Tesi sul tema "Ferrals"

Segui questo link per vedere altri tipi di pubblicazioni sul tema: Ferrals.

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Vedi i top-50 saggi (tesi di laurea o di dottorato) per l'attività di ricerca sul tema "Ferrals".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Vedi le tesi di molte aree scientifiche e compila una bibliografia corretta.

1

Chan, Kui-wai Miranda. "The future of Hong Kong's inter-city ferry passenger services". Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk:8888/cgi-bin/hkuto%5Ftoc%5Fpdf?B23339421.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
2

Kim, Jaclyn. "Christian Ferras and His Struggle with Depression". Thesis, California State University, Long Beach, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10840357.

Testo completo
Abstract (sommario):

Musicians often feel the extremes of highs and lows based on the nature of their work. In order to effectively communicate with an audience, the performer needs to express his or her musical ideas. This form of expression leaves the performer vulnerable, since the audience may either enjoy or disapprove of the performer’s interpretation. With each performance, musicians are evaluated or judged by their peers and audiences as to whether or not they have performed at a level expected. Additionally, to have a successful performance, a musician must put on a good show in order to communicate to the audience. If the performance is not positively received by the audience, the performer may feel ashamed or embarrassed, and may even think that the severe reception reflects the performer’s lack of aptitude as a musician. Furthermore, since musicians dedicate so much of their lives and time to practicing, preparing, and performing, oftentimes their identity revolves around being a successful musician. To speak to the audience successfully, a musician must be vulnerable with his or her performance. However, vulnerability can lead to degradation, and thus, a breakdown of mental health. An unfavorable critique of their performance may also make them feel inadequate as a human and professional. Therefore, musicians often suffer different types of anxiety connected with their performances. Depression is one dominant mental health issue prevalent in many musicians.

Not only is it the professional nature of the musicians’ work that highlights their depression, it is also the creative component of their work that intensifies their depression. Such was the case with Christian Ferras, a French violinist born in 1933. Ferras was considered a prodigy as a violinist and performed with many well known conductors, orchestras, and accompanists. Unfortunately, he battled with his depression throughout his career. Ferras took some time off from performing and teaching from 1967–1975, but ultimately was not able to regain the career that he wanted. In 1982 at the age of forty-nine, Ferras committed suicide by jumping out of his Paris apartment window.

Gli stili APA, Harvard, Vancouver, ISO e altri
3

Kwan, Chui-lan Rachel. "A study of the death of franchise policy for ferry services in Hong Kong". Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B2103803X.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
4

Freitas, Diogo Martins de. "Equity research - Ferrari N.V". Master's thesis, Instituto Superior de Economia e Gestão, 2018. http://hdl.handle.net/10400.5/17354.

Testo completo
Abstract (sommario):
Mestrado em Finanças
O presente relatório de Equity Research tem por objectivo determinar o justo valor da fabricante italiana de supercarros de luxo, Ferrari. Nesse sentido, um preço-alvo para o final do ano de 2018 foi desenvolvido e posteriormente concretizado numa recomendação de investimento, tendo por base o processo de avaliação e o preço actual da acção. A primeira etapa do processo de avaliação compreende uma breve análise macroeconómica da indústria em que a empresa se insere, seguida de uma análise operacional. Posteriormente segue-se um tratamento de dados financeiros fundamentais para o desenvolvimento do modelo de Discount Cash Flow (DCF) e para o modelo de avaliação relativa com em base em Múltiplos. O modelo de Discount Cash Flow (DCF) deriva um preço por acção no final de 2018 de € 121.21. Em contraste, a abordagem via múltiplos é ligeiramente mais conservadora, com um valor-alvo por acção de € 115.36. Em 30 de Junho de 2018, o preço da acção em mercado foi fixado em € 116.50, o que deixa espaço para um potencial de valorização de cerca de 4%, considerando o valor obtido através do modelo DCF. O rendimento futuro dos dividendos é esperado ser de 0.70%. Desde o início do ano, o retorno anual da acção foi de 36%, juntamente com uma volatilidade anual de 31%, valores estes que podem ser explicados em certa medida pela ainda recente IPO e a consequente descoberta de preço pelo mercado.
The present equity research report aims to determine the fair value of the Italian Supercar manufacturer, Ferrari. In that sense, a target price towards the end of 2018 is developed and concretized in an investment recommendation given the outcome of the process of due diligence followed by the respective business valuation. The first step of the valuation process comprehends an analysis of both the industry where the company operates and its operational activity. Subsequently, the assumptions and the forecasted financials are present as they represent the fundamental quantitative data where both the discounted cash flow and multiples valuation models rely on. The discounted cash flow model (DCF) derives a share price towards the end of 2018 of €121.21. By contrast, the multiples approach is slightly more conservative with a share value of €115.36. On 30th of June 2018 the market share price was set at €116.50 which leaves room for an upside potential of about 4% given the DCF target share value. The forward dividend yield is expected to be 0.70%. Since the beginning of the year, the annual stock return averaged 36% with an annual volatility of 31%.
info:eu-repo/semantics/publishedVersion
Gli stili APA, Harvard, Vancouver, ISO e altri
5

Felizardo, Rafael Grilli. "Equity research - Ferrari N.V". Master's thesis, Instituto Superior de Economia e Gestão, 2020. http://hdl.handle.net/10400.5/20808.

Testo completo
Abstract (sommario):
Mestrado em Finanças
Este relatório é uma avaliação da Ferrari N.V., preparada como Projeto de Trabalho Final de Mestrado em Finanças pelo ISEG. O trabalho segue o formato recomendado pelo Instituto CFA. A avaliação foi conduzida considerando dados disponíveis publicamente em 07 de outubro de 2020, e diversas fontes de informação foram utilizadas, como relatórios da empresa, Thomson Reuters, Bloomberg L.P., yahoofinance.com. Novidades após essa data não estão contempladas na análise. O preço alvo de €177.48 (dezembro de 2020) representa um potencial de valorização de 17% em relação ao preço de fechamento de 30 de julho de 2020, e a recomendação para a Ferrari N.V. é COMPRA, com risco médio avaliado.
This report is a valuation of Ferrari N.V. prepared as a Master's in Finance Final Work Project at ISEG, following the format recommended by the CFA Institute for Equity Research reports. The study was conducted considering publicly available data on October 07th, 2020, and diverse sources of information were used, such as company reports, Thomson Reuters, Bloomberg L.P., yahoofinance.com. Novelties after this date were not included. The target price (TP) was achieved based on the DCF method, complemented with Adjusted Present Value, Economic Value Added and Relative Valuation. The TP of €177.48 (2020YE) represents an upside potential of 17% over the close price of July 30, 2020, and the final recommendation for Ferrari N.V. is BUY, with medium risk assessed.
info:eu-repo/semantics/publishedVersion
Gli stili APA, Harvard, Vancouver, ISO e altri
6

Woolley, Benjamin. "The Angel of Ferrara". Thesis, Goldsmiths College (University of London), 2015. http://research.gold.ac.uk/11398/.

Testo completo
Abstract (sommario):
This thesis comprises two components: an extract of The Angel of Ferrara, a historical novel, and a critical commentary entitled What is history doing in Fiction? The novel is set in the Italian city of Ferrara in February, 1579, a jewel of the Renaissance at the height of its powers but deep in debt. Amid the aristocratic pomp and popular festivities surrounding the duke’s marriage to his third wife, the secret child of the city’s most celebrated singer goes missing. A street-smart debt collector and lovelorn bureaucrat help her increasingly desperate attempts to find her son, their efforts uncovering the brutal instruments of ostentation and domination that gave rise to what we now know as the Renaissance. In the critical commentary, I draw on the experience writing The Angel of Ferrara, together with my own historical works, to explore the relationship between history and fiction. Beginning with a survey of the development of historical fiction since the inception of the genre’s modern form with the Walter Scott’s Waverley, I analyze the various paratextual interventions—prefaces, authors’ notes, acknowledgements—authors have used in their attempts to explore and explain the use of factual research in their works. I draw on this to reflect in more detail at how research shaped the writing of the Angel of Ferrara and other recent historical novels, in particular Hilary Mantel’s Wolf Hall. I then examine the issue form the opposite perspective: the use of fictional devices such as narrative in history, considering whether or not this compromises or enhances the authority and validity of historical work. I end by critically examining the prevailing notion that the borderline between fiction and history has become blurred, arguing that, while each influences the other, the distinction is one of type rather than degree.
Gli stili APA, Harvard, Vancouver, ISO e altri
7

Wilson, Andrew David. "Wear and fatigue studies of surface engineered ferrous and non-ferrous aerospace alloys". Thesis, University of Hull, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264952.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
8

Stroe, MIOARA ELVIRA. "Hydrogen embrittlement of ferrous materials". Doctoral thesis, Universite Libre de Bruxelles, 2006. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210889.

