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Forensic Identification, Properties, Sub Category, Dental stone, Is Based…
Forensic Identification
Evidence
Physical Evidence
Trace Evidence
Tiny fragments of Physical evidence
Microscopic/invisible to naked eye
Body Fluids
Drugs
Firearms/ammo
Explosives
Glass
Paint
Tool marks
Hair and fibre
Identify
Compare
Conclude
Physical Properties
Colour
Textue
State
Density
odour
Boiling/Melting Points
Chemical Properties
Flammability
Oxidation
Radioactivity
Enthalpy
.
.
,
Recreation may include physical evidence
Tangible evidence
Tangible evidence
Tangible evidence
Tangible evidence
Locard's Principle
Individuals
First officer on scene
Scene of crime officer
Forensic Identification officer
Forensic scientists
Forensic identification Services
Friction Ridge Analysis
No Sebaceous Glands
Sweat Glands only
No hair
Lack Of Pigmentation
Over Abundance of Nerve Endings
Volar Skin
Dermis
Epidermis
Stratum Corneum
Stratum Lucidum
Stratum Granulosum
Stratum Spinosum
Stratum Basal
Level One
Orientation
Pattern type
Focal Points
Level Two
Ridge endings
Bifurcation
Ridge Dot
Continuous Ridges
Minutiae
Level Three
Pores
,
End Shapes and Angles
Pore Shape/Size
Edge Shapes
Width
The Who
Lab Analysis
Fingerprint Exam
Fingerprint Matrix
Eccrine sweat
water
Proteins and amino acids
dirt
Blood
Substrate
Porous
.
Paper
Leather
Tape
Non-porous
.
Plastic
Metal
Methods
Cyanoacrylic glue Fuming
Heat
Humidity
Uses
Lights and lasers
Rhodamine 6G (532nm laser)
Basic yellow (450nm light, Blue)
1,2-Indanedione
Reacts with Amino Acids
532nm laser
Friction Ridge Analysis
Footwear Impressions
2D/Latent impressions
Oblique lighting in dark room
Establish path of contamination
Mark both ends of Impression
Photograph Impression
Methods of Recovery
Fingerprint Powder and Lifting Tape
Dried Wet Origin impression
Electric Lifter and Mylar film
Dry dust deposit impression
Gel Lifters
Dust and blood impressions
Fingerprint Powder and Lifting Tape
Gel Lifters
3D Impressions
Adds depth along with length and width
Methods of Recovery
Casting
Photography
Scale needs to be level with bottom of impression
Photograph cast
More Information on Impression
Replicates Footwear
Can be used in Court
Sulphur
Stove to Melt
Snow Impressions
Protect from weather and people walking
Photograph cast
Clean out/ Blow out debris
Use release agent to prevent adhesion of cast and substrate
Strengthen around the impression if required
Photography
Primer paint will provide a good contrast as well as act as a parting agent
Snow
Slush
Mud
Dirt
Sand
Route to Scene
Points of entry and attempted entry
Disturbed areas
Points of exit
Bloodstain Pattern Analysis
the How
Unknow variables
shape
Size
Distribution
Location
Of Bloodstain
Homocides
Non-homicide death investigations
Serious assaults
Sexual assaults
Serious industrial accidents
Passive
Drip stain
drip pattern
splash pattern
Pool pattern
Flow pattern
Gravity acting alone
Saturation pattern
Transfer
Between a blood bearing surface and another surface
Swipe
A bloody hand going against a clean wall with movement
Wipe
A clean hand going against a blood wall with movement
Splatter
a blood drop dispersed through the air from an external force
Opposites
Projected (breached blood vessel)
Cast-off
Expiration
Impact
Splatter from gunshot
Blood Impression evidence
Leuco crystal violet to enhance blood impressions
3D Forensics
3D Forensics
Reconstruction
More weight
Physical evidence
Recreation
Less weight
Witness evidence
Properties
,
.
Sub Category
Impression Evidence
Prints
Tire marks
Including
Dental stone
Is Based on
such as
Most commonly
Steps to identify
Reference standard
Properties
Such as
Such as
Uses
requires multiple professions
Such as
Uses
Including
Including
Including
To Determine the
Characteristics
Anatomy
Structure
Layers
Levels of Friction Ridge Detail
Overall Ridge Flow
Characteristics
Individuality, refered to as
Dimensional attributes
Identification and Exclusion decisions can be supported
Including
Including
How To Recover fingerprints
includes
Starts with
Includes
Includes Foreign Materials
Surface touched
Two Types
uses these
Identification of Fingerprints uses
Enhanced by
Such as
Identification of Fingerprints uses
Such as
Such as
Used because
Visualized using
Locating visible Impressions
Locating
Identified using these
Last resort
used on
commonly used
used on
Used on
Commonly used
Produce fine detail
Two components
Dimensions
Identified using these
Supplement each other
Found in
Proper steps
Reasons
Materials
Requires
Only used for
Proper steps
Casting
To have a record of cast
Red: Regular Connection
Orange: Label/connecting word/phrase
Purple: Cross/multiple Connection
Legend
Used to determine
Has limits due to
Study of
variables
Used for
Classifications of Bloodstains
Sub Categories
Formed by
Examples
Examples
Two types
Example
Example
Opposites
Formed by
Formed by
Sub Categories
Yellow: Longer Connections to avoid confusion
Includes Fingerprint Impressions in blood
Includes footprint Impressions in blood
uses
Types
in court
In court
Based on
Based on
Tangible evidence
Tangible evidence
Name: Conrad Wawrzoszek
Student Number: 1007277493
Date: October 22, 2020