Abstract: Systems and methods are described for inducing tissue vibration for magnetic resonance elastography is described. The system includes a hydraulic drive component that is mechanically linked to a pneumatic drive component. The pneumatic drive component is pneumatically linked to a passive pneumatic actuator component that is positionable on a patient proximate to a target tissue. Alternating linear movement of an actuator piston within the passive actuator component induces vibration of the target tissue. The frequency of the alternating linear movement of the actuator piston within the passive pneumatic actuator component is controlled by adjusting how fluid is pumped in the hydraulic drive component.

Abstract: Systems and methods are described for inducing tissue vibration for magnetic resonance elastography is described. The system includes a hydraulic drive component that is mechanically linked to a pneumatic drive component. The pneumatic drive component is pneumatically linked to a passive pneumatic actuator component that is positionable on a patient proximate to a target tissue. Alternating linear movement of an actuator piston within the passive actuator component induces vibration of the target tissue. The frequency of the alternating linear movement of the actuator piston within the passive pneumatic actuator component is controlled by adjusting how fluid is pumped in the hydraulic drive component.

Abstract: A system for inducing tissue vibration for magnetic resonance elastography is described. The system includes a passive actuator component, a first hose, a second hose, and a driving component. The passive actuator component is positionable proximate to a target tissue and includes a linearly movable piston assembly enclosed in a housing. The driving component includes a fluid pumping system and is configured to alternatingly pump a fluid through the first hose and through the second hose. When fluid is pumped through the first hose, the piston assembly moves in a first linear direction and, when fluid is pumped through the second hose, the piston assembly moves in the opposite direction. The alternating linear movement of the piston assembly induces vibration in the target tissue.

Abstract: A system for inducing tissue vibration for magnetic resonance elastography is described. The system includes a passive actuator component, a first hose, a second hose, and a driving component. The passive actuator component is positionable proximate to a target tissue and includes a linearly movable piston assembly enclosed in a housing. The driving component includes a fluid pumping system and is configured to alternatingly pump a fluid through the first hose and through the second hose. When fluid is pumped through the first hose, the piston assembly moves in a first linear direction and, when fluid is pumped through the second hose, the piston assembly moves in the opposite direction. The alternating linear movement of the piston assembly induces vibration in the target tissue.

Abstract: A mirror includes an electro-optic mirror subassembly, and a thin-profiled bezel attached around a perimeter of the electrochromic mirror subassembly. The electro-optic mirror subassembly is supported on a carrier by an adheringly bonded heater and foam tape in a laminar arrangement. The bezel may be bonded to an edge of the front surface of the front element of the electro-optic mirror subassembly, and/or may be bonded and/or interlockingly mechanically attached to an edge of the carrier. Alternatively, the bezel can be a strip of paint or thin coating material. The bezel can be molded in place, or can be pre-molded and elastically stretched to permit assembly. In one form, the bezel includes a laterally-extending fin that prevents seeing past the bezel into the inside of a mirror housing. In at least one embodiment, the assembly has no bezel or only a bezel on one edge.

Abstract: A cross flow filtration apparatus for nanofiltration or reverse osmosis has pressure vessels with a plurality of filter cartridges in each vessel. A feed port is provided at an intermediate position on the side of the vessel, and two permeate flows or branches exit opposite ends of the vessel, and the first branch has a characteristically high “upstream” flux and quality, while the second is of lesser flux and/or quality. The system provides a high degree of moduarity, enhancing flux or yield at a reduced driving pressure or overall pressure drop. Centered or off-center port, and a stop or valve in the permeate stream may apportion flows between the two outlets. Staged systems may employ a first stage bypass to achieve a target quality with increased yield. A flow divider or adaptor permits the cartridges to fit and seal in the vessel and an installation tool or sleeve may facilitate installation or replacement of cartridges having a directional perimeter seal.

Abstract: A mirror includes an electro-optic mirror subassembly, and a thin-profiled bezel attached around a perimeter of the electrochromic mirror subassembly. The electro-optic mirror subassembly is supported on a carrier by an adheringly bonded heater and foam tape in a laminar arrangement. The bezel may be bonded to an edge of the front surface of the front element of the electro-optic mirror subassembly, and/or may be bonded and/or interlockingly mechanically attached to an edge of the carrier. Alternatively, the bezel can be a strip of paint or thin coating material. The bezel can be molded in place, or can be pre-molded and elastically stretched to permit assembly. In one form, the bezel includes a laterally-extending fin that prevents seeing past the bezel into the inside of a mirror housing. In at least one embodiment, the assembly has no bezel or only a bezel on one edge.

