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  2. A Neurologist Explains Why You Can’t Get That Song Out of ...

    www.aol.com/neurologist-explains-why-t-song...

    An earworm happens when you have the “inability to dislodge a song and prevent it from repeating itself” in your head, explains Steven Gordon, M.D ., neurologist at UC Health and assistant ...

  3. Eyewall replacement cycle - Wikipedia

    en.wikipedia.org/wiki/Eyewall_replacement_cycle

    In meteorology, eyewall replacement cycles, also called concentric eyewall cycles, naturally occur in intense tropical cyclones, generally with winds greater than 185 km/h (115 mph), or major hurricanes ( Category 3 or above). When tropical cyclones reach this intensity, and the eyewall contracts are already small, some of the outer rainbands ...

  4. Two-stroke engine - Wikipedia

    en.wikipedia.org/wiki/Two-stroke_engine

    Two-stroke engine. A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft. A four-stroke engine requires four strokes of the piston to complete a power cycle in two crankshaft revolutions.

  5. Almost 20% of US adults say they cannot cope with an ... - AOL

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    Sometimes, on top of all the necessary bills we have to pay, emergencies expenses such as an unexpected car repair or a surprise medical bill can pop up. Don't miss. ... 2. Set up automatic ...

  6. No swabs: This is the safe way to clean your ears - AOL

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    Eosera Ear Wax MD Kit $ at Walgreens. These ear drops contain glycolic acid and sodium bicarbonate to soften and break down ear wax gently. To use, place a few drops in your ear, wait 15 minutes ...

  7. Split-single engine - Wikipedia

    en.wikipedia.org/wiki/Split-single_engine

    In internal combustion engines, a split-single design is a type of two-stroke where two cylinders share a single combustion chamber . The first production split-single engine was built in 1918 and the design was used on several motorcycles and cars until the mid-1950s, although Puch continued producing split-single engines for motorcycles until ...

  8. AOL Mail

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    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!

  9. Reed valve - Wikipedia

    en.wikipedia.org/wiki/Reed_valve

    The Swedish motorcycle company Husqvarna produced a two-stroke, 500 cc displacement single cylinder engine with a reed-valve controlled intake, one of the biggest in using this arrangement. Reed valves in two-stroke engines have been placed in the intake ports and also in controlling the intake to the crankshaft space.