Готові списки джерел за темами / Degradation

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Добірка наукової літератури з теми "Degradation"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 28 червня 2025

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Статті в журналах з теми "Degradation"

Chen, Sen, Hongying Liu, Chaowei Fang, Fanhua Shang, Yuanyuan Liu, Liang Wan, Dongmei Jiang, and Yaowei Wang. "Unsupervised Degradation Representation Aware Transform for Real-World Blind Image Super-Resolution." Proceedings of the AAAI Conference on Artificial Intelligence 39, no. 2 (April 11, 2025): 2177–85. https://doi.org/10.1609/aaai.v39i2.32216.

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Blind image super-resolution (blind SR) aims to restore a high-resolution (HR) image from a low-resolution (LR) image with unknown degradation. Many existing methods explicitly estimate degradation information from various LR images. However, in most cases, image degradations are independent of image content. Their estimations may be influenced by the image content resulting in inaccuracy. Unlike existing works, we design a dual-encoder for degradation representation (DEDR) to preclude the influence of image content from LR images. This benefits in extracting the intrinsic degradation representation more accurately. To the best of our knowledge, this paper is the first work that estimates degradation representation through filtering out image content. Based on the degradation representation extracted by DEDR, we present a novel framework, named degradation representation aware transform network (DRAT) for blind SR. We propose global degradation aware (GDA) blocks to propagate degradation information across spatial and channel dimensions, in which a degradation representation transform module (DRT) is introduced to render features degradation-aware, thereby enhancing the restoration of LR images. Extensive experiments are conducted on three benchmark datasets (including Gaussian 8, DIV2KRK, and real-world datasets) under large scaling factors with complex degradations. The experimental results demonstrate that DRAT surpasses state-of-the-art supervised kernel estimation and unsupervised degradation representation methods.

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Gupta, Bina, and Himanshu Gupta. "Iron Oxide Mediated Degradation of Mutagen Pyrene and Determination of Degradation Products." International Journal of Environmental Science and Development 6, no. 12 (2015): 908–12. http://dx.doi.org/10.7763/ijesd.2015.v6.720.

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Haskevych, Volodymyr H., Nadiia M. Lemeha, and Yaroslav Y. Vitvitskyi. "Soil-degradation zoning of Lviv Oblast." Journal of Geology, Geography and Geoecology 31, no. 1 (April 3, 2022): 45–58. http://dx.doi.org/10.15421/112205.

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    We propose a scheme of soil-degradation zoning of Lviv Oblast, which comprehensively illuminates the problem of degradation and focuses on regional differences in the manifestation and complexity of dominant degradation processes. The highest taxonomic unit of soil-degradation zoning is the soil-degradation country, which in turn is divided into a soil-degradation zone, province, county and district. This classification is based on the landscape features of the study area, the dominant types and kinds of degradation processes. In accordance with the zoning of Lviv Oblast, we have identified the following soil degradation taxa: 2 countries, 3 zones, 5 provinces, 14 counties and 31 districts. The soil-degradation country of the East European Plain unites two soil-degradation zones: Polissia mixed forests and broad-leaved forest zones. The soil-degradation zone (Polissia mixed forests) is best characterized by the processes of deflation and physical degradations. The processes of water erosion and physical degradation of soils dominate within the soil degradation zone (broad-leaved forest zone). Those zones also manifest pyrogenic and chemical degradations. The Carpathian soil-degradation country within Lviv Oblast (the Ukrainian Carpathian zone) is characterized by the distribution of geo-ecological anomalies, mechanical and physical soil degradations. The complex lithological features and geomorphology of the territory in the context of uneven anthropogenic impact determine the intensity of manifestation of degradation. Disturbing the natural stability of the soil cover in the conditions of the mountainous terrain contributes to the activation of the manifestation of degradation processes of geo-ecological anomalies. The problem of soil degradation in Lviv Oblast in the conditions of long-term, intense, and often consumer-orientated agricultural use is considered one of the most urgent tasks of modern agricultural production, soil science, ecology, land management, and environmental protection in general. In addition to arable land, the soils of the Carpathians are degrading due to excessive and often predatory deforestation, recreation and pressure from tourists. As evidenced by numerous scientific publications and our own research, soils are subject to water and wind erosions, overconsolidation and loss of structure, dehumification, depletion, desiccation and aridisation, pyrogenic degradation, contamination by agrochemicals, domestic and industrial wastes, etc. The status of the soils and land resources of the study area is close to critical.   

