Academic literature on the topic 'Cleavage of Carbon'

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Journal articles on the topic "Cleavage of Carbon"

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Zhou, Junhui, Xuan Qin, Shenzhi Zhou, Kevin R. MacKenzie, and Feng Li. "CYP3A-Mediated Carbon–Carbon Bond Cleavages in Drug Metabolism." Biomolecules 14, no. 9 (2024): 1125. http://dx.doi.org/10.3390/biom14091125.

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Cytochrome P450 enzymes (P450s) play a critical role in drug metabolism, with the CYP3A subfamily being responsible for the biotransformation of over 50% of marked drugs. While CYP3A enzymes are known for their extensive catalytic versatility, one intriguing and less understood function is the ability to mediate carbon–carbon (C–C) bond cleavage. These uncommon reactions can lead to unusual metabolites and potentially influence drug safety and efficacy. This review focuses on examining examples of C–C bond cleavage catalyzed by CYP3A, exploring the mechanisms, physiological significance, and i
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Liu, Hui, Minghao Feng, and Xuefeng Jiang. "Unstrained CarbonCarbon Bond Cleavage." Chemistry - An Asian Journal 9, no. 12 (2014): 3360–89. http://dx.doi.org/10.1002/asia.201402591.

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Amadio, Emanuele, Rosalia Di Lorenzo, Cristiano Zonta, and Giulia Licini. "Vanadium catalyzed aerobic carbon–carbon cleavage." Coordination Chemistry Reviews 301-302 (October 2015): 147–62. http://dx.doi.org/10.1016/j.ccr.2015.06.004.

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Perrott, A. L., H. J. P. De Lijser та D. R. Arnold. "The importance of conformational effects on the carbon–carbon bond cleavage of β-phenethyl ether radical cations". Canadian Journal of Chemistry 75, № 4 (1997): 384–97. http://dx.doi.org/10.1139/v97-044.

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The photosensitized (electron transfer) bond cleavage of some β-phenylethyl ether radical cations has been investigated. In previous studies the feasibility of the bond cleavage was thought to depend on the bond dissociation energy (BDE). However, this simple hypothesis led to several incorrect predictions and therefore additional criteria, conformational effects, were added to the hypothesis. This study has now been extended and additional examples of the importance of the conformation on the carbon–carbon bond cleavage of radical cations are provided. The four β-phenylethyl ethers studied ar
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Arnold, Donald R., and Laurie J. Lamont. "Photosensitized (electron transfer) carbon–carbon bond cleavage of radical cations: the 2-phenylethyl ether and acetal systems." Canadian Journal of Chemistry 67, no. 12 (1989): 2119–27. http://dx.doi.org/10.1139/v89-330.

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The scope of the photosensitized (electron transfer) carbon–carbon bond cleavage involving radical cations has been defined for 2-phenylethyl ethers and acetals. The thresholds for reactivity of the monophenylethyl and gem-diphenylethyl derivatives are compared. While the radical cation of methyl 2,2-diphenylethyl ether (7) cleaves to give ultimately diphenylmethane (2) and dimethoxymethane (8), the radical cation of methyl 2-phenylethyl ether (9) was stable under these conditions. In contrast to the lack of reactivity of the radical cation of 9, the radical cations of methyl 2-phenyl-2-propyl
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Murakami, Masahiro, and Takanori Matsuda. "Metal-catalysed cleavage of carbon–carbon bonds." Chem. Commun. 47, no. 4 (2011): 1100–1105. http://dx.doi.org/10.1039/c0cc02566f.

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Allpress, Caleb J., and Lisa M. Berreau. "Oxidative aliphatic carbon–carbon bond cleavage reactions." Coordination Chemistry Reviews 257, no. 21-22 (2013): 3005–29. http://dx.doi.org/10.1016/j.ccr.2013.06.001.

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Liu, Hui, Minghao Feng, and Xuefeng Jiang. "ChemInform Abstract: Unstrained Carbon-Carbon Bond Cleavage." ChemInform 46, no. 36 (2015): no. http://dx.doi.org/10.1002/chin.201536277.

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van Maarseveen, Jan H. "Solid Phase Synthesis of Heterocycles by Cyclization/Cleavage Methodologiest." Combinatorial Chemistry & High Throughput Screening 1, no. 4 (1997): 185–214. http://dx.doi.org/10.2174/1386207301666220125213031.

