FAGO/丙烯酸酯乳胶膜的制备及性能表征

采用种子乳液聚合法制备了丙烯酸功能化氧化石墨烯(FAGO)/丙烯酸酯纳米复合乳液,探讨了FAGO用量对FAGO/丙烯酸酯乳液粒径及乳胶膜性能的影响。通过动态光散射测试复合乳液的粒径及粒径分布、SEM表征了复合乳液的形貌,并对乳胶膜热稳定性、玻璃化温度、耐溶剂性、力学性能等性能进行测试。结果表明,FAGO/丙烯酸酯无皂复合乳液的粒径大小均一,乳胶粒子附着在FAGO片层边缘,分散性良好。随着FAGO用量的增加,复合乳液乳胶粒平均粒径逐渐变大,乳胶膜的热稳定性提高和吸水性逐渐降低,同时玻璃化温度升高,力学性能增强。

金荞麦对鸭禽流感疫苗免疫效果影响

一直以来,鸭群对禽流感疫苗免疫应答效果欠佳,为解决该现状,利用金荞麦具有增强免疫力、抗癌和抑菌的功效,按照1%、2%、3%的重量比将金荞麦混合于三穗麻鸭日粮中。于不同日龄采血后分别采用血凝抑制试验、MTT法和ELISA方法,检测禽流感抗体效价、T淋巴细胞转化效率、IFN-γ和IL-2水平。结果显示,金荞麦能够促进禽流感疫苗对鸭群的体液免疫和细胞免疫水平。

Fractional derivative multivariable grey model for nonstationary sequence and its application

Most of the existing multivariable grey models are based on the 1-order derivative and 1-order accumulation, which makes the parameters unable to be adjusted according to the data characteristics of the actual problems. The results about fractional derivative multivariable grey models are very few at present. In this paper, a multivariable Caputo fractional derivative grey model with convolution integral CFGMC(q, N) is proposed. First, the Caputo fractional difference is used to discretize the model, and the least square method is used to solve the parameters. The orders of accumulations and differential equations are determined by using particle swarm optimization(PSO). Then, the analytical solution of the model is obtained by using the Laplace transform, and the convergence and divergence of series in analytical solutions are also discussed. Finally, the CFGMC(q, N) model is used to predict the municipal solid waste(MSW). Compared with other competition models, the model has the best prediction effect. This study enriches the model form of the multivariable grey model, expands the scope of application, and provides a new idea for the development of fractional derivative grey model.

臭灵丹、金荞麦联合西药治疗慢性阻塞性肺疾病急性加重期随机平行对照研究

[目的]观察臭灵丹、金荞麦联合西药治疗慢性阻塞性肺疾病急性加重期疗效。[方法]使用随机平行对照方法,将120例住院患者按就诊顺序号法简单随机分为两组。对照组60例持续低流量氧疗、抗炎、气管扩张剂、激素;30mg氨溴索+100m L生理盐水,2次/d,静滴。治疗组60例臭灵丹、金荞麦各30g,水煎200m L,早晚口服;西药治疗同对照组。连续治疗8d为1疗程。观测临床症状、咳嗽、不良反应。治疗1疗程,判定疗效。[结果]治疗组显效46例,有效10例,无效4例,总有效率93.33%。对照组显效26例,有效14例,无效20例,总有效率66.67%。治疗组疗效优于对照组(P<0.01)。[结论]臭灵丹、金荞麦联合西药治疗慢性阻塞性肺疾病急性加重期疗效满意,无严重不良反应,值得推广。