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Articles 1 - 4 of 4
Full-Text Articles in Forensic Science and Technology
Haplotype Analysis For Irish Ancestry, Heather Miller Coyle, Robert Whiting
Haplotype Analysis For Irish Ancestry, Heather Miller Coyle, Robert Whiting
Forensic Science Publications
Forensic haplotype analysis of the male Y chromosome is currently used to establish the number of male donors in sexual assaults, the number of male bleeders in blood pattern analysis, and for ancestry correlation to genetic founder populations in biogeographic studies. In forensic laboratory applications, its primary use is for DNA profile generation with trace amounts of male DNA in the presence of excess female DNA (e.g. spermatozoa identification, male component of fingernail scrapings). Our study supports the potential use of the Y chromosome in a “dragnet” approach (most haplotypes are unique) similar to that described by Kayser in 2017 …
The Potential Interference Of Body Products And Substrates To The Identification Of Ignitable Liquid Residues On Worn Clothing, Gina Guerrera, Erika Chen, Robert Powers, Brooke Weinger Kammrath
The Potential Interference Of Body Products And Substrates To The Identification Of Ignitable Liquid Residues On Worn Clothing, Gina Guerrera, Erika Chen, Robert Powers, Brooke Weinger Kammrath
Forensic Science Publications
The question of whether deposits on clothing as well as their chemical composition are being mistaken for ignitable fluids is a concern for forensic analysts. Body products and oil secretions can have similar chemical profiles to ignitable liquid residues (ILRs) as a result of comparable chemical compounds that may be found in both sources. This study investigated whether substrates of unworn and worn clothing, with endogenous body secretions and body products could interfere with ILR analysis. Sample extraction was completed by passive headspace concentration with activated charcoal strips (ACS) and desorption with carbon disulfide followed by analysis with gas chromatography-mass …
Optical Tweezers As An Effective Tool For Spermatozoa Isolation From Mixed Forensic Samples, Nicole Auka, Michael Valle, Bobby D. Cox, Peter D. Wilkerson, Tracey Dawson Cruz, Joseph E. Reiner, Sarah J. Seashols-Williams
Optical Tweezers As An Effective Tool For Spermatozoa Isolation From Mixed Forensic Samples, Nicole Auka, Michael Valle, Bobby D. Cox, Peter D. Wilkerson, Tracey Dawson Cruz, Joseph E. Reiner, Sarah J. Seashols-Williams
Forensic Science Publications
A single focus optical tweezer is formed when a laser beam is launched through a high numerical aperture immersion objective. This objective focuses the beam down to a diffraction-limited spot, which creates an optical trap where cells suspended in aqueous solutions can be held fixed. Spermatozoa, an often probative cell type in forensic investigations, can be captured inside this optical trap and dragged one by one across millimeter-length distances in order to create a cluster of cells which can be subsequently drawn up into a capillary for collection. Sperm cells are then ejected onto a sterile cover slip, counted, and …
The Effect Of Electronic Cigarette User Modifications And E-Liquid Adulteration On The Particle Size Profile Of An Aerosolized Product, Haley A. Mulder, Jesse L. Patterson, Matthew S. Halquist, Leon Kosmider, Joseph B. Mcgee Turner, Justin L. Poklis, Alphonse Poklis, Michelle R. Peace
The Effect Of Electronic Cigarette User Modifications And E-Liquid Adulteration On The Particle Size Profile Of An Aerosolized Product, Haley A. Mulder, Jesse L. Patterson, Matthew S. Halquist, Leon Kosmider, Joseph B. Mcgee Turner, Justin L. Poklis, Alphonse Poklis, Michelle R. Peace
Forensic Science Publications
Electronic cigarettes (e-cigarettes) are an alternate nicotine delivery system that generate a condensation aerosol to be inhaled by the user. The size of the droplets formed in the aerosol can vary and contributes to drug deposition and ultimate bioavailability in the lung. The growing popularity of e-cigarette products has caused an increase in internet sources promoting the use of drugs other than nicotine (DOTNs) in e-cigarettes. The purpose of this study was to determine the effect of various e-cigarette and e-liquid modifications, such as coil resistance, battery voltage, and glycol and drug formulation, on the aerosol particle size. E-liquids containing …