An extruded shape diatomaceous earth biocarrier for biologically active substances (e.g. enzymes) and cells having a mean pore diameter of at least about 20 microns. The biocarrier is made from either calcined or flux-calcined diatomite having a particle size of about 10 microns or greater and a mean pore diameter of about 5 microns or greater. The inventive biocarrier has a greater mean pore diam...

A solid fuel burner 1 has a first chamber 2 for receiving a combustible fuel to be gasified and a substantially conical upwardly directed extraction zone connecting a bottom portion of the primary chamber 2 with a secondary chamber 8 through the apex region 42. The combustible fuel presents a relatively large surface area G into the extraction zone F and relatively low velocity gases can leave the...

The invention relates to carbon membranes for the separation of gaseous species from each other and to a process for the production of these. The membranes have uniform pore sizes of a predetermined size, with a very sharp upper size cutoff. The membranes are produced from carbon containing non-melting material in sheet form by strictly controlled pyrolysis at a certain rate of increase of tempera...

The invention relates to carbon membranes for the separation of gaseous species from each other and to a process for the production of these. The membranes have uniform pore sizes of a predetermined size, with a very sharp upper size cutoff. The membranes are produced from carbon containing non-melting material in sheet form by strictly controlled pyrolysis at a certain rate of increase of tempera...

The invention relates to a device for the injection of implants, preferably implants "in the form of small rods" (called rods), which are used for the long-term treatment of diseases, whose essential features are the completely transparent construction, especially of the injector body (3), as well as a protecting device which prevents the plunger rod from falling out, and a protective cap (6) for ...

Apparatus for sealing an opening (12) in the end face (13) of a rotating drum (10), including a stationary backing plate (24), annular seal ring (20), surrounding the opening and extending in a sealing manner between the backing plate and the end face, resilient means (30 or 52) biasing the sealing ring into contact with the end face, and adjustable means (36 or 56, 58) for varying the force exert...

A device (6) for recombining hydrogen and oxygen released in lead-acid storage batteries as well as present in their electrochemical conversion which device consists of electrodes (1) employed in a stack enveloped in a sheath (2) of microporous material with the individual electrodes also being separated by separators (3) of such material. The electrodes comprise a combination of tungsten carbide ...

A device (6) for recombining hydrogen and oxygen released in lead-acid storage batteries as well as present in their electrochemical conversion which device consists of electrodes (1) employed in a stack enveloped in a sheath (2) of microporous material with the individual electrodes also being separated by separators (3) of such material. The electrodes comprise a combination of tungsten carbide ...

A mechanical disintegration is effected in which substantially only the metal sheath of the small batteries is torn apart. The crushed material is roasted at 500 DEG to 1000 DEG C. in a state of motion in an oxidizing atmosphere and the volatilized mercury is recovered from the exhaust gas. The roasted material is separated by sieving and magnetic separation into an iron-containing scrap fractio...

In an improved charging set for the regenerative recharging of dry batteries that consists principally of a hollow insulating case (1) provided with an inner hole (13) for removably receiving standardized types of dry batteries, with mains contact pins (21, 22) for applying the charger set to nearly all standardized types of mains sockets, and of a charger rectifier circuitry, the improvement acco...

In a method for eliminating creaking floor noises from floor types in which an underlay 124, for example of particle board, is supported by a heat-insulating material 123, for example cellular plastic panels, a plurality of elongate spacer elements 31 made of hard and smooth material, for example metal or plastic laminate, are arranged between the heat-insulating layer 123 and the underlay 124. To...

For the purpose of avoiding allergy tendencies, and tendencies for loosening to occur between the fibre and the plastic, in a means of fibre character for strengthening mechanical, for example odontological constructions, the means consists of carbon fibre which has been treated with a monomer mixture containing methyl methacrylate, cross-linking agent and inhibitor. The monomer mixture can contai...