Results 11 to 20 of about 18,903,450 (313)

High pressure-induced structural effects in plastic packaging

open access: yes, 2022
S.555-566Today, flexible vacuum packages are predominantly used for products to be subjected to high pressure treatment. However, tray packages with a modified atmosphere are in demand, which provide a high failure rate with respect to gas and water ...
Richter, T.   +3 more
core   +1 more source

The near-room-temperature upsurge of electrical resistivity in Lu-H-N is not superconductivity, but a metal-to-poor-conductor transition

open access: yesMatter and Radiation at Extremes, 2023
The recent report of superconductivity in nitrogen-doped lutetium hydride (Lu-H-N) at 294 K and 1 GPa brought hope for long-sought-after ambient-condition superconductors.
Di Peng   +5 more
doaj   +1 more source

Experimental analysis of the pressure–velocity correlations of external unsteady flow over rocket launchers [PDF]

open access: yes, 2013
Based on simultaneous wall pressure and velocity measurements, the aerodynamic load of a launcher body model is investigated. Two different configurations are considered in order to study the influence of geometrical artifacts on the after body flow and ...
DRUAULT, Philippe   +7 more
core   +1 more source

Some Magnetic Properties and Magnetocaloric Effects in the High-Temperature Antiferromagnet YbCoC2

open access: yesMagnetochemistry, 2023
The YbCoC2 compound, which crystallizes in a base-centered orthorhombic unit cell in the Amm2 space group CeNiC2 structure, is unique among Yb-based compounds due to the highest magnetic ordering temperature of TN=27 K.
Denis Alexandrovich Salamatin   +7 more
doaj   +1 more source

Phase transition mechanism and bandgap engineering of Sb2S3 at gigapascal pressures

open access: yesCommunications Chemistry, 2021
Antimonite (Sb2S3) has potential applications for solar energy, but how its layered structure changes under pressure is incompletely understood. Here diamond anvil cell experiments supported by first principles calculations offer a structural explanation
Zhongxun Cui   +9 more
doaj   +1 more source

Pressure-induced phase transitions of KTiOAsO4 by Raman spectroscopy

open access: yes, 1998
Potassium titanyl orthoarsenate KTiOAsO4 has been studied by Raman spectroscopy up to 16 GPa. Three first-order pressure-induced phase transitions are inferred from Raman data. The first phase transition takes place at 3.
Zhou, F.   +4 more
core   +1 more source

High-pressure behavior and pressure-driven phase transitions in hydrated borates [PDF]

open access: yes, 2022
Hydrated borates (e.g., colemanite, ulexite, kernite and borax) are the most common ore minerals of boron, an important geochemical marker, in particular in pegmatitic and granitic systems, for petrogenetic processes and a strategic element in a series ...
Hanfland M, Gatta G. D., Comboni D.
core  

High pressure Raman study and phase transitions of KIO3 non-linear optical single crystals

open access: yes, 1998
Potassium iodate KIO3 single crystal samples have been studied under pressure up to 35 GPa at room temperature. Drastic spectral changes and phase transitions were observed. The first phase transition occurs at 5.
Zhou, F.   +4 more
core   +1 more source

Interseismic re-strengthening and stabilization of carbonate faults by "non-Dieterich" healing under hydrothermal conditions [PDF]

open access: yes, 2015
Friction experiments, consisting of a "velocity stepping" stage, a "slide-hold-slide" (SHS) stage and a second "velocity stepping" stage, have been performed to study the frictional healing behavior of carbonate fault gouge, and the effects of healing on
Chen, Jianye   +4 more
core   +2 more sources

Room-Temperature Synthesis of Tubular Hexagonal Boron Nitride under Pressure

open access: yesCrystals, 2023
Hexagonal boron nitride (h-BN) exhibits interesting optical and mechanical properties, including chemical and thermal stability. Extensive techniques have been applied for the realization of h-BN at high temperatures.
Junkai Li   +4 more
doaj   +1 more source

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