Results 21 to 30 of about 571,301 (305)

Oxidation induced mechanisms during directed energy deposition additive manufactured titanium alloy builds

open access: yesAdditive Manufacturing Letters, 2021
To prevent oxygen contamination, additive manufacturing (AM) techniques normally operate in an inert gas chamber (GC). An alternative method, useful for large builds and components repair, is the application of localised shielding gas (LSG).
Caterina Iantaffi   +9 more
doaj   +1 more source

The Measurement of Neutron Contamination in High Energy X-Ray Radiotherapy Using a He-3 Gas Dosimeter [PDF]

open access: yesIranian Journal of Medical Physics
Introduction: Neutron contamination is likely caused by the collision of high-energy photon interactions (γ, ṉ) with heavy metals used in the construction of the accelerator.
Alireza Vejdani   +4 more
doaj   +1 more source

Evaluation of retrograde condensation damage and research on gas injection for enhanced recovery of condensate gas reservoirs in deep-buried hills [PDF]

open access: yesYouqicang pingjia yu kaifa
The BZ condensate gas reservoir in the Bohai Sea, China, is a rare fractured buried hill condensate gas reservoir with high saturation and high content of condensate oil.
JIANG Yong, LUO Xianbo, ZHANG Qixuan, WU Jintao, YANG Chenxu
doaj   +3 more sources

Metallic Hydrides I: Hydrogen Storage and Other Gas-Phase Applications [PDF]

open access: yes, 2002
A brief survey is given of the various classes of metal alloys and compounds that are suitable for hydrogen-storage and energy-conversion applications.
Bowman, Robert C., Jr., Fultz, Brent
core   +1 more source

Advanced Head Disk Interface System Assisted by Gas PFPE Lubrication

open access: yesTribology Online, 2011
An advanced head disk interface (HDI) system assisted by gas perfluoropolyether (PFPE) lubrication is discussed in this paper. It is known that lubricant spins off at a high rotation speed and high temperature.
Hiroyuki Matsumoto, Hiroshi Tani
doaj   +1 more source

Luminescence quenching of the triplet excimer state by air traces in gaseous argon [PDF]

open access: yes, 2007
While developing a liquid argon detector for dark matter searches we investigate the influence of air contamination on the VUV scintillation yield in gaseous argon at atmospheric pressure. We determine with a radioactive alpha-source the photon yield for
A Büchler   +14 more
core   +1 more source

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

open access: yesMolecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung   +17 more
wiley   +1 more source

Brazing retort manifold design concept may minimize air contamination and enhance uniform gas flow [PDF]

open access: yes, 1966
Brazing retort manifold minimizes air contamination, prevents gas entrapment during purging, and provides uniform gas flow into the retort bell. The manifold is easily cleaned and turbulence within the bell is minimized because all manifold construction ...
Ruppe, E. P.
core   +1 more source

Systemic dysregulation of apolipoproteins in amyotrophic lateral sclerosis serum

open access: yesFEBS Open Bio, EarlyView.
Amyotrophic lateral sclerosis (ALS) is a fatal disease that damages motor neurons. This study found that people with ALS show significant changes in blood fats and the proteins that carry them. Several apolipoproteins were higher, lipid balances were altered, and normal protein–lipid relationships were disrupted.
Finula I. Isik   +6 more
wiley   +1 more source

Using radon-222 in soil gas as an indicator of subsurface contamination by non-aqueous phase-liquids (NAPLs) [PDF]

open access: yesGeofísica Internacional, 2002
The dependence of the soil gas radon concentration on ground contamination by non-aqueous phase-liquids (NAPLs) was studied. Subsurface NAPL contamination is known as one of the major problems concerning the clean-up of polluted industrial sites.
H. Weiss   +3 more
doaj  

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