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Articoli di riviste sul tema "Hydrocarbons"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Walsh, Justin, Luigi Pontieri, Patrizia d'Ettorre, and Timothy A. Linksvayer. "Ant cuticular hydrocarbons are heritable and associated with variation in colony productivity." Proceedings of the Royal Society B: Biological Sciences 287, no. 1928 (2020): 20201029. http://dx.doi.org/10.1098/rspb.2020.1029.

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In social insects, cuticular hydrocarbons function in nest-mate recognition and also provide a waxy barrier against desiccation, but basic evolutionary features, including the heritability of hydrocarbon profiles and how they are shaped by natural selection are largely unknown. We used a new pharaoh ant ( Monomorium pharaonis ) laboratory mapping population to estimate the heritability of individual cuticular hydrocarbons, genetic correlations between hydrocarbons, and fitness consequences of phenotypic variation in the hydrocarbons. Individual hydrocarbons had low to moderate estimated herita

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2

Fan, Yongliang, Jody Chase, Veeresh L. Sevala, and Coby Schal. "Lipophorin-facilitated hydrocarbon uptake by oocytes in the German cockroachBlattella germanica(L.)." Journal of Experimental Biology 205, no. 6 (2002): 781–90. http://dx.doi.org/10.1242/jeb.205.6.781.

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SUMMARYLarge amounts of hydrocarbons accumulate during vitellogenesis in the developing basal oocytes of the German cockroach Blattella germanica (L.), and all ovarian hydrocarbons are deposited into an egg case (ootheca) during oviposition. Hydrocarbons are not synthesized by the ovaries, but are delivered by hemolymph lipoproteins and accumulate within the basal oocytes. A native B. germanica hydrocarbon, [3H]3,11-dimethylnonacosane, injected into adult females of various ages, was taken up by the ovaries in relation to oocyte growth. Ovarian uptake of the hydrocarbon was low in day 0–1 fema

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Rida, Siddique* Komal Siddiqui Noor-e.-Saba and Faria Aslam. "SCREENING OF ASPERGILLUS NIGER FOR BIODEGARADATION OF DIFFERENT HYDROCARBONS." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 09 (2018): 9084–90. https://doi.org/10.5281/zenodo.1433697.

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Today hydrocarbons/oil pollution causes serious damage to our environment. Chemical or physical methods are failed to degrade such contaminants hence biodegradation provides simple and cost effective process. In this study the biodegradation potential of Aspergillus niger for different hydrocarbons was analyzed. Two kinds of hydrocarbons i.e. edible (almond oil, mustard oil and cooking oil) and non-edible (engine oil, diesel and petrol) were used. For the initial screening, culture was inoculated in Bushnell-Haas (BH) plate assay each plate containing respective hydrocarbon. Aspergillus niger

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4

Petrů, Jiří, Tomáš Herink, Jan Patera, and Petr Zámostný. "Co-Pyrolysis of Unsaturated C4 and Saturated C6+ Hydrocarbons—An Experimental Study to Evaluate Steam-Cracking Performance." Materials 16, no. 4 (2023): 1418. http://dx.doi.org/10.3390/ma16041418.

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Unsaturated C4 hydrocarbons are abundant in various petrochemical streams. They can be considered as a potential feedstock for the steam-cracking process, where they must be co-processed with C6 and higher (C6+) hydrocarbons of primary naphtha fractions. Co-pyrolysis experiments aiming at the comparison of different C4 hydrocarbon performances were carried out in a laboratory micro-pyrolysis reactor under standardized conditions: 820 °C, 400 kPa, and 0.2 s residence time in the reaction zone. C4 hydrocarbons were co-pyrolyzed with different co-pyrolysis partners containing longer hydrocarbon c

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5

Lea-Smith, David J., Steven J. Biller, Matthew P. Davey, et al. "Contribution of cyanobacterial alkane production to the ocean hydrocarbon cycle." Proceedings of the National Academy of Sciences 112, no. 44 (2015): 13591–96. http://dx.doi.org/10.1073/pnas.1507274112.

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Hydrocarbons are ubiquitous in the ocean, where alkanes such as pentadecane and heptadecane can be found even in waters minimally polluted with crude oil. Populations of hydrocarbon-degrading bacteria, which are responsible for the turnover of these compounds, are also found throughout marine systems, including in unpolluted waters. These observations suggest the existence of an unknown and widespread source of hydrocarbons in the oceans. Here, we report that strains of the two most abundant marine cyanobacteria,ProchlorococcusandSynechococcus, produce and accumulate hydrocarbons, predominantl

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6

Alaidaroos, Bothaina A. "Advancing Eco-Sustainable Bioremediation for Hydrocarbon Contaminants: Challenges and Solutions." Processes 11, no. 10 (2023): 3036. http://dx.doi.org/10.3390/pr11103036.

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In an era of rising population density and industrialization, the environment confronts growing challenges. Soil, agricultural land, and water bodies are becoming increasingly polluted by petroleum waste and hydrocarbons. While hydrocarbons are naturally present in crude oil, refining processes compound the complexity and toxicity of hydrocarbons. This is particularly evident in polycyclic aromatic hydrocarbons (PAHs) found in the air and soil, known for their carcinogenic, mutagenic, and teratogenic properties. In response, biodegradation emerges as an eco-friendly, cost-effective solution, e

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ANDREEV, A. P., R. B. BITUEV, A. V. MESHCHERYAKOV, M. I. SAUTIEV, and D. V. FROLOV. "Investigation of hydrocarbon absorption by foam." Fire and Emergencies: prevention, elimination 2 (2024): 39–45. http://dx.doi.org/10.25257/fe.2024.2.39-45.

