Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan (76)
- University of Louisville (40)
- Universitas Indonesia (21)
- Chulalongkorn University (7)
- University for Business and Technology in Kosovo (7)
-
- Technological University Dublin (6)
- Karbala International Journal of Modern Science (3)
- United Arab Emirates University (3)
- National Taiwan Ocean University (2)
- University of Mississippi (2)
- Bowling Green State University (1)
- Embry-Riddle Aeronautical University (1)
- Southern Methodist University (1)
- University of Central Florida (1)
- University of Montana (1)
- University of Northern Colorado (1)
- University of South Florida (1)
- Keyword
-
- Environment (41)
- Envirome (40)
- Sustain (40)
- Sustainability (26)
- Pollution (8)
-
- Built environment (7)
- Carbon Neutral (7)
- Engineering (7)
- Building (6)
- Emissions (6)
- Heating (6)
- Plumbing (6)
- Services (6)
- City planning (5)
- Policy (5)
- Station (5)
- Urban design (5)
- Mathematical model (4)
- Plastic (4)
- Rotor (4)
- Strength (4)
- Air pollution (3)
- Campus (3)
- Composite (3)
- Concrete (3)
- Conservation (3)
- Construction (3)
- Design (3)
- Energy (3)
- Environmental protection (3)
- Publication
-
- Journal of Tashkent Institute of Railway Engineers (71)
- Sustain Magazine (40)
- Makara Journal of Technology (21)
- International Journal of Business and Technology (7)
- Journal of Transportation and Logistics (TRANSLOG) (7)
-
- Building Services Engineering (6)
- Gorniy vestnik Uzbekistana (5)
- Emirates Journal for Engineering Research (3)
- Karbala International Journal of Modern Science (3)
- Journal of Marine Science and Technology (2)
- Beyond: Undergraduate Research Journal (1)
- International Journal of Aquatic Research and Education (1)
- Journal of Transportation Demand Management Research (1)
- Ole Miss Engineer (1)
- Public Land & Resources Law Review (1)
- SMU Data Science Review (1)
- The Pegasus Review: UCF Undergraduate Research Journal (1)
- Ursidae: The Undergraduate Research Journal at the University of Northern Colorado (1)
- Venture: The University of Mississippi Undergraduate Research Journal (1)
Articles 1 - 30 of 174
Full-Text Articles in Engineering
Effect Of Incorporating Pottery And Bottom Ash As Partial Replacement Of Cement, Bassam A. Tayeh, Doha M. Alsaffar, Lawend K. Askar, Asmahan Issa Jubeh
Effect Of Incorporating Pottery And Bottom Ash As Partial Replacement Of Cement, Bassam A. Tayeh, Doha M. Alsaffar, Lawend K. Askar, Asmahan Issa Jubeh
Karbala International Journal of Modern Science
This study addressed the environmental constraints in cement production. Ordinary Portland cement (OPC) was replaced with pottery powder (PP, produced by grinding locally available pottery) and bottom ash (BA) at 10%, 20% and 30% of cement mass. Moreover, 4% calcium chloride solution (CaCl2.2H2O) was used as mixing water. Material properties, such as standard consistency, setting time and compressive strength, were measured with different percentages of OPC replacement with PP and BA. Results indicated that the replacement with PP and BA increased the water demand to achieve the standard consistency. These results revealed that the strength evolution …
Influence Of Nh4f In Dextran Based Biopolymer Electrolytes: Conductivity And Electrical Analysis, Muhamad Hafiz Hamsan, Mohd Fakhrul Zamani Kadir, Shujahadeen Bakar Aziz, Muhammad Amirul Solihin Azha, Saifful Kamaluddin Muzakir
Influence Of Nh4f In Dextran Based Biopolymer Electrolytes: Conductivity And Electrical Analysis, Muhamad Hafiz Hamsan, Mohd Fakhrul Zamani Kadir, Shujahadeen Bakar Aziz, Muhammad Amirul Solihin Azha, Saifful Kamaluddin Muzakir
Makara Journal of Technology
