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Data publikacji: 4 czerwca 2021

Data aktualizacji: 29 lipca 2024

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1

Genov, Daniel G. "Conformational analysis of 2-hydroxyalkyl phosphoryl compounds." Thesis, Staffordshire University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306955.

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2

Davies, Ilona Lynn. "Analysis of polycyclic aromatic compounds by multidimensional chromatography." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328575.

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3

Madichie, Chinedu Arinze. "The chromatographic analysis of organic compounds in natural waters." Thesis, University of Hull, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310270.

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4

Silwana, Nothemba. "Structure and thermal stability of selected organic inclusion compounds." Thesis, Cape Peninsula University of Technology, 2012. http://hdl.handle.net/20.500.11838/2618.

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Thesis (MTech (Chemistry))--Cape Peninsula University of Technology, 2012.<br>Crystal engineering is the synthesis of new crystalline materials with specific chemical and physical properties which allows the comprehensive understanding of the non covalent interactions that occur between molecules in the crystalline state. This has lead to extensive work being done in terms of host design. The study of non-covalent interactions formed by - these materials is crucial to understanding many biological processes. This study focuses on the inclusion compounds of 1, 4-bis (diphenylhydroxymethyl)

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5

Li, Yunchun. "Characterization of polar organic compounds and source analysis of fine organic aerosols in Hong Kong /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202008%20LIY.

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6

Dixon, John Mark. "The conformational analysis of cyclic compounds by NMR spectroscopy." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293631.

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7

Khedhair, K. A. "The conformational analysis of cyclic compounds by spectroscopic methods." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353919.

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8

Ahlgren, Joakim. "Organic Phosphorus Compounds in Aquatic Sediments : Analysis, Abundance and Effects." Doctoral thesis, Uppsala University, Analytical Chemistry, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6701.

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<p>Phosphorus (P) is often the limiting nutrient in lacustrine and brackish eco-systems, and enhanced input of P into an aquatic system might therefore negatively impact the environment. Because modern waste water manage-ment have reduced external P input to surface waters, internal P loading from the sediment has become one of the main P sources to aquatic ecosys-tems, in which relatively unknown organic P compounds seem to be more active in P recycling than previously thought.</p><p>This thesis focus is on improving analysis methods for organic P com-pounds in lacustrine and brackish sedimen

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9

Turner, Matthew A. "Boundaries in volatile organic compounds in human breath." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/20274.

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Exhaled breath is a rich and complex matrix containing many hundreds of compounds. Every breath offers the potential of a non-invasive measurement of the biochemical processes occurring in the human body and it is this notion that has led to the application of breath analysis for the detection of disease. With the majority of research in the field being focused on the detection of biomarkers, little has been presented on how the seemingly homeostatic matrix of breath varies during the course of normal life events. The research in this thesis describes how a subject's emotional state, physical

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10

Rhydderch, Shona. "Spectroscopic studies of photocatalysts for organic synthesis." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=215112.

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11

Sidat, Rehana. "The synthesis and analysis of spirobenz-1,3-azoles and related compounds." Thesis, De Montfort University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391342.

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12

Brien, Kimberly A. "Bismuth aryloxide reactivity kinetics of thermal decomposition and resulting organic oxidation products /." [Fort Worth, Tex.] : Texas Christian University, 2010. http://etd.tcu.edu/etdfiles/available/etd-07232010-131742/unrestricted/Brien.pdf.

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13

Kumar, Sacheen. "Mass spectrometric analysis of volatile organic compounds in oesophago-gastric cancer." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/24837.

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In the UK, oesophago-gastric (OG) cancer remains a disease with poor patient outcomes and only 35% of patients are suitable for potentially curative treatment at first presentation. Early detection of these cancers is necessary with Volatile Organic Compound (VOC) analysis being a promising area to explore for new endogenous biomarkers. In this research, the application of Selected-Ion Flow Tube Mass Spectrometry (SIFT-MS), a real-time technique, for the analysis of VOCs in biofluids and exhaled breath has been investigated. The primary aim of this research was to identify potential VOC biomar

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14

Wang, Yi. "Metal-organic and organic photosensitizers for photocatalytic hydrogen generation and carbon dioxide reduction." HKBU Institutional Repository, 2017. https://repository.hkbu.edu.hk/etd_oa/414.

