Dissertations / Theses on the topic 'Pandi'
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Pandi, Parthasarathy [Verfasser], and N. [Akademischer Betreuer] Zarzalis. "Direct Pore Level Simulation of Heat Transfer in Open Cell Reticulated Porous Ceramics / Parthasarathy Pandi. Betreuer: N. Zarzalis." Karlsruhe : KIT-Bibliothek, 2016. http://d-nb.info/1093559225/34.
Full textKocmanová, Michaela. "Panda a panda." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-410028.
Full textKersey, David C. "Reproductive and adrenal endocrinology of the giant panda (Ailuropoda melanoleuca)." Fairfax, VA : George Mason University, 2008. http://hdl.handle.net/1920/3428.
Full textVita: p. 180. Thesis director: Thomas C. Wood. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Environmental Science and Public Policy. Title from PDF t.p. (viewed Mar. 17, 2009). Includes bibliographical references (p. 156-179). Also issued in print.
MONSALVE, Johanna Gil. "Oscilação da magnetização em nanocompósitos de Fe3O4/PANI e γFe2O3/PANI." Universidade Federal de Pernambuco, 2017. https://repositorio.ufpe.br/handle/123456789/22658.
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Estudos recentes mostram que o nanocompósito Fe3O4/PANI tem propriedades magnéticas interessantes, como oscilações sustentadas na magnetização, que foram interpretadas como o resultado de uma reação química oscilante que faz que uma fração do conteúdo de magnetita seja transformada em maghemita e vice-versa [1]. Neste trabalho fizemos estudos adicionais. Variamos parâmetros como temperatura, tipo e concentração de ácidos, além de usar como ponto de partida óxidos comerciais e de tamanho maior. Produzimos ainda nanocompósitos Fe2O3/PANI sob as mesmas condições usando Fe2O3 ao invés de Fe3O4. Para os nanocompósitos produzidos estudamos as propriedades magnéticas e estruturais e a cinética química da reação através da magnetização da solução precursora. Os nanocompósitos Fe3O4/PANI e Fe2O3/PANI foram preparados sob UV (365nm) a diferentes tempos de exposição e sob aquecimento (40, 60 e 80 °C), mediante a dispersão das nanopartículas de magnetita e maghemita em uma solução ácida de anilina. Para o estudo de suas propriedades foram usadas medidas de difração de raios X (DRX), análises termogravimétricas e de calorimetria de varredura diferencial (TGA e DSC). Para a caracterização magnética foi usado um magnetômetro de amostra vibrante (VSM) para obter curvas de histereses, plot de Henkel, verificação das mudanças na transição de Verwey e estudo da cinética química a partir da magnetização da solução líquida precursora dos nanocompósitos. Este último resultado foi analisado segundo modelo presa-predador de Lotka Volterra, um modelo simples, qualitativo, para esse sistema relativamente complexo e caótico. As curvas de histerese dos nanocompósitos sintetizados a 40 ºC mostraram oscilações na magnetização; enquanto que para 60 e 80 °C sob UV mostraram um decréscimo acentuado na magnetização máxima com o tempo de reação. As curvas do plot de Henkel mostraram que predominam efeitos de interação de natureza desmagnetizante. Foi observada a transição Verwey, mas deslocada da temperatura típica para os nanocompósitos sintetizados a 40 ºC, sugerindo que isso seja uma evidência das mudanças do número de oxidação do Fe provocados pela polimerização e radiação UV. Finalmente, usando o modelo Lotka-Volterra e suas propriedades matemáticas intrínsecas, verificamos o efeito nos parâmetros do modelo provocados pela mudança de alguns parâmetros importantes da reação. A caracterização estrutural mediante DRX mostraram que todas as nanopartículas são cristalinas exceto para as amostras de 80 ºC após de 1 h de reação. Os difratogramas para as amostras de Fe3O4/PANI tratadas a 60 ºC mostraram um deslocamento dos picos característicos indicando a transformação magnetita/maghemita/magnetita. Aparece também uma nova fase cristalina, a qual foi indexada como hematita. Por outro lado, não há variações muito significativas do tamanho de cristalito para Fe3O4/PANI, enquanto que para os nanocompósitos Fe2O3/PANI tratados a 60 ºC há um leve aumento no tamanho de cristalito com o tempo de síntese, assim como com o aumento na temperatura. A análise TGA e DSC mostrou que a polimerização é favorecida pelo calor e pelo tempo de reação. Além disso, conforme o esperado pelo modelo proposto por A. C. V de Araújo e col. [1], a polimerização para os nanocompósitos Fe2O3/PANI é mais acelerada que Fe3O4/PANI.
