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Dissertations / Theses on the topic 'DLS and FTIR analysis'

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Published: 3 June 2025
Last updated: 31 July 2025

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1

PEREIRA, THIAGO M. "Análise das diferenças bioquímicas nos tecidos e lesões tireoidianas por imageamento espectral no infravermelho (FTIR)." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10567.

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Made available in DSpace on 2014-10-09T12:42:03Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:04:44Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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2

de, Ghellinck d'Elseghem Vaernewijck Xavier. "Instrumental contribution to FTIR spectroscopy using a femto-OPO laser source and cavity enhanced absorption." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209629.

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L'expérience nommée femto-FT-CEAS a été mise en place durant ce travail. Elle<p>combine une source d'absorption laser femto-opo, une cavité optique haute finesse<p>et un interféromètre à transformée de Fourier. Ce montage instrumental a permis<p>d'enregistrer des spectres sur un domaine de 100 cm−1 avec un coefficient d'absorption<p>minimal détectable de 5 10−10cm−1 pour des paramètres de résolution spectrale de<p>2 10−2cm−1 et un temps d'enregistrement d'une heure. Le coefficient d'absorption<p>equivalent par moyenne quadratique par élément spectral correspondant est de 1.2<p>10−12cm−1 Hz−1/2
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3

Petitgas, Benoit. "Corrélation entre le comportement électrique et les propriétés physico-chimiques des fils émaillés : vers l'origine de la défaillance de machines tournantes en conditions extrêmes." Phd thesis, Université Claude Bernard - Lyon I, 2013. http://tel.archives-ouvertes.fr/tel-00958120.

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Le sujet de cette thèse concerne les applications hautes températures, où les moteurs doivent être capables de fonctionner à 400°C pendant 2 heures, selon la norme en vigueur. Il convient dans ce type d'applications de disposer de matériaux assez stables pour que leurs propriétés isolantes restent inchangées, ce qui est le cas du fil émaillé PolyImide (PI). Ce fil émaillé pose néanmoins des problèmes économiques et de fournisseurs, d'où la nécessité de trouver d'autres alternatives. Ce travail de thèse a eu pour but de mettre au point et valider des techniques d'analyses (ATG / ATM / ATR-FTIR
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4

Meziani, Smaïl. "Influence du procédé de congélation sur les levures et les propriétés techno-fonctionnelles des pâtes sucrées (type Kougelhopf)." Thesis, Vandoeuvre-les-Nancy, INPL, 2011. http://www.theses.fr/2011INPL089N/document.

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Les pâtes surgelées sont relativement stables et peuvent être fabriquées à l’échelle industrielle, distribuées et cuites à la demande au moment de la vente ou de la consommation (point chaud). La congélation des pâtes sucrées induit une baisse de volume et une augmentation du temps de fermentation, ces conséquences sont dues à deux facteurs : la baisse de la production de CO2 (viabilité des levures) et la faible capacité de rétention de gaz du réseau gluténique. La perte de la qualité des pâtes congelées est accélérée durant le stockage. Cette thèse porte sur l’étude de l’effet de la congélati
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5

Aboulayt, Reda. "Adsοrptiοn de l'isοbutanοl dans les zeοlithes : appοrt des analyses multivariées". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMC252.

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Les méthodes analytiques classiques pour la caractérisation des propriétés d’adsorption de catalyseurs ou d’adsorbants, telles que l'analyse gravimétrique ou la calorimétrie, donnent des valeurs d’enthalpies moyennées sur différents sites d'adsorption. Dans cette étude, la spectroscopie IR in situ combinée aux analyses multivariées a été utilisée pour identifier et caractériser quantitativement l'adsorption d'alcools sur des zéolithes. La méthode de résolution multivariée de courbes par moindres carrés alternés – (MCR-ALS), utilisée pour la première fois dans le domaine de l'adsorption, nous a
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6

Broberg, Marina. "FTIR method for analysis of synthesis gas." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-94539.

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The research institute ETC in Piteå is working with energy technical research and development. Today, much work revolves around research about renewable sources for fuel. In one project, biomass such as wood pellet is heated up while producing synthesis gas. The synthesis gas is then analyzed using three different GC techniques. ETC wanted to be able to make all their analysis on one instrument and with a faster speed. They contacted the company Rowaco in Linköping for help with developing a method on FTIR for analysis of the synthesis gas and that has been the aim for this thesis. A method ha
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7

Gu, Pei. "Thermal Analysis of Milkweed Floss Using TG/FTIR." TopSCHOLAR®, 1992. http://digitalcommons.wku.edu/theses/1556.

