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Relevant bibliographies by topics / Analyse GCxGC

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Academic literature on the topic 'Analyse GCxGC'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "Analyse GCxGC"

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Hamilton, J. F., P. J. Webb, A. C. Lewis, J. R. Hopkins, S. Smith, and P. Davy. "Partially oxidised organic components in urban aerosol using GCXGC-TOF/MS." Atmospheric Chemistry and Physics 4, no. 5 (2004): 1279–90. http://dx.doi.org/10.5194/acp-4-1279-2004.

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Abstract. Partially oxidised organic compounds associated with PM2.5 aerosol collected in London, England, have been analysed using direct thermal desorption coupled to comprehensive gas chromatography-time of flight mass spectrometry (GCXGC-TOF/MS). Over 10000 individual organic components were isolated from around 10µg of aerosol material in a single procedure and with no sample pre-treatment. Chemical functionalities observed using this analytical technique ranged from alkanes to poly-oxygenated species. The chemical band structures commonly used in GCXGC for group type identifications over

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Hamilton, J., P. Webb, A. Lewis, J. Hopkins, S. Smith, and P. Davy. "Partially oxidised organic components in urban aerosol using GCXGC-TOF/MS." Atmospheric Chemistry and Physics Discussions 4, no. 2 (2004): 1393–423. http://dx.doi.org/10.5194/acpd-4-1393-2004.

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Abstract. Partially oxidised organic compounds associated with PM2.5 aerosol collected in London, England, have been analysed using direct thermal desorption coupled to comprehensive gas chromatography-time of flight mass spectrometry (GCXGC-OF/MS). Over 10 000 individual organic components were isolated from around 10 μg of aerosol material in a single procedure and with no sample pre-treatment. Chemical functionalities observed using this analytical technique ranged from alkanes to poly-oxygenated species. The chemical band structures commonly used in GCXGC for group type identifications ove

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Welthagen, W., J. Schnelle-Kreis, and R. Zimmermann. "Group classification method for pm 2.5 aerosols analysed with Comprehensive two-dimensional gas chromatography (GCxGC TOF MS)." Journal of Aerosol Science 35 (July 2004): 17–28. http://dx.doi.org/10.1016/j.jaerosci.2004.06.009.

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Bassen, Alexander, Maik Kleinschmidt, and Christine Zöllner. "Corporate governance of German growth companies. Empirical analysis of the corporate governance quality and the structure of supervisory boards of companies listed on TEC-DAX." Corporate Ownership and Control 3, no. 3 (2006): 128–37. http://dx.doi.org/10.22495/cocv3i3p10.

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This article analyses the importance of corporate governance for growth companies, derives specific requirements for them and evaluates the corporate governance quality for companies listed on TecDax. Growth companies’ characteristics imply a comparatively high importance of corporate governance due to a high level of business and agency risk. Several corporate governance elements are therefore particularly important for growth companies. Overall, the empirical results imply a high conformity of the Tec-Dax companies with the GCGC criteria with some exceptions for specific companies and criter

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Koch, Rosemarie. "Compliance and transparency of German supervisory board compensation." Corporate Ownership and Control 8, no. 3 (2011): 94–107. http://dx.doi.org/10.22495/cocv8i3p8.

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Due to some new developments in the German Corporate Governance Codex (GCGC) as well as the introduction of new laws several aspects of the supervisory board compensation are subject to change. In a first step we analyze the size and structure of DAX 30 companies’ supervisory board compensation. One novelty of the article is that we perform this analysis on a person specific level instead of relying on firm level data. In a second step, we examine how well DAX 30 firms comply with the GCGC on supervisory board compensation both with regard to the recommended structure and with regard to the re

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Costa, R., C. Fanali, G. Pennazza, et al. "Screening of volatile compounds composition of white truffle during storage by GCxGC-(FID/MS) and gas sensor array analyses." LWT - Food Science and Technology 60, no. 2 (2015): 905–13. http://dx.doi.org/10.1016/j.lwt.2014.09.054.

