Дисертації з теми "Ultraviolet and visible spectroscopy"
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Fish, Deborah Jane. "Measurement of stratospheric composition using ultraviolet and visible spectroscopy." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360887.
Повний текст джерелаAdamopoulos, Georges. "Visible and ultraviolet Raman spectroscopy of diamond-like carbon." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621148.
Повний текст джерелаO'Shay, Joseph Fred. "Time-resolved visible and extreme ultraviolet spectroscopy of laser-produced tin plasma." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3264604.
Повний текст джерелаTitle from first page of PDF file (viewed August 7, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 248-255).
George, Ronie. "Early Ovarian Cancer Detection Using Fluorescence Spectroscopy in the Ultraviolet-C through Visible." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/301694.
Повний текст джерелаRAMSEY-BELL, DEBBY COLLEEN. "PHOTOACOUSTIC MEASUREMENTS OF ATMOSPHERIC AEROSOL ABSORPTION COEFFICIENTS AT ULTRAVIOLET, VISIBLE, AND INFRARED WAVELENGTHS." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184139.
Повний текст джерелаGratien, Aline Orphal Johannes Picquet-Varrault Bénédicte. "Spectroscopie ultraviolet-visible et infrarouge de molécules clés atmosphériques." S. l. : Paris Est, 2008. http://doxa.scd.univ-paris12.fr:80/theses/th0494573.pdf.
Повний текст джерелаGratien, Aline. "Spectroscopie ultraviolet-visible et infrarouge de molécules clés atmosphériques." Phd thesis, Université Paris-Est, 2008. http://tel.archives-ouvertes.fr/tel-00846616.
Повний текст джерелаBloch, Jonathan C. (Jonathan Craig). "Extending frequency modulation spectroscopy : sensitive and selective high resolution laser absorption in the visible and ultraviolet." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10861.
Повний текст джерелаWang, Xuzhu. "Beam-folding ultraviolet-visible Fourier transform spectrometry and underwater cytometry for in situ measurement of marine phytoplankton." HKBU Institutional Repository, 2007. http://repository.hkbu.edu.hk/etd_ra/814.
Повний текст джерелаVan, der Horst Charlton. "Development of a bismuth-silver nanofilm sensor for the determination of platinum group metals in environmental samples." University of the Western Cape, 2015. http://hdl.handle.net/11394/4451.
Повний текст джерелаNowadays, the pollution of surface waters with chemical contaminants is one of the most crucial environmental problems. These chemical contaminants enter rivers and streams resulting in tremendous amount of destruction, so the detection and monitoring of these chemical contaminants results in an ever-increasing demand. This thesis describes the search for a suitable method for the determination of platinum group metals (PGMs) in environmental samples due to the toxicity of mercury films and the limitations with methods other than electroanalytical methods. This study focuses on the development of a novel bismuth-silver bimetallic nanosensor for the determination of PGMs in roadside dust and soil samples. Firstly, individual silver, bismuth and novel bismuth-silver bimetallic nanoparticles were chemically synthesised. The synthesised nanoparticles was compared and characterised by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), ultraviolet-visible spectroscopy (UV-Vis), Fourier-transformed infrared spectroscopy (FT-IR), Raman spectroscopy, and transmission electron microscopy (TEM) analysis to interrogate the electrochemical, optical, structural, and morphological properties of the nanomaterials. The individual silver, bismuth, and bismuth-silver bimetallic nanoparticles in the high resolution transmission electron microscopy results exhibited an average particle size of 10-30 nm. The electrochemical results obtained have shown that the bismuth-silver bimetallic nanoparticles exhibit good electro-catalytic activity that can be harnessed for sensor construction and related applications. The ultraviolet-visible spectroscopy, Fourier-transformed