PPT-Blood Spatter Pattern Analysis

Ms Schultz The Sam Sheppard Case On July 4 1954 Sam Sheppard called police to report that his wife Marilynn was dead in the bedroom He said the night before his wife had gone upstairs to bed while he was asleep on the couch When he went upstairs he saw his wife covered in blood He heard a noise and ran downstairs chasing after a 63 bushy haired man The two struggled and Dr Sheppard was choked unconscious When police arrived Marilynn was found with 35 wounds to the head and blood drenched the walls door and bed Her face was almost unrecognizable Sheppard served 10 years in prison before the US Supreme court rules that the trial had been tainted The evidence was reexamined Blood spatters and blood drops provided some of the most compelling evidence Dr Paul Kirk an expert in blood analysis determined the killer could not have been Sam because the attack was perpetrated by a left handed person Dr Sheppard was right handed. General Info gained from bloodstain pattern analysis:. 1. the direction the blood originated from. 2.the angle that the blood drop struck a surface. 3. location/position of a bleeding individual at a crime scene. Bloodstain Science . What . does the abbreviation BPA represent? . Bloodstain Pattern Analysis. What can an investigator learn from the analysis of a blood spatter?.  Type and velocity of weapon. PATTERN DEVELOPMENT. Key Concepts and Terms. Apparel Design Technical Pack (Tech Pack). Block Pattern. CAD-Computer Aided Design. Costing. Design Details. Design Samples . Drafting a Pattern . Flat Pattern. Griffin. Bloodstain patterns. The patterns left by falling, projected, or smeared blood can help the forensic investigator interpret and reconstruct what has happened at a crime scene.. Observation of the position and shape of stain patterns can give information such as:. Spatter Definition. What is impact spatter?. A blood stain produced when an object makes forceful contact with a source of blood, projecting blood outward from the source.. Why do we care?. Why is impact spatter important?. 1. What type of bloodstain?. 2. What type of blood stain?. 3. What type of blood stain?. 4. . . What type of blood stain?. 5. What type of blood stain?. 6. What type of blood stain?. 7. type of blood stain?. October . 14, 2014. Points of origin and convergence. The source of blood spatter can be localized by following the direction of travel of several stains.. Direction of trave. l . The narrow end of an elongated . What can an investigator learn from the analysis of a blood spatter?. Type and velocity of weapon. Number of blows. Handedness of assailant (right or left-handed). Position and movements of the victim and assailant during and after the attack. SFS1. Students will recognize and classify various types of evidence in relation to the definition and scope of Forensic Science.. SFS2. Students will use various scientific techniques to analyze physical and trace evidence.. Blood Stain Evidence. Bloodstain patterns can help investigators reconstruct events in a crime scene.. Analysis of the blood stain can tell whether it is animal or human.. Projected blood stains are called . Plasma. fluid portion of normal . unclotted. blood . red blood cells, white blood cells, and platelets are suspended in it. BLOOD COMPONENTS. Serum. liquid portion of clotted blood. SURFACE TENSION OF BLOOD. Representation. Chumphol Bunkhumpornpat, Ph.D.. Department of Computer Science. Faculty of Science. Chiang Mai University. Learning Objectives. KDD Process. Know that patterns can be represented as. Vectors. Blood vessels that carry blood from the heart The tiniest blood vessels Parts of the respiratory system a.k.a. Forensic Serology. Sources. www.crosscuttingconcepts.com. Forensic Chemistry by David E. Newton. Infobase. Publishing; 2007 . Take out your notebook and copy the following questions. Provide a short answer. .