Testo completo
Abstract (sommario):
This work deals with the damage due to the simultaneous presence of hydrogen in atomic form and stress – straining.

The aim of this work is twofold: to better understand the hydrogen embrittlement mechanisms and to translate the acquired knowledge into a more appropriate qualification test.

The phenomena of hydrogen entry and transport inside the metals, together with the different types of damages due to the presence of hydrogen, are presented.

The analysis of the most important models proposed up to now for hydrogen embrittlement (HE) indicated that the slow dynamic plastic straining is a key factor for the embritteling process. There is a synergistic effect of hydrogen – dislocations interactions: on one hand hydrogen facilitates the dislocations movement (according to the HELP mechanism) and on the other hand dislocations transport hydrogen during their movement when their velocity is lower than a critical value.

This work is focused on supermartensitic stainless steels, base and welded materials. The interest on these materials is due to their broad use in offshore oil production.

First, the material’s characterisation with regards to hydrogen content and localisation was performed. This was conducted in charging conditions that are representative of industrial applications.

Because of previous industrial experience it was necessary to find a more appropriate qualification test method to asses the risk of HE.

In this work we proposed the stepwise repeated slow strain rate test (SW R – SSRT) as a qualification test method for supermartensitic stainless steels.

This test method combines hydrogen charging, test duration, plastic, dynamic and slow strains. Thus, this test method is coherent with both the model HELP proposed for hydrogen embrittlement and the observations of industrial failures.

The stepwise repeated slow strain rate test (SW RSSRT) is interesting not only as a qualification test of martensitic stainless steels, but also as a qualification test of conditions for using these materials (type of straining, range of strain and stress, strain rate, hydrogen charging conditions, etc.).

Ce travail se rapporte à l’endommagement provoqué par la présence simultanée de l’hydrogène sous forme atomique et une contrainte (appliquée où résiduelle).

Ce travail a comme but une meilleure compréhension du mécanisme de la fragilisation par l’hydrogène (FPH) et la recherche d’un essai de qualification qui soit cohérent avec ce mécanisme.

Les phénomènes liés à l’entrée et au transport de l’hydrogène au sein des métaux, ensemble avec les différents types d’endommagements dus à la présence de l’hydrogène, sont présentés.

L’analyse des modèles proposés jusqu’au présent pour la fragilisation par l’hydrogène (FPH) suggère que la déformation lente plastique dynamique est le facteur clé pour le processus de la fragilisation. Il y a un effet synergétique des interactions entre l’hydrogène et les dislocations: d’un coté l’hydrogène facilite le mouvement des dislocations (d’après le modèle HELP) et d’un autre coté les dislocations transportent l’hydrogène pendant leur mouvement, pourvu que leur vitesse soit en dessous d’une valeur critique.

Le travail a été conduit sur des aciers supermartensitiques, matériau de base et soudé. L’intérêt pour ces matériaux réside de leur large utilisation dans la production du pétrole en offshore.

D’abord, le matériau a été caractérisé du point de vu de la teneur et de la localisation de l’hydrogène. Les essais ont été conduits dans des conditions représentatives pour les cas industriels.

L’expérience industrielle d’auparavant indique qu’il est nécessaire de trouver un test de qualification plus approprié pour estimer la susceptibilité à la fragilisation par l’hydrogène.

Dans ce travail on propose un essai de traction lente incrémentée (SW R – SSRT) comme méthode de qualification pour les aciers supermartensitiques.

L’essai combine le chargement en hydrogène, la durée d’essai, la déformation lente, plastique et dynamique. Donc, cette méthode d’essai est cohérente avec le modèle HELP proposé pour FPH et les observations des accidents industriels.

Cet essai est intéressant pas seulement comme essai de qualification pour les aciers supermartensitiques, mais aussi comme essai de qualification pour les conditions d’utilisation des ces matériaux (type de déformation, niveau de déformation et contrainte, vitesse de déformation, conditions de chargement en hydrogène, etc.).


Doctorat en sciences appliquées
info:eu-repo/semantics/nonPublished

Gli stili APA, Harvard, Vancouver, ISO e altri
9

Taylor, Keith Allen. "Aging phenomena in ferrous martensites". Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15219.

Testo completo
Abstract (sommario):
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1985.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.
Vita.
Includes bibliographical references.
by Keith Allen Taylor.
Sc.D.
Gli stili APA, Harvard, Vancouver, ISO e altri
10

Giorgi, Artur de Vargas. "Ferreira, Ferrari: ficções do exílio". reponame:Repositório Institucional da UFSC, 2015. https://repositorio.ufsc.br/xmlui/handle/123456789/136476.

Testo completo
Abstract (sommario):
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Literatura, Florianópolis, 2015.
Made available in DSpace on 2015-11-17T03:07:57Z (GMT). No. of bitstreams: 1 336364.pdf: 12679273 bytes, checksum: 8477ae90ae03785504bbebbc18bbd341 (MD5) Previous issue date: 2015
Esta é uma leitura dos exílios de Ferreira Gullar e León Ferrari, durante as últimas ditaduras militares que tomaram conta do Cone Sul, incluindo Brasil e Argentina. Entre 1971 e 1977, Gullar passou por Moscou, Santiago, Lima e Buenos Aires, além de outras cidades, enquanto Ferrari, por sua vez, estabeleceu-se com sua família em São Paulo do final de 1976 até 1984, sendo que após esse período ainda dividiria por alguns anos a sua permanência entre a capital paulista e Buenos Aires. Alguns de seus mais notáveis trabalhos foram realizados no exílio, de modo que a configuração de uma paisagem ou cena exílica torna-se indissociável das experiências conduzidas com a linguagem. Em poucas palavras: embora marcado pela tanatopolítica castrense e pelo nomos gestor do capital global, é possível afirmar que o exílio não está dado de antemão e nem permanece sempre o mesmo, quer seja como dano ou como dádiva; é somente com a linguagem  a imagem, o sensível  que uma experiência exílica, sempre singular e radicalmente contemporânea, pode encontrar a sua superfície de exposição, quer dizer, a sua diferença. Conquanto sejam profundamente dessemelhantes, os exílios de Ferreira Gullar e León Ferrari não deixam de mostrar afinidades, sobretudo nos momentos em que suas experiências tocam um ponto comum: o espaço  um topos  a-tópico da impropriedade, da potência, da in-operatividade que, com a linguagem, resiste indomesticável às tentativas de cristalização da língua, do povo, do poder, da nação. Foucault, Saer, Coccia e outros autores franqueiam um pensamento da ficção enquanto construção contingencial capaz de desnaturalizar os usos do discurso e a teleologia que assedia constantemente a literatura, as artes, a história. De certo modo, a ficção ¬repete, expõe e portanto difere as fábulas, ao mesmo tempo em que expõe e difere a si mesma. É essa operação in-operante, esse trabalho afirmativo da negatividade que suspende a maquinaria imunitária, autonomista, da civilização ocidental e cristã.

