Video an giography is used to measure blood flow and determine the status of circulatory function. In order to quantify the video an giograms, blood vessel diameter and blood velocity are needed such that total blood flow is determined. Below is the densitometric profile taken from a videoangiogram of a blood vessel. One way to determine consistently where the edge of the blood vessel is from the angiogram is to determine where the first derivative of the profile is an extreme value. Using the data provided, find the boundaries of the blood vessel and estimate the blood vessel diameter. Use both
Want to see the full answer?
Check out a sample textbook solutionChapter 24 Solutions
EBK NUMERICAL METHODS FOR ENGINEERS
- Ql: The viscosity in industrial measurement continue to use the CGS system of Lunits, since centimeters and grams vield convenient numbers for many fluids. The absolute viscosity () unit is the poise, I poise = 1 gtem. s). The kinematic viscosity (v) unit is the stohes, I stokes = 1 em /s. Water at 20C has u = 001 poise and also V= 0.01 stokes. Express these resalts in (a) SI and (h) BG tanits.arrow_forwardAs we explained in earlier chapters, the air resistance to the motion of a vehicle is something important that engineers investigate. The drag force acting on a car is determined experimentally by placing the car in a wind tunnel. The air speed inside the tunnel is changed, and the drag force acting on the car is measured. For a given car, the experimental data generally is represented by a single coefficient that is called drag coefficient. It is defined by the following relationship: F, where air resistance for a car that has a listed C, = drag coefficient (unitless) measured drag force (N) drag coefficient of 0.4 and width of 190 cm and height of 145 cm. Vary the air speed in the range of 15 m/sarrow_forwardWhen fluid flows over a surface, the Reynolds number will output whether the flow is laminar (smooth), transitional, or turbulent. Determine the dimension for the Reynolds number using the SI. The Reynolds number is expressed as pVD R = where p is the density of the fluid, V is the free stream fluid velocity, Dis the characteristic length of the surface, and u is the fluid viscosity. The units of fluid viscosity are kg/(m - s). O a.s1 O b. m O c. m/s O d. Dimensionlessarrow_forwardRecord the dimensions of the known (calibration) block using the caliper and dial gauge on the table below. Indicate the units of each measurement. Calculate the average length of each side of the block. Dimension Caliper (Units) 0.995 1.455 0.985 Ruler(in) A: 0.9 B: 1.5 C: 0.9 A B C Dimension A B Instrument Use the average dimensions (see Problem 2a) of the known block to calibrate the LVDT at your workstation. Record the voltage on the table below: LVDT Offset: 0.556 (Do not include the offset value in your average dimensions) C Ave Dimension (Units) (Dial Gauge) 0.997 1.659 0.949 0.964 in 1.538 in 0.945 in oltage Average Dimension 1.244 volt 1.994 1.28 0.964 in 1.538 in 0.945 inarrow_forwardConstruct a plot showing the sequence of events on an oil viscosity vs. pressure for the given reservoir below. A reservoir was discovered in an undersaturated condition (call this state, point A). Gas was injected to maintain pressure (point B), and eventually formed a secondary gas cap (point C). Water injection was employed to increase the reservoir pressure (above discovery pressure) until an undersaturated condition existed again (point D). Finally, all injection ceased and the reservoir was blown down to abandonment pressure (point E).arrow_forward(b) A pitot-static probe is use to determine the flow velocity by measuring the differential pressure. The pitot formula to obtain the flow velocity is, 2(P- P,) V = where, V is the velocity, P is pressure and pis fluid density. i) The pressure difference sensor use in the system is electronic types and the output of the device is measured in voltage. The output of the pressure device is 3.5 V and the linear relationship between the device and the pressure difference is 10 kPa/V. If the measured fluid is water at 20°C, determine the pressure difference inside the system the water velocity. ii) The Pitot-static tube is also commonly use in aircraft. An aircraft flying at 3000 m above sea level when the differential pressure reading clocked 3 kPa. Determine the speed of the aircraft.arrow_forwardLab 2-Measurement Asynch - Tagged.pdf Page 4 of 7 ? Part I: Taking Measurements & Estimating Uncertainties for a single measurement www.stefanelli.eng.br The mass of the object is_ 0 i Parts on a tripie peam palance 0 0 10 20 30 1 100 2 3 40 200 4 +/- 50 60 70 5 300 7 400 80 Qv Search 8 90 9 500 100 9 10 g www.stefanelli.eng.brarrow_forwardAccording to Hooke's Law, we need to be measuring x (the length of the spring) however our CBR is set up to measure y( the height of the bottom of the mass). Create a diagram and explains why we can swap out x variables for y variables when conducting this experiment x yarrow_forwardAs an engineer working for a water bottling company, you collect the following data in order to test the performance of the bottling systems. Assume normal distribution. Milliliters of Water in the Bottle Frequency 485 490 milliliters 495 500 505 510 515 What is the mean (in milliliters)? milliliters What is the standard deviation (in milliliters)? What is the z value corresponding to 490 milliliters? Z = 6 12 20 33 18 11 00 8arrow_forwardWe wish to measure a characteristic of a machined part whose nominal size is 50 mm at 20 °C. For this, two different instruments are used; an analog micrometer and a digital vernier caliper, both recently calibrated and with the same resolution (0.01 mm). The calibration certificate data of the analog micrometer and the digital vernier are shown in tables 5 and 6 respectively. In both cases the calibration uncertainty does not include the contribution of resolution uncertainty. Additionally, there are drift studies for both instruments and it is established that the drift of the micrometer is ± 0.002 mm while the drift of the vernier is ± 0.02 mm. The same number of measurements were performed with both instruments to avoid repeatability biases under controlled environmental conditions. Table 7 shows the results of the measurements of both instruments. The temperature of the piece was monitored with a digital thermometer whose calibration uncertainty is 0.1 °C, which already includes…arrow_forwardA cheap accelerometer, probably worth the price, can bemade from a U-tube as in Fig. . If L = 18 cm andD = 5 mm, what will h be if a x = 6 m/s 2 ? Can the scalemarkings on the tube be linear multiples of a x ?arrow_forwardQuestion 4 Viscosity. From studies of the flow of neutrophils in micropipets, it is possible to measure the apparent viscosity of the cytoplasm. From the data below, do you think the cytoplasm is Newtonian? If not, determine the rheological relationship that best describes the behavior of the cytoplasmic viscosity Shear rate (s1) Apparent Viscosity (Pa s) 450 0.111 1 137 2.70 97 5.75 58 7 58arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY