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Lidstedt, Joakim. "Evaluating Compromising Emanations in Touchscreens." Thesis, Linköpings universitet, Informationskodning, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-157366.
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In a short time touchscreens has become one of the most used methods for input to smartphones and other machines such as cash registers, card terminals and ATMs. While the technology change was quick it introduces the possibility of new security holes. Compromising emanations is a possible security hole in almost all electronic equipment. These emanations can be used in a side-channel attack if they leak information that compromise the security of the device. This thesis studies a single-board computer (SBC) with a touchscreen and a smartphone in order to evaluate if any usable information leaks regarding what is done on the touchscreen i.e. where on the screen a user touches. It is shown that the location of a touch can be read out from information leaking through the power cable and wirelessly from the single-board computer. It is also shown that basic information can be read out wirelessly from the smartphone but further testing is required to evaluate the possibility to extract usable information from the device.
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Kuhn, Markus Guenther. "Compromising emanations : eavesdropping risks of computer displays." Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620659.
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Ponnam, Sravanthi. "Keyboard Acoustic Emanations Attack : An Empirical study." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143645.
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The sounds produced from the keystrokes when a user types on the keyboard are called keyboard acoustic emanations. These sounds can be recorded with a microphone and stored as a file on the computer. Different techniques can be used to retrieve each keystroke. In this way sensitive information, such as passwords used to unlock the system or enter various protected cyber spaces can be collected and misused. This study investigates the seriousness of the keyboard acoustic emanations attack and possible threats from this type of eavesdropping. The aim of the research is to show this type of attack can be performed using simple equipment and easy to use signal processing techniques and to suggest protective measures against the threat from the attack. We use empirical methodology and perform experiments under different scenarios. Unlike the previous research, the experiments are performed in a moderately noisy environment. Our attack includes two phases, training and recognition phase. The structure of the attack is created considering views of previous research and having in mind the aim of the study. Six scenarios are created based on how the characteristics of the waveforms are presented and what types of techniques are used at the recognition phase. A separate procedure for identifying which scenario produces the highest recognition rate is designed. The results show that the waveform of the acoustic signal in presence of noise has similar shape as in silent environment and that an attacker can easily perform our experiment with keyboard acoustic emanations attack. We achieved 60% recognition rate that can be considered as satisfactory. The experiment is compared with similar ones from the previous research. Easy computation, analysis and simplicity are the advantages of our approach. At the end of the thesis we suggest preventive measures for mitigating the attack.
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Harris, Regina Gray Williamson David A. "Social emanations toward a sociology of human olfaction /." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-5170.
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Harris, Regina Gray. "Social emanations: Toward a sociology of human olfaction." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc5170/.
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Within the discipline of sociology human olfaction is rich with social significance yet remains a poorly charted frontier. Therefore, the following discourse is aimed toward the development of a foundation for the sociological study of olfaction. It is formed by the dual goals of unearthing the social history of olfaction and of providing a viable sociological account of the manner in which smells affect human ontology. From these goals arise the following research questions: (1) Have the meaning and social relevance of odors and the olfactory sensorium changed throughout different periods of history?; (2) How have those in the lineage of eminent sociological thinkers addressed the phenomenon of human olfaction during these periods?; and (3) What is the process by which aromatic stimuli are transformed from simple chemical compounds, drifting in the atmosphere, into sensations in a sensory field and then on to perceived objects, to subjects of judgment and interpretation, and finally to bases of knowledge which form and continually reform individuals in the world? The weaving of the sociohistorical tapestry of smell is undertaken to provide examples from thousands of years lived experiences as to the fluid and sociologically complex nature of individuals' olfactory senses. This historical information is presented in a narrative format and is synthesized from data gleaned from books, advertisements, articles in popular non-scientific magazines, as well as from the findings of studies published in medical/neurological, psychological, anthropological, and sociological scholarly journals. Regarding theoretical aim of this discourse, insights are drawn from Maurice Merleau-Ponty's phenomenological theory of human perception for the generation of a framework for the sociological study of olfaction. Merleau-Ponty's theoretical notions are modified, modernized, and refitted to more specifically fit the subject of human olfaction and to include all that has been discovered about the biological specifics of olfactory perception since the time of his writing. Taken in sum, this effort is an access point to the understanding of how olfactory sensory perceptions flow toward the ontological unfolding of individuals.
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Quisefit, Jean-Paul. "Physico-chimie de l'aerosol volcanique : modelisation thermochimique du refroidissement des emanations de haute temperature." Paris 7, 1988. http://www.theses.fr/1988PA077143.
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Les prelevements sur l'etna (1978-86) et le momotombo (1985-86) sont effectues a l'aide d'impacteurs en cascade fractionnant l'aerosol en 6 classes granulometriques puis analyses par pixe et sfx. Le comportement en fonction de l'activite volcanique des elements constitutifs et des elements volatiles est etudie. La modelisation thermochimique dynamique realisee permet de conclure sur les mecanismes de generation d'origine haute temperature et la modelisation thermodynamique avec ou sans apport d'air permet de conclure sur les principales voies de condensation du gaz de haute temperature evoluant naturellement
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LACROIX, GHISLAINE. "Etudes experimentales sur les effets biologiques de polluants lies aux emanations de moteurs automobiles (ozone, particules diesel)." Paris 7, 1999. http://www.theses.fr/1999PA077129.
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L'exposition aux polluants atmospheriques peut provoquer divers troubles au niveau du systeme respiratoire, s'expliquant en partie par des lesions du tissu pulmonaire suite a une inflammation locale, et par une alteration des fonctions du systeme immunitaire. Le travail a consiste a etudier ces deux aspects en realisant des expositions in vivo chez le rat et in vitro sur cellules epitheliales respiratoires, a un polluant secondaire des emanations de moteurs automobiles: l'ozone. Conjointement, des expositions in vitro a des particules diesel de reference ont ete effectuees. Apres exposition durant 2 jours a 0,9 ppm d'ozone, nous avons confirme l'existence d'une inflammation pulmonaire, se traduisant par un afflux precoce de neutrophiles, une augmentation de la permeabilite epitheliale et de la secretion de divers mediateurs pro-inflammatoires. Une diminution de la capacite de phagocytose des macrophages alveolaires a ete egalement observee des 0,3 ppm. Aucune variation n'a ete decelee au niveau des parametres de numeration/formule sanguine, ainsi qu'au niveau splenique (comptage et proliferation lymphocytaire). Aux doses testees, l'ozone et les particules diesel sont peu cytotoxiques et ne modifient pas la glycosylation membranaire des cellules en culture. Par contre, nous avons clairement mis en evidence une inhibition dose-dependante et non synergique de l'elastase leucocytaire par l'ozone et les particules diesel. En definitive, aux doses et dans les conditions experimentales utilisees, nous avons montre que l'impact de l'ozone et des particules diesel au niveau du tractus respiratoire sain etait tres modere.
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Drougge, Lucas. "Emanations- och kausalitetslära i Dantes änglalogi : En forskningssammanställning över kosmologi och Dantes änglahierarki i Den Gudomliga Komedin." Thesis, Linköpings universitet, Avdelningen för filosofi, historia, konst och religion, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-167916.
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Ambitionen med denna uppsats är att skapa en översikt över hur modern forskning ser på den hierarkiska indelning av de kristna änglarna som Dante redogör för i Den Gudomliga Komedin, samt vad som ligger till grund för rangordningen. Dessutom analyseras sambandet mellan hierarkin och änglarnas kosmologiska funktioner och deras betydelse för upprätthållandet av världen. En viktig faktor för förståelsen av Dantes änglalogi är dess relation till senmedeltidens filosofi och kristna tro; hur den påverkades av – och i sin tur påverkade – sin kontext, vilken sedan bidrog till utvecklingen av den moderna västerländska synen på världen. Den teologiska diskurs som sträcker sig ända tillbaka till de första århundradena når nämligen en höjdpunkt i Dantes änglahierarki, där tron slutligen förenas med filosofin. I Dante möts således den kristna ängladoktrinen, med utgångspunkt i Bibeln, med den neo-platonska emanationsläran och Aristoteles kausalitetslära, vilka tillsammans utgör fundamentet för det senmedeltida västerländska sättet att se på verkligheten. I denna uppsats redogörs följaktligen för Dantes änglahierarki och änglarnas kosmologiska betydelse genom att analysera den assimilation av tro och filosofi som utgör dess metafysiska grund.The ambition with this essay is to create a general idea of how modern research estimates the hierarchic division of the Christian angels, as Dante accounts for in The Divine Comedy, as well as the hierarchy it is based on. In addition to that, the connection between the hierarchy and the cosmological functions of the angels, and the subsequent task to uphold the world, is analyzed. An important factor for the comprehension of Dante’s angelology is its connection to the philosophy and Christian faith of the late medieval period; how it was affected by – and at the same time affected – its context, which eventually contributed to the generation of the modern Western world view. In fact, the theological discourse that expands from the first centuries of Christianity reaches a summit in Dante’s angelic hierarchy, where faith and philosophy finally consolidate. Thus, Christian angelic doctrine, with starting point in the Bible, meets in Dante the neo-platonic doctrine of emanation and Aristotle’s principle of causality, which together count for the foundation of the Western late medieval view of reality. The aim of this essay is consequently to investigate Dante’s angelic hierarchy and the cosmological functions of the angels, by investigating the assimilation of faith and philosophy that constitutes their metaphysical base.