Abstract : This is a reading of both Ferreira Gullar and León Ferrari s exiles, during the last military dictatorships that took account of the Southern Cone, including Brazil and Argentina. Between 1971 and 1977, Gullar went through Moscow, Santiago, Lima and Buenos Aires, and other cities, while Ferrari settled with his family in São Paulo from late 1976 until 1984, and thereafter still divided for a few years his stay between São Paulo and Buenos Aires. Some of his most notable works were carried out in exile, so that the configuration of an exilic landscape or scene becomes inseparable from experiments conducted with language. In short, although marked by military thanatopolitics and the nomos of global capital manager, it is possible to say that exile is not given in advance and not always remains the same, whether as damage or as a gift; it is only with the language  the image, the sensible  that an exilic experience, always singular and radically contemporary, can find its exposure surface, that is, its difference. While they are profoundly dissimilar, Ferreira Gullar and León Ferrari s exiles show their affinities, particularly at times when their experiences play a common point: the space  a topos  a-topic of the impropriety, potency, of in-operativity that, together with language, resists untamable against all crystallization attempts on the idiom, people, power, and nation. Foucault, Saer, Coccia and other authors frank a thought of fiction as a contingency construction able to denature the uses of speech and the teleology that constantly haunts literature, arts, and history. In a way, fiction repeats, exposes and therefore differs fables, while exposes and differs itself. It is this in-operative operation, this affirmative work of negativity that suspends the immunitary machinery of Christian Western civilization.
Gli stili APA, Harvard, Vancouver, ISO e altri
11

Salib, Prisca. "Ermanno Wolf-Ferrari - Der Schmuck der Madonna eine veristische Oper?" Tutzing Schneider, 2009. http://d-nb.info/997776129/04.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
12

Leung, Pak-kan Gary. "New China Ferry Terminal". Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25947308.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
13

Magoni, Clizia. "I gigli d'oro e l'aquila bianca gli Estensi e la corte francese tra '400 e '500: un secolo di rapporti /". Ferrara : Deputazione provinciale ferrarese di storia patria, 2001. http://catalog.hathitrust.org/api/volumes/oclc/51877590.html.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
14

GIOVACCHINI, PIERRE. "Dermato-fibro-sarcome de darier et ferrand : diagnostic, evolution et principes therapeutiques ; a propos de 12 cas". Aix-Marseille 2, 1989. http://www.theses.fr/1989AIX20204.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
15

Yeung, Yui-hong Abel. "Ferry services in Hong Kong opportunities and constraints /". Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38388716.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
16

BARBIER, ERIC. "Le dermatofibrosarcome de darier et ferrand de l'enfant : a propos d'un cas". Angers, 1994. http://www.theses.fr/1994ANGE1059.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
17

Penelaud, Philippe. "Le dermatofibrosarcome de Darier et Ferrand : à propos d'un cas de localisation faciale". Bordeaux 2, 1988. http://www.theses.fr/1988BOR25019.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
18

Davis, Joseph P. "Electronic Interface for an Inductive Wear Debris Sensor for Detection of Ferrous and Non-Ferrous Particles". University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1380998832.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
19

Norton, Seth Jason. "Ferrous friction stir weld physical simulation". Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1143252009.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
20

Rios, Andrea. "DEWATERING OF BIOSOLIDS BY SODIUM FERRATE". Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2887.

Testo completo
Abstract (sommario):
This study was conducted to evaluate the effectiveness of the liquid form of ferrate for dewatering of biosolids from wastewater treatment facilities. Two different ferrate products prepared using calcium hypochlorite and sodium hypochlorite were used. Samples of anaerobic digested sludge and waste activated sludge with solids content of 2.1% and 0.95 %, respectively were conditioned with both products to evaluate and compare their effectiveness. Centrifugation and filtration of the sludge after conditioning were used. For centrifugation the volume reduction and the turbidity of the supernatant after centrifugation were evaluated. For filtration, the Capillary Suction Time test was used. The optimum doses and conditions for dewatering of the sludge using ferrate were determined for each type of sludge. The centrifugation and filtration results were compared with those obtained for polymer doses currently used at the wastewater treatment plants where the samples were collected and with ferric coagulants as well. The results of this research indicated that optimum pH was 7.0. The time required to achieve mechanical equilibrium defined as the time at which the volume occupied by the solids was no more than one percent of the preceding reading was 1800 seconds for both types of sludge. The optimum rotational speeds were 800 and 2400 for waste activated sludge and anaerobic digested sludge, respectively. The optimum ferrate dose for anaerobic digested sludge for centrifugation and filtration was 5000 mg/l. For waste activated sludge a dose of 10 mg/l was found to be effective for filtration and centrifugation. The results indicated that the ferrate product prepared using calcium hypochlorite provides better results for the waste activated sludge than the ferrate prepared using sodium hypochlorite, while for anaerobic digested sludge no significant difference was observed. Finally, the results show that ferrate is a cost-effective alternative for the conditioning and disinfection of waste activated sludge, but not for the conditioning of anaerobic digested sludge.
M.S.Env.E.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Environmental Engineering
Gli stili APA, Harvard, Vancouver, ISO e altri
21

Lillistone, Duncan. "Non-ferrous compositely reinforced concrete columns". Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364791.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
22

Huang, Yaping. "Organic Coatings to Protect Ferrous Structures". Diss., North Dakota State University, 2013. https://hdl.handle.net/10365/27125.

Testo completo
Abstract (sommario):
Corrosion induces damages that can result in enormous costs and safety issues. Steels are the most commonly used metallic structural materials but they can corrode rapidly when exposed to corrosive environments and need to be protected. The thesis research focuses on two aspects of steel protection. The first aspect is using barrier protection mechanism to protect steel pipeline structures in the presence of Super-Critical CO2. The second aspect is improving cathodic protection of steels by metal rich coatings in ground vehicles, bridges, water tanks, and other structures. In part one, coatings for protection of steel pipeline used for carbon transportation in the form of supercritical carbon dioxide were examined. Pipeline coatings serve to protect pipelines by maintaining their integrity and to increase their service time. Different pipeline coatings with the exposure to SCCO2 have been examined, and these results will be presented here. Different parameters, such as the thickness of coatings, the exposure temperature and pressure, and the exposure time as they affect pipeline coating were investigated and will be described. In the second part of this thesis research, the addition of magnesium particles to the standard zinc particles as metal rich primer was examined for the improvement of current zinc rich coatings to serve as protection for metal substrates in Army ground vehicles. Optimization of primer formulation, such as ratio of Mg and Zn, was investigated. The test primers were exposed in accelerated weathering tests, including ASTM B117 salt spray method and ProhesionTM cycle test as part of this research. The results have been compared with the behavior of the current commercial zinc rich primers to identify the improvements in the protection of the steel with mixed metal systems. For both investigations, electrochemical impedance spectroscopy was mainly used to examine coating performance. Other tests, including color measurement, thickness measurement, X-ray diffraction measurements, and pH measurements, were used to examine the corrosion behavior of steel structures under different corrosive environments. Results showed that coating systems can protect ferrous structures in ways of barrier protection and cathodic protection and can be improved by the application of modern methods and equipment.
Department of Energy
North Dakota State University. Department of Coatings and Polymeric Materials
Gli stili APA, Harvard, Vancouver, ISO e altri
23

Julian, Poranee K. "Geometric Properties of the Ferrand Metric". University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353088820.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
24

Fratani, Dominique. "Le "Mambrien" du Cieco de Ferrare". Paris 10, 1996. http://www.theses.fr/1996PA100112.

