Ótica e a visão humana

Optics consists in the study of interaction of light with physical systems. The human vision is a product of the interaction of light with the eye (a very peculiar physical system). Here we present a basic study of the relationship between the optics and human vision, including: - The fundaments and physicals properties who characterize the light and the colors and the characteristics of the incidence mediums. - The basics laws of geometrical optics, based in the rectilinear propagation of light in the form of a light ray, in the independence of light rays and in the principle of reversibility of the light beams. This principle is present in the process of image formations in lenses and mirrors and applied in the study of image formation in the human eye. - The refraction and reflection laws and types of lenses, who permits the construction of optics devices for the study of physical universe, and the appliances to correct vision diseases. - Presents the human vision process as consisting in the reception of light (electromagnetic radiation in the zone of wavelength visible to us) through the eye and the sending of information obtained by the retina to the brain where it is interpreted. The vision involves a biophysical relation between the light and the biological structure of the eye who is constituted by cornea, iris, crystalline and retina. Analyzes is made of how some parts of the eye performs a function in the reception and sending of information of the images to the brain

Estudo da propagação de trinca por fadiga sob carregamento de amplitude variável

For engineering projects that require high reliability levels, is often not enough know only physical and chemical material properties. It’s necessary understand the failure mode of these materials in operation to ensure security level in the project and establish more stringent criteria in the analysis of structural integrity. Due to this need, aircraft industry has been using aluminum alloys in their designs and projects. “Currently more than 70% of aircraft structures are built of high strength aluminum alloys among which stand out 7075-T6 and 2024-T3 alloys, which are considered basics for being used in the new alloys development.” (PASTOUKHOV & VOORWALD, 1995). Some years ago ALCOA develops Al 2524 alloy that has emerged as refinement of Al 2024 (Al, Cu. Mg) alloy, with purpose of improve fracture toughness and fatigue resistance on structural components. The present research addresses testing of fatigue crack propagation under variable amplitude loading for Al 2024 alloy, observing the interaction effects from application of overhead blocks and plastic zone at the crack tip and makes an analysis of fracture surface images

Estudo do potencial de associações de ZnO com os produtos naturais ácido cafeico e ferúlico como filtros solares híbridos: [recurso eletrônico]

In this work were studied associations of ZnO with the natural products caffeic and feluric acids. Two preparation methods were used, that is, the sol-gel and a reflux procedure. In the sol-gel method, ZnO is produced by the basics hydrolysis of precursors in the presence of the organic filters (caffeic and feluric acids), which results in 30 nm (or less) ZnO particles with the organic filters (in dissociated form) bonded to the surface of ZnO. In the reflux method, a dispersion of ZnO in a water/ethanol mixture was kept under reflux (50oC/4h) in the presence of the organic acids. The ZnO particles used in the reflux method have a higher diameter than sol-gel ZnO particles, but the prepared associated product ZnO/Organic acids were similar. Despite of the difference in relation to crystallinity between the products, the preparation methods resulted in analogous associations with respect to the interaction of the organic filters with the ZnO surface. The caffeic/ZnO associations presented low photostability, which lead to the degradation of the organic filter. The other associations (feluric acid/ZnO) presented satisfactory results. The FT-IR spectroscopy confirmed the formation of the association, and the nature of the bond formed compared with the Zn-O bond in Zn2+/Felutic acid complexes. The isolated organic and inorganic filters, along with the associations were analyzed by diffuse reflectance spectroscopy and Uv-vis spectroscopy. The absorption edges and the critical wavelengths were analyzed and the effects of Zn-O bonds in feluric acid/ZnO associations described as a function of the relative position of the π/π* system of the organic filter. Finally the performance of the hybrid filters were investigated in terms of the absorption of UVA and UVB radiations, with the UVA/UVB ratio, an efficiency parameter largely used in the description of solar filters, sunscreen and suncare products

Estudo da tecnologia de acesso Wi-Fie suas aplicações em ambientes indoor e outdoor