Recent studies show that the Fe3O4/PANI nanocomposite has interesting magnetic properties, such as sustained oscillations in magnetization, which have been interpreted as the result of an oscillating chemical reaction that causes a fraction of the magnetite content to be transformed into maghemite and vice-versa [1]. In this work we did additional studies. Where we had changed parameters such as temperature, type and concentration of acids, as well as using commercial oxides with larger sizes. We have also produced Fe2O3/PANI nanocomposites under the same conditions using Fe2O3 instead of Fe3O4. For the produced nanocomposites, we have studied the magnetic and structural properties as well as the chemical kinetics of the reaction through the magnetization of the precursor solution. The Fe3O4/PANI and Fe2O3/PANI nanocomposites were prepared under UV (365 nm) at different exposure times and under heating (40, 60 and 80 °C) by dispersing the nanoparticles of magnetite and maghemite in an acid solution of aniline. X-ray diffraction (XRD), thermogravimetric and differential scanning calorimetry (TGA and DSC) measurements were used to study their properties. For the magnetic characterization, a vibrating sample magnetometer (VSM) was used to obtain hysteresis curves, Henkel plot, verify changes in the Verwey transition and study the chemical kinetics from the magnetization of the liquid precursor solution of the nanocomposites. This last result was analyzed according to the prey-predator model of Lotka-Volterra, a simple, qualitative model for this relatively complex and chaotic system. The hysteresis curves of the nanocomposites synthesized at 40 ºC showed oscillations in the magnetization; while for 60 and 80 °C under UV showed a marked decrease in the maximum magnetization as function of the reaction time. Henkel plot curves showed that the interaction effects have a predominant demagnetizing nature. Verwey transition was observed, but displaced from the typical temperature for the 40 ºC synthesized nanocomposites, suggesting that this is an evidence of the changes in the oxidation number of Fe caused by polymerization and UV radiation. Finally, using the Lotka-Volterra model and its intrinsic mathematical properties, we verified the effect on the parameters of the model caused by the change of some important parameters of the reaction. The structural characterization by XRD showed that all the nanoparticles are crystalline except for the 80 ºC samples after 1 h of reaction. The diffractograms for the Fe3O4/PANI samples treated at 60 °C showed a shift of the characteristic peaks indicating a magnetite/maghemite/magnetite transformation. A new crystalline phase was observed, which was indexed as hematite. On the other hand, there are not significant variations of the crystallite size for Fe3O4/PANI, whereas for the Fe2O3/PANI nanocomposites treated at 60 °C there is a slight increase in the crystallite size over time as well as with the increase in temperature. The TGA and DSC analysis showed that polymerization is favored by heat and reaction time. In addition, as expected by the model proposed by A. C. V de Araújo et al. [1], the polymerization for the Fe2O3/PANI nanocomposites is more accelerated than for Fe3O4/PANI.
Huang, Kefan. "Shaping an Iconic Species : From the giant panda to the red panda and the Tibetan antelope." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-413329.
Full textKelling, Angela S. "Simple visual discrimination training of the giant panda (Ailuropoda melanoleuca)." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04072004-180031/unrestricted/kelling%5Fangela%5Fs%5F200312%5Fms.pdf.
Full textANDRADE, Gilson Ferreira de. "Estudo de revestimentos orgânicos contendo pigmentos Pani-ADBS e Pani-Fe3O4 para prevenção de corrosão." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/18007.
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O presente trabalho trata da obtenção de tinta utilizando dois pigmentos em dois vernizes diferentes (Epóxi–Ep e Poliuretana–PU) e dos testes de eficiência dessas tintas para prevenção da corrosão em aços. Um pigmento a base de Polianilina (Pani) na presença do ácido dodecilbenzeno sulfônico (ADBS) e o outro a base do compósito Pani-Fe3O4. A Pani sintetizada quimicamente foi secada a vácuo e caracterizada pelas técnicas de espectroscopia de Infravermelho e de UV/Vis. As placas de aço carbono SAE 1006 com e sem revestimentos foram submetidas a ensaio cíclico de corrosão em uma câmara de névoa salina (CNS). O monitoramento da corrosão foi feito por análises de fotografia e microscopia óptica. A interação camada-substrato foi investigada por meio da espectroscopia de impedância eletroquímica (EIE) e a superfície dos revestimentos por Espectroscopia Raman. No geral, os resultados indicaram que a Pani-ADBS teve maior desempenho no verniz Ep do que no verniz PU, enquanto o pigmento Pani-Fe3O4 apresentou maior desempenho no verniz PU. Existe evidência de que a Pani-ADBS adicionada ao Ep, na concentração de 0,1%, resulta em melhor proteção do aço ao final do ensaio de 30 dias. O indicativo pode ser visto pela maior resistência (3,95 x 109 ·cm2) e menor capacitância (7,14 x 10-11 F·cm-2). Discussão similar também pode ser feita com o revestimento PU, uma vez que ele apresentou maior resistência da camada (9,81 x 108 ·cm2) e menor capacitância (8,06 x 10-11 F·cm-2). Essa evidência também foi observada pelos resultados de potencial de circuito aberto (Eca). O espalhamento Raman detectou indícios de degradação química dos revestimentos Ep e PU. Baseado nos resultados obtidos neste trabalho é razoável a utilização do modelo ácido-base para explicar o mecanismo de proteção do aço pelos pigmentos Pani-ADBS e Pani-Fe3O4. O mecanismo de proteção do aço ainda carece de mais estudos, entretanto os resultados de potencial de circuito aberto e impedância eletroquímica sugerem que o mecanismo de proteção pode ser explicado por barreira física e em termos de compatibilidade entre o pigmento e a matriz polimérica.
This work describes the production of paints using two pigments in two different polymer matrices (epoxy-Ep and polyurethane-PU) and tests efficiency of these formulations in the prevention of corrosion in steel. A Polyaniline (Pani) based pigment in the presence of a functionalized protonic acid, known as dodecylbenzene sulfonic acid (DBSA) and the other based on Pani-Fe3O4 composite. The chemically synthesized Pani powder was vacuum-dried and characterized by infrared spectroscopy and UV/Vis. The paints were applied to metallic carbon steel SAE 1006 plates. The plates were subjected to cyclic corrosion essay to test the performance of the coatings against corrosion. The film-substrate interaction was investigated by electrochemical impedance spectroscopy (EIS). Raman spectroscopy was used for chemical analysis of surface coatings. It was observed that the Pani-DBSA had its most pronounced effect on the epoxy varnish than in the polyurethane varnish. While the pigment Pani-Fe3O4 showed better performance in the polyurethane varnish. There is evidence that PANI-DBSA added to the Ep at a concentration of 0.1% results in better protection of steel at the end of the 30 day test. This indication can be seen by the increased resistance (3.95 x 109 ·cm2) and a lower capacitance (7.14 x 10-11 F·cm-2). Similar discussion can also be done with the PU coating, as it showed the highest resistance (9.81 x 108 ·cm2) and a lower capacitance (8.06 x 10-11 F·cm-2). These results were confirmed by open circuit the potential (Eoc). The Raman scattering detected chemical evidence of Ep and PU coatings degradation. According to the results obtained in this study, it is reasonable to use the acid-base model to explain the steel protective mechanism by Pani-DBSA and Pani-Fe3O4 pigments. The steel protection mechanism still needs more studies; however, the results of open circuit potential and electrochemical impedance suggest that the protection mechanism can be explained by a physical barrier and in terms of polarity between pigment and matrix.
