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Master's thesis in the field of natural geography, climatology and environmental planning, abstract human civilization is based on the stability of climatic conditions, therefore climate change can be considered a threat to human civilization. In recent years, climate scientists have tried to trace these changes for some climatic elements, the most important of which is ...

Abstract Today, rice is the main food of more than half of the world's population and rice is cultivated in five continents and more than forty countries. Rice is one of the main meals of the people of Iran, until 1340, Iran exported more or less rice annually, and since then, as a result of the improvement of the economic situation of the people and the rapid increase of the ...

Dissertation for M.Sc. Natural Geography-Climate Chapter 1 General Research Introduction Tourism is one of the largest industries in the world, which has a fast growth. For many areas, tourism is the most important source of income, and for other areas, the economic return from tourism is very high (Masoompour, Khosh-Akhlaq). According to the forecast of the World Tourism ...

Dissertation to receive a master's degree in the field of meteorology with an urban orientation. Abstract: The researches conducted in the world mainly indicate a gradual increase in the average temperature. Today, the trend of freezing temperatures is one of the most important climate parameters that are evaluated to prove climate change in a region. Analyzing the trend of the ...

Dissertation for receiving a master's degree (M.A) in the field of geography and climatology in environmental planning. Abstract Due to the significant role of snow cover in the hydrological cycle, it seems necessary to investigate the characteristics of snow cover (snow cover level) with a high spatial and temporal resolution. The measurement of this parameter is generally done ...

Dissertation for obtaining a master's degree in electrical engineering, electronics, abstract, accurate measurement and control of temperature in industrial and research systems is of particular importance, and the correct operation of some industrial and laboratory tools is possible only in a certain location with a small number of channels (maximum 8 channels). Therefore, the ...

Master's degree thesis, field: Chemical Engineering Abstract: In this research, the absorption of methyl orange dye, which is one of the most widely used dyes in the textile industry, by polypyrrole adsorbent based on polyvinyl alcohol has been investigated. The tests were performed in a discontinuous system using a colored solution with a concentration of 40 ppm. After ...

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 ...

Master's degree in electrical engineering, electronics, abstract, accurate measurement and control of temperature in industrial and research systems is of particular importance, and the correct operation of some industrial and laboratory tools is possible only in a specific location with a small number of channels (maximum 8 channels). Therefore, the decision was made to build a ...

Dissertation for Master's Degree in Plant Production Engineering - Horticultural Science Orientation Abstract This research has been done for the first time in the world to show the effects of low temperatures and its duration on the germination percentage and the amount of seed vigor. To perform this test, pollen grains of 3 early flowering, medium flowering and late flowering ...

Dissertation for Master's Degree (M.Sc) Abstract Chrysanthemum (Chrysanthemum morifolum L.) is one of the most important cut flowers in the world, which today ranks second in the world after roses in terms of economy and cultivation. One of the important problems of this flower is vascular blockage and disruption of the water balance. For this purpose, a study based on a ...

Dissertation for Master's Degree in Horticulture-Fruit Science Abstract After being separated from the mother plant, the fruit is alive and breathes and undergoes significant changes after harvesting. The storage period of fruits can be increased by optimizing environmental conditions, minimizing mechanical damage and using beneficial compounds such as gibberellins and ...

Master's thesis in the field of mechanical engineering, energy conversion trend. Abstract: Considering that heat transfer is widely used in various fields of science, it is necessary to use wide recessed or raised surfaces due to physical and spatial limitations in electrical systems. The main purpose of using these surfaces is to increase heat transfer by increasing the ...

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 ...

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 ...

Thesis for receiving a master's degree in the field of architecture 06/93 abstract Today, as a result of the application of massification and downsizing policy in large urban societies, traditional housing has lost its meaning and concept

Dissertation for receiving a master's degree in the field of natural geography in the field of climate change. Abstract: With the process of global warming and water resources becoming more valuable due to population growth and the needs of industries and agriculture, numerous investigations have been conducted in line with water conservation and protection programs in line with ...

Dissertation for Master's Degree (M.A) in the field of Natural Geography, Climate Hazards Abstract Dust storms are destructive weather phenomena that cause irreparable damage to urban areas, fields, facilities, roads, etc. every year. This phenomenon is affected by special weather conditions, and if the mechanism of its development and expansion is known, it is possible to ...

Master's degree thesis in the field of geography and urban planning summarizes the physical development and growth of Iranian cities until a few decades ago, coordinated and appropriate to the needs of the urban society. With the emergence of new developments, cities quickly accepted changes and transformations. These transformations have been in the form of rapid population ...

Thesis for obtaining a master's degree in the field: Geography, specialization: Climatology in environmental planning. Abstract: In this research, the monitoring and zoning of drought as well as the investigation of its different dimensions in the country of Iran using statistics and information related to precipitation and temperature for 30 years (1981-2010) of the country's ...

