摘要:
As disclosed herein, cryoprobes comprising no return line can be operated efficiently and safely on known supply systems for cryoprobes. Typically the supply systems provide a fluid for connected cryoprobes so that they will provide the desired cooling capacity. The cooling capacity can be adjusted through the supply system. An adapter for connecting a supply system with a cryoprobe for open fluid cooling, wherein the adapter comprises: a first fluid adapter connector for connecting a first supply terminal of the supply system; a second fluid adapter connector for connecting a second supply terminal of the supply system; a feed line output for connecting a feed line of the cryoprobe; a first fluid line for the fluid connection of the first fluid adapter connector with the feed line output; and a second fluid line for the fluid connection of the feed line output with the second fluid adapter connector, wherein the fluid flow in the second fluid line is reduced compared the one in the first fluid line.
摘要:
Host vector system and methods for plasmid DNA and recombinant protein production. The system allows copy number control of a ColE1 plasmid in E. coli by an RNA molecule that is transcribed from the host's genome and that interacts with plasmid-transcribed RNAI or RNAII. The system can be extended to combine PCN control and antibiotic-free selection.
摘要:
The present embodiments relate to an apparatus which can be used to increase the bending strength of a tube in its connection region. The apparatus may include an adapter unit, the shape of which is matched to a cross-sectional shape of a tube end in such a manner that on the one hand the adapter unit can be fitted to a tube connection of a device instead of the tube end and on the other hand the tube end can be fitted to the adapter unit. The apparatus may also include at least one spring element made of glass fiber reinforced plastic, which is connected to the adapter unit, projects out of the adapter unit in the direction of the tube and has a termination element at the projecting end, against which termination element a fitted tube abuts when subjected to bending, so that the rigidity of the spring element increases the bending strength of the tube in the region between the adapter unit and the element.
摘要:
A modular construction micro-reactor with parallel microchannels on fluid guide plates for chemical reactions, but not for evaporation purposes is known. A modular construction falling film evaporator is disclosed, comprising a stack of alternate gap-like evaporation chambers and sheet-like evaporator modules with an assembly of parallel microchannels, whereby the evaporation chambers are open above and/or below across the whole width of the module and the stack is arranged in a container. The falling film evaporator is used in a method for obtaining a gaseous phase from a liquid medium on a technical scale and is suitable for the concentration of thermolabile solutions and rapidly adjustable production of a gas stream.
摘要:
An x-ray device is provided. The x-ray device includes a C-arm, on which a radiographic source and a heat pump are arranged. At least sections of the C-arm are hollow, such that at least sections of the radiographic source and the heat pump are arranged inside the C-arm.
摘要:
A combustion chamber for an industrial gas turbine has thermal protective elements which are installed along the inner circumference of its casing. The thermal protective elements are cooled by cooling air which is added to the fuel in the region in front of a front casing section after the cooling. A brush seal is installed between the front casing section and the thermal protective elements, where the brush seal is configured in segments. The combustion chamber can be sealed against leakages of cooling air in all operating states of the combustion chamber.
摘要:
A copper alloy subjected to a thermo-mechanical treatment and composed of (in wt %) 15.5 to 36.0% Zn, 0.3 to 3.0% Sn, 0.1 to 1.5% Fe, optionally 0.001 to 0.4% P, optionally 0.01 to 0.1% Al, optionally 0.01 to 0.03% Ag, Mg, Zr, In, Co, Cr, Ti, Mn, optionally 0.05 to 0.5% Ni, the remainder being copper and unavoidable contaminants, wherein the microstructure of the alloy is characterized in that the proportions of the main texture orientations are at least 10 vl % copper orientation, at least 10 vl % S/R orientation, at least 5 vl % brass orientation, at least 2 vl % Goss orientation, at least 2 vl % 22RD-cube orientation, at least 0.5 vl % cube orientation, and finely distributed iron-containing particles are contained in the alloy matrix.
摘要:
A field device for process instrumentation, i.e., a measuring transducer, actuator, or mobile operating device, which is suitable for use in explosion-prone areas. The field device is battery-driven and has at least one battery for supplying an electronic unit with energy. A battery compartment is constructed such that standard batteries can be inserted without the risk of spark formation. A corresponding design of a supply circuit ensures that the circuit can only be closed, for example, when closing the battery compartment once a lid is closed to the extent that the battery compartment meets the requirements for use in explosion-prone areas. The invention has the advantage that comparatively inexpensive standard batteries can be used and that the ignition protection is maintained during the entire battery switching process.
摘要:
The invention relates to a pump comprising a pump unit, an intake line, and a valve device associated with same for implementing suction regulation of the pump, and comprising an intake region downstream from the valve device as viewed in the direction of flow of the medium conveyed by the pump.