Relevant bibliographies by topics / Pox2

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Pox2'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Pox2"

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Wang, Huijie J., Marie-Thérèse Le Dall, Yves Waché, et al. "Evaluation of Acyl Coenzyme A Oxidase (Aox) Isozyme Function in the n-Alkane-Assimilating YeastYarrowia lipolytica." Journal of Bacteriology 181, no. 17 (1999): 5140–48. http://dx.doi.org/10.1128/jb.181.17.5140-5148.1999.

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ABSTRACT We have identified five acyl coenzyme A (CoA) oxidase isozymes (Aox1 through Aox5) in the n-alkane-assimilating yeastYarrowia lipolytica, encoded by the POX1through POX5 genes. The physiological function of these oxidases has been investigated by gene disruption. Single, double, triple, and quadruple disruptants were constructed. Global Aox activity was determined as a function of time after induction and of substrate chain length. Single null mutations did not affect growth but affected the chain length preference of acyl-CoA oxidase activity, as evidenced by a chain length specificity for Aox2 and Aox3. Aox2 was shown to be a long-chain acyl-CoA oxidase and Aox3 was found to be active against short-chain fatty acids, whereas Aox5 was active against molecules of all chain lengths. Mutations in Aox4 and Aox5 resulted in an increase in total Aox activity. The growth of mutant strains was analyzed. In the presence of POX1 only, strains did not grow on fatty acids, whereas POX4 alone elicited partial growth, and the growth of the double POX2-POX3-deleted mutant was normal excepted on plates containing oleic acid as the carbon source. The amounts of Aox protein detected by Western blotting paralleled the Aox activity levels, demonstrating the regulation of Aox in cells according to the POX genotype.
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Goffin, Philippe, Lidia Muscariello, Frederique Lorquet, et al. "Involvement of Pyruvate Oxidase Activity and Acetate Production in the Survival of Lactobacillus plantarum during the Stationary Phase of Aerobic Growth." Applied and Environmental Microbiology 72, no. 12 (2006): 7933–40. http://dx.doi.org/10.1128/aem.00659-06.

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ABSTRACT In addition to the previously characterized pyruvate oxidase PoxB, the Lactobacillus plantarum genome encodes four predicted pyruvate oxidases (PoxC, PoxD, PoxE, and PoxF). Each pyruvate oxidase gene was individually inactivated, and only the knockout of poxF resulted in a decrease in pyruvate oxidase activity under the tested conditions. We show here that L. plantarum has two major pyruvate oxidases: PoxB and PoxF. Both are involved in lactate-to-acetate conversion in the early stationary phase of aerobic growth and are regulated by carbon catabolite repression. A strain devoid of pyruvate oxidase activity was constructed by knocking out the poxB and poxF genes. In this mutant, acetate production was strongly affected, with lactate remaining the major end product of either glucose or maltose fermentation. Notably, survival during the stationary phase appeared to be dramatically improved in the poxB poxF double mutant.
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Masuda, Yutaka, Sun Mee Park, Akinori Ohta, and Masamichi Takagi. "Cloning and characterization of the POX2 gene in Candida maltosa." Gene 167, no. 1-2 (1995): 157–61. http://dx.doi.org/10.1016/0378-1119(95)00655-9.

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Guo, Yanqiong, Huanlu Song, Zhaoyue Wang та Yongzhi Ding. "Expression of POX2 gene and disruption of POX3 genes in the industrial Yarrowia lipolytica on the γ-decalactone production". Microbiological Research 167, № 4 (2012): 246–52. http://dx.doi.org/10.1016/j.micres.2011.10.003.

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Moussa, Tarek A. A. "Molecular characterization of the phenol oxidase (pox2) gene from the ligninolytic fungusPleurotus ostreatus." FEMS Microbiology Letters 298, no. 2 (2009): 131–42. http://dx.doi.org/10.1111/j.1574-6968.2009.01708.x.

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Pignède, Georges, Hui-Jie Wang, Franck Fudalej, Michel Seman, Claude Gaillardin, and Jean-Marc Nicaud. "Autocloning and Amplification of LIP2 inYarrowia lipolytica." Applied and Environmental Microbiology 66, no. 8 (2000): 3283–89. http://dx.doi.org/10.1128/aem.66.8.3283-3289.2000.

