(n.) A white or pinkish crystalline substance, C6H5OH, produced by the destructive distillation of many organic bodies, as wood, coal, etc., and obtained from the heavy oil from coal tar.
(n.) Any one of the series of hydroxyl derivatives of which phenol proper is the type.
Example Sentences:
(1) The teeth were embedded in phenolic rings with acrylic resin.
(2) The presence of the expected C19 neutral and C18 phenolic steroids was confirmed.
(3) The effect of mycobacterial phenolic glycolipids from Mycobacterium leprae, M. bovis BCG, and M. kansasii on in vitro proliferative responses by human blood mononuclear cells from healthy BCG vaccinees was investigated.
(4) The chemistry involved reaction rate constant measurements of MSF hydrolysis and for reactions with phenolic, amine, oxime, hydroxamic acid, phenyl N-hydroxycarbamate, and hydroxylamine compounds and cupric imidazole and bipyridyl complexes.
(5) In the liver, the major site of benzene metabolism, benzene is converted by a cytochrome P-450-mediated pathway to phenol, the major metabolite, and the secondary metabolites, hydroquinone and catechol.
(6) Except in the case of the phenolic metabolite, structures were confirmed by direct comparison of electron impact mass spectra and chromatographic behaviour with those of authentic samples.
(7) It may be concluded that phenolization of the sympathetic nervous system provides the same results as surgical sympathectomy but has the advantage of lower morbidity and shorter hospitalization (24 h vs 10 days).
(8) It was hypothesized that the observed activity variation of the paracetamol analogues was based on the relative abilities of these compounds to undergo H atom loss at the phenolic oxygen, and on the relative stabilities of the resulting free-radical species.
(9) Lipopolysaccharide content correlated significantly with drug uptake and sensitivity, and it appeared to determine the degree of penetration of the cell envelope by these chlorinated phenols.
(10) Liberation of the polysaccharides from the carrier by treatment with aqueous phenol resulted in loss of the serological activity.
(11) Here we report that phenol hydroxylation to hydroquinone is also catalyzed by human myeloperoxidase in the presence of a superoxide anion radical generating system, hypoxanthine and xanthine oxidase.
(12) The 2-substituted phenoxy-6-methoxy-8-aminoquinolines (4-6) were afforded by reduction of the corresponding 8-nitroquinolines (1-3) which were obtained by condensation of 2-chloro-6-methoxy-8-nitroquinoline and substituted phenols.
(13) This report reviews the treatment of pilonidal sinus by phenol injection in 54 patients.
(14) One group of rats was made immunocompetent towards P. aeruginosa by intraperitoneal injection of phenol-killed P. aeruginosa while a second group remained naive to this organism.
(15) These data indicate that the phenolic hydroxyl groups of xanthomegnin might contribute to its uncoupling action on the oxidative phosphorylation of mitochondria.
(16) The coupled dienone-phenol re-arrangement and keto-enol tautomerism of this quinone methide produce the observed 3,4-dihydroxybenzaldehyde.
(17) The phenol metabolites benzoquinone and 1,2,4-benzenetriol both activated the glutathione transferase in microsomes 2-fold independently of added NADPH.
(18) The isolation of plant enzymes is frequently hampered by the presence of phenolic compounds, pigments and mucilages.
(19) An enzyme (EC 2.8.2.1) that catalyses the transfer of sulphate from adenosine 3'-phosphate 5'-sulphatophosphate to phenols was purified approx.
(20) Physico-chemical parameters of membranes of skeletal muscles' sarcoplasmic reticulum in antioxidant insufficiency, which was modelled by excluding alpha-tocopherol from the animals ration, and after treatment with phenol antioxidant ionol were studied.
Ring
Definition:
(v. t.) To cause to sound, especially by striking, as a metallic body; as, to ring a bell.
(v. t.) To make (a sound), as by ringing a bell; to sound.
(v. t.) To repeat often, loudly, or earnestly.
(v. i.) To sound, as a bell or other sonorous body, particularly a metallic one.
(v. i.) To practice making music with bells.
(v. i.) To sound loud; to resound; to be filled with a ringing or reverberating sound.
(v. i.) To continue to sound or vibrate; to resound.
(v. i.) To be filled with report or talk; as, the whole town rings with his fame.
(n.) A sound; especially, the sound of vibrating metals; as, the ring of a bell.
(n.) Any loud sound; the sound of numerous voices; a sound continued, repeated, or reverberated.