Wireless communications is a feature that has become indispensable for many people in the whole world. Through this feature, communication process can become much more efficient, allowing people to access information much more quickly wherever they are. The constant evolution of communication technologies allows the development of new unthinkable applications and services. This new range of possibilities brings greater mobility and efficiency for final users and also helps service providers and carriers to improve the quality of services offered by them. This study presents the principles of wireless communication and the Wi-Fi technology as well as its most modern applications, covering from the basics of computer networks to the procedures of planning a wireless network, concepts of radio frequency, antennas, patterns, regulatory agencies, network equipment, protocols and network monitoring

Sobre o Teorema da Função Inversa

Pós-graduação em Matemática em Rede Nacional - IBILCE

Formação continuada no Amapá: a percepção dos educadores sobre o encontro pedagógico dos municípios

This paper presents the perceptions of participating teachers and technicians who produced and ministered courses in the Project of Continuing Education of teachers of Amapá State, called Pedagogical Encounter of Municipalities and is based on research results of the Master Degree in Education that was aimed to analyze and describe the referred project as well as studying the impact that it had on educational context of the municipalities. It was conducted a study of the Project’s trajectory including its theoretical basics, implementation and, mainly, a number of Project’s results. The methodology consisted of acquiring and analyzing official papers and interviewing 14 teachers and technicians. The statements obtained make it clear that the Pedagogical Encounter had a major impact on the educational reality of the municipalities, with more positive than negative results not only for teachers but also for instructors and coordinators. The statements can also be concluded that the continuing education actions will not achieve its objectives if they are not accompanied by public policies direct to improve living and job conditions of the teachers.

Effect of short training on vaginal fluid microscopy (wet mount) learning

Objective: Is it feasible to learn the basics of wet mount microscopy of vaginal fluid in 10 hours?Materials and Methods: This is a pilot project wherein 6 students with different grades of education were invited for being tested on their ability to read wet mount microscopic slides before and after 10 hours of hands-on training. Microscopy was performed according to a standard protocol (Femicare, Tienen, Belgium). Before and after training, all students had to evaluate a different set of 50 digital slides. Different diagnoses and microscopic patterns had to be scored. kappa indices were calculated compared with the expert reading. Results: All readers improved their mean scores significantly, especially for the most important types of altered flora (p < .0001). The mean increase in reading concordance (kappa from 0.64 to 0.75) of 1 student with a solid previous experience with microscopy did not reach statistical significance, but the remaining 5 students all improved their scores from poor performance (all kappa < 0.20) to moderate (kappa = 0.53, n = 1) to good (kappa > 0.61, n = 4) concordance. Reading quality improved and reached fair to good concordance on all microscopic items studied, except for the detection of parabasal cells and cytolytic flora. Conclusions: Although further improvement is still possible, a short training course of 10 hours enables vast improvement on wet mount microscopy accuracy and results in fair to good concordance of the most important variables of the vaginal flora compared to a reference reader.

Grupo Ginástico UNESP: contribuições da Ginástica para Todos na formação de seus participantes

Gymnastics for all or General Gymnastics is a gymnastic body practice without competitive purposes, demonstrative character that combines the basics of gymnastics with different forms of body language. It is a pleasurable physical activity and inclusive, within the gymnastic possibilities offers great opportunities for participation of people, creativity, cooperation and human values experiences (AYOUB, 2003). Within this proposal is, in 2011, the Gymnastic Group UNESP, under the guidance and coordination of teachers Laurita Marconi Schiavon e Silvia Deustch as a project of university extension of the Department of Physical Education, Biosciences Institute of the São Paulo State University / Campus Rio Claro - SP. His working method and choreographic composition based on the proposal of the Gymnastic Group Unicamp, reference in this body practice in Brazil, and their course is in two parts: one for the exploration of all the resources that the teaching materials can provide and the other focused on social interaction of its participants. Therefore the research developed in this study aimed to verify contributions of the participation of members in Gymnastic Group Unesp vocational training thereof, and to verify the relationship and the approach of the members with Gym. The methodological approach adopted for this qualitative research is descriptive, and quantitative and qualitative data collected through questionnaires. The participants were 32 students from different courses at the University, and members of Gymnastic Unesp Group from 2011 to 2013, with the inclusion criteria: 1. minimum of one year of participation in Gymnastic Group Unesp; 2. Minimum of two performances of choreography in events with that group. Quantitative data are processed using descriptive statistics and qualitative analyzed by content analysis technique proposed by Laville and Dionne (1999). According to the results obtained over 41% of the participants had no...

