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Dissertations / Theses on the topic 'Near infrared spectra (NIR)'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 May 2024

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1

TEGEGN, DAGMAWI DELELEGN. "Process of analyzing organic materials, based on processing of near infrared spectra through advanced methods." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/404832.

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La spettroscopia nel vicino infrarosso è una tecnica abbastanza sviluppata che continua a dimostrare progressi costanti. Questo grazie agli sviluppi di nuovi spettrometri miniaturizzati d'avanguardia. Questi spettrometri possono generare rapidamente un volume elevato di dati spettrali, richiedendo metodologie avanzate come intelligenza artificiale, big data e deep learning per decifrare il contenuto nascosto di questi dati spettrali. Questa ricerca sperimentale si concentra su uno spettrometro miniaturizzato basato sulla tecnologia MEMS e sulla sua applicazione in vari campi. Dimostriamo che l

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2

Piecuch, Scott. "A Fast NIR Spectrometer for Examining Explosive Events: Emission of PETN Based Explosives and H₂O Absorption Method Feasibility." [Milwaukee, Wis.] : e-Publications@Marquette, 2009. http://epublications.marquette.edu/theses_open/13.

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3

Laroussi-Mezghani, Sonda. "Biodiversité des huiles d'olive vierges tunisiennes : valorisation à travers une démarche de qualité (Tunolival)." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4393.

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Dans un objectif de valorisation des huiles d’olive tunisiennes, les huiles de huit variétés autochtones : Chemchali, Chemlali Sfax, Chemlali Zarzis, Chétoui, Oueslati, Sayali, Zalmati et Zarrazi ont été étudiées et caractérisées par des techniques spectroscopique et chromatographique en tenant compte de leurs composés mineurs (acides gras mineurs, squalène, phénols totaux et α-, β- et γ-tocophérols). Une banque de données à été créé à partir des analyses de la composition en acides gras et des spectres proche infrarouge de 516 échantillons d’huiles d’olive vierges. Quatre outils d’authentific

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Laroussi-Mezghani, Sonda. "Biodiversité des huiles d'olive vierges tunisiennes : valorisation à travers une démarche de qualité (Tunolival)." Electronic Thesis or Diss., Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4393.

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Dans un objectif de valorisation des huiles d’olive tunisiennes, les huiles de huit variétés autochtones : Chemchali, Chemlali Sfax, Chemlali Zarzis, Chétoui, Oueslati, Sayali, Zalmati et Zarrazi ont été étudiées et caractérisées par des techniques spectroscopique et chromatographique en tenant compte de leurs composés mineurs (acides gras mineurs, squalène, phénols totaux et α-, β- et γ-tocophérols). Une banque de données à été créé à partir des analyses de la composition en acides gras et des spectres proche infrarouge de 516 échantillons d’huiles d’olive vierges. Quatre outils d’authentific

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5

Rossini, Karina. "Seleção de variáveis no desenvolvimento, classificação e predição de produtos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/37395.

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O presente trabalho apresenta proposições para seleção de variáveis em avaliações sensoriais descritivas e de espectro infravermelho que contribuam com a indústria de alimentos e química através da utilização de métodos de análise multivariada. Desta forma, os objetivos desta tese são: (i) Estudar as principais técnicas de análise multivariada de dados, como são comumente organizadas e como podem contribuir no processo de seleção de variáveis; (ii) Identificar e estruturar técnicas de análise multivariada de dados de forma a construir um método que reduza o número de variáveis necessárias para

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6

Yousefi, Gharebaghi Farzad. "Near Infrared (NIR) Spectroscopic Assessment of Engineered Cartilage." Diss., Temple University Libraries, 2017. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/477078.

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Bioengineering<br>Ph.D.<br>Articular cartilage has limited intrinsic healing capacity due to its dense and avascular structure. Clinical approaches have been developed to address the limitations associated with the poor ability of articular cartilage to regenerate. Current clinically approved techniques, however, can result in repair tissue that lacks appropriate hyaline cartilage biochemical and biomechanical properties, which lead to uncertain long-term clinical outcomes. Using tissue engineering strategies and a range of scaffolding materials, cell types, growth factors, culture conditions,

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7

Zhao, Shuyan. "Face analysis under near infrared illumination." Göttingen Cuvillier, 2008. http://d-nb.info/990811492/04.

