Abstract: A compact, efficient reactor for the photocatalyzed conversion of contaminants in a fluid stream. The reactor includes a photocatalyst disposed on a support structure with a light source in optical proximity to the support structure to activate the photocatalyst. In one embodiment of the invention, the support structure includes multiple non-intersecting fins oriented parallel to the general flow direction of the fluid stream to provide a reactor with low pressure drop and adequate mass transfer of the contaminant to the photocatalyst disposed on the surface of the fins. The light source includes one or more lamps that may penetrate the fins to provide efficient illumination of the photocatalyst. The fins may be flat or pleated. In an alternative embodiment, the fins are pleated and composed of a porous material. These fins are oriented so that the fluid stream flows through the fins.

Abstract: An electrochemical biosensor able to measure hydrogen peroxide which is stable at temperatures near 37.degree. C. or in excess of 37.degree. C. for sustained periods of time and in biological environments. The electrochemical biosensor contains a thermostable peroxidase, preferably derived from soybean, and is useful in analytical biosensors.

Abstract: A method of transporting an article through a processing housing while minimizing the loss of a controlled atmosphere from the process housing. This method includes the steps of placing an article on a first carriage member, then vertically displacing the article from the entry level through an entry opening of entry housing to a processing level. The article is then transferred from the first carriage member to an endless conveyor for transporting, horizontally, through the process housing. The article is then transferred to a second carriage member which moves the article vertically through a exit housing to and through an exit opening near an exit level. The processed article is then removed at the exit level. The vertical distance between the process level and the entry opening and the exit opening separates the controlled atmosphere from the ambient atmosphere exterior of the housings.

Abstract: A method for minimizing the clogging of a cooling zone heat exchanger of a reflow solder apparatus that includes the steps of: removing a gas/flux mixture from an exhaust zone (20) that is located adjacent a heated zone and/or a cooling zone; conducting the gas/flux mixture to and through a first filter chamber (22), conducting the filtered gas from the filter chamber (22) through a low pressure portion of a blower housing of a cooling zone (16), then subsequently to and through a high pressure portion (44) of the cooling zone that includes a collection tray (38), a mesh filter (48), a heat exchanger (46) and at least one perforated plate (50). The heat exchanger is thermostatically controlled at a preset tempering temperature that minimizes the collection of flux on its exterior surfaces while allowing a solder joint of an article to solidify.

Abstract: A photocatalyst composition containing a substantially non-oxidizable binder which allows large amounts of photocatalytic particles to be adhered to a surface. Upon application to a surface, the composition dries or cures to form an adherent, abrasion-resistant, thermostable, and photocatalytic coating.

Abstract: A rotary induction machine having wound primary and secondary windings with capacitive means connected directly across said secondary windings and resistive means connected in series with said secondary windings.

Abstract: A rotary induction generator having a stator with stator windings defining a three-phase stator and a rotor mounted for rotation therein, and having wound thereon three rotor windings defining a three-phase rotor and having resistive-reactive means connected to said secondary windings to increase the efficiency of said generator and limit the power output to the capacity of the generator over a wide range of speeds.

Abstract: The open edge of a plasticboard is moved into a heating and sealing unit having a metal form with a U-shaped cross-section. A spacing tape and a release tape line the metal form. An induction or resistance heater is coupled to the metal form to raise the temperature thereof and heat the open edge to form a molten plastic edge wall, with the outer edges of the edge wall in sealing engagement with the form. The molten plastic fills the cavity between the form and the edge wall and forms a solid, continuous end wall upon cooling of the molten plastic. A batch sealing unit has a form moved directly into engagement with the edge wall to be sealed. A continuous sealing unit has an elongated form. A conveyor moves the plasticboard through the form in a continuous flow path with the form inclined to the path of the edge board to establish relative lateral movement. A cooling unit cools the end wall as the board moves from the form.

Abstract: A method for machining a rotation-symmetrical workpiece surface includes the steps of rotating the workpiece during machining, roughing the workpiece surface, smoothing in a longitudinal turning process the workpiece surface with a cutting tool having a cutting blade with a divided edge arrangement, advancing the cutting tool in a radial direction relative to the workpiece surface in the smoothing step, and moving the cutting tool in the axial direction of the workpiece surface for carrying out the longitudinal turning process. The cutting tool for carrying out the aforementioned method comprises at least one first cutting blade for the smoothing step, the first cutting blade having at least two adjacent edges axially spaced at a distance from one another.

Abstract: Interferant eliminating analyte sensors and sensing process prevent erroneous assays. Glucose electrodes were coated with an oxidizing enzyme (peroxidase) which allows hydrogen peroxide to selectively oxidize ascorbate, urate, bilirubin, and acetaminophenol in the presence of glucose. Hydrogen peroxide may be added to the assayed solution or generated in situ. The oxidizing enzyme was prevented from causing undesired reduction currents at the glucose electrode by preventing contact of the oxidizing enzyme with the glucose electrode, or by increasing the applied voltage.