Dextran polymer host was doped with different concentrations of ammonium fluoride (NH4F) via casting technique. In this present work, dextran-NH4F film has been employed to investigate the ionic conductivity using electrochemical impedance spectroscopy from 50 to 5 MHz. The highest room temperature conductivity is achieved at (2.33 ± 0.76) × 10-3 S cm-1 with 40 wt.% NH4F. The electrolyte is found to obey Arrhenius rule at high temperature with activation energy of 0.21 eV. Dielectric analysis has been performed to obtain better understanding on the conductivity pattern. The dielectric parameters e.g. ɛreal, ɛimag, Mreal, and Mimag have been tested as …
Acute Toxicitystudy Of Choline Based Ionic Liquids Towards Danio Rerio Fish And The Aggregation Behavior Of Their Binary Mixtures, Mansoor Ul Hassan Shah, Nasruddin Nasruddin, Suzana Bt Yusup, Muhammad Moniruzzaman
Acute Toxicitystudy Of Choline Based Ionic Liquids Towards Danio Rerio Fish And The Aggregation Behavior Of Their Binary Mixtures, Mansoor Ul Hassan Shah, Nasruddin Nasruddin, Suzana Bt Yusup, Muhammad Moniruzzaman
Makara Journal of Technology
Marine oil spills are effectively controlled by chemical dispersants. However, the toxicity associated with it reduce its employment in marine environment. To overcome this limitation, the acute toxicity of choline based ionic liquids was evaluated as a potential low toxic variant for oil spill remediation. Further, the aggregation behavior of the individual as well as their binary mixtures was also evaluated by employing tensiometry technique. The half-lethal concentration, LC50on zebrafish (Danio rerio) of three choline based ionic liquids showed that the studied ionic liquids (ILs) fall in the range of “practically nontoxic” ( 100-1000 mg L-1).Various micellar properties showed that …
Study On Antibacterial Of Chitosan/Hydroxyapatite Doped Magnesium Composite As A Material For Bone Graft Applications, Andromeda Dwi Laksono, Teodoro A. Amatosa, Jr., Hilda Pebrianti Octaviana Sitorus, Wentika Putri Kusuma Asih, Sulistijono Sulistijono
Study On Antibacterial Of Chitosan/Hydroxyapatite Doped Magnesium Composite As A Material For Bone Graft Applications, Andromeda Dwi Laksono, Teodoro A. Amatosa, Jr., Hilda Pebrianti Octaviana Sitorus, Wentika Putri Kusuma Asih, Sulistijono Sulistijono
Makara Journal of Technology
Hydroxyapatite (HAp) is one of the constituent minerals of bone and teeth, that has been widely used for synthesizing bone graft. Due to the limitation on properties of the hydroxyapatite, it is doping with Magnesium (HAp-Mg). The addition of Chitosan (Chi) was expected to improve the antibacterial properties of HAp-Mg. The present research aims to study the influence of Chitosan with 0, 5, 15, and 25 wt% addition on biocompatibility properties of Chi/HAp-Mg composite. HAp-Mg was synthesized using the sol-gel method; meanwhile, Chi/HAp-Mg composite was manufactured by mixing Chitosan in acetic acid, and HAp-Mg was added into the mixture. The …
Comprehensive Inspection On The Experimental Ferritic Stainless Steel By Means Of Transmission Electron Microscopy And Neutron Diffraction Techniques, Parikin Parikin, Mohammad Dani, Riza Iskandar, Aziz Khan Jahja, Andon Insani, Joachim Mayer
Comprehensive Inspection On The Experimental Ferritic Stainless Steel By Means Of Transmission Electron Microscopy And Neutron Diffraction Techniques, Parikin Parikin, Mohammad Dani, Riza Iskandar, Aziz Khan Jahja, Andon Insani, Joachim Mayer
Makara Journal of Technology
The field of physical metallurgy is one of the primary beacons that guide alloy developments for multipurpose materials such as the in-core structure materials for pressure vessel components and heat exchangers. The surface microstructure of new ferritic steel with significant local constituent materials was characterized by high resolution powder neutron diffractometer (HRPD) and transmission electron microscope (TEM), combined with the energy dispersive X-ray spectroscopy (EDX). The alloy contains73% Fe, 24% Cr, 2% Si, 0.8% Mn, and 0.1% Ni, in %wt. The charge materials were melted by the casting techniques. The neutron diffractograms obtained shows five dominant diffraction peaks at (110), …