infrared spectroscopy, and Raman spectroscopy results confirmed the structural properties of the novel bismuth-silver bimetallic nanoparticles. In addition the transmission electron microscopy and selected area electron diffraction morphological characterisation confirmed the nanoscale nature of the bismuth-silver bimetallic nanoparticles. Secondly, a sensitive adsorptive stripping voltammetric procedure for palladium, platinum and rhodium determination was developed in the presence of dimethylglyoxime (DMG) as the chelating agent at a glassy carbon electrode coated with a bismuth-silver bimetallic nanofilm. The nanosensor further allowed the adsorptive stripping voltammetric detection of PGMs without oxygen removal in solution. In this study the factors that influence the stripping performance such as composition of supporting electrolyte, DMG concentration, deposition potential and time studies, and pH have been investigated and optimised. The bismuth-silver bimetallic nanosensor was used as the working electrode with 0.2 M acetate buffer (pH = 4.7) solution as the supporting electrolyte. The differential pulse adsorptive stripping peak current signal was linear from 0.2 to 1.0 ng/L range (60 s deposition), with limit of detections for Pd (0.19 ng/L), Pt (0.20 ng/L), Rh (0.22 ng/L), respectively. Good precision for the sensor application was also obtained with a reproducibility of 4.61% for Pd(II), 5.16% for Pt(II) and 5.27% for Rh(III), for three measurements. Investigations of the possible interferences from co-existing ions with PGMs were also done in this study. The results obtained for the study of interferences have shown that Ni(II) and Co(II) interfere with Pd(II), Pt(II) and Rh(III) at high concentrations. The interference studies of Cd(II), Pb(II), Cu(II) and Fe(III) showed that these metal ions only interfere with Pd(II) and Pt(II) at high concentrations, with no interferences observed for Rh(III). Phosphate and sulphate only interfere at high concentrations with Pt(II) and Rh(III) in the presence of DMG with 0.2 M acetate buffer (pH = 4.7) solution as the supporting electrolyte. Based on the experimental results, this bismuth-silver bimetallic nanosensor can be considered as an alternative to common mercury electrodes, carbon paste and bismuth film electrodes for electrochemical detection of PGMs in environmental samples. Thirdly, this study dealt with the development of a bismuth-silver bimetallic nanosensor for differential pulse adsorptive stripping voltammetry (DPAdSV) of PGMs in environmental samples. The nanosensor was fabricated by drop coating a thin bismuth-silver bimetallic film onto the active area of the SPCEs. Optimisation parameters such as pH, DMG concentration, deposition potential and deposition time, stability test and interferences were also studied. In 0.2 M acetate buffer (pH = 4.7) solution and DMG as the chelating agent, the reduction signal for PGMs ranged from 0.2 to 1.0 ng/L. The detection limit for Pd(II), Pt(II) and Rh(III) was found to be 0.07 ng/L, 0.06 ng/L and 0.2 ng/L, respectively. Good precision for the sensor application was also obtained with a reproducibility of 7.58% for Pd(II), 6.31% for Pt(II) and 5.37% for Rh(III), for three measurements. In the study of possible interferences, the results have shown that Ni(II), Co(II), Fe(III), Na+, SO42- and PO43- does not interfere with Pd(II) in the presence of DMG with sodium acetate buffer as the supporting electrolyte solution. These possible interference ions only interfere with Pt(II) and Rh(III) in the presence of DMG with 0.2 M acetate buffer (pH = 4.7) as the supporting electrolyte solution.
Rives, Patrick. "Étude spectroscopique et cinétique des mélanges Xe-HCl dans le proche ultraviolet et le visible." Toulouse 3, 1993. http://www.theses.fr/1993TOU30109.
Повний текст джерелаChailleux, Yohann. "Observation satellitaire de la pollution à l’ozone par synergie multispectrale à trois bandes Ultraviolet+Visible+Infrarouge." Thesis, Paris Est, 2018. http://www.theses.fr/2018PESC1033/document.