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Poyhonen, Alexander J. "Don Quijote lo Interminable: La Cuestión de los Textos Originales y las Emanaciones a Través de Formas Secundarias de Arte." Scholarship @ Claremont, 2012. http://scholarship.claremont.edu/cmc_theses/522.
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In chapter 1, I ponder the role of authorship and whether or not an original text can truly exist. Specifically, the claim that Borges has that a copy can be superior to an original. From this, brings me to chapter 2 with the movie Man of la Mancha. In this movie, I highlight some of the pros and cons of a copy. The windmill scene is a negative emanation of the Quixote, while the interaction between people and the presence of women is something the movie truly displays well. In the third chapter, I look at Lost in la Mancha because it demonstrates a failed attempt to translate the Quixote. In essence, anything that tries to represent this truly great text will fail; however, it's failure can paradoxically be thought of as a success because it's an homage to the Quixote. As far as the Ezra Pound material, I thought it extremely pertinent to look at his experience on a metro because he attempts to describe a vision that he had through poetry. He notes that it is very difficult to encapsulate his entire experience because the primary form of art (his vision) is being described through a secondary form (words). Thus, when you translate a form of art through a medium it loses some of its value. This is what happens with the Quixote; its primary form (words) is being displayed through a secondary form (film), and it inevitably loses something in the translation. The final chapter/conclusion is a more in-depth investigation of this investigation primary form of art (writing). This uses the character of Gines as a concrete example of a formal and stylistic quality that is unique to literature. Namely, the physical ranging of words on a page in both a spatial and literary sense. When you extract those lines from a novel you implicitly remove some of the dialectic between Cervantes' work and the genres he's invoking, just by taking it out of the form of literature. The surroundings of text establish the meaning of the novel. The conclusion is my final chance to argue why the Quixote is so special and untranslatable. I touch on the qualities that keep it forever live and present in us today. Through the Quixote's proclivity for renaming the real world (established societal beliefs/values, etc.) in his own vein, Cervantes allows for the Quixote to reappropriate the world around him, making it uniquely his. In so doing, Cervantes creates a character who is able, not only to write his own self-history, but to control the way that said self-history will be written by others. By blurring the lines between narrator and narration and history and fiction, Cervantes creates a work that is endlessly present, where words becoming living page, and actions occur as they are said.
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), Akin James (James J. "Characterization of human skin emanations by Solid Phase Microextraction (SPME) extraction of volatiles and subsequent analysis by Gas Chromatography-Mass Spectrometry (GC-MS)." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/33399.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2005.Includes bibliographical references (p. 80-82).
An experimental study was performed to develop and validate a collection and analysis protocol for human skin emanations. The protocol developed included the rubbing of glass beads on the palms and backs of hands for 20 minutes. The volatile headspace above samples were extracted by a solid-phase microextraction fiber which incorporated a composite coating of liquid polymer matrix and solid porous particles. This protocol provided robust and convenient signatures of human skin emanations and was applied to two experiments for validation. In one experiment, a set of twins donated samples and results suggested qualitative differences between samples of twins. The second experiment involved collections from four unrelated individuals over a period of one month. Multivariate analysis was applied to this data set and indicated a stable signature that can be ascribed to the individual, confirming that the protocol developed here can be extended to larger sample sets of MHC typed individuals.
by James Akin.
S.M.
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Boyce, Michèle D. "Blake and the emanation." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252372.
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Anciaux, Nicolas. "Essai sur l’être en droit privé." Thesis, Paris 2, 2018. http://www.theses.fr/2018PA020069.
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Sous la bannière de « l’être », le discours du Droit et son interprétation rallient hommes, embryons, robots, animaux, personnes morales et entreprises : il réunit ceux qui agissent tant dans le réel que dans la sphère juridique. En mobilisant concepts et techniques de qualification, le Droit leur réserve un destin différent. Un système cohérent s’élevant de l’être émerge. L’étude de la personnalité juridique, concept analytique et fondamental, permet d’observer le destin des êtres dans le monde juridique. Elle est une abstraction tantôt d’ordre égalitariste, lorsque des hommes en bénéficient, tantôt d’ordre finaliste, lorsque des groupements en jouissent. Tous les êtres du discours du Droit ne relèvent pas de la qualification de personne. Mais parce que l’existence est, pour les hommes, une expérience corporelle, le corps humain mérite exploration : son étude complète le système de l’être. Entre personne et chose, la qualification de l’enveloppe charnelle commande de distinguer le statut du corps vivant en « entier » de celui de ses émanations. Le pouvoir de la personne sur son corps est distinct de celui qu’elle exerce sur ses émanationsUnder the banner of « beings », men, embryos, robots, animals, legal persons and firms are named as such by the law and those who interpretate it. This word unites those who act both in the reality and within the legal « world ». Through its concepts and qualification technics, private law grants them a separate fate. A coherent system arises. The study of legal personnality, regarded both as an analytical and basic concept, reveals the fate of theses beings in private law. When granted to men, legal personnality is an egalitarian abstraction ; when granted to organizations it is a specialized abstraction. All « beings » in private law do not rise to the status of « person ». But human existence is a bodily experience. Only the study of the legal status of human body will complement the system. The status on the humain body differs whether the whole body or its elements are considered : it varies between property and person
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Fruchtnicht, Erich Harold. "Radon (Rn-222) and thoron (Rn-220) emanation fractions from three separate formations of oil field pipe scale." Thesis, Texas A&M University, 2004. http://hdl.handle.net/1969.1/1231.
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Over the course of normal oil well operations, pipes used downhole in the oil and petroleum industry tend to accumulate a mineral deposit on their interior, which restricts the flow of oil. This deposit, termed scale, will eventually occlude the interior diameter of the pipe making removal from service and descaling a cost effective option. The pipes are sent to cleaning yards where they remain until descaling can be performed. This storage period can potentially create a health concern not only because of the external radiation exposure but also because of the radon gas emissions, both of which are due to the radioactive minerals contained in the scale. It was believed that the structure of the scale is formed tightly enough to prevent much of the radon from becoming airborne. The goal of this research was to determine the emanation fractions for the rattled scale samples from three formations. A high purity germanium detector was used to measure the activities of the parents and progeny of radon, and electret ion chambers were used to measure the concentration of radon emanated from the scale. The emanation fractions of between 4.9x10-5 and 1.08x10-3 for radon were a factor of approximately 100 smaller than previous research results. For thoron, the fractions were and 5.72x10-8 and 4.92x10-7 for thoron with no previous research to compare. However, information that pertains to the temperature dependence of emanation was included in this research and was not available for previous, similar research. Therefore, differences in the environment (e.g., temperature, humidity, etc.) in which the previous experiments were conducted, as well as differences in the scale formation types used, could account for the discrepancy. In addition, measuring the emanation fractions of the rattled scale was a method of determining whether surface to volume ratio dependence existed. After acquiring the emanation fractions, insufficient evidence of any surface to volume ratio dependence could be found.
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Alasjö, Alexander. "Sidokanalattack mot knappsats för elektroniskt passersystem." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-34096.