Evaluation Of Primal-Dual Splitting Algorithm For Mri Reconstruction Using Spatio-Temporal Structure Tensor And L1-2 Norm, Mia Rizkinia, Masahiro Okuda
Evaluation Of Primal-Dual Splitting Algorithm For Mri Reconstruction Using Spatio-Temporal Structure Tensor And L1-2 Norm, Mia Rizkinia, Masahiro Okuda
Makara Journal of Technology
Magnetic resonance imaging (MRI) is an essential medical imaging technique which is widely used for medical research and diagnosis. Dynamic MRI provides the observed object visualization through time and results in a spatiotemporal signal. The image sequences often contain redundant information in both spatial and temporal domains. To utilize this characteristic, we propose a spatio-temporal reconstruction approach based on compressive sensing theory. We apply spatio-temporal structure tensor using nuclear norm, in addition to the wavelet sparsity regularization. The spatio-temporal structure tensor is a matrix that consists of gradient components of the MRI data w.r.t the spatial and temporal domains. For …
A New Synthesized Microalloys Steel Ods Of High Amplitude Ultrasonically Irradiation, Marzuki Silalahi, Hanif Abdurrahman Wicaksana, Ferhat Aziz, Syahfandi Ahda, Mohamad Riza Iskandar
A New Synthesized Microalloys Steel Ods Of High Amplitude Ultrasonically Irradiation, Marzuki Silalahi, Hanif Abdurrahman Wicaksana, Ferhat Aziz, Syahfandi Ahda, Mohamad Riza Iskandar
Makara Journal of Technology
Micropowders of oxide-dispersion-strengthened (ODS) steel have been synthesized using the ultrasonic irradiation method with variations in amplitude. The ultrasonic irradiation process is performed for 50 h at a frequency of 20 kHz with 40%, 50%, and 60% amplitudes in toluene solution. The formation of Fe-Cr microalloys in the preparation of Fe- 15Cr-0.5Y2O3 powder was analyzed using SEM-EDS, X-ray diffraction (XRD), and TEM-EDS. The percentage of Fe- Cr phase mass fraction of ODS steel micropowder formed during ultrasonic irradiation with 40%:50%:60% amplitude was 12.2%:34.1%:22.1%, with 25.67:77.02:38.51 nm crystallite size. The crystallite size at 50% amplitude was the largest, and the diffusion …
Neutron Diffraction Study Of Multiferroic 0.6nife2o4/0.4batio3 Composite, Engkir Sukirman, Yosef Sarwanto, Syahfandi Ahda, Andon Insani
Neutron Diffraction Study Of Multiferroic 0.6nife2o4/0.4batio3 Composite, Engkir Sukirman, Yosef Sarwanto, Syahfandi Ahda, Andon Insani
Makara Journal of Technology
Neutron diffraction study on the 0.6NiFe2O4/0.4BaTiO3 multiferroic composite has been carried out. The 0.6NiFe2O4/0.4BaTiO3 multiferroic composites have been synthesized by solid reaction method. In this study, 20 g of BaTiO3 (BTO) and 20 g of NiFe2O4 (NFO) compounds were prepared from the powder raw materials of BaO3 and TiO2 for BTO, and NiO and Fe2O3 for NFO. Furthermore, both BTO and NFO were each crushed for 5 hours using High Energy Milling (HEM). Then the BTO and NFO were calcined in the furnace at 950 °C/5 hours and 900 °C/5 hours, respectively. Both NFO and BTO precursors were manually mixed …
Carrying Capacity Of Single-Gauge Railways At Introduction Of Speed Motion Of Passenger-Trains, Saidburkhan Tulaganovich Djabbarov
Carrying Capacity Of Single-Gauge Railways At Introduction Of Speed Motion Of Passenger-Trains, Saidburkhan Tulaganovich Djabbarov
Journal of Tashkent Institute of Railway Engineers
Results over of complex researches of organization of speed and high-speed motion of passenger-trains are brought on existent single-gauge railways, choice and ground of complex of measures on the increase (to maintenance) of freight and throughput capacity, and ensure continuous operation of the infrastructure of operated railways are presented.
