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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) ...

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 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 ...

Dissertation: To obtain the degree of professional doctor of veterinary medicine (D.V.M.) Farsi abstract title: Evaluation of the total dissolved solids (TDS) factor in the drinking water of poultry farms in Piranshahr city. Water is considered one of the most important chemical substances in terms of biology and exists in solid, liquid, and vapor forms in nature. Water is one ...

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 ...

Dissertation for obtaining a doctorate degree in the field of mechanical engineering - manufacturing and production: the advantages of using semi-solid processes are reducing the amount of gas porosity and shrinkage and modifying the microstructure, which aims to improve the mechanical properties of the part. In this research, the cooling ramp method has been used to produce the ...

Dissertation for receiving a master's degree in food technology, Persian abstract, background and purpose: Olive tree leaves have many compounds, including oleuropein, which are related to the majority of their medicinal properties. Olive leaf extract is also rich in phenolic compounds. In order to extract phenolic compounds, olive leaves must first be dried. Natural drying and ...

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 ...

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

Abstract The Persian Gulf is one of the strategic and vital points from the point of view of international politics. In addition to the importance of shipping, the discovery and extraction of huge oil and gas resources and the strong dependence of countries on these materials as vital materials for industry have increased the geopolitical importance of this region. In such a way ...

Dissertation for M.A. Orientation: Natural Geography (Geomorphology-Hydrology) Abstract The increasing population growth followed by the development of industrial activities on the one hand and non-compliance with environmental requirements on the other hand, has caused huge amounts of pollutants to enter the environment in the last few decades. Accumulation of some dangerous ...

Dissertation for M.A. Orientation: Natural Geography (Geomorphology-Hydrology) Abstract The increasing population growth followed by the development of industrial activities on the one hand and non-compliance with environmental requirements on the other hand, has caused huge amounts of pollutants to enter the environment in the last few decades. Accumulation of some dangerous ...

Dissertation for receiving a master's degree, field of study: electricity-power, orientation: electric machines in a synchronous generator, a dc current is applied to the rotor coil to produce a magnetic field. Then the rotor of the generator is rotated by a prime mover to create a rotating magnetic field in the machine. This magnetic field induces a three-phase voltage in the ...

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

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 ...

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

Dissertation for receiving a master's degree in the field of civil engineering with a focus on soil and foundation. Abstract: The compressibility behavior of soils has become an important concern in geotechnical engineering. As buildings, embankments and roads are implemented, significant settlements often occur. Since long-term settlements occur due to creep, therefore, the ...

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 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 ...

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

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 ...

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 ...

Chemistry - trend of organic chemistry Abstract Coumarin or (2-H-chromen-2-one) and their derivatives are compounds that are naturally present in many plants, including tonka beans. And they are an important class of the family of benzopyrone compounds. Coumarin and its derivatives are considered essential elements in many bioactive compounds such as anticoagulant, anti-HIV, ...

Thesis for obtaining a master's degree. Abstract: The increase in environmental concerns and the progress of green chemistry processes have necessitated the replacement of homogeneous catalysts with heterogeneous ones. In this research, activated carbon was used as a suitable substrate due to its special properties. The most important of these properties are resistance in acidic ...

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 ...

Thesis for obtaining the M.A. master's degree. Field: Persian Language and Literature Abstract: The structural and semantic transformations of words and language combinations are very important in the field of language history research because it helps us to identify the authenticity and antiquity of our border language. Over time, these compounds gradually lost their original ...

Dissertation for Master of Chemical Engineering Abstract: In this research, it is attempted to solve one of the major problems in the field of drug production, i.e. improving the solubility of drug particles in body fluids[1] by using the process of solvent/anti-solvent precipitation and nano-scale sediment production in a ?-shaped microchannel, the effect of surfactant ...

