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Dissertations / Theses on the topic 'Diode array detector'

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Published: 4 June 2021

Last updated: 26 July 2025

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1

MacQueen, Phillip J. "Solid-state image detector development : a linear diode array for astronomical spectroscopy." Thesis, University of Canterbury. Astronomy, 1986. http://hdl.handle.net/10092/8071.

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Future spectroscopic observational programmes at Mount John University Observatory require the ability to acquire spectra with significantly higher spectrophotometric accuracy and geometrical stability than can currently be achieved. Therefore a solid-state linear-diode-array image detector system has been designed and developed for use with the MJUO échelle spectrograph. A review of those electromechanical design techniques of significance to astronomical instrumentation is presented. Their application is exemplified with a complete electromechanical design for the detector, which is found t

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2

Akcoren, Dincay. "A Low-cost Uncooled Infrared Detector Array And Its Camera Electronics." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613082/index.pdf.

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This thesis presents the development of integrated readout electronics for diode type microbolometers and development of external camera electronics for microbolometers. The developed readout electronics are fabricated with its integrated 160x120 resolution FPA (Focal Plane Array) in the XFAB SOI-CMOS 1.0 &mu<br>m process. The pixels in the FPA have 70 &mu<br>m pixel pitch, and they are sensitive in the 8&ndash<br>12 &mu<br>m band of the infrared spectrum. Each pixel has 4 serially connected diodes, and diode turn on voltage changes as the temperature of the suspended and thermally isolated pi

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3

Ndube, Ncediwe. "Determination of fumonisins in maize by High Performance Liquid Chromatography with fluorescence and ultraviolet detection of o-phthaldialdehyde, naphthalene-2,3-dicarboxaldehyde and dansyl chloride derivatives." Thesis, University of the Western Cape, 2011. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_2588_1320667169.

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Fumonisins, carcinogenic mycotoxins produced by various Fusarium species, occur naturally in maize and maize-based food products. They are hazards for animal and human health as they cause cancer in rodents and have been associated with oesophageal cancer and neural tube defects in humans. The most abundant naturally occurring fumonisins analogues in maize are fumonisin B1, B2 and B3 (FB1, FB2 and FB3). For analytical determination, they mostly require suitable extraction, clean-up and pre or post-column derivatization together with reversed-phase HPLC separation. o- Phthaldialdehyde (OPA) had

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4

Cook, Daniel W. "Chemometric Curve Resolution for Quantitative Liquid Chromatographic Analysis." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4362.

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In chemical analyses, it is crucial to distinguish between chemical species. This is often accomplished via chromatographic separations. These separations are often pushed to their limits in terms of the number of analytes that can be sufficiently resolved from one another, particularly when a quantitative analysis of these compounds is needed. Very often, complicated methods or new technology is required to provide adequate separation of samples arising from a variety of fields such as metabolomics, environmental science, food analysis, etc. An often overlooked means for improving analysis is

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5

Pérez, Quiñones Carme. "Determinació d'anions d'interès en adoberia mitjançant cromatografia iònica." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/458243.

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The laboratories of the leather sector have the necessity to analyse anionic species in different samples. Although ionic chromatography is currently the best method for this analysis, until now, the processes based on it were non-existent. The purpose of this thesis is the development of innovative chromatographic methods, with an ion-exchange stationary phase and a PDA detector, to determine anions of interest in the leather industry. This study contains two blocks. The first one focuses on the determination of the anions that contribute to salinity and the second block corresponds to the qu

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6

Peprná, Tereza. "Anthokyanová barviva ve vybraném ovoci." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216775.

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This diploma thesis is concerned with determination anthocyanins dyes in elderberry (Sambucus nigra L.). In theoretical part there is described general characterization of the plant, its chemical composition, short view of elderberry breeding and possibilities of usage in food and medical industry. Bigger attention is paid to anthocyanins dyes. There is described their characterization, occurrence, factors that have an impact on their stability. Biosynhesis of the pigments and metabolism, benefit effects and their usage in food chemistry are then shortly sumarized. Methods of determination of

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7

Slovick, Brian Alan. "Infrared phased-array antenna-coupled tunnel diodes." Doctoral diss., University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5049.

