inside you, find out who am I to be in the position to make me feel so damn unpretty, I'll make you feel unpretty too" (TLC Unpretty). This Chorus is that of a popular song performed by one of the most popular and influential Girl groups of all time, TLC. The packs a powerful message that TLC is trying to get across to their fans and listeners. The popular girl group trio, TLC that reigned in the 90's, during the beginning of the feminist/ Girl power movement. The group members were Tionne Watkins
The company was started by Alicia Gans. Alicia with six years of experience started The Cherry Lady LLC. The Cherry Lady (TLC) was started in October 2004 to commercially produce her distinctive chocolate. TLC had been a cottage operation, specializing in producing premium quality, hand-made chocolate confections. TLC has grown exponentially over the years. They would be requiring over 100 pounds, until recently receiving 5,000 and 10,000 pound orders. This company became a preferred vendor of Epicurean
Everyone knows we can always pay someone wash our car, but why would we pay TLC to wash it, when you can do the same job or better at home. It saves you money and a good source of exercise. It’s not hard if you have the right supplies. To properly wash a car, you will need: a bucket, water/water hose, wash cloth for tires, wool mitt, and car wash such as, Rain-X. Dish detergent would be too harsh to use, that’s why it best to use a car wash. Once the supplies are gathered, you should be ready to
three different liners - Theracal LC (TLC) a novel resin modified calcium silicate cement, Biodentine (BD) and resin modified glass ionomer cement(RMGIC) using an universal silane containing adhesive and characterizing their failure modes. Methods and Material: Thirty extracted intact human molars with occlusal cavity (6-mm diameter and 2-mm height) were mounted in acrylic blocks and divided into three groups of 10 samples each based on the liner used as Group A (TLC) Group B (BD) and Group C (RMGIC)
substance that has different levels of attraction to the mixture. The stationary phase in this lab was the silica gel on the TLC plate. The movie phase is the solvent to carry
reaction occurs. A TLC plate is used to see if all the benzyl in the solution has reacted to form
in a 10mL round bottom flask. The reactions were stirred with a magnetic stir bar and allowed to react at room temperature for 1 hour. After 1 hour, thin layer chromatography (TLC) was conducted to determine if the reaction was complete and predict which ketone and aldehyde combination yielded a desired product. The TLC was conducted by diluting the reactants and products in Hexanes and using a mobile phase of 10% ethyl acetate. The most successful reaction was then selected to be scaled up.
varying molecular polarities. The intrinsic properties of the components of the ink allows for the separation of ink through adsorption chromatography, where the ink is separated based on the attraction to a moving phase (liquid) and stationary phase (TLC plate). Using the Rf equation, the Rf value can be determine to numerically determine the similarity in the inks "R" _"f" "=" "distance from the origin to the center of the spot" /"distance form the origin to the solvent front" (Eq. 1) For the
density < 1, the organic phase will be on the top in the separatory funnel, while solvents denser than water, density > 1, will sink to the bottom of the funnel (2). The success of the separatory funnel technique allowed for Thin Layer Chromatography (TLC) and Infrared Spectroscopy (IR) analysis. A Digi-Melt apparatus was used to measure the melting points of the benzoic acid and benzocaine samples which were extracted using the separatory funnel. Based on the observed melting point ranges for each sample
experiment is to measure the vital capacity (VC) and total lung capacity (TLC) of people of different gender. The main methods used in this investigation can be divided into two parts, namely investigation on VC and investigation on TLC. The main method used for investigation of VC is by exhaling the maximum volume of air inhaled into the spirometer. The reading from the spirometer is then recorded. The main method for TLC is by inhaling the maximum volume of air, followed by normal exhalation
coefficient is not constant, in contrast to partition coefficient (liquid/liquid chromatography). Hence, if the concentration of sample is more than the absorptive capacity of stationary phase, the separation of components of the mixture will be poor. TLC is a useful tool for separating and identifying
Reginald Francis Lewis was born in (East) Baltimore, Maryland on December 7, 1942. During the 1940’s and 1950’s, black people weren’t allowed to shop at many of the stores and they had designated restaurants and movie theaters they were able to attend. At the age of 6, Reginald decided things would be different for him and stated "why should white guys have all the fun?" Lewis graduated from Virginia State University with a degree in Economics and later graduated from Harvard Law School with his
Name: Megan Coghlan Lab Section: S343, Wednesday, 12:15 PM Date: September 17, 2015 Purification of Biphenyl Results Methanol, acetone, dichloromethane, toluene, and hexanes were tested for their miscibility with water. Methanol and acetone were found to be miscible with water, and dichloromethane, toluene, and hexanes were immiscible. Two layers—one organic and one aqueous—were observed each time an immiscible solvent was combined with water. Dichloromethane was observed as the bottom layer, and
The Transition Learning Center (TLC) is a four day per week program for students with disabilities who are 18 to 21 years of age. The goal of the program is to assist Special Education students in their transition from school to the community and the working world. The TLC teacher, career specialist, and three paraeducators work with students to achieve their Individualized Education Plan (IEP) driven goals. Students spend the beginning and end of their day at the TLC which is housed in a portable
prepared TLC plate that had 1 cm lines from the top and bottom as well as 5 lanes marked, using a capillary action tube. A TLC chamber was prepared using about 10 mL 97% DMC/3% methanol solution, filter paper, and a watch glass. The DCM/methanol solution was poured into a 250 mL beaker, the filter paper placed on the side, and the watch glass placed upside down over the top. Then, when the filter paper was completely saturated with the solvent, the TLC plate was inserted vertically into the TLC chamber
and heat reflux was used to prevent reagents from escaping. Then the solid product was vacuum filtered. The product was recrystallized to purify it and the unknown filtrate and nucleophile was determined by taking the melting points and performing TLC. Nucleophilic substitution reactions have a nucleophile (electron pair donor) and an sp3 electrophile (electron pair acceptor) with an attached leaving group. This experiment was a Williamson ether synthesis usually SN2, with an alkoxide and an alkyl
mixtures because its dielectric constant is 3.832. This relatively high value for the dielectric constant gives a strong effect towards moving the compounds up the TLC plate. The way that I visualized the spots on the TLC plate is first I placed the plate under a UV light. This showed most but not all the spots. The next way was to dip the TLC plate into bromocresol green. The best mixture was mixture 5 at separating the compounds due to the greatest dielectric constant. The worst mixture being the first
so that the mostly-dry solution could be used in thin layer chromatography (TLC). One of the best methods of separation of components
click to me or even mean anything to me, they were just words. Now understand what those words meant to the TLC made it connect to me, much more than it did at the beginning of the semester. I’m very grateful and honored to be able to be a part of this amazing experience you call a TLC. The day it came to schedule my first semester for the college during my orientation, I was told about the TLC option. I was intrigued by the descriptions that was given
performing a simple separation known as thin layer chromatography (TLC), the extract can be verified to see if it contains eugenol. TLC uses ethyl acetate (a polar solvent) in order to dissolve the molecules (also polar) in the extract. The polar solvent also contains hexane (a non-polar solvent) which allows for the polar molecules to precipitate out as small spots on the TLC plate. As shown in Figure 4, the solvent will move up the TLC plate until it reaches the spotted samples: cloves extract (Our)