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Academic literature on the topic 'Methyl compounds'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 July 2025

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Journal articles on the topic "Methyl compounds"

1

Baron, ML, LL Martin, ID Rae, PM Simmonds, and ML Woolcock. "Relaxation Processes in Aromatic Methyl Groups. II. Methyl-Methyl Nuclear Overhauser Enhancements." Australian Journal of Chemistry 43, no. 4 (1990): 741. http://dx.doi.org/10.1071/ch9900741.

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A range of compounds with methyl groups disposed ortho and peri on heteroaromatic frameworks have been prepared, and T1 values and methyl-methyl Overhauser effects measured for them. Most of the n.O.e . Values were ≤6%, but two examples of methyls flanked by two others exhibited values of 9% (6-hydroxy-4,4,5,7-tetramethyl-3,4-dihydro-2H-benzopyran-2-one) and 15% (1,4,5,8,9-pentamethylcarbazole).

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2

Sarvaiya, Nikulsinh, Hitesh Samata, Sheetal Gulati, and H. Patel. "SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL ACTIVITY OF PYRAZOLE-PYRIMIDONE CLUBBED DERIVATIVES." Rasayan Journal of Chemistry 15, no. 01 (2022): 564–68. http://dx.doi.org/10.31788/rjc.2022.1516656.

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4-(2-(1-(4-aryl-3-(furan-2-yl(hydroxy)methyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carbonyl)-3-methyl5-oxo-1H-pyrazol-4(5H)-ylidene)hydrazinyl)-N-(thiazol-2-yl) benzene sulphonamides (2a-e) were synthesised by condensation of 4-(2-(1-(4-aryl-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carbonyl)-3-methyl-5-oxo-1Hpyrazol-4(5H)-ylidene) hydrazinyl)-N-(thiazol-2-yl) benzene sulphonamide (1a-e) with furfuraldehyde. The structures of all the compounds (2a-e) were characterized duly. The compounds were also monitored for antimicrobial activity.

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Astiti, Ni Putu Adriani, and Yan Ramona. "GC-MS Analysis of Active and Applicable Compounds in Methanol Extract of Sweet Star Fruit (Averrhoa carambola L.) Leaves." HAYATI Journal of Biosciences 28, no. 1 (2021): 12. http://dx.doi.org/10.4308/hjb.28.1.12.

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The leaves of star fruit plants (Averrhoa carambola) have been traditionally used to cure many diseases, such as hypertension and fever. Besides, the leaves of this plant have also widely been used as the main raw material in lawar (a Balinese traditional food) making. In this research, the methanol extract of this plant leaves was analyzed and identified for active compound contents. The main objective of this research was to investigate types of possible active and applicable compounds contained in such leaves, previously extracted/macerated in methanol solution. Analysis was conducted by ap

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Berezina, Nadezhda, and Egor Kolesov. "Assessment of polyfunctional macrocyclic compounds in solution by cryoscopic method." From Chemistry Towards Technology Step-By-Step 4, no. 3 (2023): 76–80. http://dx.doi.org/10.52957/2782-1900-2024-4-3-76-80.

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The article considers the synthesis of meso-tetrakis(1'-methyl-pyrid-4-yl)porphyrin tetratosylate and meso-tetrakis(1'-methyl-carboxymethylpyrid-4-yl)porphyrin tetrabromide. The authors qualified the porphyrin ligands in terms of the electron and 1H NMR spectroscopy. The research determines the decrease of freezing point (ΔTfr) of aqueous solutions of porphyrins, as well as a model N-methyl-pyridinium salt (1 methyl-pyridinium iodide). We used the obtained experimental values of ΔT3 to determine the isotonic coefficient. The obtained results indicate the compounds are almost completely dissoci

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5

Chandrima Debi and Vipin Parkash. "Influence of microbial bioinoculants on the accumulation of new phytocompounds in Oroxylum indicum (L.) Benth. ex Kurz." GSC Biological and Pharmaceutical Sciences 13, no. 3 (2020): 228–43. http://dx.doi.org/10.30574/gscbps.2020.13.3.0413.

