Isolation and characterization of Micromonospora bacteria from various soil samples obtained around Lake Van

The objective of the study was to isolate and characterize the Micromonospora type bacteria from 24 soil samples collected from different localities around the Lake Van basin and Lake Erçek surroundings. Culturing was carried out on selective media following the completion of various physical-chemical analyses of the soil samples. Purified 65 Micromonospora isolate color grouping and numerical taxonomic analyses were carried out. In addition, complete cell protein profiles of 10 Micromonospora test isolates selected as representative of the color groups for characterization studies were determined via sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and the obtained results were presented as dendograms. Whereas the pHs of the soil samples were generally at neutral values, their organic material content varied from 4.181 to 15.248%. Colony counts in the isolation study varied between 0.9×104 and 14.3×104 cfu/g soil.Keywords: Micromonospora, numeric analysis, simple matching coefficient, SDS PAGEAfrican Journal of Biotechnology Vol. 12(21), pp. 3283-328

Is Retrograde Pinning Reliable for Multiple Metatarsal Fractures?

ABSTRACT Background: Fixation with K-wires is a commonly used method in the surgical treatment of metatarsal fractures. The application of K-wires can be antegrade and retrograde. There is a limited number of studies about the fixation of metatarsal fractures with retrograde K-wires in the literature. The present study aims to investigate the long-term results of retrograde pinning. Methods: 14 patients with at least a four-year follow-up were included in the study. The patients' union status, demographic data, duration of surgery, duration of fluoroscopy use, metacarpophalangeal (MP) range of motion, American Orthopedic Foot and Ankle Score (AOFAS) scores, and plantar keratosis formation were evaluated. Results: Complete union was observed in 13 of 14 patients. MP joint restriction was not found in any patient with a union. Symptomatic plantar keratosis was not observed in any patient. Good and perfect results were obtained in AOFAS scores. Conclusion: According to the literature, retrograde pinning in metatarsal fractures is thought to be a treatment that is difficult to apply, has high radiation exposure, and complications are observed frequently. However, in this study, we believe that retrograde pinning is a treatment method with satisfactory clinical results in long-term follow-up and fewer complications than mentioned

Üstten asılı kirişlerin yanal burkulması

Lateral torsional buckling should be taken into account during the design of overhanging steel beams. One special type of overhanging beams is the crane trolley monorails. Lateral buckling of overhanging monorails under idealized loading and boundary conditions has been studied in the past using classical mathematical procedures. This thesis aims to present a detailed investigation of overhanging monorails using finite element analysis. Effects of different loading and boundary conditions were studied in detail. It was found out that the location of loading and supports on the cross section have significant effects on the buckling capacity. Beams having different warping and torsional properties were analyzed. The effects of cross section distortion on buckling capacity were investigated for beams with single and double overhangs. The reduction in capacity due to cross section distortion has been quantified. Based on the analysis results simple design recommendations were developed for lateral buckling of overhanging monorails and they are presented herein.M.S. - Master of Scienc

ENFLASYON HEDEFLEMESİ DÖNEMİNDE PARA POLİTİKASININ HİSSE SENEDİ ENDEKSLERİ ÜZERİNDEKİ ETKİSİ: BİST ÜZERİNE AMPİRİK BİR UYGULAMA

Para politikası kararlarının hisse senedi piyasaları üzerindeki etkisi, hem önemli bir parasal aktarım kanalı olması açısından politika yapıcılarını hem de finansal yatırımcıları yakından ilgilendirmektedir. Bu bağlamda çalışmada, Türkiye’de ‘açık’ enflasyon hedeflemesi döneminde para politikası kararlarının hisse senedi fiyatları üzerindeki etkileri incelenmiştir. Johansen eşbütünleşme testi ve VAR/VEC yöntemleri yardımıyla çeşitli BIST hisse senedi fiyat endeksleri ile bankalararası gecelik faiz oranı ve Dolar–TL kuru arasındaki ilişkiler incelenmiştir. Elde edilen bulgular faiz oranı şoklarının hisse senedi fiyatlarını negatif yönde etkilediğini ve bu etkilerin kalıcı olduğunu göstermektedir