Racemization of Hindered Biphenyls in H2O and D2O.

Photodesorption of Ices Ii: H2o and D2o

Gaseous H2O has been detected in several cold astrophysical environments, where the observed abundances cannot be explained by thermal desorption of H2O ice or by H2O gas phase formation. These observations hence suggest an efficient non-thermal ice desorption mechanism. Here, we present experimentally determined UV photodesorption yields of H2O and D2O ice and deduce their photodesorption mech...

Isotopic Effects in Xps Spectra of H2o and D2o

Physical limit of stability in supercooled D2O and D2O¿H2O mixtures

The fluctuation theory of homogeneous nucleation was applied for calculating the physical boundary of metastable states, the kinetic spinodal, in supercooled D2O and D2O1H2O mixtures. The kinetic spinodal in our approach is completely determined by the surface tension and equation of state of the supercooled liquid. We developed a crossover equation of state for supercooled D2O, which predicts ...

Infrared spectra of H2O, H2O and D2O in the liquid phase by single-pass attenuated total internal reflection spectroscopy

Mid-infrared attenuated total internal reflection (ATR) spectra of H2O, H2O and D2O in the liquid state were obtained and normal coordinate analysis was performed based on the potential energy surface obtained from density functional theory (DFT) calculations. Fits of the spectra to multiple Gaussians showed a consistent fit of three bands for the bending region and five bands for the stretchin...

Thermal denaturation of B. subtilis DNA in H2O and D2O observed by electron microscopy.

In the present work we studied the initial part of thermal denaturation curves of B. subtilis DNA in normal and heavy water, observing, by electron microscopy, the "opening" of DNA as a function of temperature. The results support the hypothesis that D(2)O plays a stabilizing role on strands separation during thermal denaturation of DNA.