Nyberg, Jakob. "Panda Cloud System Management Stjärna Fyrkant Umeå." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105411.
Full textSerneguet, Sorli Alvaro. "A multichannel digitizer for the PANDA experiment." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-229578.
Full textYu-Shan, Chevez Abril Victoria. "Response of Flooded Asphalt Pavement using PANDA." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/96521.
Full textMaster of Science
Moisture damage is one of the major causes of deterioration of pavements. An example is the damage caused by flooding. While the effects of pore water pressure in pavement have been studied using finite element modeling, few of the models have accurately modeled the behavior of the asphalt concrete and have not considered the realistic loading conditions. Consequently, a three-dimensional finite element simulation was developed to accurately simulate and analyze the detrimental effects of saturated layers in asphalt pavements. In addition, a parametric study is conducted to analyze the response of pavements with varying surface and base thickness, base and subgrade permeability, and vehicle speeds under different level of saturation. The results indicate that the effects of pore water pressure be considered in the design of pavements in flood-prone areas and in the proposal of flood management plans. Ultimately, the implementation of a "flood resilient" asphalt pavement could be effective in reducing the cost of road restoration and repair in flood-prone areas.
Ma, Binsong. "Simulation of electromagnetic channels for PANDA@FAIR." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112234/document.
Full textThe multi-purpose detector PANDA (antiProton Annihilation at Darmstadt) will be built at the antiproton storage ring of the FAIR accelerator complex that is under construction in Darmstadt and is expected to provide its first beam in 2019. The fixed target experiment PANDA is a state of the art hadronic physics detector. With PANDA, one can explore a wide range of topics including meson spectroscopy, search for new states of matter such as glue balls and hybrids, charmed and multi-strange baryon spectroscopy, hyper-nuclei, and properties of hadrons in nuclei. Proton antiproton annihilation reactions will also allow to study the structure of nucleons, in particular by exploiting the electromagnetic channel of electron-positron pair production which is the subject of this thesis.One major problem with studies of electromagnetic channels is the hadronic background with cross-sections at least six orders of magnitude larger than the signal, requiring excellent particle identification and good momentum resolution. However the momentum reconstruction for electrons and positrons is degraded due to the emission of Bremsstrahlung photons along their path. In the first part of this thesis, I studied this problem and developed a method based on the correction of the momentum of electrons and positrons event by event, using Bremsstrahlung photons detected in the electromagnetic calorimeter. This method, which has been integrated into PANDAroot, the official PANDA reconstruction code, provides a significant improvement of momentum resolution for electrons, and will be exploitable by any measurement with electron-positron pair in the exit channel.In the second part, I performed a feasibility study of measuring the reaction antiproton p →J/Ψ π⁰ using predictions from a model based on pion-nucleon TDAs (Transition Distribution Amplitudes). TDAs are non-perturbative objects that describe the transition between two particles of different nature. For example, pion-nucleon TDAs contain information about the pionic components in the nucleon's wave function. For this study, I relied on the TDA model to create an event generator, and studied the capability to reject hadronic background. The improvement of the efficiency for the signal due to the Bremsstrahlung correction method was quantified. This study can be used as basis for a proposal of an experiment with PANDA
Lyon, Lauren M. "Niche Modeling for the Giant Panda, Ailuropoda melanoleuca, and the Original Panda, Ailurus fulgens: Habitat Preferences and Evolutionary Consequences." Digital Commons @ East Tennessee State University, 2017. https://dc.etsu.edu/etd/3234.
Full textJahuira, Huarcaya Viviana Rita. "Actividad antitusiva del extracto acuoso liofilizado de flores de Cosmos peucedanifolius Wedd. (Panti panti) en cobayos, investigación toxicológica en ratones." Doctoral thesis, Universidad Nacional Mayor de San Marcos, 2010. https://hdl.handle.net/20.500.12672/15138.
Full textTesis
Perdue, Bonnie Marie. "Spatial memory recall in the giant panda (ailuropoda melanoleuca)." Thesis, Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26482.
Full textFERREIRA, Ana Linda Tiago Soares. "Imobilização de Beta Galactosidase em Sephadex-Pani." Universidade Federal de Pernambuco, 2009. https://repositorio.ufpe.br/handle/123456789/17473.
