Diseases, Conditions, Syndromes

Abnormalities detected on brain MRI of COVID-19 patients in ICU

(HealthDay)—Among patients with COVID-19 pneumonia in the intensive care unit (ICU) with neurological symptoms, 44 percent of those undergoing magnetic resonance imaging (MRI) have acute findings, according to a study published ...

Genetics

APOE4 triggers early breakdowns in the blood-brain barrier

New USC research reveals how APOE4, a genetic culprit for Alzheimer's disease, triggers leaks in the brain's plumbing system, allowing toxic substances to seep into the brain areas responsible for memory encoding and other ...

Oncology & Cancer

A promising new treatment for recurrent pediatric brain cancer

Two pediatric brain cancers that are challenging to treat if they recur, medulloblastoma and ependymoma, are the target of a clinical trial using a new type of therapy. A multi-institutional, international team led by researchers ...

Medical research

Can stem cells treat COVID-19?

Niels-Bjarne Woods, a researcher at Lund University in Sweden, has developed lung-specific mesenchymal stem cells to treat inflammation of the lungs and fibrosis. This research now may be the needed breakthrough for treatment ...

Medical research

Sensor detects biomarker of early-stage multiple sclerosis

Researchers at the Federal University of São Carlos (UFSCar) in Sorocaba (state of São Paulo, Brazil) have developed a technique to diagnose early-stage multiple sclerosis, a disease of the central nervous system, and distinguish ...

Medical research

Researchers build micro-device to detect bacteria, viruses

Engineering researchers developed a next-generation miniature lab device that uses magnetic nano-beads to isolate minute bacterial particles that cause diseases. Using this new technology improves how clinicians isolate drug-resistant ...

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Fluid

In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress, no matter how small. Fluids are a subset of the phases of matter and include liquids, gases, plasmas and, to some extent, plastic solids.

In common usage, "fluid" is often used as a synonym for "liquid", with no implication that gas could also be present. For example, "brake fluid" is hydraulic oil and will not perform its required function if there is gas in it. This colloquial usage of the term is also common in medicine and in nutrition ("take plenty of fluids").

Liquids form a free surface (that is, a surface not created by the container) while gases do not. The distinction between solids and fluid is not entirely obvious. The distinction is made by evaluating the viscosity of the substance. Silly Putty can be considered to behave like a solid or a fluid, depending on the time period over which it is observed. It is best described as a viscoelastic fluid. There are many examples of substances proving difficult to classify. A particularly interesting one is pitch, as demonstrated in the pitch drop experiment currently running at the University of Queensland.

This text uses material from Wikipedia, licensed under CC BY-SA