Problems Of The State Of The Rolling Surface Of The Rail Head On Speed And High-Speed Railway Sections Of Jsc "Uzbekistan Temir Yollari", Kuvandik Saginovich Lesov, Igor Ivanovich Kuznetsov, Mukhamedali Kazbek Ugli Kenjaliev, Xushnudbek Odilbekovich Samandarov
Problems Of The State Of The Rolling Surface Of The Rail Head On Speed And High-Speed Railway Sections Of Jsc "Uzbekistan Temir Yollari", Kuvandik Saginovich Lesov, Igor Ivanovich Kuznetsov, Mukhamedali Kazbek Ugli Kenjaliev, Xushnudbek Odilbekovich Samandarov
Journal of Tashkent Institute of Railway Engineers
In the process of train traffic on the rolling surface of the rail head are formed bumps and fatigue defects, constant dynamic loads lead to the frustration the upper structure of the path. In this article the analyzes integral indicators of the rolling surface of the rails (long waves, medium waves, short waves) on the section of speed and high-speed train traffic for assess the condition of rails in transit. Problems with the formation of wave-like irregularities on the surface of the rails are identified, promising directions in solving this problem are indicated.
Improvement Of Efficiency Of “O‘Zbekiston” Series Electric Locomotive Control System, Usan Berdiev, Malika Nabievna Tuychieva
Improvement Of Efficiency Of “O‘Zbekiston” Series Electric Locomotive Control System, Usan Berdiev, Malika Nabievna Tuychieva
Journal of Tashkent Institute of Railway Engineers
This article examines the work of efficient use of electric locomotives of the “O‘ZBEKISTON” series operated in the railways of Uzbekistan, storage in working parts, provision of reliable and safe operations, as well as reduction of operating costs and extension of the repair period. For this purpose, during operation, it is constantly necessary to analyze and develop the possibility to achieve planned results using effective methods of technical diagnostics system.
Theoretical Foundations For Determining Kinematic Parameters Of A Jet Unit, Kudrat Raximov, A.R. Babaev, Dilbar Abduraimova
Theoretical Foundations For Determining Kinematic Parameters Of A Jet Unit, Kudrat Raximov, A.R. Babaev, Dilbar Abduraimova
Journal of Tashkent Institute of Railway Engineers
This article discusses the theoretical basis of the dependence of the kinematic parameters, in particular the average speed of flow rate in the suction pipeline of the jet apparatus intended for cleaning water bodies from silting, from changes in the pressure in the mixing chamber. In the problem is considered a single-phase flow, that is, the density of the working and the suction fluid are the same.
Increasing The Efficiency Of Work Of Locomotive Electronic Equipment By Using Portable Diagnostic Devices, Nodir Botirovich Adilov, Nurilla Khayrullayevich Ermatov
Increasing The Efficiency Of Work Of Locomotive Electronic Equipment By Using Portable Diagnostic Devices, Nodir Botirovich Adilov, Nurilla Khayrullayevich Ermatov
Journal of Tashkent Institute of Railway Engineers
This article discusses the current trends in the construction of portable and stationary systems for diagnosing electric and electronic components of locomotives built on integrated chips, as well as presents own model of a portable diagnostic stand for testing electronic devices and electric circuits of locomotives
Evaluation Of The Efficiency Of Flat Sunny Solar Air Heaters With Heat Transfer Turbulizers, Yorkin Sodikovich Abbasov, Muyassar Abubakirovna Umurzakova
Evaluation Of The Efficiency Of Flat Sunny Solar Air Heaters With Heat Transfer Turbulizers, Yorkin Sodikovich Abbasov, Muyassar Abubakirovna Umurzakova
Journal of Tashkent Institute of Railway Engineers
The article presents methods for assessing the effectiveness of flat solar air heaters with heat transfer turbulators. The experience of world scientific achievements in the field of increasing the efficiency of solar air heaters is analyzed. The analysis of the effectiveness of flat air heaters. According to the results of the study, it was determined that, in addition to the traditional formula efficiency, for evaluating the effectiveness of flat air heaters with heat transfer turbulators collectors use methods developed in heat engineering and based on the Reynolds analogy.
