MIscellaneous 2 Flashcards
What does the calibre of a gun refer to?
Ammunition - bullet diameter, manufacturer, length of cartridge case
Fire arm - internal bore diameter
What is an indicator of a contact gunshot wound?
No stippling, radial tears in the skin
What is presumptive evidence?
Evidence which shift burden of proof from one party to the opposing party
What blood enhancement if useful in detecting diluted blood?
Luminol
What distance gunshots produce skin tattooing/stippling?
5cm-1m
What is the ‘lead snowstorm’ phenomenon and what produces it?
Sprayed metal fragments in an x-ray produced from high velocity wounds
What are the two main types of document erasure?
Abrasive where writing is removed with an erasure material. Chemical where the writing is removed through dissolving or bleaching the ink
What is obliteration of a document?
Overwriting a sample of writing or printing using another piece of writing material
What are the three steps of a PCR reaction?
Denaturation, annealing and extension
What are the four steps of the ACE-V fingerprint detection method?
Analysis, comparison, evaluation and verification
What is the Bertillonage identification system>
Anthropometric measuring system using measurements, morphological descriptions and distinctive marks
What is the physical developer fingerprint detection method?
A silver based reagant to detect latent fingerprints on greasy and sticky surfaces
What are examples of primary and secondary identifiers?
Primary identifiers involve fingerprints, DNA and dental records.
Secondary identifiers include evidence found on the body and visual descriptions
What is the LA-ICP-MS analysis of glass?
Elemental analysis to determine the percentage of inorganic elements in the glass sample after vaporisation
