(n.) An element, atom, or radical having a valence or combining power of two.
(a.) Having a valence or combining power of two; capable of being substituted for, combined with, or replaced by, two atoms of hydrogen; as, oxygen and calcium are dyad elements. See Valence.
Example Sentences:
(1) The 3' end of the cell cycle regulated mRNA terminates immediately following the region of hyphenated dyad symmetry typical of most histone mRNAs, whereas the constitutively expressed mRNA has a 1798 nt non-translated trailer that contains the same region of hyphenated dyad symmetry but is polyadenylated.
(2) Termination of sar RNA synthesis occurs after transcription of the first and second Ts of a TTTA sequence following a region of hyphenated dyad symmetry.
(3) Sixty mother-toddler dyads (30 boys and 30 girls) participated as subjects.
(4) The reciprocal (equivalent) and nonreciprocal (excessive giving or receiving) exchange of services was measured by the frequency of exchange and perception of potential support between the dyad.
(5) Because current family systems theory indicates that positive individual relationships within a dyad (e.g., child-mother) should be related to an overall favorable impression of the family system, we hypothesized that these two instruments should demonstrate convergence on selected dimensions.
(6) The purpose of the study was to determine the effect of two interventions, Calorie Management and Socioemotional Growth Fostering, on (a) the weight of children aged 1 to 3 years with nonorganic failure to thrive and (b) the interaction behaviors of 10 mother-child dyads.
(7) Most of the literature on this subject has indicated, contrary to the findings reported here, that full and intense erotic transference manifestations are rarely if ever seen in this therapeutic dyad.
(8) (2) The peak-to-peak spacing in this distribution is significantly different from 10.3 bases in the region covering three helix turns immediately 5' of the dyad axis.
(9) Assertive needs produced the largest number od dyads which discriminated (p less than .05) clinical and control groups.
(10) However, two mutations which increased the dyad symmetry of part of the binding site yielded ligands with a higher affinity for MDBP.
(11) This mutation is partly located within a region of dyad symmetry.
(12) The purpose of this study was to compare dyadic interaction behavior of traumatically disabled and nondisabled men paired in homogeneous or mixed dyads.
(13) MCM1 binds to the dyad symmetry element 5'-CCTAATTAGG and related sequences, which we refer to as MCM1 control elements (MCEs).
(14) Data also suggest that black dyads are represented more frequently in the positive categories, and white dyads are more likely to be categorized as "apathetic" or "hostile."
(15) (2) Coincident disomy increased as a function of the mean number of disomic chromosomes per spore in each dyad, but this increase differed functionally from that expected if coincident disomy in the two ascospores were a simple, meiotically independent, concomitant of multiple disomy.
(16) Binding sites for the GAL4-positive regulatory protein have been identified upstream of six galactose-inducible genes of Saccharomyces cerevisiae on the basis of (i) protection in DNAse I footprints, (ii) loss of protection when excess GAL4-binding oligonucleotide is added and (iii) homology with a 23-bp dyad-symmetric consensus sequence.
(17) The distance from spouse (or partner) repeats within the marital dyad the lack of closeness to parents experienced in adolescence.
(18) Mothers in B2 and B3 dyads were rated more sensitive and responsive than all others at all 4 observations.
(19) Maternal stimulation and co-ordinated infant signalling in AGA dyads, and infant quietness and maternal activity encouraging quietness in SGA dyads, were patterns in high-scoring subjects.
(20) Encouragement of open, direct communication between members of a dyad may produce favorable or unfavorable results, depending upon the situation.
Span
Definition:
() imp. & p. p. of Spin.
(v. t.) The space from the thumb to the end of the little finger when extended; nine inches; eighth of a fathom.
(v. t.) Hence, a small space or a brief portion of time.
(v. t.) The spread or extent of an arch between its abutments, or of a beam, girder, truss, roof, bridge, or the like, between its supports.
(v. t.) A rope having its ends made fast so that a purchase can be hooked to the bight; also, a rope made fast in the center so that both ends can be used.
(v. t.) A pair of horses or other animals driven together; usually, such a pair of horses when similar in color, form, and action.
