Non-invasive Detection of Extent of Corrosion in Steel Reinforcing Bars by Magnetic Force Measurement

2021 ◽  
pp. 11-17
Author(s):  
Durgesh Tamhane ◽  
Sauvik Banerjee ◽  
Siddharth Tallur
Keyword(s):  
Magnetic Force ◽  
Force Measurement ◽  
Reinforcing Bars ◽  
Non Invasive

Reproducibility of a non-invasive ultrasonic technique of tendon force measurement, determined in vitro in equine superficial digital flexor tendons

2009 ◽  
Vol 42 (13) ◽  
pp. 2210-2213 ◽  
Author(s):  
Nathalie Crevier-Denoix ◽  
Bérangère Ravary-Plumioën ◽  
Delphine Evrard ◽  
Philippe Pourcelot
Keyword(s):  
Force Measurement ◽  
Ultrasonic Technique ◽  
Flexor Tendons ◽  
Non Invasive ◽  
Tendon Force

scholarly journals Designing and analyzing two non-invasive current sensors using Ampere Force Law (AFL)

2019 ◽  
Author(s):  
Mohammad Reza Zamani Kouhpanji
Keyword(s):  
Power Consumption ◽  
Magnetic Force ◽  
Permanent Magnets ◽  
Current Sensor ◽  
Single Wire ◽  
Non Invasive ◽  
Ampere Force ◽  
The Wire ◽  
Current Sensors ◽  
A Current

Here two different non-invasive current sensors are proposed, modeled and analyzed. The current sensors are based on the Ampere Force Law (AFL), defining the magnetic force between two parallel wire carrying currents. These current sensors can be used for detecting/sensing DC and AC currents as well as their combination in a single wire or multiple wires, and they do not rely on any permanent magnets for operation. In the first configuration, there are two microbeams, in which one of them is at the vicinity of the wire and undergoes the mechanical vibrations due to the magnetic force between the wire and the microbeam. The movement of the microbeam while it is generating a magnetic field induces a current inside another microbeam, which is stationary, as the output signal of the current sensor. In the second configuration, a single composite piezoelectric microbeam is used. The magnetic force between the wire and the piezoelectric microbeam leads the piezoelectric microbeam to move, thus it produces a voltage. Both configurations present extremely low power consumption, which is not dependent on the sensitivity of the current sensors. The dynamic response, sensitivity and power consumption of the current sensors are investigated, compared and discussed.

scholarly journals Effects of the dynein inhibitor dynarrestin on the number of motor proteins transporting synaptic cargos

2020 ◽  
Author(s):  
Kumiko Hayashi ◽  
Miki G. Miyamoto ◽  
Shinsuke Niwa
Keyword(s):  
Axonal Transport ◽  
Optical Tweezers ◽  
Hippocampal Neurons ◽  
Motor Proteins ◽  
Force Measurement ◽  
Retrograde Transport ◽  
Long Distance ◽  
Anterograde Transport ◽  
Non Invasive ◽  
Physical Measurements

AbstractSynaptic cargo transport by kinesin and dynein in hippocampal neurons was investigated using non-invasive measurements of transport force based on non-equilibrium statistical mechanics. Although direct physical measurements such as force measurement using optical tweezers are difficult in an intracellular environment, the non-invasive estimations enabled enumerating force producing units (FPUs) carrying a cargo comprising the motor proteins generating force. The number of FPUs served as a barometer for stable and long-distance transport by multiple motors, which was then used to quantify the extent of damage to axonal transport by dynarrestin, a dynein inhibitor. We found that dynarrestin decreased the FPU for retrograde transport more than anterograde transport. In the future, these measurements may be used to quantify the damage to axonal transport resulting from neuronal diseases including Alzheimer’s, Parkinson’s, and Huntington’s diseases.

scholarly journals Magnetic Nanoprobes for Spatio-Mechanical Manipulation in Single Cells

2021 ◽  
Author(s):  
Iuliia P Dr. Novoselova ◽  
Andreas Neusch ◽  
Julia-Sarita Brand ◽  
Marius Otten ◽  
Mohammad Reza Safari ◽  
...  
Keyword(s):  
Magnetic Force ◽  
Single Cells ◽  
Nano Particles ◽  
Magnetic Response ◽  
Force Response ◽  
Non Invasive ◽  
Remote Manipulation ◽  
Structure Surface ◽  
Spatial Redistribution ◽  
A Cell

Magnetic nanoparticles (MNPs) are widely known as valuable agents for biomedical ap-plications. Yet, for their successful application within cells they need to fulfill a variety of demands such as monodispersity, biocompatibility or sufficient magnetic response. Given these prerequisites, MNPs may be used for remote, non-invasive manipulation, where their spatial redistribution or force response in a magnetic field provides a fine-tunable stimulus to a cell. Here, we investigate the properties of two different MNPs and their suitability for spatio-mechanical manipulations: sem-isynthetic magnetoferritin nanoparticles and fully synthetic nanoflower-shaped iron-oxide nano-particles. Next to characterizing their structure, surface potential and magnetic response, we monitor the MNP performance in a living cell environment using fluorescence microscopy and confirm their biocompatibility. We then demonstrate their capability to spatially redistribute and to respond to magnetic force gradients inside a cell. Our remote manipulation assays present these tailored mag-netic materials as suitable agents for applications in magnetogenetics, biomedicine or nanomaterial research.

