A tool to support the creation of datasets of tampered videos

Digital Video Forensics is getting a growing interest from the Multimedia research community, as the need for methods to validate the authenticity of a video content is increasing with the number of videos freely available to the digital users. Unlike Digital Image Forensics, to our knowledge, there are not standard datasets to test video forgery detection techniques. In this paper we present a new tool to support the users in creating datasets of tampered videos. We furthermore present our own dataset and we discuss some remarks about how to create forgeries difficult to be detected by an observer, to the naked eye

The effect of vitamin E and L-carnitine against methotrexate-induced injury in rat testis

PubMedID: 26281314Background/aim: Methotrexate (MTX), used commonly as an antimetabolite drug in cancer therapy, leads to acute toxic side effects in tissues or organs containing rapidly dividing cells, such as bone marrow, gastrointestinal mucosa, and seminiferous tubules. In this study, we investigated the protective effects of vitamin E and L-carnitine against MTX-induced injury in rat testis. Materials and methods: Rats were divided into 4 groups, including the control group. The study took 17 days and the animals received daily doses of 0.5 mL/kg saline, 250 mg/kg vitamin E, or 500 mg/kg L-carnitine intraperitoneally. The experimental groups received 20 mg/kg methotrexate intraperitoneally on days 3 and 10. Results: Weight loss, testicular weight loss and marked histological injuries, increased malondialdehyde levels, and decreased superoxide dismutase levels were only observed in the MTX-treated groups. Vitamin E and L-carnitine treatments did not affect MTX-induced weight loss or testicular weight loss, but they inhibited MTX-induced testicular histological injuries. Vitamin E and L-carnitine treatments suppressed the increases in malondialdehyde levels and the decreases in superoxide dismutase levels. Conclusion: Vitamin E and L-carnitine treatments decreased MTX-induced testicular histological injuries, and these results were supported by biochemical measurements. © TÜBİTAK

Effects of agmatine sulphate on facial nerve injuries

PubMedID: 28122652Objective: To evaluate the effect of agmatine sulphate on facial nerve regeneration after facial nerve injury using electron and light microscopy. Methods: The study was performed on 30 male Wistar albino rats split into: a control group, a sham-treated group, a study control group, an anastomosis group, and an anastomosis plus agmatine sulphate treatment group. The mandibular branch of the facial nerve was dissected, and a piece was removed for histological and electron microscopic examination. Results: Regeneration was better in the anastomosis group than in the study control group. However, the best regeneration findings were seen in the agmatine sulphate treatment group. There was a significant difference between the agmatine group and the others in terms of median axon numbers (p < 0.004) and diameters (p < 0.004). Conclusion: Agmatine sulphate treatment with anastomosis in traumatic facial paralysis may enhance nerve regeneration. Copyright © JLO (1984) Limited 2017

Comparative study of the osseous healing process following three different techniques of bone augmentation in the mandible: An experimental study

PubMedID: 25091894The aim of this study was to evaluate the osseointegration of three different bone grafting techniques. Forty-eight mature New Zealand rabbits were divided randomly into three groups of 16 each. Horizontal augmentation was performed on the corpus of the mandible using three different techniques: free bone graft (FBG), free periosteal bone graft (PBG), pedicled bone flap (BF). The animals were sacrificed at postoperative weeks 1, 3, or 8. Specimens were decalcified for histological examination, and histomorphometric measurements were performed. The histological evaluation demonstrated bony fusion between the grafts and the augmented mandibular bone after 8 weeks in all groups. At week 8, the bone volume was significantly greater in the BF group than in the FBG (P < 0.001) and PBG (P = 0.001) groups, and also the trabecular thickness was significantly greater than in the FBG (P = 0.015) and PBG (P = 0.015) groups. Trabecular separation was significantly lower in the BF group than in the FBG group at week 8 (P = 0.015). BF demonstrated greater osseous healing capacity compared to FBG and PBG. The preserved vascularization in BF improves the bone quality in mandibular bone augmentations. © 2014 International Association of Oral and Maxillofacial Surgeons