Polycyclic Hydrocarbons, Aromatic
Receptors, Aryl Hydrocarbon
Hydrocarbons, Aromatic
Tetrachlorodibenzodioxin
Aryl Hydrocarbon Receptor Nuclear Translocator
Hydrocarbons, Chlorinated
Cytochrome P-450 CYP1A1
Benzo(a)pyrene
Aryl Hydrocarbon Hydroxylases
Alkanes
Petroleum
Benz(a)Anthracenes
Benzopyrenes
Dioxins
Biodegradation, Environmental
Soil Pollutants
Hydrocarbons, Alicyclic
Environmental Pollutants
Hydrocarbons, Acyclic
Fuel Oils
Gasoline
Water Pollutants, Chemical
Carcinogens
DNA Adducts
Environmental Monitoring
Benzoflavones
Alkenes
Coal Tar
Enzyme Induction
Polychlorinated Biphenyls
beta-Naphthoflavone
Gas Chromatography-Mass Spectrometry
Bay-Region, Polycyclic Aromatic Hydrocarbon
Creosote
Acenaphthenes
Cytochrome P-450 Enzyme System
Air Pollutants
Chromatography, Gas
Biotransformation
Integumentary System
7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide
Xylenes
Benzopyrene Hydroxylase
Mutagens
Xenobiotics
Gulf of Mexico
Air Pollutants, Occupational
9,10-Dimethyl-1,2-benzanthracene
Occupational Exposure
Benzene
Vehicle Emissions
Octanes
Oil and Gas Fields
Soil Microbiology
Water Pollution, Chemical
Cytochrome P-450 CYP1A2
Naphthalenes
Sex Attractants
Geologic Sediments
Mineral Oil
Hydrocarbons, Cyclic
Lipid Bilayers
Coal
Environmental Exposure
Dihydroxydihydrobenzopyrenes
Liver
Solvents
Bacteria
Hexanes
Ants
Molecular Structure
Oxygenases
Fundulidae
Basic Helix-Loop-Helix Transcription Factors
Structure-Activity Relationship
Pheromones
Particulate Matter
Molecular Sequence Data
Environmental Pollution
Mutagenicity Tests
Microsomes, Liver
Epoxy Compounds
RNA, Messenger
Water Pollutants
Water Microbiology
Sarcina
Metabolic Detoxication, Drug
Chlorofluorocarbons, Methane
Animal Shells
Incineration
Oils, Volatile
Methane
Phosphatidylcholines
Fossil Fuels
Biofuels
Ligands
Metallurgy
Pentanes
Trichloroethylene
Extraction and Processing Industry
Water
Inhalation Exposure
Mixed Function Oxygenases
7-Alkoxycoumarin O-Dealkylase
Surface-Active Agents
Volatile Organic Compounds
Species Specificity
Alcohols
X-Ray Diffraction
Hazardous Waste
Volatilization
Glutathione Transferase
Monoterpenes
Dose-Response Relationship, Drug
Chromatography, High Pressure Liquid
Cooking
Complex Mixtures
Temperature
Oils
Maternal Exposure
Membranes, Artificial
Chromatography, Thin Layer
Chloracne
Calorimetry, Differential Scanning
DNA
Blattellidae
Epoxide Hydrolases
Solid Phase Microextraction
Oxidation-Reduction
Ponds
Pseudomonas
Dioxygenases
Organic Chemicals
RNA, Ribosomal, 16S
Waxes
Environmental Remediation
Gene Expression Regulation, Enzymologic
Cells, Cultured
Pseudomonas putida
Maximum Allowable Concentration
Stereoisomerism
Soil
Naphthols
Sphingomonas
Gases
Industry
Thermodynamics
Hydrophobic interaction of human, mouse, and rabbit interferons with immobilized hydrocarbons. (1/984)
Interferons of human, mouse, and rabbit origin bind to straight chain hydrocarbons immobilized on agarose. The hydrophobic nature of binding is established by the following observations: (a) a positive correlation between the length of hydrocarbon ligand and the strength of interaction; (b) a stronger interaction with hydrocarbon ligands terminated with apolar rather than polar head groups; (c) a lack of dependence of binding on ionic strength and pH of the solvent; (d) a reversal of binding by ethylene glycol, a hydrophobic solute; (e) an increasing eluting efficacy of tetraalkylammonium ions with the length of their alkyl substituents. The hydrophobic interactions of human interferon underlie the efficiency of two-step chromatographic procedures. For example, human embryo kidney interferon can be purified about 3,600-fold by sequential chromatography on (a) concanavalin A-agarose, (b) octyl-agarose. Another two-step procedure: (a) concanavalin A-agarose, (b) L-tryptophan-agarose, gives about 10,000-fold purification. The overall recovery of interferon in both cases in close to 90%. (+info)Hydrocarbon chain packing and the effect of ethanol on the thermotropic phase behavior of mixed-chain phosphatidylglycerols. (2/984)
