Дисертації з теми "UV"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "UV".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Roig, Benoît. "Couplage UV/UV : applications analytiques environnementales." Aix-Marseille 1, 1999. http://www.theses.fr/1999AIX11052.
Повний текст джерелаMcGonigle, A. J. S. "Tunable UV lasers." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343230.
Повний текст джерелаRizzini, Luca [Verfasser], and Roman [Akademischer Betreuer] Ulm. "UVR8: a plant UV-B photoreceptor = UVR8: ein pflanzlicher UV-B Photorezeptor." Freiburg : Universität, 2011. http://d-nb.info/1123457891/34.
Повний текст джерелаHeadland, Lauren R. "UV-resistance locus 8 and UV-B specific signaling in Arabidopsis thaliana." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/1757/.
Повний текст джерелаPeng, Sheng. "Ultraviolet sources for advanced applications in the vacuum UV and near UV." W&M ScholarWorks, 2004. https://scholarworks.wm.edu/etd/1539623467.
Повний текст джерелаMead, C. J. "Some UV curable systems." Thesis, University of Kent, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252581.
Повний текст джерелаPatil, Raj. "Deep UV Raman Spectroscopy." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/613378.
Повний текст джерелаChittavanich, Pongsith P. "Pigmented UV-Curable Alkyd." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1259614294.
Повний текст джерелаXu, Tong. "UV-Curable Hybrid Polyurethanes." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1406471515.
Повний текст джерелаKeltner, Lucas A. "UV Properties of Galileons." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1436970587.
Повний текст джерелаXu, Rongcheng Xu. "Anticorrosion UV Curable Alkyds." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1510747493751126.
Повний текст джерелаPavelka, Radek. "Detekce nánosu UV lepidla." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377342.
Повний текст джерелаTřešňáková, Andrea. "Materiálový tisk UV dozimetrů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316153.
Повний текст джерелаHuang, Ying. "Applications of UV/H2O2, UV/NO3–, and UV-vis/ferrite/sulfite Advanced Oxidation Processes to Remove Contaminants of Emerging Concern for Wastewater Treatment." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535703890003601.
Повний текст джерелаYe, Zhengcai. "UV Disinfection between Concentric Cylinders." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14641.
Повний текст джерелаSchreier, Wolfgang. "UV-Strahlung und DNA-Schäden." Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-87818.
Повний текст джерелаNilsson, Henric. "UV-tork - analys av drift :." Thesis, Karlstads universitet, Avdelningen för maskin- och materialteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-14259.
Повний текст джерелаGrant, Robert Wallace. "A UV Zeeman-effect polarizer." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24674.
Повний текст джерелаScience, Faculty of
Physics and Astronomy, Department of
Graduate
Pinho, George Paul. "UV laser ablation of metals." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0016/NQ38265.pdf.
Повний текст джерелаForster, Piers Maxwell de Ferranti. "Measuring and modelling UV radiation." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384875.
Повний текст джерелаKantola, J. (Joni). "UV-absorboivat selluloosananokiteet kalvojen lisäaineena." Bachelor's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201605171790.
Повний текст джерелаEmmerson, Gregory Daniel. "Novel direct UV written devices." Thesis, University of Southampton, 2003. https://eprints.soton.ac.uk/42435/.
Повний текст джерелаAdikan, Faisal Rafiq Mahamd. "Direct UV-written waveguide devices." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/65507/.
Повний текст джерелаAhmed, Masud Omar. "Teststation för industriella UV-celler." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-165036.