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8

Montes, Juan Manuel. "Application of near-infrared spectroscopy in plant breeding programs." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:100-opus-1735.

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9

Pramanik, Goutam [Verfasser]. "Near InfraRed (NIR) nanoemitters for bioimaging applications / Goutam Pramanik." Ulm : Universität Ulm. Fakultät für Naturwissenschaften, 2014. http://d-nb.info/1049238583/34.

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10

Manley, Marena. "Wheat hardness by near infrared (NIR) spectroscopy : new insights." Thesis, University of Plymouth, 1995. http://hdl.handle.net/10026.1/2542.

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The determination of wheat hardness by the evaluation of whole wheat grain would be of considerable value to the UK Milling Industry. Until now, accurate whole wheat grain hardness predictions by NIR spectroscopy have only been reported for North American wheats. By the evaluation of selected samples of UK and North American wheats this study showed that the prediction of whole wheat grain hardness by NTR spectroscopy depends only on the scattering properties of the sample and that there is no direct relationship with chemical composition. The scattering effect, in case of whole wheat grain re

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11

Molina, Keith M. (Keith Martin). "A battery powered near infrared (NIR) camera for the MIT HelioDome." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45325.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.<br>Includes bibliographical references (p. 99).<br>Research in advanced fenestration systems has led to the development of the Heliodome project at the Massachusetts Institute of Technology Daylighting Laboratory. The MIT Heliodome project is dedicated to goniophotometry and the assessment of bidirectional photometric properties of light- (or heat-)redirecting facade systems by using digital cameras as multiple-points photosensors, that cover the visible and near infrared portions of the sunlight spect

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12

Li, Tianyi. "Near Infrared Boron Dipyrromethene as Donor Materials for Vacuum-processed Organic Solar Cells." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-234236.

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Organic solar cell (OSC) has been an active research field over the past decades, due to their intrinsic advantages, such as low consumption of materials and energy, the applicability on flexible substrates and the degradability of the organic components. Compared with the solution processing technology using polymers as electron donor materials, small molecule vacuum deposition is regarded as a promising fabrication method, avoiding the use of toxic aromatic solvents and guaranteeing constant batch-to-batch performance. Moreover, it is much easier to realize multi-junction tandem solar cells

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13

Winn, Olivia, and Sivaram Kiran Thekkemadathil. "Near-Infrared Spectral Measurements and Multivariate Analysis for Predicting Glass Contamination of Boiler Fuel." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-36058.

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This degree project investigates how glass contamination in refuse-derived fuel for a fluidised bed boiler can be detected using near-infrared spectroscopy. It is motivated by the potential to reduce greenhouse gas emissions by replacing fossil fuels with refuse-derived fuel. The intent was to develop a multivariate predictive model of near-infrared spectral data to detect the presence of glass cullet against a background material that represents refuse-derived fuel. Existing literature was reviewed to confirm the usage of near-infrared spectroscopy as a sensing technology and determine the ne

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14

Mayfield, Angela Raye. "Characterization of textile materials by near-infrared relectance spectroscopy." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/8616.

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15

O'Neil, Andrew James. "Multivariate statistical quality control of a pharmaceutical manufacturing process using near infrared spectroscopy and imaging microscopy." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341802.

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16

Riovanto, Roberto. "Near infrared spectroscopy in food analysis: qualitative and quantitative approaches." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427409.

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“Food quality” is a very wide issue and sometimes it is also difficult to define. Food is generally a complex mixture of chemical compounds and physical properties which make up its characteristics. The determination of quality of such complicated systems is usually very difficult considering that the available analytical techniques can evaluate one constituent at a time and they cannot provide a response useful to define the general concept of “quality”. Furthermore, these techniques are often very expensive. They need sophisticated instrumentations and trained analysts. Near infrared spectro

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17

Bai, Chuannan. "Noninvasive near infrared spectroscopy on living tissue with multivariate calibration approaches." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/776.

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Near infrared (NIR) spectroscopy is being developed on living tissue models for noninvasively measuring in vivo glucose concentrations in individuals with diabetes. Multivariate calibration models have been built and the selectivity of each multivariate signature has been evaluated by several means. The primary objective of the research detailed in this dissertation is to practically apply noninvasive NIR glucose measurements on animal models for both short-term and long-term studies and preview future human subject evaluations. In the animal study, living tissue spectra were collected through

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18

Vilenius, Esa. "On the analysis of near-infrared point spectrometer data for the investigation of lunar surface mineralogy." [Katlenburg-Lindau] Copernicus Publ.***5004719, 2009. http://d-nb.info/996869182/04.

