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Мадан, Роман Григорович. "Фотоперетворювачі на основі наноструктурованого кремнію." Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/28855.
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Робота складається з 55 сторінок, 4 розділів та містить 35 ілюстрацій, 24 таблиці та 19 джерел в переліку посилань.
Актуальність теми – інтерес до створення гібридних органічних та неорганічних фотоперетворювачів, що мають більш низьку вартість, ніж традиційні.
Метою роботи є дослідження вольт-амперних характеристик фотоперетворювачів. Порівняння характеристик пористого кремнію, отриманого за різного часу травлення.
Об’єкт дослідження – фотоперетворювачі на основі наноструктурованого кремнію.
Предмет дослідження – методи одержання та морфологія наноструктурованого шару оксиду індію й олова, а також плівки меланіну.The work consists of 55 pages, 4 sections and contains 35 illustrations, 24 tables and 19 sources in the list of references. The actuality of the topic is the interest in the creation of hybrid organic and inorganic photoconductors that have a lower cost than traditional ones. The purpose of the work is to study the volt-ampere characteristics of nanostructured silicon solar cells. Comparison of the characteristics of porous silicon obtained at different times of etching. The object of research is nanostructured silicon solar cells. Subject of research - methods of obtaining and morphology of nanostructured layer of indium and tin oxide, as well as melanine films.
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Szmajda, Brett A. "Subcortical pathways for colour vision /." Connect to thesis, 2006. http://eprints.unimelb.edu.au/archive/00003165.
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Thesis (Ph.D.)--University of Melbourne, The National Vision Research Institute of Australia and Dept. of Optometry & Vision Sciences, 2007.Typescript. Includes bibliographical references (leaves 95-111).
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Pedron, Ilario. "Digital image processing for cancer cell finding using color images." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61720.
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Andrew, Harold Gibbons. "Design and Application of Optical Polymers." Kyoto University, 2019. http://hdl.handle.net/2433/242585.
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Pino, Javier. "Transgneic Endothelin 3 Regulates Murine Pigment Production and Coat Color." FIU Digital Commons, 2017. https://digitalcommons.fiu.edu/etd/3533.
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Pigmentation plays a protective role against damage caused by ultraviolet (UV) irradiation. Humans with fair skin and light hair have a higher susceptibility to UV-induced DNA damage that can lead to the development of skin cancers. The melanocytes found in the skin and hair follicles depend on different signaling molecules for their proper development and pigment production. α-Melanocyte Stimulating Hormone (α-msh) binds to the Melanocortin 1 receptor (Mc1r) to regulate pigment production and the switch between eumelanin and pheomelanin. Lethal yellow mice (Ay) overexpress the agouti signaling protein, which inhibits the binding of α-msh, resulting in a yellow coat color phenotype. Endothelin 3 (Edn3) encodes for a ligand involved in melanocyte development by regulating the differentiation, proliferation and migration of melanocyte precursors. A tetracycline inducible transgenic mouse in which Edn3 was placed under the keratin 5 promoter (K5-tTA;TRE-Edn3-lacZ) displays a hyperpigmentation phenotype due to the accumulation of melanocytes in the skin and an increase in hair pigment. Comparative analysis of dorsal hairs from Ay and Ay; K5-tTA;TRE-Edn3-lacZ mice using high performance liquid chromatography showed that transgenic Edn3 expression significantly increased both eumelanin and pheomelanin. No significant difference in the number of follicular melanocytes between Edn3 transgenic and non-transgenic mice was evidenced by immunofluorescence using an antibody against Tyrosinase related protein 1. Gene expression analysis of hair follicles showed that Edn3 upregulates the expression of melanogenic genes. Deactivation of transgenic Edn3 is possible with doxycycline (dox) treatment. To test if transgenic Edn3 expression is required to rescue and maintain a dark pigmentation phenotype in Ay mice, dox was administered during embryonic and postnatal development to manipulate transgenic Edn3 expression. Results showed that transgenic Edn3 expression is required to maintain a dark pigmentation phenotype after birth but is independent of a developmental requirement. Transgenic Edn3 expression in Mc1re/e mice also resulted in a darkened coat color. Our results indicate that the paracrine expression of Edn3 from keratinocytes is capable of generating and maintaining a dark coat color by the regulation of melanogenic genes independent of Mc1r signaling. The results of this study may open new approaches to the treatment of hypopigmentation disorders.
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Vedin, Joel. "Utilizing an efficient color-conversion layer for realization of a white light-emitting electrochemical cell." Thesis, Umeå universitet, Institutionen för fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-122097.
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Organic semiconducting materials have received a lot of attention in recent years and can now be found in many applications. One of the applications, the light emitting electrochemical cell (LEC) has emerged due to its flat and lightweight device structure, low operating voltage, and possibility to be fully solution processed. Today LECs can emit light of various colors, but to be applicable in the lighting industry, white light need to be produced in an efficient way. White light on the other hand, is one of the toughest "colors" to achieve in an efficient way, and is of particular interest in general lighting applications, where high color-rendering index devices are necessary. In this thesis I show that blue light can be partially converted, into white light, by utilizing the photoluminescence of color conversion layers (CCLs). Furthermore, I show that a high color-quality white light can be attained by adopting a blue-emitting LEC with a CCL. Particularly, three different color-conversion materials were embedded onto a blue bottom-emitting LEC, to study the resulting spectrum. One of the materials, MEH-PPV, have good absorption compatibility with the electroluminescence of the blue emitters, but the materials photoluminescence do not cover the red to deep-red range of the spectrum. These parts of the spectrum are necessary to obtain high color rendering indices (≥80). A single layer of MEH-PPV adapted onto a blue-emitting LEC, led to a cold white LEC with CIE-coordinates x = 0.29, and y = 0.36, color-rendering index = 71, and correlated color temperature = 7200 K. These properties makes it potentially useful in outdoor-lighting applications. The photoluminescence of another studied color-converting material, polymer red, covers the red to deep-red range of the spectrum but the material lacks absorption in the green parts of the blue emitters electroluminescence spectrum. Thus it is necessary to combine it with MEH-PPV to be able to absorb all wavelengths from the blue-emitter and get a broad light-spectrum out of the device. In order to preserve a part of the blue light, a new device configuration was designed. It features a top-emitting blue LEC with a dual-layer CCL which reach an impressive color rendering index = 89 at a correlated color temperature = 6400 K (CIE-coordinates x = 0.31, y = 0.33). The color-rendering index is the highest reported for a white LEC. The absence of UV-, and IR-radiation, together with the high color rendering properties make the white LEC a possible candidate for even the most demanding lighting-applications, such as art galleries, and shop display windows, together with indoor lighting. In this thesis, I show that the CCLs function well. However, for the LECs to be worthy competitors, the efficiency and lifetime of the blue emitter need improvements.
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Pinidiyaarachchi, Amalka. "Digital Image Analysis of Cells : Applications in 2D, 3D and Time." Doctoral thesis, Uppsala universitet, Centrum för bildanalys, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9541.
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Light microscopes are essential research tools in biology and medicine. Cell and tissue staining methods have improved immensely over the years and microscopes are now equipped with digital image acquisition capabilities. The image data produced require development of specialized analysis methods. This thesis presents digital image analysis methods for cell image data in 2D, 3D and time sequences. Stem cells have the capability to differentiate into specific cell types. The mechanism behind differentiation can be studied by tracking cells over time. This thesis presents a combined segmentation and tracking algorithm for time sequence images of neural stem cells.The method handles splitting and merging of cells and the results are similar to those achieved by manual tracking. Methods for detecting and localizing signals from fluorescence stained biomolecules are essential when studying how they function and interact. A study of Smad proteins, that serve as transcription factors by forming complexes and enter the cell nucleus, is included in the thesis. Confocal microscopy images of cell nuclei are delineated using gradient information, and Smad complexes are localized using a novel method for 3D signal detection. Thus, the localization of Smad complexes in relation to the nuclear membrane can be analyzed. A detailed comparison between the proposed and previous methods for detection of point-source signals is presented, showing that the proposed method has better resolving power and is more robust to noise. In this thesis, it is also shown how cell confluence can be measured by classification of wavelet based texture features. Monitoring cell confluence is valuable for optimization of cell culture parameters and cell harvest. The results obtained agree with visual observations and provide an efficient approach to monitor cell confluence and detect necrosis. Quantitative measurements on cells are important in both cytology and histology. The color provided by Pap (Papanicolaou) staining increases the available image information. The thesis explores different color spaces of Pap smear images from thyroid nodules, with the aim of finding the representation that maximizes detection of malignancies using color information in addition to quantitative morphological parameters. The presented methods provide useful tools for cell image analysis, but they can of course also be used for other image analysis applications.
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Baum, Michael [Verfasser], and Karsten [Akademischer Betreuer] Rippe. "Protein Mobility and Interaction Measurements in Living Cells by Dual-Color Multi-Focus Fluorescence Cross-Correlation Spectroscopy / Michael Baum ; Betreuer: Karsten Rippe." Heidelberg : Universitätsbibliothek Heidelberg, 2014. http://d-nb.info/1179925017/34.
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Kumar, Sarker Shuronjit. "Textile wastewater treatment and electricity generation by Microbial Fuel Cell with freezing technology as pre-treatment (A No-water discharge approach)." Thesis, KTH, Mark- och vattenteknik (flyttat 20130630), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171813.
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Textile wastewater contains very high concentration of color, COD, suspended solids and other pollutants. Methods such as reverse osmosis, nano-filtration and ultrafiltration are known to be effective to remove some pollutants but these methods are very expensive. A new treatment approach which is the combination of freezing technology and Microbial Fuel Cell technology has been studied in this thesis work and seems to have great potential to remove color and COD from textile wastewater. Freezing splits a diluted stream into two different streams; one stream in which water is transferred into ice with a low pollutant concentration leaving a concentrated stream with pollutants. Microbial fuel cell uses the concentrated stream to convert biochemical energy into electrical energy. Three different types of substrates, KMnO4 solution, municipal wastewater and orange juice, were studied. Freezing technology can produce high quality water by neutralizing pH-value; close to 7.0, removal of COD is more than 95% and separating color by almost 100%. Similarly MFC can remove color, and COD by 88.8% and 73.6% respectively. The maximum generation of electrical power by MFC was estimated to 1.03 mW/m2 of electrode area. The findings suggest that this new approach of textile wastewater treatment can be a costeffective way to remove pollutants from textile wastewater while generating some electricity.