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Purpose. To explain the behavior of air-mechanical foam in contact with hydrocarbons, there are generally accepted ideas about the thermodynamic stability of asymmetric aqueous films. These concepts cannot be considered exhaustive, since they do not explain the phenomena of foam stabilization in contact with hydrocarbons. The reason for the stabilization of foam films is the formation of stable emulsions in them caused by mass transfer. The aim of the work is to investigate the phenomenon of mass transfer between the aqueous phase and hydrocarbons on the stability of foam in contact with hydro

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8

Bekturova, Assemgul, Zhannur Markhametova, and Zhaksylyk Masalimov. "Plasmids Role in Survival of Acinetobacter calcoaceticus A1 Exposed to UV-Radiation and Hydrocarbons." Advanced Materials Research 905 (April 2014): 151–55. http://dx.doi.org/10.4028/www.scientific.net/amr.905.151.

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The role of plasmids in hydrocarbon-degrading bacteriaAcinetobacter calcoaceticus A1survival to UV-radiation and hydrocarbons was studied. Natural plasmids-containingA. calcoaceticus A1showed high resistance to UV-radiation.A. calcoaceticus A1showed active growth under exposed to UV-radiation for up to 30 minutes. Combined effects of UV-radiation and petroleum hydrocarbons did not considerably reduce the growth of strains. It was shown a stimulating effect of UV-radiation on the growth curves of strains ofA. calcoaceticus A1. Constructed recombinant strain (E.coli XL blueRec) showed the abilit

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9

VOSMERIKOVA, L. N., A. A. VOSMERIKOV, YA E. BARBASHIN, and A. V. VOSMERIKOV. "CONVERSION OF LIGHT ALKANES C2-C4 INTO OLEFIN HYDROCARBONS OVER ZEOLITE-CONTAINING CATALYSTS." Chemistry for Sustainable Development 33, no. 2 (2025): 173–79. https://doi.org/10.15372/csd2025642.

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Results of studies on the conversion of gaseous hydrocarbon feedstock with different compositions into olefin hydrocarbons over zeolite-containing catalysts are presented. The results of catalyst testing indicate that zeolites modified with phosphorus and manganese exhibit high activity in the conversion of lower C2-C4 alkanes into olefin hydrocarbons. It has been determined that the P-containing zeolite catalyst has the highest dehydrogenating activity, and the Mn-containing zeolite catalyst is characterized by a higher overall activity. It is shown that significant conversion of the feedstoc

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10

Pang, Xiongqi, Zhenxue Jiang, Shengjie Zuo, and Ian Lerche. "Dynamics of Hydrocarbon Expulsion from Shale Source Rocks." Energy Exploration & Exploitation 23, no. 5 (2005): 333–55. http://dx.doi.org/10.1260/014459805775992735.

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Expulsion of hydrocarbons from a shale source rock can be divided in four stages. In the first stage, only a small amount of hydrocarbons can be expelled in water solution and by diffusion. Compaction and hydrocarbon concentration gradient are the major driving forces, whereas their corresponding hydrocarbon expulsion amounts make up 30% and 70% to the total, respectively. In the second stage, in addition to transport by water solution and by diffusion, source rocks expel a large quantity of gas in free phase. In the third stage, the most important feature is that source rocks expel oil as a s

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11

MERKISZ, Jerzy, and Stanisław RADZIMIRSKI. "The analysis of the methods of hydrocarbon emission measurement according to European vehicle emission legislation." Combustion Engines 136, no. 1 (2009): 76–89. http://dx.doi.org/10.19206/ce-117223.

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The paper discusses the measurement methods of methane hydrocarbons, non-methane hydrocarbons and total hydrocarbons set forth in the European emission regulations pertaining to M and N vehicle types and their engines. A model for the determining of the concentration of the said hydrocarbons and mathematical formulas have been derived. The concentration of the hydrocarbons determined as per the standards and the actual hydrocarbon concentration have been compared. Based on the above, changes have been proposed in the methodology set forth in the regulations.

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12

Lopez, Eric Sanchez, Temidayo Oluyomi Elufisan, Patricia Bustos, Claudia Paola Mendoza Charles, Alberto Mendoza-Herrera, and Xianwu Guo. "Complete Genome Report of a Hydrocarbon-Degrading Sphingobium yanoikuyae S72." Applied Sciences 12, no. 12 (2022): 6201. http://dx.doi.org/10.3390/app12126201.

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Sphingobium yanoikuyae S72 was isolated from the rhizosphere of sorghum plant in Mexico and we evaluated its survival and role in the degradation of some selected monoaromatic hydrocarbons and polycyclic aromatic hydrocarbons (PAHs) using minimal medium (Bushnell Hass medium (BH)) in which each of the hydrocarbons (naphthalene, phenanthrene, xylene, toluene, and biphenyl) served as sole carbon source. Gas column chromatography–mass spectrometry analysis was used to evaluate the effect of S72’s growth in the medium with the hydrocarbons. The genome of the S72 was sequenced to determine the gene

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13

Gargouri, Boutheina, Najla Mhiri, Fatma Karray, Fathi Aloui, and Sami Sayadi. "Isolation and Characterization of Hydrocarbon-Degrading Yeast Strains from Petroleum Contaminated Industrial Wastewater." BioMed Research International 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/929424.

