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

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

Dissertation for M.Sc. Abstract Orchids are among the most diverse family of flowering plants. This family has more than 800 genera and 25,000 species. Orchids come in a wide variety of sizes, shapes and colors. The lifespan of orchids after harvesting is also long. The large-scale increase of orchids using plant tissue culture techniques contributes to the position of this ...

Dissertation for the Master's degree ""M.A."" Accounting major: Accounting Abstract: In this research, the relationship between ownership structure and financing methods of companies accepted in the capital market of Iran has been investigated. The model (Lin et al., 2013) has been used to measure financing methods. Among the financing control mechanisms, institutional ...

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 ...

Dissertation for M.Sc Master's Degree in Remote Sensing and Geographical Information System - Water and Soil Resources Abstract One of the important issues in crisis management of unexpected natural events, especially earthquakes, is optimal location in order to accommodate citizens during or after an accident. One of the major problems of the organizations involved in urban ...

Dissertation for obtaining a master's degree in the field: Natural Geography Major: Climatology Abstract Floods are one of the natural phenomena that mankind has been witnessing since a long time ago. In Iran, due to the large area, multiple climates, and temporal and spatial density of rainfall in most watersheds, every year we see huge floods in most regions of the country. ...

Chapter 1 1-1-Introduction Climate[1] is a complex system[2] that is changing mainly due to the increase of greenhouse gases. During the 20th century, especially in the last two decades, the climate of the earth lost its balance and showed a tendency to increase the temperature (Rahimiu et al., 2012). According to many experts, climate change is a natural phenomenon[3] that has ...

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 ...

Thesis for obtaining the master's degree ""M.A"" in the field of geography - climatology. Abstract Every research work is definitely done in order to find a problem in the society. When the problem in a society reaches a certain limit, a person feels that he should seek a solution, and for this reason, he researches. The movement of people is considered one of the important ...

Master's thesis in the field of physical education, general orientation. The present research was conducted with the aim of investigating the relationship between role ambiguity and the level of aggression in football players of the Iranian Premier League. Using descriptive-correlational research, three teams (72 players) were selected as a sample from the teams present in the ...

Master's thesis in the field of physical education, general orientation. The present research was conducted with the aim of investigating the relationship between role ambiguity and the level of aggression in football players of the Iranian Premier League. Using descriptive-correlational research, three teams (72 players) were selected as a sample from the teams present in the ...

Doctoral Dissertation in the field of Civil Engineering - Water and Environment Abstract Network methods are among the most widely used groundwater modeling tools that have been widely spread and accepted in the last two decades. On the other hand, the advancement of computing power of computers and the ease of access to them have led to the rapid development of numerical ...

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 ...

Master's Thesis of Chemical Engineering Abstract In the last few decades, due to the growth of the population as well as the improvement of living standards, the consumption of fibers and the production of textile waste materials have increased greatly. Burial and burning are one of the main ways of managing textile waste materials, which have destructive environmental effects. ...

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 ...

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, ...

Thesis for master's degree in the field: chemical engineering Abstract Hard polyurethane[1] is always considered one of the most effective and practical polymers in various industries, especially the coating industry. Excellent adhesive property, curing ability at ambient temperature and corrosion resistance of this polymer are some of its remarkable features. This study was ...

Master's thesis in the field of chemical-biotechnology engineering Abstract Protozoan protein refers to the protein obtained from the cultivation of bacteria, yeasts, filamentous fungi or algae, which can be used as human food or animal feed. In fact, protozoan protein is the dried cells of microorganisms that are obtained by their fermentation on different substrates. ...

Dissertation for Master's Degree in Chemical Engineering Abstract: Microbial fuel cell biotechnology is a new science, in which microorganisms, as cheap catalysts, convert the chemical energy contained in organic and inorganic compounds into electrical energy. Optimizing parameters affecting battery performance is one of the first laboratory steps towards the development of this ...

Dissertation for receiving a professional doctorate degree in the field of medicine Persian Abstract Introduction: Considering the importance of swimming in physical and mental health and the aspect of water therapy for diseases, it is important to observe hygiene and standards in swimming pools. Swimming pools, as one of the recreational centers and in terms of direct ...

Master's Thesis in Special Care, Special Care, Abstract Background and Objective: Improving the quality of central venous catheter care requires raising the level of nurses' awareness of the standard guidelines for catheter care and the results of research in this field. In this regard, the present study was conducted with the aim of determining the effect of the ...

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, ...

Master's Thesis on Irrigation and Drainage Abstract In arid and semi-arid regions, wastewater treatment and its reuse is considered as an important factor in water resource planning. Some researchers believe that the use of treated wastewater in agriculture is a very suitable solution because the elements removed from the soil by the plants are returned to the soil and the risk ...

