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Number of pages: 135 Category: Electronic Engineering

Abstract In recent years, there have been vast advances in the field of image sensors and digital imaging systems, but still theoretical and practical limitations affect the resolution of images taken with these cameras. Super resolution techniques have been developed in recent years to overcome these limitations. These techniques create a higher resolution image by using one or ...

Number of pages: 137 Category: Electronic Engineering

Master's Thesis for Master's Degree Abstract In recent years, there have been vast advances in the field of image sensors and digital imaging systems, but still theoretical and practical limitations affect the resolution of images taken with these cameras. Super resolution techniques have been developed in recent years to overcome these limitations. These techniques create a ...

Number of pages: 60 Category: Chemical - Petrochemical Engineering

Master's Thesis / Inorganic Chemistry Abstract Considering the application of nonlinear optical properties (NLO) in technologies such as lasers, remote communication, photovoltaic cells, information processing and holography and the mineral diversity of these materials, we started a research in this field and focused on borazine-containing dyes. Our main goal in this research is ...

Number of pages: 159 Category: Electronic Engineering

Dissertation for receiving a master's degree in electrical engineering, electronics orientation. Chaos theory was founded at the end of the 20th century by Lorentz. Chaos science investigates non-linear systems and their behavior in different conditions. Since the systems around us are mostly non-linear, by creating feedback in them, they may show chaotic behavior, so chaos ...

Number of pages: 71 Category: Electronic Engineering

Master's Thesis Field: Electricity Major: Electronics Chapter 1 Basics and Generalities Introduction Today, biosensors are used in various fields such as medicine, chemical industry, food industry, environment and the production of medical-health products [1]. In clinical and medical environments, it is very necessary to have tools to diagnose diseases. The development of ...

Number of pages: 155 Category: Electrical Engineering

Dissertation for receiving a master's degree in electrical engineering, electronics orientation. Chaos theory was founded at the end of the 20th century by Lorentz. Chaos science investigates non-linear systems and their behavior in different conditions. Since the systems around us are mostly non-linear, by creating feedback in them, they may show chaotic behavior, so chaos ...

Number of pages: 134 Category: Electronic Engineering

Master's Thesis Field: Electricity Major: Electronics Chapter 1 Basics and Generalities 1-1 Introduction Today, biosensors are used in various fields such as medicine, chemical industry, food industry, environment and the production of pharmaceutical-health products[1]. In clinical and medical environments, it is very necessary to have tools to diagnose diseases. The development ...

Number of pages: 81 Category: Electronic Engineering

Master's Thesis in the field of electrical engineering, electronics, abstract of the time response and circuit model of an optical detector based on the structure of graphene layers-graphene nanoribbon-graphene layers. The purpose of this research is to present the time response of an optical detector based on graphene layers and graphene nanoribbon. The need to increase the ...

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: 229 Category: Architectural Engineering

Master's Thesis (M.A) in the field of architectural engineering for the academic year 2011-2018 Abstract: The similarity between cinema and architecture in terms of concept, idea development and the process of producing a work, can be read into these two artistic categories.

Number of pages: 84 Category: Art - Graphics

Master's Thesis of Ardakan Faculty of Art and Architecture, Department: Carpets, November 2013 Abstract: Some contemporary (mostly commercial) carpets have defects in color, which are checked by a restorer upon the customer's request.

Number of pages: 173 Category: Industrial Engineering

Dissertation for Master's Degree in Polymer Industry Engineering April 2013 Abstract Nowadays, the topic of energy and energy saving in all fields, even in homes, is one of the most important.

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: 121 Category: Geography - Urban Planning

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 ...

Number of pages: 91 Category: Geography - Urban Planning

Dissertation for M.A Master's Degree Field: Natural Geography Major: Climatology in Environmental Planning Abstract Climate is one of the most important basic factors for identifying the natural areas of the earth, among the climatic elements, precipitation is of great importance. By examining the rainfall areas, it is possible to identify the potential of the country's water ...

Number of pages: 149 Category: Geography - Urban Planning

In order to receive a master's degree in geography and climatology in environmental planning, in order to identify the synoptic patterns leading to torrential rain, first, daily rainfall equal to 20 mm and more during the statistical period of 1991 to 2010 was determined as the basis for analyzing the torrent for the synoptic stations of Astara, Anzali, Rasht and Ramsar with the ...

