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Topic: Hydrocarbon


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In the News (Mon 17 Jun 19)

  
  Hydrocarbon - Wikipedia, the free encyclopedia
Hydrocarbons are mined from tar sands, oil shale and potentially extracted from sedimentary methane hydrates.
Hydrocarbons are of prime economic importance because they encompass the constituents of the major fossil fuels (coal, petroleum, natural gas, etc.) and plastics, paraffin, waxes, solvents and oils.
Hydrocarbons (usually coal) are burnt and the energy released in this way is used to turn water in to steam, which is used to turn a turbine that generates energy.
en.wikipedia.org /wiki/Hydrocarbon   (826 words)

  
 Encyclopedia :: encyclopedia : Hydrocarbon   (Site not responding. Last check: 2007-10-22)
For example, methane (swamp/marsh gas) is a hydrocarbon with one carbon atom and four hydrogen atoms: CH Ethane is a hydrocarbon (more specifically, an alkane) consisting of two carbon atoms held together with a single bond, each with three hydrogen atoms bonded: C
Oil reserves in sedimentary rocks are the principal source of hydrocarbons for the energy and chemicals industries.
Hydrocarbons are of prime economic importance because they encompass the constituents of the major fossil fuels (coal, petroleum, natural gas, etc.) and biofuels, as well as plastics, waxes, solvents and oils.
www.hallencyclopedia.com /Hydrocarbon   (424 words)

  
 Class Definition for Class 585 - CHEMISTRY OF HYDROCARBON COMPOUNDS
For example, when one claim is to a solid resinous hydrocarbon polymer and another is to a liquid hydrocarbon polymer, the patent is classified as an original in the class which provides for the solid resinous polymer.
hydrocarbon) and separation is accomplished by removing heat, thereby liquefying or solidifying a component of the feed mixture, classification is proper in Class 62, subclasses 606+ and 617+.
Subject matter where the unsaturated hydrocarbon which is hydrogenated is an impurity or contaminant in a desired hydrocarbon, a substantial amount of which desired hydrocarbon is present in the feedstock to the process.
www.uspto.gov /go/classification/uspc585/defs585.htm   (5630 words)

  
 Highbeam Encyclopedia - Search Results for hydrocarbon   (Site not responding. Last check: 2007-10-22)
The hydrocarbons differ both in the total number of carbon and hydrogen atoms in their molecules and in the proportion of hydrogen to carbon.
It boils at 80.1°C and solidifies at 5.5°C. Benzene is a hydrocarbon, with formula C 6 H 6.
Bacterial degradation of hydrocarbon contamination in soil and groundwater.
www.encyclopedia.com /articles/06196.html   (550 words)

  
 Hydrocarbon Ingestion | Poison Control Center - Children's Hospital of Philadelphia
In fact, petroleum distillate refers to a type of hydrocarbon which results from the processing of crude oil, and may be aliphatic or aromatic.
When considering hydrocarbons and the nature of their effects, it is important to remember that these substances may also be vehicles for highly toxic ingredients such as camphor, heavy metals and organophosphate insecticides.
Symptoms of aliphatic hydrocarbon ingestion, in the absence of toxic substituents, are confined to the gastrointestinal tract and the respiratory tract.
www.chop.edu /consumer/jsp/division/generic.jsp?id=72616   (1449 words)

  
 Aromatic hydrocarbon - Wikipedia, the free encyclopedia
is a hydrocarbon, the molecular structure of which incorporates one or more planar sets of six carbon atoms that are connected by delocalised electrons numbering the same as if they consisted of alternating single and double covalent bonds.
The term 'aromatic' was assigned before the physical mechanism determining aromaticity was discovered, and was derived from the fact that many of the compounds have a sweet scent.
The configuration of six carbon atoms in aromatic compounds is known as a benzene ring, after the simplest possible aromatic hydrocarbon, benzene.
en.wikipedia.org /wiki/Aromatic_hydrocarbon   (538 words)

  
 Hydrocarbon
In fact, Hydrocarbon was one of the first solvents to be used in the early days of drycleaning.
Hydrocarbon remained popular for a number of decades, but was replaced by perc.
The problem with Hydrocarbon was not its cleaning qualities but the fact that it is a flammable and explosive solvent.
www.drycleaningmachine.com /hydrocarbon.htm   (268 words)