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Arriaga, Odra O. "Nature, Essence and Spirit| An Artistic Process of Space, Lines and Color from the Level of Cells to the Large Oceanic Water World." Thesis, The University of Texas Rio Grande Valley, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10263731.
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The methods, experimentations, philosophies and influential artists mentioned in this thesis all form part of my artistic exploration and art from the level of cells to the large oceanic water world. As an artist of Fine Arts at the University of Texas, Rio Grande Valley, my main emphasis is to associate these concepts with my personal experiences, cultural traditions and artistic perspectives with my likes for lines, colors and spaces in what I called, Nature, Essence and Spirit. Furthermore, my artistic approach was mostly influenced by the views of artists such as, Vasily Kandinsky, Frank Stella, Piet Mondrian, Paul Klee, Dale Chihuly and Tauba Auerbach.
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Miller, Jeffrey Christopher 1974. "A two-color bacterial two-hybrid system for selecting sequence-specific DNA-binding proteins via fluorescence activated cell sorting." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/8388.
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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Biology, 2002.Vita.
Includes bibliographical references.
Proteins that recognize specific DNA sequences play a major role in many biological processes, and the ability to select or design novel DNA binding proteins could have a major impact on many areas of biotechnology and medicine. This thesis begins with background information on zinc finger DNA-binding proteins and on methods to select these proteins, and how they can be used to regulate endogenous human genes. Next, I describe a structural and biochemical study of a DNA-binding protein which demonstrates some of the complexities of the protein-DNA interface, and which highlights difficulties for designing sequence-specific proteins via a simple code. I then develop an experimental system (starting with a pre-existing bacterial two-hybrid selection system) which allows the selection of proteins based on their preference of one DNA site over another. I use this system to attempt to attenuate the affinity of a zinc finger protein without destroying its specificity. Finally, I describe an experiment in which I select a new domain that adds sequence specificity to a pre-existing protein from a library of completely random peptides.
by Jeffrey Christopher Miller.
Ph.D.
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Tamang, Asman [Verfasser], Veit [Akademischer Betreuer] Wagner, Veit [Gutachter] Wagner, Werner [Gutachter] Henkel, Dietmar [Gutachter] Knipp, and Sören [Gutachter] Peik. "Opto-electronics of thin-film silicon solar cells and color sensors / Asman Tamang ; Gutachter: Veit Wagner, Werner Henkel, Dietmar Knipp, Sören Peik ; Betreuer: Veit Wagner." Bremen : IRC-Library, Information Resource Center der Jacobs University Bremen, 2018. http://d-nb.info/1161606769/34.
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Kottler, Verena [Verfasser], and Christine [Akademischer Betreuer] Dreyer. "Pigment cell organization and genetic analysis of color pattern formation in the guppy (Poecilia reticulata) / Verena Kottler ; Betreuer: Christine Dreyer." Tübingen : Universitätsbibliothek Tübingen, 2015. http://d-nb.info/1197058036/34.
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Agrawal, Amit. "Nanoparticle Probes for Ultrasensitive Biological Detection and Motor Protein Tracking inside Living Cells." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/19798.
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Semiconductor quantum dots (QDs) have emerged as a new class of fluorescent probes and labeling agents for biological samples. QDs are bright, highly photostable and allow simultaneous excitation of multiple emissions. Owing to these properties, QDs hold exceptional promise in enabling intracellular biochemical studies and diagnosis with unprecedented sensitivity and accuracy. However, use of QD probes inside living cells remains a challenge due to difficulties in delivery of nanoparticles without causing aggregation and imaging single nanoparticles inside living cells. In this dissertation, a systematic approach to deliver, image and locate single QDs inside living cells is presented and the properties of molecular motor protein driven QD transport are studied. First, spectroscopic and imaging methods capable of differentiating single nanoparticles from the aggregates were developed. These technologies were validated by differentiating surface protein expression on viral particles and by enabling rapid counting of single biomolecules. Second, controlled delivery of single QDs into living cells is demonstrated. A surprising finding is that single QDs associate non-specifically with the dynein motor protein complex and are transported to the microtubule organizing center. Accurate localization and tracking of QDs inside cell cytoplasm revealed multiple dynein motor protein attachment resulting in increased velocity of the QDs. Further, spectrin molecule which is known to recruit dynein motor protein complex to phospholipid micelles was found to associate with the QDs. These results may serve as a benchmark for developing new QD surface coatings suitable for intracellular applications. Since, nanoparticles are similar in size to viral pathogens; better understanding of nanoparticle-cell interactions should also help engineer nanoparticle models to study virus-host cell interactions. (Contains AVI format multimedia files)
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Klarbring, Johan. "A first-principles non-equilibrium molecular dynamicsstudy of oxygen diffusion in Sm-doped ceria." Thesis, Linköpings universitet, Teoretisk Fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-118773.
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Solid oxide fuel cells are considered as one of the main alternatives for future sources of clean energy. To further improve their performance, theoretical methods able to describe the diffusion process in candidate electrolyte materials at finite temperatures are needed. The method of choice for simulating systems at finite temperature is molecular dynamics. However, if the forces are calculated directly from the Schrödinger equation (first-principles molecular dynamics) the computational expense is too high to allow long enough simulations to properly capture the diffusion process in most materials. This thesis introduces a method to deal with this problem using an external force field to speed up the diffusion process in the simulation. The method is applied to study the diffusion of oxygen ions in Sm-doped ceria, which has showed promise in its use as an electrolyte. Good agreement with experimental data is demonstrated, indicating high potential for future applications of the method.
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Gouws, Anton. "Optimum temperatures for colour development in apples." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5164.
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Thesis (MScAgric (Horticulture))--University of Stellenbosch, 2010.ENGLISH ABSTRACT: Peel colour is an important quality factor in the production of bi-coloured apple fruit. Most markets set minimum requirements for red colour coverage. Fruit that do not meet these requirements are downgraded and has a major impact on the profitability of apple production in South Africa. South African apple production areas are amongst the warmest in the world. Since anthocyanin accumulation requires induction at low temperature and synthesis require mild temperatures, experiments were conducted to investigate optimum day and night temperatures for red colour development throughout fruit development for red and bi-coloured apple cultivars grown in South Africa. We found that redder strains of bi-coloured apple cultivars did not appear to owe their enhanced pigmentation to higher temperature optima for anthocyanin synthesis. The optimum day temperatures for red colour development in the different cultivars seemed to differ between seasons, but not between production areas. In general, red colour in the cultivars evaluated developed maximally between 17 ºC and 25 ºC. The optimum day temperature for red colour development remained constant throughout fruit development for most cultivars, but increased roughly from 14 ºC to 22 ºC in ‘Cripps’ Pink’ between January and April. The extent of red colour development increased during fruit development in all the cultivars assessed. We were unable to determine optimum induction temperatures for red colour development. ‘Royal Gala’ from Ceres seemed to benefit from induction at 4 ºC while red colour in ‘Fuji’ decreased with decreasing temperature. To explain the presence of anthocyanins in immature apple fruit, we tested the hypothesis that anthocyanins protect the peel from photoinhibition and photooxidative damage during conditions of increased light stress. First we established that the rate of colour change in response to a passing cold front appears to be sufficient to provide photoprotection during a cold snap. Also in agreement with the hypothesis, ‘Cripps Pink’ peel incurred significantly more photoinhibition at low temperature (16 ºC) compared to mild (24 and 32 ºC) and high (40 ºC) temperature under high irradiance with visible light. Recovery rate was temperaturedependent, being the slowest at low temperature and increasing with temperature. The photoapparatus in ‘Cripps Pink’ peel appears to be particularly sensitive to light stress at low temperature throughout the season, with significant photoinhibition occurring even at moderate temperature (24 ºC). The sensitivity of the apple peel to photoinhibition increased throughout the season at lower irradiance levels, but remained the same at higher irradiance. In our final experiment, fruit were exposed to high irradiance at low and mild temperature before exposure to high temperature in combination with high irradiance. This was done to test the hypothesis that photoinhibition incurred during cold snaps predisposes peel to photothermal damage when temperature increases again after the cold snap. Unfortunately, due to the severity of the stress incurred in response to high temperature treatment, the results were inconclusive.
AFRIKAANSE OPSOMMING: Vrugkleur is ‘n belangrike kwaliteitsfaktor in die produksie van tweekleurappels. Die meeste markte stel minimum vereistes vir rooi kleurbedekking. Vrugte wat nie aan hierdie vereistes voldoen nie, word afgegradeer. Suid-Afrika se appel produksie areas word beskou as van die warmste ter wêreld. Antosianien akkumulasie benodig induksie by lae temperature gevolg deur sintese in lig by matige temperature. Gevolglik het swak rooi kleurontwikkeling onder plaaslike toestande ‘n groot impak op die winsgewendheid van appelproduksie in Suid-Afrika. Eksperimente is uitgevoer om die optimum dag- en nagtemperature vir rooi kleurontwikkeling tydens vrugontwikkeling vir die rooi en tweekleur appel kultivars wat in Suid-Afrika geproduseer word te bepaal. Ons het gevind dat die verhoogde pigmentasie van rooier seleksies van tweekleurappel kultivars nie aan ‘n hoër temperatuur optimum vir antosianiensintese toegeskryf kan word nie. Die optimum dag temperature vir rooi kleurontwikkeling vir die onderskeie kultivars verskil klaarblyklik tussen seisoene, maar nie tussen produksie areas nie. Oor die algemeen het kleurontwikkeling maksimaal plaasgevind tussen 17 ºC en 25 ºC. Die optimum dagtemperatuur vir rooi kleurontwikkeling het konstant gebly tydens vrugontwikkeling, buiten vir ‘Cripps’ Pink’ waar dit toegeneem het van ongeveer 14 ºC tot 22 ºC vanaf Januarie tot April. Die mate van rooi kleurontwikkeling het in al die kultivars toegeneem deur die loop van vrugontwikkeling . Ons kon nie daarin slaag om optimum induksie temperature vir rooi kleurontwikkeling vas te stel nie. Rooi kleurontwikkeling van ‘Royal Gala’ uit Ceres is moontlik bevorder deur induksie by 4 ºC, terwyl ‘Fuji’ se rooi kleur afgeneem het met ‘n verlaging in induksie temperatuur. Ten einde die teenwoordigheid van antosianien in onvolwasse appelvruggies te verduidelik, het ons die hipotese getoets dat antosianien die vrugskil beskerm teen fotoinhibisie en fotooksidatiewe beskadiging gedurende tydperke van verhoogde ligstres. Eerstens het ons bevestig dat die tempo van kleurontwikkeling in reaksie op ‘n koue front waarskynlik vinnig genoeg is om fotobeskerming te verleen. Vervolgens is gevind dat ‘Cripps’ Pink’ vrugskil aansienlik meer fotoinhibisie ervaar het by lae temperatuur (16 ºC) in vergelyking met matige (24 ºC en 32 ºC) en hoë (40 ºC) temperatuur onder hoë irradiasie met sigbare lig. Die hersteltempo was temperatuur-afhanklik; dit was die stadigste by lae temperatuur en het toegeneem met ‘n toename in temperatuur. Die foto-apparaat in ‘Cripps’ Pink’ vrugskil blyk besonder sensitief te wees vir ligstres by lae temperatuur regdeur die groeiseisoen met aansienlike fotoinhibisie by selfs matige temperatuur (24 ºC). Die sensitiwiteit van die vrugskil vir fotoinhibisie het toegeneem deur die groeiseisoen by laer ligvlakke, maar het dieselfde gebly by hoër vlakke van irradiasie. Laastens is vrugte blootgestel aan hoë irradiasie by lae en matige temperatuur voordat dit vervolgens blootgestel is aan hoë temperatuur in kombinasie met hoë irradiasie. Dit was om die hipotese te toets dat fotoinhibisie wat opgedoen word gedurende ‘n onverwagte koue periode, die skil meer vatbaar maak vir fototermiese skade sodra die temperatuur weer styg na die koue periode verby is. Ongelukkig het die hoë temperatuur stres al die behandelings tot so ‘n mate geaffekteer dat dit onmoontlik was om enige gevolgtrekkings vanuit ons resultate te maak.
