Abstract: In this study, the effects of IBA doses (0, 500 and 1500 ppm) and root thickness of the R. damascena Mill cuttings on rooting rates, root counts, root lengths and shoot numbers were investigated. The results showed that IBA doses significantly affected rooting rates (p<0.05). The highest rooting rate (77.67%) was obtained from thick root cuttings with 500 ppm IBA dose application. The highest root number per cutting was found as 6.00 in thick cuttings and cuttings having no IBA application. The longest root branch per cutting was determined to be in the thick root cuttings and control cuttings (7.93 cm). The average number of root branch per cutting was determined as 0.77 in thin root cuttings and control cuttings. To conclude, R. damascena can easily be propagated with root cuttings with appropriate IBA doses, suggesting that the thicker root cuttings should be chosen for R. damascena propagation.

Abstract: This thesis analyzes the behavioral characteristics of network users on the campus network. After capturing and processing communication data and recovering sessions, we can know the group behaviors of the campus users. What’s more, the use of the diskless computer among the cadets can also be seen from this analysis. On the one hand, such analysis can offer the theoretical basis for campus network. On the other hand, this work can help the administrative know more about the cadets’ study situation on the campus network and make better management. To some degree, the analysis reflects the importance of network users’ behavior analysis network management.

Abstract: In this study, it is aimed to determine the factors causing visual pollution in Niğde Ömer Halisdemir University campus, to remove the visual pollution and to take measures to prevent it. A survey was conducted to determine the perceptions of the academic and administrative staff and students of the Niğde Ömer Halisdemir University about the visual pollution of the campus. As the survey study was planned to represent the whole campus, it was aimed to include 2 academicians, 2 administrative staff and 2 students in each department in equal proportion to all faculties within the campus. The questionnaire was conducted by face-to-face interview with 100 people at random selection. The survey results were evaluated in the SPSS package program. As a result of the study, the opinions of the students, academic and administrative staff of Niğde Ömer Halisdemir University about the visual pollution of the structural and plant equipments in the campus have been determined. Preventive measures have been developed to eliminate visual pollution in designated areas.

Abstract: It would be required to impart hydrophobic and hence antimicrobial property to inherently hydrophilic ceramic wall tiles in order to reduce health risks. For this purpose an industrially applicable ceramic wall tile opaque glaze was modified by the addition of the various organic materials. The organic matter included in the industrial glazes most probably acted as agents leaving pores behind and changing the liquefaction temperature of the glaze on the pore borders, and forming protruding microscale surface structures by burning and gasifying out during gloss firing. The optimum temperature range for gloss firing of the modified industrial opaque wall tile glaze was determined as 960-980°C by thermal microscope measurements and TG analysis. The SEM images of the surfaces revealed microscaled surface morphologies which might be potentially instrumental in the hydrophobic surface formation due to the trapped air gaps between the tile surface and the sessile water drops in accord with Cassie-Baxter model. The surface topography obtained in this way by polyvinyl butyrate and modifications provided hydrophobic contact angles.

Abstract: Diesel engines are used around the globe in many transportation and power production activities. These engines consume large amounts of fuel and produce many dangerous pollutants. If we add to this all, the coming day for the depletion of oil, all these things together require consideration of alternatives to reduce the consumption of diesel oil and its pollutants. In this study, we navigate through the scientific research space and review the latest findings of science in this regard. There are substitutes for diesel, including fully compensated, or mixing with it to reduce pollutants. All these alternatives have their positives and negatives. To this day, diesel fuel is still dominating the ignition engines and has not yet achieved a competitive advantage in terms of combustion efficiency.

Abstract: In order to develop the sustainability of bridge engineering design in many design offices of underdeveloped countries, this work outlines design guidelines by examining the behavior of bridges vertical displacement in relation to several parameters such as the moving speed, the track irregularities, the span-length, the elasticity modulus, the cross-section geometry and the material damping. A simply supported Euler-Bernoulli bridge-beam model coupled to a multiple moving point loading under different conditions is developed based on the Hooke’s law, the Navier’s hypothesis and the Saint-Venant’s principle. Obtained results give a deeper understanding on the influence of these parameters in the initial design, and show that the use of a single dynamic magnification factor alone, for different bridge parameters, is not technically optimal for an improved dynamic analysis of existing and under-design bridges, and that local Design Bureau should implement a more sustainable design methodology to tackle uncertainties in bridge behavioral responses for its wider understanding.

