(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.
Inert
Definition:
(a.) Destitute of the power of moving itself, or of active resistance to motion; as, matter is inert.
(a.) Indisposed to move or act; very slow to act; sluggish; dull; inactive; indolent; lifeless.
(a.) Not having or manifesting active properties; not affecting other substances when brought in contact with them; powerless for an expected or desired effect.
Example Sentences:
(1) In a control study an inert stereoisomer, d-propranolol, did not block the ocular dominance shift.
(2) Gastric reservoir reduction, wrapping the stomach with an inert fabric, is one such procedure.
(3) Utilization of inert materials like teflon, makrolon, and stainless steel warrants experimental and possibly clinical application of the developed small constrictor.
(4) The results obtained indicate that the rate of cellular uptake and accumulation of the inert aminoacid increase with time as the fraction of oxygen is reduced.
(5) To estimate model parameters (load and tube compliances, tube inertances, characteristic impedances, and peripheral resistances) we measured ascending aortic pressure and flow in a group of five open-chest, anesthetized dogs.
(6) Such an 'inert tube' model may be adequate to describe the inhalation and exhalation kinetics of inert vapours, for example non-polar solvents which have a low water solubility.
(7) A large decrease in the number of macrophages showing EAC receptors was found after treatment of the cells with BCG, but not "inert" particles such as latex and zymosan.
(8) These data, indicative of a relative inertness of physiological functions of nervous pointer dogs compared with normal pointers, are consistent with the behavioral and some of the biochemical findings previously reported.
(9) From the original concept of encapsulating hemoglobin in an inert shell, LEH has evolved into a fluid proven to carry oxygen, capable of surviving for reasonable periods in the circulation, and amenable to large-scale production.
(10) 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).
(11) Model predictions based upon these data compare favorably with published reports of isobaric inert gas supersaturation, as well as several previously unpublished observations.
(12) We concluded that the inert soluble gas method is capable of measuring in vivo the perfusion and a water compartment of the intact tracheal mucosa.
(13) A non-significant reduced risk of cervical cancer was associated with copper IUD use, indicated by an adjusted odds ratio (OR) of 0.6 (95% Cl: 0.3-1.2), but virtually no effect was found for inert IUD use (OR = 1.1, 95% Cl: 0.9-1.7).
(14) Within double-stranded DNA, it is kinetically inert in 1 M NaClO4 and becomes labile as the salt concentration is decreased.
(15) The glycohistochemical probes used consisted of conjugates of a labeled, histochemically inert carrier protein and various covalently linked, histochemically crucial sugar moieties.
(16) Tumour uptake of the inert, neutral complex 67Ga-9N3 and the tumour:blood concentration ratio (1,4,7,triazacyclononane-1,4,7, triacetic acid) were measured in mice bearing xenografts of the human melanotic melanoma HX118.
(17) Characteristics of cutaneous gas exchange in amphibians were studied by analysis of the equilibration kinetics of an inert test gas in salamanders which have neither lungs nor gills.
(18) Discoidal substrates for purified human lecithin-cholesterol acyltransferase were prepared with human apolipoprotein A-I, cholesterol, and egg phosphatidylcholine (PC) or dipalmitoyl PC, including dihexadecyl PC in various proportions as an enzymatically inert dilutor of the interfacial PC substrate.
(19) For many years, the dental profession worked mainly with rather inert restorative materials that had a limited contact with vital tissue, and the opportunity for local and systemic complications was minimal.
(20) The results support the hypothesis that mild steel welding and to a lesser extent stainless steel welding with tungsten inert gas is associated with reduced semen quality at exposure in the range of the Danish process specific threshold limit values of welding.