Comparative Analysis Of Modern Electric Centralization Systems, Asadulla Raximovich Azizov, Elnara Kuandikovna Ametova
Comparative Analysis Of Modern Electric Centralization Systems, Asadulla Raximovich Azizov, Elnara Kuandikovna Ametova
Journal of Tashkent Institute of Railway Engineers
This article discusses a comparative analysis of modern electrical centralization systems. The possibilities of developing computer centralizations and centralizations implemented on blocks manufactured using microprocessors are discussed
To The Calculation Of Solid-State Cargo Attachment Under The Influence Of Longitudinal Forces, Khabibulla Turanov, Yadgor Ruzmetov, Jamol Shihnazarov
To The Calculation Of Solid-State Cargo Attachment Under The Influence Of Longitudinal Forces, Khabibulla Turanov, Yadgor Ruzmetov, Jamol Shihnazarov
Journal of Tashkent Institute of Railway Engineers
The article is devoted to the calculation of cargo fastening using the current method. It is proved that according to the existing method, the force in all elastic cargo mounts of both one and the other direction under the influence of longitudinal forces has the same value, regardless of the different location of the geometric parameters of the mounts in space. Calculations of forces in elastic elements of fastening by the specified method are given. The results of the comparative analysis showed that the forces in all wire fasteners, in contrast to the existing method of calculation, have different values. …
Analysis Of Sensors Of The Electronic System For Counting Axles (Eacs) And Firm Altpro Frausсher In The Organization Of Train Traffic, Sunnatillo Tuymurodovich Boltaev, Jonibek Fayzullaevich Kurbonov, Aziz Azimovich Saitov
Analysis Of Sensors Of The Electronic System For Counting Axles (Eacs) And Firm Altpro Frausсher In The Organization Of Train Traffic, Sunnatillo Tuymurodovich Boltaev, Jonibek Fayzullaevich Kurbonov, Aziz Azimovich Saitov
Journal of Tashkent Institute of Railway Engineers
In this scientific work, the sensors of the electronic system for counting axles of various firms used in level crossings, trunk and station railways of the Republic of Uzbekistan are investigated. Based on the analysis, the parameters of the EACS accounting system are determined. The parameters that led to system crashes were defined in the electronic system for calculating the axes of the EACS. The parameters of the components of the EACS accounting system are determined, which are the main element in determining free loaded roads, reference points, points and sections of arrows. The conditions for using the sensor parameter …
The Role Of Intra-Production Accounting In The Management System Of Enterprises Of Jsc " Uzbekistan Temir Yullari», Aijan Baxtiyarovna Djumanova, Shohruh Vosiljon O’G’Li Ergashev
The Role Of Intra-Production Accounting In The Management System Of Enterprises Of Jsc " Uzbekistan Temir Yullari», Aijan Baxtiyarovna Djumanova, Shohruh Vosiljon O’G’Li Ergashev
Journal of Tashkent Institute of Railway Engineers
This article discusses the essence, content and tasks of internal accounting and its role in the management system of enterprises of JSC “Uzbekistan temir yullari”. In order to effectively manage the activities of enterprises need to assess the contribution of each farm unit in the final result of the enterprise activity, the mechanism of which are internal accounting, reporting and analysis of their activity. Managers of enterprises for the development and adoption of management decisions need both General information on the enterprise as a whole, and detailed information on intra – production segments of activity-responsibility centers.
To The Question Of The Mathematical Model Of Rational Planning Of Technological Sections Of The Warehouse, Daurenbek Ihtiyarovich Ilesaliev, Jamol Alisherovich Shixnazarov, Avaz Mirsultanovich Merganov
To The Question Of The Mathematical Model Of Rational Planning Of Technological Sections Of The Warehouse, Daurenbek Ihtiyarovich Ilesaliev, Jamol Alisherovich Shixnazarov, Avaz Mirsultanovich Merganov
Journal of Tashkent Institute of Railway Engineers
Modern railway warehouses have an important place in the supply chain.The main task of the railway warehouses is to convert incoming cargo flows with large quantities into outgoing flows.This article discusses the structure of the functioning of a standard railway warehouse.Based on the coating method and methods of V.P. Sityaev developed a rational version of the layout of the railway warehouse, taking into account the cost criteria, representing the amount of logistics costs.Based on the results of the study, three options of non-traditional warehouse planning schemes were obtained and recommended.
