(n.) The act of dissociating or disuniting; a state of separation; disunion.
(n.) The process by which a compound body breaks up into simpler constituents; -- said particularly of the action of heat on gaseous or volatile substances; as, the dissociation of the sulphur molecules; the dissociation of ammonium chloride into hydrochloric acid and ammonia.
Example Sentences:
(1) These results show that the pathogenic phenotypes of MCF viruses are dissociable from the thymotropic phenotype and depend, at least in part, upon the enhancer sequences.
(2) Structure assignment of the isomeric immonium ions 5 and 6, generated via FAB from N-isobutyl glycine and N-methyl valine, can be achieved by their collision induced dissociation characteristics.
(3) It has recently been suggested that procaine penicillin existed in solution in vitro and in vivo as a "procaine - penicillin" complex rather than as dissociated ions.
(4) Elongation of existing RNA primers by the human polymerase-primase was semi-processive; following primer binding the DNA polymerase continuously incorporated 20 to 50 nucleotides, then it dissociated from the template DNA.
(5) Blood gas variables produced from a computed in vivo oxygen dissociation curve, PaeO2, P95 and C(a-x)O2, were introduced in the University Hospital of Wales in 1986.
(6) The data shows a dissociation between ferritin synthesis, cellular accumulation and secretion for which the mechanisms have still to be elucidated.
(7) Electromechanic dissociation, sinus bradycardia, nodal rhythm followed by idioventricular rhythm and asystole, were observed following myocardial rupture.
(8) Transcription studies in vitro on repression of the tryptophan operon of Escherichia coli show that partially purified trp repressor binds specifically to DNA containing the trp operator with a repressor-operator dissociation constant of about 0.2 nM in 0.12 M salt at 37 degrees , a value consistent with the extent of trp operon regulation in vivo.
(9) These differences in central connectivity mirror the reports on behavioral dissociation of the facial and vagal gustatory systems.
(10) In contrast, the enzymic domain of the colicin (T2) remained in the aqueous phase and was recovered in a highly active form as a consequence of its dissociation from the immunity protein.
(11) Predominantly observed defects included neural crest cells in ectopic locations, both within and external to the neural tube, and mildly deformed neural tubes containing some dissociating cells.
(12) Inhibition assays indicate an apparent dissociation constant (Kd) corresponding to 4 x 10(-9) M and an affinity constant (Ka) to 2.5 x 10(8)M-1 to K562 erythroleukemia cells.
(13) When CO was photolytically dissociated from the reduced protein two recombination processes were observed with rates almost identical with those observed in the stopped-flow experiments (k+1 = 3.3 X 10(3)M-1-S-1 and k+2 = 6.0 X 10(2)M-1-S-1).
(14) On the other hand, ultraviolet (320-nm) light, absorbed by 3-hydroxy-pyridinium cross-links which were rapidly photolyzed, partially dissociated polymeric collagen aggregates from bovine Achilles tendon after subsequent heating.
(15) The corresponding dissociation constants range from 2.8 nM for the native enzyme and 8.5 nM for the 96K fragment to approximately 15 nM for the 68K and 90K fragments [0.20 N KCl, 50 mM 3-(N-morpholino)propanesulfonic acid, and 1 mM CaCl2, pH 7.3, 25 degrees C].
(16) Addition of pyridoxal 5'-phosphate to slow dissociating, high affinity 5S R[3H]E2 dimers free in cytosol induced rapid [3H]E2 dissociation, although the receptor remained unaltered in the transformed dimerized state.
(17) If VF persisted or if countershock resulted in asystole or a nonperfusing rhythm (electrical-mechanical dissociation [EMD]), the alternate drug (naloxone or epinephrine) was then given.
(18) Addition of albumin or GTP to the incubation medium enhanced the specific binding of PGE2 by decreasing the dissociation constant of the low affinity-high capacity binding sites.
(19) Dissociated cerebral hemisphere cells from 4- to 7-day-old chick embryos were cultured either on a collagen or a polylysine substrate in a serum-containing medium.
(20) Incubation of the enzyme-inhibitor complex with the sulfhydryl reagent caused dissociation into active ribonuclease and inactive inhibitor.
Volatile
Definition:
(a.) Passing through the air on wings, or by the buoyant force of the atmosphere; flying; having the power to fly.
(a.) Capable of wasting away, or of easily passing into the aeriform state; subject to evaporation.
(a.) Fig.: Light-hearted; easily affected by circumstances; airy; lively; hence, changeable; fickle; as, a volatile temper.
(n.) A winged animal; wild fowl; game.
Example Sentences:
(1) No correlation between volatile make up and geography was found, but the profiling procedures are shown to be of use in the forensic problem of relating samples to a common source.
(2) Glucose, osmotic pressure, packed cell volume, PFC by combustion and volatilization were also measured in blood samples.
(3) Less volatile amino acids such as aspartic acid, phenylalanine, methionine, glutamic acid, tyrosine, arginine, and tryptophan can be resolved at a 100 ft x 0.02 in column.
(4) These results indicate that all three volatile anesthetics have direct effects on cardiac calcium channels, and that the magnitude of the effects depends on their anesthetic potencies.
(5) Business picked up in the fourth quarter of 2013 but the consumer goods giant said those markets had continued to slow and it expected "ongoing volatility in the external environment".
(6) George Osborne became the first British minister to visit the volatile Chinese region of Xinjiang on Wednesday amid reports that 40 people had been injured or killed in the latest episode of deadly violence to hit the country’s far west.
(7) A total of 194 beers (148 US and 46 Canadian) were analysed for volatile N-nitrosamines.
(8) Rumen pH decrease to below 5.0 in S2-, lasalocid-, and monensin-treated cattle was not due to lactic acid, but to increased production of volatile fatty acids.
(9) The microflora in strained rumen fluid did not methylate or volatilize 203Hg2+ at detectable rates.
(10) Protein-bound acyl groups were labilized by performic acid treatment indicating their attachment to protein at thiol residues; however, the product released was volatile, which is not characteristic of malonic acid.
(11) In an experiment with wethers we investigated the effect of complete pelleted feed ration on the concentration of volatile fatty acids in the rumen and intestinal tract.
(12) This was possible because the Ara test, for volatile compounds (such as vinyl bromide), did not require the use of special vaporization techniques, which are difficult to evaluate quantitatively for mutagenic activity.
(13) Furthermore, volatile sulfide and 2-ketobutyrate productions from methionine in a saliva putrefaction system were completely inhibited by the two-phase mouthwash; and consumption of methionine was decreased by 65 percent.
(14) Uncertainty over ‘Brexit’, weak overseas growth and financial market volatility are all creating an unsettling business environment and point to downside risks to the economy in 2016.” The official figures follow mixed reports on the economy in recent weeks.
(15) The volatilization of DBCP from soils, as affected by the soil characteristics and application techniques, was studied in a laboratory experiment.
(16) Further studies are needed to determine the identity and toxicological properties of the non-volatile N-nitroso compounds.
(17) The longer the international standoff over Iran’s suspect nuclear programme continues, the more dangerous and volatile the situation becomes.
(18) The N supplements had no significant effects on rumen pH, concentrations of volatile fatty acids, their molar proportions or the disappearance of DM or N from porous synthetic-fibre bags.
(19) Effects of noxious electrical tooth stimulations and intraarterial administration of bradykinin or inhalation of volatile anesthetics on substance P content in the diencephalon-mesencephalon, pons-medulla and the spinal cord were examined in the rat.
(20) The efficiency of the volatilization of heroin using this procedure was studied under laboratory conditions using thin layer chromatography, gas chromatography and high pressure liquid chromatography.