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Two yeast strains are enriched and isolated from industrial refinery wastewater. These strains were observed for their ability to utilize several classes of petroleum hydrocarbons substrates, such asn-alkanes and aromatic hydrocarbons as a sole carbon source. Phylogenetic analysis based on the D1/D2 variable domain and the ITS-region sequences indicated that strains HC1 and HC4 were members of the generaCandidaandTrichosporon, respectively. The mechanism of hydrocarbon uptaking by yeast,Candida,andTrichosporonhas been studied by means of the kinetic analysis of hydrocarbons-degrading yeasts gr

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14

Parnell, John, and Paul Eakin. "The replacement of sandstones by uraniferous hydrocarbons: significance for petroleum migration." Mineralogical Magazine 51, no. 362 (1987): 505–15. http://dx.doi.org/10.1180/minmag.1987.051.362.05.

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AbstractHydrocarbons (bitumens sensu lato) in sandstones have been recorded in several instances to have partially replaced their host rock, including quartz grains. Many replacive hydrocarbons are uranium-rich: associated non-uraniferous hydrocarbons are not replacive. Uranium is transported as carbonate complexes, which may be decomposed by organic acids to yield UO22+ ions and CO2. The UO22+ will be absorbed onto hydrocarbons before reduction to a mineral phase, generally uraninite; and the CO2 may be aggressive towards the silicate grains of the host sandstone. Accretionary nodules of repl

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15

Mansurov, Z., Y. O. Doszhanov, Y. K. Ongarbaev, N. Sh Akimbekov, and A. A. Zhubanova. "The Evaluation of Process of Bioremediation of Oil-Polluted Soils by Different Strains of Pseudomonas." Advanced Materials Research 647 (January 2013): 363–67. http://dx.doi.org/10.4028/www.scientific.net/amr.647.363.

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The determination of content hydrocarbon of diesel fuels and individual hydrocarbons in oil-polluted soil before and after bioremediation by oil-oxidational microorganisms was carried out by method of chromato-mass-spectrometry. It has been shown that changes in composition hydrocarbons of diesel fuels and individual hydrocarbons in soil observe during growth of microorganisms on this soil.

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16

Obilor, M.C.I, S.A Ngah, and T. J. K. Ideriah. "Levels of Polycyclic Aromatic Hydrocarbons and Total Hydrocarbon Contents in Boreholes Water from Some Communities in Obio-Akpor Local Government Area of Rivers State, Nigeria." Levels of Polycyclic Aromatic Hydrocarbons and Total Hydrocarbon Contents in Boreholes Water from Some Communities in Obio-Akpor Local Government Area of Rivers State, Nigeria 9, no. 1 (2024): 12. https://doi.org/10.5281/zenodo.10560748.

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The study focused primarily on the assessment of Polycyclic Aromatic Hydrocarbons (PAHs) and Total Hydrocarbon content of groundwater in Obio-Akpor. Groundwater (boreholes) samples were randomly collected from 21 sampling locations in six different communities and Rivers State University in Obio-Akpor Local Government Area of Rivers State. Standard analytical techniques were employed in the investigation. The study showed that in all the 21 stations, Polycyclic Aromatic Hydrocarbons (PAHs) had concentrations below the SON (0.007ppm) limit. The study recommended regular monitoring of the water

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17

Doszhanov, Ye O., Z. A. Mansurov, Ye K. Ongarbaev, Ye Tileuberdi, and A. A. Zhubanova. "The Study of Biodegradation of Diesel Fuels by Different Strains of Pseudomonas." Applied Mechanics and Materials 467 (December 2013): 12–15. http://dx.doi.org/10.4028/www.scientific.net/amm.467.12.

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The analysis of diesel fuels hydrocarbon composition before and after biodegradation is carried out by the methods of photocolorimetry. It was determinated, that the hydrocarbon composition of the diesel fuels is changed on influence of microorganisms. It has been shown that changes in composition hydrocarbons of diesel fuels and individual hydrocarbons in soil observe during growth of microorganisms on this soil.

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18

Malysheva, Anna. "Calculation of a two-phase system of a liquified hydrocarbon gas." E3S Web of Conferences 135 (2019): 04003. http://dx.doi.org/10.1051/e3sconf/201913504003.

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Liquefied hydrocarbon gases are a mixture of chemical compounds, consisting mainly of hydrogen and carbon with different molecular structures. The main components of liquefied hydrocarbon gases are propane and butane, containing lighter hydrocarbons (methane and ethane) and heavier ones (pentane) in the form of impurities. All of these components are saturated hydrocarbons. The composition of liquefied hydrocarbon gases can also include unsaturated hydrocarbons: ethylene, propylene, butylene. Butane-butylenes may be present as isomeric compounds (isobutane and isobutylene). When designing and

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19

Mahmud, Tasiu, Ibrahim Alhaji Sabo, Zakari Nuhu Lambu, Dauda Danlami, and Adamu Abdullahi Shehu. "Hydrocarbon Degradation Potentials of Fungi: A Review." Journal of Environmental Bioremediation and Toxicology 5, no. 1 (2022): 50–56. http://dx.doi.org/10.54987/jebat.v5i1.681.

