3126019 documents found, page 8472 of 312602
Estudo de dureza e de propriedades superficiais do compósito epóxi/quasicristal
Barros, Thayza Pacheco dos SantosQuasicrystals are materials with unique properties such as high hardness, low surface energy, low coefficient of friction, etc. Due to its high hardness and consequent fragility, the use of quasicrystals becomes limited to coatings and composite materials. This paper is a study of hardness and surface properties of the composite formed by the epoxy matrix and the quasicrystalline reinforcement. The quasicrystal...
Estudo teórico e experimental do processo de secagem do abacate (Persea america...
Alves, Suerda BezerraThe avocado is a fruit known for its high fat contained in the pulp and like most agricultural products also features a high moisture content in your composition. Drying of the avocado is important since the use of the fruit is performed to obtain a product of greater value, for example, oil serving as a raw material for biodiesel production. This research was developed with the aim to contribute to the theoret...
Análise e controle de um veículo robótico tracionado por esteiras
Santos, Alexsandro José Virgínio dosThe use of unmanned vehicles has been widespread in the areas of safety, environmental exploitation and industry in general and can be tele-operated or autonomous. There are also hybrid systems, in which the vehicle is tele-operated, but endowed with intelligent algorithms that guide the operator and make decisions in the most critical situations. Many authors have studied the kinematics and the dynamics of tra...
Caracterização e desenvolvimento de um atuador de força utilizando material de ...
Oliveira, Samuel deThis paper presents an experimental design of a power control system and position, using, as actuator, a coil spring of Shape Memory Alloy (SMA), consisting of Ni-Ti alloys, in an adapted screw table. A controller, closed loop, based on Fuzzy logic has been modeled to control the force exerted by the spring which the spring is manipulating by the temperature. In this work, the spring temperature was controlled ...
Caracterização de rotores adsortivos para composição de sistemas de climatizaçã...
Melo, Francisco José AraujoIn this work, will be characterized two types of adsorptive wheels, an active effect and the other passive effect, known respectively as desiccant wheel and enthalpy wheel. These devices are used to compose the climatization adsorption systems as a means of promoting the dehumidification of air using the adsorption phenomenon that occurs in their adsorptive matrices. This phenomenon involves both the mass trans...
Cuidados paliativos e espiritualidade: um estudo com enfermeiros
Evangelista, Carla BrazPalliative care is an approach that improves the quality of life of patients and family members facing life-threatening diseases through the relief of physical, psychological and spiritual suffering. Therefore, it is observed that spirituality helps patients face difficult situations and is considered an important tool in palliative care, to ease the suffering and pain caused by terminal and chronic degenerativ...
Representações sociais sobre terapia comunitária integrativa construídas por id...
Moura, Samilla Gonçalves deThe present study is of exploratory type based on structural contribution of the Theory of Social Representations. It aimed to knowing the structure of social representations of the elderly and health professionals about the Integrative Community Therapy and to compare. It involved 263 elderly and 247 professionals of service network of SUS in João Pessoa-Paraiba. Data were collected through the Word Free Assoc...
Desafios de familiares envolvidos no processo de cuidar de dependentes químicos
Costa, Lorena de Farias PimentelThe increased consumption of licit and illicit drugs has permeated the daily life of many Brazilian families, encouraging involvement by substance abuse, nowadays recognized as an important risk factor to health and the production of physical, biological and psychological nature of damage in the lives of users and family. The changes in the care scenario in mental health promoted the development of actions base...
Influência de parâmetros operacionais na microestrutura e propriedades mecânica...
Silva, Diego Vilar daThe squeeze casting process is a casting process in which the cast metal in the liquid state is solidified under pressure in a metal mold closed off by a punch. In general components manufactured by squeeze casting have fine grained, high surface finish and almost free of porosity, may be the same of different sizes and shapes, the mechanical properties are enhanced significantly in comparison with the traditio...
Análise de controle de força usando servomecanismo eletropneumático
Araujo, Eudes Gonzaga deThis work presents the designs and results obtained through simulation and experimental testing of conventional controllers P, PI and PID implemented by personal computers applied to an electropneumatic servomechanism for control of force. The system consists of a double acting pneumatic cylinder, which is responsible for applying the force on a mechanical subsystem consisting of a spiral spring, representing t...