کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
95225 160420 2016 8 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
How far does it get?—The effect of shooting distance and type of firearm on the simultaneous analysis of DNA and RNA from backspatter recovered from inside and outside surfaces of firearms
ترجمه فارسی عنوان
چقدر طول می کشد؟ اثر فاصله تیراندازی و نوع اسلحه گرم بر روی تجزیه و تحلیل همزمان DNA و RNA از backspatter بازیابی شده از داخل و خارج از سطوح سلاح گرم
کلمات کلیدی
فاصله تیراندازی؛ Backspatter؛ بالستیک مولکولی؛ تجزیه و تحلیل DNA قانونی؛ تجزیه و تحلیل miRNA قضایی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Analysis of the effect of shooting distances on DNA/RNA analysis from backspatter.
• Analysis of the effect of weapon type on DNA/RNA analysis from backspatter.
• Forensic DNA/RNA analysis is possible with shooting distances up to 15/30 cm.

When a firearm projectile hits a biological target a spray of biological material (e.g. blood and tissue) is ejected from the entrance wound and propelled back into the direction of the firearm. This phenomenon has been termed ‘backspatter’ and if backspattered biological material reaches the firearm on its backward trajectory it may persist on and be recovered from the firearm's inside surfaces. Molecular genetic analysis of backspatter generated by contact shots and shots from very short distances has already been demonstrated to critically contribute to victim identification and the reconstruction of firearm-related crimes.It is not known, however, up to what shooting distance can backspatter be found on firearms’ inside surfaces and what influence the weapon's type and caliber has on backspatter attributes (e.g. reach, amount and distribution).Therefore, the present pilot study investigated the effect of serval combinations of shooting distances and types of firearms and ammunitions on the analyzability of co-extracted DNA and micro-RNA in samples of backspatter collected from interior and exterior surfaces of the firearms after experimental shootings employing standardized ballistic models.We demonstrate the limiting effect of shooting distance and the type of firearm on the yield of nucleic acids recovered from backspatter and the success rates of forensic DNA profiling and RNA based body-fluid and organ tissue identification in experimental shootings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forensic Science International - Volume 258, January 2016, Pages 11–18
نویسندگان
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