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Janoško, I., and M. Čery. "Degradation of animal malodour." Research in Agricultural Engineering 61, Special Issue (June 2, 2016): S60—S66. http://dx.doi.org/10.17221/35/2015-rae.

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Animal waste represents a&nbsp;significant threat to the environment. Degradation of waste from dead animals is in general carried out in specialized facilities (rendering plants) under specific rules and guidelines. In plant proximity, undesirable malodour is usually produced during the combustion process. This odour can be effectively reduced so that it does not negatively affect the environment and society. Degradation of animal waste malodour can be processed in ozonisers, thermal combustion devices or in bio washers. The purpose of this paper is to determine the limits of exhausts that are produced during direct combustion of animal waste malodour. The level of ammonia in the combustion air is dependent on the quality of raw material processed at rendering plants where the measurements were carried out. In order to reduce the economic costs, the use of alternative fuels (animal fat, heavy fuel oil) is recommended.

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Priyanga, U., and M. Kannahi. "Lignin Degradation: A Review." International Journal of Trend in Scientific Research and Development Volume-2, Issue-3 (April 30, 2018): 2374–96. http://dx.doi.org/10.31142/ijtsrd11556.

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Beynon, R. J., and J. S. Bond. "Catabolism of intracellular protein: molecular aspects." American Journal of Physiology-Cell Physiology 251, no. 2 (August 1, 1986): C141—C152. http://dx.doi.org/10.1152/ajpcell.1986.251.2.c141.

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All living cells regulate the content and composition of their resident proteins, but the mechanisms by which this is accomplished are not understood. The process of protein degradation has an important role in determining steady state and fluctuations of protein concentrations in mammalian cells. This process may be regulated by innate properties of the protein substrates, by factors that interact or "brand" proteins for degradation or by the degradative machinery of the cell. For a specific protein, there appears to be a committed step, an irreversible event that leads to rapid and extensive degradation. That initial event may or may not involve 1) proteolysis, 2) a nonproteolytic covalent modification or branding event (e.g., oxidation, ubiquitin conjugation), 3) denaturation or unfolding of the protein, or 4) sequestration. The degradative machinery of cells may either recognize proteins committed to degradation or initiate degradation, but the process must be selective because there is great heterogeneity in the rates of degradation for different proteins of one cell. The degradative process certainly requires proteases, and it is probable that lysosomal and extralysosomal proteases are involved in the catabolism of cellular proteins. We review here briefly what is currently known about the factors that may determine the half-life of a protein in a mammalian cell, the role of the protein substrate and sequestration in the process, the proteolytic and nonproteolytic enzymes that may initiate the degradative process, and the regulation of extensive degradation of proteins in cells.

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I. Prabha, I. Prabha, and S. Lathasree S. Lathasree. "Photocatalytic Degradation Efficiency of Nanoparticle For The Degradation of Azo Dye in Wastewater Effluents." Indian Journal of Applied Research 4, no. 3 (October 1, 2011): 42–44. http://dx.doi.org/10.15373/2249555x/mar2014/13.

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Wang, Yinhuai, Yujie Hu, and Jian Zhang. "Panini-Net: GAN Prior Based Degradation-Aware Feature Interpolation for Face Restoration." Proceedings of the AAAI Conference on Artificial Intelligence 36, no. 3 (June 28, 2022): 2576–84. http://dx.doi.org/10.1609/aaai.v36i3.20159.

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Emerging high-quality face restoration (FR) methods often utilize pre-trained GAN models (i.e., StyleGAN2) as GAN Prior. However, these methods usually struggle to balance realness and fidelity when facing various degradation levels. Besides, there is still a noticeable visual quality gap compared with pre-trained GAN models. In this paper, we propose a novel GAN Prior based degradation-aware feature interpolation network, dubbed Panini-Net, for FR tasks by explicitly learning the abstract representations to distinguish various degradations. Specifically, an unsupervised degradation representation learning (UDRL) strategy is first developed to extract degradation representations (DR) of the input degraded images. Then, a degradation-aware feature interpolation (DAFI) module is proposed to dynamically fuse the two types of informative features (i.e., features from input images and features from GAN Prior) with flexible adaption to various degradations based on DR. Ablation studies reveal the working mechanism of DAFI and its potential for editable FR. Extensive experiments demonstrate that our Panini-Net achieves state-of-the-art performance for multi-degradation face restoration and face super-resolution. The source code is available at https://github.com/jianzhangcs/panini.