Повний текст джерелаAir quality is a major environmental issue for our society. This PhD thesis focuses on space borne observation of the major gaseous pollutant. Tropospheric ozone. New generation satellite instruments allow measuring it daily at regional to global scales. However, single spectral domain measurements do not provide enough information for quantifying ozone concentrations at the atmospheric boundary layer, where the air we breathe is located. Synergism of measurements from multiple spectral domains offers a great potential for better characterizing ozone pollution. The first 2-band multispectral approach combining infrared (IR) measurements of IASI and the ultraviolet (UV) of GOME-2 was developed at LISA laboratory, where I conducted my thesis. The goal of my thesis is to go a step further in the quantification of ozone pollution by including the visible (VIS) Chappuis band, in order to develop an unprecedented 3-band multispectral synergism UV+VIS+IR. First, I developed a approach for extracting ozone information from GOME-2 VIS spectra, by selecting the wavelengths mostly affected by ozone absorption and rejecting those with absorptions from other gases, as well as determining the joint adjustment variables of the approach (vertical ozone profile, surface albedo, spectral shifts, etc) and the databases needed to simulate the spectra VIS (surface albedo, spectroscopy).Then, I implemented the multispectral method with three bands UV+VIS+IR, first on simulated low-orbit and geostationary observations from respectively IASI and GOME-2 and MAGEAQ to estimate the improvement in terms of sensitivity and precision, as compared to existing methods. Last, I applied the 3-band multispectral approach to real satellite observations of IASI and GOME-2. Comparisons with other data shows enhanced performances of the new UV+VIS+IR observations to characterize ozone pollution events, with respect to the 2-band approach
Selig-Parthey, Ulrike [Verfasser], and Tobias [Akademischer Betreuer] Brixner. "Methods of Nonlinear Femtosecond Spectroscopy in the Visible and Ultraviolet Regime and their Application to Coupled Multichromophore Systems / Ulrike Selig-Parthey. Betreuer: Tobias Brixner." Würzburg : Universitätsbibliothek der Universität Würzburg, 2012. http://d-nb.info/1029661766/34.
Повний текст джерелаHebrard, Guillaume. "L'ABONDANCE DU DEUTÉRIUM, DE L'ULTRAVIOLET AU VISIBLE." Phd thesis, Université Paris-Diderot - Paris VII, 2000. http://tel.archives-ouvertes.fr/tel-00002333.
Повний текст джерелаLai, Sin Pin. "Furan measurement in transformer oil by UV-Vis spectroscopy using fuzzy logic approach." Thesis, Curtin University, 2009. http://hdl.handle.net/20.500.11937/2342.
Повний текст джерелаLefez, Benoît. "Caractérisation d'oxydes de cuivre par photoluminescence." Rouen, 1991. http://www.theses.fr/1991ROUES047.
Повний текст джерелаVenumuddala, Hareesha Reddy. "Study of Drug Delivery Behavior Through Biomembranes Using Thermal And Bioanalytical Techniques." Cleveland State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=csu1295472144.
Повний текст джерелаLai, Sin Pin. "Furan measurement in transformer oil by UV-Vis spectroscopy using fuzzy logic approach." Curtin University of Technology, Department of Electrical and Computer Engineering, 2009. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=128452.
Повний текст джерелаKherde, Yogesh A. "Green Synthesis and Evaluation of Catalytic Activity of Sugar Capped Gold Nanoparticles." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1388.
Повний текст джерелаÅhlund, John. "Electronic and Geometrical Structure of Phthalocyanines on Surfaces : An Electron Spectroscopy and Scanning Tunneling Microscopy Study." Doctoral thesis, Uppsala universitet, Fysiska institutionen, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7802.
Повний текст джерелаHöger, Geralin. "Self-Organization of β-Peptide Nucleic Acid Helices for Membrane Scaffolding". Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://hdl.handle.net/21.11130/00-1735-0000-0003-C187-A.
Повний текст джерелаMazet, Jean-François. "Couleur et qualité des placages de chêne et étude de leur comportement photochimique." Nancy 1, 1988. http://www.theses.fr/1988NAN10393.
Повний текст джерелаShreepathi, Subrahmanya, Hung Van Hoang, and Rudolf Holze. "Corrosion Protection Performance and Spectroscopic Investigations of Soluble Conducting Polyaniline-Dodecylbenzenesulfonate Synthesized via Inverse Emulsion Procedure." Universitätsbibliothek Chemnitz, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200900775.
Повний текст джерелаBeucher, Eric. "Etude de l'oxydabilité de cuivre désoxygéné au phosphore et de laitons monophasés alpha par spectroscopies optiques et par spectrométrie de masse des ions secondaires." Rouen, 1992. http://www.theses.fr/1992ROUE5003.
Повний текст джерелаBertaut, Éléonore. "Développement de nouvelles méthodologies pour la calorimétrie de titration isotherme : Applications aux domaines de l'environnement et de la santé." Thesis, Littoral, 2016. http://www.theses.fr/2016DUNK0424/document.