Повний текст джерелаGE Healthcare Bio-Sciences AB i Umeå tillverkar ett flertal system, ett av systemen är vätskekromatografen. Vätskekromatografen är en kemisk separationsmetod som använder sig av en UV-monitor, UV-detektor och en UV-cell för att mäta absorptionen av en lösning och framta koncentrationen av det eftersökta ämnet. På anläggningen i Umeå tillverkas två typer av UV-celler; laborationceller och industriceller. För labbcellerna har GE utvecklat en teststation som testar och utvärderar UV och flödesegenskaper samt lagrar data i GE:s egen produktionsdatabas, Prodas. Den befintliga stationen för industriceller är äldre och omodern, en utveckling behövs för att upprätthålla högre kvalité. Syftet med detta projekt är att uppdatera teststationen för industriella UV-celler till samma nivå som stationen för laborationsceller. Det primära målet är att konstruera och designa en teststation för industriella UV-celler som kan mäta tryck, flöde och absorption. Det sekundära målet är att upptäcka och om möjligt verkställa lösningar som kommer effektivisera och automatisera mätningarna. En prototyp av en teststation för industriella UV-celler baserat på den för laborationceller har framtagits, och består av en adapterlösning som används för att sammanlänka ljusbanan från monitorn genom flödescellen till detektorn. Prototypen kan enbart utföra absorption och läckagemätningar. Automatisering och effektivisering har utförts i form av scripts som används för att genomföra absorptions och läckagemätning. Teststationen kräver fortsatt vidareutveckling innan den kan används i produktionslinjen.
Neto, Miguel Angelo da Costa. "Emissões UV em diamantes naturais." Master's thesis, Universidade de Aveiro, 1997. http://hdl.handle.net/10773/17469.
Повний текст джерелаNesta tese são estudados centros ópticos que aparecem na região UV do espectro electromagnético de um diamante natural tipo Ia. Longe de pretender ser um estudo pormenorizado e exaustivo desses centros ópticos, esta tese visa fundamentalmente o aprofundamento e respectiva aplicação de conhecimentos adquiridos ao longo da licenciatura e inestrado. No primeiro capítulo desta tese é apresentada uma descrição das principais propriedades fisicas dos diamantes, assim como a sua classificação. No segundo capítulo é feita a caracterização e distinção de defeitos e centros ópticos em diamantes. É ainda apresentada uma descrição da absorção e emissão da luz em centros ópticos, assim como uma breve enumeração dos principais centros ópticos observados em diamante. O tema principal do terceiro capítulo refere-se à interacção electrão-fonão. Neste capítulo são apresentadas algumas considerações teóricas e feitas aproximações que permitem explicar a forma como a luz se comporta em centros ópticos de um material cristalino. As técnicas experimentais de espectroscopia óptica utilizadas nesta tese são apresentadas no quarto capítulo. Aqui descrevemos o equipamento e os esquemas das montagens experimentais utilizadas em absorção e luminescência. No final do capítulo é feita uma descrição do efeito Raman, assim como do equipamento utilizado na obtenção dos respectivos espectros. No quinto e último capítulo são apresentados os dados e feita a análise dos resultados experimentais obtidos a partir das técnicas experimentais descritas no quarto capítulo. Começamos pelo estudo Raman do cristal, pois este permitiu confirmar que o diamante utilizado nos estudos é pouco homogéneo. Seguidamente, é feito o estudo da luminescência com o comprimento de onda de excitação e com a temperatura. Os resultados desses espectros Emissões UV em diamantes naturais vi Sumário levou-nos a obter a reconstrução das bandas vibrónicas dos centros ópticos em estudo. Além destes espectros, são ainda apresentados espectros de absorção e resolvidos no tempo, tendo estes últimos provado que os centros em causa têm um tempo de vida muito curto. Por último, são apresentadas as principais conclusões dos estudos efectuados e sugerem-se trabalhos futuros para melhor conhecimento dos centros ópticos estudados durante esta tese.
McGivney, Eric. "Comparison of UV-C and Vacuum- UV induced AOT on the acute mortality of microalgae." Thesis, KTH, Mark- och vattenteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171839.
Повний текст джерелаLani, Mohd Nizam. "Inactivation of Lysteria monocytogenes by pulsed UV illumination and photorepair recovery of UV-damaged cells." Thesis, University of Strathclyde, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443144.
Повний текст джерелаDevant, Ludovic. "Etude des mécanismes de vieillissement d'un caoutchouc EPDM (Ethylène Propylène Diene Monomer)." Thesis, Orléans, 2011. http://www.theses.fr/2011ORLE2067.