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This thesis is focused on developing metal-organic and organic molecules for photocatalytic water splitting and carbon dioxide reduction. In chapter 1, an overview of hydrogen production, dye-sensitized solar cells and carbon dioxide reduction are provided. The development history and reaction mechanisms of catalytic systems are introduced along with the typical examples in each field. The applications of both metal-organic and organic compounds are covered. In chapter 2, nine molecular organic photosensitizers were designed and synthesized. The nine molecules were employed as the photosensiti

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15

Bullock, Kerry Robin. "Partitioning of VOCs in aqueous salt solutions." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/11981.

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16

ABRAMOWITZ, ROBERT. "ESTIMATION OF THE MELTING POINT OF RIGID ORGANIC COMPOUNDS (COSOLVENT, NAPHTHALENE)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183935.

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The melting points of rigid, hydrogen bonding, and non-hydrogen bonding organic compounds have been estimated from their chemical structure. The estimation was accomplished through the use of both additive and non-additive non-constitutive properties of the molecule. The melting points of the aforementioned compounds can be estimated by the equation: TM = TMPN + TIHBN + TPACK + 8.9*EXPAN + 73.1*SIGMAL + 196.3 where the dependent variable, TM, is the melting point of the compound in Kelvin, SIGMAL is the logarithm of the symmetry number for the molecule, EXPAN is the eccentricity of the molecul

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17

吳祖成 and Zucheng Wu. "Development of acillary techniques for chromatographic analysis of trace organic pollutants in environmental samples." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31236327.

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18

Han, Dawei. "Atmospheric Hydrocarbon Analysis." PDXScholar, 1993. https://pdxscholar.library.pdx.edu/open_access_etds/4588.

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This treatise studied two correlated important issues in atmospheric chemistry: real-time monitoring of ambient air and removal mechanisms of atmospheric hydrocarbons. An analytical system was designed for the purpose of identification and measurement of sub-ppb level hydrocarbons of different reactivities in air samples. This analytical system was then applied to a series of smog-chamber studies which simulated the removal of reactive hydrocarbons from the atmosphere by reaction with hydroxyl radicals. Six representative atmospheric hydrocarbons ( hexane, octane, toluene, m-xylene, a-xylene a

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19

Hernandez, H. "Analysis of organic compounds by chromatography-mass spectrometry, GC-IR and SFE." Thesis, Swansea University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637268.

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The introductory chapter describes the basics of chromatography and quadrupole mass spectrometry, together with an introduction to polycyclic aromatic hydrocarbons, polychlorinated biphenyls and growth hormones which are the analytes used in later chapters. Chapter two gives an account of packed supercritical chromatography and thermospray interfaces for coupling SFC with mass spectrometry. The separations developed for polycyclic aromatic hydrocarbons and growth hormones are discussed. Limits of detection for ultraviolet-detection for both sets of compounds are determined. In chapters three a

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20

Huang, Wei [Verfasser], and S. [Akademischer Betreuer] Norra. "Molecular Level Analysis of Atmospheric Organic Compounds / Wei Huang ; Betreuer: S. Norra." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/1192373650/34.

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21

Smith, Stephen. "The analysis of organic compounds as a tool for diagnosis of disease." Thesis, University of the West of England, Bristol, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444504.

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22

Abood, Ahmed T. "Source Apportionment Analysis of Measured Volatile Organic Compounds in Corpus Christi, Texas." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500059/.

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Corpus Christi among of the largest industrialized coastal urban areas in Texas. The strategic location of the city along the Gulf of Mexico allows for many important industries and an international business to be located. The cluster of industries and businesses in the region contribute to the air pollution from emissions that are harmful to the environment and to the people living in and visiting the area. Volatile organic compounds (VOC) constitute an important class of pollutants measured in the area. The automated gas chromatography (Auto GC) data was collected from Texas Commission of En

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23

Okunuga, Omolara Oluwaseun. "Analysis of volatile organic compounds produced during the decomposition of human analogues." Thesis, University of Leicester, 2017. http://hdl.handle.net/2381/39915.

