Abstract: Disclosed are systems and methods for determining the logarithmic transfer function of a plurality of analog signals using digital circuitry components. The apparatus is a digital crystal video receiver that includes an analog-to-digital converter and a programmable logic component that determines the logarithmic transfer function of plurality of signals. The programmable logic component may include a FPGA, microprocessor, macroprocessor, combinations of discrete logic components, etc. The programmable logic component includes memory having one of a look-up table and an instruction set that enables the programmable logic component to process or calculate a signal that is logarithmically proportional to the plurality of signals.

Abstract: Disclosed are systems and methods for determining the logarithmic transfer function of a plurality of analog signals using digital circuitry components. The apparatus is a digital crystal video receiver that includes an analog-to-digital converter and a programmable logic component that determines the logarithmic transfer function of plurality of signals. The programmable logic component may include a FPGA, microprocessor, macroprocessor, combinations of discrete logic components, etc. The programmable logic component includes memory having one of a look-up table and an instruction set that enables the programmable logic component to process or calculate a signal that is logarithmically proportional to the plurality of signals.

Abstract: Provided is a bulk storage silo defined by a frame and having a flexible fabric liner, internal load distribution control, vibratory discharge and helicopter-type content spreaders.

Abstract: A bank containing a coin receiving base portion and a detachable top portion containing a battery operated locking system. Such system contains an electromagnetic coil lock for locking together the two portions. A switch responsive to placement of the top portion on the base portion for opening a circuit to de-energize the coil lock so as to lock the portions together. A coin slot switch is also provided to temporarily light a lamp upon dropping of a coin. A mercury switch is also provided to prevent opening of the bank when inverted.A coin sensor is also provided on the top portion for allowing the coil lock to be activated to enable the removal of the top portion when the sensor senses the coin receiving base portion being sufficiently filled with coins.

Abstract: The invention is a method of reducing formaldehyde emission from wood-based composite boards bonded with aminoplast resins. A salt mixture comprising urea, or one of its analogs, a readily decomposible ammonia liberating compound and, alternatively, a resin catalyst is prepared in a finely granulated form. This is then added to the dried wood particles and blended, preferably prior to the addition of the adhesive binder resin. The salt mixture comprises 12-20 parts of the ammonia liberating compound, 65-88 parts of urea or its analog, and 0-15% of the catalyst. From 6-22.5% by weight of this mixture is used, based on resin solids. Formaldehyde evolution is reduced by 45-80% compared with untreated particleboard without adverse effect on physical properties or press time.