What's the difference between ethylene and melene?
Ethylene
Definition:
(n.) A colorless, gaseous hydrocarbon, C2H4, forming an important ingredient of illuminating gas, and also obtained by the action of concentrated sulphuric acid in alcohol. It is an unsaturated compound and combines directly with chlorine and bromine to form oily liquids (Dutch liquid), -- hence called olefiant gas. Called also ethene, elayl, and formerly, bicarbureted hydrogen.
Example Sentences:
(1) 3,4-Dihydroxyphenyl ethylene glycol (DOPEG), a metabolite of noradrenaline (NA), was estimated in CSF of 30 patients of depression diagnosed by the criteria of American Psychiatric Association in DSM-III; and compared with levels in 10 non-depressed individuals who served as controls.
(2) Depletion of extracellular Ca2+ by EGTA [ethylene glycol-bis(beta-aminoethyl ether)-N,N,N'N'-tetraacetic acid] attenuated both [Ca2+]i increase and superoxide production induced by particles.
(3) Orotic acid inhibited, dose-dependently DNA synthesis in hepatocytes induced by epidermal growth factor, transforming growth factor alpha, hepatocyte growth factor, acidic fibroblast growth factor, or plasma from rats exposed to various liver cell-proliferative stimuli, such as two-thirds partial hepatectomy, lead nitrate, cyproterone acetate, ethylene dibromide, or a diet deficient in choline.
(4) 1-[(4-amino-2-methyl-5-pyrimidinyl)methyl]-3-(2-chloroethyl)-3- nitrosourea hydrochloride (ACNU) causes chloroethylation of DNA strand followed by cross linking through an ethylene bridge.
(5) Chlorinated ethylenes are metabolized in mammals, as a first step, to epoxides.
(6) Therefore, an experimental study was undertaken to assess the suitability of an expanded PTFE (Polytetrafluoro-ethylene) as a microvascular graft.
(7) Solid-phase adsorbents were compared in their trapping efficiencies for dichloromethane (DCM), ethylene dibromide (EDB), 4-nitroblphenyl (4-NB), 2-nitrofluorene (2-NF), and fluoranthene (FI).
(8) Therapeutic application of drugs containing propylene glycol 1.2 as a solvent may distort the results of forensic chemical detection of ethylene glycol from its oxidation products.
(9) It was found that the stress at a given strain was increased by treatment with ethylene oxide, buffered formalin, and tissue culture solution and decreased by treatment with antibiotics.
(10) Practical examples illustrate the possibility of ethylene glycol determination by gas chromatography in the presence of propylene glycol.
(11) Enzymes that pelleted more in myogen preparations than as individual purified enzymes in the presence of poly(ethylene glycol) and the absence of F-actin were tested for specific enzyme-enzyme associations, several of which were observed.
(12) Subacute (10-day) and subchronic (90-day) toxicity studies of ethylene glycol (EG) were conducted in male and female Sprague-Dawley rats to provide the U.S. Environmental Protection Agency's (EPA) Office of Drinking Water with toxicity data for final preparation of a Health Advisory for the chemical.
(13) Two-phase systems consisting of water, dextran and poly(ethylene glycol) have been used for partition of membranes obtained from Torpedo marmorata electric organ.
(14) Rats have been exposed in a closed system to the chlorinated ethylenes vinyl chloride and trichloroethylene and to carbon tetrachloride as a reference compound.
(15) For two chemicals, dichlorobenzidine and ethylene thiourea, there is not enough epidemiological information to make a useful comparison with rodent bioassay data.
(16) We examined the effect of ethylene glycol (EG) concentration, in water, on O2 sensitivity, stirring effect, in vitro drift, in vitro response time, behaviour on the skin of newborn infants and in vivo response time.
(17) As a prerequisite for preparing bispecific antibody conjugates containing anti-tumor and anti-metal chelate binding sites that can be used for pretargeted immunoscintigraphy, monoclonal antibodies (Mabs) have been raised against an octahedral metal chelate synthetized from gallium (Ga) and the hexadentate ligand N,N'bis[2-hydroxy 5-(ethylene beta carboxy) benzyl] ethylenediamine N,N' diacetic acid (Ga-HBED-CC).
(18) In heavily mineralized bone matrix, the periodic pattern of collagen fibrils was retained, and the electron density of mineralized matrix in freeze-substituted and unstained sections which had been floated on ethylene glycol was greater than that encountered in sections processed in aqueous reagents.
(19) Paraquat (1,1'-dimethyl-4,4'-bipyridylium) and diquat (1,1'-ethylene-2,2'-bipyridylium) are the two most widely used bipyridylium herbicides today.
(20) Moreover, in patients dialysed using ethylene oxide sterilized equipment, anaphylactoidal reactions were observed.
Melene
Definition:
(n.) An unsaturated hydrocarbon, C30H60, of the ethylene series, obtained from beeswax as a white, scaly, crystalline wax; -- called also melissene, and melissylene.
Example Sentences:
(1) The raccoon was weak, ataxic and had melenic soft feces.