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Infrared (IR) dipole antenna-coupled metal-oxide-metal (MOM) tunnel diodes provide a unique detection mechanism that allows for determination of the polarization and wavelength of an optical field. By integrating the MOM diode into a phased-array antenna, the angle of arrival and degree of coherence of received IR radiation can be determined. The angular response characteristics of IR dipole antennas are determined by boundary conditions imposed by the surrounding dielectric or conductive environment on the radiated fields. To explore the influence of the substrate configuration, single dipole

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8

Kim, Byungchul. "Analysis of Melamine and Cyanuric Acid by Liquid Chromatography with Diode Array Detection and Tandem Mass Spectrometry." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/KimB2009.pdf.

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9

Bailey, Hope P. "CHEMOMETRIC ANALYSIS OF COMPREHENSIVE TWO-DIMENSIONAL LIQUID CHROMATOGRAPHIC-DIODE ARRAY DETECTION DATA: PEAK RESOLUTION, QUANTIFICATION AND RAPID SCREENING." VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/2924.

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This research project sought to explore, compare and develop chemometric methods with the goal of resolving chromatographically overlapped peaks though the use of spectral information gained from the four-way data sets associated with comprehensive two-dimensional liquid chromatography with diode array detection (LC ´ LC-DAD). A chemometric method combining iterative key set factor analysis (IKSFA) and multivariate curve resolution-alternating least squares (MCR-ALS) was developed. In the section of urine data analyzed, over 50 peaks were found, with 18 visually observable and 32 additional

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10

Moore, Andrew C. "Operating, testing and evaluating hybridized silicon P-I-N arrays /." Link to online version, 2005. https://ritdml.rit.edu/dspace/handle/1850/1174.

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11

Abdel, Rahman Mohamed. "ANTENNA-COUPLED TUNNEL DIODES FOR DUAL-BAND MILLIMETER-WAVE/INFRARED F." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2597.

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The infrared and millimeter-wave portions of the spectrum both have their advantages for development of imaging systems. Because of the difference in wavelengths, infrared imagers offer inherently high resolution, while millimeter-wave systems have better penetration through atmospheric aerosols such as fog and smoke. Shared-aperture imaging systems employing a common focal-plane array that responds to both wavebands are desirable from the viewpoint of overall size and weight. We have developed antenna-coupled sensors that respond simultaneously at 30 THz and at 94 GHz, utilizing electron-beam

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12

Couch, Richard A. "A new method to study transport across membranes and interfaces using spacially resolved spectroscopy with laser excitation and diode array detection /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487266011221019.

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13

Serrano, Ana Filipa Albano. "Cochineal, a precious source of red: cochineal dyes characterization by high performance liquid chromatography with diode array detection and principal component analysis." Master's thesis, Faculdade de Ciências e Tecnologia, 2010. http://hdl.handle.net/10362/5786.

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Presented at Faculdade de Ciências e Tecnologias, Universidade de Lisboa, to obtain the Master Degree in Conservation and Restoration of Textiles<br>The identification of precise cochineal species used to dye historical textiles can provide important information about the provenance and date of these objects. The most widely used method to identify cochineal species in textiles involves quantification of specific minor compounds, after High-performance Liquid Chromatography with Diode Array Detection (HPLC/DAD) analysis. However, there are several factors which are not presently taken in accou

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14

Allen, Robert. "Investigations into Background Correction and Retention Time Alignment to Enhance Quantitative Chemometric Analysis of Comprehensive Two-Dimensional Liquid Chromatography-Diode Array Detection Data." VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/2912.