Повний текст джерелаThis thesis is devoted to the study of UV aging of an EPDM rubber with particular emphasis on additives involved invulcanization. For this purpose, we use techniques suitable for surface analysis such as ToF-SIMS, XPS, ATR-FTIR, SEMEDXand AFM. We first determine the initial chemical composition of the surface of the EPDM rubber. We identify the by-products of vulcanization and qualitatively determine their distribution on the surface. The ToF-SIMS depth profiles exhibit a layer enriched in additives on the surface of the rubber due to migration by crystallization or by the “bloom effect” after vulcanization. In addition, images from 3D profiles show that some of these additives are adsorbed on the no-black fillers. In the second part, we study the effect of artificial aging on the rubber and the additives. Our results indicate that both the surface of the rubber and the two rubber accelerators, MBT and ZBPT, undergoes significant chemical and morphological changes characterized by chemical oxidation and structural degradation. Our Kinetic studies show that the most important chemical changes take place during the first 100h. The final chapter is devoted to the study of industrial rubber, currently used in vehicle body seals, and discusses on understanding of the behavior of the processing agents in the initial state and during aging. These agents play a key role in the chemical composition of the rubber in the initial state, despite the small amounts incorporated. We show that these compounds cover the surface and form a layer about 500 nm thick, very resistant to aging
Olsson, Sara. "Enhancing UV-protection of clear coated wood by utilizing reactive UV-absorber and epoxyfunctionalized soybean oil." Licentiate thesis, KTH, Ytbehandlingsteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92220.
Повний текст джерелаDetta arbete beskriver utvecklandet av en ny förbehandling för klarlackat trä som syftar till att öka UV-beständigheten av träprodukter för utomhusbruk. Arbetet syftar även till att utveckla systemet till att bli miljövänligare än nuvarande liknande produkter på marknaden. Förbehandlingen utnyttjar primära epoxidgrupper hos den reaktiva UV-absorbenten 2-hydroxy-4(2,3-epoxypropoxy)-bensofenon (HEPBP) för att skapa kovalenta bindningar till hydroxylgrupper hos träet. Den andra komponenten i systemet är förnyelsebar epoxiderad sojaolja (ESBO) innehållande sekundära epoxidgrupper som även dessa kan binda kovalent till träytan, samt gynna kompatibiliteten mellan de två reaktanterna. Oljan verkar dessutom öka flexibiliteten av förbehandlingen, samtidigt som den minskar mängden vatten som tränger in i cellväggen. Studien utfördes i två delar där den första delen fokuserade enbart på att utveckla förbehandlingen, medan den andra delen utnyttjade information från den första delen för att utvärdera funktionen av förbehandlingen i kombination med en akrylatbaserad klarlack. Ympningsreaktionerna utfördes på tunna träfaner i uppvärmd lösning. I första delen studerades hur temperatur- och reaktionstidsförändringar påverkar den slutgiltiga prestationen av förbehandlingen, och FTIR användes då för att verifiera ympningen. Resultaten visar att ympningen var lyckad för reaktioner utförda vid reaktionstemperaturer över 90 °C. För del två ansågs ympningen lyckad för både dopp- och kokreaktionen, vilket tyder på att betydligt kortare reaktionstider skulle kunna användas. Prover från både del ett och två utsattes sedan för accelererad åldring där färgförändringen av proverna mättes för att uppskatta UV-resistensen av behandlingarna. Första delen visade på ökad UV-beständighet för vissa av behandlingarna. Del två var dock svårare att utvärdera till följd av klarlacken, men en liten förbättring kan noteras för prover som är förbehandlade. En positiv notering från del två är även att adhesionen mellan klarlacken och träytan inte verkar ha påverkats av förbehandlingen. Med detta som grund dras slutsatsen att den föreslagna förbehandlingen kan förbättra UV-resistensen av klarlackat trä för utomhusbruk.
