Numerical Simulation for Damping-Controlled Deployment of Z-Folded Inflatable Tube

The damping-controlled deployment technology of flexible Z-folded inflatable tube is one of the key technologies of space inflatable structures.Constraint failure between couple nodes is proposed to simulate the damping-controlled deployment.And the equation of constraint failure is established.Inflation process of Z-folded tube is simulated with control volume method.Compared with uncontrolled method,it is indicated that the new method can effectively solve the disordered deployment problem of the slender Z-folded inflatable tube.By analyzing the displacement of the apical of the folded tube with different constraint forces during deployment process,the concept of effective constraint force is proposed.In the effective region of constraint force,the folded tube deploys with little retraction and fluctuation.Otherwise,The flexible folded tube would deploy disorderly or even cannot deploy.The simulation method and numerical results have a theoretical and instructive significance to the research on the space inflatable structures.

Comparative observation of the effect of electroacupuncture combined with heat-sensitive moxibustion and western medicine for premature ovarian failure

Objective To compare the clinical efficacy between electroacupuncture combined with heat-sensitive moxibustion and western medicine for treatment of premature ovarian failure. Methods Eighty patients were randomly divided into an electroacupuncture combined with heat-sensitive moxibustion group（group A, n=40） and a western medicine group（group B, n=40）. Zǐgōng（子宫 EX-CA 1）, Xuèhǎi（血海 SP 10）, Gānshū（肝俞 BL 18） and Shènshū（肾俞 BL 23） were selected in group A, and acupuncture combined with heat-sensitive moxibustion were carried out. Climen was taken orally in group B. The score changes of menstrual cycle, tidal fever and sweatiness, emotional excitement, soreness and weakness of waist and knees, dizziness and tinnitus, as well as the cured and markedly effective rate of the patients in the two groups before and after two courses of treatment were compared. Results The cured and markedly effective rate of group A was 72.5%（29/40）, which was superior to that of group B（37.5%, 15/40）（ P〈0.05）. The symptom scores were improved significantly in the two groups after treatment（all P〈0.05）, and the improvement in group A was superior to that in group B（all P〈0.05）. Conclusion The efficacy of electroacupuncture combined with heat-sensitive moxibustion is superior to that of conventional western medicine in treatment of premature ovarian failure.