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Relevant bibliographies by topics / Radical CH

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Academic literature on the topic 'Radical CH'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "Radical CH"

1

Behrens, Günter, and Günther Koltzenburg. "Elimination of Ammonium Ion from the a-Hydroxyalkyl Radicals of Serine and Threonine in Aqueous Solution and the Difference in the Reaction Mechanism." Zeitschrift für Naturforschung C 40, no. 11-12 (1985): 785–97. http://dx.doi.org/10.1515/znc-1985-11-1207.

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Abstract The zwitterionic radicals HO-ĊH-CH(COO-)NH3+ (4a) and HO-Ċ(CH3)-CH(COO-)NH3+ (4b) are the main species produced upon OH· radical attack in aqueous solutions at pH 3-7 at the amino acids serine, HO-CH2-CH(COO-)NH3+, or threonine, HO-CH(CH3)-CH(COO-)NH3+, respectively. Both radicals undergo elimination of NH4+ ion to form the radicals O=CH-ĊH-COO- (7) or CH3-CO-ĊH-COO- (9) respectively.The pKa of the serine-derived cationic radical HO-ĊH-CH(COOH)NH3+ (3a) (3a ⇄ 4a + H+), was determined by ESR spectroscopy to 2.2 ± 0.1 at 276 K. From kinetic data the pKa(OH) of radical 4a (4a ⇄ O-ĊH-CH(C

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Henry-Riyad, Huda, and Thomas T. Tidwell. "Cyclization of 5-hexenyl radicals from nitroxyl radical additions to 4-pentenylketenes and from the acyloin reaction." Canadian Journal of Chemistry 81, no. 6 (2003): 697–704. http://dx.doi.org/10.1139/v03-076.

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Photochemical Wolff rearrangements were used to form 5-substituted-4-pentenylketenes 1a1d (RCH=CHCH2XCH2CH=C=O: 1a R = H, X = CH2; 1b R = Ph, X = CH2; 1c R = c-Pr, X = CH2; 1d R = H, X = O), which were observed by IR at 2121, 2120, 2119, and 2126 cm1, respectively, as relatively long-lived species at room temperature in hydrocarbon solvents. These reacted with the nitroxyl radical tetramethylpiperidinyloxyl (TEMPO, TO·) forming carboxy-substituted 5-hexenyl radicals 3, which were trapped by a second nitroxyl radical forming 1,2 diaddition products 4a4d. On thermolysis, 4a4d underwent rever

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Michael, A., P. Misra, and V. Kushawaha. "Chemiluminescent Studies Involving Collisions of CHO+ Ions and CH4 Molecules." Applied Spectroscopy 46, no. 5 (1992): 797–99. http://dx.doi.org/10.1366/0003702924124682.

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Emission bands of the CHO, CH, and OH radicals, together with atomic hydrogen transitions, have been observed due to collisions of CHO+ ions and CH4 molecules. Cross sections of the most intense band of the CH radical have been determined at different laboratory kinetic energies of the CHO+ ions in the range 100 to 900 eV.

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Bernath, P. F., C. R. Brazier, T. Olsen, et al. "Spectroscopy of the CH free radical." Journal of Molecular Spectroscopy 147, no. 1 (1991): 16–26. http://dx.doi.org/10.1016/0022-2852(91)90164-6.

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XIE, HONG-BIN, and YI-HONG DING. "DOES P-YLIDIC RADICAL FEATURE THE YLIDIC OR RADICAL CHARACTER TOWARD FORMALDEHYDE?" Journal of Theoretical and Computational Chemistry 06, no. 03 (2007): 531–40. http://dx.doi.org/10.1142/s0219633607003258.

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Theoretical investigations are preformed on the model reaction of PH 3 CH + H 2 CO to unravel reactivity of PH 3 CH , so-called Ylide-like radical, at G3MP2 and CCSD(T)/aug-cc-pVDZ//MP2/6-311++G(d,p) level. The results indicate that P -Ylidic radical behaves differently from the P -Ylide or usual unsaturated radical toward formaldehyde. For the entrance channels, [2+2] cycloaddition to form oxaphosphetane radical INT1 is more favorable, which is an analogical process to Witting reaction of P -Ylide. So PH 3 CH shows P -Ylide character in entrance channel, which has found the support from the d

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XU, JIAN-HUA, LAI-CAI LI, YAN ZHENG, JUN-LING LIU, and XIN WANG. "THEORETICAL STUDIES ON THE REACTION MECHANISM OF HNCS WITH CH2CH RADICAL." Journal of Theoretical and Computational Chemistry 06, no. 01 (2007): 1–12. http://dx.doi.org/10.1142/s0219633607002794.

