Abstract: An embodiment in accordance with the present invention provides a device for collecting a specimen of oral fluids. The device includes an elongate tubular member with a first end being configured to come into contact with a mouth of a subject. The device also includes a coupler, wherein the first end of the coupler is configured to couple to a second end of the elongate tubular member and wherein the second end of the coupler is configured to couple the device to a collection vial. A chamber is defined by the outer wall of the elongate tubular member and positioned proximate to the second end of the elongate tubular member, and a filter is disposed within the chamber. An exhaust port is defined by the coupler to allow pressure to escape from the device to ease the collection of the specimen.

Abstract: An embodiment in accordance with the present invention provides a device for collecting a specimen of oral fluids. The device includes an elongate tubular member with a first end being configured to come into contact with a mouth of a subject. The device also includes a coupler, wherein the first end of the coupler is configured to couple to a second end of the elongate tubular member and wherein the second end of the coupler is configured to couple the device to a collection vial. A chamber is defined by the outer wall of the elongate tubular member and positioned proximate to the second end of the elongate tubular member, and a filter is disposed within the chamber. An exhaust port is defined by the coupler to allow pressure to escape from the device to ease the collection of the specimen.

Abstract: An improved method of making a lithoplate from a 5XXX type alloy which includes controlling the composition and casting practices to eliminate forming a pine tree metal structure in an ingot used for rolling a workpiece to be made into lithoplate. The method also includes homogenizing and hot rolling the ingot at a controlled initial temperature to produce a desired grain and metal microstructure in the sheet rolled from the ingot which is suited for providing a surface having substantially uniform and evenly distributed craters produced by an electrochemical method of graining.

Abstract: A non-destructive method for determining the presence of anisotropic structures in the interior of an as-formed metal. The method includes the steps of (a) attaching an ultrasonic transducer to the metal item prior to working the metal; (b) energizing the transducer to generate shear ultrasonic waves capable of penetrating the metal item; (c) measuring the time of flight of the shear ultrasonic waves through the metal item; (d) rotating the transducer approximately 90.degree.; (e) repeating step (c); and determining the difference between steps (c) and (e) to determine the presence of anisotropic structures in the interior of the metal item.

Abstract: An improved method of making a lithoplate from a 5XXX type alloy which includes controlling the composition and casting practices to eliminate forming a pine tree metal structure in an ingot used for rolling a workpiece to be made into lithoplate. The method also includes homogenizing and hot rolling the ingot at a controlled initial temperature to produce a desired grain and metal microstructure in the sheet rolled from the ingot which is suited for providing a surface having substantially uniform and evenly distributed craters produced by an electrochemical method of graining.

Abstract: An improved method of making a lithoplate from a 5XXX type alloy which includes controlling the composition and casting practices to eliminate forming a pine tree metal structure in an ingot used for rolling a workpiece to be made into lithoplate. The method also includes homogenizing and hot rolling the ingot at a controlled initial temperature to produce a desired grain and metal microstructure in the sheet rolled from the ingot which is suited for providing a surface having substantially uniform and evenly distributed craters produced by an electrochemical method of graining.

Abstract: Structural streaking defects in anodized aluminum architectural sheet products are substantially reduced or eliminated in 1XXX and 5XXX type aluminum alloys by including therein 0.01 to 0.08% of chromium or manganese, preferably both. It is preferred to combine such with continuously casting the ingot under high chill rate conditions such as employing low liquid metal head within the direct chill mold.

Abstract: A process and an apparatus are disclosed for reducing macrosegregation adjacent to a longitudinal centerline of a solidified cast body. Such cast bodies are preferably large size aluminum alloy ingots made in a continuous casting mold. The ingot is formed from a pool of molten metal having flow currents present therein. The flow currents tend to detach the tips of dendrites growing around the edge of the liquid pool and transport them to the center of the ingot. These detached dendrites, which are lean in eutectic elements, cause negative macrosegregation of the cast ingot. The process includes the step of weakening the magnitude of the flow currents within the liquid pool by placing a mechanical damper therein. The mechanical damper reduces shear acting on the dendrites and minimizes detachment and transport of dendrite particles to the center of the solidified body.

Abstract: An aluminum alloy consisting essentially of about the following percentages of materials:Si=14 to 18Fe=0.4 to 2Cu=4 to 6Mg=up to 1Ni=4.5 to 10P=0.001 to 0.1 (recovered)remainder grain refiner, Al and incidental impurities.