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The seedlings of Oroxylum indicum were inoculated with plant growth promoting microbes (PGPMs) mainly, Glomus mosseae, Trichoderma harzianum and Pseudomonas putida both alone and consortium. The GCMS analysis of the methanolic root extract of inoculated seedlings of O. indicum showed that seedlings treated with mixed consortium of mycorrhizal fungi, bacteria and fungus showed the presence of maximum number of phytocompounds. The GC-MS analysis of control seedlings showed presence of 55 compounds where three new compounds were found i.e. 2-Cyclobutene-1-Carboxamide; Tetradecanoic Acid, 10, 13-d

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Chandrima, Debi, and Parkash Vipin. "Influence of microbial bioinoculants on the accumulation of new phytocompounds in Oroxylum indicum (L.) Benth. ex Kurz." GSC Biological and Pharmaceutical Sciences 13, no. 3 (2020): 228–43. https://doi.org/10.5281/zenodo.4415241.

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The seedlings of <em>Oroxylum indicum</em> were inoculated with plant growth promoting microbes (PGPMs) mainly, <em>Glomus mosseae</em>, <em>Trichoderma harzianum</em> and<em> Pseudomonas putida </em>both alone and consortium. The GCMS analysis of the methanolic root extract of inoculated seedlings of <em>O. indicum </em>showed that seedlings treated with mixed consortium of mycorrhizal fungi, bacteria and fungus showed the presence of maximum number of phytocompounds. The GC-MS analysis of control seedlings showed presence of 55 compounds where thr

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7

Shafiq, Nusrat, Azhar Rasul, Sonia Ashraf, et al. "A Synthesis and Pharmaceutical Evaluation of Pyrimidine Derivatives and Their Docking Studies." FRONTIERS IN CHEMICAL SCIENCES 1, no. 2 (2020): 19–28. http://dx.doi.org/10.52700/fcs.v1i2.9.

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A series of halogenated pyrimidine derivatives tetrahydropyrimidine; Ethyl-6-methyl2-oxo-4-phenyl-1,3,4-tetrahydropyrimidine-5-carboxylate (10a), Ethyl-4-(3-Chlorophenyl)-6-methyl-2-oxo-1,3,4-tetrahydropyrimidine-5- carboxylate (10b) andEthyl-4-(4-Chlorophenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (10c) were synthesized by using new strategy in “Grindstone protocol “toget high yield in short time. The synthesized compounds werecharacterized by 1HNMR, 13C-NMR and Mass spectral data and evaluated for their anticanceractivityagainsthuman HepG2 Liver cell lines, for antifungal

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8

Nounah, Issmail, Malika Chbani, Bertrand Matthäus, Zoubida Charrouf, Ahmed Hajib, and Ina Willenberg. "Profile of Volatile Aroma-Active Compounds of Cactus Seed Oil (Opuntia ficus-indica) from Different Locations in Morocco and Their Fate during Seed Roasting." Foods 9, no. 9 (2020): 1280. http://dx.doi.org/10.3390/foods9091280.

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Volatile compounds from oils extracted from cactus seeds (Opuntia ficus-indica) of five regions of Morocco were analyzed by dynamic headspace-GC/MS. Aroma active compounds were characterized by olfactometry. A total of 18 compounds was detected with hexanal, 2-methyl propanal, acetaldehyde, acetic acid, acetoin and 2,3-butanedione as most abundant. Olfactometric analysis showed that those compounds are aroma active; therefore, cactus seed oil flavor can be attributed to those compounds. Moreover, the effect of roasting of cactus seeds on the composition of volatile compounds in the oil was inv

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9

Journal, Baghdad Science. "Synthesis of New Amide and ThioUrease Compounds." Baghdad Science Journal 4, no. 3 (2007): 430–37. http://dx.doi.org/10.21123/bsj.4.3.430-437.

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The reaction of some new Schiff bases ( 2-[(2-Amino – ethylimino)-methyl]-R , 2-({2-[(R-benzylidene)-amino]-ethylimino}-methyl)-R with Benzoyl chloride or Acetyl chloride were carried out. Subsequent reactions of these products N-(2-Amino-ethyl)-N-[Chloro-(R) –methyl]-benzamide or N-(2-{?-[chloro-(R) –methyl]-amino}-ethyl)-N-[chloro-(R) –methyl]- benzamide with thiourea afforded thioureas compounds. The synthesized compounds were confirmed by their IR,UV,spectra and C.H.N. analysis.

