Littérature scientifique sur le sujet « Nitric monoxide »

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Articles de revues sur le sujet "Nitric monoxide"

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Horváth, Béla, András Hrabák, Krisztina Káldi, Péter Sándor et Zoltán Benyó. « Contribution of the Heme Oxygenase Pathway to the Maintenance of the Hypothalamic Blood Flow during Diminished Nitric Oxide Synthesis ». Journal of Cerebral Blood Flow & ; Metabolism 23, no 6 (juin 2003) : 653–57. http://dx.doi.org/10.1097/01.wcb.0000071890.63724.c9.

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The cerebrovascular effects of the heme oxygenase–carbon monoxide pathway were studied in the rat hypothalamus. Intraperitoneal administration of the heme oxygenase inhibitor zinc deuteroporphyrin 2,4-bis glycol (ZnDPBG, 45 μmol/kg) had no significant effect on the resting cerebral blood flow, but increased hypothalamic nitric oxide synthase activity by 67% without changing the CSF cyclic GMP concentration. After pharmacologic inhibition of nitric oxide synthase, the diminished cerebral blood flow was further reduced by 22% after administration of ZnDPBG, and the effect showed direct correlation with the baseline perfusion level. Therefore, endogenous carbon monoxide may significantly contribute to the cerebral vasoregulation under resting conditions and in pathophysiologic states associated with diminished nitric oxide synthesis.
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Johnson, Fruzsina K., Federico J. Teran, Kay C. Coco et Robert A. Johnson. « L-NAME, but not Phenylephrine Enhances the Effects of Endogenous Carbon Monoxide on Vascular Tone in Vivo and in Vitro ». Hypertension 36, suppl_1 (octobre 2000) : 678. http://dx.doi.org/10.1161/hyp.36.suppl_1.678-c.

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4 Vascular endothelium and smooth muscle express heme oxygenase, which metabolizes heme to form biliverdin, free iron and carbon monoxide. Carbon monoxide promotes endothelium-independent vasodilation, but also inhibits nitric oxide formation. We previously found, that heme-derived carbon monoxide dilates isolated gracilis arterioles pretreated with a nitric oxide synthase inhibitor, N ω -nitro-L-arginine methyl ester (L-NAME), and lowers blood pressure in hypertensive rat models. This current study examines the hypothesis that nitric oxide modifies the effects of endogenous carbon monoxide on vascular tone both in vitro and in vivo . For this purpose in vitro studies were conducted on rat isolated pressurized first-order gracilis arterioles superfused with oxygenated (14%O 2 /5%CO 2 balanced with N 2 ) modified Krebs’ buffer (CaCl 2 1.4mmol/L). A heme oxygenase inhibitor, chromium mesoporphyrin (CrMP, 15μmol/L), constricted gracilis arterioles (Δ-32±6μm, t 1/2max =5min; n=6, P<.05). This effect was markedly amplified by pretreatment with 1mmol/L L-NAME (Δ-65±11μm; t 1/2max =5min; n=7; P<.05), but not by preconstriction with 100nmol/L phenylephrine (n=6; P>.05). In addition, in vivo studies were performed in anesthetized rats instrumented with flow probes and arterial catheters. In these animals the heme oxygenase inhibitor CrMP (45μmol/Kg,IP) had no significant effect on hindlimb resistance (Δ 2.3±0.1 mmHg/mL/min; n=5; P>.05). But, in animals pretreated with L-NAME (100mg/Kg), CrMP increased hindlimb resistance (Δ10.7 ± 0.7 mmHg/mL/min; n=4; P<.05). In contrast, in animals infused with PE (3μg/min) to increase blood pressure and vascular tone, CrMP had no effect on hindlimb resistance (Δ1.8±0.2 mmHg/mL/min; n=5; P>.05). This study shows the vascular actions of an inhibitor of endogenous carbon monoxide formation are enhanced by an inhibitor of nitric oxide synthase, but not by an alternative vasoconstrictor. These findings suggest the endogenous heme-heme oxygenase-carbon monoxide system exerts vasodilatory influences on basal vascular tone which are uniquely enhanced in the absence of nitric oxide synthesis.
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Gil, Stanisław, et Wojciech Bialik. « Modelling of Nitric Oxide Formation During Liquid Fuel Combustion ». Solid State Phenomena 246 (février 2016) : 279–83. http://dx.doi.org/10.4028/www.scientific.net/ssp.246.279.

