The World Health Organization has approved a version of a widely used cholera vaccine that could help address a surge in cases that has depleted the global vaccine stockpile and left poorer countries scrambling to contain ...
16 hours ago
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Barré syndrome (GBS) is a rare immune-mediated peripheral neuropathy that can cause permanent disability and even death and be quite severe to manage. In this acute disorder, which typically triggers after a respiratory ...
Apr 11, 2024
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A new Emory University study has found that adults exposed to high levels of air pollution were at an increased risk of developing Alzheimer's disease.
Apr 11, 2024
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Changes in personality, behavior and language are hallmarks of frontotemporal dementia (FTD), the most common form of dementia in patients under the age of 65, which is associated with degeneration of the frontal and temporal ...
Apr 5, 2024
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The model blood vessel was made using 3D bioprinting to help investigate how weightlessness changes the cardiovascular systems of astronauts in orbit.
Apr 4, 2024
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There has been a sharp increase in the number of people in Japan suffering with the rare but dangerous bacterial condition, streptococcal toxic shock syndrome (STSS). According to reports, cases of this potentially fatal ...
Apr 4, 2024
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It's taboo to consume seaweed soup before exams in Korea since it can lead to failing the exam. The belief is rooted in the idea that the slippery nature of seaweed may cause people to slip and falter during the test. The ...
Mar 26, 2024
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The survival of neurons, unlike most other cells in the body, depends largely on the energy provided by mitochondria, intracellular organelles that contain their DNA to function properly.
Mar 25, 2024
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New research from scientists at the Wu Tsai Neurosciences Institute at Stanford University has identified a key driver of myelination, the formation of protective fatty sheaths around nerve fibers.
Mar 25, 2024
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Chronic obstructive pulmonary disease (COPD) is a chronic lung disease with irreversible airflow limitation and a leading cause of death worldwide. COPD is characterized by chronic bronchitis and emphysema and is associated ...
Mar 21, 2024
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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
