Abstract: Highly ordered mesoporous silica molecular materials are prepared using sodium silicate as a silica source, sulfuric acid and nonionic poly(alkylene oxide) surfactants or nonionic amphiphilic bloc copolymers as structure-directing agents. The mesoporous silica materials obtained have hexagonal and cubic structures, uniform pore size and high surface areas.

Abstract: Highly ordered mesoporous silica molecular materials are prepared using sodium silicate as a silica source, sulfuric acid and nonionic poly(alkylene oxide) surfactants or nonionic amphiphilic bloc copolymers as structure-directing agents. The mesoporous silica materials obtained have hexagonal and cubic structures, uniform pore size and high surface areas.

Abstract: In a method for producing a portable electronic device with an integrated circuit, a resin band is deposited around the chip of an integrated circuit and connection wires. The resin is highly viscous and can be polymerized with U.V. radiation. A low-viscosity filling resin which can be polymerized with U.V. radiation is deposited in the space defined by the resin band, and the protected resins are polymerized by exposure to U.V. radiation. The filling resin contains mechanically reinforcing fibers. The entire process can be carried out in a continuous manner.

Abstract: The redundant regulation valve for controlling fluid flow comprises a valve body defining a passage for the flow of the fluid, a main throttle element movable by means of a main control device to selectively obstruct the passage, and a redundant throttle element movable by means of a redundant control device. When the valve is in its closed position in normal operation, the main element and the redundant element are in contact with each other. In this normal closed position, the main element is close to its fully-extended position in the closure direction and it obstructs only about half of the passage, while the redundant element is in a position of medium extension. The stroke of the redundant element is such that the redundant element can be controlled to obstruct the entire passage even when the main element is in its fully-open position.

Abstract: In order to stabilize solutions of human albumin for therapeutic use for the purpose of their treatment by heat in a container, in particular in the final container, there is added, in addition to the usual stabilizing formula, a surfactant agent selected from among Tween 80, Tween 20, Pluronic F68, laurate of polyethylene glycol 600 or any other equivalent agent.

Abstract: An arrangement for mounting two bearings supporting a shaft within a housing, each bearing having an inner race secured to the shaft and an outer race, the arrangement comprising two annular membrane-shaped spacer members having a high radial stiffness and a predetermined axial flexibility, the spacer members having an outer edge and an inner edge, the inner edge of each spacer member being secured to the outer race of a respective bearing and the outer edge of each spacer member being secured within the housing, both spacer members being subjected to a predetermined amount of axial deformation with respect to their unstressed condition, whereby the spacer members exert a precisely determined axial preload onto said outer races of the bearings.

Abstract: In the large-scale production of rabies vaccine a cell stock comprising a VERO cell strain and a liquid nutritive medium containing serum and microcarriers suspended therein is successively passed into biogenerators of increasing volume. The last of the passages is carried out in a biogenerator having a volume of at least 150 liters. The liquid nutritive medium is drawn off at the end of the final passage and replaced with a serum-free liquid nutritive medium. The cell stock is inoculated in the last passage biogenerator with virus which is allowed to develop. The virus is then cultured, withdrawn and filtered. The filtered liquid suspension is then ultrafiltered, with inactivated beta-propiolactone and purified by zonal centrifugation or chromatography.

Abstract: A disposable contraceptive cervical barrier includes a bowl-shaped thin flexible member and a substantially thicker circular rim unitary with the flexible member. The rim provides a spring tension effect for helping to maintain the barrier in position. A plurality of cavities are formed in the rim and are equidistantly spaced therearound. The cavities are open so as to be capable of receiving and holding a quantity of a spermicide. Alternatively, the flexible member itself can be provided with a plurality of grooves for holding the spermicide. Preferably, the barrier is made from a mixture of a hydrophilic foam polymer and a more conventional polyurethane polyether prepolymer-catalyst system. The mixture is molded in a closed mold having a volume of about ten percent of the volume which the material would occupy if allowed to foam freely. The finished product is similar to an elastomer except that internally it has a dense cellular structure and is bounded by an impermeable skin.

