(1) Ether extracts were analyzed by gas chromatography-mass spectrometry (GC-MS) and various chlorinated and non-chlorinated compounds were detected, e.g.
(2) The physical effects of chlorination as demonstrated by experiments with batters and cakes and by physicochemical observations of flour and its fractions are also considered.
(3) The efficacy of both PCBOH I and III derivatives required the presence of a hydroxyl moiety and increased directly with the degree of chlorination.
(4) Chlorine dioxide disproportionation products, chlorite and chlorate, were not active disinfectants.
(5) The photodynamic activity of bonellin, an integumentary chlorin of Bonellia viridis, is investigated.
(6) 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.
(7) Unexpectedly long retention times were noted for the chlorinated solvents, particularly for chloroforn, which showed a specific long-term retention in the cerebellum, meninges and spinal nerves, indicating interactions with specific nervous tissue receptors.
(8) Further the results of a test under practical conditions in a swimming pool are shown and the possibility to discriminate different types of waters by their chlorine demand under constant-titration.
(9) Chlorinated ethylenes are metabolized in mammals, as a first step, to epoxides.
(10) The ASI said the UK should be prepared to adapt its standards, pointing to an assessment by the European Food Safety Authority that the chemical rinses, including chlorine dioxide, were safe to eat.
(11) Studies of structure-transacylation relationships for a series of acylhydroxamic acids of chlorinated biphenyl ethers and their related compounds by rat liver N-arylacylhydroxamic acid-dependent N-acyltransferase (AHNAT) are described.
(12) The purpose of the study was to determine whether distribution of serum lipids, blood pressure or thyroid hormones differed according to the chlorination of water supply, or to its calcium and magnesium content (hardness).
(13) Chlorine (Cl2) gas is a potentially lung-damaging irritant which is used in the chemical, plastics, and paper industries.
(14) Recoveries by each technique varied depending on the sediment sample being extracted and degree of chlorination of PCB congeners.
(15) Rats have been exposed in a closed system to the chlorinated ethylenes vinyl chloride and trichloroethylene and to carbon tetrachloride as a reference compound.
(16) Environmental isolates of CB-5 were more resistant than the laboratory strain tested, and for two strains 12 and 22% of the input virus was still infectious after 100 min in the presence of free residual chlorine.
(17) Water is no longer chlorinated, rubbish isn't collected anymore.
(18) Other chlorinated hydrocarbons as decachlorobiphenyl, pentachloronaphthalene, hexachloronaphthalene and hexachlorostyrene were identified, but not quantified.
(19) Proton induced X-ray emission (PIXE) analyses were performed on single hair fibers in triplicate from 103 individuals in order to determine sulfur, zinc, calcium, and chlorine content.
(20) The compounds are N-methoxymethylated or N-ethoxymethylated using phosphorus pentoxide and dimethoxymethane or diethoxymethane, respectively, in a chlorinated solvent.
Ethane
Definition:
(n.) A gaseous hydrocarbon, C2H6, forming a constituent of ordinary illuminating gas. It is the second member of the paraffin series, and its most important derivatives are common alcohol, aldehyde, ether, and acetic acid. Called also dimethyl.
Example Sentences:
(1) Five structurally representative nitrosamino-ethanals (R-N(NO)CH2CHO, R = 4-ClC6H4-, CH3-, nBu-, tBu-, HOCH2CH2-) have been synthesized.
(2) These parameters are compared with those of various model groups and compounds: CH2, peptide, methane, ethane, and the 1--13 N-terminal fragments of ribonuclease.
(3) A sensitive radioimmunoassay (RIA) for the specific determination of 1-(4-methanesulphonamidophenoxy)-2-[N-(4-methanesulphonamido -phenethyl)-N- methylamino]ethane (UK-68,798), a novel class III antidysrhythmic agent, in human plasma is described.
(4) To measure [Ca2+]i, fluorine NMR spectra were acquired in a separate group of hearts loaded with the Ca2+ indicator 5F-BAPTA [5,5'-difluoro derivative of 1,2-bis-(o-aminophenoxy)ethane- N,N,N',N'-tetraacetic acid].
(5) We determined ethane production rates in rats (group I) ventilated with hydrocarbon-free air (HFA) before and after exsanguination.
(6) Acid p-nitrophenyl phosphatase in rat calvaria extract behaved in the same way as the liver enzyme and was also strongly inhibited by dichloromethylene diphosphonate, but not by ethane-1-hydroxy-1, 1-diphosphonate.
(7) Experiments using purified fatty acids revealed that ethane was preferentially produced from docosahexaenoic and linolenic, and pentane from linoleic and arachidonic acids.
(8) Rabbits were pretreated with phenobarbital, 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT), 3-methylcholanthrene, beta-naphthoflavone, Aroclor 1254, ethanol, trans-stilbene oxide, pregnenolone-16 alpha-carbonitrile, or clofibric acid.
(9) Surprisingly, when the increase in [Ca2+]i during stimulation of oscillations was prevented by loading the cells with 1,2-bis(2-aminophenoxy) ethane-N,N,N',N'-tetraacetic acid, a persistent activation of Ca2+ release and Ca2+ efflux occurred.
(10) The purpose of this study was to test the effectiveness of various doses of disodium ethane-1-hydroxy-1,1-diphosphonate (EHDP) in an experimental rabbit model of athero-arteriosclerosis designed by Hass et al.
(11) Pesticidal contaminants in both placenta and milk were 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (p,p'-DDT), its metabolites 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p'-DDE) and 1,1-dichloro-2,2-bis(p-chlorophenyl)ethane (p,p'-DDD), alpha, beta, gamma - isomers of benzene hexachloride (BHC) and aldrin.
(12) In adult myocytes, when EGTA (10 or 20 mM) or bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA, 10 mM) were included in the pipette solution, contractions were rapidly abolished, while a small (4 mV) shift of f infinity to more positive potentials was seen.
(13) Ethane-1-hydroxy-1,1-diphosphonate (EHDP) was the most effective diphosphonate in reducing myocardial and vascular degeneration and calcification, whereas diphosphonates such as ethane-1-amino-1,1-diphosphonate (EADP) and hydroxymethylene diphosphonate (HMDP) had little or no effect compared to saline controls.
(14) In vivo lipid peroxidation was monitored by measuring exhaled ethane from the animals.
(15) 3.25pm GMT Ethan Dean-Richards emails re the only goal of the game: The free-kick that led to the goal was Tiote's fifth or sixth 'tactical' foul today.
(16) The composition of 99mTc-ethane-1-hydroxy-1, 1-diphosphonate complexes, prepared with the reducing agent NaBH4 and by electrolytic reduction, was analysed by reversed-phase ion-pair chromatography and soft-gel permeation chromatography.
(17) While allowing the animal to breathe a mixture of 0.1% CO in air, normal saline, which contained appropriate amounts of six inert gases such as SF6, ethane, cyclopropane, halothane, ether and acetone, was infused at a constant rate through a peripheral vein.
(18) To investigate the role of Ca2+ we have artificially increased the calcium buffering capacity of the rod by using a patch pipet to incorporate the calcium buffer 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA) into the rod cytoplasm.
(19) A single dose of ethane dimethane sulphonate (EDS) given to adult male rats has a specific destructive effects on Leydig cells, which are removed from the intertubular area by macrophages.
(20) Production of MDA was greater in mouse kidney than liver and correlated better with the exhalation of ethane.