Refractive index

Introduction In this weeks lab each group is assigned an unknown alcohol and an unknown carboxylic acid for testing. Each group then synthesizes an unknown ester from a Fisher Esterification reaction of the given unknown. Once an ester product is obtained, 1H and 13C NMR, boiling point, and smell testes are run on the final product in order to identify all the given unknowns. Procedures The first step of this week’s lab was to mix 3mL of the unknown alcohol and 6mL of the unknown carboxylic…

Coulter Counter Method. Schematic Diagram Diagram 1: The basic setup of coulter counter method. Test tube containing conducting fluid placed in the beaker containing same conducting fluid. Orifice in the test tube connect the circuit. Electrodes are placed in beaker and test tube and voltage is applied. Vacuum is applied in the test tube to allow fluid movement from beaker to test tube. Counting circuit will calculate the amount of particle and pulse height analyser will measure the particle…

UV-curable resins used in ceramic µSL are investigated through the developed numerical model. Light scattering is found to essentially influence the µSL of ceramics. It is found that the scattering is the strongest scattering occurs at a high refractive index contrast between the particle and the resin. High laser intensity is required to fabricate high UV absorption ceramic materials to compensate for the laser energy absorbed by the ceramic particles. µSL of three commercially available…

The unique composition and purity of as-deposited SnS2 thin films prepared with different precursor solution volumes from 5 ml to 25ml were determined by EDX analysis as shown in fig 5, which brought out the presence of Tin and Sulfur as elementary components. Two different peaks were observed in the spectrums from fig 5 relevant to the tin and sulfur. The EDX spectra show that the weight percentage for the film prepared at the precursor solution volume of 5 ml is 36.8% and 63.2%, which is…

The Effects of Technology on Biomedicine Dontae Weatherly CRN: Submitted [date and time] The Effects of Technology on Biomedicine INTRODUCTION Biomedicine is a branch of medical sciences that ties biology and clinical practice together. Biomedicine or medical biology is a major facet of modern health care and lab diagnostics. Biomedicine and biotechnology go hand in hand, with that being said, technology has a great impact on the advancement of biomedicine.…

here first and second term in the equation (3) represents coulomb potential whereas last term is exchange-correlation potential. The exchange and correlation effects were taken in to account by using PBE-sol exchange correlation technique for treatment of electronic interactions in ZnGa2S4 and CdGa2S4 crystal compounds. The aim behind adoption of PBE-sol exchange correlation technique is that it recoups the prime gradient expansion for exchange and jallium surface potential are exactly…

Solubility Index Mixer Solubility Index of Powder 11. Electronic Weighing Balance For Weighing Purpose 12. Gerber Centrifuge For Determination of Fat 13. Muffle Furnaces For Ash 14. Spectronic 20 For colour determination 15. Oxygene analyzer For determination of Oxygen content in packages 16. Bulk Density Apparatus For determining Bulk density 17. Electric Hot Plate For heating purpose 18. Remi centrifuge For determination of insolubility index 19. Refractometer For determination of Refractive…

DM and GalA content were determined according to the method reported by Aina et al., [32] and Food Chemical Codex 1996 [33]. 0.1g of pectin was weighed into a 250 mL conical flask, then wetted with 5mL ethanol. 100mLof deionized water was added, then six drops of phenolphthalein (0.1% in ethanol) indicator to each sample. Pectin dispersions were stirred until it was fully dissolved, thereafter, the solution was titrated slowly with 0.1N NaOH until the colour of the indicator just changed to…

The healthcare profession is a technologically based career. Companies are constantly introducing new technologies to healthcare professionals such as doctors and physicians. One recently developed device introduced to the healthcare industry is holographic technology. These images serve a valuable role to analyze various parts of the human anatomy such as human hearts. Holographic images have a complex makeup, are proven to be beneficial for medical professionals, and serve a significant role…

Paper Chromatography Paper Chromatography is an analytical method that is used to separate coloured chemicals substances, especially pigments. This is how paper chromatography is conducted: Materials Chromatography Paper (Can also be Coffee Filter) Large Beaker (max one litre) Paper Clips/Sellotape & Skewer Stick Water soluble black marker Water Procedure: Draw a ink dot with the marker on each one of the chromatography paper near the bottom end of the paper. Then stick or paper clip the…