Abstract: After wheat, rice is one of the most important grains consumed by the people of the world, which is widely present in people's diet. Half of the world's population depends on rice as a staple food. There are many items of rice in the world and now rice is one of the strategic products of the country. Contamination of rice with heavy metals may be a serious threat to ...

Persian Abstract Effect of salinity stress on the growth characteristics of some selected almond genotypes (Prunus dulcis) grafted on GF677 base, the combination of rootstock and scion can affect the growth characteristics and nutrient concentration of almond leaves and roots under salt stress conditions. In order to evaluate the effect of salinity stress on morphological, ...

Master's Thesis on Aquatic Ecology, Fisheries Abstract Rivers, as one of the most important water resources, are very vulnerable to human activities. Creating reservoirs and dams is one of the oldest forms of human intervention in aquatic ecosystems. Despite the many benefits (hydroelectric energy production, flood control and water level regulation), dams also have the ...

Thesis for receiving a master's degree in the field of agricultural engineering, food science and food industry, food technology, abstract. Halva in Iran, despite its high potential in diversity and creating added value, has not been industrially produced to date, and the purpose of this research is to investigate the formulation of wheat flour halva and its production and ...

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) major: Agriculture, investigating the effect of several types of pretreatment on Maritigal plant seeds (Silybum marianum) under several levels of salinity stress. Abstract: According to the available statistics at the global level, after China, India and Pakistan, Iran has the highest percentage of saline lands, so it is necessary to ...

Dissertation for Master's Degree in Agricultural Engineering (M.Sc) Abstract This experiment was carried out to investigate the effect of different treatments on the dormancy of wild oat seeds in the form of a completely randomized design (CRD) in two phases, laboratory and greenhouse, in 2011. The tested treatments included potassium nitrate with percentages of 0.6, 0.4, and ...

Dissertation for receiving a master's degree (MSc) in the field of animal science - animal nutrition. Abstract In order to investigate the effect of rosemary powder and vitamin E on performance, blood parameters, immune system, and the quantity and quality of broiler chickens, an experiment was conducted in the form of a factorial design. For this purpose, 270 one-day-old male ...

Dissertation for M.Sc. specialization: Agriculture Abstract to investigate the effect of salicylic acid on the yield and yield components of barley variety (Walfajr) under experimental drought stress conditions in the greenhouse of Arsanjan Azad University, in the crop year (1389-1390). This experiment was carried out as a factorial in the form of a randomized complete design ...

Dissertation for Master's Degree in Food Science and Technology, Food Technology, Abstract: Today, the world is facing a tsunami of non-communicable diseases, among which cardiovascular diseases and cancer are the biggest killers of the century, and blood pressure is known as the leading cause of death for Iranians. Modifying the nutrition style is the key and the way to prevent ...

Master's thesis in the field of agricultural engineering - horticultural sciences, specialization: ornamental plants. Abstract In order to investigate the effect of sodium nitroprusside on the flowering life of rose, sunflower and lisianthus cut flowers, a study was conducted in the form of a factorial experiment based on a completely randomized design with two sodium ...

Dissertation for Master's degree (M.Sc.) specialization: green space, ornamental plants in terms of auxin application and cutting position on the rooting of stem cuttings of four common ornamental shrubs in green space by: Hossein Ramezani Abstract in order to investigate the effect of different concentrations of indole butyric acid (IBA) (zero, 1000, 2000 and 4000 mg/liter) and ...

Thesis for receiving a master's degree in agricultural engineering, biotechnology in agriculture. Abstract This study was carried out in order to optimize the method of micropropagation of two native apple rootstocks (ornamental and jam) and to improve their establishment and branching stage. First, samples were taken from healthy and active branches of the mother trees of these ...

Department: Plant Products Master's Thesis in Plant Products-Horticulture Abstract Rose (Rosa hybrida) is considered one of the most popular flowers in the world and its cut flower branch is the most used among other flowers. Due to the physiological reasons of being a rose cut flower, during its shelf life, it is highly susceptible to withering and reducing its freshness and ...

Dissertation for Master's Degree in Horticultural Science, Medicinal Plants Abstract: The genus Salvia belongs to the Lamiaceae family, which includes several species. Sage (Salvia sclarea L.) is used in traditional medicine and in trade, especially in the production of essential oil and as a seasoning and flavoring for food. The distribution area of ??this plant is the ...

Dissertation for Master's Degree in Ecological Agricultural Engineering Abstract In order to investigate the effect of waterlogging period and different amounts of phosphorus and potassium on nitrogen biofixation in the vegetative stage (V4) of Soybean cultivar Dipiax (Ketol), a pot experiment was conducted in 2012 at Gorgan University of Agricultural Sciences and Natural ...

