How To Use Hydrocarbon In A Sentence
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Activated charcoal does not effectively adsorb hydrocarbons, and, in the absence of coingestants, has no role in therapy.
Hydrocarbon Ingestion
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The family's common names follow the standard alkane hydrocarbon sequence: methyl paraben, ethyl paraben, propyl paraben, butyl paraben, etc.
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The volume expansion provides an excellent mechanism to expel and propel fluid products – including hydrocarbons – from the area of serpentinization to seep sites at the crust hydrosphere/atmosphere interface.
At it Again
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If hydrocarbons are discovered, a separate production license or production-sharing agreement is usually drawn up before development can proceed.
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The pieces would then be fed into a "gasifier," where the materials would be turned into a gas containing hydrogen, carbon monoxide, carbon dioxide, methane and other hydrocarbons.
ENS
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The first step of this method is to find the critical point by drawing the scatter plot of hydrocarbon content versus the ratio of light hydrocarbon content to heavy hydrocarbon content.
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The group is requesting that the FDA enact a rule that sets a limit on the amount of polycyclic aromatic hydrocarbons deemed safe for pregnant women and young children.
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The propellant deflagration produced only a fireball, and a small one at that, by comparison to a LOX-hydrocarbon mix.
Black Zones - NASA Watch
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The corniferous limestone is never more than fifty or sixty feet thick, and does not contain even one per cent. of hydrocarbons; and in southern
Scientific American Supplement, No. 362, December 9, 1882
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During rush hour in the mornings and afternoons, Caribbean cities are dominated by metal, plastic and rubber objects, puffing hydrocarbons and other gases into the atmosphere.
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Aliphatics are our company's range of hydrocarbon fluids including specialty brands.
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These unsaturated hydrocarbons are readily oxidised and polymerised, which can reduce the oil's shelf life.
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Hydrocarbons within the formation may be pyrolyzed.
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TCE is the least hepatotoxic of all the chlorinated hydrocarbons, but acute exposure may cause a transient increase in liver enzymes. 4
Poison prevention for Delaware, Lehigh Valley, S.E. Pennsylvania
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However, because of its lower combustibility it contains 50% more carcinogenic polycyclic aromatic hydrocarbons including naphthalene, benzanthracene, and benzopyrene, than tobacco smoke.
Impact Lab
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A monitoring programme is designed to assess the rate of leaching in inorganic ions and hydrocarbons from the deposit.
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Biodiesel reduces emissions of unburned hydrocarbons, carbon monoxide, sulfates, polycyclic aromatic hydrocarbons, nitrated polycyclic aromatic hydrocarbons and particulates.
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In addition to carbonates of sodium, especially the hydrocarbonate known as glycolate, the bile apparently contains ammonium sulphate combined with hydrocarbon (taurin); but this results from the transposition of sodium sulphate and gelatine.
Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration
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The explosion at the Texas City plant occurred after a piece of equipment called a blowdown drum overfilled with highly flammable liquid hydrocarbons.
Newsvine - Get Smarter Here
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Existing catalytic converters can produce extremely low hydrocarbon and carbon monoxide outputs only in optimal conditions.
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Burning buildings can produce carbon monoxide, nitrous oxides, polycyclic aromatic hydrocarbons and volatile organic and sulphurated compounds.
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The space agency says the soil contains polychlorinated biphenyls, or PCBs, and polynuclear aromatic hydrocarbons, also known as PAHs.
WMDT Top News Stories
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Pollutants such as nitrogen oxide, carbon monoxide and hydrocarbons have also been linked to hay fever, chest infection and childhood cancer.
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Bio-diesel fuelled engines, like their regular fuel counterparts, still emit carbon monoxide, unburned hydrocarbons, carbon dioxide and particulate matter.
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In the liquid-unordered high temperature phase (fluid phase), hydrocarbon chain states are unordered and degenerate, and the crystalline order is lost.
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Rubber gum is made up mostly of a hydrocarbon polymer called polyisoprene, the chains of which are composed only of interlinked carbon atoms with some hydrogen atoms attached.
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The layers of plants and animals slowly broke down into simple substances called hydrocarbons, compounds of hydrogen and carbon.
