(n.) A trough or sluice having cleats, grooves, or steps across the bottom for holding quicksilver and catching particles of gold when auriferous earth is washed; also, one of the cleats, grooves, or steps in such a trough. Also called ripple.
Example Sentences:
(1) I'd wake up to a compact mirror held to my mouth, and someone riffling through the knicker drawer for the will.
(2) Even as a child, Lauren, the third of four children, had a fascination with clothes and their ability to transform people: he emulated the preppy look of New York’s rich kids and would later riffle through thrift shops for authentically distressed denim, cowboy boots and leather jackets.
(3) "I hope there is no return to the spirit of loadsamoney heartlessness – figuratively riffling banknotes under the noses of the homeless – and I hope that this time the Gordon Gekkos of London are conspicuous not just for their greed – valid motivator though greed may be for economic progress – as for what they give and do for the rest of the population, many of whom have experienced real falls in their incomes over the last five years."
(4) Each stream was divided into pool and riffle sections that were colonized by communities of periphyton and invertebrates.
(5) The 488-m long stream was composed of mud-bottomed pools alternating with gravel riffles.
(6) Its use is demonstrated with a comparison of biomass and neuromass distributions for a stream riffle ecosystem in the Huron River, southeastern Michigan.
(7) The vaccine failed to protect against a highly virulent form of E coli 06 (Riffle), possibly because the amount of antibody to its lipopolysaccharide was inadequate.
(8) I searched for some explanation for this overweening neediness, riffling the pages with rising desperation.
Trough
Definition:
(n.) A long, hollow vessel, generally for holding water or other liquid, especially one formed by excavating a log longitudinally on one side; a long tray; also, a wooden channel for conveying water, as to a mill wheel.
(n.) Any channel, receptacle, or depression, of a long and narrow shape; as, trough between two ridges, etc.
Example Sentences:
(1) These observations were confirmed by the killing curves in pooled serum obtained at peak and trough levels.
(2) Plasma aldosterone peaked (p < 0.05) at 22 hours after operation, and argine vasopressin peaked (p < 0.05) at two hours and then declined (p < 0.05) to a trough at 24 hours.
(3) Our observations demonstrated that echographic coaptation of the aortic valve leaflets coincides with the trough of the aortic pressure incisura and the onset of A2.
(4) The goal of the expedition, led by Prof Ken Takai of the Japan Agency for Marine-Earth Science and Technology, was to study the limits of life at deep-sea vents in the Cayman Trough as part of a round-the-world voyage of discovery by the research ship RV Yokosuka .
(5) IDDM in Canterbury, New Zealand, presents in cycles of incidence peaks and troughs, each spanning 2-3 yr.
(6) No IgE circadian rhythm was validated in healthy children while a large amplitude (approximately equal to 30% of the 24 hours mean) circadian rhythm with 2 diurnal peaks and a nocturnal trough was demonstrated (P less than 0.0023) in the asthmatics.
(7) Trough levels of LH, however, are dependent on the frequency of LHRH-induced pulsatile LH secretion.
(8) Appropriate conditions for administering the drug by intravenous drip infusion to neonates and infants at ages of more than 1 week were investigated taking observed blood levels and achieved peak levels and trough levels calculated using the one-compartment open model into account.
(9) Dose limiting toxicities were observed in 9 of 10 patients with 12-h trough piritrexim concentrations greater than 0.5 microM, whereas only 2 of 7 patients with trough concentrations less than 0.5 microM experienced dose limiting toxicities.
(10) Both free and luciferase-bound B show similar negative circular dichroism in the region 330-475 nm with troughs at 375 and 380 nm, respectively.
(11) Whole blood steady-state trough concentrations of cyclosporine were measured by radioimmunoassay (RIA) and TDx assays employing monoclonal antibodies in 82 samples from 39 renal transplant patients.
(12) Regression analysis also showed a strong relationship between the area under the curve (AUC) from time 0 to 11 hours after the initial dose and the trough at steady state (r = 0.86).
(13) algebraic sum of these three cosine functions yielded a circadian waveform with peak-times occurring near 0300 and 1130 hr and a trough-time about 2200 hr.
(14) Group I represented the modified "over-the-top" technique with a deep cancellous bone trough and represented the most isometric tracking.
(15) Circular dichroic spectra of the lipophorins and apolipophorin from 190 to 250 nm showed a single trough at 218 nm and a peak at 194 nm.
(16) • The best ideas are tested by their peaks and troughs.
(17) During the estrous cycle, mitotic activity of the granulosa cells was highest at estrus in follicles less than 601 micron, and at diestrus in follicles greater than 600 micron; while the mitotic trough was at proestrus in all the follicles.
(18) Data analysis revealed a seasonal pattern in the monthly distribution of births, with the peak period observed during April-June, and a trough during November-January.
(19) The issues in CsA monitoring include selection of sample matrix, analytical method, dosing interval and the timing of trough measurements, the temporal relationship between measurements and physiological events such as toxicity, the concurrent presence of multiple other immunosuppressive agents, and the lack of "gold standards" for determining rejection, adequate immunosuppression, and toxicity.
(20) The addition of LTB4 to the microsomal fraction gave a type-I spectral change with a peak at around 390 nm and a trough at 422 nm, indicating a direct interaction of LTB4 with the cytochrome P-450.