Hakan Yalçin

The effects of dynamization and destabilization of the external fixator on fracture healing: A comparative biomechanical study in dogs

This study compared the effects of axial dynamization and staged destabilization on fracture healing. Bilateral midshafts of canine tibiae were osteotomized and fixed with an external fixator. The hind limbs were divided into two groups: the destabilized group in which the fixators stiffness was progressively reduced over time and the axially dynamized group in which the fixator was axially dynamized. The healed tibiae were tested for 3-point bending in the anteroposterior plane. The biomechanical tests performed 2 months postoperatively revealed that the side with the destabilized fixator was more rigid than the side with the axially dynamized fixator, but the differences were insignificant (P=.20). This study showed staged destabilization of the fixators stiffness was as effective on the enhancement of fracture healing as axial dynamization.

A digital image processing based bio-identification application from planum nasale of Kangal dogs

In this study, digital image processing based bio-identification application is realized to analyze of nose-print for Kangal dogs. First of all, the image is filtered and the masks for each image is get by using threshold value of the image. And then, when the mask is applied on the image,the algorithms of creating triangle and finding number of circle like shapes by finding angle values of three biggest holes in nose- print with location of holes were applied on the remained data. As a conclusion, statistics results are very different from each other. It is because of the face that the images are unique within themselves. In this study, the nose-prints of ten Kangal dogs are taken in the control of a vet.