In the Polaroid design the membrane is a special foil consisting of a Kempton® film coated with gold. The foil is stretched over a V-grooved plate‚ Figure 2.5. The transducer is protected by stainless steel housing. A few models with different housings are available. The sizes of these transducers are the main drawback since they are from 30 up to 45 mm in diameter. A further analysis of this structure and its dynamic features is found in [Attila et. al.‚ 1995]. The piezoelectric transducer is based
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HAEMATOLOGY 1 MEDS 1084/1083 SHORT REPORT Use of spectrophotometric techniques to determine the optical density or absorbance for the sample with different dilution factors NAME & STUDENT ID: MANMINDER KAUR COURSE: Haematology 1 COORDINATOR: Genia Burchall PRACTICAL DATE: 26th July‚ 2012 DUE DATE: 10th August‚ 2012 ABSTRACT: This experiment aimed at determining the optical density in terms of absorbance of a solution using the different dilution factors to obtain a standard
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In this experiment spinach‚ DPIP‚ phosphate solutions were placed under various filters and the percent orange light transmittance through the solution was measured to determine the rate of photosynthesis. This experiment was set up to discover how different wavelengths of light affect the rate of photosynthesis in a spinach‚ DPIP‚ phosphate solution. I proposed that the spinach‚ DPIP‚ phosphate solution under no filter‚ and therefore exposed to all light will have a highest percent orange light
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Purpose: To observe the characteristic colors produced when certain metallic ions are vaporized. Metallic Ion Color in Flame Na+ Light Orange K+ Pink / Orange Li Red Ca2+ Dark Orange Sr2+ Red Cu2 Green Co+2 Salmon Pink Ammonium Dichlorate Orange Sparks K2CR2O7 Orange Fe+1 No Reaction NaCl Orange Strantium Chloride Scarlet Red Ni+2 Dark Orange Copper Sulfate (solid) Green Fe+2
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Chapter 5 – Forensic Toxicology 1. What are the three areas covered by forensic toxicology? Toxicology covers post-mortem drug testing‚ workplace drug testing and investigations into contraband materials. 2. Name six specimen types that are often tested in forensic toxicology. Under what circumstances is each specimen preferred? Blood – When testing for DUI’s‚ and two samples for every death case. Urine – Preemployment drug testing and is preferred over blood as its eacsy to collect large amounts
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Relevance of Chemistry 3 Analytical Chemistry 5 Chemical and Biology Safety 9 Classification of Hazardous Chemicals 15 Biochemistry 24 Organic Reactions 32 Radiation 34 Environmental Concerns 40 The Relevance of chemistry to Occupational Safety‚ Health an Environment Chemistry is the science of chemicals which studies the laws governing their formation‚ combination and behaviour under various conditions‚ it
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PHY 114: Absorption of Nuclear Radiation Abstract: The purpose of this experiment was to determine the mass thickness attenuation factor for beta rays when they pass through polyethylene sheets of varying thicknesses. This was done by using an apparatus that measured the seven different intensities and then taking these values‚ putting them through a number of calculations and finally generating a graph of ln(I_corr) versus the thickness of the polyethylene sheets. Once this graph
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Determining Red 40 Concentrations Using Absorption with Beer’s Law Introduction I like color and enjoyed learning about wavelengths and the spectrum of light‚ so I considered incorporating something related to that into my Internal Assessment. We also had just used concentrations in our Group 4 Project‚ so when I found an experiment that dealt with both of these I thought it was a great idea. This experiment is not completely original; the basic concept has been used multiple times. It uses Beer’s
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The goal of this experiment was to measure spectroscope position to calculate wavelengths of line emission spectra while also using this data to determine the unknown mixture of the flame emission procedure of the experiment. The original hypothesis was that the spectroscope would show multiple different line emission spectra in which the ΔE would be negative there was an emission of light as the electron’s decreased in electron transitions. This hypothesis was proven correct‚ as well as‚ the unknown
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3.5.3 X-Ray Diffractometery (XRD). The crystallinities of pure Zolmitriptan‚ excipients and liquisolid system were evaluated by XRD measurement. It has been seen that polymorphic changes of the drug are important factors‚ which may affect the drug dissolution rate and bioavailability(135). The X- ray diffractogram of pure Zolmitriptan Figure (25) exhibited several sharp peaks at different angle (2Ɵ)‚the three strongest angles were 19.2 Ɵ‚ 21.9 Ɵ and 23.8 Ɵ ‚other angles were 12.2 Ɵ‚13.7 Ɵ‚ 14.2
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