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Javaid, Arshad, Iqra Haider Khan, and Malik F. H. Ferdosi. "ANTIMICROBIAL AND OTHER BIOACTIVE CONSTITUENTS OF Cannabis sativus ROOTS FROM PAKISTAN." JOURNAL OF WEED SCIENCE RESEARCH 27, no. 3 (2021): 359–68. http://dx.doi.org/10.28941/pjwsr.v27i3.984.

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Hemp (Cannabis sativa L.), a medicinal plant of family Cannabaceae, growing wildly in most of the rainfed areas of Punjab, Pakistan. In this study, phytochemical profile of methanolic extract of root was assessed through GC-MS analysis and various biologically active compounds were identified through literature survey. There were 14 compounds in the root extract. The most abundant compounds were γ-sitosterol (27.08%) and 9,12-octadecadienoic acid (Z,Z)-, methyl ester (24.09%) and hexadecanoic acid, methyl ester (21.81%). Other identified compounds were methyl stearate (5.51%), stigmasterol (5.

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Dissertations / Theses on the topic "Methyl compounds"

1

Gunawardena, Rohith. "Atmospheric methyl iodide." Full text open access at:, 1985. http://content.ohsu.edu/u?/etd,91.

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2

Overton, Barry M. "The metabolism of n-methyl compounds." Thesis, Aston University, 1987. http://publications.aston.ac.uk/12452/.

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The metabolism of compounds containing the N-methyl group is discussed with particular consideration being made to the possible role of the product of oxidative metabolism, the N-hydroxymethyl moiety, in the generation of potentially toxic, reactive electrophiles. Particular pathways which are considered are: (i), the production of formaldehyde; (ii), the generation of iminium ions or imines; and (iii), the formation of N-formyl compounds which might act as formylating agents. 4-Chloro-N-(hydroxymethyl)benzamide and 3-(4-chlorophenyl)-1-hydroxy-methyl-1-methylurea (the product of oxidative met

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3

Scott, Janet Lesley. "Inclusion compounds of cholic acid and methyl cholate." Thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/25589.

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El-Hamruni, Salima Maherize. "Organometallic compounds containing the (dimethylaminodimethylsilyl)bis(trimethylsilyl) methyl ligand." Thesis, University of Sussex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326949.

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Nomura, Glenn Sterling. "Derivatives of 4-ketoperhydroazulene with bridgehead methyl groups." Diss., Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/27064.

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Aston, Mark Edward. "Downstream etching of indium phosphide and indium with hydrogen atoms and methyl radicals." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28883.

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The etching of indium phosphide and indium by H atoms and methyl radicals has been studied in a discharge flow system at temperatures between 25 and 300°C. The results indicate that the hydrogen atoms react with InP to produce In metal globules and PH₃(g) at temperatures greater than 160°C. Methyl radicals were not found to react with InP. However these radicals were found to react with indium metal and the globules that are produced in the reaction of hydrogen atoms with InP. Reactions were conducted by alternately etching with H atoms and then with CH₃ radicals. Rate constants for these reac

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7

Williams, Kenneth Bruce. "The effect of methyl groups on nucleophilic substitution reactions of chlorocyclotriphosphazenes." Diss., Virginia Polytechnic Institute and State University, 1985. http://hdl.handle.net/10919/49962.

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The reactions of methyl-substituted chlorocyclotriphosphazenes with aryl Grignard reagents and with bifunctional amines, aminoalcohols, and alkoxides were investigated. The characterization data for the compounds formed in the reactions of monomethylpentachlorocyclotriphosphazene and the Grignard reagents were found to be informative with respect to the extent and nature of the interaction between the phosphazene ring and its exocyclic substituents. This interaction was found to be responsible for significant effects on the reactions of the phosphazene ring with nucleophiles. The reactions o

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8

Simpson, Linda. "Trivalent group 13 metal complexes of N-substituted-3-hydroxy-2-methyl-4-pyridinones." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28885.

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The compounds tris(N-ռ-propyl-3-hydroxy-2-methyl-4-pyridinonato) aluminum(III), -gallium(III), and -indium(III) and tris(N-ռ-butyl-3-hydroxy-2-methyl-4-pyridinonato)aluminum(III), -gallium(III), and -indium(III) were synthesized. All six compounds were prepared via the metal template effect. They were characterized by IR, FAB-MS, ¹H NMR, ²⁷Al NMR, and elemental analysis. Three of the six complexes were studied by single-crystal X-ray diffraction. They formed trihydrates, unlike their N-methyl and N-ethyl analogues, which formed dodecahydrates. The ռ-butyl complex Al(C₁₀H₁₄N0₂)₃‧3H₂0 (1) and ռ-

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Mizori, Farhad G. "Transmetallation from zirconium to boron : the synthesis and conjugate addition of mixed unsymmetrical tricoordinate organoboranes containing phenyl and methyl groups /." Diss., Connect to a 24 p. preview or request complete full text in PDF formate. Access restricted to UC campuses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3138868.

