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Dissertations / Theses on the topic 'Infrared spectrophotometers'

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Published: 4 June 2021

Last updated: 28 July 2025

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1

Andrew, Anne. "Standardisation of near infrared spectrophotometers." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1444341/.

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A near infrared (NIR) spectrometer produces, from a single sample, a spectrum formed from several hundred absorbance readings at a range of wavelengths in the NIR region. Using regression approaches and a large number of samples for which reference values and spectra are known, the instrument can be calibrated to predict reference values from spectra. A problem with NIR spectrometers is that no two instruments produce exactly the same output, as a result of which a calibration developed on one instrument cannot be transferred to a second instrument unless the second instrument has been standar

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2

Gómez, Leal Illeana. "Spectrophotometry of the infrared emission of Earth-like Planets." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2013. http://tel.archives-ouvertes.fr/tel-00962379.

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Le signal thermique d'une exoplanète tellurique est une clé pour caractériser les propriétés physiques et chimiques de son atmosphère. La résolution spectrale, et donc la caractérisation spectrale que nous pouvons réaliser des planètes extrasolaires, est malheureusement très limité, en particulier pour les planètes similaires à la Terre. Dans cette thèse, j'ai étudié la possibilité de caractériser des exoplanètes telluriques par l'analyse de la variabilité de son émission infrarouge. L'émission thermique apparente est en effet modulée par les saisons, la rotation de la planète, le mouvement et

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3

Hammersley, Peter Laurence. "Near infrared spectrophotometry and the 2.2 micron galactic survey." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46330.

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4

Mayes, David M. "Applications of a photodiode array spectrophotometer for the short wavelength near-infrared region (700-1100 nm) /." Thesis, Connect to this title online; UW restricted, 1990. http://hdl.handle.net/1773/11567.

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5

Procter, Alison Mary. "Near infrared spectrophotometry for the in vitro study of cellular metabolic activity." Thesis, Keele University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245353.

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6

Kuzenko, Yevhen Viktorovych, Анатолій Миколайович Романюк, Анатолий Николаевич Романюк, et al. "Periodontal DNA changes under the influence of CR6+, study by infrared spectrophotometry." Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/35930.

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The infrared spectroscopy is widely used for gathering structural information on biological systems, but not used in periodontitis researchers. The study of DNA by infrared spectroscopy requires peeled DNA samples. The infrared spectrs of DNA show many characteristic: denaturation, alkylation, dehydration and conformational transition. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35930

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7

Touhami, Yamina. "Circumstellar Disks Around Rapidly Rotating Be-Type Stars." Digital Archive @ GSU, 2012. http://digitalarchive.gsu.edu/phy_astr_diss/53.

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Be stars are rapidly rotating B-type stars that eject large amounts of material into a circumstellar disk. Evidence of the presence of a disk is found through hydrogen emission lines in their spectra, IR excess flux, and linear intrinsic polarization. In this dissertation, we report the first simultaneous interferometric and spectroscopic observations of circumstellar disks around 24 bright Be stars made using the techniques of long baseline interferometry and moderate resolution spectroscopy in the near infrared. The goal of the project is to characterize the fundamental geometrical and physi

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8

Phiri, Mohau Justice. "On-line monitoring of base metals solutions in flotation using diffuse reflectance spectrophotometry." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5173.

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Thesis (MScEng (Process Engineering))--University of Stellenbosch, 2010.<br>Thesis submitted in partial fulfilment of the requirements for the degree of MASTER OF SCIENCE IN ENGINEERING (MINERAL PROCESSING) in the Department of Processing Engineering at the University of Stellenbosch<br>ENGLISH ABSTRACT: This work evaluates the use of inverse least squares (ILS) and classical least squares (CLS) models for calibration of a diffuse reflectance spectrophotometer for on-line monitoring of the aqueous phase in a flotation cells. Both models use a Beer's law for the quantification of the meta

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9

Burger, James. "Hyperspectral NIR image analysis : data exploration, correction, and regression /." Umeå : Unit of Biomass Technology and Chemistry, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200660.pdf.

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10

Azevedo, Luiz Otavio Roffee. "Infra-Red Spectrophotometry and X-Ray Diffractometry as Tools in the Study of Nickel Laterites." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/231213.