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The study of volatile organic compounds (VOCs) associated with decomposing remains is a field of growing interest in forensic science. Over the past decade, there has been an increasing demand to explicate key signatures of decomposition odour in an attempt to improve upon current training kits, aid in the development of an implement which could be used to detect clandestine graves, and to determine the post-mortem interval of a corpse. At present, current research seems to validate the view that the decomposition odour profile is ambiguous because of disparities in the environment in which de

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24

Huang, Wen-hsin. "Application of comparative molecular field analysis for predicting microbial sulfoxidation /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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25

Wu, Zucheng. "Development of acillary techniques for chromatographic analysis of trace organic pollutants in environmental samples /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19667188.

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26

Wood, Erin. "Analysis of high molecular weight organic compounds in ambient aerosols using mass spectrometry." Diss., Connect to online resource, 2005. http://wwwlib.umi.com/cr/colorado/fullcit?p1427784.

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27

Wilson, Ionara De Lima. "A spatial epidemiological analysis of oral clefts and volatile organic compounds in Texas /." View online, 2007. http://ecommons.txstate.edu/geogtad/13.

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28

Callear, Samantha. "Preparation, characterisation and structural analysis of salts and co-crystals of organic compounds." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/66654/.

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In this thesis the factors influencing the formation of a binary compound and the proton transfer within the binary compound have been investigated. The formation of a binary compound, or heteromeric system, over a homomeric system requires the heteromeric system to be more energetically favourable than the homomeric system. In some circumstances, however, no solid crystallises at all. Proton transfer within the binary compound can lead to the formation of a salt, whereas a binary compound containing neutral components is called a co-crystal. The ‘rule of three’ which predicts that proton tran

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29

Elemia, Freire Constancia Felise, Simon Edin, and Chang Ho Lee. "SPME Method for Chemical Analysis of Heavy Organic Trace Compounds in Synthesis Gas." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277054.

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There currently exists no commercialized method for rapid sampling and analysis of trace tar ingas streams. Solid phase microextraction (SPME) with a polydimethylsiloxane (PDMS) solidphase has been previously investigated as a possible candidate due to its solvent-free natureand reusability. This project set out to deliver a proof of concept study to test whether SPMEcan be sufficiently tuned to analyse trace tar content in syngas below the concentration of 0.1mg/Nm 3 . Due to complications that arose from the Covid-19 pandemic, it was unfeasible tocarry out the practical elements of the proje

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30

Ho, Sai Hang. "Analysis of airborne organic compounds using thermal desorption- gas chromatography-mass spectrometry methods /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202004%20HO.

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31

Qi, Ying 1964. "Characterisation of organic and inorganic components in process water from a novel lignite dewatering process." Monash University, School of Chemistry, 2004. http://arrow.monash.edu.au/hdl/1959.1/5234.

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32

Brücher, Jörg. "The influence of sorption on transport of organic compounds in soil /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5481-6.pdf.

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33

Kasulavada, Santhosh Kumar. "Analysis of Kyrock for Leaching of Impurities in Synthetic Rainwater." TopSCHOLAR®, 2013. http://digitalcommons.wku.edu/theses/1276.

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Kyrock is a coarse grained sandstone with a complex mixture of organic and inorganic compounds. Mining of Kyrock is for use in road construction and roofing. Kyrock samples were analyzed using scanning electron microscopy to obtain elemental analysis. High levels of carbon indicate the presence of organic compounds. Analysis of an acid digestion of the samples using inductively coupled plasma spectroscopy showed inorganic compounds such as titanium oxide, vanadium oxide along with traces of arsenic. Elemental analysis of samples indicates a percent of carbon, and sulfur with no notable traces

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34

Brown, S. M. "The chemistry and conformational analysis of some normal and medium ring alicyclic and heterocyclic compounds." Thesis, University of Huddersfield, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354322.

