1. Controllably vented aerodynamic pressure modulating drogue

2. Such a structure is usable as a controllably accessible optical memory.

3. A process and appropriate devices are disclosed for controllably administering active substances by iontophoresis.

4. The container's conditions are then controllably varied, at a relatively high frequency, to accelerate the aging process.

5. The controllably adjustable weir device may be optionally installed into an excavation provided downstream adjacent to the tailrace pool area.

6. One or more adjustable members controllably move and position the cover with respect to the drainage system body.

7. Momentum-free running exercise machine for both agonist and antagonist muscle groups using controllably variable bi-directional resistance

8. Additionally, the MPCDUs and the APCDU each controllably supply ac electric power to, and demand power from, an ac tie bus.

9. The system comprises: (a) a controllably adjustable weir device installed into a downstream portion of the waterway adjacent a distal end of the tailrace pool area.

10. The Copolymers were prepared using a less active BA 6 TREN based ligand that was soluble in the reaction medium to controllably polymerize butyl acrylate in a solution of the polyethylene macroinitiator.(10,11) Depending on the mole ratio of the segments such a material could find application as an impact modifier for polyethylene, a