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Dissertations / Theses on the topic 'Agama agama'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Swart, Belinda. "The phylogeography of the southern rock agama (Agama atra) in the Cape Fold Mountains, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2006. http://hdl.handle.net/10019.1/21762.

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Thesis (MSc)--University of Stellenbosch, 2006.<br>ENGLISH ABSTRACT: An understanding of the phylogeography and evolutionary processes involved in speciation is essential for the conservation and management of any particular species. To investigate the phylogeographic patterns in Agama atra from the Cape Fold Mountains (CFM), 98 individuals from 38 geographically close localities were analysed. In addition, to understand the phylogeographic associations between the CFM populations and the rest of Southern Africa, 18 specimens from 12 localities outside the CFM were also included. A total of 988 characters derived from two mitochondrial DNA fragments (control region and ND2) revealed 59 distinct haplotypes in the CFM. Parsimony, Bayesian and maximum likelihood analyses revealed four distinct clades associated with geography within the CFM. These clades were supported by a haplotype network and were defined as the Cape Peninsula clade, the Limietberg clade, the northern CFM clade and the central CFM clade. Analysis of molecular variance confirmed the high degree of genetic structure within the CFM, with more than 75% of genetic variation found among the geographic areas. SAMOVA and nested clade analysis (NCA) suggest that the central CFM clade may be more diverse than detected by the networks and the phylogenetic analyses. The processes that caused the four distinct genetic groups in the CFM are not yet clear. Using a speculative molecular clock estimate, the main cladogenesis of A. atra within the CFM took place, approximately ~6.5 - 9 MYA. This dating coincides well with the documented Miocene-Pliocene climate fluctuations which might have contributed towards the isolation among lineages. The genetic structure found in A. atra is also markedly congruent with what has been found in other taxa such as Mesamphisopus spesies, Potamonautes brincki, and Pedioplanis burchelli and this would further support vicariance as a main isolating factor here.<br>AFRIKAANSE OPSOMMING: ‘n Goeie begrip van die filogeografie en die evolusionêre gebeurtenisse wat verband hou met spesiasie is belangrik vir die bewaring en bestuur van enige spesie. Om die filogeografiese patrone in Agama atra van die Kaapse Plooiberge (KPB) te ontleed, was 98 individue van 38 nabygeleë lokaliteite geanaliseer. Tesame met bogenoemde monsters was 18 individue van 12 lokaliteite van buite die KPB ook geanaliseer om die filogeografiese verwantskappe tussen die KPB bevolkings en die res van Suidelike Afrika te ondersoek. Uit ‘n totaal van 988 karakters verkry uit twee mitochondriale DNS fragmente (die kontrole gebied en ND2) is 59 haplotipes gevind. Parsimonie en modelgebaseerde filogenetiese analises dui daarop dat vier groepe geassosieer met geografie binne die KPB voorkom. Die groepe word geondersteun deur ‘n haplotipe netwerk en word soos volg gedefinieer: ‘n Kaapse Peninsula groep, ‘n Limietberg groep, ‘n noordelike KPB groep en ‘n sentrale KPB groep. Analises van molekulêre variansie (AMOVA) bevestig die hoë graad van genetiese struktuur binne die KPB, met meer as 75% genetiese variasie gevind tussen die geografiese areas. SAMOVA en gesetelde groep analises (“NCA”) stel voor dat die sentrale KPB groep dalk meer variasie vertoon as wat die netwerk en filogenetiese analises vertoon. Die prosesse wat die vier genetiese groepe tot stand gebring het is nog nie bekend nie. Volgens ‘n spekulatiewe molekulêre klok berekening het die hoof kladogenese van A. atra binne die KPB ongeveer ~6.5 - 9 miljoen jaar (MJ) gelede plaasgevind. Hierdie datering stem goed ooreen met die gedokumenteerde Mioseen-Plioseen klimaat veranderinge wat isolasie van die groepe kon bewerkstellig het. Die genetiese struktuur van A. atra in the KPB is ook gevind in ander taksa soos Mesamphisopus spesies, Potamonautes brincki, en Pedioplanis burchelli en bevestig dus dat vikariansie hier die hoof faktor vir isolasie is.
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2

Seo, Seo-Won. "Etude sur Mara dans le contexte des Quatre Agama." Lille 3 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376098838.

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3

Seo, Seong-won. "Étude sur Mara dans le contexte des Quatre Agama." Paris 4, 1987. http://www.theses.fr/1987PA040179.

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Le présent travail est une étude sur le personnage de Mara, dieu de l'amour et de la mort, qui est le symbole bouddhique du mal. On a depuis longtemps remarqué qu'il y a dans ce personnage toute une allégorie qui est rigoureusement conforme aux doctrines bouddhiques; pourtant on connait encore assez mal le personnage lui-même. Il s'agit ici d'étudier notamment la nature, le rôle et la signification de Mara dans le contexte des quatre âgama, une des collections importantes de la littérature bouddhique ancienne<br>The present work consists in a study of the figure of Mara, god of love and death, who represents the buddhistic symbol of evil. It has been noticed for a long time that the latter includes all an allegory strictly in conformity with the buddhistic doctrines. However, we are not yet familiar with the personage himself. The matter in question is to study especially the nature, the part, the signification of Mara within the four agama, considered as one of the most important collections of the ancient buddhistic literature
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4

Lasiyo. "Agama Khonghucu : an emerging form of religious life among the Indonesian Chinese." Thesis, SOAS, University of London, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497320.

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5

Linder, Julia [Verfasser]. "Entwicklungen des Buddhismus im zwanzigsten Jahrhundert in Indonesien : Strömungen, Verwerfungen und Aushandlungen der «Agama Buddha (di) Indonesia» / Julia Linder." Frankfurt a.M. : Peter Lang GmbH, Internationaler Verlag der Wissenschaften, 2017. http://d-nb.info/1138919691/34.