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19

Faerber, Timothy. "Properties of Near-Infrared Type Ia Supernovae Light Curves." Thesis, Uppsala universitet, Observationell astrofysik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-421195.

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As a result of the standardizability of SNe Ia light curves over a wide range of photometric bands, they are used as standard candles to accurately measure distances in the cosmos up to z ≈ 1 [22]. As dust extinction is smaller in the NIR than in the optical [21] there is less dispersion seen in the peak brightnesses of SNe Ia, making them truly standard candles. We use SNPY to fit light curves for 192 SNe Ia. The mean of all Hubble residuals of our sample is ≈ 0.101 mag with a standard deviation of ≈ 0.234 mag. After applying an original set of cuts, the mean of 173 Hubble residuals reduces t

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Roux, Evette. "Near infrared (NIR) spectroscopy for selection of malting barley in South African breeding programmes." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6871.

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21

Al, Hamrani Emad, and Nemir Gibrael. "Fast determination of fuel/feedstock material properties and composition : By Near infrared (NIR) spectroscopy." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-33522.

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22

Qian, Li-Ren. "Characterization of polyethylene terephthalate heat set carpet yarn by near infrared reflectance spectroscopy." Thesis, Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/9208.

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23

Terhoeven-Urselmans, Thomas. "Usefulness of near infrared spectroscopy to assess the composition and properties of soil, litter and growing media." Kassel Kassel Univ. Press, 2007. http://d-nb.info/986594725/34.

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24

Peshlov, Boyan N. "Infestation Detection in Wild Blueberries Using Near Infrared Spectra and Multivariate Data Analysis." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/PeshlovBN2008.pdf.

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25

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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26

Trippe, Sascha. "Ten thousand stars and one black hole : a study of the galactic center in the near infrared /." Lichtenberg (Odw.) : Harland Media, 2008. http://deposit.d-nb.de/cgi-bin/dokserv?id=3104931&prov=M&dokv̲ar=1&doke̲xt=htm.

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27

Davis, Christopher Brent Busch Kenneth W. Busch Marianna A. "Application of chemometric analysis to UV-visible and diffuse near-infrared reflectance spectra." Waco, Tex. : Baylor University, 2007. http://hdl.handle.net/2104/5042.

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28

Terhoeven-Urselmans, Thomas. "Usefulness of near-infrared spectroscopy to assess the composition and properties of soil, litter and growing media." Kassel Kassel Univ. Press, 2006. http://www.uni-kassel.de/hrz/db4/extern/dbupress/publik/abstract.php?978-3-89958-270-3.

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29

Porep, Jan Ulrich [Verfasser]. "Application of near infrared (NIR) spectroscopy for rapid quality assessment of grape mashes / Jan Ulrich Porep." Aachen : Shaker, 2015. http://d-nb.info/1070151904/34.

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30

Williams, Paul James. "Near infrared (NIR) hyperspectral imaging for evaluation of whole maize kernels: chemometrics for exploration and classification." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1696.

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Thesis (Msc Food Sc (Food Science))--University of Stellenbosch, 2009.<br>The use of near infrared (NIR) hyperspectral imaging and hyperspectral image analysis for distinguishing between whole maize kernels of varying degrees of hardness and fungal infected and non-infected kernels have been investigated. Near infrared hyperspectral images of whole maize kernels of varying degrees of hardness were acquired using a Spectral Dimensions MatrixNIR camera with a spectral range of 960-1662 nm as well as a sisuChema SWIR (short wave infrared) hyperspectral pushbroom imaging system with a spectral ran

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Porep, Jan [Verfasser]. "Application of near infrared (NIR) spectroscopy for rapid quality assessment of grape mashes / Jan Ulrich Porep." Aachen : Shaker, 2015. http://nbn-resolving.de/urn:nbn:de:101:1-201504266953.

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32

Osunnuyi, Olufemi Adetunji. "Model predictive control of an exothermic batch reactor using near infrared (NIR) spectroscopic measurements as feedback." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/model-predictive-control-of-an-exothermic-batch-reactor-using-near-infrared-nir-spectroscopic-measurements-as-feedback(adf06eb7-438d-4635-a9a4-e2f5f0872693).html.

