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İstanbul, Turkey

Ersoy G.,Istanbul University | Gurler A.S.,Istanbul University | Ozbay M.,Council of Forensic Medicine
Journal of Forensic Sciences | Year: 2012

Forensic medicine specialists take account of the projectiles remaining in the body when determining whether there are an equal number of entry and exit wounds. The absence of projectiles should suggest blank cartridges, a single exit wound despite several firings and bullet embolization, whereas the presence of more projectiles than expected may indicate tandem projectiles and multiple projectiles entering through the same hole. Radiological examination of the whole body, follow-up of the bullet trajectories, examination of the clothes, and examination of the gun and projectiles play a key role in solving difficult cases. We review such situations based on a case of tandem bullets. Two 7.65-mm bullets created lethal wounds entering through a 32-year-old victim's neck followed the same trajectory to a certain point and diverted. We discussed the possibilities in cases that show inequalities between entry and exit wounds, in light of relevant literature. © 2012 American Academy of Forensic Sciences. Source


Karadayi B.,Istanbul University | Kaya A.,Istanbul University | Kolusayin M.O.,Istanbul University | Karadayi S.,Refik Saydam National Health Agency | And 2 more authors.
International Journal of Legal Medicine | Year: 2012

Radiographic evaluation of mineralization and eruption stages of third molars using dental panoramic radiographies can be an efficient tool for chronological age estimation in both forensic sciences and legal medicine. The third molar tooth is utilized for dental age estimation about the age span of 15-23 years because it represents the only tooth still in development. The aim of this study is to obtain and analyze data regarding third molar development and eruption in Turkish population for dental age estimation. A total of 744 dental panoramic radiographies of 394 female and 350 male subjects aged between 8 and 22 years were examined. Third molar development was determined according to the Nolla classification system, and eruption was assessed relative to the alveolar bone level. Mandibular and maxillary third molars were generally found at similar stages of development on both sides. Nolla stage 6 (completed crown calcification) was reached at around the age of 15 in both maxillary and mandibular third molars in both sexes. Alveolar emergence was at around the age of 16 in males and around age of 17 in females. Although third molars' eruption shows greater variability than development of third molars, data which were obtained from this study about eruption of these teeth can be supportive to development data for age estimation. © Springer-Verlag Berlin Heidelberg 2012. Source


Kaya E.C.,Gumushane University | Karadeniz H.,Council of Forensic Medicine | Kantekin H.,Karadeniz Technical University
Dyes and Pigments | Year: 2010

A tetranitrile monomer was synthesized by nucleophilic aromatic substitution of N,N′-(2,2′-(propane-1,3-diylbis(sulfanediyl))bis(ethane-2,1-diyl))bis(4-methylbenzenesulfonamide) onto 4-nitrophthalonitrile. A metal-free phthalocyanine polymer was prepared by the reaction of the tetranitrile monomer under N2 in the presence of 2-(dimethylamino)ethanol at 145 °C for 24 h. Zinc(II), copper(II), cobalt(II), nickel(II), lead(II), phthalocyanine polymers were prepared by reaction of the tetranitrile with the chlorides of zinc (II), copper (II), cobalt (II), nickel (II), lead (II), employing microwave irradiation in the presence 2-(dimethylamino)ethanol at 175 °C, 350 W for 10 min. The thermal stabilities of the phthalocyanine compounds were determined by thermogravimetric analysis. The new compounds were characterized by a combination of IR, 1H NMR, 13C NMR, UV-vis, elemental analysis and MS spectral data. © 2009 Elsevier Ltd. All rights reserved. Source


Kabay N.,Pamukkale University | Karadeniz H.,Council of Forensic Medicine | Demirayak N.,Pamukkale University | Gok Y.,Pamukkale University
Inorganic Chemistry Communications | Year: 2011

The synthesis of new magnesium porphyrazines, peripherally substituted with 14-membered dioxa-dithia (O2S2) and tetrathia (S 4) macrocycles has been accomplished by cyclotetramerization of (6Z)-1,3,4,9,10,12-hexahydro-2,5,8,11-benzodioxadithia-cyclotetradecine-6, 7-dicarbonitrile (3) or (6Z)-1,3,4,9,10,12-hexahydro-2,5,8,11- benzotetrathiacyclotetradecine-6,7-dicarbonitrile (5) in the presence of magnesium butanolate. The precursors were prepared from disodium salt of dithiomaleonitrile and o-xylenebis(1-chloro-3-oxapentane) (2) or o-xylenebis(1-chloro-3-thiapentane) (4). The metal-free porphyrazines are obtained by the treatment of these magnesium porphyrazines with trifluoroacetic acid. These new compounds are characterized by a combination of elemental analysis and 1H, 13C NMR, IR, UV-vis and MS spectral data. Copyright © 2011 Published by Elsevier B.V. All rights reserved. Source


Acar H.I.,Ankara University | Comert A.,Ankara University | Avsar A.,Council of Forensic Medicine | Celik S.,Ankara University | Kuzu M.A.,Ankara University
Diseases of the Colon and Rectum | Year: 2014

BACKGROUND: Lower local recurrence rates and better overall survival are associated with complete mesocolic excision with central vascular ligation for treatment of colon cancer. To accomplish this, surgeons need to pay special attention to the surgical anatomical planes and vascular anatomy of the colon. However, surgical education in this area has been neglected. OBJECTIVE: The aim of this study is to define the correct surgical anatomical planes for complete mesocolic excision with central vascular ligation and to demonstrate the correct dissection technique for protecting anatomical structures. DESIGN AND SETTINGS: Macroscopic and microscopic surgical dissections were performed on 12 cadavers in the anatomy laboratory and on autopsy specimens. The dissections were recorded as video clips. METHODS: Dissections were performed in accordance with the complete mesocolic excision technique on 10 male and 2 female cadavers. Vascular structures, autonomic nerves, and related fascias were shown. Within each step of the surgical procedure, important anatomical structures were displayed on still images captured from videos by animations. RESULTS: Three crucial steps for complete mesocolic excision with central vascular ligation are demonstrated on the cadavers: 1) full mobilization of the superior mesenteric root following the embryological planes between the visceral and the parietal fascias; 2) mobilization of the mesocolon from the duodenum and the pancreas and identification of vascular structures, especially the veins around the pancreas; and 3) central vascular ligation of the colonic vessels at their origin, taking into account the vascular variations within the mesocolonic vessels and the autonomic nerves around the superior mesenteric artery. LIMITATIONS: The limitation of this study was the number of the cadavers used. CONCLUSIONS: Successful complete mesocolic excision with central vascular ligation depends on an accurate knowledge of the surgical anatomical planes and the vascular anatomy of the colon. © The ASCRS 2014. Source

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