Abstract: In a method for repairing damaged rotor blades (17) of the turbine part (11) of a gas turbine (10), at least the surface of the rotor blades (17) which are seated in the turbine part (11) and surrounded by a hot-gas casing is treated from the outside through a suitable opening (23).

Abstract: In a process for the hydroformylation of ethylenically unsaturated compounds, at least one complex of a metal of transition group VIII. with at least one phosphorus-, arsenic- or antimony-containing compound as ligand is used as hydroformylation catalyst, where the compound used as ligand in each case comprises two groups which comprise a P, As or Sb atom and at least two further hetero atoms and are bound to a xanthene-like molecular framework. New compounds of this type and catalysts which comprise at least one complex of a metal of transition group VIII. with at least one such compound as ligand are also provided.

Abstract: Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Abstract: In a method for the nondestructive quality testing of a thermocouple (10) which can be used in particular at high temperatures and/or under high levels of vibration, which thermocouple (10) comprises at least two wires (13, 14) which run substantially parallel to one another in one plane, are connected to one another at their ends by a welded joint (15), are surrounded by a hermetically sealed sheath (11) and inside the sheath (11) are embedded in insulation (16, 17) comprising a compacted powder, simple and reliable assessment is achieved by the fact that the X-radiation is passed through the thermocouple (10) perpendicular to the plane of the wires (13, 14) and an X-ray image is taken, that the position of the wires (13, 14) in the vicinity of the welded joint (15) is determined from the X-ray image, and that the quality of the thermocouple (10) is established from the position of the wires (13, 14) in the vicinity of the welded joint (15).

Abstract: Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Abstract: A master tool for a reception station on a press for shaping sheets of paper or cardboard, comprising a moving slide and a number of bars (1) adapted to form a grid for non-stop reception of blanks and a bottom separating tool comprising two boards (4, 5) adjustable on two transverse beams (9, 10) of the moving slide, the beams having top edges having the same profile, the profile of the top edge comprising a number of serrated recesses in shape matching the cross-section of the bars (1), the serrated recesses being adjusted to correspond to the transverse positions of the openings in the bottom blank-separating tool.

Abstract: Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Abstract: A liquid desiccant air conditioner includes an absorption air conditioner and a liquid desiccant dehumidifier.

Abstract: The present invention provides a liquid desiccant air conditioner including an absorption air conditioner and a liquid desiccant dehumidifier. The dehumidifier includes a liquid desiccant absorber for absorbing moisture contained in ambient air entering the dehumidifier and passing through the desiccant absorber. A boiler is provided for boiling partially preheated dilute liquid desiccant to evaporate moisture to reconstitute the liquid desiccant into concentrated liquid desiccant. In a preferred embodiment, a first heat exchanger fluidly communicates with the desiccant absorber and a second heat exchanger. The first heat exchanger is operable to transfer heat from the concentrated liquid desiccant to the dilute liquid desiccant directed to the first heat exchanger from the desiccant absorber to raise the temperature of the dilute liquid desiccant to a first temperature.

Abstract: A thermal neutron shield (520) for integrated circuits (511-515) deters absorption of thermal neutrons by circuit constituents to form unstable isotopes with subsequent decay which generates bursts of charge which may upset of stored charge and create soft errors. The shielding may be either at the integrated circuit level (such as a layer on insulation or in the filler of plastic packaging material) or at the board level (such as a filler or film on a container wall).

Abstract: A liquid desiccant air conditioner includes an absorption air conditioner and a liquid desiccant dehumidifier.

Abstract: A liquid desiccant air conditioner includes an absorption air conditioner and a liquid desiccant dehumidifier. The dehumidifier includes a liquid desiccant absorber for absorbing moisture contained in ambient air entering the dehumidifier, a boiler for boiling dilute liquid desiccant from the absorber to evaporate moisture and reconstitute the dilute liquid desiccant into concentrated liquid desiccant. A first heat exchanger receives dilute liquid desiccant from the absorber and is operative to heat the dilute liquid desiccant prior to passage to a condenser that receives steam from the boiler and sensibly heats the dilute liquid desiccant therein without direct contact with air, thereby eliminating desiccant carryover from the condenser. A second heat exchanger is operable to transfer heat from concentrated liquid desiccant received from the boiler to preheated dilute liquid desiccant received from the condenser prior to entry into the boiler.

Abstract: A liquid desiccant dehumidifier includes a liquid desiccant absorber arranged to receive concentrated liquid desiccant and absorb moisture contained in ambient air passed through the absorber thereby diluting the liquid desiccant. A first heat exchanger is operative to heat dilute liquid desiccant received from the desiccant absorber prior to passage to a boiler that evaporates moisture from the diluted liquid desiccant to create steam and reconstitute the desiccant into a concentrated liquid desiccant. Dilute liquid desiccant from the first heat exchanger first passes to a condenser that receives steam from the boiler and sensibly heats the dilute liquid desiccant to a higher second temperature without direct exposure to steam or air.

Abstract: In a method of brazing directionally solidified or monocrystalline components, the brazing deposit and the directionally solidified or monocrystalline component are moved through a heated zone. In this zone, the temperature applied by a heating system is greater than the liquidus temperature of the brazing alloy and less than the local incipient melting temperature of the component. A thermal gradient is applied between the component and the brazing deposit.

Abstract: This invention comprises a process and apparatus for producing purified drinking water from surface or ground fresh water sources using no chemical pre-treatment or coagulants, by usage of a positively-charged filtration media to attract the typically negatively-charged suspended solids present in the water source. The process, which can be portable, includes a filtration system having a filtration/recirculation/backwash component and a disinfection step. The process further includes a system controller which receives electrical signals from float controls to control the filtration, recirculation, and backwash steps. This process produces drinking water which meets or exceeds the guidelines set by the World Health Organization for turbidity and microbiological content.

Abstract: Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Abstract: This invention comprises a process and apparatus for producing purified drinking water from surface or ground fresh water sources using no chemical pretreatment or coagulants, by usage of a positively-charged filtration media to attract the typically negatively-charged suspended solids present in the water source. The process, which can be portable, includes a filtration system having a filtration/recirulcation/backwash component and a disinfection step. The process further includes a system controller which receives electrical signals from float controls to control the filtration, recirculation, and backwash steps. This process produces drinking water which meets or exceeds the guidelines set by the World Health Organization for turbidity and microbiological content.

Abstract: The method serves to produce a material based on a doped intermetallic compound. In carrying out the method, at least two differently doped powders each based on the intermetallic compound are selected. One of the two powders predominantly has coarse-grained particles. On the other hand, another powder is formed from comparatively fine-grained particles composed of a material having a lower creep strength but a higher ductility than the material of the coarse-grained powder. The at least two powders are mixed with one another in a ratio serving to establish a desired mixed microstructure and then hot-compacted and heat-treated to form the material.Material produced by this method is suitable for components which are exposed to high mechanical loads at high temperatures, such as, in particular, gas-turbine blades or turbine wheels of turbo chargers.