Abstract: A dental reamer having one or more cutting sections and one or more spiral grooves. The dental reamer has at least one cutting edge having a cutting point, characterized in that a tangent to the cutting point tends to superimpose itself on a tangent to a diameter of a circle in which the cutting sections are inscribed, wherein the diameter passes through the cutting point. The invention provides a reaming cut that, in a surprising manner, reduces or even eliminates the spiral displacement (i.e., uncontrolled advancement of the reamer) that results from rotation of the prior-art reamers, while still maintaining an excellent reaming efficacy.

Abstract: A novel pleated fibrous structure is disclosed, which fibrous structure comprises a layer of a pleated split fiber film. The layer of split fiber film may be electrostatically charged. The pleated split fiber film may be part of a composite fibrous structure further comprising a support of a nonwoven or scrim.

Abstract: Process and apparatus for conveying flowing substances with the aid of an electrochemical gas evolution cell whose cell current generates primarily a gas volume flow which secondarily causes the volume flow of a decomposer liquid into a catalytic decomposer and which thereby initiates a quantity flow of the decomposer gas which transports the flowable conveyed medium to the intended location.

Abstract: A method for the detection of nucleic acid sequence variants is disclosed which method comprises the stabilization of a portion of the sequence by a covalent bond with a photoactivatable intercalating agent and compositions.

Abstract: For the purpose of rigid connection of the cutter holder (9) to the tool carrier (5), the tool carrier (5) has a driving key (11) on its end side, which driving key is inserted into a corresponding transverse groove (13). The driving key (11) has a specified excess size compared to the transverse groove (13), such that when a setscrew (10) is tightened the tool carrier (5) and the cutter holder (9) are elastically deformed. Laterally next to the transverse groove (13) the surface of the cutter holder (9) is supported on the tool carrier (5).

Abstract: Known thermal spray apparatus are modified to achieve thermal spray coatings of increased hardness. Thermal spray apparatus operate to develop a plasma stream for introduction to a nozzle, for eventual application to the surface of a substrate. Upon entering the nozzle, the plasma stream is passed through a plasma cooling zone defined by a plasma cooling passageway, to a plasma accelerating zone defined by a narrowed passageway that expands into a plasma/particle confining zone for the discharge of material from the apparatus. The narrowed passageway of the apparatus is cooled, and the powder material to be applied by the apparatus is introduced into the plasma stream along the cooled, narrowed passageway.

Abstract: In the recycling of used nickel/metal hydride storage batteries, the battery scrap is dissolved in sulphuric acid after mechanical separation of the coarse constituents by magnetic and air separation. A solvent extraction is performed with the digestion solution, from which the rare earths (from the hydrogen-storage alloys in the negative electrodes) and iron and aluminum have been selected by precipitation, under conditions pH, choice of solvent, volumetric ratio of the phases) which are such that the aqueous phase contains nickel and cobalt in the same atomic ratio as that in which they were present in the scrap. This makes possible a joint recovery by simultaneous electrolysis, in which process the deposition product forms a master alloy which can be used, together with the precipitated rare earths which have been electrometallurgically reprocessed as misch metal, for the production of fresh hydrogen-storage alloys.

Abstract: A transgenic animal, the genome of which comprises a transgene for superoxide dismutase (SOD), erythrocyte-glutathione peroxidase (GPE), or plasma-glutathione peroxidase (GPP), is disclosed. A double transgenic animal comprising the transgenes for both SOD and GPE is also disclosed. Methods for making the transgenic animals are disclosed. Both the SOD gene and the two GP genes code for proteins which control the level of reactive oxidative species (ROS) which accumulate in cells as a result of metabolism. Cell lines from both SOD and GP transgenic animals and methods for use of the transgenic animals as models are also disclosed.

Abstract: Materials, for example, plant-based food products, are subjected to heat and pressure in a processing enclosure, wherein the pressure is greater than the pressure of the atmosphere. The heated, pressurized materials are then subjected to a pressure-reduction phase during which the pressure in the processing enclosure is reduced at a rate greater than 500 millibars per second and by an amplitude greater than 1 bar. The rapid pressure-reduction phase of the invention contributes to the production of processed materials having a slightly spongy structure that is due to the presence of micro-cavities that promote the recapture of subsequent moisture.

Abstract: Eucaryotic cells like mammal and plant cells transfected with genes, called retrons, which code for stable single-stranded hybrid molecules (msDNA) containing RNA and DNA portions are disclosed. The retrons producing said linked RNA and DNA portions of the msDNAs also contain a gene encoding a reverse transcriptase (RT), which is necessary for the synthesis of the msDNAs. The msDNAs may contain foreign nucleic acid fragments which may be antisense fragments. These msDNA antisense vectors are useful for targeting genes of target proteins.