Testo completo
Abstract (sommario):
Poete mineur des xveme-xvieme siecles italiens, entre boiardo et arioste, le cieco semble avoir travaille essentiellement pour une cour secondaire des gonzague et sans doute pour les este. La seule oeuvre qui nous soit parvenue de lui est le mambrien, roman chevaleresque probablement compose entre 1490 et 1502, qui a connu un fort succes commercial. En depit d'une apparente dichotomie entre premiere et deuxieme partie, l'oeuvre se presente de facon relativement structuree et son analyse met en evidence a la fois une grande dependance de la rhetorique canterina et une certaine imitation de boiardo. Le point fort du roman est constitue par l'insertion dans la trame guerriere de nouvelles clairement erotico-comiques qui contribuent a alleger la narration, par un effet calcule de variatio. En depit de l'insertion de metaphores grivoises et d'un processus de rabaissement des personnages parfois parodique, par rapport a la tradition, le roman se veut volontiers moralisateur; c'est meme la une de ses caracteristiques dominantes. Au demeurant, son succes au xvieme siecle est tel que, un peu plus tard, de grands poetes comme l'arioste et le tasse ne dedaignent pas de s'en inspirer. Pour toutes ces raisons, le cieco marque une veritable etape dans l'evolution du roman chevaleresque entre boiardo et l'arioste
Minor poet of the fifteenth-sixteenth century between boiardo and ariosto, the cieco seems to have worked principally for a gonzague's secondary court and may be for the este. His only one work which remains today is the mambriano, chivalric poem probably written between 1490 and 1502, which has had a great commercial success. In spite of an apparent difference between the first and the second part, the poem appears relatively structured, and its analysis shows both a great dependance from the rhetoric canterina and an imitation of boiardo. For a part the interest of this poem lies in the insertion in the warrior adventures of some short stories, clearly erotics and comicals, which contribute to lighten the narration with a calculated effect of variatio. In spite of the insertion of saucy metaphor and of a process of reduction for the characters in relation to the tradition, the poem is willingly moralizing; and it is one of its principals characteristics. For all that, its success during the sixteenth century is so important that, later, great poets like ariosto and tasso will draw one's inspiration from some episodes of the mambriano. For all these reasons, the cieco marks a real stage in the chivalric poem's evolution between boiardo and ariosto
Gli stili APA, Harvard, Vancouver, ISO e altri
25

Stefanek, Andrew. "Quantitative Purchasing Structure for Ferrous Scrap". Thesis, The George Washington University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=13422757.

Testo completo
Abstract (sommario):

The majority of steel manufacturers within the United States have employed electric arc furnaces (EAFs), which melt raw materials, for the production of steel. The raw material used in EAFs is referred to as steel, or ferrous, scrap. There are many different grades of ferrous scrap, which are classified by the following attributes: size, density, and chemistry weight percentages of residual elements. Methods currently applied to assess the price of ferrous scrap employ qualitative measures. Furthermore, the largest unknown when procuring ferrous scrap is the chemistry weight percentages of residual elements. This attribute is the most critical to the steel manufacturer as it affects the quality of steel. The goal of the research conducted for this praxis was to create a pricing model that predicted the value-in-use price of ferrous scrap per supplier using a quantitative purchasing structure. The solution to this problem was attained through a pricing model. As this research was applied, the pricing models developed during this research are readily available for use within the steel industry. Results from the pricing models displayed a significant improvement in predicting the value-in-use ferrous scrap price over the current procurement process used by the steel manufacturer.

Gli stili APA, Harvard, Vancouver, ISO e altri
26

Resende, Juliana Dalia. "Degradação de 2,4-diclorofenol em solução aquosa por meio de processo fotoquímico solar". Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-31052011-161350/.

Testo completo
Abstract (sommario):
O 2,4-diclorofenol (2,4-DCF), poluente modelo usado neste trabalho, é um composto empregado na produção de pesticidas, herbicidas e anti-sépticos, e comumente encontrado em efluentes industriais, sendo considerado um poluente prioritário devido a sua elevada toxicidade e alto poder de persistência no ambiente. Este trabalho objetivou estudar a degradação do 2,4-DCF em reator fotoquímico tubular com coletores parabólicos compostos (CPC) irradiado pelo Sol, operado em batelada com recirculação e admissão contínua de peróxido de hidrogênio à vazão de 11 mL min-1. A oxidação do poluente foi baseada no processo foto-Fenton catalisado por tris(oxalato) ferrato(III) (FeOx), investigando-se os efeitos das seguintes variáveis: concentração inicial de 2,4-DCF ([2,4-DCF] = 21-520 mgCL-1), concentrações de oxidante ([H2O2] = 9,9-130 Mm) e de fotocatalisador ([FeOx] = 0,2-1,8 mM) e área de coleta de fótons (0,196-0,98 m2), estudadas a partir de um planejamento Doehlert em múltiplos níveis. A foto-oxidação foi monitorada por medidas da concentração de carbono orgânico total (TOC) e oxigênio dissolvido (OD), tendo sido identificadas condições com remoção de TOC alcançando 99,8% em 90 minutos de tratamento. Nas análises estatísticas dos resultados, os efeitos da área de coleta de fótons e da concentração de H2O2 concordaram com o comportamento esperado, sugerindo, porém, efeitos sequestradores de radicais hidroxila quando a concentração de H2O2 é alta. A partir dos dados experimentais, obteve-se um modelo de redes neurais, usado para previsão da taxa de remoção de TOC em função do tempo. Através do método HIPR (Holdback Input Randomization Method) e dos pesos associados a cada variável de entrada da rede neural, avaliou-se a importância relativa das variáveis de entrada. De maneira geral, os resultados comprovaram a viabilidade do processo foto-Fenton catalisado por tris(oxalato) ferrato III e irradiado pelo Sol para o tratamento de efluentes aquosos contendo 2,4-diclorofenol.
2,4-dichlorophenol (2,4-DCF), the model pollutant selected in this work, is a compound used in the production of pesticides, herbicides, antiseptics, and commonly found in industrial wastewaters. It is considered a priority pollutant due to its high toxicity and high persistence in the environment. This study investigated the degradation of 2,4-DCF in a tubular photochemical reactor with compound parabolic collectors (CPC) irradiated by the sun, operated in batch with recirculation and continuous feed of hydrogen peroxide at a flow rate of 11 mL min-1. The oxidation of the pollutant was based on the photo-Fenton process catalyzed by tris (oxalate) ferrate (III) (FeOx). The effects of the following variables were investigated: initial concentration of 2,4-DCF ([2,4-DCF] = 21-520 mgCL-1), concentrations of oxidant ([H2O2] = 9,9-130 Mm)); photocatalyst ([FeOx]= 0,2-1,8 mM)), and photon collection surface (0,196-0,98 m2), according to a Doehlert design on multiple levels. The photo-oxidation was monitored by measurements of the concentration of total organic carbon (TOC) and dissolved oxygen (OD). Conditions with TOC removal achieving 99.8% within 90 minutes of treatment were identified. The statistical analysis of the results showed that the effects of photon collection area and the concentration of H2O2 agreed with the expected behavior, but suggests scavenging effects of hydroxyl radicals when the concentration of H2O2 is high. From the experimental data, a model of neural networks was obtained and used to predict the rate of TOC removal with time. Using the method HIPR (Holdback Input Randomization Method) and the weights associated with each input variable to the neural network, the relative importance of input variables was determined. Overall, the results proved the feasibility of photo-Fenton process catalyzed by tris(oxalate) ferrate III and irradiated by the sun, for the treatment of aqueous effluents containing 2,4-dichlorophenol.
Gli stili APA, Harvard, Vancouver, ISO e altri
27

Prithiraj, Alicia. "Corrosion behaviour of ferrous and non-ferrous alloys exposed to sulphate - reducing bacteria in industrial heat exchangers". Thesis, Vaal University of Technology, 2018. http://hdl.handle.net/10352/433.

