Solar Powered Traffic Light Solar traffic lights are signaling devices powered by solar panels positioned at road intersections‚ pedestrian crossings and other locations to control the flows of traffic. They assign the right of way to road users by the use of lights in standard colors (red - amber/yellow - green)‚ using a universal color code (and a precise sequence to enable comprehension by those who are color blind). Most of the solar traffic lights have battery back-up for functioning during
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T DNA IN CRIMINAL INVESTIGATION 5Transportation and storage of DNA evidence is also extremely important. Whentransporting DNA evidence the officer should be aware that having the evidence in directsunlight can cause the evidence to become compromised (DNA Evidence‚ 2012). The officershould ensure that they do not place the evidence in an environment where it can get hot‚ insteadthey should place it in a cold environment to preserve it (DNA Evidence‚ 2012). It is importantthat the DNA evidence be
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Investigation # 1 “The fascinating life of Thomas Graham” (1805-1869) Thomas Graham made his own path by studying to be a chemist; instead of becoming a minister in the Church of Scotland like his father wanted. Graham became a student at the University of Glasgow in 1819 at the age of 14. After receiving his M.A.‚ he became a professor of chemistry at numerous colleges‚ including
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Public Transportation Versus Private There are some people that prefer to use private transportation when getting around‚ others prefer using the public‚ which one is better? In this following essay I will bring up three arguments of the other side and rebut them with my opinion. The arguments are as follows: using private transportation is convenient‚ unlimited and environmental. First‚ I will argue the convenience issue. What it more convenient than waking up in the morning‚ get
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Nowadays‚ many kinds of public transport can be seen on the road‚ even though people drive their own car. It is usually on time and economical. Firstly‚ one of the advantages is that using public transport is very economical. Taking buses and trains is cheaper than using private cars. If people have their own car‚ they have to pay a lot of money for service‚ repairs‚ and insurance. It maybe will cost all the money people earn. Moreover‚ there are many discounts for some individuals‚ like students
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CELL TRANSPORT MECHANISMS AND PERMEABILITY Zack Johnson Human Anatomy & Physiology Lab 2101 Instructor: Alan Byboth‚ M.S. 10/4/12 Abstract- The cell is invaluable building block of all biological life on this planet‚ and one of its most important and unique characteristics is its ability to be selectively permeable with its plasma membrane. This outer membrane’s sophisticated mechanisms of transport through its bilayer are vital in maintaining homeostasis in the cell and the entire
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of public transport This is a website informing towards young people some advantages and disadvantages of public transport. Many of us are in these days use our own vehicles to get to our destination and utilizing it as our ‘daily use’‚ whereas numbers of public transport are reducing since many people are passing their driving test and buying their own cars. This is leading to pollution in the Earth; hence I will be mentioning some advantages and disadvantages of public transport. Firstly
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The Compound Light Microscope Commonly binocular (two eyepieces)‚ the compound light microscope‚ combines the power of lenses and light to enlarge the subject being viewed. Typically‚ the eyepiece itself allows for 10X or 15X magnification and when combined with the three or four objective lenses‚ which can be rotated into the field of view‚ produce higher magnification to a maximum of around 1000X generally. The compound light microscope is popular among botanists for studying plant cells‚ in
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Locard’s Exchange Principle and the use of Fingerprints: Edmond Locard (1877-1966) was a French scientist specialised in both medicine and law. Inspired by the work of Hans Gross‚ it was Edmond that created the concept that all objects of any material should leave traces of itself upon whatever it touches‚ even if it is the minutest amount‚ simply put as “Every Contact leaves a trace‚” Locard (1923). This is commonly known as Locard’s Exchange Principle. He believed that in circumstances such as
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This force of agents was later named the Bureau of Investigations by
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