New research sheds light on how mesothelioma develops
Mesothelioma has been a high-profile disease at the center of several multibillion-dollar lawsuits, but the disease itself remains a medical mystery.
May 10, 2023
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Mesothelioma has been a high-profile disease at the center of several multibillion-dollar lawsuits, but the disease itself remains a medical mystery.
May 10, 2023
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66
Skoltech researchers have created a solution for quick functional checks of optoacoustic microscopes and tomographs. These are diagnostic devices that use harmless laser irradiation and ultrasound waves instead of X-rays ...
Nov 17, 2022
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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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Wearing face masks has been recognized as one of the most effective ways to prevent the spread of COVID-19, even in its coming endemic phase. Apart from the conventional function of masks, the potential for smart masks to ...
Nov 2, 2022
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A method of highly accurate and sensitive virus identification using Raman spectroscopy, a portable virus capture device and machine learning could enable real-time virus detection and identification to help battle future ...
Jun 3, 2022
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Dopamine is an important signaling molecule for nerve cells. Its concentration could not be precisely determined with both high spatial or temporal resolution until now. A new method has now made this possible: A research ...
May 27, 2022
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A new type of lightweight 3D-printed back brace capable of sensing how effectively it fits patients could lead to improved treatment for scoliosis, its developers say.
Feb 7, 2022
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"Sutures? That's practically medieval!"
Nov 29, 2021
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A new cardiac patch developed by a collaborative team led by Western University is just the stuff that could get your blood pumping—literally.
Sep 30, 2021
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Cardiovascular disease remains the number one cause of death globally. Unfortunately, the heart cannot regenerate new tissue, because the cardiomyocytes, or heart muscle cells, do not divide after birth.
Mar 2, 2021
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Carbon nanotubes (CNTs) are allotropes of carbon with a cylindrical nanostructure. Nanotubes have been constructed with length-to-diameter ratio of up to 28,000,000:1, which is significantly larger than any other material. These cylindrical carbon molecules have novel properties that make them potentially useful in many applications in nanotechnology, electronics, optics and other fields of materials science, as well as potential uses in architectural fields. They exhibit extraordinary strength and unique electrical properties, and are efficient conductors of heat. Their final usage, however, may be limited by their potential toxicity.
Nanotubes are members of the fullerene structural family, which also includes the spherical buckyballs. The ends of a nanotube might be capped with a hemisphere of the buckyball structure. Their name is derived from their size, since the diameter of a nanotube is on the order of a few nanometers (approximately 1/50,000th of the width of a human hair), while they can be up to several millimeters in length (as of 2008). Nanotubes are categorized as single-walled nanotubes (SWNTs) and multi-walled nanotubes (MWNTs).
The nature of the bonding of a nanotube is described by applied quantum chemistry, specifically, orbital hybridization. The chemical bonding of nanotubes is composed entirely of sp2 bonds, similar to those of graphite. This bonding structure, which is stronger than the sp3 bonds found in diamonds, provides the molecules with their unique strength. Nanotubes naturally align themselves into "ropes" held together by Van der Waals forces. Under high pressure, nanotubes can merge together, trading some sp² bonds for sp³ bonds, giving the possibility of producing strong, unlimited-length wires through high-pressure nanotube linking.
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