Análise cinemática e dinâmica para conversão de um VW saveiro em veículo elétrico

This work aims to kinematic and dynamic analysis of a VW Saveiro in order to estimate the power requested to the engine with the imposed movement conditions. Thus, the study will be the basis to the specification of the electric engine, on the conversion of the internal combustion vehicle into electric one. First of all, a literature review was done in order to understand the state of the art for this issue and come up with the technical features of the vehicle in question. The next step is the identification and calculation of all forces acting on the prototype in motion, from 0 to 120 km/h, in intervals of 10 km/h, under the defined conditions of path and time. Then, were determined the values of the torque and rotation of the components from the transmission system, as well as the engine power, for each speed range. The results show the most influential forces on the resistence of the movement in each speed range, and the behavior of the torque curve is verified. Finally, it was also analyzed the implementation of pinwheels on the frontal area of the vehicle, in order to convert wind energy into electrical energy to supply the lighting subsystem of the vehicle and the proposal was validated. Limiting the maximum speed of the vehicle to 90 km/h, it was finally concluded that the power of the electric engine should be 40 HP

Analise de defeitos em motores através de vibração mecânica: estudo de caso

Revolving machines are among the most used equipment in general industry and therefore expenditures on this equipment class are a significant portion of the total amount spent by the company. If there is an unscheduled stop of some of this equipment, industrial plants can lose huge amounts of money caused by interrupted production and parts delay. Others may increase significantly maintenance costs due to consequences elsewhere not affected before. Even plant and people safety can be in danger if there is an operation interruption without a backup system start. This work is focused on a rotating system case study which is monitored by vibration analysis that shows that is possible to determine when is the most appropriate time for equipment intervention without any reliability loss just by using a simple and cheap system which is not much used because professionals are not aware to its utility. Industrial facilities were evaluated by fail detection and historical analysis in some equipment in order to show feasibility of vibration analysis through a before-during-after process. The plant evaluated is part of a chemical multinational located in Guaratinguetá-SP. At this time, that plant had around 650 critical equipment monthly monitored and no unscheduled shutdown was registered in one year period due to equipment monitoring

O local de nidificação do sabiá-barranco (Turdus Leucomelas) (Aves, Turdidae) afeta a temperatura interna do ninho durante a incubação e cuidado à prole?

Individuals of the species Turdus leucomelas are adapted to live in environments already modified by humans, thus obtaining reproductive success in their nesting in vegetation, as well as built their nests in human buildings. Nests found in buildings are often less camouflaged, making them more exposed to predators compared to nests built in vegetation; however the nests built buildings are common, indicating a possible advantage associated with these nests. By means of this idea if was assumed that a possible advantage to this construction in buildings is linked to a change in variation in the internal temperature of the nest during incubation and development of pups until they leave their nests. Accordingly, with the aid of iButtons and TidBits (temperature data loggers), the present study aimed to analyze the influence of the nesting site on how the temperature is kept, and how it changes in the microenvironment in which the nest is inserted, indicating potential benefits associated with that choice. In the samples found with the vegetation, temperature data showed a pattern of temperature of the microenvironment of the nests is not very stable, varying with ambient temperature, whereas in the samples found with the human constructions, the temperature data showed a pattern of temperature microenvironment nests more stable for a long time. When comparing the two environments which they settled nests, as well as the different times of day (daytime and nighttime), how the temperature was kept and pattern of change within the nest was significantly different (F=43.85, p<0.001), with higher and more constant internal temperatures in nests installed in construction, compared to vegetation. When observing periods of the day, it was found that in both environments the temperature inside the nest reached higher values and higher than the environment at night, coinciding with the rest of the female at night. Data may suggest changes in the...

Estudo da anatomia interna dos incisivos laterais superiores pelos métodos radiográficos digital e convencional

The maxillary lateral incisor has a very peculiar and internal morphology that can be influenced by the its external anatomy such as supernumerary roots and ruts deep root, which often hinders an effective endodontic treatment. Generally, this tooth have a single root with one root canal, but teeth with two to four channels can be found. The main canal can present ramifications such as accessory canals, laterals, collaterals, recorrents and apical deltas. All this factors interfere directally on endodonthics treatment. The objective of this work is a study of the internal anatomy of the maxillary lateral incisors by digital and conventional radiographics methods, comparing the results obteined by each method Six hundred upper lateral incisor were used in this study teeth of the collection of the Department of Anatomy ICT – UNESP. All the teeth were radiographed by vestibular face, using a digital radiographic unit(Dabi Atlante). After this step, all the teeth underwent by conventional radiographic technique(Kodak 2200) so that the results obtained were compared. To classify the channel system, it was adopted the classification of Pucci and Reig. All data obtained by digital technique were compared with those obtained in the conventional technique and were subjected to statistical analysis

Comunicação interna: uma questão de qualidade

Internal Communications, a central theme of this project, it is essential to support a transparent and effective cooperation between organization and em ployee. In companies with Quality Management System, as certified in ISO 9001, need to adhere to the quality not only in its management policy, but as in all of its processes and the various agencies in which there is interaction, especially the internal. This paper aims to reflect on the interaction with the internal audience, paying attention to the fact that the information required and the strategic management of public relations positively interfere in the relationship between organization and employe e and the resulting benefits that these entail in quality management. The demonstration of the policies employed by the company Vien a Grafica & Editora as the basis for developing a model suggestive of internal communication in business quality. Thus, we intend to understand how effective communication arouses feelings of motivation and engagement among employees, so there is the realization of quality in all organizational sectors