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DOĞAN, Mustafa, and Yaşar ALUÇ. "Stentin İn vitro bozunma hızı ve toksik bozunma ürünleri." Uluslararası Muhendislik Arastirma ve Gelistirme Dergisi 14, no. 2 (July 31, 2022): 653–62. http://dx.doi.org/10.29137/umagd.1089249.

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Medical stents are tubes made of a metal or plastic wire mesh. They are inserted into a hollow structure of a body part to keep an anatomic vessel or passageway open. Stents placed in the body can cause toxic effects by releasing metal ions into the body, and can also cause harmful effects on the body by creating corrosion products. In this study, the decomposition rate and release of corrosion products in artificial body fluid (PBS) of a stent sample with a nitinol structure produced for medical purposes were examined. If any metal decomposes in the body, it can endanger human life and can damage the body via heavy metal residues and toxic radical products that accumulate over long periods in the body. An in vitro degradation test was performed according to the standard 10993-13 and metal release values were found after short periods (one month) for nitinol. In the present study, the release values and possible toxic effects of nickel and titanium within the body with long-term intra-body use were examined. By calculating the mass loss caused by degradation, its relationship to heavy metal release inside the body and the possible side effects on human health of heavy metal residues were evaluated. Low metal ion release values of heavy metals resulting from degradation were determined by the ICP-OES device. Physical changes (diameter) in the surface of stent parts were also measured to compare and evaluate with the degradation rates.

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Totsuka, Takuya, Hitoshi Aoki, Fumitaka Abe, Yukiko Arai, Shunichiro Todoroki, Masaki Kazumi, Masashi Higashino, and Haruo Kobayashi. "Bias and 1/f Noise Degradation Modeling of 90 nm n-Channel MOSFETs Induced by Hot Carrier Stress." Key Engineering Materials 698 (July 2016): 100–108. http://dx.doi.org/10.4028/www.scientific.net/kem.698.100.

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The goal of this research is to model the drain current and 1/f noise degradation characteristics of n-channel MOSFETs. In this paper, we present the implementation of hot carrier degradation into drain current equations of BSIM4 model. We show simulation results of the DC drain current degradation, and then 1/f noise voltage density simulation results affected by the drain current degradation. We have extracted BSIM4 model parameters extensively with the measured data including I-V and 1/f noise measurement of our TEGs. Especially for 1/f noise degradation characterizations, the input referred noise has been calculated after extracting the 1/f noise parameter degradations.

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Більше джерел

Дисертації з теми "Degradation"

Spain, Brock Colter. "Controlled degradation." Thesis, Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/spain/SpainB1210.pdf.

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On November 20, 1943 young Higgins landing craft operator Leon Cooper ferried U.S. Marines of the Second Division ashore on the island of Betio, Tarawa Atoll. The Tarawa landing was to be the first American amphibious assault in World War II and at Red Beach it challenged an entrenched force of 5,000 Japanese soldiers. The fighting lasted only seventy-six hours but it remains one of the bloodiest offenses during WWII. Nearly 1,700 Americans died and over 2,000 wounded during the battle at Tarawa. Most of the dead, both American and Japanese alike, were quickly buried in unmarked graves and cemeteries on the island. Since WWII, some American remains have been recovered, accounted for, and returned to the United States. However, the remains of 564 U.S. Marines and countless Japanese soldiers have yet to come home. Several years later... Leon Cooper had returned home and made a life as a computer company executive. Since retiring, the 89 year old Malibu veteran has stumbled upon a new fight in a familiar place. A few years ago he learned of a landfill covering the bodies of his fallen comrades at Red Beach. Outraged he began spending his own money and raising awareness about the build-up of garbage and debris on hallowed ground. His efforts have resulted in nationwide recognition and a documentary, Return to Tarawa: The Leon Cooper Story. However, the ultimate goal has yet to be realized. Leon has made it his last work to clean-up Red Beach. Apart from local and regional governments not cooperating, rising sea levels have also posed a threat to Leon's efforts. With an intending doom dictating the timeline, the clean-up of Red Beach pales in comparison to the relocation of 10,000 natives from their homes in one of the poorest regions on earth. If not addressed the issues at Red Beach will simply be underwater. The moral line made at this juncture divides right from wrong and outlines actions in each. Are mounds of trash atop soldier's remains simply 'out of sight and out of mind'? Or is their trash in our oceans atop forgotten hero's buried at sea? History tells a story of man's inhumanity to man; a tale of war that led men to kill other men for shared principals and the translation of that naivety into a nation dumping trash on a graveyard. It is the goal of this thesis to explore the qualities of humankind that are embodied in a soldiers sacrifice by creating an architecture that controls degrading conditions in spite of certain destruction. This, a municipal waste management facility, chooses to hold the sacrifices of soldiers above their deaths and carries their bodies from the trash into a memoriam that eases trauma into memory while instituting new possibilities, new activities, and new images for a hopeful future.

