郁金饮片分级标准研究

中药饮片作为中药产业的三大支柱之一,是中医临床用药和中成药生产的重要原料。该实验以多基原中药--郁金为研究对象,查阅郁金文献并结合市场调查情况,在传统郁金饮片分级的基础上,引入现代评价方法,对郁金饮片进行综合评价,探索传统分级方法与现代评价指标的关联性,建立其分级标准。将在中医药理论指导下使用的郁金饮片划分为优级、一级、二级和统货共4个等级。该研究为多基原中药饮片分级提供了新思路,有助于实现郁金饮片的优质优价,有助于提高临床疗效。     

瓦楞子的炮制工艺优选

目的:优选瓦楞子的炮制工艺,为控制瓦楞子炮制品的质量奠定基础。方法:以性状、饮片得率、水溶性浸出物含量、水煎液Ca2+含量和水浸液p H的综合评分为指标,通过单因素试验和正交试验优选瓦楞子煅制工艺和煅醋淬工艺,并与其煅制后盐水淬工艺、水淬工艺进行比较。结果:瓦楞子最佳煅制工艺条件为温度750℃,煅制时间30 min;最佳煅醋淬工艺条件为温度850℃,煅制90 min后立即投入0.3倍量醋浓度为9%的米醋中进行醋淬,至醋吸净为度;不同炮制工艺多指标综合评分的排序为煅醋淬品煅制品煅盐水淬品煅水淬品;最优工艺条件下煅醋淬品的性状符合"灰白色,质地酥脆"的要求,其饮片得率67.40%,p H 12.47,水溶性浸出物质量分数9.70%,水煎液Ca2+质量分数7.01%。结论:优选的炮制工艺稳定可行,可指导今后工业化生产,提高瓦楞子炮制品的质量,确保临床用药的安全性和有效性。     

模糊数学在医院干部考核中的应用

将模糊数学模型应用到医院干部综合考核中,通过建立综合考核数学模型,对33位中层党政干部的任期内考核结果进行数据处理,得出综合考核总分,为院领导选拨聘用干部提供了科学依据,这是模糊数学模型在医院管理领域内的一次成功运用。     

眩晕定方对血管性眩晕模型家兔体重及肝组织DNA含量的实验研究

目的：研究眩晕定方对血管性眩晕气虚血瘀证模型家兔干预后,家兔体重及肝组织DNA含量的变化。方法：建立实验性血管性眩晕气虚血瘀证家兔模型,采用苯酚法提取兔肝DNA,紫外吸收法测定其DNA含量,观察眩晕定方干预后家兔体重及肝组织DNA含量的改变情况。结果：眩晕定方作用于气虚血瘀型血管性眩晕动物模型后,中剂量组体重为（2.54±0.13）kg,高于西比灵对照组的（2.06±0.10）kg,差异有显著统计学意义（P〈0.01）;中剂量组肝组织DNA含量为（1.1029±0.0916）kg,低于于西比灵组的（1.4236±0.1115）kg,差异有显著统计学意义（P〈0.01）。结论：眩晕定方可增加家兔体重,降低该模型家兔的肝组织DNA含量,从而改善气虚证候。     

Numerical Simulation and Process Optimization on Hot Twist-Stretch Straightening of Ti-6Al-4V Alloy Profile

Ti-6Al-4V profiles prepared by hot extrusion are usually accompanied by bending and twisting. The hot twist-stretch straightening is an effective strategy such that the bending deflection and twisting angle can be simultaneously decreased by a single straightening process. In addition, utilizing stress relaxation effect, the residual stress and springback can be greatly reduced by holding the straightening temperature and strain constant for a period after twist-stretch straightening. In this study, the hot deformation behaviors of the Ti-6Al-4V profile were revealed by experiments. The tensile model was obtained by uniaxial tensile tests within ranges of temperatures (500–700 °C) and strain rates (5 × 10⁻⁵–1 × 10⁻³ s⁻¹). The creep constitutive model was acquired with stress relaxation experiments in ranges of temperatures (500–700 °C) and pre-strain of 1.5%. Then, the coupled thermo-mechanical model of hot twist-stretch straightening was established. Based on orthogonal experiment strategy, the effects of straightening temperature, stretch strain, and holding time on the bending deflection and torsion angle of profile were investigated systematically and the process was optimized. The straightening accuracy is significantly affected by straightening temperature and holding time. By using optimized process parameters in practical straightening experiments, the deflection/length and angle/length after straightening does not exceed 2‰ and 2.5‰°/mm, respectively, which is basically consistent with the numerical simulation result.     