Abstract: The invention relates to a method and devices allowing exchange of data between authorized bearers of crediting means (1) to be identified, approved and possibly coded and to remote centralized processing machines (3) via specific terminal units (2). The data produced by a bearer of a crediting means (1) after connection of said means (1) to a terminal unit (2) and sending of the identity of said means (1) are approved by a logic generation unit (15) of the means (1) from an individualization code and from transaction data. The invention applies to the exchange of data in an insecure environment and more particularly to bank credit card systems.

Abstract: A rotor centering device comprising two radial bearings each one constituted of first and second opposing members with angular contact races, mounted with axial clearance so that if one of the said members is in abutment, the other member has a radial clearance. The first angular contact centering members of the first and second bearings are also opposing, and the second angular contact centering members of the first and second bearings are likewise opposing, so that by relative axial movement of the inner and outer contact races of both first and second centering means belonging to the two bearings, simultaneous contact of the inner and outer faces is achieved either with the first centering members or with the second centering members which happen to be opposing on the two bearings.

Abstract: Disposable contraceptive intravaginal cervical barriers of one, two, three, four, or five layers in the form of standard pessaries with at least one layer impervious to the passage of sperm, with a medicament such as spermicide, germicide, or an abortion inducing agent either impregnated into a foam plastic layer or in the form of a layer of gel or powder, said medicament being activatable upon contact with an aqueous solution.Methods of producing disposable contraceptive barriers either as a wet foam plastic method wherein medicament is added to liquid foam and the resulting mixture is formed in a mold with any subsequent layers then added, or as a dry foam plastic method wherein layers including a layer of medicament in the form of a gel or a powder are superposed in sequence and formed in a die.

Abstract: Disposable contraceptive intravaginal cervical barriers of one, two, three, four, or five layers in the form of standard pessaries with at least one layer impervious to the passage of sperm, with a medicament such as spermicide, germicide, or an abortion inducing agent either impregnated into a foam plastic layer or in the form of a layer of gel or powder, said medicament being activatable upon contact with an aqueous solution.Methods of producing disposable contraceptive barriers either as a wet foam plastic method wherein medicament is added to liquid foam and the resulting mixture is formed in a mold with any subsequent layers then added, or as a dry foam plastic method wherein layers including a layer of medicament in the form of a gel or a powder are superposed in sequence and formed in a die.

Abstract: A freeze and thaw indicator is provided utilizing the expansion characteristics of water when it undergoes a change from the liquid state to the solid state. An ampul having one side made weaker than its opposite side is substantially filled with water. Indicator paper having ink printed on one side is situated adjacent to the ampul. The indicator paper and ampul are housed in a blister pack plastic container for protecting the ampul from breakage. When the temperature around the indicator reaches the freezing point of water, the ampul breaks. During a subsequent thawing, the water flows on to the indicator paper causing the ink which is printed on one side to wick up, thereby indicating that the freeze or thaw has taken place.

Abstract: A sealable edged aperture is produced in a can top by a generally triangular shaped cutting element which severs a flap-like portion from the can top. The cutting element also includes a wedging structure for folding a portion of the severed flap into abutting relationship with the underside of the can top to provide a discrete seal edge on the aperture. The cutting element is carried on a lever arm which is pivotally attached to a manually grippable element positioned adjacent the can sidewall. A bridging element is also provided at the pivot point to support the opener in the can.

Abstract: A safety device for coupling one end of a main conduit of a first piping element coaxially to one end of a second piping element. The first piping element has a branch conduit adjacent to the one end of the main conduit, and the device includes an obdurating member inside the main conduit of the first piping element, an operating mechanism connected to the obdurating member and extending from the other end of the main conduit for moving the obdurating member between a first position and a second position to selectively open and close the passage between the one end of the main conduit and the branch conduit, clamping apparatus mounted on the second piping element for clamping the two elements together, and an actuator mounted externally on the second piping element for engagement with the operating mechanism when the two elements are coupled together to move the mechanism between the first and second positions.

Abstract: Closures having a generally triangular shape corresponding to tab opening cans include a seal plug with depending sealing lips and an internal cavity which facilitates installation and provides a sealing force. A resilient spring member may also be imbedded in the closure about the cavity to increase the sealing. The closures are resealable and may be reusable. A pouring or drinking spout and protective lip structure is also disclosed. The closures are opened by means of handles which define the cavity. The handles may include a structure for locking the handle on the rim of the can during dispensing. The closures are suited for use on a wide variety of can aperture sizes.