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Дисертації з теми "Dimethylsulfone"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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1

Borodina, Elena. "Bacterial metabolism of dimethylsulfone." Thesis, King's College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251998.

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2

Матрунчик, Ольга Леонідівна, Альона Геннадіївна Тульська, Світлана Германівна Дерібо та Сергій Анатолійович Лещенко. "Анодні процеси в електрохімічному синтезі метансульфонової кислоти". Thesis, Дослідно-видавничий центр Наукового товариства ім. Т. Г. Шевченка, 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/45473.

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Synthesis of methanesulfonic acid occurs during the course of an anode reaction – oxidation of dimethyl sulfoxide (DMSO). The application of the electrochemical method of oxidation DMSO allows you to control the process. The control parameters are: the potential of the anode, the catalytic activity of the anode material, the temperature of the electrolyte, promoters and inhibitors in the electrolyte. Voltamperic dependences of methanesulfonic acid from dilute solutions of DMSO with background with sulphate acid were contemplated. The emergence of a half-wave at cyclic voltammetric dependences

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3

Boden, Rich. "Metabolism of dimethylsulfide in the bacteria." Thesis, University of Warwick, 2009. http://wrap.warwick.ac.uk/2741/.

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Dimethylsulfide (DMS) is a volatile organosulfur compound which has been implicated as playing key roles in climate control and in the biogeochemical cycling of sulfur. Metabolism of DMS by Bacteria has been previously identified as an important sink of DMS in soils and in the marine environment; however, relatively little is known about the physiology or biochemistry of Bacteria that metabolism DMS. The key enzyme of DMS oxidation in Hyphomicrobium spp. – DMS monooxygenase - has been purified and characterised from H. sulfonivorans. It has been shown to be a two-componant monooxygenase, relat

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4

Heine, Christian Klaus. "NMR von rotatorischer und translatorischer Dynamik." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=96484916X.

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5

Bergeijk, Stefanie Anne van. "Production of dimethylsulfoniopropionate and dimethylsulfide in intertidal sediment ecosystems." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/83755.

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6

Shema, Richard A. "Correlation of satellite-detected aerosol characteristics and oceanic dimethylsulfide (DMS)." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/22994.

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7

Eisman, Greg A. "Cloud reflectance characteristics in the presence of variable dimethylsulfide (DMS) sources." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/26915.

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8

Lucas, Donald David 1969. "Mechanistic, sensitivity, and uncertainty studies of the atmospheric oxidation of dimethylsulfide." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29759.

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Анотація:

Thesis (Ph. D. in Atmospheric Chemistry)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2003.<br>Includes bibliographical references (p. 238-249).<br>The global-scale emissions and reactivity of dimethylsulfide (CH3SCH3, DMS) make it an integral component in the atmospheric sulfur cycle. DMS is rapidly oxidized in the atmosphere by a complex gas-phase mechanism involving many species and reactions. The resulting oxidized sulfur-bearing products are hygroscopic and interact with aerosols through condensation and secondary aerosol formation. Predicti

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9

Ledyard, Kathleen Mei. "Marine microbial production of dimethylsulfide from dissolved dimethylsulfoniopropionate by Kathleen Mei Ledyard." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/54359.

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10

Carnat, Gauthier. "Towards an understanding of the physical and biological controls on the cycling of dimethylsulfide (DMS) in Arctic and Antarctic sea ice." International Glaciological Society, 2013. http://hdl.handle.net/1993/23732.

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Анотація:

Little is known about the factors driving the cycle of the climate-active gas dimethylsulfide (DMS) and of its precursor the metabolite dimethylsulfoniopropionate (DMSP) in sea ice. To date, studies have focused on biotic factors, linking high DMSP concentrations to the high biomass of sympagic communities, and to physiological adaptations to the low temperatures and high salinities of the brine habitat. This thesis presents an approach integrating biotic and abiotic factors, investigating the influence of ice growth processes and brine dynamics on the DMS cycle. First, brine dynamics from gro

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11

Nemcek, Nina. "Membrane inlet mass spectrometry (M(MS) : a novel approach to the oceanic measurement of dimethylsulfide." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/32146.

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A novel technique, membrane inlet mass spectrometry (MIMS), was used to measure dimethylsulfide gas (DMS) and algal dimethylsulfoniopropionate (DMSPp) concentrations in two different marine ecosystems of the NE Pacific. In oceanic waters along Line P, DMS levels had been observed to be unusually high, yet particulate DMSP levels had not been extensively measured. DMSPp concentrations during 3 consecutive spring cruises ranged from 0.2-63.2 nM (mean 21.5 nM , s.d. 15.0 nM ) in the upper 50 m of the water column, and varied significantly with depth, across stations and between study years.

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12

Kröber, Eileen. "Environmental genomics and proteomics of plant-associated microbial dimethylsulfide degradation in a coastal salt marsh." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/81391/.

