scholarly journals A comprehensive scenario of the thermodynamic anomalies of water using the TIP4P/2005 model

2016 ◽  
Vol 145 (5) ◽  
pp. 054505 ◽  
Author(s):  
Miguel A. González ◽  
Chantal Valeriani ◽  
Frédéric Caupin ◽  
José L. F. Abascal
Keyword(s):  
Thermodynamic Anomalies ◽  
Anomalies Of Water

scholarly journals New records of the anomaly P syndrome in two water frog species (Pelophylax ridibundus and P. lessonae) in Russia

Herpetozoa ◽  
2019 ◽  
Vol 32 ◽  
pp. 277-281 ◽  
Author(s):  
Anton O. Svinin ◽  
Ivan V. Bashinskiy ◽  
Vitaly V. Osipov ◽  
Leonid A. Neymark ◽  
Alexander Yu. Ivanov ◽  
...  
Keyword(s):  
Hind Limb ◽  
New Records ◽  
Inguinal Region ◽  
Water Frog ◽  
Central Russia ◽  
Water Frogs ◽  
Western Palearctic ◽  
Frog Species ◽  
Jean Rostand ◽  
Anomalies Of Water

The “anomaly P” was described in Palearctic water frogs of the genus Pelophylax by Jean Rostand as complex morphological anomalies of water frogs, including polydactyly, brachymely, hind limb oedema, bone outgrowths, spikes, flexions and additional limbs in the inguinal region. In 2016, the anomaly P syndrome was rediscovered in central Russia, confirming the hypothesis concerning its wider distribution. Here, three new records of this syndrome in two species of western Palearctic water frog from Russia are described.

scholarly journals The interactions between thermodynamic anomalies

2019 ◽  
Vol 151 (2) ◽  
pp. 024502
Author(s):  
Domagoj Fijan ◽  
Mark Wilson
Keyword(s):  
Thermodynamic Anomalies

scholarly journals The anomalies and criticality of liquid water

2020 ◽  
Vol 117 (43) ◽  
pp. 26591-26599 ◽  
Author(s):  
Rui Shi ◽  
Hajime Tanaka
Keyword(s):  
Liquid Water ◽  
Liquid Structure ◽  
State Model ◽  
Large Set ◽  
Local Structures ◽  
Accessible Region ◽  
Dynamical Fluctuation ◽  
No Man's Land ◽  
Thermodynamic Anomalies ◽  
Two State Model

The origin of water’s anomalies has been a matter of long-standing debate. A two-state model, dating back to Röntgen, relies on the dynamical coexistence of two types of local structures—locally favored tetrahedral structure (LFTS) and disordered normal-liquid structure (DNLS)—in liquid water. Phenomenologically, this model not only explains water’s thermodynamic anomalies but also can rationalize the existence of a liquid–liquid critical point (LLCP) if there is a cooperative formation of LFTS. We recently found direct evidence for the coexistence of LFTS and DNLS in the experimental structure factor of liquid water. However, the existence of the LLCP and its impact on water’s properties has remained elusive, leaving the origin of water’s anomalies unclear. Here we propose a unique strategy to locate the LLCP of liquid water. First, we make a comprehensive analysis of a large set of experimental structural, thermodynamic, and dynamic data based on our hierarchical two-state model. This model predicts that the two thermodynamic and dynamical fluctuation maxima lines should cross at the LLCP if it exists, which we confirm by hundred-microsecond simulations for model waters. Based on recent experimental results of the compressibility and diffusivity measurements in the no man’s land, we reveal that the two lines cross around 184 K and 173 MPa for real water, suggesting the presence of the LLCP around there. Nevertheless, we find that the criticality is almost negligible in the experimentally accessible region of liquid water because it is too far from the LLCP. Our findings would provide a clue to settle the long-standing debate.

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