QC 20120330
Bagheri, Mehdi. "Computer-aided study of Vacuum-UV/UV process for removal of organic pollutants from water supplies." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/57463.
Повний текст джерелаApplied Science, Faculty of
Chemical and Biological Engineering, Department of
Graduate
Chintalapati, Pranav Sankar. "Degradation of cyanobacterial toxin microcystin-LR using UV/vacuum-UV advanced oxidation for drinking water treatment." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/63028.
Повний текст джерелаApplied Science, Faculty of
Chemical and Biological Engineering, Department of
Graduate
Sarrut, Morgan. "Optimisation de méthodes bidimensionnelles en ligne LCxLC-UV/MS et LCxSFC-UV pour l’analyse d’échantillons complexes." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1189/document.
Повний текст джерелаComprehensive two-dimensional liquid chromatography is a powerful but complex separative technique. After detailing the interest of such a technique, the method development issues and the experimental conditions employed throughout this work, a particular attention is paid to the optimization of LCxLC methods. Accordingly an optimization procedure based on Pareto-optimal method is described. The predicted optimal conditions are then applied to experimental RPLCxRPLC separations of complex samples of peptides and compared with 1D-RPLC in terms of peak capacity, analysis time and sensitivity clearly showing the advantage of RPLCxRPLC approach.The optimization of a HICxRPLC-UV/MS method for the exhaustive characterization of an antibody-drug conjugate is achieved highlighting the high complementarity of the different detection modes used both in 1D and 2D. Finally, a proof of concept concerning the implementation of RPLCxSFC coupling is achieved with the aim of increasing the separation space coverage for neutral compounds. The optimized RPLCxSFC separation is then compared with an optimized RPLCxRPLC approach for the analysis of a bio-oil sample showing that RPLCxSFC is a credible alternative for the separation of such a sample
Klein, Fátima Rosane Schuquel. "Alterações bioquímicas em espécies do gênero Alternanthera quando expostas à radiação UV-B e UV-C." Universidade Federal de Pelotas, 2014. http://repositorio.ufpel.edu.br/handle/ri/2008.
Повний текст джерелаThe knowledge about ultraviolet (UV) effects in medicinal plants is still limited when compared with what is already known about other environmental factors. To investigate this issue we carried out two experiments: the first aimed to study the production of betalains, total flavonoid, and antioxidant activity in plants of Alternanthera sessilis, Alternanthera brasiliana, Alternanthera tenella, and Alternanthera philoxeroides, which were exposed to UV-B radiation (280-315 nm) for different periods; the second performed the same analyses, adding the investigation of the antioxidant enzymes in A. sessilis, A. brasiliana, and A. philoxeroides, submitted to UV-C (100-280 nm) for different periods of exposure. In the first experiment, the plants grown for 50 days in greenhouse were exposed to different UV-B irradiation periods (0, 2, 4, 6, and 8 hours). The collections were conducted in two periods, immediately after each exposure time (0h) and after 24 hours, to view a possible recovery. During the period inside the greenhouse, the plants remained under natural light. The experimental design was completely randomized, in 4 x 5 x 2 factorial scheme with five replicates by treatment, each one represented by a plant. Among the species studied, A. sessilis showed higher levels of total betacyanins, betaxanthin, flavonoids, and greater antioxidant capacity compared to other species throughout the period of exposure to radiation. We observed that in the species A. sessilis and A. brasiliana the recovery time favored an increase in the production of these compounds. The species A. tenella and A. philoxeroides showed no increase in the production of their metabolites, after UV-B radiation exposure. A randomized experiment in factorial design 3 x 5 was conducted to analyze the effects of UV-C radiation with three species A. sessilis, A. brasiliana, and A. philoxeroides for times intervals of 0, 5, 10, 15, and 20 min, with five replicates for treatment. A. sessilis showed a higher increase in metabolites under UV-C radiation between 10 and 12 minutes of exposure; in A. brasiliana it was observed after 16 minutes of exposure. The species A. philoxeroides showed no increase in its content after irradiation, remaining equal to control. For the activity of the enzyme superoxide dismutase (SOD), the species showed no significantly differences, but for catalase (CAT) and ascorbate peroxidase (APX) showed greater activity. An increase in malondialdehyde (MDA) content under UV-C radiation was viewed in A. philoxeroides and A. sessilis. In this experiment it was observed that both radiations caused changes in the content of total betacyanins, betaxanthin, and flavonoids in the species A. sessilis and A. brasiliana, and UV-C radiation changed enzymatic activity only in the species A. philoxeroides. These changes depend on the time exposure to radiation and the defense mechanisms triggered.
