PPT-Blood Spatter Pt 2: Projected Blood

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 . WARNING. Contains graphic images. Angle of Impact. The acute angle formed between the direction of a blood drop and the plane of the surface it strikes. . Arterial spurting (or gushing) pattern. . Bloodstain pattern(s) resulting from blood exiting the body under pressure from a breached . Glass . Blood. Laminated Glass . Laminated Glass is made up of a vinyl laminate (PVB) layer bonded together between two panes of glass under heat and pressure. Laminated glass may crack upon impact, however the glass fragments typically stick to the protective inter-layer rather than falling free and potentially causing injury. It breaks exactly like the windshield of your car, cracks but is held in place by the vinyl laminate layer.. . By : Cyndreka Lindsey. CHEM-4201. 11/20/2014. Outline. Background. Spatter Analysis. Blood Patterns. Common Tests. Writing Assignment. Questions. Background. Before blood analysis detectives had to relay on their instincts and criminal confessions to solve a crime. Blood spatter . 1939—spatter . patterns first . analyzed. Blood may . spatter . when a wound is inflicted. Blood . spatter . pattern—a grouping of blood stains. Patterns help to reconstruct the events surrounding a shooting, stabbing, or beating. Yong Ma. Sparse model space for projected Hessian. Quasi-Newton FWI. Eigenvector (largest . eigenvalue. ). Eigenvector (smallest . eigenvalue. ). The success or failure of any criminal investigation often depends on the recognition of physical evidence left at a crime scene and the proper analysis of that evidence.. Crime scenes that involve bloodshed often contain a wealth of information in the form of bloodstains.  The pattern, size, shape, and the location of such stains may be very useful in the reconstruction of the events that occurred. . Chapter 8. Blood Spatter . #1…it’s not “. splatter. ”! . . Properties of blood affect pattern:. Fairly . high surface . tension (cohesion). Very . viscous. Sticky-adheres . to external . surface (adhesion). 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 6’3’’ 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.. Bloodstain Science. Warning: Some material in this presentation and related videos may be too graphic for some people. . What . does the abbreviation BPA represent? . Bloodstain Pattern Analysis. What can an investigator learn from the analysis of a blood spatter?. Public School Enrollment in Wisconsin. Presentation to the. Applied Demography Convention. January 9, 2014. Outline. Examine current public school enrollment trends in the State of Wisconsin.. Explore the broader demographic trends which influence public school enrollment.. Bloodstain Science. T. Trimpe 2006 http://sciencespot.net/. Warning: Some material in this presentation and related videos may be too graphic for some people. . What . does the abbreviation BPA represent? . 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. 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. . SFS3 Students . will analyze the use of toxicology, . serology. , and DNA . technology in . forensic investigations. . d. . Differentiate the forensic techniques used to distinguish human and . animal .