Membrane bioreactors (MBRs) are systems performing biological wastewater treatment with membranes utilized for solids separation. These systems have a wide range of applications since they offer some important advantages over conventional processes (e.g. high solids removal, low sludge production etc.). One of their main drawbacks, however, is the occurrence of membrane fouling...
AlSi7 and AlSi11 are the most commonly used materials in aluminum alloy wheel production. The main difference is the heat treatment application; for wheel production AlSi7 is usually used in heat treated form while AlSi11 is not. Heat treatment processes play a vital role on production costs. More than fifty percent of aluminum wheels are heat treated however the exact value...
In this study, influences of cutting parameters in hard turning of hot work tool steel by applying minimum quantity lubrication (MQL) were investigated and optimized by using Taguchi methodology. Firstly, the machinability experiments on hardened AISI H10A hot work tool steel with CBN inserts were performed under the MQL condition. The experiments were carried out by Taguchi ’ s...
Wheat is one of the main nutrients used in the world. Consumption of foodstuff produced from quality wheat is of great importance for healthy generations. It is necessary to separate the high and low quality wheat. In this paper, a new recognition method for quality wheat and unclassified wheat is presented. The most distinctive feature for determination of wheat quality is its...
Titanium alloys exhibit superior properties such as high strength-to-weight ratio and corrosion resistance but these alloys possess poor machinability. To overcome this disadvantage, new machining methods (Ultrasonic Assisted Machining, Hot Machining etc.) are developed. Hot Ultrasonic Assisted Turning (HUAT) is a new machining method which changes the cutting system between tool...
New methods of energy saving are being researched by many scientists. An important research area in these studies are insulating paints. Silica aerogels are one of nanostructured insulating materials with low thermal conductivity, high surface area and low density. The main aim of this project is to study on alternative paint insulator by producing silica aerogel. In this...
Accurate determination of the proper distribution and parameters of this distribution according to the wind characteristics of the zone is vital for wind energy investment. In determining a wind energy potential belonging to a region, meteorological wind speed measurements have a great proposition to take place within a certain statistical distribution. In our study, the wind...
The objective of this research is to investigate the effect of pouring temperature on the microstructure of the cast iron. The pattern was designed with 300 mm of width and the thickness variations are 25 mm and poured at five different temperatures; 1300, 1325, 1350, 1375 and 1400 o C. Several cast irons, prepared with different chemical compositions and microstructures (three...
Masonry structures are constructed by joining masonry units (brick, stone, marble etc.) with mortar. Various methods are used for modeling of masonry walls of the structures. Micro modeling and Macro modeling are two diverse modeling techniques. In this study, these two modeling strategies are analyzed on a solid unreinforced masonry shear wall numerically. The models are...
The unsustainable formation of fossil fuels, increase the interest on different resources and this leads to greater emphasis on clean resources. Solar energy is one of the popular sources among the renewables. Electricity generation from PV panels directly related to the solar radiation value measured on surface of the panel. Modeling of solar radiation is important due to...
Forced convection SiO2/water nanofluid flow and heat transfer was numerically performed in 180-degree three-dimensional curved duct with square cross section under steady and laminar flow conditions in this investigation. Dean number was changed from 102 to 898. All surface of curved duct was exposed to uniform and constant heat flux . Nanoparticle volume fractions was ranged 1.0...
In recent years, power generation from photovoltaic (PV) system has received great attention compared to other renewable sources. Due to nonlinear characteristics of PV cells, the maximum allowable power level from PV panel changes with atmospheric parameters which are solar irradiance and temperature. In this context, maximum power point tracking (MPPT) algorithms are essential...
Near fault ground motions excitations have specific characteristics comparing to regular earthquake excitations. Near fault ground motions contain directivity pulses and flint steps in different directions and these excitations are the reason of more damages than regular excitations for structures. A successful method to reduce structural vibrations is the usage of tuned mass...
In this study, the exact first five natural frequencies of three-span Timoshenko beams on Winkler foundation are calculated using dynamic stiffness formulation. Different elastic foundation spring constants and different beam cross-sections are used to reflect their effects on natural frequencies. Moreover, the natural frequencies are also calculated via structural analysis...
In this study, effects of inserting twisted tape into a horizontal tube and adding TiO 2 nanoparticle to water on heat transfer enhancement performance and pressure drop penalty are investigated with using CFD program. Analyses are carried out with Reynolds number of in range from 7860 to 15860, and constant heat flux of 50kW/m2K is applied to wall of the tube. To simulate...
In order to investigate the effect of different sowing times and growing techniques. On yield and earliness of two sweet corn varieties, this study, was done in Kahramanmaraş conditions in 1997 – 1998 growing years. Kahramanmaraş research station conditions. Field trials arranged in split – split plot design with there replications, varieties sowing times and growing techniques...
Recently, a lot of progress have been obtain towards progress on the quality and quantity in agriculture. The advances and development in agriculture depend on mechanisation and the development on the soil characteristic which also help to increase the product efficiency. This study aims to determine some Turkish low rank coal samples for applications in the agricultural sector...
The by-products resulting from the agricultural productions are arised in extrem quantities every year. Some agricultural by-pruducts such as olive press waste, green wallnut husks, tea wastes, coffee pulp etc. have been recognized as phenolic-rich wastes. The high polyphenol content in these wastes could have negative impact on soil and flora, if they are not disposed properly...
In this study, feasibility analysis was done with a program that created a simulation model in the MATLAB GUI environment for the PV system installation in the production of electricity requirement of a house in Turkey conditions. The energy consumption is calculated through the data of the operating hours in a day and the number of running days in a year which entered by user...
All kinds of materials that become useless during production activities, damage the environment and must be exterminated are generally called waste. Waste is also defined as all materials thrown away by its manufacturer or a person or entity who owns it and causes a harmful change at environment. The most important of the solid, liquid and gaseous wastes produced in the printing...
The robotic systems firstly developed in industrial production domain. But, in countries, in which the number of agricultural workers is limited and the costs are high, there is a tendency towards robotic technology in agricultural production. For this reason, the robotic system implementations started to seem in many agricultural activities. In the present study, the robotic...
Boronizing and titanium diffusion were applied to an interstitial-free steel substrate separately and one after another. Boronizing was carried out in a liquid environment by applying an electric current, but titanium diffusion was performed in a closed chamber containing solid chemicals. The generated single-layered and multi-layered diffusion coatings were characterised by...
Macrophyte pond has developed strongly in the field of wastewater treatment for irrigation in rural areas and small communities. Their association allows, in some cases, to increase the hydraulic capacity while maintaining the highest level of quality. The present work is devoted to the treatment of domestic wastewater under climatic conditions of Algeria (semi-arid) through a...
This study presents the results of chromate adsorption upon chitosan modified with thiourea, glutaraldehyde. Firstly modified chitosan was synthesized by using thiourea, glutaraldehyde and chitosan at different molar ratios and adsorption capacities were compared to the original chitosan. The modified chitosan showed higher Cr (VI) retention performance than the original chitosan...
Heat transfer is a very important precaution for proper design and safe operation of electronic packages and systems. Impinging jets are usually used to solve thermal problems of electronic components in industry due to providing a good heat transfer performance. In this study, cooling of copper plate with five square patterned surfaces inside a rectangular channel comprising of...
