Results and Discussion 2.5.1. Morphological characterization of hollow fiber capillaries from FESEM images The longitudinal view of the hollow fiber is presented in Fig.3 (a). The outer surface was further magnified to look into the pore details in 5KX and 25 KX magnification‚ are shown in Fig.3 (b) and (c).The image of the hollow surface revealing the cut surface showing the inner layer of the hollow fiber are shown in Fig.3 (d). The fine structures of the fibers ‚ shown in Fig.3 (e) and (f) resembles
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6. FIRST DERIVATIVE ZERO CROSSING METHOD 6.1. ABSTRACT: Simple‚ specific‚ accurate and precise 1st order derivative zero-crossing spectroscopic method was developed for simultaneous determination of PHENYLEPHRINE and EBASTINE from their binary mixture. In this 1st derivative zero-crossing spectroscopic method the amplitudes of the 1st order derivative of the spectra of the binary mixture containing PHE and EBS were measured at 252.2 nm (zero crossing of EBS) for determination of PHE and at 274.8
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. Yes‚ comparably to TLC plate 2 and 3. The benzophenone is more neutral but as the same time its nonpolar‚ being that Silica gel in TLC 2 was polar and the solvent ethyl acetate-hexane is non-polar it moved relatively with the solvent. The stationary phase in TLC 3‚ alumina is non polar and the solvent ethyl acetate is polar so from the ideal that polar does not attract non-polar benzophenone stick stronger to alumina non-polar rather than moving up with polar solvent ethyl acetate as it did in
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Name: __________________________ Date: _____________ 1.|Complete the table and use the result to estimate the limit. x|||||||f(x)|||||||| A)|–0.076923| B)|0.423077| C)|0.298077| D)|0.548077| E)|–0.451923| 2.|Determine the following limit. (Hint: Use the graph of the function.)| A)|6| B)|5| C)|1| D)|4| E)|does not exist| 3.|A graph of is shown and a c-value is given. For this problem‚ use the graph to find .| A)|0| B)|–10| C)|–5| D)|15| E)|does not exist| 4.|Use
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Chromatographic conditions Shimadzu VP-ODS column is (250 mm x 4.6 mm i.d.‚ 5 µm particle size)‚ Shimadzu‚ Kyoto‚ Japan. The mobile phase consisted of a mixture of 0.3% TEA‚ 10% n-propanol in a solution of 0.1 M SDS adjusted to pH 2.8 using 0.02 M orthophosphoric acid. It was pumped at a flow rate of 1 mL min-1. The column was kept at ambient temperature and the wavelength of the detector was at 225 nm. Standard solutions Stock solutions of LVD‚ CBD and ETC containing to 1.0 mg mL-1 were prepared
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sugary coating. The coating preventing the candy from melting in the hot sun. In 1940‚ he made his first‚ independent move into the candy business in the United States. Somewhere in his travels‚ Mars had come across a candy that was essentially tiny chocolate pellets surrounded by a sugar shell. He may have seen soldiers eating them during the Spanish civil war; no one seems to know for sure. What is known is that in 1940‚ Mars concocted his own version of candy-coated chocolate drops
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Analysis of Ethanol in Moonshine | Using the GC-MS | Jennifer Greene | ------------------------------------------------- 4 May 2012 ------------------------------------------------- 4 May 2012 Introduction: In this experiment gas chromatography is applied to separate the water-ethanol mixture. This method is often used in the determination of alcohol in blood or urine. One obvious application is when law enforcement agencies need to determine whether or not someone is inebriated. In
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Anionic Exchange Ion Chromatography to Detect the Anions Concentrations in the water Samples Narendra Boppana‚ Nasser Ali‚ Martin Chavez‚ Sear Introduction: Ion Exchange Chromatography is a process where the ionic exchange occurs in between the stationary phase and the sample in the mobile phase‚ by using this ionic exchange phenomenon it is easy to separate the compounds. Ionic exchange depends on the electrical properties
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Title: Liquid Chromatography Author: Gloria Contreras Lab Partner: Jose Montanez Instructor: Teresa Potter Date Work Performed: January 13‚ 2015 Date Submitted: January 20‚ 2015 Abstract: In this lab‚ liquid chromatography is used to separate the Red 40 and Blue 1 dyes inside of grape flavored Kool-Aid. It was determined that the 5% isopropanol will remove the Red 40 dye from the stationary phase. The 28% isopropanol will remove the Blue 1 dye from the stationary phase. The more
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unknown compound. In this experiment‚ chromatography and titration were performed to identify the unknown amino acid. Within experimental error‚ the results were consistent with the reference literature cited in this report. Experimental Thin Layer Chromatography The amino acid standards used in this experiment were Alanine‚ Glycine‚ Serine‚ and Histidine. These standards and the unknown were separated by performing a method of chromatography. Thin layer chromatography (TLC) was performed by using a mobile
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