Measures of Astronomical Distances • Let’s view the Universe in terms of kilometres – The size of the observable universe is roughly 130‚000‚000‚000‚000‚000‚000‚000 km ! - Obviously measuring astronomical distances in km is inconvenient. - We need much BIGGER units of distance: • Some commonly used distance units: 1 ly (light year) = Distance traveled by light in 1 year = 9.46 trillion km 1 AU (astronomical unit) = average distance between the Sun & Earth = 150 million km A unit of distance‚
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PREFORMULATION STUDIES ON PHENYTOIN AGGLOMERATES PREPARED BY HOT MELT Dr. Maged Fawzy DEEF Pharmaceutical Industries Company‚ SA This work was a part of Master thesis presented in Faculty of Pharmacy‚ AlAzhar University‚ Egypt 2007 INTRODUCTION Hot Melt Hot melt agglomeration is one type of wet granulation techniques that may be utilized to enhance the dissolution profile of water insoluble drugs. Hot melt agglomeration is also called thermoplastic granulation and it may be defined as the
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Chapter 2 REVIEW OF RELATED LITERATURE AND STUDIES Introduction This chapter indicates the ideas‚ also the history‚ relevant to the experiment to provide information and further elaborate different standpoints that were the foundation of the proposed study‚ also on the background study of the different methods and concepts used by other researchers that applies to the present study. In order to develop new method and procedures‚ careful review of literature and studies must be done for the development
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Marsden‚ developed his gold foil experiment after his disapproval of the “plum pudding model”. If Thompson’s experiment was correct‚ then all of the alpha particles would travel right through the foil. What Rutherford did was shoot a positively charged helium particle towards a very thin layer of gold foil. He expected the positive particles to move a small distance from their path as they passed through the sea of positive charge. However‚ the ending result of this experiment was that the positive particles
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he saw another one. It was another clown‚ except‚ he was looking child-friendly. He was holding an inflated‚ squeaky balloon sword with something that looks like blood. Charlie thought‚ ¨This is just stupid‚ how is a clown with a sword made out of helium supposed to kidnap me?¨ The clown was heading towards him‚ but then he tripped on his giant shoelaces‚ that he uses for strangling victims. Charlie made a run for it‚ and headed straight to the New Jersey Police Department. When he opened the police
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A pressurized vessel contains a gas that starts at 2.00 and volume of 3.4 ml. The volume increases to 4.6 ml. What is the new pressure? A.0.68 atm B.615 atm C.63.6 atm Correct D.1.5 atm E.none of the above Answer Key: D Question 2 of 12 4.0/ 4.0 Points What is the molar volume of a gas at STP. Correct A.22.4 L B.16.0 L C.2.00 L D.6.02 L E.Not enough information to answer the question. Answer Key: A Question 3 of 12
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Don’t want to hassle through packing bags and travelling miles away to enjoy the Thanksgiving long weekend? If you have plans to stay back in Chicago with your family‚ you have enough to be thankful for – coz Chicago has a lot to offer! The extravaganza of the city and its merry crowd will guarantee the best holiday weekend with your family and kids. 1. Zoolights at Lincoln Park With 1‚000 animals and nearly 1 million lights‚ the Zoolights at Lincoln Park are not to be missed. The light exhibits
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chromatography with mass detector and headspace sampler Conditions of the chromatograph Agilent 7890A (LCTG CGMS): * Column DB-624 30m 0.25 mm 1.4µ (CG-2) * Injector temperatura: 160ºC * Flux: 1.0 ml/min * Split: 5:1 * Carrier gas: Helium * Time per test: 30.6 min Conditions of the detector 5975C inert MSD * Data adquisition mode: Scan/SIM * Mass: from 30 to 200 * Threshold 75 * Temperature of the source: 230ºC * Quadrupol temperature: 150ºC Conditions
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1. What was Earth like in its infancy? How does it compare with the Earth today? In the very beginning of earth’s history‚ this planet was a giant‚ red hot‚ roiling‚ boiling sea of molten rock - a magma ocean. The heat had been generated by the repeated high speed collisions of much smaller bodies of space rocks that continually clumped together as they collided to form this planet. As the collisions tapered off the earth‚ it began to cool‚ forming a thin crust on its surface. As the cooling continued
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perturbation by an unknown planet. The planet named after the famous Greek god of the sea is Neptune. Neptune is the eighth planet from the sun. It is dark‚ cold and whipped by supersonic winds. Neptune is a gas giant; it is made of the hydrogen and helium. The planet takes about 165 Earth years to orbit the sun. A day on Neptune is 16 hours and 6.7 minutes. Neptune orbits the sun at a distance of 30.1 AU. In 2011 it will complete its first orbit since its discovery in 1846. Neptune is the fourth-largest
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