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CAPES
A β-Galactosidase de Aspergillus oryzae foi imobilizada covalentemente em Sephadex G-50 revestido com polianilina (Sephadex-PANI), via glutaraldeído e disposta em coluna vertical (2cm x 10 cm). A microscopia eletrônica de varredura e a analise elementar mostrou a superfície rugosa das pérolas do Sephadex alteradas e a presença de nitrogênio respectivamente após o revestimento com PANI. O fluxo da coluna foi testado (0,125-1,25 mL min-1) e 0,8 mL min-1 foi estabelecido como sendo a melhor condição. A atividade da coluna do derivado enzimático (Sephadex-PANI-β-Galactosidase) foi realizada circulando na coluna uma solução de ortho-nitrophenyl-β-galactoside (ONPG; 3 mL) a um fluxo de 0,8 mL min-1 e o derivado enzimático (Sephadex-PANI-β-Galactosidase) apresentou um pH ótimo (4,5) e temperatura ótima (50 °C) semelhante ao da enzima livre. A quantidade de enzima imobilizada e a retenção específica de atividade enzimática comparada com a enzima solúvel foram 100% e 90%, respectivamente. O derivado enzimático foi reutilizado 10 vezes retendo cerca de 100% da atividade inicial e armazenado por aproximadamente dois anos mantendo 90% da sua atividade. A lactose do leite foi parcialmente convertida em glicose e galactose ao ser circulado na coluna de Sephadex-PANI-β-Galactosidase. Assim, a coluna do derivado enzimático (Sephadex-PANI-β-Galactosidase) pode ser proposta para a remoção contínua de lactose do leite. Futuramente, outras enzimas poderão ser covalentemente imobilizadas em colunas de Sephaedx-PANI e usadas em aplicações biotecnológicas.
β-Galactosidase from Aspergillus oryzae was covalently immobilized onto Sephadex G-50 coated with polyaniline (Sephadex-PANI), via glutaraldehyde, and arranged in a vertical column. The scanning electron microscopy and elemental analyses showed the rugose surface of the Sephadex beads altered and the presence of nitrogen, respectively, after PANI coating. The activity of the Sephadex-PANI-β-Galactosidase column (2cm x 10 cm) was assayed by circulating a solution of ortho-nitrophenyl-β-galactoside (ONPG; 3 mL) at a flow rate of 0.8 mL min-1 and its optima pH and temperature were found to be 4.5 and 50 °C, respectively, similar to those estimated for the free enzyme. The amount of immobilized protein and retention of specific enzymatic activity compared with the free enzyme were 100% and 90%, respectively. The enzymatic column was reused 10-times retainning about 100% of its initial activity. When stored for almost two years the derivative retained about 90% of its initial activity. Milk lactose was partially converted to glucose and galactose by circulating it through the Sephadex-PANI-β-Galactosidase column. Therefore, column of Sephadex-PANI-β-Galactosidase can be proposed for the continuos remotion of lactose from milk. Furthermore, other enzymes can be covalently immobilized on Sephaedx-PANI column and applied in biotechnology.
Benz-Navarrete, Miguel-Angel. "Mesures dynamiques lors du battage du pénétromètre PANDA 2." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2009. http://tel.archives-ouvertes.fr/tel-00725564.
Full textKliemt, Ralf [Verfasser]. "Simulations with the Panda Micro-Vertex-Detector / Ralf Kliemt." Bonn : Universitäts- und Landesbibliothek Bonn, 2014. http://d-nb.info/1077387008/34.
Full textThomé, Erik. "Multi-Strange and Charmed Antihyperon-Hyperon Physics for PANDA." Doctoral thesis, Uppsala universitet, Kärnfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-182450.
Full textPanda, Emila [Verfasser]. "The initial oxidation of Al-Mg alloys / Emila Panda." Stuttgart : Max-Planck-Inst. für Metallforschung, 2009. http://d-nb.info/1000621103/34.
Full textKliemt, Ralf [Verfasser]. "Simulations with the Panda Micro-Vertex-Detector / Ralf Kliemt." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1045276472/34.
Full textBenz-Navarrete, Miguel Angel. "Mesures dynamiques lors du battage du pénétromètre PANDA 2." Clermont-Ferrand 2, 2009. http://www.theses.fr/2009CLF21930.
Full textRINALDI, TERESA. ""Mettersi nei panni degli altri": dalle misure alle applicazioni." Doctoral thesis, Università Cattolica del Sacro Cuore, 2020. http://hdl.handle.net/10280/92534.
Full textThis thesis explores, from a theoretical and applicative perspective, the ability to "put oneself in the shoes of others", defined as a life-span construct, which develops from early childhood but does not stop evolving until adulthood. Its developmental trajectory is linked to the context, interactions, experiences and cognitive and emotional development of individuals. The literature shows how this capacity is often the subject of conceptual overlaps with other constructs of developmental psychology such as the "Theory of Mind" (Premack & Woodruff, 1978; Wimmer & Perner, 1985), also known as "mindreading" (Baron-Cohen, Jolliffe, Mortimore & Robertson, 1997); perspective-taking (Carpendale & Lewis, 2006; Moll & Meltzoff, 2011; Sullivan, Bennett, Carpenter & Lewis, 2008); the "reflective function" (Fonagy & Target, 1997); and "mentalisation" (Fonagy, Bateman & Luyten, 2012). Thanks to the in-depth study of these constructs, we come to understand that they are often declined with the concept of mentalisation, which is analysed in its historical evolution and in relation to other constructs such as the attachment bond (Bowlby, 1969) and mind-mindedness (Meins, 2002). The analysis of the construct continues with the presentation of three research works that explore it, from a theoretical point of view (the first two) and from an applicative point of view (the third), from its maximum evolution in adulthood to its manifestation and enhancement in developmental age. The first research focuses on the Italian validation of a scale measuring mentalized affectivity, a construct that integrates mentalization in adulthood into the process of emotion regulation. The second examines how the ability to "put oneself in the shoes of others", which is consolidated in preadolescence, manifests itself within the attachment bonds between children and teachers and finally, the third work studies whether this ability can be improved in the school context and have an impact on relational and social constructs linked to economic decision-making, such as fairness, altruism and donation.
