What's the difference between ring and useful?

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.

Useful


Definition:

  • (a.) Full of use, advantage, or profit; producing, or having power to produce, good; serviceable for any end or object; helpful toward advancing any purpose; beneficial; profitable; advantageous; as, vessels and instruments useful in a family; books useful for improvement; useful knowledge; useful arts.

Example Sentences:

  • (1) Previous use of the drug is found in more than 50 per cent of the patients, and it was often followed by a neglected side-effect.
  • (2) These variants may serve as useful gene markers in alcohol research involving animal model studies with inbred strains in mice.
  • (3) Therefore, these findings may extend the use of platelets as neuronal models.
  • (4) All transplants were performed using standard techniques, the operation for the two groups differing only as described above.
  • (5) The resulting dose distribution is displayed using traditional 2-dimensional displays or as an isodose surface composited with underlying anatomy and the target volume.
  • (6) It was tested for recovery and separation from other selenium moieties present in urine using both in vivo-labeled rat urine and human urine spiked with unlabeled TMSe.
  • (7) A study revealed that the percentage of active sperm in semen 30 seconds after ejaculation was 10.3% when a nonoxynol 9 latex condom was used as opposed to 55.9% in a nonspermicidal condom.
  • (8) A series of human cDNA clones of various sizes and relative localizations to the mRNA molecule were isolated by using the human p53-H14 (2.35-kilobase) cDNA probe which we previously cloned.
  • (9) We used the polymerase chain reaction (PCR) to amplify the breakpoint area of alpha-thalassemia-1 of Southeast Asia type and several parts of the alpha-globin gene cluster to make a differential diagnosis between alpha-thalassemia-1 and Hb Bart's hydrops fetalis.
  • (10) The liver metastasis was produced by intrasplenic injection of the fluid containing of KATOIII in nude mouse and new cell line was established using the cells of metastatic site.
  • (11) Spectral analysis of spontaneous heart rate fluctuations, a powerful noninvasive tool for quantifying autonomic nervous system activity, was assessed in Xenopus Laevis, intact or spinalized, at different temperatures and by use of pharmacological tools.
  • (12) The hypothesis that proteins are critical targets in free radical mediated cytolysis was tested using U937 mononuclear phagocytes as targets and iron together with hydrogen peroxide to generate radicals.
  • (13) Questionnaires were used and the respondent self-designation method measured leadership.
  • (14) At 36 h postsurgery, RBCs were examined by 23Na-NMR by using dysprosium tripolyphosphate as a chemical shift reagent.
  • (15) Biochemical, immunocytochemical and histochemical methods were used to study the effect of chronic acetazolamide treatment on carbonic anhydrase (CA) isoenzymes in the rat kidney.
  • (16) Use of the improved operative technique contributed to reduction in number of complications.
  • (17) Down and up regulation by peptides may be useful for treatment of cough and prevention of aspiration pneumonia.
  • (18) Our data suggest that a rational use of surveillance cultures and serological tests may aid in an earlier diagnosis of FI in BMT patients.
  • (19) Using monoclonal antibodies directed against the plasma membrane of Madin-Darby canine kidney (MDCK) cells, we demonstrated previously that a glycoprotein with an Mr = 23,000 (gp23) had a non-polarized cell surface distribution and was observed on both the apical and basolateral membranes (Ojakian, G. K., Romain, R. E., and Herz, R. E. (1987) Am.
  • (20) Models able to describe the events of cellular growth and division and the dynamics of cell populations are useful for the understanding of functional control mechanisms and for the theoretical support for automated analysis of flow cytometric data and of cell volume distributions.