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Littérature scientifique sur le sujet « Gaseous environment »

Auteur : Grafiati

Publié le 21 novembre 2023

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Articles de revues sur le sujet "Gaseous environment"

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Sokolov, G. M., A. V. Suvorov et A. T. Logunov. « TOXICOLOGY OF GASEOUS ENVIRONMENT IN DECOMPRESSION CHAMBER ». Marine Medicine 4, n^o 3 (7 octobre 2018) : 83–94. http://dx.doi.org/10.22328/2413-5747-2018-4-3-83-94.

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The paper presents basic concepts of toxicological problems under human containment in a closed hermetic hyperbaric volume basing on the literature data and our own long-term scientific and practical experience aimed at diving and diving medicine, development and testing of the decompression chambers. The paper describes the following essentials of the problem: gaseous atmospheric composition in closed hermetic volumes, evolution of exogenous gases in human organism under lowering in the chamber, evolving hazardous gaseous substances (HGS) in the closed volume, design average daily rate of HGS evolving, effect of conditions on HGS evolving, their maximum permissible concentrations, methods of СО2 and HGS removal in the chambers, and regulatory requirements. It is shown that the most of the modern existing chambers do not meet the regulatory requirements that may result in negative effects on human health. The ways to except the cases of human intoxication in the decompression chambers and systems are offered in the paper.

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KIMOTO, Yugo. « Space Environment : Measurement of the Gaseous Environment Surrounding Spacecraft ». Journal of the Vacuum Society of Japan 51, n^o 8 (2008) : 546–49. http://dx.doi.org/10.3131/jvsj2.51.546.

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Struk, P., T. Pustelny, K. Gołaszewska, M. A. Borysiewicz et A. Piotrowska. « Optical investigations of ZnO layers affected by some selected gases in the aspect of their application in optical gas sensors ». Bulletin of the Polish Academy of Sciences Technical Sciences 63, n^o 4 (1 décembre 2015) : 829–36. http://dx.doi.org/10.1515/bpasts-2015-0094.

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Abstract The paper presents the results of investigations of zinc oxide (ZnO) layers as a potential sensing material, being affected by certain selected gaseous environments. The investigations concerned the optical transmission through thin ZnO layers in wide spectral ranges from ultraviolet to the near infrared. The effect of the gaseous environment on the optical properties of zinc oxide layers with a thickness of ~ 400 nm was analyzed applying various technologies of ZnO manufacturing. Three kinds of ZnO layers were exposed to the effect of the gaseous environment, viz.: layers with relatively slight roughness (RMS several nm), layers with a considerable surface roughness (RMS some score of nm) and layers characterized by porous ZnO structures. The investigations concerned spectral changes in the transmission properties of the ZnO layers due to the effect of such gases as: ammonia (NH3), hydrogen (H2), and nitrogen dioxide (NO2) in the atmosphere of synthetic air. The obtained results indicated the possibility of applying porous ZnO layered structures in optical gas sensors.

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Feofilov, S. P., D. V. Arsentyev, A. B. Kulinkin, T. Gacoin, G. Mialon, R. S. Meltzer et C. Dujardin. « Gaseous environment-sensitive fluorescence of YAG:Ce3+ nanocrystals ». Journal of Applied Physics 107, n^o 6 (15 mars 2010) : 064308. http://dx.doi.org/10.1063/1.3327449.

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Hyllested, Jes Aerøe, G. Prabhu Sai Balasubramanian, Elisabetta Maria Fiordaliso, Murat Yesibolati, Kristian Mølhave et Marco Beleggia. « Electron Holography in Gaseous and Liquid Environment ». Microscopy and Microanalysis 26, S2 (30 juillet 2020) : 2488–89. http://dx.doi.org/10.1017/s1431927620021753.

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Ivanov, A. O., V. A. Petrov, A. Ye Yeroshenko, V. F. Belyaev et Yu E. Barachevsky. « Аssessment of admissibility of 100-day human sealing in normobariс gaseous environments, increasing fire safety of habitated hermoobjects ». Marine Medicine 8, n^o 2 (28 juillet 2022) : 77–87. http://dx.doi.org/10.22328/2413-5747-2022-8-2-77-87.