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Genom ett undersökande experiment med elektromagnetisk sidokanalattack mot en knappsats för ett kommersiellt passersystem påvisas att informationsläckage i sidokanaler är ett fortsatt aktuellt problem och hur det gör fysisk åtkomstkontroll sårbart genom avlyssning och kopiering av användaruppgifter. Med enkel radioutrustning kan knapptryckningar registreras och avkodas genom oönskad elektromagnetisk strålning och teoretiskt är det möjligt att genomföra avlyssningen på en längre distans med särskilt utformad antenn och anpassad mottagare. Rapporten diskuterar problematiken med emission security hos konsumentprodukter som i militära sammanhang benämns Tempest eller RÖS (röjande signaler) och kräver kostsamma tester för att detekteras och hanteras. I regelverk för EMC (elektromagnetisk kompatibilitet) behandlas elektriska apparaters och näts utstrålning och påverkan av elektromagnetiska vågor, men inte direkt hur information kan läcka från informationsteknologisk utrustning vilket denna rapport vill problematisera.Through an exploratory experiment using electromagnetic side-channel attack against a keypad for a commercial entry system it is demonstrated that information leakage through side-channels are an ongoing issue and may make entry systems vulnerable by recording of user data. Using simple radio equipment, keypresses can be recorded and decoded by undesired electromagnetic radiation and theoretically it is possible to carry out the attack on a longer distance with a specially designed antenna and a custom recieiver. The report discusses emission security in consumer products which in military context is termed Tempest or compromising emanations (Swedish: RÖS) and requires expensive tests to be detected and handled. The EMC regulations (electromagnetic compatibility) handles radiation and influence of electromagnetic waves in electronic apparatus and nets, but not directly how information can leak from information technology equipment which this report wants to problematize.
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Speelman, Wilcot John. "Modelling and measurement of radon diffusion through soil application on mine tailings dams." University of Western Cape, 2004. http://hdl.handle.net/11394/7360.
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Masters of ScienceRadon (222Rn) has been identified as an important factor that could result in a health hazard by studies all around the world. The health risks can be minimised by preventive measures where radon is highly concentrated as in some mines and homes. A study in the diffusion of the inert gas, will give us a better understanding of its possible pathways through soil into the air surrounding mine dumps where the radon releases can become hazardous. Measuring and modelling the radon concentrations in the mine dump soil, can help to deduce the radon flux to identify the problem areas for rehabilitation especially in the cases of gold and uranium mine tailings.
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Edsfeldt, Cecilia. "The radium distribution in some Swedish soils and its effects on radon emanation." Doctoral thesis, KTH, Civil and Environmental Engineering, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3204.
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The aim of this study has been to clarify how the radiumdistribution in soils affects the radon emanation. Thedistribution of radium, uranium and thorium has been determinedusing sequential extractions. In the study, soils from twodifferent locations were investigated.
In the first part the applicability of the sequentialextraction method for determining Ra distribution in differentsoil types was investigated, using a simple sequentialextraction method. Sampled soils were clay, sand and till fromthe vicinity of the Stockholm Esker. The main part of Rnemanating Ra was associated with Fe oxides in the soil. Themethods applied provided information about the radon risk ofthe soil, but, inorder to gain more information on theprocesses governing Ra distribution and radon emanation insoils, a more detailed sequential extraction procedure would bedesirable.
The second part consisted of a detailed study of theradionuclide distribution and the geochemistry in a podzolisedglacial till from Kloten in northern Västmanland. A moredetailed sequential extraction procedure was used, and thespecific surface area of samples was measured. Samples weretaken from E, B, and C horizons; radium and thorium wereenriched in the B horizon, whereas uranium had its maximumconcentration in the C horizon. Extractable radium primarilyoccurred in the exchangeable pool, possibly organicallycomplexed, whereas extractable uranium and thorium were mainlyFe oxide bound. Oxide-bound Ra was important only in the Bhorizon. The radon emanation was not correlated with the amountof exchangeable Ra, but instead with the oxide bound Ra.However, the amount of oxide-bound Ra was too small to accountfor all the emanated Rn, thus, exchangeable Ra was interpretedas the main source of emanated Rn. This exchangeable Ra wasmore emanative in the B horizon than in the C horizon. Theexplanation is the larger surface area of the B horizonsamples; the specific surface area appears to be the maingoverning parameter for Rn emanation in this soil. The surfacearea is largely created by the precipitation of amorphous Feoxides, thus, Fe oxides has a significant effect on Rnemanation.
Comparing the two studies, the Stockholm samples had thesame amounts of oxide-bound Fe and surface-bound Ra. Still theradon emanation was much smaller for these samples than in theKloten soil. The amount of organic matter in the B horizon ofthe Kloten soil is however, much larger than the organic mattercontent in the Stockholm samples. It is suggested that thelarge Rn emanation in the B horizon of Kloten is caused by thecombined effect of Fe oxides and organic matter.
The variability of226Ra distribution in soils was also investigated.The226Ra distribution was determined for samples from60-70 cm and 80-90 cm depth, from three adjacent soil profilesin a podzolic glacial till. Ra distributions, and estimationsof Rn risk based on the Ra distributions, of a single soilprofile, are likely to be representative for a similar area,provided that the samples are taken from a sufficientdepth.
KEYWORDS: distribution, emanation, extraction, glacial till,podzol, Ra, radium, radon, Rn, sequential soil, spodosol, Th,thorium, U, uranium, variability
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Edsfeldt, Cecilia. "The radium distribution in some Swedish soils and its effect on radon emanation /." Stockholm : Tekniska högsk, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3204.
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Adamski, Karien. "Generalised beta type II distributions - emanating from a sequential process." Thesis, University of Pretoria, 2013. http://hdl.handle.net/2263/40233.
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This study focuses on the development of a generalised multivariate beta type II distribution
as well as the noncentral and bimatrix counterparts with positive domain. These
models emanate from a sequential quality monitoring procedure with the normal and
multivariate normal distributions as the underlying process distributions. Three different
scenarios are considered, namely:
1. The variance is monitored from a normal process and the mean remains unchanged;
2. The above-mentioned scenario but the known mean also encounters a sustained
shift;
3. The covariance structure of a multivariate normal distribution is monitored with
the known mean vector unchanged.
The statistics originating from the above-mentioned scenarios considered are constructed
from different dependent chi-squared or Wishart ratios. Exact expressions are derived for
the probability density functions of these statistics. These new distributions contribute
to the statistical discipline in the sense that it can serve as alternatives to existing probability
models, and can be used in determining the performance of the quality monitoring
procedure.Thesis (PhD)--University of Pretoria, 2013.
gm2014
Statistics
unrestricted
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Oberlack, Ulrike. "I+E : illumination and emanation : light as body adornment and the implications of wearable light." Thesis, University of the Arts London, 2011. http://ualresearchonline.arts.ac.uk/5461/.
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Sherman, Brenda. "A study of the text of William Blake's Jerusalem: the emanation of the giant albion." Instructions for remote access. Click here to access this electronic resource. Access available to Kutztown University faculty, staff, and students only, 1990. http://www.kutztown.edu/library/services/remote_access.asp.
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Alvey, Joshua. "Benzotriazole enrichment in snowmelt discharge emanating from engineered snow storage facilities." Thesis, University of Alaska Anchorage, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1562333.
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Organic and inorganic contaminants accumulate on snow grain surfaces. In an urban environment, snowpacks can retain a high load of anthropogenic contaminants that, upon melting, can deliver concentrated contaminant pulses into the aquatic environment. In climates with an extended period of snowfall accumulation, such as in Anchorage, Alaska, contaminant amplification within meltwater may affect aquatic ecosystem health. A spatiotemporal study of benzotriazoles on snow, meltwater and soils was performed in association with three urban snow disposal facilities. Benzotriazole elution from engineered snow disposal sites behaved similarly to inorganic salt and dissolved organic carbon (DOC) during the initial melt period, with maximum concentrations between 2.23-7.39 μg/L; similar elution behavior was observed in creeks. Assays of disposal site soils revealed the presence of tolytriazole. Furthermore, using fluorescence spectroscopy and Parallel Factor Analysis (PARAFAC) analysis, a modeled component representative of benzotriazoles was identified, containing peaks at Ex/Em 200/306 and Ex/Em 270/387-402. It was determined that this component as well as another modeled component may be utilized as an indicator of anthropogenic input rather than a unique indicator for benzotriazole compounds. Confirmation of suspected consumer antifreeze and windshield wiping fluids containing benzotriazoles exhibited maximum tolytriazole concentrations of 644 mg/L and 138 μg/L respectively.
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Saunders, Robin David. "Seabed scour emanating from submerged three dimensional objects : archaeological case studies." Thesis, University of Southampton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418924.