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Evzikov, G. Yu, М. G. Bashlachev, and A. V. Farafontov. "Ganglion cyst of Guyon’s canal as a rare cause of compression neuropathy of the ulnar nerve (literature review and case report)." Russian journal of neurosurgery 20, no. 2 (2018): 59–65. http://dx.doi.org/10.17650/1683-3295-2018-20-2-59-65.

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The study objectiveis to analyze the existing research literature devoted to this problem and to assess clinical characteristics and specific features of the diagnosis and rational neurosurgical treatment for ganglion cyst of Guyon’s canal (GCGC) that caused compression neuropathy of the ulnar nerve.Materials and methods.Since 1955, researchers reported only 19 cases of ganglion cysts located in the wrist area and associated with tunnel neuropathy of the ulnar nerve. Since this condition is extremely rare, we present our own clinical observations.Results.Using the literature data, we described

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Byliński, Hubert, Jacek Gębicki, and Jacek Namieśnik. "Evaluation of Health Hazard Due to Emission of Volatile Organic Compounds from Various Processing Units of Wastewater Treatment Plant." International Journal of Environmental Research and Public Health 16, no. 10 (2019): 1712. http://dx.doi.org/10.3390/ijerph16101712.

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The paper describes an attempt at health risk assessment and odour concentration determination in the most important units of a wastewater treatment plant. The cancer risk (CR) and hazard index (HI) parameters in selected measurement locations were calculated based on the results of chromatographic analyses (GCxGC-TOF-MS) and the United States Environmental Protection Agency (US EPA) guidelines. No exceedance of the CR and HI acceptable levels was observed for identified and quantitatively determined compounds from the VOCs group. The acceptable level was exceeded for the summary HI parameter.

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Knoll, Kirsten E., Zander Lindeque, Adetomiwa A. Adeniji, Carel B. Oosthuizen, Namrita Lall, and Du Toit Loots. "Elucidating the Antimycobacterial Mechanism of Action of Decoquinate Derivative RMB041 Using Metabolomics." Antibiotics 10, no. 6 (2021): 693. http://dx.doi.org/10.3390/antibiotics10060693.

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Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), still remains one of the leading causes of death from a single infectious agent worldwide. The high prevalence of this disease is mostly ascribed to the rapid development of drug resistance to the current anti-TB drugs, exacerbated by lack of patient adherence due to drug toxicity. The aforementioned highlights the urgent need for new anti-TB compounds with different antimycobacterial mechanisms of action to those currently being used. An N-alkyl quinolone; decoquinate derivative RMB041, has recently shown promising antimicrobial a

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Zdarta, Agata, Wojciech Smułek, Amanda Pacholak, Beata Dudzińska-Bajorek, and Ewa Kaczorek. "Surfactant addition in diesel oil degradation – how can it help the microbes?" Journal of Environmental Health Science and Engineering 18, no. 2 (2020): 677–86. http://dx.doi.org/10.1007/s40201-020-00494-9.

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Abstract Purpose Despite wide research on bioremediation of hydrocarbon-contaminated soil, the mechanisms of surfactant-enhanced bioavailability of the contaminants are still unclear. The presented study was focused on the in-depth description of relationships between hydrocarbons, bacteria, and surfactants. In order to that, the biodegradation experiments and cell viability measurements were conducted, and the properties of cell surface were characterized. Methods MTT assay was employed to measure plant extracts toxicity to microbes. Then, membrane permeability changes were evaluated, followe

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Dissertations / Theses on the topic "Analyse GCxGC"

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Vendeuvre, Colombe. "Analyse détaillée de coupes pétrolières par chromatographie en phase gazeuse multidimensionnelle." Paris 6, 2006. http://www.theses.fr/2006PA066096.

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Elouma, Ndinga Arnold Murphy. "Inventaire et analyse chimique des exsudats des plantes d'utilisation courante au Congo-Brazzaville." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112023/document.

