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Number of pages: 172 Category: Industrial Engineering

Dissertation for receiving the master's degree ""M.Sc."" Direction: Process Engineering Abstract In this research, quantitative assessment of risk caused by process accidents, such as leakage The process equipment, including flanges and valves, which may occur in the gas pressure boosting station of Ramsar city, has been investigated. This evaluation is based on the collected ...

Number of pages: 0 Category: Facilities - Mechanics

Master's Thesis of Energy Conversion Mechanical Engineering Abstract In recent years, due to the importance of finding energy, global warming and environmental pollution and its production sources, and the growing need of various industries for various forms of energy, as well as the large volume of its consumers around the world, the need to provide models to optimize energy ...

Number of pages: 146 Category: Facilities - Mechanics

Mechanical Engineering - Applied Design Orientation Abstract: Vibration is one of the important and basic concepts in engineering sciences. In simple words, any system that has mass and spring property has the ability to vibrate and can vibrate at a natural frequency. It can be said with certainty that 95% of vibrations in industries are harmful to systems. If the system is in ...

Number of pages: 152 Category: Industrial Engineering

Dissertation for receiving the master's degree ""MA"" Field of industrial engineering: industries – Winter Industries 2013 Abstract Today attention is paid to the issue of supply chain and its management, in Asr

Number of pages: 109 Category: Electrical Engineering

Dissertation for Master's Degree in Mechatronics Engineering Persian Abstract The purpose of this project is to introduce a new approach for troubleshooting gas transmission pipelines using mechanical waves, which is much cheaper and easier than other methods. who are currently working. These lines are usually located in difficult environmental conditions and far away and in ...

Number of pages: 96 Category: Physical Education - Sports

Master's Thesis in the field of Physical Education and Sports Sciences - Physiology. Abstract: Investigating the effect of four weeks of isometric handgrip exercise on changes in blood flow-related vascular dilation and blood pressure in women with hypertension. It seems that hypertension has a complex relationship with endothelial dysfunction. Increased blood pressure ...

Number of pages: 113 Category: Biology - Environment

Dissertation for receiving a Master's degree (M.Sc.) specialization: Environment Abstract Gaseous liquids obtained from the refining of sour gases are also sour and contain a large percentage of hydrogen sulfide and mercaptans. Therefore, after distilling and preparing the products, it needs refining processes to remove or reduce the amount of sulfur and mercaptans present. ...

Number of pages: 111 Category: Biology - Environment

Dissertation to receive the master's degree ""M.Sc. Orientation: ""Biochemical Engineering"" Abstract: The presence of sulfur compounds in gasoline creates a serious problem in air pollution, environment, corrosion of equipment and destruction of human health. The new environmental standards also impose strict limits on the amount of sulfur and aromatic compounds in gasoline. ...

Number of pages: 105 Category: Chemical - Petrochemical Engineering

Master's Thesis in Chemical Engineering (Gas Orientation) Abstract Laboratory Investigation of Gas Dehumidification Using Triethylene Glycol Solution in Hollow Fiber Membrane Contactors In this study, two hollow fiber membrane contactors with different types of Polyvinylidene Fluoride (PVDF) and Polypropylene (PP) fibers have been used for gas dehumidification by Triethylene ...

Number of pages: 130 Category: Chemical - Petrochemical Engineering

Dissertation for Master's Degree (M.Sc.) Field: Gas Processing and Transmission Engineering Abstract: Today, one of the problems in gas transmission lines is the gas hydrate phenomenon, which is a combination of light gases such as methane, ethane or carbon dioxide with water molecules under certain temperature and pressure conditions to form an ice-like substance that contains ...

Number of pages: 158 Category: Chemical - Petrochemical Engineering

Dissertation for Master's Degree in Chemical Engineering Abstract Paying attention to the issue of safety in industrial and chemical facilities is very important. According to the statistics, the amount of human, economic and environmental damages caused by industrial accidents every year in the world is very high. In addition, some of these damages are basically irreparable. ...

Number of pages: 131 Category: Chemical - Petrochemical Engineering

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 ...

Number of pages: 225 Category: Chemical - Petrochemical Engineering

Dissertation of the Ph.D course in Chemical Engineering, Biotechnology, Abstract: Clostridium Langali is a highly anaerobic estogenic bacterium that can grow on synthesis gas components, i.e. CO and H2/CO2, and convert them into ethanol and acetate at ambient temperature and pressure. During this process, the bacterium shows a complex metabolic pathway that includes both ...