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One of the serious problems affecting the environment nowadays is petroleum hydrocarbon contaminations resulting from the activities in the oil and gas sector, these include: oil-spill, tank leakage, lubrication, petroleum exploitation, transportation, and services. Various techniques including mechanical and chemical methods have been employed for the bioremediation and degradation of hydrocarbons pollutants from the environments, however, some of these methods are generally expensive and may have detrimental effects on the environment, hence bioremediation is the alternative solution to hydr

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20

Meng, Qingqiang, Jiajun Jing, Jingzhou Li, et al. "New exploration strategy in igneous petroliferous basins – Enlightenment from simulation experiments." Energy Exploration & Exploitation 36, no. 4 (2018): 971–85. http://dx.doi.org/10.1177/0144598718758338.

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There are two kinds of relationships between magmatism and the generation of hydrocarbons from source rocks in petroliferous basins, namely: (1) simultaneous magmatism and hydrocarbon generation, and (2) magmatism that occurs after hydrocarbon generation. Although the influence of magmatism on hydrocarbon source rocks has been extensively studied, there has not been a systematic comparison between these two relationships and their influences on hydrocarbon generation. Here, we present an overview of the influence of magmatism on hydrocarbon generation based on the results of simulation experim

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21

Truskewycz, Adam, Taylor D. Gundry, Leadin S. Khudur, et al. "Petroleum Hydrocarbon Contamination in Terrestrial Ecosystems—Fate and Microbial Responses." Molecules 24, no. 18 (2019): 3400. http://dx.doi.org/10.3390/molecules24183400.

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Petroleum hydrocarbons represent the most frequent environmental contaminant. The introduction of petroleum hydrocarbons into a pristine environment immediately changes the nature of that environment, resulting in reduced ecosystem functionality. Natural attenuation represents the single, most important biological process which removes petroleum hydrocarbons from the environment. It is a process where microorganisms present at the site degrade the organic contaminants without the input of external bioremediation enhancers (i.e., electron donors, electron acceptors, other microorganisms or nutr

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Dunmore, R. E., J. R. Hopkins, R. T. Lidster, et al. "Diesel-related hydrocarbons can dominate gas phase reactive carbon in megacities." Atmospheric Chemistry and Physics Discussions 15, no. 6 (2015): 9541–71. http://dx.doi.org/10.5194/acpd-15-9541-2015.

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Abstract. Hydrocarbons are key precursors to two priority air pollutants, ozone and particulate matter. Those with two to seven carbons have historically been straightforward to observe and have been successfully reduced in many developed cities through air quality policy interventions. Longer chain hydrocarbons released from diesel vehicles are not considered explicitly as part of air quality strategies and there are few direct measurements of their gaseous abundance in the atmosphere. This study describes the chemically comprehensive and continuous measurements of organic compounds in a deve

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Dunmore, R. E., J. R. Hopkins, R. T. Lidster, et al. "Diesel-related hydrocarbons can dominate gas phase reactive carbon in megacities." Atmospheric Chemistry and Physics 15, no. 17 (2015): 9983–96. http://dx.doi.org/10.5194/acp-15-9983-2015.

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Abstract. Hydrocarbons are key precursors to two priority air pollutants, ozone and particulate matter. Those with two to seven carbons have historically been straightforward to observe and have been successfully reduced in many developed cities through air quality policy interventions. Longer chain hydrocarbons released from diesel vehicles are not considered explicitly as part of air quality strategies and there are few direct measurements of their gaseous abundance in the atmosphere. This study describes the chemically comprehensive and continuous measurements of organic compounds in a deve

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Gurov, Yuri P., Evgeny О. Zemlianskii, Andrey G. Mozyrev, and Slavik G. Agaev. "PARAMETERS CRYSTALLIZATION PROCESSES AND SOLID PETROLEUM HYDROCARBONS DISSOLUTION." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no. 6 (2020): 90–94. http://dx.doi.org/10.6060/ivkkt.20206306.6181.

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In the proposed work, the experimental data on the processes of crystallization and different nature waxy hydrocarbons recrystallization in hydrocarbon solvents have been compared. T-1 technical paraffin (GOST 23683-89) with the melting point of 54 °С and ceresin-80 (GOST 2488-79) with the dropping temperature of 80 °C have been used. РТ-1 kerosene (GOST 10227-86) and de-waxed oil of fraction 420-490 °С have been used as hydrocarbon solvents. The experimental data on crystallization and recrystallization processes of paraffin wax with a melting temperature of 54 ºC and ceresin with a dropping

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Pang, Xiongqi, Ian Lerche, Haiyan Zhou, and Zhengxue Jiang. "Hydrocarbon Accumulation Control by Predominant Migration Pathways." Energy Exploration & Exploitation 21, no. 3 (2003): 167–86. http://dx.doi.org/10.1260/014459803769520034.

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Geological analysis and physical analogy experiments indicate that, under geological conditions, hydrocarbon tends to migrate along a path of least resistance and attempt to follow the largest buoyancy component. There are four generalized modes of possible transport. First, hydrocarbons tends to migrate along the pathways with high porosity and permeability, and with a large grade difference relative to surrounding rocks (grade difference predominance); second, hydrocarbons tends to migrate in the opposite direction in overlying formations to the nadir of the sedimentation centre (divided syn

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Irene, Desy Shintya, I. Gusti Ngurah Putra Dirgayusa, and Ni Luh Putu Ria Puspitha. "Identifikasi Bakteri yang Berpotensi Mendegradasi Hidrokarbon dari Substrat Mangrove dengan Tekstur Berpasir, Berlumpur, dan Tanah Liat." Journal of Marine and Aquatic Sciences 6, no. 2 (2020): 175. http://dx.doi.org/10.24843/jmas.2020.v06.i02.p4.

