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Related Concept Videos

Pulse01:16

Pulse

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When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
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The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
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Accelerators in concrete serve as admixtures to speed up the hardening process, enabling the concrete to achieve early strength faster. Although accelerators do not necessarily impact the time it takes concrete to set, they reduce this time in practice. A common accelerator is calcium chloride, which is particularly useful for hastening early strength development in cold weather or for rapid repair jobs that require quick heat generation after mixing.
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The electron affinity (EA) is the energy change for adding an electron to a gaseous atom to form an anion (negative ion).
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Average Acceleration01:30

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The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...
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Acceleration is in the direction of the change in velocity, but it is not always in the direction of motion. When an object slows down, its acceleration is opposite to the direction of its motion. Although commonly referred to as deceleration, this causes confusion in our analysis as deceleration is not a vector, and does not point to a specific direction with respect to a coordinate system. Therefore, the term deceleration is not used. For example, when a subway train slows down, it...
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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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MeV electron acceleration at 1  kHz with <10  mJ laser pulses: erratum.

F Salehi, A J Goers, G A Hine

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    |March 31, 2018
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    Summary

    This erratum updates the funding information for a previously published article in Optics Letters. The correction ensures accurate acknowledgment of financial support for the research.

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    Area of Science:

    • Optics and Photonics

    Background:

    • Previous publication in Optics Letters (Vol. 42, p. 215, 2017).
    • The original article required a funding section update.

    Purpose of the Study:

    • To provide a corrected funding statement for the research published in Opt. Lett. 42, 215 (2017).

    Main Methods:

    • Review and amendment of the funding acknowledgement section.

    Main Results:

    • The funding section of the specified article has been officially updated.
    • Ensures accurate attribution of research grants and financial support.

    Conclusions:

    • The erratum rectifies the omission or inaccuracy in the original funding statement.
    • Provides transparent and correct financial disclosure for the published research.