Real time workload classification from an ambulatory wireless EEG system using hybrid EEG electrodes.

This paper describes a compact, lightweight and ultra-low power ambulatory wireless EEG system based upon QUASAR's innovative noninvasive bioelectric sensor technologies. The sensors operate through hair without skin preparation or conductive gels. Mechanical isolation built into the harness permits the recording of high quality EEG data during ambulation.

An improved broadband decoupling sequence for liquid crystals and solids.

Recently we developed an efficient broadband decoupling sequence called SPARC-16 for liquid crystals ¿J. Magn. Reson.

13C NMR of liquid crystals with different proton homonuclear dipolar decoupling methods.

The effect of several new homonuclear dipolar decoupling methods (frequency-switching Lee-Goldburg decoupling and two sequences based on z-rotational decoupling) on the 13C spectra of liquid crystals has been studied, and the results are compared with those obtained by using two well-established methods (MREV-8 and BLEW-48). For benzene dissolved in two liquid crystalline solvents, BLEW-48 gives the best spectral resolution. The BLEW-48 sequence has also been applied to the 2D method of proton-encoded local field (PELF) spectroscopy to study a bulk liquid crystal, 4-n-pentyl-4'-cyanobiphenyl (5CB).

[Oxidation of p-nitrobenzylamine and p-dimethylaminomethylbenzylamine by amine oxidases from the human placenta and serum].

Oxidation of p-nitro- and p-dimethylaminomethyl derivatives of benzylamine, catalyzed by amine oxidases from human placenta and blood serum, was studied. The amine oxidase activity was estimated by means of a spectrophotometric procedure involving measurement of aldehyde formed during the reaction after extraction with hexane. For extraction of benzaldehyde and p-nitrobenzaldehyde in the samples HCl was added up to the concentration of 0.

[Modification of the spectrophotometric method of determination of pyridoxal-5'-phosphate and pyridoxal in enzymatic preparations].

In quantitative measurements of pyridoxal-5'-phosphate and pyridoxal in enzymes routinely used phenylhydrasine was substituted for 4-nitrophenylhydrasine. This increased the sensitivity of the method by 70%. The modified procedure had another advantage: it allowed measurements of the optic density of resulting 4-nitrophenylhydrasones at 430 nm for acid solutions and at 550 nm for alkaline solutions.

[Role of phenol-decomposing microorganisms in the process of phenol destruction in the Black Sea].

The number and species of phenol decomposing microorganisms, as well as the activity of their biochemical oxidation of phenol, were studied in waters of the shelf zone of the Black Sea, from the Danube estuary to Batumi. The number of these microorganisms and their phenol decomposing activity were higher in waters near harbours than in regions outside the anthropogenic activity. These parameters were highest in contaminated waters of the river origin.

[Mesotheliomas of the pleura].

The materials concerning 19 patients with pleural mesotheliomas are analysed. The patients were subdivided into three groups according to the clinico-roentgenological picture and course of the affection: 1) four patients in whom pleural mesothelioma proceeded without exudate accumulation; 2) seven patients in whom exudate accumulation in the pleural cavity was the main sign of the tumor; 3) 8 subjects in whom the tumor developed on the side of an artificial pneumothorax many years following its cessation. Among 19 patients only in 5 cases the tumor was suspected soon after their admission to the hospital.