摘要:
A packaging device for biological products, comprising a parallelepiped-shaped container having an upper face, a lower face, and two side faces extending in a longitudinal direction between two end faces and defining at least one first recess, the device comprising a distinct storage element to be housed immovably in the first recess of the container in a direction parallel to the longitudinal direction, the storage element comprising a storage zone for a first type of receptacle of biological products, the storage element and/or the container being conformed to bound at least one second recess for a second type of receptacle of biological products, the container comprising an opening on an end face provided for introducing or removing the storage element and/or the second type of receptacle, the device comprising a cover distinct from the container for selectively closing the opening.
摘要:
A unique human powered weapon for hunting or target shooting combining a sling shot, an arrow shooting device and a blow gun with sights and collapsability.
摘要:
An open pore liquid purification apparatus containing semipermeable membranes, is made by: (1) placing a module, made of bonded, resin coated filler particles, having a plurality of spaced circular bores therethrough, in a stationary vertical position, (2) placing a viscous casting composition into each of the bores, the composition containing 10 parts polysulfone resin and 10-40 parts of an organic solvent, the solvent being effective to homogeneously disperse and partly dissolve the polysulfone, (3) gravity dropping a casting bob, having a circular cross-section at its widest point, down through each bore to form a continuous film of casting composition on the inside of each bore, and then (4) immediately exposing the film to a low humidity atmosphere, and (5) contacting the film with a suitable leaching liquid, to form a polysulfone ultrafiltration membrane on the inside of each module bore; the membrane being resistant to solvents and operable at a pH of about 1 to 12 and a temperature of about 5.degree. to 85.degree. C.
摘要:
Piston for an internal combustion engine having an upper face which forms a part of an expandable combustion chamber. The piston is provided with a cavity or deep depression formed in the upper face to promote fuel-air mixing as well as to improve the combustion process within said combustion chamber. The cavity is formed within a cup-like insert member, so positioned within the piston body that the cup-like insert is substantially spaced or insulated from the piston body, thereby avoiding or minimizing heat loss to the piston walls.