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Dissertation for master's degree in civil engineering, structural orientation. Abstract: Today, in earthquake-prone countries, it is recommended to use a variety of energy-depleting tools in order to dissipate the energy of earthquakes on the structure. One of these tools is rotational friction dampers. Because the current regulations do not provide a value for the coefficient ...
Dissertation for receiving a master's degree in the field of civil engineering in the field of earthquakes. Abstract: The introduction of damage generators is very close to the concept of inelastic behavior and, as a result, hysteresis energy. Therefore, it can be said that the hysteresis energy at these levels can be a significant criterion for the design or control of the ...
Dissertation for master's degree in Applied Design-Dynamics and Control Abstract: Transverse instability is one of the common problems in high-speed rail vehicles, which occurs on rails without arches and due to the friction-creep nature of wheel-rail contact that creates non-conservative forces in the system. This phenomenon is called hunting, which is a type of ...
Master's Thesis in Accidents Abstract: Vehicle traffic safety is one of the most basic principles in traffic engineering and transportation planning in the world. Non-observance of safety principles in the design of roads, maintenance and planning of transportation and traffic in the country has caused heavy damages to the society. Slip resistance[1] is considered as one of the ...
Master's Thesis in Civil Engineering - Earthquake Engineering 1391 Abstract Structures with frames with coaxial braces are among earthquake resistant systems. These structures are widely
Master's Thesis in Civil Engineering - Earthquake Engineering March 2012 Abstract Reinforced soil is a special material that is created from the combination of soil and reinforcing member. Arming components resistant to N
Dissertation of Master's Degree in Civil Engineering – Earthquake Engineering 2013 Abstract: Concrete beam and slab bridges with neoprene supports are among the most common highway bridges in the country.
Dissertation for M.Sc degree in soil and soil mechanics engineering, summer 2013, first chapter, introduction of micro candles 1-1 Micro-candles in general in dealing with problematic soils
Dissertation for Master's degree (M.A) major: sports management, the relationship between personality traits and conflict management of managers in sports teams of Fars province. This is a descriptive, correlational research that was conducted using the field method. The statistical sample of this research included all the presidents and vice-presidents of sports boards of Fars ...
Dissertation to receive the master's degree ""M.S.c"" specialization: Textile chemistry and fiber science Abstract: One of the important processes in the completion of textile goods is the underhand improvement in textiles. Finishing the softener provides a desirable softness to the fabric and improves its properties, and the main goals of the softener are to reduce static ...
To receive a master's degree in textile technology engineering. Abstract In the previous research, multi-sized nano-roughness was developed using nanoparticles with different sizes and different surface charges along with silicone resin coating to produce multi-purpose textiles with stable properties. In this research, the idea of ??using laser irradiation and finishing textiles ...
Master's Thesis in Mechatronic Engineering Introduction Recent developments in flexible manufacturing and information technology have made it possible for production systems to provide a wider range of products or services at a lower cost. In addition, the increase in competition at the global level has led to the confrontation of industries with the approach of increasing ...
Dissertation for receiving a master's degree, field of study: electricity-power, orientation: electric machines in a synchronous generator, a dc current is applied to the rotor coil to produce a magnetic field. Then the rotor of the generator is rotated by a prime mover to create a rotating magnetic field in the machine. This magnetic field induces a three-phase voltage in the ...
Dissertation for receiving the master's degree ""M.A."" » Orientation: Business Management Abstract Dealing effectively with conflict is a fundamental challenge in the interactions of people in the work environment. Conflict is a natural and inevitable phenomenon in individual and organizational life and it appears for many reasons and in different forms. The main problem in ...
Dissertation for Master's Degree Abstract The purpose of this research is to investigate the effects of intellectual capital dimensions on increasing the market orientation of private insurance companies in Isfahan province. The method of conducting the present research was descriptive-correlation, and hypothesis testing was done with correlation method and SPSS version 19 ...
Master's Thesis (M.sc) Civil Engineering, Soil and Foundation Mechanics Abstract In this research, the stability of soil reinforced with geogrid located on an underground cavity was analyzed using plaxis software, and the effect of several factors such as the number of geogrid layers, the length of the geogrid layer, the stiffness of the geogrid layer, the optimal location of ...
