粮谷尘致肺损害的实验研究

粮谷尘为混合性粉尘，含游离ＳｉＯ２９．７７％，分离培养出普通高温放线菌。染尘动物肺脏早期病变主要为小灶性肺泡炎、灶性间质性肺炎、异物肉芽肿等，大、中支气管壁脱颗粒肥大细胞增多。９０ｄ以后，上述病变明显减少，但逐渐出现少数小的细胞结节，间质轻度纤维组织增生、支气管慢性炎症和小叶中央型肺气肿样病变，观察１ａ（年）未见明显纤维化。     

微波等离子体化学气相沉积合成TiN超细颗粒

热力学计算表明，Ｈ２，Ｎ２的过量有助于提高ＴｉＮ的产率，但能耗也相应增加。为此考察了温度，流量，ＴｉＣｌ４携带量，混合方式对产物性能的影响。结果表明，流量增加，温度升高，ＴｉＣｌ４携带量增加，混合愈好，则产物粒径愈小。在此基础上采用微波等离子体化学气相沉积法，合成了粒径为１２３－２８４ｎｍ的ＴｉＮ超细颗粒     

The fit of fixed partial dentures joined by infrared soldering.

This study determined the accuracy of fit of three-unit fixed partial dentures joined by an infrared soldering technique compared with one-piece fixed partial denture castings and individually cast crowns. Wax patterns of prepared Ivorine teeth, maxillary left central incisor and maxillary left canine, were injection molded; a plastic rod was used as a pontic. One group of patterns was cast as one-piece dentures; the other group was sectioned in the connector area, cast individually and then joined by infrared soldering. Castings were seated on their respective dies, embedded in epoxy resin, and sectioned. Gap distances between the casting and the die were measured at specified marginal sites with a profile projector. Results showed that the fit of infrared-soldered fixed partial dentures was significantly better than that of one-piece castings and was comparable with the fit of single crowns. The gap openings measured in all castings were within the range of clinical acceptability.     

近年中医药治疗中风后遗症进展

中医药对中风后遗症治疗方法主要包括：①辨证分型治疗；②主方加减治疗，具体包括补气活血方、滋补肝肾方和健脾益气方；③虫类药治疗；④单味药治疗。但是，今后应把中医药、针灸、推拿等方法综合应用于临床，以便取得更好的疗效。同时应加强临床科研设计和实验研究，使中医药治疗中风后遗症更上一个层次。     

膝前框形钢丝内固定治疗髌骨骨折

目的　总结采用钢丝环扎 +膝前方框形张力带钢丝内固定法治疗髌骨骨折的经验和临床效果。方法　对 3 5例髌骨骨折应用此方法治疗 ,其中男性 2 4例 ,女性 11例 ,3 0例获得 3～ 2 4个月随访。结果　优 19例 ,良 10例 ,可1例 ,优良率 96 7%。术后未出现骨折再移位 ,无伤口感染。愈合时间 6～ 12周。结论　该方法符合生物力学原理 ,操作简便 ,适应证广 ,能早期关节活动 ,是治疗髌骨骨折的理想方法之一。     

Practice guidelines: the radiology perspective

Clinical practice guidelines have emerged as a reality for medical practitioners over the past 20 years. Although virtually all groups interested in the development of practice guidelines hope for improvements in patient care, secondary expectations vary widely among those using them. Their use in daily practice by physicians has met with resistance from barriers including concerns of “cookbook” medicine, a loss of autonomy, and increased professional liability. The recent experience of the ACR in addressing these challenges illustrates that physicians are receptive to steps perceived to mitigate the risks accompanying the use of guidelines as well as to efforts to increase their understanding of implementing guidelines in clinical practice. The experiences of other medical societies and an inventory of future trends reveal additional challenges associated with the use of practice guidelines, as third parties look to guidelines as points of reference for gauging the performance of health care providers.     

颈内动脉接近完全闭塞时的处理

目的由于卒中风险随着狭窄严重程度的增加而升高，因此认为颈内动脉（ICA）接近闭塞患者的卒中风险很高。在现有的随机试验中，还没有专门针对这种情况进行探讨，因此其处理尚存在争汶。方法：对相关文献进行系统评价。结果：对ICA接近闭塞患者的处理还存在争议：一些学者支持进行干预，而另一些学者则认为存在风险或没有益处而反对进行干预。在ICA接近闭塞的有症状患者中进行一项比较外科治疗与最佳内科治疗的多中心前瞻性随机试验似乎非常困难，因为这类研究需要大量的患者。尽管如此，基于目前的证据，似乎很难拒绝手术治疗。结论：由于目前对ICA接近闭塞患者的最佳处理方案仍存在着争议，因此需要前瞻性观察性研究以证实其在有症状和无症状人群中的患病率以及相关的卒中风险。基于目前的证据，大多数医疗中心选择手术治疗，但它相对干内科治疗的特粱尚右待证章．     

Ca^＋＋对链霉素抗原—抗体反应的抑制作用

为探讨临床中使用钙制剂抢救链霉素过敏休克病人有良好效果的原因,由被动血凝试验、被动皮肤过敏试验和ELISA法证实,Ca~( )可以抑制链霉素抗原-抗体的反应。这种抑制作用是通过Ca~( )链霉素抗原结合,封闭链霉素抗原决定簇来加以实现的。     

Application of the Population Health Approach to Drinking Water System Surveillance

A drinking water supply is a complicated system in its construction,operation,maintenance and need for public health surveillance.