Bilateral Intercomparison of the ITS-90 Realisations in the Range from −189.3442 °C (Triple Point of Argon) to 961.78 °C (Freezing Point of Silver) between the MIRS/FE-LMK (Slovenia) and the PTB (Germany)

2003 ◽  
Author(s):  
J. Bojkovski
Keyword(s):  
Triple Point ◽  
Freezing Point ◽  
Triple Point Of Argon ◽  
Freezing Point Of Silver

scholarly journals The Triple Point of Argon as a Thermometric Fixed Point

Nature ◽  
1958 ◽  
Vol 181 (4612) ◽  
pp. 831-831 ◽  
Author(s):  
R. A. H. POOL ◽  
B. D. C. SHIELDS ◽  
L. A. K. STAVELEY
Keyword(s):  
Fixed Point ◽  
Triple Point ◽  
Triple Point Of Argon

scholarly journals Uncertainty Assessment on the Freezing Point of Silver in the ITS-90.

Netsu Bussei ◽  
2000 ◽  
Vol 14 (4) ◽  
pp. 278-283 ◽  
Author(s):  
Masaru Arai ◽  
Katsuhiko Harada
Keyword(s):  
Freezing Point ◽  
Uncertainty Assessment ◽  
Freezing Point Of Silver

scholarly journals 421 Thermodynamic Analysis on Mechanism of Deep Supercooling of Tissue Water in Winter-hardy Plants

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 465F-466
Author(s):  
Fanyi Shen ◽  
Rongfu Gao ◽  
Wenji Liu ◽  
Wenjie Zhang ◽  
Qi Zhao
Keyword(s):  
Triple Point ◽  
Heterogeneous Nucleation ◽  
Freezing Point ◽  
Rigid Wall ◽  
Theoretical Background ◽  
Confined Fluids ◽  
Tissue Water ◽  
Deep Supercooling ◽  
Cell Wall Rigidity ◽  
Solid Walls

It is known that the redistribution of water and the formation of dispersed water units appears to be a prerequisite for deep supercooling. A concentration of the cell solute results from the migration of water during extracelullar freezing and lowers the temperature of homogeneous nucleation, but we are convinced that nucleation of ice within cells may be initiated by a heterogeneous mechanism, except we consider a small spherical cave, the water can freeze on the wall of this cave. We are also convinced that the solid walls of the capillary exert an external potential on the water molecules, causing the shift of the triple point of the confined fluids. Based on Fletcher's work for spherical particle, we have gotten the formula of critical free energy in the process of heterogeneous nucleation of water in a small spherical cave. This presentation introduces the theoretical background and counts the drop of temperature in heterogeneous nucleation. Then, putting two actions (depression of triple point and process of heterogeneous nucleation) together, we have calculated the freezing point. Sometimes it is lower than –38 °C. Some phenomena can be explained by using this theory: 1) Water is at the tension status, which means that it wets plant tissue, so the triple point (melting point) of tissue water can be lowered. 2) The redistribution of water, formation of dispersed water units, and dry region preventing ice from propagating, all allow heterogeneous nucleation, then the two actions can be synthesized and the water would lead to deep supercooling. If the barriers were destroyed, heterogeneous nucleation and deep supercooling would certainly be lost. 3) This theory is only suited to rigid wall of small cave, so we understand why cell wall rigidity has been shown to affect freezing characteristics. Project 39870234 supported by National Nature Science Foundation.

scholarly journals Model representation of diffusion near the triple point of argon

2021 ◽  
Author(s):  
Nataliia Atamas ◽  
D. Gavryushenko ◽  
K. Yablochkova ◽  
M. Lazarenko
Keyword(s):  
Triple Point ◽  
Model Representation ◽  
Triple Point Of Argon
Sign in / Sign up

Export Citation Format

Share Document