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The reaction mechanisms of HNCS with CH 2 CH radical have been investigated by density functional theory (DFT). The geometries and harmonic frequencies of the reactants, intermediates, transition states and products have been calculated at the B3LYP/6-311++G(d,p) level. The results show that the reaction is very complicated. Nine possible reaction pathways were identified. The results show that the most feasible reaction channel is the hydrogen-transfer pathway CH 2 CH + HNCS → IMA1 → TSA1 → CH 2 CHH + NCS . The pathway VIC C-S addition channel ( CH 2 CH + HNCS → TSD5 → IMD4 → TSD9 → CH 2 CHS

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Ikuno, Takashi, Syunji Takahashi, Kazunori Kamada, et al. "Influence of the Plasma Condition on the Morphology of Vertically Aligned Carbon Nanotube Films Grown by RF Plasma Chemical Vapor Deposition." Surface Review and Letters 10, no. 04 (2003): 611–15. http://dx.doi.org/10.1142/s0218625x03005505.

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Vertically aligned carbon nanotube (VACNT) films have been grown by RF plasma chemical vapor deposition (RF-PECVD) with a controlling plasma condition. From the in situ optical emission spectroscopy (OES) and self-bias measurements, we have investigated the relationship between the morphology of VACNTs and the plasma condition in PECVD. CH radical and atomic hydrogen peaks were prominent in the OES spectra of CH 4 plasma. The plasma condition was changed by varying the interelectrode distance in PECVD. With increasing interelectrode distance, the diameter and density of VACNTs increased as a r

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Yoshioka, Aki, Teruyuki Seino, Masayoshi Tabata, and Mitsuo Takai. "Homolytic Scission of Interunitary Bonds in Lignin Induced by Ultrasonic Irradiation of MWL Dissolved in Dimethylsulfoxide." Holzforschung 54, no. 4 (2000): 357–64. http://dx.doi.org/10.1515/hf.2000.062.

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SummaryAn electron spin resonance (ESR) method combined with a spin trapping technique was applied to trap and characterize unstable radicals which were generated by ultrasonic irradiation of the dimethylsulfoxide (DMSO) solution of a softwood, Yezo Spruce (Picea jezoensiscarr.) lignin. It was found that an unstable secondary carbon radical, ~CH • in the solution was trapped as the stable nitroxide spin adduct when the DMSO solution was subjected to ultrasonic irradiation in the presence of a spin trapping reagent: 2,4,6-tri-tert-butylnitrosobenzene (BNB) at 50°C for 30 min. This means that th

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So, Sui, Benjamin B. Kirk, Adam J. Trevitt, Uta Wille, Stephen J. Blanksby, and Gabriel da Silva. "Unimolecular reaction chemistry of a charge-tagged beta-hydroxyperoxyl radical." Phys. Chem. Chem. Phys. 16, no. 45 (2014): 24954–64. http://dx.doi.org/10.1039/c4cp02981j.

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The study of unimolecular isomerization and decomposition of a charge-tagged β-hydroxyperoxyl radical anion ˙CH<sub>2</sub>C(OH)(CH<sub>3</sub>)CH<sub>2</sub>C(O)O<sup>−</sup> using mass spectrometry, quantum mechanical calculations and master equation kinetic simulations.

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Boufoy-Bastick, Béatrice. "Educational, Economic and Social Influences on Cultural Heritage in Trinidad." Policy Futures in Education 7, no. 4 (2009): 368–78. http://dx.doi.org/10.2304/pfie.2009.7.4.368.

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This research presents traditional cultural heritage (CH) as a dynamic social process – a positive feedback loop enhancing cultural identity and institutional authority through a contested authoritative inclusion of the ‘objects' it comprises. It then focuses on one part of that process, the individuals' construction of their CH, and defines CH as the ‘transgenerational component of identity’. Research is cited to support a postmodernist and radical constructivist perspective of CH and to show how this definition evolves from such a perspective. This study qualitatively tests this perspective

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Dissertations / Theses on the topic "Radical CH"

1

Murray, Craig. "State-resolved collisional coupling of excited states of the CH radical." Thesis, University of Edinburgh, 2001. http://hdl.handle.net/1842/15468.

