Vol. 3 (2019): Environment. Technology. Resources. Proceedings of the 12th International Scientific and Practical Conference. Volume 3

Engineering Sciences and Production Technologies

• PRECISION MICROMACHINING OF METALS BY CUBR LASER

  Ivaylo Balchev, Lyubomir Lazov, Edmunds Teirumnieks

  13-17

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• VISUALIZATION APPROACHES FOR STIRRED TANK BIOREACTORS

  Armands Bušs, Normunds Jēkabsons, Artūrs Šuleiko, Dagnija Loča, Juris Vanags

  18-23

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• COMBINED TECHNOLOGY OF ELECTRO-SPARK ALLOYING AND THERMAL DIFFUSION BORIDING OF STEEL

  Vladimir Dashkevich, Yulia Usherenko, Victor Ivashko, Igor Matvienko

  24-26

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• METHOD FOR MEASURING MOTION PARAMETERS OF MOVING OBJECTS

  Dimitar Dichev, Iliya Zhelezarov, Tsanko Karadzhov, Nikolay Madzharov, Dimitar Diakov

  27-31

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• USE OF CO2 LASER FOR MARKING AND CLEARING OF TEXTILE MATERIALS FOR MANUFACTURE OF MILITARY EQUIPMENT

  Nikolay Todorov Dolchinkov, Lyubomir Lazov, Jordan Shterev Ivanov, Stelena Dimitrova Lilyanova, Antons Pacejs

  32-36

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• STUDY OF CUTTING AND LABELING OF POLYMETHYLMETHACRYLATE USING A CO2 LASER

  Nikolay Todorov Dolchinkov, Lyubomir Lazov, Jordan Shterev Ivanov, Deyan Dimitrov Nedyalkov, Lyubomir Ivanov Linkov

  37-40

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• COMPARISON OF THE LONG-TERM PROPERTIES IN COMPRESSION OF DIFFERENT SIZE FOAMED CONCRETE

  Rihards Gailītis, Andina Sprince, Leonids Pakrastins, Genadijs Shakhmenko, Tomass Kozlovskis

  41-44

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• EFFECT OF CARBON NANOTUBES ON THE ELECTRICAL PROPERTIES OF THE POLYMERIC COMPOSITES

  Sergey Gango, Konstantin Gusev, Evgeniy Ilin, Mikhail Predtechensky, Vladimir Solovyev, Sergey Trifonov

  45-47

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• STRUCTURE AND MECHANICAL PROPERTIES OF POLYMERIC COMPOSITES WITH CARBON NANOTUBES

  Konstantin Gusev, Vjaceslavs Gerbreders, Andrejs Ogurcovs, Vladimir Solovyev

  48-51

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• MODELLING AND INVESTIGATION OF THE DEPENDENCE OF SUPERHYDROPHOBIC PROPERTIES OF NANOSURFACES ON THE TOPOLOGY OF MICROCHANNELS

  Sharif E. Guseynov, Jekaterina V. Aleksejeva

  52-59

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• ON A 3D INITIAL-BOUNDARY VALUE PROBLEM FOR DETERMINING THE DYNAMICS OF IMPURITIES CONCENTRATION IN A HORIZONTAL LAYERED FINE-PORE MEDIUM

  Sharif E. Guseynov, Ruslans Aleksejevs, Jekaterina V. Aleksejeva

  60-69

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• DEVELOPMENT OF A PARAMETRIC PROGRAM FOR PROCESSING A HYPERBOLIC SURFACE ON A LATHE MACHINE

  Tsvetan Kaldashev

  70-73

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• DEVELOPING LATHES POSTPROCESSOR GENERATING CYCLES OF PROCESSING GROOVES

  Tsvetan Kaldashev

  74-76

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• METHOD FOR MEASURING ERROR ESTABLISHMENT IN 5-AXIS MILLING MACHINES WITH A TOUCH PROBE

  Tsvetan Kaldashev

  77-80

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• STUDY OF ERROR ESTABLISHMENT IN MILLING MACHINES WITH 5 AXES

  Tsvetan Kaldashev, Petar Hadjiiski

  81-83

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• INVESTIGATION ON TRIBOLOGICAL BEHAVIOR OF DUCTILE CAST IRONS WITH NANOSIZED PARTICLES

