Clock alignment circuits and techniques for reducing power dissipation, increasing power supply noise immunity, decreasing process and temperature variation sensitivity, and providing a wide operating range. Often, and particularly for the control of deer, it is desirable to increase the height of existing fence that uses steel T-posts for support. First and second thrust control cylinders are parallel to each other and rotatable about respective axes transverse to the passageway central axis. A metallic layer is formed over the first dielectric layer and within the vias. The present invention provides methods of using PTHrP, or analogs thereof, for the treatment of metabolic bone disorders that are both effective and have an increased safety. An agricultural harvester unloading system is operated to deposit grain from the harvester into the hopper of the conveyor.