Who normally conducts the preliminary investigation? What are some of the actions the first responders can take once they arrive at the scene of the crime? Since the preliminary investigation starts when the first emergency call is received‚ it is typically administered by the patrol officers who are first to respond to the scene. First responders can either preserve or contaminate the crime scene‚ which can possibly result in either the success or failure of the prosecution. Accordingly‚ the steps
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primary alcohols used were; methanol and ethanol‚ and the secondary alcohol was; isopropyl. Of this the secondary alcohol‚ isopropyl was discovered to be the most effect alcohol to make DNA precipitate‚ as it produced the most amount of DNA. This investigation of extracting DNA is significant due to the study taken providing understanding and knowledge on DNA; this allows people to find out information of the cell structure‚
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Franklin 1 Jonathan Franklin Allen Layne Criminal Investigations 18.OCT.2013 Investigations And The Principles A successful crime scene investigation depends deeply on the collection and analysis of various kinds of evidence. Forensic scientists rely on the classification of certain evidence and they have different ways of dealing with it. One major difference is biological and physical. Physical evidence refers to the collection of anything at the crime scene that comes
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Criminal Investigation Research Paper Crime Scene Investigator Crime Scene Investigator POSITION A crime scene investigator is responsible for multipart crime scene investigations‚ evaluation of the crime scene‚ various types of equipment along with developing‚ securing‚ and packaging physical evidence for scientific evaluation and comparison (U.S. Department‚ 2007). Detailed reports on the observations and activities at the scene next to testimonies in court regarding the findings and
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Ionic Reactions Introduction: Today we are going to observe the chemical changes when mixing two solutions. Some will change colors‚ produce gases proving if the solutions are soluble or insoluble. Materials and Methods: I first pulled out the small wells and place two drops of the Cobalt (II) Nitrate in seven of the wells. I then moved to the next row and placed two drops of Copper (II) Nitrate in the next row‚ into seven of the wells‚ and so on with the other three Nitrates. I then cut off
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By y.c.pong Introduction: When you heat an egg‚ the egg white clump together and turned white. It is because the protein in egg white undergoes denaturation‚ the cross linkage(the hydrogen bonds‚ ionic bonds and disulphride bonds) which maintain the protein shape destructed‚ so protein lose its tertiary conformation. This denaturing process is very important‚ because before protein can be used in digestion they must be unfolded. Part A: denaturation of egg white Aim: To examine the factors
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of reaction with respect to [H2O2] and [2I-]. I aim to find out the activation enthalpy of the reaction by finding the rate of reaction at different temperatures using the Arrhenius Equation. The experiment will go as follows: Into a conical flask put 15cm3 of distilled water and add 2cm3 of [X]moldm-3 potassium iodide (KI) solution and 1cm3 of 2moldm-3 sulphuric acid. Then add to this 2.5cm3 of 5vol (0.42moldm-3) hydrogen peroxide (H2O2). For the second part of my investigation‚ the
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PENDULUM INVESTIGATION Aim of the investigation The aim of the pendulum investigation is to see what will happen if I change a variable whilst I swing a pendulum and see the effect which it has on the pendulums time to complete one whole swing (from where it starts‚ to the opposite end‚ and back again). This will give me an insight into what will effect the time of the swinging of the pendulum‚ be it weight‚ string length‚ the angle‚ or the swinging point. Planning my investigation I will
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Natalie Blenker Mrs. Harris I.B. Theatre HL2 Period: 7 March 1‚ 2012 A research investigation on what specific skills an actor would need learn in order to convincingly portray the role of Silvio in Carlo Goldoni’s‚ A Servant of Two Masters. Carlo Goldoni wrote the comedy “Arlecchino servitore di due padroni”‚ which translates into modern English as The Servant of Two Masters‚ a commedia dell’Arte-style play. The performers of Commedia were often illiterate‚ and as such there was
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Unit5: Midterm Essay CJ21-Criminal Investigation Professor Yocum September 28th‚ 2010 Throughout the years the type of crimes and amount of crimes committed has changed significantly and has played a major role in the American society. What is crime? As defined by Frank Schmalleger (2007) “crime is a conduct in violation of the criminal laws of a state‚ federal government or a local jurisdiction where there is no legally acceptable justification or excuse” (p.7). Criminal investigators have
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