Academic literature on the topic 'Phenols'

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Journal articles on the topic "Phenols"

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Kochana, Jolanta, Juliusz Adamski, and Andrzej Parczewski. "A Critical View on the Phenol Index as a Measure of Phenol Compounds Content in Waters. Application of a Biosensor." Ecological Chemistry and Engineering S 19, no. 3 (2012): 383–91. http://dx.doi.org/10.2478/v10216-011-0028-5.

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A Critical View on the Phenol Index as a Measure of Phenol Compounds Content in Waters. Application of a BiosensorPhenol index is considered as an important indicator of water purity and quality. Usually phenol index is determined by a spectrophotometric method the calibration being based on phenol standards. Unfortunately, the absorptivities of different phenols compounds differ from each other. This leads to significant uncertainty concerning content of phenols in water. It is shown that the same shortage of the phenol index appears also if it is determined using an amperometric biosensor ba
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Lu, C. J., and S. J. Chen. "The Effects of the Secondary Carbon Source on the Biodegradation of Chlorinated Phenols in Biofilm Reactors." Water Science and Technology 26, no. 9-11 (1992): 2113–16. http://dx.doi.org/10.2166/wst.1992.0674.

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The effects of the presence of a secondary carbon source on the biodegradation of chlorinated phenols were studied with column biofilm reactors. The biodegradability of chlorinated phenols was studied with a series of batch reactors. The biodegradability of chlorinated phenols was to follow the order of phenol > 2,4-dichlorophenol > 4-chIorophenol > 2,4,6-trichlorophenol > 2-chlorophenol > 3-chloro-phenol. The presence of a relatively more biodegradable but higher chlorinated phenol, such as 2,4,6-trichlorophenol, enhanced the biodégradation of a less chlorin
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Helal, Ahmed, Stephane Desobry, Sylvie Banon, and Sherif M. Shamsia. "Antioxidant activity and bioaccessibility of phenols-enriched edible casein/caseinate coatings during in vitro digestion." Journal of Dairy Research 82, no. 1 (2014): 56–63. http://dx.doi.org/10.1017/s0022029914000557.

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Active films were developed for food coating applications. Entrapped phenol susceptibility to digestion was studied. Sodium caseinate (Na-CN) coatings were formulated with 0, 10, 20% Casein (CN) incorporating selected phenols as model antioxidants. This study investigated phenol/CN/Na-CN interactions, in vitro bioaccessibility of phenols and CN role in phenols retention during in vitro gastric and pancreatic digestion. The antioxidant activity of catechin (CAT), rutin (RUT), chlorogenic acid (CHL), gallic acid (GAL), and tannic acid (TA) in coatings varied with the phenolic compound type and C
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Sarma, G. V. S., P. Bala Bharathi, J. V. S. Murty, G. M. J. Raju, K. V. Ramesh, and C. Bhaskara Sarma. "Improvements in Recovery Efficiencies of Phenols from Phenol Fraction Using Two-Stage Alkali Treatment." TECNICA ITALIANA-Italian Journal of Engineering Science 65, no. 2-4 (2021): 442–45. http://dx.doi.org/10.18280/ti-ijes.652-443.

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Experiments were carried out for the recovery of phenols from phenol fraction procured from tar distillation plant of Visakhapatnam steel plant by two stage alkali treatment, to study the effect of two-stage alkali treatment on the yield of phenols from phenol fraction. The results of the present investigation showed that two-stage alkali wash gives better yields of phenols compared to single stage alkali wash of the same phenol fraction with the same strength of alkali solution (NaOH). Also it is shown that maximum yield of phenols could be obtained with 35% strength of alkali. In the first s
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Tatsumi, K., H. Ichikawa, and S. Wada. "Dephenolization from aqueous solution by treatment with peroxidase and a coagulant." Water Science and Technology 30, no. 9 (1994): 79–86. http://dx.doi.org/10.2166/wst.1994.0448.

