Uçucu Külün Yapı Malzemelerinin Mukavemeti ve Bağlayıcılığına Etkisinin Araştırılması

Dünyada yaşanılan iklim değişikli nedeniyle enerji temini gibi hafif yapı malzemelerinin kullanımına yönelik araştırmalar son yıllarda hız kazanmıştır. Tasarım uygulamalarının birçoğu iklimi de dolaylı olarak etkileyecek nitelikte olduğundan yapılan araştırmalar, fosil yakıtlara bağlı olmaksızın, düşük karbonlu bir geleceği teşvik etmeye yardımcı olacaktır. Yapı malzemelerinde aranan özellikler; ekonomiklik, dayanım, insan sağlığına ve çevreye olumsuz etkisinin bulunmamasıdır. Türkiye’de kömür yakıtlı termik santrallerde 2017 yılında 63 milyon ton linyit elektrik üretimi amacıyla tüketilmiştir. Yakılan kömürlerden elde edilen uçucu küller, depolama alanlarında depolanmakta rüzgar, yer altı ve yer üstü suyu ile taşınarak çevre ve insan sağlığını olumsuz yönde etkilemektedir. Bu çalışmada, puzolan özellik gösteren, kireç oranı yüksek ve atık malzeme nitelendiğinde Yatağan Termik Santrali uçucu külü kullanılmıştır. Standart bağlayıcı malzemeler olarak bilinen çimento, kireç ve alçı yerine kullanılabileceği düşünülen uçucu külün bağlayıcı özelliği ve malzemenin mukavemeti üzerine araştırma yapılmıştır. Deneysel çalışmalarda üretilen 4x4x16 cm ebatlarındaki numunelere basınç ve eğilme deneyleri uygulanarak mekanik dayanımları belirlenmiştir. Deneyler sonucunda 4.4 nolu numunede en yüksek eğilme dayanımı 2,39 MPa, 3.1 nolu numunede en yüksek basınç dayanımı 10,03 MPa olarak bulunmuştur. Yapılan çalışmalar sonucunda puzolan özelliğe sahip uçucu küllerin bağlayıcı etkisi görülmüş ve dolgu malzemesi olarak mekanik dayanımda artış sağladığı tespit edilmiştir

Impacts of COVID-19 on Agricultural Production Branches: An Investigation of Anxiety Disorders among Farmers

The aim of our study was to determine the level of anxiety among farmers in different agricultural branches in Turkey during the COVID-19 outbreak and to examine its association with socioeconomic concerns and social support variables. Based on a survey of 2125 Turkish farm enterprises, this study examined effects on agricultural production during the implementation of COVID-19 restrictions among agricultural branches. The Generalized Anxiety Disorder Scale and Oslo Social Support Scale were used in the study. Survey data were collected from farmers by phone. Age, place of residence, income status, agricultural branches, land size, the use of trucks, animal husbandry, access to technical support from agricultural organizations, access to support from neighbors, and social support level were found to have a significant effect on anxiety level (p < 0.05). The anxiety levels of farmers engaged in animal husbandry and vegetable farming were found to be higher than those in other agricultural branches. The lowest anxiety level was observed in farmers engaged in cereal production. Taking these results into consideration is important for preventing problems in agricultural production. If anxiety levels are not improved, it is predicted that farmers in agricultural production branches with high levels of anxiety will move towards branches with lower levels of anxiety

Effects of Boron Phosphate Additive on Ceramics with Anorthite Phase

In this study, the anorthite phase was chosen as a ceramic type that can withstand thermal shock. First, boron phosphate was synthesised, boron phosphate was calcined at 1000°C and characterized by XRD and chemical analyzes. On the other hand, in the phase diagram, the most suitable eutectic points covering the anorthite phase (CaO, Al2O3 , SiO2) and at the lowest temperature at which anorthite can form are selected. 6 mixtures were prepared using wollastonite, kaolinite and calcite. The 6 mixtures prepared were separated into two equal parts and the second parts were added of BPO4 10%. The mixtures were pressed at the same pressure and cooked under the same conditions and at the same heating rate in the electric oven at 1050, 1100, 1150 and 1200°C. DTA and TGA analyzes were applied to the samples before sintering, and XRD analyzes were applied to the sintered samples. According to the test results, the addition of the synthesized BPO4 has shown that the anorthite phases are formed at temperatures well below the theoretical formation temperatures without swelling

