The complexes of poly(methacrylic acid-co-methyl methacrylate) network with poly(ethylene glycol) stabilized byhydrogen bonds were prepared. By introducing the poly(ethylene glycol), a large difference in storage modu...The complexes of poly(methacrylic acid-co-methyl methacrylate) network with poly(ethylene glycol) stabilized byhydrogen bonds were prepared. By introducing the poly(ethylene glycol), a large difference in storage modulus below andabove the glass transition temperature occurred and the complexes exhibited shape memory behaviors. The morphology ofcomplexes was studied by using DSC, WAXD, and DMA. The results indicate that the fixed phase of this kind of novelshape memory materials is the network, and the reversible phase is the amorphous state of PEG:PMAA complex phase. Theshape recoverability almost reaches 100%. This type of complexes can be regarded as a novel shape memory network.展开更多
Objective: To explore the relationship between Heart Meridian (HM) and cardiac function. Methods: Thirty rabbits with acute myocardial ischemia resulting from intravenous dripping of pituitrin was established. Electr...Objective: To explore the relationship between Heart Meridian (HM) and cardiac function. Methods: Thirty rabbits with acute myocardial ischemia resulting from intravenous dripping of pituitrin was established. Electroacupuncture (EA) on the HM and the Lung Meridian (LM) was applied, 3 points for each, and their change of end diastolic intraventricular pressure observed. Results: Obvious difference existed in the improvement of end diastolic intraventricular pressure on the HM and LM with EA treatment. The regulatory action of EA in HM on the cardiac function was significantly better than that of EA in LM. Conclusion: HM was closely related to the cardiac function.展开更多
文摘The complexes of poly(methacrylic acid-co-methyl methacrylate) network with poly(ethylene glycol) stabilized byhydrogen bonds were prepared. By introducing the poly(ethylene glycol), a large difference in storage modulus below andabove the glass transition temperature occurred and the complexes exhibited shape memory behaviors. The morphology ofcomplexes was studied by using DSC, WAXD, and DMA. The results indicate that the fixed phase of this kind of novelshape memory materials is the network, and the reversible phase is the amorphous state of PEG:PMAA complex phase. Theshape recoverability almost reaches 100%. This type of complexes can be regarded as a novel shape memory network.
文摘Objective: To explore the relationship between Heart Meridian (HM) and cardiac function. Methods: Thirty rabbits with acute myocardial ischemia resulting from intravenous dripping of pituitrin was established. Electroacupuncture (EA) on the HM and the Lung Meridian (LM) was applied, 3 points for each, and their change of end diastolic intraventricular pressure observed. Results: Obvious difference existed in the improvement of end diastolic intraventricular pressure on the HM and LM with EA treatment. The regulatory action of EA in HM on the cardiac function was significantly better than that of EA in LM. Conclusion: HM was closely related to the cardiac function.