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For the solid phase preparation of various (pharmacologically important) heterocycles, cyclization/cleavage (C/C) or cyclorelease strategies proved to be superior. CC approaches take utmost advantage of the benefits of sol)d phase synthesis. Besides the practical benefits of solid phase reactions, cyclative release approaches are distinguished especially because of the generally found high purity of the final detached products, since only the anticipated structures cleave off the resin. Also cyclization/cleavage strategies are "traceless", as the obtained moiety after cyclization is part of th
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T., S. S. Rao, and Awasthi Shubhra. "Oxidative cleavage of carbon-carbon triple bond - a-review." Journal of Indian Chemical Society Vol. 80, Dec 2003 (2003): 1129–41. https://doi.org/10.5281/zenodo.5839811.

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Department of Chemistry, Dr. H. S. Gour Yishwavidyalaya, Sagar-470 003, India E-mail : drtssrao@yahoo.co.in <em>Manuscript received 20 October 2003</em> Oxidation of phenylacetylene with molecular&middot; oxygen led to the formation of 10 oxygen containing products along with dimerisation, oligomcrisation and polymerisation products. Benzaldehyde, benzoic acid and benzoic anhydride are the main oxidation products. The autoxidation of diphenylacetylene gives benzil as the main product and its yield increases upon use of ditertiary-butylperox1de as initiator. Examination of the erode oxidation m
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Dissertations / Theses on the topic "Cleavage of Carbon"

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Allpress, Caleb J. "Oxidative Aliphatic Carbon-Carbon Bond Cleavage Reactions." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/2003.

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The work presented in this dissertation has focused on synthesizing complexes of relevance to dioxygenase enzymes that oxidatively cleave aliphatic carbon-carbon bonds. The goal of this research was to elucidate mechanistic aspects of the activation of aliphatic carbon-carbon bonds towards cleavage by reaction with oxygen, and also investigate the regioselectivity of these reactions. The oxidative cleavage of a variety of enolizable substrates has been explored by utilizing several transition metal complexes supported by an aryl-appended tris(pyridylmethyl)amine ligand. In order to probe the w
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Nicholls, Julian Charles. "Carbon-carbon bond cleavage in agostic cobalt complexes." Thesis, University of Salford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.258557.

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Sau, Roca Míriam. "From Click Chemistry to catalytic cleavage of unstrained C-C bonds." Doctoral thesis, Universitat Rovira i Virgili, 2016. http://hdl.handle.net/10803/396080.

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Aquesta tesi doctoral es basa principalment amb la síntesis de molècules petites potencialment útils per investigacions avançades. S'han utilitzat diferents metodologies per obtenir-les: 1) Cicloaddicions intramoleculars entre un alkí i una azida lliures de coure per l'obtenció de derivats de benzodiazepines. Obtenint-se una gran varietat de triazols fusionats a heterocicles de set membres. Posteriorment, s'han dut a terme proves d'activitat biològica. 2) a) Trencament d'enllaços carboni-carboni no activats d'amino alcohols i utilització d'aquest com a nucleòfil juntament amb bromurs d'ari
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Dombrowski, James Michael. "Catalytic Cleavage of Carbon-Carbon Sigma Bonds Using Transition Metals." Thesis, Boston College, 2005. http://hdl.handle.net/2345/407.

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Thesis advisor: Lawrence T. Scott<br>The focus of this project was to probe the ability of various transition metal complexes to cleave carbon-carbon bonds in a C30H12 hemifullerene. The hemifullerene was synthesized in our lab from commercial 1-tetralone and bromonaphthalene in six steps. Palladium and nickel complexes were used to open the five membered rings along the periphery of the C30H12 bowl. Diphosphine complexes of nickel were capable of opening either all three five membered rings or one of the periphery five membered rings and the central six membered ring<br>Thesis (BS) — Boston C
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King, Janice E. "Carbon-sulfur bond cleavage by environmental bacteria." Thesis, Queen's University Belfast, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318772.

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Gripton, Christopher J. G. "Germyl linker cleavage with carbon-based electrophiles." Thesis, University of Sheffield, 2004. http://etheses.whiterose.ac.uk/15093/.

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This thesis describes the successful identification of a novel cross-coupling protocol for alkylaryldichlorogermanes, as part of an investigation towards the development of organogermanium linkers for solid phase synthesis. The application of Friedel-Crafts acylation towards the ipso degermylation of aromatic molecules with concomitant introduction of acyl functionality is also described. By way of introduction, an in depth review of the literature surrounding Group 14 organometallic cross-couplings is presented, concentrating on the recent developments in the area of organosilicon and organog
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Morris, A. D. "A study of carbon carbon bond cleavage in strained hydrocarbon systems." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47189.