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A liquid fuel combustion process, being a source of many environmentally hazardous pollutants (e.g. nitric oxides, carbon monoxide, polycyclic aromatic hydrocarbons, soot and sulphur oxides), is a subject of extensive research aimed at reduction of their emissions. A high temperature of the combustion air tends to increase the content of NOX in exhaust gases. Based on the experimental data and literature as well as using the CFD tools, a model of light fuel oil combustion has been developed with an emphasis on nitric oxide formation. The model adequately reflects the impact of geometry changes in the flow of combustion substrates on concentrations of carbon monoxide and nitric oxides in the chamber. The quantitative results obtained are comparable to the experimental data.
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van der Lee, Ivo, et Pieter Zanen. « Diffusion Capacity for Nitric Oxide and Carbon Monoxide ». Chest 126, no 5 (novembre 2004) : 1708–9. http://dx.doi.org/10.1378/chest.126.5.1708.

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Spillers, Jana G. « Carbon Monoxide or Nitric Oxide : Which Came First ? » Southern Medical Journal 104, no 1 (janvier 2011) : 9–10. http://dx.doi.org/10.1097/smj.0b013e3181fc1e25.

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Montuschi, Paolo, Sergei A. Kharitonov et Peter J. Barnes. « Exhaled Carbon Monoxide and Nitric Oxide in COPD ». Chest 120, no 2 (août 2001) : 496–501. http://dx.doi.org/10.1378/chest.120.2.496.

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Zavorsky, Gerald S. « Diffusion Capacity for Nitric Oxide and Carbon Monoxide ». Chest 126, no 5 (novembre 2004) : 1709–10. http://dx.doi.org/10.1016/s0012-3692(15)31396-9.

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Furusawa, Takehiko, Mikio Tsunoda, Motoki Tsujimura et Tadafumi Adschiri. « Nitric oxide reduction by char and carbon monoxide ». Fuel 64, no 9 (septembre 1985) : 1306–9. http://dx.doi.org/10.1016/0016-2361(85)90193-0.

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Hartsfield, Cynthia L. « Cross Talk Between Carbon Monoxide and Nitric Oxide ». Antioxidants & ; Redox Signaling 4, no 2 (avril 2002) : 301–7. http://dx.doi.org/10.1089/152308602753666352.

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Arngrim, Nanna, Henrik W. Schytz, Mette K. Hauge, Messoud Ashina et Jes Olesen. « Carbon monoxide may be an important molecule in migraine and other headaches ». Cephalalgia 34, no 14 (9 mai 2014) : 1169–80. http://dx.doi.org/10.1177/0333102414534085.

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Introduction Carbon monoxide was previously considered to just be a toxic gas. A wealth of recent information has, however, shown that it is also an important endogenously produced signalling molecule involved in multiple biological processes. Endogenously produced carbon monoxide may thus play an important role in nociceptive processing and in regulation of cerebral arterial tone. Discussion Carbon monoxide-induced headache shares many characteristics with migraine and other headaches. The mechanisms whereby carbon monoxide causes headache may include hypoxia, nitric oxide signalling and activation of cyclic guanosine monophosphate pathways. Here, we review the literature about carbon monoxide-induced headache and its possible mechanisms. Conclusion We suggest, for the first time, that carbon monoxide may play an important role in the mechanisms of migraine and other headaches.
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Thèses sur le sujet "Nitric monoxide"

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Palm, Jörgen. « Nasal airway nitric oxide : methodological aspects and influence of inflammation / ». Stockholm, 2004. http://diss.kib.ki.se/2004/91-7349-801-7/.

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Fiorin, Vittorio. « The interaction of nitric oxide with molecular adlayers adsorbed on Rh(111) ». Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368265.