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6

Hwang, Soon-il. "Metaphor and literalism : a study of doctrinal development of nirvana in the pali Nikaya and subsequent tradition compared with the Chinese Agama and its traditional interpretation." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273232.

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7

Brammah, Martin Chee Weng. "Phenotypic, genetic and behavioural differences between and within two subspecies of Starred Agama : Laudakia stellio stellio and L. s. daani, on islands in the Greek Cyclades." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611919.

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8

Beišytė, Ingrida. "PKF "Agava" plėtros galimybių studija." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2007. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2007~D_20070816_160038-54050.

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PKF „Agava“ plėtros galimybių studija. Magistro darbas. 2004 – 2007 metais atlikta PKF „Agava“ plėtros galimybių studija. Išnagrinėta literatūra šia tema, ištirti įmonės išoriniai tiesioginiai ir netiesioginiai veiksniai, įmonės ištekliai. Praplečiant 2004 m. atliktą tyrimą bei norint dar geriau pažinti įmonės klientus, atlikta platesnė bei išsamesnė jų apklausa. Gauti duomenys apdoroti SPSS programa. Atlikta klientų apklausa padėjo nustatyti klientų kontingentą, jų amžių, pajamas, išlaidų paskirstymą. Ištirta, kokios prekės daugiausiai perkamos, kaip klientai vertina įmonę ir jos konkurentus, kokiomis paslaugomis dažniausiai naudojasi, kaip vertina jų kokybę. Išorinių bei vidinių veiksnių įtaka ��monei apibendrinta atliekant SSGG analizę. Remiantis tyrimų duomenimis, suformuluotas strateginis tikslas, uždaviniai bei priemonės jam įgyvendinti, nustatyti atsakingi asmenys bei terminai. Apibendrinus tyrimo duomenis, pateiktos teorinės ir praktinės išvados bei rekomendacijos.<br>The analysis of the potentiality expansion of the trading commercial company “Agava“ Final work on Masters‘s degree. The analysis of the potentiality expansion of the trading commercial company “Agava“ was carried out in 2004 – 2007. Literature on the given topic was analysed, direct and indirect factors, resources of the company were investigated. In order to extend the accomplished research and to know the company customers better a wider and more detailed survey was organized. The received data were processed with SSPS program.The survey for customers helped to determine the customers‘ contingent, their age, income, expense distribution. It was examined what goods are most popular, how customers evaluate this company and its competitor rivals, which services they usually use, what they think of the company. The influence of external and internal factors was summarized carrying out SSGG analysis. Strategic objective, goals and means were formulated, executives and terms were nominated on the grounds of the research data. Having summarized the research data theoretical and practical conclusions and recommendations were given.
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9

Unsworth, Carl David. "Characterisation of an asymmetric AGATA detector." Thesis, University of Liverpool, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.569522.

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The Advanced GAmma Tracking Array, AGATA, is a European project aimed at constructing a next-generation gamma-ray spectrometer for nuclear structure studies. The completed array will consist of a 47f shell of 180 highly segmented HPGe detectors arranged into 60 triple clusters. The array will be instrumented with state of the art digital electronics, and will apply Pulse Shape Analysis (PSA) and Gamma-Ray Tracking (GRT) algorithms to achieve high efficiency while maintaining the excellent peak-to-total ratio of current escape-suppressed spectrometers. Vital to the successful application of PSA is the establishment of a pulse shape database describing the signal shape produced by interactions at each point in the detectors volume. Electric field simulations have been developed within the AGATA collaboration to provide this signal basis but it is necessary that they are tested against experimental measurements. Characterisation measurements were performed on asymmetric AGATA capsule C00l using the Liverpool scanning system and state-of-the-art digital electronics. A highly collimated beam of 662ke V gamma rays was scanned across the detector and single and coincident trigger modes were used to measure the response due to gamma rays interacting at precisely determined points within the detector. These signals were then compared with signals produced by the electric field simulations Multi Geometry Simulation (MGS) and JAVA AGATA Signal Simulation (JASS) and an assessment made of their performance. Position resolutions of 7.8mm and 8.4mm have been measured when performing PSA with MGS and JASS respectively. These values are larger than expected and an attempt has been made to understand the reasons for this. In addition, measurements have been carried out to assess the electronics response function of the detector and associated electronics. The results of these characterisation measurements will be used by the AGATA collaboaration to refine the online PSA and GRT algorithms used with the array.
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Dimmock, Matthew Richard. "Characterisation of AGATA Symmetric Prototype Detectors." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.490628.

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The Advanced GAmma 'Iracking Array (AGATA) is a European project that is aiming to construct a complete 411' High Purity Germanium (HPGe) gamma-ray spectrometer for nuclear structure studies at future Radioactive Ion Beam (RIB) Facilities. The proposed array will utilise digital electronics, Pulse Shape Analysis (PSA) and Gamma-Ray 'Iracking (GRT) algorithms, to overcome the limited efficiencies encountered by current Escape Suppressed Spectrometers (ESS), whilst maintaining the high Peak-to-Tot~l ratio. Iiiji 1.j Two AGATA symmetrical segmented Canberra Eurisys (CE) prototype HPGe detectors have been tested at the University of Liverpool. A highly collimated 137Cs (662keV) beam was raster scanned across each detector and data were collected in both singles and coincidence modes. The charge sensitive preamplifier output pulse shapes from all 37 channels (one for each of the 36 segments and one for the centre contact) were digitised and stored for off-line analysis. The shapes of the real charge and image charge pulses have been studied to give detailed information on the position dependent response of each detector. The singles data has enabled the investigation of the detector response through the bulk crystal. The coincidence data has been utilised to validate the electric field simulation code 11ulti Geometry Simulation (:MGS). The precisely determined 3D interaction positions have allowed the comparison of experimental pulse shapes from single site interactions with those generated by the simulation. The data sets have also been utilised to validate the efficacy of the scanning procedure for producing comparable data sets for consecutive detectors. The absolute position sensitivity has been evaluated.
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11

Filmer, Fay. "Methodology development for the analysis of AGATA data." Thesis, University of Liverpool, 2011. http://livrepository.liverpool.ac.uk/8353/.

