Definitions of high-velocity. adjective. operating at high speed. “a high-velocity shell” synonyms: high-speed.
Higher velocity in the middle of the vessel, shown in yellow (thin arrow), is indicative of laminar blood flow in the artery. Disturbed Blood Flow. Turbulent and disturbed spectral waveforms are usually, but not always, indicative of pathological changes in blood flow.
Blood Velocity
At rest, the peak velocity in the aorta is about 1 m/sec and this may increase to more than 3 m/sec during exercise, when cardiac output is increased. Similarly, blood velocity increases at a site of pathologic narrowing (e.g., aortic coarctation, aortic valve stenosis).
High Resting Coronary Flow Velocity by Echocardiography Is Associated With Worse Survival in Patients With Chronic Coronary Syndromes | Journal of the American Heart Association.
Thus when velocity increases, the pressure decreases at that section to keep the total energy (head) constant. Consider a steady flow of an incompressible and non-viscous fluid with constant density ρ through a horizontal pipe with converging from A1 at section X-X to A2 at section Y-Y (As shown in figure).
The velocity can be calculated by the difference in transmit-to-receive time from the first pulse to the second (t2), as the scatterer moves through the beam. Figure 2: Doppler ultrasound. Doppler ultrasound measures the movement of the scatterers through the beam as a phase change in the received signal.
Velocity Ratio refers to the ratio of speeds of the load and effort. Both these concepts are proportional to each other i.e. increases MA increases VR, and vice versa. ### Applications ##### High MA A good, simple example of a machine with high mechanical advantage is a bicycle with on a low gear, such as gear 1.
A high-risk pregnancy is one in which a woman and her fetus face a higher-than-normal chance of experiencing problems. These risks may be due to factors in the pregnancy itself, or they may stem from preexisting maternal medical conditions, such as cancer, diabetes, or lupus.
Standard Velocity is typically just under the Speed of Sound; less than 1125fps. High Velocity is in the range of 1200fps to 1400fps. Hyper Velocity is in the range of +1400fps and above.
High-velocity decision making is a decision-making process that emphasizes speed and agility, often used in fast-paced, dynamic environments like startups and technology companies.
Higher velocity equates to lower drag, until you pass the trans sonic range where subsonic flight will always have less drag due to the lack of a shock wave.
Speed tells you how fast. Velocity tells you how fast and in what direction.
Examples of high velocity
High velocity jets or streams frequently followed curved paths, deflected by deformations of the aortic wall. The molten metal now has a high velocity and it can escape from the hole. In fact, an actuator cannot produce simultaneously high torque and high velocity.
Since force cause changes in the speed or direction of an object, we can say that forces cause changes in velocity. Remember that acceleration is a change in velocity. So forces cause acceleration.
In physics, speed is already the rate of distance over time, otherwise known as velocity. Rate of speed is velocity over time, otherwise known as acceleration. By saying high rate of speed they would be implying picking up more speed.
operating at high speed. “a high-velocity shell” synonyms: high-speed. fast. acting or moving or capable of acting or moving quickly.
If the velocity ratio of a machine is greater than one, it implies that the machine is a force multiplier and causes loss of speed.
Abstract. In diagnostic ultrasound imaging the speed of sound is assumed to be 1540 m/s in soft tissues. When the actual speed is different, the mismatch can lead to distortions in the acquired images and so reduce their clinical value.
According to the literature review, the normal levels of flow velocities in visceral vessels are as follows(3): celiac trunk: PSV – 98–105 cm/s; SMA: PSV – 97–142 cm/s; IMA: PSV – 93–189 cm/s.
Velocity-encoding (Venc) gradients are used to generate a phase shift in magnetic resonance phase contrast imaging proportional to the velocity of moving protons. This phenomenon can be used to depict and measure the velocity of spins and thus flow 1.
If the velocity is very high, threats strike quickly. Thus, these risks are more likely to become issues, costing more time and money. Here are some causal factors for high-velocity risks: Sponsor notifies you that two critical team members need to be transitioned to another project within two weeks.
Higher Velocity Improving Accuracy
The increased speed means that the ammunition will spend less time traveling to its destination. When you limit this time, you are also able to reduce the amount of time that the ammunition will be impacted by external elements, such as wind.
Definition. Velocity of a projectile or bullet is usually measured in ft/s or m/s. The two most common descriptions of velocity are high and low velocity relating to rifle (>2,500 ft/s) or handgun (<1,000 ft/s).