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Rozprawy doktorskie na temat „ULTRAperc”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Patil, Charudatta Subhash. "Membrane reactor technology for ultrapure hydrogen production." Enschede : University of Twente [Host], 2005. http://doc.utwente.nl/50860.

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Nee, James R. D. "Crystallisation of high-silica zeolites under ultrapure conditions." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/12710.

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Bonner, Alison Lee 1966. "Oxidation and removal of organic impurities from ultrapure water." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/277910.

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This study focuses on three aspects of the removal of organic impurities from ultrapure water. The interactions between system components such as ion exchange, UV unit and filter on overall purification are examined. The results indicate that the sequencing of the UV unit and the filter affects the TOC removal efficiency so that greater TOC removal is achieved when filtration precedes UV treatment. Furthermore, a UV unit followed by an ion exchange tank is an effective configuration for the removal of some impurities, but is undesirable for others particularly the charged macromolecules and pa

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Konishi, Kazuki. "Transport properties of photoexcited carriers and excitons in ultrapure diamond." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263446.

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Governal, Robert Andrew. "Characterization and removal of organic contaminants in ultrapure water systems." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/185875.

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Ultrapure water is becoming increasingly important to the semiconductor, pharmaceutical and power industries. Stricter industrial requirements concerning water purity can be realized from pilot scale research. Such a system was designed and operated to determine improved methods to characterize and remove organic contaminants in industrial scale ultrapure water systems. Theoretical modelling of the polishing loop was performed for variable order kinetics; intrinsic reaction parameters were developed, and are potentially scaleable to larger systems. Application of the population balance to the

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Chen, Guoqing 1963. "Measurement and control of organic contaminants in ultrapure water systems." Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282331.

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In semiconductor manufacturing, silicon wafers are repeatedly cleaned with ultrapure water. As the wafer size increases and the line width shrinks, the ultrapure water consumption continues to increase. More stringent requirements are placed on the rinse water specification. Improvements in water purification must be brought forth to meet the needs. The total concentration of all inorganic ions subject to measurement in ultrapure water is often below 1 ppb. By comparison, the concentration of organic contaminants is often an order of magnitude higher. Organic contaminants in rinse water cause

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7

Junior, Eduardo Colla Ruvolo. "Preparação e caracterização de sílica amorfa ultrapura pelo processo sol-gel." Universidade de São Paulo, 1990. http://www.teses.usp.br/teses/disponiveis/54/54132/tde-02042015-120328/.

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A preparação de materiais vítreos e cerâmicos pelo processo sol-gel vem ganhando um desenvolvimento muito grande nos últimos anos, superando em muitos casos as tecnologias convencionais. Este trabalho apresenta um processo sol-gel original de modo a obter sílica densa, amorfa e monolítica cuja estrutura gel é reforçada mecanicamente pela adição ao sol inicial de microesferas de sílica preparadas pelo método de Stöber ou pó de sílica comercial (Cab-O-Sil M5), evitando o problema de quebras. Análises feitas com microscopia eletrônica de transmissão (TEM), área superficial BET, tempo de gelificaç

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Nora, Carine. "Développement d'un capteur conductimétrique pour le contrôle en ligne des traces ioniques dans l'eau ultrapure." Paris 6, 2005. http://www.theses.fr/2005PA066033.

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Liu, Yi. "A STUDY OF BACTERIAL ADAPTATION TO ULTRAVIOLET LIGHT IN ULTRAPURE WATER SYSTEMS." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/193866.

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UV radiation is an essential unit operation in ultra pure water treatment systems forits efficiency in treating microbes and oxidizing organics. This research investigated allfactors that affect the ability of UV light to deactivate and kill microorganisms. Morespecifically, bacterial growth conditions and the UPW stimulation time were investigated.The two major UV lights sources, UV254 and UV 185, were compared. The resultingdeath rates of bacteria living in UPW indicate that UV 185 is very effective in killingbacteria, and even more powerful than UV254, providing there is no mass transferlim

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10

Kin, Kon-Tsu 1964. "Oxidation of trace organic impurities in ultrapure water by UV and ozone." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/282177.