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The Advanced GAmma Tracking Array (AGATA) project is an European collabora- tion project that is aiming to construct a next generation gamma-ray spectrometer for nuclear-structure applications. The final array will consist of 180 highly-segmented HPGe detectors mounted into 60 triple clusters forming a full 4π shell. AGATA will utilise pulse-shape analysis and gamma-ray tracking to achieve high photopeak efficiency and peak-to-total. Central to the AGATA spectrometer is the Nouvelle Ac- quisition temps-Réel Version 1.2 Avec Linux (NARVAL) data-acquisition system that will perform pulse-shape analysis and gamma-ray tracking calculations in real time (online). The system is comprised of separate blocks of actions, called actors. Each one containing a self-sufficient piece of code designed for a specific action. AGATA data can be downloaded and replayed through an offline version of NARVAL, known as the NARVAL-emulator. With a new format and techniques there is need to define new methodology to analyse the data. Discussed in the first part of this work will be processing of AGATA data and how by utilising the actors of the NARVAL-emulator different output formats can be chosen. In the next part of this work, the Compton polarimetry capability of an AGATA triple cluster will be investigated by utilising pulse-shape analysis and the detector’s granularity. The basic design of a Compton polarimeter consists of two detectors; one acting as a scatterer and the second as a absorber. The same principles apply to an AGATA triple cluster with each sector act- ing as the scatterer and absorber. The pulse-shape analysis algorithm identifies the positions and energies of the interaction points. Data was obtained from the heavy- ion fusion-evaporation of 110Pd (32S,4n) 138Sm at 135 MeV was used to investigate the Compton polarimetry capability of an AGATA triple cluster. This work utilised the phenomenon that the scattering cross-section for gamma rays is larger in the direction perpendicular to its electric field vector than parallel. This is described by the differ- ential Compton scattering cross-section for polarised gamma rays. A useful event to determine linear polarisation occurs if the incident gamma ray is Compton scattered from the first interaction and then fully absorbed at the second interaction. The sum of the energies deposited in the two interactions gives the energy while the azimuthal scattering angle contains the linear polarisation information. To determine the linear polarisation of a gamma ray, a polarisation sensitivity and asymmetry measurement can be made. Such measurements were made in this work using gamma rays from 138Sm of known linear polarisations. The polarisation sensitivity method utilised the incident and scattered gamma-ray energy, in addition to the azimuthal scattering an- gle information produced from the pulse-shape analysis algorithm. The experimental polarisation sensitivities ranged from 5.0±0.3% at 139.7 keV to 16.4±0.1% at 1287 keV. A asymmetry measurement was carried by determining the number of gamma rays that scattered perpendicular and parallel to the reaction plane. A positive asym- metry would indicate an electric transition and a negative a magnetic one. It was found that there was partial consistency with expectation. From the asymmetry and polarisation sensitivity measurement an experimental linear polarisation for each gamma ray was determined. The result should be in the range −1≤P(θγ)≤+1 with the sign propagating through from the asymmetry measurement. Finally a coinci- dence efficiency and figure of merit was measured and are given as 32.6±1.0% and 3.9±0.2%, respectively at 346.9 keV. Overall it was concluded that there was limited Compton polarimetry capability and proposed reasons for this were discussed.
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Reese, Michael. "Intermediate-energy Coulomb excitation with the PreSPEC-AGATA setup." Phd thesis, Technische Universität Darmstadt, 2018. https://tuprints.ulb.tu-darmstadt.de/7327/1/DissReese_v1.1.0.pdf.

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This thesis is about the improvement of software tools and methods for analyzing high resolution γ-ray spectroscopy data of intermediate energy Coulomb excitation experiments at the PreSPEC-AGATA setup. In the past, pioneering experiments have been done in the RISING campaign at GSI. The PreSPEC-AGATA setup has been the next step in the evolution of this type of experiments, with better and more complex instrumentation, leading to higher sensitivity and resolution. This work is relevant for for the preparation of the even more demanding future HISPEC setup at the upcoming FAIR facility. HISPEC experiments will study low-lying excited states of nuclei far from stability, in order to test the validity of nuclear structure models in that area of the nuclear chart. More complex instrumentation results in more complex data analysis programs. In order to deal with the complexity involved in developing such software for the upcoming experiments, a more systematic approach to the development process is needed. Within this work, a software framework was developed to facilitate a systematic and clean software design. This might be helpful for upcoming NUSTAR experiments at FAIR, where a large number of independent detector systems have to be integrated into a big setup. The design of the framework is discussed in the second chapter of this thesis. One important reaction mechanism for the HISPEC experiments is Coulomb excitation at energies of around 150 MeV/u. Because of the purely electromagnetic nature of the interaction, Coulomb excitation is described well by theoretical models. In the third chapter of this thesis, a numerical simulation program for relativistic ion-ion collisions was developed that solves the coupled channel equations for electric Coulomb excitation. In the fourth chapter, the relevant detector systems of the PreSPEC setup are presented, and the calibration of them is discussed. A main aspect of the work was the development of improved ways to analyze data from these devices, and, if possible to provide semi-automatic implementations for their calibration. In the last chapter, the total efficiency of the PreSPEC-setup was determined for a typical Coulomb excitation experiment, and the possibility to measure projectile excitation cross-sections relative to a target excitation cross-section is demonstrated.
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Regina, Jenny. "Identication of Neutron-Rich Xe-Isotopes in PRISMA+AGATA Data." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-202167.

