摘要:
A method for the production of a contact structure of a semiconductor component comprises the masking of at least one side of a semiconductor substrate with a coating and the partial removal thereof in at least one pre-determined region.
摘要:
A fuel injector, in particular for direct injection of fuel into a combustion chamber of an internal combustion engine, has a valve needle, which is situated in a nozzle body and is operable by an actuator, and a valve closing body, which is operatively connected to the valve needle and, for opening and closing the valve, cooperates with a valve seat face formed on a valve seat body, the valve seat body being provided with at least one spray hole. The at least one spray hole has a first cylindrical section having a fuel inlet opening and a second cylindrical section situated downstream from the first cylindrical section and having a fuel outlet opening, the first and the second cylindrical sections not running coaxially to one another.
摘要:
Method for producing a silicon ingot comprising the following steps: providing a container to receive a silicon melt, providing a temperature control device to control the temperature of the silicon melt in the container, arranging raw material in the container comprising silicon and at least one hydrogen-containing additive to reduce the formation of dislocations, and control of the temperature in the container (3) for the directed solidification of the silicon melt.
摘要:
The present invention relates to a process for the production of wood-base materials which have at least one thin veneer layer adhesively bonded over the surface to a substrate or to further veneer layers, which process comprises the following steps: i. impregnation of a veneer with an aqueous curable composition which comprises a) at least one curable urea compound selected from urea compounds H which have at least one N-bonded group of the formula CH2OR, where R is hydrogen or C1-C4-alkyl, and/or a 1,2-bishydroxyethane-1,2-diyl group bridging the two nitrogen atoms of the urea, precondensates of the urea compound H, and reaction products or mixtures of the urea compound H with at least one alcohol which is selected from C1-C6-alkanols, C2-C6-polyols and oligoethylene glycols, and b) at least one catalyst K effecting crosslinking of the urea compound; ii) gluing of the impregnated veneer and/or the substrate with a glue composition and iii) processing of the glued veneer to give a wood-base material at elevated temperature with curing of the crosslinkable urea compound, the impregnated veneer comprising the crosslinkable urea compound in substantially uncrosslinked form before the gluing in step ii).
摘要:
A fuel injector, in particular for direct injection of fuel into a combustion chamber of an internal combustion engine, has a valve needle, which is situated in a nozzle body and is operable by an actuator, and a valve closing body, which is operatively connected to the valve needle and, for opening and closing the valve, cooperates with a valve seat face formed on a valve seat body, the valve seat body being provided with at least one spray hole. The at least one spray hole has a first cylindrical section having a fuel inlet opening and a second cylindrical section situated downstream from the first cylindrical section and having a fuel outlet opening, the first and the second cylindrical sections not running coaxially to one another.
摘要:
A low melting temperature solder is provided for producing a solder contact between a connection element and a contact structure of a semiconductor component.
摘要:
Methods are disclosed for, early diagnosing chronic rejection (CR) in a transplanted subject, monitoring CR in a transplanted subject at risk of developing CR, preventing, inhibiting, reducing or treating CR in a transplanted subject, or identifying agents for use in the prevention, inhibition, reduction or treatment of CR, based on genes which are differentially expressed in transplant biopsy tissues, before any overt clinical or histological manifestation of CR is detected in the transplanted subject.
摘要:
A method and device for the controlled tempering of a casting trough integrated between a supply vessel for a molten metal (e.g., copper or a copper alloy), and at least one continuous casting mold. The trough walls and the trough floor of the casting trough are at least partially provided with a lining layer having a specific electrical resistance between 10−1 &OHgr;·m to 10−6 &OHgr;·m and being resistant to the heat of the molten metal. The lining layer is inductively heated by an electrical heating device arranged around the lining layer.
摘要:
An electromagnetic ball valve for a flow medium under pressure such as a respirating gas for a respirator which must be adapted to use with a respirator which operates at a high frequency in the range of fifty times the usual frequency. Such ball valve must be employed in the breathing gas supply so as to open and close the supply path and a small volume of gas internal of this apparatus permits this control. The electromagnetically ball valve is arranged with the electromagnetic pole pieces in a sheath and the pole pieces include a flow passage in which a ball moves between a seat and an abutment under the control of a separate electromagnetically controlled pole piece. The seat is cooperative with the ball valve with one connection for the flow medium and the abutment includes a connection for the space around the ball valve under another flow connection. With a delivery side connection through the space around the ball and with a seal on the seat it acts as a NC valve. With a delivery side connection through the seat against the ball and hence contact on the abutment it operates as a NO valve. Two magnetic coils around the respective pole pieces one having the seat and the other having the abutment move the ball into the desired end position and make remanences ineffective.