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Kanungo, Tapas. "Document degradation models and a methodology for degradation model validation /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/5851.

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Johansen, Maren Teresa. "Degradation of Amines." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for kjemi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23201.

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In view of the rising amounts of greenhouse gases in the atmosphere, preventing CO2 emissions has become increasingly important. The combustion of fossil fuels for energy production and transportation is a large contributor to the problem. One of the ways to reduce the amounts of CO2 being released from combustion is carbon capture and storage (CCS). Post-combustion is the capturing method which has been deemed the easiest to apply to existing power plants in a short period of time. Absorption of CO2 by MEA is the most common method used in post-combustion carbon capture, but there are still many aspects of the process that are not fully understood. Understanding the absorption mechanisms will make it easier to make more economical and environmentally friendly choices in the future. In this thesis the oxidative degradation of monoethanolamine (MEA) has been studied using an open batch setup. The stability of MEA has been studied under different temperatures and concentrations of oxygen in the gas stream. These experiments give a matrix of experiments performed at 55, 65 and 75 °C, with oxygen concentrations of 6, 21, 50 and 98% in the gas stream. To monitor how well the experimental results could be trusted, the water balance was maintained throughout the experiments, and the pH was measured in the flasks capturing volatile degradation compounds.To get a detailed picture of the degradation, the weight percent of nitrogen and the CO2 concentration has been found in the end samples, and the alkalinity and MEA concentration was found for all the samples.11 known degradation compounds have been monitored for the different experiments, and the conditions these compounds are formed at have been compared with the suggested reaction mechanisms. 4 of the products were analyzed as anions using Ion chromatography (IC), and 7 secondary reaction products were analyzed as part of a degradation mix in LC-MS. The dependency of these compounds to temperature and oxygen conditions has been discussed. The primary degradation compounds seems to show a more direct correlation to oxygen flow or temperature, while the secondary degradation reaction shows a bigger variation of temperature and oxygen dependency relative to the conditions of the experiments. Various analytical methods for determination of the known compounds were used to determine the concentration of the degradation compounds in the experiments. The accuracy of these methods was investigated, and the results investigated for both LC-MS, GC-MS and IC-EC, showed large variations. Mixing experiments were performed to investigate the unknown mechanism of N-(2-hydroxyethyl) glycine.

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Steele, Carolyn. "Tennis ball degradation." Thesis, Loughborough University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504041.

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Despite anecdotal evidence of changes to tennis ball characteristics and play properties, little research has been directed towards understanding the causes and effects of tennis ball degradation. Improved racket technology and player fitness have contributed to an increase in the speed of the game, yet balls have seen few advancements over the same period. There are several obvious factors contributing to tennis ball degradation: natural pressure loss in pressurised balls, changes to the cloth covering due to court and racket impacts, and precipitation and environmental factors. As recent tennis research has focused on the new balls, there is a need to investigate other ball conditions present in the game of tennis. This thesis provides a structured investigation into the causes and effects of ball degradation, an objective assessment of the effects of degradation on ball performance, and incorporates subjective perceptions of all aesthetics and play properties noted by players. Particular attention is given to ball fuzziness. Excessive fuzziness can occur from manufacturing variability, court and racket interactions, and environmental conditions - though there is currently no standardised method to assess ball surface condition. An objective measure of ball fuzziness has been developed and used in the analysis of nearly 4000 individual ball images. The effects of court and racket impacts, precipitation, natural pressure loss, and repeated impacts have been analysed for their effects on ball degradation. An assessment of ball performance utilised ball impact and aerodynamic data to determine significant differences between balls and develop an improved ball trajectory model.

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Solanky, S. S. "Controlled degradation of diene elastomers: photo-controlled degradation of natural rubber." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2002. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2807.

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Polavarapu, Indira. "Optimal design of an accelerated degradation experiment with reciprocal Weibull degradation rate." [Tampa, Fla.] : University of South Florida, 2004. http://purl.fcla.edu/fcla/etd/SFE0000503.

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Deneke, Carlus. "Theory of mRNA degradation." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2012/6199/.