Number of pages: 169 Category: Electronic Engineering

The master's thesis of precision instruments and automation in the oil industry. The introduction of the entire research is one of the important scientific, technical and economic topics, the issue of corrosion of metals and the protection of metal facilities. Investigating the topic of corrosion is not so simple and with all the research done, its factors are still not known ...

Number of pages: 132 Category: Chemical - Petrochemical Engineering

Master's thesis in the field of chemical nanoengineering Abstract: Fabrication of ceramic nanofiltration membrane for chloride ion separation (case study: gas condensate) In this research, chloride ion separation using alumina-titania double layer nanofiltration membrane has been investigated. For this purpose, first, the alumina-titania double-layer membrane is made based on ...

Number of pages: 110 Category: Electronic Engineering

Dissertation for Master's Degree in Mechatronics Engineering Persian Abstract The purpose of this project is to introduce a new approach for troubleshooting gas transmission pipelines using mechanical waves, which is much cheaper and easier than other methods. who are currently working. These lines are usually located in difficult environmental conditions and far away and in ...

Number of pages: 109 Category: Facilities - Mechanics

Dissertation for Master's Degree in Mechanical Engineering-Energy Conversion Abstract The goals of this project include providing a solution for calculating the calorific value of waste based on the knowledge of the composition of waste and also proposing a combined cycle of waste incinerator power generation using the cold energy recovery of liquefied natural gas along with the ...

Number of pages: 188 Category: Facilities - Mechanics

Master's Thesis on Automotive Powertrain Abstract In this thesis, which is presented under the title of turbocharger adaptation suitable for EF7 engine in order to improve volumetric efficiency, firstly, the history of the invention and use of turbocharger is discussed. Then, the naturally aspirated and turbocharged engine are compared, the result of which is to clarify the ...

Number of pages: 130 Category: Facilities - Mechanics

Dissertation for Master's Degree in Energy Systems Engineering Abstract Currently in Iran, there are many gas turbines producing electrical energy whose efficiency is around 30% to 40% depending on the environmental and functional conditions, in fact two thirds of this energy from fuel combustion is wasted through exhaust fumes and thermal waste. In order to increase the ...

Number of pages: 200 Category: Biology - Environment

Dissertation for M.Sc., Energy Systems Engineering - One of the most important issues related to the environment in the oil, gas and petrochemical industries is the proper disposal of waste hydrocarbon gases in industrial units and complexes. One of the most common methods available for the safe disposal of these gases is burning them in flares and releasing them into the ...

Number of pages: 85 Category: Facilities - Mechanics

To get a master's degree in mechanical engineering Abstract: Today, the use of aluminum and magnesium alloys in the automotive and aerospace industries is increasing due to the high strength of these alloys and their light weight. Since the forming ability of these alloys is low at ambient temperature, forming these alloys at high temperatures improves their formability. ...

Number of pages: 123 Category: Civil Engineering

Summer 1390 Expertise Master of the field: Civil Engineering Orientation: Structure Abstract: In this thesis, the effect of nanosilica on the mechanical properties and durability of concrete containing polypropylene fibers

Number of pages: 120 Category: Geography - Urban Planning

Dissertation for master's degree in the Department of Geography and Urban Planning Abstract One of the phenomena that today's cities, especially large cities, are facing is the phenomenon of high-rise construction. The rapid and uncontrolled growth of the population in cities and the consequent need for housing on a large scale, on the one hand, and preventing the horizontal ...

Number of pages: 142 Category: Management

Dissertation for Master's Degree (M.A) in Business Administration, Financial Orientation Abstract Since its introduction, the RBI method has found its place at the level of international oil, gas and petrochemical companies, and many studies have been conducted in this regard. So far, few researches have been conducted in the country about risk-based assessment and management, ...

Number of pages: 127 Category: Psychology

Dissertation for Master's Degree in Counseling and Guidance Abstract The purpose of this study was to investigate the effectiveness of life skills training on the mental health of bright female students in Kermanshah city. The current research was a pilot study of pre-test-post-test design with a control group. The statistical population of this research was made up of bright ...

