(n.) Exposure to the free action of the air; airing; as, aeration of soil, of spawn, etc.
(n.) A change produced in the blood by exposure to the air in respiration; oxygenation of the blood in respiration; arterialization.
(n.) The act or preparation of charging with carbonic acid gas or with oxygen.
Example Sentences:
(1) A theory for the neural control of middle ear aeration is proposed.
(2) It is suggested that lung ventilation takes place in the avian embryo in three distinct stages: the major air-ways become aerated, then respiratory movements begin and lastly the tertiary bronchi are slowly aerated.
(3) We therefore investigated the influence of different carbon dioxide tensions and bicarbonate concentrations on directly measured pH of organ baths aerated with mass-spectrometric analyzed O2-CO2 gases.
(4) The test organism, grown under anaerobic conditions in Trypticase soy broth, was diluted in buffered salt solution, and about 2 x 10(4) cells were suspended in 10 ml of an aerated broth.
(5) On the other hand, maintaining constant DO levels at 50 or 10% raised exoprotein levels higher than those achieved in a culture grown at the optimal aeration rate.
(6) None of the mutants are oxygen sensitive; they grow as well as wild bacteria, even when aerated.
(7) In helical strips of dog cerebral arteries contracted with K+ or prostaglandin F2 alpha, the increase in CO2 from 5 to 15% in the gas aerating the bathing media produced a persistent relaxation in association with a rise of PCO2 and a fall of pH and PO2.
(8) Although X-ray studies in many of the patients revealed mucosal swelling four weeks after surgery, the maxillary sinuses were well aerated 8 weeks after operation.
(9) One problem remains: permanent aeration of the new tympanic cavity.
(10) The time of the sporulating forms appearance depended on the aeration rate which defined the quantitative composition of the population during the phase of the culture active growth and the stationary phase.
(11) Azotobacter chroococcum (ATCC 7493) was grown in continuous culture with intense vortex aeration (stirring rate 1750 rpm) with up to 50% O2 in the gas phase.
(12) Assays on the Rm nifA-m RNA produced by the constitutive Rm nifA in E. coli under aerobic and microaerobic conditions with the cloned nifA as a probe for dot blot hybridization showed a marked decrease of Rm nifA mRNA when the bacteria were grown under aeration.
(13) Acute anoxia was induced by aerating a muscle chamber with a gas mixture of 95% nitrogen and 5% carbon dioxide.
(14) Amylase production by a Bacillus subtilis strain can occur without aeration after reaching the stationary phase of growth, provided the pH is controlled.
(15) The photosynthetically-incompetent mutant V-2 of Rhodopseudomonas spheroides which is incapable of synthesising bacteriochlorophyll was grown aerobically under conditions of both high and low aeration.
(16) The fim(+) bacteria did not show selective outgrowth in mixed cultures grown in broth aerated by continuous shaking, in static broth incubated anaerobically in hydrogen, and on aerobic agar plates, i.e., under conditions not allowing an advantage from pellicle formation.
(17) The rate of alpha-keto acid biosynthesis, on the contrary, decreased in the conditions of low aeration.
(18) Pyruvate-dependent glutamine aminotransferase activity is not regulated directly by O2 itself since a rho- strain showed a high activity regardless of the extent of aeration of cultures.
(19) Bacteriorhodopsin formation was negligible when washed suspensions of cells from dark, limited aeration or light, adequate aeration cultures were incubated in the light with limited aeration.
(20) Seventy two left anterior descending and circumflex coronary artery rings were removed in twelve dogs and mounted in organ chambers filled with Krebs-Ringer bicarbonate solution and aerated with 95% O2-5% CO2.
Soil
Definition:
(v. t.) To feed, as cattle or horses, in the barn or an inclosure, with fresh grass or green food cut for them, instead of sending them out to pasture; hence (such food having the effect of purging them), to purge by feeding on green food; as, to soil a horse.
(n.) The upper stratum of the earth; the mold, or that compound substance which furnishes nutriment to plants, or which is particularly adapted to support and nourish them.
(n.) Land; country.
(n.) Dung; faeces; compost; manure; as, night soil.
