Vol 3 (2019)

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FULL ISSUE TITLE SCIENTIFIC COMMITTEE CONTENTS

Engineering sciences and production technologies

	PRECISION MICROMACHINING OF METALS BY CUBR LASER Ivaylo Balchev, Lyubomir Lazov, Edmunds Teirumnieks	PDF 13-17
	VISUALIZATION APPROACHES FOR STIRRED TANK BIOREACTORS Armands Bušs, Normunds Jēkabsons, Artūrs Šuleiko, Dagnija Loča, Juris Vanags	PDF 18-23
	COMBINED TECHNOLOGY OF ELECTRO-SPARK ALLOYING AND THERMAL DIFFUSION BORIDING OF STEEL Vladimir Dashkevich, Yulia Usherenko, Victor Ivashko, Igor Matvienko	PDF 24-26
	METHOD FOR MEASURING MOTION PARAMETERS OF MOVING OBJECTS Dimitar Dichev, Iliya Zhelezarov, Tsanko Karadzhov, Nikolay Madzharov, Dimitar Diakov	PDF 27-31
	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	PDF 32-36
	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	PDF 37-40
	COMPARISON OF THE LONG-TERM PROPERTIES IN COMPRESSION OF DIFFERENT SIZE FOAMED CONCRETE Rihards Gailītis, Andina Sprince, Leonids Pakrastins, Genadijs Shakhmenko, Tomass Kozlovskis	PDF 41-44
	EFFECT OF CARBON NANOTUBES ON THE ELECTRICAL PROPERTIES OF THE POLYMERIC COMPOSITES Sergey Gango, Konstantin Gusev, Evgeniy Ilin, Mikhail Predtechensky, Vladimir Solovyev, Sergey Trifonov	PDF 45-47
	STRUCTURE AND MECHANICAL PROPERTIES OF POLYMERIC COMPOSITES WITH CARBON NANOTUBES Konstantin Gusev, Vjaceslavs Gerbreders, Andrejs Ogurcovs, Vladimir Solovyev	PDF 48-51
	MODELLING AND INVESTIGATION OF THE DEPENDENCE OF SUPERHYDROPHOBIC PROPERTIES OF NANOSURFACES ON THE TOPOLOGY OF MICROCHANNELS Sharif E. Guseynov, Jekaterina V. Aleksejeva	PDF 52-59
	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	PDF 60-69
	DEVELOPMENT OF A PARAMETRIC PROGRAM FOR PROCESSING A HYPERBOLIC SURFACE ON A LATHE MACHINE Tsvetan Kaldashev	PDF 70-73
	DEVELOPING LATHES POSTPROCESSOR GENERATING CYCLES OF PROCESSING GROOVES Tsvetan Kaldashev	PDF 74-76
	METHOD FOR MEASURING ERROR ESTABLISHMENT IN 5-AXIS MILLING MACHINES WITH A TOUCH PROBE Tsvetan Kaldashev	PDF 77-80
	STUDY OF ERROR ESTABLISHMENT IN MILLING MACHINES WITH 5 AXES Tsvetan Kaldashev, Petar Hadjiiski	PDF 81-83
	INVESTIGATION ON TRIBOLOGICAL BEHAVIOR OF DUCTILE CAST IRONS WITH NANOSIZED PARTICLES Julieta Kaleicheva, Valentin Mishev, Manahil Tongov	PDF 84-87
	TRIBOLOGICAL PROPERTIES AND MICROSTRUCTURE OF ELECTROLESS NICKEL COATINGS REINFORCED WITH NANOPARTICLES Julieta Kaleicheva, Zdravka Karaguiozova, Valentin Mishev	PDF 88-91
	INVESTIGATION OF THE CORROSION BEHAVIOUR OF ALUMINIUM ALLOY IN SELECTED ENVIRONMENTS Kalina Kamarska	PDF 92-94
	SPECIAL HPERBOLIC TYPE APPROXIMATION FOR SOLVING OF 3-D TWO LAYER STATIONARY DIFFUSION PROBLEM Ilmārs Kangro, Harijs Kalis, Ērika Teirumnieka, Edmunds Teirumnieks	PDF 95-100
	CONTACTLESS MEASURING OF TEMPERATURE WITH DIFFERENTIAL PHOTO RECEIVER Tsanko Karadzhov, Dimcho Pulov, Nikolay Angelov	PDF 101-104
	FRACTAL PROPERTIES OF MICROPLASMA BREAKDOWN AND STRUCTURAL HETEROGENEITY OF SEMICONDUCTOR MATERIALS Samuil Khanin, Antonina Shashkina	PDF 105-108
	ELECTRIC ENERGY GENERATION IN AUTONOMOUS ENERGY SUPPLY MODULE HAVING ROTARY EXPANSION ENGINE Andrei Khitrov, Alexander Khitrov, Alexander Ilyin, Yulia Domracheva, Dmitriy Fedorov	PDF 109-113
	EXTRACTION OF BIOLOGICALLY ACTIVE COMPONENTS FROM FRESHWATER SAPROPEL Aneka Klavina, Agris Auce, Ivars Vanadzins, Alise Silova, Linda Dobkevica	PDF 114-118
	RESEARCH OF LASER MARKING AND ENGRAVING ON BRASS ALLOY 260 Dainis Klavins, Lyubomir Lazov, Antons Pacejs, Ritvars Revalds, Edgars Zaicevs	PDF 119-123
	UNIDIRECTIONAL BRAKING ENERGY RECOVERY SYSTEM FOR ELEVATORS Kaspars Kroics	PDF 124-128
	METHOD FOR PRELIMINARY ESTIMATION OF THE CRITICAL POWER DENSITY IN LASER TECHNOLOGICAL PROCESSES Lyubomir Lazov, Nikolay Angelov, Edmunds Teirumnieks	PDF 129-133