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Batch and semi-batch processes provide needed flexibility for multi-product plants, especially when products change frequently and production quantities are small. However, challenges occur when trying to implement reliable control systems in batch processes due to some unavoidable inherent characteristics such as the presence of time-varying and nonlinear batch process dynamics and a host of unmeasured disturbances. The most typical control strategy employed in batch process operations does not use utilise online measurements of variables directly related to the product quality and as such is

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Liu, Lanfa, Manfred Buchroithner, Min Ji, Yunyun Dong, and Rongchung Zhang. "Quantitative Retrieval of Organic Soil Properties from Visible Near-Infrared Shortwave Infrared (Vis-NIR-SWIR) Spectroscopy Using Fractal-Based Feature Extraction." Molecular Diversity Preservation International (MDPI), 2016. https://tud.qucosa.de/id/qucosa%3A30203.

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Visible and near-infrared diffuse reflectance spectroscopy has been demonstrated to be a fast and cheap tool for estimating a large number of chemical and physical soil properties, and effective features extracted from spectra are crucial to correlating with these properties. We adopt a novel methodology for feature extraction of soil spectroscopy based on fractal geometry. The spectrum can be divided into multiple segments with different step–window pairs. For each segmented spectral curve, the fractal dimension value was calculated using variation estimators with power indices 0.5, 1.0 and 2

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Liu, Lanfa, Manfred Buchroithner, Min Ji, Yunyun Dong, and Rongchung Zhang. "Quantitative Retrieval of Organic Soil Properties from Visible Near-Infrared Shortwave Infrared (Vis-NIR-SWIR) Spectroscopy Using Fractal-Based Feature Extraction." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-220555.

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Visible and near-infrared diffuse reflectance spectroscopy has been demonstrated to be a fast and cheap tool for estimating a large number of chemical and physical soil properties, and effective features extracted from spectra are crucial to correlating with these properties. We adopt a novel methodology for feature extraction of soil spectroscopy based on fractal geometry. The spectrum can be divided into multiple segments with different step–window pairs. For each segmented spectral curve, the fractal dimension value was calculated using variation estimators with power indices 0.5, 1.0 and 2

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Joshi, Prabesh. "SUPERVISED CLASSIFICATION OF FRESH LEAFY GREENS AND PREDICTION OF THEIR PHYTOCHEMICAL CONTENTS USING NEAR INFRARED REFLECTANCE." OpenSIUC, 2018. https://opensiuc.lib.siu.edu/theses/2467.

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There is an increasing need of automation for routine tasks like sorting agricultural produce in large scale post-harvest processing. Among different kinds of sensors used for such automation tasks, near-infrared (NIR) technology provides a rapid and effective solution for quantitative analysis of quality indices in food products. As industries and farms are adopting modern data-driven technologies, there is a need for evaluation of the modelling tools to find the optimal solutions for problem solving. This study aims to understand the process of evaluation of the modelling tools, in view of n

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36

Dahlman, Niclas. "Near Infrared Spectroscopy : An Introductory Study On Measurement Techniques And Tools For Analysing Moisture Content In Pulp And Paper Media." Thesis, Karlstads universitet, Avdelningen för kemiteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-16099.

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The growing technique of near infrared spectroscopy is used to build fundamental knowledge of how the method might be applied for moisture determination in pulp and paper media. Filter paper was used to investigate the angle and distance dependence, otherwise obscured by the uneven surface of pulp or dry fibers. For contact measurements both filter paper and CTMP-fibers were used. The angle and distance evaluation is based on visual spectral interpretation to later incorporate preprocessing methods of the data followed by a multivariate analysis using PLS. With the knowledge built before the e

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37

Strindlund, Olle. "Evaluation of Homogeneity in Drug Seizures Using Near-Infrared (NIR) Hyperspectral Imaging and Principal Component Analysis (PCA)." Thesis, Linköpings universitet, Kemi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-166747.