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ABSTRACT We synthesized a Yarrowia lipolytica strain overproducing lipase for industrial applications by using long terminal repeat (ζ) of the Y. lipolytica retrotransposon Ylt1 and an allele of URA3 with a promoter deletion to construct JMP3. JMP3 is a derivative of plasmid pHSS6 carrying aNotI-NotI cassette which contains a defectiveURA3 allele, a polylinker sequence, and the ζ region for targeting to multiple sites in the genome of the recipient. We inserted the LIP2 gene (encoding extracellular lipase) under the control of the strong POX2 promoter into JMP3 to generate JMP6. The pHSS6 region was removed by NotI digestion prior to transformation. Two Y. lipolytica strains transformed with the JMP6 LIP2 cassette had a mean of 10 integrated copies devoid of the Escherichia coli region, corresponding to an autocloning event. The copy number in the transformants was stable even after 120 generations in nonselective and lipase-inducing conditions. The resulting strains could produce 0.5 g of active lipase per liter in the supernatant, 40 times more than the single-copy strain with the LIP2 promoter. This work provides a new expression system in Y. lipolytica that results in strains devoid of bacterial DNA and in strains producing a high level of lipase for industrial uses, waste treatment, and pancreatic insufficiency therapy.
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Fabiszewska, Misiukiewicz-Stępień, Paplińska-Goryca, Zieniuk, and Białecka-Florjańczyk. "An Insight into Storage Lipid Synthesis by Yarrowia lipolytica Yeast Relating to Lipid and Sugar Substrates Metabolism." Biomolecules 9, no. 11 (2019): 685. http://dx.doi.org/10.3390/biom9110685.

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Single cell oil (SCO) is the lipid accumulated in the cells of oleaginous microorganisms. Cellular lipids can be synthesized in two different pathways: de novo by metabolizing hydrophilic substrates and ex novo by fermenting hydrophobic substrates. The aim of the study was to evaluate the effect of carbon source (glucose and olive oil) in the culture medium on the course of microbial oil accumulation in Y. lipolytica cells. The level of selected gene expression by real time quantitative PCR method was investigated. The significant increase in expression of the POX2 gene encoding acyl-CoA oxidase II, which preferentially oxidizes long-chain acyl-CoAs formed from substrate fatty acids incorporated inside the microbial cell, was observed in medium with olive oil in relation to glucose containing medium. Noteworthily, the presence of lipid carbon substrate did not inhibit the level of ACL gene transcription coding for ATP-citrate lyase, the key enzyme of the lipid de novo accumulation process. The present study indicated that de novo lipid biosynthesis could occur despite the presence of fatty acids in the medium, and the synthesis of storage lipids in the presence of lipid carbon substrates could be carried out with the use of both pathways (de novo and ex novo).
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Picataggio, S., K. Deanda, and J. Mielenz. "Determination of Candida tropicalis acyl coenzyme A oxidase isozyme function by sequential gene disruption." Molecular and Cellular Biology 11, no. 9 (1991): 4333–39. http://dx.doi.org/10.1128/mcb.11.9.4333.

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A recently developed transformation system has been used to facilitate the sequential disruption of the Candida tropicalis chromosomal POX4 and POX5 genes, encoding distinct isozymes of the acyl coenzyme A (acyl-CoA) oxidase which catalyzes the first reaction in the beta-oxidation pathway. The URA3-based transformation system was repeatedly regenerated by restoring the uracil requirement to transformed strains, either through selection for spontaneous mutations or by directed deletion within the URA 3 coding sequence, to permit sequential gene disruptions within a single strain of C. tropicalis. These gene disruptions revealed the diploid nature of this alkane- and fatty acid-utilizing yeast by showing that it contains two copies of each gene. A comparison of mutants in which both POX4 or both POX5 genes were disrupted revealed that the two isozymes were differentially regulated and displayed unique substrate profiles and kinetic properties. POX4 was constitutively expressed during growth on glucose and was strongly induced by either dodecane or methyl laurate and to a greater extent than POX5, which was induced primarily by dodecane. The POX4-encoded isozyme demonstrated a broad substrate spectrum in comparison with the narrow-spectrum, long-chain oxidase encoded by POX5. The absence of detectable acyl-CoA oxidase activity in the strain in which all POX4 and POX5 genes had been disrupted confirmed that all functional acyl-CoA oxidase genes had been inactivated. This strain cannot utilize alkanes or fatty acids for growth, indicating that the beta-oxidation pathway has been functionally blocked.
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Picataggio, S., K. Deanda, and J. Mielenz. "Determination of Candida tropicalis acyl coenzyme A oxidase isozyme function by sequential gene disruption." Molecular and Cellular Biology 11, no. 9 (1991): 4333–39. http://dx.doi.org/10.1128/mcb.11.9.4333-4339.1991.