Повний текст джерелаThis work was dedicated to the development of new isothermal titration calorimetry (ITC) methodologies for the characterization of intramolecula affinities, after validation of model system via capillary electrophoresis, UV-visible and NMR spectroscopy. We have demonstrated that the coupling of unconventional experiments with the conventional protocols generally improves the calorimetric characterization, with a dramatic decrease of the uncertainties on thermodynamic parameters. The potential of global analysis applied to differentiated experiments was evaluated on a theoretical level, allowing the definition of optimal experiments, depending on the type of studied complex. These strategies also enabled, on a experimental point of view, the study of complexations which cannot be analyzed by conventional approaches, in the case of complexes involving cyclodextrins or albumin. Indeed, our strategies overcomes the difficulties associated with athermic complexes, with complexes of low affinity, with multiple equilibria and with the low solubility of interacting partners. Finally, the evaluation of a new thermo-kinetic treatment of ITC thermograms has been achieved, further increasing the potential of this technique in the characterization of molecular interactions
Roberge, Aki. "Ultraviolet spectroscopy of circumstellar disks." Available to US Hopkins community, 2002. http://wwwlib.umi.com/dissertations/dlnow/3068203.
Повний текст джерелаGong, Yun. "Structure-property relationships of dyes as applied to dye-sensitized solar cells." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275007.
Повний текст джерелаGianola, Adam J. "Ultraviolet photoelectron spectroscopy of organic anions." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3219005.
Повний текст джерелаZhang, Feifei. "Fabrication of Aluminium Nanostructure for Visible to Ultraviolet Plasmonics." Thesis, Troyes, 2018. http://www.theses.fr/2018TROY0011.
Повний текст джерелаAluminum (Al) is now widely regarded as one of the most promising metals for pushing the spectral limits of plasmonics towards the ultraviolet range. Additionally, Al is cheap, abundant, non-toxic, and compatible with the complementary metal-oxide-semiconductor technology. In this thesis, we investigate numerically and experimentally the influence of various key parameters on the optical properties of Al nanostructures. Firstly, we study the natural stability of Al nanoparticles, which show about 90-days stability when totally exposed to the ambient air. Secondly, we study the influence of rapid thermal annealing on the plasmonic properties of Al nanostructures. Due to the reduction of the number of grain boundaries inside the metal, an improvement of the plasmonic resonances quality factor is found with annealing at optimal conditions. Thirdly, we unveil the crucial effect of the surface roughness of Al lithographed nanostructures. The surface roughness is found to cause the disappearance of the substrate-induced quadrupolar mode and the weakening of the plasmonic dipolar mode. Finally, we investigate the effect of three kinds of uniform disorder (displacement disorder, size disorder, and rotation disorder) on the plasmonic resonances of Al nanoparticle arrays. The possibility to tune their plasmonic properties in the visible and near ultraviolet range by controlling the disorder is studied
Kalusniak, Sascha. "Ultraviolet and visible semiconductor lasers based on ZnO heterostructures." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://dx.doi.org/10.18452/16898.
Повний текст джерелаIn the framework of this thesis, the optical properties of ZnO-based heterostructures fabricated by molecular beam epitaxy have been investigated, particularly with regard to their suitability for semiconductor laser devices operating in the ultraviolet and visible spectral range. It turned out that ZnO and its ternary alloys ZnMgO and ZnCdO are extremely versatile. They allow to tune the laser emission in a wide spectral range as well as to realize various laser geometries. In detail, it was shown that the laser emission of ZnCdO/ZnO multiple quantum wells can cover a spectral range from violet to green wavelengths. Although these structures suffer from large built-in electric fields, room temperature laser action under optical pumping was demonstrated up to a wavelength of 510. The optical feedback for lasing is provided by growth imperfections on a macroscopic length scale turning these structures into random lasers. The fabrication of micro-resonators allowed to study the interplay between random and Fabry-Perot feedback. The experimental and theoretical analysis shows that random feedback generally requires a larger gain than under Fabry-Perot feedback. Further, this work demonstrates that ZnO- and ZnMgO-layers can be used to fabricate highly reflective distributed Bragg reflectors for applications in the ultraviolet and blue/green spectral range. The partly unknown dispersion curves of the index of refraction of the employed ternary alloys have been elaborated. This enabled the realization of all monolithic microcavities with ZnO/ZnMgO quantum wells as active zone. For temperatures below 150 K strong exciton-photon coupling is observed in such microcavities. At room temperature, vertical cavity surface emitting laser action in the near UV spectral range is demonstrated for appropriately designed microcavities.
