In the paper, two-stage signal pre-processing algorithm based on the ltration is presented. The developed algorithm is dedicated for the diagnostic programmable device PUD-2. The PUD-2 is the real-time analyzer based on programmable logic devices FPGA, as well as on ARM processor. Application of FPGA programmable devices and ARM processors allows to merge advantages of hardware and software implementations. Further, analysis of digital lters parameters in case of its ecient realization on the FPGA is presented. The aim of the study is to select digital-lter parameters in such way that the available resources of FPGA are used eciently and lter characteristics meet established criteria. In the study, low pass nite impulse response and innite impulse response lters are compared. For the rst stage of the signal pre-processing algorithm, hardware implementation of the innite impulse response lter is proposed, contrary to the second stage, where software realization of the nite impulse response lter is suggested. Combination of hardware and software ltration algorithms allows for fast and ecient realization of signal pre-processing algorithm used in analysis carried out on the PUD-2.
The study of wound-healing effect of the gel substances with 2 and 4 % (w/w) concentrations of the dry extracts of the everlasting flowers and of the littlewale leaves in the ratio 1:1 were carried out.It was found that the skin application of the studied gel substances promoted the formation of the structural and functional regenerate in the area of the wound defect. The studied gel contributed to the significant reduction of the healing duration of the full-thickness linear wounds in rats compared to the control group of animals (without treatment) and to the group of animals that received treatment with the reference listed drug. The use of the studied gels, regardless of the content of the plant extracts in them (2 or 4 % (w/w)), was not accompanied by toxic effects.
The steam distillation method was used to obtain samples of essential oil of Pseudotsuga menziesii introduced in Republic of Belarus. More than 20 components have been identified and determined in the essential oil of Pseudotsuga menziesii by gas liquid chromatography. The dominant components are bornylacetate (~25–30 %), camphene (~14–15 %), α-pinene (~7–8 %), β-pinene (~8–10 %). Distribution of the enantiomers of the main components of Pseudotsuga menziesii essential oil are shown. It was determined the optical purity of oil to (–)-bornylacetate. The antimicrobial activity of Pseudotsuga menziesii essential oil was detected in relation to test cultures of gram-positive and gram-negative bacteria. Gram-positive bacterial cultures were more sensitive to the inhibitory effect of essential oil. The effect of the optical activity of essential oil dominant components on antimicrobial properties is shown.
The dynamics of accumulation of flavonoids in the leaves of the littlewale (Lithospermum officinale L.) of the second year of cultivation in various phenological phases was studied. The maximum content of flavonoids was observed during the flowering phase. It was shown that the qualitative composition of the extracts of the leaves of the common sparrow in different phenological phases was changed insignificantly. At each stage of plant development, the flavonoid isoquercitrin was identified, the maximum amount of which was observed in the flowering phase.A comparative assessment of the elemental composition of the leaves of the littlewale is carried out, depending on the phenological phase. The quantitative content of 11 macro- and microelements has been determined. A high content of calcium, potassium and silicon was noted in each phase of plant development.
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