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In this dissertation, the chemical oxidation of trace organic impurities by the treatment of UV light alone, ozone alone, and the combination of UV light and ozone in ultrapure water is discussed. Eighteen model compounds are chosen as the representative organic contaminants. Significant synergistic removal effect by the oxidation of the combination of UV light and ozone has been observed on all model compounds except for trichloroethylene, benzoic acid, and methionine. The removal efficiency by the oxidation of the combined treatment is observed to be greater than that by the oxidation of UV

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11

Nova, Mahmudur Rahman, and Ismail Hsabo Maaz Ahmed. "Diffusion of Innovation in the Hydrogen Industry : The Applications of Ultrapure Water Technologies into Green Hydrogen." Thesis, Uppsala universitet, Institutionen för samhällsbyggnad och industriell teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447690.

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For long now, the world has been depending on the fossil-fuels; mainly oil. But a lot of businesses are moving towards a sustainable future while considering higher growth. Green hydrogen: a solution for the sustainable future has been taking over now. Being the best alternative of fossil-fuels, green hydrogen has a long way to go when it comes to production and usage. Due to many challenges, this solution has not been completely adopted yet. The case company has an innovation that can support the green hydrogen, so we will use DOI, multi-level perspective and cluster theory to identify the va

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12

Facchin, Francesca. "ULTRAPEEP: Lung ultrasound for the assessment of lung recruitment during esophageal pressure-guided PEEP in ARDS." Doctoral thesis, Università degli studi di Padova, 2020. http://hdl.handle.net/11577/3422336.

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Background: Whereas the importance of low tidal volume to avoid ventilator-induced lung injury (VILI) in patients with ARDS is well known, several uncertainties still exist regarding how to set positive end-expiratory pressure (PEEP). Many approaches have been considered, but no one showed a clear effectiveness in terms of outcome. Recently a ventilator strategy using esophageal pressure to estimate the transpulmonary pressure has been proposed by Talmor and colleagues. Although they found an improvement in arterial oxygenation, it was not explored whether the increase in oxygenation was due t

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13

WHITTEMORE, THOMAS EDWARD. "EXPERIMENTAL STUDIES OF QUANTUM OSCILLATIONS IN THE TRANSVERSE MAGNETORESISTANCE OF SINGLE-CRYSTALLINE, ULTRAPURE MAGNESIUM: NON-OHMIC EFFECTS." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183928.

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We report here the observation of non-ohmic behavior in the dominant oscillatory component (the cigar component) of ρ('H) in ultrapure magnesium when the magnetic field, 'H, is parallel to [0001] and the current density, 'J, lies in the basal plane. In order to study this new phenomenon systematically, we had to overcome two experimental problems. The first was the design of an experimental probe which could reproducibly control, at low temperatures, the contact resistance at one of the points where current is injected into the sample without disturbing the sample's orientation with respect to

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14

Kieck, Tom [Verfasser]. "Source production for the neutrino mass experiment ECHo - Highly efficient ion implantation of ultrapure Ho-163 / Tom Kieck." Mainz : Universitätsbibliothek Mainz, 2019. http://d-nb.info/1197079521/34.

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15

Esteban, Christèle. "Etude des procédés utilisables en vue du recyclage de l'eau ultrapure usée dans une usine de micro-électronique." Chambéry, 1999. http://www.theses.fr/1999CHAMS002.

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A Crolles, l'entreprise STMicroelectronics utilise des quantités importantes (68 m#3/h) d'eau de ville pour produire de l'eau dite ultrapure, répondant à des critères de pureté très exigeants. Des raisons économiques et environnementales justifient l'étude du recyclage de cette eau utilisée en rinçage, pour enlever les résidus de produit chimique de la surface des circuits intégrés. Nous avons mis en évidence dans ces eaux la présence d'isopropanol constituant le carbone organique total (COT). L'influence n2gative du COT des eaux de rinçage sur le rendement de fabrication des circuits, nous a

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16

Chan, Raymond. "Interfacial Electrochemistry and Surface Characterization: Hydrogen Terminated Silicon, Electrolessly Deposited Palladium & Platinum on Pyrolyzed Photoresist Films and Electrodeposited Copper on Iridium." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc4432/.

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Hydrogen terminated silicon surfaces play an important role in the integrated circuit (IC) industry. Ultra-pure water is extensively used for the cleaning and surface preparation of silicon surfaces. This work studies the effects of ultra-pure water on hydrogen passivated silicon surfaces in a short time frame of 120 minutes using fourier transform infrared spectroscopy – attenuated total reflection techniques. Varying conditions of ultra-pure water are used. This includes dissolved oxygen poor media after nitrogen bubbling and equilibration under nitrogen atmosphere, as well as metal contamin

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17

Abarkan, Ahmed. "Dialyse verte : comment recycler le rejet de la boucle d’osmose inverse du circuit de préparation de l’eau ultrapure pour les séances d’hémodialyse ?" Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2668.

