The vocal folds are two bands of smooth muscle tissue located in the larynx (voice box). The larynx is located in the neck at the top of the trachea (windpipe). Vocal folds produce the sound of your voice by vibration and the air passing through the folds from the lungs. The sound the vocal folds produce is then sent through the throat‚ nose‚ and mouth‚ giving the sound "resonance." The sound of each individual voice is determined by the size and shape of the vocal cords and the size and shape of
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"When a person glimpses the face of a famous actor‚ sniffs a favourite food or hears the voice of a friend‚ recognition is instant. Within a fraction of a second after the eyes‚ nose‚ ears‚ tongue or skin is stimulated‚ one knows the object is familiar and whether it is desirable or dangerous. How does such recognition‚ which psychologists call preattentive perception‚ happen so accurately and quickly‚ even when the stimuli are complex and the context in which they arise varies? Much is known about
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Harmonic Filter Design Considering Variances of Tuning and Quality Factor Young-Sik Cho* and Hanju Cha† Abstract - This paper presents how to select tuning factor and quality factor in designing of a single-tuned passive harmonic filter. Tuning factor and quality factor must be considered before a decision of filter parameters(R‚ L and C). In literature‚ the study about these two factors has not been performed and only empirical values have been used in the passive harmonic filter design so
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your owner’s manual to find out the oil type and filter needed. Each car uses different types of oil‚ so make sure you get the right kind of oil and filter with it. Many stores that sell oil filters have a book that can be referred to for finding the correct filter needed for a specific vehicle. Specific tools are needed to access your oil system. A wrench‚ preferably a socket wrench will be needed to remove the oil plug. Another wrench for the oil filter removal and an oil pan for clean and safe collection
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Materials: filter paper 2.0 ml of vinegar Felt marker pens ruler 400 ml beaker pencil 10 ml graduated cylinder paper clip Water - H2O Safety: Wear goggles and apron during the entire lab. Clean up all materials and lab area. Procedure: 1. Define chromatography: 2. Gather materials for the lab. 3. Mark the filter paper with a pencil line 2.0 cm from the end of the paper. 4. Write the color of the felt marker in pencil at the top of the filter paper.
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being used in the experiment with hydrochloric acid (HCL) then followed with distilled water (H₂O). Then‚ prepared the saturated calcium hydroxide (Ca (OH) ₂) solution into a filter funnel and filter paper over a second conical flask. Pour 100.00mL of saturated Ca (OH)₂ solution into a beaker and pour the solution through the filter paper by flowing the solution through a glass rod. After that‚ use a thermometer to measure the temperature of the solution obtained in the conical flask. Fill 29.00mL of
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Involved : Diphenyl Ethanol Apparatus : Round-bottom flask (100 mL)‚ measuring cylinder (50 mL)‚ conical flask (50 mL)‚ filter flask‚ beaker (100 mL)‚ stemless glass funnel‚ Hirsch funnel‚ capillary tube‚ long glass tube‚ watch glass‚ glass vial‚ water condenser‚ retort stand‚ retort clamps‚ spatula‚ cork stand‚ fluted filter paper‚ filter paper for Hirsch funnel‚ electronic weigh‚ electrothermal heater‚ oven‚ aspirator‚ electrothermal device to determine melting point. Chemicals
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Aim: In this investigation I will try to find how long it takes for the filter paper disc to rise up whilst varying the amounts of concentration of catalyse. Prediction: I predict that the lower the concentration of catalyse the longer it will take for the filter paper disc to rise to the surface of the tube. Equipment: 1. Hydrogen peroxide in a container 2. Flat bottom tube 3. Tweezers 4. Filter paper discs 5. Hole puncher 6. Pipette 7. Watch Glass 8. Stop
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dissolved. The total volume of water used was recorded. The black solid that remain in the dissolved mixture was the impurity. 2. A filter was prepared by placing a fluted filter paper in a 3 inch funnel. The funnel was placed onto a 100mL beaker with 5mL of water at the bottom. The filter paper was moistened. The water was heated to preheat the filter with steam. The solution prepared in step 1 was filtered. 3. A watch glass was placed over the beaker that contained the filtrate and
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plastic Solo cups filter paper bottle of regular hydrogen peroxide 1%‚ 25%‚ 50%‚ 75%‚ and 100% substrate concentration tweezers timer permanent marker pen/pencil paper for data PROCEDURE: The experiment begins with five beakers full of various substrate concentrations. To begin the lab‚ gather five plastic‚ Solo cups and label them 1%‚ 25%‚ 50%‚ 75%‚ and 100% with the permanent marker. Then‚ fill each cup with 75 mL of regular hydrogen peroxide. After‚ lightly dip the filter paper into the
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