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The selection of a representative sample is a delicate problem when drug seizures comprised of large number of units arrive at the Swedish National Forensic Centre (NFC). If deviating objects in the selected sample size are found, additional analyzes are required to investigate how representative the results are for the entire population. This generates further pressure on operational analysis flow. With the goal to provide a tool which forensic scientists at NFC can base their assessment of the representative nature of the selected sampling of large drug seizures on, this project investigated

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Swart, Etheresia, and Maryna Lehmann-Maritz. "Evaluation of near infrared reflectance (NIR) spectroscopy to determine the nutrient composition of raw materials and compound ostrich feeds." Thesis, Nelson Mandela University, 2017. http://hdl.handle.net/10948/13779.

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The chemical analysis of feed samples can be time consuming and expensive. The use of near infrared reflectance (NIR) spectroscopy was evaluated in a range of studies as a rapid technique to predict the chemical constituents in feedstuffs and compound ostrich feeds. The prediction of accurate results by NIR spectroscopy relies heavily upon obtaining a calibration set which represents the variation in the main population, accurate laboratory analyses and the application of the best mathematical procedures. This research project was designed to meet five objectives: The first objective was to de

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Vidas, Dario. "Performance Evaluation of Stereo Reconstruction Algorithms on NIR Images." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-191148.

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Stereo vision is one of the most active research areas in computer vision. While hundreds of stereo reconstruction algorithms have been developed, little work has been done on the evaluation of such algorithms and almost none on evaluation on Near-Infrared (NIR) images. Of almost a hundred examined, we selected a set of 15 stereo algorithms, mostly with real-time performance, which were then categorized and evaluated on several NIR image datasets, including single stereo pair and stream datasets. The accuracy and run time of each algorithm are measured and compared, giving an insight into whic

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Liu, Lanfa, Min Ji, and Manfred F. Buchroithner. "Combining Partial Least Squares and the Gradient-Boosting Method for Soil Property Retrieval Using Visible Near-Infrared Shortwave Infrared Spectra." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-232271.

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Soil spectroscopy has experienced a tremendous increase in soil property characterisation, and can be used not only in the laboratory but also from the space (imaging spectroscopy). Partial least squares (PLS) regression is one of the most common approaches for the calibration of soil properties using soil spectra. Besides functioning as a calibration method, PLS can also be used as a dimension reduction tool, which has scarcely been studied in soil spectroscopy. PLS components retained from high-dimensional spectral data can further be explored with the gradient-boosted decision tree (GBDT) m

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Liu, Lanfa, Min Ji, and Manfred F. Buchroithner. "Combining Partial Least Squares and the Gradient-Boosting Method for Soil Property Retrieval Using Visible Near-Infrared Shortwave Infrared Spectra." Molecular Diversity Preservation International (MDPI), 2017. https://tud.qucosa.de/id/qucosa%3A30734.

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Soil spectroscopy has experienced a tremendous increase in soil property characterisation, and can be used not only in the laboratory but also from the space (imaging spectroscopy). Partial least squares (PLS) regression is one of the most common approaches for the calibration of soil properties using soil spectra. Besides functioning as a calibration method, PLS can also be used as a dimension reduction tool, which has scarcely been studied in soil spectroscopy. PLS components retained from high-dimensional spectral data can further be explored with the gradient-boosted decision tree (GBDT) m

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42

September, Danwille Jacqwin Franco. "Detection and quantification of spice adulteration by near infrared hyperspectral imaging." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6624.

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Thesis (MSc Food Sc)--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: Near infrared hyperspectral imaging (NIR HSI) in conjunction with multivariate image analysis was evaluated for the detection of millet and buckwheat flour in ground black pepper. Additionally, midinfrared (MIR) spectroscopy was used for the quantification of millet and buckwheat flour in ground black pepper. These techniques were applied as they allow non-destructive, invasive and rapid analysis. Black pepper and adulterant (either millet or buckwheat flour) mixtures were made in 5% (w/w) increments spanning th

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Washenfelder, Rebecca Ann Wennberg Paul O. "Column abundances of carbon dioxide and methane retrieved from ground-based near-infrared solar spectra /." Diss., Pasadena, Calif. : Caltech, 2006. http://resolver.caltech.edu/CaltechETD:etd-06022006-103523.

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44

Keeffe, Eloise Caitlin. "Rapid nutrient determination of sugarcane milling by-products using near infrared spectroscopy." Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/63980/1/Eloise_Keeffe_Thesis.pdf.

