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Academic literature on the topic '66.097.3'
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Journal articles on the topic "66.097.3"
Leng Xue-Dong, Wang Da-Ming, Ba Bin, and Wang Jian-Hui. "A quasi-cyclic compressed sensing delay estimation algorithm based on progressive edge-growth." Acta Physica Sinica 66, no. 9 (2017): 090703. http://dx.doi.org/10.7498/aps.66.090703.
Full textSaidmamatov, Orifjon, Quvondiq Raximov, Paula Rodrigues, and Olga Vasconcelos. "A Ten-Week Motor Skills Training Program Increases Motor Competence in Children with Developmental Coordination Disorder." Children 8, no. 12 (December 6, 2021): 1147. http://dx.doi.org/10.3390/children8121147.
Full textDissertations / Theses on the topic "66.097.3"
Векшин, Віталій Олександрович. "Очищення викидних газів абсорбції від оксидів нітрогену у виробництві нітратної кислоти." Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22711.
Full textThesis for a Candidate of Techical Sciences degree by speciality 05.17.01 – Technology of inorganic substances. – National technical university "Kharkov polytechnical institute", Kharkov, 2016. Thesis is devoted to the development of technology for preparing the catalyst for industrial processes of selective catalytic reduction (SCR) of nitrogen oxides with ammonia. Optimal technological parameters of preparation of carrier based of titanium oxide for following impregnation with catalytically active substance have been experimentally determined. Optimal parameters of application of the active substance – platinum – from solution of hexachloroplatinic acid on the surface of carrier have been found: the number of impregnations is 1, the impregnation time is 5 min, the concentration of the impregnation solution is 10%. The positive influence of modifiers – monobasic organic acids – on the catalyst preparation by impregnation has been proved. Application of formic acid in impregnation as a competing adsorbate and as a reducing agent has been substantiated by means of physico-chemical investigations. Experimental researches of the influence of industrial parameters (temperature, gas hourly space velocity) on the activity of obtained catalysts have been carried out. Correlation between the size of platinum crystallites and the time of catalyst operation has been determined. It obeys the exponential dependence and shows decrease in running time of the catalyst with increase in size of crystallites during sintering. Mathematical model of the SCR process has been developed. Kinetic investigations of the process of NOx reduction on obtained catalysts have been carried out. They allowed to determine the optimal conditions of purification, which are as follows: the maximum degree of reduction can be achieved at T = 473 – 523 K and the bulk gas flow 50 000 – 60 000 m³/h on a catalyst modified with formic acid. The designs of the block catalyst having cellular structure and industrial reactor for it have been suggested. It is shown that the gas flow resistance of the developed catalyst is 12 times lower than that of the ABK-10. Ecological-economic calculations and economic benefit estimation show that decrease of gas flow resistance and 2.5-fold ecological costs reduction will result in savings of 16,038,720 UAH during 8 years, i.e. during full period of catalyst operation.
Векшин, Віталій Олександрович. "Очищення викидних газів абсорбції від оксидів нітрогену у виробництві нітратної кислоти." Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22710.
Full textThesis for a Candidate of Techical Sciences degree by speciality 05.17.01 – Technology of inorganic substances. – National technical university "Kharkov polytechnical institute", Kharkov, 2016. Thesis is devoted to the development of technology for preparing the catalyst for industrial processes of selective catalytic reduction (SCR) of nitrogen oxides with ammonia. Optimal technological parameters of preparation of carrier based of titanium oxide for following impregnation with catalytically active substance have been experimentally determined. Optimal parameters of application of the active substance – platinum – from solution of hexachloroplatinic acid on the surface of carrier have been found: the number of impregnations is 1, the impregnation time is 5 min, the concentration of the impregnation solution is 10%. The positive influence of modifiers – monobasic organic acids – on the catalyst preparation by impregnation has been proved. Application of formic acid in impregnation as a competing adsorbate and as a reducing agent has been substantiated by means of physico-chemical investigations. Experimental researches of the influence of industrial parameters (temperature, gas hourly space velocity) on the activity of obtained catalysts have been carried out. Correlation between the size of platinum crystallites and the time of catalyst operation has been determined. It obeys the exponential dependence and shows decrease in running time of the catalyst with increase in size of crystallites during sintering. Mathematical model of the SCR process has been developed. Kinetic investigations of the process of NOx reduction on obtained catalysts have been carried out. They allowed to determine the optimal conditions of purification, which are as follows: the maximum degree of reduction can be achieved at T = 473 – 523 K and the bulk gas flow 50 000 – 60 000 m³/h on a catalyst modified with formic acid. The designs of the block catalyst having cellular structure and industrial reactor for it have been suggested. It is shown that the gas flow resistance of the developed catalyst is 12 times lower than that of the ABK-10. Ecological-economic calculations and economic benefit estimation show that decrease of gas flow resistance and 2.5-fold ecological costs reduction will result in savings of 16,038,720 UAH during 8 years, i.e. during full period of catalyst operation.