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One of the central themes of biology is to understand how individual cells achieve a high fidelity in gene expression. Each cell needs to ensure accurate protein levels for its proper functioning and its capability to proliferate. Therefore, complex regulatory mechanisms have evolved in order to render the expression of each gene dependent on the expression level of (all) other genes. Regulation can occur at different stages within the framework of the central dogma of molecular biology. One very effective and relatively direct mechanism concerns the regulation of the stability of mRNAs. All organisms have evolved diverse and powerful mechanisms to achieve this. In order to better comprehend the regulation in living cells, biochemists have studied specific degradation mechanisms in detail. In addition to that, modern high-throughput techniques allow to obtain quantitative data on a global scale by parallel analysis of the decay patterns of many different mRNAs from different genes. In previous studies, the interpretation of these mRNA decay experiments relied on a simple theoretical description based on an exponential decay. However, this does not account for the complexity of the responsible mechanisms and, as a consequence, the exponential decay is often not in agreement with the experimental decay patterns. We have developed an improved and more general theory of mRNA degradation which provides a general framework of mRNA expression and allows describing specific degradation mechanisms. We have made an attempt to provide detailed models for the regulation in different organisms. In the yeast S. cerevisiae, different degradation pathways are known to compete and furthermore most of them rely on the biochemical modification of mRNA molecules. In bacteria such as E. coli, degradation proceeds primarily endonucleolytically, i.e. it is governed by the initial cleavage within the coding region. In addition, it is often coupled to the level of maturity and the size of the polysome of an mRNA. Both for S. cerevisiae and E. coli, our descriptions lead to a considerable improvement of the interpretation of experimental data. The general outcome is that the degradation of mRNA must be described by an age-dependent degradation rate, which can be interpreted as a consequence of molecular aging of mRNAs. Within our theory, we find adequate ways to address this much debated topic from a theoretical perspective. The improvements of the understanding of mRNA degradation can be readily applied to further comprehend the mRNA expression under different internal or environmental conditions such as after the induction of transcription or stress application. Also, the role of mRNA decay can be assessed in the context of translation and protein synthesis. The ultimate goal in understanding gene regulation mediated by mRNA stability will be to identify the relevance and biological function of different mechanisms. Once more quantitative data will become available, our description allows to elaborate the role of each mechanism by devising a suitable model. Ein zentrales Ziel der modernen Biologie ist es, ein umfassendes Verständnis der Genexpression zu erlangen. Die fundamentalen Prozesse sind im zentralen Dogma der Genexpression zusammengefasst: Die genetische Information wird von DNA in Boten-RNAs (mRNA) transkribiert und im Prozess der Translation von mRNA in Proteine übersetzt. Zum Erhalt ihrer Funktionalität und der Möglichkeit von Wachstum und Fortpflanzung muss in jeder Zelle und für jedes Gen die optimale Proteinkonzentration akkurat eingestellt werden. Hierzu hat jeder Organismus detaillierte Regulationsmechanismen entwickelt. Regulation kann auf allen Stufen der Genexpression erfolgen, insbesondere liefert der Abbau der mRNA-Moleküle einen effizienten und direkten Kontrollmechanismus. Daher sind in allen Lebewesen spezifische Mechanismen - die Degradationsmechanismen - entstanden, welche aktiv den Abbau befördern. Um ein besseres Verständnis von den zugrunde liegenden Prozessen zu erlangen, untersuchen Biochemiker die Degradationsmechanismen im Detail. Gleichzeitig erlauben moderne molekularbiologische Verfahren die simultane Bestimmung der Zerfallskurven von mRNA für alle untersuchten Gene einer Zelle. Aus theoretischer Perspektive wird der Zerfall der mRNA-Menge als exponentieller Zerfall mit konstanter Rate betrachtet. Diese Betrachtung dient der Interpretation der zugrunde liegenden Experimente, berücksichtigt aber nicht die fundierten Kenntnisse über die molekularen Mechanismen der Degradation. Zudem zeigen viele experimentelle Studien ein deutliches Abweichen von einem exponentiellen Zerfall. In der vorliegenden Doktorarbeit wird daher eine erweiterte theoretische Beschreibung für die Expression von mRNA-Molekülen eingeführt. Insbesondere lag der Schwerpunkt auf einer verbesserten Beschreibung des Prozesses der Degradation. Die Genexpression kann als ein stochastischer Prozess aufgefasst werden, in dem alle Einzelprozesse auf zufällig ablaufenden chemischen Reaktionen basieren. Die Beschreibung erfolgt daher im Rahmen von Methoden der stochastischen Modellierung. Die fundamentale Annahme besteht darin, dass jedes mRNA-Molekül eine zufällige Lebenszeit hat und diese Lebenszeit für jedes Gen durch eine statistische Lebenszeitverteilung gegeben ist. Ziel ist es nun, spezifische Lebenszeitverteilungen basierend auf den molekularen Degradationsmechanismen zu finden. In dieser Arbeit wurden theoretische Modelle für die Degradation in zwei verschiedenen Organismen entwickelt. Zum einen ist bekannt, dass in eukaryotischen Zellen wie dem Hefepilz S. cerevisiae mehrere Mechanismen zum Abbau der mRNA-Moleküle in Konkurrenz zueinander stehen. Zudem ist der Abbau durch mehrere geschwindigkeitsbestimmende biochemische Schritte charakterisiert. In der vorliegenden Arbeit wurden diese Feststellungen durch ein theoretisches Modell beschrieben. Eine Markow-Kette stellte sich als sehr erfolgreich heraus, um diese Komplexität in eine mathematisch-fassbare Form abzubilden. Zum anderen wird in Kolibakterien die Degradation überwiegend durch einen initialen Schnitt in der kodierenden Sequenz der mRNA eingeleitet. Des Weiteren gibt es komplexe Wechselwirkungen mit dem Prozess der Translation. Die dafür verantwortlichen Enzyme - die Ribosomen - schützen Teile der mRNA und vermindern dadurch deren Zerfall. In der vorliegenden Arbeit wurden diese Zusammenhänge im Rahmen eines weiteren spezifischen, theoretischen Modells untersucht. Beide Mechanismen konnten an experimentellen Daten verifiziert werden. Unter anderem konnten dadurch die Interpretation der Zerfallsexperimente deutlich verbessert und fundamentale Eigenschaften der mRNA-Moleküle bestimmt werden. Ein Vorteil der statistischen Herangehensweise in dieser Arbeit liegt darin, dass theoretische Konzepte für das molekulare Altern der mRNAs entwickelt werden konnten. Mit Hilfe dieser neuentwickelten Methode konnte gezeigt werden, dass sich die Komplexität der Abbaumechanismen in einem Alterungsprozess manifestiert. Dieser kann mit der Lebenserwartung von einzelnen mRNA-Molekülen beschrieben werden. In dieser Doktorarbeit wurde eine verallgemeinerte theoretische Beschreibung des Abbaus von mRNAMolek ülen entwickelt. Die zentrale Idee basiert auf der Verknüpfung von experimentellen Zerfallsmessungen mit den biochemischen Mechanismen der Degradation. In zukünftigen experimentellen Untersuchungen können die entwickelten Verfahren angewandt werden, um eine genauere Interpretation der Befunde zu ermöglichen. Insbesondere zeigt die Arbeit auf, wie verschiedene Hypothesen über den Degradationsmechanismus anhand eines geeigneten mathematischen Modells durch quantitative Experimente verifiziert oder falsifiziert werden können.