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Like pentane, paraffins are alkanes - hydrocarbon molecules that have as many hydrogen atoms as the molecule's carbon backbone can accommodate.
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Along with managerial skills, his geoscience specialties include well survey ( "logs") analysis and interpretation, evaluation of depositional and diagenetic systems, seismic - stratigraphic application to the exploration and exploitation of hydrocarbon reservoirs, and definitive risk/reward economic evaluation of oil and gas projects.
The Earth Times Online Newspaper
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Saturated hydrocarbons can burn to aldehydes, alcohols to organic acids, and aromatics to unsaturated compounds which are pungent and irritating.
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The family's common names follow the standard alkane hydrocarbon sequence: methyl paraben, ethyl paraben, propyl paraben, butyl paraben, etc.
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Gelatine contains six atoms of hydrocarbon joined with two of ammonium carbonate, a group which is separable by chemical action into five of carburetted hydrogen with ammonium carbonate (leucin or gelatine milk), C_ {5} H_ {10}, CO_ {2}, NH_ {3}, and into one of carburetted hydrogen with ammonium carbonate (glycin or gelatine sugar), CH_ {2}, CO_ {2}, NH_ {3}.
Valere Aude Dare to Be Healthy, Or, The Light of Physical Regeneration
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So that would have told you at least one of or both contained entrained hydrocarbons?
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Based on meteorite studies, astronomers recognize that NEAs have diverse compositions, including silicate, carbonaceous and hydrocarbon-bearing, metallic, and ice-bearing materials.
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For example, aquatic organisms that have assimilated UV-B absorbing polyaromatic hydrocarbons have shown phototoxic effects when exposed to UV-B radiation.
Climate change, interactive changes and stresses in the Arctic
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Other interesting results obtained by Natta in the field of macromolecular chemistry concern the synthesis of crystalline alternating copolymers of different couples of monomers and the synthesis of various sterically ordered polymers of non-hydrocarbon monomers.
Giulio Natta - Biography
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The residual gases including nitrogen, higher hydrocarbons carbon dioxide, etc. constitute about 2 percent.
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Like benzene, the homologous aromatic hydrocarbons, toluene, xylenes, etc. fix directly six hydrogen atoms to produce the corresponding cyclic compounds; phenol is transformed into cyclohexanol, aniline into cyclohexylamine.
Paul Sabatier - Nobel Lecture
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Aliphatic and aromatic hydrocarbons, ketones, ethers, glycols and higher alcohols are not corrosive to magnesium and its alloys.
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Isomerization and alkylation of saturated hydrocarbons to provide high octane gasoline are of particularly great importance in the petroleum industry.
Hydrocarbons for the 21st Century - The Work of the Loker Hydrocarbon Research Institute
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Tahe oilfield in Tarim basin is characterized by multi-stage hydrocarbon generation, multi-channel migration and multi-stage petroleum accumulation.
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Regardless of the amount involved, gastric emptying is not indicated for accidental ingestion of a hydrocarbon lacking systemic toxicity.
Hydrocarbon Ingestion
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In fact, petroleum distillate refers to a type of hydrocarbon which results from the processing of crude oil, and may be aliphatic or aromatic.
Hydrocarbon Ingestion
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It had been demonstrated by our experiments that higher conversion of hydrocarbons and yield of light alkenes could be obtained in the GOC of various hydrocarbons than those in the pyrolysis.
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Residents of Woburn may also have been exposed to polynuclear aromatic hydrocarbons as well as to arsenic and chromium compounds in their drinking water.
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The platinum catalyses the reaction of carbon monoxide and hydrocarbons with air to give carbon dioxide and water vapour.
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A simple rule is that all aromatic and conjugated hydrocarbons consisting of even membered rings and any kind of chain are alternant hydrocarbons.
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Oil, a liquid hydrocarbon, is a more neutral fuel.
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Professor Kubozono said picene is the first example of a hydrocarbon superconductor, although scientists have been able to create superconductors of the carbon compound fullerene (C60) doped with potassium.
PhysOrg.com - latest science and technology news stories
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The volume of a hydrocarbon chain, v, does not change in the course of membrane deformations, because the hydrocarbon moiety of a lipid molecule is practically incompressible.
