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Number of pages: 92 Category: Civil Engineering

Abstract: Hydraulic jump is one of the amazing hydraulic phenomena that consumes the kinetic energy of water. Hydraulic structures such as relaxation ponds mainly use this important property of hydraulic jump to consume energy downstream of overflows, rapids and valves. The dimensions of these structures are directly dependent on the characteristics of hydraulic jump, therefore, ...

Number of pages: 104 Category: Chemical - Petrochemical Engineering

Master's Thesis in Chemical Engineering (Process Simulation and Control) Abstract Modeling and Simulation of the Electrostatic Desalination Process of Crude Oil by Elham Ariafard The aim of this research is to model the desalination process of crude oil based on the population balance method. For this purpose, the one- and two-stage electrostatic desalination process, which ...

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: 127 Category: Facilities - Mechanics

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 ...

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: 104 Category: Art - Graphics

Master's Thesis of Faculty of Art and Architecture, Department: Carpet (Painting), October 2013 Abstract: Today, in today's advanced and industrialized world, using new methods, it is trying to make Tul products

Number of pages: 142 Category: Art - Graphics

Master's thesis of Ardakan Shahrivar Faculty of Art and Architecture 2013 During the Safavid era, Shah Ismail declared the Shia religion as the official religion of the Safavid dynasty. Continuity and long life of this dynasty and strength

Number of pages: 65 Category: Industrial Engineering

Thesis for the M.Sc degree in wood and paper industry engineering, Mehr 2013 Abstract: In this research, the physical and mechanical properties of nanocomposites obtained from cellulose nanofibers and poly polymers

Number of pages: 122 Category: Educational Sciences

Dissertation for Master's Degree in Educational Management Abstract: The purpose of this research was to investigate the relationship between spiritual intelligence and work motivation of teachers in secondary public schools of Kamiyaran city. The research method is descriptive and correlational. The statistical population includes all teachers in the number of 203 people, and ...

Number of pages: 193 Category: Social Sciences - Sociology

The first chapter of the general research, introduction, active citizenship is one of the issues that can be measured with different indicators, but family and social capital can play an effective role on this issue. Young people who

Number of pages: 123 Category: Geography - Urban Planning

Master's thesis (M.A) in the field of political geography. Sacrifice and martyrdom are valuable concepts in all human societies. All nations respect their devotees, veterans and warriors; But the methods of this sanctity and respect are different. In Islamic teachings, the essence of the culture of self-sacrifice and martyrdom is self-sacrifice, sincerity and intelligent and ...

Number of pages: 173 Category: Social Sciences - Sociology

Dissertation, to receive the master's degree ""M.A"" in the field of TV production. Research abstract: Publishing the teachings of Islam is one of the most essential factors for the survival and continuity of this religion. It is monotheistic. Propagation and information of these concepts and religious foundations is the most important way to publish and promote them. With the ...

Number of pages: 178 Category: Geography - Urban Planning

Dissertation for M.Sc Master's Degree in Remote Sensing and Geographical Information System - Water and Soil Resources Abstract: Urban heat islands are areas of the earth's surface that have a higher temperature than neighboring areas. The spread of this phenomenon varies in space and time. The creation of thermal islands and its spatial and temporal changes are mostly ...

Number of pages: 156 Category: Geography - Urban Planning

Academic Thesis for Master's Degree (M.A) Field: Geography / Tourism Planning The abstract of this research is about the investigation of factors affecting the process of quantitative and qualitative changes in the tourism industry in Lahijan city. Urban tourism is a form of tourism industry that is related to issues such as spending leisure time and the movement of citizens ...

Number of pages: 92 Category: Chemical - Petrochemical Engineering

Master's thesis in the field of chemical engineering Kidney stones are one of the most common diseases in the world, most of its crystals consist of calcium oxalate crystals. Therefore, it has been a long time that the investigation of effective substances in controlling this disease through the control of calcium oxalate crystals has been considered. The purpose of this ...

Number of pages: 139 Category: Geography - Urban Planning

Dissertation for obtaining a master's degree in the field of abstract population from a new point of view, is considered a tool, work tool and the final beneficiary of the development process. This insight does not consider the population as a quantitative category, but also considers its qualitative structure. One of the important topics in this regard is the aging of the ...