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Ribeiro, Joao Marcelo Lamim. "Kinetics and Reaction Mechanisms for Methylidyne Radical Reactions with Small Hydrocarbons." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/3023.

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The chemical evolution with respect to time of complex macroscopic mixtures such as interstellar clouds and Titan’s atmosphere is governed via a mutual competition between thousands of simultaneous processes, including thousands of chemical reactions. Chemical kinetic modeling, which attempts to understand their macroscopic observables as well as their overall reaction mechanism through a detailed understanding of their microscopic reactions and processes, thus require thousands of rate coefficients and product distributions. At present, however, just a small fraction of these have been well-s

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Bernard, Jean-Michel. "Simulation expérimentale de la chimie atmosphérique de Titan : Suivi des espèces produites et comparaison à un modèle cinétique." Paris 7, 2004. https://tel.archives-ouvertes.fr/tel-00008510.

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Tran, Bich Ngoc. "Modélisation de la Fluorescence Induite par Laser saturée à trois niveaux sur le radical CH. : validation expérimentale sur des flammes laminaires." Châtenay-Malabry, Ecole centrale de Paris, 2003. http://www.theses.fr/2003ECAP0933.

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Cette thèse présente le développement de la fluorescence induite par laser (LIF) sur le radical CH, son adaptation et son utilisation dans les flammes laminaires prémélangées et non- prémélangées à contre-courant CH4-air et C3H8-air. En analysant les différents schémas utilisables pour la fluorescence induite par laser, la spectroscopie et les caractéristiques du radical CH, nous avons défini une des stratégies d'excitation/détection la mieux adaptée pour effectuer la mesure de CH dans les flammes étudiées. Un nouveau modèle pour la LIF à trois niveaux sur le radical CH, qui est lié avec la st

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Giarracca, Lucia. "Impact of lignocellulosic biofuels on NOx formation in premixed laminar flames." Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1R059/document.

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Les objectifs de ce travail portent sur le rôle de l'oxydation de biocarburants lignocellulosiques dans la cinétique de formation des oxydes d'azote. Le choix s’est porté sur le furane (F) et le tétrahydrofurane (THF). Cette thèse a permis d’acquérir une base de données expérimentales détaillée afin de tester des mécanismes cinétiques d'oxydation de ces biocarburants disponibles dans la littérature ainsi que d’évaluer leur aptitude à prévoir la formation de CH initiateur du NO précoce. Six flammes laminaires prémélangées à basse pression (5.3 kPa) ont été étudiées à deux richesses (1,0 et 1,2)

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Meden, Peter. "Kinetik inelastischer Stösse von CH(A2D, v=)- [CH(A 2 Delta, v o)] und CH(B2S-, v=0)-Radikalen [CH(B 2 Sigma, v 0)-Radikalen] mit CO-Molekülen." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964724936.

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bernard, jean-michel. "Simulation expérimentale de la chimie atmosphérique de Titan : Suivi des espèces produites et comparaison à un modèle cinétique." Phd thesis, Université Paris-Diderot - Paris VII, 2004. http://tel.archives-ouvertes.fr/tel-00008510.

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Depuis plusieurs années, le Groupe de Physico-Chimie Organique Spatiale au sein du LISA a développé un programme expérimental en laboratoire ayant pour objectif de simuler la chimie atmosphérique de Titan. Des techniques d'analyse ont été développées pour détecter et quantifier les composés formés au cours de ces simulations : spectrométrie d'absorption IR et Chromatographie en Phase Gazeuse Couplée à la Spectrométrie de Masse (CPG-SM) pour les composés gazeux, analyse élémentaire et pyrolyse couplée à la CPG-SM pour les composés solides déposés sur les parois du réacteur. Cependant, vu la com

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Stakhursky, Vadim Leonidovich. "Vibronic structure and rotational spectra of radicals in degenerate electronic state. Case of CH₃O and asymmetrically deuterated isotopomers (CHD₂O and CH₂DO) /." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1117634691.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xv, 323 p.; also includes graphics (some col.) Includes bibliographical references. Available online via OhioLINK's ETD Center

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DAELE, VERONIQUE. "Etudes cinetiques de reactions des radicaux libres d'interet atmospherique no#3, ch#3o, ch#3o#2, cl, clo." Paris 7, 1994. http://www.theses.fr/1994PA077018.

