小针刀辅助自体脂肪颗粒移植在面部除皱及凹陷充填中的应用

目的探讨小针刀辅助自体脂肪颗粒注射除去额部、眉间、鼻唇沟等部位皱纹及充填面部凹陷的效果。方法利用自制小针刀,离断真皮与其下方的"纤维粘连",然后用自体脂肪颗粒注射除皱和充填凹陷部位。结果本组共68例。修复面积最大约10cm×8cm,最小约1.5cm×0.5cm。随访45例,随访时间3～18个月,效果满意或基本满意。结论小针刀辅助自体脂肪移植具有操作简单、快捷、价廉、安全、无排异、不留瘢痕、术后恢复快等优点,患者易于接受,是除去额部、眉间、鼻唇沟等部位皱纹及填充面部凹陷的有效方法。     

肝阳上亢证甲皱微循环观察与分析

以我所统一标准,确诊为“肝阳上亢证”者,进行微循环观察,肝阳上亢证者90例;阴虚阳上亢证者88例,健康对照组48例。观察发现肝阳上亢组与健康对照组及阴虚阳亢组与健康对照组均有显著性差异。通过卡方证明本检测数据可靠,微循环观测可作为“肝阳上亢证”的客观检测指标之一。     

老化皮肤的胶原与弹性组织变化研究

目的：探讨光曝露情况及年龄因素对皮肤中弹性组织、Ⅰ/Ⅲ型胶原及基底膜Ⅳ型胶原的影响,进而探索皱纹形成的组织学原因。方法：对80例取自不同年龄志愿者的曝光部位（眶周/前额、面颊）及非曝光部位（腹部/臀部）的皮肤组织进行HE染色、Weigert染色、苦味酸天狼猩红染色及免疫组化处理,采用显微形态观察和半定量分析。结果：各部位皮肤基底膜内Ⅳ型胶原的含量无差异;随着曝光时间增加,前额/眶周皮肤中Ⅰ型胶原减少率最大,弹性变性物质增加率最大。结论：前额/眶周皮肤的胶原显著减少和弹性变性物质明显增生,是该部位皮肤皱纹早发的重要原因。     

A Three-Dimensional Equivalent Stiffness Model of Composite Laminates with Wrinkle Defects

The stiffness of composite laminates is easily affected by wrinkle defects. In this paper, a new effective analytical model was proposed to predict the three-dimensional equivalent elastic properties of multidirectional composite laminates with wrinkle defects. Firstly, a geometric model was established according to the microscopic characteristics of wrinkle defects. Then, based on the classical laminate theory and homogenization method, the constitutive equation and flexibility matrix of the wrinkle region were established. Finally, the equivalent stiffness parameters of unidirectional and multidirectional laminates were derived, and the effects of different wrinkle parameters and ply-stacking sequences on the stiffness of unidirectional and multidirectional laminates were studied by using the analytical model. The results show that the mechanical properties of the lamina and laminates are affected by the out-of-plane angle and in-plane angle of the wrinkle defects. The accuracy of the analytical model has been verified by the numerical model and other theoretical models, and it has the characteristics of few parameters and a high efficiency. The analytical model can be used to predict the stiffness of composite structures with wrinkle defects simply, effectively, and quantitatively. It can also be used as a tool to provide the mechanical response information of laminates with wrinkle defects.     

非侵入式射频除皱术联合电针除皱术的临床应用效果

目的探讨非侵入式射频除皱术联合电针除皱术的临床应用效果。方法选取2017年6月至2018年6月收治的86例需要除皱的女性为研究对象,根据除皱方式的不同将其分为对照组(43例,电针除皱术)与观察组(43例,非侵入式射频除皱术+电针除皱术)。比较两组的近期疗效、远期疗效、皮肤油脂含量、皮肤水分含量、皮肤弹性评分、并发症发生情况及生活质量。结果治疗后3个月,两组的治疗总有效率比较,差异无统计学意义(P>0.05);治疗后1年,观察组的治疗总有效率显著高于对照组,差异具有统计学意义(P<0.05)。治疗前,两组的皮肤油脂含量、皮肤水分含量及皮肤弹性评分比较,差异无统计学意义(P>0.05);治疗后,两组的皮肤油脂含量及皮肤弹性评分均降低,皮肤水分含量均升高,且观察组优于对照组,差异具有统计学意义(P<0.05)。两组的并发症总发生率比较,差异无统计学意义(P>0.05)。治疗前,两组的DLQI评分比较,差异无统计学意义(P>0.05);治疗后,两组的DLQI评分均升高,且观察组高于对照组,差异具有统计学意义(P<0.05)。结论非侵入式射频除皱术联合电针除皱术的临床应用效果显著,可改善女性的皮肤状态及生活质量,且安全性高,值得临床推广与应用。