Abstract: A mirror includes an electro-optic mirror subassembly, and a thin-profiled bezel attached around a perimeter of the electrochromic mirror subassembly. The electro-optic mirror subassembly is supported on a carrier by an adheringly bonded heater and foam tape in a laminar arrangement. The bezel may be bonded to an edge of the front surface of the front element of the electro-optic mirror subassembly, and/or may be bonded and/or interlockingly mechanically attached to an edge of the carrier. Alternatively, the bezel can be a strip of paint or thin coating material. The bezel can be molded in place, or can be pre-molded and elastically stretched to permit assembly. In one form, the bezel includes a laterally-extending fin that prevents seeing past the bezel into the inside of a mirror housing. In at least one embodiment, the assembly has no bezel or only a bezel on one edge.

Abstract: A priority biased load sense hydraulic system for hydraulic excavators is provided. The hydraulic system includes first and second variable flow pumps which are coupled in load sense arrangement. The first pump is coupled to a first valve bank having a first valve section having a main spool and a compensator spool having an orifice therein, a second valve section having a main spool and a compensator spool having an orifice therein, and third and fourth valve sections each having a main spool and a compensator spool. The second pump is connected to a second valve bank. The second valve bank includes a first section having a main spool and a compensator spool having an orifice. A second valve section having a main spool and a compensator spool having an orifice and a third valve section. The compensator spools in the first and second valve banks serve to prioritize hydraulic fluid flow through the valve banks thereby affectively prioritizing the hydraulic functions receiving hydraulic fluid flow.

Abstract: A light absorbing medium to be interposed under photosensitive layers, such as a photo-resist for integrated circuit "chips" to eliminate defects caused by reflected light, has a polymer vehicle which can penetrate into small depressions of a substrate and form a thin, smooth and uniform coating. The coating includes a light absorbing dye. This light absorbing layer is imageable in the process. The light absorbing material eliminates many of the defects caused by reflected light resulting in increased sharpness of the images in the photo-resist. The material reduces the losses due to defects and increases the yield of useable product.

Abstract: A light absorbing medium to be interposed under photosensitive layers, such as a photo-resist for integrated circuit "chips" to eliminate defects caused by reflected light, has a polymer vehicle which can penetrate into small depressions of a substrate and form a thin, smooth and uniform coating. The coating includes a light absorbing dye. This light absorbing layer is imageable in the process. The light absorbing material eliminates many of the defects caused by reflected light resulting in increased sharpness of the images in the photo-resist. The material reduces the losses due to defects and increases the yield of useable product.

Abstract: A novel apparatus and method are provided for monitoring gas entrainment in liquid precursors for reaction injection molding (RIM). In accordance with the invention, a nucleated RIM precursor is sampled and the sample subjected to a controlled volumetric change. The measured pressure of the expanded or compressed sample is compared to that corresponding to the ideal degree of gas entrainment. The comparison is used to control the addition or withdrawal of entrained gas.

Abstract: The instant invention is directed to a process for the production of microcellular elastomeric moldings comprising:(A) introducing a reaction mixture into a closed mold, said reaction mixture comprising:(i) an organic polyisocyanate,(ii) a hydroxyl group containing compound having a molecular weight of from 1800 to 12,000,(iii) a catalyst for the reaction between hydroxyl groups and isocyanate groups,(iv) an active aromatic diamine having at least one alkyl substituent in the orthoposition to a first amino group and two alkyl substituents in ortho-position to a second group, and(v) air and/or nitrogen dissolved under pressure in any one or more of Components (i), (ii), (iii) or (iv),(B) allowing said reaction mixture to react in said mold and(C) removing the resultant product from said mold, the improvement wherein in any of Components (i), (ii), (iii) or (iv) which does contain said air and/or nitrogen dissolved therein there is included an inorganic, finely divided, nitrogen adsorbing agent in an amount suf

Abstract: Herein disclosed is a crop harvesting machine for collecting stalk crops having seed pods near ground level. The harvester includes a relatively large horizontally disposed reel structure. As the reel rotates, bat-assemblies thereon successively sweep downward into the crop and urge the stalks against a cutter bar. These assemblies feature a combination of flexible flaps and pickup reel tines which conserve and prevent loss of crops.