RINALDI, TERESA. ""Mettersi nei panni degli altri": dalle misure alle applicazioni." Doctoral thesis, Università Cattolica del Sacro Cuore, 2020. http://hdl.handle.net/10280/92534.
Full textThis thesis explores, from a theoretical and applicative perspective, the ability to "put oneself in the shoes of others", defined as a life-span construct, which develops from early childhood but does not stop evolving until adulthood. Its developmental trajectory is linked to the context, interactions, experiences and cognitive and emotional development of individuals. The literature shows how this capacity is often the subject of conceptual overlaps with other constructs of developmental psychology such as the "Theory of Mind" (Premack & Woodruff, 1978; Wimmer & Perner, 1985), also known as "mindreading" (Baron-Cohen, Jolliffe, Mortimore & Robertson, 1997); perspective-taking (Carpendale & Lewis, 2006; Moll & Meltzoff, 2011; Sullivan, Bennett, Carpenter & Lewis, 2008); the "reflective function" (Fonagy & Target, 1997); and "mentalisation" (Fonagy, Bateman & Luyten, 2012). Thanks to the in-depth study of these constructs, we come to understand that they are often declined with the concept of mentalisation, which is analysed in its historical evolution and in relation to other constructs such as the attachment bond (Bowlby, 1969) and mind-mindedness (Meins, 2002). The analysis of the construct continues with the presentation of three research works that explore it, from a theoretical point of view (the first two) and from an applicative point of view (the third), from its maximum evolution in adulthood to its manifestation and enhancement in developmental age. The first research focuses on the Italian validation of a scale measuring mentalized affectivity, a construct that integrates mentalization in adulthood into the process of emotion regulation. The second examines how the ability to "put oneself in the shoes of others", which is consolidated in preadolescence, manifests itself within the attachment bonds between children and teachers and finally, the third work studies whether this ability can be improved in the school context and have an impact on relational and social constructs linked to economic decision-making, such as fairness, altruism and donation.
Steinen, Marcell [Verfasser]. "Feasibility studies for the high precision X-ray spectroscopy of heavy Ξ− hyperatoms at PANDA using the PANda GErmanium Array PANGEA / Marcell Steinen." Mainz : Universitätsbibliothek Mainz, 2020. http://d-nb.info/1211846660/34.
Full textWoolaway, Kathryn. "Internal translation initiation of Rhopalosiphum padi virus mRNA." Thesis, University of Surrey, 2002. http://epubs.surrey.ac.uk/843126/.
Full textCristovan, Fernando Henrique. "Preparação e caracterização de blendas de PANI/ABS." Universidade Federal de São Carlos, 2009. https://repositorio.ufscar.br/handle/ufscar/6116.
Full textFinanciadora de Estudos e Projetos
Polyaniline (PANI) chemical synthesis was monitored in situ by means of electrochemical impedance, open circuit potential (Voc) and mass variation. We verify that the final properties of the polymer could be practically defined after inflection point in the potential profile. The impedance data were decisive to understand this behavior, showing only a small change after inflection point. Impedance results and mass variations during the synthesis contributed to understand the induction mechanisms that occur in the initial stages of the polymerization process. Also, it was performed an investigation on the influence of different variables (temperature, monomer:oxidant molar ratio, oxidant, pH value, use of inert salts at high concentrations) in the PANI chemical synthesis process as well as in its physicochemical properties. In this work, it was estimated the characteristic points of PANI through the Voc measurements during the chemical synthesis, based on an experimental design methodology. This methodology allowed an efficient mapping of PANI synthesis process as well as its interactions with each variable previously described. The results indicated that the oxidant employed in the synthesis influences in the final chemical and physical properties of this polymer. The studies performed on the final properties of PANI were the degree of oxidation and electric resistivity. Moreover, the yield the degree of polymerization was also evaluated. The experimental design methodology was also used in order to understand the influence of the preparation conditions on the final properties of the blends in poly(acrylonitrile-butadiene-styrene) (ABS) and polyaniline obtained by the co-dissolving components in a common organic solvent. The variables evaluated were the PANI content in the blend, m-cresol:chloroform rate (solvent ratio), dopant (DBSA or CSA) and acrylonitrile content in the ABS. The results showed that these variables are able to change significantly the flexibility and electric conductivity of the blends. On the other hand, the dopant used mainly influences in the conductivity, suggesting that the DBSA is the better for the development of PANI/ABS blends more conductive. After better prepare conditions of the blends, the percolation threshold was established at around 3 wt% of PANI, forming a flexible blend with conductivity of approximately 3 S.cm-1. The optical properties of the blend films were characterized by UV Vis-NIR. The conduction mechanisms of the blends were investigated using a dc electric conductivity in the range from 80 to 320 K. Using the Mott s theory, it was found that the conductivity in the blends is a threedimensional variable range hopping mechanism. The Mott s temperature values, density of states at the Fermi energy, average hopping distance and barrier height for the blends were calculated and discussed in this work. Also, two possible technological applications were proposed to the PANI/ABS system, including: composite varistors and antistatic or electromagnetic protection of electronic devices. The varistors were prepared with 30% of PANI, which showed a low rupture voltage at around 10 V and a non linearity coefficient of approximately 9,2. On the paint shape and when deposited on cardboard, this material can be employed as protector system of electronic devices. Another important characteristic is the conductivity of this material, which is controlled by the number of paint layers deposited on the cardboard.
