Forensics Hair and Fiber

Cornelius Chavis

Hair/Analysis
A hair analysis determines exactly what chemicals are inside of you, including radiation, heavy metals like mercury, food chemicals such as aspartame, pesticides, bacteria and more. Hair analysis was first started in Europe to track down murder, rape, and robbers because they leave a trace where they can help identify the criminal more quicker. The protein in hair fiber holds the composition of the body tissues for a permanent period. By analyzing the hair fiber composition, a trained eye can tell what toxins have connected in the body tissues and what vitamins and minerals are emptied or too rough causing an problem in body function.

Techniques Used to ID Hair/Fiber

• Find Achohol abusers
• Find drug addicts
• Identify criminals
• Identifty a criminal case
• Find toxic substances
  
  
  Guesses/Justifications of Lab Findings

From the hair samples given I believe the long black hair can come from a female of the African American or Hispanic race. The other hair sample believed to be silver can come from a cocasion male or female with silver like substance in their hair which can through a regular persons hair off course.

Forensic Crime Scene Investigation

Cornelius Chavis

During the days the Wednesday 9-3-09 and Thursday 9-4-09 we had an investigation of a crime committed in which may have been a homicide or murder. Me and my group, group with the crew of: detective Lindi, detective Kelly, detective Noah, and detective Abrea have observed strands of evidence during the crime. We all discovered that there was a trace a blood, a footprint of the murder victim, his wallet filled with info that could lead to the crime and two strands of hair which could have been from the criminal and victim. The wallet contained a lot of supplies seen as such as a threat note, a number and time probably to seal the deal, life-insurance cards, and credit cards; but as we compared this to the footprint I could tell it was first-degree murder. The situation was that the victim was shooting as soon as he heard someone banging on his door and as soon as he stepped out for a few seconds the suspect strike and killed the victim by strangling him to death with a rope which left some hair samples to determine the murder was contact-to-contact.

Forensics Blood Type

A blood-group is or blood-type is a identification of blood on the presence or absence of inherited antigenic substances on the surface of the red blood cells.


Major Types of Blood

There are four different major types of blood which are the blood types A, B, O, and AB which can be both considered positive and negative. The AB blood type can receive blood from any kind of blood cell, and the O blood type has a the use of giving blood to any type of blood cell. All of the blood types together form one group called the ABO blood group system which is found in the human blood transfusion which are associated with the associated anti-A antibodies and anti-B antibodies, which are usually produced in the first years of life by sensitization to environmental substances such as food, bacteria and viruses.



Comment on Ability of Blood Mixing and Transfusions


Blood transfusing is the organized process of transferring blood from one person to another person who is in need of that blood. Blood transfusions are given to increase and enhance the blood's ability to carry oxygen, to restore the body's blood volume when someone has lost plenty of blood, to decrease the blood clotting, and improve a person's immunity to infection. Their is a liquid part of the blood which are blood components which include red blood cells, white blood cells, platelets, immunoglobulins, or a fresh frozen plasma.


What is meant by Positive or Negative Blood Types?


Like before there are a four different types of blood types in the ABO blood group system which are A, B, O and have a positive or negative. Their are results of getting a positive or negative in any kind of blood which means if people with A positive blood types can gain A positive, A negative, O positive, O negative; and can be safely given to people with A positive or AB positive blood types. People the blood type of B can gain A negative, A positive, O negative, O positive; and can be given to people with A negative or AB negative.



Comments and Analysis on Lab Findings.

• They say the darker the blood the more its positive.
• The lighter the blood is the more its negative.
• The blood sample giving to us seems more positive because of the darker fluid in the blood.
• The blood added with the antigen-A turned blue.
• The blood added with the antigen-B turned yellowish-orange.