  Julieta Kaleicheva, Valentin Mishev, Manahil Tongov

  84-87

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• TRIBOLOGICAL PROPERTIES AND MICROSTRUCTURE OF ELECTROLESS NICKEL COATINGS REINFORCED WITH NANOPARTICLES

  Julieta Kaleicheva, Zdravka Karaguiozova, Valentin Mishev

  88-91

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• INVESTIGATION OF THE CORROSION BEHAVIOUR OF ALUMINIUM ALLOY IN SELECTED ENVIRONMENTS

  Kalina Kamarska

  92-94

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• SPECIAL HPERBOLIC TYPE APPROXIMATION FOR SOLVING OF 3-D TWO LAYER STATIONARY DIFFUSION PROBLEM

  Ilmārs Kangro, Harijs Kalis, Ērika Teirumnieka, Edmunds Teirumnieks

  95-100

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• CONTACTLESS MEASURING OF TEMPERATURE WITH DIFFERENTIAL PHOTO RECEIVER

  Tsanko Karadzhov, Dimcho Pulov, Nikolay Angelov

  101-104

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• FRACTAL PROPERTIES OF MICROPLASMA BREAKDOWN AND STRUCTURAL HETEROGENEITY OF SEMICONDUCTOR MATERIALS

  Samuil Khanin, Antonina Shashkina

  105-108

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• ELECTRIC ENERGY GENERATION IN AUTONOMOUS ENERGY SUPPLY MODULE HAVING ROTARY EXPANSION ENGINE

  Andrei Khitrov, Alexander Khitrov, Alexander Ilyin, Yulia Domracheva, Dmitriy Fedorov

  109-113

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• EXTRACTION OF BIOLOGICALLY ACTIVE COMPONENTS FROM FRESHWATER SAPROPEL

  Aneka Klavina, Agris Auce, Ivars Vanadzins, Alise Silova, Linda Dobkevica

  114-118

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• RESEARCH OF LASER MARKING AND ENGRAVING ON BRASS ALLOY 260

  Dainis Klavins, Lyubomir Lazov, Antons Pacejs, Ritvars Revalds, Edgars Zaicevs

  119-123

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• UNIDIRECTIONAL BRAKING ENERGY RECOVERY SYSTEM FOR ELEVATORS

  Kaspars Kroics

  124-128

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• METHOD FOR PRELIMINARY ESTIMATION OF THE CRITICAL POWER DENSITY IN LASER TECHNOLOGICAL PROCESSES

  Lyubomir Lazov, Nikolay Angelov, Edmunds Teirumnieks

  129-133

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• METHODOLOGY FOR AUTOMATIC DETERMINATION OF CONTRAST OF LASER MARKING FOR DIFFERENT MATERIALS

  Lyubomir Lazov, Edmunds Teirumnieks, Nikolay Angelov, Erika Teirumnieka

  134-136

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• PRELIMINARY NUMERICAL ANALYSIS FOR THE ROLE OF SPEED ONTO LASER TECHNOLOGICAL PROCESSES

  Lyubomir Lazov, Nikolay Angelov, Edmunds Teirumnieks, Erika Teirumnieka

  137-142

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• STUDY OF LASER CUTTING AND MARKING ON THE FILT WITH THE HELP OF A CO2-LASER

  Lyubomir Lazov, Nikolay Todorov Dolchinkov, Jordan Shterev Ivanov, Madlen Nikolaeva Peneva, Denitsa Angelova Bojhanova

  143-147

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• EXPERIMENTAL STUDIES OF ROUGHNESS BY SURFACE PLASTIC DEFORMATION ON FLAT SURFACES

  Angel Lengerov

  148-150

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• INDUCTIVE LINEAR DISPLACEMENT SENSOR IN ACTIVE MAGNETIC BEARING

  Sergei Loginov, Dmitriy Fedorov, Igor Savrayev, Igor Plokhov, Andrey Hitrov, Alexander Hitrov

  151-154

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• POWER MODEL OF IMPULSE ARC DISCHARGE GENERATION IN ACTIVE MEDIA OPTICAL PUMPING XENON LAMPS OF SOLID-STATE LASERS

  Yuri Anatolievitch Mandryko, Alexander Sergeevitch Chirtsov, Vladimir Mikhailovich Mikushev

  155-159

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• DETERMINING THE POSITIONS OF THE ELEMENTS FOR THE 3-2-1 PRINCIPLE OF LOCATION IN A SOLIDWORKS ADD-IN