Ситнік, Наталія Сергіївна. "Удосконалення технології переетерифікування жирів з використанням гліцератів лужних металів." Thesis, Український науково-дослідний інститут олій та жирів НААН, 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/23535.
Full textThesis for a candidate degree of technical sciences by specialty 05.18.06 – fats, essential oils and perfume-cosmetic products technology. – National Technical University "Kharkov Polytechnic Institute" Ministry of Education and Science of Ukraine, Kharkov, 2016. The thesis is dedicated to specific scientific and practical task to develop the scientific foundations of fat interesterification technology using new catalysts that constitute alkali metals glycerates. Triacylglycerol composition of initial and interesterified samples of individual oils was defined. The influence of interesterification with traditional catalyst to the melting point of oils was installed. The choice of test fat for studies of fat interesterification was grounded. The efficiency of potassium glycerate and sodium glycerate as catalysts for interesterification of fats was proved. The character of triacylglycerol composition changes of test fat in the process of interesterification in the presence of potassium glycerate compared with industrial catalyst sodium methylate was installed. Shelf life of potassium glycerate was defined and the possibility of recovery after the loss of catalytic activity was revealed. The dependence of the catalytic activity of potassium glycerate on basic physical and chemical properties of the original material was installed. The mathematical model of the interesterification of test fat in the presence of potassium glycerate depending on the basic technological parameters was developed. Recommendations on the choice of modes were formulated and rational conditions of the interesterification were defined. The possibility of potassium glycerate use in the production of qualitive interesretified fats with mixtures of oils and fats was proved. Economic analysis of the cost potassium glycerate was conducted. The advanced chemical fat interesrerification technology using alkali metals glycerates was developed. The project of technical regulations for production of interesretified fats using alkali metals glycerates was developed.
Ситнік, Наталія Сергіївна. "Удосконалення технології переетерифікування жирів з використанням гліцератів лужних металів." Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/23534.
Full textThesis for a candidate degree of technical sciences by specialty 05.18.06 – fats, essential oils and perfume-cosmetic products technology. – National Technical University "Kharkov Polytechnic Institute" Ministry of Education and Science of Ukraine, Kharkov, 2016. The thesis is dedicated to specific scientific and practical task to develop the scientific foundations of fat interesterification technology using new catalysts that constitute alkali metals glycerates. Triacylglycerol composition of initial and interesterified samples of individual oils was defined. The influence of interesterification with traditional catalyst to the melting point of oils was installed. The choice of test fat for studies of fat interesterification was grounded. The efficiency of potassium glycerate and sodium glycerate as catalysts for interesterification of fats was proved. The character of triacylglycerol composition changes of test fat in the process of interesterification in the presence of potassium glycerate compared with industrial catalyst sodium methylate was installed. Shelf life of potassium glycerate was defined and the possibility of recovery after the loss of catalytic activity was revealed. The dependence of the catalytic activity of potassium glycerate on basic physical and chemical properties of the original material was installed. The mathematical model of the interesterification of test fat in the presence of potassium glycerate depending on the basic technological parameters was developed. Recommendations on the choice of modes were formulated and rational conditions of the interesterification were defined. The possibility of potassium glycerate use in the production of qualitive interesretified fats with mixtures of oils and fats was proved. Economic analysis of the cost potassium glycerate was conducted. The advanced chemical fat interesrerification technology using alkali metals glycerates was developed. The project of technical regulations for production of interesretified fats using alkali metals glycerates was developed.
