Blood residue

Blood and the stain patterns created during these acts of violence are of particular interest to the forensic examiner. Bloodstains are routinely utilized to make critical forensic links between victim(s), suspect(s), physical evidence, and the crime scene

Introduction Blood Spatter Analysis (BPA) is a forensic technique to interpret bloodstain in order to understand and recreate a crime scene that involve blood-shedding event. BPA is regarded as a very crucial process in crime investigation as it provides evidence in easing a trial process in court. The BPA was considered as a significant area of science in crime investigation only after the year of 1955, even though, the first study was dated back in the late 1890. There are several questions arise

bloodshed. Analysts examine the size, shape, distribution, and location of the bloodstains to draw about what happened. BPA uses principles of biology (behavior of blood), physics (cohesion, capillary action and velocity) and mathematics (geometry, distance, and angle) to assist investigators in answering questions like: • From where did the blood originate from? • What was the cause of the bloodshed? (weapons used) • From what direction was the victim wounded? • What were the positions of the victim/ attacker

2005). BPA seeks to define the facts surrounding an incident in question helping define an objective history for an event (Bevel, & Gardner, 2008). Bloodstain pattern analysis is based on a simple theory stating that the fluid characteristics of blood will react to any external forces in a predictable and plausible fashion. (James, Nordby, & Bell, 2014). In due course, these bloodstain patterns define the nature of the event that created them which subsequently the analyst evaluates to determine

With a drop of blood scientists can paint whole pictures. If blood can do so much with so little, it’s crazy to say it’s not valuable evidence in a crime scene. Blood splatter can verify the position of the people involved in the crime, as well as give clues on how people were injured or died. Mainly, blood splatter eliminates many possibilities. It can show injuries the victim had, what happened as they were dying, and the angle the crime happened at (McShane) To further add on, blood splatter produces

Trigonometry in Blood Spatter Analysis After watching the TV show Dexter, I suddenly had a passion for Forensic investigations. A specific area in this field that I had the most passion for was Bloodstain Pattern Analysis. After going through this year’s Foundations 20 class, I developed an interest in the topic Trigonometry. When doing research, I found out that the two things that sparked an interest in me were somehow related. Yes, I know what you’re thinking. How could blood be possibly related

helices; these α helices are comprised of 80 amino acid residues, which equals to 30% of the protein is helical. A chain contains a five stranded β sheet composed of amino acid residues 67-116, and comprising 15% of the protein. These residues, however, aren’t directly involved in the sheet. The A chain folds into three random domains. The first domain forms the bottom of the A chain. This domain contains the amino-terminal through 117 residues, which is dominated by the β sheet, making it appear as

The major use of Enzyme Linked Immunosorbent Assay (ELISA) is to titrate antibodies against specific antigens (Crowther, 1995). This method involves an enzyme, which reacts with a colourless substrate to form a coloured product, is covalently linked to a specific antibody that recognises a specific antigen. If the antigen is present, the antibody-enzyme complex will bind to it, and the enzyme component of the antibody-enzyme complex will catalyse the reaction which results in a coloured product (Berg

Hereditary Hemochromatosis is a genetic disorder found on the HFE protein and has been found to alter the body’s capability to manage the absorption of iron. Hemochromatosis originates from the Latin terms Hemo- (blood) + chromo- (color) + -osis (disease or abnormal increase). Hemochromatosis can have early signs and symptoms. These may include one to suffer from joint pain, abdominal pain, show signs of weight loss and potentially show a reduction in sexual desire. Other signs and symptoms, which

important because it plays a really significant role in blood clotting and bone health. Vitamin k was “discov-ered inadvertently by feeding animals a fat-free diet, scientist noted that chicks fed this diet developed a bleeding disorder that was cured by feeding the green plants” (HMKN 205 notes). Vitamins are divided between water soluble vitamins and fat soluble vita-mins, however “Vitamin K is a fat-soluble vitamin that plays a huge role in blood clot-ting and also have some effects in bone health”