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Des etudes cinetiques de reactions mettant en jeu des radicaux libres d'interet atmospherique ont ete effectuees en reacteur a ecoulement rapide couple a l'analyse des especes par spectrometrie de masse (sm) et par fluorescence induite par laser (fil). L'analyse par fil a ete installee et validee par la detection du radical ch#3o et par l'etude cinetique de la reaction de ce radical avec no. Les reactions etudiees (a 298 k) sont: 1 les reactions du radiccal no#3 avec des butadienes (le butadiene-1,3, le methyl-2 butadiene-1,3 ou isoprene et le dimethyl-2,3 butadiene-1,3): la mesure des constan

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Stakhursky, Vadim L. "Vibronic structure and rotational spectra of radicals in degenerate electronic state. Case of CH₃ O and asymmetrically deuterated isotopomers (CHD₂ O and CH₂ DO)." The Ohio State University, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=osu1117634691.

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Books on the topic "Radical CH"

1

Herbert, Lee Brian. The kinetics of CH and CN radical reactions. University of Birmingham, 1995.

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Hammond, Fred. Fred Hammond & Radical for Christ / Pages of Life, Ch". Brentwood-Benson, 1999.

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Jason, Beckett. Part IV Debates, Ch.47 Creating Poverty. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780198701958.003.0048.

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This chapter argues that poverty is created, maintained, and regulated. Global poverty occupies a unique position as both the ‘blind spot’ and raison d’être of an international legal system that has long attempted to secure a veneer of cooperation, justice, and legitimacy over a reality of competition, conquest, and exploitation. As such, it vividly illustrates the radical indeterminacy and ‘schizophrenia ‘ that ‘ tear[s]‌ apart the fragile structure’ of international law. That this contradiction appears to be little analysed, that there is so little conversation to detail, is testament to the

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Rose, Parfitt. Part III Regimes and Doctrines, Ch.29 Theorizing Recognition and International Personality. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780198701958.003.0030.

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This chapter examines the way in which the legal effect of recognition on international personality has been theorized. Bringing some of the most prominent theories of the relationship between recognition and international personality into conversation with some of their most recent and radical alternatives, the chapter considers why colonial patterns of inequality persist, in spite of the ‘rolling out’ of international personality globally. Is it possible that orthodox theories of this relationship have ‘determined’ these patterns in some way? The focus therefore is on international recogniti

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Filipe, dos Reis, and Kessler Oliver. Part II Approaches, Ch.17 Constructivism and the Politics of International Law. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780198701958.003.0018.

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This chapter argues that the ‘moderate’ and ‘radical’ versions of constructivism differ in their very understanding of the politics of international law and thus the way they connect to international legal theory (ILT). The moderate version is formed as an attempt to marry sociological institutionalism with (what this version perceives to be) critical theory. The research of moderate constructivists is driven by a functionalist understanding of international law, in which law helps to secure normative progress. This leads moderate constructivists to make visible the force of law through states

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R, Leone Stephen, and United States. National Aeronautics and Space Administration., eds. Rate coefficients for reactions of ethynyl radical (C₂H) with HCN and CH₃CN: Implications for the formation of complex nitriles on Titan. National Aeronautics and Space Administration, 1997.

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7

Mauro, Barelli. Part II Group Identity, Self-Determination, and Relations with States, Ch.9 Free, Prior, and Informed Consent in the UNDRIP: Articles 10, 19, 29(2), and 32(2). Oxford University Press, 2018. http://dx.doi.org/10.1093/law/9780199673223.003.0010.

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This chapter addresses the norm of free, prior, and informed consent (FPIC) found in Articles 10, 19, 29(2), and 32(2). The rights to participation and consultation are crucial to guarantee the effective protection of the rights and interests of any ethno-cultural group, and represent a fundamental aspect of modern democratic societies. Accordingly, FPIC reinforces significantly the provisions of the Declaration dealing with participatory rights, and specifically those concerning the right of indigenous peoples to be consulted with regard to matters affecting them. At a minimum, FPIC requires

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Jörg, Kammerhofer. Part II Approaches, Ch.20 International Legal Positivism. Oxford University Press, 2016. http://dx.doi.org/10.1093/law/9780198701958.003.0021.

