饮用淦河温泉下游河水对儿童健康的影响

长期饮用淦河温泉下游河水可使儿童头发中硒与硫的含量高出正常（指饮用自来水的）儿童约４倍，呈现高硫高硒体征，此体征儿童心率较慢，窦性心率不齐者增多，心房去极电位升高，心室去极和复极电位下降，Ｓ－Ｔ段移位例数和移位幅度均增加，心电图中的这些变化均在允许范围之内，但有些已接近病理边缘。红细胞数和血红蛋白量均略低于正常儿童。     

高频电磁场对工人行为功能的影响

采用世界卫生组织推荐的神经行为核心测试组合（ＷＨＯ－ＮＣＴＢ），对高频作业工人４１名（平均工龄１３．９ａ（年）及年龄、性别、文化程度与接触组相匹配的对照组工人３９名（平均工龄１３．３ａ）分别进行了行为功能测试。结果表明高频作业工人部分情感状态得分和某些行为功能得分与对照组相比差异有显著性。长期接触高频电磁场可能引起工人情感状态改变，记忆力减退、注意力分散及心理运动稳定度下降。     

心脏传导的变异性裂隙现象

在连续３６１例患者心内电生理检查中，发现４例有心脏传导的裂隙现象。其特点表现为激动传导方向上远端平面相对不应期（ＲＲＰ）长，程序刺激中先出现传导延缓，随后近端平面也进入ＲＲＰ使传导变为延缓，激动经过近端平面延缓传导后，到达远端平面时其已脱离了ＲＲＰ，使已经在远端传导延缓的情况变为传导正常，与经典的裂隙现象相比，这种裂隙现象的发生机制，与心内电图的表现均有不同，暂定名为变异性裂隙现象。     

Induction of DNA synthesis by sodium phenobarbital, uracil, and sodium saccharin in urinary bladder of the F344 rat

DNA synthesis in urothelial cells was determined 2, 4, 6, 10, and 16 weeks following dietary administration of promoters of bladder tumors to weanling male F344 rats. The experimental groups were fed AIN-76A diet or this diet containing 0.15% sodium phenobarbital, 3% uracil, 5% sodium saccharin, 2% sodium bicarbonate, or a combination of 5% sodium saccharin and 2% sodium bicarbonate. Two other groups were given Wayne rodent chow alone or in combination with 5% sodium saccharin. A group of rats given a drinking water containing 0.01% N-butyl-N-(4-hydroxybutyl)nitrosamine served as a positive control. With the exception of phenobarbital which increased the labeling index but did not induce hyperplasia, all other compounds increased the labeling index and induced hyperplasia. The combination of sodium saccharin and sodium bicarbonate was more effective than either compound alone in increasing the labeling index. Sodium saccharin was equally active when incorporated in either the AIN diet or the Wayne rodent chow. The present results suggest that a fundamental mechanism of bladder tumor promotion may be due to an increased DNA synthesis which leads to an increased turnover rate of urothelial cells rather than hyperplasia. However, since sodium saccharin is a promoter when incorporated into the Wayne diet but not into the AIN diet, the ability to stimulate DNA synthesis may be an important but insufficient condition for promotion by saccharin.     

Carotid-cavernous sinus fistula associated with a primitive trigeminal artery

Carotid-cavernous sinus fistulas are not rare, but they have never been reported in association with persistent primitive trigeminal artery. We recently encountered such a case. The Jaeger-Hamby procedure was employed, with mandatory occlusion of the primitive trigeminal artery.     

线宽增量法及其在生物材料发射光谱分析中的应用

作者利用交流电弧和光栅摄谱仪组装了能够绘制谱线轮廓曲线和准确测定谱线宽度的记录仪,用线宽增量法对生物材料(拟血清)中的主要成分Ca和微量元素Cu进行了测定。与黑度法相比,本实验结果的线性好,误差小,再现性有所提高。这些结果表明,用上述仪器装置和线宽增量法进行生物材料含量分析优于黑度法。     

运用人力资源管理策略 改革病房护理管理

从发展成功管理的共同文化,创建优质服务病房;建立有效的护理人力资源管理支持系统,创建适合于专业护理的工作环境,确保护理质量;以病人为中心,以病人满意度作为衡量护理工作优劣的标准三个方面介绍了乐山市人民医院运用护理人力资源管理策略,改革病房护理管理,创建优质服务病房的实践经验及其效果。     

糖对椰酵假单胞菌产毒性能的影响研究

以半固体ＬＡ和营养琼脂为基础培养基，分别加入葡萄糖、蔗糖、可溶性淀粉、甘油等４种成分，研究糖分对椰酵假单胞菌产毒性能影响。结果表明，椰酵假单胞菌在营养琼脂和ＬＡ半固体基础培养基上基本不产毒或产毒量很低，而葡萄糖和甘油的加入使椰酵假单胞菌的产毒能力大幅度提高，产毒量不低于在马铃薯葡萄糖琼脂（ＰＤＡ）中，提示了糖代谢在椰酵假单胞菌生长和产毒过程中的重要作用。建议将ＬＤＡ（含葡萄糖的ＬＡ，新设计）半固体做为一种新的椰酵假单胞菌产毒培养基，有利于实验室研究及不同实验室间的质量控制