Dissertation for receiving a Master's degree (M.Sc) major: food chemistry Summary Persian Iran is the main habitat of walnuts. Iranian walnut is an economically important species and has a lot of nutritional value. In this research, random walnut samples were collected from 100 walnut trees in two areas of Baghstan located in Tehran province and Erengeh located in Alborz ...

Dissertation for master's degree in horticultural sciences, majoring in medicinal plants. Abstract Carum copticum L. is an annual plant belonging to the umbrella family that grows in Iran, India, Egypt and Europe. Among medicinal and aromatic plants, zenian is a plant on which little studies and researches have been done. The purpose of this research was to identify the best ...

Master's Thesis in Food Science and Technology (M.Sc) Major: Food Engineering Abstract In this research, the effect of zadu and CHO gums at 5 levels of 0, 0.1, 0.2, 0.28 and 0.4 percent and gum arabic and xanthan gum at levels of 0, 0.5, 0.9, 1.4, 1.8 and 0.08, respectively. 0.1, 0.15 and 0.2% on the stability, rheological and sensory properties of buttermilk during 59 days of ...

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 ...

Effects of hormones and explants on calligenesis, regeneration and cell suspension culture in fennel (Foeniuculum vulgare) Introduction: Fennel (Foeniuculum vulgare) is a herbaceous, stable, aromatic plant from the family of Chetrian, which is used for food and medicine in different regions of Iran. Considering the importance of the compounds of this plant in the pharmaceutical ...

Dissertation for Master's Degree (M.Sc.) Field: Horticulture-Ornamental Plants Abstract chrysanthemum (Dendranthema grandiflorum L.) is one of the non-flowering flowers and sensitive to vascular blockage. This study is based on a completely randomized design with 10 treatments including geranium plant essential oil in 3 levels (2, 6 and 10 cc in 600 cc of distilled water), case ...

Dissertation for Master's Degree in Agricultural Engineering (M.Sc) Major: Food Science and Industry Abstract Diazinon is an organophosphorus insecticide and is widely used by farmers. This poison can easily find its way into food and exert its toxic effects on humans. Diazinon poison, like other organophosphorus poisons, inhibits some enzymes, especially acetylcholinesterase. ...

Dissertation for receiving a master's degree in the field of plant production, horticultural orientation. Abstract In order to investigate the effect of gibberellic acid, ring removal, cluster thinning and cluster thinning on the qualitative and quantitative characteristics of Askari variety grapes, the experiment was carried out in the form of a randomized complete block design ...

Master's Thesis of Horticultural Sciences, Physiology and Breeding of Medicinal Plants Abstract In order to investigate some physiological and morphological properties of castor plant under drought stress and nitrogen fertilizer in different cultivars of this plant, an experiment was conducted with a basic design of randomized complete blocks in the form of split factorial in ...

Abstract: Drought stress is one of the most important factors limiting the growth of agricultural plants, which adversely affects crop yield. One of the methods that have been used in recent years to deal with dehydration and drought stress in many plants is the use of useful microorganisms such as mycorrhizal fungi. Mycorrhizal fungi with extensive hyphal network and increased ...

Master's Thesis in Mechanical Engineering (Applied Design) Abstract of three-dimensional interlayer stress investigation in mechanical connections in layered composite materials The purpose of this thesis is to investigate three-dimensional interlayer stresses in mechanical connections in layered composite materials. For this purpose, finite element method and ABAQUS software ...

Abstract: In this study, the relationship between ownership concentration, company performance and dividend policy in companies listed in the food and pharmaceutical industries of the Tehran Stock Exchange has been examined. The statistical sample of the research includes 44 companies during the period of 1380 to 1387. The chosen approach for hypothesis testing is the ...

Dissertation to receive M.A. degree in educational psychology. Abstract Objective: The aim of the present study was to compare short-term memory, accuracy and concentration of 10 and 11-year-old children who learned and did not learn music. Method: The present research method was causal-comparative or post-event. The research sample consisted of 50 music students (with at least ...

Introduction There is a need to understand the universe and communicate with its unknowns, including the human characteristics that have been with him since birth, have changed shape over the course of his life, but do not disappear. Folk tales and legends that come from the heart of Qahar's legend, such as grandfathers and grandmothers; The rise and insatiable desire of ...

Dissertation for Master's Degree in Physical Education (M.A.) Major: Exercise Physiology Abstract The purpose of this research is to investigate the effect of 6 weeks of high-intensity interval training on the serum levels of growth hormone and ghrelin in overweight men. For this purpose, 20 overweight men were randomly divided into two groups (experimental=10, control=10). ...

Dissertation for Master's Degree in Computer Engineering-Artificial Intelligence and Robotics Abstract: Every year, many traffic accidents occur all over the world due to driver drowsiness and inattention, which cause a lot of loss of life and money. One of the ways to detect fatigue and lack of concentration is to use driver face monitoring systems. By receiving images from the ...