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This chapter explores the role of positivism in international law, noting that the term ‘positivism’ itself has many connotations, most of which muddy an already neglected—yet strikingly pervasive—approach to international law. On that note, the chapter explores the differences (and overlaps) between positivism and formalism; then, it shows how radically different modern, philosophically- and jurisprudentially-informed forms of international legal positivism are, how little they are touched by the constant attack on the positivist–voluntarist straw man, and how unfair it is to lump them togeth

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Lassiter, Daniel. Previous work on graded modality: Lewis and Kratzer. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198701347.003.0003.

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This chapter begins the discussion of graded modality with a review of two influential previous accounts. Lewis’ qualitative theory of comparative goodness begins with an ordinal scale – like those discussed in chapter 2, but composed of propositions rather than individuals. Measurement-theoretic considerations reveal that Lewis’ semantics is inadequate on several fronts, including the interpretation of quantitative comparisons (much better than) and a problematic ‘maximax’ feature that Lewis himself identifies. Kratzer’s proposal – a modification of Lewis’ which extends the account to non-gra

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Book chapters on the topic "Radical CH"

1

"What’s radical about radical painting?" In Techne Theory. Bloomsbury Academic, 2019. http://dx.doi.org/10.5040/9781350101371.ch-010.

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"Radical Converts." In The New Frontiers of Jihand. I.B.Tauris, 2008. http://dx.doi.org/10.5040/9780755609949.ch-010.

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Leiby, Sofia. "Radical Proximity." In Beyond Critique: Contemporary Art in Theory, Practice, and Instruction. Bloomsbury Academic, 2017. http://dx.doi.org/10.5040/9781501323430.ch-009.

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"Radical Revelation." In Radical Revelation. Bloomsbury T&T Clark, 2017. http://dx.doi.org/10.5040/9780567677815.ch-004.

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Warn, Sarah. "Radical acts." In Reading the L word. I.B.Tauris, 2006. http://dx.doi.org/10.5040/9780755699728.ch-018.

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"Radical Animism: Climate Change and Other Transformations." In Radical Animism. Bloomsbury Academic, 2021. http://dx.doi.org/10.5040/9781350111189.ch-001.

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"Surviving the Anthropocene Revolutionary Rhythms." In Radical Animism. Bloomsbury Academic, 2021. http://dx.doi.org/10.5040/9781350111189.ch-002.

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"Animals at the End of the World: The Evolution of Life and Language." In Radical Animism. Bloomsbury Academic, 2021. http://dx.doi.org/10.5040/9781350111189.ch-003.

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"Hatching: Psychoanalysis and the Textual Unconscious." In Radical Animism. Bloomsbury Academic, 2021. http://dx.doi.org/10.5040/9781350111189.ch-004.

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"‘Would to God that all the Lords people were Prophets’." In Radical Prophet. I.B. Tauris, 2017. http://dx.doi.org/10.5040/9781350987685.ch-001.

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Conference papers on the topic "Radical CH"

1

Asada, Noriaki, Masato Yasumoto, and Nagao Kamijo. "LIF measurement of CH* radical state through chemical sputtering." In OE/LASE '92, edited by William G. Golden. SPIE, 1992. http://dx.doi.org/10.1117/12.59309.

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Truppe, Stefan, Michael Tarbutt, Ed Hinds, and Richard Hendricks. "MEASUREMENT OF THE LOWEST MILLIMETER-WAVE TRANSITION FREQUENCY OF THE CH RADICAL." In 69th International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.wf05.

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Wang, Fang, David Nesbitt, and Chih-Hsuan Chang. "HIGH-RESOLUTION INFRARED SPECTROSCOPY SLIT-JET COOLED HYDROXYMETHYL RADICAL (CH2OH): CH SYMMETRIC STRETCHING MODE." In 69th International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.te01.

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Sibert, Edwin, Daniel Tabor, Timothy Zwier, and Joseph Korn. "CONFORMATION-SPECIFIC SPECTROSCOPY OF ALKYL BENZYL RADICALS: EFFECTS OF A RADICAL CENTER ON THE CH STRETCH INFRARED SPECTRA OF ALKYL CHAINS." In 71st International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2016. http://dx.doi.org/10.15278/isms.2016.rj02.

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Lauer, Martin, and Thomas Sattelmayer. "On the Adequacy of Chemiluminescence as a Measure for Heat Release in Turbulent Flames With Mixture Gradients." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59631.

