Abstract:
:In developing latent prints on cartridge casings and shotgun shells, multiple chemical processes should be used in order to obtain the best results. In Phase I, this study established an optimal chemical sequence for both Brass and Nickel cartridge casings based on six sequences involving four chemicals: Cyanoacrylate, Black Powder, Rhodamine 6G and Acidified Hydrogen Peroxide. Phase II was a validation study of Phase I involving a random sample of both Brass and Nickel cartridge casings, which were processed according to the determined optimal sequences. In addition, ribbed shotgun shells were processed under Phase I results and determined to be dependent upon the utilization of a CrimeScope at 515 nm. Consideration should be given to the type of cartridge case being examined. Although limitations exist, some chemical sequences undeniably work better than others. All photographs were manipulated with Adobe Photoshop. All results were verified by a senior latent print examiner.
journal_name
J Forensic Scijournal_title
Journal of forensic sciencesauthors
Edmiston KE,Johnson Jdoi
10.1111/j.1556-4029.2009.01152.xsubject
Has Abstractpub_date
2009-11-01 00:00:00pages
1327-31issue
6eissn
0022-1198issn
1556-4029pii
JFO1152journal_volume
54pub_type
杂志文章abstract::Recent court challenges have highlighted the need for statistical research on fingerprint identification. This paper proposes a model for computing likelihood ratios (LRs) to assess the evidential value of comparisons with any number of minutiae. The model considers minutiae type, direction and relative spatial relati...
journal_title:Journal of forensic sciences
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abstract::Undocumented Border Crosser (UBC) deaths in Arizona are a major issue faced by medicolegal authorities. Currently, the Maricopa County Office of the Medical Examiner (MCOME) is in possession of over two hundred unidentified individuals, more than half of whom are presumed to be UBCs. The primary goal of this study was...
journal_title:Journal of forensic sciences
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doi:10.1111/1556-4029.13368
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journal_title:Journal of forensic sciences
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doi:10.1111/j.1556-4029.2007.00525.x
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journal_title:Journal of forensic sciences
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doi:
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journal_title:Journal of forensic sciences
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doi:
更新日期:2003-11-01 00:00:00
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journal_title:Journal of forensic sciences
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journal_title:Journal of forensic sciences
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journal_title:Journal of forensic sciences
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journal_title:Journal of forensic sciences
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doi:
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journal_title:Journal of forensic sciences
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