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184 results about "Factor XIa" patented technology

Factor XI or plasma thromboplastin antecedent is the zymogen form of factor XIa, one of the enzymes of the coagulation cascade. Like many other coagulation factors, it is a serine protease.

Methods for Treating Bleeding Disorders

A method of factor XI-dependent blood coagulation enhancement in a subject in need of enhanced blood coagulation comprising administering a therapeutically effective amount of a composition comprising a non-anticoagulant sulfated polysaccharide (NASP) to the subject. A method of factor XI-dependent blood coagulation enhancement in a subject in need of enhanced blood coagulation comprising: (i) selecting a subject that is not deficient for factor XI; and (ii) administering a therapeutically effective amount of a composition comprising a non-anticoagulant sulfated polysaccharide (NASP) to the subject, wherein the NASP enhances blood coagulation in a factor XI-dependent manner. A method of identifying a non-anticoagulant sulfated polysaccharide (NASP) which is capable of enhancing blood coagulation in dependence on FXI, the method comprising: a) combining a blood or plasma sample comprising activation competent FXI with a composition comprising a sulfated polysaccharide and measuring the clotting or thrombin generation parameters of the blood or plasma sample; b) combining a corresponding blood or plasma sample deficient in activation competent FXI with a composition comprising the sulfated polysaccharide and measuring the clotting or thrombin generation parameters of the blood or plasma sample; and c) comparing the clotting or thrombin generation parameters of the blood or plasma samples as determined in steps (a) and (b) with each other, wherein a decrease in the clotting time of the blood sample or an increase in peak thrombin or decrease in peak time of the plasma sample comprising activation competent FXI compared to the clotting time of the blood sample or peak thrombin or peak time of the plasma sample deficient in activation competent FXI is indicative of a NASP which is capable of enhancing blood coagulation in dependence on FXI.
Owner:TAKEDA PHARMA CO LTD

Offshore doubly fed motor stator winding turn-to-turn short circuit early fault identification method

The invention relates to an offshore doubly fed motor stator winding turn-to-turn short circuit early fault identification method, and is used for judging the doubly fed motor stator winding turn-to-turn short circuit and determining the phase of the turn-to-turn short circuit. The method comprises the following steps that 1) the three-phase signals of an offshore doubly fed motor under fault identification are acquired, including the stator three-phase voltage, the rotor three-phase voltage, the stator three-phase current, the rotor three-phase current and the rotor rotating speed; 2) the three-phase signals are converted to a dq axis coordinate system, the motor parameters are acquired, then the three-phase signals are converted to an alphabeta axis coordinate system, the estimated stator current is acquired through an observer, and the estimated current difference is calculated and decomposed so that a fault severity factor xi is obtained; and 3) when the amplitude of the fault severity factor xi caused by the turn-to-turn short circuit fault reaches the fault early warning value, the stator winding turn-to-turn short circuit fault occurs on the offshore doubly fed motor under fault identification. Compared with the methods in the prior art, the offshore doubly fed motor stator winding turn-to-turn short circuit early fault identification method has the advantages that the fault phase can be reliably located and the robustness is high.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

Local curved surface change factor based scattered point cloud data compaction processing method

InactiveCN104616349AImprove search efficiencyOvercoming the results of reduced efficiencyImage generation3D modellingFactor basePoint cloud
The invention discloses a local curved surface change factor based scattered point cloud data compaction processing method. The local curved surface change factor based scattered point cloud data compaction processing method comprises the steps of 1 reading measured point cloud data, 2 calculating a central point of a point cloud, 3 searching dynamic K neighborhood points of the central point based on cubic grids and accordingly establishing the topological relation of scattered point cloud, 4 adopting a variance component method to calculate curved surface change factors of a k neighborhood of the central point, 5 determining the compaction rate of each cubic grid in the k neighborhood of the central point and performing even compaction in within a k neighborhood range. The topological relation of the scattered point cloud is established by establishing the dynamic K neighborhood point information of the scattered point cloud. Complicated curvature calculation is replaced by the curved surface change factors. The compaction ratio is adjusted according to the curved surface change factors Xi, even compaction within the k neighborhood range is achieved, the detail characteristic of high curvature can be protected, and planar characteristic of low curvature is also protected when the compaction degree is high. Point cloud data processing and curved surface reconstruction efficiency and accuracy are improved.
Owner:TIANJIN UNIV
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