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35

Vitzthum, von Eckstaedt Christiane D. "δ13C and δD measurements of volatile organic compounds in a variety of emissions by thermal desorption compound specific isotope analysis". Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/851.

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Volatile organic compounds (VOCs) can be related to different compound classes but they all have a distinct vapour pressure allowing them to enter the atmosphere under ambient conditions. VOCs can undergo various reactions in the atmosphere and are emitted by various processes (anthropogenic and natural). Compound specific isotope analysis (CSIA) has been used in many other research studies to track the fate and source of compounds in the environment and the geological record. The majority of CSIA has been applied to extracts from soil, sediment or crude oils requiring entirely different sampl

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36

Theberge, Ashleigh Brooks. "Droplet-based microfluidics for chemical synthesis and integrated analysis." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609687.

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37

Sauvage, Carina [Verfasser]. "Analysis of Non-Methane Hydrocarbons and Organic Nitrogen Compounds in the Atmosphere / Carina Sauvage." Mainz : Universitätsbibliothek Mainz, 2019. http://d-nb.info/118994247X/34.

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38

Ruotsalainen, Daniel. "Analysis of organic compounds in the rhizosphere soil of Cyperus rotundus using LC-MS." Thesis, KTH, Kemi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-291534.

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Den presenterade studien hade som syfte att utveckla en extraktions-, provpreparerings- och analysmetod för jorden, i vilken gräset Cyperus rotundus växer, i ett försök att identifiera möjliga äggläggningsattraherande ämnen för myggan Anopheles gambiae. Högupplösande vätskekromatografi med hydrofob stationär fas (RP-HPLC, en.) med Masspektrometri med Elektrosprejjonisering (ESI-MS, en.) användes för separation och detektion av de extraherade proverna. Ett flertal extraktionssatser gjordes, där parametrar och tekniker ändrades under utvecklingen av arbetet. Ultraljudsassisterad extraktion (UAE)

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39

Xie, Xiaofeng. "High Flow Air Sampler for Rapid Analysis of Volatile and Semi-Volatile Organic Compounds." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/6165.

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Volatile and semi-volatile organic compounds are ubiquitous, and some of them are hazardous. The ability to rapidly detect and identify trace levels of them in air has become increasingly important. The conventional device used today for sampling and concentrating them in air is thermal desorption tubes filled with specific sorbents, which can only collect air samples at flow rates of 100-200 mL/min. In order to detect low concentration (ppt level) VOC compounds, long sampling time (>2 h) and sensitive detection are required. At the same time, portable instrumentation for on-site analysis has

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40

McBrayer, Tinker R. "Anaerobic biodegradation of selected organic compounds with and without inhibition of sulfate reducing bacteria." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/46047.

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<p>The primary objective of this study was to investigate the use of hydrogen as a structural substitute or as a reducing equivalent in the anaerobic biodegradation of methanol, methyl tert-butyl ether (MTBE), toluene, phenol, and 2,4- dichlorophenol. In addition, biodegradation rates of these compounds at various initial concentrations with and without inhibition of sulfate reducing bacteria were determined along with anaerobic biodegradation rate constants for each of the compounds studied.</p> <p>Rates of methanol biodegradation were only slightly altered in molybdate amended microc

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41

Gasper, Susan M. "Spin selective reactivity of arylcations ; Part II: Anthraquinone oligonucleotide conjugates as probes of electron transfer in DNA." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/30533.

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42

Roghani, Mohammadyousef. "INVESTIGATION OF VOLATILE ORGANIC COMPOUNDS (VOCs) DETECTED AT VAPOR INTRUSION SITES." UKnowledge, 2018. https://uknowledge.uky.edu/ce_etds/73.

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This dissertation investigates unexplained vapor intrusion field data sets that have been observed at hazardous waste sites, including: 1) non-linear soil gas concentration trends between the VOC source (i.e. contaminated groundwater plume) and the ground surface; and, 2) alternative pathways that serve as entry points for vapors to infiltrate into buildings and serve to increase VOC exposure risks as compared to the classic vapor intrusion model, which primarily considered foundation cracks as the route for vapor entry. The overall hypothesis of this research is that theoretical knowledge of

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43

Wu, Hao. "Metal-organic compounds of iridium(III) and platinum(II): synthesis, characterization and optoelectronic applications." HKBU Institutional Repository, 2014. https://repository.hkbu.edu.hk/etd_oa/61.