A non-invasive method of tendon force measurement

2005 ◽  
Vol 38 (10) ◽  
pp. 2124-2129 ◽  
Author(s):  
Philippe Pourcelot ◽  
Marielle Defontaine ◽  
Bérangère Ravary ◽  
Mickaël Lemâtre ◽  
Nathalie Crevier-Denoix
Keyword(s):  
Force Measurement ◽  
Non Invasive ◽  
Invasive Method ◽  
Tendon Force

scholarly journals A novel method to determine perineal artery occlusion among male bicyclists

2015 ◽  
Author(s):  
Sujeeth Parthiban ◽  
James M Hotaling ◽  
Martin Kathrins ◽  
Amit P Baftiri ◽  
Sally Freels ◽  
...  
Keyword(s):  
Doppler Ultrasonography ◽  
Force Measurement ◽  
Significant Risk ◽  
Artery Occlusion ◽  
Healthy Men ◽  
Occlusion Time ◽  
The Road ◽  
Non Invasive ◽  
Novel Method

Background: Perineal pressure due to bicycle riding has been associated with erectile dysfunction. We developed a novel method to measure the occlusive force exerted over the perineal arteries and determined perineal artery occlusion by a variety of seat designs. Methods: Doppler ultrasonography facilitated perineal artery localization and determination of the force required for perineal artery occlusion in 20 healthy men. Flexiforce® sensors were affixed over the proximal and distal aspects of the perineal arteries bilaterally. Individuals completed bicycle rides in the road- and stationary-settings with six distinct seat designs. , including those with and without an anterior “nose”. Results: The occlusion time proportion of the total ride time was calculated for each trial. The overall occlusion time proportion was 0.59 (95% CI 0.45-0.73) across all seats and settings. The “no-nose” bicycle seat and the stationary-setting demonstrated significantly lower occlusion proportion times than the traditional nose bicycle seat and road-setting, respectively. However, all bicycle seats yielded an occlusion time proportion of 0.41 or greater. Discussion: Our method of real-time, non-invasive force measurement localized to the perineal arteries may be used to validate future bicycle seat design. It also underscores the significant risk of perineal artery insufficiency in men who are avid bicyclists. This risk may be minimized by using newer “no-nose” bicycle seats.

scholarly journals A novel method to determine perineal artery occlusion among male bicyclists

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1477
Author(s):  
Sujeeth Parthiban ◽  
James M. Hotaling ◽  
Martin Kathrins ◽  
Amit P. Baftiri ◽  
Sally Freels ◽  
...  
Keyword(s):  
Doppler Ultrasonography ◽  
Force Measurement ◽  
Significant Risk ◽  
Artery Occlusion ◽  
Healthy Men ◽  
Occlusion Time ◽  
The Road ◽  
Non Invasive ◽  
Novel Method

Background.Perineal pressure due to bicycle riding has been associated with erectile dysfunction. We developed a novel method to measure the occlusive force exerted over the perineal arteries and determined perineal artery occlusion by a variety of seat designs.Methods.Doppler ultrasonography facilitated perineal artery localization and determination of the force required for perineal artery occlusion in 20 healthy men. Flexiforce®sensors were affixed over the proximal and distal aspects of the perineal arteries bilaterally. Individuals completed bicycle rides in the road- and stationary-settings with six distinct seat designs, including those with and without an anterior “nose.”Results.The occlusion time proportion of the total ride time was calculated for each trial. The overall occlusion time proportion was 0.59 (95% CI [0.45–0.73]) across all seats and settings. The “no-nose” bicycle seat and the stationary-setting demonstrated significantly lower occlusion proportion times than the traditional nose bicycle seat and road-setting, respectively. However, all bicycle seats yielded an occlusion time proportion of 0.41 or greater.Discussion.Our method of real-time, non-invasive force measurement localized to the perineal arteries may be used to validate future bicycle seat design. It also underscores the significant risk of perineal artery insufficiency in men who are avid bicyclists. This risk may be minimized by using newer “no-nose” bicycle seats.

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