[Study of the efficacy and safety of sequential use of the drugs Mexidol and Mexidol FORTE 250 in the treatment of stroke].

Objective: To evaluate the effect of Mexidol on the recovery of cognitive functions in patients after ischemic stroke (IS).

Material And Methods: We examined 70 patients with acute IS, who were randomized into 2 groups by random sampling; The 1st group consisted of patients who, against the background of the main standard therapy for 14 days, received Mexidol intravenously, 500 mg 1 time per day, followed by oral administration of Mexidol FORTE 250, 750 mg per day for 60 days (40 patients; 28 men, 12 women). Group 2 consisted of 30 patients (21 men, 9 women) who received only standard therapy.

Signal detection algorithms for interferometric sensors with harmonic phase modulation: evaluation of additive noise effects.

Interferometric techniques are widely used for interrogation of various optical sensors. Techniques utilizing harmonic auxiliary phase modulation are of special interest from a practical point of view, as they do not require a large bandwidth and dynamic range of a phase modulator, yet are capable of accurately demodulating target phase signals when jointed with proper demodulation algorithms. The current paper presents a universal theoretical apparatus aimed at estimating the influence of the noise of an interference signal on noise of the demodulated phase.

Designing selenium functional foods and beverages: A review.

A functional food is any food that has (a) specific nutrient(s) added to it for a specific functional purpose. Selenium (Se) is a metalloid that belongs to group 16 of the periodic table. It may be obtained from myriad sources like soil, water, and living organisms.

Signal detection algorithms for interferometric sensors with harmonic phase modulation: miscalibration of modulation parameters.

In the current paper, we have developed an analytical apparatus that allows us to calculate the phase error produced by miscalibration of modulation parameters. The case of harmonic modulation is considered, and the analysis is performed for cases of miscalibration for two parameters: amplitude and start phase. Two demodulation algorithms are considered: a conventional 4-point algorithm, based on an ordinary least-squares approach, and a previously developed 4+1 algorithm with high immunity to phase error, induced by change of target phase on the demodulation interval.

Signal detection algorithms for interferometric sensors with harmonic phase modulation: distortion analysis and suppression.

In the current paper, distortions in digital demodulation schemes with harmonic phase modulation for interferometric optical sensors are considered. In particular, the influence of target signal variations on phase demodulation errors is theoretically evaluated. An analytical expression describing the phase error magnitude dependence on the first derivative and mean value of the measured signal and amplitude of the phase modulation in the case of a simple 4-point demodulation algorithm is derived.