What's the difference between equivalence and valency?

Equivalence


Definition:

  • (n.) The condition of being equivalent or equal; equality of worth, value, signification, or force; as, an equivalence of definitions.
  • (n.) Equal power or force; equivalent amount.
  • (n.) The quantity of the combining power of an atom, expressed in hydrogen units; the number of hydrogen atoms can combine with, or be exchanged for; valency. See Valence.
  • (n.) The degree of combining power as determined by relative weight. See Equivalent, n., 2.
  • (v. t.) To be equivalent or equal to; to counterbalance.

Example Sentences:

  • (1) A survey carried out two and three years after the launch of the official campaign also showed a reduction in the prevalence of rickets in children taking low dose supplements equivalent to about 2.5 micrograms (100 IU) vitamin D daily.
  • (2) Although lorazepam and haloperidol produced an equivalent mean decrease in aggression, significantly more subjects who received lorazepam had a greater decrease in aggression ratings than haloperidol recipients; this effect was independent of sedation.
  • (3) In the 153 women to whom iron supplements were given during pregnancy, the initial fall in haemoglobin concentration was less, was arrested by 28 weeks gestation and then rose to a level equivalent to the booking level.
  • (4) The reducing equivalents could be donated by formate or NADH through some segment of the membrane respiratory chain.
  • (5) We found that, although controlled release delivery of ddC inhibited de novo FeLV-FAIDS replication and delayed onset of viremia when therapy was discontinued (after 3 weeks), an equivalent incidence and level of viremia were established rapidly in both ddC-treated and control cats.
  • (6) At concentrations several hundredfold higher than the equivalents present in the minimum concentration of rat skin soluble collagen required for platelet aggregation, neither Hyl-Gal (at 29 muM) nor Hyl-Gal-Glc (at 18 muM) caused platelet aggregation or inhibited platelet aggregation by native collagen.
  • (7) The concentrations of anesthetics having this effect on the putative Ca2+ channel were between 0.0026 and 0.078 MAC equivalents for each agent, and these concentrations are much lower than the anesthetic concentrations affecting Ca2+ uptake.
  • (8) The industry will pay a levy of £180m a year, or the equivalent of £10.50 a year on all household insurance policies.
  • (9) Legislation governing adoption has attempted to make the adoptive family the equivalent of a consanguinal one, with varying degrees of success.
  • (10) In spite of the formation of the epoxide intermediate, no binding of [14C]d-limonene equivalents to mouse kidney proteins was observed.
  • (11) However, the degree of inhibition of parasite replication after exposure to rMu-GM-CSF was not as great as after treatment with rMu-IFN-gamma, and much more rMu-GM-CSF than rMu-IFN-gamma was required to achieve an equivalent antimicrobial effect.
  • (12) Ferredoxin reductase (Fd-reductase) supplies reducing equivalents obtained from NADPH to mitochondrial cytochrome P450 enzymes via the small iron-sulfur protein ferredoxin.
  • (13) Eight healthy, nonsmoking subjects received 1.7, 3.4, and 5.2 mg of atropine sulfate by inhalation and 1.67 mg of atropine free base (equivalent to 2 mg of atropine sulfate) by intramuscular (i.m.)
  • (14) Early in the infection, the 5'-most site, L1, is used preferentially, whereas late in infection, all sites are used equivalently.
  • (15) Both formats were found equivalent on all measures.
  • (16) The norms are reported as "Scaled Score Equivalents of Raw Scores" for each age group and as "IQ Equivalents of Sums of Scaled Scores."
  • (17) An average size chromomere of the polytene X chromosome of Drosophila melanogaster contains enough DNA in each haploid equivalent strand to code for 30 genes, each 1,000 nucleotides long.
  • (18) Tumours from two of three patients with a current HBV infection contained 1--2 genomes per cell of unintegrated viral DNA, while tumours from the third HBs antigen-positive patient contained less than one genome equivalent per ten cells.
  • (19) However, the diuretic effect of 1 mg bumetanide is equivalent to 40 to 60 mg furosemide or ethacrynic acid.
  • (20) And the equivalent pulmonary vascular resistance Rpc was calculated as the predicted pulmonary vascular resistance in the increased pulmonary blood flow of two times Qp.

