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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
171

Translating from Practitioners to Patients : Adaption for a new type of readership

Lundberg, Turid January 2013 (has links)
The aim of this paper is to analyse the ways in which a Swedish translation of an English text intended as a manual for health practitioners needs to be adapted in order to function as an informative text aimed at patients, their families and other laymen interested in the subject. Focus lies on adaption of terminology, style, and target reader perspective. For this paper, selected parts of an English source text were translated into Swedish, and different adaptions prompted by the change in genre, intended target reader and purpose of the text were noticed and subsequently analysed. In the analysis, it became clear that translation of terminology can be treated through addition, omission or generalization where subject specific terms are not relevant for the intended readers. Under the subject of style, formality level defined through the usage of nominalizations and passives was analysed, and here, modulation and transposition proved useful for adapting the formality level to better fit the purpose of the text. Under the category of target reader perspective, omission, generalization and modulation of different kinds were translation strategies used to turn the focus from the intended ST reader to the intended TT reader. Defining or re-defining the subject of different actions was also necessary to shift the perspective from one intended group of readers to another. Finally, the analysis showed that different kinds of adaption may be purposeful in different situations.
172

Addition reactions of ylidene-dinitriles

Adewole, Funmilayo A. 03 June 2011 (has links)
Nucleophilic addition reactions of cyclohexylidenemalononitrile occur mainly in the conjugate manner.When the nucleophile was the hydride anion, selective reduction of the carbon-carbon double bond only took place at low temperatures. At ambient temperature, reduction was more estensive, resulting in ah eneaminonitrile. During the alkylation of cyclohexylidenemalononitrile, reduction by alkylmagnesium bromides was favored by the presence of a S-hydrogen on the alkyl group, and by the degree of branching in the latter; arylmagnesium bromides were however, less reactive. Alkaline hydrolysis of the Grignard adducts did not take place readily. The stepwise nature of this process was clearly demonstrated by the fact that, the substrates were hydrated to varying extents, depending on the steric environment of the cyano groups.Ball State UniversityMuncie, IN 47306
173

Turbulent Premixed Flame Kernel Growth During The Early Stages Using Direct Numerical Simulation

Dunstan, T. D. January 2008 (has links)
In this thesis Direct Numerical Simulation (DNS) is used to investigate the development of turbulent premixed flame kernels during the early stages of growth typical of the period following spark ignition. Two distinct aspects of this phase are considered: the interaction of the expanding kernel with a field of decaying turbulence, and the chemical and thermo-diffusive response of the flame for different fresh-gas compositions. In the first part of the study, three-dimensional, repeated simulations with single-step chemistry are used to generate ensemble statistics of global flame growth. The surface-conditioned mean fluid-velocity magnitude is found to vary significantly across different isosurfaces of the reaction progress variable, and this is shown to lead to a bias in the distribution of the Surface Density Function (SDF) around the developing flame. Two-dimensional simulations in an extended domain indicate that this effect translates into a similar directional bias in the Flame Surface Density (FSD) at later stages in the kernel development. Properties of the fresh gas turbulence decay are assessed from an independent, non-reacting simulation database. In the second part of this study, two-dimensional simulations with a detailed 68-step reaction mechanism are used to investigate the thermo-diffusive response of pure methane-air, and hydrogen-enriched methane-air flames. The changes in local and global behaviour due to the different laminar flame characteristics, and the response of the flames to strain and curvature are examined at different equivalence ratios and turbulence intensities. Mechanisms leading to flame quenching are discussed and the effect of mean flame curvature is assessed through comparison with an equivalent planar flame. The effects of hydrogen addition are found to be particularly pronounced in flame kernels due to the higher positive stretch rates and reduced thermo-diffusive stability of hydrogen-enriched flames.
174

Studies Related to Tandem Reactivity of 1-Carbomethoxy-5-dicyanomethyl-1,3-cyclohexadiene