Previous studies in this laboratory have delineated the relationship between the acyl chain asymmetry of mixed-chain phosphatidylcholines and the effect of ethanol concentration ([EtOH]) on their melting behavior (Li et al., Biophys J., 70 (1996) 2784-2794). This present investigation extends these findings to another phospholipid family by using high-resolution differential scanning calorimetry (DSC) to characterize the effect of ethanol concentration on the main phase transition temperature (Tm) of five molecular species of mixed-chain phosphatidylglycerol (PG). For C(14):C(18)PG, C(15):C(17)PG, C(16):C(16)PG, and C(17):C(15)PG, a biphasic profile in the Tm versus [EtOH] plot was observed, and the minimum in the plot for each PG occurred at 33, 15, 19, and 36 mg/ml, respectively. This biphasic behavior is typical of phospholipids whose acyl chain asymmetry is fairly small. For C(18):C(14)PG, only a linear decrease in the Tm was observed as a function of ethanol concentration; this effect is characteristic of highly asymmetric phospholipids. Our DSC results obtained with mixed-chain PG in the presence of ethanol demonstrate that the acyl chain asymmetry of the five lipids studied can be ranked as follows: C(15):C(17)PGResolution and purification of histones on homologous series of hydrocarbon-coated agaroses. (3/984)
Hydrophobic chromatography on alkyl-agarose columns has been applied to the fractionation of histones. This paper describes: (a) a two-column method for the resolution of whole histone from calf thymus into its five main components (H1, H2a, H2b, H3 and H4), (b) a rapid one-step procedure for the isolation of the H3 fraction from whole histone, (c) an alternative one-step procedure for the resolution of H3 and H2a (which co-elute during gel exclusion chromatography on Biogel P-60). These experiments are also used for gaining further insight into the mechanism of action of hydrocarbon-coated agaroses. (+info)Histone-hydrocarbon interaction. Partition of histones in aqueous two-phase systems containing poly(ethylene glycol)-bound hydrocarbons. (4/984)
The hydrophobic properties of histones have been examined with help of the two-phase partition technique using dextran-poly(ethylene glycol)-water systems. We have found that different fatty acid esters of poly(ethylene glycol) interact with total histones in a manner similar to proteins of the type beta-lactoglobulin and serum albumins. Thus the maximum interaction occurs when the fatty acid contains 16-18 carbon atoms. With less than eight carbon atoms in the polymer-bound fatty acid, no histone-hydrocarbon interaction is observed. The interaction of the five individual histone fractions with palmitate depends on the type of salt used and on its concentration. We suggest that the histones can be divided into three groups with decreasing hydrophobic properties: H3, H2a greater than H4, H2b greater than H1. (+info)Toxic polyneuropathy of shoe-industry workers. A study of 122 cases. (5/984)
The toxic polyneuropathy observed in a group of shoe-industry workers in Italy was clinically characterised by a symmetrical prevalently distal motor deficit, with occasional marked weakness of pelvic girdle muscles, and frequently by only subjective sensory symptoms; non-specific disturbances usually preceded neurological signs. Subclinical cases of 'minimal' chronic neuropathy, characterised by alterations of a neurogenic type in the EMG without a reduction of motor nerve conduction velocity, were also observed. Worsening of the clinical picture, with further lowering of nerve conduction velocity, was noted in some cases up to four months after removal from the toxic environment. In the most severe cases clinical recovery took up to three years. The electromyographic and electroneurographic features were consistent with a mixed axonal neuropathy, with clear prevalence of the damage in the distal part of the nerve (dying-back neuropathy). Volatile substances, such as n-hexane and other low boiling point hydrocarbons found in high percentage in solvents and glues, are suggested as the causative agent. (+info)Microbial oxidation of methane and methanol: isolation of methane-utilizing bacteria and characterization of a facultative methane-utilizing isolate. (6/984)