Ainda é limitado o conhecimento dos efeitos da radiação ultravioleta (UV) em plantas medicinais quando comparados com o que já se conhece sobre outros fatores ambientais. Para investigar essas foram realizados dois experimentos: o primeiro com o objetivo de estudar a produção de betalaínas, flavonoides totais e atividade antioxidante em plantas de Alternanthera sessilis, Alternanthera brasiliana, Alternanthera tenella e Alternanthera philoxeroides expostas por diferentes períodos à radiação UV-B (280-315 nm) e, no segundo foram realizadas as mesmas análises, sendo, nesse caso investigada também a resposta de enzimas antioxidantes em A. sessilis, A. brasiliana e A. philoxeroides submetidas a diferentes tempos de exposição à UV-C (100-280 nm). No primeiro experimento, plantas cultivadas há 50 dias em casa de vegetação foram expostas a diferentes tempos de radiação UV-B (0, 2, 4, 6 e 8 horas). As coletas foram realizadas em dois períodos, imediatamente após cada tempo de exposição (0h) e após 24h dos mesmos, para visualizar uma possível recuperação. Até a realização da segunda coleta as plantas permaneceram sob iluminação natural, em casa de vegetação. O delineamento experimental foi inteiramente ao acaso em esquema fatorial 4 x 5 x 2 com 5 repetições por tratamento, sendo cada uma representada por uma planta. Dentre as espécies em estudo, A. sessilis foi a que apresentou maior teor de betacianinas totais, betaxantina, flavonoides e maior poder antioxidante quando comparada com as demais espécies em todos os tempos de exposição à radiação. Nas espécies A. sessilis e A. brasiliana foi observado que o tempo de recuperação favoreceu o aumento da produção desses compostos. As espécies A. tenella e A. philoxeroides não apresentaram incremento nos seus metabólitos após exposição à radiação UV-B. Para analisar os efeitos da radiação UV-C foi delineado um experimento inteiramente ao acaso em esquema fatorial 3 x 5, com três espécies (A. sessilis, A. brasiliana e A. philoxeroides) em cinco tempos de radiação (0, 5, 10, 15 e 20 min), com cinco repetições por tratamento. Os resultados dos metabólitos estudados diante da radiação UV-C demonstraram que houve maior incremento destes compostos em A. sessilis, entre 10 e 12 minutos de exposição e em A. brasiliana após 16 minutos de exposição. A espécie A. philoxeroides não apresentou incremento do seu conteúdo depois de irradiadas mantendo-se iguais ao controle. Para a atividade da enzima SOD (Superóxido dismutase), as espécies não apresentaram diferenças significativas enquanto para CAT (Catalase) e APX (Ascorbato peroxidase), A. philoxeroides mostrou maior atividade. Aumento do conteúdo de MDA (malondialdeído) foi verificado em A. philoxeroides e A. sessilis diante da radiação UV-C. Nas condições deste experimento observou-se que ambas as radiações promovem mudanças no conteúdo de betacianinas totais, betaxantinas, e flavonoides nas espécies A. sessilis e A. brasiliana e que a radiação UV-C altera a atividade enzimática somente na espécie A. philoxeroides.Estas mudanças dependem do tempo de exposição e dos mecanismos de defesa acionados diante das radiações.
Narayan, Vicrant S. "HPLC analysis of nucleotides." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/104440/1/Vicrant_Narayan_Thesis.pdf.