Abstract: The addition of filler materials to a polymer is a common practice to improve strength, stiffness, toughness, hardness, conductivity, wear resistance, as well as reducing the processing cost significantly. In this study the effect of waste graphite as a cost effective reinforcement in epoxy matrices for improving the mechanical properties was investigated. As the graphite content increased bending modulus, hardness and bulk density increased and bending strength and total porosity decreased.

Abstract: An accurate formulation to predict the thermal post-buckling load carrying capacity of orthotropic circular plates based on von Kàrmàn nonlinearities is reported in this paper. The governing differential equations of circular plates with orthotropic material properties are converted into linear differential equations employing the nondimensional parameters. The radial edge load is evaluated by assuming suitable admissible functions for the lateral displacement. Simply supported and clamped boundary conditions are considered in this study. The Rayleigh - Ritz method of total potential energy gives the values of linear buckling load. The thermal postbuckling load of orthotropic circular plates is evaluated using the radial edge load and linear buckling load. The influences of suitable admissible functions on the lateral displacement are also discussed. The numerical results obtained from the present investigation are compared with the known results reported in the literature and are in good agreement within the engineering accuracy. The error percentage of the results has been predicted and a maximum error is found out to be 4.02 % for simply supported and 3.67 % for clamped boundary conditions respectively.

Abstract: This study was carried out to determine the possibilities of vegetative propagation of the widespread 5 Rhododendron species (R. ponticum L, R. luteum Sweet, R. smirnovii Trautv, R.ungernii Trautv, and R. caucasicum Pallas) in Turkey. The plant material was obtained as shoot tip cuttings from Black Sea Region flora at three times (June, July and August). The respective cutting materials were subjected to 5 Indole-3-butryic acid (IBA) doses (0, 4000, 8000, 12000 and 16000 ppm) and planted in acidic peat and perlite mixture under mist propagation in greenhouse condition. Sixty cuttings (20 cuttings with 3 replicates) were used for each treatment. Totally, 300 cuttings were used. Results showed that three rhododendron species (R. ponticum, R. luteum and R. smirnovii) were successfully rooted but the others (R. ungerni and R. caucasicum) were not. Only 16.000 ppm IBA gave the highest rooting rate (46.67%). The highest rooting rates were obtained in R. ponticum as 46.66 % from August cuttings, in R. luteum as 38.33 % from June cuttings and R. smirnovii as13.33% from August cuttings. To conclude, when the cutting materials were obtained in summer season, their rooting rates were quite low in Rhododendron species, suggesting that when it is difficult to reach these plants in heavy winter conditions, it can be worked on summer cuttings even low rate of rooting.

Abstract: In this study, it was aimed to determine certain microbiological characteristics, mineral contents heavy metal levels in 16 Aho cheeses of Sürmene and Araklı districts of Trabzon and to determine the suitability of the Turkish Food Codex. Mineral ingredient and heavy component contents have been identified based on ICP-OES implementation and in mg kg-1 unit type. In Aho cheese samples the average levels of the mineral contents and heavy metals in the Aho cheeses were determined as; calcium 3628.30±355.07 mg kg-1, potassium 461.20±33.48 mg kg-1, sodium 8463.75±658.97 mg kg-1, magnesium 163.42±10.96 mg kg-1, iron 5.46±1.29 mg kg-1, zinc 27.04±2.62 mg kg-1, copper 1.358±0.13 mg kg-1, manganese 0.31±0.17 mg kg-1, phosphorus 4187.05±327.60 mg kg-1, lead 0.174±0.04 mg kg-1 and cadmium 0.028±0.04 mg kg-1. The microbiological values obtained were as follows; yeast and moulds 4.12±0.09 log cfu g-1, total aerobic mesophilic bacteria 6.72±0.11 log cfu g-1, Lactobacilli bacteria counts in the MRS agar 6.42±0.05 log cfu g-1. Coliforms and Staphylococcus aureus were <10 in all samples. As a result, it was determined that the mineral contents and heavy metal levels of the cheese samples were within the limits determined by the Turkish Food Codex for some foods.

