scholarly journals Editorial for the Special Issue “Properties of Melt and Minerals at High Pressures and High Temperature”

Minerals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 723
Author(s):  
Claudia Romano
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
High Pressures ◽  
Silicate Melts ◽  
Special Issue ◽  
Special Volume ◽  
High Temperature Properties ◽  
Developing Area

This Special Volume sets out to summarize knowledge in the rapidly developing area of the high-pressure and high-temperature properties and structure of silicate melts and minerals [...]

Antioxidant Activity of Enzymatic Hydrolysates of High-Temperature Soybean Meal Pretreated with High Pressures

2015 ◽  
Vol 1092-1093 ◽  
pp. 1519-1524 ◽  
Author(s):  
Jing Xu ◽  
Yu Ting Wang ◽  
Xiao Yu Wang ◽  
Xin Ru Li ◽  
Qian Xin Dang
Keyword(s):  
Antioxidant Activity ◽  
High Pressure ◽  
Superoxide Dismutase ◽  
High Temperature ◽  
Glutathione Peroxidase ◽  
Molecular Mass ◽  
Soybean Meal ◽  
High Pressures ◽  
Relative Molecular Mass ◽  
Mda Content

Effect of high-temperature soybean meal hydrolysates was to be studied in this paper. Hhigh-temperature soybean meal was treated by high pressure. And Alcalase 2.4 L was used to hydrolyze high-temperature soybean meal, three kinds of solutions with relative molecular mass of > 10 000 Da, 5000 Da – 10 000 Da and < 5 000 Da were obtained by ultrafiltration of hydrolysates, and they were administrated mice by gastric perfusion, respectively. Levels of superoxide dismutase (SOD), glutathione peroxidase (GSH-PX) and malondialdehyde (MDA) in liver were separately tested with reagent kits. Results showed that SOD and GSH-PX activities were significantly improved and MDA content was reduced in liver of mice by hydrolysates, which indicated that high-temperature soybean meal hydrolysates can improve antioxidant indexes of mice and enhance antioxidation capacity of body.

Advances in Computation of Temperature-Pressure Phase Diagrams of High-Pressure Nitrides

2008 ◽  
Vol 403 ◽  
pp. 77-80 ◽  
Author(s):  
Peter Kroll
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Elevated Temperature ◽  
Total Energy ◽  
Phase Diagrams ◽  
High Pressures ◽  
First Principle ◽  
Energy Calculations ◽  
High Pressure High Temperature ◽  
Pressure Phase

A combination of first-principle and thermochemical calculations is applied to compute the phase diagrams of rhenium-nitrogen and of ruthenium-nitrogen at elevated temperature and high pressure. We augment total energy calculations with our approach to treat the nitrogen fugacity at high pressures. We predict a sequential nitridation of Re at high-pressure/high-temperature conditions. At 3000 K, ReN will form from Re and nitrogen at about 32 GPa. A ReN2 with CoSb2-type structure may be achieved at pressures exceeding 50 GPa at this temperature. Marcasite-type RuN2 will be attainable at 3000 K at pressures above 30 GPa by reacting Ru with nitrogen.

Pyrite form of group-14 element pernitrides synthesized at high pressure and high temperature

2017 ◽  
Vol 46 (30) ◽  
pp. 9750-9754 ◽  
Author(s):  
K. Niwa ◽  
H. Ogasawara ◽  
M. Hasegawa
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
High Temperatures ◽  
High Pressures ◽  
Group 14

The incompressible pyrite form of group 14 elemental pernitrides synthesized at high pressures and high temperatures.

A Study for N2 Coherent Anti-Stokes Raman Spectroscopy Thermometry at High Pressure

1983 ◽  
Vol 37 (6) ◽  
pp. 508-512 ◽  
Author(s):  
Haruhiko Kataoka ◽  
Shiro Maeda ◽  
Chiaki Hirose ◽  
Koichi Kajiyama
Keyword(s):  
Raman Spectroscopy ◽  
High Pressure ◽  
High Temperature ◽  
Pressure Range ◽  
High Pressures ◽  
Band Width ◽  
Maximum Height ◽  
Temperature Determination ◽  
Engine Cylinder ◽  
Anti Stokes

N2 coherent anti-Stokes Raman spectroscopy (CARS) thermometry over a pressure range 1 to 50 atm has been studied. The CARS profile at high pressure and high temperature was recorded by using the ignition inside a running engine cylinder. The observed Q-branch profile was theoretically fitted by incorporating the collisional narrowing effect, serving for the temperature determination at various pressures. Because of the narrowing effect, the apparent band width showed little change with pressure above 5 atm in general. It has been suggested that the band width at 1/5 of the maximum height can be a useful measure of temperature, while the usual half-width turns out to be hardly practicable at high pressures.

scholarly journals High-Temperature Properties of Steel Tubing for High Temperature and High-Pressure Service

1973 ◽  
Vol 22 (234) ◽  
pp. 272-277
Author(s):  
Teruo YUKITOSHI ◽  
Takashi ABE ◽  
Kazuhiko NISHIDA ◽  
Kunihiko YOSHIKAWA
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
High Temperature Properties ◽  
Steel Tubing

Structural stability of WS2 under high pressure

2014 ◽  
Vol 28 (25) ◽  
pp. 1450168 ◽  
Author(s):  
Nirup Bandaru ◽  
Ravhi S. Kumar ◽  
Jason Baker ◽  
Oliver Tschauner ◽  
Thomas Hartmann ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
High Temperature ◽  
Structural Changes ◽  
High Pressures ◽  
Structural Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diamond Anvil ◽  
Heating Up

Structural behavior of bulk WS 2 under high pressure was investigated using synchrotron X-ray diffraction and diamond anvil cell up to 52 GPa along with high temperature X-ray diffraction and high pressure Raman spectroscopy analysis. The high pressure results obtained from X-ray diffraction and Raman analysis did not show any pressure induced structural phase transformations up to 52 GPa. The high temperature results show that the WS 2 crystal structure is stable upon heating up to 600°C. Furthermore, the powder X-ray diffraction obtained on shock subjected WS 2 to high pressures up to 10 GPa also did not reveal any structural changes. Our results suggest that even though WS 2 is less compressible than the isostructural MoS 2, its crystal structure is stable under static and dynamic compressions up to the experimental limit.

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