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: 116 Category: Educational Sciences

Dissertation for Master's Degree in Educational Planning Abstract: Information technology is an emerging and progressing science that every year we witness the presence of this science in various fields and important news about the influence of this science in human life. The presence of knowledge and education is one of these fields that has not been without the impact of ...

Number of pages: 91 Category: Computer Engineering

Master's Thesis in Software Abstract Today, the world of communication is developing at an indescribable speed, and the Internet plays a significant role in this evolution. Mobile users want access to the Internet and wireless networks have provided this possibility. {Formatting Citation} Establishing secure communication and user security and maintaining service quality[1] at ...

Number of pages: 112 Category: Computer Engineering

Dissertation for Master's Degree in Information Technology Engineering - Computer Networks Major Abstract Wireless surveillance networks are an important branch of wireless multimedia sensor networks with some unique features. The quality of service in wireless surveillance networks is closely related to the packet loss rate. Occurrence of congestion is one of the main and most ...

Number of pages: 104 Category: Computer Engineering

Master's thesis in the field of computer engineering (artificial intelligence) abstract of various image processing techniques are widely used in the field of dentistry. Among these applications, we can mention the identification based on dental images, the detection of dental caries, as well as the identification and examination of dental lesions, which mainly occur around the ...

Number of pages: 253 Category: Management

Dissertation to receive a master's degree ((M.A)) orientation: human resources. Abstract This research aims to investigate the role of necessary infrastructure in the implementation of the administrative automation system (mechanized circulation of correspondence) in the schools of Astara city. In order to achieve these goals, we proposed four hypotheses, which are: 1- A ...

Number of pages: 199 Category: Civil Engineering

Master's Thesis (M.Sc) in Civil Engineering majoring in Engineering and Construction Management Abstract: The transportation industry as a vital artery and an important economic, social, cultural and political connecting link has always been considered and the strategic role and sensitivity of this industry in providing services that meet the needs of various sectors of society ...

Number of pages: 118 Category: Computer Engineering

Master's Thesis of Faculty of Technology and Engineering, Department of Computer Abstract: In this thesis, a new method is presented to detect the subtle emotional states of the face. Euler's video zoom method has been used to reveal subtle facial movements. Euler's video zoom method enhances the subtle movements of signals (color change or transition motion) by temporal and ...

Number of pages: 180 Category: Electrical Engineering

A master's thesis in the field of electrical engineering - field telecommunications, abstract, investigation and analysis of leaf reflective structures in the field of plasmonics for the application of passive components in the design of optical integrated circuits, limits the diffraction limit of the miniaturization of optical elements. Surface plasmon polaritons that propagate ...

Number of pages: 145 Category: Textile Industries

In order to receive a master's degree in textile technology, it is essential to know the physical and mechanical properties of carpets to produce a quality product and maintain the proper appearance. In this research, an attempt has been made to provide a model to determine the relationship between the different parameters of these characteristics, therefore, to measure these ...

Number of pages: 80 Category: Electrical Engineering

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 ...

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: 93 Category: Literature - Persian Language

Dissertation for the Master's degree ""MA"" in Persian language and literature Abstract Culture and customs have always been with the people since long ago and have their roots in the history of the people of every country. Over time, social and psychological factors affect the way these customs are held. With a deep look at the past and the special culture and customs that the ...

Number of pages: 65 Category: Biology - Environment

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 ...

Number of pages: 154 Category: Electronic Engineering

Master's thesis in the field of electricity and telecommunications. Abstract Analysis of the compensation error of the platform movement in the quality of radar imaging in stripmap mode. SAR is one of the most important branches of ""remote sensing"" science, which has received the attention of researchers for years due to its wide applications. In Iran, in recent years, ...

Number of pages: 134 Category: Civil Engineering

Tendency of soil mechanics and foundations. Abstract: Investigating the behavior of soils due to different loadings is one of the most important issues in geotechnical engineering. The behavior of soils depends on several parameters such as grain size, grain type, loading method, stress history, etc. Non-alignment of main stress and main strain directions is a phenomenon that ...

Number of pages: 55 Category: Chemical - Petrochemical Engineering

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 ...