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Les exsudats des plantes sont des substances naturelles complexes. Ils sont utilisés par plusieurs populations d’Afrique et trouvent de nombreuses applications : en thérapeutique, en pharmacie galénique, en parfumerie, etc. Au Congo, une grande majorité de ces substances est encore mal connue. Ce travail de thèse a consisté à inventorier les plantes à exsudats du Congo et à mettre au point une méthodologie d’analyse physico-chimique permettant la caractérisation des exsudats d’arbres d’origine botanique certifiée.La méthodologie d’inventaire adoptée nous a permis de recenser 135 plantes à exsu

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Margeriat, Alexandre. "Conversion catalytique des vapeurs de pyrolyse et molécules modèles." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1340/document.

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La pyrolyse rapide de biomasse lignocellulosique produit des bio-huiles avec des rendements élevés mais ces liquides contiennent de nombreux composés oxygénés, une acidité élevée et de ce fait sont instables. Un hydrotraitement poussé de ces huiles est nécessaire avant qu'elles puissent être utilisées comme combustibles liquides. Afin de réduire le coût et d'améliorer les performances de l'hydrotraitement ultérieur, plusieurs stratégies ont été proposées pour réduire les teneurs en oxygène et en acides, comme l'ajout d'un lit catalytique après la pyrolyse. La conversion catalytique des vapeurs

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Wydra, Nicole [Verfasser]. "Bestimmung von polyzyklischen aromatischen Kohlenwasserstoffen in Bedarfsgegenständen und Verbraucherprodukten – Optimierung der Probenvorbereitung, der Aufreinigung und der Analyse mittels GC-MS und GCxGC-MS – / Nicole Wydra." Wuppertal : Universitätsbibliothek Wuppertal, 2012. http://d-nb.info/1029855943/34.

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Wydra, Nicole Elisabeth [Verfasser]. "Bestimmung von polyzyklischen aromatischen Kohlenwasserstoffen in Bedarfsgegenständen und Verbraucherprodukten – Optimierung der Probenvorbereitung, der Aufreinigung und der Analyse mittels GC-MS und GCxGC-MS – / Nicole Wydra." Wuppertal : Universitätsbibliothek Wuppertal, 2012. http://d-nb.info/1029855943/34.

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Adam, Frédérick Marie. "Recherche de sélectivité pour l'analyse moléculaire des distillats moyens par chromatographie multidimensionnelle." Paris 6, 2008. http://www.theses.fr/2008PA066266.

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Dans le cadre de l’amélioration de l’outil de raffinage, l’analyse moléculaire est essentielle pour la conception de modèles cinétiques utilisés pour l’optimisation des unités de production. Les techniques conventionnelles d’analyse ne permettant pas de répondre à ce challenge, la chromatographie en phase gazeuse bidimensionnelle (GC-2D) a été mise en œuvre. Le premier volet de l'étude concerne la spéciation de composés oxygénés dans les coupes gazoles. Le pouvoir résolutif de la GC-2D a été utilisé pour séparer les esters d’huiles végétales des hydrocarbures auxquels ils sont mélangés. Le dév

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Song, Shin Miin, and shinmiin@singnet com sg. "Comprehensive two-dimensional gas chromatography (GCxGC ) for drug analysis." RMIT University. Applied Sciences, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080627.114511.

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Separation technologies have occupied a central role in the current practices of analytical methods used for drug analysis today. As the emphasis in contemporary drug analysis shifts towards ultra-trace concentrations, the contribution from unwanted matrix interferences takes on greater significance. In order to single out a trace substance with confidence from a rapidly expanding list of drug compounds (and their metabolites) in real complex specimens, analytical technologies must evolve to keep up with such trends. Today, the task of unambiguous identification in forensic toxicology still re

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Van, der Westhuizen Katriena Elizabet. "Comprehensive multidimensional gas chromatography for the analysis of Fischer-Tropsch products." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/18006.

