Vietnam War Research Paper: During the 30 years of XX century Vietnam was at war. It all started in the 1940′s‚ when the Communists fought against French colonial rule‚ and was completed in 1975 with the fall of Saigon. The period‚ which the Vietnamese know as the “American War” and the Americans call the “Vietnam War”‚ lasted from 1965 to 1973‚ during the time of the U.S. intervention. The communist leader Ho Chi Minh led his forces based in the north and defeated the French in 1954
Premium Research World War II Vietnam War
Introduction to Spectroscopic Methods • Spectroscopy: general term for the science that deals with interaction of various types of radiation with matter 1.Atomic Spectroscopy 2.Molecular spectroscopy • Important to understand the interaction between the electromagnetic radiation and the matter (mainly)‚ + interaction of a acoustic waves and beam of particles (ions‚ electrons) with matter. • Wave model failed to account for absorption and emission of EM energy – (sinosoidal wave model (λ
Free Electromagnetic radiation Light Wavelength
spectrometry / infrared spectroscopy / nuclear magnetic resonance N.M.R.S Investigates the different chemical environment in which the nuclei of one particular element is situated N.m.r spectrum-it shows the salicylic acid contains – one proton in a COOH environment / one proton in a phenolic environment / 4 protons attached to a benzene ring – Limitation of this technique is that it can only consider one environment however. in this case there is 6 Mass spectroscopy From the other tech used
Premium Carboxylic acid Chemistry Salicylic acid
ability to reach extremely high powers are all properties which allow for these specialized applications. Scientific In science‚ lasers are used in many ways‚ including: A wide variety of interferometric techniques Raman spectroscopy Laser induced breakdown spectroscopy Atmospheric remote sensing Investigating nonlinear optics phenomena Holographic techniques employing lasers also contribute to a number of measurement techniques. Laser based LIght Detection And Ranging (LIDAR) technology
Premium Laser
Hydrogel based controlled release formulations: Designing considerations‚ characterization techniques and applications. Abstract Hydrogels have evolved over the last decade as materials of choice in varied biomedical applications. This is associated with the inherent biocompatible nature of the hydrogels. The modulation of the properties of the hydrogels is easily possible due to the availability of polymers of varied chemistry and physical properties. This review discusses the pharmaceutical
Premium Polymer
separate a mixture containing a carboxylic acid and a neutral compound. Once recovered‚ the solids were purified by recrystallization and examined by thin-layer chromatography‚ and their identities were derived by melting point and infrared (IR) spectroscopy. Extraction is a procedure that selectively dissolves one or more of the mixture compounds into a proper solvent. Extraction refers to the moving of compounds from one liquid solvent to another liquid solvent. A compound can be disconnected
Premium Solvent Oxygen Solubility
EFFECTIVENESS OF BASIL ( Ocimum Basilicum Lamiaceace ) PLANT FOR URINARY TRACT INFECTION INTRODUCTION Background of the Study The care of Urinary Tract Infection (UTI) is a common costly problem in acute care and home care population. Many therapies have been made for the treatment. Despite this‚ the patient still suffer from pains when urinating and the financial burden. In the locality‚ Urinary Tract Infection was commonly experienced among teenagers due to lifestyle and diet. Nurses in the community
Premium Basil
Infrared Spectroscopy is used to identify molecules by giving structural information about a molecule. Based on the knowledge that CH bonds have an absorption rate of 3000+-100cm-1 and that C=O bonds (carbonyl groups) have a 1700+- 100cm-1 absorption rate. I was able to locate these types of bonds on the Infrared Spectroscopy reports done by Dr. Yamaguchi. I don’t have enough expertise on how to decipher the other
Premium Chemistry Sodium hydroxide Acetic acid
flavor industries. The equilibrium of the reaction was changed by adding an excess amount of acetic acid. The reaction was refluxed and product was purified by extraction and distillation. Isopentyl acetate was analyzed by infrared spectroscopy and 1H NMR spectroscopy. Reaction Scheme: Mechanism: Key features of the Fischer Esterification mechanism are: a. protonation of the carbonyl group‚ b. the formation of the tetrahedral intermediate‚ and c. regeneration of acid to show its role of catalyst
Premium Ester Carboxylic acid Acetic acid
The objective of this experiment was the synthesis of Isopentyl Acetate using an esterification reaction between acetic acid and Isopentyl Alcohol‚ using a strong acid as a catalyst. The product was washed‚ and distilled. This approach is called Fisher esterification‚ whereby esters are produced by the esterification of a Carboxylic acid where it is heated with an alcohol in the presence of a strong acid which acts as a catalyst. The ester produced had a banana flavor. The extraction of the
Premium Acetic acid Ethanol Chemistry