Number of pages: 79 Category: Civil Engineering

Introduction In today's era, the presence of waste materials resulting from various physical and chemical processes is one of the important problems of industrialized and developing countries. So that extensive research is being carried out for methods of recycling or disposing of them to minimize the damage to the environment. In this regard, construction researchers, like ...

Number of pages: 142 Category: Chemical - Petrochemical Engineering

M.Sc. Dissertation for Master Degree in Chemical Engineering - Process Engineering Abstract Mercaptans are removed from hydrocarbon streams by various methods. The use of caustic soda solution and mucoli sieve beds are among the most widely used methods. In the oil and gas industries of our country, washing with relatively dilute caustic solution is often used to remove light ...

Number of pages: 86 Category: Chemical - Petrochemical Engineering

Master's Thesis in the field of Chemical Engineering Abstract Investigation of parameters affecting the production of alumina gel by sol-gel method Sol-gel method is one of the common methods that is widely used to produce different nanoparticles. In this method, a solution of initiators is mixed with water in the presence of a catalyst, and hydrolysis and polymerization ...

Number of pages: 91 Category: Chemical - Petrochemical Engineering

Dissertation for Master's degree in chemical engineering, thermokinetic orientation, abstract removal of hazardous organic pollutants from groundwater and wastewater is one of the most important topics in environmental research. Phenols and phenolic compounds have been identified as hazardous pollutants. Several technologies and processes have been developed for industrial ...

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: 125 Category: Biology - Environment

Master's thesis in the field of civil and environmental engineering. Abstract The main problem in using landfill biogas is the presence of pollutants such as hydrogen sulfide. Hydrogen sulfide gas is colorless, toxic, flammable, and has an unpleasant odor. It is highly toxic and produces SO2 when biogas is burned. In addition, hydrogen sulfide has a corrosive effect. It costs a ...

Number of pages: 103 Category: Biology - Environment

Dissertation for Master's Degree (M.SC) Major: Chemistry and Essential Oil Technology Farsi Summary Introduction: Soil contamination with heavy metals is an important issue that these toxic elements can be transferred in the terrestrial ecosystem and have a potential risk to the quality of food and health, the environment. Soil pollution with heavy toxic metals has increased ...

Number of pages: 119 Category: Chemical - Petrochemical Engineering

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 ...

Number of pages: 89 Category: Medical Sciences

Dissertation for receiving the degree of Doctor of Dentistry, Dental Materials Research Center Abstract Objective: One of the objectives of this study was to investigate the fracture resistance of the teeth coated with various crown and root restorations. Materials and methods: 60 freshly extracted human premolar teeth were selected and randomly divided into five groups of ...

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: 84 Category: Chemical - Petrochemical Engineering

Master's thesis in the field of chemistry, Analytical Chemistry, Abstract In this project, a molecular template polymer was prepared for the selective extraction of phenylmercury chloride. To prepare this polymer, methacrylic acid (active monomer), ethylene glycol dimethacrylate (cross-linking agent), 2,2-azobisisobutyronitrile (initiator), phenylmercury chloride (target ...

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: 103 Category: Chemical - Petrochemical Engineering

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 ...

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: 97 Category: Physical Education - Sports

Dissertation for Master's Degree in Sports Physiology Dissertation Abstract: The aim of the research was: The effect of two types of one-session training with light and high intensity on the functional indicators of the liver of male athletes. Methodology: This research is an applied-semi-experimental research that was carried out with a one-session test design with two ...

Number of pages: 156 Category: Electrical Engineering

Master's thesis in the field of electricity and telecommunications. Abstract Analysis of the compensation error of the platform movement in the quality of radar imaging in stripmap mode. SAR is one of the most important branches of ""remote sensing"" science, which has received the attention of researchers for years due to its wide applications. In Iran, in recent years, ...

Number of pages: 102 Category: Chemical - Petrochemical Engineering

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 ...

Number of pages: 107 Category: Food and Packaging Industries

Dissertation for M.Sc. Degree: Food Industry Abstract: Pectinases are a group of hydrolytic enzymes that break down pectic substances. Exopolygalacturonase (exo-p) and endopolygalacturonase (endo-p) are two types of this group. In this study, two fungal species, namely Aspergillus niger and Vetrichodermarisi, which were able to produce pectinase, were isolated. The results of ...