Number of pages: 294 Category: Art - Graphics

Dissertation for Master's degree (M.A) Major: Painting Abstract: As the urban space becomes more compact and tangible, disorder and lack of visual identity occur more, and the adverse consequences of the urban patient's face, lack of ease in sending and receiving visual messages from the environment, subsequent stimulation and mental exhaustion and deprivation of peace, lack of ...

Number of pages: 66 Category: Textile Industries

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 ...

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: 181 Category: Civil Engineering

Dissertation for Master's Degree > Direction: Hydraulic Structures Abstract: One of the assumptions that is made to simplify the dynamic analysis of the existing weighted concrete dams is the uniformity of the foundation in terms of physical parameters such as modulus of elasticity and damping. This is despite the fact that, in practice, different geological conditions may ...

Number of pages: 124 Category: Civil Engineering

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 ...

Number of pages: 110 Category: Civil Engineering

Master's thesis in the field of civil engineering, structure orientation. Abstract: In this study, the effect of some effective parameters on the strength of polymer concrete based on epoxy resin, including hardener, filler, and solvent, has been investigated. Rice husk ash and broom stalk ash were used as fillers and acetone-toluene mixture with a ratio of 50-50% was used as a ...

Number of pages: 159 Category: Civil Engineering

The effect of fiber and pozzolanic materials on the mechanical properties of glass fiber reinforced concrete Master's Thesis of Civil-Structural Engineering Abstract The failure and destruction of concrete is highly dependent on the formation of cracks and microcracks. With increasing loading, microcracks are connected and form cracks. In order to solve this problem and also to ...

Number of pages: 94 Category: Civil Engineering

Master's Thesis in Civil-Soil Field Abstract Dense clay layers are used as one of the most common impermeable layers in most geotechnical structures such as earthen dams and municipal and radioactive waste disposal centers. Due to special geotechnical characteristics, these layers are damaged by cracking during their lifetime, these cracks increase the permeability of the layer ...

Number of pages: 155 Category: Geography - Urban Planning

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 ...

Number of pages: 237 Category: Art - Graphics

Master's Thesis of Islamic Arts, metal specialization Abstract: Art suffered stagnation and decline in the early centuries of Islam's arrival in Iran due to the instability of the governments. However, the 3rd to 5th centuries of Hijri were a fruitful era in all cultural aspects including Islamic art. This part of history played a significant role in the formation, expansion and ...

Number of pages: 150 Category: Literature - Persian Language

Dissertation for Master's Degree in Persian Literature M.A. The main goal of writing this thesis is to compile and compile and introduce the words of difficult terms and announcements of Diwan Salman Savji. In this thesis, first, a brief description of the political, religious and literary situation of Salman Savji's era and a description of the biography of contemporary poets ...

Number of pages: 102 Category: Civil Engineering

Master's Thesis (Civil Engineering - Water and Wastewater Engineering) Abstract: In this study, ram impact pump modeling was done by the software that was prepared. This software finds the outputs of the HAMMER software as input and by obtaining other information (including the pumping height, etc.) it calculates the amount of pumped water every time the valve is suddenly turned ...

Number of pages: 141 Category: Civil Engineering

Master thesis M.Sc. Discipline: Civil Engineering, Orientation: Hydraulic Structures. Abstract River containment is generally done by dams and similar structures. The flow passing through these structures has a significant potential for erosion and scouring of susceptible beds. Relaxation ponds are designed and built mainly for the purpose of depleting flow energy and ...

Number of pages: 138 Category: Literature - Persian Language

Academic Thesis for Master's Degree in Persian Language and Literature Abstract: Policy letters, like any other literary phenomenon, are effective in reflecting the fundamental structure of society. Policy letters are a type of literature that are written in a special framework based on the conditions and social environment and the internal characteristics of the people who ...

Number of pages: 131 Category: Civil Engineering

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 ...

Number of pages: 154 Category: Civil Engineering

Master's Thesis of Water Engineering - Water Resources Management Abstract The advance of salt water in fresh water aquifers is not limited to the islands and coasts of oceans, seas and salt lakes, but it is possible for salt water aquifers to advance through deserts, swamps and salt water pits in the adjacent fresh water aquifers, making it salty and unusable in critical ...