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Superacid catalysts developed at the Institute permit oxidative condensation of methane to higher hydrocarbons, as well as the selective electrophilic conversion of methane to its mono-substituted derivatives such as methyl halides and methyl alcohol.
Hydrocarbons for the 21st Century - The Work of the Loker Hydrocarbon Research Institute
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They are immiscible with many organic solvents, particularly linear hydrocarbons and alicyclics like cyclopentane.
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The latest phase of the EPA regulations is expected to reduce exhaust hydrocarbons by about 35 percent—and evaporative emissions by 45 percent.
Lower emissions standards for riding mowers kick in this season
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In their research, the investigators focused on a class of cancer-causing culprits found in cigarette smoke called polycyclic aromatic hydrocarbons, or PAHs.
Smoking damages DNA within minutes, research shows
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These are complex mixtures of paraffinic, aromatics and naphthenic hydrocarbon type molecules, ranging in carbon number from 14 to 40 +.
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Hydrocarbons Hundreds of different types of hydrocarbons are emitted from vehicle exhausts.
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One way to do just this would be to detect the on-going production of hydrocarbons such as propane which cannot be produced by volcanic activity.
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In both cities and forests, alkyl nitrates are made when nitrogen oxides, which are produced by automobile tailpipes and smokestacks, react with hydrocarbon molecules.
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The quantities of two cuticular hydrocarbons, 7 - T and 7,11 HD, were calculated from the resulting chromatographs as the area under each peak.
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The observed invariance of melittin-induced leakage with differences in bilayer hydrocarbon thickness is also evidence in favor of the toroidal pore over the barrel stave pore.
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Base oils contain hydrocarbons that tend to crystallize into waxy materials at low temperatures.
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The bubbler is a tank containing a mixture of water and hydrocarbons (gasoline, diesel, kerosene, crude oils and others derived from hydrocarbons ...).
Original Signal - Transmitting Digg
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In a series of masterly experiments von Baeyer demonstrated several years ago the chemical nature of the phthaleins and showed that, just like the already known rosaniline dyes, they may be classified as derivatives of the hydrocarbon triphenylmethane.
Nobel Prize in Chemistry 1905 - Presentation Speech
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The well will now be geologically sidetracked, as intended, to test the reservoir up-flank between this vertical bore and existing crestal wells to further investigate the quality of the reservoir and provide essential compositional information of the hydrocarbons at intermediate depths.
New Statesman
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(Table 2) Halogenated hydrocarbons, such as the solvent trichloroethane and methylene chloride, can produce liver and renal toxicity following chronic exposure, as well as central nervous system (CNS) effects with acute exposure.
Hydrocarbon Ingestion
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The term alkyl refers to the hydrocarbon functional group derived formally by the loss of a hydrogen atom from the alkane.
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In addition to significant environmental benefits like a 60- to 70-percent reduction in smog-producing hydrocarbons when compared to gasoline, a 96-percent reduction in toxins and carcinogens like benzene and toluene, and a 20-percent reduction in NOx, propane autogas offers performance benefits like lower cost of ownership and longer service life when compared to traditional fuels.
Ferrellgas Launches Autogas Website for Business Fleets Looking to Embrace Clean Fuel - Yahoo! Finance
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Hydrocarbons also contribute both to acid rain and to ozone formation.
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One of the important reactions in oil refinement is hydrocarbon cracking.
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Those depositional layers have been washing into the Gulf of Mexico for eons, trapping life that eventually was transformed into hydrocarbons far below the surface.
McMoRan Exploration Drills Deep Into The Shallow Water
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During deep burial the peat undergoes coalification which squeezes out up to 98\% of the water and some of the volatile hydrocarbons.
WHAT REALLY HAPPENED
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Whereas ester waxes are produced directly by living organisms, paraffin waxes consist of mixtures of high molecular weight hydrocarbons separated during the fractionation of petroleum.
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Included among these compounds are some of the best known of all chemical families, including the hydrocarbons, alcohols, ethers, aldehydes and ketones, and organic acids.
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Five classes of pesticides were examined in the new study: phosphates, pyrethroids, halogenated hydrocarbons, carbamates, and endocrine disruptors.
