A retaining wall structure includes a number of bag units piled to form a wall and interconnecting units disposed between vertically adjacent bag units. The shaft is provided with a toothing, into which a ratchet lever of the functional part engages. The resonator may be tuned by modifying the physical properties of the microbubble, allowing the resonator to be used as an optical filter. 01% by weight based on the total weight of the aqueous composition. The implantable cardiac therapy device can be linked to a cardiac network of knowledge workers that evaluate the data generated by the device and provide instructions to remotely program the device.