Abstract: In the automatic welding method and device for prestressed tubular piles provided in the present application, which is applied in welding equipment, a detection is conducted around a connection position between prestressed tubular piles and a position of a target welding seam is obtained. Then the target welding seam is welded around the prestressed tubular piles according to the position of the target welding seam.

Abstract: The present invention provides a method of thermal management for a power train. The temperature power source of the powertrain is continuously monitored. A heating request of is generated if the temperature of the power source falls below a threshold. In response to the heating request, the power controller of the powertrain generates a three-phase current to operate the asynchronous electric motor of the powertrain. The thermal energy therefore generated by the asynchronous electric motor is then provided to the power source for heating up the power source.

Abstract: A molten metal processing device including a molten metal containment structure for reception and transport of molten metal along a longitudinal length thereof. The device further includes a cooling unit for the containment structure including a cooling channel for passage of a liquid medium therein, and an ultrasonic probe disposed in relation to the cooling channel such that ultrasonic waves are coupled through the liquid medium in the cooling channel and through the molten metal containment structure into the molten metal.

Abstract: A molten metal processing device including a molten metal containment structure for reception and transport of molten metal along a longitudinal length thereof. The device further includes a cooling unit for the containment structure including a cooling channel for passage of a liquid medium therein, and an ultrasonic probe disposed in relation to the cooling channel such that ultrasonic waves are coupled through the liquid medium in the cooling channel and through the molten metal containment structure into the molten metal.

Abstract: A molten metal processing device including a molten metal containment structure for reception and transport of molten metal along a longitudinal length thereof. The device further includes a cooling unit for the containment structure including a cooling channel for passage of a liquid medium therein, and an ultrasonic probe disposed in relation to the cooling channel such that ultrasonic waves are coupled through the liquid medium in the cooling channel and through the molten metal containment structure into the molten metal.

Abstract: A molten metal processing device including a molten metal containment structure for reception and transport of molten metal along a longitudinal length thereof. The device further includes a cooling unit for the containment structure including a cooling channel for passage of a liquid medium therein, and an ultrasonic probe disposed in relation to the cooling channel such that ultrasonic waves are coupled through the liquid medium in the cooling channel and through the molten metal containment structure into the molten metal.

Abstract: There is provided a method for modifying a polyimide membrane comprising the step of exposing the polyimide membrane to a surface modification compound in a vapour phase, said surface modification compound having at least one amine group, to thereby modify the polyimide membrane.

Abstract: The present invention deals with a process for treating a polyimide comprising exposing said polyimide to a compound selected from the group consisting of dendrimers, hyperbranched polymers and mixtures thereof. The polyimide may be in the form of a membrane and the membrane, after treatment according to the process of the invention, may be suitable for use in a membrane-based separation technique, for example gas separation, filtration, microfiltration, ultrafiltration, reverse osmosis or pervaporation. The membrane may for example be suitable for separation of gas and hydrocarbon mixtures including mixtures of H2/N2, H2/CO2, He/N2, CO2/CH4, and C2–C4 hydrocarbon mixtures.

Abstract: The present invention deals with a process for treating a polyimide comprising exposing said polyimide to a compound selected from the group consisting of dendrimers, hyperbranched polymers and mixtures thereof. The polyimide may be in the form of a membrane and the membrane, after treatment according to the process of the invention, may be suitable for use in a membrane-based separation technique, for example gas separation, filtration, microfiltration, ultrafiltration, reverse osmosis or pervaporation. The membrane may for example be suitable for separation of gas and hydrocarbon mixtures including mixtures of H2/N2, H2/CO2, He/N2, CO2/CH4, and C2-C4 hydrocarbon mixtures.

Abstract: A hair treatment applicator head includes first and second elongate body members. That first body member has a handle portion at a first end and a first treatment surface proximate a second end. The treatment surface bearing a fluid absorbent material. The second body member has a flange for engagement with a treatment fluid supply at a first end and a second treatment surface proximate a second end. A fluid path extends through the body from proximate the flange to a plurality of apertures on the second treatment surface. The first and second elements are hingeably engaged to allow the first and second treatment surfaces to be brought into proximity each other.

Abstract: Apparatus for cleaning the recording/playing head, capstan and pinch roller of cassette-type audio recording/playing machine comprises a cassette-type housing; a first cleaner rotatably and slidably mounted in the housing; a drive for simultaneously rotating and sliding the first cleaner to clean the peripheral surface of the recording/playing head and at least a second cleaner pivotably mounted in the housing for simultaneously contacting and cleaning the capstan and pinch roller of the audio recording/playing machine.