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The determination of the heat release in technical flames is commonly done via bandpass filtered chemiluminescence measurements in the wavelength range of OH* or CH* radicals, which are supposed to be a measure for the heat release rate. However, these indirect heat release measurements are problematic, because the measured intensities are the superposition of the desired radical emissions and contributions from the broadband emissions of CO2*. Furthermore, the chemiluminescence intensities are strongly affected by the local air excess ratio of the flame and the turbulence intensity in the rea

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Versailles, Philippe, Graeme M. G. Watson, Antoine Durocher, Gilles Bourque, and Jeffrey M. Bergthorson. "Thermochemical Mechanism Optimization for Accurate Predictions of CH Concentrations in Premixed Flames of C1-C3 Alkane Fuels." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64995.

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Increasingly stringent regulations on NOx emissions are enforced by governments owing to their contribution in the formation of ozone, smog, fine aerosols, acid rains and nutrient pollution of surface water, which affect human health and environment. The design of high-efficiency, low-emission combustors achieving these ever-decreasing emission standards requires thermochemical mechanisms of sufficiently high accuracy. Recently, a comprehensive set of experimental data, collected through laser-based diagnostics in atmospheric, jet-wall, stagnation, premixed flames, was published for all isomer

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Ghaderi, M., and A. K. Gupta. "Spectroscopic Analysis of Diffusion Flame Using High Temperature Combustion Air." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52179.

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Results are presented on the effect of high temperature combustion air on the thermal and chemical behavior of propane-air diffusion flames using spectroscopic diagnostic techniques. The oxygen concentration in air was 21% by volume for both the normal and highly preheated air flames. The temperature distribution within the flames has been obtained for a burning fuel jet using normal temperature and high temperature combustion air. Spatial distribution of C2, CH and OH from within the flames in 2-D has been obtained. An ICCD (image intensified charge coupled device) camera fitted with an appro

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Durocher, Antoine, Philippe Versailles, Gilles Bourque, and Jeffrey M. Bergthorson. "Uncertainty Quantification of NOx Emissions Induced Through the Prompt Route in Premixed Alkane Flames." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75579.

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Increasingly stringent regulations on emissions in the gas turbine industry require novel designs to minimize the environmental impact of oxides of nitrogen (NOx). The development of advanced low-NOx technologies depends on accurate and reliable thermochemical mechanisms to achieve emissions targets. However, current combustion models have high levels of uncertainty in kinetic rates that, when propagated through calculations, yield significant variations in predictions. A recent study identified and optimized nine elementary reactions involved in CH formation to accurately capture its concentr

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Eckart, Sven, Ralph Behrend, and Hartmut Krause. "Microwave influenced laminar premixed hydrocarbon flames: Spectroscopic investigations." In Ampere 2019. Universitat Politècnica de València, 2019. http://dx.doi.org/10.4995/ampere2019.2019.9834.

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Abstract:

Low laminar burning velocity’s and slow reactions propagation are among a key problem in combustion processes with low calorific gas mixtures. The mixtures have a laminar burning velocity of 10 cm/s to 15 cm/s or even below which is 37% of natural gas. Thermal use of these gases could save considerable amounts of fossil fuel and reduce CO2 emissions. Due to low burning velocities and low enthalpy of combustion, ignition and stable combustion is complex, often preventing utilization of these gases. Microwave-assisted combustion can help to solve these problems. With microwave assistance, these

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Breaux, Baine B., Srinibas Karmakar, Shengrong Zhu, and Sumanta Acharya. "Evaluation of Hydrous Ethanol Combustion in a Swirl-Stabilized Combustor." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63688.

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The use of commercial hydrous ethanol reduces the energy cost of producing that fuel, and results in a larger net energy gain per dollar invested. Current production of commercial grade ethanol contains 5% water, and is used routinely in gasoline engines, primarily as an additive, and is currently being considered for use in gas turbines. In this study ethanol is burned in a swirl-stabilized combustor, air is introduced at a constant flow rate through a dump diffuser, and fuels ranging from 0%–20% water in ethanol are injected via pressure-orifice atomizing nozzles. The goal of the study is to

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Reports on the topic "Radical CH"

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Vaghjiani, Ghanshyam. Kinetics of CH Radicals With O2: Evidence for CO-Chemiluminescence in the Gas Phase Reaction. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada406218.

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