Thompson Test
Thompson Test - Related Videos
01:21
Joule-Thomson Effect
0 Views •
2025
The Joule-Thomson effect, also known as the Joule-Kelvin effect, describes the temperature change of a fluid when it is forced through a valve or porous plug while keeping it in a thermally insulated environment. This experiment is called a throttling process. This is an important effect widely used in refrigeration and the liquefaction of gases. This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...
01:19
Thomson's e/m Experiment
0 Views •
2023
In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam. A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...
01:23
The Joule and Joule–Thomson Experiments
0 Views •
2026
Consider an adiabatic system composed of two chambers, A and B, designed such that no heat flows into or out of the system. Initially, chamber A is filled with a gas at a fixed temperature T1, pressure p1, and volume V1, while chamber B is evacuated. The gas is then gradually forced through a rigid, porous barrier to chamber B, ultimately reaching temperature T2, pressure p2, and volume V2. A piston on the right side maintains a constant pressure (p2), which is lower than p1. The significant...
10:16
Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
0 Views •
Cited by 49 •
2011
The methodology for fabricating synthetic vocal fold models is described. The models are life-sized and mimic the multi-layer structure of the human vocal folds. Results show the models to self-oscillate at pressures comparable to lung pressure and demonstrate flow-induced vibratory responses that are similar to those of human vocal folds.
06:48
Fingerprinting Cardiolipin in Leukocytes by Mass Spectrometry for a Rapid Diagnosis of Barth Syndrome
0 Views •
Cited by 3 •
2022
This protocol shows how to obtain a mass spectrometric "fingerprint" of leukocyte cardiolipin for the diagnosis of Barth syndrome. The assessment of elevated monolysocardiolipin to cardiolipin ratio discriminates patients with Barth syndrome from control heart failure patients with 100% sensitivity and specificity.
FAQs
The maneuver links a visible foot movement to the continuity of the calf-Achilles-heel force pathway. A gentle calf squeeze should transmit force through an intact pathway and produce passive plantarflexion. If that movement is absent or markedly reduced, the expected transmission is disrupted, making Achilles tendon rupture a concern.
The heel is the endpoint of the force pathway being examined. The Achilles tendon transmits force from the calf muscles toward the heel, so observing foot plantarflexion provides a functional sign that this calf-tendon-heel connection remains continuous. This makes the response clinically meaningful rather than merely a movement observation.
An absent or markedly reduced response is concerning because it suggests that force from the squeezed calf is not being transmitted normally through the Achilles tendon to the heel. In an acute ankle injury, this finding raises concern for rupture and signals that the patient needs further clinical assessment rather than relying on the bedside observation alone.
Position the patient prone with the feet extending beyond the examination table. The clinician then gently squeezes the calf and watches the foot for passive plantarflexion. Keeping the setup consistent allows the observed movement to be interpreted against the expected response of the calf-Achilles-heel mechanism.
It is particularly useful during the initial assessment of an acute ankle injury, when a clinician needs a rapid bedside indication of Achilles tendon continuity. The result can help determine whether further evaluation is warranted and can contribute to decisions about imaging and treatment planning.
Findings are interpreted as one part of the clinical assessment. A normal plantarflexion response suggests continuity of the calf-Achilles-heel mechanism, whereas absent or markedly reduced movement raises concern for rupture. These observations help clinicians decide how to pursue further evaluation, including imaging, and support treatment planning.