Master's Thesis in Civil Engineering - Roads and Transportation) Overview Pavements are usually affected by various factors that affect their life. Since a road passes through different areas where the subsoil, the type and volume of traffic and the climatic conditions of these areas are different from each other, therefore, various disadvantages and defects arise in different ...
Doctoral Dissertation of Soil and Foundation Mechanics Abstract In this research, the discrete element method was used to analyze the wave propagation and investigate the factors affecting the wave speed in granular soils. The method of separate elements is important due to the possibility of preparing completely similar samples and checking the effect of changes of a certain ...
Dissertation to receive M.Sc degree in civil engineering, structural orientation. Abstract: One of the ways to strengthen the building against lateral loads is the use of a wind system (convergent or divergent). The increasing use of steel braces to deal with earthquake forces requires that the seismic performance of these types of systems be given more attention. The common ...
Summary of customs and traditions of the people of Iranshahr It is natural that every nation that has its own language has a special literature for its language. The materials collected in this thesis include language, customs and religious beliefs, collective beliefs, celebrations and holidays, marriage ceremonies, mourning, beliefs, proverbs, chistans, local games, arts and ...
Dissertation for master's degree in civil engineering, structural orientation. Abstract Good bond strength between the old and new concrete surface is a key factor in the performance of concrete repairs. The purpose of this thesis is to investigate and evaluate the bond strength between the surface of the old concrete and the added concrete. In this thesis, a laboratory research ...
Dissertation for Master's Degree in Management Chapter 1 General Research Introduction The change in the conditions of today's organizations has led to a change in the attitude towards human resources. In this situation, human power is introduced as the main assets of the organization and a unique competitive advantage, and as a result, employees have become the main managers of ...
Master's thesis in the field of civil engineering, soil and foundation, in this research, the bearing capacity of the conical pile group and the cylindrical pile group with the same volume are calculated and compared. Due to the lack of numerical studies and modeling by software for conical piles compared to laboratory tests in this field, in this research, the modeling of the ...
Civil Engineering Master's Thesis - Soil and Foundation Mechanics Abstract From the past until now, one of the most economical methods to improve the mechanical properties of clay soils has been stabilization by means of additives such as lime and cement in construction projects such as road construction and consolidation of building foundations. Also, with the passage of time ...
Master's thesis in the field of electricity-power orientation Abstract Gearboxes are essential and inseparable components of power transmission systems. These machines convert torque into speed and sometimes speed into torque. The use of mechanical gearboxes in these systems has been common since long ago as an interface between the power generation sector and the power ...
Dissertation for Master's Degree in Civil Engineering, Hydraulic Structures, Abstract: It is obvious that water resources are essential for the life of living organisms and especially for human life. Drainers are a set of structures that are used to transfer water from the dam lake to the discharge point downstream. Therefore, due to the importance of this part of the dam, the ...
Master's Thesis of Precision Instrument Engineering and Industrial Automation in Oil Industries Abstract Non-linear dynamic systems face many challenges that must be investigated. Among these problems, we can point out things like extreme nonlinearity, changing operating conditions, dynamic uncertainty, both structured and unstructured, and external disturbances. Despite the ...
An academic thesis for receiving a master's degree in chemical engineering, environmental orientation. Among the models that are able to make successful predictions for the performance of reverse osmosis membranes, that is, the amount of separation and flow flux in a wide range of physical conditions (membrane and solution) and laboratory conditions (pressure and concentration), ...
Tendency of soil mechanics and foundations. Abstract: Investigating the behavior of soils due to different loadings is one of the most important issues in geotechnical engineering. The behavior of soils depends on several parameters such as grain size, grain type, loading method, stress history, etc. Non-alignment of main stress and main strain directions is a phenomenon that ...
Master's thesis in the field of civil engineering, soil mechanics, and abstract excavation projects in urban areas are always at risk. Therefore, a suitable safety margin should be considered in the design of the guard structure. Traditional slope stability assessment methods, which are usually based on empirical judgments such as the concept of confidence factor and limit ...
Introduction In today's era, the presence of waste materials resulting from various physical and chemical processes is one of the important problems of industrialized and developing countries. So that extensive research is being carried out for methods of recycling or disposing of them to minimize the damage to the environment. In this regard, construction researchers, like ...
Chemical engineering master's thesis without preface today simulation in processes can be an important tool to solve problems in different industries. A new idea that should be done in the real world by trial and error with a lot of costs and risks can be simulated in the environment of a strong software and the results can be used. Simulation can also be used to check and ...