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A recently developed transformation system has been used to facilitate the sequential disruption of the Candida tropicalis chromosomal POX4 and POX5 genes, encoding distinct isozymes of the acyl coenzyme A (acyl-CoA) oxidase which catalyzes the first reaction in the beta-oxidation pathway. The URA3-based transformation system was repeatedly regenerated by restoring the uracil requirement to transformed strains, either through selection for spontaneous mutations or by directed deletion within the URA 3 coding sequence, to permit sequential gene disruptions within a single strain of C. tropicalis. These gene disruptions revealed the diploid nature of this alkane- and fatty acid-utilizing yeast by showing that it contains two copies of each gene. A comparison of mutants in which both POX4 or both POX5 genes were disrupted revealed that the two isozymes were differentially regulated and displayed unique substrate profiles and kinetic properties. POX4 was constitutively expressed during growth on glucose and was strongly induced by either dodecane or methyl laurate and to a greater extent than POX5, which was induced primarily by dodecane. The POX4-encoded isozyme demonstrated a broad substrate spectrum in comparison with the narrow-spectrum, long-chain oxidase encoded by POX5. The absence of detectable acyl-CoA oxidase activity in the strain in which all POX4 and POX5 genes had been disrupted confirmed that all functional acyl-CoA oxidase genes had been inactivated. This strain cannot utilize alkanes or fatty acids for growth, indicating that the beta-oxidation pathway has been functionally blocked.
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Ors, M., B. Randoux, A. Siah, et al. "A Plant Nutrient- and Microbial Protein-Based Resistance Inducer Elicits Wheat Cultivar-Dependent Resistance Against Zymoseptoria tritici." Phytopathology® 109, no. 12 (2019): 2033–45. http://dx.doi.org/10.1094/phyto-03-19-0075-r.

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The induction of plant defense mechanisms by resistance inducers is an attractive and innovative alternative to reduce the use of fungicides on wheat against Zymoseptoria tritici, the responsible agent of Septoria tritici blotch (STB). Under controlled conditions, we investigated the resistance induction in three wheat cultivars with different susceptible levels to STB as a response to a treatment with a sulfur, manganese sulfate, and protein-based resistance inducer (NECTAR Céréales). While no direct antigermination effect of the product was observed in planta, more than 50% reduction of both symptoms and sporulation were recorded on the three tested cultivars. However, an impact of the wheat genotype on resistance induction was highlighted, which affects host penetration, cell colonization, and the production of cell-wall degrading enzymes by the fungus. Moreover, in the most susceptible cultivar Alixan, the product upregulated POX2, PAL, PR1, and GLUC gene expression in both noninoculated and inoculated plants and CHIT2 in noninoculated plants only. In contrast, defense responses induced in Altigo, the most resistant cultivar, seem to be more specifically mediated by the phenylpropanoid pathway in noninoculated as well as inoculated plants, since PAL and CHS were most specifically upregulated in this cultivar. In Premio, the moderate resistant cultivar, NECTAR Céréales elicits mainly the octadecanoid pathway, via LOX and AOS induction in noninoculated plants. We concluded that this complex resistance-inducing product protects wheat against Z. tritici by stimulating the cultivar-dependent plant defense mechanisms.
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Dissertations / Theses on the topic "Pox2"

