(n.) The act or process of filtering; the mechanical separation of a liquid from the undissolved particles floating in it.
Example Sentences:
(1) Gel filtration of the 40,000 rpm supernatant fraction of a homogenate of rat cerebral cortex on a Sepharose 6B column yielded two fractions: fraction II with the "Ca(2+) plus Mg(2+)-dependent" phosphodiesterase activity and fraction III containing its modulator.
(2) In this review, we demonstrate that serum creatinine does not provide an adequate estimate of glomerular filtration rate (GFR), and contrary to recent teachings, that the slope of the reciprocal of serum creatinine vs time does not permit an accurate assessment of the rate of progression of renal disease.
(3) The enzyme was solubilized by Triton X-100 and purified approximately 480-fold by gel filtration and affinity chromatography on alanine methyl ketone-AH-Sepharose 4B.
(4) The authors conclude that H. pylori alone causes little or no effect on an intact gastric mucosa in the rat, that either intact organisms or bacteria-free filtrates cause similar prolongation and delayed healing of pre-existing ulcers with active chronic inflammation, and that the presence of predisposing factors leading to disruption of gastric mucosal integrity may be required for the H. pylori enhancement of inflammation and tissue damage in the stomach.
(5) The molecular weight of antigen RFB2 was estimated to be approximately 85,000 daltons based on the results of gel filtration on Sepharose CL-6B.
(6) Further purification of ZAB by filtration through Sephadex G-100 gave a preparation (ZAB2) which contained the common antigen as shown by the cross-reactivity of anti-ZAB2 rat serum with seven stains of N. gonorrhoeae.
(7) The flow properties of white cells were tested after myocardial infarction, by measuring the filtration rates of cell suspensions through 8 microns pore filters.
(8) Slight cross-reactivity was apparent when crude preparations of cellular or culture filtrate antigens, used in this laboratory to detect antibodies to Candida albicans, Coccidioides immitis and Cryptococcus neoformans, were probed with hyperimmune rabbit antisera to A. fumigatus.
(9) The culture filtrate and OM preparation were capable of inhibiting the chemotaxis of PMNL in response to the chemotactic factors of E. coli but LPS of B. fragilis was not able to do so.
(10) The enzyme from rat lung was purified about 30-fold by pH treatment (NH4)2SO4 fractionation, and gel filtration.
(11) Ten filtrating blebs remained after a 5 months' follow-up period.
(12) Medium molecules have been detected by two methods, gel filtration and screening technique, in patients with diffuse purulent peritonitis and with chronic renal insufficiency.
(13) Even though the administration of demethylchlortetracycline did not produce significant decreases in the glomerular filtration rate or renal blood flow in our patient, it is advisable to control the renal function in individuals treated with this drug since it may on occasion determine renal insufficiency.
(14) The fucose-labeled glycoproteins were converted to glycopeptides by pronase digestion and separated into two major classes by gel filtration on Sephadex-G-50.
(15) Receptors solubilized with Triton X-100 eluted in gel filtration as a major peak of Mr = 330,000 and retained high affinity binding (KD = 0.25 nM).
(16) It is inferred that in this experimental model (1) high-density lipoproteins are probably excreted in the glomerular filtrate, (2) alterations in the composition of the excreted lipoproteins may occur during their passage through the nephron.
(17) Fractionation of uremic serum by gel filtration on Sephadex G-200 shows that the inhibitory activity elutes with an apparent molecular weight of greater than 200,000 daltons.
(18) Ratfish serum proteins have been fractionated by ammonium sulfate, followed by gel filtration on Sepharose 6B.
(19) In other dogfish, glomerular filtration rate, urine flow, and Na and K excretory rates were measured for 3 days following implantation of desoxycorticosterone (DOCA), adrenocorticotropin (ACTH), or spironolactone; a control group was given no drug.
(20) An isolation technique involving filtration and discontinuous density gradient centrifugation was utilized for obtaining Giardia lamblia cysts from human feces.
Leach
Definition:
(n.) See 3d Leech.
(n.) A quantity of wood ashes, through which water passes, and thus imbibes the alkali.
(n.) A tub or vat for leaching ashes, bark, etc.
(v. t.) To remove the soluble constituents from by subjecting to the action of percolating water or other liquid; as, to leach ashes or coffee.
(v. t.) To dissolve out; -- often used with out; as, to leach out alkali from ashes.
(v. i.) To part with soluble constituents by percolation.
(n.) See Leech, a physician.
Example Sentences:
(1) Updated at 2.53pm GMT 2.48pm GMT 'Tricky job, well done' - IoD Graeme Leach , chief economist at the Institute of Directors, said: This was a tricky job, well done by George Osborne.
(2) In this study two soft coals obtained from mines in which workers had high and low incidences of CWP were leached with aqueous base and acid to remove their acidic and basic components.
(3) Leaching the lyophilized mitochondrial fraction with either hexane or acetone increased substantially the yields of the metabolites.
(4) Worse, the CFL contains mercury, which according to the EU's own regulations cannot be discarded in ordinary waste, lest the mercury leach into the water supply.
(5) A steady decline in the incidence with an increase in the preponderance of male cases was observed toward the west, reaching the lowest figures (male: 17.2 cases per 100,000 population; female: 5.5 per 100,000) in the Caspian rain belt, with its heavily leached soils and somewhat subtropical characteristcs.
(6) In spite of the leaching and contamination effects described in the literature--even for chrysotile fibrils taken from the lung, elemental spectra do not differ essentially from the asbestos standard.
(7) Contamination of cells by impurity atoms that may leach from electrodes was measured by atomic-absorption spectrophotometry and found to be negligible.
(8) "The UK economy faces a difficult period over the coming years, but if the government holds firm with the implementation of the spending review, long-term growth and employment prospects will be significantly improved," said Graeme Leach, chief economist and director of policy at the IoD.
(9) Once the pollution has ceased, it would appear that the arsenic is rapidly leached away, with a return to ecological normality this recovery was surprisingly rapid and complete.
(10) The surface is stabilized, i.e., leaching is retarded, by the rapid Ca,P-accumulation within the silica structure before apatite crystals are observed on the surface.
(11) In Dr Leach's book, a 13-year-old talking about the fall-out from her parents' break-up says: "I felt I'd vanished."
(12) Some cells, however, showed evidence that intracytoplasmic materials had been leached from the cells.
(13) Diethyl phthalate in the desiccant in 100-count bottles of brand A levothyroxine sodium tablets appeared to have leached into the tablets.
(14) With the leach tank incident in December there were questions raised about our environmental performance.
(15) The tendency of composites to leach filler elements almost linearly with time, could be used to generate a constant release rate of such therapeutic elements over time.
(16) Dissolution is incongruent, probably because most of the leached species can derive both from the matrix (polysalt gel) and the partly reacted glass particles.
(17) There was no evidence of energy-dependent extrusion of water or ions from either equilibrated rat or rabbit renal cortical slices leached at 0.5 degrees C and then reincubated at 25 degrees C in choline Ringer.7.
(18) Leach has also just been appointed advisory chair of next year's Guardian Edinburgh International Television Festival, reinforcing the sense that she and Twofour have earned their place at the TV industry's top table.
(19) Upon harvest (three months after application), a total of 49.2% of the applied radiocarbon was recovered: 2.0% in the plants, 46.9% in the soil, and 0.3% in the leaching water (depth greater than 50 cm); less than 0.1% was in the grains (0.464 ppm).
(20) The power requirements for initial leaching conditions were also calculated.