Open image in new window Figure 2 Co-operative optimization design method for structure light-weight.
A light-weight design method with structural topology and size co-operative optimization for the force-performance-structure of complex structural parts is proposed, which can effectively obtain structure configuration and main feature sizes under multi-condition.
And the structural light-weight design optimization of static and dynamic performance of the part is realized through the co-operative optimization by integrating structural topology optimization and size optimization.
Based on the mapping relationship between the force-structure and performance-structure, a co-operative optimization design method for structure light-weight, based on structural topology optimization and size optimization, is proposed, for which the flowchart is shown in Figure 2 (Additional file 1).
Based on the proposed co-operative optimization method for light-weight design of complex structure parts in this paper, a gantry machining center bed part as an example is designed on its connection constraints, the main and sub-structure configuration and the feature sizes.
Congenital heart block in pregnancies in the presence of potential massive bleeding is best managed by a team, with meticulous pre-operative optimization.
In summary, congenital CHB in pregnancies in the presence of potential massive bleeding is best managed as a team, with meticulous pre-operative optimization.
Future studies are required to investigate whether post-operative optimization should be guided by ScvO2 or based on predefined DO2 values.
Another potential field of application for PPV is the intra-operative fluid optimization of patients undergoing high-risk surgery.
Nevertheless, a study using the Flotrac™/Vigileo™system for intra-operative hemodynamic optimization recently demonstrated a decreased complication rate and a reduced length of hospital stay [ 18].
Several studies have reported that peri-operative hemodynamic optimization (goal directed therapy (GDT)) guided by the pulmonary artery catheter may decrease morbidity and mortality [ 3- 7].
