摘要：Objective To explore the effects of acupuncture on nutritional status in patients in a persistent vegetative *** A prospective randomized controlled trial was designed.A total of 66 patients in a persistent vegetative state were randomized into a control group and an observation group,with 33 cases in each *** control group was given conventional treatment plus enteral nutrition *** observation group was treated with additional Tiao Shen Jian Pi acupuncture therapy(acupuncture for spirit-regulating and spleen-invigorating)based on the same interventions in the control *** groups were treated for 8 *** levels of total protein(TP),prealbumin(PA),albumin(Alb),and hemoglobin(Hb)were measured before and after *** upper arm circumference and skinfold thickness of triceps brachii were *** the intestinal flora and fecal short-chain fatty acids contents were *** After treatment,the levels of TP,PA,Alb,and Hb in the control group were decreased(P0.05),and the levels were all higher than those in the control group(P<0.05).The upper arm circumference and skinfold thickness of triceps brachii in both groups decreased(P<0.05),and the values of these two items in the observation group were higher than those in the control group(P<0.05).In the control group,the contents of Bifidobacterium and Lactobacillus in feces decreased(P<0.05),and the content of Enterococcus increased(P<0.05).In the observation group,the contents of Bifidobacterium and Lactobacillus in feces increased(P<0.05),and the content of Enterococcus decreased(P<0.05).The differences between the two groups were statistically significant(P<0.05).In the control group,the total content of fecal short-chain fatty acids and the contents of acetic acid and butyric acid in feces decreased(P<0.05).In the observation grou

摘要：为研究部分包裹钢-混凝土组合轴压柱的整体稳定性能与设计方法,完成了两个试件的试验。利用有限元软件ABAQUS建立部分包裹钢-混凝土组合柱数值分析模型,并对比试验数据校核模型准确性。利用该数值模型进行参数分析,考虑材料强度、组合柱长细比、含钢率、纵筋和系杆的布置对该类轴压构件整体稳定性能的影响,分别获得不同因素影响下构件绕强轴和绕弱轴的极限承载力。结果表明,材料强度、系杆间距及含钢率对稳定性能的影响均较为显著,纵筋对轴压稳定性能的影响可以忽略。基于数值模拟结果,按照不同含钢率进行归类分析,拟合出稳定系数曲线,并考虑材料强度组合和系杆间距的影响,对稳定系数曲线进行修正,获得适用于PEC柱的轴压整体稳定系数计算方法。基于现行规范,引入可靠度指数,得到PEC柱截面承载力计算公式,进而提出适用于部分包裹钢-混凝土组合柱的轴压整体稳定设计方法。

摘要：为研究窄翼缘PEC中长柱轴压整体稳定性能,设计制作9根组合长细比介于76~141(正则化长细比介于0.84~1.55)的窄翼缘PEC中长柱,进行轴压整体稳定性能试验。研究窄翼缘PEC中长柱的初始弯曲、长细比、混凝土强度等因素对其破坏模式和轴压整体稳定承载力的影响。试验结果表明,窄翼缘PEC中长柱在轴压荷载下的破坏模式表现为绕弱轴的弯曲失稳,长细比和初始弯曲显著影响试件的破坏模式和极限承载力。当试件的正则化长细比大于1.0,初始弯曲大于L/1000时,试件的破坏模式表现为整体极值点失稳;当试件的正则化长细比大于1.0,初始弯曲小于L/2000时,试件的破坏模式表现为弹性平衡分岔失稳;当试件的正则化长细比小于1.0,初始弯曲小于L/2000时,试件的破坏模式介于弹塑性极值点失稳和平衡点分岔失稳之间;初始弯曲一致时,试件的极限承载力随着长细比的增大迅速降低。采用ABAQUS有限元软件建立窄翼缘PEC中长柱有限元模型,将计算承载力与现行规范计算结果进行对比。结果表明,试件轴压整体稳定承载力比规范承载力高出20%,按现行规范计算整体稳定承载力时,没有充分考虑混凝土和型钢的协同作用,规范计算结果偏保守。

摘要：介绍面向肿瘤患者智能远程管理的政策背景、患者需求、相关技术,详细阐述肿瘤患者免疫治疗后智能远程管理系统设计方法,包括体系架构、数据流转、功能模块等,分析系统应用意义、存在不足及未来发展方向。