(n.) A white amorphous horny substance forming the harder part of the outer integument of insects, crustacea, and various other invertebrates; entomolin.
Example Sentences:
(1) The effect of O-(carboxymethyl)chitins (CM-chitins) on the activation of mouse-peritoneal macrophages in vivo and their mitogenic activity on mouse spleen-cells were investigated.
(2) The pH activity profile, cofactor requirements, and kinetic parameters of the endogenously activated chitin synthase were identical to those of the trypsin-activated enzyme in protoplast membranes.
(3) Results obtained from isotopic dilution experiments are consistent with the operation of the chitin pathway as it has been established in fungal preparations.
(4) The significance of these results is discussed in connection with the mechanism of chitin synthesis and cell wall morphogenesis in S. cerevisiae.
(5) Here we show that the nodulation genes of this bacterium determine the production of a large family of Nod-factors which are N-acylated chitin pentamers carrying a variety of substituents.
(6) In a permeabilized-cell assay, Oct-Gln-UPOC had a 10-fold-lower inhibitory activity toward chitin synthetase than did the Oct-Lys-UPOC analog.
(7) The preparation yielded an apparent Km of 3.9 mg chitin ml-1 [17.6 mM-N-acetylglucosamine (GlcNAc) equivalents] and V of 2.3 nmol GlcNAc formed min-1 (mg protein)-1.
(8) In the case of the [14C]chitin synthesized, which does not show inhibition by alpha factor, the lowering of the specific activity of the precursor is exactly compensated for by an increased rate of chitin synthesis caused by alpha factor.
(9) Chitin derivatives are also used in things like contact lens, surgical stitches and artificial skin.
(10) The inhibitor was effective against crude or purified (chitosome) preparations of chitin synthetase.
(11) After 3 h incubation with tioconazole, 1 microgram ml-1, the incorporation of the radiolabelled glucose into chitin of intact cells and regenerating spheroplasts of C. albicans was inhibited by 43% and 30%, respectively.
(12) Electron microscopy has revealed that chitin from a representative selection of insect orders (plus one crustacean and one arachnid) is localized in crystallites about 2.8 nm across.
(13) When dividing cells of Saccharomyces cerevisiae were exposed to the polysaccharide-binding dye Congo red, the walls and septa became sites of chitin accumulation.
(14) Partially O-hydroxyethylated chitin (glycol chitin) was used as a substrate in the purification and characterization of this enzyme.
(15) In view of the small molecular size and high lipid solubility of methyl mercury and the lipophilic properties of the chitin-protein exoskeleton of the lobster, it is likely that significant uptake directly from the water as well as storage of absorbed methyl mercury occurred in the tail region.
(16) This confirmed that S. pombe cell wall is devoid of chitin.
(17) Adjuvant activity of chitin derivatives was examined in guinea-pigs and mice.
(18) DFB inhibits chitin synthesis and growth of imaginal epidermis in insects and suppresses melanogenesis and uptake of nucleosides in mouse melanoma cells, but the means of cell growth regulation and the role of metabolism of DFB in such regulation have not been established.
(19) These microfibers have a diameter of 80 A and may consist of chitin crystallites surrounded by a matrix coat.
(20) Chemical analysis of adult females of Onchocerca gibsoni gave estimated chitin contents of 200-500 micrograms (g dry weight)-1.
Scale
Definition:
(n.) The dish of a balance; hence, the balance itself; an instrument or machine for weighing; as, to turn the scale; -- chiefly used in the plural when applied to the whole instrument or apparatus for weighing. Also used figuratively.
(n.) The sign or constellation Libra.
(v. t.) To weigh or measure according to a scale; to measure; also, to grade or vary according to a scale or system.
(n.) One of the small, thin, membranous, bony or horny pieces which form the covering of many fishes and reptiles, and some mammals, belonging to the dermal part of the skeleton, or dermoskeleton. See Cycloid, Ctenoid, and Ganoid.
(n.) Hence, any layer or leaf of metal or other material, resembling in size and thinness the scale of a fish; as, a scale of iron, of bone, etc.
(n.) One of the small scalelike structures covering parts of some invertebrates, as those on the wings of Lepidoptera and on the body of Thysanura; the elytra of certain annelids. See Lepidoptera.
(n.) A scale insect. (See below.)
(n.) A small appendage like a rudimentary leaf, resembling the scales of a fish in form, and often in arrangement; as, the scale of a bud, of a pine cone, and the like. The name is also given to the chaff on the stems of ferns.
(n.) The thin metallic side plate of the handle of a pocketknife. See Illust. of Pocketknife.
(n.) An incrustation deposit on the inside of a vessel in which water is heated, as a steam boiler.
(n.) The thin oxide which forms on the surface of iron forgings. It consists essentially of the magnetic oxide, Fe3O4. Also, a similar coating upon other metals.
