Download more than 56 examples of thesis, proposal and project topics about polyurethane additive in editable WORD file format at undergraduate, graduate and doctoral levels for use and reference in research, articles, theses, student and academic projects.
Dissertation for master's degree in the field of civil engineering, road and transportation, the abstract of asphalt failures is one of the problems that are the concern of road and transportation engineers today, and every year huge costs are spent on the maintenance and repair of asphalt roads. Many efforts have been made to increase the strength and life of asphalt, among ...
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.
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 ...
Master's thesis in the field of chemical engineering Kidney stones are one of the most common diseases in the world, most of its crystals consist of calcium oxalate crystals. Therefore, it has been a long time that the investigation of effective substances in controlling this disease through the control of calcium oxalate crystals has been considered. The purpose of this ...
Master's thesis in the field of chemical engineering, abstract of the effect of additives on crystal morphology in the crystallization process of calcium oxalate. Kidney stones are one of the most common diseases in the world, and most of its crystals are composed of calcium oxalate crystals. Therefore, it has been a long time that the investigation of effective substances in ...
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
Dissertation for Master's Degree, Business Management (International Marketing) Abstract Today, the speed of changes and the intensity of competition among organizations in various industries have made them face limited resources, and the stability and survival of organizations depends on achieving a competitive advantage in cost, quality, innovation, and delivery ...
Dissertation for Master's Degree in Civil Engineering - Structures Abstract: One of the important problems in seismic design and implementation of buildings is the significant dead weight used in it. Therefore, in the case of using lightweight concrete that has favorable mechanical properties, significant benefits can be obtained, including a reduction in dead load and ...
Master's thesis in the field of civil engineering, structure orientation. Abstract: In this study, the effect of some effective parameters on the strength of polymer concrete based on epoxy resin, including hardener, filler, and solvent, has been investigated. Rice husk ash and broom stalk ash were used as fillers and acetone-toluene mixture with a ratio of 50-50% was used as a ...
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-Soil Field Abstract Dense clay layers are used as one of the most common impermeable layers in most geotechnical structures such as earthen dams and municipal and radioactive waste disposal centers. Due to special geotechnical characteristics, these layers are damaged by cracking during their lifetime, these cracks increase the permeability of the layer ...
Dissertation for master's degree in civil engineering, structural orientation. Abstract Good bond strength between the old and new concrete surface is a key factor in the performance of concrete repairs. The purpose of this thesis is to investigate and evaluate the bond strength between the surface of the old concrete and the added concrete. In this thesis, a laboratory research ...
Civil Engineering Master's Thesis - Soil and Foundation Mechanics Abstract From the past until now, one of the most economical methods to improve the mechanical properties of clay soils has been stabilization by means of additives such as lime and cement in construction projects such as road construction and consolidation of building foundations. Also, with the passage of time ...
Dissertation for receiving a master's degree, specialization: food industry, abstract of osmotic dehydration, the process of removing water is based on the placement of food materials in a hypertonic solution. In this research, the combination of osmotic dehydration process for carrot pieces with a thickness of 0.5 cm at a temperature of 60 degrees Celsius and time intervals of ...
Dissertation for receiving a master's degree, specialization: food industry, abstract of osmotic dehydration, the process of removing water is based on the placement of food materials in a hypertonic solution. In this research, the combination of osmotic dehydration process for kiwi pieces with a thickness of 0.5 cm at a temperature of 60 degrees Celsius and time intervals of ...
Master's thesis in the field of chemical engineering (simulation and process control) abstract design of the control system for the fluidized bed reactor for the production of linear light polyethylene of the LLDPE unit of Jam Petrochemical under the license of Basel and Spherilene technology with an annual production capacity of 300,000 tons of product is one of the largest ...
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 ...
Dissertation for Master's Degree in Analytical Chemistry Abstract: Today, modern catalysts are used in the petrochemical industry for various reactions. Zeolites in the more advanced form of ""nano zeolite"" are very important in this regard due to their high surface area. The aim of this research is to provide a ""spectroscopy-chemimetry"" method and to provide an optimal ...
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, ...
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 ...
Dissertation for M.S.c Master's Degree Orientation: Applied Abstract: In recent years, semi-conducting nanoparticles have attracted a lot of attention due to their electrical and mechanical properties, which result from limited quantum effects compared to their counterpart materials. Among semiconductor nanoparticles, ZnO nanoparticles have higher efficiency. To achieve higher ...
Dissertation for Master's Degree 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 ...
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. ...
Doctoral thesis in the field of chemical engineering. Abstract The study of the effective parameters in the synthesis of silver nanoparticles by the inverse microemulsion method of metallic silver nanoparticles is of interest due to their use as catalysts, antimicrobial agents and biosensors. The practical use of silver nanoparticles is highly dependent on the size distribution ...
Master's Thesis of Chemical Engineering-Biotechnology Abstract Lipase is a carboxylic ester hydrolase enzyme that acts on triacylglycerol to release fatty acids, glycerides and glycerol. The discovery of the ability of lipase to catalyze the esterification reaction started a broad chapter in the field of this enzyme's functions. In this study, with the knowledge of the ability ...
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 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 ...
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 ...
