ISSN 1313-7735
RESEARCH PEOPLE AND ACTUAL TASKS ON MULTIDISCIPLINARY SCIENCES
Proceedings of the
Third International Conference
Publisher
Bulgarian National Multidisciplinary scientific network of the professional society for research work
Volume 2
LOZENEC, BULGARIA
8– 10 June, 2011
RESEARCH PEOPLE AND ACTUAL TASKS ON MULTIDISCIPLINARY SCIENCES
Third Conference
Publisher
Bulgarian National Multidisciplinary Scientific Network of the Professional Society for Research Work
with the support of
Bulgarian National Society of Agricultural Engineers
“Engineering and Research for Agriculture”
“Angel Kunchev” University of Rousse, Bulgaria
National Institute of Research-Development for Machines and Installations Designed to Agriculture and Food Industry, Bucharest, Romania
University of Agricultural Sciences and Veterinary Medicine of Banat Timişoara, Faculty of Zootechny and Biotechnology, Romania
Society “ECOLOGICA”, Belgrade, Serbia
Volume 2
Technical sciences
Processing & Post Harvest Technology and Logistics,
Power and machinery
LOZENEC, BULGARIA
8– 10 June, 2011
Organizing Committee
Atanasov Atanas, Bulgaria - Editor in Chief
Mihailov Nikolay, Bulgaria
Vezirov Chavdar, Bulgaria
Kehayov Dimitar, Bulgaria
Bikic Sinisa, Serbia
Vlăduţ Valentin, Romania
Dochev Veselin, Bulgaria
Bungescu Sorin, Romania
Atanasova Polina, Bulgaria
Knežević Dario, Croatia
Sandric Maria, Romania
International Scientific Committee
Vezirov Chavdar, Bulgaria
Banaj Đuro, Croatia
Paradjikovic Nada, Croatia
Vulkov Lubin, Bulgaria
Inoue Keiichi, Japan
Vlăduţ Valentin, Romania
Martinov Milan, Serbia
Popescu Simion, Romania
Bilalis Dimitrios, Greece
Fröba Norbert, Germany
Kehayov Dimitar, Bulgaria
Perković Anica, Croatia
Zheliazkova Irina, Bulgaria
Bungescu Sorin, Romania
Kaya Yalcin, Turkey
Jovanović Larisa, Serbia
ISSN 1313-7735
Printed in Bulgaria
Printing House “Angel Kunchev” University of Rousse
8, Studentska Street, 7017 Rousse, Bulgaria
preface
Dear Colleagues!
The International Scientific Conference ““Research People and Actual Tasks on Multidisciplinary Sciences” is third International Conference organized in Bulgaria with basic purpose to create the framework for the presentation, debate and publication of the valuable scientific results obtained by both the young members.
United by the idea of Multidisciplinary Sciences, the researchers and faculty will report the results of their research. Thus, the scientists will contribute is to promote exchange of research results, scientific ideas and their practical implementation and development work in the various disciplines.
We hope this meeting will initiate new joint research projects, new friendships. We owe special thanks to all participants, and especially to the supporting organizations.
Chief Editor
Dr. Eng. Atanas Atanasov
Contents Volume 2
Technical sciences, Processing & Post Harvest Technology and Logistics, Power and machinery,
1. RESULTS OF THE COMPARATIVE RESEARCH OF GRAIN LOSSES IN WHEAT HARVEST BY WHEAT COMBINES WITH TANGENTIAL HARVESTING DEVICE
S. Barac, D. Djokic, M. Biberdzic, Bojana Milenkovic , A. Djikic and M. Aksic……..1
2. DETERMINATION OF TRIBOLOGY PARAMETERS OF THE ECO BIODEGRADABLE FLUIDS
Vlăduţ V., Voicea I., Matache M., Militaru M., Chiţoiu M., Popa L. Bungescu S.,
Paraschiv G., Biriş S.Şt., Maican E. Atanasov At………………………………………6
3. EMISSION OF POLUTANTS AGRO-PELLETS OBTAINED FROM AGRICULTURAL biomass
Vlăduţ V., Danciu A., Voicea I., Matache M., Biriş S.Şt., Paraschiv G., Maican E.