Повний текст джерелаTjörnhammar, Staffan. "Pulsed Yb:KYW laser and UV generation." Thesis, KTH, Laserfysik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-51595.
Повний текст джерелаI detta examensarbete utformades och konstruerades en pulsad UV-laser. Dessutom undersöktes effekterna av absorption i ett volymbraggitter. Som laserkristall användes Yb:KYW vilken pumpades med en diodlaser. Lasring skedde vid 1029,2 nm med en bandbredd av 0,23 nm genom att ett volymbraggitter användes som inkopplingsspegel för att kontrollera spectrumet. Pulser generades genom passiv Q-switching med en Cr:YAG som mättnadsbar absorbator inne i kaviteten. Den maximala toppeffekten var 3,8 kW vid 0.35 W medeleffekt, 4 kHz repetitionsfrekvens och en pulsbredd på 16 ns. Den maximala medeleffekten var 1.3 W med en toppeffekt på 3,8 kW, 20 kHz repetitionsfrekvens och en pulsbredd på 20 ns. Genom frekvensdubbling i en LBO kristall genererades grönt ljus vid våglängden 514,7 nm. Den maximala medeleffekten var 130 mW med en optisk verkningsgrad från den fundamentala våglängden på 10 %. Sedan blandades det infraröda och det gröna ljuset i en andra LBO kristall för att generera UV-ljus, vid en våglängd om 343 nm. Den högsta medeleffekten av UV var cirka 23 mW med en optisk verkningsgrad, med avseende på det gröna ljuset, på ungefär 20%. En begränsning av laser var att Cr:YAG kristallen blektes inte enbart av lasern utan även av pumpen. Detta resulterade i fallande toppeffekt med ökande pumpeffekt, vilket begränsade effektiviteten i den ickelinjära konverteringen. Termisk fraktur på Cr:YAG kristallen var en begränsande faktor för cirkulerande medeleffekten i kaviteten, medan brännskador på Yb-kristallens antireflexbehandling begränsade toppeffekten. Effekterna i en laser vid användning av en alltför hög effekt i förhållande till nivån av absorption i ett volymbraggitter studerades också. Effekterna av både resonanta och ickeresonanta strålar undersöktes. Eftersom intensiteten av en resonant ståle minskar ungefär exponentiellt i ett volymbraggitter kommer temperaturen, på grund av absorption, fördelas ojämnt i propageringsriktningen. Detta resulterar i olika termiska expansion med en längsgående varierad gitterperiod som följd. Detta orsakar en minskning utav både reflektiviteten och den spektrala selektiviteten. Reflektiviteten i gittret som användes i dessa experiment minskade från 99,4 % till 93 %. Dessutom visades det experimentellt att om ett volymbraggitter absorberar en icke försumbar del av en ickeresonant stråle kommer värmebelastning att deformera volymenbraggittret. Därför är det inte lämpligt att använda ett sådant gitter som inkopplingsspegel i en laser.
Borgström, Roger, and Daniel Enesten. "Uv-ljus som vattenrening i kylanläggning." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-19096.
Повний текст джерелаThe objective with this project has been to purify water in the Aqua Interiör in Laholm proprietary water furniture using uv-light. These furnitures are rent out to customers to get moderately cold water, with or without sparkling. The water furnitures is directly connected to the water system. A problem with the water furniture is that it is not suitable for hospitals because there is an increased bacterial content in the water, however, below the prescribed limits. In hospitals there is a higher requirement for water quality. The objective with the uv-radiation is to solve this problem. A reactor has been developed in which the water is uv-radiated in a spiral made of quartz glass. A control system controls the radiation of the water and that no problem occurs during the radiation.A display with touch-function has been used to get an attractive way to present important information about lamp status and temperature inside the reactor. This is how the service personnel receive information on the lamp if it needs replacing or not. A log of the system was created to ensure that no unauthorized person would be able to delete the log data that is created. The touch-display made it a solid feeling of quality and new technology.The use of the uv filter has resulted in a positive result, with purified water. An ambition is that further development of this project will lead to a finished product that will be sold / out rented by Aqua Interiör i Laholm .
