CONTEXT Immunological similarities have been noted between HIV-infected individuals and older HIV-negative adults. Immunologic alterations with aging have been noted in frailty in older adults, a clinical syndrome of high risk for mortality and other adverse outcomes. Using a frailty-related phenotype (FRP), we investigated in the Multicenter AIDS Cohort Study whether progressive deterioration ...

This paper presents the results of an experimental study into the behavior of concrete-filled steel tube columns confined by fiber-reinforced polymer (FRP). Eleven columns were tested to investigate the effects of the FRP layer number, the thickness of the steel tube and concrete strength on their load capacity and axial deformation capacity. The experimental results indicated that the FRP wrap...

This paper presents the results of an experimental study of the mechanical properties of FRP reinforcement bars, used as internal reinforcement in concrete structures, at elevated temperatures. Two types of FRP bars namely: carbon fibre reinforced polyester bars of 9.5mm diameter and glass fibre reinforced polyester bars of 9.5mm and 12.7 mm diameter were used in the study. For comparison, conv...

The objective of this research project is to examine the use of FRP materials for bridge construction. In particular, this project utilizes glass FRP (GFRP) honeycomb sandwich panels. The installation of three bridges, one comprised solely of the FRP panels and two comprised of the FRP panels supported by steel girders, is outlined. Furthermore, results of preliminary testing conducted on the F...

Effects of ouabain and catecholamines_ and their modifications_ by propranolol were investigat ed on the functional refractory period ( FRP ), contractile force and heart rate in isolated atria of guinea-pigs_ and rats.. Catecholamines produced a transient decrease in the FRP of guinea-pig atria, while ouabain caused a continual increase after a latent period of 5 to 10 minutes. The FRP in rat ...

An innovative concept for normalizing the multiple seismic performance objectives of retrofitted structures was recently introduced by the authors. Referred to as a damping-enhanced strengthening, this integrated damping and strengthening strategy included the bonding component between FRP sheets and viscoelastic layers as well as the anchoring component of FRP sheets into concrete. Although an...