...10/07/2013 Experiment 5: Wittig Reaction Purpose The purpose of this experiment is to synthesize trans-9-(2-phenylethenyl) anthracene using a wittig reagent formed by reacting phosphonium chloride with base. Experimental In a reaction tube, (0.200g) benzyltriphenyl phosphonium chloride, (0.115g) anthraaldehyde, and (.6ml) dichloromethane (DCM) is mixed together with a stir bar. We stirred the mixture rapidly and added (0.26ml) of a 50% NaOH solution dropwise. The mixture was stirred for 20-30 minutes. We added (1.5ml) DCM and (1.5ml) water, and the tube was shaken until the layers separated. The water layer was removed. This step was repeated and the water was removed again. CaCl2 pellets were added to DCM solution until it longer clumped. The solution was filtered to separted the CaCl2 pellets from DCM. DCM was used to wash pellets before filtering. To the solid in bottom of flask, (3ml) of propanol was added, heated and cooled. Filteration was tried once more to gain crystals. Due to nonexistent crystals a melting point could not be performed. Observations: We noticed after adding propanol our solution became very orange and cloudy. After heating it the solution was a clear golden color. We chilled the solution in ice and attained no crystals. After repeatedly heating and cooling, we saw our solution go from cloudy to clear over and over. After filtering one more time the color of orange stained the filter paper...
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...FOREWORD At no time during the last three or four decades have the communication skills of individuals in the business world come under closer scrutiny than today. And never before have those who work in the business world needed better, more effective communication skills. The emerging technology appears to be increasing, rather than decreasing, the need for effective communication skills. As more individuals have ready access to desk-top equipment to process written communication, fewer support personnel will be readily available to provide editing assistance. Therefore, welldeveloped communication skills among originators are more important to success than ever before. This book is suitable for several different audiences, including undergraduate and graduate students. The organization of this manual is a logic sequence of chapters including both business communication and correspondence. The first part is dedicated to business communication and the second to business correspondence. The special features found in this edition are: 1. Examples of effective letter writing. Studies have shown students studying written business communication can learn as much, if not more, from ineffective examples of written communication as they do from effective examples. 2. Varied application problems in the writing-oriented chapters. The number of problems has been increased. While the majority of problems require the writing of a letter or report, some are designed...
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...GROUP INTERACTION JOURNAL ARTICLES Compiled by Lawrence R. Frey University of Colorado at Boulder Aamodt, M. G., & Kimbrough, W. W. (1982). Effects of group heterogeneity on quality of task solutions. Psychological Review, 50, 171-174. Abbey, D. S. (1982). Conflict in unstructured groups: An explanation from control-theory. Psychological Reports, 51, 177-178. Abele, A. E. (2003). The dynamics of masculine-agentic and feminine-communal traits: Findings from a prospective study. Journal of Personality and Social Psychology, 85, 768-776. Abele, A., Gendolla, G. H. E., & Petzold, P. (1998). Positive mood and in-group—out-group differentiation in a minimal group setting. Personality and Social Psychology Bulletin, 24, 1343-1357. Aberson, C. L., Healy, M., & Romero, V. (2000). Ingroup bias and self-esteem: A meta-analysis. Personality and Social Psychology Review, 4, 157-173. Abougendia, M., Joyce, A. S., Piper, W. E., & Ogrodniczuk, J. S. (2004). Alliance as a mediator of expectancy effects in short-term group psychotherapy. Group Dynamics: Theory, Research, and Practice, 8, 3-12. Abraham, A. (1973a). Group tensions as measured by configurations of different self and transself aspects. Group Process, 5, 71-89. Abraham, A. (1973b). A model for exploring intra and interindividual processes in groups. International Journal of Group Psychotherapy, 23, 3-22. Abraham, A. (1974-1975). Processes in groups. Bulletin de Psychogie, 28, 746-758. Abraham, A., Geffroy, Y., & Ancelin-Schutzenberger...
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...C h a p t e r 1 Prewriting GETTING STARTED (OR SOUP-CAN LABELS CAN BE FASCINATING) For many writers, getting started is the hardest part. You may have noticed that when it is time to begin a writing assignment, you suddenly develop an enormous desire to straighten your books, water your plants, or sharpen your pencils for the fifth time. If this situation sounds familiar, you may find it reassuring to know that many professionals undergo these same strange compulsions before they begin writing. Jean Kerr, author of Please Don’t Eat the Daisies, admits that she often finds herself in the kitchen reading soup-can labels—or anything—in order to prolong the moments before taking pen in hand. John C. Calhoun, vice president under Andrew Jackson, insisted he had to plow his fields before he could write, and Joseph Conrad, author of Lord Jim and other novels, is said to have cried on occasion from the sheer dread of sitting down to compose his stories. To spare you as much hand-wringing as possible, this chapter presents some practical suggestions on how to begin writing your short essay. Although all writers must find the methods that work best for them, you may find some of the following ideas helpful. But no matter how you actually begin putting words on paper, it is absolutely essential to maintain two basic ideas concerning your writing task. Before you write a single sentence, you should always remind yourself that 1. You have some valuable ideas to tell your reader,...
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...POSTPARTUM DEPRESSION: LITERATURE REVIEW OF RISK FACTORS AND INTERVENTIONS Donna E. Stewart, MD, FRCPC E. Robertson, M.Phil, PhD Cindy-Lee Dennis, RN, PhD Sherry L. Grace, MA, PhD Tamara Wallington, MA, MD, FRCPC ©University Health Network Women’s Health Program 2003 Prepared for: Toronto Public Health October 2003 Women’s Health Program Financial assistance by Health Canada Toronto Public Health Advisory Committee: Jan Fordham, Manager, Planning & Policy – Family Health Juanita Hogg-Devine, Family Health Manager Tobie Mathew, Health Promotion Consultant – Early Child Development Project Karen Wade, Clinical Nurse Specialist, Planning & Policy – Family Health Mary Lou Walker, Family Health Manager Karen Whitworth, Mental Health Manager Copyright: Copyright of this document is owned by University Health Network Women’s Health Program. The document has been reproduced for purposes of disseminating information to health and social service providers, as well as for teaching purposes. Citation: The following citation should be used when referring to the entire document. Specific chapter citations are noted at the beginning of each chapter. Stewart, D.E., Robertson, E., Dennis, C-L., Grace, S.L., & Wallington, T. (2003). Postpartum depression: Literature review of risk factors and interventions. POSTPARTUM DEPRESSION: LITERATURE REVIEW OF RISK FACTORS AND INTERVENTIONS Table of Contents EXECUTIVE SUMMARY 2 OVERALL METHODOLOGICAL FRAMEWORK 5 CHAPTER 1: RISK FACTORS FOR...
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