Download Atlas of human hair microscopic characteristics by Robert R. Ogle Jr., Michelle J. Fox PDF

By Robert R. Ogle Jr., Michelle J. Fox

The Atlas of Human Hair Microscopic features fills a void within the assets on hand to researchers and practitioners in forensic hair exam via supplying photographic archetypes for the microscopic features of human hair and the types of the features obvious in forensic examinations, together with curl; colour; pigment distribution and density; cortical fusi; and ovoid our bodies. It additionally explains a numerical scoring procedure that enables numerical description of hair kind, that can then be in comparison to others in a database.

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1999 CRC Press LLC class limit between Medium to Dark Brown and Dark Brown to Opaque hairs. 12 is an example of an Opaque hair. 5 Gray Brown Hair The variates for Gray Brown hair are Light Gray Brown, Light to Medium Gray Brown, Medium to Dark Gray Brown (Black), and Dark Gray Brown (Black) to Opaque. These variates are divided using three photographic archetypes. 13 is the archetype for the variate class limit between Light Gray Brown and Light to Medium Gray Brown hairs. 14 is the archetype for the variate class limit between Light to Medium and Medium to Dark Gray Brown (Black) hairs.

6. Dawber, R. , Hair and Scalp Disorders, Martin Dunitz, London, 1995, 19, (J. B.

The approach suggested here is to judge the continuity of the medulla based on both the opaque and translucent forms. 8 Medulla Opacity Medulla opacity refers to the appearance of the medulla as viewed with transmitted light in the compound light microscope. The variates for medulla opacity include Absent, Opaque, Translucent, and Opaque/Translucent. Photographic archetypes illustrating each form of medulla opacity are presented in Chapter 5. The term Absent refers to hairs with no visible medulla, including those hairs in which the medulla is obscured due to heavy pigmentation.

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