Desenvolvimento de um código computacional para simulação e análise de espectros atômicos

The aim of this work was the development a computer code for simulation and analysis of atomic spectra from databases constructed from the literature. There were created four routines that can be useful for spectroscopic studies in the atomic processes of laser isotope separation. In the first routine, Possible Transitions, the program checks the possible electron transitions from an energy level of the atom present in the database considering the selection rules for an electric dipole transition. The second routine, Locator Transitions, checks the possible electronic transitions within a user-specified spectral region. The routine Spectra Simulator creates simulated spectra using the graphical application gnuplot through lorentzian curve and finally, the routine Electronic Temperature determines the temperature of electronic excitation of the atom, thought the Boltzmann Plot Method. To test the reliability of the program there were obtained experimental emission spectra of a hollow cathode discharge of dysprosium and argon as a buffer gas. The hollow cathode discharge has been subjected to different values of operating currents and pressure of inert gas. The spectra obtained were treated with the assistance of program routines developed (Transition Locator and Spectra Simulator) and temperatures electronic excitation of the atoms of dysprosium in the different discharge conditions were calculated (routine Electronic Temperature). The results showed that the electronic excitation temperature of the neutral dysprosium atoms in the hollow cathode discharge increases with increasing current applied to the cathode and also by increasing the gas pressure buffer. The determination coefficients, R2, obtained by the Electronic Temperature routine using the linear adjust of the Boltzmann Plot Method were greater... (Complete abstract click electronic access below)

Análise da estabilidade do movimento rotacional de satélites artificiais com quatérnions e sob a influência de torques externos

The aim of this work is to analyze the stability of the rotational motion’s artificial satellite using the Routh Hurwitz Algorithm (CRH) and the quaternions to describe the satellite’s attitude. This algorithm allows the investigation of the stability of the motion using the coefficients of the characteristic equation associated with the equation of the rotational motion in the linear form. The equations of the rotational motion are given by the four cinematic equations for the quaternion and the three equations of Euler for the spin velocity’s components. In the Euler equations are included the components of the gravity gradient torque (TGG) and the solar radiation torque (TRS). The TGG is generated by the difference of the Earth gravity force direction and intensity actuating on each satellite mass element and it depends on the mass distribution and the form of the satellite. The TRS is created by changing of the linear momentum, which happens due to the interactions of solar photons with the satellite surface. The equilibrium points are gotten by the equation of rotational motion and the CRH is applied in the linear form of these equations. Simulations are developed for small and medium satellites, but the gotten equilibrium points are not stable by CRH. However, when some of the eigenvalues of the characteristic equation are analyzed, it is found some equilibrium points which can be pointed out as stables for an interval of the time, due to small magnitude of the real part of these eigenvalue

Análise do desempenho físico-mecânico de painéis compensados de Pinus sp. produzidos com adesivos aquosos a base de poliacetato de vinila e de homopolímero vinílico

This study aimed to evaluate the physico-mechanical performance of three PVA adhesive formulations according to the Brazilian standards for plywood testing and to evaluate the results with those presented in the technical literature and specified in normative documents. The study presents the production process of the panels, the obtaining of samples and, finally, the implementation of physico-mechanical characterization tests based on plywood Brazilian standards. For the panels production it was used a gramature of 120 g / m² and applied a pressure of 15 bars and two temperature combinations and pressing time for each adhesive. The commercial adhesives used were PVA 1810, PVA 1060 and Vinyltec 239. The physical tests conducted were thickness swelling, density, moisture content and water absorption. The mechanical tests were static flexion, for the determination of elasticity modulus (MOE) and rupture modulus (MOR), and shear in the glue line. Among the three formulations studied none showed good performance in the presence of water. However, other trials in the adhesive showed better results and closer to the commercially equivalent used, in the case the urea-formaldehyde, was the PVA 1810, that can be applied in non-structural uses and in environments without the presence of moisture

Análise geoambietal para o planejamento de obras civis lineares: uma abordagem por sensoriamento remoto orbital

Construction of linear engineering as, roads, ducts and multiducts as roads, has a strong feature of the diversity of land on which they are deployed. This diversity involves properties geological, geomorphological and structural variety. The purpose of this work is to characterize the physical environment in relation to their ability to support the implementation of civil works linear. To achieve this, the use of orbital remote sensing, in this case, Landsat - TM. Interpretative techniques are applied to images in order to assess the forms of relief and drainage found that they can set properties and have built a favorable meaning or not to implement these works. The results and thematic maps presented in this study allow us to promote the geoenvironmental analysis for the planning phase sustainable linear civil constructions (roads and multiducts)

Diagnóstico da suscetibilidade à erosão linear, fluvial e assoreamento em trecho da Bacia do Rio Passa Cinco, Ipeúna-SP