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OBGECTIVE: the assessment of admissibility of a human long-term stay in regulated normobaric hypoxic gaseous environments, increasing fire safety of habituated hermoobjects.MATERIALS AND METHODS: Men aged 25–32 (5 people) and 53 (1 person) were surveyed. Inside the test bench a gaseous environment was created with 19–18% vol. oxygen content — a continued stay room, or 17–16% vol.— periodical stay one (4 hours per day). The duration of the tests was 100 days. Once in 10 days there was the «regulation» (fast nitrogen input) of the gaseous environment with the decrease in oxygen concentration up to 15–12% vol., while the volunteers being in such conditions for 2 hours.RESULTS: During the whole period of 100-day sealing none of the volunteers experienced signs of somatic and mental health disorders; all the volunteers completed the testing program successfully.CONCLUSION: The results justify the admissibility of applying the technology of regulated normobaric hypoxic gaseous environments in the developed modes to increase fire safety of habituated hermoobjects, particularly in submarines.

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Sudarshan, T. S., et M. R. Louthan. « Gaseous environment effects on fatigue behaviour of metals ». International Materials Reviews 32, n^o 1 (janvier 1987) : 121–51. http://dx.doi.org/10.1179/095066087790150322.

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Mahapatra, Manoj K. « Review of corrosion of refractory in gaseous environment ». International Journal of Applied Ceramic Technology 17, n^o 2 (29 novembre 2019) : 606–15. http://dx.doi.org/10.1111/ijac.13418.

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HE, ChengMing, et Peng ZHANG. « Dynamics of binary droplet collision in gaseous environment ». SCIENTIA SINICA Physica, Mechanica & ; Astronomica 47, n^o 7 (6 juin 2017) : 070013. http://dx.doi.org/10.1360/sspma2017-00041.

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Tang, Xiaohu, et David C. Joy. « Quantitative measurements of charging in a gaseous environment ». Scanning 25, n^o 4 (6 décembre 2006) : 194–200. http://dx.doi.org/10.1002/sca.4950250406.

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Thèses sur le sujet "Gaseous environment"

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Bremer, Malcolm Neal. « The gaseous environment of quasars ». Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281988.

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Chaves, Tara A. « Neutral hydrogen in NGC 2613, probing the dynamic gaseous environment of spiral galaxies ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ63280.pdf.

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Torresi, Eleonora <1981&gt. « The gaseous environment of radio galaxies : a new perspective from high-resolution x-ray spectroscopy ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amsdottorato.unibo.it/3820/1/Torresi_Eleonora_tesi.pdf.

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It is known that massive black holes have a profound effect on the evolution of galaxies, and possibly on their formation by regulating the amount of gas available for the star formation. However, how black hole and galaxies communicate is still an open problem, depending on how much of the energy released interacts with the circumnuclear matter. In the last years, most studies of feedback have primarily focused on AGN jet/cavity systems in the most massive galaxy clusters. This thesis intends to investigate the feedback phenomena in radio--loud AGNs from a different perspective studying isolated radio galaxies, through high-resolution spectroscopy. In particular one NLRG and three BLRG are studied, searching for warm gas, both in emission and absorption, in the soft X-ray band. I show that the soft spectrum of 3C33 originates from gas photoionized by the central engine. I found for the first time WA in 3C382 and 3C390.3. I show that the observed warm emitter/absorbers is not uniform and probably located in the NLR. The detected WA is slow implying a mass outflow rate and kinetic luminosity always well below 1% the L(acc) as well as the P(jet). Finally the radio--loud properties are compared with those of type 1 RQ AGNs. A positive correlation is found between the mass outflow rate/kinetic luminosity, and the radio loudness. This seems to suggest that the presence of a radio source (the jet?) affects the distribution of the absorbing gas. Alternatively, if the gas distribution is similar in Seyferts and radio galaxies, the M(out) vs rl relation could simply indicate a major ejection of matter in the form of wind in powerful radio AGNs.

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Torresi, Eleonora <1981&gt. « The gaseous environment of radio galaxies : a new perspective from high-resolution x-ray spectroscopy ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amsdottorato.unibo.it/3820/.