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Li, Gang. "Organic Light-Emitting Devices (OLEDS) and Their Optically Detected Magnetic Resonance (ODMR)." Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Science ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2003. http://www.osti.gov/servlets/purl/822052-lwZpPL/native/.
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Thesis (Ph.D.); Submitted to Iowa State Univ., Ames, IA (US); 12 Dec 2003.Published through the Information Bridge: DOE Scientific and Technical Information. "IS-T 2100" Gang Li. 12/12/2003. Report is also available in paper and microfiche from NTIS.
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SUNDARAM, VIJAYAKUMAR. "OPERATION AND DESIGN IMPACTS ON EFFICIENCY AND TOXICITY DURING ELECTROCHEMICAL TREATMENT OF AZO DYE-CONTAINING WASTEWATER." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1132238031.
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Hjern, Gunnar. "The modernization of a DOS-basedtime critical solar cell LBICmeasurement system." Thesis, Karlstads universitet, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-74322.
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LBIC is a technique for scanning the local quantum efficiency of solar cells. This kind of measurements needs a highly specialized, and time critical controlling software. In 1996 the client, professor Markus Rinio, constructed an LBIC system, and wrote the controlling software as a Turbo-Pascal 7.0 application, running under the MS-DOS 6.22 operating system. By now (2018) both the software and several hardware components are in dire need to be modernized. This thesis thoroughly describes several important aspects of this work, and the considerations needed for a successful result. This includes both very foundational choices about the software architecture, the choice of suitable operating system, the threading model, and the adaptation to new hardware with vastly different behavior. The project also included a new hardware module for position reports and instrument triggering, as well as several adaptations to transform the DOS-based LBIC software into a pleasant modern GUI application.
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Rönnqvist, Patrik. "Surveillance Applications : Image Recognition on the Internet of Things." Thesis, Mittuniversitetet, Institutionen för informationsteknologi och medier, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-18557.
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This is a B.Sc. thesis within the Computer Science programme at the Mid Sweden University. The purpose of this project has been to investigate the possibility of using image based surveillance in smart applications on the Internet-of-Things. The goals involved investigating relevant technologies and designing, implementing and evaluating an application that can perform image recognition. A number of image recognition techniques have been investigated and the use of color histograms has been chosen for its simplicity and low resource requirement. The main source of study material has been the Internet. The solution has been developed in the Java programming language, for use on the Android operating system and using the MediaSense platform for communication. It consists of a camera application that produces image data and a monitor application that performs image recognition and handles user interaction. To evaluate the solution a number of tests have been performed and its pros and cons have been identified. The results show that the solution can differentiate between simple colored stick figures in a controlled environment. Variables such as lighting and the background are significant. The application can reliably send images from the camera to the monitor at a rate of one image every four seconds. The possibility of using streaming video instead of images has been investigated but found to be difficult under the given circumstances. It has been concluded that while the solution cannot differentiate between actual people it has shown that image based surveillance is possible on the IoT and the goals of this project have been satisfied. The results were expected and hold little newsworthiness. Suggested future work involves improvements to the MediaSense platform and infrastructure for processing and storing data.MediaSense
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Jang, Yong-Kyu. "ADVANCED UNDERSTANDING OF THE OPTICAL PROPERTIES IN PHASE COMPENSATED LIQUID CRYSTAL DEVICES." Kent State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=kent1185484614.
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Nehmé, Yasmine, and Cecilia Karlsson. "Materialval och design av klimatsmart rullgardin." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-13024.
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Syftet med examensarbetet har varit att hitta lämpliga textila material för en klimatsmart rullgardin med flera olika skikt skapad av företaget Climate Curtains, samt att ta fram en väl genomtänkt design som är anpassad för miljön den är tänkt att hänga i, nämligen skolor och kontor. Den klimatsmarta rullgardinen ska ha ett absorberande mattsvart material närmast glasfönstret för att fånga upp UV-strålning och därmed bli varmt. Värmen ska sedan föras in i rummet med hjälp av fläktar som sitter monterade inuti gardinstången. En solcellsfilm ska även fästas på skiktet närmast fönstret och har därför tagits med i beräkningarna, dock är solcellsfilmen fortfarande under utveckling. Tanken med solcellsfilmen är först och främst att den ska förse fläktarna med energi men även webbelysning eller laddning av mobil och dator vid överflöd av energi ska vara möjligt. Rullgardinen ska även ha ett vitt reflekterande material in mot rummet för att möjligheten att vända gardinen ska finnas. Under sommartid kan den vända gardinen istället reflektera bort UV-ljus. Mellan dessa två skikt ska ett antal mellanskikt hänga för att erhålla bättre isoleringsegenskaper samtidigt som buller och oljud minskas. Det har även varit relevant att undersöka om flamskyddsmedel bör användas eftersom att gardinen ska hänga i offentliga miljöer. Examensarbetet har bestått av litteraturstudier och praktiska experiment. Experimenten som utfördes var nöthärdighets-, flexibilitets-, reflektionstest samt säkerställning av färg. Materialen som har undersökts har alla varit gjorda av 100% polyester och två alternativa material valdes för vardera skikt. Polyester valdes till alla skikt dels för att det är billigt och dels för att polyester visade sig ha mycket goda egenskaper för de krav som ställdes. Ytterskiktet som är närmast glasfönstret samt innerskiktet in mot rummet valdes till vävar med olika bindningar. Till ytterskiktet jämfördes en tvåskaftsväv med en kypertväv där tvåskaftsväven uppvisade bäst resultat i alla testerna. Kypertväven färgade av sig och nöttes ner i nöthärdighetstestet vilket inte tvåskaftsväven gjorde. Flexibilitets- och reflektionstestet visade goda resultat för båda vävarna. I reflektionstestet pikade tvåskaftsvävens reflektionskurva en aning i det röda spektrat, vilket innebar att den hade en viss röd nyans i sig. Säkerställning av färg gick inte att utföra för de svarta vävarna då svart färg finns i oändligt många olika nyanser. Till det vita innerskiktet jämfördes en tvåskaftsväv med en satinväv. Båda vävarna hade relativt lika resultat i nöthärdighets- samt flexibilitetstestet men satinväven fick bättre resultat i reflektionstestet vilket var avgörande. Vid säkerställning av färg testades den vita färgen i ett ljusskåp i olika ljus för att kontrollera dess vithet. Det visade sig att båda vävarna innehöll optiskt vitmedel vilket även framkom i reflektionstestet då de reflekterade över 100 %. Till mellanskikten jämfördes två olika nonwovenmaterial som består av ihåliga polyesterfibrer. Ihåliga fibrer ha bra ljudabsorption vilket kan vara bra i miljöer såsom skolor och kontor där det kan vara mycket buller och höga ljudnivåer. Det ena materialet vägde 100g/m2 och det andra 250g/m2. Ett nöthärdighets- och flexibilitetstest utfördes på dessa nonwovenmaterial. De båda fick godkänt resultat i flexibilitetstestet men nonwoven 100 höll inte måttet i nöthärdighetstestet varav nonwoven 250 är mest lämpat för rullgardinen. Litteraturstudiens resultat tyder på att det inte finns några krav på flamskyddsmedel i gardiner i offentlig miljö utan endast rekommendationer. Det är alltså upp till företag att bestämma om de vill flamskydda gardinerna. De finns en mängd olika flamskyddsmedelsvarianter men de har alla en sak gemensamt och det är att de är fettlösliga och långlivade, vilket gör att de är svåra att bryta ned. Gardinen designades i en stilren och klassisk design. En kornisch utformades dels för att dölja gardinstången och dels för att erhålla ett snyggare helhetsintryck. Gardinen kommer att ha en fåll längst ned på det yttre och det inre skiktet. Inuti fållen kommer en plastskena läggas för att få tyngd i materialet och därmed ett bättre fall. Fållen ger även gardinen en lyxigare känsla. Resterande kanter på alla materialen för alla skikt valdes att lasras. Med laserskärning erhålls fina kanter som inte fransar sig alls och laserskärning garanterar även att det inte blir någon nötning på produkten under skärningen vilket är fördelaktigt på en rullgardin då den rullas upp och ner mycket. Skisser ritades upp i Kaledo Style för att få en tydligare bild av hur rullgardinen kan komma att se ut. Eventuella tillval, mönster på det vita skiktet samt solceller i olika storlekar, kan även göras på gardinen beroende på kundens önskemål. För att kunna applicera mönstret på det textila materialet undersöktes tre alternativa tryckmönstermetoder; rollerprinting, roterande screentryck samt digital inktryck. De två sistnämnda lämpar sig bäst för ändamålet.The aim of the thesis was to find the optimal textile materials for a climate-smart blind with multiple layers created by the company Climate Curtains. The aim was also to develop a well thought out design that is adapted to the environments it is supposed to hang in, which are schools and offices. The climate-smart blind should have an absorbing black matte material closest to the glass window to capture UV radiation and thereby become warm. The heat will then be brought into the room with the help of fans that are mounted inside the curtain rod. A solar cell film should also be attached to the layer closest to the window and have therefore been included in the calculations, however, the solar film is still under development. The idea of a solar cell film is first and foremost that it will provide fans with energy but also charging of mobile and computer at the abundance of