Proportional Valves
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Hardware de ventilador pulmonar. / Hardware lung ventilator.
Este trabalho visou mostrar o desenvolvimento de um ventilador pulmonar mecânico, focando principalmente na parte de hardware necessária para que este equipamento pudesse funcionar. Ventilação mecânica é a modalidade da medicina mais importante no cuidado a pacientes criticamente enfermos. O ventilador é um equipamento utilizado principalmente em unid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/09/2011
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2. Analysis of blowmold machine hydraulic system to reduce positioning time. / Análise do sistema hidráulico de uma sopradora para redução do tempo de posicionamento.
Many times, for some products classes, inputs as packaging may have an expressive weight in the final product cost structure. In the case of products packaged into plastic containers, this is an usual scenario that has as result, the increase of performance requirements of the blow mold machines that produce such containers. A point to be studied in the blow
Publicado em: 2007
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3. DEVELOPMENT OF A THREE DEGREE-OF-FREEDOM PNEUMATIC LINK FOR FLEXIBLE ROBOTIC MANIPULATORS / DESENVOLVIMENTO DE UM ELO PNEUMÁTICO DE 3 GRAUS DE LIBERDADE PARA MANIPULADORES ROBÓTICOS FLEXÍVEIS
Recently, the concept of flexible manipulators has attract great interest. These devices present a continuously deforming vertebral column, in opposition to the traditional robotic manipulators link/joint/link with rigid links. Flexible systems offer a potential increase in the capacity of interaction with the environment, being apt to adjust itself to the c
Publicado em: 2006
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4. Modeling and analysis of an auto-adjustable stroke end cushioning device for hydraulic cylinders
This paper describes the theoretical-experimental study of an auto-adjustable stroke end cushioning device utilized in hydraulic cylinders, focusing the characterization of the bush geometry effect on the cushioning achieved. A nonlinear model is presented which includes the physical phenomena that exert a significant influence on the performance of this hyd
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-12
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5. Ventricular outflow tract reconstructions with cryopreserved cardiac valve homografts. A single surgeon's 10-year experience.
OBJECTIVE: From January 1, 1985 through December 31, 1994, one surgeon implanted cryopreserved valved homografts into 149 patients--65 since December 1988. This latter series (II) was accomplished in a single hospital, facilitating patient follow-up with biannual echocardiograms. Analysis of these 65 patients is the primary focus of this report; the indicati