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Mendonça, Cláudia Sofia de Sousa. "Requisitos para redes NG-PON2." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/4393.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>Hoje em dia, o comum entendimento é que as novas redes de acesso em fibra óptica poderão fornecer capacidades ilimitadas; no entanto, na realidade, os aspectos práticos de implementação, as opções arquitecturais e de desempenho de equipamentos de rede levam quase sempre a uma capacidade limitada, embora bastante superior à actualmente disponível pelas redes de cobre. Sendo assim, é preciso continuar a progredir na descoberta de novas soluções que permitam superar estas questões. Para que isso seja possível, será aqui apresentado um estudo das redes de próxima geração em termos das opções para existentes para combater as limitações actuais tentando obter uma direcção para os próximos anos. Neste documento é apresentado um estudo das redes de acesso anteriores a NG-PON2, são procuradas em projectos actuais de grande envergadura e em publicações actuais de grupos de investigação de relevo tendências que contribuam para os vários requisitos de NG-PON2.<br>Nowadays, the common understanding is that the new access networks in optical fiber can provide unlimited capabilities; however, in reality, the practical aspects of the implementation, the architectural and network equipment performance options often lead to limited capacity values, although far superior to those currently available for copper networks. Therefore, we must continue to progress in finding new solutions to address these issues. To make this possible, a study of next-generation networks will be presented here, presenting the options available to tackle the existing constraints and to try to get a direction for the following years. In this document, a study of the access networks prior to NG-PON2 is presented, as well as trends in current projects in major publications and in relevant current research groups that contribute to the various requirements for NG-PON2.
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Monteiro, Paulo Miguel Alves. "Redes ópticas avançadas coerentes NG-PON2." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/4931.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>Hoje em dia, existe a percepção de que as novas redes de acesso em fibra óptica conseguem fornecer capacidades ilimitadas; contudo a realidade é diferente, e os aspectos práticos de implementação, as opções arquitecturais e de desempenho de equipamentos de rede levam quase sempre a uma capacidade limitada, embora bastante superior à actualmente disponível pelas redes de cobre. Sendo assim é fundamental continuar a procura de novas soluções que permitam superar estas questões. Neste trabalho é apresentado um estudo das redes de nova geração em termos das opções existentes para combater as limitações actuais, bem como as tendências para os próximos anos, onde se enquadram as redes ópticas coerentes, que são vistas como uma forte possibilidade para cumprir os requisitos de NG-PON2.<br>Nowadays, there is the perception that new optical fiber access networks can provide unlimited capabilities, but the reality is different. The practicalities of implementation, the architectural options and performance of network equipment almost always lead to a limited capacity. However, optical fiber networks have much greater capacity than the existing copper networks. Therefore it is essential to continue the search for new solutions to address these issues. To make this possible, is presented here a study of next generation networks in terms of options to tackle the current constraints, and to obtain a direction for the upcoming years, where they fit coherent optical networks, which are seen as a strong possibility to fulfil NG-PON2 requirements.
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Borden, J. Benjamin. "New-fangled copper pox /." Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1328049371&sid=17&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Hrmel, Martin. "Využití optických zesilovačů v sítích NG-PON2." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220596.

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The aim of the thesis was to introduce the standard ITU-T G.989. Introduction deals with passive network architecture, which clarifies the basic functional elements that occur in optical networks. Been described active components and the very principle of data transfer in the distribution network. Next section is devoted to new technologies that are defined for the latest generation of passive networks NG-PON2. There have been a principle of data transmission in such networks and their advantages and disadvantages. I described the principle of data transmission in such networks and their advantages and disadvantages. The practical part deals with creating a functional network of NG-PON2 also using optical amplifiers. Another suggestion was using a digital CATV transmission of QAM modulation under optical networks on a dedicated wavelength of 1550 nm. Also simulate the coexistence of this new standard with previous PON technologies. Finally, the work consisted in implementing the Miller’s code into OptSim v5.2 environment, which compared the transmission characteristics of each line of codes with this Miller’s code. All practical simulations were designed and simulated in program OptSim v5.2.
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Cymorek, Patrik. "Implementace standardu NG-PON2 do OPNET Modeleru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316919.

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The aim of this paper is to apprise ourselves with communication in NG-PON2 standard. The first chapter describes optical networks. The second chapter deals with description of NG-PON2 standard and detailed description of downstream and upstream frame. Methods of grant allocation are described at the end of the theoretical section of this paper. Own entities were created in the practical part of this paper and they were used to simulate static and dynamic grant allocation. Designed entities and simulation results were compared with the real network behaviour at the end of the practical part. Designed entities were also used to design a lab exercise in the attachment.
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Hodges, Alastair N. H. "Effect of hyperbaric oxygen on venous PO2, transcutaneous PO2, and VO2max in a normobaric environment." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30175.