Results Of Application Of The Methods “Sologub” And Combinator Sorting In The Process Of Forming Multi-Group Trains At The Sorting Station, Sakijan Kabildjanovich Khudayberganov, Shinpolat Mansuraliyevich Suyunbayev, Sherzod Bakhrom Ugli Jumayev
Results Of Application Of The Methods “Sologub” And Combinator Sorting In The Process Of Forming Multi-Group Trains At The Sorting Station, Sakijan Kabildjanovich Khudayberganov, Shinpolat Mansuraliyevich Suyunbayev, Sherzod Bakhrom Ugli Jumayev
Journal of Tashkent Institute of Railway Engineers
At present, the formation of multi-group freight trains in accordance with the established procedure at all marshalling yards of JSC Uzbek Railways is based on the experience of the relevant personnel. Therefore, one of the urgent tasks is to improve the process of forming such trains based on the introduction of modern technologies. This article presents the results of applying the Sologub methods and combinatorial sorting in the process of forming multi-group trains at the sorting station of JSC Uzbek Railways. The regularity of the dependence of the number of groups in a multi-group train on the required paths was …
Asynchronous Phase Rotor Generators For Power Planes Operating Parallel With A Network, Sharafiddin Kamaliddinovich Alimhodzhaev, Odil Umirzakovich Zakhidov, Mirzohid Hurramovich Taniev
Asynchronous Phase Rotor Generators For Power Planes Operating Parallel With A Network, Sharafiddin Kamaliddinovich Alimhodzhaev, Odil Umirzakovich Zakhidov, Mirzohid Hurramovich Taniev
Journal of Tashkent Institute of Railway Engineers
The article presents the results of studies of asynchronous generators of wind power plants and small hydroelectric power stations operating in parallel with the electric network. The parameters of the equivalent circuit are specified, on the basis of which the analytical dependence of the electromagnetic moment of the generator is found. It is proposed to take into account the revealed features of the mechanical characteristics of the generators that differ from the characteristics determined by the generally accepted analytical method
Comparative Analysis Of Functional Diagnostic Methods Of Traction Asynchronous Motors, Zhavkharbek Sulton Ugli Fayzullaev
Comparative Analysis Of Functional Diagnostic Methods Of Traction Asynchronous Motors, Zhavkharbek Sulton Ugli Fayzullaev
Journal of Tashkent Institute of Railway Engineers
The article provides a comparative analysis of the methods of functional diagnostics of traction induction motors and justifies that of them the most promising are thermal, electric, vibroacoustic and magnetic methods. To obtain the most reliable information in diagnosing the technical condition of traction induction motors, it is recommended that the methods considered be used in conjunction with the simultaneous improvement of their technical means.
The Research Of Transient Processes In Current Transformers By The Operator's Method, Sultan Fayzullayevich Amirov, Shavkat Mukhsimov, Otabek Tashmuhammatovich Boltayev
The Research Of Transient Processes In Current Transformers By The Operator's Method, Sultan Fayzullayevich Amirov, Shavkat Mukhsimov, Otabek Tashmuhammatovich Boltayev
Journal of Tashkent Institute of Railway Engineers
In the article the transient processes occurring in current transformers are investigated and the values of the magnetization current are determined by the operator method using the primary current source. Using the obtained results, the regularities of the magnetization current change in time are analyzed. For the investigated wide-range current transformer with a closed and open core, that is, at different values of T', a comparative analysis of the laws of change in time of the aperiodic components of the magnetic current was carried out. It is determined that current transformers with air gap are effective in all cases when …
On The Dynamics Of The Movement Carriage In The Accelerating Grable The Marshalling Yard, Shukhrat Umarkhodjaevich Saidivaliev, Zakhro Valijanovna Ergasheva
On The Dynamics Of The Movement Carriage In The Accelerating Grable The Marshalling Yard, Shukhrat Umarkhodjaevich Saidivaliev, Zakhro Valijanovna Ergasheva
Journal of Tashkent Institute of Railway Engineers
The article presents the results of studies of the movement of the carriage on the slope hump (including brake position) when exposed to the forces of wind. Maintaining acceptable speed impacts and screening the Park can be achieved by changing the profiles of individual sections of the drain side hump or application of additional wagon retarders.
