Results 71 to 80 of about 5,042,325 (288)

Thermal structure and dynamics of the Martian upper atmosphere at solar minimum from global circulation model simulations [PDF]

open access: yesAnnales Geophysicae, 2007
Simulations of the Martian upper atmosphere have been produced from a self-consistent three-dimensional numerical model of the Martian thermosphere and ionosphere, called MarTIM.
T. Moffat-Griffin   +3 more
doaj   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt   +5 more
wiley   +1 more source

Collegian UIU student newspaper 2013-2022

open access: yes, 2022
Collegian published through Tumblr website.Copied from Tumblr and combined into single document.[Title], Upper Iowa University Digital Archives, [Reference URL].
Upper Iowa University
core   +1 more source

Course on structure and dynamics of the upper atmosphere

open access: yesEos, Transactions American Geophysical Union, 1971
The International School of Atmospheric Physics, in Erice, Trapani, Sicily, is offering its second international course June 13–27, 1971. The subject of the course is ‘Structure and Dynamics of the Upper Atmosphere.’The School is devoted to physicists who are working in the general field of atmospheric and ionospheric physics and who wish to gain ...
openaire   +1 more source

Sculpture education program / Upper Iowa Univesity

open access: yes, 1998
[Title], Upper Iowa University Digital Archives, [Reference URL].
Upper Iowa University
core   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

open access: yesAdvanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali   +5 more
wiley   +1 more source

Instrument concept of the imaging Fourier transform spectrometer GLORIA [PDF]

open access: yesAtmospheric Measurement Techniques, 2014
The Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) is an imaging limb emission sounder operating in the thermal infrared region.
F. Friedl-Vallon   +34 more
doaj   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

open access: yesAdvanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees   +6 more
wiley   +1 more source

Bilayered Martian Polar CO2 Snow Generation

open access: yesThe Planetary Science Journal
The exchange of CO _2 between the atmosphere and the polar ice caps is a fundamental process on Mars, for both present-day and past climates, affecting the dynamics of the atmosphere and other surface–atmosphere interactions across the globe.
Anthony D. Toigo   +3 more
doaj   +1 more source

First three dimensional wave characteristics in the daytime upper atmosphere derived from ground‐based multiwavelength oxygen dayglow emission measurements

open access: yesGeophysical Research Letters, 2016
First results on the three‐dimensional wave characteristics in the daytime upper atmosphere have been derived using measurements of oxygen dayglow emissions at 557.7, 630.0, and 777.4 nm that originate at around 130, 230, and 300 km (peak of the F region)
Duggirala Pallamraju   +2 more
doaj   +1 more source

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