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The focus of the projects presented here was to develop possible solutions to three issues commonly encountered during chemometric analysis of comprehensive two-dimensional liquid chromatography diode array detector (LCxLC-DAD) data. The focus of the first project was to determine a means of performing background correction that removed two background ridges. The methods of simply subtracting out a mean blank sample, singular value decomposition based background correction (SVD-BC) and asymmetrically weighted least squares (AWLS) were compared. AWLS was found to be the only background corre

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15

Knittel, Diana N. [Verfasser]. "Characterization of secondary metabolites in Drimia maritima (L.) Stearn and Strophanthus kombé Oliv. as well as fermented extracts derived therefrom by liquid chromatography-diode array/mass spectrometric detection / Diana N. Knittel." Aachen : Shaker, 2016. http://d-nb.info/1138177687/34.

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16

Lindholm, Johan. "Development and Validation of HPLC Methods for Analytical and Preparative Purposes." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, Univ.-bibl. [distributör], 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4442.

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17

Corbeil, Therrien Audrey. "Conception et modélisation de détecteurs de radiation basés sur des matrices de photodiodes à avalanche monophotoniques pour la tomographie d'émission par positrons." Thèse, Université de Sherbrooke, 2018. http://hdl.handle.net/11143/11909.

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La tomographie d'émission par positrons (TEP) se distingue des autres modalités d'imagerie par sa capacité à localiser et quantifier la présence de molécules marquées, appelées radiotraceurs, au sein d'un organisme. Cette capacité à mesurer l'activité biologique des différents tissus d'un sujet apporte des informations uniques et essentielles à l'étude de tumeurs cancéreuses, au fonctionnement du cerveau et de ses maladies neurodégénératives et de la pharmacodynamique de nouveaux médicaments. Depuis les tout débuts de la TEP, les scientifiques rêvent de pouvoir utiliser l'information de te

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18

Broecker, Sebastian. "Aufbau und Anwendung einer Methode zur Identifizierung und Quantifizierung von Giften und deren Metaboliten in Blut und Haaren in der Systematischen Toxikologischen Analyse mittels Flüssigchromatographie-Quadrupol-Flugzeitmassenspektrometrie-Kopplung (LC-QTOF-MS)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2012. http://dx.doi.org/10.18452/16461.

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Die Systematische Toxikologische Analyse (STA) stellt auf Grund der großen Vielfalt und der ständigen Zunahme an toxikologisch relevanten Substanzen eine der größten Herausforderungen in der chemischen Analyse dar. In der vorliegenden Arbeit wurde daher die Eignung der Flüssigchromatographie in Kombination mit der Hybrid-Quadrupol-Flugzeitmassenspektrometrie (LC-QTOF-MS) für diesen Zweck untersucht. Dazu wurden eine Datenbank mit über 7360 und eine CID-Spektrenbibliothek mit mehr als 2720 toxikologisch relevanten Substanzen erstellt und geeignete Probenvorbereitungsmethoden entwickelt. Die Erp

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19

Houng, Chi-Lin, and 洪啟倫. "A Silicon-Base Photo-detector Diode Array." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/19699967861858712908.

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碩士<br>國立交通大學<br>電子研究所<br>84<br>This thesis deals with the design and implementation of a silicon-based photo-detector diode array with capacitive readout, surrounding contact and mesh electrode. The mesh electrode is used to prevent the reflection of incidentlight in long wavelength. In addition, the surrounding contact is used to reduce surface recombination. The detectors are tested by electrical measurement and illumination of different light sources. From the resultsof the electrical pr

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20

TSAI, CHENG-RU, and 蔡承儒. "Ultra Performance Liquid Chromatography Diode-array Detector and Laser-Induced Breakdown Spectrometry for the Determination of Resveratrol." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/adu66k.

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21

Lai, Yu-Wei, and 賴昱維. "Simultaneous Determination of 23 Artificial Dyes in Dried Fish, Fish Roe and Dried Shrimp by High Performance Liquid Chromatography Coupled to Diode Array Detector and Quadrupole Orbitrap Mass Spectrometry." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7svdqc.