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They flow under differential loading and when subjected to such loading or tectonic stress can produce diapiric structures, many of which have associated traps for hydrocarbons.
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Closed shellfish beds have been reopened and eelgrass have been potential long-term sources of contaminants, such as acids, solvents, polycyclic aromatic hydrocarbons and oxygen-demanding biological wastes.
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This method of production is still used although oxidation of methane, pyrolysis of alkanes, and cracking of hydrocarbons are more commonly encountered.
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And second, in a section called The Fate of all Hydorcarbons, a study done in late September concluded that "most of the initial biodegradation in the plumes involved gaseous hydrocarbons (propane and ethane), rather than oil.
Philip Radford: White House hid truth on spill: The truth and the oil is still out there.
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Transformation of tectonic framework plays a decisive role in all factors constraining on hydrocarbon reservoir formation.
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Called the " silent killer " because it is odorless, it is produced when hydrocarbon combustion is incomplete.
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But really, the climate issue is just a way of trying to grapple with this fundamental uneven marketplace; the incorporation of the "cost of carbon" (because we have used the "fear" lever in the spectrum of fear and greed that the marketplace right now recognizes as the only two drivers for economic activity) is a way of monetizing fossilization in that extracted petroleum, coal, hydrocarbon feedstock.
Alison Wise: The Clean Economist: Clean "Corruption"
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Among the 4800 constituents of tobacco smoke, researchers have identified more than 100 alkanes, 150 alkenes and 55 alicyclic hydrocarbons.
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Whereas the anticholinesterase compounds, which have high acute toxicity (and hence are highly hazardous to the applicator), are readily and rapidly degraded in nature, the halogenated hydrocarbons are not.
Rachel Carson’s Victims, R.I.P.
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The squad checks the autorickshaw for carbon monoxide and hydrocarbon emissions.
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That afternoon, during the restart of a gasoline octane boosting sub-unit, highly explosive hydrocarbons shot like a geyser out of an environmental safety system called a blowdown stack.
The Daily News - News
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Symptoms of aliphatic hydrocarbon ingestion, in the absence of toxic substituents, are confined to the gastrointestinal tract and the respiratory tract.
Hydrocarbon Ingestion
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He thinks we should probably leave one third of the world's reserves of hydrocarbons right there where they are, in the ground.
Times, Sunday Times
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The war-torn country is rich in hydrocarbons but current production is some 500,000 barrels per day.
Times, Sunday Times
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The respirable portion of particulates can include acid condensates, sulfates, nitrates, and organic compounds (e.g., polycyclic aromatic hydrocarbons).
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The trick is to control the density of these groups by adding a hydrocarbon diluent to the monomer mix.
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Hydrocarbons may be trapped in anticlines draped over deeply - buried horsts in the pre - deltaic basement.
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The samples showed high concentrations of methane, ethane, butane, and propane, gases in a class of hydrocarbons called alkanes.
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It is the chemical that gets into the body via smoke but then is converted by enzymes called aryl hydrocarbon hydroxylases into a more potent chemical that is the epoxide of BP.
The New Super-Nutrition
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Mining coal, gasifying it, then using the Fischer-Tropsch process to produce the hydrocarbon molecules needed for petrol and Sasol's other products inevitably costs more than pumping crude oil.
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The solution type also had significant effect on the selectivity of 1-bromo-hydrocarbon, the no polar solution was favorable for the selectivity.
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The study also suggests that the substances in black tattoo inks -- materials known as polycyclic aromatic hydrocarbons PAHs -- migrate into subjects' lymph nodes, which aid an individual's body in filtering out disease-causing organisms.
Glenn D. Braunstein, M.D.: Tattoos: Inks Raise New Health Concerns About Age-Old Designs
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Another technically important chain reaction is the combustion of carbon monoxide, not to mention the combustion of hydrocarbons.
Nobel Prize in Chemistry 1956 - Presentation Speech
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Potentially harmful polycyclic aromatic hydrocarbons or PAHs for short, heterocyclic amines, and higher and mutagenic aldehydes, along with fine and ultrafine particles, have all been found in cooking fumes, using vegetable oils, such as safflower, soya bean, and rapeseed oils, as well as lard.