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It is known that massive black holes have a profound effect on the evolution of galaxies, and possibly on their formation by regulating the amount of gas available for the star formation. However, how black hole and galaxies communicate is still an open problem, depending on how much of the energy released interacts with the circumnuclear matter. In the last years, most studies of feedback have primarily focused on AGN jet/cavity systems in the most massive galaxy clusters. This thesis intends to investigate the feedback phenomena in radio--loud AGNs from a different perspective studying isolated radio galaxies, through high-resolution spectroscopy. In particular one NLRG and three BLRG are studied, searching for warm gas, both in emission and absorption, in the soft X-ray band. I show that the soft spectrum of 3C33 originates from gas photoionized by the central engine. I found for the first time WA in 3C382 and 3C390.3. I show that the observed warm emitter/absorbers is not uniform and probably located in the NLR. The detected WA is slow implying a mass outflow rate and kinetic luminosity always well below 1% the L(acc) as well as the P(jet). Finally the radio--loud properties are compared with those of type 1 RQ AGNs. A positive correlation is found between the mass outflow rate/kinetic luminosity, and the radio loudness. This seems to suggest that the presence of a radio source (the jet?) affects the distribution of the absorbing gas. Alternatively, if the gas distribution is similar in Seyferts and radio galaxies, the M(out) vs rl relation could simply indicate a major ejection of matter in the form of wind in powerful radio AGNs.

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Merlin, Jérémie. « Study of long-term sustained operation of gaseous detectors for the high rate environment in CMS ». Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAE005/document.

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Le spectromètre à muons de CMS doit permettre l'identification rapide et efficace des muons produits lors des collisions proton-proton au LHC. Cependant, à cause d'un environnement de détection extrême, seules les chambres à pistes cathodiques équipent actuellement les bouchons de CMS. Cette faiblesse dans le système de détection pourrait devenir problématique après l'amélioration du LHC. L'augmentation du taux de particules dans les bouchons va dégrader les performances du système de déclenchement L1 ainsi que l'efficacité de sélection des phénomènes physiques intéressants. Le but du programme d'amélioration de CMS est de maintenir le taux de déclenchement L1 tout en gardant une efficacité de sélection maximale. La collaboration CMS GEM propose d'équiper les régions vacantes des bouchons avec des détecteurs basés sur la technologie d'amplification des électrons dans un gaz (GEM), appelés GE1/1. Le sujet de thèse proposé par la collaboration CMS GEM a pour but de justifier le choix de la technologie GEM pour l'amélioration de CMS. Trois projets ont été suivis pendant la thèse. La première partie du projet de thèse consistait à mesurer précisément les caractéristiques fondamentales et les performances de détection des détecteurs triple-GEM produit par la technique simple-masque. Ces éléments sont essentiels pour s'assurer que les détecteurs GE1/1 pourront fonctionner en toute sécurité dans l'environnement des bouchons de CMS. Le deuxième projet consistait à prouver que les excellentes performances des détecteurs GE1/1 ne vont pas se dégrader pendant leur utilisation dans CMS. Cette étape comprend l'étude du fonctionnement à long terme des détecteurs GE1/1, en particulier le phénomène de vieillissement, qui inclue tous les processus physiques et chimiques qui provoquent la dégradation graduelle et permanente des performances de détection. Plusieurs tests de vieillissement ont été menés dans des zones d'irradiations spécifiques au CERN pour reproduire un minimum de 10 ans de fonctionnement réel dans l'environnement de CMS après la montée en puissance du LHC. Enfin, les excellentes propriétés mesurées lors de la phase de R&D ont permis de valider la technologie triple-GEM, qui fut ensuite approuvée par la collaboration CMS et le comité du LHC. La production de 144 grands détecteurs GE1/1 sera partagée entre différents sites de production à travers le monde. Le troisième projet de thèse fut donc le développement des principales étapes du contrôle qualité nécessaire pour assurer une production uniforme et une même qualité pour tous les détecteurs GE1/1
The muon system of CMS aims to provide an efficient and fast identification of the muons produced in the proton-proton collisions. However, the forward region of the end-caps is only instrumented with Cathode Strip Chambers. This lack of redundancy will be problematic after the high-luminosity upgrade of the LHC (HL-LHC), for which the increase of the background rate would degrade the Level-1 trigger performance and thus the selection of interesting physics channels. The goal of the CMS muon upgrade is to maintain the L1 trigger rate with maximum selection efficiency in order to fully exploit the HL-LHC. The CMS GEM Collaboration has proposed to instrument the vacant highetaregion of the muon end-caps with Gas Electron Multiplier (GEM) detectors, called GE1/1chambers.The Ph.D. subject proposed by the CMS GEM Collaboration aims to demonstrate that the GE1/1technology is the most suitable choice for the upgrade of the muon end-caps. Three main researchprojects were conducted in this context. The first project included the precise measurement of the fundamental characteristics and the detection performance of the triple-GEM detectors produced with the single-mask technique. Those characteristics are essential to ensure that the detectors can operate in the forward region of CMS. The second project was focused on the long-term operation of GE1/1 detectors, in particular the study of the aging phenomenon, which includes all the processes that lead to a significant and permanent degradation of the performance of the detectors. Several aging tests were performed at the CERN irradiation facilities to prove that the GE1/1 chambers can operate during at least 10 yearsat HL-LHC without suffering from performance losses. The excellent properties measured during the R&D phase led to the approval of the GE1/1 project by the CMS Collaboration. The third project, conducted in the framework of the mass production,consisted of developing of the main steps of the Quality Control of the GE1/1 chambers