A síntese química da polianilina (PANI) foi monitorada in situ por meio das técnicas de impedância eletroquímica, potencial de circuito aberto (Voc) e variação de massa. Foi detectado que as propriedades finais do polímero são definidas logo após o do máximo da curva de Voc e antes do platô final. Os dados de impedância foram decisivos para o entendimento desta característica, apresentando somente uma pequena variação depois do máximo de Voc. Os dados de impedância e variação de massa durante a síntese também contribuíram para a compreensão dos processos que ocorrem durante o período de indução da síntese da PANI. Em seguida, foi feita uma investigação da influência das variáveis de síntese tais como: temperatura, razão monômero:oxidante, tipo de agente oxidante, pH e o uso de LiCl na síntese química da PANI, bem como nas propriedades físico-químicas do polímero obtido. Para avaliar as influências destas variáveis na síntese da PANI foi utilizada a técnica de Voc e para avaliar pontos característicos foi empregada a metodologia de planejamento fatorial. Esta técnica permitiu estabelecer um rápido e compreensivo mapeamento do processo de síntese da PANI, e a importância de cada variável bem como suas interações. A variável que mais influenciou em todos os estágios do processo foi tipo de agente oxidante. Depois, foram estudas as propriedades finais do polímero tais como grau de oxidação e resistividade elétricas. O rendimento de polimerização também foi avaliado, todas estas respostas também foram avaliadas utilizando um planejamento fatorial que, por sua vez, mostrou que a variável que mais influencia nas propriedades finais do polímero é o tipo de agente oxidante. Em um segundo momento, foram estudadas as influências das condições de preparo das blendas de PANI com o poli(acrilonitrila-butadieno-estireno) (ABS) preparadas pelo método de codissolução de ambos os componentes em um solvente comum através de um planejamento fatorial. As variáveis estudadas foram: quantidade de PANI nas blendas, razão m-cresol;clorofórmio, tipo de dopante (DBSA ou CSA), concentração de dopante e teor de acrilonitrila no ABS. As respostas monitoradas foram a flexibilidade e a condutividade elétrica das blendas obtidas. Os resultados mostraram que a quantidade de PANI nas blendas e o teor de acrilonitrila no ABS foram as variáveis que mais influenciaram em ambas as respostas. O tipo de dopante mostrou somente influência na resposta condutividade, onde o DBSA se mostrou o melhor dopante para se obter blendas de PANI/ABS mais condutoras. Depois das melhores condições de preparo estabelecidas, o limite de percolação do sistema foi determinado, onde o valor estimado foi de 3% em massa de PANI na blenda, apresentando uma condutividade de 3 S.cm-1. Para se compreender o mecanismo de condutividade das amostras, foi feito um estudo da condutividade DC das blendas no intervalo de temperatura de 80-320 K. Os dados foram tratados aplicando a teoria de Mott, onde o mecanismo de condutividade obedece ao modelo de Saltos de Tamanhos Variáveis em três dimensões, e os parâmetros de Mott foram estimados. Duas aplicações para o sistema PANI/ABS foram propostas. Onde preparados compósitos varistores de PANI/ABS, sendo que o material preparado com 30% de PANI apresentou uma tensão de ruptura de aproximadamente 10 V e um coeficiente de não linearidade de 9,2, com estes valores o compósito pode ser utilizado na proteção de equipamentos eletrônicos. Na outra aplicação proposta neste trabalho, foi preparada uma tinta de PANI-DBSA/ABS, que foi depositada sobre papelão, a resistência elétrica do material pode ser controlada pelo número de camadas de tinta. Deste modo o material pode ser utilizado na proteção antiestática e eletromagnética também de componentes eletrônico.
Anderson, Clare. "Kala Pani : Indian convicts in Mauritius, 1815-1853." Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/21268.
Full textNordhage, Örjan. "On a Hydrogen Pellet Target for Antiproton Physics with PANDA." Doctoral thesis, Uppsala University, Department of Nuclear and Particle Physics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7137.
Full textThe PANDA experiment is a part of the future FAIR accelerator facility and will study the strong interaction by detecting the reaction products from antiproton-proton annihilations in a near full solid-angle configuration. One option for the internal proton target in PANDA is frozen micro-spheres of hydrogen, so-called pellets.
Such a pellet target is interesting because of the unique characteristics it offers; the high target thickness, the small interaction volume, the minimal gas load on the vacuum system, and the possibility of tracking individual pellets. Nevertheless, it is possible to allocate the bulky equipment needed to produce the pellets at a few meters away from the beam. This way particle detectors can be located close and almost fully around the interaction point.
This thesis is devoted to the optimization of a pellet target. To perform measurements, a Pellet-Test Station was built at The Svedberg Laboratory, Uppsala. For the first time, experimental results show the pellet distribution in space and time, and in addition, the vacuum along the pellet pipes. Furthermore, dedicated measurements carried out at CELSIUS/WASA demonstrate the existence of pellet heating as a result of beam-target interactions.
In performing calculations, the potential problems with pellet heating at PANDA are outlined. Moreover, to look at the consequences for the desired physics, a reaction involving short-lived D-mesons has been used to show the advantages of pellets compared to a more spacious target.
In conclusion, these studies lead to a deeper understanding of the pellet properties, which makes it possible to suggest future improvements, such as cooling with no vibrations.
Nordhage, Örjan. "On a hydrogen pellet target for antiproton physics with PANDA /." Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7137.
Full textLöfgren, Johan. "Vacuum calculations for hydrogen pellet targets at WASA and PANDA." Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-222973.
Full textPotužáková, Karolína. "Změna v přístupech v SEO po updatech Penguin a Panda." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-198614.
Full textMorisset, Natalie Carleton University Dissertation Geology. "Stableisotope and radioisotope geochemistry of the Panda Hill carbonatite, Tanzania." Ottawa, 1992.
