Post Lab #4- Column Chromatography Organic Chem 3418-2 March 3‚ 2011 Theoretical Background- The fluorene and fluorenone mixture was separated by first dissolving the mixture in heptane. Since “like dissolves like”‚ fluorene dissolves with the non-polar heptane and the polar fluorenone dissolves in the polar ethyl acetate solvent. This phenomenon was illustrated in class before the experiment‚ when it was pointed out why water will not dissolve fluorene‚ fluorenone‚ or transstilbene
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has frequently been used as propaganda‚ promoting the interests of the elite in a controlled manner over their subjects. The images presented‚ the Stele of Hammurabi and the Column of Trajan‚ are monumental examples of such propaganda. The Stele of Hammurabi is over 7 feet tall and was displayed in a public space. Trajan’s column was 38 meters high and displayed publically. It was important for propaganda to be seen by as many people as possible to be successful. More than just eye-catching‚ the monuments
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Column-Level Security with Information Design Tool: Using Business Security Profiles to Secure Objects and Customize the Reporting Experience One of the new universe security features in Information Design Tool (IDT) is the Business Security Profile‚ which allows universe designers to assign column-level security on objects and apply profiles directly to users and groups. Business Security Profiles provide advanced and flexible object security‚ which is an overall improvement compared to the all-or-nothing
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color TLC plate. In a column chromatography‚ cotton and sand is placed in purpose of holding silica gel and prevent leakage of adsorbent particles. Dry loading is then applied to the column to eliminate applying the polar solvent as well as to allow separation to have enough time and space in process of dissolving and loading. At the beginning of the chromatography‚ petroleum ether‚ 8%tBME/petroleum ether‚ and pure tBME are used respectively. As the solvent pass down the column‚ differential interaction
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COLUMN AND THIN LAYER CHROMATOGRAPHY Group 9 RAMOS‚ Sharina Joy; REYES Aina Marie; REYES Jallisa Maan; RUBIO‚ John Michael; SABINO Patricia Anne; SANTOS‚ Carlos Rafael ABSTRACT To separate the colored components of siling labuyo and to determine the purity of the components‚ the students performed a column and thin or solid-liquid chromatography procedure. The solid may be almost any material that does not dissolve in liquid phase. But for this experiment‚ the solid used by the students was
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CVEN9802 Structural Stability Beam Columns Chongmin Song University of New South Wales Page 1 CVEN 9802 Stability Outline • Effective Length Concept • Beam-Column with Distributed Load • Column with Imperfection • Southwell Plot • Column Design Formula Page 2 CVEN 9802 Stability Fundamental cases of buckling PE EI 2 L 2 2 2.045 EI P 4 EI Pcr cr 2 L2 L 2 Pcr 2 EI 4L 2 PE 2 EI L2 Page 3 CVEN 9802 Stability What is
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COMMERCIAL LOAN ANALYSIS‚ STRUCTURING AND MANAGEMENT COURSE FINANCIALS OF STAR OIL LTD |PROFITABILITY |2006 |2005 | |GROSS MARGIN | | | | |
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Modern Family: Stereotype Central Modern Family is a show full of different stereotypes. The first or "pilot" episode of Modern Family showed a lot of strong evidence towards the show challenging dominant ideology. By representing the stereotype of the gay marriage between Cameron and Mitchell‚ this show successfully challenges the dominant ideology of a straight marriage‚ in which the child has both a mother and a father‚ and not just two fathers. When the audience sees this‚ they now see that
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Christiansen English 9 20 February 2014 Dear Sean‚ My love is doomed because I love a member of a family who my family doesn’t get along with. The families have been feuding for as long as I know. Since the families and crazed with anger towards each other‚ serious consequences could happen. Which brings me to my next point. If one of the families finds out‚ there could be serious consequences for either of us. I don’t know who would be more mad‚ the leader of our family or the leader of my
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------------------------------------------------------------------------------ 1. Preliminary Remarks Confinement of columns by means of FRP jackets is done by retraining the dilation of concrete by wrapping the fibers in the hoop direction of concrete columns. Confinement of columns by FRP wraps is termed as a passive strengthening technique since the fibers do not play any role in the elastic response of the axially loaded column. The tendency of concrete to dilate after cracking and the radial stiffness of the confining
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