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To develop a new enzymatic method for removal of phenols from wastewater, the reaction of phenols with horseradish peroxidase was investigated in the presence or absence of a coagulant. Phenols are effectively removed by treatment with peroxidase and a cationic polymer coagulant. The coagulant precipitated enzymatic products of phenol, and reduced the inactivation of peroxidase caused by reaction of products from phenol with the enzyme. This stabilization of peroxidase lessened the amount of enzyme required for phenol removal. Reaction of the coagulant with products from phenol resulted in a l
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Arvin, Erik, Bjørn K. Jensen, and Anders Torp Gundersen. "Biodegradation Kinetics of Phenols in an Aerobic Biofilm at Low Concentrations." Water Science and Technology 23, no. 7-9 (1991): 1375–84. http://dx.doi.org/10.2166/wst.1991.0590.

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Aerobic biodegradation of the phenols: phenol, 2-methylphenol, 4-methylphenol, 2,4-dimethylphenol, 3,5-dimethylphenol and 2,4,6-trimethylphenol was studied in a biofilm reactor to establish kinetic constants under conditions where the phenols were the sole carbon sources. Phenol concentrations were very low, in the µg/l concentration range. 2,4,6-trimethylphenol was not degraded. The degradation of the other phenols was 1'st order at concentrations in the bulk phase below 20-50 µg/l. Zero order reaction seemed to govern the reaction above 200 µg/l. The l'st order rate constants are 3-30 times
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du Plessis, Heinrich W., Justin W. Hoff, Lucky Mokwena, Marieta van der Rijst, and Neil P. Jolly. "Impact of Yeast Selection on Volatile Phenol Levels of Wines Produced from Smoked-Exposed Juice." Fermentation 7, no. 4 (2021): 240. http://dx.doi.org/10.3390/fermentation7040240.

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Grapes exposed to smoke can result in wines that have unacceptable high levels of volatile phenols. High volatile phenols levels have a negative impact on wine quality. This study aimed to determine the levels of volatile phenols in wines produced from smoke-exposed juice by a selection of commercial wine yeasts and to determine if yeast selection affected the perception of smokiness in wine. Commercial white and red wine yeasts were screened for the production of volatile phenols in smoke-exposed Chenin Blanc and Merlot juice. Volatile phenol levels were determined by GC-MS/MS and wines were
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Ezerskis, Z., and Z. Jusys. "Oxidation of chlorophenols on Pt electrode in alkaline solution studied by cyclic voltammetry, galvanostatic electrolysis, and gas chromatography­mass spectrometry." Pure and Applied Chemistry 73, no. 12 (2001): 1929–40. http://dx.doi.org/10.1351/pac200173121929.

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Potentiodynamic investigations on a platinum electrode show that oxidation of phenol, monochlorophenols, dichlorophenols, 2,3,6-, 2,4,5-, 2,4,6-trichlorophenols, and pentachlorophenol in 1 M NaOH solution, containing 1 mM of phenols, proceeds in the potential region of Pt oxide formation. The oxidation rate of phenols decreases with the increase in the number of chlorine atoms in the benzene ring in the row: phenol > monochlorophenols > dichlorophenols > trichlorophenols > pentachlorophenol. The electrochemical stability of phenols, as studied using a cyclic voltammetry, depends on
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Nádudvari, Ádám, Monika J. Fabiańska, and Magdalena Misz-Kennan. "Distribution of phenols related to self-heating and water washing on coal-waste dumps and in coaly material from the Bierawka river (Poland)." Mineralogia 46, no. 1-2 (2015): 29–40. http://dx.doi.org/10.1515/mipo-2016-0005.

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AbstractSeveral types of coal waste (freshly-dumped waste, self-heated waste and waste eroded by rain water), river sediments and river water were sampled. The aim was to identify the types of phenols present on the dumps together with their relative abundances. Gas chromatography-mass spectrometry (GC-MS) analyses of a large number of samples (234) statistically underpin the phenol distributions in the sample sets. The largest average relative contents (1.17-13.3%) of phenols occur in the self-heated samples. In these, relatively high amounts of phenol, C1- and C2-phenols reflect the thermal
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Sithole, Bishop B., David T. Williams, Chester Lastoria, and John L. Robertson. "Determination of Halogenated Phenols in Raw and Potable Water by Selected Ion Gas Chromatography-Mass Spectrometry." Journal of AOAC INTERNATIONAL 69, no. 3 (1986): 466–73. http://dx.doi.org/10.1093/jaoac/69.3.466.