Number of pages: 0 Category: Management

Dissertation for Master of Business Administration, Financial Orientation (M.A.) Abstract Since its introduction, the RBI method has found its place at the level of international oil, gas and petrochemical companies, and many studies have been conducted in this regard. So far, few researches have been conducted in the country about risk-based assessment and management, and the ...

Number of pages: 129 Category: Psychology

Dissertation for Master's Degree in Psychology (M.A) Major: Clinical Abstract Objective: The objective of this research is the relationship between emotional intelligence and irrational beliefs with mental health in middle school teachers. Method: The method of this research is correlation type. The statistical population includes all male and female teachers (number of 240 ...

Number of pages: 85 Category: Computer Engineering

Master's Thesis in Computer Engineering Abstract: In recent years, due to the growing number of requests and the joining of new customers to the world of computing, computer systems Computing should also change and be more powerful and flexible than before. In the meantime, cloud computing was presented as a model beyond a system that currently has the ability to respond to most ...

Number of pages: 101 Category: Textile Industries

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 ...

Number of pages: 125 Category: Geography - Urban Planning

Master's Thesis on Natural Resources - Desertification Abstract Mangrove forests are located in the southern coastal areas of Iran, and due to their numerous functions and environmental values, it is necessary to protect, restore and develop them. Deciding the way to act in a certain way is consciously to achieve the goals, so as to choose a suitable option among various ...

Number of pages: 128 Category: Geography - Urban Planning

Dissertation for receiving a master's degree in the field: political geography. Abstract: The development of communication in the form of virtual space communication, the possibility of information exchange, access and access of people and devices to each other through the Internet at the same time, has created a new paradigm in human life, which is considered as an advantage ...

Number of pages: 100 Category: Electronic Engineering

Abstract The main task of the synchronous generator excitation system is to provide the necessary voltage for the generator excitation winding. The excitation voltage is a dc voltage and it is used to create a flux in the excitation winding of the generator and consequently to produce a magnetic field to produce electrical energy by a synchronous generator. In the provided ...

Number of pages: 129 Category: Civil Engineering

Dissertation for Master's Degree in Civil Engineering - Structures Abstract: One of the important problems in seismic design and implementation of buildings is the significant dead weight used in it. Therefore, in the case of using lightweight concrete that has favorable mechanical properties, significant benefits can be obtained, including a reduction in dead load and ...

Number of pages: 127 Category: Biology - Environment

Master's thesis in the field of civil engineering (environmental engineering) is an abstract of the surface absorption method, one of the effective methods for removing metals, including nickel metal. In this research, modified rice paddy has been used as absorbent material. Since this adsorbent is a natural material with a high contact surface, in addition to its high ability ...

Number of pages: 232 Category: Civil Engineering

Dissertation for Master's Degree in Civil Engineering - Earthquake Engineering Abstract The city of Birjand, as the capital of South Khorasan province, is located in the structural zone of Sistan, which is particularly sensitive due to its proximity to seismic and fundamental faults (Neh Khawri and Westi faults in the south, Ardkol fault in the northeast, Nawaz fault in the ...

Number of pages: 159 Category: Civil Engineering

Dissertation to receive the master's degree in civil engineering ""M. Sc"" Major: Water. Abstract The aim of this thesis is to investigate the trend of annual rainfall changes in 37 selected stations in the whole of Iran using non-parametric method. The two Mann-Kendall tests and the age estimator, which are among the most common non-parametric methods, were used for the trend ...

Number of pages: 124 Category: Civil Engineering

Education Level: Master's Degree, Field: Civil Engineering, Major: Structures Abstract: In this thesis, the effect of nanosilica on the mechanical properties and durability of concrete containing polypropylene fibers was investigated. Polypropylene fibers with a length of 18 mm and a ratio of length to diameter of 0.9 mµ were used. The effect of fibers and nanosilica in three ...

Number of pages: 104 Category: Physical Education - Sports

Dissertation for receiving a master's degree in the field of physical education in the field of sports physiology. Abstract: Athletes have been continuously searching for solutions to improve their sports performance. One of the methods that can develop sports performance and prepare athletes physically and mentally for sports activities is the use of herbal supplements. The aim ...

Number of pages: 124 Category: Physical Education - Sports

Dissertation for Master's Degree in Sports Physiology Persian Abstract of Dissertation: Background and Purpose: The purpose of this research was to investigate the effect of a period of L-arginine supplementation on the responses of VEGF, endostatin and maximal oxygen consumption of trained wrestlers following a session of stimulating activity. Materials and methods: In this ...