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The thermal analysis of milkweed and several individual commercial samples of .similar chemical composition has been carried out. By combining a two-stage thermal process. (pyrolysis-combustion) with TG-FTIR, it has been possible to identify the major organic volatile products during pyrolysis and to correlate gas evolution with the decomposition of the individual components (cellulose, hemicellulose and lignin) of the floss. During pyrolysis, acetic acid, formic acid and methanol are formed 1n addition to CO2, and H2O. The data also show that pyrolytic decomposition of the three chemical cons
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8

Inberg, R. Brandon. "Enhanced step mode FTIR position control." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/inberg/InbergR1205.pdf.

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9

Meli, Louis Marcel. "Breath analysis : investigation of a low cost FTIR approach." Thesis, Cardiff University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316270.

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10

Al-Mutawah, Jameela. "Using matrix isolation FTIR for trace atmospheric gas analysis." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270218.

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11

Zamotaeva, Valeriya. "High-resolution FTIR spectra analysis of sulfur dioxide isotopologues." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCK053.

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Dans cette thèse, nous avons examiné les propriétés spectrales de l’anhydride sulfureux. Les spectres FTIR expérimentaux de nombreux isotopologues du dioxyde de soufre, 32S16O2, 34S16O2, 32S18O2 et 32S16O18O, ont été enregistrés pour la première fois dans les régions des bandes fondamentales, «chaudes», harmoniques et de combinaison. La grande variabilité des conditions expérimentales a permis d’observer et d’identifier pour la première fois des transitions appartenant aux ban¬des ro-vibrationnelles suivantes : 3v2, 3v2 - v2, 2v2 - v2 bandes de 32S16O2 ; 2v2 - v2 bande de 34S16O2 ; v1 + v2, v2
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12

Hung, Wing Wa. "FTIR and XPS of congruent and stoichiometric LiNbO3." HKBU Institutional Repository, 2003. http://repository.hkbu.edu.hk/etd_ra/442.

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13

Elagamy, Samar H. "Advancing ATR-FTIR Imaging into The Realm or Quantitative Analysis." Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1574416533908128.

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14

Bradfield, Keith. "Evolved Gas Analysis Using Coupled TG-CG & TG-FTIR." TopSCHOLAR®, 1991. https://digitalcommons.wku.edu/theses/2155.

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Thermal analysis methods have ben used for many years for material characterization. In recent years, thermal methods have been coupled to other methods of chemical analysis to obtain more complete material characterization. This study looks at thermal decomposition of polymer samples as well as coal samples in atmospheres of nitrogen and air. The thermal analysis instrument used was coupled to a Gas Chromatograph (GC) and a Fourier Transform Infrared Spectrometer (FTIR) so that the gaseous products evolved during thermal decomposition could be analyzed. The results obtained show that the coup
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15

Zhang, Qi. "Thermal Analysis of Bismaleimide/Graphite Fiber Composite by TG/FTIR." TopSCHOLAR®, 1993. https://digitalcommons.wku.edu/theses/3026.

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The purpose of this project was to study the thermal and oxidative stability of a specific polymer composite. A TG/FTIR combined technique was employed to characterize this polymer/graphite fiber composite. The polymer composite sample was decomposed in nitrogen, air, and 3% oxygen atmospheres in a Seiko thermogravimetric analyzer. The use of a gas cell Fourier-transform IR spectrometer downstream from the TGA allowed for the identification of evolved gas products. The thermal oxidative stability (TOS) of this composite was compared to its thermal stability. Also, comparison of the TOS in diff
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16

Morrell, Claire. "FTIR emission studies of chemical processes." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326026.

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17

Lopes, Jéssica Sousa. "FTIR, a potential tool to dementia diagnosis trough analysis of plasma." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/16149.