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The purpose of this project was to analyze data from an experiment carried out at LNL (Legnaro National Laboratories) in order to test the collective nuclear model. In the experiment 170Dy was created by multi-nucleon transfer reactions. This isotope is predicted to be the most collective of all nuclei with A &lt; 190. γ-ray energies originating from its deexcitation allow to measure its collectivity. The PRISMA spectrometer was used to determine which ions were produced in the reactions and AGATA measured the γ-radiation from these products. The analysis consists of a calibration process of all detectors and eventually leads to the identication of 170Dy and of its deexcitation energies. This report explains the analysis procedure and some of the steps to identify the reaction prodcuts and corresponding γ-ray energies were performed. Xe-isotopes and corresponding γ-spectra have been identied.
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Jagoda, Agata [Verfasser]. "Zwei-Photonen-Melaninfluoreszenz zur Diagnostik des malignen Melanoms / Agata Jagoda." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2018. http://d-nb.info/1176639528/34.

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Bogusz, Agata [Verfasser]. "Molekulare und evolutionsgenetische Untersuchungen am Gen des Uteroglobins / Agata Bogusz." Aachen : Shaker, 2003. http://d-nb.info/1181601681/34.

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Olariu, Albert. "Pulse shape analysis for the gamma-ray tracking detector AGATA." Paris 11, 2007. http://www.theses.fr/2007PA112349.

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AGATA is the European project for a 4π gamma-ray tracking array of Ge detectors and is expected to have a detection sensitivity three orders of magnitude larger than the presently in use gamma spectrometers. Tracking systems are working in position sensitive mode and the obtaining of a position resolution of a few millimeters through Pulse Shape Analysis (PSA) is essential. The aim of this Thesis is to develop and test a PSA method for AGATA. The gamma interactions in the Ge crystals are localized by decomposing the detector signal in a basis of reference signals, characterizing the crystal. The problem is reduced to a large system of linear equations, which is solved in the least-squares sense using mainly matrix inversion. We have tested out method using both simulated and experimental signals measured with a prototype AGATA capsule. We have obtained average positional erros of 1 - 2 mm with simulated single interactions, which shows that our method is well suited for its purpose.
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Jagoda, Agata Monika [Verfasser]. "Zwei-Photonen-Melaninfluoreszenz zur Diagnostik des malignen Melanoms / Agata Jagoda." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2018. http://nbn-resolving.de/urn:nbn:de:kobv:188-refubium-23525-4.

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Dukaczewska, Agata Katarzyna [Verfasser]. "Establishment of a murine model of ocular toxoplasmosis / Agata Katarzyna Dukaczewska." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2012. http://d-nb.info/1029849536/34.

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Zienkiewicz, Agata [Verfasser]. "Wachstumsabhängige Expressionsmusteranalysen von Regulatoren der Biofilmsynthese in Staphylococcus epidermidis / Agata Zienkiewicz." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2018. http://d-nb.info/1152032178/34.

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Bloor, Daniel. "The simulated performance of AGATA following relativistic Coulomb excitation at GSI." Thesis, University of York, 2013. http://etheses.whiterose.ac.uk/5483/.

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In preparation for the AGATA campaign at GSI, a set of simulation tools to be utilised with the AGATA simulation code has been developed, enabling the response of the proposed AGATA geometries for use at GSI to be simulated following a relativistic Coulomb excitation reaction. The γ-ray tracking algorithms, crucial to the performance of AGATA, have previously been untested in a relativistic environment with high levels of background, and as a result has been evaluated in a variety of simulated conditions with varying levels of background. To assess the performance of the γ-ray tracking algorithms, the γ-ray spectra of the RISING array from a recent PreSPEC experiment (Experiment S377 in May 2011) has been compared with a simulation, in order to determine the simulation input that provided a similar spectral response. The optimum simulation input was then used to evaluate the performance of the AGATA geometries and the γ-ray tracking under the same conditions. Simulations have highlighted that tracking is possible for unshielded detectors in the experimental conditions at GSI, providing that the atomic background multiplicity can be kept below a certain threshold. The inclusion of the extreme levels of atomic background in the simulations completely saturates the γ-rays of interest, suggesting that the use of shielding needs to be further investigated. Assuming that shielding or analysis techniques are to be used experimentally, the atomic back- ground was removed from the simulations leaving only the high energy background component, and the consecutive performance of the AGATA geometries were investigated and compared with RISING. Under such conditions, the AGATA geometries gave up to a factor of ∼2 improvement in terms of the peak-to-total ratio compared to the RISING array.
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Silva, Rodrigo de Almeida. "Avaliação da perda da coloração artificial de ágatas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2006. http://hdl.handle.net/10183/10181.