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Zhang, Yunbo. « Effect of microstructure on oxidative wear of a dual-phase low-alloy steel under different gaseous atmospheres, sliding speeds, and oxidation temperatures ». Electronic Thesis or Diss., Compiègne, 2022. http://www.theses.fr/2022COMP2699.

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Le comportement tribologique des aciers à double phase a été étudié aux effets de différentes fractions volumiques de martensite (MVF), d'environnements gazeux et de vitesses de glissement, à l'aide d'un tribomètre à bille sur disque, dans des conditions de charge constante et de glissement par friction sèche. Par ailleurs, le comportement tribologique des couches d'oxyde formées à différentes températures et MVF a été étudié par nanoindentation et par des expériences de grattage. Les expériences de glissement à sec ont démontré qu'une MVF plus faible, des vitesses de glissement plus élevées et des environnements CO2 réduisent considérablement les taux d'usure en raison d'une meilleure oxydation ainsi que de la formation de couches d'oxyde protectrices sur les surfaces usées. Les essais de grattage des couches d'oxyde ont montré que le taux d'usure des couches d'oxyde de même composition diminuait à mesure que le MVF augmentait. La résistance à l'usure de la couche d'oxyde dominée par FeO est la plus mauvaise. Dans les mêmes conditions, la couche d'oxyde formée sur la martensite présente une résistance spécifique à l'usure plus élevée que celle formée sur la ferrite
The tribological behavior of dual-phase steels was investigated at the effects of different martensite volume fraction (MVF), gaseous environments, and sliding velocities, using a ball-on-disk tribometer, under constant load and dry friction sliding conditions. Furthermore, the tribological behavior of oxide layers formed at different temperatures and MVF was investigated by nanoindentation and scratching tests. Dry sliding experiments demonstrated that lower MVF, higher sliding velocities, and CO2 environments significantly reduce wear rates due to improved oxidation as well as the formation of protective oxide layers on the worn surfaces. Scratch tests of oxide layers revealed that the wear rate of same composition oxide layers decreased with increasing MVF. The wear resistance of the FeO-dominated oxide layer is the worst. Under the same conditions, the oxide scale formed on martensite has higher specific wear resistance than that formed on ferrite

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Wilman, Richard John. « The gaseous environments of powerful active objects ». Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.622002.

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RAGUSA, ENRICO. « THE EVOLUTION OF BINARY SYSTEMS IN GASEOUS ENVIRONMENTS ». Doctoral thesis, Università degli Studi di Milano, 2018. http://hdl.handle.net/2434/604177.

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Systems where a binary, that is two gravitationally bound objects orbiting their centre of mass, interacts with the surrounding gas or dust are extremely common in the Universe and involve a wide variety of different astrophysical objects (star + star, black hole + black hole, star + planet, or planet + moon). Among them, protoplanetary systems and black hole binaries (BHBs) are currently capturing the attention of the scientific community. Despite their very different nature and EM appearance, both protoplanetary and BHB systems are characterized by the presence of a gaseous accretion disc surrounding the binary. As a consequence, the dynamics of these systems is very similar and can be described in one unique theoretical framework: the disc-satellite interaction theory. This project is meant to deepen our knowledge of the theory of circumbinary discs, approaching it in a multidisciplinary way from both the protoplanetary and the BHBs perspective.