Sustainable Solutions, Fall/Winter 2020, Issue 41
Sustainable Solutions, Fall/Winter 2020, Issue 41
Sustain Magazine
No abstract provided.
Application Of Modern, Effective Materials In Rail Road Reinforced Bridge Elements, U.Z. Shermuxamedov, F.Z. Zokirov
Application Of Modern, Effective Materials In Rail Road Reinforced Bridge Elements, U.Z. Shermuxamedov, F.Z. Zokirov
Journal of Tashkent Institute of Railway Engineers
The article is about reducing the construction costs of railroad bridges and the effective use modern building materials. The article compares the technical characteristics of composite fittings and metal fittings and their proportionality. Indeed, recourse saving of metal and composite fittings, as well as factors of localization of construction is compared
Mathematical Modeling Of The Structure Cellular Concrete, Anvar Ishanovich Adilkhodjayev, E.V. Shipacheva, S.S. Shaumarov
Mathematical Modeling Of The Structure Cellular Concrete, Anvar Ishanovich Adilkhodjayev, E.V. Shipacheva, S.S. Shaumarov
Journal of Tashkent Institute of Railway Engineers
The article presents the developed mathematical model of the structure of cellular concrete, which allows one to establish pore sizes and characteristics of inter-pore walls corresponding to the required thermal conductivity and strength of the material, and the results of its numerical implementation are presented
Research Of Surface Condition Of The Rails Rollingon Sections Of High-Speed And High-Speed Train Traffic, E.B. Abdualiyev
Research Of Surface Condition Of The Rails Rollingon Sections Of High-Speed And High-Speed Train Traffic, E.B. Abdualiyev
Journal of Tashkent Institute of Railway Engineers
This article analyzes the intensity of impulse irregularities that occur on the surface of the rolling rail heads on the section of high-speed and high-speed train traffic. On the rolling surface of the rail heads, the formation of pulse irregularities is observed, which are fixed by the measuring system of the track measuring car No. 106. This shows the main character of damage to the surface of the rail head ride
Method Of Calculation Of Self-Stressed Concrete Slabs Supported Along The Contour, S.S. Salixanov
Method Of Calculation Of Self-Stressed Concrete Slabs Supported Along The Contour, S.S. Salixanov
Journal of Tashkent Institute of Railway Engineers
The paper presents the developed method for calculating the contour-supported slab of self-stressed concrete. Reinforced concrete slab on the tension cement replaces the traditional construction of the bridge. In this article, in order to exclude reinforcement, the problem of determining the stress-strain state of self-stressed concrete slabs supported along the contour is considered. The values of stresses in the upper and lower faces of the concrete slab, as well as the bending moment in the middle section of the slab
Construction Features Of Transport Tunnels In The Mountain Areas Of Uzbekistan, M.Х. Miralimov, Sh.U. Normurodov
Construction Features Of Transport Tunnels In The Mountain Areas Of Uzbekistan, M.Х. Miralimov, Sh.U. Normurodov
Journal of Tashkent Institute of Railway Engineers
The paper provides information about the transport tunnel 19,2 km long which was recently completed on new electrified railway line “Angren-Pap” in the mountain area of Uzbekistan. It is noted that the most actual for transport tunnels is account of seismic activity of geological environment in the process of design, construction and maintenance. There are given the effects of earthquakes on underground structures and regularities of displacement and stress distribution in the tunnel linings under seismic impacts. The accumulated experience of earthquake-resistant construction in Uzbekistan shows the need to consider several design schemes for the interaction of tunnels in the …