Academic Dissertation for Master's Degree in: Organic Chemistry 1-1) Introduction Today, nanotechnology [1] is an attractive subject that has attracted the attention of scientists, industrialists and even ordinary people due to the special properties and practical potentials of these materials. Considering the wide applications of carbon nanotubes, the methods of mass production ...

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

Dissertation for obtaining a master's degree in the field of chemical nanoengineering Abstract In the uranium enrichment unit by centrifuge, UF6 gas after passing through the centrifuge and performing the enrichment process, enters the cold trap and is solidified and collected at a low temperature. One of the absorbents used to absorb uranium hexafluoride is sodium fluoride. The ...

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 ...

Dissertation for receiving a general doctorate degree Abstract Introduction and purpose: Metallobetalactamases (MBL) are enzymes that are produced by non-fermenting Gram-negative bacilli such as Pseudomonas aeruginosa and make these strains resistant to carbapenems. As a result, Pseudomonas carrying metallobetalactamase genes are considered a serious clinical threat. Considering ...

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 ...

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 furan. To prepare this polymer, methacrylic acid (functional monomer), ethylene glycol dimethacrylate (cross-linking agent), 2,2-azobisisobutyronitrile (initiator), a mixture of pyrrole (furan substitute or target ...

Dissertation for M.Sc. Chemical Engineering-Environmental Engineering Abstract: Microbiological fuel cells (MFC) are considered as one of the important potentials in providing clean and renewable energy in the future. In addition to providing electrical energy, which is the most widely used and flexible among other types of energy, MFCs not only do not cause the slightest ...

Thesis for receiving a master's degree in the field of chemical engineering in the field of biotechnology. The abstract of this research was conducted in order to optimize the operational parameters for the use of bioleaching technology in the extraction of copper from the slag produced by the reflective smelting furnaces of Sarchesmeh copper complex. Wide applications of ...

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

Dissertation for Master's Degree in Advanced Chemical Engineering Abstract A new method based on point cloud extraction to extract uranium from water samples and its measurement using alpha spectrometry based on liquid scintillation has been investigated. Uranium extraction from water samples in the presence of a number of available surfactants and chelating reagents has been ...

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

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 ...

Dissertation to receive a master's degree (((M.sc) specialization: medical nanotechnology) Abstract In the present research, the cation exchange property of clinoptilolite is used due to its negative charge in its structure. The connection of this research topic with medical nanotechnology is due to the nanopores and porosity of clinoptilolite and the high absorption level of ...

Dissertation for Master's Degree in Chemistry, Chemistry, Abstract: Epoxy resins, which are thermosetting polymers, have properties such as high thermal stability, good adhesion, high chemical resistance, easy molding, and moisture resistance. These resins are used as adhesives, coatings, paints and polymer tools. The most common epoxy resin is prepared from the reaction of ...

Master's Thesis in Animal Science, Livestock and Poultry Nutrition Abstract This experiment was designed and implemented with the aim of investigating the effects of garlic or fresh onion supplementation on performance, immune system and blood lipid profile in broilers. For this purpose, 308 out of 432 day-old male chicks were divided into nine groups with four replicates and 12 ...

Master's Thesis in Microbial Biotechnology Abstract Probiotics are food containing living microorganisms that are useful for the body. In other words, a probiotic is a live edible microorganism that has a positive effect on the cells of the host body and improves and increases the microbial balance of the consumer's body. Probiotics are often used in the production of fermented ...

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

Dissertation for receiving a master's degree in the field of agricultural engineering, science and food industry, food microbiology. Abstract The antimicrobial effect of elderberry kernel extract as a substitute for chemical preservatives in the market was investigated on the chemical, microbial and sensory characteristics of mayonnaise. The measurements showed that the ...

Dissertation for obtaining a master's degree in the field of health and food safety Abstract background: Jashir plant grows in the cold and mountainous regions of Fars province (Sepidan, etc.) Indigestible carbohydrates (fiber) in the leaves of this plant may play a role as prebiotics in probiotic yogurt. Objective: To investigate the effect of Jashir on the physicochemical ...