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Maheras, Anastasia Francis. « Elemental and reactive gaseous mercury deposition and diurnal cycles over terrestrial environments ». Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/114365.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2011.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 88-93).
The atmospheric component of the global biogeochemical mercury cycle was studied to determine the mechanisms behind diurnal trends and amplitudes in elemental and reactive gaseous mercury concentrations over terrestrial environments. This analysis was done using the 3D GEOS-Chem chemical transport model and the creation of a simple one-box model. Mercury is a significant neurotoxin for humans and other species that has been addressed in the policy realm on both national and international levels. Being able to model atmospheric mercury processes correctly is an important part of regulation and policy drafting. GEOS-Chem model results were compared with Weiss-Penzias et al. [2009] measurements for three Nevada, USA sites. The magnitude of elemental mercury concentrations differed by 0.07-0.2 ng/m3 , with GEOS-Chem underestimating concentrations due to an under-representation of mercury emissions at naturally enriched sites. The amplitude of reactive gaseous mercury diurnal variations differed by a factor of 3-4, with GEOS-Chem underestimating the diurnal trend. Based on the diurnal nature of this error, it is hypothesized that GEOS-Chem under represents the magnitude of elemental mercury emissions, the amount of oxidation occurring in the atmosphere, and the scale of entrainment from the free troposphere.
by Anastasia F. Maheras.
S.B.

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O'Driscoll, Nelson James. « Dissolved gaseous mercury dynamics and mercury volatilization in freshwater lakes ». Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/29035.

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This thesis examines the production and distribution of dissolved gaseous mercury (DGM) in freshwater ecosystems and its relationship to mercury volatilization. The importance of volatilization was assessed within a multidisciplinary mercury mass balance for Big Dam West Lake (BDW) Kejimkujik Park, Nova Scotia. The magnitude of volatilization was found to be approximately double the direct wet deposition over lake and wetlands, and 27% of the direct wet deposition to the terrestrial catchment. Over the entire basin area the mass of mercury volatilized is 46% of the mass deposited by wet deposition. A new method of continuous (5 minute) DGM analysis was developed and tested. The detection limit for DGM was 20 fmol L-1 with 99% removal efficiency. Control experiments showed that there was no interference due to methyl mercury, which is present in similar concentrations to DGM. Experiments comparing continuous DGM analysis with discrete DGM analysis showed that the results are not significantly affected by typical variations in water temperature (4--30°C), oxidation-reduction potential (135--355 mV), dissolved organic carbon (4.5--10.5 mg L-1), or pH (3.5--7.8). The continuous analysis was within 4.5% of the discrete analysis when compared across 12 samples analyzed in triplicate. Diurnal patterns for dissolved gaseous mercury (DGM) and mercury flux were measured (using this new DGM method and a Teflon flux chamber method) in two lakes with contrasting dissolved organic carbon (DOC) concentrations in Kejimkujik Park, Nova Scotia. Consistently higher DGM concentrations were found in the high DOC lake as compared to the low DOC lake. Cross-correlation analysis indicated that DGM dynamics changed in response to solar radiation with lag-times of 65 and 90 minutes. An examination of current mercury flux models using this quantitative data indicated some good correlations between the data and predicted flux (r ranging from 0.27 to 0.83) but generally poor fit (standard deviation of residuals ranging from 0.97 to 3.38). This research indicates that DOC and wind speed may play important roles in DGM and mercury flux dynamics that have not been adequately accounted for in current predictive models. The distribution of DGM in the water columns of shallow and deep freshwater lakes was investigated in Lake Ontario and several small freshwater lakes. When DGM concentrations were expressed on an areal basis, DGM concentrations above the thermocline in Lake Ontario average 1.5 ng m-2 and in small freshwater lakes it ranged between 0.1 and 0.8 ng m -2. Further, it was demonstrated that the majority of DGM in large freshwater lakes such as Lake Ontario exists below the thermocline where photochemical oxidation and reduction processes cannot occur. The depth profiles indicate that vertical mixing in the water column may alter the DGM concentration in the upper epilimnion, and that turn over in deep lakes may result in a transfer of large concentrations of DGM from the hypolimnion into the epilimnion. In addition, the results indicate that microbial processes may be an important factor regulating DGM in the water column of freshwater lakes, particularly in the hypolimnion. (Abstract shortened by UMI.)

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Livres sur le sujet "Gaseous environment"

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Alscher, Ruth G., et Alan R. Wellburn, dir. Plant Responses to the Gaseous Environment. Dordrecht : Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1294-9.

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Kroneck, Peter M. H., et Martha E. Sosa Torres, dir. The Metal-Driven Biogeochemistry of Gaseous Compounds in the Environment. Dordrecht : Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9269-1.

