experiment‚ 4-(4-chlorophenyl)-3‚4-dihydropyrimidine-2-one is synthesized in a solvent-free reaction‚ where urea‚ ethyl acetoacetate‚ 4-chlorobenzaldehyde are used as the reactants and p-toluenesulfonic acid is used as the catalyst. This reaction is similar to the original synthesis of DHPM by Pietro Bignelli‚ as it incorporates a single step. Due to its environmentally friendly conditions‚ such as the use of solar energy as a heat source and the lack of solvent‚ this synthesis of 4-(4-chlorophenyl)-3
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the safety of its oral use against normal microflora‚ is still ambiguous despite traditional practice hence‚ this study. The disc diffusion method was used to determine the antibacterial activity against gram positive and gram negative bacteria (standard strains and clinical isolates). Antibacterial activity was tested on E. coli‚ S. aureus‚ B. subtilis and P. aeruginosa. Results show that there was no formation of any zone of inhibition as observed after 24 hrs. Thus‚ this justifies the traditional
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long-term and short-term health problems. The positioning of your chair‚ desk‚ keyboard‚ mouse‚ and monitor can all make a difference. Learn how to spot problems and to position your computer equipment for maximum efficiency and minimal strain. This activity contains 14 questions. 1. Which of the following is NOT a healthy computing habit? a. The top of the monitor is 2-3 inches below eye level. b. The seat should not cause pressure at the back of your knees. c. The mouse should be at about the same
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Formative Assessment Activities In this week‚ the students are to analyze The Shoe Store Incident and discuss the legal and ethical issues arise in the case. The case of The Shoe Store presented explains that “the store’s best customer‚ Imelda‚ walked in and asked Bob if an employee could help her get the proper fitting for her shoes. Bob explained that Tom‚ a sales employee‚ would be happy to help her. Imelda‚ however‚ said she would prefer to work with a female employee‚ and that if a female employee
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------------------------------------------------- Chapter 9 Turning Point Activity; Chapter 9 marks a turning point in the novel. Up to now‚ Tom’s adventures have been play and make-believe. In the scene at the graveyard‚ he and Huck witness real evil. Tom is forced to make life or death decisions. Analyze this chapter‚ addressing such questions as the following: How does Twain create the frightening atmosphere in the graveyard? To what senses does he appeal? How does he use foreshadowing – clues
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Population Dynamics Lab Population Dynamics Lab Report As you complete each slide of the Population Dynamics Virtual Lab Activity‚ please fill in this lab report with the appropriate information and data. Purpose: Analyze graphs to determine the population size of two marine species. Explain how predation‚ birth‚ and death rates impact marine populations. Describe how biotic and abiotic factors influence marine populations. Research: Prey Initial Size: The starting number of prey. (Assume that the
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The Activity and Art of Reading Kayann Barrett Keiser University “You can bring a donkey to the water but you can’t let him drink.” This is a Jamaican proverb that I remember hearing my grandmother say over the years. I asked her what she meant and she said‚ “I can give you all the tools for success‚ but if don’t want to be successful then it’s on you.” According to Adler and Van Doren‚ “A teacher may help his student in many ways; it is the student himself who must do the learning” (Kransy and
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Scholarly Activity 1 - Unit II Jonathan C. Isaacs Columbia Southern University International Business MBA 6601 Dr. Ike Udechukwu September 24‚ 2012 Scholarly Activity 1 - Unit II PepsiCo is global leader in convenient snacks‚ foods‚ and beverages‚ with revenues over $60 billion dollars and 285‚000 employees across its organization. PepsiCo operates and conducts business around the globe‚ from Europe‚ Asia‚ Africa‚ and the Middle East but is headquartered in Purchase‚ New York. PepsiCo
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I. DISCUSSION: Differences between organic and inorganic compounds based on structure‚ type of bond and some common physical and chemical properties. II. PROCEDURE: A. SOLUBILITY 1. To 2 mL. each of the following solvents: water‚ ethyl alcohol and ether‚ add a pinch of benzoic acid and shake.
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Human Digestion Activity The digestive process involves the mixing of food‚ the movement of food through the digestive tract‚ and a chemical breakdown of large molecules of food into smaller molecules. The digestive system is made up of the digestive tract and other organs that aid in digestion. The digestive tract is a series of hollow organs joined in a long‚ twisting tube from the mouth to the anus. Those twisted tubes include the mouth‚ esophagus‚ stomach‚ small and
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