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: 83 Category: Chemical - Petrochemical Engineering

Chemical Engineering Master's Thesis Abstract: In this research, a method for the synthesis of ZSM-5 nanozeolite was presented. Then this nanozeolite was modified with CTAB surfactant and its characteristics were investigated using XRD, FT-IR, and SEM methods. This nanozeolite was used to prepare a modified carbon paste electrode (SMNZ/CPE) to measure sulfate anion. Also, the ...

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: 82 Category: Chemical - Petrochemical Engineering

Dissertation for Master's Degree in Chemical Engineering Abstract According to reports, heterogeneous photocatalysts are suitable for photodegradation of polluting compounds. Many semiconducting metal oxides such as: TiO2, SnO2, ZnO2, etc. can be used as photocatalysts in water splitting reactions, synthesis of organic compounds and removal of wastewater pollution. synthesized ...

Number of pages: 81 Category: Electronic Engineering

Presented to graduate education management as a part of the educational activities required to obtain a master's degree, the dimensions of MEMS components according to Figure (1-2) include a wide range, from dimensions smaller than one micrometer that are not visible to the eye to dimensions of one millimeter, also types of these systems can be in a simple state, a tool without ...

Number of pages: 182 Category: Chemical - Petrochemical Engineering

Master's thesis in the field of chemistry, mineral orientation Abstract: Synthesis and identification of the symmetric bis((E)-2-nitrophenylallylidene)-2 and 2-dimethyl-1,3-diamine propane ligands with the general formula MLX2, where M represents zinc (II), cadmium (II) and mercury (II) metals and X includes chloride, bromide, iodide, It is thiocyanate and azide, it was done. To ...

Number of pages: 249 Category: Chemical - Petrochemical Engineering

Dissertation for Master's Degree (M.Sc) Direction: Applied Chemistry Persian Summary According to international standards, the sulfur in the fuels used in the transportation industry, as one of the most important polluting industries, should be reduced to about 10 ppmw, while many refineries in the world produce fuels with a sulfur content of more than 1000 ppmw. One of the new ...

Number of pages: 81 Category: Biology - Environment

Abstract: Introduction and objectives alpha-amylase is an enzyme from hydrolases that catalyzes 1-4 alpha-glycosidic bonds in polysaccharides and is one of the most important digestive enzymes. The use of alpha-amylase inhibitors (such as green tea) can be useful in weight control, so comparing the level of hepatic alpha-amylase gene expression between obese and normal mice and ...

Number of pages: 139 Category: Chemical - Petrochemical Engineering

Master's Thesis in Polymerization Engineering Abstract In this research, the thermal and catalytic pyrolysis of four types of polymers such as heavy polyethylene and polypropylene and two styrene butadiene rubber and polybutadiene rubber in a semi-continuous stirred reactor under nitrogen gas and using HZSM-5, FCC and H-Mordenite catalysts has been investigated. In this study, ...

Number of pages: 101 Category: Facilities - Mechanics

In order to obtain a master's degree in the field of mechanical engineering, energy conversion, abstract: In this thesis, the mass and heat transfer by integral method in the flow of natural displacement of a fluid with a very low frontal near the wavy inclined wall and under the magnetic field has been investigated. The wall is permeable and as a result, the fluid can be sucked ...

Number of pages: 77 Category: Veterinary Medicine

Doctoral Dissertation of Veterinary Professions Abstract: One of the best management tools is to give a body score, which is considered as a factor for producers to evaluate health and nutritional status. This method helps to evaluate a group or herd of cows in terms of body reserves, especially fat and muscle. Body score may change at all stages of the production, feeding and ...

Number of pages: 86 Category: Biology - Environment

Dissertation for receiving a master's degree in the field of preservation and modification. Abstract In this research, the effect of combined modification of colloidal silver-hot water on the heat transfer from the hot press plates to the heart of the beech (Fagus orientalis) chipboard cake, the physical and mechanical properties of the chipboard and the chemical changes of the ...

Number of pages: 102 Category: Chemical - Petrochemical Engineering

Master's Thesis of Polymer Industry Engineering Abstract With the progress of human civilization, technology development and the ever-increasing population, the world is currently facing a problem called pollution that threatens the lives of the inhabitants of the earth. Pollution caused by the accumulation of persistent toxic compounds in soil and water, such as chemicals, ...