A methane-utilizing organism capable of growth both on methane and on more complex organic substrates as a sole source of carbon and energy, has been isolated and studied in detail. Suspensions of methane-grown cells of this organism oxidized C-1 compounds (methane, methanol, formaldehyde, formate); hydrocarbons (ethane, propane); primary alcohols (ethanol, propanol); primary aldehydes (acetaldehyde, propionaldehyde); alkenes (ethylene, propylene); dimethylether; and organic acids (acetate, malate, succinate, isocitrate). Suspensions of methanol-or succinate-grown cells did not oxidize methane, ethane, propane, ethylene, propylene, or dimethylether, suggesting that the enzymatic systems required for oxidation of these substrates are induced only during growth on methane. Extracts of methane-grown cells contained a particulate reduced nicotinamide adenine dinucleotide-dependent methane monooxygenase activity. Oxidation of methanol, formaldehyde, and primary alcohols was catalyzed by a phenazine methosulfate-linked, ammonium ion-requiring methanol dehydrogenase. Oxidation of primary aldehydes was catalyzed by a phenazine methosulfate-linked, ammonium ion-independent aldehyde dehydrogenase. Formate was oxidized by a nicotinamide adenine dinucleotide-specific formate dehydrogenase. Extracts of methane-grown, but not succinate-grown, cells contained the key enzymes of the serine pathway, hydroxypyruvate reductase and malate lyase, indicating that the enzymes of C-1 assimilation are induced only during growth on C-1 compounds. Glucose-6-phosphate dehydrogenase was induced during growth on glucose. Extracts of methane-grown cells contained low levels of enzymes of the tricarboxylic acid cycle, including alpha-keto glutarate dehydrogenase, relative to the levels found during growth on succinate. (+info)Inhibition of Bacillus subtilis spore germination by various hydrophobic compounds: demonstration of hydrophobic character of the L-alanine receptor site. (7/984)
L-Alanine-initiated germination of Bacillus subtilis spores was inhibited by various kinds of hydrophobic compounds. Good correlation of inhibitory effect with hydrophobicity of the compound was demonstrated by using regression analysis in which the hydrophobic character was expressed by the partition coefficient in an octyl alcohol-water system. The correlation coefficient for 20 alcohols was 0.959, and that for 19 miscellaneous compounds was 0.906. Regression lines of the alcohols and other hydrophobic compounds were almost identical, showing that hydrophobic interaction played an important role in inhibition. Diphenylamine was one of the most effective inhibitors examined. n-Octyl, n-nonyl, and n-decyl alcohols were the most effective alcohols. The mode of inhibition by diphenylamine and n-octyl alcohol was a "mixed type" (competitive plus noncompetitive type) with respect to L-alanine; that by D-alanine was competitive inhibition. Sites for diphenylamine, n-octyl alcohol, and D-alanine may have overlapped. Inhibition was reversible by washing; heat resistance, stainability, and germination rate of the washed spores remained unaltered. Thus, we confirmed that the inhibition may occur before the initial trigger reaction of germination and that it may be due to the interaction between a hydrophobic compound and a hydrophobic region closely associated with the L-alanine receptor site on the spore. (+info)Molecular analysis of microbial community structures in pristine and contaminated aquifers: field and laboratory microcosm experiments. (8/984)
