Published on: 2025-06-11 15:34:09
Acclimation of Osmoregulatory Function in Salmon Download a printable version of this essay. As you know, salmon spend most of their life in the open ocean, where they reach sexual maturity, but lay their eggs gravel beds at the upper reaches of (freshwater) streams. When the eggs hatch, the young salmon spend several months migrating downstream to the ocean where they remain for some 3-5 years. When mature, the adult salmon return to mouth of stream where they hatched (they remember the taste
Keywords: body fluids ocean salmon water
Find related items on AmazonPublished on: 2025-07-05 07:08:02
They started by imagining a very fine grid superimposed on their fluid. They then computed how long particles spent in each square of the grid, on average. In some squares, the fluid acted like a rushing river: Particles tended to sweep straight across the square, spending only a brief period of time there. In other squares, small eddies might push particles around, slowing them down. The problem was that the numbers the mathematicians calculated might vastly differ from square to square — reve
Keywords: fluid grid particles said square
Find related items on AmazonPublished on: 2025-08-14 09:11:16
$\begingroup$ The popularity of the equal transit-time fallacy is a bit more complicated than a mistake spreading from a single source. It is simple, intuitively appealing (blowing over an airfoil is often invoked, along with an erroneous picture of flow lines around an asymmetric wing), and gets things done quickly. Just like the "explanation" of seasons by the Earth's changing distance to the Sun, or textbook pseudo-explanations of history, like the "crisis" over the discovery of irrationals,
Keywords: bernoulli explanation fluid pressure surface
Find related items on AmazonPublished on: 2025-09-18 05:49:02
Encased in the skull, perched atop the spine, the brain has a carefully managed existence. It receives only certain nutrients, filtered through the blood-brain barrier; an elaborate system of protective membranes surrounds it. That privileged space contains a mystery. For more than a century, scientists have wondered: If it’s so hard for anything to get into the brain, how does waste get out? The brain has one of the highest metabolisms of any organ in the body, and that process must yield by-p
Keywords: blood brain csf fluid vessels
Find related items on AmazonPublished on: 2025-09-26 08:31:47
Encased in the skull, perched atop the spine, the brain has a carefully managed existence. It receives only certain nutrients, filtered through the blood-brain barrier; an elaborate system of protective membranes surrounds it. That privileged space contains a mystery. For more than a century, scientists have wondered: If it’s so hard for anything to get into the brain, how does waste get out? The brain has one of the highest metabolisms of any organ in the body, and that process must yield by-p
Keywords: blood brain csf fluid vessels
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