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Treena Hein

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Articles

Why Ball Splines Matter: The Motion Control Technology Behind Precision Machines

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By Treena Hein Verified
| Machine Design Verified
The ball spline, now 55 years old, is a motion component that has stood the test of time but has not stood still. Indeed, in recent years, this innovation has evolved with sizes and designs that allow it to take on very demanding applications—and those applications continue to expand with advances in groove profiles, weight reduction and more. The  was developed in 1971 by THK as a precursor to linear motion guides.
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Canada tightens broiler farm biosecurity with mandatory entry barriers

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By Treena Hein Verified
| foodagribusiness.world
How the entry barrier requirement changes Previously, all Canadian broiler barns were required to feature only a line on the floor between the Controlled Access Zone (CAZ, immediate entry of barn) and the Restricted Area (RA, interior of barn). Now, a barrier must be installed, high enough to be stepped over or sat upon, leaving outer footwear on one side and pivoting the body to put on barn boots.
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Smarter heat stress detection in dairy cattle

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By Treena Hein Verified
| foodagribusiness.world
Farmers should not let cows reach a score of 3 or 4, with 3 (severe heat stress) indicated by one or more of >120 BPM, open-mouth breathing or panting, observable abdominal effort to breathe, drooling, and likely lethargy and low head carriage, even if approached. These symptoms deepen at a score of 4, extreme heat stress, with most animals at this stage also weak, stumbling or lying down near death.
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