Uma abordagem teórica e experimental do oscilador harmônico em duas dimensões utilizando as curvas de Lissajous

The study of oscillatory phenomena is an important topic in several areas of knowledge. The understanding and the solution of many problems that scientists and engineers confront nowadays can be formulated, at least as an analogy, in terms of an oscillatory movement. The description of the motion of this nature has remarkable contributions to the mathematical and conceptual formation of the students and for solving daily problems in several areas. In this paper we propose a theoretical and experimental approach involving the phenomenon of harmonic oscillations in two dimensions. Lissajous curves were used as experimental demonstration of the resulting trajectories. These curves were obtained from relatively simple experimental apparatus, which is affordable in most teaching laboratories of physics.

Compreendendo o significado da liderança para o aluno de graduação em enfermagem: uma abordagem fenomenológica

This study aimed at understanding the meaning of leadership to undergraduate nursing students and the expectation related to their professional practice. Phenomenology was used as theoretical framework. Fifteen undergraduate nursing students were recruited as subjects and answered the following question: What do you understand by leadership, and how can it be applied in your professional practice? The topics which were revealed and analyzed, Leadership Styles and Leadership Exercise, enabled us to understand that the meaning attributed to leadership is unveiled as a dynamic process, and the style adopted is the form to lead a team; therefore, an ideal leadership style does not exist. In teaching, the leadership style began to be discussed when the participant forms of personnel management were approached. In leadership practice, the dissociation between leadership theory and practice is emphasized, pointing out that integration with practice is relevant for leadership learning.

Disfunção temporomandibular na visão de profissionais e acadêmicos de odontologia

This paper presents the results of an applied qualitative study with dental students and professionals who work with people suffering from temporomandibular disorder. The aim was to investigate the way that dental practitioners and students perceive patients affected by this disorder, how they feel faced with the patients' suffering, and the importance they assign to a multidisciplinary approach, highlighting the treatments used. It is noteworthy that various factors are involved in the temporomandibular disorder framework, including emotional factors, as cited by the majority of the respondents. The data obtained indicated that the knowledge of the professionals and students related to caring for people with temporomandibular disorders was appropriate, however, important inadequacies were highlighted, such as the fact that professionals do not investigate the life history of the person in their psychosocial context.

Metabolômica, uma abordagem otimizada para exploração da biodiversidade brasileira: estado da arte, perspectivas e desafios

Brazilian biodiversity is a colossal source of secondary metabolites with remarkable structural features, which are valuable in further biodiscovery studies. In order to fully understand the relations and interactions of a living system with its surroundings, efforts in natural product chemistry are directed toward the challenge of detecting and identifying all the molecular components present in complex samples. It is plausible that this endeavor was born out of recent technological sophistication in secondary metabolite identification with sensitive spectroscopic instruments (MS and NMR) and higher resolving power of chromatographic systems, which allow a decrease in the amount of required sample and time to acquire data. Nevertheless, the escalation of data acquired in these analyses must be sorted with statistical and multi-way tools in order to select key information. Chromatography is also of paramount importance, more so when selected compounds need to be isolated for further investigation. However, in the course of pursuing a greener environment, new policies, with an aim to decrease the use of energy and solvents, are being developed and incorporated into analytical methods. Metabolomics could be an effective tool to answer questions on how living organisms in our huge biodiversity work and interact with their surroundings while also being strategic to the development of high value bio-derived products, such as phytotherapeutics and nutraceuticals. The incorporation of proper phytotherapeutics in the so-called Brazilian Unified Health System is considered an important factor for the urgent improvement and expansion of the Brazilian national health system. Furthermore, this approach could have a positive impact on the international interest toward scientific research developed in Brazil as well as the development of high value bio-derived products, which appear as an interesting economic opportunity in national and global markets. Thus, this study attempts to highlight the recent advances in analytical tools used in detection of secondary metabolites, which can be useful as bioproducts. It also emphasizes the potential avenues to be explored in Brazilian biodiversity, known for its rich chemical diversity.

Uma abordagem diferente na estatística do experimento Millikan

The classic Millikan experiment to determine the electron charge is very interesting from the point of view of statistics of experimental measurements. In a physics laboratory it is suggested to divide the obtained values of the electric charge by the value of an electron charge, and it is possible to experimentally establish that the oil droplets carry integer numbers of electrons. This work presents a new statistical algorithm for the treatment of measurements and for determining the best value of the electron charge in a Millikan experiment.

Abordagem multivariada, perfil composicional e construção de curva de calibração para predição do teor de óleo em Jatropha curcas L

Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV

Abordagem genética e multivariada na performance agronômica de genótipos de soja oriundos de diferentes genealogias

Pós-graduação em Agronomia (Genética e Melhoramento de Plantas) - FCAV

Sal: uma abordagem sobre o elemento material na obra de arte

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise de formas planas em imagens digitais: uma nova abordagem baseada na Transformada de Hough

Pós-graduação em Ciência da Computação - IBILCE

Uma abordagem usando visualização de software como apoio à refatoração para aspectos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O tratamento temático da informação em abordagem sociocultural: diretrizes para definição de política de indexação em bibliotecas universitárias

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A história oral como uma abordagem didático-pedagógica na disciplina política educacional brasileira de um curso de licenciatura em matemática

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

A coisa e o olho: uma abordagem da direção de atores no teatro de Samuel Beckett

Pós-graduação em Artes - IA

Cantar em português: um estudo sobre a abordagem articulatória como recurso para a prática do canto

Pós-graduação em Música - IA

Cálculo K: uma abordagem alternativa para a relatividade especial

In this paper we present an alternative approach due to Bondi for the special theory of relativity. During the development, we analyse the Bondi diagrams, visual resources from which we can take some information about the analysed systems, and we discuss the K factor of Bondi's theory, which is in the core of this work. We then discuss some of the main results obtained from Einstein's special theory of relativity such as the time dilation, spatial contraction and simultaneity of spatially separated events, besides the Lorentz transformations. We also show other two important results in physics coming from K calculus: the relativistic linear momentum and the total relativistic energy.