Abstract: The Karayaka sheep is the most populous sheep breed in the Black Sea region of Turkey and a significant portion of the breed (30-35%) has been raised for centuries in Samsun province. For this reason, we aimed to investigate the genetic diversity of Karayaka sheep raised in Samsun, Turkey. The blood samples used in this study were collected from unrelated animals and were analysed using nine microsatellite markers. A total of 72 alleles were determined with an average of eight alleles per locus. The highest number of alleles (12) was observed for locus BM1314, while the lowest (4) was observed for locus CSSM47. The expected heterozygosity value (He) ranged from 0.654 at locus BM757 to 0.867 at locus BM1314, with an average of 0.757, whereas the observed heterozygosity (Ho) ranged from 0.125 at locus CSSM47 to 0.438 at locus BM757 and HUJ616, with an average of 0.329. The Wright’s fixation index (FIS) values ranged from 0.360 at locus BM757 to 0.833 at locus OARFCB304, with an average of 0.572. The results obtained from this study showed that Karayaka sheep population has a high level of genetic diversity and the studied markers were highly informative.

Abstract: In this study, the physico-chemical properties of hot spring water of Bursa province and Erikli cold water were investigated. Erikli cold water is bottled for commercial use. Water samples were collected in-situ for testing and some physical measurements were carried out. Other major analyses were carried out in the geothermal laboratory. Water samples were evaluated by both field observations in-situ and also geological and petrographical observations. Data collected were evaluated by using Aqua-Chem software program in consideration of field observations and the geology and petrography of the sampling area. Data obtained from Aqua-Chem and field observations of the sampling area in consideration of geology and petrography were used for interpretations of hot water samples and cold spring water. Consequently, water samples were characterized according to sources of magma or meteoric waters with the aid of isotope studies and cation and anion data. Also, information on water circulation leading to water-rock interaction where the water passes the Bursa Geothermal system helped the interpretation. The water sample radioactivity results were shown to be within acceptable limits. Water resources were determined for Bursa province and vicinity using Piper diagram. Waters in Cekirge, Kaynarca, Kükürtlü, Zeynine, Dumbuldek, and Inegol Oylat contain Ca-Mg-Na-SO4, Na-Ca-SO4, Na-Ca-HCO3-SO4, Ca-Na-Mg-SO4, Na-Ca, Ca-SO4-HCO3 ions respectively.

Abstract: The world suffers from air pollution from burning fossil fuels to produce energy. Cars consume a large proportion of fuel, especially spark ignition engines. The pollutants produced by these engines can be reduced using new types of alternative fuels, including hydrogen gas. Hydrogen is characterized by its high speed and high resistance to knock, making it an acceptable option for use in spark ignition engines. Among the disadvantages that prevent the use of hydrogen is its ease of ignition, safety requirements, lack of energy on the volume basis. In this study, we are trying to review a number of new researches which have tested practically and theoretically the use of hydrogen in ignition engines.

Abstract: The present study was conducted with the aim to investigate, antifungal activities in vitro conditions of the essential oil retrieved from laurel (Laurus nobilis) and myrtle (Myrtus communis L.) on three different isolates of the chickpea blight disease (Ascochyta rabiei). The antifungal activity study was conducted in 60 mm in diameter petris with 10 ml PDA environment, and the plantation of fungi was done in the middle of the petri in a diameter of 5 mm. The effected of essential oil was added to sterile blotting paper attached on the lids of the petris in 0,5, 1, 2, 4 ve 8 μl doses with the help of a micropipette. The petri lids covered with parafilm were incubated in 23 ° C for 14 days. Measurements were done after the incubation period and the percentage of mycelial growth was calculated. The results of the study revealed that the essential oil obtained from Laurus nobilis inhibited the disease growth of isolates-1, isolates-2 and isolates 3 in the dose of 8 μl by 72,53%, 67,37 % and 45,8%, respectively. It was found that the essential oil obtained from Myrtus communis L inhibited the disease growth of isolates-1, isolates-2 and isolates 3 in the dose of 8 μl by 45,19%, 57,35% and 39,36%, respectively. Furthermore, it was established that the fungus growth was inhibited in different degrees in the different doses. It was concluded that the essential oil of Laurus nobilis and Myrtus communis L possess a high rate of antifungal activities in vitro conditions.

Abstract: In the present study were studied microbiological qualities of drinking water obtained of Sivas. A total of 100 water samples (once week, during six mounth), collected from ground water and 3 tankers filling from same ground water in spring and summer (March-August), were used as material. The samples were evaluated microbiologycal (total mezophile aerobe bacteria, enterobacteria and E. coli). According to the analysis results; all of the examples were found total mezophile aerob bacteria. The enterobacteria in samples were detection between <10- 103 cfu/ ml. The sample of 12 was analyzed E. coli. Results of, microbiological analysis of the water sources performed at regular intervals for public health. Because, it is very important to transmitted by water diseases. This is the first step of the protective precautions.