Dissertation for Master's Degree in Civil Engineering - Soil and Foundation Mechanics Abstract The purpose of this research is to improve the mechanical and geotechnical properties of windy sand soils. Because one of the major problems of windblown sand is its low resistance under natural and saturated moisture conditions, a laboratory study was conducted to investigate the ...

Master's Thesis in Civil-Structural Engineering Today, domes and arches have found wide applications in architectural and industrial structures due to their suitable coverage of large openings. The use of today's technologies in styling and optimizing energy consumption in these types of structures is one of the important challenges facing engineers. Therefore, the need to ...

Master's Thesis: MBA Abstract This research examines the effect of ownership concentration on audit fees in companies listed on the Tehran Stock Exchange. The amount and nature of external audit fees requested by auditors, with three descriptive factors; The volume of the operation, the complexity of the operation and the audit risk are related. The research showed that the ...

Master's Thesis in Civil Engineering (Soil and Foundation) Abstract Dense sand piles have been used since 1950 in Japan and then in other countries of the world as one of the most effective and economical methods in strengthening soil in order to prevent liquefaction, increase bearing capacity and improve soils with different grain sizes. The process of implementing dense sand ...

Master's thesis in the field of chemistry, analysis, abstract. In this research, the synthesis of polymer nanoparticles of ion template using sedimentation method and for the separation and preconcentration of nickel ions from aqueous samples is reported. Nickel template polymer nanoparticles by dissolving stoichiometric amount of nickel nitrate and ligand ...

Dissertation for Ph.D. Ph.D. Persian Summary Aripiprazole is an atypical antipsychotic drug that shows its therapeutic effect with a combination of antagonistic activity of 5-HT2A receptor and partial agonistic activity of 5-HT1A and D2 dopamine receptors. This drug is used in the treatment of schizophrenia, type I bipolar disorders and as an adjunctive treatment in major ...

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 ...

Master's thesis in the field of chemistry, analysis, abstract. In this research, the synthesis of polymer nanoparticles of ion template using sedimentation method and for the separation and preconcentration of nickel ions from aqueous samples is reported. Nickel template polymer nanoparticles by dissolving stoichiometric amount of nickel nitrate and ligand ...

Dissertation for Master's Degree in Physical Education (M.A.) Major: Exercise Physiology Abstract The purpose of this research is to investigate the effect of 6 weeks of high-intensity interval training on the serum levels of growth hormone and ghrelin in overweight men. For this purpose, 20 overweight men were randomly divided into two groups (experimental=10, control=10). ...

Dissertation for receiving a Master's degree (M.Sc) major: applied chemistry Persian Summary Raloxifene is used to treat breast cancer and infertility related to oligomenorrhea or secondary amenorrhea. Raloxifene is a new treatment that has recently become available for the prevention of osteoporosis of the spine. This medicine is taken as one pill a day. In some ways, this drug ...

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 ...

Abstract In this research, the effect of different degrees of burial in windy sand on some physiological and vegetative characteristics of Qara Dagh and Rames species was measured. One-year-old saplings of Qarhadagh and Rames species were obtained from the nursery of the General Department of Natural Resources of Yazd province and subjected to five control treatments, burial ...

Dissertation for obtaining a master's degree, specialization: accounting, abstract: It is generally believed that the presence of institutional investors may lead to a change in the behavior of companies. The influence of institutional investors on management decisions regarding financial decisions has been proven in previous researches. The purpose of this research is to ...

Dissertation for obtaining a master's degree in civil engineering, structural orientation, March 2013, abstract of the scope of using FRP materials for shear strengthening of reinforced concrete beams in

Dissertation for receiving a master's degree in the field of executive management of strategic orientation March month 1391 The abstract of the current research is survey in terms of method and practical in terms of purpose. society

Thesis for receiving the degree of master's degree (M.A) Trend: Educational research in the fall of 2012, satellite abstract from the seventies to today in Iran, has continued to influence society and family.

Dissertation for Master's Degree in Educational Planning Summer 2019 Abstract: This research aims to investigate the quality of services of educational complexes in districts 1 and 2 of A

Dissertation for Master's Degree in Civil Engineering/ Cold Water Engineering 1392 1-1- Introduction In this chapter, an overview of the concept of climate change and its causes and the effect of this phenomenon on natural resources and

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

Dissertation of master's degree in civil engineering, structural orientation, October 1390, first chapter of generalities. 1-1 Introduction In recent years, there have been many advances in the field

Master's Thesis in Budget and Financial Management, February 2019 Abstract In recent years, the country's banking system has become obsolete and overdue due to the significant growth in the rate of receivables

Dissertation for receiving the master's degree ""M.A."" Management Shahrivar 1390 Abstract The aim of the research is to investigate the effect of establishing the proposal system on the efficiency of Merck's professional response system