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G, Alscher Ruth, Wellburn Alan 1940- et International Symposium on Air Pollutants and Plant Metabolism (3rd : 1992 : Blacksburg, Va.), dir. Plant responses to the gaseous environment : Molecular, metabolic, and physiological aspects. London : Chapman & Hall, 1994.

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American Society of Heating, Refrigerating and Air-Conditioning Engineers., dir. Particulate and gaseous contamination in datacom environments. Atlanta, GA : American Society of Heating, Refrigerating, and Air-Conditioning Engineers, 2009.

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Christophorou, Loucas G. Gaseous Dielectrics VIII. Boston, MA : Springer US, 1998.

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O, Nriagu Jerome, dir. Gaseous pollutants : Characterization and cycling. New York : Wiley, 1992.

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7

Cardarelli, John. Portsmouth Gaseous Diffusion Plant Piketon, Ohio. [Atlanta, Ga.?] : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1998.

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Cardarelli, John. Portsmouth Gaseous Diffusion Plant Piketon, Ohio. [Atlanta, Ga.?] : U.S. Dept. of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1998.

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Chmielewski, Andrzej G. Electron beam gaseous pollutants treatment. Warszawa : Instytut Chemii i Techniki Jądrowej, 1999.

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Lukanin, Aleksandr. Environmental Engineering : Processes and gas emissions purification devices. ru : INFRA-M Academic Publishing LLC., 2017. http://dx.doi.org/10.12737/24376.

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The tutorial adequately considered the currently existing methods of protection of the air basin from industrial waste gases of chemical, petrochemical, microbiological, pharmaceutical and related industries. The material is based on a thorough analysis of the treatment methods commonly used, the most dangerous substances that enter the Earth´s atmosphere with the exhaust gases of large enterprises, also provides guidance on the use of gas-cleaning equipment emissions in the industry. Compliant with the Federal state educational standard of the latest generation of higher education. The book is intended for students of technical colleges enrolled in areas of training "Technosphere Safety" and "Environmental Engineering" (training profiles: "Environmental Engineering localities", "Engineering protection of the environment of industrial enterprises" and "Protection of the environment and resources"), as well as for engineering technical staff, graduate students and professors.

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Chapitres de livres sur le sujet "Gaseous environment"

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Kunhardt, E. E., S. Barone, J. Bentson et S. Popovic. « Electrical Breakdown in the Space Environment ». Dans Gaseous Dielectrics VI, 61–71. Boston, MA : Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3706-9_8.

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Kumar, Dhananjay, et Avinash Kumar Agarwal. « Laser Ignition Technology for Gaseous Fuelled Automotive Engines ». Dans Energy, Environment, and Sustainability, 143–63. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0335-1_10.

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Kanatharana, Proespichaya, et Wiwat Pahina. « Some Gaseous Pollutants in Nakorn Sri Thammarat ». Dans Fourth Symposium on our Environment, 341–47. Dordrecht : Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-2664-9_32.

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Kawamura, T., M. Meguro, H. Hama et T. Yamagiwa. « Industrial Outlook : How to Reduce SF6 Use and Emission — Various Aggressive Approaches to Realize Less SF6 Environment ». Dans Gaseous Dielectrics X, 475–84. Boston, MA : Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-8979-6_61.

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Pegau, B., et H. G. Schecker. « Gaseous Diffusion of Volatile Organic Compounds Through Soil and Covering Systems ». Dans Soil & ; Environment, 401–2. Dordrecht : Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0415-9_102.

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Gucinski, Hermann. « The potential effect of global climate change on terrestrial vegetation ». Dans Plant Responses to the Gaseous Environment, 1–20. Dordrecht : Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1294-9_1.

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Hite, Daniel R. C., et William H. Outlaw. « Regulation of ion transport in guard cells ». Dans Plant Responses to the Gaseous Environment, 181–94. Dordrecht : Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1294-9_10.

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Owens, Thomas G. « In vivo chlorophyll fluorescence as a probe of photosynthetic physiology ». Dans Plant Responses to the Gaseous Environment, 195–218. Dordrecht : Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1294-9_11.

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Baker, Neil R., Gui-ying Nie et Milica Tomasevic. « Responses of photosynthetic light- use efficiency and chloroplast development on exposure of leaves to ozone ». Dans Plant Responses to the Gaseous Environment, 219–38. Dordrecht : Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1294-9_12.