energy. The blind must also have a white reflective material into the room for the possibility of turning the curtain in the summer. This leads to a reflection of the UV light instead of absorption. Between these two layers, a number of intermediate layers will hang to provide isolation of air and noise reduction. The amount of flame retardants have also been relevant to examine because the curtain will hang in public places. There are no requirements in public places when it comes to flame retardants, but there are recommendations published. A solar cell film should also be attached to the layer closest to the window and have therefore been included in the calculations. However, the solar film is still under development. The work has consisted of literature studies, laboratory work and compilation of discussion and results. The laboratory work included abrasion resistance-, flexibility-, reflection test and a test to secure the colors. The materials studied have all been made of 100% polyester and two alternative materials were chosen for each layer. Polyester was chosen to all layers partly because it is cheap and secondly because polyester was found to have very good qualities for the demands made. The outer layer closest to the window and the inner layer into the room consists of fabrics made of weaves with different constructions. For the outer layer a plain weave and a twill weave were chosen to be compared against each other. The plain weave got the best results in all of the tests. For the inner layer a satin weave and a plain weave were compared, and the satin weave got the best results in all the tests. Furthermore, the layers in between the weave textiles are made of hollow polyester fibers as a nonwoven material. Hollow fibers have good sound absorption, which can be useful in environments such as schools and offices where there may be much noise and high sound levels. One material weighing 100 g/m2 and the other 250 g/m2. An abrasion resistance- and flexibility test was conducted on these nonwoven materials. They both got approved results in the flexibility test. However, nonwoven 100 was not good enough in the abrasion resistance test and therefor nonwoven 250 is the most suitable middle layer for the blind. The curtain was designed in a stylish and classic design. A cornice designed partly to hide the curtain rod and partly to obtain a more attractive overall impression. The blind will have a hem at the bottom of the outer and the inner layer. Inside the hem a plastic splint is added to give better stability. The hem also gives the curtain a luxurious feel. The remaining edges on all materials for all layers were chosen to be lasered. With laser cutting fine edges are obtained.4Sketches were drawn up in Kaledo Style to get a clearer picture of how the blind could look like. Any optional patterns on the white layer and the solar cells of different sizes, can also be made on the curtain, depending on customer requirements. In order to apply the pattern to the textile material three alternative methods was studied; roller printing, rotary screen printing and digital ink print. Screenprinting and digital printing was best suited for the purpose.
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Duque-Chica, Gloria Liliana. "Estudo da resposta da melanopsina na neuropatia óptica e no distúrbio de sono através do reflexo pupilar à luz." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/47/47135/tde-22022016-151326/.
Full textAbstract:
Dentre as células ganglionares da retina existe uma pequena população de células que contem melanopsina e respondem diretamente à luz. Estas são as células ganglionares intrinsecamente fotossensíveis (ipRGCs), cujas funções são principalmente não visuais. Dentre as funções não visuais das ipRGCs sua influência na resposta pupilar dependente da luz foi o objeto central desta tese. Tanto a retina interna, através das ipRGCs, quanto a retina externa, através dos bastonetes e cones, fornecem uma informação neural que regula a resposta pupilar à luz (RPL). Este estudo avaliou a integridade das ipRGCs através do RPL em pacientes com glaucoma primário de ângulo aberto (GPAA), leve, moderado e avançado, e em pacientes com síndrome da apnéia obstrutiva do sono (SAOS), moderada e grave. Também foi avaliada a discriminação cromática e a sensibilidade ao contraste espacial de luminância (SC), a perimetria visual e a espessura da retina avaliada por tomografia de coerência óptica (OCT). Foram avaliados 98 participantes: 45 pacientes com GPAA ( 27, 18; idade média = 65,84 + 10,20), 28 pacientes com SAOS ( 14, 14; idade média = 52,93 + 7,13), e 25 controles ( 17, 8; idade média = 54,27 + 8,88). Após o exame oftalmológico foram avaliadas a SC de grades e a discriminação de cores através do Cambridge Colour Test (CCT). A avaliação do RPL foi feita apresentando-se flashes de 470 e 640 nm, de 1s de duração, em 7 luminâncias desde -3 até 2.4 log cd/m2 em um Ganzfeld Q450 SC (Roland Consult). O RPL foi registrado pelo sistema de eye tracker View Point System (Arrington Research Inc.). Os testes foram realizados em ambos os olhos, de forma monocular e no escuro. Para a comparação dos dados entre os grupos, utilizou-se um modelo de equações de estimação generalizada (GEE), para correção da dependência entre os dois olhos. O RPL dos pacientes com GPAA moderado e avançado apresentou redução significativa na amplitude do pico, dependente da severidade do glaucoma, nas diferentes luminâncias tanto para 470 nm quanto para 640 nm, evidenciando redução das contribuições dos cones e bastonetes ao RPL. As contribuições das ipRGCs ao RPL (avaliadas pela amplitude da resposta sustentada entre 6-8 s) foram também significativamente menores em GPAA moderado e avançado. No estado inicial do GPAA as contribuições das ipRGCs para o RPL encontram-se preservadas. No entanto, o GPAA parece afetar o processamento espacial desde o inicio da doença. Nos pacientes com GPAA leve foi observada uma perda acentuada nas faixas baixas de frequência espacial, compatível com prejuízo seletivo das células ganglionares do tipo M. A SC de pacientes com GPAA moderado e avançado mostrou perdas nas faixas baixas e altas de frequência espacial, apontando um prejuízo nas vias parvo- e margnocelulares. Uma perda significativa da discriminação de cores no eixo azul-amarelo foi observada em todos os estágios do GPAA. O RPL nos pacientes com SAOS está parcialmente preservado, não obstante, as respostas da amplitude do pico para o flash de 470 nm diminuem conforme aumenta a severidade da SAOS. As contribuições dos fotorreceptores da retina externa ao RPL, foram significativamente menores em algumas das luminâncias. Não foram observadas diferenças significativas de SC ou discriminação de cores nos pacientes com SAOS. Em conclusão, no estágio moderado e avançado do glaucoma tanto as contribuições das ipRGCs ao RPL quanto as vias M e P, se encontram mais afetadas do que no inicio do GPAA, quando a via parvocelular e as contribuições das ipRGCs ao RPL parecem estar mais preservadasAmong the retina ganglion cells there are a small population of cells containing melanopsin and which respond directly to light. They are the intrinsically photosensitive ganglion cells (ipRGCs), whose functions are mainly non-visual. Among these non-visual functions of the ipRGCs, their influence on the pupillary response as a function of light was the central subject of this thesis. Both the inner retina through the ipRGCs and the outer retina through the rods and cones, provide neural information that regulates the pupillary light response (PLR) to light. This study evaluated the integrity of ipRGCs through PLR in patients with Primary Open Angle Glaucoma (POAG), mild, moderate and advanced, and in patients with Obstructive Sleep Apnea Syndrome (OSAS), moderate and severe. We evaluated also the color discrimination and achromatic spatial contrast sensitivity (CS), visual perimetry and retinal thickness evaluated by Optical Coherence Tomography (OCT). 98 participants were evaluated, 45 patients with POAG ( 27 18; mean age = 65.84 + 10.20), 28 with OSAS ( 14 14; mean age = 52.93 + 7.13) and 25 controls ( 17 8; mean age = 54.27 + 8.88). After the ophthalmological exam it was evaluated the contrast sensitivity and color discrimination measures using the Cambridge Colour Test (CCT). Pupil responses were elicited by Ganzfeld (Q450 SC, Roland Consult) presentation of 1-sec flashes of 470- and 640-nm at 7 luminance from -3 to 2.4 log cd/m2. PLR was measured with the eye tracker system View Point (Arrington Research Inc.). The tests were performed monocularly, on both eyes, in a darkened room. In order to compare data across groups, we used a General Estimating Equations (GEE) to adjust for within subject inter-eye correlations. Patients with moderate and advanced POAG had a significantly decreased PLR that depends on the severity of the glaucoma, for both the 470- and 640-nm stimuli, making evident the reduction of the contributions of the cones and rods to the PLR. The contributions of ipRGCs to PLR (assessed by the amplitude of the sustained response between 6 8 sec) were also significantly lower in patients with moderate and advanced POAG. In the initial and mild stages of POAG the contribution of ipRGCs to the PLR is preserved. However, POAG appears to affect spatial processing from the early stages of the disease. Mild-POAG patients showed a marked loss in the low spatial frequency bands, compatible with selective loss of magnocellular ganglion cells. The CS of patients with moderate and advanced POAG showed losses at both low and high spatial frequencies, suggesting a loss in both parvo- and margnocellular channels. A significant loss of color discrimination along the blue-yellow axis was observed in all stages of POAG. The PLR in patients with OSAS is partially preserved, however the peak amplitude responses for the 470-nm flash decreased with increased severity of OSAS. The contributions of the photoreceptors of the outer retina to the PLR were significantly lower at some of the luminance. Significant differences in CS or color discrimination were not observed in patients with OSAS. In conclusion, in moderate and advanced stages of glaucoma, both the contributions of ipRGCs to PLR as well as the M- and P channels, were found more affected than at the beginning of POAG, in contrast the parvocellular channel and the contributions of ipRGCs on the PLR would be more preserved
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Garuz, Richard. "Caractérisations optiques (LBIC, LBIV) et validation d’encres pour des cellules et des modules solaires photovoltaïques organiques." Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0059/document.
