The stiff fused ring structure of cholesterol adds rigidity to liquid-crystalline phospholipid bilayers and strengthens them against mechanical rupture.
So a cast-aluminum frame, using the engine as a stressed member for added rigidity, was developed, and there's a new alloy swing arm.
Another way to have designed the structure, said Ms. Waggoner, an art historian who studied architecture, would have been to rely more on the parapets to add rigidity.
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They were driven into the ground, tied together laterally with vegetable fibres, and then plastered over with wet clay to give added rigidity and weatherproofing.
That extended conjugation path adds rigidity to the large molecule, which leads in electropolymerization to the formation of ordered polymeric structure.
In both systems the space in the outside wall was filled with an enclosure material to impart added rigidity to the frame; brick or wattle and daub were often used.
Ryan Gibbons, 32, a waiter and photographer in Napa, Calif., uses old X-ray films to give his duct tape wallets added rigidity and a smoother surface for adhering photographs.
In practice, the choice facing banks is either to find a way to compete with rivals that are not bound by the cap, or to risk losing star employees to competitors.George Osborne, Britain's finance minister, was unable to block the measure despite arguing that it will simply drive up base salaries and add rigidity to the banking system.
It added rigidity to the original tensegrity structure and changed its mechanical properties.