	METHODOLOGY FOR AUTOMATIC DETERMINATION OF CONTRAST OF LASER MARKING FOR DIFFERENT MATERIALS Lyubomir Lazov, Edmunds Teirumnieks, Nikolay Angelov, Erika Teirumnieka	PDF 134-136
	PRELIMINARY NUMERICAL ANALYSIS FOR THE ROLE OF SPEED ONTO LASER TECHNOLOGICAL PROCESSES Lyubomir Lazov, Nikolay Angelov, Edmunds Teirumnieks, Erika Teirumnieka	PDF 137-142
	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	PDF 143-147
	EXPERIMENTAL STUDIES OF ROUGHNESS BY SURFACE PLASTIC DEFORMATION ON FLAT SURFACES Angel Lengerov	PDF 148-150
	INDUCTIVE LINEAR DISPLACEMENT SENSOR IN ACTIVE MAGNETIC BEARING Sergei Loginov, Dmitriy Fedorov, Igor Savrayev, Igor Plokhov, Andrey Hitrov, Alexander Hitrov	PDF 151-154
	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	PDF 155-159
	DETERMINING THE POSITIONS OF THE ELEMENTS FOR THE 3-2-1 PRINCIPLE OF LOCATION IN A SOLIDWORKS ADD-IN Oleg Mihaylov	PDF 160-165
	EVALUATION OF HEARTROT CAUSED PHELLINUS PINI AND RELATED YIELD LOSS IN PINUS SYLVESTRIS STANDS Ziedonis Miklašēvičs	PDF 166-171
	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	PDF 172-176
	ANALYSIS OF LASER PROCESSING OF ARTIFICIAL LEATHER Pāvels Narica, Ruta Laizāne, Antons Pacejs, Silvija Mežinska	PDF 177-183
	REDUCING RISK FACTORS IN THE WORKPLACE OF THE LASER SYSTEM OPERATOR Pāvels Narica, Inese Martinsone	PDF 184-188
	COMPARATIVE STUDY OF INDUSTRIAL LIGNOSULFONATES AND SOME THEIR PROPERTIES Brigita Neiberte, Antons Jablonsky, Galia Shulga, Anrijs Verovkins, Sanita Vitolina, Julia Brovkina	PDF 189-192
	GRINDING WHEEL MONITORING SYSTEM Igor Nikiforov, Pavel Maltsev, Marina Kulakova	PDF 193-196
	DETERMINATION OF CHAMBER AND PISTON GEOMETRY FOR A ROTARY TYPE EXPANSION MACHINE Andrey Perminov, Yury Zhuravlev, Yury Lukyanov, Sergey Tikhonov, Alexander Ilyin	PDF 197-200
	THE MODEL OF THE CONSTRICTION RESISTANCE OF A SLIDING ELECTRICAL CONTACT Igor Plokhov, Igor Savraev, Alexander Markov, Oksana Kozyreva, Nikita Kotkov, Yulia Domracheva	PDF 201-207
	SYNERGETIC MODEL OF ELECTRO-FRICTION INTERACTION Igor Plokhov, Alexander Ilyin, Oksana Kozyreva, Igor Savraev, Nikita Kotkov	PDF 208-213
	EXPERIMENTAL STUDYING OF MECHANICAL-AND- PHYSICAL PROPERTIES OF RUBBER DURING AGEING Svetlana Polukoshko, Andris Martinovs, Edgars Zaicevs	PDF 214-218
	VALORIZED SODA LIGNIN AND ITS POSSIBLE APPLICATION Galia Shulga, Sanita Vitolina, Brigita Neiberte, Jevgenijs Jaunslavietis, Anrijs Verovkins, Jurijs Ozolins, Sandra Livcha, Talrits Betkers	PDF 219-223
	INTERACTIVE SYSTEM FOR STUDY OF CAR'S MOVEMENT WITH LOW AND ULTRA-LOW PROFILE TIRES IN A TURN Stiliyana Taneva, Krasimir Ambarev, Dimitar Katsov	PDF 224-228
	SURFACING – TECHNOLOGIES AND LAYER PROPERTIES (A REVIEW) Manahil Tongov	PDF 229-234
	INFLUENCE OF THE ANODE AND WEHNELT VOLTAGE ON THE CROSSOVER POSITION IN THE ELECTRON BEAM WELDING Manahil Tongov	PDF 235-240
	ANALYSIS OF THE POWER DRIVES OF TERRAIN FORKLIFTS Georgi Valkov, Valyo Nikolov	PDF 241-248
	THE ANALYSIS OF STOCHASTIC PROCESSES IN UNLOADINGTHE ENERGYWILLOW CUTTINGS FROM THE HOPPER Serhii Yermakov, Hutsol Taras, Krzysztof Mudryk, Krzysztof Dziedzic, Liudmyla Mykhailova	PDF 249-252
	PROFESSIONAL COMPETENCE AS A KEY FACTOR IN IMPROVING THE QUALITY OF ENGINEERING EDUCATION Lesia Zbaravska, Olha Chaikovska, Hutsol Taras, Sergii Slobodian, Oleksandr Dumanskyi	PDF 253-256
	CONSTRUCTION OF PISTON OUTER PROFILE FOR ROTARY TYPE EXPANSION MACHINE Yury Zhuravlev, Andrey Perminov, Yury Lukyanov, Sergey Tikhonov, Alexander Ilyin	PDF 257-260

ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference

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Engineering sciences and production technologies