Full textAbstract:
Les travaux de cette thèse sont en rapport avec la caractérisation de cellules solaires organiques et se déclinent suivant 3 axes :- Dans le cadre du projet IMPCELPHOTOR, nous avons développé un banc de caractérisation LBIC/LBIV permettant de cartographier des dispositifs OPV afin de visualiser et d’identifier les défauts de fonctionnement.- Dans le cadre du projet Européen SPrinTronics, nous avons travaillé sur l’amélioration des électrodes. Pour l’électrode collectrice d’électrons, nous avons sélectionné, testé et validé des encres métalliques à base de nanoparticules d’argent compatibles avec l’impression jet d’encre et permettant de réaliser des dispositifs OPV fonctionnels. Pour l’électrode collectrice de trous, nous avons testé des encres à base de nanofils d’argent et de nanotubes de carbone afin de remplacer l’ITO. Des résultats satisfaisants ont été obtenus avec une encre à base de nanofils d’argent. Cette dernière permet de réaliser des cellules semi-transparentes fonctionnelles sur verre et sur plastique. - Un travail sur l’aspect couleur d’un dispositif OPV a été mené au sein du projet PHASME. Nous avons mis en œuvre différentes techniques afin de modifier la couleur d’un dispositif OPV sans détruire ses performances photovoltaïques, le but étant de réaliser des modules polychromes. Nous avons développé simultanément un logiciel de colorimétrie permettant de contrôler et de prévoir le rendu de couleur dû à l’ajout de filtre coloré sur le dispositif OPVThe work of this thesis is related to the characterization of organic solar cells and is structured in three independant parts :- Within the IMPCELPHOTOR project, we developed an experimental bench based on LBIC/ LBIV mapping, in order to visualize and identify defects within OPV device and modules.- Within the European SPrinTronics project, we worked on the improvement of OPV electrodes. For the top electrode, we selected, tested, and validated metallic inks based on silver nanoparticles compatible with inkjet printing. For the bottom electrode, we tested silver nanowires and carbon nanotubes inks to replace ITO. Satisfactory results have been obtained with an ink based on silver nanowires, which allowed us to obtain functional semi-transparent cells on glass and plastic.- Within the PHASME project, we worked on the visual aspect of a coloured OPV device. We implemented various strategies to change the color of an OPV device without altering its photovoltaic performance, the aim being to achieve full color modules. Simultaneously, we developed a colorimetric software to control and predict the color rendering on the final device (OPV plus filter)
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Iborra, Bernad María del Consuelo. "Comparison of vacuum treatments and traditional cooking in vegetables using instrumental and sensory analysis." Doctoral thesis, Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/32953.
Full textAbstract:
Los objetivos de la presente tesis fueron comparar el efecto de tres técnicas de cocción en
varios vegetales y su selección para cada producto estudiado. Para ello, los trabajos realizados
han considerado los cambios en las propiedades físico-químicas, nutricionales, sensoriales y la
microestructura. Asimismo, como respuesta al reto de aplicar tratamientos equivalentes en
firmeza con diferentes técnicas de cocción se ha propuesto una metodología que combina los
diseños experimentales de superficie respuesta (RSM) con análisis instrumentales y
sensoriales.
Los tratamientos térmicos estudiados fueron la cocción tradicional (TC¿ agua hirviendo a 100
°C) junto con dos tratamientos que utilizan el vacío en el procesado: el cook-vide (CV¿ cocción
a vacío continuo donde los alimentos están en contacto con agua hirviendo a baja presión) y el
sous-vide (SV¿ cocción de alimentos previamente embolsados a vacío donde el alimento está
separado del agua de cocción). Los vegetales objeto de estudio fueron la patata morada
(Solanum tuberosum L. var. Vitelotte), la judía verde (Phaseolus vulgaris L. cv. Estefania), la
zanahoria (Daucus carota L. cv. Nantesa) y la col lombarda (o repollo colorado) (Brassica
oleracea convar. capitata var. capitata f. rubra).
Considerando muestras con firmeza instrumental similar y las propiedades nutricionales y
sensoriales (especialmente aroma y sabor), incluyendo la aceptación del consumidor, se
recomienda la cocción SV para los vegetales estudiados, excepto para la zanahoria. En el caso
de este vegetal el cocinado tradicional (100 °C) mantiene la aceptabilidad del consumidor y
aumenta la extracción de los ß-carotenos por lo que se considera más recomendable que el
SV.Iborra Bernad, MDC. (2013). Comparison of vacuum treatments and traditional cooking in vegetables using instrumental and sensory analysis [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/32953
TESIS
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Eliscovich, Carolina. "Spindle-Localized CPE-Mediated Translation Controls Mediotic Chromosome Segregation." Doctoral thesis, Universitat Pompeu Fabra, 2008. http://hdl.handle.net/10803/7123.
Full textAbstract:
La progresión meiótica y el desarrollo embrionario temprano están programados, en parte, por la activación tradcuccional de mRNAs maternos como lo son los que codifican para las proteinas de ciclina B1 o mos. Estos mRNAs no son traducidos al mismo tiempo ni en el mismo lugar. Por lo contrario, su traducción está especificamente regulada por elementos de poliadenilación citoplasmática (CPEs) presentes en sus 3'UTRs. Los elementos CPEs reclutan a la proteina de unión a CPE (CPE-binding protein CPEB (Colegrove-Otero et al., 2005; de Moor et al., 2005; Mendez and Richter, 2001; Richter, 2007)). Esta proteina de unión al RNA no sólo determina cuándo y en qué medida un mRNA será activado traduccionalmente por poliadenilación citoplasmática (Mendez et al., 2000a; Mendez et al., 2000b; Mendez et al., 2002) sino que también participa, junto con el represor de la traducción Maskin, en el transporte y la localización de sus mRNAs diana hacia los sitios de localización subcelular donde su traducción ocurrirá (Huang et al., 2003; Huang and Richter, 2004). Durante el desarrollo embrionario de Xenopus, CPEB se encuentra localizada en el polo animal de los oocitos y más tarde, sobre el huso mitótico y centrosomas en el embrión (Groisman et al., 2000). Se ha demostrado que embriones de Xenopus inyectados con agentes que interrumpen la traducción dependiente de poliadenilación citoplasmática, detienen la división celular y presentan estructuras mitóticas anormales (Groisman et al., 2000). En este trabajo que derivó en mi tesis doctoral, hemos demostrado que la activación traduccional localizada en el huso mitótico de mRNAs regulados por CPEB que codifican para proteinas con una conocida función en aspectos estructurales del ciclo celular como la formación del huso mitótico y la segregación cromosómica, es esencial para completar la primera división meiótica y para la correcta segregación cromosómica en oocitos de Xenopus.
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Sarkar, Samir Kumar. "Triarylborane-BODIPY Conjugates : White Light Emission, Multi-color Cell Imaging and Small Molecule Based Solar Cells." Thesis, 2017. http://etd.iisc.ernet.in/2005/3702.
Full textAbstract:
Luminescent boron containing materials find numerous applications in modern technologies such as display/lighting, bio-imaging and sensing. Thus, investigations of structure-property relationships in organic luminescent compounds to understand their molecular and bulk properties are of fundamental importance. The main thrust of this thesis is the development of facile synthetic routes for boron containing novel polyads and study their structure-property correlations and to utilize this information to design functional materials with desired properties such as multiple emission, bio imaging, anion sensing and organic photo voltaic characteristics. This thesis contains seven chapters and the contents of each chapter are described below.
Chapter 1
This chapter is a concise overview of the recent developments in the chemistry of boron based molecular systems such as triarylborane and BODIPYs. This chapter also highlights the basic nature of broad emissive materials. In addition, an advance in the frontier areas such as bio imaging is discussed in brief.
Chapter 2
This chapter describes the structure and optical properties of a new triad (Borane-Bithiophene-BODIPY) 1. Triad 1 exhibits unprecedented tricolour emission when excited at borane centred high energy absorption band and also acts as a selective fluorescent and colorimetric sensor for fluoride ion with ratiometric response. The experimental results are supported by computational studies.
Chapter 3
Two fluorescent compounds with similar absorption profiles and complementarily emissive properties can be regarded as the ideal couple for the generation of white-light. Two structurally close and complementarily fluorescent boron based molecular siblings 2 and 3 were prepared. The luminescence properties of individual triads were modulated to an extent to complement each other by controlling the intramolecular energy transfer in triads by fine-tuning the dihedral angle between fluorophores in 2 and 3. A binary mixture of 2 and 3 emitted white-light.
Chapter 4
This chapter deals with a straight forward strategy for the generation of white-light emission in aqueous media. Using a blue-emissive AIE-active (aggregation-induced emission) 1, 8-naphthalimide- based sensitizer and a boron-dipyrromethene based red emitter as a dopant, water dispersible nanostructures with tunable emission features are produced. The white-light emissive (WL) nano-aggregates are stable at neutral pH and have been elegantly utilized for four-colour cell imaging (including near- infrared imaging). Chapter 5
This chapter describes the design and development of a NIR emitting triarylborane decorated styryl-BODIPY (4) via a facile synthetic route. Incorporation of TAB entities results in a significantly red shifted broad emission in 4 (compared to compound M3 which is devoid of TAB unit). The near coplanar orientation of Ar3B planes and BODIPY core results in a highly efficient (TAB to BODIPY) EET process in 4. Conjugate 4 acts as a highly selective and sensitive fluoride sensor with naked eye visual response as well as ratiometric fluorescent response. The dual emission in fluoride bound 4 possibly results from the restricted partial TAB to BODIPY energy transfer.
Chapter 6
This chapter describes how the energy of transitions of the broad emissive molecular triads can be fine-tuned by judiciously changing the spacer oligothiophene length. A series of triarylborane and BODIPY conjugates (TAB-π-BODIPY) has been designed, and synthesized by a combined strategy of changing the connection mode between the two units, extending the conjugation size by introducing terthiophene, quaterthiophene, and pentathiophene units. The electrochemical and photophysical behavior of these conjugates were investigated. The experimental findings were rationalized by density functional theory calculations.
Chapter 7
This chapter describes design and development of boron based novel electron acceptor BDY for the bulk-heterojunction solar cell. The electron mobility values of BDY was found to be of the order of standard PCBM. Bulk-heterojunction was fabricated using BDY as the electron acceptor layer. The power conversion efficiency of the newly developed solar cells with BDY as electron acceptor is much higher than the value obtained for standard cells with PCBM as the electron acceptor.
