Abstract: The invention provides a reduction and fixation device for fracture correction, and relates to the technical field of orthopedic medical devices. The reduction and fixation device for fracture correction comprises: an aiming frame body including a fixation plate, a first rectangular frame, a support plate and a second rectangular frame, wherein two first sliding frames are slidingly arranged in the first rectangular frame, a first screw sleeve is arranged in the first sliding frame, upper and lower sides of the first screw sleeve are rotationally connected to an inner wall of the first sliding frame through a first rotating shaft, a second sliding frame is slidingly arranged in the second rectangular frame, a second screw sleeve is arranged in the second sliding frame, and front and rear sides of the second screw sleeve are rotationally connected to an inner wall of the second sliding frame through a second rotating shaft.

Abstract: A sound absorber is configured as a rectangular hexahedral box and forms a porous double-layer Helmholtz resonance sound absorbing structure, at the same time, the sound absorber in the form of a box forms a structural resonance sound absorbing device itself, and the first-order natural mode frequency of the device is identical to that of a wheel air chamber. When the box-type sound absorbing structure is assembled in a wheel, double functions of absorbing acoustic resonance of the wheel air chamber under the organic combination of Helmholtz resonance sound absorption and structural resonance sound absorption can be realized.

Abstract: Serving relevant advertisements using web browser bars. Web browser bars are small window widgets along with the borders of a browser and may be customized for a variety of purposes. In one embodiment, a customized Explorer bar is added as extension to Microsoft Internet Explorer web browser. While a user browses online using the browser, the content related advertisements may be shown on the bar. If the one of advertisements is selected in the bar, the detailed advertisement page will be shown on the browser page content window. The advertisements on the bar may be updated when the user browses different pages.

Abstract: A method and system that allows users to trade items over the Internet with dynamic pricing model is disclosed. The method and system enables a seller to post an item for sale with dynamic pricing settings. The dynamic pricing settings comprise price range, pricing algorithm and price-updating interval Over the item's listing period, the method and system automatically schedule to run the pricing algorithm to update the listing price every price-updating interval and the listing price is floating within the price range. A buyer can place an order on an item and finish the transaction at anytime before the end of the listing period. A buyer can trade directly online or set up an agent to conduct trading on behalf of the buyer.