What's the difference between parr and purr?

Parr


Definition:

  • (n.) A young salmon in the stage when it has dark transverse bands; -- called also samlet, skegger, and fingerling.
  • (n.) A young leveret.

Example Sentences:

  • (1) Unlike many music hack days, this is a commercial contest: the winning hack – as judged by Slash, BitTorrent founder Bram Cohen and investor Ben Parr – will earn its creator an autographed guitar, $1,000 and “the chance to have Slash use the winning hack with the release of his new album”.
  • (2) The sale should be stopped unless the bank’s special status is protected.” Doug Parr, policy director at Greenpeace, added: “A Green Investment Bank that is privatised needs to have its green credentials written in stone.
  • (3) The wave functions of the bases are computed by Pariser--Parr--Pople's method taking into account all the singly excited configurations.
  • (4) Friend leukemia complex (FLC), and Rowson-Parr virus (RPV) infections of donor mice depress the production of background antibody-forming cells by splenocytes cultured in the absence of specific antigenic stimulation.
  • (5) Writing about Tulsa in The Photobook Volume 1 , authors Martin Parr and Gerry Badger say that the "incessant focus on the sleazy aspect of the lives portrayed, to the exclusion of almost anything else – whether photographed from the 'inside' or not – raises concerns about exploitation and drawing the viewer into a prurient, voyeuristic relationship with the work."
  • (6) Serum cortisol concentrations were measured in juvenile Atlantic salmon (Salmo salar L.) undergoing the parr-smolt transformation in fresh water, at either 1 year (S1 population) or 2 years (S2 population) after hatching.
  • (7) The Nigeria international won a penalty in the dying minutes when he was brought down by Jonathan Parr, enabling Hatem Ben Arfa to complete the scoring.
  • (8) Craig Parr, secondary school teacher, London I think this is partly about ensuring teachers have the freedom to get on with the job.
  • (9) To obtain more information on the role of prolactin and growth hormone during the parr-smolt transformation of Atlantic salmon, a population of fish in fresh water was sampled from January to June during two consecutive years.
  • (10) Dr Doug Parr, chief scientist at Greenpeace UK, said: "We're pleased to see the growing recognition that our inefficient, centralised electricity grid is losing over half of its energy in waste heat.
  • (11) Doug Parr, Greenpeace UK's chief scientist, welcomed the proposals.
  • (12) Increased glycogen and lipid breakdown, and concomitant decreased glycogen and fatty acid synthesis would contribute to the lipid and glycogen depletion observed in salmonid species undergoing parr-smolt transformation.
  • (13) The status of circulating growth hormone and prolactin during the parr-smolt transformation and during seawater adaptation of coho salmon (Oncorhynchus kisutch) was investigated in relation to changes in plasma levels of thyroxine, triiodothyronine, and cortisol, and in hypoosmoregulatory ability.
  • (14) In the mature male parr, plasma GH levels increased after 24 hr, when the levels were almost five times those of the freshwater controls.
  • (15) They seriously threatened only twice – David de Gea saving in a cluttered first half when Chris Smalling diverted a Jonathan Parr header goalwards and then denying Cameron Jerome, on as a substitute, an equaliser shortly after Van Persie's goal – and remain two points above the bottom three.
  • (16) With a foreword by Martin Parr , the man who matters most in the world of the photobook, it arrived in Arles with buzz attached from the recent photobook festival at Bristol co-curated by Parr.
  • (17) Evidence of the core domain-domain interaction to stabilize the Fe-S bond, combined with the kinetic studies by G. R. Parr and H. Taniuchi, has led to a model of two alternative folding orders of the core domains for the horse type I complex: domain 1----3----2----4 or 1----2----3----4.
  • (18) To elucidate the ultrastructural modifications of the gill epithelium during smoltification, gills of the Atlantic salmon (Salmo salar) were examined by electron microscopy at three stages of this process, which were defined as follows: "parrs" were freshwater fish that had not yet started their transformation; "freshwater smolts" were freshwater fish that were ready to enter seawater; and "seawater smolts" were smolts that had been transferred from fresh water and maintained for 4 days in seawater (35%).
  • (19) T4 and cortisol treatment stimulated lipid mobilization in parr.
  • (20) These results implicate thyroid hormones in the expression of adult forms of hemoglobin during the parr to smolt transformation of juvenile salmon.

Purr


Definition:

  • (v. i. & t.) To murmur as a cat. See Pur.
  • (n.) The low murmuring sound made by a cat; pur. See Pur.

Example Sentences:

  • (1) Expression of glyA, encoding serine hydroxymethyltransferase activity, was elevated in a purR mutant compared with a wild-type strain.
  • (2) A bulldozer on rail wheels purrs up on the other line and begins pawing at the stones.
  • (3) At the place where adorable meets obnoxious and the purr becomes a shriek, Leslie Mann is waiting to unload a howitzer of funny in your face.
  • (4) Nitrogen control was found to be mediated by the glnLG gene products, and purine repression required a functional purR gene product.
  • (5) Though I could have sworn that you did actually purr,” Dave recalled.
  • (6) AMP but not GMP is needed for binding, and purR mutants are deficient in the binding substance.
  • (7) The PurR protein bound specifically to a DNA fragment carrying the glyA control region, as determined by gel retardation.
  • (8) Cross pathway regulation of pyrC by PurR may provide one mechanism to coordinate synthesis of purine and pyrimidine nucleotides.
  • (9) "Oh, the lords absolutely love Justin," purrs one senior peer.
  • (10) Both operator constitutive and repressor type (purR) mutations have been identified.
  • (11) The purR product functions in the common control of several genetically distinct enzymes that participate before the formation of IMP.
  • (12) The regulation of the guanine operon is regulated by some other mechanism independent of purR.
  • (13) A highly conserved sequence in the promoter regions of these two genes is similar to the pur operator, which is the binding site for the purine repressor (PurR).
  • (14) Gene purB is regulated threefold by the purine pool and purR.
  • (15) The purEK operon is regulated by the purR gene product, and a purR regulatory-protein-binding site related to the sequences found in other pur loci was identified in the purEK operon control region.
  • (16) In the film, there is a killingly funny vignette in which Joshua McGuire’s Ruskin, who cannot pronounce his Rs, purrs with self-satisfaction at his own ideas – the critic who got the cream.
  • (17) Analysis of a purR-lacZ transcriptional fusion indicated that purR expression is autoregulated.
  • (18) Mutations that changed the binding sequence toward the consensus sequence had no significant effect on either PurR binding or purine-mediated repression.
  • (19) Site-directed mutagenesis was used to change the PurR binding site in the control region of a glyA-lac gene fusion.
  • (20) Two independent purR mutations were isolated which abolished repression of purF and purF-lacZ.