(n.) The hypothetical radical PH4, analogous to ammonium, and regarded as the nucleus of certain derivatives of phosphine.
Example Sentences:
(1) It is also found to be sensitive to inhibition by tetraphenyl phosphonium, magnesium, and ruthenium red.
(2) The accumulation of lipophilic cation radiolabeled tri-phenylmethyl phosphonium (TPMP+) was utilized to determine the resting membrane potential across the plasma membrane psi.
(3) The state of the skeleton was studied in 62 patients with otosclerosis to investigate diagnostic potentialities of 99mTc-phosphonium, of them in 34 patients the diagnosis was confirmed at operation.
(4) The stimulation of AIB transport following ouabain removal was largely abolished by a proton ionophore (1799), a lipophilic cation (tetraphenyl-phosphonium), or ouabain.
(5) These compounds were prepared by modification of the Corey prostaglandin synthesis utilizing as a key step condensation of known hemiacetals with the ylide derived from the requisite substituted phosphonium salts.
(6) The fatty acid composition of the resulting phosphonium phosphatidylcholine is similar to that of phosphatidylcholine.
(7) The phosphonium ions used here promote desensitization of the receptor, as judged by the binding rate of the fluorescent agonist NBDA-C5-acylcholine or alpha-bungarotoxin.
(8) The procedure starts with readily available aldehydes or ketones and the common intermediate p-bromobenzyltriphenyl-phosphonium bromide in a Wittig reaction and proceeds in good yield through p-bromostyrene and p-cyanostyrene intermediates.
(9) An electrode sensitive to tetraphenyl phosphonium (TPP+) was applied to monitor the changes in the membrane potential of the ciliate Blepharisma japonicum during the process of cell elongation.
(10) Evidence consistent with the operation of a single efflux system for compounds such as phosphonium ions, phenanthridiniums and flavines is presented.
(11) Overshoot can be diminished but not suppressed by a proton-conducting uncoupler, carbonyl cyanide m chlorophenylhydrazone, (CCCP) and by a liposoluble cation, triphenyl-methyl phosphonium (TPMP+).
(12) The transmembrane potential, as measured from the equilibrium distribution of tritiated triphenylmethyl phosphonium and by using the fluorescent probe, Di-S-C3(5), is approximately -37 millivolts.
(13) The average membrane potential was estimated by measuring the uptake of [3H]tetraphenyl phosphonium ([3H]Ph4P+).
(14) Uptake of the lipophilic cation tetraphenyl phosphonium was largely abolished by addition of magainin A and PGLa showed synergism with respect to release of respiratory control.
(15) In the suspension of cytochrome oxidase proteoliposome the uptake of a cationic penetrant (tetraphenyl phosphonium cation) was found to be coupled with electron transfer via external cytochrome c. Electron transfer via intraproteoliposomal cytochrome c induced the uptake of anionic penetrants (tetraphenyl borate and phenyldicarbaundecaborane anions).
(16) As judged by the uptake of the voltage-sensitive probe [3H]triphenylmethyl phosphonium we observed a close correlation between conditions which inhibit virus infection and which cause depolarization of the cells.
(17) The rate of synthesis and degradation of phosphatidylcholine and of the phosphonium analogue are similar.
(18) Several radioiodinated iodopentenyl-trisubstituted phosphonium, arsonium, and ammonium iodides have been prepared and evaluated in rats to determine the effects of structural variations of the cations on myocardial uptake and retention.
(19) The activation energy for both the porphyrin and phosphonium cation induced conductance is more positive than that of the tetraphenylboride conductance.
(20) We have synthesized 20,20,20-trifluoroarachidonic acid by the cis-selective Wittig reaction of the C12-C20 fragment with phosphonium salt.
Positively
Definition:
(adv.) In a positive manner; absolutely; really; expressly; with certainty; indubitably; peremptorily; dogmatically; -- opposed to negatively.
Example Sentences:
(1) The bank tellers who saw their positions filled by male superiors took special pleasure in going to the bank and keeping them busy.
(2) 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.
(3) None of the strains was found to be positive for cytotoxic enterotoxin in the GM1-ELISA.
(4) The patterns observed were: clusters of granules related to the cell membrane; positive staining localized to portions of the cell membrane, and, less commonly, the whole cell circumference.
(5) In 49 cases undergoing systemic lymphadenectomy 32 were found to have glandular involvement, of which both aortic and pelvic nodes were positive in 17 cases (53.1%), aortic nodes positive but pelvic negative in six (18.8%), and pelvic nodes positive but aortic negative in nine (28.1%).
(6) The Na+ ionophore, gramicidin, had a small but significant inhibitory effect on Na(+)-dependent KG uptake, demonstrating that KG uptake was not the result of an intravesicular positive Na+ diffusion potential.
(7) Fecal occult blood was positive in 4 patients and fecal leukocytes were positive in one patient.
(8) We have determined the genomic structure of the fosB gene and shown that it consists of 4 exons and 3 introns at positions also found in the c-fos gene.
(9) An unsaturated fatty acid auxotroph of Escherichia coli was grown with a series of cis-octadecenoate isomers in which the location of the double bond varied from positions 3 to 17.
(10) It is concluded that amlodipine reduces myocardial ischemic injury by mechanism(s) that may involve a reduction in myocardial oxygen demand as well as by positively influencing transmembrane Ca2+ fluxes during ischemia and reperfusion.
(11) Stimulation is also observed with mixtures of APC expressing DPw3 and APC expressing A1, and likewise, DPw3+ APC become stimulatory when preincubated with supernatants from A1-positive cells.
(12) Nine of 14 patients studied for documented clinical relapse had positive repeat studies.
(13) Ca2+ transport was positively correlated with MR cell density.
(14) At pH 7.0, reduction is complete after 6 to 10 h. These results together with an earlier study concerning the positions of the two most readily reduced bonds (Cornell J.S., and Pierce, J.G.
(15) A quadripolar catheter was positioned either at the site of earliest ventricular activation during induced monomorphic ventricular tachycardia or at circumscribed areas of the left ventricle.
(16) Fifteen sera ICA-IgG and ICA-protein A positive with high titres remained positive thereafter.
(17) These data indicate that RNA faithfully transfers "suppressive" as well as "positive" types of immune responses that have been reported previously for lymphocytes obtained directly from tumour-bearing and tumour-immune animals.
(18) Induction of labor, based upon only (1) a finding of meconium in the amniocentesis group or (2) a positive test in the OCT group, was nearly three times more frequent in the amniocentesis group.
(19) Mike Ashley told Lee Charnley that maybe he could talk with me last week but I said: ‘Listen, we cannot say too much so I think it’s better if we wait.’ The message Mike Ashley is sending is quite positive, but it was better to talk after we play Tottenham.” Benítez will ask Ashley for written assurances over his transfer budget, control of transfers and other spheres of club autonomy, but can also reassure the owner that the prospect of managing in the second tier holds few fears for him.
(20) When subjects centered themselves actively, or additionally, contracted trunk flexor or extensor muscles to predetermined levels of activity, no increase in trunk positioning accuracy was found.