During barrel maturation, the volatile compounds extracted from oak wood can contribute to a wine’s overall aroma and flavour, enhancing its character and complexity. However, barrels have a finite pool of extractable material and the amounts of oak derived volatile compounds available for extraction diminish over time. As a consequence, barrels are typically decommissioned after five to six ye...

By employing two different spectroscopic techniques we have mapped out the variable ISM dust extinction endemic to globular cluster M4. We derive an average E(B−V ) reddening of 0.33 ± 0.01 and R = 3.4±0.4, both in good agreement with previous studies of M4. For individual stars in the most heavily reddened regions of M4, we find E(B − V ) values significantly higher than those inferred by stud...

This review presents studies devoted to the description and comprehension of phenomena connected with the sensing behaviour towards NO(2) of films of two phthalocyanines, titanium bis-phthalocyanine and ruthenium phthalocyanine. Spectroscopic, conductometric, and morphological features recorded during exposure to the gas are explained and the mechanisms of gas-molecule interaction are also eluc...

the effect of four inhibitors on calmalulin (cum) were studied by a ftuorescence and ultraviolet techniques. four compounds in - ( 6 - aminohexyt) 5-chloro - i - napthalenesulphonamide] (w-7), 1 - [ bis - (4 - chtorophenyt) methyl] - 3 - [2, 4-dichloro - β - ( 2 , 4 - dichlorobenzyloxyl) phenethyt] imidazolium chloride (r24571), trifluoperazine (tfp) , thiodiphenylamide chloride (tdpac) showed ...

A new series of Cr(III) , Co(II), Fe(III) and Cu(II) complexes with the chalcone ligand were prepared and spectroscopic method and elemental analysis verified their structures. All the prepared complexes have been identified by available spectroscopic tools (UV-Visible and IR) in addition the structure of complexes was characterized by magnetic moments and molar conductance in DMSO solution .Fr...

The mass spectra of several pyrazaboles of type 1 where R and'or R' = C2H5 have been studied. The loss of boron-bonded hydrocarbon moieties under electron impact is the predominant feature of all spectra. Some ultraviolet and nuclear magnetic resonance data on compounds of type 1 have been collected; bulky substituents were observed to lead to conformational isomers that can be detected by 13C ...

FTIR spectroscopic studies of the simultaneous condensation of HCl and H2O at 190 K – atmospheric applications I. Xueref 2 and F. Dominé Laboratoire de Glaciologie et de Géophysique de l’Environnement, CNRS, 54 rue Molière, B.P. 96, 38402 Saint Martin d’Hères CEDEX, France Now at: Department of Earth and Planetary Sciences & Division of Engineering and Applied Sciences, Harvard University, 20 O...

The influence of ion bombardment on the structure of the silicon lattice has been the subject of numerous investigations. The various effects induced by low energy ion bombardment in the outer layers of a solid lattice damage, ion implantation, surface roughness, sputtering and surface state changes are reflected in changes of the complex dielectric constant Z, which can be measured by means of...

titanium (ti) is a relatively abundant element that has found growing applications in medical science and recently some of ti compounds are introduced as anticancer drugs. in spite of very limited data which exist on the ti metabolism, some proteins might be involved in the mechanism of action of ti. up to our knowledge, there is not any report in the literature concerning binding of ti to apol...