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Mestrado em Biomedicina Molecular<br>Nowadays it is still difficult to perform an early and accurate diagnosis of dementia, therefore many research focus on the finding of new dementia biomarkers that can aid in that purpose. So scientists try to find a noninvasive, rapid, and relatively inexpensive procedures for early diagnosis purpose. Several studies demonstrated that the utilization of spectroscopic techniques, such as Fourier Transform Infrared Spectroscopy (FTIR) and Raman spectroscopy could be an useful and accurate procedure to diagnose dementia. As several biochemical mechanisms rela
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18

Sonnendecker, Paul Walter. "Quantitative analysis of time-resolved FTIR specta : steps towards full automation." Diss., University of Pretoria, 2015. http://hdl.handle.net/2263/56109.

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Inline, time-resolved FTIR spectra are commonly recorded after completion of the experiments. The abilities and versatility of FTIR spectroscopy can, however, also be utilised in the in situ quantification of absorbing mixtures. Recent developments, in the laboratory where this investigation was conducted, demands the inline quantification of PTFE pyrolysis products for process control purposes. This investigation is primarily focused on the development of a procedure and software capable of processing, fitting and quantifying real-time, time-resolved spectra. Processing methods were evaluated
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19

Memon, Khalida Perveen. "Solid fat index determination by Fourier transform (FTIR) spectroscopy." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=24028.

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This work describes an investigation of the development of a Fourier Transform Infrared (FTIR) spectroscopic method for the determination of Solid Fat Index (SFI) of fats as a possible replacement of the traditional dilatometric procedure. The initial approach considered was the use of an existing FTIR analytical package which was designed to measure iodine value (IV), saponification number (SN), and cis and trans content. It was hypothesized that these measures could be related to SFI using multiple linear regression (MLR), thereby allowing the existing analytical package to simultaneously ma
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20

Starr, Michael J. "AFM-FTIR A New Technique for Materials Characterization /." Cincinnati, Ohio : University of Cincinnati, 2008. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1227192819.

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Thesis (M.S.)--University of Cincinnati, 2008.<br>Advisor: James Boerio. Title from electronic thesis title page (viewed Feb.16, 2009). Includes abstract. Keywords: AFM; FTIR spectroscopy; atomic force microscopy; interphase; adhesive analysis; interferogram. Includes bibliographical references.
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21

Veres, Patrick. "FTIR analysis of particulate matter collected on teflon filters in Columbus, OH." Connect to resource, 2005. http://hdl.handle.net/1811/427.

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Thesis (Honors)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formattted into pages: contains 39 p.; also includes graphics. Includes bibliographical references (p. 37-39). Available online via Ohio State University's Knowledge Bank.
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22

Martí, Aluja Idoia. "Analysis of polymerisation / aggregation processes by nir chemical imaging and ftir spectroscopy." Doctoral thesis, Universitat Rovira i Virgili, 2013. http://hdl.handle.net/10803/125668.

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El principal objectiu d’aquesta tesi és desenvolupar mètodes analítics basats en la combinació entre l’espectroscòpia d’infraroig i tècniques quimiomètriques per analitzar in situ un procés de polimerització i l’agregació de la insulina. El procés de polimerització es va monitoritzar mitjançant la tècnica de near-infraredchemicalimaging (NIR-CI). L’anàlisi quimiomètric de les dades obtingudes ha permès evidenciar la presència d’un equilibri tautomèric d’un dels reactius. El segon procés estudiat ha estat l’agregació de la insulina, establint diverses metodologies basades en l’espectroscòpia d’
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23

Chatterton, Logan. "Spectral analysis of petroleum reservoir rock using fourier transform infrared (FTIR) spectroscopy." Thesis, Oklahoma State University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10140532.

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<p> Compositional analysis of reservoir rock is a vital aspect of oil exploration and production activities. In a broad sense, knowing the mineral composition of a reservoir can help with characterization and interpretation of depositional environments. On a smaller scale, identifying mineralogy helps calibrate well logs, identify formations, design drilling and completion programs, and screen for intervals with potential problem minerals, such as swelling clays. The petroleum industry utilizes two main methods to find compositional mineralogy, x-ray diffraction (XRD) and thin section analysis
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24

Batistuti, Marina Ribeiro. "Classificação de fungos através da espectroscopia no infravermelho por transformada de Fourier." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-31012013-094052/.

