Abstract: A system for preparing a polymeric mixture includes: a containment device configured to distribute dry polymeric materials; a receiving chamber in fluid communication with the containment device; a wetting bowl; a dispersing channel; and a mixing chamber connected to the dispersing channel. A method of preparing a polymeric mixture includes distributing water and dry polymeric materials through the various components of the system and mixing the materials with the mechanical mixing device.

Abstract: A system for preparing a polymeric mixture includes: a containment device configured to distribute dry polymeric materials; a receiving chamber in fluid communication with the containment device; a wetting bowl; a dispersing channel; and a mixing chamber connected to the dispersing channel. A method of preparing a polymeric mixture includes distributing water and dry polymeric materials through the various components of the system and mixing the materials with the mechanical mixing device.

Abstract: A chemical treatment apparatus for diluting and activating a polymeric material can include a mixing chamber having a first end, a second end, a first baffle plate positioned between the first end and second end, a high shear mixing zone positioned between the first end of the mixing chamber and the first baffle plate, and a low shear mixing zone positioned downstream from the high shear agitation zone between the second end of the mixing chamber and the first baffle plate. The volume ratio of the high shear mixing zone to the low shear mixing zone can be in the range of 1:2 to 1:10. A method and system for diluting and activating polymeric materials are also disclosed.

Abstract: A system for preparing a polymeric mixture includes: a containment device configured to distribute dry polymeric materials; a receiving chamber in fluid communication with the containment device; a wetting bowl; a dispersing channel; and a mixing chamber connected to the dispersing channel. A method of preparing a polymeric mixture includes distributing water and dry polymeric materials through the various components of the system and mixing the materials with the mechanical mixing device.

Abstract: A system for preparing a polymeric mixture includes: a containment device configured to distribute dry polymeric materials; a receiving chamber in fluid communication with the containment device; a wetting bowl; a dispersing channel; and a mixing chamber connected to the dispersing channel. A method of preparing a polymeric mixture includes distributing water and dry polymeric materials through the various components of the system and mixing the materials with the mechanical mixing device.

Abstract: A system for preparing a polymeric mixture includes: a containment device configured to distribute dry polymeric materials; a receiving chamber in fluid communication with the containment device; a wetting bowl; a dispersing channel; and a mixing chamber connected to the dispersing channel. A method of preparing a polymeric mixture includes distributing water and dry polymeric materials through the various components of the system and mixing the materials with the mechanical mixing device.

Abstract: A chemical treatment apparatus for diluting and activating a polymeric material can include a mixing chamber having a first end, a second end, a first baffle plate positioned between the first end and second end, a high shear mixing zone positioned between the first end of the mixing chamber and the first baffle plate, and a low shear mixing zone positioned downstream from the high shear agitation zone between the second end of the mixing chamber and the first baffle plate. The volume ratio of the high shear mixing zone to the low shear mixing zone can be in the range of 1:2 to 1:10. A method and system for diluting and activating polymeric materials are also disclosed.

Abstract: A chemical treatment apparatus for diluting and activating a polymeric material can include a mixing chamber having a first end, a second end, a first baffle plate positioned between the first end and second end, a high shear mixing zone positioned between the first end of the mixing chamber and the first baffle plate, and a low shear mixing zone positioned downstream from the high shear agitation zone between the second end of the mixing chamber and the first baffle plate. The volume ratio of the high shear mixing zone to the low shear mixing zone can be in the range of 1:2 to 1:10. A method and system for diluting and activating polymeric materials are also disclosed.

Abstract: A chemical treatment apparatus for diluting and activating a polymeric material can include a mixing chamber having a first end, a second end, a first baffle plate positioned between the first end and second end, a high shear mixing zone positioned between the first end of the mixing chamber and the first baffle plate, and a low shear mixing zone positioned downstream from the high shear agitation zone between the second end of the mixing chamber and the first baffle plate. The volume ratio of the high shear mixing zone to the low shear mixing zone can be in the range of 1:2 to 1:10. A method and system for diluting and activating polymeric materials are also disclosed.