This study used phylogenetic probes in hybridization analysis to (i) determine in situ microbial community structures in regions of a shallow sand aquifer that were oxygen depleted and fuel contaminated (FC) or aerobic and noncontaminated (NC) and (ii) examine alterations in microbial community structures resulting from exposure to toluene and/or electron acceptor supplementation (nitrate). The latter objective was addressed by using the NC and FC aquifer materials for anaerobic microcosm studies in which phylogenetic probe analysis was complemented by microbial activity assays. Domain probe analysis of the aquifer samples showed that the communities were predominantly Bacteria; Eucarya and Archaea were not detectable. At the phylum and subclass levels, the FC and NC aquifer material had similar relative abundance distributions of 43 to 65% beta- and gamma-Proteobacteria (B+G), 31 to 35% alpha-Proteobacteria (ALF), 15 to 18% sulfate-reducing bacteria, and 5 to 10% high G+C gram positive bacteria. Compared to that of the NC region, the community structure of the FC material differed mainly in an increased abundance of B+G relative to that of ALF. The microcosm communities were like those of the field samples in that they were predominantly Bacteria (83 to 101%) and lacked detectable Archaea but differed in that a small fraction (2 to 8%) of Eucarya was detected regardless of the treatment applied. The latter result was hypothesized to reflect enrichment of anaerobic protozoa. Addition of nitrate and/or toluene stimulated microbial activity in the microcosms, but only supplementation of toluene alone significantly altered community structures. For the NC material, the dominant subclass shifted from B+G to ALF, while in the FC microcosms 55 to 65% of the Bacteria community was no longer identifiable by the phylum or subclass probes used. The latter result suggested that toluene exposure fostered the proliferation of phylotype(s) that were otherwise minor constituents of the FC aquifer community. These studies demonstrated that alterations in aquifer microbial communities resulting from specific anthropogenic perturbances can be inferred from microcosm studies integrating chemical and phylogenetic probe analysis and in the case of hydrocarbon contamination may facilitate the identification of organisms important for in situ biodegradation processes. Further work integrating and coordinating microcosm and field experiments is needed to explore how differences in scale, substrate complexity, and other hydrogeological conditions may affect patterns observed in these systems. (+info)The condition is caused by an adverse reaction to certain medications, specifically chlorpromazine and other related drugs. The exact mechanism of how these medications cause chloracne is not fully understood, but it is thought to involve changes in the immune system and hormone levels.
Chloracne typically appears within 2-4 weeks after starting treatment with chlorpromazine or another related medication. It may present as a mild, moderate, or severe form of acne, with papules, pustules, nodules, or cysts on the skin. In some cases, the condition may resolve once the medication is discontinued, but in other cases, it may persist for several months after stopping the medication.
There is no specific treatment for chloracne, and management of the condition involves discontinuing the offending medication and using topical or systemic therapies to control symptoms. Treatment options may include antibiotics, retinoids, corticosteroids, and other medications that are commonly used to treat acne. In severe cases, surgical intervention may be necessary to remove large cysts or scarring.
Preventing chloracne involves monitoring patients for signs of the condition while they are taking chlorpromazine or other related medications, and stopping the medication if any signs of the condition appear. In addition, alternative medications that do not carry the risk of chloracne may be considered for patients who require treatment with these drugs.
Overall, chloracne is a relatively rare but potentially serious side effect of certain medications, and prompt recognition and management are essential to prevent long-term scarring and other complications.