PhysOrg.com - latest science and technology news stories
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Some other chlorinated hydrocarbons were banned in 1975.
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The oil having been allowed to settle all night, the litharge solution is drawn off, and the oil run into a shallow tank or "bleacher," where it is exposed to the light to improve its color, and is, if necessary, steamed to drive off the lighter hydrocarbons and raise the flashing point to the legal minimum of 95° F.
Scientific American Supplement, No. 611, September 17, 1887
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It is a combination of palmitic acid and a peculiar hydrocarbon, called (after the whale) "cetyl," and easily forms pure crystals.
More Science From an Easy Chair
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It consists mainly of methane, the simplest hydrocarbon, as well as small amounts of heavier, more complex hydrocarbons such as ethane, butane and propane.
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The platinum catalyses the reaction of carbon monoxide and hydrocarbons with air to give carbon dioxide and water vapour.
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The middle-deep beds are very important new hydrocarbon exploration area in the Yinggehai Basin where there are some mud diapir belts with abnormal high temperature and pressure.
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If possible, avoid using roofs of buildings that rely on wood heat, as the smoke particles and soot deposited on the roof may contain polynuclear aromatic hydrocarbons and other hazardous materials.
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The protonation of saturated hydrocarbons in superacidic media has, through Olah's work, already had practical consequences.
Press Release: The 1994 Nobel Prize in Chemistry
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At normal pressures carbon takes the form of graphite, in which each atom is bonded trigonally to three others in a plane composed of fused hexagonal rings, just like those in aromatic hydrocarbons.
BSNYC Product Review: Bicycle Book Shootout!
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The mineral oils are a mix of several hydrocarbons with different length of carbon chain.
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Now, Ryoji Mitsuhashi and colleagues at Okayama University in Japan have found that crystals made from the hydrocarbon picene and potassium atoms are superconductors at temperatures up to 18K.
Physicsworld.com: all content
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In addition, aspiration may occur as the result of re-exposure of the larynx to hydrocarbon from the tip of the tube during removal.
Hydrocarbon Ingestion
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The majority of hydrocarbons found naturally occur in crude oil, where decomposed organic matter provides an abundance of carbon and hydrogen which, when bonded, can catenate to form seemingly limitless chains.
PhysOrg.com - latest science and technology news stories
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Chicxulub drill cores reveal that the target rocks contain hydrocarbons, the vaporization of which could produce soot.
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Natural gas is also virtually free of the lead, sulphur, particulates and aromatic hydrocarbons that cause pollution at street level.
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Tuck in behind an abundant gas giant and you have protection from solar flares and an inexhaustible supply of hydrocarbons and volatiles.
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This is one of the most common ways of synthesizing alkenes, double-bonded hydrocarbons.
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Exhaust gases include harmful volatile organic compounds or hydrocarbons, chemicals such as nitrogen oxide and carbon monoxide.
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Among the 4800 constituents of tobacco smoke, researchers have identified more than 100 alkanes, 150 alkenes and 55 alicyclic hydrocarbons.
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Saturated hydrocarbons can burn to aldehydes, alcohols to organic acids, and aromatics to unsaturated compounds which are pungent and irritating.
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The pinkroot also holds a bitter and pungent substance that is soluble in water as well as alcohol, but not soluble in ether (an organic amalgam related to the hydrocarbon group).
Find Me A Cure
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The phase behavior experiment shows that the hydrocarbon gas injection makes the results of visbreaking and swell of reservoir fluid obvious in Gao 13 Block.
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GC/MS was performed to qualitative analysis of hydrocarbons and oxygenic components in FCC gasoline.
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Or we could use all those phenyl rings in the lignin in lignocellulosic biomass to make hydrocarbons: or dehydrate sugars to furfurals using ionic liquids.
Rabett Run
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These reactions, some of which are run on a large scale in the petroleum industry, are initiated by the protonation of saturated hydrocarbons.
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Here, the hydrocarbon chains are, on average, directed to a single one-dimensional line.
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When combusting hydrocarbons in an engine, the energy emitted is from the breaking of the carbon and hydrogen bonds ignited in the presence of oxygen from the air.
