Thermal conductivity of liquids and liquid mixtures has been a subject of active and considerable interest because of its technological applications as well as for providing an insight into the various molecular processes. Similarly, a study of thermal conductivity of liquids and liquid mixtures, at varying temperature and pressure, is of significance due to its applicability in process design,...

The extraction and separation of five different rare-earth elements, La, Nd, Eu, Dy Yb, from an aqueous chloride solution non-aqueous solutions using the solvating extractant Cyanex 923 was investigated. As previous studies had demonstrated potential solvent (NASX) to refine rare earths ethylene glycol, structural analogues glycol (1,2-propanediol 1,3-propanediol) other polar organic solvents (...

Double-stranded oligodeoxyribonucleotides or single-stranded oligoribonucleotides with specific secondary structure have been proposed as potential antagonists to target nucleic acid-binding proteins (the sense approach). A major limitation of this strategy is that these derivatives are generally considered to be too large for pharmaceutical applications. We have developed a synthetic linker ap...

Abstract Ethane and ethanol are produced through steam cracking fermentation into ethylene respectively, which is then hydrolysed monoethylene glycol (MEG). The disadvantages of both processes included used easily oxidized substance large quantities water in order to minimize by-products such as diethylene triethylene glycol. Apart from that, MEG can also be by catalytic hydrogenation biomass a...

Density and Speed of sound have been measured for pure components such furan, (DMF) 2-5-dimethylfuran, MDEA (n-methyldiethanolamine), DEG (diethylene glycol), TEG (triethylene DMA (dimethylacetamide) using Anton Paar (DSA-5000) vibrating U-tube densitometer in a temperature range 278.15 to 343.15 K ambient pressure (100 kPa). density speed furan + MDEA, DEG, TEG, 303.15 whereas DMF DMA, the is ...

BACKGROUND Bisphenol A (BPA) is an endocrine disruptor with potential toxicity. Composite resins may not contain pure BPA, but its derivatives are widely used. Several studies found doses of BPA or its derivatives in saliva or urine of patients after composite resin placement. OBJECTIVE The aims of this study were to establish an exhaustive list of composite resins marketed in Europe and thei...

The free energy difference between complexes of the restriction nuclease EcoRI with nonspecific DNA and with the enzyme's recognition sequence is linearly dependent on the water chemical potential of the solution, set using several very different solutes, ranging from glycine and glycerol to triethylene glycol and sucrose. This osmotic dependence indicates that the nonspecific complex sequester...

The purpose of this study was to evaluate the influence of the internal standard peak on the measured degree of conversion (DC) for methacrylate-based resins analyzed by Fourier-transform infrared spectroscopy (FTIR). The influence of different baseline measurement methods was also determined. Different blends were prepared, mixing BisGMA/BisEMA and BisGMA/TEGDMA at proportions of 0% to 100%, i...