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Purpose. The purpose was to examine venous PO2, transcutaneous tissue PO2 (PtcO 2), and VO2max in a normobaric environment following a single HBO2 treatment. Methods. Ten moderately trained (VO2max = 57.6 mL&middot;kg-1&middot;min -1) males volunteered for the study. Baseline testing included measures of VO2max, PtcO2, and anthropometry. Subjects received two HBO2 treatments, which consisted of breathing 95% oxygen at 2.5 ATA for 90 min. Following the first HBO2 treatment (6.0 +/- 1.0 min), subjects performed a VO2max test. Following the second HBO2 treatment, leg and chest PtcO2 and venous PO2 were monitored for 60 min. Results . VO2max, running time, and peak La were not altered (p < 0.05) post-HBO2 treatment. Leg PtcO2 was lower (p < 0.05) and chest PtcO2 was unchanged following the HBO2 treatment compared to baseline values. Venous PO2 was lower in the first 3 min post-HBO2 treatment than subsequent values, but no other differences were found (p < 0.05). Conclusion. The results of this study show that a single HBO 2 treatment at 2.5 ATA for 90 min does not elevate venous PO2, PtcO2, or VO2max in a normobaric, normoxic environment.
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Morgado, Tiago Manuel Coelho. "Photonic integrated circuits for use in NG-PON2 networks." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/18520.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>Nos dias que correm com a adoção generalizada de smartphones, conteúdos de vídeo, computação em nuvem e redes sociais, o volume de tráfego não para de aumentar. Assim, existe uma procura constante para melhorar a largura de banda das redes existentes. Neste contexto surgiu a Next Generation Passive Optical Network Phase (NG-PON) 2 a qual é um novo standard que vai permitir um aumento da largura de banda que pode chegar aos 80Gbps. O conhecimento dos requisitos do standard NG-PON 2 é importante, para que se possam produzir equipamentos que possam vir a ser utilizados nestas redes. Atualmente existe uma grande evolução nas comunicações óticas. Esta evolução tecnológica levou ao aparecimento de Photonic Integrated Circuits(PICs). Os PICs permitem a integração no mesmo chip de diversos componentes óticos permitindo assim construir circuitos com maior desempenho e fiabilidade. Cada vez mais, existe um grande investimento nesta área, estão inclusivamente a aparecer softwares cujo propósito é permitir aos utilizadores criar e simular PICs, para que estes possam ser posteriormente construídos. É então importante o conhecimento das caraterísticas mais importantes dos blocos que estes softwares permitem simular. Neste trabalho serão testados alguns blocos do “VPItoolkit PDK HHI” que é um toolkit que quando adicionado no software VPItransmissionMaker™, permite simular os componentes produzidos pelo Heinrich Hertz Institute (HHI). Com estes componentes, serão ainda feitas simulações visando a sua utilização em uma rede NG-PON2. Foi também dada grande atenção ao estudo dos Multimode Interference Devices (MMI) dos quais foi feito um modelo em MATLAB. E ao mach Zehnder Modulator (MZM) do qual foi realizada uma animação a demostrar dinamicamente a propagação da Luz dentro dele. Foram ainda sugeridas duas arquiteturas possíveis para um tranceiver a ser utilizado no Optical Network Unit (ONU) em redes NG-PON 2.<br>Nowadays with the widespread adoption of smartphones, video content, cloud computing and social networks, the volume of traffic is constantly increasing. Therefore, it exists a constant demand to improve the bandwidth of the existing networks. In this context emerged the Next Generation Passive Optical Network Phase (NG-PON 2), which is a new standard that will allow an increase in the bandwidth up to 80 Gbps. The knowledge of the requirements of the standard NG-PON 2 is important, to allow the production of equipment that can be used in these networks. Currently there is a major evolution in optical communications. This technological evolution has led to the emergence of Photonic Integrated Circuits (PICs). By using PICs various optical components can be integrated on the same chip, allowing to build circuits with higher performance and reliability. Currently there is a large investment in this area, software whose purpose is to allow users to create and simulate PICs are starting to appear, to subsequently allow a correct manufacturing of the PICs. It is important to know the most important features of these software blocks and what do they allow to simulate. During this work some blocks from "VPItoolkit PDK HHI" will be tested. "VPItoolkit PDK HHI" is a toolkit that when added in VPItransmissionMaker ™ software allows the simulation of the components produced by the Heinrich Hertz Institute (HHI). With these components, simulations were made to test their use in a NG-PON2 network. It was also given attention to the study of the Multimode Interference Devices (MMI) from which was created a model in MATLAB. And to the Mach Zehnder Modulator (MZM) from which was made an animation to dynamically demonstrate the propagation of light inside him. It was also suggested two possible architectures for a transceiver to be used on the Optical Network Unit (ONU) in NG-PON 2 networks.
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Kitching, Richard Paul. "Studies on sheep and goat pox." Thesis, University of Edinburgh, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.482688.