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A dark patch on the surface of Titan, moon of Saturn, might be a lake filled with liquid hydrocarbons, astronomers have said.
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Thermatoga microorganisms are known to play a role in the anaerobic oxidation of hydrocarbons to alcohols, organic acids and carbon dioxide.
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They came up with their estimate by computationally assembling graphs which corresponded to all the saturated hydrocarbon backbones.
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The simplest sources are hydrogen-rich compounds like hydrogen gas, hydrogen sulfide gas and hydrocarbons.
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Monosubstituted methanes can be further condensed to ethylene, propylene and derived hydrocarbons over zeolites or bifunctional acidic-basic catalysts, giving access to a whole range of hydrocarbons essential to our everyday life.
Hydrocarbons for the 21st Century - The Work of the Loker Hydrocarbon Research Institute
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Cleanliness has been improved as well, with unburnt hydrocarbons being recycled back into the chamber, for another torching.
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This inherent ability of hydrocarbons to bond to themselves is referred to as catenation, the physic-chemical scenario behind this transport behavior.
PhysOrg.com - latest science and technology news stories
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Epoxidation, the conversion of an olefin (an unsaturated alkene hydrocarbon) to a cyclic ether through reaction with hydrogen peroxide, a peracid, or oxygen, is an important chemical technique.
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But existing controls on certain persistent toxins such as DDT and chlorinated hydrocarbons had begun to prove effective in European and American waters.
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Hydrocarbons such as benzene, a carcinogen, is a problem with gasoline.
Gasoline price in Mexico
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Explorationists in general and geophysicists in particular search for hydrocarbon traps.
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This coevolutionary explanation of the unsustainability of modern societies then is simply that development based on fossil hydrocarbons allowed individuals to control their immediate environments for the short run while shifting environmental impacts, in ways that have proven difficult to comprehend, to broader and broader publics (ultimately to the entire global polity) and on to future generations.
An Introduction to Ecological Economics~ Chapter 2
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These hydrocarbons are known to chemists as "paraffins,
Acetylene, the Principles of Its Generation and Use
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Hydrocarbons are divided into groups of which those of especial interest to geologists are the paraffin, cycloparaffin and aromatic groups.
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They are immiscible with many organic solvents, particularly linear hydrocarbons and alicyclics like cyclopentane, so can be combined either with water or with an organic solvent to form a two-phase system.
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Some of the volatile substances in these products include toluene, chloroform, butane, propane, acetone, and many halogenated hydrocarbons.
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The experiments show that a non-biological source of hydrocarbons may lie in Earth's mantle and was created from reactions between water and rock - not just from the decomposition of living organisms.
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hydrocarbons are organic compounds
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Making complex hydrocarbons obsolete in utility is something only a lawyer could come up with; sorry.
Is That Legal?: Coddling the Coddlers
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The promised hydrocarbon bonanza is already manifesting itself in territorial claims - such as between Canada and Greenland over tiny Hans Island or Russia's act of planting a titanium flag underwater on the Lomonosov ridge to stake a claim on a huge exclusive economic zone.
Bianca Jagger: Now Is the Time to Move Beyond Petroleum
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Amorphous alumina-silica composites are used to crack or split hydrocarbon chains in petroleum refining.
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The promised hydrocarbon bonanza is already manifesting itself in territorial claims - such as between Canada and Greenland over tiny Hans Island or Russia's act of planting a titanium flag underwater on the Lomonosov ridge to stake a claim on a huge exclusive economic zone.
Bianca Jagger: Now Is the Time to Move Beyond Petroleum
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Yet the real energy gain in fuels does not come from burning the carbon component of hydrocarbons, but the hydrogen portion.
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When the oil shale gets to a suitable temperature, the hydrocarbon material - called kerogen - becomes a vapor.
Glenwood Springs Post Independent - Top Stories
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The majority of substances identified were aliphatic or aromatic hydrocarbons.
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Oil sands operations, however, produced the overwhelming bulk of several dangerous substances: for example, bitumen mines generated nearly all of the Canadian total of acenaphthene, one of a bevy of polycyclic aromatic hydrocarbons released around Fort McMurray.