Биканова, Вікторія Валеріївна. "Фотокаталітичні покриви змішаними оксидами на основі титан (IV) оксиду для екотехнологій." Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17089.
Full textThesis for granting the Degree of Candidate of Technical sciences in specialty 05.17.01 – Technology of Inorganic Substances. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2015. Dissertation is devoted to the improvement of the technology of photocatalytic coatings on the basis of mixed oxides of titanium (IV) oxide to produce materials with synergistic effect for wastewater treatment of organic toxicants. Based on the analysis of the relationship of the synthesis conditions, titanium (IV) oxide to metal and ceramic media with structural parameters of the coatings obtained optimum parameters of the process of synthesis of titanium (IV) oxide fireclay carrier, allowing to obtain a uniform composition and distribution over the surface of coatings with high porosity (46-66%) and the total pore volume resistivity (0,88-2,14 cm³/g); it is determined that the process flow of anodic oxidation at a current density of 1,5 A/dm² and a voltage of 60 V allows to obtain oxide covers the composition of Ti/TiO₂ and mixed oxide coatings doped ZnO, ZrO₂ and zinc content of 0,5-2,6 wt. % and zirconium 0,5-2,1 wt. %. and a pore size of 100 nm. Experimental studies have shown that the materials exhibit enhanced photocatalytic activity compared to the individual oxides in 2-4 times due to the existence of a synergistic effect on the level of 1,9-2,3 during the photocatalytic oxidation of aqueous solutions of methyl orange azo dye and phenol. which is higher than for industrial powder photocatalyst Degussa P25 in similar reactions. Based on the determination of kinetic parameters and process concepts are developed mass production of contact in a variety of nature and technology fenolvmisnih disposal of wastewater by photocatalytic oxidation by atmospheric oxygen under the influence of UV radiation.
Биканова, Вікторія Валеріївна. "Фотокаталітичні покриви змішаними оксидами на основі титан (IV) оксиду для екотехнологій." Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17088.
Full textThesis for granting the Degree of Candidate of Technical sciences in specialty 05.17.01 – Technology of Inorganic Substances. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2015. Dissertation is devoted to the improvement of the technology of photocatalytic coatings on the basis of mixed oxides of titanium (IV) oxide to produce materials with synergistic effect for wastewater treatment of organic toxicants. Based on the analysis of the relationship of the synthesis conditions, titanium (IV) oxide to metal and ceramic media with structural parameters of the coatings obtained optimum parameters of the process of synthesis of titanium (IV) oxide fireclay carrier, allowing to obtain a uniform composition and distribution over the surface of coatings with high porosity (46-66%) and the total pore volume resistivity (0,88-2,14 cm³/g); it is determined that the process flow of anodic oxidation at a current density of 1,5 A/dm² and a voltage of 60 V allows to obtain oxide covers the composition of Ti/TiO₂ and mixed oxide coatings doped ZnO, ZrO₂ and zinc content of 0,5-2,6 wt. % and zirconium 0,5-2,1 wt. %. and a pore size of 100 nm. Experimental studies have shown that the materials exhibit enhanced photocatalytic activity compared to the individual oxides in 2-4 times due to the existence of a synergistic effect on the level of 1,9-2,3 during the photocatalytic oxidation of aqueous solutions of methyl orange azo dye and phenol. which is higher than for industrial powder photocatalyst Degussa P25 in similar reactions. Based on the determination of kinetic parameters and process concepts are developed mass production of contact in a variety of nature and technology fenolvmisnih disposal of wastewater by photocatalytic oxidation by atmospheric oxygen under the influence of UV radiation.
Маціпура, Павло Анатолійович. "Інтенсифікація процесу модифікації бітумів епоксидними сполуками." Diss., Національний університет "Львівська політехніка", 2021. https://ena.lpnu.ua/handle/ntb/56683.
Full textБерезка, Тетяна Олександрівна. "Удосконалення технології високостійкого пива з використанням антиоксидантів з рослинної сировини." Thesis, Національний університет харчових технологій, 2014. http://repository.kpi.kharkov.ua/handle/KhPI-Press/25005.
