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  2. Aspect ratio (image) - Wikipedia

    en.wikipedia.org/wiki/Aspect_ratio_(image)

    Common aspect ratios used in film and display images. The common film aspect ratios used in cinemas are 1.85:1 and 2.40:1. [1] Two common videographic aspect ratios are 4:3 (1. 3:1), [a] the universal video format of the 20th century, and 16:9 (1. 7:1), universal for high-definition television and European digital television.

  3. 1q21.1 duplication syndrome - Wikipedia

    en.wikipedia.org/wiki/1q21.1_duplication_syndrome

    1q21.1 duplication syndrome, also known as 1q21.1 microduplication, is an uncommon copy number variant associated with several congenital abnormalities, including developmental delay, dysmorphic traits, autism spectrum disorder, and congenital cardiac defects. [1]

  4. December 21 - Wikipedia

    en.wikipedia.org/wiki/December_21

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  5. 1q21.1 deletion syndrome - Wikipedia

    en.wikipedia.org/wiki/1q21.1_deletion_syndrome

    1q21.1 deletion syndrome is a rare aberration of chromosome 1.A human cell has one pair of identical chromosomes on chromosome 1.With the 1q21.1 deletion syndrome, one chromosome of the pair is not complete, because a part of the sequence of the chromosome is missing.

  6. Look-and-say sequence - Wikipedia

    en.wikipedia.org/wiki/Look-and-say_sequence

    All "atomic elements" (Where E k is included within the derivate of E k+1 except Np and Pu) [1]; Atomic number (n) Element name (E k) Sequence Decays into [5] Abundance 1 H 22 H ...

  7. PSR B1919+21 - Wikipedia

    en.wikipedia.org/wiki/PSR_B1919+21

    PSR B1919+21 is a pulsar with a period of 1.3373 seconds [4] and a pulse width of 0.04 seconds. Discovered by Jocelyn Bell Burnell on 28 November 1967, it is the first discovered radio pulsar. [5]

  8. SOD1 - Wikipedia

    en.wikipedia.org/wiki/SOD1

    SOD1 binds copper and zinc ions and is one of three superoxide dismutases responsible for destroying free superoxide radicals in the body. The encoded isozyme is a soluble cytoplasmic and mitochondrial intermembrane space protein, acting as a homodimer to convert naturally occurring, but harmful, superoxide radicals to molecular oxygen and hydrogen peroxide.