Two methods that are used to determine the scale and size of bloodstain essay

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Two methods that are used to determine the scale and size of bloodstain essay

Geberth, Practical Homicide Investigation Reprint: Law and Order, Vol. The trails of blood in a crime scene or castoff blood patterns are reasonably straightforward and understandable. Determining areas of convergence and origin employing string methods or trigonometric methodologies are more complex and call for a trained specialist.

The scientific analysis of bloodstain patterns requires extensive training and experience, which goes beyond the normal crime scene process. Furthermore, there are a number of different definitions and opinions by various experts in the field, which tend to confuse the average investigator.

The terms used to describe bloodstain patterns, are oftentimes confusing to the average investigator. Such terms as bloodstain spatter or splatter might be used interchangeably. The reference to pattern analysis or pattern interpretation further confuses the issue because the word interpretation connotes subjectivity to the scientific analysis and evaluation of bloodstain pattern evidence.

According to the recognized experts in the field the proper term is Bloodstain Pattern Analysis BPAwhich implies a structured approach in evaluating that, which is to be examined.

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It is one of several specialties in the field of forensic science. The science of bloodstain pattern analysis applies scientific knowledge from other fields to solve practical problems.

View Essay - Week 6 - Bloodstain Analysis from CMRJ at American Public University. Select two types of bloodstains patterns discussed in the Bevel book and discuss what each can tell analysts. one can simply look at a %(8). Because’bloodbehaves’accordingtocertain’scientific’principles,’trained bloodstainpatternanalysts’canexamine’the’blood’evidence’left’behind’[and’. The tools you need to write a quality essay or term paper; Saved Essays. You Have Not Saved Any Essays. Through bloodstain pattern analysis, analysts can determine, among other things, the type of injuries received, the order in which the injuries were received, whose blood is present at the scene, the types of weapons used in the crime /5(3).

The presence of airborne pathogens and other biohazards such as AIDS, hepatitis and hepatitis B, meningitis and even tuberculosis create a potential risk. Investigators should adhere to the following procedures at any crime scene where blood or body fluids are encountered.

The CSI should wear approved disposable gloves while in the crime scene and remain aware that blood and other body fluids may carry diseases. Consider wearing a disposable mask while in crime scenes where airborne communicable diseases such as meningitis or tuberculosis might exist.

Wear eye protective and disposable infectious disease gown to protect clothing when exposed to large amounts of blood or other body fluids. After the investigation is complete, dispose of gloves, masks, and gowns contaminated by blood or body fluids in a biohazard bag and wash hands thoroughly with an antiseptic hand rinse.

Before returning to the station, wash hands again with water and a bacterial liquid hand wash, i. Restrict the number of investigators on the scene who may come in contact with the scene of the potential infection exposure. Advise any investigators on the scene who may come in contact with the scene of the potential infection exposure.

Decontaminate all equipment used prior to your return to the station. Change clothing contaminated with blood or other body fluids immediately and decontaminate. Dispose of contaminated supplies as recommended in this protocol. Skin provides a very effective barrier for the prevention of infectious diseases.

Wash all contact areas as soon as possible after exposure to help prevent contamination.

Two methods that are used to determine the scale and size of bloodstain | Essay Example

Wounds such as cuts, sores, and breaks in the skin, regardless of the size, provide an entrance for infection into the body and should be properly bandaged. Report all significant exposures to blood or other body fluids within 24 hours of exposure.

Two methods that are used to determine the scale and size of bloodstain essay

Bloodstain patterns at the scene or from the clothing of principals in a case can be used to confirm or refute assumptions concerning events and their sequence. In addition, bloodstain patterns can illustrate the position of the victim, such as standing, sitting, or lying.

Bloodstain evidence can also show evidence of a struggle. Furthermore an effective bloodstain pattern analysis can confirm or refute statements made by principals in the case.

For example, "Are stain patterns on a suspects clothing consistent with his reported actions? Or, "Are stain patterns on a victim or at a scene consistent with accounts given by witnesses or the suspect"?

Simpson as the suspect.

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Simpson, the blood of his ex-wife Nicole Brown, and the blood of Mr. The famous "bloody gloves" that were presented as evidence provided the crucial linkage.

One glove was found at Bundy Drive, the scene of the double homicide. The matching right hand glove was found at O. DNA testing of the glove found at O. The socks found in O. Simpson and his ex-wife Nicole, who was one of the murder victims. Crime scene reconstruction and the presence of bloodstains and patterns in the scene are very important considerations in the crime scene search process.

The discipline of bloodstain pattern analysis BPA considers the location, shape, size, distribution and other physical characteristics of the bloodstains in the scene.There are two methods that are used to determine the scale and size of bloodstain (Saferstein, ).

One of the methods that used is the grid method. The method involves the setting up of grid in form of squares whose dimensions are known.

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Currently little is known about the methods used by bloodstain pattern analysts to select bloodstains when determining the region of origin. Fourteen analysts two sets of selection criteria were established, one for use when the impact pattern when using a manual method to determine the region.

There are two methods that are used to determine the scale and size of bloodstain (Saferstein, ). One of the methods that used is the grid method. The method involves the setting up of grid in form of squares whose dimensions are known.

Two methods that are used to determine the scale and size of bloodstain Essay Sample

Start studying Chapter Crime-Scene Reconstruction: Bloodstain Pattern Analysis. Learn vocabulary, terms, and more with flashcards, games, and other study tools. View Essay - Week 6 - Bloodstain Analysis from CMRJ at American Public University. Select two types of bloodstains patterns discussed in the Bevel book and discuss what each can tell analysts.

one can simply look at a %(8).

Bloodstain pattern analysis - Wikipedia