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A identificação de isolados dentro de algumas espécies de fungos filamentosos é de interesse médico, agrícola e industrial. Dentro do gênero Metarhizium, por exemplo, a identificação de espécies vêm sendo constantemente modificada devido a análise genética. Nesse contexto, o desenvolvimento de novas estratégias para a identificação rápida e confiável de microrganismos de maneira geral, e de fungos especificamente, é desejável. A espectroscopia no infravermelho por transformada de Fourier (FTIR) tornou-se amplamente difundida na medicina e biologia por fornecer rapidamente informações capazes d
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25

Fernandes, Inês Castro. "Identification and classification of prostate tumour tissues by FTIR." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12648.

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Mestrado em Biomedicina Molecular<br>The development of prostate cancer (PCa) is not yet fully understood, but it is already recognized that it develops through pre malignant stages. Thus, the most important factor in the prevention of cancer is early detection, facilitating eradication of these pre-malignant cells prior to systemic invasion. There is a great clinical need for techniques that can detect these pre-malignant biochemical changes that can advance to cancer. The infrared (IR) spectroscopy is a powerful analytical tool to provide detailed information on the chemical composition of
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26

Dong, Jun 1971. "Development of Fourier transform infrared (FTIR) spectroscopy for determining oil quality." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27308.

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In this work, a rapid Fourier transform near infrared (FT-NIR) spectroscopic peroxide value (PV) method was developed and a prototype Continuous Oil Analysis and Treatment (COAT) system was assessed for monitoring and analytical purposes. High erucic acid rapeseed oil, a principle representative of triglyceride based oils suitable for biodegradable lubricating applications and mineral oil were used to test the methodology developed.<br>The FT-NIR PV method is based on a well defined stoichiometric reaction of triphenylphospine (TPP) with hydroperoxides to form triphenylphospine oxide (TPPO). A
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27

Chen, Ziyu. "The crystallization of poly(ethylene terephthalate) studied by thermal analysis and FTIR spectroscopy." Thesis, University of Birmingham, 2013. http://etheses.bham.ac.uk//id/eprint/4251/.

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This thesis concerns the thermal behaviour and properties, isothermal crystallization kinetics and seeded crystallization study of Poly (ethylene terephthalate) (PET) using thermal analysis Fourier transform infrared (TA-FTIR), two-dimensional infrared correlation spectroscopy (2D-FTIR) and differential scanning calorimetry (DSC). TA-FTIR has been used to characterize phase transitions by a change in the absorbance or peak position with temperature in thermal cycling. It assigns the phase transition temperature to an individual chain segment and observes two different types of thermal behaviou
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28

Silva, Rafaela Cerdeira. "Identification of Alzheimer biomarkers by FTIR: a pilot study." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/12436.

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Mestrado em Biomedicina Molecular<br>The absorption of radiation in the mid-infrared spectral region provides detailed information on the chemical composition of biological samples. Most molecular species absorbs infrared light, giving rise to distinctive spectral patterns in transmitted light. The pathological conditions are associated with metabolic disorders that are reflected in homeostatic changes of molecular components of cells and tissues. The clinical potential of Fourier Transform Infrared (FTIR) spectroscopy to detect such changes and its use as a diagnostic tool has received increa
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Dong, Jun 1971. "Quantitative condition monitoring of lubricating oils by Fourier transform infrared (FTIR) spectroscopy." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36915.

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Three new quantitative Fourier transform infrared (FTIR) spectroscopic methods were developed to measure key lubricant condition monitoring parameters; total acid number (TAN), total base number (TBN), and moisture (H2O). All methods employ a common sample-handling accessory and are based on the addition of specific reagents designed to react stoichiometrically with target species in oils, with quantification being carried out using differential FTIR spectroscopy. The combined use of a stoichiometric reaction and differential spectroscopy overcomes the need for a reference oil, which has tradi
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30

Mader, Kerstin T. "Investigation of membrane permeation using ATR-FTIR spectroscopic imaging and multivariate target factor analysis." Thesis, University of Greenwich, 2009. http://gala.gre.ac.uk/8102/.

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Attenuated total reflectance Fourier transform (ATR-FTIR) spectroscopy and ATR-FTIR spectroscopic imaging was used for the in vitro monitoring of the mechanisms of drug permeation and the effects of penetration enhancers on silicone membrane and human stratum corneum (SC). Simulated spectroscopic imaging data sets were used to validate the scope and application of quantitative iterative target transformation factor analysis (QITTFA) which is a variant of target factor analysis (TFA) in the presence of instrumental noise and collinearity. The results show that QITTFA is robust in the presence o
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31

Ma, Kangming 1965. "Peroxide value and trans analyses by Fourier transform infrared (FTIR) spectroscopy." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36643.