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Wang, Cheng-Ming, and 王晟名. "Color Tuning of Light-Emitting Electrochemical Cells by Employing CsPbX3 Perovskite Color Conversion Layers." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/564xu4.
Full textAbstract:
碩士國立交通大學
照明與能源光電研究所
106
Recently, light-emitting electrochemical cells (LECs) have attracted intense attention due to solution processablility, simple device architecture and allow using air stable metals. Ionic transition metal complexes (iTMCs) can provide significantly higher device efficiencies when using in emissive layers of LECs. However, iTMCs show relative broader electroluminescence (EL) spectrum (full width at half maximum (FWHM) > 50 nm), leading to color saturation problem. Using lead halide perovskite materials, which have highly color saturation (FWHM <50 nm) can provide saturated EL. In this study, green, yellow, red and deep red color conversion layers (CCLs) based on CsPbX3 perovskites are combined with LECs based on a blue-emitting iTMC to achieve saturated EL spectrum. In addition, CCLs containing these four CsPbX3 perovskites mixed in proper ratios can be integrated with blue iTMC-LECs to obtain a white spectrum with a high color rendering index (CRI) > 90. Different colors of perovskite materials can be mixed without mutual interaction. Such CRI of white EL is among the highest reported values for white LECs. This technique is thus useful for both display and lighting applications.
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Li, Jui-Pin, and 李瑞彬. "Color Quantization with Fuzzy C-Means for Cells Counting." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/48788214320203672999.
Full textAbstract:
碩士國立暨南國際大學
電機工程學系
104
The demand for biological testing becomes more and more important as humans pay more attention to their health. Conventional manual cell counting process in biological testing is laborious and rather time consuming. Besides, the accuracy of counting results relies on the ability of professional operators. The physical and psychological conditions of the operators often affect the accuracy of the observation results. Accordingly, we propose in this thesis an automated counting tool with a fast and accurate way to solve the uncertainty under the microscope observation, and hence to reduce the possible human errors. This thesis uses color quantization algorithms and fast connected-component labeling (FCCL) for counting cell, rather than the familiar methods using edge detections and noise removal algorithms. By tuning the condition of color quantization for cell counting method according to the cell image properties, we can achieve the counting accuracy rate of 95%, and efficiently reduce the labor cost and the error rate caused by human.
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Chiu, Yu-Ming, and 邱玉銘. "Research on the color uniformity for the solar cells." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/71227493845742283219.
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碩士國立交通大學
工學院半導體材料與製程設備學程
101
The research aims to study the fabrication of antireflection thin films for poly-crystalline silicon solar cells. The antireflection SiNx thin films have already treated as the turnkey process for silicon solar cells. Plasma-enhanced chemical vapor deposition (PECVD) technique on SiNx films is widely used in PV industry. Actually, the solar cells exhibit different colors in the thin films, which have led to unexpected and uncoordinated exterior. The causes of these variances in the films deposition colors, through this research, have been found to be the incongruity in thickness of the antireflection films. Otherwise, such disproportionate thicknesses have caused possible distortion in the contact formation and the formation of silicon alloy at its interfaces. Such disproportionate of antireflection thin films will impact metal penetration rate and silicon alloy in the interface. Hence, the arising of series and parallel resistance in the PV transforming performance deteriorates the cell efficiency. In this thesis, various deposition parameters are performed by turning the process parameters (pressure, gas flows, MW plasma power, gas flow ratio and substrate temperature) of PECVD. We find that (1) the gas flow and the reaction pressure variations can significantly affect the growth rate; (2) the reaction of the RF variability was also significantly increase the film deposition rate, but it led to a loose structure; (3) gas flow ratio determines the reflective index; (4) the reaction temperature affect the activity of substrate surface atoms, and enhance film densification. In addition, the new carrier design can achieve improvement in layer uniformity and a slight color difference. This approach maintains refraction index and optoelectronic transforming performance.
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Wu, Hung-Bau, and 伍弘寶. "Efficient and Color-Stable Solid-State White Light-Emitting Electrochemical Cells Employing Red Color Conversion Layers." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/26549010361874107244.
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碩士國立交通大學
照明與能源光電研究所
100
We report efficient and color-stable white light-emitting electrochemical cells (LECs) by combining single-layered blue-emitting LECs with red-emitting color conversion layers (CCLs) on the inverse side of the glass substrate. By judicious choosing of the red-emitting dye doped in CCLs, good spectral overlap between the absorption spectrum of the red-emitting dye and the emission spectrum of the blue-emitting emissive material results in efficient energy transfer and thus sufficient down-converted red emission at low doping concentrations of the red-emitting dye in the CCLs. Low doping concentration is beneficial in reducing self-quenching of the red-emitting dye, rendering efficient red emission. Electroluminescent (EL) measurements show that the peak external quantum efficiency and the peak power efficiency of the white LECs employing red CCLs reach 5.93% and 15.34 lm W-1, respectively, which are among the highest reported for white LECs. Furthermore, these devices exhibit almost bias-independent white EL spectra, which are required for practical applications, due to nondoped emissive layers. These results reveal that single-layered blue-emitting LECs combined with red-emitting CCLs are one of the potential candidates for efficient and color-stable white light-emitting devices.
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CHEN, MENG-WEI, and 陳孟煒. "Color Encapsulation and Array Efficiency Study of Silicon Solar Cells." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/8kjfr5.
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碩士明志科技大學
材料工程系碩士班
107
In this study, the study of the efficiency of color packaging and array of solar cells is the main research axis. designing anti-reflective glass and high-transparent colored glass for the encapsulation of Si solar cells. Array efficiency study we explore the effect of solar arrays on power generation efficiency when shaded. Human perception of color relies on the reflection or transmission of light,therefore, we want to see the color from a solar cell. We will lose some efficiency, it is the subject of this research to give bright colors to solar panels while reducing the loss of power generation efficiency. We use thin-film optics to produce anti-reflective glass with an average transmittance of about 94% at 400-1100 nm and high-transparent colored glass with different color purity. After Used anti-reflective encapsulation that the average reflectance of anti-reflection package is less than un-package, the un-package solar cell with a reflectance of 3.97% after encapsulation the reflectance was reduced to 3.52% and the power conversion efficiency is increased from 17.20% to 17.76% Using high-transparent colored glass for solar cell packaging, based on power conversion efficiency and color purity, the power conversion efficiency is between 17.04 and 17.48%, compared with the general package of 17.47%, with bright reflection color and without losing power conversion efficiency. If high-transmission color totem glass is used, it not only has high power conversion efficiency, but also makes the solar panel aesthetic and more unique and can be applied to the anti-counterfeit label of solar panels. Commercially available solar panels are made up of several solar cells connected in series circuits. Assuming that one of the solar cells is completely shaded, the output current of the solar panel will be seriously degraded, resulting in a significant reduction in overall power conversion efficiency.Therefore, this study proposes an array mode in which solar cells are distributed parallel circuits plus series circuits , which reduces the probability of the solar cells being shaded at the same time, and improves the power conversion efficiency loss when the solar cell module is shaded. We also use the parallel equivalent circuit model, series short-circuit current and fill factor change trend line to theoretically calculate the power conversion efficiency of the array module, and conduct experimental and theoretical discussions with anti-reflective packaged solar cell arrays.
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Wu, Wen-Kuang, and 吳玟光. "Tuning color temperature of white light-emitting electrochemical cells by laser-scanned perovskite-nanocrystal color conversion layers." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/3y546r.
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碩士國立交通大學
光電系統研究所
106
Development of white light-emitting electrochemical cells (LECs) has attracted great attention in consideration of their advantages. Recently, perovskite materials have also shown many outstanding optoelectronic properties of light absorption and emission, and hence are suitable for serving the color conversion layers (CCLs) of the solid-state white light emitting diodes (LEDs). Here, we fabricated the white LECs by integrating the non-doped blue-green LECs with the CCLs made by single composition of perovskite nanocrystal (NCs). Moreover, we proposed and demonstrated that the correlated color temperatures (CCTs) of the white LECs can be tuned through laser scan. The CCTs of the white LECs can be tuned from 2168 K to 7230 K. This method is much different from the conventional CCLs of using multiple compositions of perovskite NCs in CCLs to produce white light, so that it can avoid the inherent anion-exchange issue of perovskite NCs.
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Kuo, Jung-Chin, and 郭榮欽. "White Light-Emitting Electrochemical Cells Employing Embedded Red Color Conversion Layers." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/24491093917221101310.
Full textAbstract:
碩士國立交通大學
光電科技學程
102
Highly efficient white light-emitting electro chemical cells (LECs) are realized by employing an embedded red color conversion (CCL) between the blue-emitting emissive layer and the substrate. White emission is composed of the blue electroluminescence (EL) and the red photoluminescence (PL) resulted from absorption of the blue EL in the CCL and subsequent energy transfer. The efficient red-emitting dye is properly chosen to exhibit significant spectrum overlap band of the blue EL. Low doping concentration of the red dye in the CCL is beneficial in reducing self-quenching effect, enhancing device efficiencies. Compared to previously the proposed embedded CCL structure can make use of blue EL in the wave-guiding mode. Thus, the device efficiency of white LECs can be significantly improved the peak external quantum efficiency and power efficiency achieved in the white LECs with and embedded CCL are as high as 12.5 % and 26 lm/W, respectively. These efficiencies are among the highest reported in white LECs.
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WANG, Hao-chien, and 王浩鑑. "A novel color machine vision system development for color classification and AR film thicknesss measurment of silicon crystalline solar cells." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/04753233971247950993.
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碩士聖約翰科技大學
電子工程系碩士班
98
For increasing marketing competence, silicon crystalline solar cell manufacturers are forced to adopt computer vision inspection techniques in production lines to perform product classification and statistical process control (SPC). The product classification is based on the overall photoelectric conversion efficiency of the solar cell itself. Two factors directly influence the overall photoelectric conversion efficiency of the solar cell, i.e., the composed materials and the anti-reflection (AR) film coating on substrate. Since the thickness variation of anti-reflection thin film will induce the color change on the surface of solar cell, this study develops a cost-effective color computer vision inspection system to perform fast color classification and AR film thickness measurement of silicon crystalline solar cells. The proposed system first uses color charge coupled device (CCD) to capture the red-green-blue (RGB) color image of inspected silicon crystalline solar cell, and transforms it to hue-saturation-lightness (HSL) image format. And then the area and boundary of different hue-value images are calculated and sorted with the image thresholding and label operation. Besides, with the corresponding measurement procedure on specified hue-value regions of using a precise height measurement instrument, such as the wavelength scanning profiler, the regression equation between the hue value and AR film thickness is obtained, and then implemented into the color vision system to perform large area scanning AR film height measurement of silicon crystalline solar cells. Compared to the optical ellipsometry, the measurement speed of the proposed system is fast. It can take only 0.1 seconds or so to finish the height measurement of a 12.5cm×12.5cm solar-cell image, and the measurement accuracy can reach 30Å.