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: 138 Category: Literature - Persian Language

Educational Department of Persian Language and Literature. Thesis for obtaining a master's degree in the field of Persian language and literature. Abstract: Policies, like any other literary phenomenon, are effective in reflecting the basic structures of society. Policies are a type of literature that are written in a special framework based on the social conditions and ...

Number of pages: 87 Category: Civil Engineering

Master's thesis in the field of civil engineering, structure orientation Alkaline Aggregate Reaction [1] (AAR), is a chemical reaction that occurs in some concrete structures. (AAR) is a reaction between alkaline fluids in the pores and silica aggregates. Concrete failure, including expansion and cracking due to the alkaline reaction of aggregates, is of particular importance. ...

Number of pages: 105 Category: Civil Engineering

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 ...

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: 119 Category: Chemical - Petrochemical Engineering

Master's Thesis in Nano Chemical Engineering Abstract The aim of this study is to separate cationic polyacrylamide from the waste water of Prodeh Tabas coal washing plant using the polymer membrane filtration process. The primary membrane was prepared using polyacrylonitrile (PAN) by phase inversion process, and then they were prepared using hydrolysis as chemical modification ...

Number of pages: 95 Category: Chemical - Petrochemical Engineering

Master's thesis in the field of chemical engineering (simulation and process control) abstract design of the control system for the fluidized bed reactor for the production of linear light polyethylene of the LLDPE unit of Jam Petrochemical under the license of Basel and Spherilene technology with an annual production capacity of 300,000 tons of product is one of the largest ...

Number of pages: 175 Category: Literature - Persian Language

An academic thesis for obtaining a master's degree (M.A)) - Abstract Structural stylistics is one of the new schools that is used today for scientific and accurate knowledge and to achieve the unique characteristics of literary works as well as comparison between these works. This treatise has analyzed four collections of poems written by three poets from the east of Gilan. A ...

Number of pages: 103 Category: Chemical - Petrochemical Engineering

Master's thesis in the field of chemical engineering, abstract of the design of the Driso ring base and the use of hydrocarbon solvent in the dehumidification process in Farashband refinery, water vapor is one of the most important impurities in the flow of natural gas. Usually, the water vapor itself is not a problem, but instead the liquid or solid phase that forms when the ...

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: 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: 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: 91 Category: Chemical - Petrochemical Engineering

Master's thesis in the field of chemical engineering, abstract of the laboratory study of iron oxide production on a microstructural scale using the precipitation method with supercritical anti-solvent by: One of the problems of cement used in oil wells, which are used to connect wall pipes and well walls, is that these cements do not have the desired resistance against high ...

Number of pages: 103 Category: Chemical - Petrochemical Engineering

A master's thesis in the field of chemical engineering. Abstract of the laboratory study of the wear phenomenon of gas containing sand and liquid droplets in pipelines. For this purpose, a pipeline test device including: vertical and horizontal pipelines and various connections has been made. The studied fluid consists of three phases: gas, liquid and solid. The gas phase is ...

Number of pages: 101 Category: Health - Health

Dissertation for Master's Degree in Food Safety and Health Abstract Introduction: In this research, according to the antimicrobial property and resistance of titanium dioxide-based silver nanoparticle packages to the penetration of gases, including oxygen, the effect of these packages on the fungal flora of consumer breads was compared with common polyethylene packages. This ...

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: 129 Category: Chemical - Petrochemical Engineering

Dissertation for Master's Degree in Chemical Engineering, Biotechnology, Abstract: Microbial proteases are among the most important hydrolyzing enzymes, which account for 60% of the global market of industrial enzymes. In this research, synthesis of protease enzyme in solid state fermentation process using Bacillus bacteria. licheniformis was investigated. Various agricultural ...

Number of pages: 95 Category: Medical Sciences

Dissertation to receive Ph.D. Persian Summary Otostegia persica is one of the Lamiaceae (mint) plants, which in traditional medicine is used to treat malaria, reduce blood sugar and blood pressure, and relieve S fever. The name of this plant in Persian culture is ""golder"". This genus has 3 species of perennial herbaceous plants in Iran: Otostegia aucheri, Otostegia micchauxii, ...