Abstract This thesis deals with uncertainty estimation in robust control of robotic arms and presents new methods based on voltage control strategy for uncertainty estimation. The voltage control method is much simpler compared to the conventional torque control method, because it does not require a complex non-linear model of the robot. As a result, the volume of controller ...
Dissertation for Master's Degree in Nursing (special care field) Abstract Introduction: A pressure ulcer is a tissue damage caused by pressure and can involve skin, muscle, connective tissue, cartilage and bone. Pressure ulcer is a painful, debilitating process and endangers a person's health by increasing mortality and morbidity in terms of increasing the length of ...
Master's thesis in the field of electricity-power orientation Abstract Gearboxes are essential and inseparable components of power transmission systems. These machines convert torque into speed and sometimes speed into torque. The use of mechanical gearboxes in these systems has been common since a long time until now as an interface between the power generation sector and the ...
Dissertation for receiving a master's degree, field of study: electricity-power, orientation: electric machines 1.1 Introduction: In a synchronous generator, a dc current is applied to the rotor coil to produce a magnetic field. Then the rotor of the generator is rotated by a prime mover to create a rotating magnetic field in the machine. This magnetic field induces a ...
Master's Thesis of Polymer Industrial Engineering Abstract Cross-linked polyethylene is one of the materials that is widely used in the field of insulation production in cables due to having suitable electrical properties and good electrical strength. Nowadays, one of the methods of optimizing the properties and changing the behavior of polymers is the use of filler particles ...
In order to obtain a master's degree in the field of mechanical engineering, energy conversion, abstract: In this thesis, the mass and heat transfer by integral method in the flow of natural displacement of a fluid with a very low frontal near the wavy inclined wall and under the magnetic field has been investigated. The wall is permeable and as a result, the fluid can be sucked ...
Master's thesis in the field of mechanical engineering - energy conversion trend Abstract: In this research, the turbulent flow of a non-Newtonian nanofluid in a microchannel with a circular cross-section is simulated. First, the types of classification of microchannels, the methods of making microchannels, as well as the advantages and challenges of using microchannels are ...
Dissertation for M.Sc Mechanical Engineering - Energy Conversion Orientation Abstract: In this research, the turbulent flow of a non-Newtonian nanofluid in a microchannel with a circular cross-section is simulated. First, the types of classification of microchannels, the methods of making microchannels, as well as the advantages and challenges of using microchannels are stated. ...
Field of study: Mechanics, orientation: energy conversion. The present research was conducted in order to investigate the movement of pig in pipelines. Due to the importance of pipelines in providing energy resources in the world, after installation and operation, the maintenance of these lines is of high importance, which has caused special attention to be paid to the design of ...
Dissertation for M.Sc. Mechanical Engineering - Manufacturing and Production Trend Abstract The manufacture of square and rectangular pipes has received more attention due to their wide use in industries that require high pressure and temperature. There are different methods for making rectangular tubes, including extrusion, stretching and pressing. Another method that has been ...
Dissertation for Master's degree (M.Sc.) Direction: Watershed, the effect of different components of rainfall on the morphometric characteristics of landslides in Mazandaran province. Abstract: Landslide is one of the main landslide processes that affects the evolution of mountainous regions and causes catastrophic events. Landslides in Iran, especially in the northern basins of ...
Dissertation for Doctoral Degree Abstract This thesis deals with uncertainty estimation in robust control of robotic arms and presents new methods based on voltage control strategy to estimate uncertainty. The voltage control method is much simpler compared to the conventional torque control method, because it does not require a complex non-linear model of the robot. As a ...
Mechanical Engineering Master's Thesis - Energy Conversion One of the ways to reduce energy consumption for underwater devices is to reduce the drag on these devices. The nose of underwater objects is one of the most important parts of these objects in dealing with currents. By optimizing this part, the drag can be reduced by controlling the boundary layer of the fluid, by ...
Mechanical Engineering (Tendency to Energy Conversion) Abstract: Investigating the disadvantages of urban water supply networks (as an example of the Langrod water network) and optimizing and designing the optimal network for a specific region using the HBMO honey bee matching algorithm. Due to the global water crisis, today a special approach to the design and optimal use of ...