Dissertation for Master's Degree (M.Sc) Field: Natural Geography - Applied Climatology Abstract Due to its location in a special geographical location, topographic conditions and climatic systems affecting the region, the city of Kavus has a relatively cold climate. So that the air temperature in the coldest month of the year reaches 9.2 degrees Celsius and has the highest ...

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 ...

Master's thesis in natural geography, climatological orientation in environmental planning, abstract: the abundance of altitudes and extreme changes in altitude, and of course wide fluctuations in temperature, humidity, annual precipitation, etc., have caused Kohgiluyeh and Boyer Ahmad provinces, located in the southwestern half of the country, to be a bridge between the ...

Dissertation for obtaining a master's degree in the field: natural geography, orientation: climate in environmental planning. Abstract: Atmospheric precipitation is one of the most important meteorological factors because all water resources in the region are supplied through these precipitations. Precipitation studies are of great importance in terms of natural and human ...

Dissertation for receiving a master's degree (M.A.) major: geography and tourism planning. Iran, with a variety of important tourist attractions, is one of the ten most touristic countries in the world and the fifth ecotourism country in the world, which can play a very important role in economic, social, and cultural terms. The city of Sanghar Kaliati is located in the ...

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 ...

Dissertation for obtaining a master's degree in electrical engineering, electronics, abstract. The many advantages of on-site calibration compared to calibration in the calibration center have led to the formation of mobile calibration teams in all companies that work in the field of calibration. Therefore, in recent years, the design of standards and equipment suitable for ...

Master's thesis in chemical engineering field, vapor pressure is an important thermodynamic property in process equipment design and chemical engineering unit operation. Therefore, experimental vapor pressure data that cover the entire range of vapor pressure are very valuable, but due to the lack of accurate measurements for the vapor pressure of some materials near the triple ...

Dissertation for master's degree, specialization: Power, Power, Abstract One of the important design challenges in wireless sensor networks (WSN) is to prolong the lifetime of the system (node), while achieving an acceptable quality of service for the applications. Extending the life of the node is directly related to reducing energy consumption. In WSN, each sensor node works ...

Dissertation for M.Sc. Abstract A wireless sensor network is a network consisting of many small nodes. The node receives information about the environment through sensors. The energy consumption of the nodes is usually provided by batteries, which in most cases cannot be replaced. Therefore, the consumption power of nodes is an important issue in these networks. And it is very ...

Master's Thesis in Electrical Engineering (Communication System) Abstract: Optimizing Node Placement in Different Environments for Broadband Sensor Networks Locator Systems are systems that can detect the location of an object in a space. Such systems usually detect the distance between two objects by using radio communication and determine the location of the object in the area ...

Dissertation for Master's Degree in Civil Engineering Majoring in Environmental Engineering Abstract In this research, the effect of biological reactions on the removal of organic substances in wastewater during transfer from production sources to the treatment plant in conventional networks and new small diameter networks was investigated. For this purpose, a part of these ...

Dissertation for Master's Degree in Civil Engineering, Soil and Foundation Mechanics Abstract: Since many structures are built in dense urban areas, there is an increasing need to build buildings and geotechnical structures on soft clay soils. Clay soils usually show significant creep deformation. Although a lot of research has been done on the creep behavior of natural clay, ...

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 ...

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 ...

Master's thesis in the field of structural engineering. Abstract: The increase in vulnerability caused by earthquakes and the large number of earthquake casualties caused by structures and houses that are weak in terms of construction forces people to conduct studies to reduce these risks and damages. Studies such as severe earth movement and seismic hazards related to it play ...

Dissertation for Master's Degree in Civil Engineering - Abstract Hydraulic structures in high dams of spillways, as one of the dependent hydraulic structures, have the important role of discharging the incoming floods into the dam reservoir with sufficient safety in free flow or under pressure downstream. In tunnel overflows where the flow is at a high speed and often under ...

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 ...

Dissertation for Master's Degree in Mechatronics Abstract In this thesis, a phase-locked loop is designed based on micro-electromechanical systems. The loop system has a feedback phase lock that compares the input phase with the output phase. This comparison is done by a phase detector. Phase detector is a circuit whose average output voltage is linearly proportional to the ...

Master's thesis abstract shows the necessity of having a healthy environment and raising the health level of the society, the need to have proper planning to reduce the sources of air pollutants production and predicting these pollutants to prevent its harmful effects is inevitable. Prediction of pollutants can be useful in air pollution management and control. In this research, ...

