Background/Aim: The aim of this study was the development of a new osteoconductivity index to determine the bone healing capacities of bone substitute materials (BSM) on the basis of 3D microcomputed tomographic (μ-CT) data. Materials and Methods: Sinus biopsies were used for the comparative analysis of the integration behavior of two xenogeneic BSM (cerabone ® and Bio-Oss ® ). 3D μ-CT and data sets from histomorphometrical measurements based on 2D histological slices were used to measure the bone-materialcontact and the tissue distribution within the biopsies. The tissue reactions to both BSM were microscopically analyzed. Results: The 3D and 2D results of the osteoconductivity measurements showed comparable material-bone contacts for both BSM, but the 2D data were significantly lower. The same results were found when tissue distribution was measured in both groups. The histopathological analysis showed comparative tissue reactions in both BSM. Conclusion: Osteoconductivity index is a reliable measurement parameter for determining the healing capacities of BSM. The observed 2169 This article is freely accessible online.

Bu araştırmanın amacı; üniversite öğrencilerinin mantık kavramına ilişkin metaforlarını belirlemektir. Araştırmanın çalışma grubunu; 2016-2017 eğitim öğretim yılı bahar döneminde Gazi Üniversitesi Eğitim Fakültesi programlarına devam eden; Felsefe, Sosyoloji, Felsefe Grubu ve Sosyal Bilgiler öğretmenliği programlarında eğitim gören 118 öğrenci oluşturmuştur. Araştırmanın verileri nitel araştırma yöntemi ile toplanmıştır. Çalışmanın deseni ise, olgubilim deseni biçiminde düzenlenmiştir. Verilerin analizi, içerik analizi tekniğiyle yapılmıştır. Verilerin toplanmasında öğrencilerin her birine dağıtılan formda yer alan "Mantık…………… gibidir; çünkü…………" cümlesini yazılı olarak tamamlamaları istenmiştir. Araştırmanın sonuçlarına göre; üniversite öğrencileri mantık kavramına yönelik olarak geçerli 87 metafor üretmiştir. Bu metaforlar ortak özellikleri bağlamında 13 kategori altında toplanmıştır. Bu kategoriler ve üretilen öğrenci frekansları sırasıyla; nesne olarak (26), yol gösterici olarak (20), doğadan varlık olarak (20), süreç olarak (15), alet/araç olarak (9), insana özgü olarak/özgülük (4), eylem olarak (4), farklı dersler olarak (4), mantık kavramları olarak (4), organ olarak (4), sınıflandırma yapılamayan kategori (4), mekân olarak (3), öz/kaynak olarak (1) şeklindedir.

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Background and Aims Approximately one-third of all dialysis patients have mild to moderate malnutrition, while 6-8% have severe malnutrition. In patienst receiving maintenance hemodialysis, a low serum prealbumin is an indicator of malnutrition. Depression and anxiety are the most common psychological disorders in patients undergoing hemodialysis. The aim of this study was to evaluate the nutrional status in our hemodialysis patients and its association with anxiety and depression. Method In our cross-sectional study, 61 hemodialysis patients were evaluated with mini nutrional assessment (MNA) form, Beck anxiety/depression scale, clinical and laboratory data. Results Of 61 hemodialysis patients; 37 were male (mean age 60,8±11.7). 11.5 % of patients were malnourished. Severe depression and anxiety rates were 14.8% and 21.3% respectively. The clinical parameters of hemodialysis patients are shown in Table-1 and clinical and laboratory findings of the hemodialysis patients according to MNA scores are shown in Table-2. Malnourished patients and patients who were at risk of malnutrition; had lower urea, creatinine and prealbumin levels. Conclusion Anxiety was more prevalant in malnourished hemodialysis patients with lower prealbumin levels. Figure-1 Clinical and laboratory findings of hemodialysis patients (n=61). Figure-2: Clinical and laboratory findings of the hemodialysis patients according to MNA scores.

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