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Hydrocarbon compounds are commonly found in petroleum and gas, plastics, paraffins, and bitumen. Although hydrocarbons are the constituent compounds of the materials used by humans, some hydrocarbon compounds have adverse effects on the environment and humans. One alternative to solve this problem is by using Mangrove substrate in Ngurah Rai Forest Park, Bali which is the habitat of several species of bacteria that interfere with degrading hydrocarbons. This study aims to identify the bacteria that interfere with hydroxon, through macroscopic observation, microscopic and biochemical tests. The

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Tan, Yew Ai, and Ainte Kuntom. "Hydrocarbons m Crude Palm Kernel Oil." Journal of AOAC INTERNATIONAL 77, no. 1 (1994): 67–73. http://dx.doi.org/10.1093/jaoac/77.1.67.

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Abstract The sources of hydrocarbons in crude palm kernel oil were investigated by a series of laboratory-controlled oil extractions of kernels of varying quality. Site examinations of palm kernel-crushing plants were also conducted to determine possible sources of hydrocarbon contamination of palm kernels throughout the process of kernel extraction. Parallel to these studies, a random survey of crude palm kernel oil (CPKO) produced by different kernel crushers was also carried out to determine the range of hydrocarbon concentrations in locally produced CPKO. This study showed that hydrocarbon

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Ohwovorione, Lucky, and Onoriode Emoyan. "CONCENTRATIONS AND ASSOCIATED RISK OF SELECTED ALIPHATIC HYDROCARBONS IN SEDIMENTS FROM RIVER ETHIOPE, SOUTHERN NIGERIA." Nigerian Journal of Science and Environment 22, no. 1 (2024): 194–207. http://dx.doi.org/10.61448/njse2212415.

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The contamination of aquatic ecosystems by hydrocarbon compounds poses severe environmental and human health concerns. Hence this study aimed to investigate the concentrations and associated risk of selected aliphatic hydrocarbons in sediments from the River Ethiope, an important water resource in Nigeria. A comprehensive sampling was conducted, collecting sediment samples at various locations (Umuaja, Obinoba, Abraka, Eku, Okpara, Aghalokpe, and Sapele) along the river. The samples were analyzed using gas chromatography (GC) to quantify the concentrations of hydrocarbons, with a specific focu

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Malina, I., K. Malins, M. Strods-Vavilovs, and V. Uleiskis. "Renewable Hydrocarbon Production via Rapeseed Oil Hydrotreatment Over Palladium Catalysts." IOP Conference Series: Earth and Environmental Science 897, no. 1 (2021): 012012. http://dx.doi.org/10.1088/1755-1315/897/1/012012.

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Abstract The effect of SiO2-Al2O3 (Pd5%/SA), activated carbon (Pd5%/C) and Al2O3 (Pd5%/A) supported palladium (5%) catalysts on renewable hydrocarbon synthesis via rapeseed oil hydrotreatment was investigated. The hydrotreatment experiments were carried out in solvent free medium under initial H2 pressure 100 bar and at 340 °C temperature for 120 min using catalyst amount 5%. Gas chromatography-mass spectrometry (GC/MS) analysis were used for estimation of hydrocarbon content in the obtained samples. Pd5%/SA catalyst provided complete conversion of rapeseed oil into marketable liquid renewable

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Wang, Zhendi, and Mervin F. Fingas. "Identification of the Source(s) of Unknown Spilled Oils." International Oil Spill Conference Proceedings 1999, no. 1 (1999): 211–18. http://dx.doi.org/10.7901/2169-3358-1999-1-211.

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ABSTRACT The ability to unambiguously identify spilled oils and petroleum products in complex contaminated environmental samples and to link them to the known sources is extremely important in settling questions of environmental impacts and liability. This paper will briefly review advanced chemical fingerprinting and data interpreting techniques used to identify sources of spilled oils. The chemical fingerprinting techniques discussed include pattern recognition evaluation of target petroleum hydrocarbon distributions; determination of major oil components and hydrocarbon groups; determinatio

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Thomas, Melissa L., and Leigh W. Simmons. "Short-term phenotypic plasticity in long-chain cuticular hydrocarbons." Proceedings of the Royal Society B: Biological Sciences 278, no. 1721 (2011): 3123–28. http://dx.doi.org/10.1098/rspb.2011.0159.

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Cuticular hydrocarbons provide arthropods with the chemical equivalent of the visually extravagant plumage of birds. Their long chain length, together with the number and variety of positions in which methyl branches and double bonds occur, provide cuticular hydrocarbons with an extraordinary level of information content. Here, we demonstrate phenotypic plasticity in an individual's cuticular hydrocarbon profile. Using solid-phase microextraction, a chemical technique that enables multiple sampling of the same individual, we monitor short-term changes in cuticular hydrocarbon profiles of indiv

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Yusne, Nurul Izzati Liyana, and Wan Razarinah Wan Abdul Razak. "Ability of Pseudomonas sp. and Aspergillus sp. on the Bioremediation of Petroleum Hydrocarbons Contaminated Water: A Review." Bioresources and Environment 1, no. 3 (2023): 76–89. https://doi.org/10.24191/bioenv.v1i3.46.