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Ferreira, Ana Rita Rodrigues. "Photonic integrated circuits development: a universal transceiver for NG-PON2." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15974.

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Mestrado em Engenharia Eletrónica e Telecomunicações<br>In the last years there has been a clear evolution in the world of telecommunications, which goes from new services that need higher speeds and higher bandwidth, until a role of interactions between people and machines, named by Internet of Things (IoT). So, the only technology able to follow this growth is the optical communications. Currently the solution that enables to overcome the day-by-day needs, like collaborative job, audio and video communications and share of les is based on Gigabit-capable Passive Optical Network (G-PON) with the recently successor named Next Generation Passive Optical Network Phase 2 (NG-PON2). This technology is based on the multiplexing domain wavelength and due to its characteristics and performance becomes the more advantageous technology. A major focus of optical communications are Photonic Integrated Circuits (PICs). These can include various components into a single device, which simpli es the design of the optical system, reducing space and power consumption, and improves reliability. These characteristics make this type of devices useful for several applications, that justi es the investments in the development of the technology into a very high level of performance and reliability in terms of the building blocks. With the goal to develop the optical networks of future generations, this work presents the design and implementation of a PIC, which is intended to be a universal transceiver for applications for NG-PON2. The same PIC will be able to be used as an Optical Line Terminal (OLT) or an Optical Network Unit (ONU) and in both cases as transmitter and receiver. Initially a study is made of Passive Optical Network (PON) and its standards. Therefore it is done a theoretical overview that explores the materials used in the development and production of this PIC, which foundries are available, and focusing in SMART Photonics, the components used in the development of this chip. For the conceptualization of the project di erent architectures are designed and part of the laser cavity is simulated using Aspic™. Through the analysis of advantages and disadvantages of each one, it is chosen the best to be used in the implementation. Moreover, the architecture of the transceiver is simulated block by block through the VPItransmissionMaker™ and it is demonstrated its operating principle. Finally it is presented the PIC implementation.<br>Nos últimos anos tem existido uma evidente evolução no mundo das telecomunicações, que vai desde novos serviços que requerem maiores velocidades e maior largura de banda, a um role de interações entre pessoas e máquinas, designada por Internet of Things (IoT). Assim, a única tecnologia capaz de acompanhar este crescimento são as comunicações óticas. Atualmente a solução que permite colmatar as necessidades do dia-a-dia, tais como trabalhar colaborativamente, comunicar por áudio e vídeo, e partilhar ficheiros, é baseada no Gigabit-capable Passive Optical Network (G-PON) com a mais recente evolução designada por Next Generation Passive Optical Network Phase 2 (NG-PON2). Esta tecnologia baseia-se na multiplexagem no domínio do comprimento de onda e devido às suas características e desempenho torna-se a tecnologia mais vantajosa. Um dos principais focos das comunicações óticas são os Photonic Integrated Circuits (PICs). Estes conseguem englobar num único dispositivo vários componentes, o que simplifica o desenho do sistema ótico, reduzindo o espaço e o consumo de energia e melhora a confiabilidade. Estas caracteristicas tornam este tipo de dispositivos vantajosos para uma série de aplicações, justificando os investimentos no desenvolvimento da tecnologia para um nível muito elevado de desempenho e fiabilidade ao nível dos blocos de construção. Com o objetivo de desenvolver as redes óticas passivas de futuras gerações, este trabalho apresenta o desenho e a implementação de um PIC que visa ser um transrecetor universal para aplicações para NG-PON2. O mesmo PIC pode ser usado como Optical Line Terminal (OLT) ou como Optical Network Unit (ONU) e em ambos os casos como transmissor e recetor. Inicialmente é feito um estudo das redes óticas passivas e os seus standards. Seguidamente é feita uma abordagem teórica que explora um pouco dos materiais usados no desenvolvimento e produção de um PIC, quais as fábricas existentes, focando na SMART Photonics e os componentes usados no desenvolvimento deste chip. Com vista à concetualização do projeto, diferentes arquiteturas são desenhadas e a parte da cavidade do laser é simulada usando o Aspic™. Partindo da análise das vantagens e desvantagens de cada uma delas, é escolhida a melhor para utilizar na implementação. De seguida, a arquitetura do transrecetor é simulada bloco a bloco através do VPItransmissionMaker™ e é demonstrado o seu princípio de funcionamento. Finalmente é apresentada a implementação do PIC.
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Khan, Rameez Ahmed. "Analysis of the performance of Hybrid TWDM Passive OpticalNetworks (NG-PON2)." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-102467.

