Enthalpy of Vaporization Measurements of Liquid Methane, Ethane, and Methane + Ethane by Differential Scanning Calorimetry at Low Temperatures and High Pressures

2017 ◽  
Vol 62 (8) ◽  
pp. 2253-2260 ◽  
Author(s):  
Tauqir H. Syed ◽  
Thomas J. Hughes ◽  
Eric F. May
Keyword(s):  
Differential Scanning Calorimetry ◽  
Low Temperatures ◽  
High Pressures ◽  
Enthalpy Of Vaporization ◽  
Scanning Calorimetry ◽  
Liquid Methane

The Crystal Structures at 10 K of the Trigonal Salts KMIII(NH3)6(ClO4)2Cl2, MIII = Os and Cr, and the Possibility of Phase Transitions

1999 ◽  
Vol 52 (3) ◽  
pp. 219 ◽  
Author(s):  
Philip A. Reynolds ◽  
Brian N. Figgis ◽  
Alexander N. Sobolev
Keyword(s):  
Differential Scanning Calorimetry ◽  
Transition Temperature ◽  
Crystal Structures ◽  
Low Temperatures ◽  
Simple Structure ◽  
Alkali Metal Cations ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Threefold Axis ◽  
X Ray

The crystal structures of KOs(NH3)3(ClO4)2Cl2 and KCr(NH3)6(ClO4)2Cl2 were determined at 10 K by X-ray diffraction, and for the osmium salt also at 293 K. At 293 K the osmium salt is trigonal, space group R 3m, with the same simple structure as others of this class of double salt. At 10 K, in agreement with previous radius ratio predictions, both crystals are best described as remaining R 3m. All previously studied members, with larger alkali metal cations, are twinned R 3 at low temperatures, with small, symmetry-breaking rotations of the hexaamminemetal(III) and perchlorate ions about the threefold axis. Differential scanning calorimetry on CsRu(NH3)6(ClO4)2Cl2 suggests that the R 3m to R 3 change is very extended in temperature with only a small discontinuity at the transition temperature.

Differential scanning calorimetry applied to the storage at ultra low temperatures of olive and hop in vitro grown shoot-tips

2000 ◽  
Vol 349 (1-2) ◽  
pp. 147-151 ◽  
Author(s):  
David Martı́nez ◽  
M Ángeles Revilla ◽  
Aránzazu Espina ◽  
José R Garcı́a
Keyword(s):  
Differential Scanning Calorimetry ◽  
Low Temperatures ◽  
Shoot Tips ◽  
Scanning Calorimetry
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