Onshore (hydrocarbons)
Offshore (hydrocarbons)
National Hydrocarbons Institute
National Hydrocarbons Commission
Ministry of Hydrocarbons
Directorate General of Hydrocarbons
Hydrocarbon
Thermal rearrangement of aromatic hydrocarbons
Hydrocarbons Licensing Directive Regulations 1995
Hydrocarbon keratosis
Platonic hydrocarbon
Hydrocarbon poisoning
Unsaturated hydrocarbon
Alternant hydrocarbon
Hydrocarbon mixtures
Unburned hydrocarbon
Hydrocarbon indicator
Hydrocarbon exploration
Hydrocarbon economy
Hydrocarbon pneumonitis
Hydrocarbon plant
Hydrocarbon fuel
Total petroleum hydrocarbon
Bangladesh Hydrocarbon Unit
Hydrocarbon dew point
Hydrocarbon Oil Duty
Polycyclic aromatic hydrocarbon
Aryl hydrocarbon receptor
Ministry of Energy, Hydropower and Hydrocarbons (Guinea)
Loker Hydrocarbon Research Institute
Toxicological Profiles | ATSDR
Polycyclic Aromatic Hydrocarbons (PAHs) Laboratory Capacity | CDC
Total Petroleum Hydrocarbons (TPH) | ToxFAQsâ„¢ | ATSDR
Hydrocarbon pneumonia: MedlinePlus Medical Encyclopedia
polycyclic aromatic hydrocarbon
Classifying Polycyclic Aromatic Hydrocarbons by Carcinogenic Potency Using In Vitro Biosignatures
Tag: hydrocarbons | Evolution News
Hydrocarbon - New World Encyclopedia
Hydrocarbon Inhalation Injury: Practice Essentials, Pathophysiology, Etiology
MSA - Hydrocarbons Technology
NTP Review of Polycyclic Aromatic Hydrocarbons (PAHs)
Phase behavior of single and multi-component liquid hydrocarbons in real reservoir rocks | Scientific Reports
Browsing by Subject "Hydrocarbons, Halogenated"
Cleaning after petrochemicals and light hydrocarbons
Gulf Coast (PADD 3) Imports of Other Hydrocarbons/Oxygenates (Thousand Barrels)
Classifying polycyclic aromatic hydrocarbons by carcinogenic potency using in vitro biosignatures
Hydrocarbon Processing Site License
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PAHs6
- First was the presence of polycyclic aromatic hydrocarbons (PAHs). (britannica.com)
- heart defects after exposure to polycyclic aromatic hydrocarbons (PAHs) from the oil. (britannica.com)
- One of the most difficult challenges for risk assessment is evaluation of chemicals that predominately co-occur in mixtures like polycyclic aromatic hydrocarbons (PAHs). (nih.gov)
- Cigarette smoking has been known as the prominent cause of lung cancer, and polycyclic aromatic hydrocarbons (PAHs), the major carcinogens in cigarette smoke, have been suggested as being responsible for the initiation and development of lung cancer. (nih.gov)
- Polycyclic Aromatic Hydrocarbons (PAHs) are a class of organic pollutants that are commonly found in the environment, largely due to combustion or processing of hydrocarbon fuels. (who.int)
- Food can be contaminated by PAHs because of the contamination of air, water or soil, and during industrial process, as heating, drying and Polycyclic aromatic hydrocarbons (PAHs) are a group of over 200 smoking process. (bvsalud.org)
Polycyclic8
- carcinogens for humans are the polycyclic aromatic hydrocarbons, which require metabolic activation for becoming reactive. (britannica.com)
- Polycyclic hydrocarbons affect many target organs and usually produce cancers at the site of exposure. (britannica.com)
- Polycyclic hydrocarbons are hydrocarbons that contain more than one ring. (britannica.com)
- Classifying Polycyclic Aromatic Hydrocarbons by Carcinogenic Potency Using In Vitro Biosignatures [ Abstract Classifying Polycyclic Aromatic Hydrocarbons by Carcinogenic Potency Using In Vitro Biosignatures ] [ Synopsis Classifying Polycyclic Aromatic Hydrocarbons by Carcinogenic Potency Using In Vitro Biosignatures ] Chang Y, Huynh CTT, Bastin KM, Rivera BN, Siddens LK, Tilton SC. (nih.gov)
- N2 - This study presents results of cytotoxicity and Aryl Hydrocarbon Receptor-Mediated Activity of N-heterocyclic Polycyclic Aromatic Hydrocarbons along with their parental compounds determined in a model in vitro system. (muni.cz)
- Chromium(VI) exposure enhances polycyclic aromatic hydrocarbon-DNA binding at the p53 gene in human lung cells. (nih.gov)
- IMSEAR at SEARO: Polycyclic aromatic hydrocarbons in ambient air at Agra: distribution and toxicity assessment. (who.int)
