MICRO-RAMAN ANALYSIS OF EARLY CHRISTIAN FRESCOES IN EGYPT Hussein H. Marey Mahmoud Laboratory of Mural Paintings Conservation‚ Department of Conservation‚ Faculty of Archaeology‚ Cairo University‚ P.O. 12613 Giza‚ Egypt‚ marai79@hotmail.com ABSTRACT The early Christian cemetery in Egypt is located at Kharga Oasis in the western desert. The cemetery consists of 263 mud-brick chapels dating back to the 4th century AD. In the present study‚ micro-Raman analysis was used to study micro samples from
Premium Ancient Egypt Egypt Egyptians
law with respect to bleach and blue dye‚ a series of graphic and algebraic manipulations were done on the data obtained in the kinetic trace experiment in order to determine the different components that made up the rate law. Using absorbance spectroscopy to monitor concentration over time‚ rate order of the dye was found to be 1st order through the integrated rate law and through the proportionality method; the order of the bleach was also determined to be 1st order. Using this information‚ the
Premium Rate equation Chemical kinetics Reaction rate
electromagnet. Since then‚ the splitting of energy levels proportional to an external magnetic field has been called the "Zeeman effect". The "Zeeman resonance effect" causes magnetic resonances which are classified under radio frequency spectroscopy (rf spectroscopy). In these resonances‚ the transitions between two branches of a single energy level split in an external magnetic field are measured in the megahertz and gigahertz range. In 1944‚ Jevgeni Konstantinovitch Savoiski discovered electron
Premium Nuclear magnetic resonance
the starting material. The structural property of the material was studied by X-ray diffraction (XRD). The functional groups present in the material were identified using Fourier Transform Infra-Red (FTIR) Spectroscopy. The thermal behaviour was analyzed by using TG-DSC studies. UV-Vis Spectroscopy and Photoluminescence studies were taken to analyze the optical nature of the material. 1. INTRODUCTION Dielectrics are insulating materials that exhibit the property of electrical polarization
Premium Chemistry Chemical reaction Temperature
Lithium Ion Battery safety and Efficiency Synthesis‚ Characterization and Applications Mentor: Dr. Teyeb Ould Ely Guide: Dr. Richa Krishna Dhritiman Chakraborty A1217413001 MSMT Nanotechnology IInd Year Semester 3 Characterization: Raman Spectroscopy From the above chart it is clear that the material synthesized was not LiPO4. The XRD done later confirms this. Characterization: X-Ray Diffraction Table3.1. Synthesis 1 Solvothermal Synthesis Method I Using EG Material Composition
Premium Chemistry Electron Atom
near 0 °C. Filter off phenylosotriazole‚ and wash with cold water until colorless. Press and drain it. Use 0.5 g crude for next step. Recrystallize the remainder from water (charcoal). Characterize the product using melting point analysis and IR spectroscopy. C. Synthesis of 4-Carboxy-2-phenyl-1‚2‚3-osotriazole In a 400 mL beaker on a steam bath‚ heat 0.5 g crude phenylosotriazole with 10 mL water. Add 1.8 g KMnO4 in 0.25 g portions with stirring. Addition takes 1.5 to 2 hours until no more
Premium Ethanol Water Distillation
The objective of this lab was to prepare n-butyl bromide or n-bromobutane‚ which is derived from an alcohol and an acid. In this case‚ n-butyl alcohol and sulfuric acid were the reagents. There were two methods of distillation that was involved in this experiment. The first was by reflux distillation‚ which is used to speed up a chemical reaction without having the reactants/ products evaporate or explode. Data Table 1 indicates the amount of each reagents that was prepared for the reflux apparatus
Premium Acetic acid Ethanol Water
Science road map‚ (2000). Retrieved From: origins@stsci.edu http://origins.jpl.nasa.gov/library/scienceplan/science01.html Kroswell‚ K.‚ (2012). H-R Diagram. Retrieved‚ from: http://stardate.org/radio/program/h-r-diagram Kulesa‚ C.‚ (1997). What is Spectroscopy?‚ from: http://loke.as.arizona.edu/~ckulesa/camp/spectroscopy_intro.html Villanueva‚ J. C. (2010). Life Cycle of the Sun. Retrieved‚ from http://www.universetoday.com/56522/life-cycle-of-the-sun/
Premium Star Sun White dwarf
Hurley Abstract Preparation of nitrito-kO-complex was prepared by ligand substitution from a chloridio-complex chemically made. The nitro-kN-complex was then prepared by isomerisation of the nitrito-kO-complex. Visible absorption and infrared spectroscopy was then carried out on all three complexes. The molar absorption coefficients calculated were 38.0 cm-1 mol-1 L for the chloridio-complex‚ 76.0 cm-1 mol-1 L for the nitrito-kO-complex and 85.4 cm-1 mol-1 L for the nitro-kN-complex these values
Premium Ammonia Hydrochloric acid Chemistry
three-dimensional structure of the stereoisomer formed in the reaction. Name the compound. meso-Hydrobenzoin 2. Include other results as suggested by your data. * The attached IR and NMR spectroscopy data. * The melting point that ranges from 135.6-137.90C. Spectroscopic Analyses Data tables IR Spectroscopy Hydrobenzoin Peaks (cm-1) | Stretches | Intensity | 3332 (cm-1) | O—H stretch | Strong and broad | 3027 | C—H stretch | Medium and Weak | 14450-1620 (cm-1) | Benzene ring stretch
Premium Alcohol Hydrogen Oxygen