The vascular graft with 4 mm diameter was prepared by casting one layer of polyurethane (PU) film onto the knitting tubular fabric as the reinforced support. The effects of different PU content and wall thickness on t...The vascular graft with 4 mm diameter was prepared by casting one layer of polyurethane (PU) film onto the knitting tubular fabric as the reinforced support. The effects of different PU content and wall thickness on the longitudinal mechanical properties of vascular graft were investigated. The breaking elongation, breaking force, initial modulus and breaking work were studied. The results showed that the longitudinal mechanical properties of vascular graft were enhanced as the content of polyurethane increased, which resulted from the combination of PU excellent elasticity and fabric preferable strength.展开更多
To discuss the hazard of migraine in acute phase and analgesic effect, acupoint selection features, method as well as mechanism of acupuncture; to put forward relevant questions, answer these questions, propose relati...To discuss the hazard of migraine in acute phase and analgesic effect, acupoint selection features, method as well as mechanism of acupuncture; to put forward relevant questions, answer these questions, propose relative specificity hypothesis on neural pathway of analgesic effect of acupoints in different nerve distribution areas（trigeminal nerve distribution area, occipital nerve distribution area, and spinal nerve distribution area） in treatment of migraine in acute phase, and analyze the deficiencies of hypothesis.展开更多
基金Supported by Education Depart ment of Hubei Province,China (No. Z200717001)
文摘The vascular graft with 4 mm diameter was prepared by casting one layer of polyurethane (PU) film onto the knitting tubular fabric as the reinforced support. The effects of different PU content and wall thickness on the longitudinal mechanical properties of vascular graft were investigated. The breaking elongation, breaking force, initial modulus and breaking work were studied. The results showed that the longitudinal mechanical properties of vascular graft were enhanced as the content of polyurethane increased, which resulted from the combination of PU excellent elasticity and fabric preferable strength.
文摘To discuss the hazard of migraine in acute phase and analgesic effect, acupoint selection features, method as well as mechanism of acupuncture; to put forward relevant questions, answer these questions, propose relative specificity hypothesis on neural pathway of analgesic effect of acupoints in different nerve distribution areas（trigeminal nerve distribution area, occipital nerve distribution area, and spinal nerve distribution area） in treatment of migraine in acute phase, and analyze the deficiencies of hypothesis.