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Pell, Eva J., L. G. Landry, N. A. Eckardt et R. E. Glick. « Air pollution and RubisCO : effects and implications ». Dans Plant Responses to the Gaseous Environment, 239–54. Dordrecht : Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1294-9_13.

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Actes de conférences sur le sujet "Gaseous environment"

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Sandov, Ognyan, Iliyana Naydenova et Rositsa Velichkova. « Primary gaseous emissions during biomass combustion ». Dans 2021 6th International Symposium on Environment-Friendly Energies and Applications (EFEA). IEEE, 2021. http://dx.doi.org/10.1109/efea49713.2021.9406230.

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Sandrine ESPAGNOL, Laurence LOYON, Fabrice GUIZIOU, Paul ROBIN, Isabelle BOSSUET et Mélynda HASSOUNA. « Measuring Gaseous Emissions from Stored Pig Slurry ». Dans Livestock Environment VIII, 31 August - 4 September 2008, Iguassu Falls, Brazil. St. Joseph, MI : American Society of Agricultural and Biological Engineers, 2008. http://dx.doi.org/10.13031/2013.25500.

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Schläppi, Bernhard, Kathrin Altwegg, Hans Balsiger, Ursina Calmonte, Myrtha Hässig, Lukas Hofer, Annette Jäckel et al. « Characterization of the gaseous spacecraft environment of Rosetta by ROSINA ». Dans 3rd AIAA Atmospheric Space Environments Conference. Reston, Virigina : American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-3822.

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Uy, O., R. Benson, R. Erlandson, M. Boies, D. Silver, J. Lesho, G. Galica et al. « MSX contamination instruments - Gaseous and particulate environment measurements versus predictions ». Dans 35th Aerospace Sciences Meeting and Exhibit. Reston, Virigina : American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-315.

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Stamenic, Mirjana, Tomislav Simonovic et Nikola Tanasic. « Efficient Technology for Combustion of Low Calorific Gaseous Fuels ». Dans 2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA). IEEE, 2018. http://dx.doi.org/10.1109/efea.2018.8617090.

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Side, J., S. Kerr et R. Gamblin. « An Estimation of the Energy Consumption and Gaseous Emissions Associated with Heather Platform Decommissioning Options ». Dans SPE/UKOOA European Environment Conference. Society of Petroleum Engineers, 1997. http://dx.doi.org/10.2118/37858-ms.

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Azhdast, MOHAMMAD HOSSEIN, Hans Joachim Eichler, Klaus-Dieter Lang, Veronika Glaw et Martin Kossatz. « Laser-induced forward transfer of aluminium particles in different gaseous environment ». Dans Compact EUV & X-ray Light Sources. Washington, D.C. : OSA, 2018. http://dx.doi.org/10.1364/euvxray.2018.jt5a.21.

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Zheng, Tingsen, et Nian-Zhong Chen. « Fatigue Crack Propagation Prediction for Pipeline Steel Under Gaseous Hydrogen Environment ». Dans ASME 2023 42nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/omae2023-104210.

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Abstract Hydrogen embrittlement (HE) refers to the irreversible damage caused by hydrogen diffused in the metal lattice with the metal material itself or other chemical elements in the matrix, which may lead to fatigue failure. Therefore, for safety reasons, it is of great significance to investigate the impact of HE on the fatigue strength of pipeline steel under gaseous hydrogen environment. Cyclic cohesive zone model (CCZM) is one of the potential methods for simulating the hydrogen assisted crack (HAC). A fatigue crack propagation simulation for API X52 pipeline steel based on a modified CCZM under gaseous hydrogen environment is performed in this paper. The modified CCZM is proposed where not only the degradation of cohesive strength but also the degradation of accumulated cohesive length is considered in order to clarify the impact of HE on the fatigue crack propagation. The degradation of cohesive strength and that of accumulated cohesive length is expressed with piece-wise linear relationships. The results of simulation are then compared with test results to demonstrate the capability of the proposed CCZM. The proposed model tends to provide a useful reference for further research on the simulation for HAC by CCZM.

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Smith, Allen C. « Radiation Heat Transfer Environment in Fire and Furnace Tests of Radioactive Materials Packages ». Dans ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77017.

