Influence of the high voltage waveform on productivity of a plasma-chemical ozone generator on the basis of dielectric barrier discharge (DBD) is studied. Experimental studies were carried out using of two types of AC high voltage: at first, AC high voltage (the voltage effective value is equal to U 2=11 kV), representing continuous periodically repeating inharmonic structures with frequency f 2=400 Hz; secondly, pulsed high voltage with the amplitude equal to U p=20 kV, pulse width 50 ns, the pulse edge 20 ns and the pulse duration 2.5 ms (thus, the pulse repetition rate, in average, is equal to 400 Hz). For the second case, the productivity by ozone of the DBD cell is significantly higher.

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Статья посвящена развитию детских радиопередач «Радио Чувашии» (ГТРК «Чувашия»), их современному состоянию, жанровой и тематической специфике. Внимание акцентируется на роли детских радиопередач в обучении и воспитании подрастающего поколения. В основу работы легли методы эмпирического исследования, а также метод литературного анализа (содержательного, структурного) произведений с учетом специфики звучащего материала. Проанализированы архивные записи детских радиопередач разных лет, изучены личные воспоминания радиожурналистов В. Эльби, В. Минеевой, Г. Вастрюковой. Объем детского вещания сократился с 70 мин. в неделю в советский период до 20-25 мин. в настоящее время. Из эфира исчезли такие формы, как детские радиожурналы и радиогазеты. Указывается на необходимость поиска новых тем и форм подачи материала. Данное исследование должно восполнить пробел в изучении детской радиожурналистики Чувашии.The article is devoted to the history of children’s radio programmes on «Radio Chuvashia» (STRBC «Chuvashia»), their current state, analysis of their genre and thematic specifics. The paper focuses on the role of children’s radio programmes in education and upbringing of the rising generation. The analysis is based on the methods of empirical research. The paper also employs the method of literary analysis (the analysis of content and structure) of works regarding the specifics of the sound material. The authors analyzed the archival records of children’s radio programmess, studied the personal archives of radio journalists V. Elbie, V. Mineeva, G. Vastryukova. The authors conclude that children’s broadcasting time has reduced from 70 minutes (the Soviet period) to 20-25 minutes a week (the present time); stress that radio magazines and radio newspapers for children have disappeared at all; point out the necessity to look for the new topics and forms of presentation of material; intend that the current research paper is to fill the gap in the study of children’s radio journalism in Chuvashia.

The article describes the work on the use of capillary fluorescent flaw detection for the control of metal-glass junction of piezoelectric products. Within the framework of the work, standard methods of testing piezoelectric products for tightness were analyzed, their analysis was carried out, and the scope of applicability of each of them at the stages of the life cycle of piezoelectric products was established. In the course of work, capillary control methods were considered for use in production and their advantages were highlighted. As a result of the work carried out, a capillary luminescent control method was chosen to check the tightness of piezoelectric products in the area of the metal-glass junction. The stages of the capillary luminescent control method are described. Based on the conducted research, a method for controlling the tightness of piezoelectric products was developed, including the use of a capillary luminescent method.