Tomada de decisão em grupo na seleção de processos para auditoria interna

L’audit, c’est un outil de gestion très important pour que les organisations puissent accomplir la réussite. Selon le fait qu’il n’y a pas des modèles d’aide à l’audit, il existe une opportunité de recherche. En considerant les Méthodes d’Aide à la Décision, il y a des plusieurs type d’applications. L’objectif de la recherche c’est la proposition d’un modèle capable de sélectionner des processus pour faire l’audit dans une distributeur de carburant en considerant la prise de décision en groupe. La modélisation normative empirique c’est la méthode de recherche utilisée. Un modèle qui utilise l’Analytic Hierarchy Process (AHP) et la prise de décision en groupe a été proposé face aux difficultés d’un département d’Audit Interne. Le modèle proposé présente les poids des processus et permet leur priorisations dans un scénario determiné. Pour l’application de ce modèle présenté, on a utilisé cinq critères et 26 alternative (processus). L’information de jugement a été bien founi par trois spécialistes du département. Quelques rendez-vous avec les participants ont été pris pour obtenir et réviser les donnés ainsi que discuter les résultats. Les résultats obtenus par le modèle permettent d’identifier les processus qu’il faut plus d’attention. L’équipe a considéré le modèle comme une proposition d’aide à la prise de décision très pertinent pour le département d’Audit Interne

Método para reconhecimento de íris baseado na sua região interna

Recognition of individuals through the characteristics of the iris has in recent years become a well accepted technique due to both the high reliability of this procedure and the its non invasiveness. The methods used in such procedures seek information all over the iris, which depending on the algorithm used may result in high computational costs. Considering that most characteristics of the iris are in its inner region the goal of this work is to develop an algorithm for the recognition of individuals using only this region. To bring the outcome of our approach to the level of the best techniques described in the literature this technique has to be further elaborated, even so the results show a promising technique.

Desenvolvimento do PFMEA para uma linha de montagem de motores

In modern days is not practicable to link productivity and profitability without discuss the manufactured products quality. It is of great importance, mainly if the company is looking for a Global Class title, both the product and the process in what it is been fabricated, to attend all the high level quality requirements. This work aims to define the necessary steps for implementing a new project, including the initial viability studies, and then the staff approval, passing through the development of tools and documents necessary to its fabrication, purchasing goods and services to build the installation, and the final stage of implementation, focused on the manufacturing process quality. It will be highlighted a quality tool that helps do decrease the process risks and thereafter increase its reliability after the implementation

Implementação da metodologia lean manufacturing em uma linha de produção por meio de certificação interna

To the companies maintain competitive in the market, they need continuous improvement in quality and productivity. This continuous improvement can be achieved through lean manufacturing tools. The idea of lean manufacturing is to map the flow to identify the processes that don’t add value in the final product, according the customer specification, in others words is eliminate or reduce the waste on the production flow. However the implementation of lean manufacturing is not so simple and involves the resistance of the employees, lack of training and the lack of knowledge to make the implementation. The objective of this study is determinate the good practices and difficulties found by a multinational company in the field of healthy that aims implementing the Lean Manufaturing through an internal certification. The methodology used to approach the problem is a case of study that analyzes the information introduced through discussion made by a semi structured interview. The case study describes the steps to get the certification, involving the concepts of 5S, balancing, standardization and routine management. The literature and the study case showed that the good practices, such as productivity increases, safety level increases and the machine stability were accomplished, but the majority difficulties was found in cultural factors and planning. Some recommendations were proposed to the others companies, such as the elaboration of a qualification matrix and the review of the activities chronogram during the implementation. The way that the company found to implement Lean Manufacturing concepts was a creative method to show to everybody the objective and the target to be accomplished and is one way to recognize the effort through the certification

Um modelo de avaliação interna para a melhoria de processos pedagógicos e administrativo: aplicação em uma faculdade de tecnologia

Pós-graduação em Engenharia Mecânica - FEG

Biometria ocular ultrassonográfica e dopplerfluxometria das artérias oftálmica interna e central da retina em macaco-prego (Sapajus spp)

Pós-graduação em Biotecnologia Animal - FMVZ

Avaliação da espessura da mandíbula com relação à fixação interna rígida em osteotomia sagital: estudo anatômico

Purpose: Trying to provide more anatomical data to the oral and maxillofacial surgeons regarding to orthognathic surgery, specifically about sagittal split osteotomy, the authors accomplished an anatomical study in dry human jaws, measuring the thickness in four previously established points of the body and mandibular ramus, at the usual spots used for the internal fixation by screws. Material and Methods: The authors also use the data collected to evaluate if there are significant differences between the group I (human dry mandibles with teeth) and group II (edentulous human dry mandibles). Results: For the group I the authors found the following results: x1 = 14,48, x2 = 14,94, x3=12,82 and x4 = 9,41, being the x2 the thickest point, and the least thick the x4. However in the group II, the found medium values were: x1 = 13,38, x2 = 13,08, x3 = 11,63 and x4 = 12,18, being the thickest point in that group the x1 and the least thick x3. The coefficient of simple correlation between the variables (group I and II) revealed a value of 0,6194, being this difference no significant at the meaning level of 95%.

A vigilância sem farda: a espionagem interna na ditadura civil militar através do DEOPS

Pós-graduação em História - FCHS

Melhoria nas forças restaurativas do equilíbrio do gerador de indução duplamente alimentado por meio de controle da tensão interna

Pós-graduação em Engenharia Elétrica - FEIS