West, Gavin N. (Gavin Neal). "Visible and ultraviolet integrated photonics for addressing atomic systems." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122915.
Повний текст джерелаThesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 117-129).
In the wake of many technological successes in integrated photonics based on silicon, attention has been given to applications in the visible light regime. This thesis is concerned with furthering the development of integrated photonics for controlling atomic systems, in particular individual trapped atomic ions. Nature places strict constraints on the frequency of the lasers used to address these atoms, typically spanning from the ultraviolet into the near infrared, and on the sensitivity to accidental perturbations from the control hardware. A platform for broadband integrated photonics, using amorphous aluminum oxide as the patterned material, is developed and exhibits suitable performance in the visible and ultraviolet. The waveguide loss and resonator quality factors are the best which have been reported to date, for wavelengths shorter than 500 nm. Next, a theory is developed which proposes laser frequency noise as a limiting factor for the extinction ratio of common integrated modulator designs. Understanding of this limit, and possible methods to suppress its effects, is important due to the fragile nature of single-photon-sensitive quantum systems. Finally, the application of technology developed here is applied to the analysis of trapped-ion-based optical atomic clocks. Justification for such integration of clocks and the impacts that result -- both good and bad -- are discussed from the perspective of a hardware designer.
by Gavin N. West.
S.M.
S.M. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
Miller, Bradley E. "Vacuum ultraviolet laser spectroscopy of small molecules." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/27891.
Повний текст джерелаMorton, Lynne G. "Visible and ultraviolet vertical external cavity surface emitting semiconductor lasers." Thesis, University of Strathclyde, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487870.
Повний текст джерелаZhang, Yun. "Fabrication and characterization of GaN visible-blind ultraviolet avalanche photodiodes." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29604.
Повний текст джерелаCommittee Chair: Shen, Shyh-Chiang; Committee Member: Doolittle, William A.; Committee Member: Dupuis, Russell Dean. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Scully, Shane William James. "Negative photoion spectroscopy in the extreme ultraviolet." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484323.
Повний текст джерелаDel, Zanna Giulio. "Extreme ultraviolet spectroscopy of the solar corona." Thesis, University of Central Lancashire, 1999. http://clok.uclan.ac.uk/7916/.
Повний текст джерелаMillar, Sean Charles. "Ultraviolet photoelectron spectroscopy of metals and alloys." Thesis, University of Liverpool, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328146.
Повний текст джерелаCoulomb, Bruno. "Spectrophotométrie U. V. -visible avancée pour l'analyse en continu d'éléments métalliques dans les eaux." Aix-Marseille 1, 2000. http://www.theses.fr/2000AIX11030.
Повний текст джерелаShen, Tiehan. "Optical properties of layered materials in the visible and vacuum ultraviolet." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330253.
Повний текст джерелаLawrence, Karl Perry. "Photoprotection from ultraviolet and visible radiation induced damage to the skin." Thesis, King's College London (University of London), 2017. https://kclpure.kcl.ac.uk/portal/en/theses/photoprotection-from-ultraviolet-and-visible-radiation-induced-damage-to-the-skin(b2735cfd-f448-4fe6-837a-21ad5eb12311).html.
Повний текст джерелаCarlson, David R. "Frequency Combs for Spectroscopy in the Vacuum Ultraviolet." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/612874.
Повний текст джерелаRichmond, A. M. "Vacuum ultraviolet discharge excited lasers." Thesis, University of Oxford, 1987. http://ora.ox.ac.uk/objects/uuid:3a09736b-bffb-4ac9-b57c-fb9daa1c8484.
Повний текст джерелаPosavec, Tony. "An Investigation into the Fluorescence of Polymers." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1499353221343727.
Повний текст джерелаHUTH, THOMAS CARL. "ANALYTICAL MASS SPECTROMETRY WITH A SELECTIVE VACUUM ULTRAVIOLET PHOTOIONIZATION SOURCE." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183916.
Повний текст джерелаAguilar, Lara Karla. "Effect of ultraviolet/visible radiation processing on the quality of fruit juices." Doctoral thesis, Universitat de Lleida, 2017. http://hdl.handle.net/10803/405804.