Number of pages: 101 Category: Chemical - Petrochemical Engineering

Master's Thesis in the field of Nano Chemical Engineering Abstract Removal of phenol from industrial effluents using nanotechnology In this research, the photocatalytic removal of phenol as a model of organic pollutant in a fluidized bed reactor under ultraviolet and visible radiations has been studied. The effects of important parameters such as pH, catalyst concentration, ...

Number of pages: 90 Category: Chemical - Petrochemical Engineering

Master's degree thesis in the field of chemical engineering, thermokinetic and catalyst orientation. Abstract The purpose of this research is to estimate the electrical conductivity of natural waters based on modern mathematical methods. To achieve this, the waters of the Karaj and Jajrud rivers are considered as special cases. For this purpose, 20 sampling stations were ...

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: 79 Category: Chemical - Petrochemical Engineering

Dissertation Chemistry for Master's Degree Abstract Acrylic-based pressure-sensitive adhesives are more expensive than rubber-based adhesives, but they have a longer life and resistance to high temperatures, chemicals, UV rays, solvents, light, softeners, and the environment. Modification of acrylic pressure-sensitive adhesives is useful for improving adhesion properties. In ...

Number of pages: 122 Category: Physics

Dissertation for receiving a master's degree in chemical engineering, advanced orientation. Abstract The limitation of heat transfer fluids in various industries due to their poor thermal conductivity has caused the improvement of the heat transfer of working fluids to be considered as a new method of advanced heat transfer. So that the idea of ??dispersing solid particles in ...

Number of pages: 87 Category: Chemical - Petrochemical Engineering

Master's thesis in the field of chemical engineering, abstract of the effect of additives on crystal morphology in the crystallization process of calcium oxalate. Kidney stones are one of the most common diseases in the world, and most of its crystals are composed of calcium oxalate crystals. Therefore, it has been a long time that the investigation of effective substances in ...

Number of pages: 19 Category: Research Methodology

Mechanical Engineering Master's Thesis Proposed Design - Introduction The use of fibers in concrete started about 50 years ago and day by day their use in various fields has increased. Adding fibers to the mixing design improves the mechanical properties of concrete and the behavior of the structure after cracking. It also increases the softness and malleability of the section. ...

Number of pages: 98 Category: Health - Health

Introduction summary: Marital satisfaction indicates the strength of the family system; It increases physical and mental health, economic progress, job satisfaction and satisfaction with life as a whole. Considering that nurses are directly and indirectly exposed to numerous physical and psychological injuries due to exposure to various stressors at work to achieve the goal of ...

Number of pages: 60 Category: Medical Sciences

Dissertation for the degree of Doctor of General Medicine Title: Investigating the rate and causes of episiotomy in Yazidi and Al-Zahra Hospital Qom in 2013 Authors: Dr. Ruqieh Ahangari - Bahareh Karimi Hasnijeh Abstract: Introduction: Considering the complications such as infection, pain, hematoma, 3rd and 4th degree lacerations and that episiotomy seems to be more than ...

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: 71 Category: Chemical - Petrochemical Engineering

Dissertation for Master's Degree in Analytical Chemistry Abstract In this study, a new scinometric film method was used to measure dichromate ion in aqueous media using chromophore 1 and 5-diphenylcarbazide (DPC). 5-1-Diphenylcarbazide was used as a complexing agent for the measurement of dichromate ion. As a result of entering dichromate into the structure of the polymer film, ...

Number of pages: 167 Category: Biology - Environment

Dissertation for Master's Degree in Mechanical Engineering Abstract: Nowadays, due to the increase in population in big cities, building high-rise buildings and residential towers may seem inevitable. But in locating these types of buildings and placing them together, a series of environmental requirements must be observed. In this thesis, an attempt has been made to re-evaluate ...

Number of pages: 144 Category: Medical Sciences

Dissertation to receive a Ph.D. in Pharmacy Persian Summary Simvastatin with the brand name Zocor is a drug that is widely used in the treatment of hypercholesterolemia. Simvastatin has a poor solubility in water which reduces its therapeutic benefit, drug solubility behavior remains one of the challenging aspects in formulation development. Considering that many drugs have ...