Master's thesis in the field of electrical engineering, power orientation Abstract: Pulsed power is a design for discharging stored electrical energy on a load in one or more short pulses with a controllable repetition rate. Pulse power generation technology is divided into two branches: low power pulses and high power pulses. Low-power pulses are several megawatts and ...

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

Master's Thesis in Polymer Science and Technology Abstract: Today, cancer is one of the most important concerns of the medical world, for which no definitive cure has been found so far. Radiation therapy is one of the methods used to control and reduce the complications of cancer. Brachytherapy is one of these radiation therapy methods in which the radiation source is placed ...

Dissertation to receive a master's degree in the field: Chemistry, specialization: organic. Abstract In recent years, the use of nanotubes as nanocarriers for drug delivery has been researched. In this research, fullerene C60 and nine different nanotubes have been used as carriers of the drug molecule 8-hydroxyquinoline. First, the structure of HQ-8 drug molecule and nanotubes ...

Dissertation for Master's Degree in Agricultural Engineering, Horticultural Science-Fruiting tendency Abstract Grapes are non-dehiscent fruits with low physiological activity and are very sensitive to water loss and fungal contamination, especially gray mold, during the post-harvest period in the warehouse and during transportation as well as marketing. In the present study, the ...

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 for master's degree in horticultural science, fruit work, summary: the use of healthy compounds compatible with human health and nature is one of the important concerns of technology researchers after harvesting horticultural products. The purpose of this research was to investigate the effect of oral coating of aloe vera gel and calcium chloride on the shelf life ...

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 ...

Dissertation for M.Sc) in the field of mechanics in the field of construction and production. Abstract In the present research, the design and construction of the ECAR machine in order to investigate the effects of the process on carbon steel sheets was our goal. The desired research was carried out in the research workshop of Islamic Azad University, Jaseb branch. After the ...

Abstract: The green wheat aphid, Sitobion avenae (Fabricius), has been one of the important pests of small grains, especially wheat, in recent years, and its population is expanding, and it is one of the important factors of barley yellow dwarf virus transmission. Recently, it has been suggested that induced resistance can be used to reduce the insect population. Induced ...

Thesis for Master's Degree in Animal Nutrition Abstract The purpose of this research was to investigate the effect of different levels of black seed on growth performance, some blood factors and immune response in quail. For this purpose, 240 one-day-old quail pieces were distributed in 4 treatments and 4 repetitions and 15 quail pieces in each repetition in a completely random ...

Dissertation for Master's Degree in Horticulture-Fruit Science Abstract Rish Baba grape variety is one of the most popular fresh edible cultivars cultivated in Iran, but usually the pods have poor color. In this study, the effect of ring removal and ethfen treatments on the quantitative and qualitative traits of 'Rish Baba Garmez' grape variety was investigated. The experiment ...

Dissertation for Master's Degree (M.Sc) in the field of Animal Science, Animal Nutrition, Abstract: This study was conducted in order to compare the effect of rice bran enriched with fish waste on the microbial population of the digestive tract and the humoral immune response of 200 one-day-old broilers of Ras 308 strain in the form of a completely randomized design with 5 ...

Dissertation: To receive the degree of professional doctor of veterinary medicine (D.V.M.) Farsi abstract Title: Investigating the contamination of drinking water of broiler farms in Piranshahr city with Escherichia coli bacteria Drinking water is one of the vital and nutritious factors that is necessary for optimal growth and control of body temperature and should always be ...

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 ...

Thesis for obtaining a master's degree in the field: Agricultural Engineering-Horticultural Sciences, specialization: Physiology and breeding of fruit trees. Abstract Enzymatic browning is the most important physiological abnormality that strongly affects the post-harvest quality and storage life of Japanese parsnip. In order to investigate the effect of distilled water and a ...