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O Rio Grande do Sul é um dos principais produtores de geodos de ágatas do mundo. Na região do Salto do Jacuí existe um tipo de ágata cinza, ideal para tingimento, chamada “Umbu”. Essas ágatas porosas permitem a introdução de alguns corantes em sua estrutura, tornando-as coloridas artificialmente. Este trabalho teve como objetivo avaliar a colorimetria como ferramenta para o controle das cores no tingimento de ágatas. Avaliou-se a resistência da cor em função do tempo e locais de exposição para ágatas tingidas com corantes orgânicos e inorgânicos. Estudaram-se as ágatas coloridas com os seguintes corantes orgânicos: verde brilhante (verde), rodamina B (rosa), cristal violeta (roxo) e vermelho sangue (vermelho). Também se avaliaram as colorações dos seguintes procedimentos clássicos de tingimento: ferrocianeto de potássio/sulfato de ferro (azul), nitrato de ferro/calcinação (vermelho), ácido crômico/carbonato de amônio (verde) e açúcar/ácido sulfúrico (preto). O procedimento experimental consistiu em expor chapas de ágatas em três ambientes com luminosidade distintas (escuro, doméstico e ao ar livre), por um período de 30 semanas, sendo a variação da cor analisada, com um espectrofotômetro Minolta 2600 d, utilizando o sistema colorimétrico L* a* b* aliada à colorimetria diferencial.Os resultados demonstraram que a colorimetria diferencial se mostrou uma ferramenta eficiente para avaliar a perda de cor em ágatas coloridas artificialmente. Os métodos clássicos de tingimento em verde e vermelho produzem cores estáveis. Já os procedimentos clássicos para coloração azul e preto apresentam variações, podendo ser considerados fotossensíveis. Todos os corantes orgânicos estudados (anilinas) sofrem degradação pela luz.<br>The State of Rio Grande do Sul in Brazil, is one of the main world producers of geodes of agates: (a stone having a cavity lined with crystals). The gray type of agates, found in the region of Salto do Jacuí, called: “UMBÚ”, is ideal for coloring. These porous agates are suitable to some artificial colorings applications on their walls. The purpose of this paper is to analyze the measurements of agates colored by means of a colorimeter. The aging factor of colored agates with organic and inorganic dyes was evaluated. The colored agates with following organic colorings were analyzed: Brilliant green, rhodamine B (pink), crystal violet (purple), and blood red. The coloring of the following standard procedures of dyeing were also evaluated: Ferrocyanid of potassium/sulfate of iron (blue), nitrate of iron/calcinations (red), chromic acid/carbonate of ammonium (green), and sugar/sulfuric acid (black). The experimental procedures consisted of exposing agate plates in three places with distinct luminosity (dark, in door/domestic, and outdoors). The color variation was analyzed with a Minolta 2600d spectrophotometer, using the L* a* b* colorimetrical system as related to the colorimetric differential.The results have demonstrated that the colorimetric differential revealed itself as an efficient tool to evaluate the loss of artificially colored agates. The standards procedures for dyeing in green and red produce stable colors. The standard procedures, for dyeing in blue and black, offer variations, as they can be considered photosensitive. All the studied organic colorings (anilines) are degraded by the light.
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Ericksson, Cristiane. "Estudo de caso, replicação, padronização e otimização de técnicas de tratamento de gemas : processos de tingimento de ágata do Rio Grande do Sul." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/172053.

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A ágata do sul do Brasil apresenta colorações pouco interessantes ou salientes, sendo predominante os tons acinzentados. Tais qualidades foram fatores determinantes para o início do processo de tingimento de ágata do Rio Grande do Sul, no século XVIII. Atualmente, o segmento mineral, apresenta carências relacionadas a tecnologias e processos de produção, além de infraestruturas inadequadas, resultando em prejuízo para as comunidades produtoras. Nesse cenário, a pesquisa se estrutura para avaliar técnicas operacionais viáveis para o setor, objetivando a melhoria do valor agregado às gemas beneficiadas e qualidade na cor. Para o desenvolvimento do tratamento de ágatas, o sistema foi replicado, padronizado e otimizado no Laboratório LAPROM da UFRGS e Centro Tecnológico de Pedras, Gemas e Joias do Rio Grande do Sul. A amostragem foi classificada em quatro padrões e analisada em espectrofotômetro em três etapas distintas. Ao término, se tem a comparação dos resultados do tingimento otimizado e o industrial, com as curvas de distribuição espectral medidas antes e após o tratamento termoquímico da ágata. Com o sistema otimizado, foi possível reduzir custos operacionais, tempo de energia envolvida no sistema, além de manter e elevar a qualidade da cor, sendo possível estabelecer relação com aspectos quanti e qualitativos dos reagentes utilizados.<br>The agate of the south of Brazil presents not much interesting or salient colorations, being predominant the grayish tones. These qualities were determining factors for the beginning of the agate dyeing process in Rio Grande do Sul, in the 18th century. Currently, the mineral segment presents deficiencies related to technologies and production processes, as well as inadequate infrastructures, resulting in loss to the producing communities. In this scenario, the research is structured to evaluate viable operational techniques for the sector, aiming to improve the value added to the gems benefited and color quality. For the development of the agate treatment, the system was replicated, standardized and optimized in the LAPROM Laboratory of the UFRGS and Centro Tecnológico de Pedras, Gemas e Joias do Rio Grande do Sul. The sampling was classified in four standards and spectrophotometer analyzed in three different phases. In conclusion, is compared the optimized and industrialized dyeing results, with the spectral distribution curves measured before and after the thermochemical treatment of the agate. With the optimized system, it was possible to reduce operating costs, energy time involved in the system, as well as keep and elevate color quality and being possible to establish relationship with quantitative and qualitative aspects of the reagents used.
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Dominik, Agata [Verfasser]. "Röntgenologische Veränderung des marginalen Knochenniveaus nach Parodontaltherapie - eine prospektive Studie / Agata Dominik." Greifswald : Universitätsbibliothek Greifswald, 2013. http://d-nb.info/1043162585/34.

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Colosimo, Samantha. "The characterisation of AGATA high purity germanium detectors for pulse shape analysis." Thesis, University of Liverpool, 2013. http://livrepository.liverpool.ac.uk/11077/.

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Gamma-ray spectroscopy is an essential tool in the study of nuclear phenomenon. The study of exotic nuclei and nuclear states have been used to expand the nuclear chart as well as understand the origin of the universe. Large volume high purity germanium arrays, very high beam intensities and more recently exotic beams have lead to new understanding of nuclear physics. The Advanced Gamma Tracking Array (AGATA) aims to utilise high purity germanium (HPGe) detectors in order to achieve a dramatic increase in efficiency over current spectrometers. The work detailed in this thesis shows a highly detailed characterisation of two AGATA asymmetric capsules of the same shape in order to test and compare performances. Detector A004 was acceptance tested and scanned at the University of Liverpool in February 2010. Detector A006 was scanned between April and September 2010. Resolution, efficiency and charge collection parameters have been studied, comparing these two detector. The results of the comparison show an excellent agreement between the performance of the two detectors. The depletion rate of the detectors has also been compared quantitatively indicating the dependence of depletion on impurity concentration of the capsules. An experimental pulse shape database was generated for detector A006. The sensitivity of the detector response was quantified indicating the regions of the detector of high variation in pulse shape response. The AGATA detector library, which used to simulate the detector response for pulse shape analysis, is compared with this database. The position resolution achieved between the two data sets has been calculated. The combination of the detailed comparison and characterisation of the detector with the study of the simulate database will provide the AGATA collaboration with useful information to improve detector simulations in the further for pulse shape analysis.
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Wiens, Andreas [Verfasser]. "Optimized high energy resolution in γ-ray spectroscopy with AGATA triple cluster detectors / Andreas Wiens". München : Verlag Dr. Hut, 2011. http://d-nb.info/1018981853/34.