Bungescu S.3), Atanasov At…………………………………………………………….14
4. ANALYSIS OF THE WORKING PROCESS OF A DOUGH-KNEADING MACHINE WITH PLANETARY MOTION ARM
Gh. Voicu, Gh. Constantin, V. Moise, N.Ungureanu, and P. Voicu…………………24
5. THE STRUCTURAL AND KINEMATIC STUDY OF A SEALING MECHANISM, WITH HOT BARS, OF A PACKING MACHINE
V. Moise, Gh. Voicu, M. Ene, I.A. Tabără, I. Dugăeşescu…………………………..29
6. WORKFLOW AND ON THE EFFICIENCY OF A CONICAL SUSPENDED SIEVE WITH SWINGING MOVEMENT
Gh. Voicu, D. Stoica, N. Ungureanu, and B. Plosceanu…………………………….34
7. INFLUENCE OF SOIL TILLAGE UPON SOME PHYSICAL PROPERTIES OF SOIL IN THE CORN GRAINS CROP
Gheorghe CARCIU, Aurel LAZUREANU, Simion ALDA, Lenuta Gheorghina
CARCIU, Teodor CRISTEA…………………………………………………………….39
8. RESEARCH ON SOIL COMPACTION BY AGRICULTURAL AGGREGATES TYRES WITH VARIABLE MASS
Fl. Loghin and Fl. Rus…………………………………………………………………...44
9. THEORETICAL MODELING THROUGH VIRTUAL PROTOTYPING OF TRANSMISSION OF SOWING MACHINES
Fl. Loghin and Fl. Rus……………………………………………………………………52
10. THEORETICAL ASPECTS OF MODEL RESPONSE TO IMPACT OF RIGID PLANE SURFACE ON APPLES
Tudor CASANDROIU, Gabriel Catalin STAN, Victor MOISE………………………..58
11. STUDY OF THE MOTION OF A PARTICLE ON A CYLINDRCAL SIEVE
Nicolaie ORĂŞANU, Andrei CRAIFALEANU…………………………………………63
12. RESEARCHES ON THE ANALYTICAL DETERMINATION OF THE THREE-POINT HITCH LIFT CAPACITY
L. Vasilache, M. Nastasoiu and V. Padureanu………………………………………..69
13. SOIL PHYSICAL CHARACTERISTICS IN CORRELATION WITH AGRICULTURAL SOIL TILLAGE
I.C. Poenaru, Gh. Voicu, G. Paraschiv, Georgiana Moiceanu………………………75
14. TENSION-DEFORMATION CURVES FOR STALKS OF MISCANTHUS ENERGY PLANT AT SHEAR, CUTTING TENSIONS AND THE WORK PROCESS OF CYLINDER TYPE GRINDING MACHINERY
Georgiana Moiceanu, Gh. Voicu, L. David, and Paula Voicu………………………..80
15. WHEEL MODELING AND ANALYSIS USING CATIA SYSTEMS
G. Haraga, E. Maican, E. Murad, S. Şt. Biriş………………………………………….85
16. THEORETICAL STUDY OF THE DYNAMICS OF ALL-TERRAIN VEHICLES (ATV)
S.St. Biris, N. Ungureanu, E. Murad, M. Manea, V. Vladut, and A. Atanasov…….90
17. VARIATION OF CRUSHING CHARACTERISTICS BY COMPRESSION OF ROMANIAN WHEAT SEEDS
Elena-Madalina Tudosie, Gh. Voicu, T. Casandroiu, C.Tarcolea…………………..95
18. FACTORS OF INFLUENCE ON THE AGRICULTURAL MACHINERY MARKET IN ROMANIA (2008-2011)
Ramona Ioana Tipa, Sabina Funar and Gabriela Ofelia Chirla…………………….100
19. Some considerations of passive vibrations of the work organ of soil cutting machine
Nicolaie Orǎşanu………………………………………………………………………..106
20. REDUCTION OF THE CYLINDRICAL AND PRISMATIC BODIES TO THE LOWER ORDER BODIES
Nicolaie Orăşanu………………………………………………………………………..110
21. The correlation of the heat transfer coefficient with similitude criterions
