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Development strategies of commercial aero engine in European Countries and the United States engine companies were mainly studied in three aspects which were industry, product and technology. In the aspect of industry, the strategies of coordinated development for military, civil and gas turbine engines were expounded emphatically. In the aspect of product, accelerating the development of derivative...
The vibrancies of floating steel-pipelines on sea was analyzed by the inherent vibrancies character analysis method; a finite-element model was established to simulate the lateral bending vibration of the pipelines by ADINA software, the conclusion was obtained that the lateral bending vibration of pipelines was able to meet with the requirements of pipelines' function on the 4 class sea-conditions.
The finite element (FEM) is used to analyze and study uncompressed viscous turbulent jet flow field in nozzles with different diameters. Computation results with FEM are accordant with the information. When the import velocity and the other boundary conditions are identical, the export velocity of small diameter nozzle is larger than that of large diameter nozzle. This paper provides a new method...
When human Bel-7402 hepatocarcinoma cell line grew in a medium containing 10 -4 M dimethyl-4,4 -dimethoxy-5,6,5 ,6 -dimethylenedioxybiphynyl-2,2 -dicarbox ylate (DDB), the secretion of α-fetoprotein (AFP) was significantly lower than the control cells, whereas the albumin (ALB) secretion was markedly higher. The activity of γ-glutamultranspepeidase (γ-GT) in DDB-treated cells markedly...
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