(v. t.) To enrich with soil or muck; to manure.
(n.) A marshy or miry place to which a hunted boar resorts for refuge; hence, a wet place, stream, or tract of water, sought for by other game, as deer.
(n.) To make dirty or unclean on the surface; to foul; to dirty; to defile; as, to soil a garment with dust.
(n.) To stain or mar, as with infamy or disgrace; to tarnish; to sully.
(v. i.) To become soiled; as, light colors soil sooner than dark ones.
(n.) That which soils or pollutes; a soiled place; spot; stain.
Example Sentences:
(1) The disappearance of the herbicide, Avadex (40% diallate), from five agricultural soils (differing in either pH, carbon content, or nitrogen content), incubated under sterile and non-sterile conditions, was followed for a period of 20 weeks.
(2) The remaining 5 soil samples, obtained from sites that were not in close proximity to lakes, were also negative except for one that contained type B.
(3) One ejaculation followed by daily contact with soiled bedding taken from a male's cage did not increase pregnancy rates.
(4) Fourteen soil bacteriophages active against Rhizobium trifolii W19 have been studied which fall into four structural groups.
(5) Recoveries of these 3 herbicides added to soil, wheat, and barley samples at 0.05, 0.1, 0.5, and 1.0 ppm levels were between 65 and 93%.
(6) The hypothesis was tested that plaque, as a complex soil comprising microorganisms, cell debris, salivary deposits and other ill-defined organic and inorganic components, would be susceptible to removal by a rinse with high detersive action.
(7) While undoubtedly a good understanding of soil microbiology in terms of pedology exists, little is presently known about unsaturated subsoils, and aquifers.
(8) The behavior and effects of atmospheric emissions in soils and plants are discussed.
(9) The first stop in this arid place of poor farms and orchards clinging to the dry soil is Rafah, cut off by the border from its Palestinian counterpart.
(10) Although selenium deficiency in livestock is consequently now rare in Oregon, selenium-deficient soils and attendant selenium deficiency conditions have been reported near the Kesterson Wildlife Refuge in the Northern part of the San Joaquin Valley, California, where, paradoxically, selenium toxicity in wildfowl, nesting near evaporation ponds, occurred and attracted wide attention.
(11) It is now recognized that dwarfism in males is frequent around the Mediterranean, where wheat is the staple of life and has been grown for 4,000 years on the same soil, thereby resulting in the depletion of zinc.
(12) The influence of salt mixtures consisting of Ca(H2PO4)2, trace elements, CaSO4, CaCO3, Na2CO3, NaCl and K2SO4 in different combinations on the nitrifying power, evolution of carbon dioxide and the total number of bacteria was studied in arid soils (sandy and alluvial) and semi-humid ones (chernozem and rendzina).
(13) High concentrations of mercury, cadmium, and lead have also been observed in urban soils.
(14) Two long-term tillage studies on fine-textured, clay loam soils were sampled in July and November 1977 following 2 years of limited rainfall.
(15) Adult Persian lime trees grafted on Citrus macrophylla and C. volkameriana were used, planted on a groundwater-affected red ferrilytic soil in the La Habana Province.
(16) Recent reports incriminating Acanthamoeba, a small free-living amoeba, wide-spread in environmental soils and waters, in acanthamoebic keratitis cases wearing soft contact lenses, drew attention to cleaning solutions for contact lenses.
(17) An enzyme (nitrilase) that converts the herbicide bromoxynil (3,5-dibromo-4-hydroxybenzonitrile) to its metabolite 3,5-dibromo-4-hydroxybenzoic acid was shown to be plasmid encoded in the natural soil isolate Klebsiella ozaenae.
(18) Forty soil samples from different desert localities in Kuwait were surveyed for keratinophilic and geophilic dermatophytic fungi.
(19) The well drained soils of the Suiá--Missu forest are very uniform, deep latosols (oxisols) of very dystrophic nature with pH (in water) between 4.0 and 5.0 (see table 2, p. 203).
(20) To reduce the risks posed by the hazard, the report recommends that a management plan be created to determine the level of soil contamination and for managing excavated soil, and to decommission disused septic tanks to prevent the spread of contamination.