Master's thesis in the field of mechanical engineering - energy conversion trend Abstract: In this research, the turbulent flow of a non-Newtonian nanofluid in a microchannel with a circular cross-section is simulated. First, the types of classification of microchannels, the methods of making microchannels, as well as the advantages and challenges of using microchannels are ...
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 ...
Dissertation for Master's Degree in Agricultural Engineering (M.Sc) Major: Agriculture Abstract In order to investigate the effect of different sources of nitrogen and organic fertilizers on the yield and yield components of Single Cross 704 corn in the experimental area of ??Dehleran in the summer of 2012, it was studied as a split-plot experiment in the form of a randomized ...
Dissertation for M. Sc. Abstract Nitrates, nitrites and ascorbic acid are present in a wide range of foods. Vegetables are an important source of nitrate, nitrite and ascorbic acid absorption in the diet. The purpose of this research is to investigate the effect of freezing and cooking process on the amount of nitrate, nitrite and ascorbic acid of commonly consumed vegetables. ...
Master's Thesis in Food Industry (M.Sc) Abstract Walnut kernel is an edible substance that has a lot of fat, protein, sugar and starch, but due to various reasons, it undergoes physical and chemical changes very quickly and loses its quality. The purpose of this study was the effect of packaging and storage conditions on the quality and shelf life of walnuts. In the research ...
Dissertation for M.Sc Mechanical Engineering - Energy Conversion Orientation Abstract: In this research, the turbulent flow of a non-Newtonian nanofluid in a microchannel with a circular cross-section is simulated. First, the types of classification of microchannels, the methods of making microchannels, as well as the advantages and challenges of using microchannels are stated. ...
Abstract In the present study, the effect of conditions (boiling) and storage time (9 days) on the content of ascorbic acid, nitrate and nitrite of 5 vegetable samples (broccoli, red cabbage, white cabbage, chives and mushrooms) were evaluated and the results were analyzed by spss 16.0 software. The results obtained from the statistical analysis showed that among the samples, ...
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, Food Science and Technology, Food Technology, Abstract The purpose of this study was to investigate the antimicrobial effect of cactus seed extract as an alternative to chemical preservatives on the chemical, microbial and sensory characteristics of French salad dressing. The tested treatments are French sauce ...
Abstract Background and Purpose: Emulsions are an important part of most food, pharmaceutical and cosmetic systems, which are very important in various industries due to their special rheological and physicochemical properties. But the main limitation of these systems is their thermodynamic instability, which causes phase separation over time. In this research, the effect of ...
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 ...
Dissertation for Master's Degree in Animal and Poultry Nutrition Abstract This research was conducted in order to investigate the effect of different levels of savory essential oil, including levels (0 mg, 200 mg, 400 mg) and type of grain (maize and barley) on the process of rumen fermentation, animal performance and some blood parameters of goats native to West Azerbaijan. In ...
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 ...
The thesis (or dissertation) for receiving a master's degree in the field of food industry, majoring in food chemistry. The abstract of this study is designed to compare the chemical composition and antioxidant effect of laboratory cinnamon essential oil [1] and two commercial essential oils [2]. In order to identify the chemical compounds of the essential oils, a mechanical ...
Thesis for obtaining a master's degree in the field: agricultural engineering, horticultural sciences, specialization: physiology and breeding of fruit trees. Abstract: Drought stress is one of the most important factors limiting the growth of plants in arid and semi-arid regions of the world, such as Iran. The importance of using water resources and the occurrence of recent ...
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 ...
Master's Thesis of Food Science and Industry Abstract The purpose of this research was to evaluate the effect of adding capcarrageenan and sodium alginate on the quality characteristics of soy burger during storage time of 60 days at -20°C. For this purpose, cooking characteristics, sensory characteristics, pH, tissue profile analysis were investigated every 30 days. The ...
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 ...
Abstract: Research in the field of heat transfer of suspensions with nanometer-sized solid particles in the base fluid has started in the last decade. Recent research in the field of nanofluids has shown that the addition of nanoparticles causes a significant increase in the heat transfer of the suspension. Another common way to improve the thermal performance of devices is to ...
Dissertation for M.Sc degree, major: food science and technology. Abstract To conduct this research, samples of spinach (Damghan), tomato (Dezful), lettuce (Varamin), celery (Tehran), zucchini (Gorgan), eggplant (Qasrshirin) were purchased from Damghan market in June 2013. Nitrate, nitrite and ascorbic acid concentrations were measured in the edible parts of each sample. The ...
Dissertation for Master's Degree in Mechanical Engineering (Energy Conversion) Abstract In this thesis, the mass and heat transfer of water-aluminum oxide nanofluid in a two-dimensional porous medium under a magnetic field and in the vicinity of a vertical wall has been investigated. The boundary wall can be permeable or impermeable. The concentration and temperature of the wall ...
Abstract Nowadays, due to the resistance of microorganisms against antibiotics, it is important and necessary to use medicinal plants to obtain new compounds to overcome them. The aim of this study was to investigate the antimicrobial effects of methanolic and blue lime extracts against bacteria and mold. In this research, lemon peel extract was extracted by two methods, aqueous ...
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 ...