摘要:
A metalworking machine such as a punch or shear has a pair of substantially parallel and spaced-apart frame plates which are mounted fixedly relative to each other and which flank a vertically displaceable work slide formed at its upper edge with a T-shaped notch. A hydraulic ram is fixed to the plates and has a flat T-shaped piston rod receivable in the T-shaped notch of the slide for force transmission between the piston and the slide. The piston and slide can be separated from each other by relative lateral displacement perpendicular to the plane of the slide.
摘要:
An angle shear for cutting profile steel has generally parallel and spaced front and rear frame plates fixed relative to each other, at least one fixed blade carried on the front plate, a working slide displaceable vertically between the frame plates, and individual guide rails extending at an acute angle of generally 45.degree. to the vertical and secured to one of the frame plates. An angle slide displaceable along the guides generally at 45.degree. to the vertical between the plates carries a movable blade displaceable past the fixed blade. Formations link the slides for joint synchronous movement between the plates. Both slides move in generally the same plane and have front and rear faces directly confronting and engaging the front and rear plates, respectively.
摘要:
A power shear has a pair of parallel frame plates spaced apart to either side of a fixed blade and a movable blade. The movable blade can be displaced past the fixed blade to shear a workpiece extending across the plane and resting on the fixed blade A holddown plate is slidably mounted in rails on one of the frame plates and has a pair of edges guided by the rails and overreached by teeth formed on these rails. These edges of the holddown plate are formed with notches that can be aligned with the teeth to allow removal of the holddown plate in a direction perpendicular to its plane. A positioning spindle threaded through a nut fixed on the one frame plate can have an enlarged head engaged in a T-shaped cutout of the holddown plate so that when the holddown plate is lifted perpendicularly off the frame plate it is also disengaged from the positioning spindle.
摘要:
A shear for cutting profile and/or flat and/or solid-section steel has at least one vertical frame plate having a front face and a back face and formed with a throughgoing workpiece window, at least one fixed blade carried on the plate at the window, a working slide displaceable on the back face of the frame plate and carrying a movable blade passing past the fixed blade on movement of the slide on the frame plate, a generally flat holddown plate carrying a holddown element, and a pivot supporting the holddown plate on the frame plate for movement parallel to the frame plate and about a horizontal axis generally perpendicular to the frame plate between a raised position and a lowered position, and for movement also about a vertical axis between a use position lying against the front face of the frame plate and a service position extending transversely therefrom. Clamps secure the holddown plate in the use position against the frame plate with limited pivoting about the horizontal axis only. An actuator braced between the frame plate and the holddown plate in the use position of same pivots same limitedly about the horizontal axis and thereby presses the holddown element against a workpiece engaged through the window.
摘要:
A method and device for reading out a fiber gyroscope based on the concept of determining, by gating the light signal for particular time intervals, only one particular phase section of the read-out signal of a photodetector of the fiber optic gyroscope modulated with a periodic function. Further phase sections are determined in sequence and cyclically in the same manner so that the entire photodetector signal is detected after one full cycle. Signals associated with individual phase sections are averaged separately and processed to obtain a rotation rate-proportional signal. The read-out signals can also be processed so that a control signal for deviation of the phase modulator is obtained and/or the gyroscope scale factor is stabilized.
摘要:
Peptides having essentially the sequence of bovine pancreatic trypsin inhibitor (aprotinin) wherein one or more of the amino acids at positions 15, 16, 17, 18, 34, 39 and 52 are replaced by any naturally occurring amino acid produced by recombinant DNA technology, process, expression vector and recominant host therefor and pharmaceutical use thereof. Such peptides being useful as therapeutic agents in diseases connected with the presence of excessive amounts of proteinases.
摘要:
The invention relates to acarviosyl transferase from actinomycetes, mainly from Actinoplanes sp. SE 50/110 and its mutants, to a process for isolating, purifying and characterizing the enzyme, to the isolation and characterization of the acbD gene encoding the acarviosyl transferase, to the expression of the acarviosyl transferase in a heterologous host organism, to the use of the acarviosyl transferase for converting acarbose minor constituents into acarbose or for preparing acarbose homologues, to the use of the acarviosyl transferase in acarbose purification, and also to the preparation of production mutants in which formation of minor constituents is reduced by means of inactivation of the acarviosyl transferase gene.
摘要翻译:本发明涉及来自放线菌的主要来自Actinoplanes sp。的acarviosyl转移酶。 SE 50/110及其突变体,用于分离,纯化和表征酶的过程,分离和表征编码α-乙酰氧基转移酶的acbD基因到异源宿主生物体中的阿卡非糖转移酶的表达,使用 的阿卡波糖转移酶用于将阿卡波糖次要成分转化成阿卡波糖或用于制备阿卡波糖同系物,以及在阿卡波糖纯化中使用阿卡波糖转移酶,以及制备生产突变体,其中通过灭活 阿维生素转移酶基因。
摘要:
Peptides having essentially the sequence of bovine pancreatic trypsin inhibitor (aprotinin) wherein one or more of the amino acids at positions 15, 16, 17, 18, 34, 39 and 52 are replaced by any naturally occurring amino acid produced by recombinant DNA technology, process, expression vector and recominant host therefor and pharmaceutical use thereof. Such peptides being useful as therapeutic agents in diseases connected with the presence of excessive amounts of proteinases.
摘要:
A method and apparatus for reading out angular rates by means of a passive optical resonator provides for the generation of three component light beams individually tuned to distinct resonator modes. One component light beam is radiated into the resonator in the opposite direction to the two other component light beams. By means of an evaluating logic, differences are formed between the counterrotating light beams and the differences weighted and subtracted from each other to provide angular rate. The optical length of the resonator, and, thus, temperature are available as a weighted sum of the differences. Temperature drift may be eliminated from angular rate measurements by compensation according to the invention.
摘要:
A process is disclosed for sterilising ambient air conducted in an air duct (401), as well as a use of a device for breaking down gaseous hydrocarbon emissions in order to sterilise ambient air conducted in an air duct (104), and a device for sterilising ambient air conducted in an air duct (401). Ambient air is supplied to the air duct (401) of an UV unit (403) for irradiation with UV radiation, and the thus pre-purified ambient air is supplied to a downstream ionization unit (407) arranged in the air duct and in which the ambient air is ionised.