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Abstract Pentafluorobenzylation and in situ acetylation are compared in the determination of phenol and halogenated phenols in water samples. The latter technique is considered superior to the former for determining phenols at the ng/L level because of less background interference and better recoveries (80% or better except for pentachlorophenol and trichloroguaiacol which had recoveries of about 60%). Further evaluation of the in situ technique by electron capture gas chromatography and gas chromatography-mass spectrometry shows that the latter, in the selected ion monitoring mode, is more su
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Dissertations / Theses on the topic "Phenols"

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Rubió, Piqué Laura. "Phenol-enriched olive oil with its own phenolic compounds and complemented with phenols from thyme: a functional food development model." Doctoral thesis, Universitat de Lleida, 2014. http://hdl.handle.net/10803/146133.

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L'enriquiment de l’oli d'oliva amb els seus propis fenols esdevé una estratègia interessant per augmentar i normalitzar la ingesta diària d’hidroxitirosol sense augmentar el consum calòric. No obstant això, olis amb alt contingut fenòlic proporcionen un gust amarg que podria provocar rebuig entre els consumidors. A més, altes dosis d'hidroxitirosol podria tenir una acció pro-oxidant. En aquesta tesi es va plantejar l'estratègia d'enriquiment d’un oli d'oliva no només amb els seus propis fenols, sinó amb fenols complementaris d'herbes aromàtiques, concretament de farigola, amb la hipòtesi de qu
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Lucach, Sandra Ortega. "Phenols in petroleum systems." Thesis, University of Newcastle Upon Tyne, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273711.

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Goss, Ben. "Novel phenolic composites." Thesis, Queensland University of Technology, 1997. https://eprints.qut.edu.au/36933/1/36933_Goss_1997.pdf.

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Composites were prepared from a phenolic resin formulation reinforced with ultra high modulus polyethylene (UHMPE) fibre. Two commercially prepared samples of UHMPE were used: Spectra® prepared by Allied Signal in the USA and Dyneema® prepared by DSM in Holland. To these fibres a number of surface treatments were applied, predominantly oxygen and water plasma, in order to improve composite properties. The effect of treatment was monitored usmg X-ray Photoelectron Spectroscopy (XPS), and treatment time was optimised by this technique. The influence of treatment time on fibre tensile strength
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Fimbres, Michael. "Competitive sulfonimidate alkylations of phenols." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1526904.

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<p> Ethyl <i>N-tert</i>-butyl-4-nitrobenzenesulfonimidate and isopropyl <i> N</i>-(1-adamantyl)-4-nitrobenzenesulfonimidate have been shown to alkylate a variety of different phenols, along with thiophenol and selenophenol. It was shown that ethylation and isopropylation can be successfully carried out using these sulfonimidates with the help of an acid catalyst, tetrafluoroboric acid dimethyl ether complex. Their ability to alkylate selectively on functionally similar groups resulted in the formation of ethers, sulfides, and selenides. Competitive reactions with sterically hindered phenols fo
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Johns, Stephen Christopher. "De Novo Synthesis of Phenols." Thesis, Imperial College London, 2008. http://hdl.handle.net/10044/1/4646.

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This thesis is divided into three chapters. In the first, the methods currently available for the synthesis ofphenols from acyclic precursors are reviewed. The review concentrates on methods that have been usedto form a range of phenols and is divided up according to the type of chemistry employed. The secondchapter describes the development of a novel route to phenols. Initial optimisation results are describedfirst, followed by the synthesis of a library of phenols. The majority of these have not been reportedpreviously. The attempted extension of this work to the formation of anilines, nitr
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Balasainath, Ravindra Kotha. "Regiospecific Synthesis of Ortho Substituted Phenols." TopSCHOLAR®, 2011. http://digitalcommons.wku.edu/theses/1084.

