A method is developed to consistently satisfy the Gibbs equilibrium conditions between the quark-gluon and hadronic phase although each phase has been formulated in separate grand canonical partition function containing three quark flavours. The sector in the space of thermodynamic variables where the transition takes place is restricted to a curve, according to the phase diagram of QCD. The co...

The time evolution of excited nuclei, which are in equilibrium with the surrounding vapour, is investigated. It is shown that the finite nuclear systems undergo a first oder phase transition. The caloric curve is presented for excited O, Mg, Al and Ca and the critical temperature is estimated for O. PACS: 24.10.Cn, 02.70.Ns, 05.30.-d, 05.30.Fk, 05.60.+w, 05.70.Fh

Wide-line 1H-NMR and differential scanning calorimetry measurements were done in aqueous solutions and on lyophilized samples of human ubiquitin between -70 degrees C and +45 degrees C. The measured properties (size, thermal evolution, and wide-line NMR spectra) of the protein-water interfacial region are substantially different in the double-distilled and buffered-water solutions of ubiquitin....

The effect of water sorption on the mobility of molecules on the surface of a crystalline anhydrous solid was investigated to understand the mechanism of its transformation to the corresponding hydrate. Theophylline was chosen as the model compound. The transition water activity for anhydrate to hydrate transformation, RH(T), and the deliquescence RH, RH(0), was determined to be 62% and 99%, re...

The time evolution of excited nuclei, which are in equilibrium with the surrounding vapour, is investigated. It is shown that the nite nuclear systems undergo a rst order phase transition. The caloric curve is presented for excited 16 O, 24 Mg, 27 Al and 40 Ca and the critical temperature is estimated for 16 O.

Methane hydrates (MHs) are present in large amounts in the ocean floor and permafrost regions. Methane and hydrogen hydrates are being studied as future energy resources and energy storage media. To develop a method for gas production from natural MH-bearing sediments and hydrate-based technologies, it is imperative to understand the thermal properties of gas hydrates. The thermal properties' m...

Abstract An unprecedented photoredox‐catalyzed phosphine‐mediated deoxygenation of hexafluoroacetone hydrate was established to accomplish the hydroxylpolyfluoroalkylation electron‐deficient alkenes. A range bis(trifluoromethyl)carbinols were facilely accessed by using readily available hydrate, instead toxic gaseous hexafluoroacetone. alkenes are tolerated, giving corresponding hydro‐hydroxylp...

Gas hydrates have been and still remain a difficult problem in the oil gas industry, solution of which requires considerable efforts resources. In this work, mechanism phase transformations at negative temperatures formation solid is preliminarily studied using reservoir system models consisting mixture hydrate inhibitor thermodynamic action with high concentration distilled water. A three-dime...