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Malottki, Karolina Agata [Verfasser]. "Können Scores und Streptokokkenschnelltests die diagnostische Unsicherheit von Hausärzten bei Halsschmerzpatienten reduzieren? / Karolina Agata Malottki." Kiel : Universitätsbibliothek Kiel, 2017. http://d-nb.info/1137509597/34.

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Lapa, Agata [Verfasser], Aldo [Akademischer Betreuer] Boccaccini, Aldo [Gutachter] Boccaccini, Ifty [Gutachter] Ahmed, and Uwe [Gutachter] Gbureck. "Bioactive Phosphate Glasses / Agata Lapa ; Gutachter: Aldo Boccaccini, Ifty Ahmed, Uwe Gbureck ; Betreuer: Aldo Boccaccini." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2019. http://d-nb.info/1204637679/34.

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Olszewska, Agata [Verfasser], and Katja Maren [Akademischer Betreuer] Arndt. "Forming magnetic chain with the help of biological organisms / Agata Olszewska ; Betreuer: Katja Maren Arndt." Potsdam : Universität Potsdam, 2015. http://d-nb.info/1218400366/34.

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Paszko, Agata Katarzyna [Verfasser]. "Freisetzungskinetik des N-terminalen pro-B-Typ natriuretischen Peptids im klinischen Myokardinfarktmodell / Agata Katarzyna Paszko." Gießen : Universitätsbibliothek, 2019. http://d-nb.info/1191094456/34.

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Reese, Michael [Verfasser], Norbert [Akademischer Betreuer] Pietralla, and Thomas [Akademischer Betreuer] Aumann. "Intermediate-energy Coulomb excitation with the PreSPEC-AGATA setup / Michael Reese ; Norbert Pietralla, Thomas Aumann." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2018. http://d-nb.info/1157011969/34.

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Slee, Michael John. "The development of Compton imaging techiques for the GammaKev project using the AGATA A006 detector." Thesis, University of Liverpool, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632553.

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This thesis presents the methods and results different position analysis techniques provide for Compton image reconstruction. The AGATA A006 detector a highly segmented large volume detector has been utilised for the analysis of data presented in this thesis. This data contained within the thesis was part of the GammaKEV project, which aimed to develop a portable gamma-ray spectrometer for use on a nuclear submarine, with this work focusing on how the improvement of position determination can improve the reconstructed image FWHM. The AGATA A006 detector is a 80x80x90 mm3 HPGe, 36 segment and one core, coaxial detector. The average energy resolution over all the segments and core was found to be 2.7 ke V. This work shows the improvement that parametric pulse shape analysis can make in large detector segments to Compton image reconstruction. Two 1332 keV 60CO sources have been placed in front of the AGATA A006 detector at 100 mm and have been imaged using a simple back projection Compton image reconstruction code developed at the University of Liverpool. A method has been developed to apply parametric PSA to improve the precision of locating the position of interaction within the segments. A GEANT4 simulation has been adapted to replicate the experimental setup utilising a Gaussian smearing function applied to the simulated x, y and z position and energy data to assess the improvement that parametric PSA provides to the discrimination of position within the detector segments. The simulated energy and position smeared data reconstructed image resolution has been compared to the experimental data reconstructed image resolution. It has been found that the parametric PSA method developed in this thesis, will give a position resolution of 3 ± 0.5 mm within the segments of the crystal when compared to a 15 ± 0.5 mm position resolution for data reconstructed without utilising parametric PSA.
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Granat-Janki, Anna. "Symphonies and operas by the Wrocław composer Agata Zubel in the context of genre traditions." Internationale Arbeitsgemeinschaft für die Musikgeschichte in Mittel- und Osteuropa an der Universität Leipzig, 2018. https://ul.qucosa.de/id/qucosa%3A70731.

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Paszko, Agata [Verfasser]. "Freisetzungskinetik des N-terminalen pro-B-Typ natriuretischen Peptids im klinischen Myokardinfarktmodell / Agata Katarzyna Paszko." Gießen : Universitätsbibliothek, 2019. http://d-nb.info/1191094456/34.

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Olszewska, Agata [Verfasser], and Katja [Akademischer Betreuer] Arndt. "Forming magnetic chain with the help of biological organisms / Agata Olszewska ; Betreuer: Katja Maren Arndt." Potsdam : Universität Potsdam, 2015. http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-89767.

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Mossakowski, Agata Anna [Verfasser]. "Funktionelle Echtzeitanalyse der zellulären und molekularen Mechanismen der neuronalen Dysfunktion in chronischer Neuroinflammation / Agata Anna Mossakowski." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2016. http://d-nb.info/1102933376/34.

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Spieß, Agata [Verfasser]. "Validierung der Therapieeffekte einer repetitiven Stochastischen Resonanz-Therapie bei Symptomen des idiopathischen Parkinson-Syndroms / Agata Spieß." Bonn : Universitäts- und Landesbibliothek Bonn, 2014. http://d-nb.info/107727081X/34.

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Augustin, Adolpho Herbert. "Geologia do depósito de Ágata e Ametista da Mina Novo são João, Santana do Livramento, RS." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/12017.

