Herein, the synthesis, structural characterization and in vitro biological evaluation of a novel Cu(II) complex with 2-(4-aminophenyl)benzothiazole pharmacophore conjugated (2-pyridinyl)methylamino chelating moiety is reported for first time. A full was conducted by X-ray crystallography, EPR, IR, elemental MS analysis, its binding to CT-DNA investigated UV-vis spectroscopy, ethidium bromide co...

The photometric variations due to magnetically confined material around He-strong stars are investigated within the framework of the Rigidly Rotating Magnetosphere (RRM) model. For dipole field topologies, the model is used to explore how the morphology of light curves evolves in response to changes to the observer inclination, magnetic obliquity, rotation rate and optical depth. The general re...

Transesterification of starch with methyl betainate was studied for the first time, both in aprotic media and solid state, under alkaline acidic conditions. Betaine hydrochloride esterified methanol, attaining a conversion 86%. Starch then converted into either N,N-dimethylformamide or dimethyl sulfoxide, using sulfuric acid as catalyst pre-activating polymer NaOH/ethanol. Furthermore, solid-st...

The viscosities of dimethyl ether (DME, C2H6O) and of the fluorinated propene isomers 2,3,3,3-tetrafluoroprop-1-ene (R1234yf, C3H2F4) and trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) were measured in a combined temperature range from 242 K to 350 K at saturated liquid conditions. The instrument was a sealed gravitational capillary viscometer developed at NIST for volatile liquids. Calibration ...

Recent work has shown the beneficial effects of a proprietary mixture of three non-digestible carbohydrates: konjac glucomannan, xanthan and alginate and these effects have been linked with a synergistic interaction observable with analytical ultracentrifugation, rheological and NMR measurements. These observations have been supported by fundamental dilute solution viscosity studies. Preparatio...

Solution behaviour of PUs of different composition in DMF, LiBr/DMF, and THF was studied by a static light scattering (LS), size exclusion chromatography coupled to a multi-angle light scattering (SEC-MALS), and viscometry. The influence of PU chemical composition, kind of a solvent, and addition of simple salts on PU hydrodynamic volume was investigated. The values of the second virial coeffic...

The rheological properties, structure and phase transitions of hydroxypropyl cellulose in ethanol, dimethyl sulfoxide, ethylene glycol solutions ethylcellulose dimethylformamide are studied using viscometry, the cloud-point method, polarization microscopy, optical interferometry a photoelectric apparatus temperature range 280-360 K. temperature-concentration regions isotropic anisotropic phases...