- Introduction Among herbivorous domestic animals, ruminants have a great contribution in food supply and human health. On the one hand, nutrition has played a major role in the economic and functional efficiency of these animals, so that almost two-thirds of the total cost of animal production in different livestock breeding units is allocated to feed costs, and on the other ...

Master's Thesis of Precision Instrumentation and Automation in the Oil Industry. Abstract: Corrosion rate prediction and wear rate constant in gas brain tube using neural network is a phenomenon that is very complex due to the influence of various factors and cannot be modeled easily. In order to predict and model corrosion, attention is paid to its physical, chemical and ...

Dissertation for receiving a master's degree in the field: Food Science and Industry Abstract: In addition to changing the organoleptic characteristics of the food, the oxidation of oils reduces the nutritional value and shelf life of oils and has a negative effect on the health of consumers due to the production of undesirable compounds in the oil. There are many ways to ...

Dissertation for Master's Degree in Horticulture Science Summary: The use of healthy compounds compatible with human health and nature is one of the important concerns of technology researchers after harvesting horticultural products. The purpose of this research was to investigate the effect of oral coating of aloe vera gel and calcium chloride on the shelf life and quality ...

Master's Thesis in Mechanical Engineering, Energy Conversion, Abstract: Thermal energy storage and phase change materials for use in heating and cooling systems of buildings has become an important issue in the last 20 years. When there is a mismatch between energy production and its consumption time, the issue of energy storage becomes important. In the present work, the fluid ...

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 ...

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

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 ...

Dissertation for M.Sc degree, major: food microbiology, abstract Sterilized milk products that are prepared by the Faradam method, especially Faradam milk and cream, have opened their place in the diet of Iranian people in recent years. By adding healthy ingredients to products such as breakfast cream, the nutritional value of these products can be improved. In this research, ...

Dissertation for receiving a master's degree in the field of food science and industry, food microbiology, abstract, due to the vast amount of desert resources in the country, as well as the problems of lack of water, camel breeding and attention to its meat have gained considerable importance. Rosemary is one of the medicinal plants with proven antimicrobial properties. In the ...

Dissertation for M.Sc degree, specialization: manufacturing and production, abstract in this thesis, how to improve the properties of plastics with the help of heat treatment. First, we will talk briefly about polymers, plastics and their sub-branches and heat treatment on them, and then we will discuss the effect of annealing heat treatment on heavy polyethylene sheets that are ...

Dissertation for Master's Degree (M.Sc.) in Agricultural Engineering, Food Science and Industry, Yogurt is the most famous and widely consumed fermented milk product in the world. The most common defect in texture that leads to the non-acceptance of this product by the consumer is water loss. Today, in Iran, condensed yogurt is mostly produced in the reverse way, that is, by ...

The thesis for receiving a master's degree in the field of agricultural engineering, animal science - animal nutrition, abstract was designed to study the effect of milk dry matter percentage and a combination of medicinal plants on experimental performance in the form of a completely randomized basic design with a 2x2 factorial arrangement on 40 Holstein male calves from the ...

Master's Thesis in Geography and Rural Planning Abstract Population increase, growth and development of urban and rural communities have all caused the amount of solid waste production to increase, and today this issue has become one of the problems of mankind, which has put both his health and the environment at risk. This research aims to investigate and analyze the most ...

Dissertation for obtaining a master's degree, field: psychology, orientation: clinical, Farsi abstract. Purpose: This research was conducted with the aim of comparing family solidarity, mental health, and religious orientation in runaway and normal girls in Tehran. Method: Causal-comparative research method and its statistical population were 200 runaway and normal girls in ...

Dissertation for receiving the master's degree ""MSc"" specialization: applied chemistry Farsi abstract of the thesis or dissertation (including: summary of objectives, implementation methods and results obtained in maximum 10 lines): The possibility of manipulating matter at the nano level was first proposed in written form by Richard Feynman. During his conference called ...

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 ...