超构表面红外分光阵列设计

超构表面阵列分光具有高透射、低损耗、高集成度的特点,是当前微纳结构领域的研究热点。本文提出了一种由Si和SiO2组成的超构表面红外分光阵列。以不同波长的红外光入射单元,仅改变圆柱半径,分别计算不同波长的透射率和出射相位随半径的变化。根据广义斯涅尔定律,选择具有不同圆柱半径的若干单元组成超构表面分光周期。该周期对不同波长的入射光具有对应的透射相位梯度,验证了超构表面阵列具有分光功能。对超构表面红外分光阵列可能的应用提出了展望。结果表明:以半径为150,250,300 nm的3个Si纳米柱组成的超构表面周期可以将波长2.7μm和2.9μm的混合入射红外光分离,并且透射率达到70%以上。

甲硝唑粉预防下颌阻生齿拔除后干糟症的临床观察

目的探讨甲硝唑粉对下颌阻生齿拔除后干槽症的预防效果。方法2组下颌阻生齿患者均接受拔除手术治疗，研究组待患牙拔除后将甲硝唑片研磨成粉末后与地塞米松磷酸钠填塞入拔牙创面、严密缝合；对照组下颌阻生齿患者仅给予严密对照缝合。2组下颌阻生齿患者术后均给予阿莫西林口服并给予1周有效随访，记录其干槽症发生情况，将所得数据输入SPSS软件后给予相应分析并得出结论。结果研究组拔牙术后干槽症发生率为3.45%，对照组拔牙术后干槽症发生率为20.69%，2组差异有统计学意义（P＜0.05）。结论甲硝唑粉可降低下颌阻生齿拔除后干槽症的发生率，值得临床应用。

Inconel 601镍基高温合金真空感应熔炼脱氧工艺研究

研究了采用国产大型真空感应炉熔炼Inconel 601镍基高温合金的脱氧工艺。从热力学上计算了合金熔液中碳氧反应平衡值。通过调整熔炼工艺参数,确定了影响氧含量及合金轧制质量的工艺参数最佳范围。结果表明:熔化时间为365~370 min、真空度为1.0~1.2 Pa及C初始加入量为0.050%时,合金氧含量可降至10×10^(-6)以内,脱氧率可达90%以上。采用6 t国产大型真空感应炉可生产出高纯净度的镍基高温合金产品。

Effect of Combining Tuina with Balance Training on Balance Functions of Stroke Patients

Objective： To observe the effect of combining tuina with balance training on balance functions of stroke patients. Methods： A total of 120 cases who met the inclusion criteria were randomly allocated into an observation group and a control group. In addition to routine medical and rehabilitation treatment in both groups, balance training was used in the control group, versus combining tuina with balance training in the observation group. The therapeutic efficacies in two groups were evaluated using the Balance Subscale of the FugI-Meyer Test （FM-B） before and after treatment. Results： After 3 courses of treatment, the FM-B scores were significantly improved in both groups （P〈O.01）; and there was statistical difference in FM-B scores between the two groups （P〈0.05）. Conclusion： Tuina manipulation of regulating the Governor Vessel can improve the balance function of stroke patients and benefit the patients＇ self-care abilities.