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Fernandez, Gimenez Marta. "Iridium-catalysed cleavage and formation of unstrained aliphatic carbon-carbon bonds." Thesis, University of Liverpool, 2018. http://livrepository.liverpool.ac.uk/3018330/.

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Johnson, Anne Elizabeth. "L-ribulose-5-phosphate 4-epimerase, epimerisation through carbon-carbon bond cleavage." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27169.pdf.

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Saraf, Sushma L. "Oxidative Carbon-Carbon Bond Cleavage Reactions of Metal Flavonolato and Chlorodiketonate Complexes." DigitalCommons@USU, 2016. https://digitalcommons.usu.edu/etd/5161.

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The research presented in this dissertation has focused on studies of metal complexes which undergo oxidative aliphatic carbon-carbon bond cleavage using dioxygen as the oxidant. The goal of this research was to assess the reactivity and elucidate mechanistic details of the carbon-carbon bond cleavage reactions. The first part of this dissertation explores the light-induced dioxygenase reactivity of ruthenium flavonolato compounds. These compounds are of particular interest as they are currently being explored for their anti-cancer activity. The RuII(n6-p-cymene) flavonolato compounds studied
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Books on the topic "Cleavage of Carbon"

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Nicholls, Julian Charles. Carbon-carbon bond cleavage in agostic Cobalt complexes. University of Salford, 1989.

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Murakami, Masahiro, and Masahiro Murakami, eds. Cleavage of Carbon-Carbon Single Bonds by Transition Metals. Wiley-VCH Verlag GmbH & Co. KGaA, 2015. http://dx.doi.org/10.1002/9783527680092.

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R, Hartley F., and Patai Saul, eds. The Nature and cleavage of metal carbon bonds. J. Wiley, 1985.

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Murakami, Masahiro, and Naoto Chatani. Cleavage of Carbon-Carbon Single Bonds by Transition Metals. Wiley & Sons, Incorporated, John, 2015.

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Murakami, Masahiro, and Naoto Chatani. Cleavage of Carbon-Carbon Single Bonds by Transition Metals. Wiley & Sons, Incorporated, John, 2015.

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Murakami, Masahiro, and Naoto Chatani. Cleavage of Carbon-Carbon Single Bonds by Transition Metals. Wiley & Sons, Incorporated, John, 2015.

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Murakami, Masahiro, and Naoto Chatani. Cleavage of Carbon-Carbon Single Bonds by Transition Metals. Wiley & Sons, Limited, John, 2015.

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Murakami, Masahiro, and Naoto Chatani. Cleavage of Carbon-Carbon Single Bonds by Transition Metals. Wiley & Sons, Limited, John, 2015.

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Hartley. Chemistry of the Metal Carbon Bond: The Nature and Cleavage of Metal-Carbon Bonds. Wiley & Sons, Limited, John, 2009.

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Hartley, Frank R., and Saul Patai. Chemistry of the Metal Carbon Bond, Volume 2: The Nature and Cleavage of Metal-Carbon Bonds. Wiley & Sons, Incorporated, John, 2018.

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Book chapters on the topic "Cleavage of Carbon"

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Grovenstein, E. "By Cleavage of Carbon-Carbon Bonds." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145258.ch20.

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Takahashi, Tamotsu, and Ken-ichiro Kanno. "Carbon-Carbon Bond Cleavage Reaction Using Metallocenes." In Topics in Organometallic Chemistry. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/b96004.

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De Voss, James J., and Max J. Cryle. "Carbon-Carbon Bond Cleavage by P450 Systems." In The Ubiquitous Roles of Cytochrome P450 Proteins. John Wiley & Sons, Ltd, 2007. http://dx.doi.org/10.1002/9780470028155.ch13.

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Anderson, G. K. "Cleavage and Formation of Carbon-Carbon Bonds." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145296.ch225.

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Bellama, J. M. "Cleavage of the Tin-Carbon Bond." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145173.ch225.

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James, B. D. "Cleavage of Group-IIIB-Carbon Bonds." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145180.ch24.

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Xie, L. Y., P. F. Roussi, and D. H. Dolphin. "Cleavage of the Cobalt-Carbon Bond." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145319.ch174.

