Abstract: A method for determining a cell crossing number of a shadowline between illuminated and dark regions of a linear scanned array of photosensitive cells, and an automatic refractometer using the method, are disclosed. The array is scanned to extract a response signal from each of the photosensitive cells, and the response signals are converted from are converted from analog form to digital pixels, thus yielding a set of data points that collectively represent an illumination distribution curve over the array. A range of cells within which the shadowline resides is established by analyzing the illumination curve data. The second derivative of the illumination distribution curve over the established range of cells is calculated and the greatest positive area bounded by the second derivative is identified. The centroid of the greatest positive area is found and its cell number coordinate is deemed the cell crossing number of the shadowline.

Abstract: A laser scanning microscope, preferably a confocal laser scanning microscope, and a method for reference correction for a laser scanning microscope, in particular for a confocal laser scanning microscope, having an illumination beam path extending between a laser light source and a specimen, and a detection beam path extending between the specimen and a detection device, is characterized, for error correction with at least one reference beam path used for reference measurement, in that reference light can be coupled out of the illumination beam path into the reference beam path, and that the reference light is qualitatively and/or quantitatively detectable by a detection device.

Abstract: The invention refers to a novel ceiling mount having two vertical supports which effect decoupling of the vibration behavior of a microscope mount and an auxiliary mount, the auxiliary mount receiving an equipment box which contains a computer, a control system, and/or an energy source. The invention further concerns a novel interface for mounts having a damping element, and an adjusting apparatus for correcting the position of an action circle plane of a microscope.

Abstract: A combination shipping label and packing slip/label form which comprises a first ply having a top surface and a bottom surface, and a second release liner ply detachably secured to the bottom surface of the first ply. The first ply comprises a detachable shipping label and a corresponding packing slip. The packing slip is detachably secured to the combination shipping label and packing slip form by a substantial die cut through the first ply and the second release liner ply. The packing slip comprises a border section and a bill of materials section separated by a perforation that perforates the first ply and the second release liner ply. The bottom surface of the border section is coated with an adhesive.

Abstract: The invention broadly comprises a multi-ply integrated label form including a first ply having an upper side and an underside and having a first die cut window and a second die cut window, and also having an integral marginal feed strip along a first edge of the first ply and a detachably secured marginal feed strip along a second edge of the first ply, where the first edge and second edge are parallel to one another; a second ply having a label portion, a card stock portion adjacent to and detachably secured to the label portion, a marginal strip portion adjacent to and detachably secured to the card stock portion, and a marginal feed strip portion adjacent to and detachably secured to the marginal strip portion, each of the label portion, card stock portion, marginal strip portion, and marginal feed strip portion having an upper side and an underside, the underside of the label portion and of the marginal strip portion being coated with an adhesive, wherein the first ply is removably secured to the second p

Abstract: A method of deflowering a sweet gum tree by injecting a solution containing indolebutyric acid into vascular tissue of the tree is disclosed for preventing undesirable seed and fruit debris.

Abstract: A hand-held non contact tonometer includes a piston having a transparent plane parallel window normal to a measurement axis of the tonometer along which the piston travels to discharge a fluid pulse without interfering with optical alignment functions of the instrument. In a first embodiment intended for home use by a patient, an alignment guidance system utilizing a concave mirror and a target source in a plane containing the center of curvature of the concave mirror present an alignment image to the patient for guiding self-alignment. An infra-red light source at the focal point of the concave mirror irradiates the concave mirror so that a collimated beam is reflected along the measurement axis and focused by an objective lens.

Abstract: An adjustable punch assembly is provided for use at an indexable punching station in a turret punch press. The overall length of the punch assembly may be adjusted using a motor and pulley system that is also used for indexing the punch tool. Further, the punch assembly includes a quick disconnect connection between the punch driver and the punch tip that facilitates the changing of the punch tip.

Abstract: A silencer assembly having a cylindrical chamber having a closed cylindrical outer wall, a first end wall and a second end wall, the first end wall having an inlet therein, and the second end wall having an outlet therein, an internal annular chamber proximate the cylindrical outer wall, the internal annular chamber bounded by the cylindrical outer wall and by a perforated cylindrical inner wall, the internal annular chamber containing single strand fiberglass acoustic fill material, the internal annular chamber having no internal barriers therein, and, a perforated generally cylindrically shaped core located inside of the cylindrical chamber positioned in spaced relation to the internal annular chamber and also in spaced relation to the inlet and outlet, creating a generally annular shaped passageway for exhaust gas, the core containing single strand fiberglass acoustic fill material.

