Concave

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Concave

Property that a curve is below a straight line connecting two end points. If the curve falls above the straight line, it is called convex.

Concave

Describing a curve segment whose ends fall below an arbitrarily set straight line. Concave properties are important to charting; for example, when tracking a stock market's performance, a dip in the chart with respect to the previous day's close followed by a rally going up to but not necessarily meeting that close may be described as a concave curve.
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The performance of threshing apparatus depends on the feed rate, concave clearance and cylinder speed (linear speed of rasp bars) [3].
For this purpose, some studies proposed using filler plates that have an evenly concave surface, whereas others proposed using filler plates with an angled profile [7].
In the field experiments, visually undamaged whole seeds obtained from all threshing treatments consisting of the combination of 3 cultivars, 3 beaters and 2 concaves were used.
No evident differences were found in terms of EC values that could indicate internal injury of the seeds among beaters, concaves and also their combinations.
He said he has seen an increase in the number of miners using the concaves with alloy-material.
So instead of 48 hours to replace the concaves, they have reduced that to 36 hours.
Despite all of the hi-tech gadgetry available we still have to use equipment made in 1900s to get the degree of accuracy needed in matching concaves.
These tools were made when every district had a cornmill, needing concaves able to handle hard, almost short grain kept in the stackyard for half the winter before threshing.
If a rock or other obstruction enters the threshing cylinder, the hydraulic cylinders holding the concaves in place automatically open to release the object.
The former Celtic striker is endorsing Concave, a revolutionary new boot.
The revolutionary new Concave boots provide extra protection against the injury which has cursed a string of England stars, including David Beckham and Wayne Rooney.
The revolutionary new Concave boots provide extra protection against the injury that has cursed a string of England stars, including David Beckham and Wayne Rooney.