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  2. Hairpin lace - Wikipedia

    en.wikipedia.org/wiki/Hairpin_lace

    Hairpin lace is a lace-making technique that uses a crochet hook and two parallel metal rods held at the top and the bottom by removable bars. Historically, a metal U-shaped eponymous hairpin was used. Hairpin lace is formed by wrapping yarn around the prongs of the hairpin lace loom to form loops, which are held together by a row of crochet ...

  3. Hairpin - Wikipedia

    en.wikipedia.org/wiki/Hairpin

    A hairpin or hair pin is a long device used to hold a person's hair in place. It may be used simply to secure long hair out of the way for convenience or as part of an elaborate hairstyle or coiffure. The earliest evidence for dressing the hair may be seen in carved "Venus figurines" such as the Venus of Brassempouy and the Venus of Willendorf.

  4. Hairpin technology - Wikipedia

    en.wikipedia.org/wiki/Hairpin_technology

    Hairpin technology is a winding technology for stators in electric motors and generators and is also used for traction applications in electric vehicles. In contrast to conventional winding technologies, the hairpin technology is based on solid, flat copper bars which are inserted into the stator stack.

  5. Stem-loop - Wikipedia

    en.wikipedia.org/wiki/Stem-loop

    Stem-loop. Stem-loop intramolecular base pairing is a pattern that can occur in single-stranded RNA. The structure is also known as a hairpin or hairpin loop. It occurs when two regions of the same strand, usually complementary in nucleotide sequence when read in opposite directions, base-pair to form a double helix that ends in an unpaired loop.

  6. Beta hairpin - Wikipedia

    en.wikipedia.org/wiki/Beta_hairpin

    The beta hairpin (sometimes also called beta-ribbon or beta-beta unit) is a simple protein structural motif involving two beta strands that look like a hairpin. The motif consists of two strands that are adjacent in primary structure , oriented in an antiparallel direction (the N-terminus of one sheet is adjacent to the C-terminus of the next ...

  7. Bobby pin - Wikipedia

    en.wikipedia.org/wiki/Bobby_pin

    Used with. hair. A bobby pin (US English, known as a kirby grip or hair grip in the United Kingdom) is a type of hairpin, usually of metal or plastic, used in coiffure to hold hair in place. It is a small double-pronged hair pin or clip that slides into hair with the prongs open and then the flexible prongs close over the hair to hold it in place.

  8. Trinucleotide repeat expansion - Wikipedia

    en.wikipedia.org/wiki/Trinucleotide_repeat_expansion

    hide. A trinucleotide repeat expansion, also known as a triplet repeat expansion, is the DNA mutation responsible for causing any type of disorder categorized as a trinucleotide repeat disorder. These are labelled in dynamical genetics as dynamic mutations. [1] Triplet expansion is caused by slippage during DNA replication, also known as "copy ...

  9. trp operon - Wikipedia

    en.wikipedia.org/wiki/Trp_operon

    Sequence 2 is then free to hybridize with sequence 3 to form the 2–3 structure, which then prevents the formation of the 3–4 termination hairpin, which is why the 2–3 structure is called an anti-termination hairpin. In the presence of the 2–3 structure, RNA polymerase is free to continue transcribing the operon. Mutational analysis and ...