A distance \u201ca\u201d from a first gate electrode of a first transistor of a high-frequency circuit to a first contact is greater than a distance \u201cb\u201d from a second electrode of a second transistor of a digital circuit to a second contact. Generally, the formulations are administered to animals in need thereof in therapeutically effective amounts of beta-carotene for the purpose intended. The collected radiation can include a plurality of frequency bands. Shields are fitted to guard against entrapment of shoes or other apparel between the moving and stationary parts. One embodiment utilizes at least two different Walsh codes of different lengths in order to make use of the three quarters of the Walsh space not utilized by low-rate legacy channels.