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Kaya, Serpil. "Reynolds-averaged Navier-stokes Computations Of Jet Flows Emanating From Turbofan Exhausts." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12610078/index.pdf.
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This thesis presents the results of steady, Reynolds-averaged Navier-Stokes (RANS) computations for jet flow emanating from a generic turbofan engine exhaust. All computations were performed with commercial solver FLUENT v6.2.16. Different turbulence models were evaluated. In addition to turbulence modeling issues, a parametric study was considered. Different
modeling approaches for turbulent jet flows were explained in brief, with specific attention given to the Reynolds-averaged Navier-Stokes (RANS) method used for the calculations.
First, a 2D ejector problem was solved to find out the most appropriate turbulence model and solver settings for the jet flow problem under consideration. Results of one equation Spalart-Allmaras, two-equation standart k-ε
, realizable k-&
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, k-&
#969
and SST k-&
#969
turbulence models were compared with the experimental data provided and also with the results of Yoder [21]. The results of SST k-&
#969
and Spalart-Allmaras turbulence models show the best agreement with the experimental data. Discrepancy with the experimental data was observed at the initial growth region of the jet, but further downstream calculated results were closer to the measurements. Comparing the flow fields for these different turbulence models, it is seen that close to the onset of mixing section, turbulence dissipation was high for models other than SST k-&
#969
and Spalart-Allmaras turbulence models. Higher levels of turbulent kinetic energy were present in the SST k-&
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and Spalart-Allmaras turbulence models which yield better results compared to other turbulence models. The results of 2D ejector problem showed that turbulence model plays an important role to define the real physics of the problem. In the second study, analyses for a generic, subsonic, axisymmetric turbofan engine exhaust were performed. A grid sensitivity study with three different grid levels was done to determine grid dimensions of which solution does not change for the parametric study. Another turbulence model sensitivity study was performed for turbofan engine exhaust analysis to have a better understanding. In order to evaluate the results of different turbulence models, both turbulent and mean flow variables were compared. Even though turbulence models produced much different results for turbulent quantities, their effects on the mean flow field were not that much significant. For the parametric study, SST k-&
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turbulence model was used. It is seen that boundary layer thickness effect becomes important in the jet flow close to the lips of the nozzles. At far downstream regions, it does not affect the flow field. For different turbulent intensities, no significant change occurred in both mean and turbulent flow fields.
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Lakhamraju, Raghava Raju. "Characterization of the jet emanating from a self-exciting flexible membrane nozzle." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337887322.
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Biggs, Benjamin. "The impact of unwashed aggregate on water quality emanating from permeable pavements." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/23016.
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Sustainable Drainage System (SuDS) technologies set out to mitigate the adverse effects of urban stormwater runoff, through a multi-objective approach. Permeable pavement systems (PPSs) are one of the most widely-adopted SuDS technologies in South Africa. South Africa is a water scarce country and the sustainable provision of water to its citizens is one of the most significant challenges facing the country. The demand on the potable water supply system could potentially be alleviated by substituting stormwater for potable water in a 'fit for purpose' manner. A Water Research Commission (WRC) pilot study is attempting to provide locally-relevant data on the treatment efficacy of PPS for possible use in stormwater collection, treatment and storage. A laboratory experiment comprising four separate units was set up to determine the capability of various different PPS designs to reduce selected pollutants from stormwater for South African conditions. Permeable concrete block pavers of the type commonly used in the City of Cape Town (CoCT) area were laid over four different layer-work options, one in each unit, using aggregate largely collected from stockpiles used to construct a nearby PPS in a parking area at the University of Cape Town. In the first phase of the experiment - the 'flushing phase' - clean tap water was applied to each unit over a period of time in quantities roughly representative of a typical rainy season in the CoCT and the discharge was collected and analysed. The measured parameters included: orthophosphate, ammonia, suspended solids, pH and conductivity. After the initial approach proved insufficient for flushing purposes, an accelerated flushing process was then implemented to prepare, as far as reasonably possible, the unwashed in-situ aggregate for the next phase of testing. The second phase examined the pollutant retention capacity of each PPS by comparing the concentrations of various pollutants before and after treatment. However, due to the unforeseen delayed release of the pollutants from the aggregate, the attempted flushing of the insitu stone again proved insufficient for flushing purposes. The pollutants continued leaching into the effluent showing an excess of the flushing volumes applied and thus the treatment efficacy results after the accelerated flushing were contaminated. Nonetheless, these findings provide useful insights for stormwater practitioners and indicated that failure to adhere to accepted international practice with respect to the washing of the aggregate prior to construction and the prevention of the ingress of dirt into the pavement layers during construction, have an adverse impact on the treatment performance of PPS. Therefore, the selection of base materials, in particular, the use of unwashed aggregate and the variation of the treatment layers and the layer material, affect the treatment performance of the permeable paving system and can pollute storm runoff passing through the PPS substantially for an extended period of time. Further research is needed to: determine suitable flushing methods when PPS are constructed with unwashed aggregate; and conduct additional laboratory testing using pre-washed stone to assess treatment efficacy of design variations. Thereafter, suitable fit-for-purpose applications for the treated effluent can be recommended. Keywords: Permeable pavement, stormwater harvesting, Sustainable Drainage System (SuDS), treatment efficacy, pollutant retention, fit for purpose, South Africa, unwashed aggregate.
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Karlsson, Jonas. "TEMPEST attacks : Using a simple radio receiver." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik och datavetenskap, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1745.
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There are no public records that give an idea of how much emanation monitoring is actually taking place. However, there are a few data points that lead us to believe there is a real threat. One of these is that TEMPEST industry is over a billion dollars a year business. Reports like the ”Redefining Security” by Joint Security Commission stated that electronic equipment such as computers, printers, and electronic typewriters give off electromagnetic emanations and that this has long been a concern for various industries. An attacker using the latest and most efficient equipment can monitor and retrieve classified or sensitive information as it is being processed without the user being aware that a loss is occurring. But new information states that the attacker doesn’t need to have access to the latest equipment. This master thesis is based on the three statements below: It exists a cheap and simple TEMPEST technique that is a security risk. A downloadable TEMPEST virus is a powerful tool when conducting TEMPEST attacks. It does not exist a cheap and simple solution that protects common users from TEMPEST attacks. In the experiment I use a program called Tempest_for_eliza and a simple Philips radio receiver. In this thesis I prove that it exist a TEMPEST technique, that is cheap and relatively simple and still is a security risk. I prove this with facts from literature studies and an experiment. Today there is only one way to protect yourself against TEMPEST attacks and that is by metal shielding. This is expensive and home users have the option but not often the resources to finance this type of protection.
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Ristilä, Mikael. "Vitamin B₆ as a potential antioxidant : a study emanating from UV-B-stressed plants /." Örebro : Örebro universitet : Örebro universitetsbibliotek, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-625.
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Mitchell, Paul Brian. "The application of industrial minerals in the control of pollution emanating from metalliferous mine waste." Thesis, University of Exeter, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293379.
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Poussard, Christophe Georges Charles. "An analysis of residual stresses and fatigue behaviour of cracks emanating from cold worked fastener holes." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295178.
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Mchunu, Stephan Paraffin. "Alleviation of conceptual difficulties in grade 12 mechanics by addressing the challenges emanating from alternative conceptions." Thesis, University of Zululand, 2012. http://hdl.handle.net/10530/1232.