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碩士<br>國立臺灣海洋大學<br>食品科學系<br>106<br>The simultaneous determination of 23 artificial dyes in dried fish, fish roe and dried shrimp by using high performance liquid chromatography coupled to diode array detector and quadrupole orbitrap mass spectrometry (HPLC-DAD-Q-Orbitrap) was developed in this study. The samples were homogenized and extracted by water, methanol and tetrahydrofuran. Transesterification with sodium methoxide to change triglycerides converted to fatty acid methyl esters. Organic phase was SPE by Silica gel SepPak plus silica column to extracted oil-soluble dyes. Water phase was SP

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22

Afonso, Ana Margarida da Silva. "Resveratrol production strategies: their influence on cell physiology and plasmid stability." Master's thesis, 2013. http://hdl.handle.net/10400.6/3211.

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Resveratrol (3, 5, 4’–trans-hydroxystilbene) has been used since immemorial times in traditional medicine as an antimicrobial and antioxidant compound. Recent discoveries demonstrated other health benefits for this phytoalexin, such as anticancer and anti-ageing activities, making it desirable for the pharmaceutical, nutraceutical and cosmetic industries. This polyphenolic is a plant secondary metabolite mainly produced by peanuts and grapevines. Although plant cells were traditionally used as a biological alternative for resveratrol production, in recent years, recombinant microorganisms, suc

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23

Maynard, Evan David. "Evaluation of a Helical Diode Array and Planned Dose Perturbation Model for Pretreatment Verification of Volumetric Modulated Arc Therapy." Thesis, 2013. http://hdl.handle.net/1828/4932.

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The ArcCHECK dosimeter is a novel dosimetry tool that uses a helical array of silicon diode detectors to measure dose in a cylindrical plane. 3DVH is an associated software that can use ArcCHECK diode measurements along with treatment planning system (TPS) data to guide a full 3D dose reconstruction. The ArcCHECK phantom, along with 3DVH software was evaluated as a volumetric modulated arc therapy (VMAT) pretreatment verification tool. The comprehensive evaluation of the ArcCHECK and 3DVH system involved a comparison of measured dose to both ECLIPSE and Monte Carlo calculated dose for open

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24

Collins, Julie Lynn. "Analysis of lichen phenolics as environmental stress indicators by liquid chromatography coupled to mass spectrometric and UV-VIS diode array detectors /." 2004.

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25

Chu, Ying-Yu, and 朱映諭. "The simultaneous determination of di(2-ethylhexyl) phthalate and mono(2-ethylhexyl) phthalate in human serum by high performance liquid chromatography – diode array detection." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/23999281384476618279.

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碩士<br>高雄醫學大學<br>藥學研究所<br>98<br>Phthalates are present in most plastic products. Di(2-ethylhexyl) phthalate (DEHP) is widely used as mainly a plasticizer in polyvinyl chloride (PVC) products. It can release from medical devices, food storage products, containers, toys, etc. DEHP as an endocrine disruptor hormone and its metabolite of mono(2-ethylhexyl) phthalate (MEHP) has been significantly associated with the decreased penis width, and the incomplete descent of testes. The method was based on the simultaneous determination of DEHP and its metabolite MEHP in human serum by high performance li

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26

Černá, Martina. "Stanovení adenosintrifosfátu a adenosindifosfátu v reálných vzorcích." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-324188.

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The aim of the diploma thesis was to find optimal conditions of high pressure liquid chromatography for the detection and quantification of two common nucleotides, namely adenosine diphosphate and adenosine triphosphate, as well as to perform an analysis of these in real life samples of citrus fruits and plant extracts. Further aim of the project was to determine the limits of detection and quantification of adenosine diphosphate and adenosine triphosphate under the optimized conditions and using these to compare the sensitivity of given detectors. To achieve this HPLC-UV, capillary HPLC-DAD a

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