Chlorine Zachary Grindle Chemistry 1301 Professor Bott June 24‚ 2010 Chlorine has an atomic mass of 35.453‚ atomic number 17‚ is a member of the halogen family (VIIA)‚ and its symbol is “Cl”. Chlorine contains 17 protons and 18 neutrons in is nucleus. There are two isotopes for chlorine as well; Cl-35 and Cl-37. Chlorine was discovered in 1774 by Swedish chemist Carl Wilhelm Sheele. Sheele came upon chlorine when he put a few drops of hydrochloric acid (HCl)‚ then known as muriatic acid
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computers that contain a microprocessor. This type of computer is known by its familiar name- the PC. This is the type of computer that someone is mostly to use. As the name suggest‚ a microprocessor is a very small processor. This is in the form of a silicon chip like a Pentium Processor. Since they use smaller processors‚ microprocessors are smaller than the other form of computers‚ yet they are the most important of all. They are also far less expensive than the other categories. Microprocessors
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elements. These residual elements were either present within the raw materials used in the production process e.g. iron ore and scrap steel additions‚ or they were added in the production process for a specific purpose‚ e.g. deoxidization by means of silicon or aluminium. Hence they are called residual elements to distinguish them from alloying elements that are deliberately added according to specified minimum amounts. The term “cleanliness” refers to the amounts of various phases such as oxides‚ sulphides
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ENHANCING POWER ELECTRONIC DEVICES WITH WIDE BANDGAP SEMICONDUCTORS BY SUNEEL KUMAR M-TECH(POWER ELECTRONICS) Silicon carbide (SiC) unipolar devices have much higher breakdown voltages than silicon (Si) unipolar devices because of the ten times greater electric field strength of SiC compared with Si. 4HSiC unipolar devices have higher switching speeds due to the higher bulk mobility of 4H-SiC compared to other polytypes
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1.7.2 Coal Bottom Ash in Self-Compacting Concrete Coal Bottom Ash has gained a great consideration as an alternative for replacing fine aggregates. Coal Bottom Ash has physical characteristics are same as that of naturally found sand which makes it suitable for replacing sand in concrete. Coal Bottom Ash represents good pozzolanic element reactivity when it comes in contact with finer elements. Many researchers in their research work claimed that the properties of Self-Compacting Concrete comprised
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Design Methodologies and Tools • Design styles – Full-custom design – Standard-cell design – Programmable logic • Gate arrays and field-programmable gate arrays (FPGAs) • Sea of gates – System-on-a-chip (embedded cores) • Design tools 1 Full-Custom Design • Every gate is carefully designed and optimized – Hierarchical design may be used‚ place-and-route tools typically used • Advantages: – High density‚ ideal for high volumes – Performance optimization • Disadvantages:
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Pg. 25 Once drug goes into mucosal cells‚ the concentration gradient will decrease. Blood supply to mucosal cell keeps removing drug continuously so the drug conc is smaller & this (heavy vascularisation) maintains constant gradient so that the drugs are constantly removed into the blood stream pH in stomach about 2 Implication: weak acids absorbed readily‚ weak bases not absorbed as readily Implication: some of the drugs may not be able to suvive that acidic environment. & they may disintegrate
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focuses on Martha McCaskey. McCaskey is a relatively recent Harvard B-School grad on the fast track at Seleris Associates. She is a consultant who specializes in competitive analysis for corporations. McCaskey has been assigned as lead on project Silicon 6. She has a strong track record for delivering quality on her projects‚ which is why she was chosen as lead for this project. The focus of the project is to reverse engineer cost structure and manufacturing processes for the competitor of a key client
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We‚ as humans‚ often use that metaphor by comparing‚ for example‚ the heart to a pump or the brain to a computer. The second reading “Souls in silicon” is also another example that reinforces this metaphor. Transferring our minds into a machine doesn’t change the way the mind works; it still has control over the new “body” and it still has the power to make the body do the average everyday life
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In Forrest H. Nielsen’s article Silicon: An Essential Nutrient of Good Bone Health published by the USDA (United States Department of Agriculture) on their website‚ he states “…recent research confirms that silicon stimulates the formation of collagen‚ a protein that gives bones their strength and flexibility‚ joint cartilage its cushioning ability‚ and a scaffold upon which
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