- Rajput N, Khemani LD, Lakhani A. Polycyclic aromatic hydrocarbons in ambient air at Agra: distribution and toxicity assessment. (who.int)
Exposure1
- Inhalation injury due to hydrocarbons can occur as a result of either accidental or intentional exposure. (medscape.com)
Liquid hydrocarbons1
- Petroleum is a mixture of liquid hydrocarbons, while natural gas is mainly constituted of methane gas. (newworldencyclopedia.org)
Methane4
- The simplest hydrocarbon is methane , the main constituent of natural gas . (newworldencyclopedia.org)
- Direct non-oxidative methane conversion to higher hydrocarbons is a potential approach to convert natural gas into valuable hydrocarbons. (aiche.org)
- The haze results from chemical reactions in the upper atmosphere, where ultraviolet radiation from the sun ionizes nitrogen and methane, which react to form tiny hydrocarbon particles tens of nanometers in diameter. (scitechdaily.com)
- Experiments reported some years ago subjected methane to high pressures and temperatures and found that heavier hydrocarbons formed from methane under very similar pressure and temperature conditions. (science20.com)
Toxicity1
- Two primary organ systems are affected by inhalation hydrocarbon toxicity: the CNS and the cardiopulmonary system. (medscape.com)
Volatile4
- Deliberate inhalation of volatile hydrocarbons for their mood-altering effects is popular among adolescents. (medscape.com)
- Most inhalants are composed of several compounds, and almost all pressurized aerosol products can be abused because the propellants are volatile hydrocarbons. (medscape.com)
- Volatile hydrocarbons are highly lipid soluble and readily cross the blood-brain barrier. (medscape.com)
- Users discouraged by the fact that hydrocarbons like propane and butane are often used as fuels and are designated volatile should keep two points in mind: volatile refers to how easily a substance will vaporize, not it's instability, and the FDA confirmed hydrocarbon extractions as GRAS (generally regarded as safe) several decades ago. (weedmaps.com)
Petroleum13
- This fact sheet answers the most frequently asked health questions about total petroleum hydrocarbons (TPH). (cdc.gov)
- Total petroleum hydrocarbons (TPH) is a term used to describe a large family of several hundred chemical compounds that originally come from crude oil. (cdc.gov)
- Scientists divide TPH into groups of petroleum hydrocarbons that act alike in soil or water. (cdc.gov)
- These groups are called petroleum hydrocarbon fractions. (cdc.gov)
- What happens to total petroleum hydrocarbons (TPH) when they enter the environment? (cdc.gov)
- How might I be exposed to total petroleum hydrocarbons (TPH)? (cdc.gov)
- How can total petroleum hydrocarbons (TPH) affect my health? (cdc.gov)
- How likely are total petroleum hydrocarbons (TPH) to cause cancer? (cdc.gov)
- Is there a medical test to show whether I've been exposed to total petroleum hydrocarbons (TPH)? (cdc.gov)
- Hydrocarbons are obtained by refining petroleum at refineries such as this one. (newworldencyclopedia.org)
- Hydrocarbons are the main constituents of petroleum (literally, "rock oil"), also called "oil," and natural gas . (newworldencyclopedia.org)
- Sorption and desorption of petroleum hydrocarbons on biodegradable and nondegradable microplastics. (bvsalud.org)
- However, their interactions with petroleum hydrocarbons (PHs) have not been sufficiently studied. (bvsalud.org)
Aryl2
- The aryl hydrocarbon receptor (AHR) and the AHR nuclear translocator (ARNT) constitute a heterodimeric basic helix-loop-helix-Per-ARNT-Sim (bHLH-PAS) domain containing transcription factor with central functions in development and cellular homeostasis. (rcsb.org)
- We also show that Aryl Hydrocarbon Receptor (AHR), a transcription factor, is a major regulator of de novo sphingolipid synthesis. (nih.gov)
Arenes1
- Aromatic hydrocarbons, or arenes: Each molecule of an aromatic hydrocarbon contains at least one aromatic ring, in which the bonds between carbon atoms are aromatic bonds. (newworldencyclopedia.org)
Aromatic compounds1
