A new dust testing methodology developed by University of Queensland researchers offers workers better protection from diseases such as black lung and silicosis. The research is published in the journal Minerals.
Jan 9, 2024
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A key takeaway from first-year biology is that mitochondria are the powerhouses of cells—it's the thing most people know about them. However, mitochondria perform a large array of functions for cells beyond generating the ...
Oct 25, 2023
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Neuroscientists at the Flatiron Institute in New York City and their colleagues have made a big breakthrough using one of the world's smallest brains.
Sep 28, 2023
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Scientists have created one of the most detailed 3D images of the synapse, the important juncture where neurons communicate with each other through an exchange of chemical signals. These nanometer-scale models will help scientists ...
Jun 14, 2023
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A common cause of myocardial infarction and stroke is the rupture of atherosclerotic plaques. The exact location of plaque ruptures has previously been unknown, but now researchers at Lund University have mapped this. The ...
Jun 5, 2023
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EPFL scientists have reproduced key features of pathological protein aggregates found in the brain of patients with Lou Gehrig's disease and other neurological diseases, providing insight into the underlying mechanism and ...
Jun 5, 2023
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It is 7 am, the alarm clock rings—you open your eyes, swing your legs out of bed, give a talk at work, play a tennis match in the evening. Billions of nerve cells that make up the gray matter in our brain allow us to perform ...
May 25, 2023
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Strategies to treat pain without triggering dangerous side effects such as euphoria and addiction have proven elusive. For decades, scientists have attempted to develop drugs that selectively activate one type of opioid receptor ...
May 3, 2023
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The bones of the face and skull can be affected due to a wide range of conditions, including cleft palate defects, traumatic injuries, cancer, and bone loss from dentures. Although bone replacements are routinely used to ...
Feb 22, 2023
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JoAnn Buchanan, Ph.D., was deep into the data. One click at a time, she scanned through the branching, twisting 3D shapes of mouse brain cells on her computer screen. Then Buchanan, a scientist at the Allen Institute, saw ...
Nov 28, 2022
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An electron microscope is a type of microscope that uses a particle beam of electrons to illuminate a specimen and create a highly-magnified image. Electron microscopes have much greater resolving power than light microscopes that use electromagnetic radiation and can obtain much higher magnifications of up to 2 million times, while the best light microscopes are limited to magnifications of 2000 times. Both electron and light microscopes have resolution limitations, imposed by the wavelength of the radiation they use. The greater resolution and magnification of the electron microscope is because the wavelength of an electron; its de Broglie wavelength is much smaller than that of a photon of visible light.
The electron microscope uses electrostatic and electromagnetic lenses in forming the image by controlling the electron beam to focus it at a specific plane relative to the specimen. This manner is similar to how a light microscope uses glass lenses to focus light on or through a specimen to form an image.
This text uses material from Wikipedia, licensed under CC BY-SA
