Flame Tests Atomic Emission and Electron Energy Levels AES‚ or atomic emission spectroscopy‚ is a method which chemically analyzes the particular wavelength of a sample element to identify and determine the abundance of this certain element. The wavelength of the atomic spectral line unveils the identity of the element while the emitted light intensity is proportional to the number of atoms in the element. The flame test is also a very effective way to identify an individual element. The color
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their environmental impact‚ such as monitoring their release of Carbon Dioxide (CO2) into the atmosphere. As you can see in the table below‚ both companies contribute to total CO2 emissions (“EPA facility level GHG emissions data‚” 2014). Eastman Chemical‚ unfortunately‚ is the larger contributor.Comparison CO2 Emissions Eastman Chemical and Domtar PaperTo create what we want‚ these companies are required to convert renewable and non-renewable natural resources in contemporary industrial materials
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brain‚ and ablation - intentionally cutting out pieces of the brain. The brain imaging technologies that will be examined are electroencephalography (EEP)‚ functional magnetic resonance imaging (fMRI)‚ magnetic resonance imaging (MRI)‚ and positron emission tomography (PET). These brain imaging technologies are either functional or structural. Functional BIT’s are ones that are used to identify metabolic disease and lesions on a finer scale‚ while structural BIT’s are ones that deal with the structural
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Angel Houston May 2‚ 2012 Will Restricting U.S. Carbon Emissions Damage the U.S. Economy? An important issue affecting the world today is climate change due to the increase in the amount of greenhouse gases that is released into the atmosphere. Greenhouse gases are gases that accumulate in the atmosphere due to human activity and the earth’s natural biological and chemical processes. The four major greenhouse gases are carbon dioxide ‚ methane‚ nitrous oxide‚ and fluorinated gases (U.S. Environmental
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ACTS AND POLICIES In this assignment I will explain the legal‚ ethical and operational issues in relation to the use of information. Legal issues Legal issues are various items of legislation (law) to protect the use of business information. Data protection act 1998 Many business store information about people‚ whether it’s for potential customers or previous clients. The data protection act protects the information held about people from being misused. The information businesses store
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screening to for the image needed. With this application the target tissue must absorb the compound that contains the isotope; one of the most popular used isotopes for scans is Technetium -99m‚ this isotope last only for a period of time. Positron emission tomography (PET) is another technique used. With the radiation therapy this is the method used to treat cancers‚ to apply this treatment a boron-11 isotope solution is placed within the tumor which bombards it with neutrons; particles are only produced
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How did the corporate culture of Enron contribute to its Bankruptcy? Once a sound company listed in fortune 500‚ Enron‚ lead to downfall because of deceptive accounting system incorporated within the organization. Enron’s dubicious finance finally collapsed in Dec 2‚ 2001 as it filed Bankruptcy in New York Bankruptcy court. The corporate culture of Enron focused on financial performance neglecting the stakeholder’s value .The relentless emphasis on the importance of the shareholder’s value created
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Biological Approach to Depression The biological approach is based on the idea that depression has a physical or organic cause. One explanation suggests that some people are simply more genetically inclined to develop depression‚ as Hecimovic suggested that it was caused by a mutation in the 5-HTT gene‚ which was responsible for coding for serotonin production‚ and that this mutation is inherited. Family studies‚ twin studies and adoption studies have all helped support the role of genetics in
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Electroencephalography (EEG) * electrical – v high temp reso‚ relatively poor spatial Indirect measures Neural activity consumes O2‚ generate electrical signals – compensate for O2 consumption – more oxy blood pumped into region 1. Positron emission tomography (PET) * radioactive isotopes (O2 15) injected – areas of brain which take up more = more active than other areas * measures blood flow 2. fMRI * measures rel amount of oxy blood flowing to diff parts of brain - oxy blood =
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There are several methods that both measure and scan the cortical functions of the brain and they both have their individual strengths and weaknesses. In a Positron Emission Tomography (PET) scan the scanner injects the patient with glucose containing radiotracers which are radioactive and emit positrons which are then picked up by the scanner. As glucose is used for energy in the body it will travel to the brain and distributes itself to the parts of the brain need it most at that time. When it
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