Abstract: The present invention relates to a method and an auxiliary device for precision positioning of welded type nozzles. The auxiliary device for precision positioning of welded type nozzles includes a plurality of alignment tips and an alignment bar. Each alignment tip is connected to a welding adapter and extends a distance. The alignment bar is combined with the alignment tips so that first positioning portions of the alignment tips are aligned with a plurality of second positioning portions of the alignment bar, and after the alignment bar is combined with the alignment tips, a correction distance between an end surface of the alignment bar and a center line of a main pipe header in a longitudinal direction is larger than a length of an assembled nozzle after a nozzle tip is combined with the corresponding welding adapter. In this way, the geometric positions of the nozzles can be accurately corrected.

Abstract: The present invention relates to a catalyst based on ruthenium complexes and to a process for the asymmetric epoxidation of olefins using catalysts based on ruthenium complexes.

Abstract: The present invention relates to a catalyst based on ruthenium complexes and to a process for the asymmetric epoxidation of olefins using catalysts based on ruthenium complexes.

Abstract: The present invention relates to a process for the epoxidation of olefins using catalysts based on ruthenium complexes in the presence of hydrogen peroxide.

Abstract: This invention is the special sole construction, comprising an upper sole, an internal suspension support, a lower sole, a chamber and a U-support. It is used for the assembly of any shoe construction or footwear. The invention will aid in relief of pains arising from upward stroke against the heel of the foot from the heel of the shoe and generated during walking and standing with a heel shoe. The invention is to transmit the upward stroke from the heel of the shoe to the whole area of the sole of the foot and NOT JUST TO THE HEEL OF THE FOOT; and therefore minimizes and even eliminates the upward stroke against the heel of the foot in such that the wearer of the invention experiences the upward stroke from the heel of the shoe as if he wears the shoe without the heel. Finally, the invention helps prevent ankle pain, knee pain, hip pain and lower back pain.

Abstract: A speaker includes a main housing, a pair of extension housings extending telescopically from respective opposed ends of the main housing and each having two speaker drivers therein that are concealed by the main housing when the extension housings are retracted and exposed when the extension housings are extended.

Abstract: The present invention relates to a catalyst based on ruthenium complexes and to a process for the asymmetric epoxidation of olefins using catalysts based on ruthenium complexes.

Abstract: The present invention relates to an input/output operating device being installed onto the panel of a computer system, and such panel having a display element and at least one output element, and a converting interface being disposed at the rear side of the panel. The converting interface connects to a display element and input element via circuits, and the converting interface has a compatible connecting port that can be connected to the display element, input element, and the communication interface such as I2C and RS-232, etc., so that it connects to the computer system. The user can operate the input element and display element operating directly through the panel and needs not to use externally connected operating element and monitor. It is applicable to any computer system that has such communication interface, and save the hardware development cost.