Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Pulse01:16

Pulse

2.2K
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...
2.2K
Pulse01:05

Pulse

4.2K
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...
4.2K
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

1.8K
A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
1.8K
Pulse Oximetry01:24

Pulse Oximetry

1.4K
Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
1.4K
Regulation of Pulse01:20

Regulation of Pulse

2.3K
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.
2.3K
Pulse rhythm01:30

Pulse rhythm

1.4K
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...
1.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Reamed and unreamed intramedullary nailing for the treatment of open and closed tibial fractures: a subgroup analysis of randomised trials.

International orthopaedics·2009
Same author

Selective COX-2 inhibitor versus nonselective COX-1 and COX-2 inhibitor in the prevention of heterotopic ossification after total hip arthroplasty: a meta-analysis of randomised trials.

International orthopaedics·2009
Same author

[Study on evaluating sex determining region of the Y as an engrafting track of BMSCs transplantation for repairing osteonecrosis of the femoral head of rabbit].

Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery·2009
Same author

Positive association between benign familial infantile convulsions and LGI4.

Brain & development·2009
Same author

Catalytic enantioselective synthesis of chiral phthalides by efficient reductive cyclization of 2-acylarylcarboxylates under aqueous transfer hydrogenation conditions.

Organic letters·2009
Same author

Significance of urinary liver-fatty acid-binding protein in cardiac catheterization in patients with coronary artery disease.

Internal medicine (Tokyo, Japan)·2009

Related Experiment Video

Updated: Feb 15, 2026

Quantification and Size-profiling of Extracellular Vesicles Using Tunable Resistive Pulse Sensing
12:01

Quantification and Size-profiling of Extracellular Vesicles Using Tunable Resistive Pulse Sensing

Published on: October 19, 2014

19.8K

Resistive-Pulse Analysis of Single Phospholipid Vesicles Using Quartz Nanochannels.

Jonathan T Cox1, Bo Zhang1

  • 1Department of Chemistry, University of Washington, Seattle, Washington 98195-1700 USA.

Dian Hua Xue
|February 6, 2018
PubMed
Summary

This study introduces a resistive-pulse method using quartz nanochannels for precise single vesicle and nanoparticle size analysis. This fast, electronic technique offers a simple and cost-effective alternative for particle characterization.

Keywords:
polystyrene nanoparticlesquartz nanochannelsresistive-pulse methodsingle vesicles

More Related Videos

Patch-Clamp Techniques for Single Endolysosomal Vesicle Analysis
05:47

Patch-Clamp Techniques for Single Endolysosomal Vesicle Analysis

Published on: April 4, 2025

1.2K
Dissipative Microgravimetry to Study the Binding Dynamics of the Phospholipid Binding Protein Annexin A2 to Solid-supported Lipid Bilayers Using a Quartz Resonator
07:11

Dissipative Microgravimetry to Study the Binding Dynamics of the Phospholipid Binding Protein Annexin A2 to Solid-supported Lipid Bilayers Using a Quartz Resonator

Published on: November 1, 2018

7.4K

Related Experiment Videos

Last Updated: Feb 15, 2026

Quantification and Size-profiling of Extracellular Vesicles Using Tunable Resistive Pulse Sensing
12:01

Quantification and Size-profiling of Extracellular Vesicles Using Tunable Resistive Pulse Sensing

Published on: October 19, 2014

19.8K
Patch-Clamp Techniques for Single Endolysosomal Vesicle Analysis
05:47

Patch-Clamp Techniques for Single Endolysosomal Vesicle Analysis

Published on: April 4, 2025

1.2K
Dissipative Microgravimetry to Study the Binding Dynamics of the Phospholipid Binding Protein Annexin A2 to Solid-supported Lipid Bilayers Using a Quartz Resonator
07:11

Dissipative Microgravimetry to Study the Binding Dynamics of the Phospholipid Binding Protein Annexin A2 to Solid-supported Lipid Bilayers Using a Quartz Resonator

Published on: November 1, 2018

7.4K

Area of Science:

  • Nanotechnology
  • Biophysics
  • Analytical Chemistry

Background:

  • Vesicle and nanoparticle characterization is crucial for various scientific fields.
  • Existing methods like DLS and SEM have limitations in speed or sample manipulation.
  • Developing rapid, high-resolution sizing techniques is an ongoing research objective.

Purpose of the Study:

  • To demonstrate the efficacy of the resistive-pulse method with quartz nanochannels for single vesicle and nanoparticle detection.
  • To establish a correlation between nanochannel measurements and conventional sizing techniques.
  • To highlight the potential of this electronic method for future vesicle analysis.

Main Methods:

  • Utilizing cylindrical quartz nanochannels for resistive-pulse measurements.
  • Detecting single phospholipid vesicles (100-300 nm) and polystyrene nanoparticles (170-400 nm).
  • Analyzing translocations as individual square current pulses for size determination.

Main Results:

  • Successfully detected and sized individual vesicles and nanoparticles using the nanochannel system.
  • Observed excellent agreement between nanochannel-derived sizes and those obtained via dynamic light scattering (DLS) and scanning electron microscopy (SEM).
  • Demonstrated the method's speed, simplicity, and reliance on cost-effective, in-house fabricated microsensors.

Conclusions:

  • The resistive-pulse method with quartz nanochannels is a viable technique for accurate single particle sizing.
  • This electronic sensing approach provides a fast and economical alternative to traditional methods.
  • Quartz nanochannels offer a versatile platform that can be integrated with other analytical techniques for comprehensive vesicle analysis.