Full textThe thesis for a scientific degree of candidate of technical sciences on specialty 05.18.05 – technology of sugary substances and fermentation products. – National University of Food Technologies, Ministry of Education and Science of Ukraine, Kуiv, 2014. The dissertation paper is devoted to the improvement of beer technology with the use of plant-extracted antioxidants. Iso-alpha acids oxidation by free-radical-chain mechanism during wort boiling with hop or hop products is discussed. The ways to inhibit the oxidation due to the addition of plant-extracted antioxidants are determined. Based on the analysis of kinetics of ozonized air oxidation of hop resins components in methanol CO₂ hop extract solution, the conditions are found that provide accelerated oxidation of hop resins components. The efficiency of application of plant-extracted antioxidants for anti-oxygenation of hop resins components is proved. The most effective antioxidants and their dosing rate have been determined. It is revealed that adding antioxidants extracted from peppermint leaves and oak bark into boiling wort with hop is most effective for wort proteins coagulation and beer clarification, this provides up to 10 % savings in hop or its extracts and increases the physiological value of the beer. It is found that antioxidants extracted from Hypericum and oak bark influence the contents of volatile metabolites of the oxidizing exchange; specifically they reduce the diacetyl and acetic aldehyde content in young and finished beer. The technology of plant-extracted antioxidants application at the stages of wort boiling and cooling is proposed. The conditions of plant-extracted antioxidants and hop products dozing are determined. Industrial tests of production technology for different beer types with the use of plant-extracted antioxidants were performed at the Kharkov branch of the PJSC «SUN InBev Ukraine». An experimental industrial batch of 10,000 dal was produced.
Івасів, Володимир Васильович. "Теоретичні основи технологій гетерогенно-каталітичного одержання акрилатних мономерів." Diss., Національний університет "Львівська політехніка", 2021. https://ena.lpnu.ua/handle/ntb/56689.
Full textДенисенко, Владислав Русланович. "Гідродинаміка неоднорідного псевдозрідження." Master's thesis, Київ, 2019. https://ela.kpi.ua/handle/123456789/27646.
Full textThe object of the research: the hydrodynamics during the pulsation fluidization. The subject of the research: quality characteristics of hydrodynamics of nonuniform fluidization during the granulation process. The aim of the work is establishment of the regularities of the process of non-uniform fluidization in the application of pulsation in self-oscillating mode at elevated height of a layer of granular material and development of methods of calculation of industrial machines. Formulated the principle of interaction of a gas continuous medium with a granular material for the realization of jet pulsation mode of fluidization in Zf/H₀≤0,21. Experimentally determined voids in the areas of camera granulator in self-oscillating mode of fluidization when a fivefold excess of the height of the fixed bed height H₀ of the breakdown of the gas jet Zf. Experimentally investigated the influence of the height of granular material at the dynamics of void and the index of mixing in the core zones of the apparatus. The study proves that the granulation process in the application of a nonuniform jet-pulsed fluidization at elevated heights of a layer of granular material leads to intensification of heat and mass transfer processes in 1,6 times in comparison with barbotine.
Объект исследования: гидродинамика при пульсационном псевдоожижении. Предмет исследования: качественные характеристики гидродинамики неоднородного псевдоожижения при грануляции. Целью работы является установление закономерностей процесса неоднородного струйно-пульсационного псевдоожижения в автоколебательном режиме при повышенных высотах слоя зернистого материала и разработка методики расчета промышленных аппаратов для грануляции. Сформулирован принцип взаимодействия газовой сплошной среды с зернистым материалом для реализации струйно-пульсационного режима псевдоожижения при Zf/H₀≤0,21. Экспериментально определено порозности в зонах камеры гранулятора при неоднородном псевдоожижении в автоколебательном режиме при пятикратном превышению высоты неподвижного слоя H₀ высоты пробоя газового факела Zf. Экспериментально исследовано влияние высоты зернистого материала на динамику изменения порозности и индекс перемешивания в базовых зонах аппарата. Подтверждено исследованиями, что процесс грануляции при применении неоднородного струйно-пульсационного псевдоожижения при повышенных высотах слоя зернистого материала приводит к интенсификации тепломассообменных процессов в 1,6 раза в сравнении с барботажним.