over Northern Europe.
L. Spogli +6 more
doaj +1 more source
Impact of Storm-Enhanced Density (SED) on Ion Upflow Fluxes During Geomagnetic Storm
Frontiers in Astronomy and Space Sciences, 2021 The impact of the dynamic evolution of the Storm-Enhanced Density (SED) on the upward ion fluxes during the March 06, 2016 geomagnetic storm is studied using comprehensive multi-scale datasets.
Shasha Zou +4 more
doaj +1 more source
Polar patches - outstanding issues
, 1998 Historically, the term polar patch was used to describe isolated regions of enhanced 630 nm emission observed in the polar cap. In recent years, signatures from other instruments, such as riometer, ionosonde and HF backscatter radar, have been used to ...
Rodger, A. S., A. S. Rodger
core +1 more source
Recent Advances in Polar Cap Density Structure Research
, 2021 In the polar cap region, high-density ionospheric structures, such as the large-scale tongue-of-ionization and mesoscale polar cap patches, are frequently observed, which are of significant space weather concerns.
John C. Foster +5 more
core +1 more source
3D‐Printing Aided Rapid Prototyping of Pretensioned Tensegrity Structures for Robotic Applications
Advanced Robotics Research, EarlyView.Printing, injection molding, and assembly (PMA) is a method for rapid prototyping mesoscale, topologically complex, and tensioned tensegrity structures. In combination with PMA method, two mold design strategies: modular mold and compact channel layout, enable efficiency and scalability for tensegrity fabrication.
Yi Sun +3 more
wiley +1 more source
Tracking of polar cap ionospheric patches using data assimilation [PDF]
Journal of Geophysical Research: Space Physics, 2007 Ionospheric F‐region patches are 2–10 larger than background electron densities in the polar ionosphere. The EISCAT Svalbard incoherent radar (ESR) observed a sequence of patches between 2000–2200 UT on 12 December 2001. In this paper the source of these structures is investigated using several other data sets, together with a convection‐driven ...
G. S. Bust, G. Crowley
openaire +1 more source
Advanced Science, EarlyView.This study combines full‐field tomography with diffraction mapping to quantify radial (ε002$\varepsilon _{002}$) and axial (ε100$\varepsilon _{100}$) lattice strain in wrinkled carbon‐fiber specimens for the first time. Radial microstrain gradients (−14.5 µεMPa$\varepsilon \mathrm{MPa}$−1) are found to signal damage‐prone zones ahead of failure, which ...
Hoang Minh Luong +7 more
wiley +1 more source
Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 [PDF]
Annales Geophysicae, 2015 Global positioning system scintillation and total electron content (TEC) data have been collected by ten specialized GPS Ionospheric Scintillation and TEC Monitors (GISTMs) of the Canadian High Arctic Ionospheric Network (CHAIN).
P. Prikryl +4 more
doaj +1 more source
Advanced Science, EarlyView.A portable, sensorized, and controlled dexterous thumb‐enhanced glove helps stroke survivors swipe phones, twist caps, and perform other tasks. It is based on a powerful continuously, segmented origami dual chamber actuator to achieve active thumb CMC and MCP joint assistance and passively extend the IP joint.
Disheng Xie +10 more
wiley +1 more source