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Watkins, Crystal Chanel. « Nitric oxide and carbon monoxide novel neurotransmitters in the enteric nervous system / ». Available to US Hopkins community, 2003. http://wwwlib.umi.com/dissertations/dlnow/308079.

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Demoncheaux, Eric Arthur Germain. « Physico-chemical properties of nitrogen monoxide : implication for its role as a vasodilator ». Thesis, Anglia Ruskin University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264045.

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Dunfield, Peter F. « Methane, nitrogen monoxide, and nitrous oxide fluxes in an organic soil ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0020/NQ36972.pdf.

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Park, Soo-Jin. « Catalytic Decomposition of Nitric Oxide and Carbon Monoxide Gases Using Nanofiber Based Filter Media ». University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1216931978.

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Adeyemo, Adedunni D. « Interaction of Metal Oxides with Carbon Monoxide and Nitric Oxide for Gas Sensing Applications ». The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1332475552.

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Crawford, Ian Stewart. « Catalytic reduction of nitric oxide by carbon monoxide or hydrogen over a Monel metal catalyst ». Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09EN/09enc899.pdf.

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Gilchrist, Ian Thomas. « The reduction of nitric oxide by carbon monoxide over excessively-exchanged copper ZSM-5 zeolite ». Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=26388.

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Nitric oxide (NO) is a major pollutant which is produced by the combustion of fossil fuels. Current three-way catalyst (TWC) technology, used for the reduction of NO in automobile exhaust, is effective only under stoichiometric or net reducing conditions which cause incomplete use of the fuel and CO and hydrocarbon pollution. Excessively-exchanged Cu-ZSM-5 zeolite was investigated as a catalyst for the reduction of NO in net oxidizing exhaust mixtures, which would allow for greater fuel efficiency and lower NO, CO and hydrocarbon emissions.
Cu-ZSM-5 powder was pelletized by extrusion and the activity for the reduction of NO by CO on the presence of O$ sb2$ was measured at temperatures of 200$ sp circ$C to 550$ sp circ$C and a space velocity of 450 hour$ sp{-1}.$ The activity of the Cu-ZSM-5 was compared to that of a TWC at 550$ sp circ$C. Under stoichiometric or net reducing conditions the conversion to N$ sb2$ over both catalysts was about 100%. Under net oxidizing conditions (when the equivalence ratio, $ lambda$, is greater than 1) the conversion decreased with increasing oxygen concentration for both catalysts, but the Cu-ZSM-5 was much more active; at $ lambda=1.3$ the conversion was 53% compared to 26%. The Cu-ZSM-5 was found to deactivate after 30 hours of use. The deactivation was accompanied by a change in the Cu-ZSM-5 structure, and a change in the chemical composition. The deactivation was not found to be a function of the composition, or of the oxidative nature of the conditioning gas used (20% O$ sb2,$ inert, or 20% CO). Regeneration of the Cu-ZSM-5 proved unsuccessful.
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Adamovich, Igor V. « Studies of nonequilibrium vibrational kinetics of carbon monoxide and nitric oxide in optical pumping experiments / ». The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu148784730905197.

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Livres sur le sujet "Nitric monoxide"

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D, Litton C., dir. Evaluation of a nitric-oxide-compensated carbon monoxide fire sensor. Washington, D.C. (810 7th St., N.W., Washington 20241-0001) : U.S. Dept. of the Interior, Bureau of Mines, 1993.

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M, Beck Sherwin, Bendura Richard J et Langley Research Center, dir. Field test to intercompare carbon monoxide, nitric oxide, and hydroxyl instrumentation at Wallops Island, Virginia. [Washington, D.C.] : National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1987.

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D, Wang Rui M., dir. Signal transduction and the gasotransmitters : NO, CO, and H2S in biology and medicine. Totowa, N.J : Humana Press, 2004.

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1962-, Marczin Nándor, et Yacoub Magdi, dir. Disease markers in exhaled breath : Basic mechanisms and clinical applications. Amsterdam : IOS Press, 2002.

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1962-, Marczin Nándor, dir. Disease markers in exhaled breath. New York : M. Dekker, 2003.

