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Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Pulse01:16

Pulse

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 indicator...
Pulse01:05

Pulse

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.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls between...
Regulation of Pulse01:20

Regulation of Pulse

Pulse regulation involves physiological mechanisms that ensure adequate blood flow throughout the body. The heartbeat, regulated by the autonomic nervous system, is influenced by hormonal balance, physical activity, and emotional state.
Pulse Assessment Sites01:11

Pulse Assessment Sites

Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...

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A compact, portable pulse forming line.

Liansheng Xia1, Huang Zhang, Jinshui Shi

  • 1Institute of Fluid Physics, Chinese Academy of Engineering Physics, Mianyang 621900, People's Republic of China.

The Review of Scientific Instruments
|December 3, 2008
PubMed
Summary
This summary is machine-generated.

Researchers developed a compact, portable pulse forming line using strontium titanate (SrTiO3) ceramic. This high-dielectric-constant material enabled significant energy storage and high-voltage pulse generation.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Pulsed Power Technology

Background:

  • Development of compact and portable pulse forming lines is crucial for various applications.
  • Existing dielectric materials may have limitations in energy storage density and performance.
  • Strontium titanate (SrTiO3) ceramics offer a high dielectric constant, suggesting potential for improved energy storage.

Purpose of the Study:

  • To investigate the feasibility of using SrTiO3 ceramic as a dielectric for compact, portable pulse forming lines.
  • To successfully manufacture large-sized SrTiO3 ceramic bulks for this application.
  • To evaluate the performance of the fabricated pulse forming line in terms of voltage pulse generation.

Main Methods:

  • Manufacturing of large ceramic bulks (80 x 10 x 6 cm3) using strontium titanate (SrTiO3).
  • Utilizing the manufactured SrTiO3 ceramic as the dielectric material in a planar pulse forming line.
  • Testing the pulse forming line to measure generated voltage pulse characteristics.

Main Results:

  • Successfully manufactured large SrTiO3 ceramic bulks, overcoming manufacturing challenges.
  • The developed planar pulse forming line demonstrated a high dielectric constant (around 300) for the SrTiO3 ceramic.
  • The compact, portable pulse forming line generated a voltage pulse up to 150 kV with a duration of approximately 92 ns.

Conclusions:

  • SrTiO3 ceramic is a viable and effective dielectric material for constructing compact, portable pulse forming lines.
  • The high dielectric constant of SrTiO3 enables superior energy storage compared to materials like water.
  • The successful fabrication and performance demonstrate a significant advancement in portable pulsed power technology.