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Viger, Marie-Élise. "Photoelectrochemical degradation of ciprofloxacin." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=92310.

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Conventional wastewater treatment plants have been found to only partially degrade pharmaceuticals. As a result, antibiotics have been detected in the aquatic environment, causing an increase in bacteria resistance. In this research a photoelectrochemical reactor with a TiO2-RuO2 working electrode was built to study its possible application for the treatment of antibiotic-containing wastewaters. Ciprofloxacin was chosen as a model antibiotic. Degradation of ciprofloxacin was carried out photocatalitically, electrochemically and photoelectrochemically. All three methods were successful in degrading the antibiotic. However, photoelectrochemical degradation was found to be significantly more efficient than the other two techniques due to a synergetic factor. For instance after one hour at a current of 0.4A for 1mM of ciprofloxacin, photoelectrochemical process degrades 56% while electrochemical and photocatalytic process only degrades 41% and 3% respectively. Overall, it was demonstrated that photoelectrochemical degradation represents possibly a viable method for the treatment of antibiotic-containing industrial wastewaters. Les produits pharmaceutiques sont seulement partiellement dégradés dans les centres de traitement des eaux usées. Des antibiotiques se retrouvent donc dans les ruisseaux et rivières. Leur présence cause une résistance grandissante des bactéries aux traitements antibiotiques. Un réacteur photoélectrochimique avec une électrode RuO2-TiO2 fut construit pour déterminer s'il pouvait être utilisé pour le traitement des eaux usées contenant des antibiotiques. La ciprofloxacine fut choisie comme modèle antibiotique. Les procédés photochimique, électrochimique et photoélectrochimique peuvent tous dégrader la ciprofloxacine. Le meilleur résultat est obtenu avec la dégradation photoélectrochimique grâce à un phénomène synergétique. Par exemple pour la dégradation d'une solution de 1mM de ciprofloxacine avec un courant de 0.4A, le procédé photoélectrochimique dégrade 56% tandis que les procédés électrochimique et photochimique dégradent respectivement 41% et 3%. La dégradation photoélectrochimique s'avère donc prometteuse pour le traitement des eaux usées contenant des antibiotiques.