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Yoshikawa, Toshikazu. Gas biology research in clinical practice. Basel : Karger, 2011.

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service), ScienceDirect (Online, dir. Nitric oxide. San Diego, Calif : Elsevier/Academic Press, 2008.

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Ahmad, Z. Sintering and densification of nitride using a titanium monoxide binder. Manchester : UMIST, 1993.

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Les plaisirs secrets de la ménopause. Varennes, Québec : AdA, 2009.

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Lester, Packer, Hiramatsu Midori et Yoshikawa Toshikazu, dir. Free radicals in brain physiology and disorders. San Diego : Academic Press, 1996.

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Chapitres de livres sur le sujet "Nitric monoxide"

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Piiper, J., K. D. Schuster, M. Mohr, H. Schulz et M. Meyer. « Pulmonary Diffusing Capacity for Carbon Monoxide and Nitric Oxide ». Dans Oxygen Transport to Tissue X, 491–95. New York, NY : Springer US, 1988. http://dx.doi.org/10.1007/978-1-4615-9510-6_58.

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Radermacher, P., M. Matejovic et U. B. Brückner. « Liver Dysfunction : Nitric Oxide, Carbon Monoxide, and Reactive Oxygen Species ». Dans Mechanisms of Organ Dysfunction in Critical Illness, 301–12. Berlin, Heidelberg : Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-642-56107-8_21.

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Motterlini, Roberto. « Interaction of Hemoglobin with Nitric Oxide and Carbon Monoxide : Physiological Implications ». Dans Blood Substitutes, 74–98. Boston, MA : Birkhäuser Boston, 1996. http://dx.doi.org/10.1007/978-1-4612-4114-0_5.

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Deshmukh, Rohitas, Ranjit K. Harwansh, Nabamita Bandyopadhyay, Shantanu Bandopadhyay et Puneet Kumar. « Pharmacology of Gasotransmitters (Nitric Oxide and Carbon Monoxide) and Their Action ». Dans Frontiers in Pharmacology of Neurotransmitters, 579–617. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3556-7_17.

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Vannacci, Alfredo, Cosimo Marzocca, Giovanni Zagli, Simone Pierpaoli, Daniele Bani, Emanuela Masini et Pier Francesco Mannaioni. « Generation of Nitric Oxide and Carbon Monoxide Provide Protection Against Cardiac Anaphylaxis ». Dans Heme Oxygenase in Biology and Medicine, 431–35. Boston, MA : Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0741-3_38.

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Maulik, Nilanjana, Daniel T. Engelman, Masazumi Watanabe, Richard M. Engelman et Dipak K. Das. « Nitric oxide — a retrograde messenger for carbon monoxide signaling in ischemic heart ». Dans Biochemistry of Signal Transduction in Myocardium, 75–86. Boston, MA : Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-1275-8_9.

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Turnbull, Andrew V., et Catherine Rivier. « Cytokine Effects on Neuroendocrine Axes : Influence of Nitric Oxide and Carbon Monoxide ». Dans Neuroscience Intelligence Unit, 93–116. Boston, MA : Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-9695-0_6.

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Senn, G., D. Muigg, G. Denifl, A. Stamatovic, P. Scheier et T. D. Märk. « Electron attachment to nitric oxide clusters and electron impact ionization of carbon monoxide clusters ». Dans The European Physical Journal D, 149–52. Berlin, Heidelberg : Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-88188-6_29.

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Senn, G., D. Muigg, G. Denifl, A. Stamatovic, P. Scheier et T. D. Märk. « Electron attachment to nitric oxide clusters and electron impact ionization of carbon monoxide clusters ». Dans The European Physical Journal D, 159–62. Berlin, Heidelberg : Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-88188-6_31.

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Rivier, C. « Role of Nitric Oxide and Carbon Monoxide in Modulating the Activity of the Rodent Hypothalamic-Pituitary-Adrenal Axis ». Dans Frontiers of Hormone Research, 15–49. Basel : KARGER, 2001. http://dx.doi.org/10.1159/000061057.

