Results 31 to 40 of about 248,941 (304)

Study of particle solidification growth evolution during slush hydrogen freeze-thaw process based on Phase Field-Lattice Boltzmann method

open access: yesResults in Physics
The remarkable performance exhibited by slush hydrogen makes it a promising choice for cryogenic propellants. The freeze–thaw method is the most commonly used method producing slush hydrogen due to its simplicity and reliability.
Fushou Xie   +4 more
doaj   +1 more source

Optical gyro pickoff operates at cryogenic temperatures [PDF]

open access: yes, 1966
Two-axis pickoff for cryogenic gyros uses solid-state light sources and sensors.

core   +1 more source

Residual Stresses Induced by Dry and Cryogenic Cooling during Machining of AZ31B Magnesium Alloy [PDF]

open access: yes, 2014
The major challenge of the Mg alloys has been their unsatisfactory corrosion resistance, which can be enhanced by improving the surface integrity. Cryogenic machining, where liquid nitrogen was used during machining, has been reported to improve the ...
BATISTA, Antonio   +2 more
core   +4 more sources

Longitudinal Assessment of Biomarkers in ALS: Discriminative Biomarkers for Disease Progression and Survival

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To assess the association and discriminative performance of serum biomarkers with clinical disease progression and survival in patients with amyotrophic lateral sclerosis (ALS). Methods This retrospective study, conducted at Houston Methodist Hospital, Houston, TX, used longitudinal serum samples collected between January 2018 and ...
David R. Beers   +7 more
wiley   +1 more source

Concept for cryogenic liquid reclamation system [PDF]

open access: yes, 1967
Cryogenic liquid reclamation system is used as an add-on unit to the nitrogen system of environmental test laboratories to salvage liquid nitrogen presently being treated as waste.
Daderian, S. M.
core   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

open access: yesAdvanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Engineered ice-binding protein (FfIBP) shows increased stability and resistance to thermal and chemical denaturation compared to the wildtype

open access: yesScientific Reports
Many polar organisms produce antifreeze proteins (AFPs) and ice-binding proteins (IBPs) to protect themselves from ice formation. As IBPs protect cells and organisms, the potential of IBPs as natural or biological cryoprotective agents (CPAs) for the ...
Yewon Nam   +5 more
doaj   +1 more source

Testing and characterizations of infrared sensor over the temperature range of 2 Kelvin to 300 Kelvin [PDF]

open access: yes, 1983
Various cryogenic techniques were used to evaluate state of the art electro-optic devices. As research, development, and production demands require more sensitive testing techniques, faster test results, and higher production throughput, the emphasis on ...
Hansen, R. G.
core   +1 more source

Elinvar Materials: Recent Progress and Challenges

open access: yesAdvanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

Comparison of mean-line methods for hydrogen turbo-expanders in hydrogen liquefiers

open access: yesCase Studies in Thermal Engineering
The energy consumption of a large-scale industrial hydrogen liquefaction system is primarily determined by the hydrogen turbo-expanders. To estimate the performance of the expander quickly, a one-dimensional preliminary design is conducted.
Kaimiao Zhou   +6 more
doaj   +1 more source

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