Abstract: An enzymatically active product insoluble in aqueous medium is prepared by treating chitosan as an inert support with a dialdehyde, after which an enzyme is fixed to the support thus treated. The chitosan may be in powder-form or in flake-form, for example obtained by fragmenting a film of anhydrous chitosan. The enzymatically active product insoluble in aqueous medium may be treated with a compound containing an amino group and/or with a reducing reagent. The product may be freeze dried optionally in the presence of twice its weight of mannitol.

Abstract: The invention relates to a method and a device for obviating the risk of injection fuel leakage into the cooling system of Diesel engine injectors in the region of the glazed mating surfaces of the injector nozzle body and nozzle holder traversed by a fuel intake passage and by at least one liquid coolant inlet passage and one liquid coolant return passage, wherein is provided, at the plane defined by said glazed surfaces, leakage-fuel recovery passages drilled between the said fuel intake passage and the said cooling passages and having no communication therewith.

Abstract: 2-R-substituted-1,2,5-thiadiazole-3-ones have broad spectrum antibacterial and antifungal activity. They are especially useful in agriculture to protect plants against diseases such as leaf, stem, and fruit spotting, internal discoloration and decay of fruits and vegetables. These compounds are particularly active against diseases caused by the genera Pseudomonas, Xanthomonas, Erwinia, and Corynebacterium.

Abstract: A switching network comprises a matrix of cross-point switches disposed in a pattern at selected ones of the cross-points in an array of mutually othogonal inlets and outlets. The pattern of selected cross-points is built up from a rectangular array of basic layouts each comprising eight cross-point switches distributed among the 16 cross-points which is formed by a group of four consecutive inlets crossing a row of four consecutive outlets. There are two types of basic layout: an A-type having its switches at the outer cross-points of its odd numbered lines and at the inner cross-points of its even numbered lines, and a B-type having its switches at the other cross-points. The basic layouts are disposed in a binary pattern over the matrix such that the matrix has a first line of alternating types of layout, a second line of alternating pairs of layout types etc.; each n-th line having its layouts in sets 2.sup.n-1 layouts of each type.

Abstract: A smokable cigar-like product whose interior is formed from prepared fragments of natural or manufactured tobacco leaves. The fragments have an irregularly contoured main surface which is generally larger in all its dimensions than the thickness of the original leaves. The orientation of the fragments is such that at least one line parallel to the main axis of the product passes through the major part of the fragments encountered at an angle of incidence which is greater than zero, for example, greater than fifteen degrees.

Abstract: A mold-locking or catching device which comprises a support on one mold half or part, a bellows anchored to this support at one side of the bellows, a hook engageable with the rim of the other mold half or part and carried by the other side of the bellows and means for swinging the hook laterally into and out of engagement with the rim of the other mold half when the bellows is activated by fluid pressure or depressurized respectively.

Abstract: A device to put the inner foil wrapper on soft packets in a very high speed cigarette packer comprises a head or wheel turning at intervals fitted with a number of radiating compartments capable of taking at most one bundle of cigarettes for packeting and a plurality of folding mechanisms including a folder with alternating movement.The wall of each compartment above the folder with alternating movement in the sense of rotation of the turning head or wheel comprises a thin plate. The folder with alternating movement carries a second thin plate towards the turning head or wheel so as to rebut during its forward movement the after end of the length of foil onto the surface of the former plate external to the corresponding compartment.

Abstract: Large hollow curved beams and arches are inexpensively produced by curving individual shallow components, such as channels, that are then tiered to form a large laminated member. Smaller beams or arches can be made by tiering the components, curving them all at one time, then fastening them together. Individual layers of curved components are usually fastened together consecutively or in multiple laminations to construct a member with a much higher moment of inertia than the sum of the moments of inertia of the layers in a non-fastened state.

Abstract: An apparatus for coating a glass container with a layer of plastic whereby the container rotates about a horizontal axis and moves past a coating station. A plurality of liquid applicator nozzle means, positioned above the coating station, supply uncured plastic liquid to associated areas on the container. Means are provided for supplying predetermined quantities of uncured plastic liquid to respective ones of the nozzle means such that each nozzle means provides a coating of desired thickness and composition on its associated bottle area. The container is also rotated during the subsequent curing of the plastic.

Abstract: A fibrinogen monitor for use in monitoring the concentration of iodinated fibrinogen distribution in the calf and thigh veins of bed-restricted patients. The fibrinogen monitor is an improved scintillation detector which a hospital staff member can manipulate using one hand to detect and record scintillation events at measured points along the leg of a patient while leaving the other hand free to aid in positioning the leg. The output of the monitor is digitized and provided both as a visual display and as a hard-copy record. The geometrical configuration of the probe of the monitor provides for increased sensitivity to gamma radiation without an attendant increase in probe size.

Abstract: A carburetor for an internal combustion engine has a circuit for delivering a primary air/fuel mixture into the induction passage and means for correcting the richness of the airfuel mixture in dependence of the amplitude of the alternating component of the depression which prevails in operation in the induction passage. The correction device has a movable member which meters an air or fuel flow cross-sectional area in the circuit. The position of the movable member is controlled in dependence of the alternating component by a pressure sensitive diaphragm. A frequency filter connects the induction passage and chambers separated by the diaphragm for dampening the alternating component of the depression by an amount which increases with the frequency of that component.

