摘要:
A magnetic-tape cassette machine of the type including a horizontally extending tape drive shaft and a loading platform designed to hold the cassette upright during tape transport. To prevent the horizontally extending tape drive shaft from shifting axially during tape transport, one end of the shaft is supported against a first axial bearing secured to the machine housing and the other end is supported by an axial bearing secured to the loading platform. Alternatively, a single axial bearing is used limiting axial shifting of the tape drive shaft in one direction, and a permanent-magnet arrangement pulls the tape drive shaft in the same direction to prevent the shaft from shifting axially in the opposite second direction.
摘要:
In the case of a collector-less D-C motor designed as a disc motor with an external rotor, the permanently magnetized external rotor is supported in an axially space-saving manner in a bearing tube attached to the stator bedplate. For the purpose of facilitating centering of the stator bedplate in the air gap of the rotor during manufacture, a flange plate inserted onto the bearing tube serves for anchoring purposes, and the stator bedplate is secured to this flange plate.
摘要:
A driving mechanism for magnetic hard disc memories includes an isolated space for maximum cleanness, a driving motor mounted within the apparatus and having a stator and a rotor, the motor when energized having parts producing magnetic flux, a hub extending into the space of maximum cleanness for receiving therein at least one magnetic hard memory disc, a connection between the motor and the hub for driving the hub, a magnetic flux shield located between the parts producing the magnetic flux and the space of maximum cleanness, and the rotor being detachably connected to the rotor shaft.
摘要:
A driving mechanism for magnetic hard disc memories includes an isolated space for maximum cleanness from the remainder of the apparatus, a driving motor mounted within the apparatus and having a stator and a rotor, the motor when energized having parts producing magnetic flux, a hub extending into the space of maximum cleanness for receiving therein at least one magnetic hard memory disc, a connection between the motor and the hub for driving the hub, and a magnetic flux shield located between the parts producing the magnetic flux and the space of maximum cleanness.
摘要:
The production of polysaccharide networks, especially starch networks, having a high network density, high solidity, a low swelling degree, and exhibiting reduced water absorption and to the uses thereof, especially, in the filed of biodegradable plastics.
摘要:
Compositions and methods are disclosed for substantially liquid, gel, suspension, slurry, semisolid and/or colloid storage of biological samples following admixture with the herein disclosed storage composition, permitting substantial recovery of biological activity following storage without refrigeration. In certain embodiments, unfractionated blood or tissue samples may be stored without refrigeration for weeks, months or years in a form that permits recovery of intact DNA, RNA or protein components following the storage period.
摘要:
A printing press, in particular a sheet-fed offset printing press, includes at least one control device, a plurality of printing units, one or more varnishing units, and one or more dryers. Variables determining a dryness of the printing material are determined and used to optimize the drying process. For that purpose, the important material streams influencing the drying process are determined at least for the region of the printing press that contains the drying device(s).
摘要:
Polyvinyl alcohol gels, particularly hydrogels, which are produced by methods and formulas and are provided with a characteristic profile that is adjustable to a large extent, e.g., outstanding mechanical properties with moduli of elasticity of 30 MPa and stiffnesses of 25 MPa at a breaking elongation of 550 percent, or full transparency in a wide range of water contents.
摘要:
The present invention relates to nucleic acid sequences and proteins derivable therefrom that have been identified in Sorangium cellulosum, which proteins are catalytically active or participate in the biosynthetic pathway of disorazoles. The invention provides novel sequences which are necessary components of the disorazole biosynthetic pathway in addition to genes dszA-D.
摘要:
Polymer mixtures containing a first long-chain polymer and a second short-chain polymer. The structural parameters of the two polymers are coordinated in such a way that a polymeric material is obtained which is easier to process while being provided with improved mechanical properties and in part also improved thermal properties compared with the first polymer at suitable conditions for producing the polymer mixture as a result of networks being formed and heterocrystallization taking place.