Abstract: A mechanical grinding apparatus of the present invention, which includes a rotor supported by a rotary shaft and having a plurality of grooves defined on the outer peripheral surface thereof and a liner inserted to the outside of the rotor so as to form a desired gap between the liner and the rotor and having a plurality of grooves defined on the inner peripheral surface thereof for grinding a substance to be ground in the gap, is characterized in that the grooves of at least one of the rotor and the liner incline in a direction preventing the flow of the substance to be ground with respect to a direction parallel with a rotary shaft. Since the mechanical grinding apparatus of the present invention can make a ground substance having a small particle size, no large particles mixed therein and a sharp particle size distribution width at a high efficiency, the grinding apparatus is preferably applicable to powder composed of resin or mainly composed of resin to be finely ground.

Abstract: The process for producing coated particles of the present invention is applicable to a process of producing coated particles by charging powder of core particles into the coating space and permitting a coat forming substance generated via a vapor phase or being in a vapor-phase state to contact against particles of the powder, and the process is characterized by dispersing powder of core particles having an average particle diameter of not more than 10 .mu.m and a particle size distribution of ((D.sub.M /5, 5D.sub.M), .gtoreq.90%) to adjust a dispersity .beta. to at least 70%, and contacting the dispersed powder of the core particles with the coat forming substance.

Abstract: The invention relates to pyran-chromenone compounds, their synthesis and anti-HIV activity. Methods of synthesis are disclosed; the compounds have activity against reverse transcriptase. Biological compositions containing the compounds and method of treating patients are also disclosed.

Abstract: The invention relates to a process for the manufacture of a nonwoven web using filaments of melted polymers, of the type including the steps of spinning the polymer or polymers, of cooling, drawing and laying down fibers on a belt and of bonding said fibers by calendering in order to form said nonwoven web (15), which process furthermore includes a treatment (13, 14) of setting/adjusting the degree of crystallinity of and the internal tension in the fibers making up the nonwoven web. The invention also relates to the nonwovens obtained by the process and to the installations for implementing it.

Abstract: The present invention relates to a procedure for counting faintly luminescent particles, and relates specifically to a procedure for counting cells and microorganisms marked with a colored or fluorescent stain or marker that selectively marks the microorganisms and cells to be counted, characterized by the fact that the said procedure is implemented with the aid of a photon-accumulator camera and includes the acquisition of at least one low-resolution image I, the threshold processing of the said low-resolution image in order to obtain at least one digital image Ib, at least one dimensional filtration stage, and the counting of the number N of objects belonging to a given class of sizes in the digital image Ib.

Abstract: The invention relates to an instrument for periodontal treatment, consisting of a connection piece (4) and of a blade (1), wherein said blade (1) has an abrasive part exhibiting two sectors (10, 11) distributed along the blade, and each situated on opposite sides of a plane passing through the axis of the blade, these two sectors (10, 11) exhibiting different levels of abrasiveness such that when the instrument is introduced into the periodontal pocket during treatment, the more abrasive sector comes into contact with the root surface of the tooth, and the other, less abrasive, sector comes into contact with the mucosa, said instrument being adapted to be held by way of its connection piece (4) on a handpiece which confers a vibratory movement on it, allowing the two sectors (10, 11) to effect the detachment of the undesirable tartar.

Abstract: A device for conducting monetary transactions with smart cards such as blank cards comprises a housing (120), a coupler (121) for smart cards, a slot (121a) located at the coupler for partial insertion of a smart card, a keypad (122) for the input of at least one confidential code associated with the card inserted into the coupler, and a process for validating the transaction. The slot is adjacent to an edge of the keypad, and the coupler and the slot are positioned so that a portion of the card remaining outside of the housing after partial insertion extends at least partially above the keypad, forming a screen during input of the code to protect confidentiality.

Abstract: Method for the production of an optically variable image including an animated element used as the model for the reproduction of a security element, by insolation of a light-sensitive material through two coherent light beams. The image is broken down into a plurality of elementary images, each corresponding to an optical effect defined by a color, the time when the image elements appear and their duration. A plurality of masks is provided, each including a number of windows defining an elementary image. Two light beams are used to light the entire substrate surface and the substrate is isolated by successively placing each mask on the substrate and in the path of the light beams. The first light beam is stationary while the second light beam is emitted from an illumination surface with adjustable dimensions and position, so as to produce a given optical effect for each elementary image.

Abstract: Optical designating device, especially for use in microsurgery, comprising a tool-carrier stage (2) integral with the optical instrument (1), supporting at least one light source (4, 5) for emitting a light beam (6, 7), said light source (4, 5) being offset in relation to the optical axis (10) of the optical instrument (1). The orientation of the light source (4, 5) in relation to the optical axis (10 ) of the microscope is determined in order to aim the light beam (6, 7) at a target point (15).

Abstract: A fastener, adapted to attach a cord or a chain to a sidepiece of a pair of eyeglasses, has a cylindrical tightening ring and an elastic loop having a cross section with a flat side and a curved side. The inner diameter of the tightening ring is smaller than the length of the flat side of the cross section of the elastic loop. When the elastic loop is passed through the tightening ring, the flat sides of two cross sections of the elastic loop face each other and the curved sides of the two cross sections face the inner surface of the tightening ring to secure the tightening ring to the elastic loop. When the fastener is attached to the sidepiece, the flat side of the cross section of the elastic loop faces the sidepiece to secure the elastic loop to the sidepiece.