Find full textPantaleoni, Marco <1995>. "Un ponte finanziario tra Italia e Cina: i Panda Bonds." Master's Degree Thesis, Università Ca' Foscari Venezia, 2019. http://hdl.handle.net/10579/16083.
Full textSun, Pei. "The Effect of Early Rearing Experience on Adult Reproductive Behavior in Captive Giant Pandas and Spectacled Bears." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7618.
Full textTun, Hein Min. "Microbial community structure and function in the gut of giant panda (Ailuropoda melanoleuca)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/197106.
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Biological Sciences
Doctoral
Doctor of Philosophy
Sandhaus, Estelle Ann. "Variation of Feeding Regimes: Effects on Giant Panda (Ailuropoda melanoleuca) Behavior." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7617.
Full textSnyder, Rebecca Jo. "A behavioral and hormonal study of giant Panda (Ailuropoda Melanoleuca) reproduction." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/29528.
Full textCowie, Euan Niall. "Development of a prototype for the novel disc DIRC for PANDA." Thesis, University of Glasgow, 2013. http://theses.gla.ac.uk/4334/.
Full textMelo, Luciana de Oliveira. "Blendas condutoras a base de água para proteção à corrosão." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/46/46132/tde-28032007-180524/.
Full textThe development of water-based conducting blends has not yet been very much explored and it presents itself as an interesting alternative to the use of polluting compounds such as chromates in the protection of metals from corrosion. The conducting polymers present anti-corrosion properties and can be processed in aqueous medium, eliminating the use of organic solvents, which are highly toxic and threatening to the environment. This thesis is based on the study of protection from metallic corrosion using poly(aniline) (PANI) coating blends. The blends have been obtained by mixing a PANI aqueous suspension with a poly(methyl metacrylate) aqueous dispersion. Techniques such as zeta potential, dynamic light scattering, thermal analysis and scanning electronic microscopy allowed the characterization of the homogeneous mixture obtained. Measurements carried out by the four-point probe method showed that the blends present conductivity even despite low PANI quantities. In addition, the Raman spectroscopy technique showed the presence of the conducting form of this polymer on the blend films. Techniques such as optical microscopy, open-circuit potential, linear voltammetry and impedance spectroscopy allowed the evaluation of the corrosion protection of the iron, copper, and nickel metallic electrodes coated with PANI blend films in different corrosives mediums. The blends showed efficiency against corrosion and they are therefore a new environmentally friendly material for metallic corrosion protection.
Pagotto, Josias Falararo. "Métodos de proteção contra a corrosão de ligas metálicas." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-24022014-111216/.
Full textIn this work TIG (Tungsten Inert Gas) welds have been studied in the 304 and 316 stainless steels, and in the 1020 carbon steel. The changes in the microstructure were investigated by optical microscope (OM) and scanning electronic microscope (SEM), and the corrosion behavior in these zones were studied by potentiodynamic polarization analysis. A miniaturized corrosion analysis device, named corrosion punctual sensor, has been used to analyze the close weld bead, researching for the influence of the weld current in the corrosion process in this zone of the 304 and 316 stainless steels. The results showed that the change in the crystalline structure of the weld zone became this region less susceptible to corrosion process than their base material, and the increase in the weld current intensified this effect, by the formation of more compact structures. In the case of the 1020 carbon steel (more susceptible to corrosion processes), the corrosion in its weld zone was researched by global (like open potential circuit, OCP, and electrochemical impedance spectroscopy, EIS) and localized (like localized electrochemical impedance spectroscopy, LEIS, and scanning vibrating electrode technique, SVET) electrochemical techniques. For protecting stainless steels and their weld zones against corrosion processes, a polyaniline (PAni) coating in the emeraldine base form was used; potentiodynamic polarization analysis showed the efficiency of this protective coating. For the 1020 carbon steel, due to its mayor oxidation susceptibly, a protective coating of PAni and TiO2 nanotubes (PAni/n-TiO2) was synthesized. The variables researched were: synthesis temperature, reaction medium, degree of doping of the polymer (conductor or insulator) and number of layers. The polymers and composites were characterized by ultraviolet visible (UV-vis) and infrared spectroscopies, SEM and Energy Dispersive X-Ray Spectroscopy (EDX). The coated steels were analyzed by OM, MEV and EDX spectroscopies, and by potentiodynamic polarization, OCP and polarization resistance electrochemical measurements, besides accelerate corrosion tests in a salt spray chamber. The best conditions found for the dedoped PAni/n-TiO2 coatings (emeraldine base) were: temperature of synthesis of 25°C, H2SO4 as reaction medium, and with 3 layers; n-TiO2 has presented an effect of increasing the adherence of the coating with the steel.
Jäkel, René. "Resolution Studies for the Micro Vertex Detector of the PANDA Experiment and the Reconstruction of Charmed Mesons for Specific Hadronic Channels." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-25497.