Number of pages: 117 Category: Electronic Engineering

Presented to graduate education management as part of the academic activities required to obtain a master's degree in the field of mechatronics. Abstract As you know, air conditioner is a high consumption device and has a Freon refrigeration cycle. What drew the companies to the production of inverters was to solve the shortcoming of air conditioners in high energy consumption. ...

Number of pages: 115 Category: Paramedical

Dissertation for Ph.D. degree in Pharmacy, Persian Summary Orally-opening tablets are solid pharmaceutical forms that open in the oral cavity in less than 1 minute without leaving any residue. The purpose of this research is to prepare and evaluate fast-opening oral tablets of amlodipine mg5, which is a long-acting blocker of calcium channels used in the treatment of chronic ...

Number of pages: 84 Category: Medical Sciences

Master's course in intensive care nursing Abstract Introduction: In the intensive care unit, ventilator-associated pneumonia ranks first among hospital infections. Since the role of nurses in preventing this complication is very important, the present study was conducted in order to compare the effect of two methods of face-to-face training and clinical guidelines for the ...

Number of pages: 85 Category: Physical Education - Sports

Dissertation for receiving Ph.D degree, specialization: exercise physiology, background and purpose: normal liver function is of particular importance for metabolism, and it may be affected by exercise. Although many studies have examined the effects of aerobic exercise on liver function, available evidence shows that resistance exercise has been less investigated. On the other ...

Number of pages: 105 Category: Physical Education - Sports

Dissertation for receiving a master's degree in the field of physical education in the field of sports physiology. Abstract: Athletes have been continuously searching for solutions to improve their sports performance. One of the methods that can develop sports performance and prepare athletes physically and mentally for sports activities is the use of herbal supplements. The aim ...

Number of pages: 56 Category: Chemical - Petrochemical Engineering

Doctoral Dissertation Proposal Abstract Gaseous pollutants, including volatile organic compounds and aromatic substances, are very harmful and dangerous for the environment and human health. There are many methods such as physical methods, chemical methods and biological methods to remove gaseous pollutants. In the meantime, biological methods are more widely used due to their ...

Number of pages: 79 Category: Biology - Environment

Master's Thesis in Chemical Engineering Abstract of Electrochemical Analysis of Formaldehyde Formaldehyde is one of the organic chemicals that is widely used as a raw material in many industries. Industrial effluents that contain high concentrations of formaldehyde must be treated before entering the environment due to its possible carcinogenic and mutagenic risks. The purpose ...

Number of pages: 80 Category: Chemical - Petrochemical Engineering

Dissertation for Master's Degree in Organic Chemistry. Summary of the research done in this thesis consists of two parts, the first part is the synthesis of the precursor of 4,5-dihydropyrrolo[1,2,3-hi]indole-1,2-dione (compound 1) and one-pot, three-component synthesis of new derivatives of spiro terecates in water-green solvent and in the presence of HMTA catalyst. The second ...

Number of pages: 99 Category: Chemical - Petrochemical Engineering

Dissertation to receive a master's degree in the field of chemical engineering, thermokinetic orientation. Abstract With the increase in the use of fuel cells in the industry and as an on-site application, there is a need to develop production units on the site of hydrogen. In this research, a monolithic catalytic reformer in which autothermal reforming of methane takes place is ...

Number of pages: 107 Category: Electrical Engineering

Master's Thesis in Electrical Engineering, Power 1-1 Introduction Energy supply sources in the last few decades have been from fossil sources, which until recently have been obtained almost cheaply. Cheap energy sources caused that the optimal use of energy and energy recycling were practically not paid much attention. Due to the energy shortage crisis and the sense of danger ...

Number of pages: 118 Category: Chemical - Petrochemical Engineering

Master's Thesis in the field of Chemical Engineering (no orientation) Abstract of the laboratory study of the wear phenomenon of liquid containing sand in pipelines. The studied fluid consists of two phases, liquid and solid. The liquid phase is water, and sand particles form the solid phase. In this research, the parameters affecting the wear rate, including: fluid speed, sand ...