Dissertation for Master's Degree Abstract Achieving higher rates of heat transfer using different techniques that can result in saving a significant amount of energy and also lead to the production of more compact and cheaper devices with higher thermal efficiency has attracted the attention of researchers. Vortex generation is one of the best methods used to increase heat ...
Master's Degree Thesis Abstract With the advancement of technology, the need to use new materials is felt. New methods have been developed to make new materials. Among the new materials in progress, we can mention double-layer sheets. These materials have composite properties of composite materials. The purpose of this research is to produce a double-layer sheet of 304L ...
Dissertation for Master's Degree in Mechanical Engineering Field: Applied Design Abstract In this thesis, stability analysis of composite beam reinforced with carbon nanotubes on elastic support under axial force is investigated. The distribution of nanotubes is assumed to be uniform[1]. To determine the properties of materials reinforced with nanotubes, the results of molecular ...
Dissertation for M.Sc. Mechanical engineering trend - applied design In this research, a wind turbine with a vertical axis of the Savonius model is modeled. The wind turbine has been modeled in the fluid control volume, which is the same as the wind tunnel in real conditions, and has been investigated under wind blowing with different speeds. Also, in terms of overlap ratio, it ...
Dissertation for the Master's degree ""M.Sc"" in Mechanical Engineering - Energy Conversion. Abstract In this thesis, experimental analysis along with numerical simulation has been carried out to investigate the performance of Savunius vertical axis wind turbine. In order to carry out the tests, the turbine was tested in the subsonic wind tunnel. In order to check the accuracy ...
Mechanical Engineering, Manufacturing and Production Department, Master's Thesis, Introduction High-speed rolling bearings have many applications in rotating machines, whose task is to separate the rotating parts from the fixed parts of the machine. Accuracy is very important in machine tool applications and bearing corrosion resistance in chemical machines. In aerospace ...
Dissertation for M.Sc Mechanical Engineering - Applied Design Orientation Abstract Bearings are widely used in various industries including automobile and aircraft industry. Therefore, it is important to check the bearings, therefore, in this research, the hardness matrix of the angular contact ball bearings has been investigated. In this research, the equations governing the ...
Abstract This study was conducted to determine the effect of different levels of vitamin E and C on growth indices and blood parameters in flowerhorn fish (Cichlosoma sp). 9 diets containing a combination of 0, 100 and 1000 mg/kg of food of vitamin E and 0, 100 and 1000 mg/kg of food of vitamin C were considered in three replicates for 8 weeks. The initial weight of the fry was ...
Master's Thesis in Mechanical Engineering (Applied Design): Abstract of the analysis of leading damage in pin connections of composite materials. The purpose of this research is to analyze the leading damage in pin connections of composite materials. To do this, finite element software ABAQUS and FORTRAN programming have been used. The contact between the composite plate with ...
Submitted for Master's Degree Submitted for Master's Degree Abstract In addition to lateral instability, one of the major threats to passenger cars, especially SUVs, is the risk of overturning. In this thesis, a coordination strategy based on fuzzy logic is designed for the integrated operation of active steering, differential, brake and anti-roll bar subsystems. Separate ...
Master's thesis in the field of mechanical engineering (applied design trend) Abstract of the study of the deterioration of non-isotropic TWB sheets under the hydroforming process. During the research, four different metals of aluminum alloys 6111-T4, 5083-H18, 5083-O and dual-phase steel DP590 and two spherical tensile tests and simple uniaxial tensile tests were used. Then we ...
Master's Thesis of Mechanics, Energy Conversion, Abstract In this study, by using the computational fluid dynamics technique, an attempt has been made to obtain the optimal dimensions for the injection nozzles of the vortex tube device. For this purpose, numerical simulation has been performed for different values ??of length, width, and height of injection nozzles, and other ...
Master's Thesis in Mechanical Engineering (Energy Conversion) Abstract Numerical investigation of the effect of microstructures on heat transfer and fluid mixing in microchannels, the need for high heat transfer from electronic packages and optical systems, etc., has created a challenge in the field of thermal management. In this context, microchannel heat wells play a great ...
Master's Thesis in Mechanical Engineering (Applied Design) Abstract of three-dimensional interlayer stress investigation in mechanical connections in layered composite materials The purpose of this thesis is to investigate three-dimensional interlayer stresses in mechanical connections in layered composite materials. For this purpose, finite element method and ABAQUS software ...