Abstract:
A system for measuring the hardness of cartridge cases employs an eddy current probe for inducing and sensing eddy currents in each cartridge case. A first component of the sensed signal is utilized in a closed loop system for accurately positioning the probe relative to the cartridge case both in the lift off direction and in the tangential direction, and a second component of the sensed signal is employed as a measure of the hardness. The positioning and measurement are carried out under closed loop microprocessor control facilitating hardness testing on a production line basis.
Abstract:
A radioluminescent light source comprises a solid mixture of a phosphorescent substance and a tritiated polymer. The solid mixture forms a solid mass having length, width, and thickness dimensions, and is capable of self-support. In one aspect of the invention, the phosphorescent substance comprises solid phosphor particles supported or surrounded within a solid matrix by a tritium containing polymer. In another aspect of the invention, improved polymers having tritium substituted about cyclic monomers are disclosed. Methods for producing a polymer which contains tritium substituted about monomers containing at least one aromatic ring are also disclosed.
Abstract:
A protective film is created about the anode within a cryolite-based electrolyte during electrolytic production of aluminum from alumina. The film functions to minimize corrosion of the anode by the cryolitic electrolyte and thereby extend the life of the anode. Various operating parameters of the electrolytic process are controlled to maintain the protective film about the anode in a protective state throughout the electrolytic temperature, electrolyte ratio, current density, and Al2O3 concentration. An apparatus is also disclosed to enable identification of the onset of anode corrosion due to disruption of the film to provide real time information regarding the state of the film.
Abstract:
Cermet electrode compositions and methods for making are disclosed which comprise NiO-NiFe2O4-Cu-Ni. Addition of an effective amount of a metallic catalyst-reactant to a composition of a nickel/iron/oxide, NiO, copper, and nickel produces a stable electrode having significantly increased electrical conductivity. The metallic catalyst functions to disperse the copper and nickel as an alloy continuously throughout the oxide phase of the cermet to render the electrode composition more highly electrically conductive than were the third metal not present in the base composition. The third metal is preferably added to the base composition as elemental metal and includes aluminum, magnesium, sodium and gallium. The elemental metal is converted to a metal oxide during the sintering process.
Abstract:
The device comprises two electrical conductors (1, 2) which extend perpendicullar to the direction of movement of a sheet (3) near the free end of the sheet, which can be unrolled and rolled up on a substrate (5). Permanent magnets (4, 5, 6, 7) are arranged on either side of the substrate (S) near its two longitudinal edges. These magnets produce magnetic fields perpendicular to the plane of the substrate (S) such that, when a current passes in one or other direction through the conductors, forces are exerted on them in the direction of the double arrow (F) and develop torques which cause the sheet (3) to roll or unroll. The device can be used as a shutter for a camera lens by fixing a rolled sheet along the two opposite edges of the substrate (S).
Abstract:
A system (10) and method for analyzing molecular constituents of a composition sample (35) includes: forming a solution of the sample, separating the solution by capillary electrophoresis into an eluent of constituents longitudinally separated according to their relative electrophoretic mobilities, electrospraying the eluent to form a charged spray in which the molecular constituents have a temporal distribution; and detecting or collecting the separated constituents in accordance with the temporal distribution in the spray (64). A first high voltage (e.g., 5-100 KVDC) is applied to the solution. The spray is charged by applying a second voltage (e.g., +/-2-8KVDC) between the element at the capillary exit (40) and a cathode (26) spaced in front of the exit. A complete electrical circuit (16B) is formed by a conductor (42) which directly contacts the eluent at the capillary exit or by conduction through a sheath electrode flow about the capillary exit.
Abstract:
The optical fibre to be protected is dipped into a bath of molten metal (10) which solidifies on contact with the fibre and forms the desired sleeve. The fibre (13) passes through dies (9, 11) immersed into the bath and of which the spacing is adjustable so as to vary the distance (G) along which the fibre is in contact with the molten metal and, consequently, the thickness of the sleeve.
Abstract:
Non-creamed honey mousse comprised of a dispersion of air microbubbles in honey containing in addition a stabilizer and a foaming agent. Its density is 0.7 or less. It is soft but does not flow.
Abstract:
Derivatives of polyaspartic and/or polyglutamic acids of which the side chains comprise COOH groups capable of forming cyclic anhydrides. Said polyacids and anhydrides are useable for the production of medicaments.
Abstract:
In the 70 KDa hsp promoter, modifications brought about to the 5' and 3' non-translated sequences, including the insertion or deletion of nucleotides and the number of heat shock consensus sequence elements present in the proximal region of a heat shock gene promoter critically influences promoter activity. Sequence variants in translation initiation and 3'-non-translated regions have been shown to improve levels of induced protein production. Mutant promoters were constructed that have higher maximal activities than the natural parent promoter in heat-shocked cells. These mutant promoters are also expressed at high levels at a temperature below that required for optimal induction of the natural heat-shock genes. These results are of practical interest for attempts to use heat-shock promoters for the inducible production of eukaryotic proteins of medical or industrial importance.