Machinery Dynamics
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Lessons and perspectives for applications of stochastic models in biological and cancer research
The effects of randomness, an unavoidable feature of intracellular environments, are observed at higher hierarchical levels of living matter organization, such as cells, tissues, and organisms. Additionally, the many compounds interacting as a well-orchestrated network of reactions increase the difficulties of assessing these systems using only experiments.
Clinics. Publicado em: 21/09/2018
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2. Structural studies of the Enterococcus faecalis SufU [Fe-S] cluster protein
Background: Iron-sulfur clusters are ubiquitous and evolutionarily ancient inorganic prosthetic groups, the biosynthesis of which depends on complex protein machineries. Three distinct assembly systems involved in the maturation of cellular Fe-S proteins have been determined, designated the NIF, ISC and SUF systems. Although well described in several organis
Publicado em: 2010
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3. Molecular dynamics at Trypanosoma cruzi nucleus. / Dinâmica molecular no núcleo de Trypanosoma cruzi.
In Trypanosoma cruzi the replication sites are located at nuclear periphery. In order to analyse the dynamics of molecules involved in replication, Orc/Cdc6 was used as a marker of pre-replication machinery and PCNA as a marker of replication machinery during the cell cycle of epimastigote form. Both molecules presented two nuclear patterns: dispersed patter
Publicado em: 2008
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4. Identificação de parametros de mancal através de analise de correlações / Bearing parameters identification through correlation analysis
This work presents an identification methodology of stiffness and damping parameters of rolling bearings in a rotor-bearing system. The proposed method is based on Ljapunov matrix equation and state space representation. Through the definition of correlations used in matrix equation, it is possible to generate an algorithm that relates system physical parame
Publicado em: 2008
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5. Modelagem dinamica de compressores alternativaos / Dynamic model of reciprocating compreting compressors
Este trabalho tem como objetivo propor um modelo de dinâmica flexível dos componentes de um compressor alternativo monocilíndrico de refrigeração. Tal modelo representa um aperfeiçoamento da modelagem dinâmica utilizada, que supõe mancais rotativos fixos ou pinados. A modelagem dinâmica flexível do compressor é útil na analise dos esforços de na
Publicado em: 2008
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6. Discussão sobre a pressão sonora que acomete o trabalhador da indústria da construção civil
The decision for the building construction industry was due to its dynamics, having diverse areas within a project, many construction workers are involved, and they are exposed to machinery and equipments noise. Machinery noise is the main cause of medical leave and injuries; it can also cause early retirements by the INSS [Brazilian National Institute of So
Publicado em: 2007
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7. DYNAMICS OF ROTATING MACHINERY IN FLUID-FILM BEARING / DINÂMICA DE MÁQUINAS ROTATIVAS EM MANCAIS HIDRODINÂMICOS
This work analyses the effect of fluid-film bearings on the dynam- ics of turbomachinery with respect to unbalance response, vibration mode shapes and, specially, instability that tends to occur, mainly, at high speeds or light loads. The bearing stffiness and damping bearing properties are calculated using the analytical solution of the Reynolds Equation, b
Publicado em: 2006
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8. Avaliação do preparo de solo empregando o sistema de cultivo conservacionista em faixas com ?paraplow? rotativo usando a analise dimensional / Evaluation of soil tillage using strip-till conservation tillage with rotary paraplow using dimensional analysis
This work was developed in the experimental field of Agricultural Engineering CoI: of State University of Campinas, and it had as objective to evaluate the new system of tillage in strip conservationist with Rotary "Paraplow", it was given emphasis for application in seeding systems appropriate for small fanns. The evaluation was divide( three groups: charac
Publicado em: 2006
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9. Fault diagnosis in a rotor supported by active magnetic bearings / Detecção de falhas em rotores sustentados por mancais magneticos ativos
This work applies the methodology of fault diagnosis in rotating machinery supported by active magnetic bearings and active con1rol systems, excited by unbalance and white noise. This diagnostic applies the correlation matrices based on the Ljapunov matrix formulation and artificial neural network for linear stationary systems. The procedure uses only measur
Publicado em: 2006
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10. Alterations in the dynamics of vibroimpact systems due to clearance variations / Alterações na dinamica de sistemas com vibroimpacto devidas a variações da folga
This works presents an investigation on the changes in the dynamics of vibroimpact systems as their clearance is varied. Particularly we are interested in the migration of the characteristic frequencies of impact systems. We can consider that a given vibroimpact system reaches to a degenerated impact system when the clearance reaches to zero or to a value wh
Publicado em: 1998
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11. Genetics of the Biogenesis and Dynamics of the Photosynthetic Machinery in Eukaryotes
American Society of Plant Biologists.
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12. RNA interference machinery regulates chromosome dynamics during mitosis and meiosis in fission yeast
The regulation of higher-order chromosome structure is central to cell division and sexual reproduction. Heterochromatin assembly at the centromeres facilitates both kinetochore formation and sister chromatid cohesion, and the formation of specialized chromatin structures at telomeres serves to maintain the length of telomeric repeats, to suppress recombinat
The National Academy of Sciences.