All Matrix cushions incorporate a Intelli-GelÂ® core, a dry polymer gel core that provides a unique combination of skin protection, support, and comfort. The Intelli-GelÂ® core is an ideal support surface for wheelchair cushions that provides a superior combination of performance, simplicity, and durability.ll Matrix cushions incorporate a Intelli-GelÂ® core, a dry polymer gel core that provides a unique combination of skin protection, support, and comfort. Often these wheelchair seating issues are associated with conditions such as: 1  Parkinsonâs disease. 2  Alzheimerâs disease. 3  Stroke (or other CVA). 4  Multiple Sclerosis.
Kenneth and Mamie Clark decided to try to improve social services for troubled youth in Harlem, as there were virtually no mental-health services in the community. Kenneth Clark was then an assistant professor at the City College of New York and Mamie Clark was a psychological consultant doing psychological testing at the Riverdale Children's Association.
Crick described what he saw as the failure of Maurice Wilkins and Rosalind Franklin to cooperate and work towards finding a molecular model of DNA as a major reason why he and Watson eventually made a second attempt to do so.