Abstract: An apparatus and a method for detecting scene change using difference of MAD(Mean Absolute Difference), so called dMAD wherein the method for detecting scene change using difference of mean absolute difference(dMAD) between image frames by use of scene change detecting apparatus comprising frame memory, first absolute calculator, accumulator, multiplicator, first latch circuit, second absolute calculator, first comparator, second comparator, selector and second latch circuit, the method comprising the steps of: (A) calculating MAD of the `n`th input image frame and checking whether scene change judgement variable, which is used for current frame according to scene change of previous frame, is `1`; (B) judging scene change only using MAD since current frame corresponds to the second frame of new scene when scene change variable is `1` at said step (a); (C) judging scene change using dMAD as scene change variable when scene change variable is not `1` at said step (a); (D) saving scene change state and MAD of th

Abstract: A liquid (ionized) composition emitting far infrared rays and a method for preparation thereof which can be used for a variety of applications is disclosed. The composition is prepared according to a preparing method, comprising the steps of: dissolving sodium silicate, sodium aluminate, sodium oxide, sodium thiosulfate, germanium dioxide, and highly pure white sugar at a temperature of 20.degree. to 40.degree. C. and mixing the dissolved solutions to resultingly prepare a first solution; adding a second solution made by ionizing gold to chloroauric acid and a third solution made by ionizing silver nitrate to silver thiosulfate to the first solution; and maintaining the resultant mixture at ordinary temperature (15.degree. to 25.degree. C.) for 48 to 72 hours. The highly pure white sugar of the first solution in the composition may further comprise an aqueous potassium carbonate solution added therein.

Abstract: The present invention provides a power window control system of a vehicle for raising or lowering windows that is controlled by user operated switches which supply or cut off vehicle battery power to the motor that raises or opens the window. A combination of overcurrent protection circuitry and overheating protection circuitry is used to allow switches to be used that are less expensive than the conventionally used switches which can undesirably arc and, eventually malfunction, as previously described.

Abstract: This invention relates to novel processes for preparing substituted pyrrolizine compounds. More particularly, it relates to novel processes for preparing 5-aroyl-2,3-dihydro-1H-pyrrolizine-1,1-dicarboxylate of the following formula (I) from pyrrole.

Abstract: A therapeutic, portable water heating bed assembly having a pair of beds, includes a water heater attached to and disposed within a base member of the bed, a water pillow which functions as a water tank, a straight water pipe extending through a concrete plate of the base member independently, a power control switch connected to the water heater, and a laminated paper on the concrete plate, whereby the bed assembly can be easily moved, the water pillow can maintain cold water, and the laminated paper and the cool water pillow can warm and treat a human body lying on the beds.

Abstract: An on-screen display device which comprises: a microprocessor responsive to signals from a key pad and to a synchronizing signal in received video picture signals for providing digital display signals corresponding to the synchronizing signals and digital signals corresponding to the signals from the key pad; a digital-to-analog converter for converting the digital signals into analog voltage signals, and for generating an oscillating frequency signal in response to the digital display signals to adjust the position and size of characters displayed on the screen; and an on-screen display circuit for receiving the synchronizing signals and for receiving the digital signals from the microprocessor and the oscillation frequency signal from the digital-to-analog converter and generating signals for controlling a display of the synchronizing frequencies and picture control on the screen as on-screen display characters.

Abstract: A method is disclosed for the treatment of water, containing an oxidizing agent, flowing through a conduit or contained in a vessel. The oxidation reduction potential or the ORP of the water is continuously measured at a sensing position and a reducing agent is fed to the water in response to the measured ORP to neutralize the oxidizing agent and maintain a desired concentration of reducing agent residuals in the water at the second sensing position.

Abstract: A valve for diluting and activating polymer molecules used in wastewater treatment is designed to divert a desired amount of dilution water around the primary dilution and activation apparatus to the inlet of the secondary dilution apparatus. Water in the valve passes through a slot which extends through about 180 degrees. The ends of the slots have square corners, so that the total volume of water which passes through the valve and the relative proportion of water which passes through the primary and secondary activation apparatus can be adjusted independently of each other. In this manner, a control system can be used which only requires information regarding the total amount of water supplied to the system in order to execute operator instructions as to the total volume of water required and the proportions of water to be supplied to the primary and secondary dilution apparatus.

Abstract: Polymer activation apparatus for activating a liquid polymer emulsion in dilution water includes a first processing zone in which the polymer solution is subjected to a high mean shear rate for a predetermined period of time, and a second processing zone in which the polymer solution is subjected to a low mean shear rate for a longer period of time. The shear rates and residence times in the zones are selected to produce maximum activation in less total processing and aging time than that required in known apparatus.

Abstract: An arrangement for displaying characters and/or graphics on the screen of a television system including a brightness control section for controlling the black level of video images includes a character blanking section for blanking behind the video image so as to make the characters and/or graphics more visible. The character blanking section is coupled to the brightness control section for generating an "ultra-black" character blanking level which tracks, but is slightly greater (in the black direction) than the black level for the video image.

Abstract: Polymer activation apparatus for activating a liquid polymer emulsion in dilution water includes a first processing zone in which the polymer solution is subjected to a high mean shear rate for a predetermined period of time, and a second processing zone in which the polymer solution is subjected to a low mean shear rate for a longer period of time. The shear rates and residence times in the zones are selected to produce maximum activation in less total processing and aging time than that required in known apparatus.