Abstract:
A venous graft for replacement of a section of an artery and methods of making the graft. The graft comprises a flexible, resilient, generally tubular external support and a vein segment carried within and having an ablumenal surface in contact with and supported by the tubular support, the venous graft being capable of resilient radial expansion in a manner mimicking the radial compliance properties of an artery.
Abstract:
Described is an apparatus for simultaneously sterilizing a large number of packs (1) by means of a gas mixture containing hydrogen peroxide and a carrier gas. The apparatus comprises: supply lines (4) for the carrier gas and for hydrogen peroxide (5), a device (21) for evaporating hydrogen peroxide by heat and mixing it into the carrier gas, supply lines (4, 5) and a substantially horizontally extending distributor line (6, 22) and nozzles (3) which are arranged above the respective pack (1) and are connected to the distributor line (6, 22). In order simultaneously to provide, with a simplification in the apparatus, measures by means of which the concentration of the hydrogen peroxide at all nozzles is maintained equal over the plurality of packs at a given time, the invention provides that the distributor line (6, 22) from the upstream location (23) of the in-feed of the conditioned gas mixture to the location (9) of entry upstream of the respective nozzle (3) is in the form of a tubular body including a longitudinal passage, with at least one substantially tubular heating cartridge (18) extending over the length of the tubular body and distributed measurement points (12) and that the heating cartridge (18) is divided into at least two portions and can be heated controlledly by a supply of electrical energy in such a way that the temperature at the outer ends of the tubular body (6) differs from the temperature at the center.
Abstract:
A method of transmitting clock signals (CS) in a synchronous digital communications network and a method of synchronizing clock generators (SSU) or network elements (SEC) wherein signaling of the clock quality is effected by phase-modulating the clock signal (CS). The clock signal (CS) is transmitted and received through simple clock interfaces (T4, CLO; T3, CLI) and contains a phase modulation characteristic of the clock quality. The phase modulation is detected and quality information is derived therefrom. Based on the quality information, the clock generator (SSU) or the network element (SEC) are synchronized to the clock signal. Also disclosed are a clock generator (SSU) and a network element (SEC; NE) for carrying out the two methods.
Abstract:
A compiler for compiling source code whereby the compiled source code is optimized by performing outer loop unrolling (a generalization of “unroll and jam” on selected loop nests. The present invention allows any arbitrarily deep loop nests with non-varying loop bounds to be properly unrolled even in the presence of imperfectly nested code. This is accomplished for two-deep loop nests by transforming the code into multiple adjacent loop nests. In the transformed code, the imperfect code is isolated so that one of the adjacent loops nests has none, and thus can be unrolled and jammed. For three-deep or greater loop nests, the process is repeated recursively from the outer-most loop. The present invention also allows outer loop unrolling for two-deep loop nests with convex bounds, even with the presence of imperfectly nested code. This is accomplished by identifying strips of code which do not contain imperfectly nested code. An unroll and jam operation is executed for the identified strips. Code falling outside of the identified strips as well as wind-down code, are executed according to their original, untransformed order.
Abstract:
The invention relates to compounds of formula I and to their physiologically acceptable salts and solvates which act as phosphodiesterse VII inhibitors and are thus useful for the treatment of allergic disorders, asthma, chronic bronchitis, atopic dermatitis, psoriasis and other skin disorders, inflammatory disorders, autoimmune diseases, rheumatoid arthritis, multiple sclerosis, Crohn's disease, diabetes mellitus or ulcerative colitis, osteoporosis, transplant rejection reactions, cachexia, tumor growth, tumor metastases, sepsis, memory disturbances, atherosclerosis and AIDS.
Abstract:
A synchronization device for a synchronous digital message transmission system producing a synchronous output signal including successive transport modules synchronized to a frame clock from a digital input signal. The synchronization device includes a receiver unit for receiving the input signal, a packet assembly device for packaging the input signal into subassemblies of the transport modules, a buffer memory, a writer for writing data bits of the input signal out of the subassemblies into the buffer memory with a write clock, a reader, for reading data bits out of the buffer memory with a read clock in order to form the output signal, and a sending unit (SO) for sending synchronous output signals. The effective bit rate of the subassemblies compared to the standardized value is either lowered or raised by selecting the write clock lower than the read clock.
Abstract:
The present invention relates to a process for establishing point-to-multipoint connections (A14, A33, A34) and multipoint-to-point connections (B14, B15, B35) in a coupling field comprised of a number of stages (I, II, III), each with a number of switching modules (11-15, 21-25, 31-35). To that end, when there are switching modules (21-25) in at least one stage (II), and if, depending on their type, these switching modules are capable of simultaneously splitting point-to-multipoint connections (A14, A33, A34) and of coupling together multipoint-to-point connections (B14, B15, B35), the proposition is made to connect point-to-multipoint connections (A14, A33, A34) in switching modules (25) in which more inputs than outputs are already loaded with connections and to connect multipoint-to-point connections (B14, B15, B35) by switching modules (24) in which more outputs than inputs are already loaded with connections.
Abstract:
The network elements NE1, . . . , NE6 of a synchronous digital communications system must be synchronized with each other without the possibility of clock loops occurring. A network node NODE contains network elements NE1, . . . , NE6 and a central clock generator SASE. The network elements transmit clock signals 2M to the clock generator, which contain a clock of a message signal STM-N and a quality indicator (SSM) contained in the message signal which reflects the accuracy of the clock. The clock generator selects one of the clock signals 2M as the reference clock REF and informs the control installation STE which of the clock signals it has selected and the degree of accuracy of this clock signal. On the basis of this message STAT the control installation gives instructions ANW to the network elements with respect to the quality indicator which the network elements are to transmit to their outputs.
Abstract:
In synchronous digital communication systems using a synchronization quality marker (SSM), timing loops can be created. To avoid such timing loops, a synchronous digital communication system is provided having network elements (NE11, . . . , NE33) in which two classes (top, bottom) are defined for interface units (S.sub.1, . . . , S.sub.x, . . . , S.sub.X+i).