(v. t.) To cover with asphalt; as, to asphalt a roof; asphalted streets.
Example Sentences:
(1) Hydrogen sulfide poisoning from inhalation of roofing asphalt fumes is a rare but devastating injury.
(2) When it is not clogged with weekend traffic, Container – the English word is used in Arabic – is a desolate spot: a lonely stretch of asphalt, four dingy tollbooth-like structures painted white and green, a few bored Israeli soldiers with automatic rifles.
(3) It was established that the corneal sensitivity--especially in its central region--was distinctly lowered in persons employed in the department of asphalt oxidation and cleaning of sewages.
(4) Significantly increased risks emerged for employment in the chemical, petrochemical and plastics industries (RR = 4.0; 95% CI: 1.6-9.8), and for exposure to coal and coke (RR = 4.0; 95% CI: 1.2-13.6), asphalt and tar (RR = 5.5; 95% CI: 1.6-19.6).
(5) When tested on tracks laid by bicycling on grass or asphalt, the choice of direction was not significantly different from random, even though the dogs were always rewarded when making correct choices.
(6) From above, the New York of South America resembles an endless asphalt forest of apartment buildings and freeways, with precious little green.
(7) The region’s politicians are talking about a new airport, asphalt roads, international hotels.
(8) At the Asphalt Paving Services warehouse, down the road from St Paul’s, the lawn is immaculately, precisely cut.
(9) Moreover, A, B, C heavy oils, asphalt, soy sauce and sauce, which apparently resembled lubricants when they adhered to victims, were analysed with this method.
(10) Two cases of toxic inhalation involving exposure to several gases, including hydrogen sulfide, evolved from cooling asphalt, are presented.
(11) From there it was on to Kentucky, which had a 14% poor roads rating and many well-tended arcs of asphalt swooping through lush, wooded hill country.
(12) Boris Nemtsov’s dead body was still lying on the icy asphalt when Vladimir Putin’s spokesman announced that the president believed the murder to be a “provocation”.
(13) Comparison of these data with analyses of the three asphalts indicates that the organisms probably attack the resin components of the asphalts.
(14) Epidemiological data for man accumulated since the IARC report do not fulfil the criteria for showing a causal association between exposure to asphalt and development of cancer.
(15) Samples were obtained during removal of an old coal-tar pitch roof and application of a new asphalt roof.
(16) Automobile exhaust, asphalt, gasoline fuel, diesel fuel, tyre particles, automobile crankcase oils, and atmospheric fallout were also analysed.
(17) The stones were composed of granular calcium bilirubinate and of asphalt-like products derived from abnormal bilirubin degradation.
(18) A similar susceptibility pattern for M. ranae was obtained on the same asphalts, but apparently this organism exerted even a greater effect on asphalt 6A since the viscosity of this residue was too hard to be determined satisfactorily.
(19) Three days later, a judge said she would be charged with mass unrest and harming a representative of the state, arguing that she had hurled rocks, bottles and pieces of asphalt at riot police.
(20) Components of asphalt fumes may have been important to the observed association between risk of cancer and employment in the asphalt industry.
Naphtha
Definition:
(n.) The complex mixture of volatile, liquid, inflammable hydrocarbons, occurring naturally, and usually called crude petroleum, mineral oil, or rock oil. Specifically: That portion of the distillate obtained in the refinement of petroleum which is intermediate between the lighter gasoline and the heavier benzine, and has a specific gravity of about 0.7, -- used as a solvent for varnishes, as a carburetant, illuminant, etc.
(n.) One of several volatile inflammable liquids obtained by the distillation of certain carbonaceous materials and resembling the naphtha from petroleum; as, Boghead naphtha, from Boghead coal (obtained at Boghead, Scotland); crude naphtha, or light oil, from coal tar; wood naphtha, from wood, etc.
Example Sentences:
(1) Acute toxicity studies using rats and rabbits compared the effects of naphtha, Jet-A, JP-4, diesel and "residual" distillate fractions of both petroleum derived crude oils and hydrotreated shale oil.
(2) A program was initiated to assess the toxicological properties of high-flash aromatic naphtha since there may be human exposure through inhalation or external body contact.
(3) The acute toxicity of three materials derived from Athabasca Oil Sands--(1) bitumen plus naphtha, (2) untreated naphtha (0-250 degrees C) and (3) synthetic crude oil (0-500 degrees C)--was assessed in a battery of tests.
(4) Three toddlers mis-swallowed a mouth of cleaning naphtha accidentally.
(5) It is concluded that chronic exposure to this high aromatic naphtha is without systemic toxicity in rats under the conditions of these studies.
(6) Inhalation studies were conducted to assess the subacute and subchronic toxicity of EDS hydrotreated naphtha (HN).
(7) Bitumen plus naphtha administered at a concentration of 1.46 mg l-1 did not cause mortality in exposed rats or mice.
(8) There was little evidence that inhalation exposure to EDS hydrotreated naphtha adversely affected reproductive performance or fetal development in Sprague-Dawley rats.
(9) A unique opportunity was presented to observe the potentially toxic effects of an acute exposure to the vapors of petroleum naphtha distillate on a relatively large number of individuals.
(10) An amount of 5 g of naphtha or fuel oil is diluted to 10 ml with dichloromethane and spiked with a small quantity (ca.
(11) In addition, the nephrotoxic activity observed with the naphtha streams and distillation fraction correlated well with the proportion of branched alkanes contained in each.
(12) A synthetic crude oil, prepared by blending naphtha and light and heavy gas oils, was moderately carcinogenic; however, the activity of this sample fell within the range of values obtained in studies of crude petroleum samples.
(13) One such application is a mixture of predominantly 9-carbon aromatic molecules (C9 aromatics, primarily isomers of ethyltoluene and trimethylbenzene), which is removed and used as a solvent--high-flash aromatic naphtha.
(14) Industrial hygiene measurements showed low-level airborne exposures to organic solvents (primarily naphthas) and minimal airborne exposure to glycol ethers.
(15) One such application is a mixture of predominantly 9-carbon aromatic molecules (C9 aromatics, primarily isomers of ethyltoluene and trimethylbenzene), which is removed and used as a solvent--High Flash Aromatic Naphtha.
(16) 5-Isothiocyanato-1,3-dioxo-2-p-tolyl-2,3-dihydro-1H-benz[de]isoquinoline (= 5-isothio-cyanato-1,8-naphthalenedicarbox-4-methylphenylimide, compd.5) was synthesized from 1H,3H-naphtho(1,8-cd)pyran-1,3-dione (= 1,8-naphtha-lenedicarboxylic anhydride, compd.1) through nitration, condensation with p-toluidine, reduction with tin(II)-chloride yielding 5-amino-1,3-dioxo-2-p-tolyl-2,3-dihydro-1H-benz(de)isoquino-line (4) as intermediate, and condensation with thiophosgene.
(17) Untreated naphtha administered at a concentration of 10.6 mg l-1 was lethal to essentially all of the mice; but only two rats died.
(18) Cleaning naphtha, a product of Chinese Petroleum Corporation, is a complex hydrocarbon mixture which contains mainly aliphatic hydrocarbons.
(19) The central nervous system depression described in acute exposure cases of the intact (not distillate) petroleum naphtha fumes was not observed in any of this series.
(20) The study population included 59 women who had been exposed to petroleum naphtha and toluene and 24 age-matched control women.