The Globe and Mail - Home RSS feed
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And they can use that task-specific odor in cuticular hydrocarbons -- they can use that in their brief antennal contacts to somehow keep track of the rate at which they're meeting ants of certain tasks.
Deborah Gordon digs ants
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Furthermore when fragments of the epidermal carcinomas, arising from papillomas induced in cottontail rabbits by oncogenic hydrocarbons, were exposed to the
Peyton Rous - Nobel Lecture
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In light of the research results it is shown that the formation of various hydrocarbon component hydrates is correlated to molal weight and to normal boiling point.
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Carbon dioxide, a principal ingredient of the exhaust gases made during combustion of hydrocarbons, has a molecular weight of 44.
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The chemicals included aliphatic hydrocarbons, glycol ethers, isopropanol, limonene, naphtha, oils, and varnishes.
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According to Lewes, acetylene commences to "polymerise" at a temperature of about 600° C., when it is converted into other hydrocarbons having the same percentage composition, but containing more atoms of carbon and hydrogen in their molecules.
Acetylene, the Principles of Its Generation and Use
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Thus, while ordinary hydrocarbon chains are zigzag - shaped, isotactic chains form helices with the side groups pointing outwards.
Nobel Prize in Chemistry 1963 - Presentation Speech
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The Lake was originally an oligotrophic water body with hydrocarbonate-calcium ionic content, very low turbidity, and low concentrations of microelements.
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He says the radar echoes indicate that impact craters filled with liquid hydrocarbons may cover as much as 75 percent of Titan's surface.
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So with the long list of hydrocarbons -- gaseous, liquid, and solid -- called paraffins, that are obtained from petroleum and that are all composed of hydrogen and carbon, but with a different number of atoms of each, like a different number of a's or b's or c's in a word.
The Breath of Life
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Methane, a hydrocarbon, is more efficient IR spectrum absorber than CO2.
The Volokh Conspiracy » The Parked Mustang Test of Environmental Progress
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Carcinogens in cigar smoke include the following: benzene aromatic amines (especially carcinogens such as 2-naphthylamine and 4-minobiphenyl) vinyl chloride ethylene oxide arsenic chromium cadmium nitrosamines polynuclear aromatic hydrocarbons There are some differences between cigar and cigarette smoke, though.
WN.com - Articles related to Ban smoking in all vehicles, doctors demand
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Process for selective hydrogenation of highly unsaturated compounds and isomerization of olefins in hydrocarbon streams
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He believes the hydrocarbons exert a direct influence only; being more oxidizable than fats, they guard the latter from oxidation.
Scientific American Supplement, No. 821, September 26, 1891
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Depiction of sunlight-driven photocatalytic carbon dioxide conversion to hydrocarbon fuels using nitrogen-doped titania nanotube arrays surface-loaded with Cu and / or Pt cocatalyst nanoparticles.
Green Car Congress
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Without a strict control of hydrocarbons and water, mirror degradation as a result of carbonization, oxidation, or etching will occur.
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Fractures and faults act as the favorable pathways of hydrocarbon migration.
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Residents are exposed to photochemical smog, airborne particles, and alkane hydrocarbons (e.g., propane, isobutane, n-butane).
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Furthermore, the composition of Titan's atmosphere is complex: it is made up primarily of nitrogen, but a variety of hydrocarbons, such as methane, ethane, ethyne, and propane, are also present.
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Removing huge disparities in wealth means a massive acceleration in the burning of hydrocarbons.
Times, Sunday Times
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Coal dust contains silica, trace metals, and polynuclear aromatic hydrocarbons (PAH), many of which are known human carcinogens.
Jeff Biggers: Updated:VIDEO: Nonviolent Goldman Prize Winner Attacked by Massey Supporter: 94-Year-Old Hechler, Hannah, Hansen Arrested at Coal River
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Among the experts were a state criminologist, a specialist in hydrocarbon and chemical fires, an electrical engineer, an arson authority and another expert on fire burn patterns.
Wolf House Burning: Page IV
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It seems probable that the initial event in the toxicity of PCBs is mediated through their binding to the aryl hydrocarbon receptor.
