(a.) Of or pertaining to sediment; formed by sediment; containing matter that has subsided.
Example Sentences:
(1) Muramic acid, a component of the muramyl peptide found only in the cell walls of bacteria and blue-green algae, furnishes a measure of detrital or sedimentary procaryotic biomass.
(2) Thus carbon dioxide was taken out of the atmosphere and dumped on the seafloor before being turned into sedimentary rock.
(3) In the Central Valley of California, arsenic is present in soil at naturally high concentrations, being derived from marine sedimentary parent material of the Coastal Range.
(4) Gas-liqid radiochromatography was used to determine the soluble metabolic end products from [U-14C]glucose and a U-14C-labeled amino acid mixture by representative sedimentary clostridial isolates and by natural sediment microbial communities.
(5) This provides a microbial mechanism for the oxidation of the complex assemblage of sedimentary organic matter in Fe(III)- or Mn(IV)-reducing environments.
(6) In the light of these epidemiological observations and experimental studies it may be concluded that, at present, endemic goitre in western Colombia is not due to nutritional iodine deficiency, but that water supplies are contaminated with sulfur-bearing organic compounds with thionamide-like antithyroid activity most probably deriving from sedimentary rocks rich in organic matter and that these compounds are the main factor underlying the endemia.
(7) The effect of Fusarium sporotrichiella v. sporotrichioides mycotoxin (sporofusarin) on the total and non-sedimentary supernatant activity of 13 marker-enzymes of subcellular particles (2 mitochondrial enzymes-cytochrome oxidase and malate dehydrogenase; 8 lysosomal enzymes -- acid phosphatase, acid RNAase, acid DNAase, arylsulphatases A and B, beta-N-acetylglucosaminidase, beta-glucuronidase, beta-galactosidase and beta-glucosidase; 2 microsomal enzymes -- glucose-6-phosphatase and acetylesterase; plasma membrane enzyme -- alkaline phosphatase) of the rat liver, kidney, spleen and bone-marrow was studied in in vivo experiments.
(8) Contributions to PCP loss were determined for rock surface (epilithic), macrophyte surface (epiphytic), sedimentary, and water column communities by measuring rates of PCP disappearance in stream water, containing ambient concentrations of PCP, in contact with representative compartmental samples.
(9) Two other hypotheses regarding the causes of the framentation have been raised: a substantial portion of the breakage in the Krapina collection is attributable to excavation damage; and the rest of the breakage is attributable to sedimentary pressure and to natural rock falls that occurred during the site's prehistory.
(10) A mean tap water 222Rn content of 38.3 Bq L-1 and 10.4 Bq L-1 was measured in 31 villages with a crystalline subsoil and 73 villages with a sedimentary subsoil, respectively.
(11) One significant family of sedimentary lipids of widespread occurrence are series of C28-C32 alkanediols and hydroxyketones.
(12) Immunoglobulin G from the serum of patients with myeloma and positively reacting in the sedimentary test for cancer (PPR-STC) was purified by DEAE-Spehadex A-50 and KM-cellulose chromotography and studied by the method of isoelectrofocusing; Application of 1% ampholine within the pH gradient 3.0-10.0 shows the difference between the isoelectric spectra of immunoglobulin G from the donor and from a patient with myeloma.
(13) The foci were found mainly on Tertiary or Quaternary-Tertiary volcanic rocks in the Eastern and Central zones, or on non-carbonate sedimentary rocks in the Western zone.
(14) A survey of 37 communities supplied by stream water and receiving iodised salt for the last 10-20 years indicates that the presence of sedimentary rocks in the watersheds of streams more closely correlates with goiter prevalence than 12 other possible causative variables.
(15) Similar information on the proteins from the geological matrix might provide useful fingerprints for reconstructing ancient environments and for assessing sedimentary rocks for fossil fuel exploration.
(16) It was calculated that the mean proportion of cadmium in the sedimentary dust was between 13 and 16 p.p.m.
(17) During the hydrolysis of chitin, there was transient accumulation of a non-sedimentary chitin fraction which was not detectable by high-performance liquid chromatography.
