摘要:
In a method for producing a streak-free quartz glass sheet with a highly homogeneous degree of refraction, a quartz glass rod is lowered into a melting pot parallel to a longitudinal axis of the quartz glass rod. A cross-section of the melting pot is larger than a cross-section of the quartz glass rod and determines a contour of the quartz glass sheet. The quartz glass rod is heated in the melting pot to a flow temperature whereupon the quartz glass rod is lowered until the quartz glass rod melts and a height of the quartz glass flowing in the melting pot reaches a desired quartz glass sheet thickness. The melting pot and the quartz glass rod move relative to each other in a direction which is perpendicular to the longitudinal axis of the quartz glass rod during the melting process. Preferably, the movement involves a rotational and a transverse movement.
摘要:
A method produces homogenous quartz glass plates without streaks. The method is applied to starting quartz glass body which has an X—X geometrical axis and good refractive index homogeneity in its central area, and a refractive index homogeneity decreasing as the axis lies further from a central area. The body is divided into at least two concave parts by longitudinal cuts parallel to the axis once the central area has been processed out of the body. The parts are placed separately in corresponding molds and heated therein such that they are molded to form quartz glass plates having a desired thickness.
摘要:
A radiation sensing device for sensing first radiation (15) comprises a radiation sensor (11) for sensing the first radiation and at least one first radiation guiding member (13) forming at least a part of a first radiation path for guiding, and preferably converging or focusing, the first radiation towards the sensor. The first radiation guiding member (13) also forms at least a part of a second radiation path for guiding second radiation emitted by an illumination device (12). A control circuit (20) comprises a first sensor circuit (21) for operating one or more radiation sensors (11), an illumination circuit (22) for operating one or more illumination devices (22), and at least one connection (26) amongst said circuits (21, 22).
摘要:
Novel fused pyrazine compounds are disclosed that have a formula represented by the following: The compounds may be prepared as pharmaceutical compositions, and may be used for the prevention and treatment of a variety of conditions in mammals including humans, including by way of non-limiting example, inflammation, rheumatoid arthritis and others.
摘要:
A system includes a capsule body having a casing introduced into a subject to perform, in liquid, examination of or treatment on the interior of the subject, the casing containing a permanent magnet, a mass of the casing excluding the magnet being set to be less than a product of a volume of the casing and a density of the liquid; a magnetic field generator that generates a magnetic attraction for the magnet to guide the capsule body; and a magnetic field generation device that controls the magnetic field generator to generate the magnetic attraction by setting a maximum value of the generated magnetic attraction vertically upward to the capsule body, to be equal to a maximum value of the generated magnetic attraction vertically downward to the capsule body, and by setting the maximum values to be less than a value obtained by multiplying a mass of the magnet by a gravitational acceleration.
摘要:
The invention relates to a rail vehicle for driving operation on track systems with ballast permanent way. The invention is to effectively avoid or at least significantly reduce an agglomeration of snow and ice in cavities of the vehicle underfloor.For this purpose it is provided that the rail vehicle in the region of its underfloor comprises at least one flexible membrane which spans hollow spaces which are positioned open towards the track systems or support frame structures of the underfloor of the rail vehicle.
摘要:
The accurate position detection without being affected by an unnecessary second magnetic field can be realized by calculating the unnecessary second magnetic field induced and generated at positions of magnetic field sensors by a guiding coil arranged the position detection area of the medical device due to an action of a first magnetic field generated by a magnetic field generator, at the time of position detection, and the second magnetic field is subtracted from the first magnetic field detected by the magnetic field sensors to calculate corrected magnetic-field information. Further, LUTs that store beforehand numerical information having a correlation with the second magnetic field induced and generated at the positions of magnetic field sensors are used to calculate the second magnetic field, thereby enabling to reduce an amount of calculation performed each time and realize high speed processing.
摘要:
In a device and a method for extracting non-magnetic ores from a pulp comprising non-magnetic ore particles and having a solid fraction of at least 30 mass percent, the pulp flows continuously through a reactor in the direction of flow and magnetic or magnetizable magnet particles that form ore magnetic particle agglomerations with the non-magnetic ore particles are added to said pulp. The ore magnetic particle agglomerations are moved by a magnetic field into an accumulation range of the reactor, and are then discharged out of reactor range and separated into ore and magnetic particles. In a device and a method, the separated magnetic particles are treated, in particular hydrophobized, such that during a new interaction with non-magnetic ore particles, new ore magnetic particle agglomerations are formed. Accordingly, a high yield of ores can be obtained and the mine can be operated in an economical and environmentally friendly manner.
摘要:
The invention relates to a rail vehicle for driving operation on track systems with ballast permanent way. The invention is to effectively avoid or at least significantly reduce an agglomeration of snow and ice in cavities of the vehicle underfloor. For this purpose it is provided that the rail vehicle in the region of its underfloor comprises at least one flexible membrane which spans hollow spaces which are positioned open towards the track systems or support frame structures of the underfloor of the rail vehicle
摘要:
Dishwasher, in particular domestic dishwasher, comprising a crockery basket which comprises a, in particular rotating, washing arm which is supplied with water by a water transferring pipe (1), wherein the water transferring pipe (1) is connected with the crockery basket and coupling means (2) are provided for hydraulic coupling of the water transferring pipe (1) to a water supply pipe (3) which is arranged in a wall or in a corner of the washing cavity, wherein the crockery basket is adjustable in its height relatively to the washing cavity of the dishwasher and the coupling means (2) allow hydraulic coupling of the water transferring pipe (1) to the water supply pipe (3) in at least two different height positions of the crockery basket, wherein the coupling means (2) comprise a bellow that is elastically deformable, wherein the bellow (4) is connected to the water supply pipe (3) and comprises an open axial end (5) that is adapted for releasable sealing contact with the water transferring pipe (1), wherein the bellow (4) has a sealing surface (6) at its open axial end (5) which cooperates with at least one sealing surface (7′, 7″) of an adapter element (8) which is provided at the corresponding end of the water transferring pipe (1), and wherein the adapter element (8) has at least two sealing surfaces (7′, 7″) for different height positions of the crockery basket.