钢丝环固定自体表皮移植治疗白癜风

目的探索特殊部位白癜风自体表皮移植治疗的包扎固定方法。方法试验组移植区边缘用钢丝环绕一周,缝合固定于皮肤上,并留置长线,皮片移植后将包扎敷料打包固定。对照组包扎敷料用胶带封包。结果自体表皮移植治疗眼睑及唇部易活动部位白癜风,采用钢丝环固定包扎,术区护理方便,对正常生活影响小,其治疗效果与传统的包扎方法相比有效率有明显提高(P<0.01)。结论钢丝环固定包扎是一种简单有效的包扎固定方法,可以提高活动大的部位白癜风手术治疗的成功率。     

普通钢板内固定治疗胫骨骨折并发症原因分析

目的分析普通钢板内固定治疗胫骨骨折术后骨不连的发生原因与治疗对策。方法自1998年7月～2005年12月共收治胫骨骨折患者182例。全部采用普通钢板内固定治疗。术后平均随访14个月（12～18个月）。结果182例中有175例达到临床愈合标准,并已拆除钢板,未发生骨髓炎、再骨折等并发症。经X线片检查,骨折均为骨性愈合,骨折临床愈合时间12～16周,平均14周。7例未达到临床愈合标准,发生率为3．85％。患者同时合并有腓骨骨折,主要并发症为术后骨不连。结论普通钢板内固定目前仍是基层医院治疗胫骨骨折的有效方法,只要严格掌握适应症,熟练掌握操作规程,可以减少并发症,提高疗效。     

火针配合拔罐的临床应用概况

综述近10余年来火针配合拔罐的临床应用概况。火针配合拔罐在皮肤科、骨伤科及外科得到了广泛的应用。今后可进一步提高其临床科研的设计水平,以充分体现火针配合拔罐的优势。     

Study on Hot Deformation Behavior of an Antibacterial 50Cr15MoVCu Tool Steel

Hot deformation behaviors of an antibacterial 50Cr15MoVCu tool steel were studied. The flow stress curves presented three typical characteristics: (i) a single peak dynamic recrystallization curve, (ii) a monotone incremental work-hardening curve, and (iii) the equilibrium dynamic recovery curve. The flow stress increased with the increase of the deformation rate at each deformation temperature and decreased with the increase of the deformation temperature at the same deformation rate. The thermal activation energy and material constants were Q of 461.6574 kJ/mol, A of 3.42 × 10¹⁷, and α of 0.00681 MPa⁻¹, respectively. The high temperature constitutive equation was: Z=ε˙expQ/RT=3.42×1017sinh0.0068×σ5.6807. Based on the processing maps and microstructure evolution, the best hot working process was a deformation temperature of 1050 °C and deformation rate of 0.001 s⁻¹.     

头体针联合治疗小儿抽动秽语综合征25例

目的 针刺与单纯服用西药治疗小儿抽动秽语综合征的临床疗效差别。方法 针刺组采用辨证选取穴,西药组采用氟哌啶醇口服。结果 针刺组25例,有效率为93％,西药组24例,有效率为82％。结论 针刺治疗小儿抽动秽语综合征疗效满意。     

中医综合疗法治疗脾胃湿热型雄激素源性脱发的临床研究

目的观察中医综合疗法治疗脾胃湿热型雄激素源性脱发的临床疗效。方法将65例脾胃湿热型雄激素源性脱发患者随机分为治疗组(33例)与对照组(32例)。对照组予中药内服及针刺疗法,治疗组同时加用七星针叩刺。两组疗程均为3个月,观察临床疗效,并比较治疗前后临床症状总积分及各分项积分的变化情况。结果 1治疗组、对照组总有效率分别为90.91%、84.38%;组间临床疗效比较,差异有统计学意义(P0.05)。2治疗前后组内比较,两组掉发情况、头皮情况、新发再生情况积分及总积分差异均有统计学意义(P0.05);组间治疗后比较,掉发情况、头皮情况、新发再生情况积分、总积分及其变化差值的差异有统计学意义,治疗组优于对照组(P0.05)。结论中医综合疗法治疗脾胃湿热型雄激素源性脱发的疗效满意,可显著改善患者的临床症状,促进毛发新生。     