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Chen, Helen W., and 陳宛秀. "Mimicking color vision using photoreceptors constructed with anthocyanin-based dye-sensitized solar cells." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/13676609311087460646.
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碩士國立清華大學
生物資訊與結構生物研究所
102
A system consisting of three dye-sensitized solar cells (DSSCs), each tailored with a light absorption maximum in short, medium or long wavelengths was developed for color sensing purposes using anthocyanins from red cabbages. Anthocyanins absorb light in the UV-Vis region and have pH-dependant light absorptivity profiles that were easily adjusted to suit this purpose. The system is constructed with inspiration from the three specialized photoreceptors in the human visual system, and quantum efficiency (QE) values of the system are analyzed in ways that mimic the data-processing methods of human vision, which are explained by both the trichromatic and opponent-process color theory. A successful method of using the quantum efficiency (QE) of the tri-DSSC system to interpret the color of the incident light (wavelength) was thus proposed. When six monochromatic incident light sources were used to characterize the response of the tri-DSSC system, the opponent color theory-based analysis method, which compares the sum and differences of the tri-DSSC QE values, returned more accurate color results by providing highly distinguishable values for each wavelength while the method of using QE ratio comparison alone returned more ambiguous results in multiple wavelength ranges. To use the tri-DSSC system to identify colors at different irradiances, corrections must be made to QE values assuming a linear relationship between QE and irradiance, or new QE values need to be measured directly. In conclusion, the tri-DSSC system has proven its potential in recognizing colors at a uniform incident irradiance level and the possibility to improve its color sensing functions are promising as multiple strategies to improve its future designs are available.
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Lee, Hsiao-Chin, and 李曉菁. "Laser-Scanned Programmable Color Temperature of Electroluminescence from White Light-Emitting Electrochemical Cells." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/7j9w56.
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碩士國立交通大學
影像與生醫光電研究所
105
Recently, the control of correlated color temperature (CCT) of artificial solid-state white-light sources starts to attract more attention since CTs affect human physiology and health profoundly. In this work, we proposed and demonstrated a method that can widely tune the CCTs of electroluminescence (EL) from white-light-emitting electrochemical cells (LECs) by employing plasmonic filters. These integrated on-chip plasmonic filters are composed of semicontinuous thin Ag film or Ag nanoparticles (NPs) both included in the indium tin oxide anode contact, which have different characteristics of plasmonic resonant absorptions that can tune the EL spectra of white LECs. The CCTs of EL from white LECs integrated with semicontinuous thin Ag film and randomly distributed Ag NPs are 5778 and 2350 K, respectively. A commercially available laser scanning system was used to locally thermal anneal the semicontinuous thin Ag film to form the randomly distributed Ag NPs on the scanned areas. Hence, these two kinds of filters can be integrated on the same chip of white LEC, giving more freedom to control the CCTs of white EL and more potential applications. In addition, the laser scanning system used here is quite often used in display manufactures so that our proposed method can be immediately adopted by the light-emitting diode industry.
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Chien, Ta-Wei, and 簡大為. "Visual Perception of Cutaneous T-cell Lymphoma by Color Enhancement." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/03018736421157946257.
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碩士國立中正大學
光機電整合工程研究所
100
Cutaneous T-cell Lymphoma is a rare skin disease. Due to the low probability of its occurrence, non-professional dermatologist clinics could easily be mistaken for psoriasis or atopic dermatitis. Traditional biopsy detection is an invasive process, it not only undermines the organizational structure, and the cost of pathological diagnosis is high and time-consuming. We used multi-spectral imaging technique to get the spectrum of each pixel in the image of these skin diseases, and use of principal component analysis and principal component scores to distinguish between different diseases. Later, we use 4-band LED color difference calculation to find out the best able to gain color LED chromaticity location, its connection with the white spots can be a particular wavelength. By using this wavelength, we designed an enhancing spectrum, and then we can enhance the color difference between normal and lesion area of the CTCL patients more than 10%. It can make medical diagnosis more efficiency and help patients for early treatment.
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Li, Wei-Jen, and 李偉任. "Cancer Cell Identification by Bi-color ZnO and TiO2 Nanowires." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/78549446123477527562.
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碩士國立臺灣大學
光電工程學研究所
102
Among cancer cell detection methods, fluorescence microscopy cancer detection is one of the most common methods. However, there are many disadvantages for fluorescence cancer detection such as the phototoxicity, the limited number of available fluorescent channels, and the overlap of the excitation and emission spectra of the stains. Furthermore, under a constant light illumination, it possesses the issue of photobleaching, making real-time surgery difficult. Many groups have reported that quantum dots can conquer these problems; however, the quantum dots method requires surface modification and the surface state induced by modification changes the property of semiconductor material. Moreover, all the processes cost high. To overcome these issues, the semiconductor light sources are alternative choices. ZnO and TiO2 nanowires connected with specific antibodies are proposed to identify cancer cells and normal cells, replacing the organic fluorescent substances in the traditional cancer detection method. ZnO and TiO2 have exceptional optical properties, and they are often applied to biomedical research and commercial products. In addition, duto to great affinities between both ZnO and TiO2 nanowires and many proteins, ZnO and TiO2 nanowires bounded to specific antibodies are regarded as biomarkers to distinguish cancer cells from normal cells. Furthermore, from PL spectra and bio-images, our idea for cancer cell detection by semiconductor nanowires was confirmed. Then, a series of quantitative analyses, including biomarker concentration limit, the valid range of cell numbers, and co-culture case to simulation the real situation were conducted to examine the relationship between the optical response from biomarkers and cell numbers. The data from quantitative analyses were expected to provide a reference for surgeon for real-time cancer cell detection while performing the surgery. In this thesis, we reported a novel cancer cell detection technology by using ZnO and TiO2 nanowires connected to specific antibodies to distinguish cancer cells from normal cells, leading successful real-time cancer cell detection during cancer resection. Moreover, a series of quantitative experiments will provide physicians with key parameters and thus systemized the real-time cancer cell detection.
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Yu-Shan, Hung. "Intensity-dependence of the color opponent cells in the lobula of honeybee, Apis mellifera." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0005-1807200611264200.
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Fan, Chiang Chien-Ming, and 范姜建名. "Improvement of color saturation of light-emitting electrochemical cells by silver-nanoparticle plasmonic filters." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/5922np.
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碩士國立交通大學
照明與能源光電研究所
105
Solid-state light-emitting electrochemical cells (LECS) have potential for display application due to their several advantages such as simple device structure, solution process and low operation voltage. In this work, we use the localized surface plasmonic resonant (LSPR) of silver nanoparticles (Ag-NPs) to produce more saturated blue, green and red LECs. The LSPR absorption of Ag-NPs depends on the effective refractive index of materials around Ag-NPs. In this work, we fabricated the plasmonic filters with different absorption wavelengths by manipulating the effective refractive index of Ag-NPs’ environment through the control of TiO2 thickness covered the Ag-NPs. Our results show that more saturated blue, green and red LECs can be obtained by combining two of those fabricated filters, which can be applied on display.
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LIN, YI-HUNG, and 林益宏. "Application studies of high-purity-color resonant cavity for transparent solar cells and photodiodes." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7swwr3.
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碩士明志科技大學
材料工程系碩士班
106
The research is based on the resonant cavity of an optical thin film process, the simple Ag/ITO/Ag cavity structure is applied to the OPV (Organic Photovoltaic) electrode so that the OPV retains the original PCE (>8%) and has good clear color transmittance (>15%), both green energy, and humanistic aesthetics. The solar light simulator is used as the light source of the photodiodes, and the self-made filter is used to detect the characteristics in the different wavelength. The filter uses a combination of an ITO-Ag multilayer thin film resonant cavity and resonance penetrating One-dimensional photonic crystal to limit the penetration peak at a half-height width of 10 nm. Apply the high-purity color of this resonant cavity combination filter to achieve accurate color discrimination of the photodiodes. In the detection of the linearity of the light intensity of the photodiodes, the self-made filter, the attenuate filter and the detection system are used to detect the short-circuit current change of the photodiodes when the light intensity changes, and the experimental rationality is theoretically calculated. Finally, compared with the experimental data in the standard measurement environment, it can be found that the self-made detection system and theoretical prediction have the same trend as the detection data in the standard environment.
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Lin, Guan-Rung, and 林冠榕. "Solid-State White Light-Emitting Electrochemical Cells Based on Scattering Red Color Conversion Layers." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/br62c6.
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碩士國立交通大學
照明與能源光電研究所
104
Solid-state white light-emitting electrochemical cells (LECs) based on ionic transition metal complexes are capable of generating efficient white electroluminescence (EL). Recently, blue-emitting LECs combined with embedded red color conversion layers (CCLs), which were inserted between indium tin oxide (ITO) and glass substrate, have been reported to offer external quantum efficiency (EQE) >12%. However, the output spectrum of EL from such white LECs changed with time due to altered microcavity effect when recombination zone was moving. Furthermore, device efficiency should be further improved to realize practical applications. In this work, TiO2 nanoparticles (NPs) of two sizes are incorporated in red CCLs to improve device performance. Large NPs (250 nm) can scatter and redirect the light passing through red CCL and further enhance the extracted light. Small NPs (25 nm) increase the refractive index of red CCL and raise the amount of light intensity in the evanescent tail of waveguide mode near ITO layer. Therefore, more trapped light in the evanescent tail of waveguide mode can be recycled to external mode by scattering. Peak EQE and power efficiency of white LECs employing scattering red CCLs reach 20.0% and 39.5 lm W-1, respectively. Furthermore, with scattering NPs to average EL in different directions, white EL is almost invariant with time. These results show that blue-emitting LECs combined with scattering red CCLs would be effective to provide efficient and stable white EL.
