Another source discussing hair analysis‚ emphasizes the problem with the presentation stage in expert witness testimony in court (3). Not only has contamination been a reason for false convictions (1)‚ but also the ways in which the testimony from the hair analysts is worded (3). Investigations of how the phrasing and wording of expert witness testimony impacts the final court decision have been done‚ revealing the misuse of words in court have contributed to wrongful convictions‚ which have created
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Physical Evidence? Physical evidence is any object that can establish that a crime has been committed or can link a crime and its victim or perpetrator. Almost anything can be physical evidence‚ to list the objects that could be used as physical evidence is impossible. (Saferstein‚ R. 2009) Common Types of Physical Evidence There are several common types of physical evidence that are found at a crime scene and can be used in cases. However‚ the weight of a given piece of evidence is ultimately
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(Lynch & Duval‚ 2011). This theory better known as "Locard’s Exchange Principle” is the foundation of the forensic study of trace evidence as we know it today. Trace evidence is very important in forensic investigations as this evidence includes different types of microscopic materials as well as some materials that are easily visible to the naked eye. Trace evidence examination is the analysis of small particles in order to assist in establishing a link between a suspect and the victim of a crime
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Fiber Optic Connector Assembly The three fiber geometry parameters that have the greatest impact on splicing performance include the following: Cladding diameter—the outside diameter of the cladding glass region. core/clad concentricity (or core-to-cladding offset)—how well the core is centered in the cladding glass region fiber curl—the amount of curvature over a fixed length of fiber These parameters are determined and controlled during the fiber-manufacturing process. As fiber is cut and
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Advantages and Disadvantages of Fiber Optics An optical fiber is a thin and flexible fiber that carries the light between the two ends of the fiber. Optical fibers are widely used in Fiber Optic Communications‚ which is the transmission over longer distances at higher bandwidths than other communications. A fiber optic communication system consists of three components: an optical transmitter‚ a fiber optic cable‚ and an optical receiver. The optical transmitter converts electrical signal to
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Chapter II Review of Related Literature Chemical Wood Pulping Chemical wood pulping involves the extraction of cellulose from wood by dissolving the lignin that binds the cellulose fibers together. The 4 processes principally used in chemical pulping are kraft‚ sulfite‚ neutral sulfite semichemical (NSSC)‚ and soda. The first 3 display the greatest potential for causing air pollution. The kraft process alone accounts for over 80 percent of the chemical pulp produced in the United States
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Understand Your Fats and Fiber SCI/241 August 16‚ 2012 Cindy Portman I am going to discuss what I understand about fats and fiber. Yes‚ your body needs fats. Dietary fats are essential to give your body energy and to support cell growth it will help protect your organs and help keep your body warm. It helps your body absorb some nutrients and produce
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spreading of a light pulse as it travels down a fiber when light pulses launched close together(high data rates) spread too much and result in errors and a loss of information. The spectral width determines the number of different wavelengths that are emitted from LED or laser. One way to reduce chromatic dispersion is to narrow the spectral width of the transmitter. Chromatic dispersion can be compensated for with the use of dispersion-shifted fiber (DSF). Laser has a more narrow spectral width
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Understand Your Fats and Fiber Jennifer Taylor SCI/241 December 6‚ 2012 Jeff Mundt Understand Your Fats and Fiber Bad fats are saturated and trans fats. Saturated fats are mostly in meats‚ dairy products and tropical oils. Saturated fat raises both bad cholesterol and good cholesterol‚ while trans-fat only raises bad cholesterol. This makes trans fats technically worse than saturated fats. The better fats would be monounsaturated and polyunsaturated. Monounsaturated will lower your cholesterol
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Value and Preservation of Evidence Kaplan University CJ370-01 January 16‚ 2012 The value of footprint or footwear evidence is heavily important. The most valuable details are signs of wear‚ characteristic fittings or marks of fittings that have come off‚ injuries‚ marks of nails and pegs‚ especially when these are irregularly placed‚ and repair marks. If they are particularly characteristic or occur in sufficient numbers‚ such details may form decisive evidence. In the interest of thoroughness
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