In a spinning machine or winder comprising at least one pneumatic device (7) including a supply line (8) for a first pressure (P.sub.1), a regulating line (9) for an operating pressure (P.sub.2), a valve system (10), a manometer (13), and a data processing unit (14), the regulating line (9) is connected to the manometer (13) in such a way that the operating pressure (P.sub.2) is measured by the manometer (13). The valve system (10) comprises a first valve (11), which is connected to the supply line (8), or a first path (17) of a directional control valve (16) for feeding a pressure medium into the regulating line (9), and a second valve (12), which is connected to a surrounding atmosphere, or a second path (18) of a directional control valve (16) for draining the pressure medium from the regulating line (9), wherein the data processing unit (14), which is connected to the manometer (13) and to the valve system (10), is designed for opening the first valve (11) or the first path (17) and closing the second valve (12) or the second path (18) if the operating pressure (P.sub.2) is less than a first set value, and opening the second valve (12) or the second path (18) and closing the first valve (11) or the first path (17) if the operating pressure (P.sub.2) is greater than the first set value or a second set value, wherein the first pressure (P.sub.1) is greater than the operating pressure (P.sub.2).

A method optimizes production of a rotor spinning machine having a plurality of identical spinning units, with each spinning unit having a spinning rotor driven by a rotor drive at a rotor speed to produce yarn at a delivery speed. A permissible range with a minimum delivery speed and a maximum delivery speed for the delivery speed of the spinning units is specified. Operation of the spinning units is started with a starting delivery speed within the permissible range. Current production capacity of the spinning units or the rotor spinning machine is continuously calculated. Current delivery speed of the yarn is regulated as a function of the current production capacity in such a manner that a maximum production capacity is achieved. A rotor spinning machine in accordance with method is also provided.

A method optimizes production of a rotor spinning machine having a plurality of identical spinning units, with each spinning unit having a spinning rotor driven by a rotor drive at a rotor speed to produce yarn at a delivery speed. A permissible range with a minimum delivery speed and a maximum delivery speed for the delivery speed of the spinning units is specified. Operation of the spinning units is started with a starting delivery speed within the permissible range. Current production capacity of the spinning units or the rotor spinning machine is continuously calculated. Current delivery speed of the yarn is regulated as a function of the current production capacity in such a manner that a maximum production capacity is achieved. A rotor spinning machine in accordance with method is also provided.

A yarn producing apparatus for producing carbon nanotube (CNT) yarn by aggregating CNT fibers. A front roller continuously draws the CNT fibers from at least one CNT forming substrate, a yarn producing unit aggregates the CNT fibers drawn by the front roller, and a status monitors a state of the CNT fibers drawn from the CNT forming substrate, or the CNT yarn.

A yarn producing apparatus for producing carbon nanotube (CNT) yarn by aggregating CNT fibers. A front roller continuously draws the CNT fibers from at least one CNT forming substrate, a yarn producing unit aggregates the CNT fibers drawn by the front roller, and a status monitors a state of the CNT fibers drawn from the CNT forming substrate, or the CNT yarn.

A machine for the production of knitted goods includes a plurality of stitch-forming elements, at least one stitch-forming location, an associated spinning device at the at least one stitch-forming location, at which a sliver (FB) or a yarn is produced from a roving yarn (VG) and the sliver (FB) or yarn is fed to the stitch-forming elements. The spinning device has separate drive devices, which can be actuated in a manner that enables the spinning device to produce a sliver (FB) or a yarn of variable thickness from roving yarn (VG) and which can be fed to the stitch-forming elements.

A machine for the production of knitted goods includes a plurality of stitch-forming elements, at least one stitch-forming location, an associated spinning device at the at least one stitch-forming location, at which a sliver (FB) or a yarn is produced from a roving yarn (VG) and the sliver (FB) or yarn is fed to the stitch-forming elements. The spinning device has separate drive devices, which can be actuated in a manner that enables the spinning device to produce a sliver (FB) or a yarn of variable thickness from roving yarn (VG) and which can be fed to the stitch-forming elements.

A yarn producing apparatus produces CNT (carbon nanotube) yarn from CNT fibers while causing the CNT fibers to run. The yarn producing apparatus includes an aggregating unit that aggregates the CNT fibers, and a twisting and winding device that twists the CNT fibers aggregated by the aggregating unit. The aggregating unit includes an adjusting mechanism that adjusts the aggregation state of the CNT fibers.

A yarn producing apparatus produces CNT (carbon nanotube) yarn from CNT fibers while causing the CNT fibers to run. The yarn producing apparatus includes an aggregating unit that aggregates the CNT fibers, and a twisting and winding device that twists the CNT fibers aggregated by the aggregating unit. The aggregating unit includes an adjusting mechanism that adjusts the aggregation state of the CNT fibers.

Disclosed are a composition for an organic optoelectronic device including at least one kind of a first host compound represented by the Chemical Formula 1 and at least one kind of a second host compound represented by the Chemical Formula 2, and an organic optoelectronic device and a display device including the composition.