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In this work, porous Al alloy-based composites with varying Ti-coated diamond contents (0, 4, 6, 12 and 15 wt.%) were prepared, employing the powder metallurgy route and using a fixed amount (25 wt.%) of polymethylmethacrylate (PMMA) as a space holder. The effects of the varying wt.% of diamond particles on the microstructure, porosities, densities and compressive behaviors were systematically evaluated. The microstructure study revealed that the porous composites exhibited a well-defined and uniform porous structure with good interfacial bonding between the Al alloy matrix and diamond particles. The porosities ranged from 18% to 35%, with an increase in the diamond content. The maximum value of plateau stress of 31.51 MPa and an energy absorption capacity of 7.46 MJ/m3 were acquired for a composite with 12 wt.% of Ti-coated diamond content; beyond this wt.%, the properties declined. Thus, the presence of diamond particles, especially in the cell walls of porous composites, strengthened their cell walls and improved their compressive properties. [ABSTRACT FROM AUTHOR]

Epilepsy requires long-term treatment that interferes with individuals' social relationships. Because the effects of psychosocial burden and stigma perception on patients with epilepsy in Jordan have not been explored, the study assessed the relationship among psychosocial burden, stigma of epilepsy, and demographic variables. Subjects were adult patients with epilepsy (N = 200) registered at hospital clinics. Two published instruments were used to measure outcomes. The participants in the study perceived the burden and stigma of epilepsy as moderate. A strong, positive correlation between psychosocial burden and stigma perception among participants was found. Stigma perception, employment, and education variables explained 31.6% of variation of the level of psychosocial burden. The results showed a relationship between stigma perception and psychosocial level, and this provides information that may assist health care providers in formulating strategic plans to improve the care, safety, and quality of life of patients with epilepsy in Jordan. [ABSTRACT FROM AUTHOR]