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A Mina Novo São João está localizada em Santana do Livramento, nas proximidades da fronteira sudoeste do Rio Grande do Sul com Uruguai, inserida no contexto da Província de Basaltos de Platô Continental do Paraná. Nesta região são extraídos comercialmente geodos de ágata e ametista, apesar de também ocorrerem variedades de quartzo incolor, leitoso e cornalina. Este estudo registra os resultados do mapeamento geológico da região da Mina Novo São João e da caracterização das inclusões minerais nos cristais de ametista. Os geodos estão alojados em níveis rasos de rochas basálticas, as quais apresentam estruturas de fluxo magmático e fraturas. A rocha encaixante é afanítica, constituída por plagioclásio e clinopiroxênio, associados com quantidades variáveis de ilmenita, magnetita, apatita, quartzo e argilominerais. Associado com os basaltos da Formação Serra Geral ocorrem rochas da Formação Botucatu. O contato abrupto e as estruturas preservadas nestas unidades estratigráficas, tais como estrias de fluxo, moldes de basalto e rochas tipo peperito, sugerem que os derrames basálticos ocorreram num paleo-ambiente desértico ativo. O modo de ocorrência, o tamanho e a forma dos geodos são condicionados por sítios de dilatância relacionados com o fluxo das lavas basálticas. Estes espaços abertos possibilitaram a percolação de fluidos mineralizantes e a precipitação de minerais de sílica resultando na formação de geodos com preenchimento variável. Os cristais de ametista nos geodos contêm inclusões de goethita, halita, silvita e pirita. Além disto, inclusões de fluorita também ocorrem na gema estudada, as quais foram descritas, pela primeira vez, em cristais de ametista do sul do Brasil. A presença de cloretos e fluoretos sugere que as soluções mineralizantes estão relacionadas com fluidos geotermais similares àqueles encontrados em águas subterrâneas retiradas de aqüíferos da Bacia do Paraná. O modo de ocorrência e as associações minerais dos geodos combinados com as estruturas de dilatância das rochas encaixantes sugerem que a formação dos geodos está relacionada com processos epigenéticos de infiltração de águas subterrâneas aquecidas (fluidos geotermais). O conjunto de dados sugere que as seguintes feições podem ser utilizadas como guias prospectivos locais para a localização de áreas-alvo propícias a alojar geodos: (i) rochas com estruturas de dilatância abertas, tais como foliação magmática, fraturas e pods; (ii) ocorrência de fontes de águas minerais termais no contexto da Província de Basaltos de Platô Continental; (iii) presença de quartzo-arenito silicificado, pois este litotipo também teria sido afetado pelo evento que depositou sílica nos geodos. A integração dos dados obtidos mostra que o contexto geológico da área estudada é propício para alojar vários depósitos de geodos, os quais merecem ser pesquisado em trabalhos futuros, a fim de obter uma avaliação do potencial econômico para gemas da fronteira sudoeste do RS.<br>The Novo São João Mine, located within the boundaries of the city of Santana do Livramento, near the border of Brazil and Uruguay, in the Paraná Basalt Continental Flood Province context, produces agate and amethyst geodes. However, in this mine also some occur varieties of cornaline, colourless and milky quartz. This study presents the data obtained during the geologic mapping of the Novo São João Mine as well as the mineral inclusions identified in the amethyst crystals. The geodes occur in shallow levels of the basaltic rocks (Serra Geral Formation) with magmatic flow structures and fractures. The host-rock is constituted by plagioclase and clinopyroxene, which are associated with variable proportions of ilmenite, apatite, quartz and clayminerals. The rocks of Serra Geral Formation are predominant in the mine geologic setting, although the Botucatu Formation also outcrops in this region. The abrupt contact combined with some relicts structures which are preserved in these stratigraphic units (e.g., flow striation, basalt molds and rocks resembling to peperites) suggest that the extrusion of basaltic lavas the desertic environment ative. The occurrence mode, the size and the shape of geodes are conditioned by open spaces related to the basaltic lavas flow. These dilatation spaces allowed the percolation of the mineralizing fluids and the precipitation of silica minerals, which resulted in the geodes formation with variable filling. The amethyst crystals contain inclusions of goethite, halite, sylvite, fluorite and pyrite. This is the first register of fluorite inclusions in amethyst of the southernmost Brazil. The occurrence of chlorides and fluorides in the studied amethyst suggest that mineralizing solutions are related to geothermal fluids similar to those of the subterranean waters of aquifers in the Paraná Basalt Continental Flood Province context. The occurrence mode and mineral assemblage of the geodes combined dilatation structures of the host-rocks suggest that the geodes formation is related to epigenetic process of the infiltration of hot subterranean water (geothermal fluids). The data obtained in this study suggest the following guides to prospect target-areas to host geodes: (i) rocks with dilatation structures such as magmatic foliation, fractures and pods and (ii) springs of thermal waters in the Paraná Basalt Continental Flood Province context. The data integration suggest that the geologic setting of the studied area is adequate to host several geodes deposits around which future workers can build to evaluation the real economic potential of gems in this region.
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38

Starosta, Agata Lucyna [Verfasser], and Roland [Akademischer Betreuer] Beckmann. "Antibiotics and translation : overcoming emerging bacterial resistance to old and new antimicrobials / Agata Lucyna Starosta. Betreuer: Roland Beckmann." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1051777267/34.

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Renans, Agata Maria [Verfasser], Malte [Akademischer Betreuer] Zimmermann, and Judith [Akademischer Betreuer] Tonhauser. "Exhaustivity : on exclusive particles, clefts, and progressive aspect in Ga (Kwa) / Agata Maria Renans ; Malte Zimmermann, Judith Tonhauser." Potsdam : Universität Potsdam, 2016. http://d-nb.info/121840034X/34.

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40

Wszołek, Agata [Verfasser], Uwe [Akademischer Betreuer] Bornscheuer, Uwe [Gutachter] Bornscheuer, and Vlada B. [Gutachter] Urlacher. "Enzymes for the synthesis of bioactive compounds / Agata Wszołek ; Gutachter: Uwe Bornscheuer, Vlada B. Urlacher ; Betreuer: Uwe Bornscheuer." Greifswald : Universität Greifswald, 2020. http://d-nb.info/1219656569/34.