Full textDas PANDA Experiment wird Teil der geplanten Ausbaustufe FAIR als Erweiterung zur GSI und wird die Untersuchung von hadronischen Reaktionen in Antiproton-Proton Annihilationen ermöglichen. Durch die zu erwartende exzellente Strahlqualität und hohe Luminosität ergeben sich vielfältige Möglichkeiten zur Untersuchung von Hadronenwechselwirkungen, wie beispielsweise die genaue Spektroskopie des Charmoniumsystems. Um vielfältige Untersuchungen verschiedenster hadronischer Systeme zu gewährleisten, wurde der Aufbau eines universellen Detektors geplant, des PANDA Detektors. Dazu ist ein hochauflösender Vertexdetektor (MVD) eine wichtige Komponente, um im Zusammenspiel mit weiteren Detektorkomponenten zur Spur- und Vertexrekonstruktion beitragen zu können. Im Rahmen dieser Arbeit wurden detaillierte Simulationen durchgeführt, die das Auflösungsvermögen des Vertexdetektors charakterisieren, ganz besonders im Hinblick auf die Rekonstruktion verschiedener physikalischer Kanäle. Dafür war die Entwicklung und Implementierung von Algorithmen zur Rekonstruktion der zu erwartenden Detektordaten und deren Integration in den Spurfit zur Teilchenrekonstruktion eine Grundvoraussetzung. Dadurch ist es möglich das Auflösungsvermögen des MVD und des gesamten experimentellen Aufbaus unter realistischen Bedingungen zu testen und zu optimieren. Die Spur- und Vertexrekonstruktion wird anhand der Kanäle Antiproton-Proton nach zwei geladenen Pionen und nach J/Psi Photon evaluiert. Der zu erwartende hadronische Untergrund stellt hohe Anforderungen an die Selektionskraft des experimentellen Aufbaus, bezüglich der physikalischen Observablen, dar. Dies ist besonders für die Untersuchung des Charmoniumsystems oberhalb der DD(quer)-Schwelle von Bedeutung, wofür kaum experimentelle Untersuchungen vorliegen und der PANDA Detektor zukünftig einen entscheidenden Beitrag zum Verständnis gebundener mesonischer Systeme beitragen kann. Zuständen im Charmoniumsystem ist es erlaubt in Open-Charm-Kanäle zu zerfallen, die eine eindeutige experimentelle Signatur mittels der D-Zerfälle in geladene Teilchen im Detektor erlauben. Im Rahmen dieser Arbeit konnte anhand zweier grundlegender Reaktionen gezeigt werden, dass selbst unter ungünstigen Annahmen über den zu erwartenden Wirkungsquerschnitt, der noch nicht schwellennah vermessen wurde, das stark unterdrückte Signal gegenüber Untergrundereignissen hinreichend angereichert werden kann. Dies erlaubt eine klare Identifizierung des DD(quer)-Ausgangskanales, wobei die wesentlichen Untergrundbeiträge identifiziert und diskutiert werden
Silva, Daiane Piva Barbosa da. "Desenvolvimento de estruturas do tipo bi-camada baseadas em camadas auto-organizadas e polianilina para a proteção contra a corrosão de ligas de alumínio." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-13082010-152925/.
Full textA method widely used in corrosion protection of aluminum alloys is the formation of conversion layers of chromium. In search of \"environmentally friendly\" corrosion protection methods there is the possibility of using conducting polymers such as polyaniline (PAni), which can act by barrier effect or absorbing charged particles from the solution and / or self-assembled monolayers (SAM), where protection may occur indirectly, when the SAM acts as a promoter of adhesion to other coatings, or directly, when the monolayer blocks the access of aggressive substances to the surface. This work proposes the use of bi-layers based on propyl-trimethoxy-silane (PTMS) + PAni and octadecyl-trimethoxy-silane (ODTMS) + PAni for corrosion protection of aluminum alloys AA1050, AA2024 and AA7075. For the corrosion tests were used different techniques such as: open circuit potential, potentiodynamic polarization curves and electrochemical impedance spectroscopy. Analysis of optical microscopy and scanning electron microscopy (SEM) were performed before and after the corrosion tests in order to verify the efficiency of the proposed coatings in corrosion protection. Additionally, tests of salt spray and adhesion were made, in addition to the characterization of the alloys by SEM and X-ray dispersive energy. The results show that the treatments resulted in improvements in corrosion resistance in the following order: PTMS < ODTMS < PAni < PTMs + PAni < ODTMS + PAni. The last one gives the best results such as larger shifts of the Ecorr to more positive values, decrease of the icorr, fewer corrosion points after the polarization curves, higher values of total impedance in the entire range of frequency used and more resistant to the exposure to salt spray.
Céspedes, Gallardo Fernando. "Colegio Luz de América con internado. Institución: Prefectura del departamento de Pando." Universidad Mayor de San Andrés. Programa Cybertesis BOLIVIA, 2008. http://www.cybertesis.umsa.bo:8080/umsa/2008/cespedes_gf/html/index-frames.html.
Full textQuagli, Tommaso [Verfasser]. "Hardware developments for the strip detector of the PANDA MVD / Tommaso Quagli." Gießen : Universitätsbibliothek, 2015. http://d-nb.info/1080120238/34.
Full textGrape, Sophie. "PWO Crystal Measurements and Simulation Studies of Anti-Hyperon Polarisation for PANDA." Licentiate thesis, Uppsala universitet, Kärnfysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-142861.
Full textBianco, Simone [Verfasser]. "Tracking and vertex reconstruction with the PANDA Micro-Vertex-Detector / Simone Bianco." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/104497155X/34.
Full textSchmidt, Mustafa Andre [Verfasser]. "Particle identification with the Endcap Disc DIRC for PANDA / Mustafa Andre Schmidt." Gießen : Universitätsbibliothek, 2018. http://d-nb.info/1153334860/34.
Full textPérez, Andrade Gabriela. "Production of the Σ0-bar hyperon in the PANDA experiment at FAIR." Thesis, Uppsala universitet, Kärnfysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-375552.
Full textVivar, Anaya Judith. "Población funeraria en las Huacas Pando y Santa Cruz (Valle del Rímac)." Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/113757.
Full textBorrami, Sina. "A control unit for a Digitizer System for the PANDA Electromagnetic Calorimeter." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-421560.
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