Krismanich, Anthony January 2006 (has links)
A set of studies centered around the reactions of the active methine compound 1-carbomethoxy-5-dicyanomethyl-1,3-cyclohexadiene (the "ring-opened adduct"), obtained by base-induced ring-opening of the Diels-Alder adduct of 5,5-dicyanocyclopentadiene and methyl acrylate, has been carried out. A plan was devised for the anionic (at the dicyanomethyl carbon) ring-opened adduct whereby its reaction with electrophiles, for example Michael reactions with double-bond acceptors, would generate reactive intermediates that would undergo cyclization by tandem conjugate addition to the a,ß,?,d-unsaturated ring p-system to generate bicyclic compounds. In practice, reaction with di-<i>tert</i>-butyl methylidenemalonate, methyl vinyl ketone, and cyclopentenone generated intermediates that exhibited greater tandem reactivity than was anticipated: the bicyclic enolates were found to cyclize further by Thorpe-Ziegler-like reaction with the proximal nitrile to generate, after facile acid hydrolysis, substituted known tricyclic skeleta termed homobrendanes, specifically, tricyclo[5. 2. 1. 0<sup>4,8</sup>]decenes. An attempt was made to generalize the reaction to other substrates, among them singly-activated Michael acceptors and 1,2-heteroatom electrophiles, but the generalization of the homobrendane forming reaction did not meet with success. Attempted functional group manipulations to probe the conversion of the homobrendane derived from di-<i>tert</i>-butyl methylidenemalonate to the homobrendane natural product 2-isocyanoallopupukeanane revealed the unreactivity of the skeletal double-bond toward electrophiles and the high reactivity of the ring ketone toward nucleophiles, among them mCPBA which brought about Baeyer-Villiger reaction, and chloride and hydroxide, which brought about addition/elimination reactions to cleave the last-formed homobrendane ring. <br /> The ring-opened adduct was also envisaged as a potential substrate in intramolecular Heck reactions. To this end, Heck substrates were generated from the ring-opened adduct anion and iodo- and bromo-benzyl halides. A key observation at this stage pertained to the unexpected acidity of the ring-opened adduct C5 proton, which could be deprotonated by DBU to bring about allylic isomerization, a finding that would provide a key insight to the pattern of reactivity later evidenced with alkyl propiolates. Optimization of the Heck substrate-generating reaction was followed by Heck reactions under Jeffery's conditions, which generated angular tricycles as intended, accompanied by aromatic compounds generated by base-induced HCN elimination/rearrangement and dehydrogenation. The Jeffery's conditions were optimized to limit the production of aromatics. <br /> The possibility of ring-opened adduct-derived vinyl silane intermediates undergoing cationic cyclizations led to a minor study based upon the bromination of allylsilanes and the elimination of TMSBr from 1,2-dibromo-3-trimethylsilyl compounds, accessible compounds unaccounted for in the review literature. It was determined that the combination of HBr and Br<sub>2</sub> (perhaps as HBr<sub>3</sub>) was required to eliminate TMSBr, in contravention of the textbook account of electrophilic substitutions being the inherent reactions of allylsilanes and Br<sub>2</sub>. <br /> Unexpected tandem reactivity was observed in the reactions of the anionic ring-opened adduct and alkyl propiolates under catalytic DBU conditions. Rather than tandem cyclization or simple adduct formation, the allenolate intermediates were determined to undergo extremely facile formal allenolate Cope rearrangements involving the ?,d-double-bond of the parent ring. Excess base intercepted the allenolate by deprotonating ring C5 and effecting 1,2-vinyl transfer by 3-<i>exo</i>-trig addition-elimination. The chemistry of the highly delocalized side-chain carbanion in the Cope product was studied in detail.
175

Parallel Evaluation Of Fixed-Point Polynomials / Parallell evaluering av polynom i fix-talrepresentation

