Microwave Synthesis of 5‚10‚15‚20- Tetraphenylporphyrin Abstract: In this green chemistry experiment of 5‚10‚15‚20-tetraphenylporphyrin was synthesized from benzaldehyde and pyrrole. using microwave irradiation to heat the reactants.‚ The liquid reactants are absorbed on a solid support‚ silica gel‚ which acts as a Lewis acid catalyst to facilitate the reaction. The reaction forms a porphyrinogen‚ which is then oxidized to the porphyrin product by atmospheric oxygen. Column chromatography is performed
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MOUNTAIN RANGES By length * Mid-ocean ridge - 65‚000 km (40‚389 mi)[1] * Andes - over 7‚000 km (4‚350 mi) * Rocky Mountains - 4‚800 km (2‚983 mi) * Himalayas - approximately 3‚800 km (2‚361 mi)[citation needed] * Great Dividing Range - 3‚700 km (2‚299 mi) * Transantarctic Mountains - 3‚500 km (2‚175 mi) By Continent Asia * * Alborz (Iran) * Al Hajar Mountains (Oman‚ UAE) * Altai Mountains (Russia‚ China‚ Mongolia‚ Kazakhstan) * Annamite Range (Laos‚ Vietnam)
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Recommendation: Guillermo Furniture ACC/543 Monday October 8‚ 2009 YouKnew Abstract Guillermo Navallez is the owner of a successful furniture and manufacturing company located in Sonora‚ Mexico. Navallez’s establishment is known for its quality pieces‚ crafting a variety of chairs and tables from the abundant supply of timber in the area. In the late 1990’s‚ Navallez competitors became a real threat to the ongoing success of Guillermo’s Furniture and Manufacturing Company‚ producing like quality
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The 1920’s was a period of groundbreaking and progressive change in the United States. Women’s roles in society changed and the economy experienced great growth as a result of innovative ideas and entrepreneurs. However‚ at the same time it was an era of intolerance and conservative ideas like prohibition. Women’s roles in society changed during the 1920’s. As a direct result of the war‚ the number of women in the workforce rose and they moved into better‚ higher-paying jobs. After the Nineteenth
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Lecturer Department of Marketing Comilla University Subject: Submission of Term Paper on “ process of establishing a pottery Company. Sir‚ It is an immense pleasure for us to submit the Term Paper on “process of establishing a pottery Company.” to fulfill the requirement of BBA course of Entrepreneurial Development . We sincerely believe that this would help us in the long run and also enrich our repot writing capabilities. We are grateful for your valuable advices and humble cooperation
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Noise Associated with Power Tools on the Work Site The workers at company X have been in the construction industry for a very long time and most of them are unaware of the ill effects of being exposed to high level noise created from hand and power tools. While these tools may be very efficient‚ they produce large amounts of noise and vibrations. Being exposed over long periods of time without proper protective measures can put a person at risk for noise-induced hearing loss‚ accidents and
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good for his company‚ manufacturing computer controlled laser lathe (high tech method) ‚ representing manufacturer in Norway or selling coated furniture (current method). If there are various options to choose from‚ the option which has potential to generate maximum profit is selected. Budget helps the company in estimating the expected revenue and expenditure and hence the profit from a particular option. Speaking about budgets‚ Rodolfo can project labor hour required‚ product cost and expected
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Nagy‚ prime minister of Hungary and Alexander Dubcek leader of Czechoslovakia. By these countries trying to leave the Soviet Union‚ it violated the Warsaw Pact which means a “A war on one is a war on all” and anyone who tried to leave the Warsaw Pact would either get executed or pulled out of power by the Soviet Union. Eventually by 1989‚ the Berlin Wall falls and Germany is reunited a year later. The Cold War comes to an end after the fall of the Berlin Wall. The borders are opened and Germany
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The Tennessee Highway Patrol began on December 14‚ 1929 to take the place of the Tennessee State Police Force‚ which was formed in 1926 to be just like the Texas Rangers. In 1957 the Tennessee Highway Patrol was the first to use helicopters and operate patrol work. The Tennessee Highway Patrol is also known as the THP. The Tennessee Highway Patrol is the highway patrol bureau and is state police organization for the United States of Tennessee. The THP is in charge of imposing all federal
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Case Study Analysis * The Northwind Company - 1.0 Overview of Situation The Northwind Company‚ industry leader and national manufacturer of quality camping products‚ was established by Paul Clarey in 1975. At the beginning‚ the company focused on importing inexpensive sporting products and reselling them to discount retailers; then‚ in 1985‚ it manufactured a line of high quality tents and backpacking equipment
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