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A thesis submitted to the Faculty of Education in fulfillment of the requirements for the Degree of Doctor of Education (Science Education) in the Department of Mathematics, Science and Technology Education at the University Of Zululand, South Africa, 2012.This study sought to determine the conceptual difficulties experienced by grade 12 physical science learners with regard to mechanics. It also sought to identify the most prevalent alternative conceptions among grade 12 physical science learners in the area of mechanics, and develop interventions to alleviate the identified conceptual difficulties and alternative conceptions. In this regard, the study compared the effectiveness of a traditional lecture, outcomes-based education (OBE) and blended instructional approaches in alleviating or overcoming the identified conceptual difficulties and alternative conceptions concerning mechanics. The aspects of Mechanics dealt with in this study were: work and energy, motion on the inclined surfaces, projectile motion, force concept, static objects and Newton’s Third Law of Motion. In addressing the above research problem, the study developed and presented a theoretical and conceptual framework derived from the review of relevant literature, in line with the research questions of the study. The conceptual framework developed was based on the constructivist views of learning. A total of one hundred and forty (140) grade 12 physical science learners from Empangeni Education District were involved in this study. The study followed the quasi-experimental non-equivalent comparison-group research design. Though quantitative in design, the study also used qualitative research methods. Thus, both quantitative and qualitative data were collected. From the quantitative data, the findings showed highly statistically significant gains between pre- and post-test scores of OBE and blended approaches in particular. The average normalised gain score concept was also used determine the most effective instructional approach. Convenience sampling was used to select participating schools. A Test in Basic Mechanics (TBM) was designed to assess the learners’ understanding of the most basic concepts in mechanics. The TBM was administered both as a pre- and post-test to the three groups (traditional, OBE and blended groups) to determine the level of experience, knowledge, pre-existing alternative conceptions, level of understanding of basic concepts and principles on mechanics topics identified at the start of the investigation. As a pre-test, the TBM was also used to identify the specific conceptual difficulties and alternative conceptions in mechanics. The identification of the conceptual difficulties and alternative conceptions after the pre-test was followed by three instructional interventions (the traditional, OBE and the blended approach). The three interventions addressed the same mechanics topics mentioned above. These interventions were then followed by post-tests to ascertain the effectiveness of the interventions in addressing the identified conceptual difficulties and alternative conceptions, as well as any conceptual difficulties and alternative conceptions which were resistant to change even after the interventions. The results revealed that the learners experienced conceptual difficulties with regard to (a) resolving the components of the weight; (b) work concept; (c) work-energy theorem application; (d) kinetic energy concept; and (e) principle of conservation of mechanical energy application. Regarding the most prevalent alternative conceptions in mechanics, learners held eight alternative conceptions related to kinematical and dynamical concepts. Alternative conceptions held by the learners in mechanics concerned the following: (a) the acceleration and velocity of projectile motion; (b) weight/mass of an object as related to Newton’s Third Law of motion; (c) force concept; (d) objects in motion; (e) static objects; (f) Newton’s Third Law of motion; (g) acceleration of projectiles; and (h) active force. The average normalised gains for the traditional, OBE and blended instructional approaches were (g) = 0,20; (g) = 0,30; and (g) = 0,60, respectively. This confirmed the statistical analysis computed using One Way Analysis of Variance (ANOVA), that the blended instructional approach was the most effective instructional approach in alleviating the conceptual difficulties and alternative conceptions in mechanics. Qualitative data showed that most of the pre-existing conceptual difficulties and alternative conceptions appeared to have been alleviated, although not completely overcome by the interventions. There were statistically significant differences that were found among the traditional, OBE and blended instructional interventions. It is therefore noted that the blended instructional approach to teaching and learning can have a significant contribution to overcoming conceptual difficulties and alternative conceptions in mechanics, and the improvement of efficiency of learning. The study concluded that conceptual difficulties and alternative conceptions in mechanics could best be alleviated using the blended approach to teaching and learning. A number of recommendations were also made. Some alternative conceptions were resistant to change in the face of the traditional lecture based teaching. This meant that a more powerful teaching technique had to be devised. Thus, physical science educators should be encouraged to use the blended approach to teaching and learning in order to accommodate all learners in a class. Blended teaching and learning is mixing of different teaching and learning environments – mainly manifested in combining face-to-face instruction with the computer mediated-instruction. In one class of learners there are different learner characteristics. Learners learn in different ways like learning through lecture (telling), discussion, problem solving, practical work, discovering, experimenting, using pictures and diagrams, videos and demonstrations.
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Guzzwell, Gladstone Keith. "A hydrogeological and geophysical assessment of a contaminant plume emanating from the Terra Nova Regional Waste Disposal Site." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq25847.pdf.
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Lazaris, Dimitrios Theodoros. "Design and evaluation of portable antennas for location of sources of radio noise emanating from power-line hardware." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23619.
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Approved for public release; distribution is unlimitedPower-line noise (PLN) is a major contributor to factors which cause the loss of signals at naval receiving sites. Navy Signal-to-Noise Enhancement Program (SNEP) teams have developed portable instrumentation for the location of RF noise-producing power-line hardware. An important component of the instrumentation is a lightweight antenna with modest directivity and wide bandwidth (60-800 MHz). The purpose of this study is the design, construction, analysis, and measurement of three customized Log-periodic Dipole Arrays (LPDA) for use in locating PLN sources. Modifications to standard LPDA designs include a feeder boom with convenient construction features and emphasis on a compact, lightweight, portable structure. The Numerical Electromagnetics Code (NEC) was used to analyze the performance of the various designs. Input impedances were measured in operational environments using network analyzers. The final designed were field-tested at a U.S. Naval site in Okinawa and found to be completely acceptable for SNEP use.
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Anderson, Helen Elizabeth. "Sound emanating from the Self : an investigation of the role sound and music in the healing of disturbed Self states." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/7780.
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Includes bibliographical references (leaves 151-160).This thesis is an exploration of the therapeutic role of sound and music in the healing of disturbed psychic states. The study draws upon Jungian theory of the Self as well as music theory, and argues for the centrality of sound and music as an expression of the archetypal Self. This will be argued by reference to the Pythagorean Principles of ratio and harmony and will show that the structure of sound contains within it innate archetypal mandala formations. These mandalas are expressed by the mother in the mother-infant dyad in the form of musical mandalas and serve to link the post-uterine Self of the infant with that of the Self of the mother. The initial musical mandala is that of the lullaby. Being rhythmically soft, gentle and containing, lullabies fully embody the mother/infant/world/Self scenario. As the child develops, these musical mandalas evolve into the nursery rhyme, which serves the additional function of expressing archetypal imagery. The archetype of sound is further explored by a discussion of the archetypal significance of the string and woodwind instruments. Being representative of the archetypal principles of the masculine and feminine, it is hypothesized that these instruments are expressive of soul and spirit within the psyche. Finally, two case studies are examined in detail and through these the author tracks the effects of the archetypal properties of sound and music on the restoration of the Self. The Pythagorean principles are highlighted as existing innately within the human psyche. In addition, in these case discussions, the expression of sound as being instrumental in the creation of image formation is revealed. Both cases presented with severe disturbances that had proved to be intractable to conventional psychotherapeutic intervention. The thesis indicates how the healing occurs through the evocation of sound mandalas. These are differentially evoked by different instruments and are also conveyed in the lullaby and nursery rhyme variations. These tonal evocations of the archetypes lead, through the therapies, to an integration of the preverbal and verbal strata of the Self. These two cases illustrate how sound and music resonate with the mandalas of the psyche and in doing so mobilize them into producing an inner order. In addition, not only do sound and music give realization to the inner experiences of these mandalas but also do so with considerable therapeutic effect.
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IBRAHIM, ASHRAF. "COMPREHENSIVE STUDY OF INTERNAL FLOW FIELD AND LINEAR AND NONLINEAR INSTABILITY OF AN ANNULAR LIQUID SHEET EMANATING FROM AN ATOMIZER." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1154536582.
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Wilke, Berenguer Maite Isabel [Verfasser], Michael [Akademischer Betreuer] Scheutzow, Michael [Gutachter] Scheutzow, and Frank [Gutachter] Aurzada. "A selection of stochastic processes emanating from natural sciences / Maite Isabel Wilke Berenguer ; Gutachter: Michael Scheutzow, Frank Aurzada ; Betreuer: Michael Scheutzow." Berlin : Technische Universität Berlin, 2016. http://d-nb.info/1156014085/34.
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Feige, Kristen B. "A Geochemical Characterization of a Cold-Water Acid Rock Drainage Stream Emanating From the Zn-Pb XY-deposit, Howard's Pass, Yukon Territory, Canada." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19757.
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An acid rock drainage (ARD) stream emanating from the Zn-Pb XY-deposit in the Yukon Territory was examined in order to evaluate the physico-chemical and geochemical processes governing the distribution of dissolved elements from the creek. The creek showed very high concentrations of metals (300 mg/L Fe, 500 mg/L Zn, 15 000 µg/L Ni, 1300 µg/L Cu and 4500 µg/L Cd), low water temperatures (1 – 12°C) and was acidic to moderately acidic (pH 3.1 – 5.0). It was found that this stream experienced a strong seasonal evolution, with increased sulphate and metal concentrations and decreased pH over the course of the summer. The mineral precipitates that formed under low pH conditions were a mixture of schwertmannite, goethite, jarosite and barite, while those that formed under moderately acidic conditions were a mixture of jurbanite, hydrobasaluminite, gibbsite and an X-ray amorphous Al-sulphate phase. Most of the mineral precipitates were of inorganic origin, although microbes may have played a role in mineral formation and trace metal sequestration in some of the precipitates. All of the mineral precipitates contained anomalous concentrations of trace elements (up to 1.5 % wt Zn) and showed a seasonal evolution in their mineralogy, both of which were determined to be a function of the pH and prevailing geochemical conditions.
