Infrared thermometers are used to measure: Surface temp Internal temp of hot food Air temp Internal temp of frozen food 2. Food cannot be re-frozen once it is thawed because: re-freezing encourages dangerous bacteria growth dangerous bacteria can grow on thawed food dangerous visuses can grow on thawed food re-freezing ruins the flavor of the food 3. What is the min temp for transporting hot food and hot holding food items? 135+ 4. The person most likely to contract an illness caused
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survivors and deliver a small package such as a communication device or location marker to help rescuers determine victim’s location and condition. Solutions -Robot tethered through serial cable and controlled via a PS3 controller -Robot consists of infrared sensor to locate victim and proximity sensor to monitor distance between robot and survivor. I. Requirement and Stakeholder Analysis a. Many parties are involved in the construction‚ testing‚ and operation of the USRR‚ and thus a stakeholder
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Furthermore‚ modern software algorithms help to obtain quantitative analysis. This technique works on the fact that bonds and groups of bonds vibrate at characteristic frequencies. A molecule that is exposed to infrared rays absorbs infrared energy at frequencies which are characteristic to that molecule. Then‚ the resulting FT–IR spectra are compared and matched with known signatures of identified materials in the FT–IR library (Bruni et al. 1999). Case study Pigment samples
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According to R. James Seffrin‚ a director for the Definitive Internet Resource for Infrared Thermography‚ Seffrin explains that all objects emit infrared radiation as long as the object is above absolute zero (Kelvins). The cameras that can see and distinguish temperature are called‚ “thermal imagers.” These imagers convert the perceived radiation into scaled colors
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displacement - LVDT‚ photoelectric‚ capacitive‚ magnetic‚ ultrasonic. Biosensors - Resonant mirror‚ electrochemical‚ surface Plasmon resonance‚ Light addressable potentio-metric. Image - Charge coupled devices‚ CMOS Gas and chemical - Semiconductor‚ Infrared‚ Conductance‚ Electrochemical. Acceleration - Gyroscopes‚ Accelerometers. Others - Moisture‚ humidity sensor‚ Speed sensor‚ mass‚ Tilt sensor‚ force‚ viscosity. Principles of some of the common sensor: Thermocouple – They are made of
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high way lights to be switched on are when there is absolute darkness. This project gives the best solution for electrical power wastage protection. Also the manual operation of the lighting system is completely eliminated. There is provided an infrared sensor unit for deactivating an electrical appliance when left unattended by its user. The sensor
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both of these compounds (Wikipedia may be helpful). What would be a good estimate for the pKa of Eugenol? Eugenol‚ pKa=10.19 at 25 degrees C. 3.) The recovered clove oil will be analyzed by Infrared Spectroscopy. What are the basic principles of Infrared Spectroscopy (can be included in the introduction if you prefer). How will we be able to distinguish between Eugenol and Acetyleugenol by IR sprectroscopy? Molecule atoms act like they are connected by flexible springs
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1680-1600 1600-1400 2250-2100 1740-1720 1725-1705 1725-1700 1750-1730 1700-1640 1810 and 1760 1300-1000 Intensity s m m m s s s m w w m-w m-w m-w s s s s s s s Alkanes -CH3 -CH2Alkenes (stretch) (bend) (bend) (stretch) CHARACTERISTIC INFRARED FREQUENCIES (bend) Aromatic (stretch) (out-of-plane bend) Alkyne Aldehyde C=C C C C=O (stretch) Alkene (stretch) Aromatic (stretch) Alkyne (stretch) Aldehyde (stretch) Ketone (acyclic) Carboxylic Acid Ester Amide Anhydride Alcohols‚ ethers
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Cyclohexene b. 1-Methylcyclohexanol methylcyclohexene c. 2-Methylcyclohexanol methylcyclohexne d. 2‚2-dimethylcyclohexanol 1‚2-dimethylcyclohexene 3. Compare and interpret the infrared spectra of 4-Methylcyclohexene and 4-Methylcyclohexanol. 4. Identify the C-H out of plane bending vibrations in the infrared spectrum of 4-methylcyclohexne. What structural information can be obtained from these bands? E. Literature Article: Properties of 4-Methylcyclohexene 1. Flash point: 154F 2. OSHA
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Experiment 6 Infra-Red Spectroscopy of HCl and DCl gas Abstract Fourier-transform infrared spectroscopy has been very useful in helping scientists examining molecules of HCl and DCl. Because deuterium has a greater mass than hydrogen‚ the IR band shown for HCl is at a higher wavelength than DCl. The absorption of light in DCl was at lower frequency 1700-2200 cm-1 because D is bigger and heavier. That’s why the vibrations on the IR were shorter for DCl compared to HCl. The stretching of
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