Повний текст джерелаEste trabajo estudió la irradiación ultravioleta-visible (UV-Vis) como una alternativa para la pasteurización de zumos. Los resultados demostraron que la irradiación ultravioleta no produce hidroximetilfurfural y es capaz de degradarlo. Se propuso un mecanismo de foto-degradación y se usaron diferentes modelos cinéticos para describir la reacción. Por el contrario, la foto-degradación de la vitamina C fue insignificante usando una lámpara de emisión múltiple. Además, el procesamiento UV-Vis fue efectivo inactivando las enzimas polifenoloxidasa y peroxidasa en zumos; a mayor temperatura, mayor inactivación. Mientras tanto, la mayoría de los parámetros fisicoquímicos fueron prácticamente inalterados y la cantidad inicial de pigmentos fue reducida. Por lo tanto, el procesamiento UV-Vis combinado con un calentamiento suave representa una alternativa viable para la pasteurización de zumos.
This work studied the ultraviolet-visible (UV-Vis) irradiation as an alternative for fruit juice pasteurisation. The results showed that ultraviolet irradiation does not produce hydroxymethylfurfural and is capable of degrade it. A mechanism of photo-degradation was proposed and different kinetic models were used to describe the reaction. On the contrary, the photo-degradation of vitamin C was insignificant using a multi-wavelength emitting lamp. Moreover, the UV-Vis processing was effective inactivating the enzymes polyphenoloxidase and peroxidase in fruit juices. The higher the temperature the higher the inactivation. Meanwhile, most physicochemical parameters were practically unaltered and the initial quantity of pigments was reduced. Therefore, the UV-Vis processing combined with a mild-heating represents a viable alternative for fruit juice pasteurisation.
Cates, Ezra Lucas Hoyt. "Development of visible-to-ultraviolet upconversion phosphors for light-activated antimicrobial surfaces." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47619.
Повний текст джерелаEichert, James J., James F. Carbary, Priscilla L. McKerracher, and Lora L. Suther. "Ultraviolet and Visible Imaging and Spectrographic Imaging (UVISI) Data Processing Center (DPC)." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/608394.
Повний текст джерелаThe nine sensors and one image processor of the Ultraviolet and Visible Imaging and Spectrographic Imaging (UVISI) instrument aboard the Midcourse Space Experiment (MSX) satellite can potentially generate up to three gigabytes of data of data per day. The UVISI Data Processing Center (DPC) must execute a multitude of complex processing functions in a 24-hour operational window, verify the UVISI data and also provide a compact, quantified record of the verification. The Center additionally must support higher-level data analysis functions. Data processing functions are divided into pipeline processing and data conversion processing. Pipeline processing, which consists of the main pipeline process, Pipeline, and several auxiliary processes is responsible for generating Data Quality Indices (DQI) that summarize sensor performance and Data Measurement Indices (DMI) that summarize sensor measurements. Both sets of indices provide scientists and engineers with a compact, easily-reviewed record of instrument performance. The conversion process, Convert, supports data analysis by converting raw telemetry into scientific/engineering units. On a pixel-by-pixel basis, Convert provides functions for dark-correction, flat-fielding, gain and gate adjustment, non-linearity correction, and count-to-photon conversion. Operating in conjunction with Convert, a pointing utility, Point, is used to determine the locations of selected objects in inertial space. The accomplishment of these myriad tasks relies on a state-of-the-art computer network using multiple workstations. Normal DPC operations are fully automated but remain flexible enough to allow prompt intervention by the UVISI Performance Assessment Team (PAT).
Zhang, Zhipeng, Wenckstern Holger von, Jörg Lenzner, Michael Lorenz, and Marius Grundmann. "Visible-blind and solar-blind ultraviolet photodiodes based on (InxGa1-x)2O3." American Institute of Physics, 2016. https://ul.qucosa.de/id/qucosa%3A23547.
Повний текст джерелаHenderson, Angus. "Studies of optical parametric oscillators for the ultraviolet and visible spectral regions." Thesis, University of St Andrews, 1993. http://hdl.handle.net/10023/14951.
Повний текст джерелаGlass, Fenton John, and f. glass@fz-juelich de. "Tomographic Visible Spectroscopy of Plasma Emissivity and Ion Temperatures." The Australian National University. Research School of Physical Sciences and Engineering, 2004. http://thesis.anu.edu.au./public/adt-ANU20051028.002110.
Повний текст джерела