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Finlay, Christine Jane. "Pectic methyl and non-methyl esters and the environmental implications of methanol emissions from plants." Thesis, Connect to e-thesis, 2007. http://theses.gla.ac.uk/176/.

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Thesis (Ph.D.) -- University of Glasgow, 2007.<br>PhD thesis submitted to Environmental, Agricultural and Analytical Chemistry, Department of Chemistry, University of Glasgow. Includes bibliographical references. Print version also available.

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Books on the topic "Methyl compounds"

1

Overton, Barry Mark. The metabolism of n-methyl compounds. Aston University. Department of Pharmaceutical Sciences, 1987.

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1952-, Eccles Christine U., and Annau Zoltan 1936-, eds. The Toxicity of methyl mercury. Johns Hopkins University Press, 1987.

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3

F, Hertel R., WHO Task Group on Environmental Health Criteria for Methyl Parathion., United Nations Environment Programme, International Labour Organisation, World Health Organization, and International Program on Chemical Safety., eds. Methyl parathion. World Health Organization, 1993.

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4

W, Ball David, Zehe Michael J, and United States. National Aeronautics and Space Administration., eds. Optimized structures and proton affinities of fluorinated dimethyl ethers: An ab initio study. National Aeronautics and Space Administration, 1996.

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W, Ball David, Zehe Michael J, and United States. National Aeronautics and Space Administration., eds. Optimized structures and proton affinities of fluorinated dimethyl ethers: An ab initio study. National Aeronautics and Space Administration, 1996.

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6

Zogorski, John S. MTBE and other volatile organic compounds: New findings and implications on the quality of source waters used for drinking-water supplies. U.S. Geological Survey, National Water-Quality Assessment Program, 2001.

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International Program on Chemical Safety., ed. Methyl parathion health and safety guide. World Health Organization for the International Programme on Chemical Safety, 1992.

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8

Geological Survey (U.S.), ed. Laboratory method for analysis of small concentrations of methyl tert-butyl ether and other ether gasoline oxygenates in water. U.S. Dept. of the Interior, U.S. Geological Survey, 1998.

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Geological Survey (U.S.), ed. Laboratory method for analysis of small concentrations of methyl tert-butyl ether and other ether gasoline oxygenates in water. U.S. Dept. of the Interior, U.S. Geological Survey, 1998.

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10

Hines, Mark E. Gas exchange in wetlands: Controls and remote sensing : final technical report, NASA grant NAGW-2771. National Aeronautics and Space Administration, 1994.

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Book chapters on the topic "Methyl compounds"

1

Oremland, Ronald S., and U. S. Geological Survey. "Microbial Cycling of Methyl Bromide." In Microbial Growth on C1 Compounds. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0213-8_41.

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"Methyl Jessate." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0537-5_338.

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"Methyl-ester Isochiisanoside." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0541-2_1442.

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"2,4,4′-Methyl kuraridinol." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0535-1_1093.

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"Coronalolide Methyl Ester." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0537-5_246.

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"Tubiferolide Methyl Ester." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0537-5_247.

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"Methyl Quadrangularate N." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0537-5_248.

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"Methyl Quadrangularate A." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0537-5_283.

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"Methyl Quadrangularate I." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0537-5_292.

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"Cycloartenol Methyl Ether." In Natural Compounds. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-0537-5_293.

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Conference papers on the topic "Methyl compounds"

1

Bockris, John O'm, and Bo Yang. "Adsorption and Corrosion Inhibition of Acetylenic Alcohols and Some Related Compounds on Iron in Acid Solutions: a Spectroscopic and Electrochemical Study." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89626.