Testo completo
Abstract (sommario):
M.Tech. (Department of Chemical Engineering, Faculty of Engineering and Technology), Vaal University of Technology
Corrosion responses of some carbon steels, stainless steel and copper alloys in the presence of a culture of bacteria (referred to as SRB-Sulphate-reducing bacteria) found in industrial heat exchangers, was studied to recommend best alloys under this service condition, with techno-economic consideration. Water from cooling towers in three plants in a petrochemical processing complex were analysed for SRB presence. Two of the water samples showed positive indication of SRB presence. The mixed cultures obtained from plant one were grown in prepared media and incubated at 35 °C for 18 days. Potentiodynamic polarisation studies in anaerobic conditions were done on the selected alloys in aqueous media with and without the grown SRB. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were then used to study the corrosion morphology and corrosion products formation. The voltamograms show higher icorr for alloys under the SRB compared to the control media, indicating the SRB indeed increased the corrosion rates. The surface analysis showed pitting on steel alloy ASTM A106-B. Localised attack to the grain boundaries on a selective area, was seen on ASTM A516-70 dislodging the grains, and intergranular corrosion was seen throughout the exposed area of ASTM A179. Copper alloys showed pitting on ASTM B111 grade C71500 (70-30), and denickelification on ASTM B111 grade C70600 (90-10), and is a good alternative material for use apart from carbon steel alloys, recording a low corrosion rate of 0.05 mm/year. The EDS analysis supported the findings showing higher weight percent of iron and sulphur on surface of the alloys after exposure to the SRB media. This implies that the presence of the sulphur ion indeed increased the corrosion rate. ASTM A516-70 carbon steel was chosen as a suitable alternative material to the stainless steel in this environment. The Tafel plot recorded a corrosion rate of 1.08 mm/year for ASTM A516-70 when exposed to SRB media.
Gli stili APA, Harvard, Vancouver, ISO e altri
28

Wong, Ho-wah. "The future role of ferry services in Hong Kong /". Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19906249.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
29

Guzmán, Zorrilla Emanuel Jesús. "Modelamiento de corrientes superficiales inducidas por viento y marea en la bahía Ferrol - Chimbote". Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2006. https://hdl.handle.net/20.500.12672/2535.

Testo completo
Abstract (sommario):
Se realizaron simulaciones numéricas del patrón de corrientes superficiales forzados por viento y marea en la bahía Ferrol – Chimbote, con el objetivo determinar la influencia de dichas forzantes, dando así un diagnóstico del patrón de corrientes que servirá como contribución a la evaluación de recambio de aguas y su influencia en el proceso de contaminación en la bahía. El modelo numérico empleado fue el Princeton Ocean Model, más conocido por la comunidad científica internacional como modelo POM. Las simulaciones realizadas fueron de carácter bidimensional, debido a que la bahía presenta características de aguas poco profundas, con una profundidad máxima de 30 metros dentro de la bahía. Se emplearon datos de batimetría y del perfil costero con alta resolución de las cartas de navegación de la Dirección de Hidrografía y Navegación (DHN), complementados con datos globales disponibles de bases de datos digitales (ETOPO2) e información de satélites. Para las simulaciones con viento, se empleó la climatología elaborada por el Internacional Research Institute (IRI). Para simular la corriente de marea, se empleó como forzante los principales constituyentes armónicos de marea obtenidos del modelo global TOPEX6.0, los cuales fueron comparados con las predicciones de marea publicadas en Internet por la DHN. Los resultados obtenidos, nos muestran la influencia del viento y la marea en la generación de corrientes, concluyendo que debido a la configuración morfológica de la bahía, la circulación que se presenta es muy lenta y que la marea ejerce mayor influencia en la circulación dentro de la bahía Ferrol, mientras que la influencia del viento es notoria fuera de la bahía.
Tesis
Gli stili APA, Harvard, Vancouver, ISO e altri
30

Mai, Si Hai. "Etude de dégradation des voies ferrées urbaines". Phd thesis, Université Paris-Est, 2011. http://pastel.archives-ouvertes.fr/pastel-00659068.

Testo completo
Abstract (sommario):
Ce travail réalisé dans le cadre d'une collaboration industrielle avec la société ALSTOM Transport porte sur l'étude de la dégradation des voies ferrées urbaines. Les composantes de voie retenus pour cette étude sont le rail et la dalle de voie en béton. Concernant le rail, différents problèmes sont abordés : contact roue - rail, usure du rail, usure ondulatoire du rail, et fatigue de contact de roulement (RCF) du rail. Un outil numérique avec des interfaces graphiques, nommé CONUS, est développé pour le problème de contact roue - rail et le problème d'usure du rail. Des théories classiques (Hertz, Kalker, Archard, etc.) sont implantées dans cet outil. La méthode stationnaire est implantée dans un code de calcul par éléments finis pour étudier l'état asymptotique de l'acier du rail sous le chargement répété des trains. Ceci nous permet de prédire les régimes de RCF du rail. La mécanique de l'endommagement est utilisée pour prédire la fatigue du matériau béton. Le formalisme de Marigo couplé avec le modèle d'endommagement de Mazars permet de modéliser la dégradation progressive de la rigidité du matériau sous chargement cyclique. Une campagne d'essais de fatigue du béton en flexion a été réalisée. Elle a pour but de valider le modèle théorique et d'identifier les paramètres du matériau. Le dimensionnement d'une dalle de voie en béton a fait l'objet d'une application de cette méthode. Le modèle de réseau de poutres (lattice model) a été utilisé pour étudier la propagation des fissures dans les structures en béton. Ce modèle a été implanté dans le logiciel de calcul par éléments finis, CESAR-LCPC. Les résultats numériques (propagation de fissures) obtenus pour les structures simples sous chargement statique sont en tout point comparables avec les résultats d'essais expérimentaux. Ce modèle a ensuite été utilisé pour étudier la fissuration sous chargement de fatigue. Pour cela un modèle d'endommagement simple modélisant la dégradation des éléments "poutres" s'est avéré suffisant pour décrire la cinématique de propagation des fissures
Gli stili APA, Harvard, Vancouver, ISO e altri
31

Brancher, Vantoir Roberto. "HELENA FERRARI TEIXEIRA: ENTRE SABERES E REPRESENTAÇÕES". Universidade Federal de Santa Maria, 2006. http://repositorio.ufsm.br/handle/1/7013.

Testo completo
Abstract (sommario):
This dissertation inserts itself in the line of "Formation, knowledge and professional Development" in the PPGE - Program of Post-Graduation in Education of the UFSM - Federal University of Saint Maria. In this work, I considered myself to know the knowledge and the representations, of Helena Ferrari Teixeira, councilman and operating teacher in the decade of 40, in the city of Saint Maria. To know and to analyze the History of Life of this singular teacher, of significant importance for the History of the Women in Brazil, the Education and the Politics had been some of the objectives of this research. To (re)construct its History, I used the Biographical Method Histories of Life, in the Verbal modality, basing itself, also, in other forms of documentation such as periodicals, photographs, depositions and other carried through research already. Of this inquiry, first, had resulted some interviews with the main personage and the collaborators, who had passed for an analytical work, to the light of theoretical referential in the thematic of Sort, memory, Verbal History, Knowledge etc. The (re)construction of the Life History of Helena Ferrari Teixeira, the first woman in Santa Maria in Legislature, was realized also, through interviews with five of its former-pupils. I found in the familiar and/or public archives a significant number of documents and photographs of the teacher, which minutely had been also systemized by me. My work was finished with the production of this composed dissertation for five chapters where, at a first moment, I present the ways that I covered for the arrival to the searched subject, later, I talk with some authors, demonstrating the reason of determined choices in the collection and analysis of the data and in the proper construction of the work. In the following chapter I pass through the quarrel of [re]construction of Histories of Life, having as collaborating and citizen-source people of the third age. And, the sequential chapters, I went deep in the History of Life, properly said, of Helena Ferrari Teixeira, composing this production through its own staffs and professionals. Being thus, I believe that to the look to the knowledge of the professors of a time provided to me to a new signification of other times and lived spaces and meanings for me today. From this, I believe that, looking at the daily knowledge of the professors can, and is, showing itself as one more excellent alternative in the production and/or new signification of the professors knowledge and practical.
Esta dissertação se insere na linha de Formação, Saberes e Desenvolvimento profissional no PPGE Programa de Pós-Graduação em Educação da UFSM Universidade Federal de Santa Maria. Nesse trabalho, propus-me conhecer os saberes e as representações, de Helena Ferrari Teixeira, vereadora e professora atuante na década de 40, na cidade de Santa Maria. Conhecer e analisar a História de Vida desta professora singular, de significativa importância para a História das Mulheres no Brasil, na Educação e na Política foram alguns dos objetivos desta pesquisa. Para (re)construir sua História, utilizei o Método Biográfico Histórias de Vida, na modalidade Oral, alicerçando-se, também, em outras formas de documentação tais como jornais, fotografias, depoimentos e outras pesquisas já realizadas. Dessa investigação, primeiramente, resultaram algumas entrevistas com a personagem principal e com as colaboradoras, que passaram por um trabalho analítico, à luz de referenciais teóricos nas temáticas de Gênero, Memória, História Oral, Saberes etc. A (re)construção da História de Vida de Helena Ferrari Teixeira, a primeira mulher do Legislativo Santa-Mariense, foi realizada ainda, através de entrevistas com cinco de suas ex-alunas. Encontrei nos arquivos familiares e/ou públicos um número significativo de documentos e fotografias da professora, que também foram minuciosamente sistematizados por mim. Meu trabalho finalizou-se com a produção desta dissertação composta por cinco capítulos onde, num primeiro momento, apresento os caminhos que percorri para a chegada ao tema pesquisado, posteriormente, converso com alguns autores, demonstrando o porquê de determinadas escolhas na coleta e análise dos dados e na própria construção do trabalho. No capítulo seguinte perpasso pela discussão da [re]construção de Histórias de Vida, tendo como colaboradores e sujeitos-fonte pessoas da terceira idade. E, nos capítulos seqüentes, aprofundo a História de Vida, propriamente dita, de Helena Ferrari Teixeira, permeando essa produção através de seus saberes pessoais e profissionais. Sendo assim, acredito que ao olhar os saberes dos docentes de uma época proporcionou-me uma ressignificação de outros tempos e espaços vividos e significados por mim hoje. A partir disso, acredito que, olhar os saberes cotidianos dos professores pode e está se mostrando como mais uma alternativa relevante na produção e/ou ressignificação de saberes e práticas docentes.
Gli stili APA, Harvard, Vancouver, ISO e altri
32