Master's Thesis in Computer-Software (M.Sc) Abstract The quality of service in wireless sensor networks is very different compared to traditional networks. Some of the parameters that are used in evaluating the quality of service in these networks are: network coverage, optimal number of active nodes in the network, network lifetime and energy consumption. In this thesis, three ...

Master's Thesis of Civil-Environmental Engineering Abstract Garbage is one of the environmental pollutants that cause many problems such as the spread of pollution in water, air and soil and transmission to humans and animals directly or indirectly. Today, with the ever-increasing expansion of urban and industrial societies, we are witnessing the widening of the amount of these ...

Master's Thesis of Electrical Engineering - Power Abstract: Induction motor condition monitoring is an absolutely necessary and important technology to detect various defects at the initial stage. which can prevent the spread of unexpected defects in the initial stages. Approximately 30-40% of induction motor defects are related to stator defects. In this thesis, a comprehensive ...

Electrical-Electronics Engineering Master's Thesis Abstract In this thesis, we have used graphene nano-ribbons as an active layer of a solar cell for the first time. To simulate this cell, the non-equilibrium Green's function method was used in the mode space, and the effect of electron-photon interactions was calculated by means of Born's self-consistent approximation. To ...

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. ...

Dissertation for obtaining a master's degree in chemistry, fluoride has been known as a toxic ion for many years. The main source of fluoride in aqueous solutions is minerals containing fluoride and the industrial activities of factories. According to the report of the Environmental Protection Organization, the amount of fluoride more than 1 mg/liter causes various diseases. In ...

Master's thesis in the field of civil engineering - hydraulic structures Abstract: Rivers are one of the most important and common sources of drinking, agricultural and industrial water supply. These resources have many qualitative fluctuations due to passing through different platforms and direct connection with the surrounding environment. Therefore, predicting the quality of ...

Physical Education and Sports Science Thesis for Master's Degree Abstract: Background and Objective: The purpose of this study is to determine the effect of 8 weeks of intense training with and without water extract (red and black oleander) on plasma and liver neuropeptide w levels, cortisol and plasma T4 hormones in male rats. Materials and methods: In this experimental study, ...

Master's thesis in the field of inorganic chemistry Abstract In this thesis, we investigate the anticancer diamine ruthenium complexes by computational chemistry, which examines the following: energy analysis, which examines the absolute energy value, dipole moment, isotropic and anisotropic polarizability of the complex. 2- The analysis of the frontal orbitals, the energy of ...

Thesis for Master's degree in the field: Chemical Engineering Abstract Today, tea is one of the most popular drinks among the people of the world, especially in Iran, that's why drying tea leaves is essential for long-term storage. In this research, both a tea leaf and a pile of it were examined and dried. Green tea leaves were dried in the temperature range of 35 to 55 degrees ...

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 ...

Dissertation for M.Sc degree, field: chemical engineering, orientation: biotechnology, research method: first, the surface of the gold electrode was coated with nickel and cobalt salt in suitable conditions, then the standard solution of atrazine poison was placed in contact with the modified electrode, and after optimizing a series of mechanical and chemical parameters, its ...

Abstract Gas hydrates are a group of solid host compounds that play an important role in many processes such as gas storage, transfer and separation, heterogeneous catalysis and water purification. These crystals are formed at a temperature higher than the freezing point of water and high pressure. There are different methods to calculate the free energy difference: 1) ...

Master's thesis in the field of chemical engineering, abstract of simulation and optimization of biological reactor producing butanol, semi-continuous fermentation is an efficient and beneficial method to produce valuable metabolic products such as biofuels. Mathematical modeling of semi-continuous bioreactors is a very difficult and complex issue due to the transitory and ...

Master's Thesis of Civil Engineering - Water (M.Sc) Abstract Diagnosing the pattern of drought occurrence and its monitoring is important in determining the optimal approach to water resources management, especially regarding the water supply sources of big cities that are exposed to drought events from a climatic point of view. In the meantime, the city of Tehran is exposed to ...

Dissertation: To obtain a master's degree in medical librarianship and information. Summary: Introduction: Work and man are two main and inseparable parts of existence that must be planned in a way that fits each other. The lack of fit between human capabilities and the type of work he does causes many problems. In this regard, the science of ergonomics examines the health of ...

In order to obtain a master's degree in chemical engineering, abstract freezing of fans in operational units, including the hydrogen unit of Imam Khomeini Shazand Refinery in the cold seasons of the year is one of the important problems in this refinery. In order to provide a suitable solution to this problem, we must have a suitable estimate of the fan outlet temperature. The ...

Master's Thesis (M.Sc.) Direction: Process Design Abstract Currently, membranes have found a special place in different separation industries and have wide applications in different fields of separation, including liquid solutions and different gases. Membrane technology is one of the most widely used technologies in today's industry, whose field of application is wide ranging ...

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 ...

