Traditional way of synthesizing sensitive rhodamine starts with rhodamine B‚ amino compound‚ and some alkali additive in the presence of weak base. However‚ for RH-PY‚ the stearic hindrance of pyrene slows the reactivity‚ and the reaction does not go to completion. Therefore‚ the reaction procedure was modified as follows. First‚ HATU and DIPEA were used to activate the carboxyl group of rhodamine B‚ then the activated rhodamine B was reacted with 1-aminopyrene. By introducing this method‚ the reaction
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is the subject of many studies and investigations‚ such as William C. Dement and Christopher Vaughan’s paper‚ “Sleep Debt and the Mortgaged Mind‚” June J. Pilcher and Amy S. Walters’ article‚ “How Sleep Debt Hurts College Students‚” and Matthew Ashton’s‚ “A Greater College Debt.” Sleep debt is a massive problem; this idea is easily introduced in William C. Dement and Christopher Vaughan’s paper‚ “Sleep Debt and the Mortgaged Mind‚” with the explanation of the true cause of the Valdez incident‚ a
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Introduction: The purpose of this lab was to learn how to use salicylic acid to make aspirin. Aspirin is the most widely used over-the-counter drug in the world. The average tablet contains about 325 milligrams of acetylsalicylic acid with an inert binding material such as starch. Aspirin is used to relieve pain‚ reduce inflammation‚ and lower fever. Aspirin originally was derived by boiling the bark of the white willow tree. Although the salicin in willow bark has analgesic properties‚ purified
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experiment‚ the hood in the lab was used. The curds were placed in a 100 mL beaker and extracted using 30 mL of ethyl acetate. The curds were crushed with a stirring rod. This extraction was then gravity filtered through a funnel fitted with the filter paper. A rubber policeman was used to scrape the beaker to get as much casein as possible. This casein was then put aside in the hood safely. Boiling chips were put into an Erlenmeyer flask along with the filtrate collected. This flask was then put inside
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Whether or not schools and libraries should practice censorship has been up for debate for a while now. School boards remove books from libraries in schools‚ due to negative feedback. This topic tends to be controversial as different people have different viewpoints on what content should be exposed to minors. This paper will debate why schools and libraries should not practice censorship. Schools and libraries should not practice censorship because‚ some content is censored unjustly‚ such as the
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Censorship is a unique term. Some synonyms are suppress‚ eradicate‚ destroy. One term that the definition of censorship uses most is remove which means to “move or shift to another place or position” (Dictionary.com). Anyone can move objects such as books‚ utilities‚ etc.‚ people can carry with their own strength‚ to a place where they want to put it. Censor is quite different because it can be a group or one person “who examines books‚ movies‚ etc.‚ and removes things that are considered to be offensive
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fireman who keeps the fire at 451 degrees‚ the temperature at which paper burns. He finds a deep desire for stories after he meets a book-loving girl named Clarisse‚ and reads a few on poetry. When Montag realizes how precious they are‚ he meets a man named Faber who is willing to help him preserve the knowledge in books‚ even if that means getting burnt. In Ray Bradbury’s novel Fahrenheit 451‚ a major topic is the idea that censorship can brainwash and change people’s thoughts. Montag’s job as a fireman
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ACCOUNTING 505 SYNTHESIS |Key Features of a Synthesis | (1) It accurately reports information from the sources using different phrases and sentences; (2) It is organized in such a way that readers can immediately see where the information from the sources overlap;. (3) It makes sense of the sources and helps the reader understand them in greater depth. |The Background
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most influential books of the century” (Robinson‚ 2011‚ p. 23). The origin of dreams encompasses three areas‚ the psychological‚ the scientific and the theoretical depending on to whom you talk. But for this paper‚ a review of Freud’s concepts of dreams‚ an analysis of the Activation Synthesis Theory of dreams‚ and an inquiry into the Activation-Information-Mode (AIM) Model of dreams will define dream theories. Dreaming is an important aspect of a person’s psychological well-being‚ and Sigmund Freud
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children or young adults‚ and are they right to do so. This paper will identify the reasons why some books are banned over others and it twill give you a look into the different sides of this argument. Some of the books that will be discussed in this essay are; Of Mice and Men‚ The Adventures of Huckleberry Finn‚To Kill A Mockingjay‚ and The Catcher In The Rye. Hopefully this paper can give you more insight into the arguments over the censorship of books and the knowledge as to why these books were banned
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