Hair in forensic science

• [PDF File]Forensic toxicological analysis of hair: a review

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  Keywords: Forensic science, Toxicology, Hair analysis, Narcotic drugs, Drug of abuse Background During the last few decades, tremendous research work has been done to investigate the different drugs of abuse and their metabolites in different types of biological samples, e.g. saliva, sweat and hair. In a number of coun-

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• [PDF File]Forensic Hair Comparisons - National Academies of Sciences, Engineering ...

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  Basis of forensic hair microscopy •Comparative biology, including medicine and physical anthropology, has a long history of microscopic identification and comparison dating back to the 18th century. – Comparison is the cornerstone of the majority of biology, both past and present. •Microscopic techniques, combined with studied

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• [PDF File]HAIR TRAINING GUIDELINES - NIST

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  Standard Practice for Training in the Forensic Examination of Hair by Microscopy 3.31 microscopic- a term that describes characteristics too small to be resolved by the unaided eye, but large enough to be resolved with a microscope. 3.32 microscopical – a term that describes the process of using a microscope to analyze material.

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• [PDF File]FORENSIC SCIENCE Trace Evidence - Deer Valley Unified School District

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  FORENSIC SCIENCE Trace Evidence . 2 Introduction Trace Evidence--any small pieces of material, man-made or naturally occurring. Trace evidence (in the absence of DNA) is considered class evidence. As early as the 1879, Dr. Rudolph Virchow ... Wash the hair to remove lipids, oils, cosmetics and ...

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• [PDF File]The Study of Hair - Cengage

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  A classic 1883 text on forensic science, The Principles and Practice of Medical Jurisprudence by Alfred Swaine Taylor and Thomas Stevenson, con-tains a chapter on using hair in forensic investigations. It includes drawings of human hairs under magnification. The various parts of human hair are identified.

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• [PDF File]Forensic Fiber and Hair Evidence Analysis

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  2. Body area where the hair originated (i.e. head, pubic, body). 3. Possibly how the hair was removed from the body (e.g. naturally, forcibly removed). 4. Whether hair has been altered by having been cut, bleached or dyed. 5. Whether a questioned hair could share common origin with a particular hair standard. When

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• [PDF File]The Forensic Analysis of Hair - Welcome to mr. reeves forensic science

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  use of hair in forensic investigations to determine identity. • 1916 - Albert Schneider became the first to collect physical evidence with a vacuum. • 1920 - Locard becomes known for the exchange principle –the fact that “every contact leaves a trace.” • 1931 - Dr. Paul Kirk works on new ways to improve the use of hair in forensic

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• [PDF File]FORENSIC SCIENCE - Northwestern University Pritzker School of Law

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  156 STRENGTHENING FORENSIC SCIENCE IN THE UNITED STATES transferred from an individual to the cnme scene, and from the crime scene to an individual. Forensic hair examiners generally recognize that various physical characteristics of hairs can be identified and are sufficiently differ-

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• [PDF File]History of Hair Analysis - Mrs. Sikes

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  3 Forensic Science: Fundamentals & Investigations, Chapter 3 History of Hair Analysis 1. 1883: Alfred Swaine Taylor and Thomas Stevenson covered hair in a forensic science text 2. 1910: Victor Balthazard and Marcelle Lambert published a comprehensive study of hair 3. 1934: Dr. Sydney Smith, analyzed hairs side by side 4. Today: chemical tests, neutron activation

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• [PDF File]Role of hair as Evidence in Investigation: A Forensic Approach - IJSER

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  in forensic hair characterization for its morphology and dis-tinct identification parameters as being unique to every indi-vidual for the forensic examination of hair. COMPOSITION . Hair is a fibre, thin structure approximately around 0.1mm in diameter with an oval or a circular cross-section.[8] It is main-

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• [PDF File]Intro to Forensic Science DNA, Semen, and Saliva - University of South ...

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  Beginning in 1996, the FBI Laboratory launched a nationwide forensic science effort to establish core STR loci for inclusion within the national database known as CODIS (Combined DNA Index System). The 13 CODIS loci are CSF1PO, FGA, TH01, TPOX, VWA, D3S1358, D5S818, D7S820, D8S1179, D13S317, D16S539, D18S51 and D21S11. These loci are nationally and

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• [PDF File]Recommendations for Hair Testing in Forensic Cases Society of ... - SoHT

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  These areas were addressed in a previous Consensus from the Society of Hair Testing Forensic Science International 84 (1997) 3-6 • The sample should be cut from the posterior vertex region of the head, as close as possible to the scalp, since this is the region of least variation in growth rate. If not, the source of the sampling

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• [PDF File]The Study of Hair - Forensic science

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  A classic 1883 text on forensic science, The Principles and Practice of Medical Jurisprudence by Alfred Swaine Taylor and Thomas Stevenson, con-tains a chapter on using hair in forensic investigations. It includes drawings of human hairs under magnification. The various parts of human hair are identified.

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• [PDF File]Procedural bias in forensic science examinations of human hair - Springer

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  Procedural Bias in Forensic Science Examinations of Human Hair Larry S. Miller Several forms of expert forensic science evaluations exist that rely at least in part on the subjective opinion of the examiner. Human hair identification is one such examination. This paper considers

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• [PDF File]Forensic Human Hair Examination Guidelines - asteetrace

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  Forensic Human Hair Examination Guidelines Scientific Working Group on Materials Analysis (SWGMAT April 2005 1. Introduction Hair examinations and comparisons, as generally conducted by forensic scientists, often provide important investigative and associative information. Human and animal hairs have been used in

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• [PDF File]Journal of Forensic Sciences, 47, 964-967. - NIST

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  Forensic Science Handbook Volume 1 2nd Edition: ... This text has chapters on many fields of forensic science. The chapter on human hair identification and association includes topics on hair structure, growth, identification and comparison, collection, conclusions and report writing and presentation of the evidence in court.

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• [PDF File]HAIR TRAINING GUIDELINES - NIST

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  Standard Practice for Training in the Forensic Examination of Hair by Microscopy 1. Scope 1.1 This document is intended for use by laboratory personnel responsible for training forensic hair examiners to prepare them to perform forensic hair examinations, including microscopical human hair comparisons.

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• Ultracrepidarianism in Forensic Science: The Hair Evidence Debacle

  This Essay uses the hair scandal to differentiate two related problems with many types of forensic-science testimony. The first is the problem of foundation—what reasons are there to believe that hair or other analysts possess sufficient expertise to produce relevant evidence of associations between known and unknown samples?

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• Flawed forensics: Statistical failings of microscopic hair analysis

  report, Strengthening Forensic Science in the United States: A Path Forward.1 The report discussed the use of forensic science by law enforcement, devoting seven pages to hair comparison. It concluded, based on the problems identified above, that microscopic hair comparisons simply “cannot uniquely identify one person”.

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