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Phenol is highly reactive toward electrophilic aromatic substitution. By this general approach, many groups can be appended to the ring, via halogenation, acylation, sulfonation, and other processes. Phenol contains the hydroxyl group (–OH), which is a strongly activating ortho/para directing group in aromatic electrophilic substitution (AES). AES gives a mixture of ortho-and para isomers, which must be separated. The strong directing ability of phenol can also result in multiple substitutions on the aromatic ring which could be a major concern in the regiospecific synthesis of phenols. AES an
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Izimas, M. "Selective control of chlorination of phenols." Thesis, Swansea University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637380.

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The chlorination of <I>meta</I>-cresol by sulfuryl chloride in the presence of different sulfur containing catalysts was studied. In homogeneous conditions, the chlorination of <I>meta</I>-cresol was catalysed by dialkyl sulfides and dithia-alkenes. The influence of various reaction parameters was investigated. The dithia-alkanes were not commercially available and needed to be synthesised prior to their use. A new method for the synthesis of unsymmetrical dithia-alkanes was developed. The chlorination of <I>meta</I>-cresol using di-iso-propyl sulfide and di-n-butyl sulfide was scaled up and t
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Amiri, Fariba. "Influence of pH and NOM on Sorption of Phenols onto Aquifer Material." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2005. http://nbn-resolving.de/urn:nbn:de:swb:14-1112166354807-33548.

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Geosorption processes play an important role as retardation mechanism in subsurface transport of organic water constituents. Geosorption behaviour of Ionisable Hydrophobic Organic compounds (IHOCs) especially influence of dissolved natural organic materials on their sorption coefficients is poorly investigated. In this study influence of pH and NOM on the sorption of three different phenols (2-methyl-4,6-dinitrophenol, 2,4,6-trichlorophenol and pentachlorophenol) on a natural sandy aquifer material collected from a bank filtration site was studied in flow through column experiments. In first s
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Bassey, E. N. "The extraction of phenols from ammoniacal liquors." Thesis, University of Bradford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372179.

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Messenger, Beatrice. "Salivary gland peptide hormones and dietary phenols." Thesis, University of Surrey, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326511.

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Books on the topic "Phenols"

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A, Muscolo, and Sidari M, eds. Soil phenols. Nova Science Publishers, 2009.

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Muscolo, A. Soil phenols. Nova Science Publishers, 2009.

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A, Muscolo, and Sidari M, eds. Soil phenols. Nova Science Publishers, 2009.

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Juha, Kallas, and Lappeenrannan teknillinen korkeakoulu, eds. Treatment technology of wastewater containing phenols and phenolic compounds. Lappeenranta University of Technology, 1992.

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International Program on Chemical Safety., World Health Organization, United Nations Environment Programme, and International Labour Organisation, eds. Phenol health and safety guide. World Health Organization, 1994.

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Rappoport, Zvi, ed. The Chemistry of Phenols. John Wiley & Sons, Ltd, 2003. http://dx.doi.org/10.1002/0470857277.

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Tyman, J. H. P. Synthetic and natural phenols. Elsevier, 1996.

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Miller, W. Lash. Toxicity and chemical potential. University library ; pub. by the Librarian, 1995.

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Burlakova, E. B., та N. V. Zagoskina. Fenolʹnye soedinenii︠a︡: Fundamentalʹnye i prikladnye aspekty. Nauchnyĭ mir, 2010.

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Gutsche, C. David. Calixarenes. Royal Society of Chemistry, 1992.

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Book chapters on the topic "Phenols"

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Weber, Manfred, and Markus Weber. "Phenols." In Phenolic Resins: A Century of Progress. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-04714-5_2.

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Patnaik, Pradyot. "Phenols." In Handbook of Environmental Analysis. CRC Press, 2017. http://dx.doi.org/10.1201/9781315151946-49.

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Pengelly, Andrew. "Phenols." In The constituents of medicinal plants, 3rd ed. CABI, 2021. http://dx.doi.org/10.1079/9781789243079.0002.