Valency


Definition:

  • (n.) See Valence.
  • (n.) A unit of combining power; a so-called bond of affinity.

Example Sentences:

  • (1) The mixed-valence-state cytochrome oxidase mixed with O2 at -24 degrees C and flash-photolysed at -60 to -100 degrees C reacts with O2 and initially forms an oxy compound (A2) similar to that formed from the fully reduced state (A1).
  • (2) Additional results, together with simulations based on a simple kinetic model, suggest that the reduced apparent valence of the low slope component of the Q-V curve results from gating charge immobilization occurring at holding potential.
  • (3) A related explanation is that the 609 nm absorbance involves a charge-transfer interaction of both iron and copper as a mixed-valence binuclear complex, Cua3, having properties of a non-blue copper.
  • (4) RBDs were significantly more impaired than LBDs or NCs on category and valence accuracy, while LBDs posed expressions with significantly more intensity than RBDs or NCs.
  • (5) The extent of adsorption was affected by the concentration and valency of cations, indicating a charge-dependent process.
  • (6) Use of that principle was demonstrated by fourth grade children who judged that telling the truth, as opposed to lying, was shown by a consistency between the affective valence of the verbal and the nonverbal communications.
  • (7) Research reported here shows that primary and transferred releasing valences are differentially affected by environmental variables.
  • (8) Furthermore, the valences of all ions in solution on both sides of the membrane are taken to be of equal absolute magnitude.
  • (9) Possible valence bond structures for 3-methylpurine residues in DNA are discussed, leading to the suggestion that ionized forms with positively charged amino groups may be the most effective blocks to template activity.
  • (10) A confirmatory factor analysis on these subscales showed that the Affective Valence, Empathic Caring, Self-Sacrifice, and Societies' Duties subscales each reflect a humanitarian concern for children and that the Instrumentality and Authoritarian Attitude subscales tap values involving a moralistic expectation of children.
  • (11) The excitatory potential, the involvement potential, and the hedonic valence of the nonerotic and erotic stimuli were also assessed.
  • (12) A monovalent form of concanavalin A (m-Con A) has been prepared to determine the importance of valence for human lymphocyte surface binding and subsequent lymphocyte stimulation as measured by blast transformation and cytotoxicity.
  • (13) As concerns the valence of the natural focus, the most important was the inundated forest in the Drnholec locality.
  • (14) Examination of the antigen dose-response curves and maximal responses obtained suggests that valency of the antigen may be important both in determining the avidity of interaction between the pCTL and the antigen-bearing structure, and in determining the extent to which localized receptor cross-linking occurs on the cell surface to result in triggering.
  • (15) Therefore, no conclusions about biological valence and tumour localisation could be drawn from the aspect of the cell picture which we observed and from the degree of pleocytosis.
  • (16) During presentation of pictures with negative valence the m. frontalis lateralis and the m. corrugator supercilii revealed enhanced EMG-reactions as compared to the repeated presentation of pictures with positive valence.
  • (17) The degree and the character of these changes depend on cation valency and the initial value of cell EM.
  • (18) Maximum adsorption at 23 degrees C occurred within 2 h. The amounts of DNA which adsorbed to sand increased with the salt concentration (0.1 to 4 M NaCl and 1 mM to 0.2 M MgCl2), salt valency (Na+ less than Mg2+ and Ca2+), and pH (5 to 9).
  • (19) The influence of valence and heavy chain on antibody activity was investigated using transfectoma-derived, class-switched IgG1 and IgM human monoclonal antibodies (MAbs) reactive with the bacterial pathogens Escherichia coli K1 and group B Streptococcus species.
  • (20) The obtained data allows to suggest that one of the possible mechanisms of 6-ONDA neurotoxic action includes the generation of superoxide, whose dismutation to hydrogen peroxide in the presence of transient valency ions gives rise to HO.