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Nickel silicate laterite deposits developed on ultra-mafic rocks are similar in many general respects but they vary considerably in detail. The mineralogy of these surficial deposits is very complex and difficult to determine because of the fine grained nature and solid solution characteristics of the hydrous secondary minerals and because many of the phases are actually mineraloids that are poorly ordered or amorphous. To try some new approaches toward clarification of these phases, 24 samples from New Caledonia and Puerto Rico ranging from the ophiolite-ultramafic olivine-pyroxene-chromite-s

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11

Lennartsson, Mattias. "Cold hardening and dehardening in Salix /." Umeå : Dept. of Forest Genetics and Plant Physiology, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s279.pdf.

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12

Eriksson, Daniel. "Wood - an anatomical structure in the tree and an engineering material in industry : prediction of material properties in managed Scots pine stands in the forest /." Umeå : Dept. of Forest Ecology and Management, Swedish University of Agricultural Sciences, 2008. http://epsilon.slu.se/200873.pdf.

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13

Wetterlind, Johanna. "Improved farm soil mapping using near infrared reflection spectroscopy." Uppsala : Dept. of Soil and Environment, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200968.pdf.

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14

Tigabu, Mulualem. "Characterization of forest tree seed quality with near infrared spectroscopy and multivariate analysis /." Umeå : Dept. of Silviculture, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s274.pdf.

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15

Fernandes, Júnior Virgílio Vilas Boas [UNESP]. "Avaliação da resistência adesiva e características da zircônia após diferentes tratamentos de superfície." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/152014.

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16

Ulvcrona, Thomas. "Impregnation of Norway spruce (Picea abies L. Karst.) wood with hydrophobic oil /." Umeå : Dept. of Silviculture, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200688.pdf.

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17

Allen, Jamison. "Use of a portable near-infrared spectrophotometer to predict nutrient composition of feces from feedlot Holstein cattle and its applicability for on-site research and industry use." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/145464.

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Two studies were performed to investigate the ability of a portable near-infrared spectrophotometer (NIRS) for on-site analysis of nutrient components in feces from cattle. In trial 1 of study 1, growing dairy steers were fed diets containing either 86 or 90% concentrate. Regression values from a calibration set of 56 samples were promising for CP, DM, and NDF, but not for ADF or starch. In trial 2 of study 1, finishing dairy steers were fed diets containing either thick (512 g/L) or thin (460 g/L) steam-flaked corn. Regression values from a calibration set of 126 samples were poor for all nut

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18

Lestander, Torbjörn. "Multivariate NIR studies of seed-water interaction in Scots pine seeds (Pinus sylvestris L.) /." Umeå : Dept. of Silviculture, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s282.pdf.

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19

Soltani, Ali. "Improvement of seed germination of Fagus orientalis Lipsky /." Umeå : Dept. of Silviculture, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s275.pdf.

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20

Botha, Mariza. "Use of near infrared spectroscopy (NIRS) and spectrophotometric methods in quality control of green rooibos (Aspalathus Linearis) and honeybush (Cyclopia Genistoides)." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/1656.

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Thesis (MSc Food Sc) (Food Science)--University of Stellenbosch, 2005.<br>Near infrared spectroscopy (NIRS) and UV/Vis spectrophotometric methods were investigated as rapid and/or more economical methods to quantify the major monomeric phenolic compounds, soluble solid content (SSC), total polyphenol content (TPC) and total antioxidant activity (TAA) of green rooibos and Cyclopia genistoides.

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21

Giachero, Eduardo Alberto. "Construção e avaliação de um espectrofotometro infravermelho proximo (NIR) baseado em arranjo de sensores de PbS." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249952.

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Orientador: Celio Pasquini<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-15T04:25:20Z (GMT). No. of bitstreams: 1 Giachero_EduardoAlberto_M.pdf: 1521995 bytes, checksum: a202ae1d4c48dbb8607d5b36532d118a (MD5) Previous issue date: 2009<br>Resumo: Este trabalho propõe o projeto e construção de um espectrofotômetro infravermelho próximo (NIR), compacto e de baixo custo, e a avaliação do seu desempenho na determinação de propriedades físico-químicas de combustíveis líquidos derivados do petróleo, visando a utilização do

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22

Filho, Milton Lazaro. ""Viscoelasticidade em função dos modos de fotoativação de compósitos"." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/23/23140/tde-17112004-172537/.