不同频率电针对实验性肥胖大鼠脂代谢的影响

目的:通过观察不同频率的电针对实验性肥胖大鼠脂代谢的影响,探讨频率调节脂代谢异常的作用机制。方法:采用谷氨酸钠和高脂饮食诱导的下丘脑性肥胖大鼠模型,选取大鼠曲池、丰隆、三阴交、后三里、中脘和关元穴,采用2Hz、50Hz、100Hz频率针刺。测定大鼠体质量指数(Lee,s指数)、左肾周脂肪和大网膜脂肪湿重;用酶学终点法测血清三酰甘油(TG)、胆固醇(TC)的含量;用磷钨酸-镁沉淀法测血清高密度脂蛋白胆固醇(HDL-C)含量;用聚乙烯硫酸沉淀法测血清低密度脂蛋白胆固醇(LDL-C)含量。结果:与模型组比较,电针3组大鼠Lee,s指数、左肾周脂肪和大网膜脂肪湿重、血清TG、TC和LDL-C含量均显著降低(P<0.05或P<0.01),血清HDL-C含量显著升高(P<0.05)。结论:2Hz、50Hz、100Hz电针频率降低大鼠Lee,s指数、调整脂代谢的作用有依次递减的趋势,50Hz电针频率似在降低脂肪重量上较2Hz和100Hz有优势。     

针刀松解法对肩周炎模型家兔抗氧化能力的影响

目的 观察针刀松解法对不同病理分期肩周炎模型家兔抗氧化能力的影响,探讨针刀松解法对肩周炎干预作用的可能机制.方法 将48只雄性新西兰兔随机分为正常组、模型组、电针组、针刀A组(疼痛期干预)、针刀B组(僵硬期干预)、针刀C组(疼痛期及僵硬期均干预),每组8只.应用持续劳损加冰敷方法制备肩周炎家兔模型,电针组和针刀各组分别行电针和针刀治疗,于实验第33天进行实验取材,分别取血清及肱二头肌、冈上肌、冈下肌、大圆肌,检测丙二醛(MDA)、超氧化物歧化酶(SOD)和总抗氧化能力(T-AOC)的变化.结果 针刀松解法对不同病理分期的肩周炎模型家兔血清和局部肌肉中的MDA均具有良好的调整作用,可显著降低肩周炎模型家兔血清和局部肌肉组织中异常MDA含量(P＜0.05,P＜0.01),同时对血清和肌肉组织中的SOD和T-AOC也有较好的调整作用.结论 针刀松解法可对肩周炎模型家兔血清和局部肌肉组织中的氧自由基代谢发挥良性调节作用,针刀松解法对不同病理分期的肩周炎模型家兔抗氧化能力的影响,可能是其发挥治疗作用的重要环节之一.     

Finite Element Analysis of Steel Plates with Rectangular Openings Subjected to Axial Stress

Steel plates with openings are among the important ship structural components used in the ship’s hull to withstand the hydrostatic forces of the ocean, which cause sagging and hogging moments at the ship’s bottom. The existence of openings on plates can cause structural rupture, stress concentration and a decrease in ultimate strength. This research is aimed at investigating the influence of selected parameters on the ultimate capacity of steel plates with rectangular holes subjected to axial stress, using ANSYS finite element analysis (FEA) under its non-linear static structural programme. The main parameters investigated in this paper are the plate thickness, opening aspect ratio, number of openings, position of openings, and the boundary condition of the plate. The influence of these parameters on the stress of plates and their deformation was evaluated. The comparison of the numerical simulation with the well-established analytical method using the Navier solution and Roark’s Formulas showed a good agreement.     

Effects of Forging and Heat Treatment on Martensite Lath,Recrystallization and Mechanical Properties Evolution of 18Ni(250) Maraging Steel

The manufacturing process of maraging steel parts include forging, heat treatment and other technological links, and the strengthening mechanism at different stages is different, which has an important impact on the process design of forgings. To investigate the strengthening behavior of maraging steel, forging experiments with different deformation amounts and heat treatment conditions were carried out, and the microstructural and mechanical properties evolution of 18Ni(250) steel was analyzed. The experimental results show that the size of the martensite lath is affected by multiple factors such as the influence of grain size, recrystallization and martensite substructure fraction. The strengthening mechanism of maraging steel during forging and heat treatment is different. Forging combined with heat treatment can refine grains, and the internal defects of the original material can be better eliminated. The thermal deformation can better play the role of grain refinement compared with cyclic phase transformation, which can improve the plasticity of 18Ni(250) maraging steel.