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New Fourier transform infrared (FTIR) approaches for the quantitative determination of peroxide value (PV) and isolated trans analyses were investigated and developed. The FTIR-PV methods investigated were all based on the stoichiometric reaction of hydroperoxides and triphenylphosphine (TPP) which converts TPP to triphenylphosphine oxide (TPPO). A reference transmission cell (100 mum) method was developed based on the use of a unique TPPO absorption at 542 cm-1. This method covered PV values from 0--15 PV and was shown to be superior in accuracy and reproducibility to the standard American Oi
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32

Jones, Kolton K. "An Integration Setup if the in-situ Mass and Spectroscopic Analysis for Volatile Liquids or Solids." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/2064.

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To help address the growing need for more and better sensors, an attempt was made to produce an in-situ mass and spectroscopic analysis of liquid and solid samples, to characterize samples and sensors. Spectroscopic analysis consisted of Raman and FTIR where mass measurements were carried out. The sample or sensor’s holder would allow for spectroscopic analysis as well as expose the sample to high temperatures and various chemicals. While Raman and FTIR were successful in producing reliable and consistent data, the constructed watt balance was not. This failure was a result of eliminate vibrat
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33

Dutra, Mariana Alves Leite. "Uma nova rota de obten??o de poli(n-isopropilacrilamida-co-laurato de vinila) e sua caracteriza??o f?sico-qu?mica em meio aquoso." PROGRAMA DE P?S-GRADUA??O EM QU?MICA, 2016. https://repositorio.ufrn.br/jspui/handle/123456789/21972.

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Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-13T19:11:35Z No. of bitstreams: 1 MarianaAlvesLeiteDutra_DISSERT.pdf: 2825637 bytes, checksum: 18b7c74e24edf8e546ebd99e18dff673 (MD5)<br>Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-14T00:26:44Z (GMT) No. of bitstreams: 1 MarianaAlvesLeiteDutra_DISSERT.pdf: 2825637 bytes, checksum: 18b7c74e24edf8e546ebd99e18dff673 (MD5)<br>Made available in DSpace on 2017-02-14T00:26:45Z (GMT). No. of bitstreams: 1 MarianaAlvesLeiteDutra_DISSERT.pdf: 2825637 bytes, checksum: 18b7c74e24e
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Lepird, Hannah Hataipan. "Spectroscopic Analysis of Electric Field Fluctuations and Cofactor Dynamics: Insights for Enzyme Design." OpenSIUC, 2021. https://opensiuc.lib.siu.edu/theses/2855.

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Enzyme design is a steadily growing field of computational chemistry, but its successes are limited by the current available knowledge and application of enzyme conformational dynamics. In this work a series of FTIR and 2D IR spectroscopic methods, for observing the conformational dynamics of an enzymatic active site and its surrounding residues, are characterized. The enzyme model system for these studies is the promiscuous ene-reductase from Pyrococcus horikoshii (PhENR) which is capable of binding substrates in multiple orientations. In one method, the spectral lineshape of an aryl-nitrile
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Hughes, Caryn Sian. "Development of Fourier transform infrared spectroscopy for drug response analysis." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/development-of-fourier-transform-infrared-spectroscopy-for-drug-response-analysis(e03ec73c-e9c4-4515-9f06-a549544a8ab9).html.

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The feasibility of FTIR-based spectroscopy as a tool to measure cellular response to therapeutics was investigated. Fourier transform mid-infrared spectroscopy has been used in conjunction with multivariate analysis (MVA) to assess the chemistry of many clinically relevant biological materials; however, the technique has not yet found its place in a clinical setting. One issue that has held the technique back is due to the spectral distortions caused by resonant Mie scattering (RMieS), which affects the ability to confidently assign molecular assignments to the spectral signals from biomateria
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Bajhaiya, Amit. "Metabolite analysis of Chlamydomonas reinhardtii and transcriptional engineering for biofuel production." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/metabolite-analysis-of-chlamydomonas-reinhardtii-and-transcriptional-engineering-for-biofuel-production(185995ba-d1be-44ff-a87a-140c19655d31).html.

