Results 101 to 110 of about 485,159 (282)

Hydrogen cyanide in the upper troposphere: GEM-AQ simulation and comparison with ACE-FTS observations [PDF]

open access: yesAtmospheric Chemistry and Physics, 2009
We investigate the spatial and temporal distribution of hydrogen cyanide (HCN) in the upper troposphere through numerical simulations and comparison with observations from a space-based instrument.
A. Lupu   +10 more
doaj  

Theories of inter-hemispheric interactions in aphasia: the role of tDCS in rehabilitation of post-stroke aphasia

open access: yesFrontiers in Psychology, 2014
Mounting data from behavioral and neuroimaging studies have shown that the process of recovery from aphasia is largely driven by the reorganization of brain networks related to language.
Roy H Hamilton
doaj   +1 more source

Solar Polar Fields During Cycles 21 --- 23: Correlation with Meridional Flows

open access: yes, 2010
We have examined polar magnetic fields for the last three solar cycles, {$\it{viz.}$}, cycles 21, 22 and 23 using NSO Kitt Peak synoptic magnetograms. In addition, we have used SoHO/MDI magnetograms to derive the polar fields during cycle 23.
A.C. Layden   +31 more
core   +1 more source

Single‐Crystalline Lateral p‐SnS/n‐SnSe van der Waals Heterostructures by Vapor Transport Growth with In Situ Bi Doping

open access: yesAdvanced Functional Materials, EarlyView.
In‐situ doping during growth of SnSe and subsequent attachment of SnS produces high‐quality lateral pn‐heterojunctions between van der Waals semiconductors. Electron beam induced current measurements demonstrate electrically active pn‐junctions, paving the way for devices that harness charge separation at lateral interfaces in layered heterostructures.
Peter Sutter   +4 more
wiley   +1 more source

Globally- and hemispherically-integrated Joule heating rates during the 17 March 2015 geomagnetic storm, according to physics-based and empirical models [PDF]

open access: yesAnnales Geophysicae
Joule heating is a primary energy dissipation mechanism of the solar wind in the Earth's upper atmosphere. However there are large discrepancies in the computation of Joule heating between models.
S. Tourgaidis   +5 more
doaj   +1 more source

Switchable Supramolecular Adhesive by Tuning Interfacial Bonding and Modulus

open access: yesAdvanced Functional Materials, EarlyView.
The supramolecular adhesive (HyDiP) shows reversible adhesion and recyclability. In the dehydrated state, it is dense, stiff (E ≈445 MPa), transparent, and provides strong bonding with adhesion strengths up to 4.65 MPa. In the hydrated state, it becomes porous, soft (E ≈0.11 MPa), and detaches easily, enabling sustainable high‐strength applications ...
Rumin Fu   +10 more
wiley   +1 more source

Ionospheric propagation correction modeling for satellite altimeters [PDF]

open access: yes
The theoretical basis and avaliable accuracy verifications were reviewed and compared for ionospheric correction procedures based on a global ionsopheric model driven by solar flux, and a technique in which measured electron content (using Faraday ...
Nesterczuk, G.
core   +1 more source

Gourd‐Inspired Design of Unit Cell with Multiple Gradients for Physiological‐Range Pressure Sensing

open access: yesAdvanced Functional Materials, EarlyView.
Gourd‐shaped micro‐dome arrays with coordinated modulus, conductivity, and geometric gradients co‐optimize sensitivity and linearity in piezoresistive tactile sensors. Under pressure, a solid upper dome embeds into a porous lower dome, triggering rapid contact‐area growth and series‐to‐parallel conduction, enabling unsaturated, intensity‐resolved ...
Jiayi Xu   +6 more
wiley   +1 more source

Modeling the Reasons for Seasonal Change [PDF]

open access: yes, 2003
The purpose of this resource is to understand what causes the Earth's seasons with a focus on the Earth's tilt and spherical shape. Students learn how sunlight spreads over the Earth at different times of the year, emphasizing the solstices and the ...
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core  

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

open access: yesAdvanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy