Music Tune Restoration Based on a Mother Wavelet Construction

It is offered to use the mother wavelet function obtained from the local part of an analyzed music signal. Requirements for the constructed function are proposed and the implementation technique and its properties are described. The suggested approach allows construction of mother wavelet families with specified identifying properties. Consequently, this makes possible to identify the basic signal variations of complex music signals including local time-frequency characteristics of the basic one

КЛИНИКО-ЭТИОЛОГИЧЕСКАЯ ХАРАКТЕРИСТИКА ОСТРЫХ РЕСПИРАТОРНЫХ ВИРУСНЫХ ИНФЕКЦИЙ У ГОСПИТАЛИЗИРОВАННЫХ ДЕТЕЙ ГОРОДА ХАБАРОВСКА В ЭПИДЕМИЧЕСКИХ СЕЗОНАХ 2014—2017 гг.

The article presents the results of etiological diagnostics of cases of acute respiratory viral infections (ARVI) in children during the epidemic periods of 2014—2017, the material sampling was carried out at the Children's regional clinical hospital named after A.K. Piotrovich. Comparative material on the three seasons: 2014—2015, 2015—2016 and 2016—2017 years. The features of the annual dynamics of the frequency of allocation of various respiratory viruses are revealed. The most numerous group of patients was children first year of life (infants) — 154 (35.6 ± 2.3%). Among the hospitalized children prevailed patients with moderate severity (of 90.9 ± 1.3%). The causative agent was determined in 307 of 432 observed patients (71 ± 2.1%). It is shown that the predominant viral pathogen in all seasons is the rhinovirus. Among cases of community-acquired pneumonia the dominant pathogen is respiratory syncytial virus. Bocaviruses, metapneumoviruses and coronaviruses were more often found in the form of association with other viruses. The circulation of the influenza virus was accompanied by a decrease in the attention of other respiratory viruses.В работе представлены результаты этиологической расшифровки острых респираторных вирусных инфекций у детей методом ПЦР в эпидемические периоды 2014—2017 гг. Забор материала (смывы из носоглотки) производился у детей, госпитализированных в Детскую краевую клиническую больницу им. А.К. Пиотровича (г. Хабаровск) по клиническим показаниям. Представлен сравнительный материал по трем сезонам: 2014—2015 гг., 2015—2016 гг. и 2016—2017 гг. Выявлены особенности ежегодной динамики частоты выделения различных респираторных вирусов. Самой многочисленной группой пациентов были дети первого года жизни — 154 человека (35,6 ± 2,3%). Среди госпитализированных детей преобладали больные со средней степенью тяжести (90,9 ± 1,3%). Возбудитель был установлен у 307 из 432 обследованных больных (71 ± 2,1%). Показано, что преобладающим вирусным патогеном во все сезоны является риновирус. Среди случаев внебольничной пневмонии доминирующим патогеном является респираторно-синцитиальный вирус (РС-вирус). Бокавирусы, метапневмовирусы и коронавирусы чаще встречались в виде ассоциации с другими вирусами. Циркуляция вируса гриппа сопровождалась снижением выделения других респираторных вирусов

Epidemiological Characteristics of Enterovirus Infection in the Khabarovsk Territory under Hydrologic Emergency Situation

The paper contains the data on the role of high waters (2013) in changing epidemiological situation on enterovirus infections in the Khabarovsk Territory. The incidence rate in the region was characterized by the significant increase even before the flood, 2013. Thus, two peaks of enterovirus morbidity curve were identified for the period of a week: one - more intensive, another - coincident with flood outbreak. Enterovirus epidemiological process was notified by the changes in clinical picture among the infected population and cohort age-related structure. The percentage of the patients with enterovirus infections in the foci clusters and the index of people infected due to possible exposure to shattering impact of the flood, turned out to be low. However, revealed was high rate of heterogeneity of the circulating enterovirus strains, non-specific for the Khabarovsk territory and mostly originating from countries of Asia-Pacific region - coxsackie A viruses, which might stand for a possible cause of unfavorable epidemiological situation in 2013

Multiannual Analysis of Epidemiological Process Manifestations as Regards Enteroviral Infection in the Khabarovsk Territory, and the Key Factors that Predetermine Aggravation of Epidemiological Situation under the Terms of Flood

Carried out has been retrospective analysis of epidemiological process manifestations as regards enteroviral infection in the Khabarovsk Region over the period of 7 years, prior to rainfall floods in 2013. Revealed is the possibility of aggravation of epidemiological situation during hydrological emergency situation. The premises are as follows: persistent due to specific climate conditions prevalent in the Khabarovsk Territory (high air and surface water temperatures, and high humidity rates) unfavorable epidemiological situation on enteroviral infections, virus-carriage in “healthy” people and extensive dissemination of enteroviruses in the water bodies of ambient environment. Moreover, widespread circulation of different enterovirus genotypes, including the isolates with high genetic similarity to the strains identified earlier in the adjoining People’s Republic of China, takes place