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In this study, a review of research literature has been carried out to investigate Hybrid Time and wavelength Division Multiplexing techniques with respect to reach, split ratio, and speed of the network. This was done to overcome challenges presented by Passive Optical Networks, such as the reach and the high split ratio. A comparison of different methods clarifies that Hybrid PassiveOptical Networks have a high power-budget that ensure efficient signal transmission. The Optisys software has been used to analyze the performance of the different techniques.
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Books on the topic "Pox2"

1

Abdulmuttalib, Fahema, ed. Chicken pox. Amana Publications, 1995.

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McDuff, Dona. Chicken pox! Great Source Education Group, 1995.

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ill, Donohue Dorothy, ed. Turkey pox. A. Whitman, 1996.

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ill, Cony Frances, ed. Chicken pox! Joy Street Books, 1993.

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Powell, Jillian. Chicken pox. Cherrytree Pub., 2007.

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Chicken pox. Chelsea House, 2009.

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Roddie, Shen. Chicken pox! Tango Books, 1993.

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Strong, Jeremy. Dinosaur Pox. Penguin Group UK, 2009.

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Yan Poxi wai zhuan. Zhejiang gu ji chu ban she, 1991.

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Ehrlich, Amy. Chicken pox winter. Weekly Reader Books, 1987.

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Book chapters on the topic "Pox2"

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Chang, Nam Fung. "Polysystem theory and translation." In Handbook of Translation Studies. John Benjamins Publishing Company, 2010. http://dx.doi.org/10.1075/hts.1.pol2.

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Wang, Ning. "Postmodernism." In Handbook of Translation Studies. John Benjamins Publishing Company, 2012. http://dx.doi.org/10.1075/hts.3.pos2.

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Roulet, Eddy. "Polyphony." In Handbook of Pragmatics. John Benjamins Publishing Company, 1997. http://dx.doi.org/10.1075/hop.2.pol2.

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Kessler, M., and J. Höper. "Potentiometric Polarographic PO2 Electrode (PO2-PPE)." In Oxygen Transport to Tissue XI. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5643-1_17.

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Newsinger, John. "Pox Britannica." In Orwell's Politics. Palgrave Macmillan UK, 1999. http://dx.doi.org/10.1057/9780333983607_1.

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Böning, Dieter, Michael I. Lindinger, Damian M. Bailey, et al. "Arterial PO2." In Encyclopedia of Exercise Medicine in Health and Disease. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-540-29807-6_4065.

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Gulley, James L., Philip M. Arlen, and Jeffrey Schlom. "Pox Viral Vaccines." In Handbook of Cancer Vaccines. Humana Press, 2004. http://dx.doi.org/10.1007/978-1-59259-680-5_13.

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Mehlhorn, Heinz. "Rickettsial Small Pox." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_4874.

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Mehlhorn, Heinz. "Rickettsial Small Pox." In Encyclopedia of Parasitology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_4874-1.

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Steinacker, J. M., K. Röcker, and R. E. Wodick. "Arterieller pO2 bei Laufbandbelastung." In Sportmedizin — Kursbestimmung. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-72571-5_76.