Bykov, Vladimir J. "UV-induced DNA damage in humans /." Stockholm, 1999. http://diss.kib.ki.se/1999/91-628-3345-6/.
Повний текст джерелаWissen, Matthias. "Thermisches Nanoimprint in UV vernetzende Fotolacke." Tönning Lübeck Marburg Der Andere Verl, 2007. http://d-nb.info/988176343/04.
Повний текст джерелаTaylor, Tammye L. "UV photochemistry of synthetic model peptides." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/26966.
Повний текст джерелаGreuters, Jako. "UV laser micromachining of photonics materials." Thesis, University of Hull, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.431044.
Повний текст джерелаHoughton, Steven. "Hyperbranched polyesters in UV-curable coatings." Thesis, University of Kent, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274354.
Повний текст джерелаErdemli, Ӧmer Can. "UV stabilisation of poly(ethylene terephthalate)." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27455.
Повний текст джерелаWaldron, Daniel E. "Instrument design in UV polarised spectroscopy." Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/51549/.
Повний текст джерелаWeldegebriel, Amos. "A UV detector for microfluidic devices." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/17626.
Повний текст джерелаDepartment of Chemistry
Christopher T. Culbertson
Chemical separation involves selective movement of a component out of a region shared by multiple components into a region where it is the major occupant. The history of the field of chemical separations as a concept can be dated back to ancient times when people started improving the quality of life by separation of good materials from bad ones. Since then the field of chemical separation has become one of the most continually evolving branches of chemical science and encompasses numerous different techniques and principles. An analytical chemist’s quest for a better way of selective identification and quantification of a component by separating it from its mixture is the cause for these ever evolving techniques. As a result, today there are numerous varieties of analytical techniques for the separation of complex mixtures. High Performance Liquid Chromatography (HPLC), Gas Chromatography (GC), Capillary Electrophoresis (CE) and Gel Electrophoresis are a few out of a long list. Each these techniques manipulates the different physical and chemical properties of an analyte to achieve a useful separation and thus certain techniques will be suited for certain molecules. This work primarily focuses on the use of Capillary Electrophoresis as a separation technique. The mechanism of separation in Capillary Zone Electrophoresis and principles of UV detection will discussed in chapter one. Chapter two contains a discussion about the application of Capillary Electrophoresis (CE) on microfluidc devices. This will include sections on: microfabrication techniques of PDMS and photosensitized PDMS (photoPDMS), a UV detector for microfluidic devices and its application for the detection of wheat proteins. In Chapter three we report the experimental part of this project which includes; investigations on the effect of UV exposure time and thermal curing time on feature dimensions of photoPDMS microfluidic device, investigations on the injection and separation performances of the device, characterization of a UV detector set up and its application for the separation and detection of wheat gliadin proteins. The results of these investigations are presented in chapter four.
Marlow, Gregory. "Week 08, Video 04: UV Unwrapping." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/digital-animation-videos-oer/58.
Повний текст джерелаMarlow, Gregory. "Week 08, Video 05: UV Unfold." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/digital-animation-videos-oer/59.
Повний текст джерелаMarlow, Gregory. "Week 08, Video 06: UV Export." Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/digital-animation-videos-oer/60.
Повний текст джерелаTouré, Mamadou Lamine. "Exposition UV spectrale : instrumentation et modélisation." Université Joseph Fourier (Grenoble), 2003. http://www.theses.fr/2003GRE10034.
Повний текст джерелаHouët, Mickaël Brogniez Colette. "Spectroradiométrie du rayonnement UV au sol." [S.l.] : [s.n.], 2003. http://www.univ-lille1.fr/bustl-grisemine/pdf/extheses/50376-2003-149-150.pdf.
Повний текст джерелаCui, Yong. "UV pumped holosteric optical parametric oscillator." Thesis, University of St Andrews, 1993. http://hdl.handle.net/10023/14889.
Повний текст джерела