We used laser vaporization coupled to mass spectrometry of the produced vapor to study urania vapor composition at temperatures in the vicinity of its melting point and higher. The very good agreement between measured melting and freezing temperatures and between partial pressures measured on the temperature increase and decrease indicated that the change in stoichiometry during laser heating was very limited. The evolutions with temperature (in the range 2800-3400 K) of the partial pressures of the main vapor species (UO(2), UO(3), and UO(2)(+)) were compared with theoretically predicted evolutions for equilibrium noncongruent gas-liquid and gas-solid phase coexistences and showed very good agreement.
The measured main relative partial pressure ratios around 3300 K all agree with calculated values for total equilibrium
between condensed and vapor phases. It is the first MLN8237 nmr time the three main partial pressure ratios above stoichiometric liquid urania have been measured at the same temperature under conditions close to equilibrium noncongruent gas-liquid phase coexistence. (C) 2011 American Institute of Physics. [doi:10.1063/1.3533439]“
“Integrons have been observed to be frequently associated with uropathogenic bacteria. This study aimed at 1) determining the prevalence of class 1 integrons among ESBL-producing uropathogenic Escherichia coli, and 2) analyzing resistance genes associated with different phylogenetic groups of the integron-positive isolates with special reference to bla(CTX-M) and bla(TEM). Twenty-three ESBL-producing E. coli were studied: Enterobacterial repetitive
intergenic consensus-PCR Selleck I BET 762 (ERIC-PCR) displayed 14 major patterns. Pulse Field Gel Electrophoresis-typing of 8 randomly selected integron-positive strains ruled out any correlation between genotype and antibiotype. Genomic DNA from 14 strains was PCR-positive for class 1 integrons, bla(CTX-M-15) and bla(TEM-1)-like genes. Integron-sequencing reval-ed “”aadA5-dfrA17-dfrA7″” as the most prevalent gene cassette. Our findings unveil the increasing role of the bla-(CTX-M) genes in antibiotic resistance and emphasize on the significance of appropriate empirical treatment for Urinary Tract Infections. CH5183284 in vitro Moreover, this is the first study which reports bla(CTX-M) located on genomic DNA of bacteria from India.”
“Objective. The purpose of this study was to develop a new method to regenerate articular cartilage of the temporomandibular joint (TMJ) by transplantation of free autogenous costal perichondrium (PC).
Study design. In the study, 50 adult rabbits received the operation. For the surgery in the test group, the rabbits were randomly matched in pairs within the group and underwent the surgery of cross transplantation of costal PC after trimming the articular surface of the condyle. Operations were carried out in the same way in the experimental group except for PC transplantation.