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Wang, Chun-hung, and 王俊雄. "Land degradation in Wuzhou." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50704485.

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Mason, Francis Gerard. "Bacterial degradation of thiocyanate." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282235.

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Книги з теми "Degradation"

Romanienko, Lisiunia A. Degradation Rituals. New York: Palgrave Macmillan US, 2014. http://dx.doi.org/10.1057/9781137387080.

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Conacher, Arthur J., ed. Land Degradation. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-017-2033-5.

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J, Mayer R., Ciechanover Aaron J, and Rechsteiner Martin, eds. Protein degradation. Weinheim: Wiley-VCH, 2005.

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R, Lal, and Stewart B. A. 1932-, eds. Soil degradation. New York: Springer Verlag, 1990.

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Mayer, R. J., Martin Rechsteiner, and Aaron J. Ciechanover. Protein degradation. Weinheim: Wiley-VCH, 2005.

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Mayer, R. J., Martin Rechsteiner, and Aaron J. Ciechanover. Protein degradation. Weinheim: Wiley-VCH, 2007.

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R, Lal, and Lal, R.10 Stewart, B. A. 1932-, eds. Soil degradation. New York: Springer-Verlag, 1990.

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Mathura, Sanya. Lubrication Degradation Mechanisms. First edition. | Boca Raton : CRC Press, 2021. |: CRC Press, 2020. http://dx.doi.org/10.1201/9781003102274.

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Cacace, Angela M., Christopher M. Hickey, and Miklós Békés, eds. Targeted Protein Degradation. New York, NY: Springer US, 2021. http://dx.doi.org/10.1007/978-1-0716-1665-9.

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Weeraratna, Stanley. Understanding Land Degradation. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-12138-8.

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Частини книг з теми "Degradation"

Kucharz, Eugene J. "Degradation." In The Collagens: Biochemistry and Pathophysiology, 55–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-76197-3_4.

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Gooch, Jan W. "Degradation." In Encyclopedic Dictionary of Polymers, 199. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_3374.

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Hänsch, Wilfried. "Degradation." In Computational Microelectronics, 188–246. Vienna: Springer Vienna, 1991. http://dx.doi.org/10.1007/978-3-7091-9095-1_5.

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Bowman, Dan. "Degradation." In Base-level Impact, 23–32. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24994-5_4.

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Weik, Martin H. "degradation." In Computer Science and Communications Dictionary, 377. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_4621.

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Albertsson, Ann-Christine, and Sigbritt Karlsson. "Polyethylene Degradation and Degradation Products." In ACS Symposium Series, 60–64. Washington, DC: American Chemical Society, 1990. http://dx.doi.org/10.1021/bk-1990-0433.ch006.

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Hershko, Avram. "Brief History of Protein Degradation and the Ubiquitin System." In Protein Degradation, 1–9. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/352760586x.ch1.

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Bochtler, Matthias, Michael Groll, Hans Brandstetter, Tim Clausen, and Robert Huber. "Molecular Machines for Protein Degradation." In Protein Degradation, 248–87. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/352760586x.ch10.

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DeMartino, George N., and Cezary Wojcik. "Proteasome Regulator, PA700 (19S Regulatory Particle)." In Protein Degradation, 288–316. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/352760586x.ch11.

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Hofmann, Kay. "Bioinformatics of Ubiquitin Domains and Their Binding Partners." In Protein Degradation, 318–47. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/352760586x.ch12.

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Тези доповідей конференцій з теми "Degradation"

Li, Xinyi, Xuliang Mao, and kaiyu yang. "The degradation of polymerase: biodegradation, microwave degradation and zeolite degradation." In Eighth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2022), edited by Thanikaivelan Palanisamy and Lim Boon Han. SPIE, 2023. http://dx.doi.org/10.1117/12.2672936.

