Abstract: A system and method for growing and maintaining biological material including producing a protein associated with the tissue, selecting cells associated with the tissue, expanding the cells, creating at least one tissue bio-ink including the expanded cells, printing the at least one tissue bio-ink in at least one tissue growth medium mixture, growing the tissue from the printed at least one tissue bio-ink, and maintaining viability of the tissue.

Abstract: Adhesive/adherend systems of this invention comprise a siloxane-modified adhesive component and a siloxane-modified adherend component. The siloxane-modified adhesive component is prepared by combining an epoxy resin with an organosilane ingredient, a polysiloxane resin, an amine hardener, an organometallic catalyst, a base catalyst, and any thickener and extender pigment. The siloxane-modified adherend component is prepared using a polysiloxane resin and may also contain other resins such epoxy, phenolic, polyester, vinyl ester, polyurethane, polyamide, melamine, furan, acrylate, thermoplastic polyvinyl chloride, polyethylene, polycarbonate, ABS, polystyrene, ethylene vinyl acetate, polyvinyl acetate, polyamide, and polypropylene resins.

Abstract: Fire resistant pipes and pipe fittings include a structural pipe wall formed from helically wound reinforcing fiber that is bonded together with a thermoset polymer resin selected from the group consisting of phenolic resins, siloxane-modified phenolic resins, furan resins, and mixtures thereof. In a first embodiment, a resin rich fire resistant layer is applied to the surface of the structural pipe wall. The carrier is capable of accommodating a large amount of resin. The resin used to impregnate the carrier is selected from the same group of resins used to form the structural pipe wall. It is desired that both resins be compatible, and preferably be the same, to facilitate forming a bond between the structural pipe wall and the fire resistant layer during cure.

Abstract: Fire resistant pipes and pipe fittings include a structural pipe wall formed from helically wound reinforcing fiber that is bonded together with a thermoset polymer resin selected from the group consisting of phenolic resins, siloxane-modified phenolic resins, furan resins, and mixtures thereof. A jacket is disposed around the structural pipe wall and comprises alternating release layers and fiber-reinforced resin layers. The release layer is formed from a material that is incompatible with the resin of the structural pipe wall and fiber-reinforced resin layers, and is energy absorbing to improve impact resistance and reduce thermal stress. The jacket is formed having a sufficient number of alternating layers, having sufficient layer thicknesses, to protect the structural pipe wall from heat induced failure produced by exposing the outermost pipe wall to a 1,000.degree. C. flame for at least five minutes in a dry condition.

Abstract: Phenolic siloxane compositions are prepared in a first embodiment by combining phenol with an aldehyde and an alkoxy or silanol-functional silicone intermediate; in a second embodiment by combining a phenolic novolac resin with a formaldehyde donor and an alkoxy or silanol-functional silicone intermediate; and in a third embodiment by combining a phenolic resole resin with an alkoxy or silanol-functional silicone intermediate. Optionally, a catalyst to facilitate formation of a phenolic resin from phenol and formaldehyde can be added, a catalyst to facilitate condensation of the phenolic resin can be added, and at least one catalyst to facilitate hydrolysis and/or condensation of the silicone intermediate can be added. The phenolic resin catalyst can include acids, bases, and formaldehyde donors. The silicone intermediate catalyst can include organometallic compounds, amine compounds, and mixtures thereof.

Abstract: An improved security document which protects documents from copying on color copying machines. The document has cancellation terms and background pattern in two tones. If the copier is adjusted to obscure the cancellation term on reproduced copies at one tone, the cancellation at the other tone will appear. In an alternative embodiment, the density of the cancellation term and the background pattern vary across the face of the document. In this case, the cancellation term will appear somewhere on the copy no matter what copier adjustments are made.

Abstract: A putting guide for use in improving a golfer's stroke during practice putting. The guide has a forwardly facing flat surface and a pair of rearwardly extending mutually spaced leg engaging members suitably contoured to be held between a golfer's legs. The leg engaging members are mounted between a pair of parallel tracks on the rear of the forwardly facing flat surface, and the spacing between the leg engaging members may be varied by moving same along the length of the parallel tracks. An adjustable length guide clamp has one end for attachment to the shaft of a putter and the other end for sliding movement along the forwardly facing flat surface of the guide member.

Abstract: An energy-efficient ballast or energizing circuit for fluorescent lamps which is relatively uncomplicated and which can be manufactured relatively simply and inexpensively. An on-off switch and dimming means are connected in a low-voltage portion of the circuitry to permit less expensive wiring to be utilized. A base-driven, high frequency push-pull transistorized inverter circuit is utilized for energizing the lamps. The inverter drive is pulse width modulated to effect dimming, and to save energy additional transistor circuitry is provided for ensuring rapid turn-on and turn-off of the inverter transistors. A photo-responsive means senses ambient light and lamp light at a surface being illuminated by both and controls pulse width in accordance therewith. Thermostat means are mounted on the heat sinks of the inverter transistors and are connected in parallel with the on-off switch to effect shut-off if overheating occurs.

Abstract: Disclosed is an apparatus and process for ultrasonically identifying and coating articles having differing dimensional characteristics wherein, a series of such articles are moved in a random sequence past a predetermined point where the presence of each article is electronically sensed. At least two ultrasonic wave transmitters located at known distances from this point impinge waves on each article when it arrives at said point. One of the wave transmitters is positioned above the article. Waves reflected from the articles are received by ultrasonic receivers and are compared to and matched with similar code-number-identified wave patterns contained in a computer data base to identify each article's dimensional characteristics and select a predetermined control sequence program for a means for coating the articles.