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La rareté de l'eau est un problème majeur, même en Europe avec les changements climatiques. L'hémodialyse (ou rein artificiel) est une thérapie dont l'impact économique et écologique est élevé, notamment en ce qui concerne la consommation d'eau. Le rejet du système d'osmose inverse (OI) de la boucle de traitement de l'eau est d'environ 250 litres par séance de dialyse. Cette eau légèrement salée est généralement gaspillée. D'après la littérature, très peu de solutions sont proposées pour recycler les effluents hydriques des centres de dialyse. Nous avons donc réalisé une enquête auprès des per

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18

Mässgård, Hampus, and Arvid Jonsson. "An Industrial Perspective on Ultrapure Water Production for Electrolysis : A techno-economic assessment of membrane distillation for electrolysis - synergies, performance, costs, and value propositions." Thesis, KTH, Industriell ekonomi och organisation (Inst.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298250.

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Sustainable development is one of the most important issues in todays’ industrial sector, and several markets are now looking for alternatives to fossil fuels. One of these solutions is hydrogen; a clean, easily combustible gas which can be used as fuel in several industrial processes, such as steel production and power generation. However, the production of green hydrogen is limited, and this is where the need for electrolysis emerges. Electrolysis is a way to produce green hydrogen by separating water into hydrogen and oxygen using energy. One crucial aspect is that this process requires ext

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19

Giovanardi, Samuele. "Sviluppo di un sistema integrato innovativo per la contemporanea produzione e separazione di H2 ultrapuro, attraverso oxy-reforming, water-gas shift e membrane al Pd." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/9963/.

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Il presente lavoro di tesi si è focalizzato sullo studio e sulla ottimizzazione di un sistema integrato, che utilizzi la reazione di oxy-reforming del metano al fine di produrre syngas che venga trattato attraverso la water-gas shift al fine di abbattere il contenuto di CO e al tempo stesso aumentare la resa in H2. Con l’obiettivo di ottenere H2 ad elevata purezza (>99%) da poter essere inviato direttamente a celle a combustible ed in impianti di piccola taglia con possibile delocalizzazione della produzione industriale di energia elettrica e termica “pulita”, la miscela reale uscente dal proc

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20

Schneider, Fabian [Verfasser]. "First steps of the ECHo experiment: Penning-trap mass measurements of the 163Ho electron capture process and implantation of ultrapure Ho into microcalorimeter arrays / Fabian Schneider." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/1104958821/34.

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21

Roth, Estelle. "Détection et modélisation du vieillissement et du colmatage de membranes d'osmose inverse par traitement numérique de signaux issus de traçage par des ions : application à l'étude des membranes FT30-4040 utilisées dans la préparation d'eau ultrapure." Mulhouse, 1998. http://www.theses.fr/1998MULH0528.

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L'étude des performances de modules d'osmose inverse spiralés FT30-4040 intégrés au procédé de traitement d'eau pour dialyse rénale des Hôpitaux de Colmar met en évidence la difficulté de caractériser l'état des membranes. Des expériences de traçage ont donc été réalisées sur ces modules. L'injection de traceur (solutions de NaCl, HCl et NaOH) étant réalisée en amont de la pompe multiétagée, la réponse impulsionnelle du pack membranaire s'obtient par déconvolution grâce au filtre de Kalman du signal expérimental par la fonction d'appareillage mesurée en court-circuitant le pack membranaire. Le

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Wen, Wen-Ming, and 溫文銘. "An UltraPeers Architecture with Distributed Index for File Sharing." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/01053253116756343266.

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碩士<br>中華大學<br>資訊管理學系(所)<br>94<br>The high performance of personal computing equipment, the high speed network bandwidth and the acceptable fee of the network expense impels the recent widespread of network users. Under such a trend, a new network computing model Peer-to-Peer architecture was developed. Unlike the Client/Server architecture, a client can connect other client directly to get a service in Peer-to-Peer architecture. A user does not need to depend on the server solely. Many emerging soft wares use such characteristic to provide personal services to such huge amount of users. For ex

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Lu, Hung-yuan, and 呂宏元. "A Study of FMEA on the Semiconductor Ultrapure Water System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/6xw4d3.