(v. t.) To measure by the span of the hand with the fingers extended, or with the fingers encompassing the object; as, to span a space or distance; to span a cylinder.
(v. t.) To reach from one side of to the order; to stretch over as an arch.
(v. t.) To fetter, as a horse; to hobble.
(v. i.) To be matched, as horses.
(imp.) of Spin
Example Sentences:
(1) In addition, DDT blocked succinate dehydrogenase and the cytochrome b-c span of the electron transport chain, which also secondarily reduced ATP synthesis.
(2) The extent of the infectious process was limited, however, because the life span of the cultures was not significantly shortened, the yields of infectious virus per immunofluorescent cell were at all times low, and most infected cells contained only a few well-delineated small masses of antigen, suggestive of an abortive infection.
(3) Three overlapping clones, spanning a total of 19 kb of the human SC gene, including 3 kb of the 5' flanking region, were characterized.
(4) We have evaluated the life-span of B lymphocytes by measuring the functional reactivity of normal B cells upon transfer into xid mice, which do not respond to anti-mu, fluoresceinated-Ficoll (FL-Ficoll) and 2,4,6-trinitrophenyl aminoethylcarbamylmethyl Ficoll (TNP-Ficoll).
(5) Median effect analysis was applied for the evaluation of in vitro effect by the growth inhibition, and the in vivo effect by comparison of the increase of life span (ILS) in a combined group with the sum of ILS's in 2 single agent groups.
(6) These data indicate that the development of HCC in HBV-negative alcoholics with cirrhosis occurs in relation to the development of macronodules and loss of liver weight, most likely along with the prolongation of the life span.
(7) We then used synthetic peptides spanning the active fragment to identify the primary sequence of the adhesive site as Leu-Arg-Glu (LRE): neurons attach to an immobilized LRE-containing peptide, and soluble LRE blocks attachment of neurons to the s-laminin fragment.
(8) After cessation of exposures, HEVal was lost faster than predicted by the normal erythrocyte life span alone.
(9) The antibiotic was effective against Gram-positive bacteria, fungi and yeasts, and prolonged the life span of mice bearing Ehrlich ascites carcinoma.
(10) The mean red cell life span increased from 13 days before treatment to 21.6 days after 3 mo of carbamylation.
(11) Analysis of mRNA life span by using actinomycin D demonstrates that PPET-1 mRNA has a short intracellular half-life of about 15 min and is superinduced by cycloheximide.
(12) Respiration-related neurons were classified with respect to the correlation of their activity with the activity of the phrenic nerve: phase-bound inspiratory (I) and expiratory (E) neurones and phase-spanning expiratory-inspiratory and inspiratory-expiratory neurones were discriminated.
(13) The cytoplasmic and membrane spanning domains of galactosyltransferase were found to be sufficient to retain all of the hybrid invariant chain in trans Golgi cisternae as judged by indirect immunofluorescence, treatment with brefeldin A and immuno-electron microscopy.
(14) Selection limits for scutellar bristles in lines M and M2 were equal to or greater than the most extreme reported in the literature.-The probit span of the canalised 4 bristle class decreased in each selection line as the mean scutellar bristle number increased, and increased again in the relaxed lines as the mean bristle number decreased.
(15) The predicted yeast enzyme contains at least four potential membrane-spanning regions and several shorter hydrophobic regions that align exactly with similar sequences in the rat liver protein.
(16) cDNA was prepared by reverse transcription of peripheral blood mRNA and amplified by the polymerase chain reaction (PCR) using primers corresponding to sequences 400 bp apart on the cDNA, spanning the last three exons (X, Y, Z) of the beta-Sp gene.
(17) The biologically active unit spans about 16 kilobase pairs (kbp) and is composed of seven exons and six introns.
(18) The present study extended this effort to a noninstitutionalized life-span sample of males and females in six age groups (fourteen to ninety-four).
(19) This altered region spans the normal site of autocatalytic proteolysis that occurs at the same time as (enzymatic) activation of prochymosin at acidic pH.
(20) Moreover, no increase in cAMP can be detected over an extended time span.