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Actes de conférences sur le sujet "Nitric monoxide"

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ELKady, Ahmed M., San-Mou Jeng et Hukam Mongia. « The Role of the Interactions Between the Primary Jets and the Recirculation Zone of a Model Gas Turbine Combustor on Pollutant Emissions ». Dans ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82167.

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The present work investigates the effect of utilizing transverse air jets as well as its interactions with the recirculation zone on pollutant emission characteristics at different jet locations, jet mass ratios, and overall equivalence ratio. A multiple gas analyzer based on Fourier transform infrared (FTIR) spectroscopy is employed to measure emissions concentrations generated during combustion of Jet-A fuel in a swirl-cup assembly. The goal of this study is to provide more insight into nitric oxides and carbon monoxide production within the primary zone of a highly swirling combustion and methods to reduce its formation. The results reveal the possibility of injecting air into the recirculation zone without altering the flame stability. Besides, depending on the jet location and strength, nitric oxides as well as carbon monoxide can be reduced simultaneously. Placing the primary air jet just downstream of the rich fuel recirculation zone can lead to 40% reduction in both nitric oxides and carbon monoxide. While in the case of recirculation zones in the lean side of stoichiometry, reduction of nitric oxides can occur if the air jets are placed just 1 inch above the swirler exit.
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Belova, Y. I., et O. V. Yakovleva. « Analysis of the content of nitric oxide (II) metabolites rats of different ages ». Dans VIII Vserossijskaja konferencija s mezhdunarodnym uchastiem «Mediko-fiziologicheskie problemy jekologii cheloveka». Publishing center of Ulyanovsk State University, 2021. http://dx.doi.org/10.34014/mpphe.2021-27-29.

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Nitrogen monoxide is a gas transmitter that is an important intermediary in many organ systems, especially in the central nervous system. Nitrogen monoxide is involved in the relaxation of smooth vascular muscles, activation of neurons and responsible for the cytotoxicity of macrophages. The study of change nitrogen oxide metabolite concentration helps to determine its effects on human and animal organs. The study was carried out on laboratory animals of different ages. We used a spectrophotometric method to determine the level of metabolites based on the reaction of nitrites to the Griss reagent. We noted that the maximum level of metabolites NO was observed in newborn animals at the age of 4 days. In addition, metabolite concentrations decreased gradually by 14-15 days of life, reaching a minimum of 30 days Key words: nitrogen monoxide, rats, age, metabolites of nitrogen monoxide, spectrophotometry.
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Ikegami, T., K. Ogata, K. Ebihara, K. Nagira et T. Kai. « Soil treatment using ozone and nitric monoxide produced by pulsed discharge ». Dans The 33rd IEEE International Conference on Plasma Science, 2006. ICOPS 2006. IEEE Conference Record - Abstracts. IEEE, 2006. http://dx.doi.org/10.1109/plasma.2006.1707078.

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Sese, L., A. Beurnier, F. Schlemmer, Y. Uzunhan, W. Khamis, H. Nunes, Y. Coulibaly et al. « Pathophysiological insights from lung diffusing capacity for nitric monoxide (DLNO) after COVID-19 ». Dans ERS International Congress 2022 abstracts. European Respiratory Society, 2022. http://dx.doi.org/10.1183/13993003.congress-2022.2662.

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Gruhlke, Pascal, Fabian Proch, Andreas M. Kempf, Enric Illana Mahiques, Stefan Dederichs et Christian Beck. « Prediction of CO and NOx Pollutants in a Stratified Bluff Body Burner ». Dans ASME Turbo Expo 2017 : Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-63203.

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The major exhaust gas pollutants from heavy duty gas turbine engines are CO and NOx. The difficulty of predicting the concentration of these combustion products originates from their wide range of chemical time scales. In this paper, a combustion model that includes the prediction of the carbon monoxide and nitric oxide emissions is tested. Large eddy simulations (LES) are performed using a compressible code (OpenFOAM). A modified flamelet generated manifolds (FGM) approach is applied with a thickened flame approach (ATF) to resolve the flame on the numerical grid, with a flame sensor to ensure that the flame is only thickened in the flame region. For the prediction of the CO and NOx emissions, pollutant species transport equations and a second, CO based, progress variable are introduced for the flame burnout zone to account for slow chemistry effects. For the validation of the models, the Cambridge burner of Sweeney and Hochgreb [1, 2] is employed, as both carbon monoxide and nitric oxide [3] data is available.
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ADAMOVICH, IGOR, STEPHAN SAUPE, MICHAEL GRASSI, S. MACHERET et J. RICH. « Vibrational kinetics and ionization of carbon monoxide and nitric oxide in optical pumping experiments ». Dans 24th Plasma Dynamics, and Lasers Conference. Reston, Virigina : American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-3199.

