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30 results about "Soundness" patented technology

In mathematical logic, a logical system has the soundness property if and only if every formula that can be proved in the system is logically valid with respect to the semantics of the system. The converse of soundness is known as completeness. In most cases, this comes down to its rules having the property of preserving truth.

Seal coat spreading facility and spreading method

The invention especially relates to a seal coat spreading facility and spreading method, belonging to the technical field of road construction machinery. The seal coat spreading facility comprises a car body and is characterized in that a water spraying device, an interfacial agent sprinkling device, an asphalt sprinkling device, a stone spreading device and a protective agent sprinkling device are arranged on the car body. The spreading method comprises the following steps: successively spraying water, an interfacial agent and a first layer of asphalt onto a pavement; spreading stone and rolling the stone; sprinkling a second layer or multiple layers of asphalt onto the stone; and sprinkling a protective agent onto the second layer of asphalt. The invention has the beneficial effects that the spreading facility and spreading method have good versatility, can realize synchronous implementation of a plurality of construction steps, guarantee stable soundness and anti-skid capability of the pavement, are accurate in control and uniform in spreading and ensure beautiful appearance of the pavement; and the spreading facility is simple in structure, convenient to use, easy to maintain and adaptive to pavements of various widths, so seal coat construction efficiency and quality are substantially improved.
Owner:SHANDONG DASHAN ROAD & BRIDGE ENG

Ultrasonic permeation enhancing preparation method for preserved fresh flower and preserved fresh flower

The invention relates to an ultrasonic permeation enhancing preparation method for a preserved fresh flower and a preserved fresh flower and belongs to the technical field of flowering branch chemicalpreservation. The ultrasonic permeation enhancing preparation method for the preserved fresh flower comprises the following steps of conducting decolorizing treatment on a fresh cut flower, then immersing the fresh cut flower into a liquid phase substitute for ultrasonic treatment, and drying. According to the ultrasonic permeation enhancing preparation method for the preserved fresh flower, thethermal motion of substitute molecules and water molecules can be quickened by the cavitation effect and heat effect of ultrasonic, therefore the disadvantage can be overcome that the power of insideand outside diffusion of the moisture in the flower when replacement is conducted in the normal condition; meanwhile, micro channels are formed on the surface of petal tissues and macromolecules in the liquid phase substitute is promoted to permeate into the micro channels for moisture replacement, so that the shrinking degree of the petals is effectively reduced; moreover, all the components in the liquid phase substitute is uniformly distributed in cell tissues, so that the overall preserved fresh flower is uniformly dyed, the flexibility of the petals is good, the preserved fresh flower ismoist, soft and good in soundness and the appearance form of the fresh cut flower is largely kept.
Owner:HENAN UNIV OF SCI & TECH

Large-radius chamfered sleeper for ballastless track concrete crack control and its construction method

The invention provides a large-radius chamfer sleeper used for controlling concrete cracks of a ballastless track and a construction method. In the large-radius chamfer sleeper, (1), large-radius chamfers are used for the corners of the sleeper, the chamfer part is equivalent to a quarter of a circular platform, and the radius of the top of the circular platform is generally not less than 80mm; (2), crack-proof steel bars are arranged on the periphery of the sleeper, wherein the crack-proof steel bars can be arranged to form a closed loop along the outer side of the sleeper or to form loops only in certain ranges of the ends of the sleeper, and ribbed steel bars with nominal diameters being 14mm-20mm are utilized as the crack-proof steel bars; (3), when the grade of the carbonation environment effect is T2, the thicknesses of the protection layers of the crack-proof steel bars are 35mm, and when the grade of the carbonation environment effect is T3, the clear spacings between the crack-proof steel bars and the sleeper are 20mm-30mm; (4), during the construction of the large-radius chamfer sleeper, fixing position accuracy in the whole track bed and soundness of the crack-proof steel bars need to be guaranteed, and meanwhile, the crack-proof steel bars need to be separated from other steel bars.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY

Self-tapping trip bolt and its application

The invention discloses a self-taped plate-winding bolt and an application thereof. The bolt comprises a self-taped bolt tip, a partially hollow bolt body part and a steel-plate winding tail end provided with a smooth waist-shaped hole, wherein the interior of the self-taped plate-winding bolt is provided with a channel for a steel wine / French tack to pass through; a groove area of the tip end of the self-taped bolt is provided with a first through hole with smooth corners communicated with the channel inside the body part; a winding plate is provided with a second through hole communicated with the channel inside the body part; the first through hole and the second through hole are all belong to circular holes with smooth inlets and outlets or waist-shaped holes; the inner wall of the whole channel is smooth and complete. The self-taped plate-winding bolt has the advantages of preventing the steel wire / French tack from being fractured because of wearing and flection of tip after passing through the channel, and thereby prolonging the service life of the steel wire, enhancing the soundness and durability of an inner fixation system, and sufficiently reaching to enough healing time for internal fixed protective tissue in clinic; since the tip of the self-taped bolt is of a self-taped design, and a two-zone thread is designed on a screw rod, the bolt can be better embedded into the human bone, and a great fixing effect is obtained on the bone, so that it is ensured that the bolt can not be loosened and lose the fixing effect.
Owner:FOURTH MILITARY MEDICAL UNIVERSITY
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