Food Test 1: Test for Glucose – with Benedicts solution Benedicts solution is used to test for simple sugars‚ such as glucose. It is a clear blue solution of sodium and copper salts. In presence of simple sugars‚ the blue solution changes color to either green‚ yellow or brick-red‚ depending on the amount of sugar. Method 1) Mix smalls amount of each food sample (i.e.‚ Egg lumen‚ cylindrical piece of potato tuber‚ bread crump and crisps) in different test tubes with distilled water to make a
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The Urea test was used to test both Unknown Gram-positive and Unknown Gram-negative bacteria. One colony of bacteria was used from the Unknown 13A plate and Unknown 13B plate in order to inoculate the Urea Slant. After the slant was inoculated‚ the cultures were placed in an incubator at 35ºC for Gram-positive bacteria‚ and 37ºC for Gram-negative bacteria for a total of 48 hours. If the Urea test were positive‚ the color of the slant would have changed to a hot pink color‚ which indicated the bacteria’s
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element tensile test is conducted for element size of 5mm at strain rates mentioned in Fig. 7 7. The true stress versus plastic strain results of the simulation in comparison to the load curve is shown in Fig. 7 9. As the damage is coupled to the stress tensor by Eq. 4 1‚ there is a continuous reduction of stress. The plastic strain at failure for different strain rates is shown in Fig. 7 11 which is in accordance to the scaling factor given for different strain rates. One element tensile test is also conducted
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Verifying Differences Between Athletes’ Heart Rates And Non-Athletes’ Heart Rates By Using Step Test Introduction: Different people have different heart rates because of many reasons such as health condition‚ smoking‚ working out‚ among others. This step test is used to compare and figure out the differences between athletes’ heart rates and non-athletes’ heart rates before and after the test. Kuno Hottenrott stated that the normal average heart rate of people ranges from 40 to 100 beats per
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What is urodynamic testing? Urodynamic tests are done to determine how well your lower urinary tract is working. The lower urinary tract includes your bladder and the tube that empties your bladder (urethra). When your kidneys filter your blood‚ urine is stored in your bladder until you feel the urge to pass urine (urinate). Urination requires coordination between the nerves and muscles of your bladder and urethra. When your lower urinary tract is working well‚ you should be able to: Start urinating
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found in a compound. And in order to detect the presence of metals in a compound‚ flame test is done. The result of the flame test is based on each element’s characteristic which is emission spectrum. Flame test involves placing a sample of an element or compound in a non-luminous flame and observing the resulting color of the flame. Flame test is fast and easy to perform. All the equipment needed for flame test is present in all chemistry laboratories. Solubility is a quantitative term defined
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The catalase test is used to differentiate staphylococci (catalase-positive) from streptococci (catalase-negative). The enzyme‚ catalase‚ protects the bacteria from the toxic by-products of oxygen metabolism. This enzyme is produced by bacteria that respires using oxygen. The catalase-positive bacteria include strict aerobes. Catalase-negative bacteria may be anaerobes‚ or they may be facultative anaerobes do not respire using oxygen as a terminal electron acceptor. The test reaction is very fast
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which was hard to identify the shape of the bacteria‚ while other sections were less concentrated and was easier to analyze the shape. The next step according to the result‚ will be a catalase test.
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An Introduction to Qualitative Analysis Purpose: Tests the ions of Mg2+‚ Ca2+‚ Sr2+‚ and Ba2+‚ and identify them separately. By using these observations‚ identify the unknown ion. Then tests the ions of SO42-‚ CO32-‚ Cl-‚ and I-‚identify them separately‚ and use the observation to identify the unknown. Procedure Part I - Qualitative Analysis of Group 2 Elements Mix 0.02M K2CrO4 with each Mg(NO3)2‚ Ca(NO3)2‚ Sr(NO3)2 and Ba(NO3)2 together. Secondly‚ mix 0.1M (NH4)2C2O4 instead
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used. The tension test is one of the laboratories which help students develop their knowledge in this course by practice. During the laboratory a Tinius Olsen Tension Test equipment was used‚ and the test samples were from low and high carbon steel and timber with grains parallel and perpendicular to the load. Test equipment and materials The test equipment used during the laboratory is one of the Benchtop Materials Testing Machines made by Tinius Olsen. This machine can test different types of
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