Forensic Magazine: Weekly Newsletter

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February 21, 2007 | Volume 1, Issue 8

THIS WEEK'S FEATURE

Forensic art: The Casket Man - a case study (second of two parts)
After another transport back to Detroit, the skull was prepped for a three-dimensional facial reconstruction. This included determining how to set his mandible. While dissecting the head, I found that the funeral home had not laid him out with a denture in place. He did however have his mouth stuffed with filler cotton. Also, the superior ridge of the mandible was smooth, as if a denture was worn for some time. I decided to set the mandible as if he once wore a denture. Positioning of the edentulous mandible can be done by placing a dowel (or a No. 2 pencil works just fine) through the mandibular notches, behind the pterygoid bones.
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NEWS

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IN THE MAGAZINE

Identifying Degraded DNA

MiniSTR technology expected to solve more crimes through identification of highly-degraded DNA samples

In the past 20 years, DNA typing has enhanced the ability of the forensic scientist to characterize biological evidence and has greatly influenced the way the law enforcement community conducts criminal investigations. In particular, short tandem repeat (STR) analysis has made it possible to determine the source of DNA samples collected at a crime scene from a wide variety of materials. However, as powerful as current STR testing can be, it does have limits dictated by the quality and quantity of the biological evidence. For instance, in cases where a DNA sample is either highly-degraded, compromised by sample impurities, or present in trace amounts, STR analysis cannot be used to identify the contributor or to exclude those who may be falsely associated with the evidence.

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PRODUCT FOCUS

Rofin USA: Light Source
The Flare is a high-performing, low-cost portable forensic light source. This light source assists in finding evidence including fingerprints, fibers and body fluids. The Flare comes in a variety of optically enhanced colors. The interchangeable lithium ion batteries last up to four hours of continual use, have no memory effect, and rapidly charge. (Rofin USA)

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