Novel blood-powered chip offers real-time health monitoring
Metabolic disorders, like diabetes and osteoporosis, are burgeoning throughout the world, especially in developing countries.
Jun 24, 2024
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Metabolic disorders, like diabetes and osteoporosis, are burgeoning throughout the world, especially in developing countries.
Jun 24, 2024
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University of North Carolina at Chapel Hill scientists have created innovative soft robots equipped with electronic skins and artificial muscles, allowing them to sense their surroundings and adapt their movements in real-time, ...
Jun 10, 2024
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A group of researchers from Chalmers University of Technology in Sweden, University of Freiburg and the Netherlands Institute for Neuroscience have created an exceptionally small implant with electrodes the size of a single ...
May 7, 2024
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As the number of complex heart operations has increased over the years, so have cases of postoperative heart block, a form of arrhythmia that often requires a pacemaker and more surgery. Heart block occurs when unseen conduction ...
Mar 8, 2024
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Scientists at the Centre de recherche Azrieli du CHU Sainte-Justine, affiliated with Université de Montreal, have developed a device that accurately simulates the electrical activity, mechanics and physiology of a human ...
Feb 14, 2024
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A study sets the foundation of a ground-breaking treatment regimen for treating ventricular arrhythmia. The research, published in Nature Communications, demonstrates the design and feasibility of a new hydrogel-based pacing ...
Jan 9, 2024
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Humans have evolved a remarkable ability to effortlessly learn which stimuli in their environment predict potential threats, enabling them to survive in the complex world. According to the widely accepted Preparedness Theory, ...
Jul 23, 2023
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An international consensus statement on the safest and most effective way to implant a pacing system that mimics the heart's normal function is published today in EP Europace, a journal of the European Society of Cardiology ...
Apr 16, 2023
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Brain phantoms are a creative solution for a challenging question: How do you tune an electromagnetic field to a patient without testing on the actual patient?
Nov 7, 2022
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A team of researchers at the Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM in Dresden is developing resorbable pacing leads that can significantly reduce risk factors after cardiac surgery. ...
Nov 2, 2022
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Electrical conductivity or specific conductance is a measure of a material's ability to conduct an electric current. When an electrical potential difference is placed across a conductor, its movable charges flow, giving rise to an electric current. The conductivity σ is defined as the ratio of the current density to the electric field strength :
It is also possible to have materials in which the conductivity is anisotropic, in which case σ is a 3×3 matrix (or more technically a rank-2 tensor) which is generally symmetric.
Conductivity is the reciprocal (inverse) of electrical resistivity, ρ, and has the SI units of siemens per metre (S·m-1):
Electrical conductivity is commonly represented by the Greek letter σ, but κ (esp. in electrical engineering science) or γ are also occasionally used.
An EC meter is normally used to measure conductivity in a solution.
This text uses material from Wikipedia, licensed under CC BY-SA