Abstract: The invention provides a three layered reprographic paper having improved strength, stiffness and curl resistance properties, and a method for making same. The paper has a central core layer made largely of cellulose and bulked with a bulking agent such as a diamide salt. A starch-based metered size press coating is pressed on both sides of the core layer, wherein the starch has a high solid content. The coating forms a three layered paper having an I-beam arrangement with high strength outer layers surrounding a low density core.

Abstract: The invention provides a three layered reprographic paper having improved strength, stiffness and curl resistance properties, and a method for making same. The paper has a central core layer made largely of cellulose and bulked with a bulking agent such as a diamide salt. A starch-based metered size press coating is pressed on both sides of the core layer, wherein the starch has a high solid content. The coating forms a three layered paper having an I-beam arrangement with high strength outer layers surrounding a low density core.

Abstract: The invention provides a three layered reprographic paper having improved strength, stiffness and curl resistance properties, and a method for making same. The paper has a central core layer made largely of cellulose and bulked with a bulking agent such as a diamide salt. A starch-based metered size press coating is pressed on both sides of the core layer, wherein the starch has a high solid content. The coating forms a three layered paper having an I-beam arrangement with high strength outer layers surrounding a low density core.

Abstract: The invention provides a three layered reprographic paper having improved strength, stiffness and curl resistance properties, and a method for making same. The paper has a central core layer made largely of cellulose and bulked with a bulking agent such as a diamide salt. A starch-based metered size press coating is pressed on both sides of the core layer, wherein the starch has a high solid content. The coating forms a three layered paper having an I-beam arrangement with high strength outer layers surrounding a low density core.

Abstract: A substrate comprising a paper layer and at least one biodegradable polymer layer extruded thereon is provided. The paper layer may have an extruded polymer layer on each side, it may have multiple polymer layers extruded on one side, or both. Additives appropriate for the particular use of the substrate may be added to one or more of the polymer layers.

Abstract: A substrate comprising a paper layer and at least one biodegradable polymer layer extruded thereon is provided. The paper layer may have an extruded polymer layer on each side, it may have multiple polymer layers extruded on one side, or both. Additives appropriate for the particular use of the substrate may be added to one or more of the polymer layers.

Abstract: An improved disposable single-hand controlled aspirating device for medical aspirating activities most particularly fine needle biopsy procedures. The aspirating device includes a syringe barrel, a plunger operative in the barrel, and a finger grip assembly that is mounted to the syringe barrel and plunger for controlling plunger movement within the barrel. The finger grip assembly includes a body member and a trigger member slidably engaged within the body member. More specifically, the finger grip assembly resembles a pistol-like handle and trigger arrangement that enables a user of the device to control plunger movement in the syringe barrel with a single hand.

Abstract: A disposable, single-hand controlled aspirating device for medical aspirating activities such as subcutaneous biopsy of fluid, soft tissue and bone marrow is provided. The aspirating device includes a syringe barrel, a plunger operative in the barrel, a finger grip member surrounding the exterior wall of the barrel that includes a collar portion engaging the exterior wall of the barrel and flange portions extending outwardly from the exterior wall of the barrel a distance sufficient to provide support for a user's fingers during aspiration procedures, and a spring surrounding the plunger portion external to the barrel for biasing the plunger outwardly from the barrel after the plunger has been advanced in the barrel toward the distal end thereof.

Abstract: An improved disposable biopsy needle unit (12) includes a metal cannula (16), a molded plastic T-shaped handle (18), and a removable stylet (20). A solid hub portion (28) of the handle (18) is formed around a lateral tab (30) near the proximal end of the cannula (16) for reinforcement. A hollow fitting (32) extends between the proximal end of the cannula (16) and a recess between the opposite wing portions (26) of the handle (18). Locking ears (48) are preferably provided on the fitting (32) for releasable attachment to an aspiration device, such as a syringe (14). The stylet (20) includes a solid needle (34) with a turned proximal end within a molded plastic cap (38) for reinforcement. A lug (44) and slot (46) are provided on the stylet (20) and handle (18), respectively, for properly locating the stylet when inserted into the cannula (16). A second embodiment (80) incorporates an upset, non-circular boss (82) on the fitting (32') instead of a tab (30) on the cannula (16') for internal reinforcement.

Abstract: A bone marrow biopsy and aspiration needle unit is disclosed. The unit includes a holding device, with a longitudinal bore therethrough, comprising a collect chuck and handle grips, a replaceable cannula to be interlockably mounted in the holding device, with the cannula's lumen in alignment with the longitudinal bore, and an elongated stylet releaseably mounted in the aligned bores. When the needle unit is also to be used for aspiration, a second cannula of a diameter less than the first cannula is inserted through the aligned bores in the holding device and the first cannula.

Abstract: An arrangement for sampling a liquid by a closed procedure which includes penetrating the closure (34) of a container (33) of liquid by a needle (62) having a bore (68), a solid point (63), and a radial passage (66) near the point of communication with the bore, the needle including a space (67) extending coaxially therein in addition to the bore, and outward apertures (70) and (71) communicating with the space and positioned so that when the needle penetrates the closure into the container for a predetermined distance, one of the apertures is within the container and another of the apertures is outside the container.

Abstract: A bone marrow biopsy and aspiration needle unit is disclosed. The unit includes a holding device, with a longitudinal bore therethrough, comprising a collect chuck and handle grips, a replaceable cannula to be interlockably mounted in the holding means, with the cannula's lumen in alignment with the longitudinal bore, and an elongated stylet releaseably mounted in the aligned bores. When the needle unit is also to be used for aspiration, a second cannula of a diameter less than the first cannula is inserted through the aligned bores in the holding device and the first cannula.

Abstract: An apparatus that is capable of continuously measuring the weight loss of a light weight, porous sheet material during drying while in constant contact with a heated surface. The resulting data may be converted to drying rate curves suitable for analyzing the effects on drying rate of furnish additives and processing conditions. The testing device is particularly useful for evaluating grades of paper or paperboard having basis weights greater than 50 g/m.sup.2. The device includes an electrically heated arcuate plate maintained at a constant temperature. The paper sample to be tested is brought into good heat transfer contact with the plate by means of a tensioned fabric that exerts a normal load on the sample but does not interfere with mass transfer of the vapor away from the drying sample. An air ventilating system provides a low turbulence flow of air uniformly over the fabric covering the sample.

Abstract: An improved displacement washing process for recovering processing chemicals from a porous medium, particularly wood pulp, is described. The effective mobility of a displacing solution, typically a more dilute solution of the chemical sought to be recovered, is reduced such that it is less than the mobility of the solution to be recovered. In a pulp mill washing system, consumption of wash water may be reduced 0.6 tons of water per ton of pulp produced without reducing chemical recovery. Conversely, chemical effluent from the washer could be reduced by 50% without increasing wash water requirement. Mobility is proportional to the permeability of the porous medium with respect to the solution of interest and inversely proportional to the viscosity of that solution. Mobility of the wash solution relative to the solution to be displaced is preferrably reduced by the addition of a soluble, high molecular weight polymer, greater than 10.sup.

Abstract: The combination of an automated hematology analyzer (21) with an input device (20) enabling closed transfer of blood to said analyzer to a sealed specimen container having a perforable closure, and the input device itself.