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The molecular design, synthesis and characterization of a series of ligands and the corresponding novel iridium(III) or platinum(II) complexes are discussed in this thesis. Their photophysical and electrochemical properties, the applications in organic light-emitting diodes (OLEDs), dye-sensitized solar cells (DSSCs), aggregation induced emission (AIE) and time-resolved infrared (TRIR) study are also investigated. Chapter 1 generates a brief overview of the background, principle, and development of OLEDs, DSSCs, AIE materials and the involvement of the TRIR technique. Chapter 2 describes th

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44

MOREIRA, RENATA. "Estudo da pirólise lenta da casca da castanha de caju." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26078.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2016-04-08T12:32:34Z No. of bitstreams: 0<br>Made available in DSpace on 2016-04-08T12:32:34Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado em Tecnologia Nuclear)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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45

Mörbt, Nora. "Differential proteome analysis of human lung epithelial cells following exposure to aromatic volatile organic compounds." Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4925/.

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The widespread usage of products containing volatile organic compounds (VOC) has lead to a general human exposure to these chemicals in work places or homes being suspected to contribute to the growing incidence of environmental diseases. Since the causal molecular mechanisms for the development of these disorders are not completely understood, the overall objective of this thesis was to investigate VOC-mediated molecular effects on human lung cells in vitro at VOC concentrations comparable to exposure scenarios below current occupational limits. Although differential expression of single prot

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46

Sit, Hoi Leung. "Applications of thermal desorption GCMS analysis of nonpolar organic compounds in source and ambient aerosols /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202008%20SIT.

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47

Kongtip, Pornpimol. "Charcoal cloth as an adsorbant for the analysis of volatile organic compounds in indoor air." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41640.

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A comparison was made between NIOSH-type, prepacked nutshell charcoal tubes and layers of commercial charcoal cloth in a stainless steel cassette designed for the active sampling/adsorption of different concentrations of a mixture of volatile organic chemicals (VOCs) (benzene, trichloroethylene, toluene, tetrachloroethylene, chlorobenzene and o-xylene). Physicochemical parameters of the charcoal cloth including breakthrough times and volumes and adsorption capacities were determined for toluene and the VOC mixture. The quantitative removal of VOCs from the charcoal cloth by solvent desorption,

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48

Ketsise, Marina Nkhalong. "Monitoring and analysis of semi-volatile organic compounds in ambient air / by Marina Nkhalong Ketsise." Thesis, North-West University, 2006. http://hdl.handle.net/10394/1143.

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The growing concern for environmental pollution indicates the importance of correctly predicting the fate of pollutants in ambient air. This study was conducted to predict the ambient levels of polycyclic aromatic hydrocarbons (PAH's) in the greater Sasolburg area and to better understand the distribution and the sources of PAH's in ambient air. PAH's are chemical compounds which consist of two or more fused benzene rings and made entirely from carbon and hydrogen. PAH's are widespread environmental pollutants which are mainly emitted from combustion sources, which includes automobiles, indust

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49

Patel, Mitesh Kantilal. "Analysis of volatile organic compounds in breath as a potential diagnostic modality in disease monitoring." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/7861.

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The use of breath odours in medical diagnosis dates back to classical times, though in its modern form the technique is only a few decades old. There are several breath tests in common clinical use, though all of them involve administration of a known or labelled exogenous compound. More recently, over the last twenty years, interest has focussed on analysis of endogenous metabolites in breath, but despite a large number of published studies reporting a number of disease markers, there has been little or no impact on clinical practice. Nonetheless, breath analysis offers a number of potential

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50

Hassett, Anthony John. "Analysis of volatile organic compounds in water by sorptive extraction and gas chromatography - mass spectrometry." Diss., University of Pretoria, 2001. http://hdl.handle.net/2263/26860.

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