尿素霜的处方改进

目的:改进尿素霜处方,提高其质量和储存稳定性。方法:作影响因素的均匀设计试验,并根据试验结果设计新处方。结果:设计了最佳处方,新处方成品质量和稳定性明显优于原处方。结论:新处方是对原处方的成功改进。     

口腔全景X线机高压故障分析与排除

介绍了口腔全景X线机高压单元发生故障的表现及分析、处理方法。     

脑梗塞恢复期患者进行健身球运动的经颅多普勒观察

目的：探讨健身球运动对脑梗塞恢复期神经功能的恢复作用。方法；应用经颅多普勒（TCD）监测30例脑梗塞恢复期患者用患侧和健侧上肢及30例正常对照组分别进行2分钟的健身球运动。结果：对侧大脑中动脉（MCA）平均血流速度（Vm）增加分别为10．4±5．1％；9．7±2．7％；11．3±4．9％。患侧上肢运动时，同侧MCA的Vm增加10．5±4.6％，分别与健侧上肢（1．7±3．7％）及正常对照组（1．8±4．5％）比较，P＜0．01。结论：脑梗塞恢复期用患侧上肢进行健身球运动，双侧MCA的Vm增加，有助于神经功能恢复，也证实了TCD可作为评价脑血流量改变的有效手段。     

Clinical wear of overdenture ball attachments after 1, 3 and 8 years

Objectives: Implant‐supported overdentures have become the treatment of choice in restoring complete edentulism, but the types of attachment to assure durable retention are a subject of debate. Ball attachments were reported as a simple treatment, but wear of components was responsible for a decrease in retention. The aim of this retrospective study was to measure the wear of the ball abutment or patrix after three different periods of clinical wear. Material and methods: Sixty‐nine specimens of three groups of patrix that were in use for a mean of 12.3 months (group A), 39 months (group B) and 95.6 months (group C) were retrieved from 35 patients and measured on a coordinate measuring machine equipped with a touch trigger probe. Ten unused ball abutments were added as a control (group D). The patrix diameters and any deviation from circularity in different axes were measured. Results: The diameters of groups A, B and C were significantly different from that of group D (control). No statistically significant differences were found between diameter and circularity variations between groups B and C. The maximal amount of diameter reduction was limited to approximately 30 μm, and 90% of diameter loss at the equator due to wear was reached in group B. Conclusion: One, 3 and 8 years of clinical wear reduced significantly the diameters of the ball abutments tested, and the maximal amount of wear was reached after 3 years of clinical use. To cite this article:
Fromentin O, Lassauzay C, Nader SA, Feine J, Albuquerque RF Jr. Clinical wear of overdenture ball attachments after 1, 3 and 8 years.
Clin. Oral Impl. Res. 22 , 2011; 1270–1274.
doi: 10.1111/j.1600‐0501.2010.02102.x     

Fabrication of the Zirconium Diboride-Reinforced Composites by a Combination of Planetary Ball Milling,Turbula Mixing and Spark Plasma Sintering

The aim of this study was to carry out the consolidation of zirconium diboride-reinforced composites using the SPS technique. The effect of the adopted method of powder mixture preparation (mixing in Turbula or milling in a planetary mill) and of the reinforcing phase content and sintering temperature on the microstructure, physical properties, strength and tribological properties of sintered composites was investigated. Experimental data showed that the maximum relative density of 94–98% was obtained for the composites sintered at 1100 °C. Milling in a planetary mill was found to contribute to the homogeneous dispersion and reduced clustering of ZrB₂ particles in the steel matrix, improving in this way the properties of sintered steel + ZrB₂ composites. Morphological and microstructural changes caused by the milling process in a planetary mill increase the value of Young’s modulus and improve the hardness, strength and wear resistance of steel + ZrB₂ composites. Higher content of ZrB₂ in the steel matrix is also responsible for the improvement in Young’s modulus, hardness and abrasive wear resistance.     

妇科恶性肿瘤术后负压引流球的应用及护理

目的探讨负压引流球在妇科恶性肿瘤术后患者中的应用及护理。方法140妇科恶性肿瘤术后患者按术后引流方法的不同分为刀口负压引流球引流组和传统引流（橡皮片引流）各70例。结果负压引流球引流组较传统引流组在发生刀口感染率、术后发烧持续时间及发烧程度等方面差异具有统计学意义（P〈0．05）。结论负压引流球的使用方便了临床观察和护理,保证了负压引流的效果。     

分娩球降低剖宫产率的作用研究

目的：探讨产程中应用分娩球对降低剖宫产率的价值。方法：将300例初孕妇按随机数字表法分为观察组和对照组,各150例。观察组初孕妇在临产后,由助产士指导应用分娩球。对照组除不应用分娩球外,其他干预措施与观察组一致。分别对两组初孕妇的心理状态、疼痛、产程、分娩方式、产后出血量等进行观察与比较。结果：观察组初孕妇主观能动性增强,疼痛情况较对照组显著减轻,剖宫产率为16.0%,较对照组40.1%降低,产程缩短,两组比较,差异有高度统计学意义（P〈0.01）。结论：初孕妇产程中应用分娩球能够缩短产程时间,减轻部分疼痛,提高了自然分娩率。通过对分娩球的应用研究,希望找出降低剖宫产率的新举措。     

ADR: An atypical presentation of rare dematiaceous fungus

The association of fungus in allergic fungal rhino sinusitis has been around 200 times in the world literature. As per the available literature, the most common agent identified so far appears to be ASPERGILLUS, though the condition is increasingly associated with Dematiaceous fungi. Here we report for the first time the presence of unusual fungus in allergic rhino sinusitis, which has not been reported so far.