Dissertation for M.Sc)) Electrical Orientation - Power Abstract Common-mode voltages and currents are generated due to parasitic capacitance between solar cells and their frame, which is usually grounded. These capacities are usually modeled as capacitors between the negative terminal of the solar cell and ground. In solar cells that are connected to the grid through a ...

Master's thesis in the field: Chemical Engineering Abstract In this research, a comprehensive two-dimensional model based on the Finite Element Method (FEM) is proposed for modeling gas-solvent membrane contactors to remove carbon dioxide[1] from synthesis gas. Aqueous solution of monoethanolamine has been used as absorbent solvent stream and CO2/N2 gas mixture as gas stream. ...

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 ...

Master's thesis in the field of chemical nanoengineering Abstract The synthesis of silicon dioxide nanoparticles from silicon oil waste using the synthesis method of silicon dioxide nanoparticles [1] has many industrial applications. The industrial use of these particles in traditional fields as well as new fields is expanding, for which new applications are continuously found. ...

Dissertation for receiving a master's degree, specialization: microbiology. Abstract Staphylococcus aureus is considered as the third most important cause of food-borne diseases. Milk is the primary source of Staphylococcus aureus and milk products are a known source of staphylococcal poisoning. This study was conducted to determine the prevalence of Staphylococcus aureus in ...

Doctoral Dissertation in Chemical Engineering-Biotechnology Abstract The purpose of this study was to produce polyhydroxyalkanoate biopolymer using glucose, fructose, molasses and whey carbon sources by microorganisms Azohydromonas lata DSMZ 1123, Azotobacterbeijerinckii DSMZ 1041, Cupriavidus necator DSMZ 545, Hydrogenophaga pseudoflava DSMZ 1034. In the first stage, to screen ...

Dissertation for M.S.c Master's Degree Orientation: Applied Abstract: In recent years, semi-conducting nanoparticles have attracted a lot of attention due to their electrical and mechanical properties, which result from limited quantum effects compared to their counterpart materials. Among semiconductor nanoparticles, ZnO nanoparticles have higher efficiency. To achieve higher ...

Dissertation for Master's degree (M.Sc) Major: Organic Chemistry Abstract Carbon-carbon bond formation is very important in organic chemistry. One of the reactions that lead to the formation of this bond is the Novnagel condensation reaction. The products of this reaction have wide applications, including in the pharmaceutical, paint, polymer and other industries. . . are In ...

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 ...

Master's Thesis in Chemical Engineering Abstract Vapor pressure is an important thermodynamic property in process equipment design and chemical engineering unit operation. Therefore, experimental vapor pressure data that cover the entire range of vapor pressure are very valuable, but due to the lack of accurate measurements for the vapor pressure of some materials near the ...

Master's thesis in the field of mining chemistry Abstract: In this study, the effect of amide substitution on the surface of graphene oxide was studied. Two amines were chosen to change the contact surface and absorption rate. of a linear diamine such as ethylenediamine[1] and cyclic amine 6-aminouracil[2] with two different characteristics were evaluated. After the synthesis ...

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 ...

Dissertation for Master's Degree in Organic Chemistry Abstract: The new works carried out in this thesis include the condensation reaction of arylglyoxals prepared during the oxidation of acetophenones related to selenium dioxide with 1,2-diaminobenzene, 2,3-diaminomalonitrile, 2,3-diaminopyridine and 4-nitro-1,2-diaminobenzene in order to prepare quinoxalines and the ...

Dissertation for Master's Degree in Organic Chemistry Abstract of the research done in this thesis consists of two parts, the first part includes the one-pot synthesis of new spiro compounds using 4,5,5-trimethyl 4,5-dihydropyrrolo{1,2,3-hi}indole 1,2-dione with aromatic amines and vectors. The second part includes the synthesis of new derivatives of spiro compounds using ...

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 ...

A master's thesis in the field of chemical engineering, abstract of biodiesel production from microalgae by supercritical carbon dioxide extraction method. In this research, different stages of biodiesel production from Chlorella vulgaris microalgae, especially the stage of oil extraction from it, were experimentally studied. The method of microalgae cultivation was selected ...

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 ...

Academic thesis for obtaining a master's degree in electrical engineering, electronics orientation Abstract In this thesis, firstly, the introduction of graphene, its manufacturing method, advantages and applications in field effect transistors and the conducted research will be extracted and examined, then we will have an overview of the structure of field effect transistors ...

Master's Thesis in the field of power, power electronics, power electronics, abstract. Distributed generation power plants have a production capacity of several kilowatts to 10 megawatts, which are used to produce electric energy in places close to consumers. Among their types, we can mention solar cells, fuel cells, micro turbines, wind power plants, etc. If these power plants ...

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 ...

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 ...