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Superacid catalysts developed at the Institute permit oxidative condensation of methane to higher hydrocarbons, as well as the selective electrophilic conversion of methane to its mono-substituted derivatives such as methyl halides and methyl alcohol.
Hydrocarbons for the 21st Century - The Work of the Loker Hydrocarbon Research Institute
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Benzene is a colorless and highly flammable liquid hydrocarbon derived from petroleum.
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Sand, the proppant, primarily quartz and feldspar aka ground up rock, is the material that gets lodged in cracks that open up, and keep those cracks open when force and pressure are removed, allowing less resistance between underground hydrocarbons, to allow them to become newly liberated hydrocarbons, which we use to power a significant portion of our country.
Energy 101: Hydraulic Fracturing - Vladimir’s blog - RedState
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For many syntheses, this means using such compounds as hydrocarbons and alcohols, plus inorganic acids, metals, halogens, or other compounds.
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Stegeman has been chronicling resistance to toxic PCBs and polycyclic aromatic hydrocarbons in another coastal species, a killifish.
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Extracts of diesel exhaust particles modulate the aryl hydrocarbon receptor and estrogen-dependent gene expression in cells in vitro and are endocrine disrupters.
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Aspiration of aliphatic hydrocarbons may result in lethargy, tremors, and, rarely, convulsions or coma.
Hydrocarbon Ingestion
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For example, alkyl groups can be introduced into aliphatic hydrocarbons or aromatic hydrocarbons by alkylation reactions.
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He has also been concerned with work on the constitution of unsaturated compounds by quantitative ozonization, condensation of aldehydes and ketones, ketone splitting of tertiary alcohols, the cracking of hydrocarbons in presence of aluminium chloride and catalytic hydrogenation and dehydrogenation processes under reduced pressures.
Victor Grignard - Biography
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These are complex mixtures of paraffinic, aromatics and naphthenic hydrocarbon type molecules, ranging in carbon number from 14 to 40 +.
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Church air was found to be considerably higher in carcinogenic polycyclic hydrocarbons than air beside roads travelled by 45,000 vehicles daily.
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Today, most forms of transportation depend on the combustion of a hydrocarbon fuel such as gasoline, kerosene, or diesel oil to produce the energy that drives pistons and moves the vehicles on which modern society depends.
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The layer of polar lipid headgroups separates the apolar hydrocarbon core of the membrane from the surrounding aqueous phase and stabilizes its lamellar structure.
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A type of hydrocarbon molecule that is saturated with single bonds and is formed by a straight chain similar to a paraffin but with a side chain.
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The transfer zone may form structures or traps that are prone to hydrocarbon migration and accumulation.
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It includes the glycerol and carbonyl groups and the hydrocarbon chains of the lipid.
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The technology is set up to register carbon monoxide and hydrocarbon emissions, big contributors to poor air quality.
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Polycyclic aromatic hydrocarbons are a class of organic compounds having two or more fused aromatic ring structures each based on the structure of benzene.
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Biodiesel reduces emissions such as carbon monoxide, unburned hydrocarbons and particulate matter.
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The sparse evidence includes the Buck Mesa 1 hydrocarbon well on the flank of the Dome and seismic reflection and refraction data, which have been interpreted to show that diapiric evaporites are absent beneath the structure.
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When carried out in hydrocarbon solvent, this reaction produces a synthetic rubber similar to natural rubber.
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Death from CNS depression following aliphatic hydrocarbon ingestion has not been reported. 3
Hydrocarbon Ingestion
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Unlike hydrocarbon based aromatics, which react most readily with electrophiles, perfluoro-aromatics and heterocyclic ring systems react better with nucleophiles.
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Biodiesel reduces emissions of unburned hydrocarbons, carbon monoxide, sulfates, polycyclic aromatic hydrocarbons, nitrated polycyclic aromatic hydrocarbons and particulates.
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Included among these compounds are some of the best known of all chemical families, including the hydrocarbons, alcohols, ethers, aldehydes and ketones, and organic acids.
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The saturated moss product is then removed and buried, where it breaks down in an environmentally friendly manner; the peat moss itself contains humic acid, which is a powerful catalyst in breaking down hydrocarbon molecules.
The Great Penguin Rescue