  Oleg Mihaylov

  160-165

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• EVALUATION OF HEARTROT CAUSED PHELLINUS PINI AND RELATED YIELD LOSS IN PINUS SYLVESTRIS STANDS

  Ziedonis Miklašēvičs

  166-171

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• FERROELECTRIC NANOCOMPOSITES WITH GOVERNED INTERFACE ON BASE OF MAGNETIC POROUS GLASSES

  Aleksandr Naberezhnov, Anna Sysoeva, Olga Alekseeva, Polina Vanina, I. Golosovsky, Bernard Nacke, Alexander Nikanorov

  172-176

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• ANALYSIS OF LASER PROCESSING OF ARTIFICIAL LEATHER

  Pāvels Narica, Ruta Laizāne, Antons Pacejs, Silvija Mežinska

  177-183

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• REDUCING RISK FACTORS IN THE WORKPLACE OF THE LASER SYSTEM OPERATOR

  Pāvels Narica, Inese Martinsone

  184-188

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• COMPARATIVE STUDY OF INDUSTRIAL LIGNOSULFONATES AND SOME THEIR PROPERTIES

  Brigita Neiberte, Antons Jablonsky, Galia Shulga, Anrijs Verovkins, Sanita Vitolina, Julia Brovkina

  189-192

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• GRINDING WHEEL MONITORING SYSTEM

  Igor Nikiforov, Pavel Maltsev, Marina Kulakova

  193-196

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• DETERMINATION OF CHAMBER AND PISTON GEOMETRY FOR A ROTARY TYPE EXPANSION MACHINE

  Andrey Perminov, Yury Zhuravlev, Yury Lukyanov, Sergey Tikhonov, Alexander Ilyin

  197-200

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• THE MODEL OF THE CONSTRICTION RESISTANCE OF A SLIDING ELECTRICAL CONTACT

  Igor Plokhov, Igor Savraev, Alexander Markov, Oksana Kozyreva, Nikita Kotkov, Yulia Domracheva

  201-207

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• SYNERGETIC MODEL OF ELECTRO-FRICTION INTERACTION

  Igor Plokhov, Alexander Ilyin, Oksana Kozyreva, Igor Savraev, Nikita Kotkov

  208-213

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• EXPERIMENTAL STUDYING OF MECHANICAL-AND- PHYSICAL PROPERTIES OF RUBBER DURING AGEING

  Svetlana Polukoshko, Andris Martinovs, Edgars Zaicevs

  214-218

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• VALORIZED SODA LIGNIN AND ITS POSSIBLE APPLICATION

  Galia Shulga, Sanita Vitolina, Brigita Neiberte, Jevgenijs Jaunslavietis, Anrijs Verovkins, Jurijs Ozolins, Sandra Livcha, Talrits Betkers

  219-223

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• INTERACTIVE SYSTEM FOR STUDY OF CAR'S MOVEMENT WITH LOW AND ULTRA-LOW PROFILE TIRES IN A TURN

  Stiliyana Taneva, Krasimir Ambarev, Dimitar Katsov

  224-228

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• SURFACING – TECHNOLOGIES AND LAYER PROPERTIES (A REVIEW)

  Manahil Tongov

  229-234

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• INFLUENCE OF THE ANODE AND WEHNELT VOLTAGE ON THE CROSSOVER POSITION IN THE ELECTRON BEAM WELDING

  Manahil Tongov

  235-240

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• ANALYSIS OF THE POWER DRIVES OF TERRAIN FORKLIFTS

  Georgi Valkov, Valyo Nikolov

  241-248

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• THE ANALYSIS OF STOCHASTIC PROCESSES IN UNLOADINGTHE ENERGYWILLOW CUTTINGS FROM THE HOPPER

  Serhii Yermakov, Hutsol Taras, Krzysztof Mudryk, Krzysztof Dziedzic, Liudmyla Mykhailova

  249-252

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• PROFESSIONAL COMPETENCE AS A KEY FACTOR IN IMPROVING THE QUALITY OF ENGINEERING EDUCATION

  Lesia Zbaravska, Olha Chaikovska, Hutsol Taras, Sergii Slobodian, Oleksandr Dumanskyi

  253-256

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• CONSTRUCTION OF PISTON OUTER PROFILE FOR ROTARY TYPE EXPANSION MACHINE

  Yury Zhuravlev, Andrey Perminov, Yury Lukyanov, Sergey Tikhonov, Alexander Ilyin

  257-260

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