Newbold, Haylie Goldene. "Infra-red vision in ferrets (Mustela furo)". The University of Waikato, 2007. http://hdl.handle.net/10289/2357.

Testo completo
Abstract (sommario):
Ferrets are labelled Unwanted Organisms under the Biosecurity Act (1993) due to their predation on New Zealand's native protected species and their status as potential vectors of Bovine Tuberculosis. There was suspicion that ferrets could detect the infrared light-emitting equipment used to monitor predator and prey behaviour. A two-alternative forced-choice operant procedure was used to test whether five pigmented male ferrets could detect infrared (870 and 920 nm) light. First, the ferrets were taught to press a lever under a lit visible (white) light emitting diode (LED) for food rewards. After up to 101 40-minute sessions, each ferret could lever press under the lit-light at or above the pass criteria of 75% responses over four consecutive (or five out of six) sessions. The same ferrets were then tested for stimulus generalisation over different stimulus properties by changing the wavelength/colour and intensity of the lit-light. The overall mean accuracy of each ferret's response to each coloured light varied between 92% and 84%. When a red light was systematically dimmed to halve the intensity nine times, all five ferrets still met the set pass criteria with overall accuracies of between 88% and 78%. This indicated that changing the properties of the light stimuli would not disrupt the ferrets' abilities to perform the learned task. This test was a necessary prerequisite before changing the light stimuli to potentially invisible wavelengths in the infrared spectrum. The light stimulus was changed to a single infrared (870) nm LED. Two of five ferrets showed strong evidence (response accuracies of 77% 4 and 72% 2) and one ferret showed weak evidence (60% 3) that they could see the light at this wavelength. Extraneous cues such as ultrasound emitted at the onset of a stimulus light or a predictable schedule of reinforcement were eliminated as potential response cues. These tests helped to prove that the ferrets were using only the light stimulus to discriminate which stimulus was lit. It may be possible that at least some feral ferrets can detect the light produced from infrared monitoring equipment that emits light wavelengths at or below 870 nm. This has significant implications for conservation because infrared equipment is used by conservation agencies in New Zealand and overseas to monitor predator and prey behaviour in the wild. If the infrared lighting is detected by the subject being observed, then it may potentially influence the behaviour of the animal, or attract a predator towards threatened native species.
Gli stili APA, Harvard, Vancouver, ISO e altri
33

Yigit, Cisem. "Life Cycle Assessment In Ferrous Foundry Industry". Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615559/index.pdf.

Testo completo
Abstract (sommario):
Foundries are most widely facilities all around the world, producing high amounts of castings. In this study, environmental impact of metal foundries was investigated toward a life cycle assessment (LCA) goal. Studies were conducted in two foundry plants in order to collect the inventory data. The difference between the plants regarding their processes was the application of secondary sand reclamation (SSR) in Plant 2. Application of SSR is indicated as a
Gli stili APA, Harvard, Vancouver, ISO e altri
34

Cooley, Gianna. "REMOVAL OF 2, 4-DINITROPHENOL BY FERRATE". Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2201.

Testo completo
Abstract (sommario):
Ferrate (molecular formula, FeVIO42-) has been studied increasingly since the 1970s as a disinfectant and coagulant for domestic wastewater and also as an oxidant for industrial wastewaters (Murmann and Roginson, 1974, Gilbert et al., 1978, Kazama, 1994, Jiang et al., 2002, and Sharmaet al., 2005). This research was performed to explore whether ferrate could possibly be used as chemical treatment for industrial wastewaters from plastic, chemical, dye, soap, and wood stain producing plants that contain 2, 4-Dinitrophenol (DNP). DNP is listed on the United States Environmental Protection Agency (EPA) Drinking Water Contaminant Candidate List (CCL). This list includes compounds which are not currently regulated at the national level, but there is a growing concern for the harm they may cause to the environment. Therefore, the EPA prioritizes these compounds and conducts extensive research to determine if these compounds should be regulated (USEPA, 2005). The effects of Ferrate on DNP were evaluated during these experiments. The effect of various dosages of Ferrate and different pH values was monitored over 17 minutes using UV 254 to determine the extent of oxidation of 300 mg L-1 DNP. Removal of DNP at all pHs and dosages was noted, however, a pH of 4 and a molar ratio of 14: 1 (Ferrate to DNP) removed the highest percentage of DNP at 87.3. The by-products of the 3.5 and 14: 1 molar ratio of Ferrate to DNP reactions at a pH of 4 and their toxicity were determined by measuring biochemical oxygen demand 5 day (BOD5), dissolved organic carbon (DOC), chlorine residual and chemical oxygen demand (COD), and gas chromatography/mass spectrometry (GC/MS) analysis. The BOD5 indicated toxicity, either from the residual chlorine or the organisms used for seeding not being acclimated to DNP and by-products. DOC of the 3.5 : 1 molar ratio was higher than calculated values indicating more ring breakage than was originally measured by UV 254. DOC of the 14: 1 molar ratio experiment was lower than calculated values, which indicated human error in measuring the DNP concentration. The chlorine residual was high for both experiments, 112 and 594 mg L-1, for the 3.5 and 14: 1 molar ratios, respectively. COD was unable to be measured due to chloride interference. The GC/MS data showed several chlorine-substituted benzene rings as well as carbon tetrachloride for the 3.5:1 molar ratio DNP experiments. The 14:1 GC/MS data indicated much more ring breakage with carbon tetrachloride, a substituted butane chain, many unknown straight chain chlorinated compounds and dichloro-pentane isomers as by-products.
M.S.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Environmental Engr MSEnvE
Gli stili APA, Harvard, Vancouver, ISO e altri
35

Jones, M. R. B. "Preparation and electrical properties of ferrous ferrites". Thesis, University of Portsmouth, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356359.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
36

D'Acierno, Charlotte, Clarence Lee e Jaehun Woo. "Ferrous futures : scenario planning for global steel". Thesis, Massachusetts Institute of Technology, 2021. https://hdl.handle.net/1721.1/132764.

