Results 231 to 240 of about 17,128 (260)
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Chemistry and Physics of Lipids, 1992
The systematic study of the mesomorphic phase properties of synthetic and biologically derived lipids began some 30 years ago. In the past decade, interest in this area has grown enormously. As a result, there exists a wealth of information on lipid phase behavior, but unfortunately these data have until now been scattered throughout the literature in ...
M, Caffrey, J, Hogan
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The systematic study of the mesomorphic phase properties of synthetic and biologically derived lipids began some 30 years ago. In the past decade, interest in this area has grown enormously. As a result, there exists a wealth of information on lipid phase behavior, but unfortunately these data have until now been scattered throughout the literature in ...
M, Caffrey, J, Hogan
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Reduction of Enthalpy of Fusion and Anomalies during Phase Transitions in Finely Divided Water
Physical Review Letters, 1998Solid-liquid phase transitions in finely divided water (FDW) obtained by the adsorption of vapor on large silica surface have been studied with differential scanning calorimetry (DSC). Large reduction of both freezing $\ensuremath{\Delta}{H}_{f}$ and melting $\ensuremath{\Delta}{H}_{m}$ enthalpies with decreasing the adsorbed weight has been observed ...
A. Bogdan, M. Kulmala, N. Avramenko
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Molecular Crystals and Liquid Crystals, 1984
Abstract Five N-(1-biphenylethylidene) benzylamines expressed by the general formula C6H5C6H4C(CH3) = N-CH2-C64HX (X = H, m-F, m-Cl, M-Br and p-OCH3) were synthesized and their thermal behavior studied within the temperature range of -75 to 250°C.
J. Palacios +2 more
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Abstract Five N-(1-biphenylethylidene) benzylamines expressed by the general formula C6H5C6H4C(CH3) = N-CH2-C64HX (X = H, m-F, m-Cl, M-Br and p-OCH3) were synthesized and their thermal behavior studied within the temperature range of -75 to 250°C.
J. Palacios +2 more
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Thermochimica Acta, 2020
Abstract During the last decades, salt hydrates have become increasingly popular in research on phase change materials (PCM) due to their generally higher phase transition enthalpies and lower costs compared to organic PCM. However, in most published reviews on phase transition enthalpies of salt hydrates, the data stems from earlier data collections
Henri Schmit +3 more
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Abstract During the last decades, salt hydrates have become increasingly popular in research on phase change materials (PCM) due to their generally higher phase transition enthalpies and lower costs compared to organic PCM. However, in most published reviews on phase transition enthalpies of salt hydrates, the data stems from earlier data collections
Henri Schmit +3 more
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Density of states, enthalpy of formation and occurrence of the sigma phase in transitional alloys
Philosophical Magazine, 1976Abstract We present a simple band model for the computation of the density of states and the enthalpy of formation for transitional alloys in the sigma phase. We apply this model for the computation of phase diagrams of ternary alloys between elements of the first transition row and we show that the good agreement obtained with experiment arises from ...
J. van der Rest, J. Giner
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Application of scanning methods to distinguish between entropy and enthalpy driven phase transitions
Current Opinion in Colloid & Interface Science, 2013Abstract All phase transitions can be divided into enthalpy and entropy driven. The driving forces of phase transitions in aqueous soft matter systems can be resolved by applying scanning methods. In this review three experimental methods — sorption calorimetry, differential scanning calorimetry and humidity scanning quartz crystal microbalance with ...
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The Journal of Physical Chemistry C, 2017
There is a significant effect of particle size on the solid–solid phase transition of nanocrystals, but the precise relations of integral enthalpy and entropy of phase transition with particle size have not been reported. In this paper, we deduced the fundamental equations of the integral enthalpy and entropy of solid–solid phase transitions for ...
Zixiang Cui +4 more
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There is a significant effect of particle size on the solid–solid phase transition of nanocrystals, but the precise relations of integral enthalpy and entropy of phase transition with particle size have not been reported. In this paper, we deduced the fundamental equations of the integral enthalpy and entropy of solid–solid phase transitions for ...
Zixiang Cui +4 more
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Biochimica et Biophysica Acta (BBA) - Biomembranes, 1988
The main phase transition of phospholipid bilayers is a property expressed by the order-disorder conformational change of the lipid tails. Nevertheless, with ionizable phospholipids, changes in the surface charge have large effects on the membrane properties.
Kaminoh, Y. +5 more
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The main phase transition of phospholipid bilayers is a property expressed by the order-disorder conformational change of the lipid tails. Nevertheless, with ionizable phospholipids, changes in the surface charge have large effects on the membrane properties.
Kaminoh, Y. +5 more
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Thermochimica Acta, 1985
Abstract Using a high-temperature Calvet calorimeter as a differential enthalpic analyser Li 2 SO 4 was investigated in the temperature range 800–1200 K. One transformation in the solid state was observed at 847 K with a corresponding enthalpy increment of 24.2 kJ mol −1 .
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Abstract Using a high-temperature Calvet calorimeter as a differential enthalpic analyser Li 2 SO 4 was investigated in the temperature range 800–1200 K. One transformation in the solid state was observed at 847 K with a corresponding enthalpy increment of 24.2 kJ mol −1 .
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