Number of pages: 97 Category: Chemical - Petrochemical Engineering

Dissertation for Master's Degree in Analytical Chemistry Abstract Nowadays, nanostructures have attracted the attention of many researchers due to their new features and applications in different fields and branches of science and technology. Meanwhile, nanocomposites, due to their unique physical and chemical properties, as well as potential applications in catalytic, ...

Number of pages: 154 Category: Physics

Abstract The differential equations that appear in physical problems are often non-linear, and their exact solution is necessary to obtain the solution. Since most of the nonlinear differential equations do not have an analytical solution, the numerical solution methods of these equations seem useful for things like plasma physics. For this purpose, in this thesis, the numerical ...

Number of pages: 90 Category: Agricultural Engineering

Master's thesis in the field of agriculture, plant breeding, abstract. After drought stress, salinity stress is the second limiting factor for the performance of agricultural plants at the global level. Based on the division of plants in terms of tolerance to salinity stress, sorghum is placed in the semi-tolerant class, and its salinity tolerance threshold is 4.9 to 6.8 ...

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: 87 Category: Food and Packaging Industries

Dissertation for receiving a master's degree in the field of food science and engineering, specialization: food science and industry. Abstract Considering the various uses of vegetables in human nutrition, as well as their taste and usefulness in maintaining health and well-being, their importance is increasing day by day. Considering the short life after harvesting and ...

Number of pages: 69 Category: Facilities - Mechanics

Dissertation for receiving M.Sc degree in mechanical-structural engineering and the production of aluminide permeable coatings for the protection of gas turbines used in power plant, aviation, marine, oil and gas and petrochemical industries, which are mainly attacked by high temperature oxidation and hot corrosion phenomena. In this research, in order to use the effect of ...

Number of pages: 64 Category: Facilities - Mechanics

Master's Thesis of Mechanical Engineering-Applied Design Abstract In many applications, graphene (monolayer or multilayer) is used in the polymer matrix as a composite. In this research, ideal graphene with a hexagonal bond shape between atoms, located in a polymer matrix, with different boundary conditions, including gripped and simple, under biaxial external compressive ...

Number of pages: 71 Category: Food and Packaging Industries

Dissertation for Master's Degree in Food Science and Engineering, Food Microbiology, Abstract: Today, the increase in environmental pollution and the decrease in oil resources have led to the development and replacement of biodegradable packaging instead of packaging derived from petroleum resources. Also, in this regard, the use of antimicrobial compounds such as silver ...

Number of pages: 86 Category: Facilities - Mechanics

The thesis for obtaining a master's degree in the field of mechanics, investigating and analyzing the free and forced vibrations of a multi-walled carbon nanotube placed in an elastic medium in order to achieve a clear mathematical understanding of the behavior of different walls of the nanotube under the influence of van der Waals forces and the elastic medium is one of the ...

Number of pages: 78 Category: Biology - Environment

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 ...

Number of pages: 49 Category: Food and Packaging Industries

Dissertation for Master's Degree in Food Science and Engineering. Abstract Every year, millions of tons of plastic waste, including bags, plastic envelopes, and packaging materials, enter the environment and cause problems to the environmental cycle due to their irreversibility, and as a result, the need for degradable plastics in nature is increasing day by day. Today, the ...

Number of pages: 81 Category: Electronic Engineering

The thesis submitted to graduate education management as part of the educational activities required to obtain a master's degree in the field of 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 ...

Number of pages: 180 Category: Electrical Engineering

Master's Thesis in the field of electrical engineering - field telecommunications, abstract, investigation and analysis of leaf reflective structures in the field of plasmonics for the application of passive components to Omidreza Daneshmandi's effort in designing optical integrated circuit limits the diffraction limit of miniaturization of optical elements. Surface plasmon ...

Number of pages: 175 Category: Facilities - Mechanics

Mechanical Engineering Master's Thesis - Energy Conversion Abstract Coating with thin layers plays a very important role in semiconductor industries and microelectromechanical and nanoelectromechanical equipment. By adding a thin layer to the surface due to interference of electromagnetic waves, the radiation properties of the surface will be completely different. In this ...

Number of pages: 144 Category: Facilities - Mechanics

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 ...

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 ...