The geochemistry of the ARD creek draining the XY-deposit was compared to another ARD creek in the area that was likely draining shales. The two creeks were compared in order to determine if ARD geochemical characteristics can be used as a tool for the mineral exploration industry.
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Rinis, Natalie [Verfasser], Gerhard [Akademischer Betreuer] Müller-Newen, and Björn [Akademischer Betreuer] Usadel. "Characterization and localization of intracellular signals emanating from an oncogenic mutant of the cytokine receptor Gp130 / Natalie Rinis ; Gerhard Müller-Newen, Björn Usadel." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1127531115/34.
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Graham, Brydone. "An empirical analysis of financial stress within South Africa and its apparent co-movement with financial stress emanating from advanced and emerging economies." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1006795.
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The identification of financial stress, and an understanding of financial contagion on a global scale, is of critical importance to a South African economy that is becoming increasingly integrated into the global economy. The last decade has been characterised by periods of high economic growth, but also periods of significant financial instability culminating in global economic crises. This study examines the extent to which the South African financial system is exposed to distress abroad by identifying and measuring the co-movement of financial stress originating from within and outside South Africa. The study can be separated into two sections: the identification of financial stress and the measurement of financial contagion. Using monthly data for the period 2000 to 2012, three indices were constructed for the emerging markets, advanced economies and South Africa using varianceequal weighting. The indices were tested for contagion using the Johansen and Jesulius (1990) multivariate cointegration approach supplemented with basic OLS architecture and Impulse Response analysis. The results indicate the three constructed indices were highly accurate at identifying the intensity and timing of financial stress over the three regions respectively. It was found that the South African financial sector is highly susceptible to financial stress originating from advanced economies. The results obtained for financial stress emanating from emerging markets were not as conclusive and found to be insignificant. Overall, it is clear that the methods employed to identify financial stress are highly accurate and that South Africa is highly susceptible to financial stress originating from abroad. It is clear that advanced economies have a greater ability to affect financial stress in South Africa via contagion. It must be noted that this does not conclude that South Africa is not affected by emerging market crises, but that these crises tend to affect South Africa through advanced economy channels as defined within this thesis.
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Brown, Jessica S. "Determination of Signature Volatile Odor Chemicals Emanating from Novel Biological Specimens by Non-invasive Analytical Techniques for the Potential use in Forensic Identifications." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/737.
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Human scent, or the volatile organic compounds (VOCs) produced by an individual, has been recognized as a biometric measurement because of the distinct variations in both the presence and abundance of these VOCs between individuals. In forensic science, human scent has been used as a form of associative evidence by linking a suspect to a scene/object through the use of human scent discriminating canines. The scent most often collected and used with these specially trained canines is from the hands because a majority of the evidence collected is likely to have been handled by the suspect. However, the scents from other biological specimens, especially those that are likely to be present at scenes of violent crimes, have yet to be explored. Hair, fingernails and saliva are examples of these types of specimens.
In this work, a headspace solid phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS) technique was used for the identification of VOCs from hand odor, hair, fingernails and saliva. Sixty individuals were sampled and the profiles of the extracted VOCs were evaluated to assess whether they could be used for distinguishing individuals. Preliminary analysis of the biological specimens collected from an individual (intra-subject) showed that, though these materials have some VOCs in common, their overall chemical profile is different for each specimen type. Pair-wise comparisons, using Spearman Rank correlations, were made between the chemical profiles obtained from each subject, per a specimen type. Greater than 98.8% of the collected samples were distinguished from the subjects for all of the specimen types, demonstrating that these specimens can be used for distinguishing individuals.
Additionally, field trials were performed to determine the utility of these specimens as scent sources for human scent discriminating canines. Three trials were conducted to evaluate hair, fingernails and saliva in comparison to hand odor, which was considered the standard source of human odor. It was revealed that canines perform similarly to these alternative human scent sources as they do to hand odor implying that, though there are differences in the chemical profiles released by these specimens, they can still be used for the discrimination of individuals by trained canines.
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Soulé, Benjamin. "Recherche des désintégrations double bêta avec et sans émission de neutrinos du 82Se vers les états excités du 82Kr dans l'expérience NEMO3 : développement de dispositifs de mesure ultra-sensibles d'émanation du Radon pour l'expérience SuperNEMO." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0198/document.
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Le détecteur NEMO3 a été mis en place au Laboratoire Souterrain de Modane, en 2003, afin de rechercher la décroissance double bêta sans émission de neutrinos (ββ0v). La particularité de cette expérience est d’avoir pu étudier plusieurs isotopes dont le 100Mo, le 82Se, le 96Zr ou le 150Nd. En plus d’avoir placé les meilleures limites sur la demi-vie du processus ββ0v pour ces isotopes, ce détecteur a permis des mesures compétitives de leurs désintégrations ββ2v. Le premier objectif de ce travail a été de mesurer les temps de demi-vie des décroissances ββ2v et ββ0v du 82Se vers l’état excité 0+2 du 82Kr grâce aux données de NEMO3. Ces processus n’ayant pas été observés, seules des limites ont été calculées. Les résultats obtenus pour les deux décroissances sont donc T2 1=2(82Se; 0+1 → 0+2) > 1,29 x 1021 ans et T01=2(82Se; 0+1→ 0+2) > 2,31 x 1022 ans, ce dernier étant la première limite sur cette décroissance. SuperNEMO, successeur de NEMO3, cherchera à atteindre une sensibilité de 1026 ans sur la demivie de la décroissance ββ0v du 82Se. Le Radon étant une source de bruit de fond pour la recherche de cette décroissance, sa concentration dans le détecteur doit être inférieure à 0,15 mBq.m-3. Pour parvenir à un tel niveau, l’émanation de Radon des composants de SuperNEMO doit être contrôlée.Le second objectif de cette thèse a donc été de développer deux dispositifs de mesure d’émanation de Radon. Ces deux systèmes, consistants chacun en une chambre d’émanation associée à un détecteur électrostatique, ont par la suite été étalonnés puis leurs bruits de fond ont été caractérisés. Grâce à leurs sensibilités de quelques mBq.m-3, ces dispositifs ont permis de mesurer les taux d’émanation de Radon de plusieurs matériaux destinés à la construction du détecteur SuperNEMOThe NEMO3 detector was installed in the Laboratoire Souterrain de Modane, in 2003, in orderto search for neutrinoless double beta decay (ββ0v). The specificity of this experiment was the possibility to study several isotopes simultaneously. Among them were 100Mo, 82Se, 96Zr or 150Nd. In addition to setting the best limits on these isotopes half-lives for theββ 0v process, the detector performed precise measurements of their 2v ββdecays. The first point of this work was to measure the half-lives of 2v ββand 0v ββdecays of 82Se to the 0+2 excited state of 82Kr using NEMO3 data. Since those processes have not been observed, only limits were set. The resulting half-life limits are T2 1=2(82Se; 0+1 → 0+2) > 1:29 x 1021 yr and T01=2(82Se; 0+1 → 0+2) > 2:31 x 1022 yr. The latest is the first limit ever measured for this decay. SuperNEMO is the successor to NEMO3 and will aim to reach an half-life sensitivity of 1026 yr for the 0v ββdecay of 82Se. Radon being a source of background for the search of this decay, its concentration inside the detector must be less than 0:15 mBq.m-3. To reach this objective, Radon emanation from the detector componants has to be checked. The second goal of this thesis was thus to develop two setups able to measure Radon emanation. Those two devices, each consisting of an emanation chamber associated to an electrostatic detector, were calibrated before their backgrounds were characterized. With a sensitivity of a few mBq.m-3, these setups measured the Radon emanation rate of several materials which will be used for the construction of the SuperNEMO detector
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Dib, Simon. "La pensée gnostique dans la religion Druze : les Lettres de la Sagesse (69, 70 et 71)." Thesis, Paris, EPHE, 2016. http://www.theses.fr/2016EPHE5062.