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Thesis (PhD)--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: The analysis of Fischer–Tropsch–derived (FT–derived) synthetic crude and derived products is very challenging because of the highly complex nature of these products. In this study, the use of comprehensive multidimensional gas chromatography (GCxGC) with time-of-flight mass spectrometry (TOF-MS) and flame ionisation detection (FID) was investigated for the analysis of these products and the technique was found to be invaluable for the analysis of these complex mixtures. The compositions of FT synthetic crude, produced a

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Näsström, Elin. "Diagnosis of acute and chronic enteric fever using metabolomics." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-140188.

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Enteric (or typhoid) fever is a systemic infection mainly caused by Salmonella Typhi and Salmonella Paratyphi A. The disease is common in areas with poor water quality and insufficient sanitation. Humans are the only reservoir for transmission of the disease. The presence of asymptomatic chronic carriers is a complicating factor for the transmission. There are major limitations regarding the current diagnostic methods both for acute infection and chronic carriage. Metabolomics is a methodology studying metabolites in biological systems under influence of environmental or physiological perturba

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Meindl, Jiří. "Stanovení organických sloučenin ve vzorcích biouhlu získaných mikrovlnou torefakcí biomasy." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401893.

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The thesis is focused on a determination of polycyclic aromatic hydrocarbons (PAHs) contained in dried pelletized sewage sludge and pelletized biochar. Biochars were made in mild conditions by microwave torrefaction of prepared sewage sludge. There were analyzed and quantified the 34 of standardized PAHs compounds in two series. The first serie, also called “Sada 1”, has been aimed at comparison of extraction methods for the chosen sample of sewage sludge and the sample of biochar. In serie “Sada 1”, there were compared efficiencies of chosen type of solvent or solvent mixture by comparison of

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Book chapters on the topic "Analyse GCxGC"

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Sweetman, Lawrence, Paula Ashcraft, and Jeanna Bennett-Firmin. "Quantitative Organic Acids in Urine by Two Dimensional Gas Chromatography-Time of Flight Mass Spectrometry (GCxGC-TOFMS)." In Clinical Applications of Mass Spectrometry in Biomolecular Analysis. Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-3182-8_20.

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Humston-Fulmer, Elizabeth M., David E. Alonso, and Joseph E. Binkley. "Improving cannabis differentiation by expanding coverage of the chemical profile with GCxGC-TOFMS." In Analysis of Cannabis. Elsevier, 2020. http://dx.doi.org/10.1016/bs.coac.2020.04.007.

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Conference papers on the topic "Analyse GCxGC"

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"Phytochemical Screening, GCxGC TOF-MS Analysis and Antibacterial Properties of Crude Rhoicissus Ttomentosa Rhizome Extract." In International Conference on Advances in Science, Engineering, Technology and Natural Resources. International Academy of Engineers, 2016. http://dx.doi.org/10.15242/iae.iae1116436.

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Johansen, Yngve Bolstad, Joachim Rinna, Soraya S. Betancourt, et al. "Asphaltene Gradient Analysis by DFA Coupled with Geochemical Analysis by GC and GCxGC Indicate Connectivity in Agreement with One Year of Production in a Norwegian Oilfield." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2018. http://dx.doi.org/10.2118/191490-ms.

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Jürgens, Sophie, Manuel Selinsek, Uwe Bauder, Bastian Rauch, and Markus Köhler. "Potential of Decentralized Container-Scale PtL Plants for Aviation: From Crude to Post-Processed FT-SPK." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14306.

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Abstract In today’s pressing quest of emission and pollution reduction in all energy sectors, research on renewable and sustainable fuels is a key component. The Institute of Combustion Technology at the German Aerospace Center strives to assess new, renewable fuel in a gear wheel approach of interdependent linked experiments, database comparison and model-based assessment, allowing for a fast iterative feedback to the fuel producer and giving a detailed valuation of fuels as well as a distinguished preselection when presented with numerous fuel samples. Synthetic fuels as a substitute for fos

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