(v. t.) To strip or clear of scale or scales; as, to scale a fish; to scale the inside of a boiler.
(v. t.) To take off in thin layers or scales, as tartar from the teeth; to pare off, as a surface.
(v. t.) To scatter; to spread.
(v. t.) To clean, as the inside of a cannon, by the explosion of a small quantity of powder.
(v. i.) To separate and come off in thin layers or laminae; as, some sandstone scales by exposure.
(v. i.) To separate; to scatter.
(n.) A ladder; a series of steps; a means of ascending.
(n.) Hence, anything graduated, especially when employed as a measure or rule, or marked by lines at regular intervals.
(n.) A mathematical instrument, consisting of a slip of wood, ivory, or metal, with one or more sets of spaces graduated and numbered on its surface, for measuring or laying off distances, etc., as in drawing, plotting, and the like. See Gunter's scale.
(n.) A series of spaces marked by lines, and representing proportionately larger distances; as, a scale of miles, yards, feet, etc., for a map or plan.
(n.) A basis for a numeral system; as, the decimal scale; the binary scale, etc.
(n.) The graduated series of all the tones, ascending or descending, from the keynote to its octave; -- called also the gamut. It may be repeated through any number of octaves. See Chromatic scale, Diatonic scale, Major scale, and Minor scale, under Chromatic, Diatonic, Major, and Minor.
(n.) Gradation; succession of ascending and descending steps and degrees; progressive series; scheme of comparative rank or order; as, a scale of being.
(n.) Relative dimensions, without difference in proportion of parts; size or degree of the parts or components in any complex thing, compared with other like things; especially, the relative proportion of the linear dimensions of the parts of a drawing, map, model, etc., to the dimensions of the corresponding parts of the object that is represented; as, a map on a scale of an inch to a mile.
(v. t.) To climb by a ladder, or as if by a ladder; to ascend by steps or by climbing; to clamber up; as, to scale the wall of a fort.
(v. i.) To lead up by steps; to ascend.
Example Sentences:
(1) The clinical usefulness of neonatal narcotic abstinence scales is reviewed, with special reference to their application in treatment.
(2) Since the start of this week, markets have been more cautious, with bond yields in Spain reaching their highest levels in four months on Tuesday amid concern about the scale of the austerity measures being imposed by the government and fears that the country might need a bailout.
(3) During the chronic phase, pain was assessed using visual analogue scales at 8 AM and 4 PM daily.
(4) Implications of the theory for hypothesis testing, theory construction, and scales of measurement are considered.
(5) The spatial spread or blur parameter of the blobs was adopted as a scale parameter.
(6) A full-scale war is unlikely but there is clear concern in Seoul about the more realistic threat of a small-scale attack on the South Korean military or a group of islands near the countries' disputed maritime border in the Yellow Sea.
(7) While both inhibitors caused thermosensitization, they did not affect the time scale for the development of thermotolerance at 42 degrees C or after acute heating at 45 degrees C. The inhibitors of poly(ADP-ribosylation) radiosensitizers and thermosensitizers may be of use in the treatment of cancer using a combined modality of radiation and hyperthermia.
(8) The move to an alliance model is not only to achieve greater scale and reach, although growing from 15 partner organisations to 50 members is not to be sniffed at.
(9) However, the effects of such large-scale calvarial repositioning on subsequent brain mass growth trajectories and compensatory cranio-facial growth changes is unclear.
(10) The usefulness of the proposed method is obvious in cases where the composition of a precipitate on LM scale is to be compared with the LM appearance of the surrounding tissue.
(11) Meanwhile Ed Miliband, the Labour leader, waiting anxiously for news of the scale of the Labour advance in his first nationwide electoral test, will urge the electorate not to be duped by the promise of a coalition mark 2, predicting sham concessions by the Conservatives .
(12) Potential revisions of the scale, as well as cautions for its use in clinical applications on its present form are discussed.
(13) High score on the hysteria scale of Middlesex Hospital Questionnaire was a risk indicator for all kinds of back pain.
(14) Assessments were made daily by patients, using visual analogue scales, of their pain levels at rest, at night and on activity, and of the limitation of their activity.
(15) Physicians and adolescents differed significantly in the ratings of all but one scale, weight.
(16) There are questions with regard to the interpretation of some of the newer content scales of the MMPI-2, whereas most clinicians feel comfortably familiar, even if not entirely satisfied, with the Wiggins Content Scales of the MMPI.
(17) Six patients showed an improvement greater than 50% on the Hamilton Depression Rating Scale.
(18) The system of automated diagnosis makes it possible to significantly increase the quality and efficacy of wide-scale prophylactic check-ups of the population.
(19) Meanwhile, the efficacy and side effects were observed clinically by using scale (BRMS, CGI and TESS).
(20) The norms are reported as "Scaled Score Equivalents of Raw Scores" for each age group and as "IQ Equivalents of Sums of Scaled Scores."