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This thesis investigates the use of near infrared (NIR) spectroscopic methods for rapid measurement of nutrient elements in mill mud and mill ash. Adoption of NIR-based analyses for carbon, nitrogen, phosphorus, potassium and silicon will allow Australian sugarcane farmers to comply with recent legislative changes, and act within recommended precision farming frameworks. For these analyses, NIR spectroscopic methods surpass several facets of traditional wet chemistry techniques, dramatically reducing costs, required expertise and chemical exposure, while increasing throughput and access to dat

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Saul, Kaelin E. "Development of NIR spectroscopy models for starch content prediction and ethanol production from mutant grain sorghum." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/32553.

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Master of Science<br>Biological & Agricultural Engineering<br>Donghai Wang<br>The growing demands for renewable energy sources have led researchers to investigate other biomass sources, aside from maize. Grain sorghum is comparable to maize in its starch content and can be grown in regions with drier climates, where maize is a less suitable crop for these areas. In attempts to increase yield prior to harvest and for ethanol production, this study focuses on mutant grain sorghum. One hundred and nine mutant grain sorghum samples were analyzed for their chemical and physical properties and fe

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Brandén, Carl-Magnus. "Determination of the Degree of Oxidation in Dialdehyde Cellulose Using Near Infrared Spectroscopy." Thesis, Karlstads universitet, Avdelningen för kemiteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-55258.

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The purpose of this thesis work was to investigate possible in-, on- or at-line methods to determine the degree of oxidation in dialdehyde cellulose. Several technologies were reviewed which led to a feasibility study into a possible on-line or at-line method using near infrared spectroscopy for determining the degree of oxidation in wet dialdehyde cellulose. A calibration model was built using the near infrared spectra of 19 samples created from kraft pulp with a degree of oxidation between 0 and 52.1 %. The obtained model uses five significant principal components and has a goodness of fit (

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Akin, Ryan E. "Minimally invasive assessment of lymphatic pumping pressure using near infrared imaging." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47536.

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Although the major functions of the lymphatic system are fairly well defined, its vasculature has yet to be well characterized in comparison to its blood vasculature counterpart. Recent advances in optical imaging techniques have allowed for more detailed and quantitative evaluations of lymph flow dynamics and mechanism. A rat tail is often used for investigations of lymph flow because of the simple geometry, superficial nature, and disease progression models of its collecting lymphatic vessels. In this study, a pressure cuff system was fabricated and coupled with an existing functional near i

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BUCCHERI, NUNZIO FRANCESCO. "Design and synthesis of small molecules for NIR-operating light emitting and sensing devices." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2016. http://hdl.handle.net/10281/105354.

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Organic chemistry of dyes and pigments offers a large number of synthetic tools for the production of innovative compounds to match the requirements of modern materials science. Near-infrared portion of the spectrum (700-2500 nm) is of particular interest, with application in bioimaging, photodynamic therapy, night vision, telecommunications and sensors. Among the thousands of different organic structure present in the literature, organic complexes of neutral tetrahedral boron (III), subphthalocyanine, squaraines and rare-earths complexes show attractive spectroscopic and chemical behavior suc

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Afara, Isaac Oluwaseun. "Near infrared spectroscopy for non-destructive evaluation of articular cartilage." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/53217/1/Isaac_Afara_Thesis.pdf.

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There is a need for an accurate real-time quantitative system that would enhance decision-making in the treatment of osteoarthritis. To achieve this objective, significant research is required that will enable articular cartilage properties to be measured and categorized for health and functionality without the need for laboratory tests involving biopsies for pathological evaluation. Such a system would provide the capability of access to the internal condition of the cartilage matrix and thus extend the vision-based arthroscopy that is currently used beyond the subjective evaluation of surgeo

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Clua, Palau Glòria. "Application of quality by design and near infrared spectroscopy in manufacturing and control of freeze-dried drug products." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/663954.

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Esta tesis describe la aplicación de la aproximación de Calidad por Diseño para el desarrollo y cualificación del proceso de liofilización de dos productos farmacéuticos, denominados IFDA e IFDB, desarrollados en la empresa Laboratorios Reig Jofre. IDFA está formado por un único principio activo, y se presenta en dos dosificaciones, mientras que IDFB es más complejo ya que, además del principio activo, contiene un excipiente. El proceso de liofilización se utiliza para transformar disoluciones de principios activos en productos sólidos más estables. Es un proceso lento y costoso, por lo tanto

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