  
 Hydrocarbons | Poison Control Center - Children's Hospital of Philadelphia
Hydrocarbons have a higher chance than other substances of being aspirated because they are oily and very slippery.
A complication from aspirating hydrocarbons is chemical pneumonia.
Hydrocarbons may be safely used in the home when the instructions on the label are closely followed and the products are kept out of the reach of children.
www.chop.edu /consumer/jsp/division/generic.jsp?id=70988   (528 words)

  
 eMedicine - Toxicity, Hydrocarbons : Article Excerpt by: Michael Levine, MD   (Site not responding. Last check: 2007-10-22)
Hydrocarbons can be classified as being aliphatic, in which the carbon moieties are arranged in a linear or branched chain, or aromatic, in which the carbon moieties are arranged in a ring.
Halogenated hydrocarbons are a subgroup of aromatic hydrocarbons, in which one of the hydrogen molecules is substituted by a halogen group.
The chemical properties of the individual hydrocarbon determine the specific toxicity, while the dose and route of ingestion affect which organs are exposed to the toxicity.
www.emedicine.com /emerg/byname/toxicity-hydrocarbons.htm   (656 words)

  
 The MSDS HyperGlossary: Hydrocarbon
Hydrocarbons can be divided into particular classes depending on their properties.
Hydrocarbons (or other organic molecules) that form a ring are called cyclic.
Hydrocarbons and their chemical derivatives are often quite flammable.
www.ilpi.com /msds/ref/hydrocarbon.html   (786 words)

  
 Aromatic Hydrocarbon Encyclopedia Article @ NaturalResearch.org (Natural Research)   (Site not responding. Last check: 2007-10-22)
Despite the abundance of "sandwich" complexes, in which two cyclic aromatic hydrocarbon ligands flank a metal center, this motif has not been extended to...
An aromatic hydrocarbon (abbreviated as AH) or arene
, is the simplest AH and was recognized as the first aromatic hydrocarbon, with the nature of its bonding first being recognized by Friedrich August Kekulé von Stradonitz in the 19th century.
www.naturalresearch.org /encyclopedia/Aromatic_hydrocarbon   (536 words)

  
 Hydrocarbon Resins Market Study Report - European Adhesives Industry
Hydrocarbon resins, as is the case for all tackifiers, are mostly used in adhesives as modifiers for polymers that have been selected for the specific end use purpose.
The use of hydrocarbon resins has historically developed in substitution for natural product-sourced resins such as rosin derivatives or polyterpenes during times of short supply.
With the development of hydrocarbon resins with lighter colors, better compatibility, enhanced tack with specific elastomers, improved specific adhesion to various substrates, and a broader range of melt points, hydrocarbon resins have now established their own presence.
www.chemquest.com /store/hydrocarbon-resins-european-adhesives.html   (922 words)

  
 SwRI Hydrocarbon Speciation Brochure
In emissions research, hydrocarbon speciation is a powerful tool used to understand the combustion process and to observe the effects of varying gasoline and alternate fuel composition, fuel additives, and emission control hardware.
Analysis of the heavy hydrocarbons from diesel exhaust is performed with an automated thermal sample desorption system coupled to a gas chromatograph/quadrupole mass spectrometer (GC/MS) and a flame ionization detector (FID).
Hydrocarbon speciation data generated by SwRI helped establish California’s Phase II gasoline requirements and were used in the development of the EPA complex model.
www.swri.edu /3pubs/brochure/d08/hycarbs/hycarbs.htm   (716 words)

  
 eMedicine - Toxicity, Hydrocarbons : Article by Michael Levine, MD   (Site not responding. Last check: 2007-10-22)
While the aliphatic hydrocarbons have little GI absorption, aspiration frequently occurs, either initially, or in a semidelayed fashion as the patient coughs or vomits, thereby resulting in pulmonary effects.Once aspirated, the hydrocarbons can create a severe pneumonitis.
Hydrocarbon pneumonitis results from a direct toxic affect by the hydrocarbon on the lung parenchyma.
Many of the hydrocarbons that affect the CNS directly are able to make their way across the blood-brain barrier because certain hydrocarbons are highly lipophilic.
www.emedicine.com /emerg/topic873.htm   (3115 words)

  
 USC Loker Hydrocarbon Research Institute
Hydrocarbon research involves the study and development of the chemistry of methane and higher homologs.
We are preparing new hydrocarbon and electroactive polymers via cationic, anionic and condensation routes and work is currently underway on silicon polymers and silicon derivatives of hydrocarbon polymers.
The Hydrocarbon Institute is active in bringing noted scientists from Universities and Industry to campus to participate in collaborative research as well as in the International Symposium Series.
www-rcf.usc.edu /~petasis/loker.html   (447 words)

