The objective of the present work was to formulate‚ characterize and optimize the preparations of hybrid nanoparticles containing dapsone which is finally converted into gel for topical drug delivery. The formulations were characterized for particle size‚ zeta potential and entrapment efficiency and were optimized by applying factorial design of experiment (23). The results showed that the optimal formulation (HN 4) of dapsone loaded hybrid nanoparticles had average particle size of 277nm‚ zeta potential
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1. What physical evidence did you find at the victim’s home? I found a wallet‚ possible flammable liquid‚ beer bottles. 2. Describe the process that you used to take a sample of the puddle-shaped burn pattern on the floor. Why did you also take samples from the portion of the floor that was not burned? I scraped up the material from the puddle-shaped burn‚ and then used tweezers to store it. I took samples from the portion of the floor that wasn’t burned to compare it to the puddle-shaped burn
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What physical evidence did you find at the victim’s home? Matches Space heater Bear bottles The girlfriends wallet Describe the process that you used to take a sample of the puddle-shaped burn pattern on the floor. Why did you also take samples from the portion of the floor that was not burned? To take a sample of the burned floor we scraped the burnt wood will we got loose pieces of it. We did the same to take a sample of the wood that had not been burned. We took a sample of the burned
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Unit 2 Home Labs Goals: • Read Safety • Perform Changes: Physical or Chemical Lab • Perform Special Physical Properties of Matter Lab • Perform Paper Chromatography Lab Turn-in: 1) Changes: Physical or Chemical Lab - Completed Procedure / Observations‚ questions‚ and a written description of most important concept that you learned in the discussion section. 2) Special Physical Properties of Matter Lab – Completed Procedure / Observations‚ questions‚ and
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AP Lab #5 Plant Pigments/Photosynthesis I. Identifying the Effects of Different Variables of Light and Carbon Dioxide on the Rate of Photosynthesis and Observing the Separation of Pigments Through Chromatography II. Introduction Plants have a variety of pigments‚ all of which absorb a different color of light. The three main pigments are chlorophyll a‚ chlorophyll b and carotenoids. Chlorophyll a is the primary plant pigment that absorbs red and blue light‚ which ultimately appears green to the human eye
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Benzonitrile Oxide with‚ cis-stilbene‚ trans-stilbene‚ or styrene in an Erlenmyer flask. With this Reaction solution thin layer chromatography will be performed using each reaction solution. The different reactions will then be compared by running co-spot TLC’s. An NMR of the crude products from each reaction will be taken. 3. References: * Chemistry 173Q Organic Chemistry Lab: Laboratory Manual Notes * Mohrig‚ Jerry R.‚ Christina Noring Hammond‚ and Paul F. Schatz. Techniques in Organic Chemistry
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Identification of Plant Pigments by Paper Chromatography Biology 1107L Introduction All living organisms require energy for their chemical processes. The ultimate source of this energy is the sun. Plants convert light energy into the chemical energy of sugars. During photosynthesis pigments are used to capture light energy. Pigments of green plants can easily be separated and identified using a technique called paper chromatography. The purpose of this experiment is to separate
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extracted by using column chromography and alumina was used as the solvent. Solvents of different polarities were used‚ starting with the least polar‚ to extract the certain components from the leaves. They were then analyzed by using thin- layer chromatography. Procedure: The first part of the experiment dealt with breaking down the spinach leaves in a mortar and pestle. Acetone was added to this to help with the breakdown of the spinach leaves. Once the spinach leaves were broke down enough that
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Krotec; Honors Bio Period 4 Photosynthesis Lab Report I. Introduction The photosynthesis lab is designed to quantify photosynthesis‚ enabling a number of variables to be tested for their effects on photosynthetic rate. The production of oxygen‚ is used as an indirect measure of photosynthetic activity.The lab allows the examination of the effects of different wavelengths of light on photosynthetic activity. The other aspect of the lab includes Paper chromatography‚ which is a useful technique for separating and identifying pigments and
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blue and red wavelengths have more absorbance‚ the green doesn’t have a high absorbance. This lab is useful to help demonstrate the existence of various leaf pigments by using the process of paper chromatography.
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