Nawaz Khan, Shahid January 2010 (has links)
In some applications polynomials should be evaluated, e.g., polynomial approximation of elementary function and Farrow filter for arbitrary re-sampling. For polynomial evaluation Horner’s scheme uses the minimum amount of hardware resources, but it is sequential. Many algorithms were developed to introduce parallelism in polynomial evaluation. This parallelism is achieved at the cost of hardware, but ensures evaluation in less time. This work examines the trade-off between hardware cost and the critical path for different level of parallelism for polynomial evaluation. The trade-offs in generating powers in polynomial evaluation using different building blocks(squarers and multipliers) are also discussed. Wordlength requirements of the polynomial evaluation and the effect of power generating schemes on the timing of operations is also discussed. The area requirements are calculated by using Design Analyzer from Synopsys (tool for logic synthesis) and the GLPK (GNU Linear Programming Kit) is used to calculate the bit requirements.
176

Studies Related to Tandem Reactivity of 1-Carbomethoxy-5-dicyanomethyl-1,3-cyclohexadiene

Krismanich, Anthony January 2006 (has links)
A set of studies centered around the reactions of the active methine compound 1-carbomethoxy-5-dicyanomethyl-1,3-cyclohexadiene (the "ring-opened adduct"), obtained by base-induced ring-opening of the Diels-Alder adduct of 5,5-dicyanocyclopentadiene and methyl acrylate, has been carried out. A plan was devised for the anionic (at the dicyanomethyl carbon) ring-opened adduct whereby its reaction with electrophiles, for example Michael reactions with double-bond acceptors, would generate reactive intermediates that would undergo cyclization by tandem conjugate addition to the a,ß,?,d-unsaturated ring p-system to generate bicyclic compounds. In practice, reaction with di-<i>tert</i>-butyl methylidenemalonate, methyl vinyl ketone, and cyclopentenone generated intermediates that exhibited greater tandem reactivity than was anticipated: the bicyclic enolates were found to cyclize further by Thorpe-Ziegler-like reaction with the proximal nitrile to generate, after facile acid hydrolysis, substituted known tricyclic skeleta termed homobrendanes, specifically, tricyclo[5. 2. 1. 0<sup>4,8</sup>]decenes. An attempt was made to generalize the reaction to other substrates, among them singly-activated Michael acceptors and 1,2-heteroatom electrophiles, but the generalization of the homobrendane forming reaction did not meet with success. Attempted functional group manipulations to probe the conversion of the homobrendane derived from di-<i>tert</i>-butyl methylidenemalonate to the homobrendane natural product 2-isocyanoallopupukeanane revealed the unreactivity of the skeletal double-bond toward electrophiles and the high reactivity of the ring ketone toward nucleophiles, among them mCPBA which brought about Baeyer-Villiger reaction, and chloride and hydroxide, which brought about addition/elimination reactions to cleave the last-formed homobrendane ring. <br /> The ring-opened adduct was also envisaged as a potential substrate in intramolecular Heck reactions. To this end, Heck substrates were generated from the ring-opened adduct anion and iodo- and bromo-benzyl halides. A key observation at this stage pertained to the unexpected acidity of the ring-opened adduct C5 proton, which could be deprotonated by DBU to bring about allylic isomerization, a finding that would provide a key insight to the pattern of reactivity later evidenced with alkyl propiolates. Optimization of the Heck substrate-generating reaction was followed by Heck reactions under Jeffery's conditions, which generated angular tricycles as intended, accompanied by aromatic compounds generated by base-induced HCN elimination/rearrangement and dehydrogenation. The Jeffery's conditions were optimized to limit the production of aromatics. <br /> The possibility of ring-opened adduct-derived vinyl silane intermediates undergoing cationic cyclizations led to a minor study based upon the bromination of allylsilanes and the elimination of TMSBr from 1,2-dibromo-3-trimethylsilyl compounds, accessible compounds unaccounted for in the review literature. It was determined that the combination of HBr and Br<sub>2</sub> (perhaps as HBr<sub>3</sub>) was required to eliminate TMSBr, in contravention of the textbook account of electrophilic substitutions being the inherent reactions of allylsilanes and Br<sub>2</sub>. <br /> Unexpected tandem reactivity was observed in the reactions of the anionic ring-opened adduct and alkyl propiolates under catalytic DBU conditions. Rather than tandem cyclization or simple adduct formation, the allenolate intermediates were determined to undergo extremely facile formal allenolate Cope rearrangements involving the ?,d-double-bond of the parent ring. Excess base intercepted the allenolate by deprotonating ring C5 and effecting 1,2-vinyl transfer by 3-<i>exo</i>-trig addition-elimination. The chemistry of the highly delocalized side-chain carbanion in the Cope product was studied in detail.
177