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Murakami, Masahiro, and Yoshihiko Ito. "Cleavage of Carbon—Carbon Single Bonds by Transition Metals." In Activation of Unreactive Bonds and Organic Synthesis. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-68525-1_5.

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Murakami, Masahiro, and Naoki Ishida. "Rhodium(I)-Catalyzed Reactions via Carbon-Carbon Bond Cleavage." In Rhodium Catalysis in Organic Synthesis. Wiley-VCH Verlag GmbH & Co. KGaA, 2019. http://dx.doi.org/10.1002/9783527811908.ch12.

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Parsons, Andrew T., and Jeffrey S. Johnson. "Dynamic Kinetic Asymmetric Transformations Involving Carbon-Carbon Bond Cleavage." In Asymmetric Synthesis II. Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527652235.ch41.

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Conference papers on the topic "Cleavage of Carbon"

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Williams, Terry M., and Andrew H. Jacobson. "Environmental Fate of Isothiazolone Biocides." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99303.

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Abstract The environmental characteristics of industrial water treatment biocides are of great concern due to increasing regulatory pressure on water discharge and awareness of global ecology. A detailed knowledge of the environmental impact of a biocide is critical to its safe use and requires extensive testing. Isothiazolone biocides are broad spectrum antimicrobials which are used in a variety of industrial water treatment applications. In aquatic environments, these compounds rapidly biodegrade with half-lives significantly less than 24 hours. Metabolism involves cleavage of the isothiazol
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Nhan, Justin, Jacob Sitterly, and Robert L. Brainard. "Modeling the acid-catalyzed cleavage of carbon-oxygen bonds." In Advances in Patterning Materials and Processes XXXVIII, edited by Douglas Guerrero and Daniel P. Sanders. SPIE, 2021. http://dx.doi.org/10.1117/12.2583013.

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Lee, Dongsun, Hide-aki Nishikawa, Yasuji Oda, and Hiroshi Noguchi. "Effects of Gaseous Hydrogen on Fatigue Crack Growth Behavior of Low Carbon Steel." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77726.

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In order to investigate the effects of hydrogen on the fatigue crack growth behavior of low carbon steel JIS S10C, bending fatigue tests were carried out using a specimen with a small blind artificial hole in a low pressure pure hydrogen gas atmosphere. The results show that the fatigue crack growth rate in hydrogen gas is higher than that in nitrogen gas, moreover, the degree of acceleration is greater in the high strain range. In fractography, intergranular facets mixed with ductile fracture and quasi-cleavage fracture with brittle striations appear in a hydrogen gas environment, while only
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Tamai, Naoto, and Hiroshi Masuhara. "Femtosecond Dynamics of C-O Bond Cleavage of a Spirooxazine Photochromic Reaction." In International Conference on Ultrafast Phenomena. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/up.1992.tuc19.

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Spirooxazines are known as typical organic compounds exhibiting photochromism [1]. Upon ultraviolet irradiation, the bond between the spiro carbon and oxygen undergoes fission, facilitating the structural change to form merocyanine as illustrated in scheme I.
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Yus, M., E. Alonso, J. Ferrandez, et al. "Arene-Catalysed Reductive Cleavage of the Benzylic Carbon-Sulfur Bond: Generation of Benzylic Lithium Reagents." In The 4th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2000. http://dx.doi.org/10.3390/ecsoc-4-01801.

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Nagao, Akihide, Shuai Wang, Kelly E. Nygren, Mohsen Dadfarnia, Petros Sofronis, and Ian M. Robertson. "Effect of Hydrogen on Fatigue-Crack Growth of a Ferritic-Pearlitic Low Carbon Steel." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-66273.

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The effect of external high-pressure H2 gas on fatigue-crack growth behavior has been examined using a ferritic-pearlitic low carbon steel. The presence of hydrogen accelerates the crack growth rate by ≈13 times compared to the uncharged state and shifts the fracture surface morphology from ductile striations to a mixture of “flat” and “quasi-cleavage” features. The common feature found in the microstructure immediately beneath the hydrogen-induced fracture surface is enhanced plasticity in terms of refined dislocation cell structures and dense dislocation bands.
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Squire, D. W., C. S. Dulcey, and M. C. Lin. "Multiphoton ionization mass spectrometric studies of methyl metal decomposition on heated substrates." In OSA Annual Meeting. Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.thm9.

