(a.) Without color; not distinguished by any hue; transparent; as, colorless water.
(a.) Free from any manifestation of partial or peculiar sentiment or feeling; not disclosing likes, dislikes, prejudice, etc.; as, colorless music; a colorless style; definitions should be colorless.
Example Sentences:
(1) The pI 5.0 component, designated F-5.0, was faint yellow, with a broad absorption in the range of 400-450 nm, while the pI 7.5 component, designated F-7.5, was colorless and did not absorb in that range.
(2) L-form colonies appeared colorless, and chemical analysis demonstrated that, if the L-form produces pigment at all, which was not demonstrated, it could not have been more than 3.6% of that produced by the bacterial form.
(3) We have purified this colorless compound and identified it as 5,6-dihydroxyindole-2-carboxylic acid.
(4) Aldol condensation and dehydration of 2 mol of the saturated aldehydes initially gave the alpha, beta-unsaturated aldehydes, which in turn reacted with TBA to form the colorless adducts, pyranopyrimidine derivatives.
(5) Ten days after the insertion, samples of clear and colorless CSF up to 1 ml could be withdrawn.
(6) The activities of phosphofructokinase (PFK), fructose diphosphatase (FDP), nicotinamide adenine dinucleotide (NAD) and NAD phosphate (NADP)-linked isocitrate dehydrogenases (IDHNAD, IDHNADP), two NAD-linked glutamate dehydrogenases (GDH1, GDH2), and isocitrate lyase were studied during the development of the two phenotypes, ordinary colorless and resistant sporangia (OC and RS plants), of water mold Blastocladiella emersonii in synchronized liquid cultures.
(7) AchE synthesized in culture cleaved acetylthiocholine to thiocholine, which stochiometrically reduced the colorless indicator DTNB to a highly colored product.
(8) Mutants or colonial variants have been isolated that fail to absorb the dye and produce colorless colonies.
(9) The pH optimum for the reaction was between 4 and 7, and the temperature optimum was between 30 and 50 degrees C. The compound was purified by ion-exchange chromatography, isolated as colorless needles, and identified as 6-hydroxypyridoxine from UV, PMR, IR and MS spectral data.
(10) Infected cell monolayers stained intensely while uninfected monolayers remained colorless.
(11) Colorless and other subtle manifestations of peritoneal disease can be seen more easily by painting the peritoneal surface with bloody peritoneal fluid.
(12) The antibiotic, obtained as a colorless amorphous powder having the molecular formula C48H77N7O16, is an antifungal antibiotic active against yeasts and filamentous fungi.
(13) It was purified by use of column chromatography on Sepabeads SP206, Amberlite IRC-50, MCI gel CHP-20P and Sephadex G-10 and then isolated as colorless needles.
(14) The final product was readily soluble, clear and almost colorless upon reconstitution.
(15) The nearly colorless final macrocyclic product was characterized by TLC, IR, NMR, and mass spectrometry.
(16) The cone type with the colorless fluorescent oil droplet (FC cone) has an oil droplet size intermediate between those contained in the green single cones and the cone with the clear colorless oil droplet (CC cone); it typically has a short (15 microns long) oblique axon and it forms approximately 13% of the cones in the retina.
(17) It was purified by column chromatography and centrifugal partition chromatography (CPC) and then was isolated as a colorless powder.
(18) Elasnin is a neutral, colorless, and viscous oil (ND17 = 1.4983, [alpha]18D -0.9 degrees, lambdaEtOHmax 291 nm (epsilon, 7,760) having a molecular formula of C24H40O4 (MW 392) as shown by its elemental analysis and mass spectrum.
(19) Lenses exposed to 308-nm ultraviolet (UV) radiation for 10-30 minutes showed significant yellow-brown pigmentation and colorless opacification compared with dark controls.
(20) There is a new radiochromic film, a highly uniform, thin (100-microns) detector whose sensitive layer (6 microns thick) changes from colorless to blue by dye polymerization without processing, upon exposure to ionizing radiation.
Helium
Definition:
(n.) A gaseous element found in the atmospheres of the sun and earth and in some rare minerals.
Example Sentences:
(1) Irradiation of the skin overlying the median nerve at the wrist in humans with a low power (1 mW; 632.5 nm) helium-neon laser produced a somatosensory evoked potential obtained at Erb's point.
(2) To determine if computed tomography (CT) can accurately measure lung volume, we compared lung gas volume measured by helium dilution with the equivalent volume calculated from CT total lung volume and density in 13 supine dogs.
(3) The biological effects of the helium-neon (He-Ne) laser on skin and oral mucosa were examined for the first time electron microscopically.
(4) For the estimation and correction of errors in the measurement of the respiratory flow with viscosity-affected respiratory flow receptors the viscosity of natural respiratory gases (N2, O2, CO2, H2O) and of the ternary system helium-oxygen-nitrogen, which is of importance in pulmonary function diagnosis, was determined.
(5) It uses neutron irradiation and subsequent measurements of helium 3 and helium 4 in a static mass spectrometer.
(6) The effects of helium and argon, inert gases, on oxygen consumption have been studied on liver tissue of white rats who were delivered different fatty products plus to basic food).
(7) Experiments were performed in a cylinder full of beads open at one end and closed at the other in which a mixture of oxygen with helium or argon or sulphur hexafluoride could diffuse with ambient air through the open end.
(8) We hypothesized that the use of dilutant gases, as helium (He) or hydrogen (H2), having low density but high specific heat compared to nitrogen, could change the TE vs TI regression.
(9) In eight of the 13 patients studied the baseline ratio of expiratory flow at 50% vital capacity (VC) breathing helium-oxygen (V50He) to V50air was over 1.20 and they were called responders; the remaining five patients were called non-responders.
(10) Physiologic studies included maximal expiratory flow volume curves with air and helium-oxygen mixtures.
(11) 7, 14, 19 and 31 atmosphere absolute (ATA) with helium-oxygen or helium-nitrogen-oxygen have been performed at the Japan Marine Science and Technology Center.
(12) At the 50 per cent embryonic survival level, helium ion r.b.e.
(13) Similar exercise in 25.5 degrees C water, breathing helium tri-mix (gas density less than air), produced higher VE but lower VO2 when compared to air breathing.
(14) In a third group of subjects we compared helium flux blood flow (stripped skin) to laser doppler velocimetric (LDV) measurements (intact skin) at adjacent skin sites and found a nonlinear increase in the LDV skin blood flow compared to that determined by helium over the same temperature range.
(15) I was sitting in the room, reading all the negativity and death threats, and by now the helium balloons were half-full, hovering like jellyfish.
(16) After intravenous blood exposure to low-intensity radiation of Helium-Neon laser patients with haemorrhagic pancreatitis exhibited inhibition of the blood proteolytic activity; enhancement of free-radical oxidation, kallikrein-kinin system activity, blood oxygen transport, correction of endotoxic pancreatogenic syndrome.
(17) The effects of balloon rupture may be compounded by the use of helium as a driving gas to inflate the balloon.
(18) An atomic emission detector, consisting of a microwave-induced helium plasma and atomic emission spectrometer, has been used for the gas chromatographic analysis of pesticides.
(19) The modification effect of the anoxic radiosensitizer TAN on the mutagenesis in various Salmonella tester strains after gamma-ray and helium ion irradiation was studied.
(20) The clinical and laboratory findings were examined of 10 patients with seropositive rheumatoid arthritis (RA) treated with a first applied technique of intravenous irradiation of the circulating blood with helium-neon laser combined with external irradiation of the inflamed joints.