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It has been long known that algae have the potential to produce a diverse range of metabolic products including lipid and starch, which could be utilized as a fuel feedstock. Despite the capacity of algae to synthesize and store large amounts of lipids and starch, algae are not currently a commercially viable feedstock for biofuel. The metabolite storage in algae can depend on the availability of nutrients such that nutrient starvation can boost the storage of lipid and carbohydrate. These nutrient-status-induced changes in lipid and starch are underpinned by altered expression of several meta
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Wei, Shijun. "Trace Analysis of Crystalline Silica Aerosol Using Vibrational Spectroscopy." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1595849455064302.

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38

Diehn, Sabrina Maria. "Analysis of data from multimodal chemical characterizations of plant tissues." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/23065.

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Die Vorverarbeitung und Analyse von spektrometrischen und spektroskopischen Daten von Pflanzengewebe sind in den unterschiedlichsten Forschungsbereichen wie der Pflanzenbiologie, Agrarwissenschaften und Klimaforschung von großer Bedeutung. Der Schwerpunkt dieser Arbeit liegt auf der optimierten Nutzung von Daten von Pflanzengeweben, insbesondere der Daten gewonnen durch Matrix–Assistierte Laser–Desorption–Ionisierung Massenspektrometrie, Raman-Spektroskopie und Fourier-Transform-Infrarotspektroskopie. Die Klassifizierungsfähigkeit mit diesen Methoden wird insbesondere nach Kombination der Date
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39

Perston, Benjamin Blair. "Infrared Reflection-Absorption Spectrometry and Chemometrics for Quantitative Analysis of Trace Pharmaceuticals on Surfaces." Thesis, University of Canterbury. Chemistry, 2006. http://hdl.handle.net/10092/1330.

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Cleaning validation, in which cleaned surfaces are analysed for residual material, is an important process in pharmaceutical manufacturing and research facilities. Current procedures usually consist of either swab or rinse-water sampling followed by analysis of the samples. The analysis step is typically either rapid but unselective (conductivity, pH, total organic carbon, etc.), or selective but time-consuming (HPLC). This thesis describes the development of an in situ surface-spectroscopic analysis that removes the need for swab sampling and is both rapid and selective. This method has the p
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Phala, Adeela Colyne. "Application of multivariate regression techniques to paint: for the quantitive FTIR spectroscopic analysis of polymeric components." Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/733.

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Thesis submitted in fulfilment of the requirements for the degree Master of Technology Chemistry in the Faculty of (Science) Supervisor: Professor T.N. van der Walt Bellville campus Date submitted: October 2011<br>It is important to quantify polymeric components in a coating because they greatly influence the performance of a coating. The difficulty associated with analysis of polymers by Fourier transform infrared (FTIR) analysis’s is that colinearities arise from similar or overlapping spectral features. A quantitative FTIR method with attenuated total reflectance coupled to multivariate/ ch
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Almeida, Frederico Ozanan Tomaz de. "Alterações dos espectros FTIR da água marinha por eletrodifusão e tratamentos térmicos." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2015. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=346.

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Nenhuma<br>O berilo, Be3Al2(SiO3)6, é um mineral-gema com ampla variedade de cores, algumas das quais podem ser induzidas ou alteradas por exposição à radiação ionizante, ao calor ou por eletrodifusão. Impurezas cromóforas estão relacionadas com as cores dos berilos. Há grande interesse em relação aos métodos de tratamento para alteração ou melhoramento das cores. Há indícios de que a espectroscopia na região do infravermelho por transformada de Fourier (FTIR) pode contribuir para prever o comportamento dos berilos quando submetidos a tratamentos para alteração da cor. Neste trabalho, observou
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Benetti, Carolina. "Estudo da reparação óssea por espectroscopia ATR-FTIR após remoção de fragmento da região mandibular com laser de Er,Cr:YSGG ou broca multilaminada." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-30092014-104657/.

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A reparação óssea é um fator crítico para o sucesso de procedimentos odontológicos e ortopédicos que necessitem do corte ósseo, sendo desejado que esta ocorra de forma rápida e eficaz. Uma maior compreensão da reparação óssea em um nível estrutural e molecular é o primeiro passo para o desenvolvimento de técnicas de corte e terapias regenerativas. Neste contexto, a técnica de FTIR possibilita obter informações sobre a estrutura e composição de tecido mineralizado. O principal objetivo deste projeto foi verificar a eficácia da espectroscopia FTIR na caracterização de diferentes estágios da repa
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Sierra, Cadavid Andrea. "Multicomponent Quality Control Analysis for the Tomato Industry Using PortableMid-Infrared (MIR) Spectroscopy." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397132123.