- When organic compounds are considered in general, saturated and unsaturated hydrocarbons are placed in the category known as aliphatic compounds , while aromatic hydrocarbons are categorized as aromatic compounds . (newworldencyclopedia.org)
Inhalation5
- The minimum observation period after inhalation of a hydrocarbon is 6 hours. (medlineplus.gov)
- Inhalant abuse, the deliberate inhalation of hydrocarbons as a form of recreational drug use, has become a significant health issue affecting children. (medscape.com)
- Death from intentional inhalation of hydrocarbon fumes is not uncommon and is usually due to sudden cardiac events or CNS depression. (medscape.com)
- The majority of intoxication reports of hydrocarbons are due to inhalation or ingestion, but a few case reports have described intravenous ingestion of gasoline for suicide. (medscape.com)
- Recreational abuse of hydrocarbons by inhalation is accomplished in 3 ways: sniffing, huffing, and bagging. (medscape.com)
Mixtures2
- The deviation between the measured vaporization temperatures and the bulk measurements ranged from 4.4% (1.6% in Kelvin unit) to 19.7% (5.2% in Kelvin unit) with single-component solvents and 1.4% (0.4% in Kelvin unit) to 27.6% (5.3% in Kelvin unit) with the hydrocarbon mixtures. (nature.com)
- The deviation percentages of measured vaporization temperatures from the computed values were at least 4.4% (1.6% in Kelvin unit) with single-component solvents and 2.1% (0.7% in Kelvin unit) with the hydrocarbon mixtures. (nature.com)
Synthesis3
- In addition, many hydrocarbons serve as base materials for the synthesis of organic chemicals used in the production of consumer products and industrial materials. (newworldencyclopedia.org)
- The reversibility implies that the synthesis of saturated hydrocarbons is thermodynamically controlled and does not require organic matter. (science20.com)
- The synthesis and stability of the compounds studied here as well as heavier hydrocarbons over the full range of conditions within the Earth's mantle now need to be explored. (science20.com)
Intoxication1
- Hydrocarbons may be inhaled intentionally for intoxication, especially by adolescents. (medlineplus.gov)
Solvents2
- Hydrocarbon pneumonia is caused by drinking or breathing in gasoline , kerosene , furniture polish , paint thinner, or other oily materials or solvents. (medlineplus.gov)
- This is because a small number of hydrocarbons are organic solvents, capable of dissolution and dispersal of carbon-based substances - namely plant matter. (weedmaps.com)
Hexane1
- Hydrocarbons like butane, propane, and hexane have been used for food extractions since the 1970s. (weedmaps.com)
Humans1
- Some halogenated hydrocarbons / this publication represents the views and expert opinions of an IARC Working Group on the Evaluation of the Carcinogenic Risk of Chemicals to Humans, which met in Lyon, 6-13 June 1978. (who.int)
Refining1
- Hydrocarbon Processing also features new and improved licensed product/process methodologies in the petrochemical, refining and LNG/gas processing industries. (hydrocarbonprocessing.com)
Chemical3
- Most children who drink or inhale hydrocarbon products and develop chemical pneumonitis (lung inflammation without infection) recover fully following treatment. (medlineplus.gov)
- A hydrocarbon is any chemical compound that is constituted of just the elements carbon (C) and hydrogen (H). Each hydrocarbon molecule consists of a carbon backbone, or "carbon skeleton," with hydrogen atoms attached to that backbone. (newworldencyclopedia.org)
- The hydrocarbon products did not change for many hours, but the tell-tale chemical signatures began to fade after a few days. (science20.com)
Exploration3
- Apatite fission-track annealing: experimentation and applications for hydrocarbons exploration. (europa.eu)
- New Exploration Licensing Policy (NELP) was formulated by the Government of India, during 1997-98 to provide a level playing field to both Public and Private sector companies in exploration and production of hydrocarbons with Directorate General of Hydrocarbons (DGH) as a nodal agency for its implementation. (dghindia.org)