A Study on the Design Depth of Permeable Road Pavement through Dynamic Load Experiment

This study investigated vertical strain and stress through a dynamic load experiment at the testing area of Ke-Da Road, Pingtung, Taiwan. A thirty-five-ton truck was moved at constant speeds of 40, 60, and 80 km/h to simulate heavy load conditions to study the mechanical variations. From the results, it was found that the strain and stress curves of the permeable road pavement showed asymmetry due to the viscoelastic property of the open-grade friction course. The results showed that vertical strains and vertical stresses of permeable road pavement were greatly affected by the axle configuration and the change in traffic speed. Furthermore, to propose the design thickness of a permeable road pavement, the pavement strain and stress were modelled with respect to depth using regression based on these collected data. According to the stress regression models and considering the construction uncertainty, the recommend design depth of a permeable pavement is 30 cm. The findings of this study would be helpful in determining the permeable road pavement depth when subjected to heavy traffic load, and the material combination of open-graded friction concrete, porous asphalt concrete, and permeable cement concrete was proposed in this study during the design period.     

手法复位结合中药熏洗对踝关节骨折患者等速肌力的影响

目的观察中医手法复位结合中药熏洗对踝关节骨折患者踝关节周围的等速肌力的影响。方法60例踝关节骨折患者随机分为中医组和手术组,各30例。临床愈合后一年半左右进行随访,分析比较两组患者踝关节肌力的等速测试指标。结果手术组患足踝关节肌力的等速测试指标明显低于中医组。结论中医综合治疗有利于踝关节骨折患者踝关节周围肌力的恢复。     

肺癌免疫治疗中分离反应的研究进展

肺癌是世界上最常见的恶性肿瘤之一,也是全球癌症死亡的主要原因[1]。近年来,随着免疫检查点抑制剂(immune checkpoint inhibitors,ICIs) 的应用、发展与兴起,一小部分晚期非小细胞肺癌(non-small cell lung cancer,NSCLC) 患者可从中获益。随着对ICIs药物应用后治疗效果的观察,与化疗药物及靶向药物可引起的典型反应,包括完全缓解(complete response,CR)、部分缓解(partial response,PR)、疾病稳定(stable disease,SD)、疾病进展(progressive disease,PD)比较,ICIs可引起另一种非典型反应模式,包括超进展、假性进展、分离反应等。与前两种非典型反应模式比较,目前的研究数据对分离反应的研究报道相对较少。本文回顾一些分离反应的研究,探讨其意义并思考其后续治疗方法。     

甘草炭炮制工艺及质量标准研究

目的：优选甘草炭的炮制工艺并制定其质量标准。方法：以浸出物和甘草苷、甘草酸含量为评价指标,炒炭温度、炒炭时间、翻动频率为考察因素,采用正交试验设计优选甘草炭炮制方法,对其性状、显微鉴别、薄层色谱、总灰分、浸出物进行测定,采用高效液相色谱法（HPLC）对甘草炭中的甘草苷、甘草酸进行定量分析。结果：甘草炭的最佳炮制工艺为炒炭温度360℃,炒炭时间6 min,翻动频率20 r·min–1;甘草炭总灰分为5.2%、浸出物为18.5%、甘草苷质量分数为0.066%、甘草酸质量分数为0.24%。结论：建立了甘草炭的炮制工艺及质量标准,可为甘草炭饮片生产及质量控制提供参考。     

下颌骨撞击试验与有限元分析

目的 利用MTS-858生物材料试验机进行下颌骨撞击试验和三维有限元分析方法揭示下颌骨骨折生物力学机制.方法 根据Hanau合架原理,3例标本分别制备成下颌骨撞击模型,MTS-858生物材料试验机进行下颌骨颏部水平方向撞击试验.人体下颌骨标本利用激光三维扫描系统获得下颌骨模型,有限元软件ANSYS7.0分析.结果 3例标本均在颏部骨折,下颌骨颏部撞击力峰值为(2151.10±125.18)N;响应时间为(17.3±2.3)ms.ANSYS动态显示下颌骨颏部受到撞击后下颌骨内部的应力变化,颏部撞击点应力最大,应力变化曲线显示在颏部距上缘1.92 cm处出现峰值,最大应力为3201.35 kPa.结论 下颌骨撞击试验和三维有限元方法结合量化了颏部受力下颌骨骨折的有关参数,为揭示任意合位下颌骨撞击下颌骨骨折的生物力学机制奠定基础.