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Wilcox, Kieaibi. "Using regression analyses for the determination of protein structure from FTIR spectra." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/using-regression-analyses-for-the-determination-of-protein-structure-from-ftir-spectra(1ad037eb-f237-4efe-867a-597239bd913e).html.

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One of the challenges in the structural biological community is processing the wealth of protein data being produced today; therefore, the use of computational tools has been incorporated to speed up and help understand the structures of proteins, hence the functions of proteins. In this thesis, protein structure investigations were made through the use of Multivariate Analysis (MVA), and Fourier Transformed Infrared (FTIR), a form of vibrational spectroscopy. FTIR has been shown to identify the chemical bonds in a protein in solution and it is rapid and easy to use; the spectra produced from
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Koyuncu, Emre. "Expression, Purification, And Functional Analysis Of Adenovirus Type 5 E4 Orf3 Protein." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605415/index.pdf.

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In this study, structural and functional aspects of adenovirus type 5 (Ad5) E4orf3 protein were analyzed by biophysical and biochemical methods. Ad5 is one of the mostly used gene therapy vectors to date. However, some of its proteins possess oncogenic potential and their presence comprises safety risks. E4orf3 is one of the oncoproteins of Ad5. It also takes important roles in viral infection, and is beneficial for therapy vectors. Therefore, understanding the functions of E4orf3 is very important for developing efficient and safe adenovirus vectors. Most of the present knowledge about the f
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McIntee, Erin. "FORENSIC ANALYSIS OF AUTOMOBILE PAINTS BY ATOMIC AND MOLECULAR SPECTROSCOPIC METHODS AND STATISTICAL DATA ANALYSES." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3131.

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The analysis of 110 automotive paint samples was conducted for the research presented here. Laser-induced breakdown spectroscopy (LIBS) was the central instrument utilized for analysis although scanning electron microscopy / energy dispersive x-ray spectroscopy (SEM/EDS) and Fourier transform infrared spectroscopy &#150; attenuated total reflection (FTIR-ATR) analyses were also performed. Two separate methods of LIBS analysis of samples were used: a cross sectional analysis and a drill down analysis. SEM/EDS analysis focused on the cross section while FTIR-ATR analysis concentrated on the clea
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Stenlid, Aron. "Cloud Observations at a Coastal site – Analysis of Ceilometer Measurements from Östergarnsholm, Sweden." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-380863.

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In this study, four and a half months of ceilometer data from Östergarnsholm are used to analyze cloud related to processes in the boundary layer. Measurements are divided into two categories, which are defined by wind direction: a continental and a marine sector. The results show that there are significant differences in the height of the lowest cloud bases detected for the two sectors, where cloud base heights are lower for the marine wind sector during unstable and neutral conditions. The ceilometer’s ability to detect several cloud base heights simultaneously is utilized to test whether a
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O'Mahoney, T. Karl P. "An investigation of perfluorocarbons and bromofluorosilanes : pyrolysis, GC-ECD, GC-MS, FTIR and microwave spectroscopic studies and analysis." Thesis, University of Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259467.

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Wiles, Kenton Broyhill. "Determination of Reactivity Ratios for Acrylonitrile/Methyl Acrylate Radical Copolymerization Via Nonlinear Methodologies Using Real Time FTIR." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/34888.

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Reactivity ratios for the homogeneous free radical initiated copolymerization of acrylonitrile and methyl acrylate were measured by NMR on isolated, low conversion copolymers and by real time in situ FTIR. The system utilized azobisisobutyronitrile (AIBN) initiator in dimethyl formamide (DMF) at 62°. The FTIR technique allowed rapid generation of extensive copolymer compositions, which permitted application of nonlinear least squares methodology for the first time to this copolymer system. Thus, reactivity ratios at the 95% confidence level were determined to be 1.29 ± 0.2 and 0.96 ± 0.2
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Sharp, Michael D. "Analysis of Vanilla Compounds in Vanilla Extracts and Model Vanilla Ice Cream Mixes Using Novel Technology." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1258043461.

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