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Abstract This chapter focuses on phenols and their pharmacological properties. Phenols are one of the largest groups of secondary plant constituents. They are aromatic alcohols since the hydroxyl group is always attached to a benzene ring. Like all alcohols, the names of phenols almost always end in the letters 'ol'. In addition, the ring system may bear other substitutes, such as methyl groups and carboxylic acid.
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Smith, Robert M., and Arthur E. Martell. "Phenols." In Critical Stability Constants. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4615-6764-6_14.

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Singleton, V. L. "Wine Phenols." In Wine Analysis. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83340-3_7.

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Pospíšil, Jan. "Antioxidants: hindered phenols." In Plastics Additives. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5862-6_9.

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Smith, Robert M., and Arthur E. Martell. "Erratum to: Phenols." In Critical Stability Constants. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4615-6764-6_36.

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Cohen, G. B. "The Analysis of Coffee Phenols and Phenolic Acids." In ACS Symposium Series. American Chemical Society, 2000. http://dx.doi.org/10.1021/bk-2000-0754.ch036.

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Thurman, E. M. "Carboxylic Acids and Phenols." In Organic Geochemistry of Natural Waters. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5095-5_6.

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Simándi, László I. "Catalytic Oxidation of Phenols." In Catalysis by Metal Complexes. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2850-6_5.

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Conference papers on the topic "Phenols"

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Zhang, Kai, Jian Li, Zhengyong Huang, Haochen Zuo, Chaofan Wang, and Chen Zhao. "Density Functional Theory Investigation of Antioxidant Properties in Diphenylamine-Bridged Phenols with Diverse Ortho-Substituents." In 2024 IEEE International Conference on High Voltage Engineering and Applications (ICHVE). IEEE, 2024. http://dx.doi.org/10.1109/ichve61955.2024.10676079.

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Zetlmeisl, Michael J. "Naphthenic Acid Corrosion and Its Control." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96218.

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Abstract This paper first presents a brief description of naphthenic acid corrosion and the main factors which influence its onset and severity. After a brief discussion of traditional control methods, it proceeds to a discussion of chemical inhibition, which is a relatively new control technique. Chemical inhibitors can be divided into two broad classifications: phosphorus-based and non-phosphorus-based. Three types of phosphorus-based inhibitors have been reported: amine-neutralized phosphate esters, alkaline earth phosphonate phenate sulfide plus trialkyl phosphate, and thiazolines plus di-
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Nagarajan, Amutha, Pradeep Lakshmanappa, Indrajyoti Mukherjee, et al. "Impact of Vapor Phase Corrosion Inhibitors (VPCI) to Mitigate Corrosion in Refinery Overhead Systems." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-21227.

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Abstract Corrosion in crude distillation unit overhead lines is primarily caused by hydrochloric acid at the dew point. Various other contaminants including air, organic acids, H2S, NH3, tramp amines, HCN, mercaptans, phenols, etc. also play a role in overhead corrosion. Mitigation strategies include process solutions such as wash water systems and temperature control, and chemical solutions including amine-based neutralizers and film-forming inhibitors. Despite implementing these strategies, corrosion is invariably observed in the overhead system. Conventional “non-volatile” filmers rely on f
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Wang, Haoyu, Xue Han, Minkang Liu, Yimin Zeng, and Chunbao Charles Xu. "Corrosion Performance of UNS S31000 under Batch-mode Hydrothermal Liquefaction (HTL) Conversion of Different Biomass." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19216.

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Abstract Hydrothermal liquefaction (HTL) is an important thermochemical technology which uses hot pressurized water to convert wet biomass or biowaste feedstocks into biocrude oils and other marketable bio-chemicals. The presence of hot pressurized water, aggressive catalyst, and organic products can lead to serious corrosion damage and even stress corrosion cracking risk on the HTL reactors. Up to now, very limited information is available about the corrosion of HTL reactor alloys under HTL processes. In this study, the corrosion of a candidate constructional steel (UNS S31000) was investigat
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Tschanner, Julius, Jinchang Ren, Frances Jack, Stephen Marshall, and Huimin Zhao. "Employing NIR-SWIR hyperspectral imaging to predict the smokiness of scotch whisky." In OCM 2017 - 3rd International Conference on Optical Characterization of Materials. KIT Scientific Publishing, 2017. http://dx.doi.org/10.58895/ksp/1000063696-1.