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Le Druzisme représente un courant philosophico-religieux qui peut être considéré comme une doctrine d'apparence religieuse, de pensée philosophique et systématique, de référence gnostique dans l'histoire de l'Islam. Ses adeptes vivent en communauté hermétique, ses sages (šeiẖs) se retirent dans des réclusions (ẖalwāt) en s'isolant comme des mystiques, ils se livrent à une retraite spirituelle sans pratique religieuse, ils ne se réfèrent à aucune tradition précédente des religions monothéistes, de par leurs écrits ou leurs pratiques. Ils conservent une tradition et une éthique avec un code de conduite et des interdits culinaires. En revanche, le Druzisme est né au sein de l'Isma`ilisme, il établit un lien intellectuel et spirituel avec la philosophie antique et avec le néoplatonisme tout en assimilant des éléments des religions d'orient avec des éléments grecs helléniques. Peut-on alors parler d'une secte de l'Islam, du moment où il n'y a aucun lien avec ce dernier sinon le milieu historique dans lequel celle-ci est vu le jour? Peut-on parler de religion, quand il n'y a aucune religiosité ou pratique religieuse exprimée ou vécue? S'agit-il de dire que l'on est face à une théosophie alors que le lien entre les membres de la communauté n'est pas fondé sur la philosophie et que le commun des Druzes n'est pas philosophe? Comment qualifier ce phénomène d'une communauté dont le lien est une foi qui n'est pas exprimée religieusement, et une doctrine dont le contenu n'est pas révélé, à laquelle s'attachent des membres qui ne le connaissent qu'une fois initiés? En somme, qui sont les Druzes et qu'est-ce que le Druzisme? Existe-t-il un lien entre cette doctrine et la gnose?Druzism is a philosophico-religious movement which may be considered primarily as a doctrine but with a religious appearance, a systematic and philosophical thinking, with some reference to Gnosticism in the history of Islam. Its adherents live in a community of hermits, its wisemen (šeiẖs) retire in seclusion (ẖalwāt) by isolating themselves like mystics, as they deliver themselves to living in a spiritual retreat, without any religious practice ; they refer to no previous religious traditions even among the monotheistic ones, whether in reference to their sacred writings or religious practice. The Druze adheres to a tradition and a code of ethics and behaviour, as well as to culinary prohibitions. Druzism itself however, was born in the heart of Ismailism, while establishing an intellectual and a spiritual link with both ancient philosophies and neoplatonism, all the while assimilating various element of mid and far-eastern religions, mixed with Greek and Hellenistic ideas. Can we therefore speak of the Druze as if forming a sect of Islam? Can we even speak of a religion where in fact there is no trace of religiosity or religious practice either expressed or lived? Is it possible that we are facing theosophy where the link between the members of the community is certainly not founded on a philosophy? How can one qualify this phenomenon of a community where the main tenet is that of a faith which is not expressed in a religious manner, and a held doctrine the contents of which are not revealed, to which its members adhere, not knowing it fully unless once initiated? In summary, who are the Druzes, and what is Druzism? Is there a link between its doctrine and that of Gnosticism?
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Al-Kayyali, Abdul-Hameed. "La doctrine de la prophétie chez Maïmonide (m. 601/1204) entre pensée juive et pensée musulmane." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM3111/document.
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Maïmonide (m. 601/1204) est resté sans doute une figure majeure du judaïsme rabbinique. Mais, sa connaissance de la philosophie fit de lui une référence indispensable dans la pensée philosophico-religieuse juive, chrétienne et musulmane. Son œuvre, riche et variée, témoigne de la jonction harmonieuse, dans un même esprit, d'une religiosité profonde, telle qu'elle s'exprime dans ses traités juridiques et théologiques, et d'une curiosité philosophique et métaphysique qui se révèle dans son œuvre Le Guide des égarés. La présente étude consiste à analyser les origines de la doctrine de la prophétie chez Maïmonide en puisant dans un premier temps, dans ses propres sources, pour les comparer dans un second temps aux références textuelles des philosophes musulmans tels que Fārābī, Ibn Sīnā et Ibn Bāğğa. Le chapitre I a pour objet la définition de la prophétie chez Maïmonide. Le chapitre II porte sur le rôle de l'imagination dans la prophétie. Le chapitre III est consacrée aux significations politiques de la prophétieMaimonides (d. 601/1204) is universally recognized as a leading rabbinic authority in Judaism. His eminence as a philosopher made him an indispensable source in Jewish, Christian and Islamic philosophical and religious thought. The present study aims to analyze the origins of the doctrine of prophecy in Maimonides' philosophy by studying, first, the original sources and then to compare them with the works completed by Muslim philosophers, most notably, Fārābī, Ibn Sīnā and Ibn Bāğğa. Chapter I addresses Maimonides' definition of prophecy. Chapter II examines the role of imagination in the prophecy. Chapter III is devoted to the political implications of prophecy
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Andrade, César Cristóvão Costa. "Gaseous emanations from Azores volcanic lakes : geochemical characterization." Doctoral thesis, 2019. http://hdl.handle.net/10400.3/5287.
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Tese de Doutoramento, Geologia, especialidade de Hidrogeologia, 3 de dezembro de 2019, Universidade dos Açores.[…]. Com o objetivo de proceder a uma caracterização e quantificação da desgaseificação difusa através dos lagos vulcânicos existentes no arquipélago dos Açores, foi realizado um estudo em 45 destas massas de água, dispersas por seis ilhas. No decurso dos trabalhos de campo foram efetuadas amostragens de água através de perfis verticais, a várias profundidades, assim como medições do fluxo de dióxido de carbono libertado à superfície destes lagos. Sempre que possível, e por forma a compreender o efeito da sazonalidade sobre os resultados obtidos, realizaram-se pelo menos duas campanhas de amostragem, uma no período de inverno e outra no período de verão. A caracterização hidrogeoquímica permitiu constatar que alguns lagos apresentam um comportamento monomítico, com estratificação da coluna de água no período mais quente do ano, implicando a ocorrência de concentrações de dióxido de carbono mais elevadas no hipolimnion e sendo a neutralização da acidez da água promovida pela interação água-rocha, o que acarreta um enriquecimento também em bicarbonato. Já durante o inverno este processo não é observável, o que permite, assim, que ocorra uma mistura da água ao longo de toda a coluna de água, não ficando, desta forma, o CO₂ retido em profundidade. Nestas condições, registam-se concentrações de CO₂ dissolvido na água significativamente mais reduzidas em profundidade. A eutrofização, processo que afeta muitos lagos no arquipélago dos Açores, também contribui para o incremento das emissões de CO₂ de origem biogénica. Em particular, a presença de áreas cobertas por massas densas de algas e macrófitas em alguns lagos também é responsável pelo incremento nas concentrações de alguns parâmetros físico-químicos, em especial de dióxido de carbono. Para além da contribuição do CO₂ livre a partir da degradação da matéria orgânica acumulada nos lagos, foi ainda identificada, em alguns casos, uma componente claramente associada à contaminação da água por fluidos de origem magmática, nomeadamente na lagoa das Furnas e de Santiago (São Miguel) e na Lagoa da Furna do Enxofre (Graciosa). […].
ABSTRACT: […]. With the aim of characterizing and quantifying diffuse degassing on the volcanic lakes which exist in the archipelago, a study was performed on 45 water bodies dispersed across six islands. Fieldwork comprised water sampling at several depths along vertical profiles, as well as measurements of CO₂ degassing at lake surface. Whenever possible, two sampling surveys, one during winter and another in summer, were carried out. Hydrogeochemical characterization lead to the conclusion that some lakes exhibit monomitic behavior, with water column stratification during the warmer period of the year, implying the occurrence higher carbon dioxide concentrations in the hypolimnion and the neutralization of water acidity promoted by water-rock interaction, which also leads to a bicarbonate enrichment. This process is not observed during winter, which allows for good water mixing along the water column with no CO₂ retention at the bottom. In these conditions, dissolved CO₂ concentrations at the bottom are significantly reduced. Eutrophication, a process that affects several lakes in the Azores, also contributes to the increase of CO₂ emissions of biogenic origin. In some lakes, the existence of water surfaces covered by dense masses of macrophyte algae is also responsible for the increased concentration of some physical and chemical parameters, mainly CO₂. Apart from the contribution of free CO₂ resulting from the degradation of organic matter accumulated at the bottom of the lakes, a component clearly linked to the water contamination by fluids of magmatic origin was also identified, namely at Furnas and Santiago lakes (on São Miguel) and Furna do Enxofre Lake (Graciosa). […].