Number of pages: 99 Category: Facilities - Mechanics

Dissertation for the degree of Master of Mechatronics M.SC. Abstract: The subject of this research is the design and simulation of data integration in a radar network that has overlapping. Data fusion means combining the output data of dissimilar radar sensors that are different in terms of accuracy in ranging and angle measurement. These sensors are installed in a row in front ...

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: 70 Category: Electronic Engineering

Dissertation for Master's Degree in Medical Engineering Abstract Cardiac arrhythmias are one of the heart diseases that should be taken care of in patients admitted to the intensive care unit. Smartening the process of accurate diagnosis of heart diseases is a problem that has attracted the attention of researchers for years. In this research, an efficient method for selecting ...

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: 137 Category: Electronic Engineering

Introduction Flexible Power Transmission Networks (FACTS[1]), is one of the aspects of the electronic revolution that is happening in all fields of electrical energy. The concept of FACTS was first proposed in 1988 by Hingorani. In addition to the advantages of fast and reliable switching, the range of semiconductor power devices provides opportunities to value electrical energy ...

Number of pages: 84 Category: Agricultural Engineering

Thesis for obtaining a master's degree in the field: agricultural engineering, horticultural sciences, specialization: physiology and breeding of fruit trees. Abstract: Drought stress is one of the most important factors limiting the growth of plants in arid and semi-arid regions of the world, such as Iran. The importance of using water resources and the occurrence of recent ...

Number of pages: 196 Category: Facilities - Mechanics

Master's Thesis in Mechanical Engineering, Applied Design 1-1-Introduction All humans know that the heart is a vital organ in the human body, so we cannot live without it. But with a purely mechanical view, the heart is just a pump; A very complex and important pump; And in terms of being a pump, like all pumps, there is a possibility of clogging, failure or needing to be ...

Number of pages: 106 Category: Facilities - Mechanics

Master's thesis in the field of mechanical engineering - energy conversion trend. Abstract Numerical simulation of a flow measurement microsensor in a real human aorta model. Arterial diseases, especially arteriosclerosis and vasodilation, are among the most important causes of sudden death in the world. There are different methods for diagnosing these diseases, and in this ...

Number of pages: 69 Category: Philosophy - Ethics

A master's thesis in the field of Abrahamic religions, the abstract of the Maccabean movement was a movement that the Jews created in Judea by defeating the Seleucid kings, the successors of Alexander the Great. Alexander sought to spread Greek culture in all parts of the lands under his control. Therefore, simultaneously with the conquests of lands such as Iran, Asia Minor, ...

Number of pages: 174 Category: Agricultural Engineering

Dissertation for the M.Sc. Field of agriculture, the effect of water stress, zeolite and salicylic acid foliar spraying on some agronomic and physiological traits of spring safflower 1: General: 1-1: Introduction: Environmental stresses are the most important factors that reduce the yield of agricultural products in the world. If environmental stresses did not occur, the actual ...

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: 154 Category: Biology - Environment

Doctoral Dissertation on Energy Conversion Abstract One of the most important issues in internal combustion engines is heat transfer in them; Because almost a third of the energy produced inside the combustion chamber is removed through engine cooling. The heat transfer of internal combustion engines is important from various aspects, including the protection of materials used ...

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: 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: 103 Category: Facilities - Mechanics

Master's thesis in the field of mechanical engineering in the field of energy conversion. Abstract The increasing use of fossil resources, the increase of greenhouse gases and the strict standards of car pollutants are the main incentive to use biodiesels as an alternative fuel for diesel engines. Air pollution, global warming, limited and expensive fossil resources are among ...

Number of pages: 55 Category: Agricultural Engineering

Abstract This experiment was conducted in order to investigate the effect of different levels of nitrogen fertilizer (50, 100, 150 and 200 kg/ha) and foliar application of low consumption elements zinc, boron and the mutual effects of zinc and boron on the yield of sesame, a local cultivar of Peldasht, at Khoi Agricultural and Natural Resources Research Station in 2013 crop ...

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 ...