SearchPublisher and Institutes
You are here: Home :: Keyword index :: par bis pre :: pharmacy - phenotypic plasticity 
Phase transitions
Items for "Phase transitions"
Structure, phase transitions and dielectric properties of a new inclusion compound of bis-thiourea pyridinium nitrate salt
A structure of a new inclusion compound of bis-thiourea pyridinium nitrate salt C5H6N+NO3- 2[CH4N2S] was determined by single-crystal X-ray diffraction method at 293 K, 250 K and 150 K...
Keywords: Inclusion compounds, Phase transitions, Bis-thiourea pyridinium nitrate salt, Single crystal structure analysis, X-ray diffraction
03/2006 | Zeitschrift für Kristallographie, Oldenbourg WissenschaftsverlagEffect of hydrostatic pressure up to 6 GPa on the crystal structures of ammonium and sodium hexafluorosilicates, (NH4)2SiF6 and Na2SiF6; a phase transition in (NH4)2SiF6
An in situ X-ray powder diffraction study has shown the cubic modification of (NH4)2SiF6 (cryptohalite, space group Fm¯3m) at 0.2–0.3 GPa to transform irreversibly into the trigonal bararite, space group P¯3m1...
Keywords: Phase transitions, High pressure, Lattice strain, Bararite, Cryptohalite
01/2007 | Zeitschrift für Kristallographie, Oldenbourg WissenschaftsverlagOrientation relations between four phases of AgI
Starting with wurtzite-type single crystals, AgI was investigated at room temperature and pressures up to 0.5 GPa by means of a polarizing light microscope and with the precession technique...
Keywords: High pressure, Silver iodide, Phase transitions, Orientation relations, Diamond anvil cell
02/2007 | Zeitschrift für Kristallographie, Oldenbourg WissenschaftsverlagA structural investigation of the four phases of 7-oxabicyclo[2.2.1]heptane
Powder synchrotron X-ray diffraction studies confirm that 7-oxabicyclo[2.2.1]heptane, (oxanorbornane), forms three solid phases on cooling and four on warming, as previously indicated by spectroscopic and DSC meas urements...
Keywords: Phase transitions, Low temperature, X-ray diffraction, Powder diffraction structure analysis, Oxanorbornane
09/2007 | Zeitschrift für Kristallographie, Oldenbourg WissenschaftsverlagOn reconstitutive phase transitions and the jump of the chemical potential
This article studies diffusion in solids in the case of two phases under isothermal conditions where due to plastic effects the number of vacancies changes when crossing a transition layer, i.e...
Keywords: Phase transitions, dynamics of phase boundary, initial value problems for parabolic equations
01/2008 | Analysis, Oldenbourg Wissenschaftsverlag