Testo completo
Abstract (sommario):
Thesis: M. Arch., Massachusetts Institute of Technology, Department of Architecture, February, 2021
Cataloged from the official pdf of thesis.
Includes bibliographical references (pages 186-189).
2 trillion kilograms of steel are produced around the world on an annual basis, enough to construct 17,000 Birds Nest Stadiums, 31,000 Empire State Buildings, or 480,000 Guggenheim Bilbao skeletons. If all of this steel were to fill Central Park, this single ingot would be nearly 10 meters tall. If this steel were to wrap around the earth, it would circle the equator more than 3 times. As populations grow and urban centers densify, so too will our material dependence. This thesis combines methods from scientific research and scenario planning to develop a series of speculative futures as a response to this ever-changing and challenging environment. These scenarios provide plausible futures that operate within the confines of the current capitalist system; they highlight the absurdity of our current practice without becoming absurdly unrelatable. The goal of scenario design is not to produce an alternative material but to question the consequences of our current practice, while acknowledging that we as designers operate within a larger geopolitical context. While there are many disciplines involved in the global steel industry, architecture is still culpable. At 56%, the built environment is the single largest consumer of steel. In imagining these scenarios, we reconstruct our material culture and the effects that these speculations might have in the complex networks in which this material is embedded. "They allow us to prepare for the future...by providing a context for speaking about the unspeakable." While this thesis questions the pervasiveness of steel in the built environment, it is our hope that this reciprocal research-design methodology could be expanded or applied to other issues of global complexity.
by Charlotte D'Acierno, Clarence Lee and Jaehun Woo.
M. Arch.
M.Arch. Massachusetts Institute of Technology, Department of Architecture
Gli stili APA, Harvard, Vancouver, ISO e altri
37

Saltel, Florence. "Dermatofibrosarcome de Darier-Ferrand : à propos d'une observation et revue de la littérature". Montpellier 1, 1991. http://www.theses.fr/1991MON11129.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
38

Caillaud, Véronique. "Le dermatofibrosarcome de Darier et Ferrand : à propos de 9 cas". Bordeaux 2, 1992. http://www.theses.fr/1992BOR2M059.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
39

Ferris, Amber Cherie. "The goal of disrupting distraction: investigating how stereotype threat disrupts working memory via the dual process of control". Thesis, Montana State University, 2012. http://etd.lib.montana.edu/etd/2012/ferris/FerrisA0812.pdf.

Testo completo
Abstract (sommario):
Few researchers would argue with the notion that stereotype threat inflicts its deleterious effects by depleting working memory resources. Even fewer can explain the true nature of stereotype threat's disruptive nature on working memory. Based upon the dual process framework of control (Kane & Engle, 2003) we examined whether or not stereotype threat produces its negative effects by creating distraction that debilitates individual's ability to maintain the goal of the task and one's ability to resolve competition between conflicting responses. In Study 1, 187 men engaged in a working memory capacity measure (Ospan) and then engaged in the color Stroop task under mostly congruent list conditions or mostly incongruent list conditions. The Stroop task was described as a test of verbal ability (stereotype threat condition) or not (control). The results demonstrated that stereotype threat disrupts working memory by interfering with an individual's ability to maintain the task goals increasing Stroop error effects, especially for those with lower working memory capacity. Study 2 was designed to replicate Study 1 using a different stereotyped population and to investigate what cognitive control strategy operates while under stereotype threat. Specifically, we examined if stereotype threat increases the use of reactive control strategies whereby individuals do not actively maintain the task goal, make an error that indicates conflict, which in turn reactivates the goal for a short while. In Study 2, 144 women were given the automated version of the Reading Span task to assess working memory capacity, then completed the counting Stroop task under mostly congruent list conditions or mostly incongruent list conditions with item specific congruency manipulated within both lists. The Stroop task was described as a quantitative ability task (stereotype threat condition) or not (control). Overall errors and reaction time were again assessed. In addition, errors and reaction times for mostly congruent items, mostly incongruent items, and item-specific effects were assessed. The results did not provide significant evidence as to what type of control strategy operates under stereotype threat. Implications of how stereotype threat disrupts working memory and how interventions can address these effects are discussed.
Gli stili APA, Harvard, Vancouver, ISO e altri
40

Athasniya, Mohit. "Extrinsic Influence of Environment on Tensile Response, Impact Toughness and Fracture Behavior of Four Metals: Ferrous Versus Non Ferrous". University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1444242002.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
41

Rudolph, Stefan. "Darstellung, Reaktivität und Struktur von Mono- und Di-Manganiophosphonium-Salzen sowie Lewis-Säure-Base-Addukte von Ferraten mit metallorganischen Lewissäuren". [S.l.] : [s.n.], 2002. http://edoc.ub.uni-muenchen.de/archive/00000162.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
42

Dumery, Natalie. "Essai d'application de la thermographie infrarouge à la détection de défauts dans les remblais ferroviaires". Paris, Ecole des mines, 1986. http://www.theses.fr/1986ENMP0012.

Testo completo
Abstract (sommario):
Recherche des défauts a la limite inférieure de la plateforme. Ces défauts sans forme de zones à forte teneur en eau engendrées localement et entretenues par des drainages inopérants sont à l'origine de la déstabilisation des corps de remblai. L'étude est mesurée sur un site expérimental (du point de vue géotechnique) pour lequel on a visualise la surface supérieure du ballast en considérant que sa température est directement influencée par les caractéristiques thermo hydrauliques des couches sous-jacentes et reflète le comportement thermique de la tranche de sol considérée. Modélisation numérique des transferts verticaux de masse et de chaleur pour mettre en évidence l'influence des divers paramètres sur la réponse thermique. Traitement numérique des images thermo graphiques sur pericolor permettant de préciser les phénomènes enregistres et de mettre au point des conditions optimales d'utilisation de la méthode dans le contexte ferroviaire
Gli stili APA, Harvard, Vancouver, ISO e altri
43

Lai, Ming Fai. "Optimal assignment of ferry fleet for waterborne transportation /". View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202002%20LAI.

Testo completo
Abstract (sommario):
Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002.
Includes bibliographical references (leaves 60-61). Also available in electronic version. Access restricted to campus users.
Gli stili APA, Harvard, Vancouver, ISO e altri
44

Kuhmann, Markus. "Münzmetallverbrückte Cyanoargentate, -niccolate und -ferrate Koordinationspolymere klassischer Komplexe /". [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=958477132.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
45

Ricci, Laurent. "Modélisations discrètes et continues des voies ferrées ballastées". Phd thesis, Ecole des Ponts ParisTech, 2006. http://pastel.archives-ouvertes.fr/pastel-00003422.

Testo completo
Abstract (sommario):
Devant la dégradation plus rapide que prévue des voies ferrées ballastées aux grandes vitesses, la SNCF a engagé des recherches en collaboration avec le LCPC. L'objectif était de pouvoir indiquer, en fonction de la vitesse et de la nature du sol, le tassement associé de la voie ferrée ballastée. Le travail s'est déroulé en deux parties : la première ([ALSHAER 2005]), consistait à rechercher une loi de tassement expérimentale en fonction de l'accélération présente dans la voie ; la seconde (notre thèse) avait pour but d'élaborer un modèle de voie dynamique permettant, en fonction de la vitesse et de la nature du sol, de donner la valeur de l'accélération verticale maximale. Nous avons développé des approches dynamiques d'abord semi-analytiques linéaires multi-couches, puis numériques non-linéaires (développements dans le code CESAR-LCPC). En comparant leurs résultats aux mesures expérimentales, on a pu sélectionner les lois de comportement adaptées, et un modèle de voie ferrée.
Gli stili APA, Harvard, Vancouver, ISO e altri
46

Lo, Wai Man. "Corrosion of basic refactories in non-ferrous converters". Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/915.