Abstract: Analogs of methionine.sup.5 -enkephalin and leucine.sup.5 -enkephalin wherein the L-phenylalanyl residue in position 4 has been substituted by various other amino acid residues are disclosed herein. These analogs exhibit agonist activity at opiate receptor sites and are thus useful as analgesics, non-addicting narcotic antagonists and anti-diarrheal agents.

Abstract: The invention relates to a servomotor for assisting the operation of a power brake system. The servomotor includes in a housing a power-assisting part and a part forming a hydraulic master-cylinder. The power-assisting part is adapted in use to be connected to an external power source such as a vacuum source. A valve assembly operated by an operator-operated intake member controls the generation of a pressure differential across a driving piston by allowing air to replace the vacuum on one side of the piston. The master-cylinder part includes an assembly having two coaxial pistons. The first piston is attached to the driving piston of the power assist part whereas the second piston is actuated by the intake member. Both coaxial pistons project into a chamber which is divided by a sealing ring. The central piston is adapted to pass through the sealing ring in response to an input force from the input member to further pressurize the fluid in the outlet portion of the chamber.

Abstract: There are disclosed novel lubricating compositions containing a major proportion of a lubricating oil and a minor proportion of an oil soluble polymer additive, and possibly other additives, wherein said polymer additive is a copolymer of ethylene, a monoolefin having 3 to 6 carbon atoms or a monoolefin having 3 to 6 carbon atoms and a non-conjugated diene with one or more specific nitrogenous monomers, said polymer having a reduced viscosity, measured in decalin at 135.degree. C, comprised between 0.5 and 2 and a polydispersity lower than 5.Such a polymer additive improves the oil viscosity index while ensuring the dispersion of the slurry it may contain.

Abstract: An air filtering system includes a motor driven exhaust fan operable to draw air through a filter for particulate spray material, support means for supporting a dispenser adapted under operator control to dispense particulate spray material into the air and means responsive to operator removal and return of the dispenser to the support means for energizing and deenergizing the motor, respectively.

Abstract: A control circuit for delivering control signals to interrupt admission of the fuel-air mixture in the low speed and idle circuit of the carburetor of an internal combustion engine. The control circuit is operated according to the engine operating conditions. The control signal is delivered in response to comparison of a signal whose level is representative of the positive or negative variations in the duration of an engine cycle with a substantially periodic signal to generate a pulse shaped signal. The width of the pulses increases when the vehicle is accelerating and decreases when the vehicle is decelerating.

Abstract: A means of damping cyclic fuel injection pressure drop in a constant-stroke, variable delivery flow rate injection jerk-pump for an internal combustion engine, consisting in slowing down fuel pressure drop at the end of every injection cycle by increasing the added pressure head losses of fuel backflow by a reduction of the free passageway cross-sections through which the fuel flows successively on its return path from the pump working chamber to the spill port.

Abstract: The system for handling a container comprises a vehicle on which the container may bear in the transporting position and which comprises at least one jack for raising or lowering the container by pivoting it about an axis of pivotal connection between the container and the vehicle, and a fixed installation for receiving the container in the position of use, which comprises a device for locking the vehicle, after the vehicle has moved rearwardly. The position of use of the container is an inclined position in which the lower end part of the container is set in position in a frame of the fixed installation. The axis of the pivotal connection between the container and the vehicle is embodied by two articulations, each of which articulations comprises a male element having a surface of revolution about a horizontal axis and connected to the container and a female element connected to the vehicle and comprising a conjugate surface of revolution to which surface of revolution there are connected divergent surfaces.

Abstract: A process is provided for the production of a vegetable-based sweetened condensed milk in which a vegetable protein in the form of an aqueous solution or suspension is subjected to partial enzymatic hydrolysis and a mixture containing approximately 4 to 9 parts by weight of fats, 8 to 18 parts by weight of the treated protein, 0 to 14 parts by weight of lactose, 40 to 55 parts by weight of sucrose and 25 to 32 parts by weight of water is prepared. The proteins in suspension are subjected to a partial precipitation and the precipitated fraction is eliminated after the enzymatic hydrolysis step. A basic salt may be added to the mixture which may or may not have been subjected to the partial precipitation step. Partial precipitation is preferably brought about by addition of a calcium salt in a concentration of up to 0.001 to 0.1 M or by adjustment of the pH of the hydrolysed suspension to a value of from 4.5 to 7.

Abstract: A mirror-orienting device for a laser levelling instrument utilizes an optical deflection system, a mirror which rotates about a fixed axis in the same plane as the mirror, a mirror lever fixed to the mirror at one end, a component for fine adjustment of rotation of the mirror, combined with a linear measurement indicator, which includes a measuring contact that moves axially. This allows the mirror to be oriented accurately, in relation to a reference direction, for example a horizontal or a vertical direction.