摘要:
The heterologous expression of the reverse transcriptase from the Avian Myeloblastosis Virus (AMV-RT) in prokaryotic cells and in particular Escherichia coli (E. coli) is described in the present invention. The invention also includes certain measures to simplify the purification of the heterodimeric AMV-RT.
摘要:
The invention pertains to a window shade with a shade panel, with a rotatable winding shaft 1 for winding up the panel onto the winding shaft 1 to form a roll 2 and for unwinding the panel from this winding shaft 1 to form a panel surface 3, and with a drive M. The invention is characterized in that control means R are provided upline of the winding shaft 1 to vary the rotational speed of the winding shaft in such a way that the winding shaft 1 has several periods in each revolution, where the angular velocity changes in a predetermined manner within each period.
摘要:
A cassette assembly comprising an X-ray cassette, with a tube side and a cover, and an intensifying screen wherein the cassette assembly further comprises a compensation element adapted to the intensifying screen so as to have a cassette assembly with predetermined X-ray absorption.
摘要:
The invention involves an insulating glass arrangement with at least one area between the panes, sealed up by glass panes (1, 1′) and an edge layer connection (2), and with a foil shade located in the area between the panes consisting of a sun-blocking foil the end (40) of which is attached to one of the sides of the glass panes (1, 1′) to be covered and which rolls up to a winding (41) on a movable winding shaft (3) or rolls out to a flat surface (42). It also consists of a winding drive unit for transmitting a torque to the winding shaft and of a lateral guide mechanism (5a, 5b) for guiding a bearing system of the winding shaft (3) along a linear path (S), and of a shade drive unit for actuating the foil shade. According to the invention, an internal linear guide mechanism (6a, 6b) is provided for aligning the winding shaft (3) at a right angle to the linear path (S).
摘要:
The present invention relates to a control system for a hybrid system comprising at least one energy store (1) and an energy source (2), the control system using a charge state (Z) in the at least one energy store (1), a nominal operating point (P11) of the energy source (2) and a system power (P1) which is currently to be output to ascertain a storage power (P3) which is to be output or received by the at least one energy store (1) and a source power (P2) which is to be output by the energy source (2) on the basis of at least one optimization criterion. In order to create a particularly flexible control system, the invention provides that at least one charge limit value (P4, P7, P8) and at least one discharge limit value (P5, P9, P10) for the at least one energy store (1) and a power limit value (P12) for the energy source (2) are also used at the same time in order to ascertain the storage power (P3) and the source power (P2), and that the at least one charge limit value (P4, P7, P8), the at least one discharge limit value (P5, P9, P10), the power limit value (P12) and the nominal operating point (P11) can be parameterized via an interface (5) in the control system.
摘要:
This emptying station is suited for emptying contents from bulk bags, especially bulk bags containing particulate hazardous materials as their contents. The emptying station includes a bulk-bag receptacle body having a top opening and bottom outlet, a bulk-bag cutting subassembly in the receptacle body, a raisable and lowerable top closure, and a sealing structure. The cutting subassembly includes at least three cutters each having an associated blade facing upwards, with the cutters collectively arranged to define a pyramid having an apex, and puncture pin positioned at the apex to point upwardly. In operation, a bulk bag is suspended from the top closure, then lowered with the top closure to pass the bulk bag into the receptacle body and cause the substantially flat bottom of the bulk bag to be pieced by the puncture pin and cut by the blades of the cutters to start emptying contents from the bulk bags to the bottom outlet. The sealing structure seals gaps formed between inner surfaces of the side walls and the bulk bag to prevent dust from escaping through the top opening. As the bulk bag is emptied, the top closure continues to lower until the top closure is positioned in a closed state in the top opening. Spray nozzles are preferably arranged in the receptacle body for external and/or internal rinsing of the emptied bulk bag.
摘要:
Cyanuric chloride moldings, especially tablets and flakes, have advantages over powders in ease of handling. The moldings are produced by droplet or strip application of molten cyanuric chloride on to a surface and dissipation of the latent heat of fusion by cooling the surface or contacting the melt applied as droplets or strips with a cooling gas.
摘要:
Organopolysiloxane particles consist of a single molecule, are crosslinked, and contain metal atoms in the zero valent oxidation state, the metal atoms in each case being in intermetallic interaction with at least one further metal atom in the zero valent oxidation state, have an average diameter of 5 to 200 nm and are soluble to the extent of at least 0.1% by weight in at least one organic solvent chosen from the group consisting of methylene chloride, pentane, acetone, toluene and ethanol, at least 80% of the particles having a diameter which deviates from the average diameter by not more than 30%.
摘要:
A process for the production of polyisocyanates having a biuret structure, comprising continuously combining organic diisocyanates having aromatically attached isocyanate groups in a mixing chamber with organic diamines having aromatically attached amino groups in a molar ratio of at least 8:1 to form a reaction mixture; and reacting said reaction mixture at a temperature of above 180.degree. C., wherein a residence time of said reaction mixture in the mixing chamber from when said organic diisocyanates and said organic diamines are combined is at most 60 seconds.
摘要:
In the esterification of aliphatic C.sub.2 -C.sub.6 -carboxylic acids with aliphatic C.sub.1 -C.sub.4 -alcohols, the ester formed is removed by azeotropic distillation together with the water of reaction. After the water of reaction has been separated in a separating condenser, the ester phase is freed, by washing with water, from acid carried over, and water and alcohol are then removed by distilling off a small fraction of the ester.In this way no salt-containing effluents are produced. The ester is obtained in a very good yield, free from acid and alcohol.