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Scotch Whisky makes a significant contribution to the UK’s food and drinks export. The flavour of this high quality spirit is derived naturally from the whisky making process, with smoky aromas being a key character of certain Scotch whiskies. The level of smokiness is determined by the amount of phenolic compounds in the spirit. Phenols are introduced by exposing the barley malt to peat smoke during the kilning process. The current techniques to determine the levels of phenols, such as High Performance Liquid Chromatography (HPLC), are time consuming as they require distillation of the malt p
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Djelić, Gorica, Vesna Veličković, and Milica Pavlović. "SESELI RIGIDUM WALDST. & KIT: SECONDARY METABOLITES AND ANTIOXIDANT ACTIVITY OF METHANOL, ETHYL ACETATE AND ACETONE EXTRACTS." In 2nd International Symposium on Biotechnology. University of Kragujevac, Faculty of Agronomy, 2024. http://dx.doi.org/10.46793/sbt29.34gdj.

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Representatives of the Seseli genus are recognized for their biological activities. The objective of this study was to analyze the phenolic and flavonoid content, along with the antioxidant effects, of methanol, ethyl acetate, and acetone extracts obtained from the roots, leaves, stems, and fruits of S. rigidum. Through spectrophotometric measurements of phenols and flavonoids, the results revealed that the polar (methanol) solvent extract from the leaves exhibited the highest concentrations of phenols (98.66 ± 2.64 mg GA/g) and flavonoids (20.74 ± 0.55 mg RU/g), surpassing those obtained from
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Todorović, Jovana D., Aleksandra D. Vesić, Nevena N. Petrović, and Marijana M. Kosanić. "Edible mushrooms as promising antioxidants." In 2nd International Conference on Chemo and Bioinformatics. Institute for Information Technologies, University of Kragujevac, 2023. http://dx.doi.org/10.46793/iccbi23.300t.

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Antioxidant activity of the acetone extracts of the mushrooms Macrolepiota procera and Chlorophyllum rhacodes has been screened in vitro by using different methods (DPPH radical scavenging and reducing power assay), and also it has been determined the total phenolic compounds as total flavonoid content. The research findings indicate that the acetone extract of M. procera demonstrated superior antioxidant activities when compared to C. rhacodes. Similarly, the mushroom M. procera displayed a more pronounced effect on reducing power. In addition, the total content of phenol and flavonoid in ext
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Pavlović, M., Z. Simić, and Gorica Đelić. "DETERMINATION OF HEAVY METALS AND SECONDARY METABOLITES OF „PEUCEDANUM OREOSELINUM“ (APIACEAE)." In 1st INTERNATIONAL Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac, 2021. http://dx.doi.org/10.46793/iccbi21.206p.

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The total quantity of metals (Mg, Ca, Ni, Fe, Mn, Zn, Cu) in soil samples and in sixteen different extracts from plant parts of Peucedanum oreoselinum (L.) Moench as well as the content of total phenols and flavonoids in plant extracts was determined. The contents of metals were determined by the atomic absorption spectrometer. Based on the average values of the metal concentration in the soil, they could be arranged in the following sequence: Fe &gt; Ca &gt; Mg &gt; Mn &gt; Zn &gt; Cu &gt; Ni. Soil concentrations of all tested metals were lower than the maximum allowed concentration. The resu
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Šaćirović, Sabina, Andrija Ćirić, Mališa Antić, and Zoran Marković. "HPLC ANALYSIS OF PHENOLS OF SLOVENIAN RED WINES: CABERNET SAUVIGNON AND MERLOT." In 1st INTERNATIONAL Conference on Chemo and BioInformatics. Institute for Information Technologies, University of Kragujevac, 2021. http://dx.doi.org/10.46793/iccbi21.165s.