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Grocutt, Laura. "Lifetime measurements of excited states in N-20 sd-pf shell neutron-rich nuclei using AGATA and PRISMA." Thesis, University of the West of Scotland, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.765747.

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Renans, Agata [Verfasser], Malte [Akademischer Betreuer] Zimmermann, and Judith [Akademischer Betreuer] Tonhauser. "Exhaustivity : on exclusive particles, clefts, and progressive aspect in Ga (Kwa) / Agata Maria Renans ; Malte Zimmermann, Judith Tonhauser." Potsdam : Universität Potsdam, 2016. http://d-nb.info/121840034X/34.

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Wszołek, Agata Verfasser], Uwe Theo [Akademischer Betreuer] [Bornscheuer, Uwe Gutachter] Bornscheuer, and Vlada B. [Gutachter] [Urlacher. "Enzymes for the synthesis of bioactive compounds / Agata Wszołek ; Gutachter: Uwe Bornscheuer, Vlada B. Urlacher ; Betreuer: Uwe Bornscheuer." Greifswald : Universität Greifswald, 2020. http://nbn-resolving.de/urn:nbn:de:gbv:9-opus-40215.

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44

Heemann, Roberto. "Modelagem estrutural e tridimensional para a prospecção e avaliação dos depósitos de ágata do distrito mineiro de Salto do Jacuí (RS)." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2005. http://hdl.handle.net/10183/5973.

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O Distrito Mineiro de Salto do Jacuí (DMSJ) abrange uma área aproximada de 250 km2 localizada no Município de Salto do Jacuí na região central do estado do Rio Grande do Sul (Brasil). A região é caracterizada pela ocorrência de derrames basálticos a dacíticos pertencentes a Fm. Serra Geral, uma das unidades de topo da Bacia do Paraná. O DMSJ é um dos maiores produtores mundiais de geodos de ágata que ocorrem em derrames basálticos. Em escala de mina, os depósitos de geodos de ágata do DMSJ ocorrem em uma seqüência vulcânica constituída por 3 unidades líticas principais: 1) o dacito semi-vítreo vesículoamigdaloidal inferior (DSVI), 2) o basalto vesículo-amigdaloidal mineralizado (BM, “tabatinga”), e 3) o dacito vesicular (DV, “cupim”). Essas unidades vulcânicas constituem a denominada Estrutura Jacuí. Essa tese propõe um modelo estrutural para o controle da distribuição dos geodos de ágata no DMSJ e um novo conjunto de procedimentos aplicados para a exploração dos geodos de ágata. A modelagem estrutural 3D e a distribuição espacial dos depósitos e dos tipos de geodos de ágata são avaliados para permitir futuras investigações detalhadas a respeito da estimativa de reservas remanescentes do DMSJ. Mapeamento geológico em escala de mina, análise estrutural e investigação da distribuição espacial dos geodos de ágata foram realizados para desenvolver um modelo 3D do controle estrutural dos geodos de ágata e definir parâmetros de prospecção de geodos de ágata. A modelagem 3D e o controle estrutural da distribuição dos geodos de ágata permitiram definir alguns critérios para investigações quanto à estimativa de recursos/reservas no DMSJ. Nessa linha de investigação, devem-se considerar principalmente os seguintes parâmetros: i) os novos procedimentos para exploração de geodos de ágata, ii) a diluição introduzida pela presença de diques de arenito Botucatu que cortam o Basalto Mineralizado, e iii) o controle estrutural proposto parta os depósitos de ágata do DMSJ. Esses parâmetros são úteis nas atividades de exploração e na avaliação de novas áreas de geodos de ágata. O controle estrutural e a modelagem 3D da distribuição dos geodos de ágata também permitem definir os limites das unidades vulcânicas mineralizadas e a extensão do corpo mineralizado.
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45

Uzarska, Marta Agata [Verfasser], and Roland [Akademischer Betreuer] Lill. "Mechanistic characterization of the late steps of mitochondrial iron-sulfur cluster protein maturation / Marta Agata Uzarska. Betreuer: Roland Lill." Marburg : Philipps-Universität Marburg, 2013. http://d-nb.info/1045729663/34.

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Nelson, Laura. "The Spatial Resolution Achievable with Parametric Pulse Shape Analysis of AGATA Detectors and its Application to In-beam Data." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507709.

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Kurek, Agata [Verfasser]. "Untersuchung des Sexuallebens sowie der Prävalenz von Depressivität und dem metabolischen Syndrom bei Patienten mit Acne inversa / Agata Kurek." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2014. http://d-nb.info/1052221734/34.

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Ralet, Damian [Verfasser], Norbert [Akademischer Betreuer] Pietralla, and Aumann [Akademischer Betreuer] Thomas. "Lifetime measurement in the mass region A~100 with the PreSPEC-AGATA setup / Damian Ralet. Betreuer: Norbert Pietralla ; Aumann Thomas." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2015. http://d-nb.info/1111910286/34.

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Michna, Agata [Verfasser], and Horst [Akademischer Betreuer] Zitzelsberger. "Identification of gene association networks of the cellular radiation response from time-course transcriptomic data / Agata Michna ; Betreuer: Horst Zitzelsberger." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2017. http://d-nb.info/1128594005/34.

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Nagel, Agata [Verfasser], Christina [Akademischer Betreuer] Elschner, hristina [Gutachter] Elschner, and Inga [Gutachter] Hardeck. "Essays on Taxes and Organizational Form Choice: Evidence from Poland / Agata Nagel ; Gutachter: Christina Elschner, Inga Hardeck ; Betreuer: Christina Elschner." Frankfurt (Oder) : Europa-Universität Viadrina Frankfurt, 2019. http://d-nb.info/1193923530/34.

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