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O escoamento viscoelástico pode contribuir ao alívio da tensão gerada durante a polimerização de compósitos aderidos em cavidades. O objetivo do estudo foi verificar a influência de dois modos de fotoativação contínua com diferentes intensidades (1000 mW/cm 2 e 250 mW/cm 2 ) e mesma densidade de energia final (24 J/cm 2 ) sobre propriedades viscoelásticas de dois compósitos comerciais (Filtek A110 e Herculite XRV) após a cura. Os parâmetros viscoelásticos avaliados foram: E (módulo de ar-mazenamento), tand (fator de perda) e as constantes reológicas t (tempo de relaxa-mento) e h (viscosidade)

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23

Jasinghege, Don Prasanna Deshapriya. "Spectrophotometric properties of the nucleus of the comet 67P/Churyumov-Gerasimenko observed by the ROSETTA spacecraft." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC007/document.

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Cette thèse s'inscrit dans le cadre de la mission spatiale Rosetta et porte sur les propriétés spectrophotométriques de la comète 67P/Churyumov-Gerasimenko à l’aide de l’instrument OSIRIS. Cet instrument est composé de deux caméras pour les observations du noyau et de la coma de la comète. Elles permettent d’acquérir des images avec des filtres qui opèrent dans la gamme du proche UV au proche IR. Dans un premier temps, j'ai analysé les courbes spectrophotométriques des taches claires qui sont apparues sur le noyau de la comète. Une étude comparative de celles-ci grâce aux données du spectro-im

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24

Hégr, Ondřej. "Charakterizace nanostruktur deponovaných vysokofrekvenčním magnetronovým naprašováním." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-233428.

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This thesis deals with the analysis of nano-structured layers deposited by high-frequency magnetron sputtering on the monocrystalline silicon surface. The content of the work focuses on the magnetron sputtering application as an alternative method for passivation and antireflection layers deposition of silicon solar cells. The procedure of pre-deposite silicon surface cleaning by plasma etching in the Ar/H2 gas mixture atmosphere is suggested. In the next step the silicon nitride and aluminum nitride layers with hydrogen content in Ar/N2/H2 gas mixture by magnetron sputtering are deposited. On

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25

Li, Wang-Sheng, and 李汪盛. "Detecting the Rice Compositions and Taste by Near-Infrared Spectrophotometers." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/92836512929294707098.

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博士<br>國立臺灣大學<br>農業機械工程學系研究所<br>86<br>The object of this research is to detect the reflection spectra of whole an d crushed paddy, whole brown rice, and whole and crushed white rice grown in T aichung area by near-infrared spectrophotometers, to analyze chemical composit ions by wet chemical methods, and to establish calibration curves of moisture content, protein content, amylose content and fat acidity for fast determinin g rice compositions. Integrating near-infrared spectrophotometers and rice ta ste

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26

CHEN, CHIH-PING, and 陳致平. "DETERMINATION OF THE PEAR QUALITY BY A NEAR-INFRARED SPECTROPHOTOMETER." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/93782244133053966941.

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碩士<br>國立臺灣大學<br>農業機械工程學系研究所<br>85<br>The object of this research is to detect the quality of Sinwater pears and New- century pears produced on the hill farm of National Taiwan University by a near- infrared spectrophotometer, to analyse the sugar contents and acidity and the ratio of sugar content to acidity of pears with chemical methods, and to establish the calibration curves for quick detecting the pear quality for grading and price marking.

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27

Lee, Tonni, and 李帥良. "Near-Infrared Spectrophotometer For Non-Invasive Blood Bio-Chemical Analysis Research." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/70273778324312327378.

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碩士<br>中國文化大學<br>應用化學研究所<br>87<br>The objective of this study was using near infrared spectrophotometer quantitative blood analyzer with low energy of the electromagnetic radiation in the wavelength range 604 ~ 1045nm to investigate the diabetes mellitus p't in Taiwan. Near infrared absorption can be analyzed by measuring the light that is reflected from a substance or transmitted through a substance. The reflected and transmitted light from near hear infrared light interactance analysis developed by the research organization of the Department of Agri

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28

Glaccum, William Joseph. "Far-infrared spectrophotometry of oxygen-rich and S-type stars /." 1999. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:9943068.

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29

Chung, Yun-Jui, and 鍾允睿. "Determining the Sugar Contents in Pineapples by a Portable Near-Infrared Spectrophotometer." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/61066626513717374466.