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Анотація:

The methylated sulfur compound dimethylsulfide (DMS) plays a major role in the biogeochemical sulfur cycle and atmospheric chemistry. Bacteria are a main sink for DMS in the global sulfur cycle and can utilise DMS as a sole carbon and energy source. This study investigated the diversity and activity of bacteria capable of DMS degradation and associated with the salt marsh plant Spartina anglica known to be a producer of the DMS precursor dimethylsulfoniopropionate (DMSP). Initially, it was shown that S. anglica is rich in DMSP throughout the entire seasonal cycle in the Stiffkey salt marsh pro

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13

Tallant, Thomas Clinton. "The Methylthiol:coenzyme M methyltransferase from methanosarcina barkeri; an enzyme of bethanogenesis from dimethylsulfide and methylmercaptopropionate /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488203857250408.

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14

Zaveri, Rahul A. "Development and Evaluation of a Comprehensive Tropospheric Chemistry Model for Regional and Global Applications." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30673.

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Анотація:

Accurate simulations of the global radiative impact of anthropogenic emissions must employ a tropospheric chemistry model that predicts realistic distributions of aerosols of all types. The need for a such a comprehensive yet computationally efficient tropospheric chemistry model is addressed in this research via systematic development of the various sub-models/mechanisms representing the gas-, aerosol-, and cloud-phase chemistries. The gas-phase model encompasses three tropospheric chemical regimes - background and urban, continental rural, and remote marine. The background and urban

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15

Kettle, Anthony J. "Extrapolations of the flux of dimethylsulfide, carbon monoxide, carbonyl sulfide, and carbon disulfide from the oceans." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0012/NQ59143.pdf.

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16

Robinson, Fiona. "Dimethylsulfate (DMS) protection footprinting of the interaction of cruciform DNA with a human cruciform binding protein (CBP)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0030/MQ64441.pdf.

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17

Robinson, Fiona. "Dimethylsulfate (DMS) protection footprinting of the interaction of cruciform DNA with a human cruciform binding protein (CBP)." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30736.

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Cruciforms are an alternative secondary structure which may be adopted by DNA containing inverted repeats, under conditions of adequate torsional strain. Inverted repeats are distributed, in a non-random fashion, throughout the genomes of prokaryotes and eucaryotes. Mounting evidence suggests that they are involved in the initiation of DNA replication. A structure-specific cruciform DNA binding protein (CBP) has previously been enriched from HeLa cells, and demonstrated to be a member of the 14-3-3 family of proteins. This thesis reports the dimethylsulfate (DMS) protection footprinting of thi

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18

Polsinelli, Gregory Anthony. "Bacterial generation of the anti-greenhouse gas dimethylsulfide kinetic, spectroscopic, and computational studies of the DMSO reductase system /." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1198876055.

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19

Jackson, Rebecca. "Coral reefs as a source of dimethylsulfide (DMS) and the influence on the atmosphere of the Great Barrier Reef." Thesis, Griffith University, 2022. http://hdl.handle.net/10072/415348.

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Coral reefs are important regional sources of natural atmospheric sulfur through stressinduced emissions of dimethylsulfide (DMS). Marine DMS is a source of non-sea salt sulfate, which can influence the microphysical properties of aerosols and low-level clouds. It has been hypothesised that emissions of DMS from coral reefs may influence aerosol nucleation and growth to cloud condensation nuclei, and increase the lifetime and albedo of low-level clouds to shade and cool the coral reef below. However, the source-strength of coral reefs to the atmospheric sulfur budget and the influence on aeros

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20

Bopp, Laurent. "Changements climatiques et biogéochimie marine : modélisation du Dernier Maximum Glaciaire et de l'Ere Industrielle." Paris 6, 2001. http://www.theses.fr/2001PA066397.

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21

Levine, Naomi Marcil. "Understanding the ocean carbon and sulfur cycles in the context of a variable ocean : a study of anthropogenic carbon storage and dimethylsulfide production in the Atlantic Ocean." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/57553.

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Анотація:

Thesis (Ph.D.)--Joint Program in Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2010.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student submitted PDF version of thesis.<br>Includes bibliographical references.<br>Anthropogenic activity is rapidly changing the global climate through the emission of carbon dioxide. Ocean carbon and sulfur cycles have the potential to i

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22

Speeckaert, Gaelle. "Variabilité des concentrations cellulaires phytoplanctoniques de diméthylsulfoniopropionate (DMSP) et de diméthylsulfoxyde (DMSO) en Baie Sud de la Mer du Nord." Doctoral thesis, Universite Libre de Bruxelles, 2018. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/278748.