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The Hypothetical Accident Conditions (HAC) sequential tests of radioactive materials (RAM) packages includes a thermal test to confirm the ability of the package to withstand a transportation fire event. The test specified by the regulations (10 CFR 71) consists of a 30 minute, all engulfing, hydrocarbon fuel fire, with an average flame temperature of at least 800°C. The requirements specify an average emissivity for the fire of at least 0.9, which implies an essentially black radiation environment. Alternate tests which provide equivalent total heat input at the 800°C time averaged environmental temperature may also be employed. When alternate tests methods are employed, such as furnace or gaseous fuel fires, the equivalence of the radiation environment may require justification. The effects of furnace and open confinement fire environments are compared with the regulatory fire environment, including the effects of gases resulting from decomposition of package overpack materials. The results indicate that furnace tests can produce the required radiation heat transfer environment, i.e., equivalent to the postulated pool fire. An open enclosure, with transparent (low emissivity) fire does not produce an equivalent radiation environment.

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Li, Yuanyuan, William Roberts et Michael Brown. « Gaseous transport properties measurements in high pressure environment by transient grating spectroscopy ». Dans 39th Aerospace Sciences Meeting and Exhibit. Reston, Virigina : American Institute of Aeronautics and Astronautics, 2001. http://dx.doi.org/10.2514/6.2001-849.

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Rapports d'organisations sur le sujet "Gaseous environment"

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Caro Rodriguez, Guillermo, et María Dolores Fernández Ramos. Chemoresistive sensor based on a conductive polymer for gaseous acids and bases in the environment. Fundación Avanza, mai 2023. http://dx.doi.org/10.60096/fundacionavanza/1852022.

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A conducting polymer with good characteristics in terms of robustness, adherence, and physical properties was developed. Based on this conductor, a chemoresistive sensor was designed to determine gaseous acids and bases in the environment

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Wada, Y., R. Ishigaki, Y. Tanaka et K. Ohnishi. DTRS-3878-HEELAS Hydrogen Environment Embrittlement of Low Alloy Steel at Room Temperature. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), janvier 1998. http://dx.doi.org/10.55274/r0011860.

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To verify the safety application and use of Cr-Mo steel for the high-pressure hydrogen equipment, tensile, fatigue, and crack growth tests of JIS-G4105-1979 SCM435 and 440 steel under 45MPa high-pressure hydrogen at room temperature were conducted. There were no significant differences in tensile deformation behaviors between the air environment and 45MPa hydrogen until the maximum load point. However, the hydrogen tested specimen broke with less ductility accompanied by many surface crack on the specimen surface which is caused by the specimen machining. The scatter of ductility was observed due to the specimen surface preparation conditions. As a result, reduction of ductility in the gaseous hydrogen environment is caused not only by the specimen machining effect but also by the presence of non-metallic inclusion at the surface.

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Horak, C. M. Paducah Gaseous Diffusion Plant environmental report for 1992. Office of Scientific and Technical Information (OSTI), septembre 1993. http://dx.doi.org/10.2172/10191514.

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Turner, J. W., dir. Portsmouth Gaseous Diffusion Plant environmental report for 1989. Office of Scientific and Technical Information (OSTI), octobre 1990. http://dx.doi.org/10.2172/6161110.

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Counce-Brown, D., dir. Portsmouth Gaseous Diffusion Plant Environmental report for 1990. Office of Scientific and Technical Information (OSTI), septembre 1991. http://dx.doi.org/10.2172/5175837.

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Counce-Brown, D., dir. Paducah Gaseous Diffusion Plant Environmental report for 1990. Office of Scientific and Technical Information (OSTI), septembre 1991. http://dx.doi.org/10.2172/5175844.

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Turner, J. W., dir. Paducah Gaseous Diffusion Plant environmental report for 1989. Office of Scientific and Technical Information (OSTI), octobre 1990. http://dx.doi.org/10.2172/6290164.

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Rogers, J. G., et T. G. Jett. Paducah Gaseous Diffusion Plant site environmental report for 1988. Office of Scientific and Technical Information (OSTI), mai 1989. http://dx.doi.org/10.2172/7267297.

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Horak, C. M. Portsmouth Gaseous Diffusion Plant annual site environmental report for 1993. Office of Scientific and Technical Information (OSTI), novembre 1994. http://dx.doi.org/10.2172/43773.

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Author, Not Given. Liquefied Gaseous Fuels Spill Test Facility program : Eleven additional chemicals : Environmental Assessment. Office of Scientific and Technical Information (OSTI), décembre 1989. http://dx.doi.org/10.2172/7145214.

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