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Forensic dactyloscopy is the study of fingerprints. Forensic document examination or questioned document examination answers questions about a disputed document using a variety of scientific processes and methods. Many examinations involve a comparison of the questioned document, or components of the document, with a set of known standards.
Forensic firearm examination is the forensic process of examining the characteristics of firearms or bullets left behind at a crime scene.Specialists in this field try to link bullets to weapons and weapons to individuals.
collect a urine sample Nasogastric tube: for nasogastric aspiration of stomach contents; usually it is not used Water bath: for flotation tests to detect presence of gas, specially for infants (lungs, intestine) as a sign of postpartum life Specimen jars/envelopes/packets: preservation of material evidence Swabs: collecting smears Metacarpal saw
One of those is the Scope of Expertise in Forensic Document Examination document [4] which states an examiner needs "discipline specific knowledge, skills, and abilities" that qualifies them to conduct examinations of documents to answer questions about: the source(s) of writing; the source(s) of machine-produced documents;
Forensic footwear evidence can be used in legal proceedings to help prove that a shoe was at a crime scene. Footwear evidence is often the most abundant form of evidence at a crime scene and in some cases can prove to be as specific as a fingerprint .
Forensic identification is the application of forensic science, or "forensics", and technology to identify specific objects from the trace evidence they leave, often at a crime scene or the scene of an accident. Forensic means "for the courts".
Ninhydrin is most commonly used to detect fingerprints in forensic cases, as the terminal amines of lysine residues in peptides and proteins sloughed off in fingerprints react with ninhydrin. [2] [3] Ninhydrin is a white solid that is soluble in ethanol and acetone. [1] Ninhydrin can be considered as the hydrate of indane-1,2,3-trione.
Forensic scientists realised that there was more to the skin than just fingerprints, and that the use of palm and ear prints could also assist in the identification process. [10] Alec Jeffreys was the first forensic scientist to use DNA analysis for the purpose of body identification in 1984. [ 11 ]