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Jaafar, M. N. Mohd, A. I. M. Shaiful et A. M. Sahar. « Mitigation of nitric oxide and carbon monoxide emissions from burner system utilizing swirling flow ». Dans 3RD ELECTRONIC AND GREEN MATERIALS INTERNATIONAL CONFERENCE 2017 (EGM 2017). Author(s), 2017. http://dx.doi.org/10.1063/1.5002228.

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Morris, P. E., F. W. Taylor et J. Ballard. « Spectral Calibration of the Improved Stratospheric and Mesospheric Sounder ». Dans Optical Remote Sensing of the Atmosphere. Washington, D.C. : Optica Publishing Group, 1993. http://dx.doi.org/10.1364/orsa.1993.pd.10.

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The Improved Stratospheric and Mesospheric Sounder (ISAMS) is a limb-viewing infrared radiometer which measures thermal emission in 24 spectral bands, using both wideband (WB) and pressure modulator radiometer (PMR) techniques (Taylor, 1983). This enables the daily mapping over much of the Earth of temperature, the concentrations of 8 chemical species (water vapour, methane, ozone, nitric acid, nitrogen dioxide, nitric oxide, dinitrogen pentoxide, carbon monoxide) and aerosol opacity in the stratosphere and mesosphere. The instrument has eight separate focal planes, each consisting of a 4-element detector array, which are cooled by two mechanical coolers.
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Chambellan, Arnaud, Stephanie Dirou, Berangere Ricolleau, Julie Graveleau et Agathe Masseau. « The value of diffusing capacity for nitric oxide and carbon monoxide in sickle cell disease ». Dans Annual Congress 2015. European Respiratory Society, 2015. http://dx.doi.org/10.1183/13993003.congress-2015.pa516.

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Anderson, Thomas N., Rodolfo Barron-Jimenez, Jerald A. Caton, Robert P. Lucht, Sukesh Roy, Michael S. Brown, James R. Gord, Thomas Walther, Ian Critchley et Luis Flamand. « Diode-Laser-Based Sensor Measurements of Nitric Oxide and Carbon Monoxide in Combustion Exhaust Streams ». Dans ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47532.

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All-solid-state continuous-wave (cw) laser systems for ultraviolet (UV) absorption measurements of the nitric oxide (NO) molecule and mid-infrared (IR) absorption measurements of carbon monoxide (CO) were developed and demonstrated. For the NO sensor, 250 nW of tunable cw UV radiation at 226.8 nm is produced by sum-frequency-mixing in a beta-barium borate crystal. For the CO sensor, 2μW of tunable cw IR radiation at 4.5 μm is produced by difference-frequency mixing in a periodically-poled lithium niobate crystal. A tunable external-cavity diode laser (ECDL) provides one of the fundamental beams for both processes so that the wavelength of the generated UV/IR can be tuned over NO/CO absorption lines to produce a fully resolved absorption spectrum. The sensors were used for measurements in the exhaust stream of an operating auxiliary power unit (APU) gas turbine engine and a well-stirred reactor (WSR). During these tests, NO was measured in the exhaust at levels below 10 ppm. For measurements at levels above 20 ppm, the NO emission levels obtained using the new sensor agreed with the results of probe sampling chemiluminescent analyzer results to within 10%. A detection limit of 0.8 ppm of per meter path length at 1000 K is estimated for the NO sensor. Measurements with the CO sensor demonstrated an agreement with extractive probe sampling to within 15%. The estimated detection limit of the CO sensor is a few ppm per meter path length at 1000 K.
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