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Abstract The adsorption process of 1-octyn-3-ol, 1-propyn-3-ol, 1-butyn-3-ol, 1-hexyn-3-ol, 1-phenyl-2-propyn-1-ol, 3-methyl-1-penten-4-yn-3-ol, 1,5-hexadien-3-ol and 3-hexanol on iron electrode in acid solutions (H2SO4 and HC1) have been examined by time-resolved in-situ automatic ellipsometry. The time, concentration and potential dependencies of the adsorption, the subsequent structure transition and polymer growth of the adsorbed layers formed by these compounds on iron were determined. In-situ multiple wavelength ellipsometry in the visible region, XPS and ex-situ FTIR reflection-absorpti

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2

Kusumawati, Dian, Andi Erwin Eka Putra, and Novriany Amaliyah. "Characterisation and Analysis of Chemical Compounds from the Ozonization Process of Crude Palm Oil (CPO) for Biodiesel Production." In International Conference on Research in Engineering and Science Technology (IC-REST) 2023. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-fh0xfc.

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Crude palm oil (CPO) is one of the potential feedstocks for biodiesel production. While CPO has potential as a sustainable biodiesel feedstock, there are still a number of challenges that need to be overcome. One of them is the presence of interfering compounds in CPO, such as free fatty acids and non-triglyceride compounds. This research aims to analyse the density, viscosity, calorific value and identify the types of chemical compounds in CPO for biodiesel production consisting of 100% biodiesel (Fatty Acid Methyl Ester or FAME) without mixture with conventional diesel fuel (fossil diesel).

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3

Gough, M. A., R. A. Mothershaw, and N. E. Byrne. "Molecular Monitoring of Residual Corrosion Inhibitor Actives in Oilfield Fluids: Implications for Inhibitor Performance." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98033.

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Abstract In recent years a number of significant advances in the molecular monitoring of residual corrosion inhibitors in oilfield fluids have been reported. The techniques used, chromatography and mass spectroscopy, provide molecular specificity with high sensitivity, and allow individual molecules to be tracked at low levels (sub ppm) throughout oil production systems. These analyses have demonstrated for the first time how individual corrosion inhibitor molecules behave in real systems, and the results obtained have shown some interesting phenomena. For example, for a series of quaternary a

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4

Kouznetsov, D. L., O. Yu Podkopaeva, Yu V. Chizhov, G. P. Antroshenko, S. M. Shevchenko, and A. I. Altsybeeva. "Relationship between the Structure and Activity of Volatile Corrosion Inhibitors Derived from Cyclic Amines." In CORROSION 2001. NACE International, 2001. https://doi.org/10.5006/c2001-01192.

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Abstract Products of the condensation reaction between morpholine or cyclohexylamine and benzaldehydes have been used extensively as volatile inhibitors of atmospheric corrosion, as well as components of lubricant compositions, biocides and preservatives in automotive cooling liquids and fuels. In this study, we examined the relationship between the electronic structure and inhibition performance of the compounds in an atmospheric corrosion test. The condensation products have significantly lower vapor pressure than parent amines, resulting in longer residence times of inhibitor species at a m

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Koutsoukos, Petros G., P. Klepetsanis, N. Spanos, and D. G. Kanellopoulou. "Calcium Carbonate Crystal Growth and Dissolution Inhibitors." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07052.

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Abstract Calcium carbonate scale formation was simulated by the development in situ of supersaturation in the vicinity of a stainless steel electrode immersed in a stable calcium carbonate solution. The initiation of the growth of the supercritical crystals was accompanied by a decrease of the absolute value of the cathodic current, which at the end of crystallization was constant. The absolute final value of the cathodic current was the measure of the extent of crystallization. In the absence of any additive the only phase identified on the electrode was calcite. In the presence however of ad

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6

Gonzalez, William J., Jacques C. Monette, and Kaj D. Rondum. "Field Experiences Relative to Corrosion Monitoring in Evaluating Oxygen Scavenger Efficacy." In CORROSION 1990. NACE International, 1990. https://doi.org/10.5006/c1990-90181.

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Abstract One of the primary objectives in boiler feedwater preparation is the minimization of dissolved oxygen. The presence of even minute amounts of oxygen - in the parts-per-billion range - is corrosive to ferrous metals, manifesting itself quite clearly as localized pitting failures, and leading to the transport of scale-binding impurities in the steam cycle. While it is the function of a properly operating deaerator to remove over 99% of the incoming oxygen in the feedwater, from roughly 8 ppm to below 10 ppb, the necessity for a chemical scavenger to remove the last traces of oxygen is q

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7

Lukovits, I., T. Kosztolányi, E. Kálmán, and G. Pálinkás. "Corrosion Inhibitors: Correlation between Chemical Structure and Efficiency." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99242.

