Various embodiments provide an electronic device that includes video storage memory, a video signal receiver, and a video storage controller. The novel method includes transmitting a non-beamformed or beamformed ultrasound wave into the medium, receiving more than one echoed ultrasound wave from the medium, and converting the received echoed ultrasound wave into digital data. A flowable insulation layer is formed to fill the trench. The cell also includes a first read driver connected between the first pass node and a source potential, and a control terminal of the first read driver connected to the second latch node of the second inverter. A heavy-construction machine bucket including such a system, and a method for implementing such a system are also described. Some polypeptides of the invention exhibit unique receptor binding profiles compared to known, naturally occurring vascular endothelial growth factors.