猪,鼠及胎儿皮肤胶原的分析

乙酸胃酶法分别提取了猪，鼠及胎儿皮肤中的胶原，ＳＤＳ－ＰＡＧＳ法分离鉴定，各图谱均显示出三个清晰的区带α，β及γ，α区有α２与α１部分重叠的条带。结果表明三种皮肤胶原组成基本相同。     

Comparison study of harmonic imaging （HI） and fundamental imaging （FI） in fetal echocardiography

OBJECTIVES: To directly compare the quality of harmonic imaging (HI) and fundamental imaging (FI) in fetal echocardiography and to determine any differences in image quality between the two modalities. METHODS: Fetal echocardiograms were performed with the use of FI and HI in 58 fetuses, image quality and visualization of left and right atria, left and right ventricles, mitral and tricuspid valves, aortic and pulmonary valves, left and right ventricular outflow tracts were evaluated and compared between FI and HI. RESULTS: Mean HI scores were higher than mean FI scores (2.73 +/- 0.43 vs 2.16 +/- 0.69, P < 0.001) for all the cardiovascular structures evaluated. Compared with FI, HI improved the image quality and visualization of fetal cardiac structures in subjects with both good (2.73 +/- 0.43 vs 2.88 +/- 0.32, P < 0.001) and suboptimal (1. 65 +/- 0.41 vs 2.58 +/- 0.47, P < 0.001) echocardiographic windows. The interobserver correlation coefficient for the grading scores was 0.74 (P < 0.001). CONCLUSIONS: harmonic imaging enhances and improves the image quality of fetal echocardiography; and has important potential role in cardiac imaging in the fetus.     

应用数理统计对胎儿双顶径分布规律的研究

本文利用夏皮罗－威尔克检验和达戈斯提诺检验对６２７例胎儿顶往的实测值作了正态性研究，结果表明，胎龄４－１０月的胎儿双顶径胎从正态分布，给出了正态总体的期望和方差及其在置信水平ａ＝０．０５下的置信区间。     

吸烟对妇女的危害

二十世纪初吸烟妇女是一种罕见现象。从二十年代开始,每过十年吸烟者就变得越来越多;六十年代以前,根据世界统计资料,全世界有一半男人和将近四分之一妇女吸烟。目前,世界卫生组织宣布:在一些国家中吸烟妇女已达50％。     

基于LMS改进算法的自适应滤波器在胎儿心电监测中的应用

从母体心电与胎儿心电的特点出发，提出了LMS算法的一种改进方法，设计了自适应滤波器消除母体心电对胎儿心电干扰的一种新型实现方法，分析了系统结构，并且在QRS渡变化较快时采用LSL方法以解决LMS算法收敛速度较慢在QRS波不适合采用LMS算法的问题，使自适应滤波器在消除母亲心电对胎儿心电干扰方面得到最佳效果，并进行计算机结果仿真对比