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Abstract Corrosion inhibition efficiencies of heterocyclic, aromatic or partially saturated aromatic compounds (pyrimidines, benzothiazole derivatives, amino-acids containing an aromatic part, pyridines and quinolines) were correlated with quantum chemical indices of the respective molecules. Inhibition efficiencies measured in acidic solutions containing 0.001 and 0.01 mol/L of the inhibitor, respectively, were collected. The quantum chemical calculations were done by using the simple Hückel method. Comparison of inhibition efficiencies and the differences between energies of the highest occu

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8

Jin, Peng, Srdjan Nesic, and H. Alan Wolf. "Analysis of Corrosion Scales Formed on Steel at High Temperatures in Hydrocarbons Containing Model Naphthenic Acids and Sulfur Compounds." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4075.

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Abstract Corrosive naphthenic acids and sulfur compounds in crude oils present a major challenge for refineries from a corrosion perspective. Although it is accepted that some sulfur compounds may form protective FeS scales on the metal surface and deter corrosion, attempting to correlate the characteristics of FeS scale with its protective properties has not been successful. Given the complex chemical compositions of real crudes, model sulfur compound and model naphthenic acids were used to mimic the corrosion by crude fractions in the present study. The iron sulfide scale formed by the model

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9

Hoshowski, Jody, Alyn Jenkins, Adnan Alhammoud, and Rolando Perez Pineiro. "The Development of Mercaptan Scavenging Test Methods and the Evaluation of Scavenger Chemistries." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-18839.

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Abstract Mercaptans are volatile organosulfur compounds produced in natural environments and together with H2S, constitute the most common sulfur-containing contaminants present in sour crude oil and natural gas condensate. One of the most viable options for removing low quantities of mercaptan, usually below 200 ppm, is the use of mercaptan scavengers. In particular, those scavengers referred to as nonregenerative because they react irreversibly to thiol species and convert them to a more inert form. They can be applied in batches in a liquid or solid form inside bubble towers or packed bed s

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Mori, Kazuhiko, Toshi Miyawaki, and Yasunobu Matsushima. "Effect of Zinc Composite Coating on Corrosion Resistance at High Temperature." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91401.

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Abstract The compositions of zinc composite coating, which shows good heat resistance and high corrosion resistance was investigated with the use of different coatings coated on electrogalvanized steel with various coating solutions containing different kind of metal chloride compounds. Corrosion performance of the respective coatings was evaluated by salt spray test after heating. As a result, the coating with magnesium compound showed highest corrosion resistance after heat treatment at 300°C for 5 hours. Further,the relationship between heat resistance and solubility of compound of chromium

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Reports on the topic "Methyl compounds"

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Lewinsohn, Efraim, Eran Pichersky, and Shimon Gepstein. Biotechnology of Tomato Volatiles for Flavor Improvement. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7575277.bard.

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The main objectives of the research project were: 1. The manipulation, by genetic engineering techniques, of the terpenoid pathway in tomato fruit. Specifically, to test the hypothesis whether overexpression of linalool synthase in tomato fruits will result in the diversion of intermediates of the carotene biosynthetic pathway to linalool, demonstrating that linalool synthase is a key regulatory enzyme, and possibly improving tomato flavor. 2. The elucidation of the biochemical pathway leading to eugenol and methyl eugenol, and the manipulation of this pathway to determine key enzymes and to i

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Yedidia, I., H. Senderowitz, and A. O. Charkowski. Small molecule cocktails designed to impair virulence targets in soft rot Erwinias. United States-Israel Binational Agricultural Research and Development Fund, 2020. http://dx.doi.org/10.32747/2020.8134165.bard.

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Chemical signaling between beneficial or pathogenic bacteria and plants is a central factor in determining the outcome of plant-microbe interactions. Pectobacterium and Dickeya (soft rot Erwinias) are the major cause of soft rot, stem rot, and blackleg formed on potato and ornamentals, currently with no effective control. Our major aim was to establish and study specific bacterial genes/proteins as targets for anti-virulence compounds, by combining drug design tools and bioinformatics with experimental work. The approach allowed us to identify and test compounds (small molecules) that specific

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Kleinschmidt, Dennis, Jonas Petzke, and Florian Brüning. Improvement of an alternative method for the correction of wall slip effects in rheological studies of filled rubber compounds. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.re.1.