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In the year 2022, an estimated 41,000 tonnes of petroleum hydrocarbon spills were officially reported, underscoring the urgent environmental concern linked with the contamination of water bodies. This comprehensive analysis highlights the notable species engaged in the process of bioremediation for petroleum hydrocarbons within marine environments, specifically focusing on the Pseudomonas and Aspergillus species. Petroleum hydrocarbons pose multifaceted toxicological hazards to both human and animal well-being. The objective of this study is to review the distinctive attributes of Pseudomonas

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Nadjafova, S. I., and N. M. Ismaylov. "Screening of Active Oil Destructors from Various Zones of Urban Soils (on the Example of Baku)." Агрохимия, no. 6 (August 15, 2024): 66–70. http://dx.doi.org/10.31857/s0002188124060098.

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Active cultures of hydrocarbon-decomposing microorganisms from soils of various functional zones of Baku were screened. It was shown that 15 cultures of hydrocarbon-decomposing microorganisms isolated as a result of continuous screening belonged to the genera Rhodococcus, Pseudomonas, Bacillus, Mycobacterium, Actinomyces, Arthrobacter, Micrococcus and were able to use various hydrocarbons (crude oil, paraffin and aromatic hydrocarbons and petroleum products) as the only source of carbon and energy. According to the degree of decomposition, petroleum hydrocarbons were ranked in the series: a mi

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Ponomareva, Anna L., Alena I. Eskova, Renat B. Shakirov, Nadezhda S. Syrbu, Aleksey A. Legkodimov, and Roman A. Grigorov. "Groups of Geomicrobiological Indicators Are Spread across Gas-Hydrate and Non-Gas-Hydrate Areas in the Northern Part of the Sea of Japan." Biology 11, no. 12 (2022): 1802. http://dx.doi.org/10.3390/biology11121802.

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The bioindication of oil and gas fields is a field of geomicrobiology that is mainly devoted to the detection of hydrocarbon-oxidizing microbial indicator species or functional genes in total DNA. However, it appears promising to use the physiological properties of microorganisms detection deposit type of hydrocarbons, in particular their ability to oxidize hydrocarbons under aerobic and anaerobic conditions. In this study, the most promising approach in this area was the method used for assessing the anaerobic degradation of hydrocarbons. When comparing molecular genetics and cultured methods

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35

Parinos, C., A. Gogou, I. Bouloubassi, et al. "Occurrence, sources and transport pathways of natural and anthropogenic hydrocarbons in deep-sea sediments of the eastern Mediterranean Sea." Biogeosciences 10, no. 9 (2013): 6069–89. http://dx.doi.org/10.5194/bg-10-6069-2013.

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Abstract. Surface sediments collected from deep basins (1018–4087 m depth) of the eastern Mediterranean Sea (Ionian Sea, southern Aegean Sea and northwestern Levantine Sea) were analyzed for aliphatic and polycyclic aromatic hydrocarbons as tracers of natural and anthropogenic inputs. Concentrations of total aliphatic hydrocarbons, n-alkanes and the unresolved complex mixture (UCM) of aliphatic hydrocarbons varied significantly, ranging from 1.34 to 49.2 μg g−1, 145 to 4810 ng g−1 and 0.73 to 36.7 μg g−1, respectively, while concentrations of total polycyclic aromatic hydrocarbons (PAHs) range

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36

Tian, Shansi, Zhentao Dong, Bo Liu, et al. "Characteristics of Gaseous/Liquid Hydrocarbon Adsorption Based on Numerical Simulation and Experimental Testing." Molecules 27, no. 14 (2022): 4590. http://dx.doi.org/10.3390/molecules27144590.

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Abstract (sommario):

Hydrocarbon vapor adsorption experiments (HVAs) are one of the most prevalent methods used to evaluate the proportion of adsorbed state oil, critical in understanding the recoverable resources of shale oil. HVAs have some limitations, which cannot be directly used to evaluate the proportion of adsorbed state oil. The proportion of adsorbed state oil from HVA is always smaller than that in shale oil reservoirs, which is caused by the difference in adsorption characteristics of liquid and gaseous hydrocarbons. The results of HVA need to be corrected. In this paper, HVA was conducted with kaolini

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37

Abdulhussein, Hassan Muslem, Sahira Nsayef Muslim, and Wafaa Hassan Muslem. "Bioremediation of petroleum hydrocarbon contaminated soil by xylanase enzyme." Advancements in Life Sciences 12, no. 1 (2025): 255. https://doi.org/10.62940/als.v12i1.3125.

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Abstract (sommario):

Background: The global spread of petrochemical and petroleum contamination, such as petroleum hydrocarbons (PHCs), is currently a significant environmental risk. The global biosphere is badly harmed by these pollutants, and biodiversity is significantly reduced. This study was to screen for xylanase synthesis in Pseudomonas spp. and evaluate its efficiency as a bioremediator in removal of hydrocarbons from hydrocarbon-contaminated soil.Methods: Soil samples from Al-Dora oil plant Baghdad, Iraq, were cultured in nutritional agar medium containing 0.5% of corn cob xylan for determination of xyla

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38

Taylor, Nicole M., Courtney R. A. Toth, Victoria Collins, Paolo Mussone, and Lisa M. Gieg. "The Effect of an Adsorbent Matrix on Recovery of Microorganisms from Hydrocarbon-Contaminated Groundwater." Microorganisms 9, no. 1 (2021): 90. http://dx.doi.org/10.3390/microorganisms9010090.