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Baussaron, Julien, Mihaela Barreau-Guerin, Leo Gerville-Reache, and Paul Schimmerling. "Degradation test plan for Wiener degradation processes." In Integrity (RAMS). IEEE, 2011. http://dx.doi.org/10.1109/rams.2011.5754485.

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Arai, Kohei, and Yasunori Terayama. "Matching Accuracy Degradation Due to MTF Degradation Due to Atmospheric Effect." In Optical Remote Sensing of the Atmosphere. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/orsa.1995.tuc28.

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For DEM estimation with stereo pair of images, a tie point matching is necessary between the two images, Nadir and Off-nadir viewing images. MTF degradations for both Nadir and Off-nadir viewing images are different so that matching accuracy is degraded in accordance with increasing of the off-nadir viewing angle. This proposed paper will discuss a MTF degradation due to atmospheric effect by means of an inverse Monte Carlo simulation together with an associated matching accuracy degradation. Further, a degradation on DEM estimation is also discussed.

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Fernandes, Fábio, Sara Figueiredo, Ana Caetano, Rui Novais, Ricardo Alves de Sousa, and António Pereira. "Cork composites degradation - exposure to ultraviolet." In 1st Corrosion and Materials Degradation Web Conference. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/cmdwc2021-09947.

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Anciaux, Nicolas, Luc Bouganim, Harold van Heerde, Philippe Pucheral, and Peter M. G. Apers. "Data degradation." In Proceeding of the 17th ACM conference. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1458082.1458301.

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Vladescu, Alina, Cosmin Cotrut, Iulian Pana, Elena Ungureanu, and Diana Vranceanu. "Degradation of sputtered hydroxyapatite in different acellular media." In 1st Corrosion and Materials Degradation Web Conference. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/cmdwc2021-09896.

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Xia, Da-Hai. "Atmospheric corrosion detection of field-exposed metallic materials by image recognition." In 1st Corrosion and Materials Degradation Web Conference. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/cmdwc2021-09887.

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Urquidi-Macdonald, Mirna. "Why data mining?" In 1st Corrosion and Materials Degradation Web Conference. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/cmdwc2021-09991.

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Glass, Gareth. "The halo effect and its electrochemical repair in reinforced concrete." In 1st Corrosion and Materials Degradation Web Conference. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/cmdwc2021-09961.

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Kartsonakis, Ioannis. "Advances in smart coatings: classification, improvements and applications." In 1st Corrosion and Materials Degradation Web Conference. Basel, Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/cmdwc2021-09964.

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Звіти організацій з теми "Degradation"

Kicker, Dwayne C. Drift Degradation Analysis. Office of Scientific and Technical Information (OSTI), September 2001. http://dx.doi.org/10.2172/790802.

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Walker, Matthew, Alan Michael Kruizenga, and Elizabeth Ann Withey. Resolving Turbine Degradation. Office of Scientific and Technical Information (OSTI), August 2017. http://dx.doi.org/10.2172/1374697.

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Lambert, D. P., J. R. Zamecnik, D. D. Newell, and M. S. Williams. Antifoam degradation testing. Office of Scientific and Technical Information (OSTI), August 2015. http://dx.doi.org/10.2172/1212659.

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D. Kicker. Drift Degradation Analysis. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/837516.

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Leigh R. Martin and Bruce J. Mincher. TALSPEAK Solvent Degradation. Office of Scientific and Technical Information (OSTI), September 2009. http://dx.doi.org/10.2172/971366.

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G.H. Nieder-Westermann. Drift Degradation Analysis. Office of Scientific and Technical Information (OSTI), April 2005. http://dx.doi.org/10.2172/850431.

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Brady, Patrick, Jeralyn Prouty, and Brady Hanson. Cladding Degradation Model. Office of Scientific and Technical Information (OSTI), April 2022. http://dx.doi.org/10.2172/1865577.

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E. Siegmann and R.P. Rechard. CLADDING DEGRADATION COMPONENT IN WASTE FORM DEGRADATION MODEL IN TSPA-SR. Office of Scientific and Technical Information (OSTI), January 2001. http://dx.doi.org/10.2172/860279.

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Harvey, Steven P. Enzymatic Degradation of HD. Fort Belvoir, VA: Defense Technical Information Center, December 2001. http://dx.doi.org/10.21236/ada400437.

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Kueck, J. D. Valve actuator motor degradation. Office of Scientific and Technical Information (OSTI), December 1994. http://dx.doi.org/10.2172/10104305.

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