(v. t.) To wind off; to loose or separate, as what or convolved; to untwist; to untwine; as, to unwind thread; to unwind a ball of yarn.
(v. t.) To disentangle.
(v. i.) To be or become unwound; to be capable of being unwound or untwisted.
Example Sentences:
(1) Unlike cisplatin, bis(platinum) complex binding does not unwind supercoiled DNA.
(2) Of the 47 compounds that were positive or equivocal in the alkaline unwinding assay, only carbon tetrachloride and prednisolone were negative in the mouse lymphoma assay, while 12 of the 19 compounds that were negative in the alkaline unwinding assay were positive in the mouse lymphoma assay.
(3) As suggested from the high level of sequence similarity of these viral proteins with the recently described superfamilies of helicase-like proteins (3-5), the NTBM-containing cylindrical inclusion (CI) protein from plum pox virus (PPV), which belongs to the potyvirus group of positive strand RNA viruses, is shown to be able to unwind RNA duplexes.
(4) This limited unwinding of heterologous duplex DNA, termed heterologous unwinding, was detected within 30 seconds and reached a steady state within a few minutes.
(5) Comparison of the superhelix densities obtained by both methods permits a calculation of an unwinding angle for ethidium.
(6) The exposure of the cells from mussel haemolymph and from mouse L1210 to a genotoxic compound such as dimethylsulfate results in DNA damage and consequently in a reduction of the unwinding time.
(7) As for unwinding, the rituals of it give a satisfying end to the shape of my day.
(8) Chromosome replication appears to initiate in E. coli when the dnaA boxes in oriC become filled with DnaA protein, which could simultaneously mediate both the unwinding of the origin for the start of polymerization and the attachment of oriC to the cell envelope (Bramhill and Kornberg, 1988; Løbner-Olesen et al., 1989; Pierucci et al., 1989).
(9) The protein fraction containing the 93 000 dalton protein had considerable unwinding activity, depressing the melting temperature of poly(dA-dT) by 39 degrees C. The protein fraction containing the bulk of the 35 000 dalton protein did not have unwinding activity.
(10) The required cellular protein may be a eukaryotic single-stranded-DNA-binding protein (SSB), since unwinding of the template is also observed when Escherichia coli SSB is substituted for the HeLa protein fraction.
(11) Evidence is presented that the first step in initiation of SV40 DNA replication involves the specific binding of T antigen to the origin, followed by the local unwinding of the two strands of the template.
(12) Complex formation leads to very little, if any, unwinding of the duplex.
(13) It is suggested that the gene D product may function in replicative form DNA unwinding to expose the template for transcription.
(14) Topotecan (SK&F 104864) is a novel antitumor agent whose mechanism of action is inhibition of the DNA unwinding protein topoisomerase I.
(15) We used an RNA unwinding assay to compare the activities of these factors from the different species.
(16) The extension and unwinding of the DNA helix brought about by the intercalating chromophore of the dye molecules are not requirements for the entrapment process.
(17) Second, mutant T antigens with impaired ATPase function also showed a reduced DNA unwinding activity.
(18) Analysts at UBS said: “After Friday’s ... market plunge, many turned to the authorities for support measures as concerns rose that the rapid unwinding of margin trades was fuelling the sell-off.
(19) It is proposed that the DNA-unwinding activity causes the efficient recombination, DNA repair, and SOS induction (after application of nalidixic acid) in recD mutants.
(20) But within minutes of the five-year-old video of Obama being released by the Daily Caller website on Tuesday night , the "exclusive" began to unwind amid criticism that much of it had been reported at the time and the content was anything but explosive.
Upwind
Definition:
(v. t.) To wind up.
Example Sentences:
(1) Fifty-eight households were studied in the Red Pond community, the site of the established smelter and several backyard smelters, and 21 households were studied in the adjacent, upwind Ebony Vale community in Saint Catherine Parish, Jamaica.
(2) triseriatus and Haemagogus equinus), were used in a flight chamber in which females must fly upwind against the direction of the sound waves and around the ultrasonic devices to reach a trap downwind of a source of human breath and skin emanations.
(3) Samples of the gaseous effluent were collected inside the aeration building, inside the building's stack, 300 meters upwind (background sampler), and 300 meters downwind (test sampler), using Andersen samplers.
(4) Upwind the number of yeast colony-forming units was zero.
(5) Surely anyone in their right mind is thinking about how we can reduce pollution but they want to build another runway here, upwind of London ?
(6) A 6.1 m long suction trap, with multiple air inlets located on its upwind, top, ends and downwind sides, was placed on a freely pivoting raft moored in a large borrow pit.
(7) The proportion of mice showing estrus when placed 2 upwind was significantly less than that of mice downwind or of mice beloii but not different from that of females remote from males.
(8) The concentrations of 15 polycyclic aromatic hydrocarbons (PAH) were determined in ambient air particles sampled at four sites in an urban and industrialized area in The Netherlands, and at one site near the coast (generally upwind).
(9) Fifty percent of an Amblyomma variegatum female population were able to find upwind-positioned targets containing the synthetic aggregation-attachment pheromone of this species or the pheromone component o-nitrophenol alone.
(10) However, if the air current carries sex pheromone, then upwind movement is elicited.
(11) Male and female Manduca sexta flew upwind in response to the odor of female sex-pheromone gland extract or fresh tobacco leaf respectively, and generated very similar zigzagging tracks along the odor plume.
(12) Take-off was significantly orientated upwind during the period when swormlure-4 was added to the airstream, and significantly orientated downwind in the period after the addition of swormlure-4.
(13) Upwind of the flame-torch exposure the level was below the exposure limit, whereas downwind lead concentrations of up to ten times the exposure limit were observed.
(14) These results indicate that two peripheral processes related to excessive concentration, complete adaptation of antennal neurons, or merely the attenuation of fluctuations in burst frequency, are important determinants of when upwind progress by a moth flying in a pheromone plume stops and changes to station keeping.
(15) We suggest that these basal crosslinks support the long vestibular stereocilia rendering them more rigid, and that the upwind pointing crosslinks are responsible for the initiation of sensory transduction.
(16) Three responses to simulated yaw were noted: Yaw-correcting upwind turning tendencies (Figs.
(17) Trends from 1979 to 1987 were studied for the number of days per year ozone exceeded the NAAQS standard, the second-highest ozone level observed per year, and the first quartile summertime average ozone observed, as well as the mean difference between the ozone level observed downwind and upwind of the city.
(18) Such a trend could not be found for the total number of colony-forming units (yeasts, molds, and bacteria) although the upwind concentration was slightly lower than the downwind concentration.
(19) The particles sampled upwind dominated the mutagenicity in the area; in contrast to the locally emitted particles, their effects decreased in the presence of S9 fraction.
(20) When tobacco hornworm moths (Manduca sexta) are tested in a wind tunnel with a source of female pheromones upwind, males but not normal females show pheromone-modulated anemotaxis and a characteristic mate-seeking behavioural sequence.