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Abstract (sommario):

The microbial degradation of recalcitrant hydrocarbons is an important process that can contribute to the remediation of oil and gas-contaminated environments. Due to the complex structure of subsurface terrestrial environments, it is important to identify the microbial communities that may be contributing to biodegradation processes, along with their abilities to metabolize different hydrocarbons in situ. In this study, a variety of adsorbent materials were assessed for their ability to trap both hydrocarbons and microorganisms in contaminated groundwater. Of the materials tested, a porous po

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39

Doley, Ruby, and Manoj Barthakur. "Biotransformation of aromatic hydrocarbon: Naphthalene to Aliphatic Hydrocarbons through Staphylococcus pasteuri RD2." Annals of Plant Sciences 7, no. 5 (2018): 2247. http://dx.doi.org/10.21746/aps.2018.7.5.7.

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Abstract (sommario):

Aromatic hydrocarbons like naphthalene are common environmental pollutants of petrochemical waste. Microorganisms have been exploited since long back to clean up such pollutants by converting them in to either non- toxic or less toxic aromatic or aliphatic compounds. A bacterial strain have been isolated from oil sludge of Guwahati Refinery, Assam and was identified as Staphylococcus pasteuri RD2 (NCBI accession number MG680735) through 16srDNA sequence analysis and molecular phylogeny. The bacterial strain transforms Naphthalene, a common hazardous aromatic hydrocarbon found in petrochemical

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40

Fan, Li, Xianhe Gong, Quanwei Lv, Denghui Bin, and Li’Ao Wang. "Construction of Shale Gas Oil-Based Drilling Cuttings Degrading Bacterial Consortium and Their Degradation Characteristics." Microorganisms 12, no. 2 (2024): 318. http://dx.doi.org/10.3390/microorganisms12020318.

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Abstract (sommario):

Oil-based drilling cuttings (OBDCs) contain petroleum hydrocarbons with complex compositions and high concentrations, which have highly carcinogenic, teratogenic, and mutagenic properties. In this study, three highly efficient petroleum hydrocarbon-degrading bacteria were screened from OBDCs of different shale gas wells in Chongqing, China, and identified as Rhodococcus sp. and Dietzia sp. Because of their ability to degrade hydrocarbons of various chain lengths, a new method was proposed for degrading petroleum hydrocarbons in shale gas OBDCs by combining different bacterial species. Results

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41

YEN, T. F., J. F. KUO, and G. V. CHILINGARIAN. "Note on Hydrocarbon 2. Naphthenic Hydrocarbons." Energy Sources 9, no. 2 (1987): 125–32. http://dx.doi.org/10.1080/00908318708908689.

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42

Nemirovskaya, I. A., V. D. Oneginа, A. P. Lisitzin, and B. V. Konovalov. "Origin of hydrocarbons in suspended matter and bottom sediments near the Crimean peninsula." Доклады Академии наук 484, no. 5 (2019): 600–604. http://dx.doi.org/10.31857/s0869-56524845600-604.

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Abstract (sommario):

It was established that the content of hydrocarbons in the surface waters of the Feodosia Gulf fluctuated were varied a wide range (11–179 μg/l), and exceeded the MPC values for petroleum hydrocarbons in individual samples. The highest concentrations were observed in 2016. The composition of alkanes suggested their mixed (autochthonous and allochthonous) origin. The weathered petroleum hydrocarbons have been identified only in a few cases. In bottom sediments, the concentrations of hydrocarbons depended on their grain size distribution, and terrigenous alkanes were dominated in their compositi

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43

Yin, Xiafei, Xin Wang, Minjun Qiu, Wei Shao, Min Ai, and Guobin Liang. "Two types of microorganisms isolated from petroleum hydrocarbon pollutants: Degradation characteristics and metabolic pathways analysis of petroleum hydrocarbons." PLOS ONE 19, no. 11 (2024): e0312416. http://dx.doi.org/10.1371/journal.pone.0312416.

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Abstract (sommario):

The petroleum hydrocarbons in seawater have been worldwide concern contaminants. Biological method, with the advantages of low cost, minimal environmental impact, and no secondary pollution, is a promising method for petroleum hydrocarbon treatment. In this study, two strains, identified as Stenotrophomonas acidaminiphila and Ochrobactrum, were demonstrated to possess the ability to degrade petroleum hydrocarbons. The mixed culture composed of Stenotrophomonas acidaminiphila and Ochrobactrum at a 2:1 ratio was able to achieve 79.41% degradation of the total petroleum hydrocarbons after 5 days.

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44

Liang, Xiaofei, Qinhong Hu, Xiugang Pu, et al. "Multifractal Methods in Characterizing Pore Structure Heterogeneity During Hydrous Pyrolysis of Lacustrine Shale." Fractal and Fractional 8, no. 11 (2024): 657. http://dx.doi.org/10.3390/fractalfract8110657.

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Abstract (sommario):

By using gas physisorption and multifractal theory, this study analyzes pore structure heterogeneity and influencing factors during thermal maturation of naturally immature but artificially matured shale from the Kongdian Formation after being subjected to hydrous pyrolysis from 250 °C to 425 °C. As thermal maturity increases, the transformation of organic matter, generation, retention, and expulsion of hydrocarbons, and formation of various pore types, lead to changes in pore structure heterogeneity. The entire process is divided into three stages: bitumen generation stage (250–300 °C), oil g

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45

Vosmerikova, Ludmila N., Anton A. Vosmerikov, and Alexander V. Vosmerikov. "Study of the features of conversion of various gaseous hydrocarbon raw materials into olefin hydrocarbons on a Mg-containing zeolite catalyst." Vestnik Тomskogo gosudarstvennogo universiteta. Khimiya, no. 36 (2024): 212–17. https://doi.org/10.17223/24135542/36/17.

