The major findings of our meta-analysis reveal that the aberrant expression of VEGF may correspond to shorter overall survival of patients with DLBCL, revealing that VEGF expression could be an unbiased prognostic determinant in the management of DLBCL patients.
Analyzes bucket hydraulic system of hydraulic excavator by fault tree analysis. According to logical relationship of hydraulic system structure, draws fault tree, finishes qualitative and quantitative analysis .Divides the minimum cut sets. Calculates the reliability of whole system to find the weakest components. Puts forward ways to increase the reliability on basis of oil pipe.
Analysis of the electro hydraulic grab's not tightly closed fault were conducted by using fault tree, through analyzing of the working principle, establishing the fault tree, gradual layered investigation, so as to quickly find the source of the fault and repair the grab. Practices have proved that the use of fault tree analysis method can help operators find fault sources quickly, improve work efficiency and save working time, and this technology has high application value in practical work.
This paper introduces a electro-hydraulic servo and horizontal stabilized platform driven by hydraulic cylinder. This platform can make the table maintain horizontal. The structural analysis, kinematics analysis and workspace analysis were carried out to the platform. Through establishing kinematics model and Using MATLAB software, kinematics simulation computation is given to the mechanism.
A new method approach is presented to solve isomorphism identification of kinematic chain topology graphs. Kinematic chain topology graphs are depicted with loop-code based on the characteristic of kinematic chain topology graphs. The number of binary links in the limbs of topology graphs is arranged in group according to links with multi points of connection.Although the order of limbs in the groups and the order of links with multi points of connection outside the groups can change, the planar message of topology graphs can not change. Thereby forming loop-code.This representation is straightforward and not affected when drawing modes and labeling ways change in topology graphs.
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