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Multiphoton ionization mass spectrometry (MPI/MS) is used as a probe for methyl radical in the pyrolysis of methyl metals (trimethylaluminum, TMA; trimethylgallium, TMG), important molecules in chemical vapor deposition of semiconductors. In TMA pyrolysis, methyl radical is produced with an activation energy of 13 kcal/mole despite an aluminum–carbon bond strength of ~60 kcal/mole. No ethane or methane formation can be seen from any substrate. The proposed mechanism for the pyrolysis is that formation of a bond between aluminum and the electron donating surface catalyzes the cleavage of the al
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Marie, Stéphane, Jérôme Demarecaux, Philippe Fichot, Mejido Hajjaj, and Cecile Miller. "Flamanville EPR RPV’s Heads Carbon Segregation: Impact of the High Carbon Segregation on the Mechanical Properties of the RPV Steel." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84330.

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To characterize the mechanical properties of the residual carbon segregation of the Flamanville EPR RPV heads, a testing program have been organized by Framatome and performed in 3 laboratories. Three sacrificial pieces have been used for this program, allowing the investigation of different carbon contents, coupled with different quenching conditions (thanks to a specimen sampling at different positions in the heads thickness). As expected, the increase of the carbon content leads to an increase of the tensile properties, a shift toward the higher temperature of the brittle-to-ductile transit
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Yamaguchi, Teruhiro, Yuma Higashino, and Toshiyuki Meshii. "Application of the Modified Ritchie–Knott–Rice Criterion to Predict Fracture of Miniaturized Charpy Type SE(B) Specimens From Full Sized Specimens." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63211.

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This paper introduces our experience of using miniaturized Charpy type SE(B) specimen in obtaining fracture toughness Jc of a material in the ductile to brittle transition temperature (DBTT) region. 0.55% carbon steel JIS S55C, whose tensile to yield stress ratio σTS/σYS was equal to 1.8 was chosen as a material to simulate a degraded (embrittled) material in the DBTT region. Focus was placed on whether the modified Ritchie–Knott–Rice (RKR) failure criterion which predicts the onset of cleavage fracture when the crack opening stress measured at 4 times the crack-tip opening displacement σ22d e
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Duncan, Andrew, Poh-Sang Lam, and Thad Adams. "Tensile Testing of Carbon Steel in High Pressure Hydrogen." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26736.

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An infrastructure of new and existing pipelines and systems will be required to carry and to deliver hydrogen as an alternative energy source under the hydrogen economy. Carbon and low alloy steels of moderate strength are currently used in hydrogen delivery systems as well as in the existing natural gas systems. It is critical to understand the material response of these standard pipeline materials when they are subjected to pressurized hydrogen environments. The methods and results from a testing program to quantify hydrogen effects on mechanical properties of carbon steel pipeline and pipel
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Reports on the topic "Cleavage of Carbon"

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Frost, J. W. Biotic and abiotic carbon to sulfur bond cleavage. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5474561.

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Frost, J. W. Biotic and abiotic carbon to sulfur bond cleavage. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5215659.

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Frost, J. W. Biotic and abiotic carbon to sulfur bond cleavage. Final report. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10150691.

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Bausch, M. Protocols for the selective cleavage of carbon-sulfur bonds in coal. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5795565.

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John J. Kilbane II. Metabolic Engineering to Develop a Pathway for the Selective Cleavage of Carbon-Nitrogen Bonds. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/887496.

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John J. Kilbane II. METABOLIC ENGINEERING TO DEVELOP A PATHWAY FOR THE SELECTIVE CLEAVAGE OF CARBON-NITROGEN BONDS. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/836101.

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John J. Kilbane III. METABOLIC ENGINEERING TO DEVELOP A PATHWAY FOR THE SELECTIVE CLEAVAGE OF CARBON-NITROGEN BONDS. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/822693.

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John J. Kilbane II. Metabolic Engineering to Develop a Pathway for the Selective Cleavage of Carbon-Nitrogen Bonds. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/860998.

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Kayser, K. J., B. A. Bielaga, K. Jackowski, O. Oduson, and J. II Kilbane. Characterization of carbon-sulfur bond cleavage by axenic and mixed cultures of Rhodococcus rhodochrous IGTS8. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/10177078.

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Frost, J. W. Biotic and abiotic carbon to sulfur bond cleavage. Technical report, July 1, 1991--September 30, 1991. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10139558.

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