- NELP has not only accelerated the quest for hydrocarbon exploration, but has also brought the state of the art technology and efficiency of operations /management to the country. (dghindia.org)
Extraction10
- The extraction of liquid hydrocarbon fuel from a number of sedimentary basins has been integral to modern energy development. (newworldencyclopedia.org)
- Compared to more traditional, ancestral methods of extraction (like grain alcohol or cold water), hydrocarbon extraction is technically a new science. (weedmaps.com)
- What is hydrocarbon extraction? (weedmaps.com)
- Like any extraction process, the goal of hydrocarbon extraction is to separate essential oils from plant matter in order to concentrate the active components of the plant. (weedmaps.com)
- Hydrocarbon extraction, specifically, is notably efficient due to its negative polarity (it will dissolve some parts of the plant while keeping others intact) and super-low boiling points (-43 degrees Farenheit for propane and 30 degrees for butane). (weedmaps.com)
- How does hydrocarbon extraction work? (weedmaps.com)
- Primary extraction involves washing cannabis with cold hydrocarbons in the pressurized main chamber of a multi-chamber extractor. (weedmaps.com)
- Once the hydrocarbon has been purged from the extracted waxes, fats, and lipids, it can travel back to the main chamber to be used repeatedly (little to no gas escapes into the atmosphere), a system commonly referred to as closed-loop extraction. (weedmaps.com)
- Overall, the process of hydrocarbon extraction is widely considered one of the safest, cleanest, most efficient methods of extraction. (weedmaps.com)
- Hydrocarbon extraction is prized for its purity and efficacy. (weedmaps.com)
Hydrogen3
- TPH is a mixture of chemicals, but they are all made mainly from hydrogen and carbon, called hydrocarbons. (cdc.gov)
- Ethane , with the formula C 2 H 6 , is a hydrocarbon (more specifically, an alkane ) in which each molecule has two carbon atoms held together with a single covalent bond , and three hydrogen atoms are bound to each carbon atom. (newworldencyclopedia.org)
- Both of these hydrocarbons, and others associated with fuel, are called saturated hydrocarbons because they have simple, single bonds and are saturated with hydrogen. (science20.com)
Scientists1
- Scientists have debated for years whether some of these hydrocarbons could also have been created deeper in the Earth and formed without organic matter. (science20.com)
Oils1
- hydrocarbon found among all types of oils, with the highest median values. (bvsalud.org)
Gasoline1
- The gasoline that serves as fuel for automobiles consists primarily of hydrocarbons. (newworldencyclopedia.org)
Article1
- This article featuring ExxonMobil in Hydrocarbon Engineering magazine highlights how our team helped offshore North Sea JV license-holders monetize 20 years of reliable operations, by using the built-in flexibility on FELEXORB SE solvent to handle new gas nominations without a solvent changeover. (exxonmobilchemical.com)
Highly2
- Highly toxic hydrocarbons may rapidly cause respiratory failure and death. (medlineplus.gov)
- One of the highly common physical phenomena in hydrocarbon reservoirs, during production or injection stages, is the fluid phase alteration due to the change of regional pressure or temperature. (nature.com)
Types1
- This paper studies the vaporization of single- and multicomponent hydrocarbons in different types of rocks (namely sandstones, limestones, tight sandstones, and shales). (nature.com)
Water1
- Hydrocarbon Processing brings readers first-hand knowledge on plant safety and the environment, utilities-cogeneration, pump, valves and compressors, heat transfer and water management. (hydrocarbonprocessing.com)
Products1
- Since 2001, The US Consumer Product Safety Commission has required child-resistant packing of products that have low viscosity and contain greater than 10% hydrocarbon by weight. (medscape.com)
Materials1
- If you have young children, be sure to identify and carefully store materials containing hydrocarbons. (medlineplus.gov)
Work1
- Singled out for his 'vast experience in regulatory, contractual and M&A matters' , Nilton Mattos is another name to note for hydrocarbons work. (legal500.com)