CLINICAL AND ETIOLOGICAL CHARACTERISTICS OF ACUTE RESPIRATORY VIRAL INFECTIONS IN HOSPITALIZED CHILDREN OF THE CITY OF KHABAROVSK IN EPIDEMIC SEASONS 2014—2017

The article presents the results of etiological diagnostics of cases of acute respiratory viral infections (ARVI) in children during the epidemic periods of 2014—2017, the material sampling was carried out at the Children's regional clinical hospital named after A.K. Piotrovich. Comparative material on the three seasons: 2014—2015, 2015—2016 and 2016—2017 years. The features of the annual dynamics of the frequency of allocation of various respiratory viruses are revealed. The most numerous group of patients was children first year of life (infants) — 154 (35.6 ± 2.3%). Among the hospitalized children prevailed patients with moderate severity (of 90.9 ± 1.3%). The causative agent was determined in 307 of 432 observed patients (71 ± 2.1%). It is shown that the predominant viral pathogen in all seasons is the rhinovirus. Among cases of community-acquired pneumonia the dominant pathogen is respiratory syncytial virus. Bocaviruses, metapneumoviruses and coronaviruses were more often found in the form of association with other viruses. The circulation of the influenza virus was accompanied by a decrease in the attention of other respiratory viruses

Efficiency of long-term vinpocetine administration in the treatment of dizziness and associated statodynamic disorders in patients with chronic cerebrovascular insufficiency (EDELWEISS study)

Complaints of dizziness are common in patients diagnosed with chronic cerebrovascular insufficiency (CCVI). Effective therapy of these patients is one of the most urgent problems of outpatient neurological practice.Objective: to evaluate the efficiency and safety of long-term administration of vinpocetine (Cavinton Comforte) in the treatment of dizziness in patients with CCVI.Patients and methods. A total of 139 patients took part in an open-label parallel-group clinical study. Vinpocetine (Cavinton Comforte) and vestibular exercises were prescribed in Group 1 (n=69); vestibular exercises were used in Group 2 (n=70). The efficiency of treatment was evaluated using a visual analog scale (VAS) in assessing vertigo and dizziness, the Dizziness Handicap Inventory (DHI), the Drug Attitude Inventory (DAI), the Montreal Cognitive Assessment (MoCA), the 5-point Likert scale, and videonystagmographic tests. Plasma brain-derived neurotrophic factor (BDNF) concentrations were analyzed before and after treatment. The total duration of the investigation was 8 months (6 months of therapy and 2 months of follow-up after therapy discontinuation).Results and discussion. The administration of vinpocetine significantly decreased the subjective intensity of vertigo and dizziness (on the VAS) and improved daily activities in patients (on the DHI) and a number of parameters according to the video nystagmographic tests: pursuit and saccadic eye movement tests. According to the DNI scores, the improvement changes in the patients' condition significantly correlated with increased plasma BDNF expression throughout the follow-up (Pearson's correlation coefficient>0.5). The use of vinpocetine could improve cognitive functions (on the MoCA and the 5-point Likert scale) and increase patient adherence to the therapy performed (on the DAI). The clinically significant effect in improving the statodynamic function was shown by vinpocetine at 2 months of its administration and was highest at 5 months; there was a significant improvement in cognitive function at 6 months. The long-term use of vinpocetine was not associated with the risk of serious adverse events.Conclusion. The findings allow vinpocetine to be recommended for long-term (at least 5 months) treatment of vertigo, dizziness, and cognitive impairment in patients with CCVI, in this case, the clinical effect is achieved through stimulating neuroplasticity, inducing BDNF synthesis in particular

Online Microfluidic Droplets Characterization Using Microscope Data Intelligent Analysis

Microfluidic devices have opened new opportunities for functional material chemical synthesis in a few applications. The screening of microfluidic synthesis processes is an urgent task of the experimental process in terms of automation and intellectualization. This study proposes a methodology and software for extracting the morphological and dynamic characteristics of generated monodisperse droplets from video data streams obtained from a digital microscope. For this purpose, the paper considers an approach to generating an extended feature space characterizing the process of droplet generation using a microfluidic device based on the creation of synthetic image datasets. YOLOv7 was used as an algorithm for detecting objects in the images. When training this algorithm, the values in the test dataset [email protected] 0.996 were obtained. The algorithms proposed for image processing and analysis implement the basic functionality to extract the morphological and dynamic characteristics of monodisperse droplets in the synthesis process. Laboratory validation and verification of the software demonstrated high results of the identification of key characteristics of the monodisperse droplets generated by the microfluidic device with the average deviation from the real values not exceeding 8%