Beton İçindeki Geri Dönüştürülmüş Araç Lastiklerinin Mekanik Özellikleri

Waste tires have been an increasing problem every year due to the increase of vehicle sales. The disposal of waste tires has presented very serious problems to the human community in the world. Currently, some research has been studied on not only waste tire chips (WTC) but also recycled steel tire fibres (RSF) in concrete. Present study is focusing on the usage of WTC and RSF in concrete mixture. The different weight of WTC and RSF is mixed in concrete in order to investigate the effect on mechanical properties. By adding WTC and RSF obtained a satisfactory improvement on cracking control, compressive strength, flexural strength and also tensile strength, Moreover, compressive, flexural and tensile strength was positively affected by the addition of WTC and RSF for some mixtures. More percentage of weight fractions added gives high result in tensile strength. However, the workability of the concrete reinforced with both WTC and RSF was negatively affected.Araç satışlarının artmasıyla birlikte atık lastikler artan bir problem olmaya başladılar. Atık lastiklerin ortadan kaldırılması insular için ciddi problemler ortaya çıkarmaktadır. Günümüzde sadece atık lastik parçalarının (WTC) betonda kullanım değil, atık lastik tellerinin (RSF) de betonda kullanımı araştırılmaktadır. Bu çalışma WTC ve RFS atıklarının beton içinde kullanımını araştırmaktadır. Farklı oranlardaki atıkların betonun mekanik özelliklerine etkisi incelenmektedir. Betona lastik atıklarının katılmasıyla çatlak kontrolünde, basınç dayanımında eğilme ve çekme dayanımlarında iyileşmelerin olduğu görülmüştür. Ayrıca, eğilme çekme dayanımların WTC ve RFS atıklarının katkısıyla pozitif olarak etkilendiği görülmüştür. Atıkların yüzde olarak fazla eklenmesiyle çekme dayanımının artmıştır. Ancak, hem WTC hem de RFS atıklarının ilavesiyle işlenebirlik negatif olarak etkilenmiştir

Depolama Sürecince Bitkisel Yağların Kırmızıbiberin Kalite Parametreleri Üzerine Etkileri

Sunflower, cottonseed, hazelnut, soybean and sesame oils at the concentration of 0, 2, 4 or 6 g/100g red pepper were added into red pepper to determine the effects of the oils on color and oxidative stability during 12-month storage at room temperature. The changes in color, free fatty acid content and peroxide value were determined in 2 month intervals. Initial colors of samples were ranged between 75.26 and 79.95 (ASTA unit), and decreased as the amount of the added vegetable oils increased. Color losses were increased by increasing time for all samples while the color of the soybean oil added samples was more stable. Free fatty acid content and peroxide value of red pepper extracted oils increased significantly as the storage time increased. At the end of storage, free fatty acid content of sesame oil added red pepper was higher than that of others and the lower peroxide value was observed in the control.Ayçiçek, pamuk, fındık, soya ve susam yağları kırmızıbibere 2,4 ve 6 g/100 g kırmızıbiber oranlarında ilave edilmiştir. Yağların, oda sıcaklığında 12 ay süre boyunca renk ve oksidatif stabilite üzerine etkileri araştırılmıştır. Renk, serbest yağ asit içeriği ve peroksit değerlerindeki değişimler 2 aylık periyotlar halinde belirlenmiştir. Başlangıçta örneklerin renk değerleri 75,26-79,95 (ASTA değeri) aralığında bulunmuş ve ilave edilen yağ miktarı artıkça renk değeri düşmüştür. Bütün örneklerde renk kayıpları depolama süresinin artması ile artmış, bununla birlikte soya yağı ilaveli örneklerin renkleri daha stabil olmuştur. Kırmızı biberden ekstrakte edilen yağların serbest yağ asit içerikleri ve peroksit değerleri depolama süresinin artmasıyle önemli ölçüde artmıştır. Depolamanın sonunda susam yağı ilave edilmiş kırmızıbiber örneklerinin serbest yağ asit içerikleri, başlangıç de

MECHANICAL CHARACTERIZATION OF RECYCLED TIRES IN CONCRETE

Waste tires have been an increasing problem every year due to the increase of vehicle sales. The disposal of waste tires has presented very serious problems to the human community in the world. Currently, some research has been studied on not only waste tire chips (WTC) but also   recycled steel tire fibres (RSF) in concrete. Recent study is focusing on the usage of WTC and RSF in concrete mixture. The different weight of WTC and RSF is mixed in concrete in order to investigate the effect on mechanical properties. By adding WTC and RSF obtained a satisfactory improvement on cracking control, compressive strength, flexural strength and also tensile strength, Moreover, compressive, flexural and tensile strength was positively affected by the addition of WTC and RSF for some mixtures. More percentage of weight fractions added gives high result in tensile strength. However, the workability of the concrete reinforced with both WTC and RSF was negatively affected

