Abstract: The application provides a method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma, including: using a mixture of hydrogen rich gas and argon gas to generate hydrogen plasma for denitrification of molten steel during at least one of arc furnace smelting, ladle refining, VOD refining, and RH refining. The method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma provided in the application can effectively remove nitrogen from the molten steel by spraying a mixture of argon gas and hydrogen rich gas into the molten steel through a hollow electrode and plasma torch, reducing electrode consumption and electricity consumption per ton steel, and also reducing arc radiation heat loss, improving heating rate, thereby shortening smelting time and reducing production costs.

Abstract: The application provides a method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma, including: using a mixture of hydrogen rich gas and argon gas to generate hydrogen plasma for denitrification of molten steel during at least one of arc furnace smelting, ladle refining, VOD refining, and RH refining. The method for controlling nitrogen in steelmaking by spraying hydrogen containing plasma provided in the application can effectively remove nitrogen from the molten steel by spraying a mixture of argon gas and hydrogen rich gas into the molten steel through a hollow electrode and plasma torch, reducing electrode consumption and electricity consumption per ton steel, and also reducing arc radiation heat loss, improving heating rate, thereby shortening smelting time and reducing production costs.

Abstract: The present invention provides a movable point frog. In this application, quasi-continuity of rails is achieved at the frog, so that a gap in the frog is eliminated, vibration and noise are reduced, and transverse impact of wheels is eliminated. Guard rails do not need to be disposed. The frog itself does not limit the speed of a train running on a main line and a branch line. Therefore, the train running on the main line can pass through the frog without reducing the speed. A relatively small curve radius and a relatively large frog angle may be adopted for the branch line. Compared with integrally cast frog equipment in the prior art, all the components in this application are detachably connected, and therefore can be simply mounted, easily maintained, and produced in batch.

Abstract: A ground-illuminating lamp for a vehicle rearview mirror comprises a remote controller (2), a control circuit (1) and an illuminating lamp (3), wherein the remote controller (2) sends out instructions for turning on or turning off the illuminating lamp (3) to the control circuit (1) according to user's requirements, the control circuit (1) receives the instructions and controls the illuminating lamp (3) to turn on or turn off the illumination, and the illuminating lamp (3) is mounted at the lower portion of the rearview mirror.

Abstract: An air-blowing device for automobile back windscreen (10) comprises a control circuit (1), an air compressor (2), an air duct (3) and an air nozzle (4). The control circuit (1) controls the air compressor (2) to work or not to work, and an air vent of the air compressor (2) is connected with the air nozzle (4) through the air duct (3), said air nozzle (4) being installed on the automobile and facing towards the back windscreen (10). The device can be used in various automobiles to clear mist and water-droplets from the back windscreen (10) and make driver sight lines clearer.

Abstract: A ground-illuminating lamp for a vehicle rearview minor comprises a remote controller (2), a control circuit (1) and an illuminating lamp (3), wherein the remote controller (2) sends out instructions for turning on or turning off the illuminating lamp (3) to the control circuit (1) according to user's requirements, the control circuit (1) receives the instructions and controls the illuminating lamp (3) to turn on or turn off the illumination, and the illuminating lamp (3) is mounted at the lower portion of the rearview minor.

Abstract: A blow device for rear view mirror of a vehicle includes a control circuit (1), an air compressor (2), an air duct (3) and a blow nozzle (4). The operation of the air compressor (2) is controlled by the control circuit (1). The air outlet of the air compressor (2) is connected to the blow nozzle (4) via the air duct (3). The blow nozzle (4) is mounted on the vehicle facing the rear view mirror (10) and the side window (20) for removing the fog and water droplets on there. A sensor (7), as well as a compression frequency adjuster (6) and/or an air exhausting frequency adjuster (9) are added to the blow device. The sensor (7) is used to detect the swing frequency of the wiper (8) as a detected signal. The control circuit (1) processes the detected signal to generate an adjusting signal and then transmits the adjusting signal to the compression frequency adjuster (6) and/or the air exhausting frequency adjuster (9) respectively.

Abstract: A method of filtering a digital image is described. A filter kernel is applied to a respective pixel in a set of pixels to smooth noise and preserve spatial frequencies associated with image edges in the digital image in accordance with a first filtering parameter. The filter kernel is a function of the respective pixel and has a closed form for the respective pixel. The filter kernel includes contributions from a first set of neighboring pixels and has a content-dependent normalization such that a sum of elements in the filter kernel equals a substantially fixed value.

Abstract: A method of filtering a digital image is described. A filter kernel is applied to a respective pixel in a set of pixels to smooth noise and preserve spatial frequencies associated with image edges in the digital image in accordance with a first filtering parameter. The filter kernel is a function of the respective pixel and has a closed form for the respective pixel. The filter kernel includes contributions from a first set of neighboring pixels and has a content-dependent normalization such that a sum of elements in the filter kernel equals a substantially fixed value.