Electrical Conductivity of Aqueous NaCl at High Pressure and Low Temperature: Application to Deep Subsurface Oceans of Icy Moons

2021 ◽  
Author(s):  
Yilong Pan ◽  
Wenjun Yong ◽  
Richard A. Secco
Keyword(s):  
Electrical Conductivity ◽  
High Pressure ◽  
Low Temperature ◽  
Deep Subsurface ◽  
Icy Moons ◽  
Temperature Application

High pressure–low temperature apparatus for electrical conductivity measurements

1975 ◽  
Vol 46 (8) ◽  
pp. 1025-1027 ◽  
Author(s):  
R. E. Jones ◽  
G. C. Anderson ◽  
W. J. Keeler
Keyword(s):  
Electrical Conductivity ◽  
High Pressure ◽  
Low Temperature ◽  
Conductivity Measurements

High pressure treatment of liquid whole egg and advantages of low temperature application

2000 ◽  
Vol 19 (1-6) ◽  
pp. 131-136 ◽  
Author(s):  
D. U. Lee ◽  
O. Schlüter ◽  
V. Heinz ◽  
D. Knorr
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Pressure Treatment ◽  
High Pressure Treatment ◽  
Temperature Application ◽  
Liquid Whole Egg ◽  
Whole Egg

Interaction of Oxidizing and Reductive Components in CO2 Streams with Transport Pipeline Steel X70 at High Pressure and Low Temperature

2019 ◽  
Author(s):  
Andreas Kratzig ◽  
Dirk Bettge ◽  
Hoa Le Quynh ◽  
Ralph Bäßler ◽  
Axel Kranzmann
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Pipeline Steel

Low-Temperature Hydrogenation of Mg-Ni-Nb2O5 Alloy Processed by High-Pressure Torsion

2021 ◽  
pp. 160309
Author(s):  
M. Osorio-García ◽  
K. Suárez-Alcántara ◽  
Y. Todaka ◽  
A. Tejeda-Ochoa ◽  
M. Herrera Ramírez ◽  
...  
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
High Pressure Torsion

scholarly journals Pressure-Induced Structural Phase Transition and Metallization in Ga2Se3 up to 40.2 GPa under Non-Hydrostatic and Hydrostatic Environments

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 746
Author(s):  
Meiling Hong ◽  
Lidong Dai ◽  
Haiying Hu ◽  
Xinyu Zhang
Keyword(s):  
Phase Transition ◽  
Electrical Conductivity ◽  
High Pressure ◽  
Phase Transformation ◽  
Transport Properties ◽  
Electrical Transport ◽  
Structural Phase ◽  
Structure Evolution ◽  
Systematic Research ◽  
Electrical Transport Properties

A series of investigations on the structural, vibrational, and electrical transport characterizations for Ga2Se3 were conducted up to 40.2 GPa under different hydrostatic environments by virtue of Raman scattering, electrical conductivity, high-resolution transmission electron microscopy, and atomic force microscopy. Upon compression, Ga2Se3 underwent a phase transformation from the zinc-blende to NaCl-type structure at 10.6 GPa under non-hydrostatic conditions, which was manifested by the disappearance of an A mode and the noticeable discontinuities in the pressure-dependent Raman full width at half maximum (FWHMs) and electrical conductivity. Further increasing the pressure to 18.8 GPa, the semiconductor-to-metal phase transition occurred in Ga2Se3, which was evidenced by the high-pressure variable-temperature electrical conductivity measurements. However, the higher structural transition pressure point of 13.2 GPa was detected for Ga2Se3 under hydrostatic conditions, which was possibly related to the protective influence of the pressure medium. Upon decompression, the phase transformation and metallization were found to be reversible but existed in the large pressure hysteresis effect under different hydrostatic environments. Systematic research on the high-pressure structural and electrical transport properties for Ga2Se3 would be helpful to further explore the crystal structure evolution and electrical transport properties for other A2B3-type compounds.

Study of high-pressure air jet controlled compression ignition with compound thermodynamic cycle for combustion and emission formation process

2020 ◽  
pp. 146808742096933
Author(s):  
Xiangyu Meng ◽  
Sicheng Liu ◽  
Jingchen Cui ◽  
Jiangping Tian ◽  
Wuqiang Long ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Low Temperature ◽  
Formation Process ◽  
Combustion Process ◽  
Thermodynamic Cycle ◽  
Compression Ignition ◽  
Temperature Reaction ◽  
Air Jet ◽  
High Temperature Reaction

A novel method called high-pressure air (HPA) jet controlled compression ignition (JCCI) based on the compound thermodynamic cycle was investigated in this work. The combustion process of premixed mixture can be controlled flexibly by the high-pressure air jet compression, and it characterizes the intensified low-temperature reaction and two-stage high-temperature reaction. The three-dimensional (3D) computational fluid dynamics (CFD) numerical simulation was employed to study the emission formation process and mechanism, and the effects of high-pressure air jet temperature and duration on emissions were also investigated. The simulation results showed that the NOx formation is mainly affected by the first-stage high-temperature reaction due to the higher reaction temperature. Overall, this combustion mode can obtain ultra-low NOx emission. The second-stage high-temperature reaction plays an important role in the CO and THC formation caused by the mixing effect of the high-pressure air and original in-cylinder mixture. The increasing air jet temperature leads to a larger high-temperature in-cylinder region and more fuel in the first-stage reaction, and therefore resulting in higher NOx emission. However, the increasing air jet temperature can significantly reduce the CO and THC emissions. For the air jet duration comparisons, both too short and too long air jet durations could induce higher NOx emission. A higher air jet duration would result in higher CO emission due to the more high-pressure air jet with relatively low temperature.

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