Este trabalho teve como tema principal o mapeamento geológico-geotécnico de determinado trecho da Bacia do rio Passa Cinco, e sua suscetibilidade a processos erosivos lineares, fluviais e de assoreamento. A área tem 129km2 e está situada principalmente no município de Ipeúna, estado de SP. O estudo foi desenvolvido a partir de análise por sensoriamento remoto (land systems) de fotos aéreas e associação a mapas geológicos, geomorflógicos, pedológicos e perfis de alteração. Esta análise integrada permitiu a divisão da área em dez Unidades Básicas de Compartimentação (UBCs), com base na metodologia apresentada por VEDOVELLO em diversos trabalhos. Foram obtidas dez Unidades Básicas de Compartimentação, apresentadas na ordem de ocorrência na Depressão Periférica (6 Unidades) e no relevo escarpado (4 Unidades). A partir desta compartimentação, verificações em campo e imagens de satélite foram adotados parâmetros para a análise quanto a suscetibilidade a aos processos erosivos lineares, fluviais e de assoreamento, obtendo-se três Unidades com alta suscetibilidades a processos erosivos lineares, e uma Unidade com alta suscetibilidade a processos erosivos fluviais e assoreamento. Como produto foi gerado um Mapa geológico–geotécnico em escala 1:50.000, com perfil representativo da área e uma tabela-síntese com as principais características e análise de suscetibilidade aos processos analisados

Arte & jóia: uma análise da joalheria contemporânea brasileira

Since the beginning human needs to produce elements artistics, in such way that can set their history and pass a language, be it as art, culture and / or as an identity. Within this context, the jewelry was being developed, its characteristics and aesthetics, in a period, being artistic, historic, marking this form a civilization, a document, with its innovations and concepts. Nowadays, with technology, trade and the need to search for creations and innovations in the jewelry section, was prepared and developed those that we call Art jewelry. This study brings a trajectory through the history of jewelry art and jewelry; specifying in the contemporary period the various types of jewelry such as author and industry, its artists and jewelers; parts exhibited in museums and designed for competitions, thus creating a analysis of contemporary jewelry

Definição de um modelo de análise de sucesso das empresas baseado em índices contábeis e na análise multivariada

The objective of this paper is to relate the set of financial ratios that are directly related to the success of public traded companies using a methodological approach and the method of multivariate principal component analysis. This study consists in the use of profitability ratios, debt and liquidity, to define the relationship between financial ratios with the best public traded companies listed in the magazine Exame Melhores e Maiores of 2013. Multivariate analysis was used to reduce the dimensionality of multivariate data, making linear combinations of the original variables (financial ratios) and express the data in principal components that result in new variables that contains much of the original data. As a result, we got the optimal number of five principal components, and both represent 95.6% of the original data. Among of all financial ratios, we can highlight the direct relationship between profitability ratios for the first principal component, and the direct relationship between the liquidity ratios, both inversely related with non-capital participation rates and degree indebtedness to the second principal component

Corporalidade neopentecostal: análise e concepção de corpo na Igreja Bola de Neve de Marília, SP

Pós-graduação em Ciências Sociais - FFC

Análise de geradores piezelétricos acoplados com circuitos retificadores operando em regime caótico

Pós-graduação em Engenharia Mecânica - FEIS

Dinâmica linear e não linear da variabilidade da frequência cardíaca: sensibilidade, especificidade, valor preditivo e correlação de características físicas e clínicas no Diabetes Mellitus tipo 1

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Análise biomecânica do chute frontal de karatê: implicações em lesões nos membros inferiores

Pós-graduação em Engenharia Mecânica - FEG

Uma análise do grau comparativo nos materiais didáticos de língua inglesa via teoria das operações predicativas e enunciativas

Pós-graduação em Linguística e Língua Portuguesa - FCLAR

Zweckmässigkeit ohne Zweck: ideias kantianas presentes na estética de Goethe

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise de causas de trincas em carro de translação de empilhadeira/recuperadora

The present work aims to study the possible causes of cracks founded and recovered in translation cars of ore Forklift / ore Reclaimer. To identify the possible causes of cracks observed on the equipment it was used a static approach analysis, using a finite element method as an analysis tool, using a specific structural analysis program. After making the model, a strain gage measurement was necessary because there may be significant amounts of masses of non-structural components that were not modeled and were not available in the drawings, as well as fouling ore. With the calibrated model it was processed analyses with the load cases of dead load, product, wind and excavation. After the processing, it was observed that none of these load cases resulted in values that caused the crack, so another three hypotheses were tested: depression and misalignment, jacking and translation of only three cars. Of these three hypotheses it was observed that the jacking coud be the cause of the cracks, because the distribution of stress. Due to the miss of parameters, like the height utilized in this process, it was not possible to affirm the real stress level

Análise estrutural de vigas treliçadas de aço com mesa de concreto

Pós-graduação em Engenharia Civil - FEIS