Number of pages: 94 Category: Health - Health

Master's Thesis in Food Safety and Health Abstract: Background: Essential oils and extracts obtained from medicinal plants with antimicrobial, anticancer and antioxidant compounds are of particular importance as new and natural medicinal compounds, both in the field of health and treatment of diseases and protection of raw and processed foods. Objective: To determine the ...

Number of pages: 121 Category: Electronic Engineering

Master of Mechatronics Abstract As you know, the air conditioner is a high consumption device and has a Freon refrigeration cycle. What drew the companies to the production of inverters was to solve the shortcoming of air conditioners in high energy consumption. To improve energy consumption in every part of the industry, one should pay attention to several parameters, it is ...

Number of pages: 109 Category: Electrical Engineering

Master's Thesis of Power Electrical Engineering Abstract The wide network of the power system has very expensive equipment, including generators, breakers, power cables and transformers. The power transformer is the beating heart of this network, which is always subject to various errors under the influence of operational and environmental conditions, and in some cases, it will ...

Number of pages: 88 Category: Chemical - Petrochemical Engineering

Dissertation for receiving the master's degree ""M.Sc."" Chemical engineering trend, thermodynamic and synthetic engineering Abstract In this study, the modeling of dilute acid hydrolysis of walnut green skin as a sample of lignocellulosic material to produce fermentable sugar in the bioethanol process has been studied. The four parameters of temperature, time, acid ...

Number of pages: 76 Category: Biology - Environment

Master's Thesis of Electrical Engineering - Power Abstract Microgrids are networks with small scales at the low voltage level, which are used to supply thermal and electrical loads to small places and places that do not have access to the main power grid. Microgrids are used to supply energy to all types of consumers such as household, industrial and agricultural, and their cost ...

Number of pages: 117 Category: Biology - Environment

Dissertation for Master's Degree (M.Sc.) Orientation: Environment Abstract Based on the studies conducted, there are various processes for desulfurization of naphtha, which determine the method of desulfurization of naphtha, there are very determining parameters, and the type of sulfur compounds and operating temperature and pressure are one of the most important parameters that ...

Number of pages: 91 Category: Facilities - Mechanics

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 ...

Number of pages: 102 Category: Food and Packaging Industries

Dissertation for receiving a master's degree (M.Sc.) in the field of food science and engineering, majoring in food microbiology. Abstract One of the effective ways to improve the quality of bread and baked goods is to optimize the fermentation conditions of the product. In addition to increasing the nutritional value of bread, proper fermentation improves the rheological ...

Number of pages: 96 Category: Facilities - Mechanics

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. ...

Number of pages: 104 Category: Medical Sciences

Dissertation: To obtain a master's degree in nursing (internal-surgical education) Abstract title: The effect of music and aromatherapy on anxiety and pain in cholecystectomy patients: a single-blind clinical trial Introduction: Today, controlling or reducing pain and anxiety after surgery is one of the most important components of post-surgery care. Due to the side effects of ...

Number of pages: 105 Category: Facilities - Mechanics

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 ...

Number of pages: 107 Category: Electronic Engineering

Dissertation for Master's Degree in Electrical-Electronic Engineering (M.Sc) Abstract Sulfur recovery process by Klaus method is one of the most common methods of separating elemental sulfur from acid gas resulting from the sweetening process in gas and oil refineries. But due to the complexity of this process and the multivariable nature of the reaction furnace and the lack of ...

Number of pages: 91 Category: Electronic Engineering

Master's thesis in the field of medical engineering Abstract of estimation of breathing rate from pulse oximeter signal of people suffering from sleeping sickness: review and comparison of different methods Pulse oximetry is a non-invasive and relatively cheap method for monitoring oxygenated hemoglobin in blood, which works based on the different light absorption of oxygenated ...

Number of pages: 147 Category: Facilities - Mechanics

Dissertation for Master's Degree in Energy Conversion Mechanical Engineering Abstract: Fluid propulsion vector orientation has emerged as an important technology for high performance air vehicles. This technology can improve the maneuverability of the aircraft by changing the nozzle flow and its deviation from its axial direction. The purpose of this study is to investigate the ...

Number of pages: 90 Category: Biology - Environment

Master's Thesis of Energy Systems Optimization of Steam Network in Shiraz Oil Refining Company, the costs of power supply and required power of operational processes take up a significant part of the financial resources and costs of every industrial complex, and the continuous supply of required energy is always one of the main concerns of industrial designers and managers. The ...