This research was supported by FCT – Foundation for Science and Technology César Andrade was supported by PhD Grant from Foundation for Science and Technology (SFRH/BD/101962/2014)
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Liu, Mei-Chuan, and 劉美娟. "Emanation from Electric Vapor Mosquito Mat." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/01708215106677113696.
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碩士國立臺灣大學
公共衛生研究所
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The electric mosquito mat was heated in an ventilated chamber of simulated environment. The generated matters in particulate phase were collected byusing glass-fiber filter and Teflon filter respectively. The matters in gasphase were sampled by Sep-Pak DNPH silica cartridge and XAD-2 sorbent tube. The headspace air in a desicator containing electric vapor mosquito mat at room temperature was captured with Teflon filter and XAD-2 sorbent tube. The paper matrix of electric vapor mosquito mat was burned out and the residue was rinsed for analysis. In addition, the parent mosquito mat was also extracted by using acetonitrile. The compounds in the samples was identified by GC- MS. Several hazardous chemicals at various conditionswere disclosed. The concentration of toluene ranged from 5.47 ppm to 15.64ppm at room temperature. Butylated hydroxytohydroxytoluene (B.H.T.) were discovering at room and high temperature. Allethrin was found only in particulate phase. Suppose the particulate from different sources have the identical attack effect on mosquito, the effectiveness of pest control with the electric vapor mosquito mat shall better than that of mosquito coil.
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Yu-Chin, Bai, and 白友欽. "A newtonian jet emanating from a conical converging tube." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/83553268480278704873.
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Tucker, Bevan H. "Strong gravitational effects on pulsar signals emanating from compact binary systems." Thesis, 2015. http://hdl.handle.net/10539/16839.
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A dissertation submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfilment of requirements for the degree of Master of Science. Johannesburg, 2014.No abstract supplied.
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常安陸. "The emanation ofintuitive knowledge:a parallel study of the philosophies of Ralph Waldo Emerson and Wang Yang-ming." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/02736958505259545295.
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Mofokeng, Dikonketso Shirley-may. "Analyses of the impacts of bacteriological seepage emanating from pig farming on the natural environment." Diss., 2014. http://hdl.handle.net/10500/19820.
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Modern pig farming production may over burden the environment with organic substances, exposure of bacterial pathogens and introduction of resistance gene. This may be caused by the pig’s droppings, lack of seepage management or accidental spillage of seepage which may impact on the environment and its physicochemical parameters. The objective of this study is to determine and assess the level of bacteriological pollution emanating from the pig farm and their impact on the physicochemical parameters of soil and water as well as to identify the presence of antibiotic resistance gene of these prevailing bacteria. Soil and water samples were collected monthly for a period of six months (March- August 2013). Samples were collected at pig enclosures, soil 20 m and 100 m away from pig enclosures, constructed wetland used for treating pig farm wastewater, soil 20m and 100 m away from constructed wetland. Procedure followed for analysing soil and water samples includes physicochemical analyses, viable cell counts of 10-1 to 10-8 dilutions, identification of bacteria using API 20E test kit, antibiotic susceptibility analyses, and identification of resistance gene using molecular procedures. The media that were used for viable cell counts were, Nutrient agar, MacConkey Agar, Xylose Lysine Deoxycholate agar (XLD agar), and Eosin Methylene Blue (EMB). Physicochemical parameters of water showed unacceptable high levels of analysed parameters for BOD (163 mg/L to 3350 mg/L), TDS (0.77 g/L to 6.48 mg/L), COD (210 mg/L to 9400 mg/L), NO3 (55 mg/L to 1680 mg/L), NO2 (37.5 mg/L to 2730 mg/L), and PO43− (50 mg/L to 1427 mg/L) were higher than the maximum permissible limits set by Department of Water Affairs and Forestry (DWAF). For soil samples TDS (0.01g/L to 0.88 g/L), COD (40 mg/L to 304 mg/L), NO3 (32.5 mg/L to 475 mg/L), and NO2 (7.35 mg/L to 255 mg/L) and PO43- (32.5 mg/L to 475 mg/L ) were observed to be higher than recommended limits set by Federal Ministry for the Environmental (FME). The viable cells in soil samples 30cm depth ranged from 0 cfu/mL to 2.44 x 1010cfu/mL, in soil 5cm depth ranged from 1.00 x 101 cfu/mL to 1.91 x 1010 cfu/mL, and in water samples viable cells ranged from 5.00 x 101 to 5.05 x 109. Pseudomonas luteola (Ps. luteola), Escherichia vulneris (E. vulneris), Salmonella choleraesuis spp arizonae, Escherichia coli 1(E. coli 1), Enterobacter cloacae, Pseudomonas flourescens/putida (Ps. flourescens/putida), Enterobacter aerogenes, Serratia ordoriferal, Pasteurella pneumotropica, Ochrobactrum antropi, Proteus vulgaris group, Proteus vulgaris, Salmonella spp, Aeromonas Hydrophila/caviae/sobria1, Proteus Mirabillis, Vibrio fluvials, Rahnella aquatillis, Pseudomonas aeruginosa (Ps. aeruginosa), Burkholderia Cepacia, Stenotrophomonas maltophilia (St. maltophilia), Shwenella putrefaciens, Klebsiela pneumonia, Cedecea davisa, Serratia liquefaciens, Serratia plymuthica, Enterobacter sakaziki, Citrobacter braakii, Enterobacter amnigenus 2, Yersinia pestis, Serratia ficaria, Enterobacter gergoriae, Enterobacter amnigenus 1, Serratia marcescens, Raoutella terrigena, Hafnia alvei 1, Providencia rettgeri, and Pantoa were isolated from soil and water samples from the pig farm. Isolates were highly resistant to Penicillin G, Sulphamethaxazole, Vancomycin, Tilmocozin, Oxytetracycline, Spectinomycin, Lincomycin, and Trimethoprim. The most resistance genes detected in most isolates were aa (6’)-le-aph (2”)-la, aph (2”)-lb, aph (3”)-llla, Van A, Van B, Otr A and Otr B. Pig farm seepage is causing bacterial pollution which is impacting negatively on the natural environment in the vicinity of pig farm by introducing bacterial pathogens that have an antibiotic resistance gene and is increasing the physicochemical parameters for soil and water in the natural environment at the pig farm.
It is therefore recommended that pig farms should consider the need to implement appropriate regulatory agencies that may include the regular monitoring of the qualities of final effluents from waste water treatment facilities. In addition there is a need to limit soil pollution in order to safe guard the natural environment in the vicinity of pig farm from bacteriological pollution and introduction of antibiotic resistance gene. It is also recommended that more advanced technologies should be introduced that will assist pig farms to manages the seepage properly.Environmental Sciences
M. Sc. (Environmental Sciences)
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Phiri, Thulane Raymond. "Roasting of sulphide concentrates and acid leaching of calcines emanating from conventional and microwave assisted roasting." Thesis, 2012. http://hdl.handle.net/10210/4849.
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M.Tech.The study presented, investigated the acid leaching behavior of calcines emanating from conventional roasting and microwave assisted roasting of sulphide ores. The aim was to investigate a possible change in the mineral composition of the calcine produced and to investigate the leaching behavior of the calcine produced by conventional and microwave assisted roasting. Two sulphide concentrates were received, pyrite concentrate from OTJIHASE concentrator and sphalerite concentrate from ZINCOR. The mineralogical study was done using the XRD (PANalytical X-PertPro X-Ray diffractometer) to determine the mineral composition of the concentrate and the head grade of each concentrate was determined with an Atomic Absorption Spectrometry (AAS) machine for copper, iron and zinc. The concentrates were wet screened at 500, 355, 212, 150, 106 and 75 μm screens for size distribution and for the purpose of the study it was required that 80% of concentrate should pass the 75 μm screen since after roasting, the calcine obtained were to be acid leached. Conventional roasting was carried out at temperatures of 500oC, 700oC, 850oC and 1000oC at durations of 5min, 10min, 20min, 30min, 1hour and 2hours, while microwave assisted roasting carried out at powers of 200W, 400W, 600W, 800W and time intervals of 3s, 10s, 30s, 30min and 1hour
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ZHANG, MIN, and 張敏. "The determination of the stress intensity factors of cracks emanating from various circular inclusions by photoelastic method." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/41159973290036838077.
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