(n.) The act or process of concentrating; the process of becoming concentrated, or the state of being concentrated; concentration.
(n.) The act or process of reducing the volume of a liquid, as by evaporation.
(n.) The act or process of removing the dress of ore and of reducing the valuable part to smaller compass, as by currents of air or water.
Example Sentences:
(1) In each sheep there was a significant negative correlation between the glucose and corticosteroid concentrations in both maternal and fetal plasma, and there were positive correlations between the maternal and fetal plasma concentrations of glucose, and between the glucose and fructose concentrations of fetal plasma.
(2) Synthesis of choline esterase on the medium with acetylcholine at a concentration of 1% was increased more than twofold upon addition of glucose at a concentration of 0.1%.
(3) Steady-state values of cell, glucose, and cellulase concentration oxygen tension, and outlet gas oxygen partial pressure were recorded.
(4) Patient plasma samples demonstrated evidence of marked complement activation, with 3-fold elevations of C3a desArg concentrations by the 8th day of therapy.
(5) Arachidic acid was without effect, while linoleic acid and linolenic acid were (on a concentration basis) at least 5-times less active than arachidonic acid.
(6) The fraction of the viral dose which became cell associated was independent of the incubation temperature and increased with increasing target membrane concentration.
(7) Maximum increases in portal plasma secretin concentrations of 143, 146 and 190% and maximum increases in VIP of 116, 155 and 147% after, respectively, intraduodenal 0.1 M NaHCO3, 0.1 M Na2CO3, and 0.025 M NaOH were found.
(8) ), the concentration of AMPO in the hypothalamus was 5.4 times the concentration at 20 h after one injection.
(9) In cardiac tissue the adenylate system is not a good indicator of the energy state of the mitochondrion, even when the concentrations of AMP and free cytosolic ADP are calculated from the adenylate kinase and creatine kinase equilibria.
(10) We similarly evaluated the ability of other phospholipids to form stable foam at various concentrations and ethanol volume fractions and found: bovine brain sphingomyelin greater than dipalmitoyl 3-sn-phosphatidylcholine greater than egg sphingomyelin greater than egg lecithin greater than phosphatidylglycerol.
(11) Cyclic AMP stimulated phosphorylation by [gamma-32P]ATP of two proteins of apparent Mr = 20,000 and 7,000 that were concentrated in sarcoplasmic reticulum, but the stimulation was markedly dependent on the presence of added soluble cyclic AMP-dependent protein kinase.
(12) We conclude that the SHBG concentration strongly affects this estimation.
(13) Ursodeoxycholate was the only dihydroxy bile salt which was able to solubilize phospholipid (although not cholesterol) below the critical micellar concentration.
(14) The fluctuations in [Ca2+]i measured with fura-2 were synchronized among the population of cells observed and were sensitive to extracellular Ca2+ concentration ([Ca2+]o).
(15) The observed relationship between prorenin and renin substrate concentrations might be a consequence of their regulation by common factors.
(16) In the presence of insulin, a qualitatively similar pattern of increasing responses to albumin is observed; the enhancement of each response by insulin is, however, only slightly potentiated by higher albumin concentrations.
(17) We maximize an objective function that includes both total production rate and product concentration.
(18) The procedure used in our laboratory was not able to provide accurate determination of the concentrations of these binding forms.
(19) Thus adrenaline, via pre- and post-junctional adrenoceptors, may contribute to enhanced vascular smooth muscle contraction, which most likely is sensitized by the elevated intracellular calcium concentration.
(20) The specific activities of extracts from cells grown under phototrophic and aerobic conditions were similar and not affected by the concentration of iron in the growth media.
Tightness
Definition:
(n.) The quality or condition of being tight.
Example Sentences:
(1) Freshly isolated sarcoplasmic reticulum vesicles contain 0.05 mol of tightly bound ADP and 0.03 mol of tightly bound ATP per mol of Ca2+, Mg2+-ATPase (ATP phosphohydrolase, EC 3.6.1.3).
(2) The expression of the Pgp isoforms appears to be tightly regulated and, at least in some cells, under complex hormonal control.
(3) Whereas the tight junctions of endoneurial capillaries are known to prevent certain blood-borne substances from entering the endoneurium, it was not clear whether the permeability of the pulpal capillaries, which are distant from the nerve fibres, could affect the nerve fibre environment.
(4) The cells are predominantly monopolar, tightly packed, and are flattened at the outer border of the ring.
(5) These data indicate that topoisomerase I and RNA polymerase I are tightly complexed both in vivo and in vitro, and suggest a role for DNA topoisomerase I in the transcription of ribosomal genes.
(6) Immunofluorescence and immunoelectronmicroscopy experiments demonstrated that while tight junctions demarcate PAS-O distribution in confluent cultures, apical polarity could be established at low culture densities when cells could not form tight junctions with neighboring cells.
(7) Investigations have been made to determine the identity and binding characteristics of the pterins that are bound tightly to dihydrofolate reductases which are isolated from vertebrate sources by a well established procedure.
(8) At all times, a tight inverse correlation exists between ATP and IMP concentrations.
(9) Recently, a gene for ITD (DYT1) in a non-Jewish kindred was located on chromosome 9q32-34, with tight linkage to the gene encoding gelsolin (GSN).
(10) This study investigates the use of the incentive inspirometer to observe the effects of tight versus loose clothing on inhalation volume with 17 volunteer subjects.
(11) In contrast, interchange of the histones and tightly bound non-histone protein DNA complexes from hormone-withdrawn and estrogen-stimulated chromatins during reconstitution did not affect the level of mRNAOV sequences produced.
(12) Using microelectrodes and various microscopic techniques active Na+ absorption as well as K+ secretion has been localized to the principal cells, while Cl- absorption was found to proceed largely, though not exclusively, through the tight junctions between cells.
(13) The successful establishment of a postcrisis SV-40 T antigen transformed epithelial cell line, 1HAEo-, which retains tight junctions and vectorial ion transport, is described.
(14) The present investigation shows that the intramembranous proteins of tight and gap junctions are mobile structures within the fluid membrane.
(15) In contrast, after incubation with 0.5% DOC, the core microfilaments are no longer tightly bundled yet the lateral arms remain attached with a distinct 33-nm periodicity.
(16) The data collected by several approaches reveal that assembly and maturation of vaccinia involves a tightly coupled sequence of interrelated events including the assembly of the envelope, post-translational cleavage of several virion polypeptides, and induction of the core enzymes.
(17) The tight coupling between neuronal activity and oxidative energy metabolism forms the basis for the use of cytochrome oxidase as an endogenous metabolic marker for neurons.
(18) When using a nylon thread for the attachment of a pseudophakos to the iris, it may happen that the suture is slung tightly around the implant-lens.
(19) Some antibodies and other proteins bind tightly to nitrocellulose and dissociation of these proteins by Tween 20 is barely detectable.
(20) Independent experts warn that rumours and deliberate misinformation about the regime are rife, partly because it is impossible to verify or disprove most stories about the tightly controlled country's elite.