Number of pages: 81 Category: Facilities - Mechanics

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 ...

Number of pages: 160 Category: Mining Engineering

Dissertation for Master's Degree in Rock Mechanics Abstract: Rock mass blasting ability is a very important feature in explosive designs in mines and construction activities, which is closely related to rock mass system, environmental conditions and blasting system. Among the factors affecting the explosiveness, there are controllable ones, and there are some that are ...

Number of pages: 131 Category: Facilities - Mechanics

Abstract: Research in the field of heat transfer of suspensions with nanometer-sized solid particles in the base fluid has started in the last decade. Recent research in the field of nanofluids has shown that the addition of nanoparticles causes a significant increase in the heat transfer of the suspension. Another common way to improve the thermal performance of devices is to ...

Number of pages: 134 Category: Facilities - Mechanics

Master's thesis in the field of mechanics, specialization: mechanical engineering - energy conversion. Abstract: One of the most important components of fluid transmission systems are control valves, which can be seen in different routes of oil and gas transmission pipelines, etc. In control valves, the most important issue is the property of the flow in order to achieve the ...

Number of pages: 121 Category: Facilities - Mechanics

Dissertation for Master's degree (M.Sc) orientation: energy conversion. Abstract In this research, a study on irreversible absorption refrigeration systems based on internal and external irreversibility is presented with regard to the limited thermal capacities of external tanks. To optimize the system, three scenarios were defined, in which objective functions such as ...

Number of pages: 86 Category: Biology - Environment

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 ...

Number of pages: 128 Category: Facilities - Mechanics

Abstract: Considering the reduction of underground water resources and fossil fuels in today's world and also in Iran, prevention of energy waste and introduction of new methods in the preparation of potable fresh water from sea water will have a special place in the future world. Using methods such as evaporation-distillation methods can be one of these methods. Due to the high ...

Number of pages: 49 Category: Food and Packaging Industries

Dissertation for Master's Degree in Food Science and Technology, Food Technology, Abstract: In addition to changing the organoleptic characteristics of food, oxidation of oils reduces the nutritional value and shelf life of oils and is harmful to the health of consumers due to the production of undesirable compounds in oil. To prevent oxidation, there are several methods, one of ...

Number of pages: 124 Category: Chemical - Petrochemical Engineering

Master's Thesis in Energy Systems Abstract Crude oil distillation unit is one of the most important and critical operational units of any refinery. This unit often requires revision in the design of the structure (Revamping) or making small changes in its existing condition without the need to reduce or increase the basic process devices (Retrofitting) in order to achieve higher ...

Number of pages: 96 Category: Facilities - Mechanics

Master's Thesis, Mechanical Engineering, Energy Conversion, Abstract In this thesis, using the CFD computational fluid dynamics technique, the effect of key parameters such as the effect of secondary inlet pressure on the ejector device, suction ratio, return currents caused by secondary inlet pressure and the effect of all these parameters on the hydrodynamic characteristics of ...

Number of pages: 121 Category: Facilities - Mechanics

Master's Thesis, Energy Conversion Engineering, Abstract: In many processes in the industry, the combination of liquid droplets with gas flow will lead to problems such as corrosion of downstream equipment and loss of expensive liquids. To solve these problems, the phases are separated from each other with the help of a separator. Cyclone separators, as a type of high efficiency ...

Number of pages: 84 Category: Facilities - Mechanics

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 ...

Number of pages: 88 Category: Facilities - Mechanics

Dissertation for M.Sc Master's Degree, Mechanical Engineering-Manufacturing and Production Abstract Nowadays, due to the need for parts with high strength and low weight, the method of manufacturing parts has become important. Hot gas forming [1] is a new process that, due to the elimination of side operations such as welding, the total weight of the parts is reduced, the ...

Number of pages: 179 Category: Electrical Engineering

Dissertation for obtaining a master's degree in the field of electrical engineering, power orientation Abstract Wind energy will be one of the important sources of electricity in future systems. In this work, an overview of wind energy power electronic control is provided and the development of modern power electronic components is also briefly reviewed. The application of power ...

Number of pages: 127 Category: Management

Field: Executive Management Fall 2019 Abstract: The purpose of this research is to investigate the relationship between organizational justice and job performance of employees of Ardabil gas company. Organizational justice, the role of fairness and especially the perception of fairness in the environment