Eletrodinâmica quântica generalizada a la teoria de perturbação causal

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

O tabaco é um dos principais fatores etiológicos do câncer bucal: conceitos atuais

Neoplasm, tumor or cancer generic synonymies are used to designate a group of diseases that affect any part of the body.Their main common feature is the abnormal cell proliferation, usually rapid, uncontrolled and unrestrained. According to World HealthOrganization (WHO) cancer is the leading cause of death worldwide. In 2005, a total of 58 million deaths, 7.6 million (or 13%) of all of them were cancer. Among the factors that favor its development, the tobacco is considered one of the main villains. Therefore, this article, we will discuss the basics and updates about oral cancer and tobacco consumption.

Surdez: um estudo da formação continuada oferecida aos professores em uma diretoria de ensino no interior do estado de São Paulo

Pós-graduação em Educação Escolar - FCLAR

Óleo funcional na dieta de vacas leiteiras

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Artes orientais de movimentos: alternativas às terapias do campo da saúde. uma possibilidade de investigação para a psicologia do esporte. um exemplo de pesquisa fenomenológica

This research analyzes the discourse of teachers of ancient oriental arts, namely: Yoga, Tai Chi Chuan, Kung Fu, Lian Gong, Qwan Ki Do, reveals the meaning that subjects have about what are the benefits to health of those already considered practical alternatives conventional treatment of health. The research uses the phenomenological method specifically the method of the phenomenon. The method first provides a pre-reflection on the oriental arts, exposing not systematically, some curiosities changing between aspects of oriental arts: historical, main teaching methods, styles, the character of struggle, why are linked to health, the benefits of their practices, movements, philosophy, concepts, ways of acting, the roots, the basics. In this article the pre-reflection does not appear to meet the standards of Congress page limit. Rather concentrate on the next step of the research and present the phenomenon situated in the experience of those who have experienced it in the case of the five arts teachers mentioned above. The method performs individual analysis or ideographic analysis of the five discourses of teachers from each oriental art and then conducts the general or nomothetic. The result is presented an analysis of generalities, convergence, divergence and individuality of meanings expressed by the subject, to finally develop a discussion of these data and weave a synthesis. The analyzes reveal that Eastern practices currently as some of these five analyzed here, those involving aspects of struggle and concentration are excellent allied health development and well-being. Understanding the philosophical aspect is inherent in the practice of the movements, although the character of the struggle, which they transmit through knowledge of their origins and roots is the current thinking routine that generates a life philosophy of selfhelp, self-enabling and tranquility preparation to overcome the tensions, disputes, everyday challenges. The speeches also reveal that the psychophysical aspects of diseases are real, because the practices of movements and the physical drilling of these oriental arts have enabled visible improvements in health by working the mental and the physical in an integrated manner. Masters must have all the knowledge to better meet today's society, preserving these cultures, passing them through the generations.

Introdução aos sistemas aviônicos de rádio navegação

This work is focused on the subject of air radio navigation systems embedded on aircraft and in the ground stations. Initially is presented a historical context and motivation of the chosen theme. In the following chapters the basics avionics systems are presented, ADF, VOR, DME and ILS such that there is a deepening of electronics theory behind the operation of each system. In this graduate work were presented theories involved in systems such as the definition and creation of radio waves, the frequency spectrum used by each system, the modulation and demodulation of waves, the operating block diagrams of embedded receiver in the aircraft and the terrestrial source station, and the errors involved in the use of each system