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碩士<br>國立高雄大學<br>電機工程學系碩士班<br>102<br>With advances in semiconductor process, increase of chip complexity, line of miniaturized components, the degree of the influence of the surface particles on functions and reliability of the chips is higher than before. Therefore, each wafer needs to be re-cleaned step to remove surface particles, the purity and pressure of the ultrapure water cleaning process is quite critical. If the water quality is sub-standard or unstable elements, chips will be damaged and the product yield will be decreased. The purpose of this study is to improve the performance of t

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Kumar, Pandey Ashwini. "Kinetic study of ion exchange column operation for ultrapure water application." 2008. http://digital.library.okstate.edu/etd/umi-okstate-2851.pdf.

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Afonso, Diogo Manuel Nobre. "Produção de N2 Ultrapuro por Oxidação de H2O sobre catalisador de Paládio." Master's thesis, 2013. https://repositorio-aberto.up.pt/handle/10216/101392.

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Afonso, Diogo Manuel Nobre. "Produção de N2 Ultrapuro por Oxidação de H2O sobre catalisador de Paládio." Dissertação, 2013. https://repositorio-aberto.up.pt/handle/10216/101392.

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Jiang, Bryan, and 姜智興. "Life Cycle Assessment and Eco-efficiency Analysis of Ultrapure Water System in Semiconductor Industry." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/68805943823324792702.

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碩士<br>國立交通大學<br>工學院永續環境科技學程<br>102<br>Ultrapure water system provides clean water products manufacturing in semiconductor industry, the purpose of this study is the application of life cycle assessment and eco-efficiency to analyze environmental impacts of two different sets of ultrapure water system. In addition, the use of life cycle cost method to analyze their economy and environmental impact is also included. According to the classifications in the Eco-indicator 99, the results shows there are similar impacts caused by two sets of ultrapure water system. The source of major impact is from

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Delduque, Nuno Nóbrega Cortes. "Projeto e construção de uma unidade de reação catalítica para produção industrial de azoto ultrapuro." Master's thesis, 2016. https://hdl.handle.net/10216/89308.

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Huang, Kun-sheng, and 黃坤生. "The Competition and Development Trend of Ultrapure Water Systems - A Case Study of S Corporation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/85050963774140569385.

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碩士<br>國立中山大學<br>高階經營碩士班<br>99<br>The number of applications and the significance of ultrapure water are increasing over time in both traditional and high-tech industries. For ultrapure water treatment and production, two important types of equipments are the green technology with Electrodeionization modules (EDI), and the traditional ion exchange resins with Mixed Beds (MB). Unfortunately, it is a concern that the highly polluting MB technology produces a large volume of waste-water during the regeneration process, but still owns around 90% market share of all ultrapure water systems. By contr

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Delduque, Nuno Nóbrega Cortes. "Projeto e construção de uma unidade de reação catalítica para produção industrial de azoto ultrapuro." Dissertação, 2016. https://hdl.handle.net/10216/89308.

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Liu, Hsu-Chuan, and 劉旭娟. "Ultra-trace analysis of phthalate esters in ultrapure water by a modified solid-phase extraction method." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/hc5e3z.

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碩士<br>國立交通大學<br>環境工程系所<br>93<br>The increasing complexity and miniaturization of modern integrated circuit demand lower defect density in the active region of the silicon devices. This, in turn, necessitates the more stringent control of ultrapure water (UPW) that represents a major source of contamination during the “wet-bench” processes. One of the most potent surface-bound organic families is the phthalate esters, which could easily release from the surface of polymeric materials such as plastic containers and pipes. The current limit of organic contaminants in UPW, normally measured by tot

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Ho, Pei-Chi, and 何珮綺. "Softening pretreatment for waste stream resulted from ultrapure water generation with silica －a case study for TFT-LCD industry." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/dvtmrd.

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碩士<br>國立臺北科技大學<br>環境工程與管理研究所<br>101<br>The wastewater generated from ultrapure water generation process of the TFT-LCD industry factory includes high calcium, magnesium and silica content, which may result in an irretrievable damage on membranes fouling and pretreatment of these impurities are necessary. In this paper, wastewater was tested in standard jar test using softening for removal of silica to discuss in the following five steps：(1) Development of a removal-saturation-recovery curve to determine the threshold limits of RO recovery and silica removal; (2) Determining the effect of silic

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