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神经网络优化膳食营养补充剂胶囊支架3D打印工艺 被引量:1
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作者 陈虹竹 张良 +6 位作者 姚佳 胡小佳 刘倩楠 刘伟 孙钦秀 胡宏海 刘书成 《农业工程学报》 EI CAS CSCD 北大核心 2021年第4期18-23,共6页
为了确定熔融沉积成型3D打印技术制备个性化膳食营养补充剂胶囊支架的工艺条件,打印9通道聚乳酸(Polylactic Acid,PLA)胶囊支架结构,采用Box-Behnken设计,以支架通道的面积均方误差(Mean-Square Error,MSE)作为响应指标,通过神经网络模... 为了确定熔融沉积成型3D打印技术制备个性化膳食营养补充剂胶囊支架的工艺条件,打印9通道聚乳酸(Polylactic Acid,PLA)胶囊支架结构,采用Box-Behnken设计,以支架通道的面积均方误差(Mean-Square Error,MSE)作为响应指标,通过神经网络模型模拟温度、打印头孔径和速度3个因素对胶囊支架打印效果的影响。结果表明:3×4×1结构3层神经网络模型能够较好拟合3D打印过程(R2=0.998),当孔径为0.3 mm时,随着打印温度和打印速度的增大,MSE均低于10%。打印温度过高或打印头孔径过大时,胶囊支架内部会出现拉丝现象。综合考虑打印能耗和效率,确定当打印头孔径为0.3mm,打印速度25~30mm/s,打印温度介于173~180℃之间,MSE范围为1%~2%时,胶囊支架打印精度和微观结构较好。研究结果为3D打印精细化结构及打印参数优化提供理论参考。 展开更多
关键词 神经网络 工艺优化 3D打印 熔融沉积成型 胶囊支架
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Clinical observation of Furongtongmai capsule on the lower extremity Atherosclerotic Occlusive Disease after Intervention Operation
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作者 Wei Yao Xiu-Hai Su +7 位作者 Yuan-Song Wang Yan-Ling Du Zhan-Yi Gao Yin-Sheng Gao Na Li Na-Na Feng Qing Chen Hua Guo 《TMR Modern Herbal Medicine》 2018年第4期203-208,共6页
Objective To investigate the effect of Furongtongmai capsule on the in-stent restenosis (ISR) of superficial femoral artery after interventional operation in lower extremity Arteriosclerosis Occlusion (ASO).... Objective To investigate the effect of Furongtongmai capsule on the in-stent restenosis (ISR) of superficial femoral artery after interventional operation in lower extremity Arteriosclerosis Occlusion (ASO). Methods: A total of 110 inpatients with ASO who performed Superficial femoral artery stent implantation were randomly divided into observation group and control group, with 55 cases in each group.Both groups received Aspirin 100 mg/d and Clopidogrel 75 mg/d. The observation group was given Furongtongmai capsule on the basis of routine treatment. After continuous treatment for 6 months, the clinical efficacy, Ankle Brachial Index (ABI), high-sensitivity C-reactive protein (Hs-CPR) and ISR were compared between the two groups. Results: At 6 months after operation, the plasma levels of Hs-CRP in the two groups were significantly lower than those in the control group (P 〈 0.05). The ABI of treatment group was significantly higher than the control group (P 〈 0.05). There was a statistically significant difference in ISR incidence between the treatment group and the control group 6 months after surgery (9.09% vs 27.78%, P 〈 0.05). Conclusion: Furongtongmai Capsule can inhibit Hs-CRP in patients with ASO after femoral artery intervention, improve the ankle brachial index and reduce the incidence of ISR. 展开更多
关键词 Furongtongmai capsule Lower extremity atherosclerotic occlusive disease intervention operation restenosis rate HS-CRP
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