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2. Swing (seat) - Wikipedia

   en.wikipedia.org/wiki/Swing_(seat)

   Tire swing Canopy swing. Tire swings are a form of swing made from a whole tire. These are often simply a new or used tire hanging from a tree on a rope. On commercially-developed playground swing sets, oversized new tires are often reinforced with a circular metal bar to improve safety and are hung on chains from metal or wooden beams.

3. Railway coupling - Wikipedia

   en.wikipedia.org/wiki/Railway_coupling

   As of 2020 Wabtec is working on an Digital automatic coupling (DAC) based the Schwab coupler, a possible replacement of the screw couplers in the European rail freight service. [33] The coupler is able to handle tensile forces up to 1500 kN and compressive forces up to 2000 kN and is therefore one of the strongest couplers ever designed for ...

4. Mechanics of Oscar Pistorius's running blades - Wikipedia

   en.wikipedia.org/wiki/Mechanics_of_Oscar...

   Research was conducted in Össur's Iceland lab using a pressure-sensitive treadmill and film at 500 fps to measure the blade strike, and produced a spike pad which includes a midsole of two machine-molded pieces of foam of different densities to cushion impact, with a carbon fibre plate on the bottom. The developers attached the pad with ...

5. AOL Mail

   mail.aol.com/?icid=aol.com-nav

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. Check valve - Wikipedia

   en.wikipedia.org/wiki/Check_valve

   A swing check valve (or tilting disc check valve) is a check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle.

7. Your Body Ages Rapidly In Your 40s And 60s. Doctors Say ... - AOL

   www.aol.com/body-ages-rapidly-40s-60s-130400672.html

   A Stanford Medicine study found that human aging speeds up at 44 and 60. Here, doctors share how to quell it by cutting alcohol, strength training, and more.