Testo completo
Abstract (sommario):
In the present study, the corrosion behaviour of several magnesia-chrome (MC) and magnesia-alumina spinel (MA) bricks against fayalite type slags was investigated and the role of the spinel phases was highlighted. The experimental results revealed that the corrosion resistance of the MC bricks was superior to the MA bricks against KIVCET slags in static and dynamic conditions. As a result of the interaction between MgO from MC bricks and the slag, a modified forsterite phase (Mg, Fe, Zn, Ca) ���SiO��� was formed, which destroyed the precipitated complex spinel bonds at the grain boundaries of periclase and magnesia-chromia spinel. Furthermore, both MgO and MgO-MgAl���O��� spinel in the MA brick dissolved into the slag, which resulted in modified forsterite phases of (Mg, Fe, Zn, Ca)���SiO��� and (Mg, Fe, Zn)(Fe, Al)���0��� complex spinels, respectively. In addition, the accretion formation in the KIVCET furnace was investigated through solubility experiments of Cr���0��� in the KIVCET slag with various amounts of lead, which revealed that the net contribution of Cr���03 to the spinel formation is the highest in the barren (no Pb) slag, followed by high-lead (11% Pb) and it is the lowest for the low-lead (6% Pb) slag. The amount of spinel solid solution increased consistently with increasing Cr���0��� dissolved and the PbO existent in the slag. From examinations of several used bricks from the tuyere area of a Peirce Smith nickel converter, it was found that the corrosion is due to the interaction of the partially oxidized matte penetrating deep into the brick and the magnesia grains forming (Mg, Fe, Ni, Co) XOy spinels. Analyses of brick samples used in the KIVCET Electric Furnace roof identified deep reaching sulphation, which weakened the bonding phase between coarse magnesia grains. In the Bottom Blown Oxygen Converter, a highly aggressive lead and bismuth oxide rich slag penetrated deep into the brick, which destroyed the grain boundaries, causing the refractory to be easily eroded at the refractory-slag interface. Our studies concluded that the spinel phases, either as magnesium chromate, magnesium aluminate or complex spinel [(Mg, Fe)(Cr, Al, Fe) ���O���], enhanced the corrosion resistance of a basic refractory to fayalite type slags from the non-ferrous smelting and converting furnaces.
Gli stili APA, Harvard, Vancouver, ISO e altri
47

Strandkvist, Ida. "A Dissolution Study of Common Ferrous Slag Minerals". Licentiate thesis, Luleå tekniska universitet, Mineralteknik och metallurgi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-60227.

Testo completo
Abstract (sommario):
Slag is a vital part of metal production since it removes impurities from the metal. As slag is continuously produced, the options are either to dispose slag in landfill or acknowledge slag as a product. Slag can be used in many different applications, ranging from fertilizer to construction material; in some cases, the properties of slag make it a superior alternative to virgin stone materials. The properties and thereby the field of application is determined by the mineralogical composition of the slag. Slag is considered an environmentally friendly material as long as the leaching of certain elements stay below specified thresholds, for leaching of chromium the limit is at 0.5 mg/kg for slag to be considered inert material. The most common leaching approach is to compare leaching analyses from slag samples to deduce which elements and/or phases contribute or prevent leaching of specific elements. With this method each slag need to be investigated separately and the result may only apply for that specific slag type. In this thesis the approach is different: individual minerals are synthesized and dissolved separately at various pH to accurately assess their dissolution capabilities. By studying the dissolution of individual minerals the leaching of any type of slag with known mineralogical composition can be anticipated. Slag leaching can then be tailored, for example, chromium leaching can be eliminated if all chromium containing phases are removed or not capable of dissolving. In this thesis the dissolution of akermanite, β- and γ-dicalciumsilicate, merwinte, monticellite, pseudowollastonite and magnesiowüstite with varying FeO/MgO ratios are studied. Leaching tests of magnesiowüstite with 4 wt% Cr2O3 were also included. The dissolution of each mineral is calculated by the acid addition required to maintain a constant pH with 50 mg of mineral in 100 ml water. As expected, the dissolution decreases as pH increases, with exception of the dicalcium silicates which dissolved completely at pH 4 to 10. The dissolution of the minerals is largely connected to the elemental composition. In the silica based minerals a high Ca ratio promotes dissolution while a high Si ratio impedes the dissolution rate. Both dissolution and chromium leaching of magnesiowüstite depends on the FeO content, with increasing FeO content the dissolution and leaching decreases, magnesiowüstite with at least 60 wt% FeO does not dissolve at pH 10. None of the magnesiowüstite compositions were close to the chromium leaching limit of inert material, 0.5 mg/kg, as the highest leaching sample, with 52 wt% FeO, leached 0.069 mg/kg.
Gli stili APA, Harvard, Vancouver, ISO e altri
48

Subrahmanyam, Gowri. "Sintering and its enhancement in ferrous powder compacts". Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/32009.

Testo completo
Abstract (sommario):
Sintering maps have been developed for pure iron compacts. The maps have been drawn as a function of various sintering parameters such as particle size, green density, time and temperature. Two sets of diagrams have been drawn to define the sintering kinetics, namely, the field map and the neck growth/shrinkage map. A new and simple method has been developed to construct the field maps, which define the dominant mechanisms of mass transport that contribute to neck growth under a given set of conditions of sintering. Shrinkage maps, which show how far the neck is growing or give % linear shrinkage for a given neck size and temperature, are generated by numerically integrating, the sum of the contributions to neck growth from the different mechanisms of transport. The model developed is based on ideal geometry and does not take into account complex phenomena such as grain growth, pore coalescence or pore growth. The sintering equations and diagrams that have been developed for pure iron compacts have been used effectively in the present study to predict and analyze the results of experiments involving various attempts to enhance sintering in such compacts. Small additions of a selected group of elements were made to iron compacts in an attempt to provide activation of solid state sintering similar to that which is obtained when tungsten powder compacts are doped with nickel. A few of the dopants used with iron compacts produced a small increase in shrinkage and densification for a given set of sintering conditions. Based on the present results and on the several studies of tungsten - nickel compacts which are reported in the literature, a new theory of dopant activated sintering has been proposed. Consistent with this model, it is suggested that certain criteria must be met by the dopant-base metal combination if activated sintering is to be observed. Sintering enhancement based on ferrite stabilization in two systems, iron - phosphorus and iron - silicon has been studied. This approach to solid state sintering enhancement proved to be highly effective and it is believed to have important practical applications in the P/M parts industry. The results of these experiments were consistent with predictions based on the sintering theory and maps appropriate to the conditions of sintering employed.
Applied Science, Faculty of
Materials Engineering, Department of
Graduate
Gli stili APA, Harvard, Vancouver, ISO e altri
49

Hine, Jemma Elizabeth. "Free-field binaural unmasking in ferrets and humans". Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358701.

Testo completo
Gli stili APA, Harvard, Vancouver, ISO e altri
50

Shephard, Tim. "Alfonso I d'Este : music and identity in Ferrara". Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/13912/.

Testo completo
Abstract (sommario):
Although a great deal of documentation on the patronage of Alfonso I d'Este has already been published, music historians and cultural historians have given little attention to Alfonso's style and importance as a patron of the arts. This study aims to marshal the already-available information to examine Alfonso as a patron of music, placing his interest in music firmly within the context of both his other artistic interests and his role in the turbulent political circumstances of his reign. In so doing it adopts analytical tools developed within the fields of cultural and critical theory and current within literary and art history, although thus far only rarely brought to bear on the history of music in what was once called the High Renaissance. In particular, this study looks at Alfonso's patronage through the thematic of identity, seeking to understand the tasks achieved in the construction of the ruler as a princely persona by both large chapel choirs and private music-making. These concerns will be aligned with the demands placed upon Alfonso by the dynastic, political, military and physical context of his reign. In addressing private music-making at Alfonso's court, this study will seek to make unusually extensive use of the decorations of private courtly spaces - which will be found to offer a frame designed quite self-consciously to give meaning to the musical recreations undertaken therein. The resulting picture will substantially revise our current, somewhat haphazard and uncritical view of Alfonso's music patronage, whilst at the same time proposing new ways to read music's meaning at court. Chapters I and II were presented in abridged form at the Medieval and Renaissance Music Conference 2009 in Utrecht. Parts of Chapters III, IV and VI were presented at the Medieval and Renaissance Music Conference 2008 in Bangor, the Royal Music Association's Research Students' Conference 2009 at King's College, London, and the bodies/music conference, Cork, April 2010. Chapter V, in different versions, was presented at the RMA Annual Conference 2006 in Nottingham and the Association of Art Historians' Annual Conference 2008 in London.
Gli stili APA, Harvard, Vancouver, ISO e altri
Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!

Vai alla bibliografia