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Developing new and improved rubber compounds to meet increasing demands for application specific product properties requires detailed knowledge of material properties to be able to predict the processing behavior. Therefore, rheological material properties, which are traditionally determined using the high-pressure capillary rheometer (HPCR) are of crucial importance. Rubber compounds often exhibit flow anomalies and non-isothermal effects, influenced by the compound ingredients and processing parameters that are generally neglected in rheological studies and simulations. This work presents an

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Carpita, Nicholas C., Ruth Ben-Arie, and Amnon Lers. Pectin Cross-Linking Dynamics and Wall Softening during Fruit Ripening. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7585197.bard.

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Our study was designed to elucidate the chemical determinants of pectin cross-linking in developing fruits of apple and peach and to evaluate the role of breakage cross-linkages in swelling, softening, and cell separation during the ripening. Peaches cell walls soften and swell considerably during the ripening, whereas apples fruit cells maintain wall firmness but cells separate during late stages of ripening. We used a "double-reduction" technique to show that levels of non-methyl esters of polyuronic acid molecules were constant during the development and ripening and decreased only in overr

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Naim, Michael, Gary R. Takeoka, Haim D. Rabinowitch, and Ron G. Buttery. Identification of Impact Aroma Compounds in Tomato: Implications to New Hybrids with Improved Acceptance through Sensory, Chemical, Breeding and Agrotechnical Techniques. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7585204.bard.

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The tomato, a profitable vegetable crop in both the USA and Israel, has benefited significantly from intensive breeding efforts in both countries, and elsewhere (esp. Holland). : Modem hybrids are highly prolific and resistant to a variety of major pests. They produce attractive, firm fruit for both processing and fresh-marketing. In all cases, however, reduction in flavor and aroma have occurred concomitantly with the increase in yield. Sugars-acids ratio dominate fruit taste, whereas aroma volatiles (potent at minute ppb and ppt levels) contribute to the total characteristic tomato flavor. A

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Rouseff, Russell L., and Michael Naim. Characterization of Unidentified Potent Flavor Changes during Processing and Storage of Orange and Grapefruit Juices. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7585191.bard.

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Citrus juice flavor quality traditionally diminishes after thermal processing and continuously during storage. Our prior studies found that four of the five most potent off-aromas formed during orange juice storage had not been identified. The primary emphasis of this project was to characterize and identify those potent flavor degrading aroma volatiles so that methods to control them could be developed and final flavor quality improved. Our original objectives included: 1 Isolate and characterize the most important unidentified aroma impact compounds formed or lost during pasteurization and s

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Beal, Samuel, Matthew Bigl, and Charles Ramsey. Live-fire validation of command-detonation residues testing using a 60 mm IMX-104 munition. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45266.

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Command detonation (i.e., static firing) provides a method of testing munitions for their postdetonation residues early in the acquisition process. However, necessary modifications to the firing train and cartridge orientation raise uncertainty whether command detonation accurately represents residue deposition as it occurs during live-fire training. This study col-ected postdetonation residues from live-fired 60 mm IMX-104 mortar cartridges and then compared estimated energetic-compound deposition rates between live fire and prior command detonations of the same munition. Average live-fire de

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Crouch, Rebecca, Jared Smith, Bobbi Stromer, et al. Preparative, extraction, and analytical methods for simultaneous determination of legacy and insensitive munition (IM) constituents in aqueous, soil or sediment, and tissue matrices. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41480.

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No standard method exists for determining levels of insensitive munition (IM) compounds in environmental matrices. This project resulted in new methods of extraction, analytical separation and quantitation of 17 legacy and 7 IM compounds, daughter products of IM, and other munition compounds absent from USEPA Method 8330B. Extraction methods were developed for aqueous (direct-injection and solid-phase extraction [SPE]), soil, sediment, and tissue samples using laboratory-spiked samples. Aqueous methods were tested on 5 water sources, with 23 of 24 compounds recovered within DoD QSM Ver5.2 limi

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Jimenez, J., D. L. Ederer, and T. Shu. Raman scattering in transition metal compounds: Titanium and compounds of titanium. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/603585.

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Berry, John F. Studies of Metal-Metal Bonded Compounds in Catalysis. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1417486.

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