(n.) A chime, or set of bells harmonically tuned.
(n.) A circle, or a circular line, or anything in the form of a circular line or hoop.
(n.) Specifically, a circular ornament of gold or other precious material worn on the finger, or attached to the ear, the nose, or some other part of the person; as, a wedding ring.
(n.) A circular area in which races are or run or other sports are performed; an arena.
(n.) An inclosed space in which pugilists fight; hence, figuratively, prize fighting.
(n.) A circular group of persons.
(n.) The plane figure included between the circumferences of two concentric circles.
(n.) The solid generated by the revolution of a circle, or other figure, about an exterior straight line (as an axis) lying in the same plane as the circle or other figure.
(n.) An instrument, formerly used for taking the sun's altitude, consisting of a brass ring suspended by a swivel, with a hole at one side through which a solar ray entering indicated the altitude on the graduated inner surface opposite.
(n.) An elastic band partly or wholly encircling the spore cases of ferns. See Illust. of Sporangium.
(n.) A clique; an exclusive combination of persons for a selfish purpose, as to control the market, distribute offices, obtain contracts, etc.
(v. t.) To surround with a ring, or as with a ring; to encircle.
(v. t.) To make a ring around by cutting away the bark; to girdle; as, to ring branches or roots.
(v. t.) To fit with a ring or with rings, as the fingers, or a swine's snout.
(v. i.) To rise in the air spirally.
Example Sentences:
(1) The Tyr side chain had two conformations of comparable energy, one over the ring between the Gln and Asn side chains, and the other with the Tyr side chain away from the ring.
(2) Sterile, pruritic papules and papulopustules that formed annular rings developed on the back of a 58-year-old woman.
(3) The teeth were embedded in phenolic rings with acrylic resin.
(4) Surgical removal was avoided without complications by detaching it with a ring stripper.
(5) The Labour MP urged David Cameron to guarantee that officers who give evidence over the alleged paedophile ring in Westminster will not be prosecuted.
(6) These results coupled with previous studies support activation of benz[j]aceanthrylene via both 2 and cyclopenta ring epoxidation.
(7) TK1 showed the most restricted substrate specificity but tolerated 3'-modifications of the sugar ring and some 5-substitutions of the pyrimidine ring.
(8) Endothelium-dependent relaxations to acetylcholine and endothelium-independent relaxations to nitric oxide were observed in rings from both strains during contraction with endothelin.
(9) Aortic rings from the rabbit were similarly potently antagonized by the protein kinase C inhibitors, however, K(+)-induced contractions were also equally sensitive to these agents in both rat and rabbit tissues.
(10) The intracellular distribution and interaction of 19S ring-type particles from D. melanogaster have been analysed.
(11) Rings of isolated coronary and femoral arteries (without endothelium) were suspended for isometric tension recording in organ chambers filled with modified Krebs-Ringer bicarbonate solution.
(12) In all cases Richter's hernia was at the internal inguinal ring.
(13) Seventy-five hands showed normal distal latency, in which cases, however, the SNCV of the ring finger was always outside the normal range, while the SNCVs of the thumb, index and middle fingers were abnormal in 64%, 80% and 92% of cases respectively.
(14) The cells are predominantly monopolar, tightly packed, and are flattened at the outer border of the ring.
(15) Defects in the posterior one-half of the trachea, up to 5 rings long, were repaired, with minimal stenosis.
(16) A new analog of salmon calcitonin (N alpha-propionyl Di-Ala1,7,des-Leu19 sCT; RG-12851; here termed CTR), which lacks the ring structure of native calcitonin, was tested for biological activity in several in vitro and in vivo assay systems.
(17) The chemical shift changes observed on the binding of trimethoprim to dihydrofolate reductase are interpreted in terms of the ring-current shift contributions from the two aromatic rings of trimethoprim and from that of phenylalanine-30.
(18) Three strains of fluorescent pseudomonads (IS-1, IS-2, and IS-3) isolated from potato underground stems with roots showed in vitro antibiosis against 30 strains of the ring rot bacterium Clavibacter michiganensis subsp.
(19) Both adiphenine.HCl and proadifen.HCl form more stable complexes, suggesting that hydrogen bonding to the carbonyl oxygen by the hydroxyl-group on the rim of the CD ring could be an important contributor to the complexation.
(20) Serial sections from over a hundred such structures show that these are tubular structures and that the 'test-tube and ring-shaped' forms described in the literature are no more than profiles one expects to see when a tubular structure is sectioned.