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Semi-active friction tendons for vibration control of space structures
(Elsevier, 2014-07)
Semi-active vibration control systems are becoming popular because they offer both the reliability of passive systems and the versatility of active control without high power demands. In this work, a new semi-active control ...
Analytical, numerical and experimental studies on the Semi-Active Friction Tendon
(Elsevier, 2017-09)
For controlling vibrations, a Semi-Active Friction Tendon (SAFT), which consists of a semi-active friction damper and an auxiliary spring that are linked to the structure by a cable, is studied experimentally, numerically ...
On the assumed inherent stability of semi-active control systems
(Elsevier, 2018-03)
Vibration control systems are usually classified into: passive, active and semi-active. Semi-active control systems are based on formerly passive mechanical devices, such as springs and dampers, whose characteristics are ...
Control of relative vibration between flexible appendages using passive and semi-active isolation
(Elsevier, 2017-12)
Relative vibration between two flexible subsystems can be detrimental to the performance of many engineering applications, such as optics-based instruments, machine tools, or adjacent industrial structures sharing piping. ...
Suppression of vibrations in a nonlinear half-car model using a magneto-rheological damper
(2014)
The present work investigates the nonlinear response of a half-car model. The disturbances of the road are assumed to be sinusoidal. After constructing the bifurcation diagram, we use the 0-1 test to identify chaotic ...
Planejamento estratégico para escritório de advocacia: um estudo de caso
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilGestão Contábil e FinanceiraUTFPR, 2020-03-07)
Strategic planning is an efficient and indispensable tool in companies, as it helps administrators to obtain better conditions to evaluate their business. The main objective of this work is to elaborate a strategic planning ...
Manual de procedimientos para la dirección de promoción recreativa regional del ICODER
(Instituto Tecnológico de Costa Rica., 2016)
The ICODER is an institution created in 1998 therefore it can be considered relatively new, it is a semi-independent institution, founded under the law 7800, its main functions is the promotion and support of as much sport ...
Isolation and characterization of a high molecular mass β-glucan from Lactobacillus fermentum Lf2 and evaluation of its immunomodulatory activity
(Elsevier, 2019-04)
When grown in a semi-defined medium, L. fermentum Lf2 synthesizes significant quantities (∼2 g/L) of two exopolysaccharides (EPS). The two EPS were separated by preparative size exclusion chromatography to give a high ...