(18) The gamma-ray absorbed dose rates in air above igneous rocks generally vary with their silica contents, and with the exception of shale, sedimentary rocks have lower K:U and K:Th ratios than most igneous rocks.
(19) Bones from a stratified sedimentary deposit in the Puu Naio Cave site on Maui, Hawaiian Islands, reveal the late Holocene extinction of 19 species of birds.
(20) Clinical or pathological signs of swine dysentery were not produced, although the organism was readly established in the sedimentary tract.
Stratification
Definition:
(n.) The act or process of laying in strata, or the state of being laid in the form of strata, or layers.
(n.) The deposition of material in successive layers in the growth of a cell wall, thus giving rise to a stratified appearance.
Example Sentences:
(1) An important stratification factor, however, was related to tobacco usage.
(2) As retinal stratification continued, more cells were observed to have elaborated membrane systems for GABA uptake with varying degrees of affinity.
(3) Since T-antigen expression is correlated directly with impairment of stratification and differentiation, it is interesting that treatment of SVK14 with a single growth factor.
(4) We discuss advantages and disadvantages of total randomization, of Zelen-type randomization procedures, of Efron-type procedures vs more classical blocking procedures to control the balance between groups, and of Simon-Pocock-type procedures vs more classical stratification for controlling possible biases in prognostic factors.
(5) Heavy birthweight was 50% more frequent among Natives than non-Natives (relative risk 1.47, 95% confidence limits 1.35 and 1.59), after stratification by week of gestation.
(6) After allowance for the fact that regression analyses suggested that the proportion of tremolite in dust was probably 2.5 times higher in Thetford Mines, Quebec, than in Charleston, the results from both matched pair and stratification analyses of tremolite fibre concentrations in lung were almost the same as for chrysotile.
(7) Two prognostic stratification schemes were developed on the 1973 population which identified low and high risk groups with meaningfully different four-month cardiac death rates.
(8) It can be concluded that (i) stratified inhomogeneity in distal alveolar space does not exhibit a limiting factor of oxygen uptake in lungs, (ii) a contribution of stratificational effects to sloping alveolar plateau is expected to be of minor importance.
(9) The co-stratification of the two kinds of DS ganglion cell is consistent with the sharing of some inputs in common, including some cone bipolar cell inputs.
(10) Because hemicysts originated by detachment of squamous cells from the basal layers but not from adjacent squamous cells, they were considered to indicate stratification in the cultures.
(11) The value of invasive electrophysiologic testing for risk stratification in the general postinfarction patient population remains unclear.
(12) Although there is general concern about the psychological effects of gender stratification, we know relatively little about the particular aspects of inequality that affect men and women's mental health.
(13) The study used a cohort of elderly people randomly divided into two groups after stratification for sex.
(14) The recognition that tumor grade is the dominant prognostic variable has resulted in the more common use of a grading system, and a more uniform reporting and stratification of end results.
(15) Stratification of patients by either high or low predominant histologic grade is recommended in future GBA treatment studies.
(16) Extra-cellular recordings from single cells in the dorsal lateral geniculate nucleus (dLGN) of the tammar wallaby, Macropus eugenii, were made to find out whether the stratification of the nucleus could be correlated with the receptive field properties of units.
(17) Based on dendritic stratification within the inner plexiform layer (Famiglietti and Kolb, '76), the somatostatin-immunoreactive large cells were found to include both on-center cells and off-center cells, but were predominantly of the off-center type.
(18) Finally, we found that the changes in integrin expression that occur on initiation of stratification in vivo could be reproduced in organ cultures of developing skin; such cultures therefore provided a useful experimental model for further studies of the role of integrins in epidermal stratification.
(19) Patients with T1 squamous cell carcinomas had, in fact, the best prognosis (26.5% recurred) among the subgroups obtained by stratification of T number and cell type together; loco-regional failure as exclusive modality of relapse had a 5-year rate of 19.7% and metastatic failure of 30.0%.
(20) In 70% of cases the osseous adhesion is formed at the level of disks which demineralized osseous sawdust was introduced to (adhesion was formed, mainly, as perifocal osseous stratifications).