Results 51 to 60 of about 497,436 (275)

Equivalence Ratio Effect on Helium Diluted Methane Jet Flame Temperature and Pollutant Emission for a Swirl Assisted Gas Turbine Burner

open access: yesHavacılık ve Uzay Teknolojileri Dergisi, 2023
Temperature distribution and flue gas emissions in gas turbine combustion chambers have attracted the attention of researchers in recent years.
Buğrahan Alabaş, Adem Altınay
doaj  

Method and apparatus for generating coherent radiation in the ultra-violet region and above by use of distributed feedback [PDF]

open access: yes, 1976
Helium in the superfluid state emits copious amounts of radiation in the ultraviolet region when excited by an electron stream. Conventional laser action using mirrors is impossible in superfluid helium because there are no mirrors that will reflect VUV ...
Saffren, M. M.
core   +1 more source

Helium line detections from ELDWIM at 1.4 GHz

open access: yes, 2011
Helium line observations towards 11 Galactic positions using Westerbork Synthesis Radio Telescope(WSRT) have been reported. These observations were made towards nearby positions where already hydrogen lines were detected at sufficiently high intensity ...
Anderson   +13 more
core   +1 more source

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

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  

Thermodynamic Analysis of the Second Fluid Brayton Cycle for Scramjet Engine

open access: yesEnergies
The burning chamber wall of the ramjet engine is facing an extremely thermal environment during normal conditions. Thermal protection measures must be taken on the wall surface of the combustion chamber.
Jiamao Luo   +5 more
doaj   +1 more source

Effects of a New Triple-alpha Reaction on X-ray Bursts of a Helium Accreting Neutron Star

open access: yes, 2012
The effects of a new triple-$\alpha$ reaction rate (OKK rate) on the helium flash of a helium accreting neutron star in a binary system have been investigated.
Fynbo   +7 more
core   +1 more source

Unraveling the Effect of Tramp Elements on Phase Transformations in Steels by Combining CALPHAD Modeling and Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates how tramp elements from increased scrap usage influence phase transformations in low‐alloyed steel. Combining dilatometry and microscopy reveal that tramp elements delay transformations, reduce critical cooling rates and increase hardenability.
Lukas Hatzenbichler   +5 more
wiley   +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

Obtaining effective cathodoluminescent structures based on film technology

open access: yesТехнологія та конструювання в електронній апаратурі, 2008
A technological route has been developed and process parameters have been selected for the serial production of thin-film cathodoluminescent structures used in high-resolution information display devices.
L. F. Kovalenko   +3 more
doaj  

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