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Chiou, Bo-Ruei, and 邱柏瑞. "Dynamically Tuning the Correlated Color Temperature of White Light-Emitting Electrochemical Cells with Electrochromic Filters." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/xf2bxm.
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碩士國立交通大學
照明與能源光電研究所
105
Recently, white solid-state LECs have attracted intense attention since they exhibit advantages such as low-voltage operation, compatibility with solution processes and employing inert cathode metals. Since different correlated color temperatures (CCTs) of background illumination are necessary for various lighting applications, a real-time tunable CCT of white LECs would be highly desired in modern smart lighting systems. In this work, a widely and dynamically tuning CCT (>10000 K) of white LEC is demonstrated by employing an electrochromic device (ECD) as a real-time controllable color filter. By increasing the applied bias on the ECD to attenuate more the red parts of white EL from the white LEC, the LEC-based white light source becomes more bluish and, in consequence, shows higher CCT. This proposed LEC-based white light source with the characteristics of wide CCT range and real-time tunability is suitable for most lighting applications and modern smart lighting systems.
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姚美玲. "The Main Menu Icon Design on Color Display of Cell Phone." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/99322346994154418797.
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碩士國立交通大學
應用藝術研究所
92
Abstract GUI(Graphic User Interface) is the communication interface between human beings and 3C products, and has been used generally both on software and hardware interface design. It’s the same situation for cell phone. Due to more and more rich function, color display, various dimension of LCM for cell phone, the interface design rules of single display LCM has been not satisfied with customer. The GUI designer has to find out what are the customer used to, the theory of icon design, color scheme, and interface design principles, and then he could get good design concept and icon design. User would not get lost or be discouraged on navigation for cell phone. There is no standard design principle for menu tree, interface and icon design of cell phone. It will cause user’s confusion and disappointment due to incorrect design. Too much elements and skills will make a gap between user and product, especially for color display cell phone. This research will focus on analyzing preference and identification of main menu icon design on color display of cell phone. The purpose is to understand the performance of each icon by the way of collecting different icon design of several kinds of brands, confusion matrix, comprehension, aesthetic, and preference of icon. For the test result, we use One Sample T-test to analyze the data and find out standard icon samples. For those can’t reach the standard, we have to review and redesign. And we have to propose one set of icon design with the same style to provide design principle for icon design on color display of cell phone in the future. We can see the performance is not satisfied for those main menu function with abstract concept, example for 〝call record〞and 〝extra〞functions .On the other way, the performance is better for those with concrete concept, example for 〝phone book〞and 〝camera〞functions .We got some principles for icon on cell phone: 1.The performance and identification will be better if we use concrete concept to design icon. 2.Users prefer icon design with 3D effect or shadow. 3.The color scheme has to be harmonizing and vivid. 4.The naming of main menu functions has to be easy to understand. In addition, it’s obvious for the correction of comprehension, aesthetic, and preference of icon, especially to aesthetic and preference.(.945)
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Khani, Mohammad Hossein. "Mechanisms of color processing in the retina." Doctoral thesis, 2017. http://hdl.handle.net/11858/00-1735-0000-002E-E515-D.
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何美慧. "Design and Analysis of Single-cell-gap Full-color Dual-view Liquid Crystal Display." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/683zwh.
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碩士國立彰化師範大學
光電科技研究所
102
This thesis demonstrates the designation of single cell gap dual view liquid crystal (DVLCD) using the twisted nematic liquid crystal, which is filled into the cell with patterned electrodes. DVLCD provides two different images in the left and right viewing directions simultaneously. In this thesis, the main pixel of the DVLCD comprises the right sub-pixels (RSPs) and the left sub-pixels (LSPs). The LCs in the RSPs and the LSPs have the opposite rotation directions, which are controlled by the inclined electric fields provided by the patterned electrodes. The wavelength sensitive problem of the DVLCD is solved by TN structure of the employed nematic. When the cell gap is 12 μm, TN twisted angle is 80 degree, the DVLCD has the optimized contrast ratio and cross talk ratio of 100 and 0.06, respectively.
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Lin, Chih-Hung, and 林志鴻. "The Study of Related Characteristics for Color Changeable-Packaged Crystalline Silicon Solar Cell Module." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/96300268968393172902.
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碩士國立勤益科技大學
機械工程系
100
As the cost of conventional energy such as fossil fuels continues to rise economically and environmentally, the development of alternative and renewable energies has been considered an urgent as well as significant issue after the ever growing concerns about future energy crisis. According to evaluation of scientific research these years, solar power is the most practical and efficient alternative energy. Silicon is the main represent of commercial solar battery materials. They can be divided into three types: monocrystalline silicon, multicrystalline silicon, amorphous silicon. And solar cell module packaging (Solar PV Engineering applied technology) is focused on monocrystalline silicon and multicrystalline silicon. Because amorphous silicon is not suitable for this way of packaging. The disadvantages are the solar cell efficiency will be too low, its life will be too short. In this essay we talk about the process of crystalline silicon packaged, using color- transparent packaging material to reach the needs of color solar cell modules. To compare the difference between monocrystalline silicon and multicrystalline silicon, and to present the series of parameter in the form of pictures and diagrams, in order to build up related research achievements. Ex: Optical transmittance of different colors-packaged material, solar cell efficiency of different color-solar batteries, data of ultraviolet radiation aging-material experiment or adding optical whitening agents to rise the electrical characteristics of solar cell module…ect. We hope these easy-packaged and various solar cell modules can be applied in related products in daily life. Ex: 3C products, toy gifts, landscape public lightings, traffic signals construction, solar power house system…etc. To make solar batteries be more prefect and nature in human life. We all can feel its convenience and practicality in everywhere, at anytime.
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Chang, Jui-Feng, and 張瑞峰. "Time-dependent Global Gene Expression Alteration in Human Glioma Cells After X-irradiation Using A Dual-color Microarray Technology." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/02705826050589109103.
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碩士國立陽明大學
放射醫學科學研究所
89
Among tumors in the central nervous system (CNS), gliomas are the most common type and, unfortunately, high-grade gliomas such as glioblastoma multiforme (GBM) are the most challenging tumor in clinical oncology. After surgery and radiotherapy treatments, patients with GBM may prolong their life span, usually up to 9 months on average. It appears that fundamental understanding of this CNS tumor with respect to its disease progression and response to radiation treatments may be necessary to further improve its management. We postulated that most, if not all, radiation-mediated cellular events would result from alterations in gene expression in response to radiation treatment. Thus, this study was designed to investigate the global gene expression patterns of a human glioblastoma cell line, U-87 MG, and those genes that show significant changes in their expression levels after Co-60 gamma-ray irradiation. Cells grown in late exponential phase were irradiated with 20 Gy of gamma-rays and their global gene expression was monitored at 0.5, 4, 8, 12 and 24 hrs post-irradiation, using a Dual-Colorimetric Microarray Technology containing 9,600 cDNA on a nylon membrane. Flow cytometry was used to reveal the DNA content and cell-cycle distribution. To ensure experimental reproducibility, each set of experiments consisted of three repeats, and the average gene expression ratios and their respective errors were used for subsequent data analyses. We found that cell progression was perturbed resulting in G2 cell accumulation at prolong incubation. Microarray data showed that overall the expression of about 630 genes were significantly altered compared to their unirradiated counterparts. Interestingly, genes known to be involved in DNA double strand-break rejoining, Ku80 (XRCC5) and DNA-PK did not change throughout the entire incubation period. However, while for excision repair, ERCC5 but not GADD45 showed time-dependent expression changes. These results suggest that some key repair enzymes are pre-existing endogenously in U-87 for their needs. At the same time, a variety of cell-cycle regulatory genes exhibited various degree of expression changes; but such changes occur exclusively in early times (0.5—4 hrs) post-irradiation. This early response appears to correlate with cell progression delay including G2 accumulation which was observed at a later time. Since the relatively large dose used in these experiments, program cell death might be expected to occur. We found that tumor p53 and pro-survival bcl-2 did not change appreciably after irradiation, while pro-death bax was elevated at 12 hrs post-irradiation. Further, other genes which play a role in the down stream of apoptotic pathways appear to exhibit various degrees of expression following treatment. From these overall data, it appears that for U87 cells radiation-initiated program cell death may occur much later than 12 hrs. Finally, several cytokine and growth factor genes involved in activation of inflammation and angiogenesis showed up- or down-regulated postirradiation except for VEGF. Further analysis using self-organization map (SOM) and hierarchical gene clustering for these time-dependent gene expression data may help strengthen the present initial analysis and interpretations. Future experiments designed specifically for known biological events inflicted by radiation, such as apoptosis and mitotic death, may render interesting correlates between global gene expression and the cellular responses.
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LI, JHONG-YU, and 李忠諭. "Reduced graphene oxide modified organic Fabry-Perot interference for color selection dye-sensitised solar cell." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/b8r8ku.
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碩士國立雲林科技大學
電子工程系
107
The purpose of the study was to modify solar cells with the reduced graphene oxide. The organic Febry-Perot provides the choice of color. There are three parts in the thesis: (1) using Hammer’s method to prepare different percentage by weight of reduced graphene oxide to modify dye sensitized solar cell, (2) preparing hole type PEDOT: PSS, electronic type PCBM and organic type Fabry-Perot to choose different color, using Macleod to simulate different depth corresponding to different color, (3) the structure of reduced graphene oxide and organic type Fabry-Perot with dye-sensitized solar cell is FTO/TiO2-rGO/Ag/Fabry-Perot. This thesis mainly discusses the use of thrips to prepare different weight percentages (1wt%, 5wt%, 10wt%) of reduced graphene oxide modified dye solar cells and study their optimal electrical efficiency, and then use the organic material hole type PEDOT: PSS and electronic PCBM combine organic Fabry-Perot to select different colors, and use Macleod to simulate different thicknesses corresponding to different colors. The experimental results are measured by UV/VIS spectrometer, Raman spectrometer, XRD and SEM to reduce graphene oxide. The material is synthesized and the optimum efficiency is measured by blending the concentration. The optimum parameters for the reduced graphene oxide are 5wt% and the efficiency is 3.6%, which is 28%. Finally, the organic Fabry-Perot is combined, the efficiency is 4.05%, and the original ratio is increased by 44%.