What's the difference between joist and tailpiece?

Joist


Definition:

  • (n.) A piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed; -- called, according to its position or use, binding joist, bridging joist, ceiling joist, trimming joist, etc. See Illust. of Double-framed floor, under Double, a.
  • (v. t.) To fit or furnish with joists.

Example Sentences:

  • (1) This may be because the joists below are defective – it’s worth seeking professional advice in this instance.
  • (2) They are constructed using rows of thick wooden beams, called joists, topped by floorboards running at a right angle to the joists.
  • (3) The lines of nails on the boards indicate the position of the joists underneath.
  • (4) They unloaded bags, tools and two wheelie bins, which they carried (or wheeled) in through the fire escape, and large metal joists.

Tailpiece


Definition:

  • (n.) A piece at the end; an appendage.
  • (n.) One of the timbers which tail into a header, in floor framing. See Illust. of Header.
  • (n.) An ornament placed at the bottom of a short page to fill up the space, or at the end of a book.
  • (n.) A piece of ebony or other material attached to the lower end of a violin or similar instrument, to which the strings are fastened.

Example Sentences:

  • (1) 1H-NMR spectroscopy has been used to study the conformation and dynamics of the isolated tailpiece from human serum immunoglobulin M, a 22-residue peptide containing a single asparagine glycosylation site.
  • (2) A Ser-rich tailpiece (residues 1918-1938) is apparently nonhelical.
  • (3) The tailpiece sequence thus has profound effects on assembly, yet it is apparently unstructured and can be bisected without affecting its function.
  • (4) The other wing, and the plane's tailpiece, hang limp and useless.
  • (5) The anti-NF-L tailpiece antibody recognized only a limited number of sites along native NFs, but labeled reconstituted NF-L homopolymers uniformly and heavily.
  • (6) A centrally located highly alpha-helical domain of about 310 residues well-conserved in sequence principles and length is flanked by the highly variable sequences of the non-alpha-helical headpiece and tailpiece.
  • (7) The cell line is X63.653 transfected with the mu gene, whose tailpiece sequence was replaced with the transmembrane sequence of human EGF receptor to hold mu on the cell surface and whose CH1 sequence was removed to prevent mu from being retained in the endoplasmic reticulum.
  • (8) Our findings indicate that whereas anti-IFA recognizes the highly conserved rod domain, all the NF-specific antibodies, as well as Bodian's silver, react with the carboxy-terminal tailpiece of NF subunits.
  • (9) The sequence consolidates the structural principle in which an amino-terminal tailpiece of variable length is followed by a core built from four internally homologous segments for those proteins in the 35-40 kd range.
  • (10) Things have come on: the tailpiece and fins are now in place and the other wing has been unfurled.
  • (11) This suggests that the NF-L tailpiece extension is relatively inaccessible in native filaments, but is accessible in reconstituted homopolymers.
  • (12) We have also generated polyclonal antibodies against this peptide and attempted to localize this portion of the tailpiece along desmin IFs by immunological procedures.
  • (13) The actin-activated Mg2(+)-ATPase activity of myosin II from Acanthamoeba castellanii is regulated by phosphorylation of 3 serines in its 29-residue, nonhelical, COOH-terminal tailpiece, i.e., serines-1489, -1494, and -1499 or, in reverse order, residues 11, 16, and 21 from the COOH terminus.
  • (14) These results suggest that at least 18 of the 29 residues in the nonhelical tailpiece of the heavy chain are not required for either actin-activated Mg2(+)-ATPase activity or filament formation and that phosphorylation of Ser-1489 is sufficient to regulate the actin-activated Mg2(+)-ATPase activity of myosin II.
  • (15) The protease-sensitive tailpiece of protein II is very short and lacks the phosphorylatable tyrosine present in the larger tail domains of p36 and p35.
  • (16) Antibodies directed against the tailpiece extensions of NF-H and NF-M labeled the sidearms of native NFs and reconstituted filaments containing those two polypeptides, but not the backbone of the filaments.
  • (17) Thus, a +1 change in the C-terminal region of the albumin molecule produces a variant with the same electrophoretic mobility as an alloalbumin with a +2 substitution in the central domain, suggesting a higher degree of exposure to the solvent of the C-terminal tailpiece.
  • (18) A unique non-helical tailpiece composed of 72 amino acid residues marks the C-terminus of this neuronal myosin isoform.
  • (19) They were truncated at various restriction sites and expressed in Escherichia coli, yielding a series of mutant myosin rods with or without the COOH-terminal tailpiece and with serial deletions from their NH2-termini.
  • (20) Antibodies against a synthetic peptide corresponding to the 21 adjacent amino acids at the beginning of the non-helical tailpiece, which include the three regulatory phosphorylatable serines, had no effect on either activity.