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The eutrophication of the Southern Bight of the North Sea has been benefitting to the prymnesiophyte Phaeocystis globosa (P. globosa). This species is a known high dimethylsulfoniopropionate (DMSP) producer whose bloom accounts for 95% of spring phytoplankton biomass. An increase in DMS(P) and its oxidation product dimethylsulfoxide (DMSO) cellular contents have been frequently observed in cellular stress conditions. To test this, we have first analysed the natural distribution of DMS(P,O) cellular contents in the North Sea. Secondly, we have measured DMS(P,O) cellular contents in monospecific

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23

Cosme, Emmanuel. "Cycle du soufre des moyennes et hautes latitudes Sud dans un modèle de circulation générale atmosphérique." Phd thesis, Université Joseph Fourier (Grenoble), 2002. http://tel.archives-ouvertes.fr/tel-00705168.

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L'objectif de ce travail est de contribuer à la compréhension du cycle atmosphérique du soufre en Antarctique par l'utilisation d'un Modèle de Circulation Générale Atmosphérique (MCGA). Les versions "Antarctique" et "soufre" du MCGA LMD-ZT ("Laboratoire de Météorologie Dynamique- Zoom Traceurs") ont été fusionnées pour l'étude à haute résolution Antarctique du cycle du soufre dans les moyennes et hautes latitudes Sud. Une méthode de forçage "latéral" de la circulation atmosphérique antarctique par des analyses du Centre Européen de Prévision Météorologique à Moyen Terme (CEPMMT) a été spécifiq

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24

Hayashida, Hakase. "Modelling sea-ice and oceanic dimethylsulfide production and emissions in the Arctic." Thesis, 2018. https://dspace.library.uvic.ca//handle/1828/10486.

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Recent field observations suggest that the radiative forcing of aerosol and clouds in the Arctic may be seasonally regulated by the oceanic emissions of the climatically-important biogenic trace gas dimethylsulfide (DMS). However, the validity of the proposed argument is challenged by the limited spatio-temporal coverage of these earlier studies in this difficult-to-access region. In particular, little is known about the pan-Arctic distribution of the oceanic DMS emissions, its temporal variability, and the impacts of sea-ice biogeochemistry on these emissions. In this dissertation, I investig

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25

陳鈺芳. "Surface Characterization and Platelet Adhesion Studies of Plasma Polymerized of Trimethylphosphite, Triisopropylphosphite and Dimethylsulfate thin films." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/59456364910175502884.

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碩士<br>國立成功大學<br>化學工程研究所<br>85<br>Plasma surface modification has been shown to modify the surface properties without altering the physical properties of teh substrates. Meanwhile, sev eral studies have indicated the blood interactions with the artificial surfaces were altered with the addition of phosphorus - containing functionalities on the surface. Henceforth, plasma surface modification using trimethylphosphite. Henceforth, plasma surface modification using trimethylphosphite ((CH3O)3P) or triisopropylphosphite ((CH3)2CHO)3P) as the monomer source were investigated with an aim to improve

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26

Kettle, A. James. "Extrapolations of the flux of dimethylsulfide, carbon monoxide, carbonyl sulfide, and carbon disulfide from the oceans /." 2000. http://wwwlib.umi.com/cr/yorku/fullcit?pNQ59143.

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Анотація:

Thesis (Ph. D.)--York University, 2000. Graduate Programme in Chemistry.<br>Typescript. Includes bibliographical references (leaves 370-416). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pNQ59143

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27

Tesdal, Jan-Erik. "The spatial and temporal distribution of oceanic dimethylsulfide and its effects on atmospheric composition and aerosol forcing." Thesis, 2014. http://hdl.handle.net/1828/5676.

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Анотація:

The ocean emission and subsequent oxidation of dimethylsulfide (DMS) provides a source of sulfate in the atmosphere, potentially affecting the amount of solar radiation reaching the Earth's surface through both direct and indirect radiative effects of sulfate aerosols. DMS in the ocean can be quite variable with season and location, which in turn leads to high spatial and temporal variability of ocean DMS emissions. This study tested currently available observational and empirically-based climatologies of DMS concentration in the surface ocean. The exploration of the existing parameterizations

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28

Moreira, Cláudia Sofia Pombo da Fonseca. "Contribution to the chemoreception capacity of juvenile Loggerhead sea turtles (Caretta caretta, L.)." Master's thesis, 2010. http://hdl.handle.net/10400.13/393.

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Loggerhead sea turtle juveniles (Caretta caretta), pelagic stage, are found in waters of Madeira archipelago. Pelagic turtles are in the main growth phase of their life cycle and consequently higher energy needs. However, knowledge about the ecology of pelagic loggerhead sea turtles is still quite rudimentary, mainly about the mechanisms that lead them to find food in the vast ocean. Studies with other pelagic species, such as procellariiform birds, revealed that the olfactory system play an important role for the detection of feeding areas, through the detection of concentration peaks of DMS

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