  
 Hydrocarbon Technologies' Dramatic Refueling
For 50 years it had been doing leading edge research and development of fuel technologies, and when it was in danger of closing down, the employees broke free from the parent company and bought it out.
The parent company, Hydrocarbon Research Inc. (HRI), was founded by Percival Keith, who at the Manhattan Project had refined uranium for atom bombs, and who then invented a coal-to gas-to liquid fuel process.
HTI is evaluating the use of its technology for converting coal from Shen-hua's deposits directly into light hydrocarbons such as gasoline, jet fuel, and diesel fuels.
www.princetoninfo.com /199806/80610c01.html   (2505 words)

  
 Hydrocarbons Technology - Turner Designs Hydrocarbon Instruments, Inc. - Oil in Water Monitors
Hydrocarbons in water monitors are provided for all oily water applications from pure steam condensate to oilfield produced water.
It is used for hydrocarbon in soil analysis as well as hydrocarbon in water analysis.
The advantages of UV Fluorescence are: high sensitivity to hydrocarbon concentrations to low ppb range, linear response up to 2,000ppm, high immunity to suspended solids and turbidity, and minimal matrix interference.
www.hydrocarbons-technology.com /contractors/instrumentation/turner   (955 words)

  
 BLAST Search Results
45 0.024 gbU08986.1RNU08986 Rattus norvegicus aryl hydrocarbon rec...
45 0.024 gbU61184.1RNU61184 Rattus norvegicus aryl hydrocarbon rec...
41 0.59 gbU61157.1RNU61157 Rattus norvegicus aryl hydrocarbon rec...
www.chickest.udel.edu /orthochick/c139.html   (1775 words)

  
 hydrocarbon microbial bioaugmentation bioremediation - microbes, oil spills
The remediation of hydrocarbons is achieved by adding large amounts of these microbes, that naturally breakdown hydrocarbons, to a spill.
This is possible because the microbes use parts of the hydrocarbons to maintain their own metabolic process.
Heavy greases and old residual weathered hydrocarbons with high molecular weights are also degraded.
www.bioremediate.com /hydrocarbon.htm   (569 words)

  
 Hydrocarbon Removal | MYCELX Technologies Corporation
Saturated MYCELX hydrocarbon removal cartridges can be safely incinerated and even used to generate energy due to their positive BTU content.
MYCELX hydrocarbon removal cartridges can be applied to tank berms, waste drums, rinse water, loading and unloading berms, process water.
MYCELX hydrocarbon removal products can be found in the industrial wastewater, marine and oil-spill remediation industries.
www.mycelx.com /technology/related_hydrocarbonremoval.asp   (224 words)

  
 Mineral & Petroleum Resources - Hydrocarbon Basin Analysis
The hydrocarbon resources of New Brunswick include coal, oil, natural gas, oil shale, and a solid bitumen called albertite.
All known hydrocarbon deposits are located in the Late Devonian–Carboniferous Maritimes Basin, which underlies the eastern part of the province.
The key objective of its hydrocarbon program is to promote hydrocarbon exploration in the province.
www.gnb.ca /0078/minerals/Hydrocarbon_Basin_Analysis-e.asp   (593 words)

  
 Hydrocarbon "metabolism"
In this paper, we consider the "intermediary metabolism" of a hydrocarbon assembler, i.e., the set of reactions that permit processing of the feedstock molecules and their conversion into molecular tools (positionally controlled carbenes, radicals, and other reactive species).
The stiff hydrocarbons include a wide enough class of materials to be a very attractive goal (diamond, graphite, and structurally related materials are included in this class).
As the radical will have to approach the butadiyne quite closely during the radical addition, and as the hydrocarbon structure confining the butadiyne will also have to be in close proximity to the butadiyne, allowing close proximity between the silicon radical and the confining structure relaxes a significant design constraint.
www.zyvex.com /nanotech/hydroCarbonMetabolism.html   (7669 words)

  
 Hydrocarbon - home page   (Site not responding. Last check: 2007-10-22)
Since the first discovery of oil by Woodside on their Chinguetti offshore prospect in 2001, there has been considerable interest in hydrocarbon exploration in Mauritania in particular in the Coastal Basin.
It is anticipated that Mauritanian hydrocarbon sector will become a major player in the country's economy.
Mauritania comprises four large geographical/geological units (Figure 1), two of which have potential for hydrocarbons, the Mauritania Coastal Basin which straddles the coastline, extending southward to Senegal and the intracratonic Taoudeni Basin covering half of the country and opening eastward into Mali.
www.bgs.ac.uk /mmi/english/hydrocarbons/home.html   (448 words)

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