The mode-of-action for PSOA is not known, but of its four primary structural elements (i.e., hydroperoxide structure, acid component, sulfonate moiety and monohydroxy structure), the hydroperoxide structure is generally considered to be the defining component of the toxicity of PSOA [13].
The redesign is likely to eliminate arcade columns, which the emergency management agency recommends avoiding in its design primer since they are "primary structural elements that hold up part of the building," said Dr. Hinman, the author of the report, in an interview.
Cold-formed steel members are finding increasing acceptance in the construction markets as primary structural elements.
Thin-walled shells and panels of various constructions find wide use as primary structural elements in simple and complex configuration.
Thin-walled plates and panels of various constructions find wide use as primary structural elements in simple and complex configuration.
From a clean sheet perspective it uses composites heavily throughout the vehicle, including the primary structural elements, to gain significant advantages in performance and cost.
Collagen I is the most abundant collagen in mammals (70 90% of total body collagen) and its fibrils are the primary structural elements of all connective tissues, providing a structural scaffold and stabilized by lysyl oxidase cross-linking pathway.
Collagen type I fibrils are the primary structural elements of all connective tissues, providing a structural scaffold for other components primarily due to native cross-linking pathway of lysyl oxidase.
Cold-formed steel members are increasingly used as primary structural elements in the building industries around the world due to the availability of thin and high strength steels and advanced cold-forming technologies.