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Abstract (sommario):

The effect of the composition of the initial gaseous raw material on the yield and selectivity of olefin hydrocarbon formation in the process of converting C2-C4 alkanes into olefin hydrocarbons on a Mg-containing zeolite catalyst was studied. High activity and selectivity of this catalyst in the process under study were found. It was found that on the Mg-containing zeolite catalyst the yield of olefin hydrocarbons does not depend on the composition of the gaseous hydrocarbon raw material used.

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46

Conway, Lewis J., and Andreas Hermann. "High Pressure Hydrocarbons Revisited: From van der Waals Compounds to Diamond." Geosciences 9, no. 5 (2019): 227. http://dx.doi.org/10.3390/geosciences9050227.

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Abstract (sommario):

Methane and other hydrocarbons are major components of the mantle regions of icy planets. Several recent computational studies have investigated the high-pressure behaviour of specific hydrocarbons. To develop a global picture of hydrocarbon stability, to identify relevant decomposition reactions, and probe eventual formation of diamond, a complete study of all hydrocarbons is needed. Using density functional theory calculations we survey here all known C-H crystal structures augmented by targeted crystal structure searches to build hydrocarbon phase diagrams in the ground state and at elevate

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47

Pattanayak, Rojalin, Geetanjali Mishra, Chandan Singh Chanotiya, Prasant Kumar Rout, Chandra Sekhar Mohanty, and Omkar. "Semiochemical profile of four aphidophagous Indian Coccinellidae (Coleoptera)." Canadian Entomologist 148, no. 2 (2015): 171–86. http://dx.doi.org/10.4039/tce.2015.45.

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Abstract (sommario):

AbstractThe emitted aliphatic hydrocarbon profile of four Indian Coccinellidae (Coleoptera), Coccinella septempunctata (Linnaeus) (C7), Coccinella transversalis Fabricius (Ct), Menochilus sexmaculatus (Fabricius) (Ms), and Propylea dissecta (Mulsant) (Pd) has been investigated by simple solvent-less headspace solid-phase microextraction (HS-SPME) technique coupled with gas chromatography and mass spectroscopy (GC-MS). Identified volatile and non-volatile compounds were confirmed by running corresponding standards and comparing with the National Institute of Standards and Technology library. Am

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48

MIKHAILOVA, A. N., SH A. SAID, M. A. SUWEID, et al. "HYDROTHERMAL CONVERSION OF ORGANIC MATTER OF LOW-PERMEABILITY DOMANIC SHALE ROCK INTO GASEOUS AND LIQUID HYDROCARBONS UNDER A CARBON DIOXIDE ENVIRONMENT." Herald of Technological University 27, no. 7 (2024): 86–92. https://doi.org/10.55421/1998-7072_2024_27_7_86.

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Abstract (sommario):

A study was conducted to determine whether temperature influences the nature of organic matter transformation in low-permeable rock of the Mendym deposits Upper Devonian of the Tavel oil field (Tatarstan). An experiment was conducted at 250°C, 300°C, and 350°C in a carbon dioxide environment with a 1:1 water to rock ratio and an exposure time of 24 hours in a carbon dioxide environment. The degree of kerogen conversion in the rock was determined, changes in the composition of the formed gases, group and hydrocarbon composition were assessed extracts (composed of saturated and aromatic hydrocar

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49

S., Mikhailov,, Brovko, R., Lakina, N., and Doluda, V. "Mixed Structure MFI-MORD Zeolite Deactivation in Micro Structured Fluid Conditions in Methanol to Hydrocarbons Transformation Reaction Study." Bulletin of Science and Practice, no. 1 (January 15, 2023): 10–16. http://dx.doi.org/10.33619/2414-2948/86/01.

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Abstract (sommario):

Microstructured reaction systems are attracting considerable attention from both the scientific and industrial communities due to their high efficiency, the ability to precisely control the technological processes, and the ability scale up processes. One of the positive effects of using microstructured reaction systems is a decrease in the diffusion coefficient, which in turn has a positive effect on the transfer rates of reactants and reaction products. This should lead to an increase in the reaction rate and a decrease in the deactivation of catalytic systems, if they are used. The article p

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50

Qu, Yiqian, Siqi Ouyang, Jianwen Gao, et al. "Pore Space Characteristics and Migration Changes in Hydrocarbons in Shale Reservoir." Fractal and Fractional 8, no. 10 (2024): 588. http://dx.doi.org/10.3390/fractalfract8100588.

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Abstract (sommario):

The pore structure and mineral characteristics affect the accumulation and migration of hydrocarbons in shale, which determines the production capacity of shale oil. In this study, shale samples from the Chang 7 member of the Ordos Basin in China were selected to investigate the pore space characteristics, the effect of hydrocarbon accumulation on pore heterogeneity, and the hydrocarbon migration changes based on fractal theory, and a series of experiments were conducted involving X-ray diffraction (XRD), total organic carbon (TOC), Soxhlet extraction, and low-temperature nitrogen (N2) and car

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