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In this study, HPLC-DAD rapid analysis of phenols in wine samples was performed. The recording was performed at different wavelengths: phenolic acid (254nm), flavan-3-ols and stilbene (280nm), flavonoids (340nm) and anthocyanins (520nm). In selected wines, the concentrations of the following compounds were determined and expressed in mg/l of wine. The isolated derivatives were: hydroxybenzoic acids, derivatives of caffeic, ferulic, syringic, and vanillic acids, catechin (flavanol), rutin, myricetin and quercetin (flavonols), and the stilbene derivative-resveratrol. The properties and quantitie
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Stoilova, I., A. Krastanov, H. Yemendzhiev, and Z. Alexieva. "Degradation of phenols by Fusarium moniliforme." In Proceedings of the II International Conference on Environmental, Industrial and Applied Microbiology (BioMicroWorld2007). WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789812837554_0042.

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Reports on the topic "Phenols"

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Jayaweera, Ananda. Kinetics of proton transport in lipid membranes induced by some chlorinated phenols. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.215.

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Katzenellenbogen, John A., and Dong Zhou. Expedited Synthesis of Fluorine-18 Labeled Phenols. A Missing Link in PET Radiochemistry. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1176765.

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Nicholson, Ralph, Reuven Reuveni, and Moshe Shimoni. Biochemical Markers for Disease Resistance in Corn. United States Department of Agriculture, 1996. http://dx.doi.org/10.32747/1996.7613037.bard.

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The objective was to screen maize lines for their ability to express resistance based on biochemical traits. Cultivars were screened for retention of the hydroxamic acid DIMBOA and the synthesis of phenols (based on anthocyanin production) as markers for resistance. Lines were selected and inoculated with fungal pathogens (Exserohilum turcicum, Puccinia sorghi, Cochliobolus heterostraphus, Colletotricum graminicola.), and the Maize Dwarf Mosaic and Johnson Grass Mosaic viruses. Lines were screened in the field and greenhouse. Results showed that lines selected for augmented phenol synthesis do
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Savage, P. E. Oxidation of substituted phenols in supercritical water. Final technical report, September 1992--August 1996. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/469173.

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Word, Robert. Distribution of Ionized and Neutral Halogenated Phenols in an Octanol-water Membrane Model System. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.7083.

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Kim, Yun-mi, Samuel Farrah, and Ronald H. Baney. Structure--Antimicrobial Activity Relationship Comparing a New Class of Antimicrobials, Silanols, to Alcohols and Phenols. Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada447843.

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Hensler, Sven. Distribution Coefficients of Ionized and Un-ionized Halogenated Phenols in an Octanol-water System and their Relationship to Molecular Structure. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.7045.

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Maskarinec, M. P., D. L. Manning, and R. W. Harvey. Application of XAD-4 solid sorbent and HPLC (high performance liquid chromatography) with electrochemical detection to the analysis of phenols in water: Final report, November 1983-November 1985. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/6478788.

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Steffens, John, Eithan Harel, and Alfred Mayer. Coding, Expression, Targeting, Import and Processing of Distinct Polyphenoloxidases in Tissues of Higher Plants. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7613008.bard.

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Polyphenol oxidase (PPO) catalyzes the oxidation of phenols to quinones at the expense of O2. PPOs are ubiquitous in higer plants, and their role in oxidative browning of plant tissues causes large annual losses to food production. Despite the importance of PPOs to agriculture, the function(s) of PPOs in higher plants are not understood. Among other roles, PPOs have been proposed to participate in aspects of chloroplast metabolism, based on their occurrence in plastids and high Km for O2. Due to the ability of PPO to catalyze formation of highly reactive quinones, PPOs have also been proposed
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Kanner, Joseph, Edwin Frankel, Stella Harel, and Bruce German. Grapes, Wines and By-products as Potential Sources of Antioxidants. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7568767.bard.

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Several grape varieties and red wines were found to contain large concentration of phenolic compounds which work as antioxidant in-vitro and in-vivo. Wastes from wine production contain antioxidants in large amounts, between 2-6% on dry material basis. Red wines but also white wines were found to prevent lipid peroxidation of turkey muscle tissues stored at 5oC. The antioxidant reaction of flavonoids found in red wines against lipid peroxidation were found to depend on the structure of the molecule. Red wine flavonoids containing an orthodihydroxy structure around the B ring were found highly
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