Translating a text on the American Indian Wars: : A study of what kinds of adaption are required to make the TT suit the intended readers

Sundquist, Margareta January 2011 (has links)
Abstract The aim of this essay is to find out what kinds of adaption are necessary when translating an English text from a specialist book into a text that will suit Swedish students in upper secondary school. In order to obtain the data needed for the study I translated a part of a chapter from the book North American Indian Wars by Richard H. Dillon. The analysis focuses on how to make the target text as clear and unambiguous as possible for the intended readers and what methods can be used to reach this aim. The analysis shows that one kind of adaption that had to be made during the translation process mainly consisted of additions and omissions. The additions were made in order to clarify certain passages in the source text that otherwise could have been difficult for the target readers to understand. The omissions, on the other hand, were often made due to the fact that some of the words or phrases in the source text are very specific and may refer to things that may be unknown to the target readers. In some cases such words or phrases could be omitted without making the target text lose any vital information, and in some cases they had to be exchanged with an explanation or a word that would be easier for the intended readers to understand. Apart from addition and omission of information, Vinay and Darbelnet’s procedures of modulation and equivalence were used in order to make the target text accessible to the target readers. The analysis shows that obligatory modulation had to be used due to differences in point of view between English and Swedish, whereas optional modulation was used to suit the target readers’ level of attainment. The analysis also shows that Vinay and Darbelnet’s procedure of equivalence was very useful when translating idioms, metaphors and similes in order to make the target text easy to understand for the target readers.
178

De fyra räknesätten - förankrade hos eleverna i årskurs 9?

Sergrström, Carolina, Unsal, Nalin January 2006 (has links)
Vi har undersökt vilka räknefärdigheter en grupp elever i årskurs 9 på en skola i Växjö har i addition, subtraktion, multiplikation och division. Vi har avgränsat studien till att behandla de naturliga talen och decimaltalen. De metoder, kunskaper och de svårigheter som åskådliggjorts har vi redovisat. Vi har även tagit reda på elevernas begreppsförståelse kring de fyra räknesätten. Vårt resultat bygger på en kvalitativ metod som består av ett test och två kompletterande intervjuer. Vi kan av vår undersökning se att den metod som gav flest korrekta lösningar var traditionella algoritmuppställningar medan skriftlig huvudräkning oftare gav fel svar. Eftersom vi valde ut två elever från testet med varierande kunskaper och svårigheter, fann vi en intressant koppling till deras olika begreppsförståelse och ållning till ämnet matematik.
179

The influence of aluminum salts on the retention of titanium dioxide when using cationic polyelectrolyte as a retention aid

Proxmire, Paul R. 11 June 1988 (has links)
No description available.
180

1. A Versatile Approach to 6-Substituted-5-methoxy-d-lactam Framework and Application to the Synthesis of Natural Products and Pharmaceuticals 2. A New Approach to Isoindolone Skeleton

Chen, Bo-Fong 07 October 2004 (has links)
1. The key glutarimides were obtained via facile [3+3] annulation. The method featured regioselective introduction of C-6 substituents in glutarimides, and application to the synthesis of natural products and pharmaceuticals. 2. The synthesis of a novel substituted aza-ticyclic compounds through the use of the intramolecular Diels-Alder reaction is present. Further aromaticzation in the present of BF3 to afford 2,3-dihydro-isoindolone.The use of method for the rapid preparation of a substituted isoindolone framework is described.

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