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2. Take 20% Off Raycon Earbuds, Headphones and Speakers ... - AOL

   www.aol.com/entertainment/20-off-raycon-earbuds...

   These Basic Earbuds. The Work Earbuds Classic. Raycon. For everyday wear that’s easy to take in and out, these buds are the perfect pick! See it! Get The Work Earbuds Classic (originally $120 ...

3. Beet Juice May Help Heart Health for Post-Menopausal Women - AOL

   www.aol.com/beet-juice-may-help-heart-050000935.html

   Nadine Greeff/ Stocksy United. A new study showed drinking beet juice daily may improve heart health among postmenopausal women. Beet juice stimulates the production of nitric oxide, which ...

4. Nitrate test - Wikipedia

   en.wikipedia.org/wiki/Nitrate_test

   A common nitrate test, known as the brown ring test [2] can be performed by adding iron (II) sulfate to a solution of a nitrate, then slowly adding concentrated sulfuric acid such that the acid forms a layer below the aqueous solution. A brown ring will form at the junction of the two layers, indicating the presence of the nitrate ion. [3]

5. Ray J - Wikipedia

   en.wikipedia.org/wiki/Ray_J

   Sanctuary. Atlantic. Elektra. EastWest. Musical artist. Website. rayj .com. William Ray Norwood Jr. (born January 17, 1981), [1] known professionally as Ray J, is an American R&B singer, songwriter, television personality, and actor. Born in McComb, Mississippi, and raised in Carson, California, he is the younger brother of singer and actress ...

6. Measurement microphone calibration - Wikipedia

   en.wikipedia.org/wiki/Measurement_microphone...

   A pistonphone is an acoustical calibrator (sound source) that uses a closed coupling volume to generate a precise sound pressure for the calibration of measurement microphones. The principle relies on a piston mechanically driven to move at a specified cyclic rate, pushing on a fixed volume of air to which the microphone under test is coupled.

7. Perceptual Evaluation of Audio Quality - Wikipedia

   en.wikipedia.org/wiki/Perceptual_Evaluation_of...

   Perceptual Evaluation of Audio Quality (PEAQ) is a standardized algorithm for objectively measuring perceived audio quality, developed in 1994–1998 by a joint venture of experts within Task Group 6Q of the International Telecommunication Union's Radiocommunication Sector . It was originally released as ITU-R Recommendation BS.1387 in 1998 and ...