Abstract: An improved yo-yo, having a first yo having a first inwardly facing surface; a second yo having a second inwardly facing surface, the second yo arranged in spaced apart relation to the first yo, where the first and second inwardly facing surfaces face one another; an axle secured to and arranged between the first yo and the second yo, where the first and second yos are arranged for rotation about an imaginary axis coincident with the axle; and, a first fibrous pad secured to the first inwardly facing surface.

Abstract: Disclosed is a bioreactor apparatus having a bed of buoyant media pellets floating within a filtrate to be processed. The apparatus includes a tank having a peripheral wall for containing filtrate and a bed of media pellets. A central manifold is rotatably supported within the tank the central manifold being mounted for rotation about a vertical axis and having a plurality of longitudinally spaced openings intermediate its ends, the openings adapted to eject filtrate in a generally horizontal direction and along a substantially vertical plane toward the wall of the tank. A thrust manifold, generally parallel to the axis of the central manifold has a plurality of longitudinally spaced openings intermediate its ends directed horizontally and generally perpendicularly to the plane. The thrust manifold is supported in association with the central manifold inwardly adjacent the tank wall and offset rearwardly of the plane to rotate with the central manifold.

Abstract: A zero input current charge sensitive preamplifier comprised of a feedback means and, optionally, a charge cancellation means whereby the feedback means is comprised of a feedback loop having a feedback capacitor and a composite operational amplifier having a non-inverting input and being comprised of a common drain differential amplifier, having at least one junction field effect transistor which is coupled with a monolithic operational amplifier; and wherein the charge cancellation means is comprised of an integrator placed in the feedback loop at the non-inverting input of the composite operational amplifier.

Abstract: An anti-frost concrete mold having an upper frustoconical portion, a transitional shoulder portion and a lower drum portion. The top portion of the mold is adjustable in height. The mold is fabricated simply by molding it over a die. The mold is fabricated from various suitable recycled materials bound with a binding agent.

Abstract: A device for fine positioning of a component (1), especially for vertical fine positioning of an objective or revolving objective nosepiece (1) of a microscope, with a lever system (3) and a drive (4) for the lever system, is characterized in that the lever system (3) acts directly on a rotating part (5); that the component (1) is flexibly connected to the rotating part (5); and that the connection (6) acts such that rotation of the rotating part (5) changes the position of component (1) by unrolling the flexible connection (6) on the rotating part (5), thus causing a lifting movement of the component (1).

Abstract: The invention concerns a stand, in particular a microscope stand, having a multiple-part stand foot. The stand foot includes a removable stand foot body having cavities configured for enclosing and precisely positioning weights such that the weights can be installed without turning the stand foot over. A method for assembling such a stand is also described.

Abstract: A method and apparatus for frequency stabilization of cavity filters of the class including an outer tubular conductor and an inner conductor is effected by supporting the inner conductor of the resonant cavity by an apparatus comprised of a reference collar and an interface collar connected together by a means having a first coefficient of thermal expansion. The reference collar is structurally connected to the reference end of the outer tubular conductor by adjustable tuning means. It is not connected directly to the inner conductor. The inner conductor is structurally connected to the interface collar by a means having a second coefficient of thermal expansion. The first coefficient of thermal expansion and the second coefficient of thermal expansion are selected to provide compensation for the difference in thermal expansion between the outer conductor and the inner conductor of the cavity filter.

Abstract: The invention concerns an optical arrangement disposed in the beam path of a microscope, in particular a confocal scanning microscope, an illuminating pinhole diaphragm (6) and a detection pinhole diaphragm (7) being disposed in the illuminating beam path (1) between the light source (2) and object (3) and in the detection beam path (4) between the detector (5) and the object (3), respectively. In order to be able to carry out continuous depth discrimination and adapt itself optimally to lenses, wavelengths and efficiency, the optical arrangement is designed and developed such that a verifocal lens system (8) for varying the optically effective pinhole diaphragm diameter is provided at least between one of the pinhole diaphragms (6, 7) and the object (3).

Abstract: An adjustable punch assembly includes a releasable locking means for selectively allowing relative rotation between a threadably mated punch cap and punch driver for punch length adjustment. The releasable locking means includes a locking element, preferably a ball bearing, residing in a passage extending in a radial direction in the punch cap to open opposite a splined index portion of the punch driver. The splined index portion includes a plurality of angularly spaced grooves each extending in an axial direction of the punch driver, whereby a corresponding groove opposite the passage is engaged by the locking element. A plunger in its locked position confines the locking element in locking engagement with the punch cap and punch driver, and is movable to an unlocked position wherein the locking element is no longer confined in locking engagement to permit punch length adjustment.