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碩士<br>國立臺灣大學<br>農業機械工程學系<br>86<br>The object of this research is to design a portable near-infrared spectrophotometer for detecting the intact and the pealed pineapples, analysis the sugar contents of pineapple with a sugarmeter , and to establish the calibration curves for quick detecting the pineapple sugar contents for future harvesting, grading and processing. Because there is no difference noise level detected by the designed probe with light shield and without light shield in the dark box,

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30

Peng, Zhi Ping, and 彭智平. "Determination of major constituents affecting rice taste by a near-infrared spectrophotometer." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/15442254672827735104.

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31

Liu, Min Chin, and 劉民卿. "The Detection of Rice Moisture and Protein Content with Near- Infrared Spectrophotometer." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/15533597330718047074.

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32

Kao, Hung Lin, and 高宏麟. "Development of Simple Near Infrared Spectrophotometer and the Study on Total Nitrogen of Soil Inspection." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/37939639166091552733.

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碩士<br>國立中興大學<br>生物產業機電工作學系<br>91<br>The objectives of this research is to develop a Simple Near Infrared Spectrophotometer. Test for the light source, detector and the monochromator have been done. Evaluation of the feasibility of this spectrophotometer for total nitrogen of soil has been completed as well. The results show that the developed spectrophotometer is stable. The light source and the detector are stable in a 8-hour-test. The monochromator are accurate with light wavelength separation in 550 to 1000 nm. The soil samples were made with various amounts of urea. The multiple linear reg

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33

"A new approach to identification and quantification by infrared spectrometry." Chinese University of Hong Kong, 1996. http://library.cuhk.edu.hk/record=b5888868.

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by Bai Tao.<br>Thesis (Ph.D.)--Chinese University of Hong Kong, 1996.<br>Includes bibliographical references (leaves 1-21).<br>PART I : A new approach to identification by infrared spectrometry<br>Chapter Chapter 1: --- Introduction --- p.1<br>Chapter Chapter 2 : --- Coding system of IR spectra --- p.13<br>Chapter Chapter 3 : --- Library search system of IR spectra --- p.46<br>Chapter Chapter 4 : --- Identification of pharmaceuticals by the IR database of pharmaceuticals --- p.64<br>Chapter Chapter 5 : --- Identification of Chinese mineral drugs by the IR database of Chinese mineral drugs

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34

Jenn-Yang, Jong, and 鍾鎮鍚. "The effect of Rice Temperature and Moisture Content on Detecting Rice Quality by a Near-Infrared Spectrophotometer." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/59685926594939827745.

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碩士<br>國立臺灣大學<br>農業機械工程學系<br>84<br>The object of this research is to detect the effect of temperature and moisture content on moisture, protein, amylose and fat acidity of whole-kernel rough rice of Taichung 189 Japonica-variety by a near-infrared spectrophotometer, and to establish the better calibration curves for predicting the rice quality. Between 10℃ and 40℃, experimental results showed that the temperature effect on the moisture measured by the near-infrared spectrophotometer was not

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35

Zhong, Zhen Xi, and 鍾鎮錫. "The effect of rice temperature and moisture content on detecting rice quality by a near-infrared spectrophotometer." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/64042336069158588674.

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36

Abbott, Scott John. "Photo-induced reversible changes in wettability on light sensitive pyrimidine-coated surfaces." 2000. http://arrow.unisa.edu.au:8081/1959.8/78700.

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Thin coatings of photoresponsive, pyrimidine-terminated molecules, attached to gold or quartz substrates in contact with water, undego photodimerisation and wettability changes when irradiated with UV light at 280 and 240mm. Spin-casting and chemisorption techniques were used to prepare the thin films.<br>Thesis (PhDApSc)--University of South Australia, 2000.

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37

Parisi, María Celeste. "Propiedades astrofísicas de cúmulos estelares y estrellas del campo de la Nube Menor de Magallanes /." Doctoral thesis, 2011. http://hdl.handle.net/11086/156.

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Tesis (Doctor en Astronomía)--Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física, 2011.<br>En esta tesis se han determinado las metalicidades y velocidades radiales de 15 cúmulos estelares de la Nube Menor de Magallanes y de los campos estelares circundantes a los mismos, haciendo uso de espectros en la región del CaII obtenidos con el 'Very Large Telescope' (Paranal - Chile). Por otra parte las edades de los cúmulos han sido derivadas a partir de fotometría PSF realizada sobre imágenes en los filtros V e I obtenidas con el mismo telescopio. Esta información ha sido u

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