Abstract: A method for machining surfaces of revolution at workpieces comprises the eps of: rotating the workpiece during machining; roughing the workpiece with a disk-shaped tool having at its circumferential edge cutting elements with cutting edges; and, for finishing the workpiece, plunge-cutting by turning the workpiece with the disk-shaped tool, wherein the step of plunge-cutting by turning is divided into a sequence of individual plunge-cutting by turning steps so that material of overlapping portions of the workpiece is removed sequentially. The tool comprises a disk-shaped base body with a circumferential edge and a first set and a second set of cutting elements that are connected to and distributed over the circumferential edge of the disk-shaped base body. The first set is used in the roughing process, and the second set is used in the finishing process by plunge-cutting by turning.

Abstract: An amperometric biosensor and method for the detection of hydrogen peroxide, NADH, or NADPH with high sensitivity includes an electrode having on its testing surface a three-dimensional redox polymer network in which peroxidase is immobilized.

Abstract: A center drive support for supporting a crankshaft during machining in a machining device comprises a rotatably drivable support member and a drive unit. The rotatably drivable support member has a carrier with at least two clamping elements with clamping ends. The clamping elements are displaceable between a clamping position and a release position for the crankshaft. The clamping elements clamp the crankshaft between their clamping ends. The drive unit is connected to the clamping elements for applying a required clamping force in the clamping position during rotation of the support member. The drive unit includes a clamping motor and a drive shaft connected to the clamping motor. It further includes a gear unit connected between the drive shaft and the carrier. The gear unit, during machining of the crankshaft in the clamping position, follows the rotation of the support member against the toque of the clamping motor.

Abstract: Enzyme electrodes having a surface coated with a film. The film is formed from materials in which a redox enzyme is covalently bonded to a three dimensional molecular structure. The molecular structure is of the class having multiple redox centers, for example, a crosslinked redox polymer.

Abstract: A biosensor including an interferant-eliminating catalyst and method for analyzing an analyte in a biological sample is disclosed.

Abstract: A clamping device for individual tools has a spindle and a pulling member nnected inside the spindle. The pulling member has a conical clamping and centering element projection from the spindle. A tool holder has an end face with a recess, the recess having at least one conical mantle surface. The conical mantle surface cooperates with the conical clamping and centering element for clamping and centering the tool holder at the spindle.

Abstract: During machining of workpieces, particularly crankshafts, in a central ren of the workpiece, both tips at opposite unmachined ends are axially retracted from the workpiece; both machined ends of the workpiece are clamped centered with the radial clamping members. During the machining of one workpiece end, the workpiece is clamped equalized at the oppositely located end and during the machining of the central region is clamped centered at this end. A workpiece after end machining and before machining of the central region is relieved for elimination of existing axial tensile-strength pressure stresses. Before the machining of the central region there is applied an axial tensile-strength stress upon the workpiece. Apparatus for carrying-out the method includes two oppositely located main spindles and chucks, which have radially and axially adjustable clamping elements and having two oppositely located centering tips, which are adjustable axially relative to the clamping elements respectively the chucks.

Abstract: A method of bonding areas of two elements of a sheet molded compound to form a bonded product includes intimate mixing of a thermoset epoxy or polyurethane adhesive with submicron particles selected from the group of gamma Fe.sub.2 O.sub.3 and magnetic iron oxide Fe.sub.3 O.sub.4, with the particles typically being 5 to 40% by weight of the final adhesive mixture to form a semi-liquid adhesive mixture. A bead of the adhesive mixture is located between the elements to be joined, and the elements are forced toward each other to compress and spread the semi-liquid adhesive mixture to form a flattened bonding element in intimate contact with the surfaces to be joined with an accurately controlled typical thickness of the adhesive of 0.005 inches to 0.2 inches. An induction coil is coupled to the elements and energized with a high frequency current of a frequency of from 1.5 to 8 MHz for a total period of about thirty seconds.

Abstract: An integrated multiple particle heating agent is provided for heating, particularly using the agent for heating and bonding plastic substrates. The integrated multiple particle heating agent includes significant portions of non-conductive ferromagnetic oxide particles which generate heat because of hysteresis losses and of conductive ferrous particles which generate heat because of eddy current losses. The dual particles are thoroughly intermixed and respond to a magentic field of an appropriate RF frequency. The ferromagnetic particles are submicron size and the ferrous particles are micron size. The particles are combined with an inert resin carrier and applied as a coating, directly incorporated within the substrate, or as a separate element. The ferromagnetic oxide loading is generally less than the ferrous particle loading, with a range of 30 to 60 percent (40 to 50 preferred) by weight of ferrous particles and a range of 10 to 50 percent (15-25 preferred) by weight of the oxide particles.