Results 51 to 60 of about 500,833 (298)

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

open access: yesAdvanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler   +9 more
wiley   +1 more source

Nanostructure composite film for sensor controls of humidity

open access: yesТехнологія та конструювання в електронній апаратурі, 2009
Received nanostructure of the composite film allows creating integrated sensor controls of humidity with high sensitivity, stable in time, with linear dependence of capacity from relative humidity practically in all range of its change (3 to 100%) and ...
K. L. Kovalenko   +2 more
doaj  

Pyramidal Structures on Yttria‐Stabilized Zirconia after High Temperature Exposure at 1500°C: New Features on an Old Material

open access: yesAdvanced Engineering Materials, EarlyView.
New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold   +2 more
wiley   +1 more source

A comparative study of single-particle cryo-EM with liquid-nitrogen and liquid-helium cooling

open access: yesIUCrJ, 2019
Radiation damage is the most fundamental limitation for achieving high resolution in electron cryo-microscopy (cryo-EM) of biological samples. The effects of radiation damage are reduced by liquid-helium cooling, although the use of liquid helium is more
Olivia Pfeil-Gardiner   +3 more
doaj   +1 more source

Multicomponent radiatively driven stellar winds IV. On the helium decoupling in the wind of sigma Ori E

open access: yes, 2006
We study the possibility of the helium decoupling in the stellar wind of sigma Ori E. To obtain reliable wind parameters for this star we first calculate an NLTE wind model and derive wind mass-loss rate and terminal velocity.
Groote, Detlef   +2 more
core   +1 more source

Impact of Pre‐Oxidation Treatments on a Recycled MgO/Steel‐Composite as Carbon Free Anode in Aluminum‐Electrolysis Environments

open access: yesAdvanced Engineering Materials, EarlyView.
Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser   +4 more
wiley   +1 more source

High-efficiency cathode elements for gas-discharge light sources

open access: yesТехнологія та конструювання в електронній апаратурі, 2009
The use of cathode elements of an arc discharge activator made from a newly developed material — an alloy of iridium with rare-earth metals of the cerium group — has been proposed. Working samples of arc lamps have been manufactured and tested.
V. V. Sevastyanov, V. V. Shutovsky
doaj  

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

open access: yesAdvanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal   +10 more
wiley   +1 more source

Hybrid integrated circuits for sound signal processing

open access: yesТехнологія та конструювання в електронній апаратурі, 2011
Developed hybrid integrated circuit with rated supply voltage of 1,4 V, current consumption 0,7 mA and overall dimensions 8×4×3 mm provides soft processing of the audio signal in analog microelectronic equipment.
V. A. Koval’chuk, V. V. Sevast’yanov
doaj  

Sequestration of noble gases in giant planet interiors

open access: yes, 2010
The Galileo probe showed that Jupiter's atmosphere is severely depleted in neon compared to protosolar values. We show, via ab initio simulations of the partitioning of neon between hydrogen and helium phases, that the observed depletion can be explained
Burkhard Militzer   +2 more
core   +1 more source

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