Analysis of food safety and cold chain knowledge of logistics students

This study was planned and conducted in order to examine the knowledge, attitudes, and behaviors of university students in the logistics department reading about the food safety and cold chain. The study was conducted on 165 university students (59 girls, 106 boys) who are logistics associate degree students. In the collection of the data, 7 information questionnaire and 20 item attitude scale questionnaires were prepared to determine students' demographic characteristics, food safety, and cold chain knowledge, attitudes and behaviors. The obtained data were evaluated with SPSS 20.0 program using frequency (f), percent (%), t-test and one-way variance analysis (ANOVA) method. It has been determined that students have not received any prior training in the marking of "Have you been trained in Food Safety, Hygiene-Sanitation, Nutrition and Health before?" 146 students (88.5%) answered no to the question " Do you find your information on food safety satisfactory " Statistically significant differences were found in the cold chain information group that the students had given the numbers 1, 6, 7 according to their gender (p <0.05). When the average scores of the infectious disease group were examined, it was determined that they participated in all statements in general. It was determined that there was a statistically significant difference between the responses of the students to the expression 1 and 20 in the cold chain of information group according to their gender (p <0.05). It has been concluded that students are not sufficient in food safety and cold chain knowledge. It has been found that most of the students want to be trained by specialists in the field of the field. Lessons in the curriculum have resulted in food safety and cold chain related compulsory courses, or elective courses that will benefit students to be equipped on a sectoral basis after graduation

Importance and Risk Prediction of ABO Blood Group and Rh Factor in Papillary Thyroid Cancer

Objective: There are limited data in the literature regarding the potentialrelationship between thyroid cancer and ABO blood types and Rh factor.The aim of our study was to investigate whether papillary thyroid cancer(PTC) is associated with blood type.Materials and Methods: The present study included patients who presented to Dicle University Faculty of Medicine between June 2009 andDecember 2020 and were diagnosed with PTC as a result of postoperative(thyroidectomy) histopathological analysis. The control group consisted ofindividuals whose blood type was analyzed at a random blood center.Results: Of the 223 patients diagnosed with PTC, 163 (73.1%) were females and 60 (26.9%) were males. In the comparison of patients based onABO blood types and Rh factor, A Rh positive blood type was found 31%less frequently in the PTC group compared with the control group, and thusit was associated with a lower risk of PTC (OR:0.69; 95% Confidence Interval: 0.50–0.96, p=0.029).Conclusions: In our study, we found A Rh positive blood type to be significantly less frequent among patients with PTC. A Rh positive blood type canbe considered as a protective factor indicating a reduced risk of PTC

Warfarin treatment in stent thrombosis

AbstractA 62year-old male patient was admitted to the hospital due to anterior ST segment elevated myocardial infarction. Thrombotic complication developed three times during the hospitalization after primary percutaneous coronary intervention (PCI). Instent thrombus was identified despite the optimal medical therapy, new antiplatelet agents and intravascular ultrasound guided PCI. Therefore, symptoms were controlled with warfarin+clopidogrel treatment. At the third month of warfarin+clopidogrel treatment, the patient was asymptomatic and no active electrocardiographic changes were observed. Stent thrombosis developing under new antiplatelet agents constitutes a great problem and there are no clear data for the solution. We described an interesting case in which we achieved symptomatic control by warfarin+clopidogrel in the stent thrombosis developing during the treatment with dual antiplatelet therapy

PHOTOGRAMMETRIC APPROACH IN DETERMINING BEAM-COLUMN CONNECTION DEFORMATIONS

In accordance with the advances in technology, displacement calculation techniquesare ever developing. Photogrammetry has become preferable in some newdisciplines with the advances in the image processing methods. In this study, theauthors have used two different measurement techniques to determine the angles ofrotation in beam-column connections that are subjected to reversible cyclic loading.The first of these is the method that is widely used, the conventional method instructural mechanics experiments, where Linear Variable Differential Transformers(LVDTs) are utilized; and the second is the photogrammetric measurementtechnique. The rotation angles were determined using these techniques in a total often steel beam-column connection experiments. After discussing the test proceduresof the aforementioned methods, the results were presented. It was observed that therotation angles measured by each method were very close to each other. It wasconcluded that the photogrammetric measurement technique could be used as analternative to conventional methods, where electronic LVDTs are used