M.G. (Chirila) Mardare, G. Murariu……………………………………………….…..115
22. STUDIES REGARDING THE PARTICLE SIZE OF WHEAT GRIST USING OPTICAL DIFFRACTION
M. Lupu, V. Padureanu…………………………………………………………………120
23. RESEARCH ON THE USE OF GYROCOPTER FOR GRANULATED CROP PROTECTION PRODUCTS ADMINISTRATION
S. T. Bungescu, J. Pape, W. Stahli, V. Vladut, S. Biris, A. Atanasov...... 125
24. COMPARATIVE STUDY ON THE ENERGETICAL AND KINEMATICS PARAMETERS WITH MOWER-CONDITIONERS MADE IN ROMANIA
Ştefănoiu M.D, Voicu E, Bădescu M…………………………………………………131
25. RESEARCH REGARDING THE INFLUENCE OF THE HARVEST AND CALIBRATION WORK OVER POTATO TUBERS QUALITY
I. Căpăţînă and Gh. Brătucu…………………………………………………………..137
26. RESEARCH ON THE ENERGY GENERATED DURING MIXING PROCESS
M. I. LUCHIAN, C. CSATLOS…………………………………………………………142
27. Theortical and EXPERIMENTAL RESEARCH ON of the longitudinal Dynamic STABILITY OF THE FORKLIFT TRUCKs
S. Popescu, N. Sutru, and G. Boiangiu………………………………………………147
28. EXPERIMENTAL DEVICE FOR THE RESEARCHES ON THE PRECISION OF THE TUBERS PLANTING DISTANCE WITHIN THE ROW FOR DIFFERENTS POTATO PLANTERS
S. Ilyes, S. Popescu, and E. Voicu…………………………………………………..153
29. EQUIPMENTS USED FOR HUMIDITY CONTROL IN WAREHOUSES FOR FRUITS AND VEGETABLES
C.G. Păunescu, Gh. Brătucu………………………………………………………..…159
30. DESIGN AND OPERATION OF A FIBER OPTIC SENSOR FOR LIQUID LEVEL DETECTION
J. Bajić, D. Stupar, M. P. Slankamenac, J.Tomić, M. Živanov, M.
Jelić, R. Aleksić………………………………………………………………..………..164
31. SYSTEM FOR REMOTE READING AND CONTROL OF SENSORS FOR AIR CONTAMINANT DETECTION
Ž. Mihajlović, V. Rajs, V. Milosavljević, M. Živanov...... 169
32. MODELING AND SIMULATION OF ELECTRO-OPTIC EFFECT
M. P. Slankamenac, N. Čikarić, A. Joža, D. Stupar, J. Bajić, M. Jelić,
M. B. Živanov...... 174
33. MODELING AND SIMULATION OF IN-FIBER GRATING OPTIC SENSOR ELEMENTS
M. P. Slankamenac, M. Đorđević, A. Joža, D. Stupar, J. Bajić, M. Jelić,
M. Živanov...... 179
34. OPTOELECTRONICS SYSTEM FOR MEASURING LIGHT-WAVE ATTENUATION IN LIQUIDS
D. Stupar, J. Bajić, M. P. Slankamenac, J. Tomić, M. Živanov, M. Jelić,
L.Manojlović...... 184
35. INVESTIGATION OF THE ACOUSTIC FIELD ON THE SITE OF A LARGE FLESH PROCESSING COMPANY
N. Herişanu and V. Bacria...... 189
36. POSIBILITIES OF USING A 1552nm LASER FOR DENTAL ENAMEL ABLATION
M. Jelić, P. Grozdanović, M.P. Slankamenac, N. Stojanović,
M.B. Živanov…………………………………………………………………………….196
37. HEATING GREENHOUSES WITH TLUD BIOMASS ENERGY MODULES
Erol Murad, Edmond Maican, Ştefan Sorin Biriş, Valentin Vlăduţ…………..…....202
38. PERSPECTIVES ON THE CONSTRUCTION OF COMBINE HARVESTERS, IN THE LAST YEARS
Chirilă C., Vlăduţ V., Matache M., Voicea I., Atanasov At………………………….209