Two cases of priapism associated with Quetiapine

Priapism is a painful, prolonged erection that occurs without any sexual stimulation. It is an emergency that may lead impotence, urinary retention, and gangrene as long-term devastating consequences. Priapism is attributed to the blockage of alpha-1 adrenergic receptors in the corpus cavernosum and associated with the use of typical antipsychotics, notably, thioridazine. Atypical antipsychotics are increasingly being prescribed and not frequently considered to cause priapism. This side effect has been reported in patients taking ziprasidone, risperidone, clozapine, quetiapine, aripiprazole and olanzapine. The intensity of binding to alpha-1 adrenergic receptors varies among all antipsychotics; quetiapine has an intermediate affinity. Priapism may be an idiosyncratic reaction which is correlated neither with the dosage nor the duration of use of antipsychotic drug. Quetiapine has been implicated in causing priapism in a limited number of reports. A history of prolonged erections may be a possible predictor of priapism during the use of quetiapine. We report two cases of priapism associated with quetiapine and a brief review

The validity and reliability study of the Turkish version of the Brief Social Phobia Scale

ozdel, kadir/0000-0002-3712-9444; Orsel, Sibel/0000-0003-0184-7038; Ozdemir, Ilker/0000-0002-3531-3280; KURU, ERKAN/0000-0003-1949-4007WOS: 000461499800008OBJECTIVES: Social anxiety disorder (SAD) can be described as a clear and constant fear of the individual for being judged by others in the social milieu and being mocked by others. Although SAD is a treatable disorder, there is a diagnostic confusion due to many factors such as the difficulty in recognizing the symptoms of the disease. There are several scales currently available for SAD symptom measurement; however, some of them are long scales and should be answered by the patient and do not include physiologic manifestations. The Brief Social Phobia Scale (BSPS), which is a scoring system scored by the clinician, has an important place among these scales. There are three different subscales, which are fear, avoidance, and physiological symptoms on the BSPS. The aim of this study is to test the validity and reliability of the Turkish version of the BSPS. METHODS: The BSPS, sociodemographic data form, Liebowitz Social Anxiety Scale (LSAS), Spielberger State-Trait Anxiety Inventory (STAI I-II), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), Global Assessment of Functioning (GAF) Scale were applied to 55 patients with social phobia (31 males, 24 females) who met the Diagnostic and Statistical Manual of Mental Disorders IV (DSM-IV) criteria. Internal consistency of the scale was measured and the factor analysis was performed after applying Kaiser Meyer Olkin and Bartlett tests to assess the construct validity. To test the concurrent validity of the scale, Pearson correlation coefficient was computed between the BSPS and the LSAS. Its correlation with STAI I-II, BDI, BAI, and GAF was also investigated. RESULTS: The Turkish version of the BSPS showed sufficient internal consistency. As a result of the factor analysis, a five-factor structure that accounts for 71.4% of the total variance was obtained and the loading of factors differs from the original study. Moderately strong correlation was found between the BSPS and the LSAS scores. There was a mild correlation between the total score of the BSPS and the STAI-I and BDI. There was a moderate correlation between the total scale score of the BSPS and the STAI-II and BAI scores. CONCLUSIONS: As a result of the validity and reliability studies, it has been determined that the Turkish version of the BSPS can be used as a valid and reliable measurement tool in detecting SAD. It was found that there were unique anxiety findings that distinguish SAD from the other anxiety disorders. It is thought that the inclusion of such important symptoms within the applied scale will also benefit clinical practice