CHEM3412 Synthesis of a Porphyrin Porphyrins are hetereonuclear‚ macrocyclic compounds that play an important role in living organisms. Examples include the non-protein heme portion of hemoglobin in animals whereby the lone pairs on nitrogen can bind to the oxygen-carrying iron. In plants‚ chlorophyll uses the vast conjugation to allow absorption of light for photosynthesis. The characteristic colors of porphyrins is also due to the conjugation. An examination of the porphyrin structure
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The Saga of :-) One colon‚ one hyphen and one parenthesis——by pressing these three keys on his keyboard‚ the computer scientist Scott E. Fahlman made the first sideway smiling face in human history‚ dubbed “emoticon”. Nowadays‚ six billion of them flooding the Internet on a daily basis‚ along with their slicker younger sisters‚ emojis. While demonstrating a rampant and iridescent interplay of symbols‚ images‚ and the complexity of human language‚ these burgeoning modern “hieroglyphics” are bringing
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Name: Lindsey Weber Exercise 2: Skeletal Muscle Physiology: Activity 5: Fatigue in Isolated Skeletal Muscle Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. When skeletal muscle twitches fuse so that the peaks and valleys of each twitch become indistinguishable from each other‚ the muscle is in a state known as You correctly answered: d. complete (fused) tetanus. 2. When the stimulus frequency reaches a value beyond which no further increase of
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Najla Alameldin Professor Wheat English 106 03-21-2011 A Cultural Criticism on Diane DiPrima’s “The Practice of Magical Evocation” As a young girl growing up in an Italian American family‚ DiPrima began to witness expectations that she did not like about her culture. At eight years old she experienced her first expectation as a female in her family but this was not an expectation she felt positively on. In an interview given by David Hadbawnik‚ DiPrima says that one day her mother was very
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what true imitation looks like for him is not one which leads to glorification of social order‚ but the opposite. It is this opposite‚ counter-cultural view of the cross that Paul has been articulating in all of chapter 4‚ and in 1 Corinthians 1-4 entirely. As problematic as 4:14-21 can seem‚ when this pericope is kept in view of the chapter as a whole a different interpretation Paul’s aim emerges. Still‚ Paul’s command to “imitate me” can seem vague; Paul’s lack of explicit reference to Jesus’
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engineering problems 1. Stoichiometry • It deals with numerical relationships between reactants and products in chemical reactions. • Stoichiometric analysis can be used to determine the product yield for a given amount of reactant converted. Example of Stochiometric Analysis • Neutralization of hydrochloric acid with lime 2HCl + Ca(OH)2 CaCl2 + 2H2O • Oxidation of acetic acid to carbon dioxide and water. CH3COOH + 2O2 2CO2 + 2H2O Engr. Yvonne Ligaya F. Musico 5 Example of Stochiometric
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Jonathan Riley Kellie Riddell 4/28/14 Communications Unit 4 Assignment 1: Power and Communication Language discrimination has been prevalent in society for thousands of years. This has been something that happens in every civilization and will not stop now. Language discrimination is unfair treatment of an individual by the way that they compose themselves in a verbal matter. What I mean by this is to treat someone unjust because of factors such as accents‚ vocabulary size‚ or just that they speak
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Jenebou Sylla November 30‚ 2014 APUSH Ms.Shaugnessey After the colonies of America advanced and the nation changed‚ some political changes were made as well. Political parties were put in place‚ one was the Federalists and the other was the Jeffersonian Republicans. The parties were used in the presidency of Madison and Jefferson in 1801 to
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DQ 1:Do you think that all six dimensions of health are equally important? Why or why not? As far as I’m concerned‚ ’health’ refers to the choices that we make each day that affect our bodies and minds. Our health changes according to everything that we do. This includes things like the food we eat‚ the people we spend time with‚ and the intellectual stimulation we give our minds. The effect that these have on our bodies are all included in the idea of ’health. ’’Wellness’ sounds
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Tesco’s Structure Tesco has a hierarchical structure because the company has a lot of layers of management and control. The majority of Tesco’s layers are controlled by one employee who monitors the work of every one on that level. In hierarchy structures like Tesco’s instruction are usually passed down from one person to another until it reaches the bottom of the hierarchical structure. On the other hand if there is a problem in the structure it is usually moved up the structure from person to
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