BPA 1
- Created by: meganjayne15
- Created on: 30-04-14 12:01
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- BPA
- The evaluation of the static aftermath of bloodshed in an attempt to determine the actions that created the bloodstains found at the crime scene
- physical evidence - who?
- pattern evidence - what?
- information from a crime scene
- is it blood?
- presumptive and confirmatory tests
- LCV (leuco crystal violet)
- retains print but can destroy DNA
- luminol
- does not retain print - disperses
- LCV (leuco crystal violet)
- presumptive and confirmatory tests
- whose blood is it?
- DNA analysis
- where is the blood?
- detailed reports
- how much blood?
- type and severity of injury
- relevance to crime?
- is it blood?
- information from analysis of BPA
- nature of offence
- weapon used?
- location of sites of attack
- number of blows
- blood leaks out after a minimum of 3 blows
- position of victim and assailant
- sequence of events
- presence of alien blood
- blood that doesnt belong to victim
- likelihood of blood on assailant
- support for/refutation of alleged events
- nature of offence
- 1939 - Balthazard: length to width ratio, point of origin and surface type
- Stain classification (Individual characteristics)
- single drops
- impact spatter
- cast-off
- arterial damage
- large volume stains
- Physologically altered bloodstains (PABS)
- contact stains
- composite stain patterns
- reconstruction
- garment analysis
- put a mannequin to get a better understanding of the location of the stains on the garment
- try to re-create the pattern which has been created at the crime scene
- some techniques not accurate i.e. spatter head
- re create an assualt
- determine the different blood patterns after kicking and stomping
- garment analysis
- The evaluation of the static aftermath of bloodshed in an attempt to determine the actions that created the bloodstains found at the crime scene
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