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Conference papers on the topic "Pox2"

1

Nakamura, Hirotaka. "NG-PON2 Technologies." In National Fiber Optic Engineers Conference. OSA, 2013. http://dx.doi.org/10.1364/nfoec.2013.nth4f.5.

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Israr, Ali, Siyan Zhao, Kyna McIntosh, et al. "Po2." In SIGGRAPH '15: Special Interest Group on Computer Graphics and Interactive Techniques Conference. ACM, 2015. http://dx.doi.org/10.1145/2782782.2792489.

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"Session PO2: PO2 — Digital signal processing." In TELSIKS 2011 - 2011 10th International Conference on Telecommunication in Modern Satellite, Cable and Broadcasting Services. IEEE, 2011. http://dx.doi.org/10.1109/telsks.2011.6143258.

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"POD2: Assistive Robotics I." In 2007 IEEE 10th International Conference on Rehabilitation Robotics. IEEE, 2007. http://dx.doi.org/10.1109/icorr.2007.4428385.

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Heron, Ronald W., and Ed Harstead. "FSAN NG-PON2 updates." In Optical Fiber Communication Conference. OSA, 2013. http://dx.doi.org/10.1364/ofc.2013.ow4d.5.

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Wang, Rui, Partha Bhaumik, Han-Hyub Lee, Sang-Soo Lee, and Biswanath Mukherjee. "Energy Management in NG-PON2." In Optical Fiber Communication Conference. OSA, 2014. http://dx.doi.org/10.1364/ofc.2014.tu3c.4.

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Rui Wang, Partha Bhaumik, Han Hyub Lee, Sang Soo Lee, and Biswanath Mukherjee. "Towards green NG-PON2 systems." In 2014 12th International Conference on Optical Internet 2014 (COIN). IEEE, 2014. http://dx.doi.org/10.1109/coin.2014.6950571.

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Kaur, Ramandeep, and Simranjit Singh. "A Review on Evolution Trends in Passive Optical Networks." In International Conference on Women Researchers in Electronics and Computing. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.114.30.

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In this paper, the passive optical network (PON) evolution trend has been discussed. The literature of PON standards which are ATM PON (APON), Broadband PON (BPON), Gigabit PON (GPON), 10-Gigabit-capable passive optical networks (XG-PON) and next-generation PON2 (NG-PON2) has been reviewed extensively. From the literature review, a comparison of the PON technologies is made. The GPON, XG-PON and NG-PON2 are the most recent PON generations, and these are simulated to find the split per wavelength supported. The Q-factor below 6 is considered unacceptable in the analysis. The results show that the GPON can support 32 ONU when transmitted power set to 3dB. In the case of XG-PON, the Q-factor remains more than 6 for a split ratio up to 16. For the NG-PON2, the observed Q-factor is more than 6 for split up to 32. However, as the split increases above 32, the Q-factor falls below the acceptable level of 6.
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Kani, Jun-ichi. "Advanced optical access beyond NG-PON2." In Photonics in Switching. OSA, 2014. http://dx.doi.org/10.1364/ps.2014.pt5b.4.

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Zhong, Guo-Qiang, Pei-Li Sun, and Hung-Shing Chen. "SPARKLE ESTIMATION OF METALLIC SAMPLES USING A LOW-COST SYSTEM." In CIE 2018. International Commission on Illumination, CIE, 2018. http://dx.doi.org/10.25039/x45.2018.po22.

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Reports on the topic "Pox2"

1

Johnson, T. M., W. A. Gerth, and D. G. Southerland. 1.3 ATA PO2 N2-O2 Decompression Table Validation. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada383688.

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Long, Edwin T., and M. J. Fennewald. Manned Evaluation of the Carleton 1.3 ATA PO2 Primary Electronics Assembly With the MK 16 Underwater Breathing Apparatus. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada383699.

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Gerth, Wayne A., and Thomas M. Johnson. Development and Validation of 1.3 ATA PO2-in-He Decompression Tables for the MK 16 MOD 1 UBA. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada407841.

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Schneider, Stefan, Ashwani Vij, Jeffrey A. Sheehy, Thorsten Schroer, and Karl O. Christe. In Pursuit of the PO2+ Cation. The Reaction of KPO2F2 and SbF5 Leads to an Eight-Membered, Antimony-Oxygen-Phosphorus-Bridged Ring. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada408567.

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