可调式广告牌显示控制系统

介绍了可调式广告牌显示系统的工作原理及系统组成和软件设计方法，因其控制的路数与花样可重组而具有很强的实用价值。     

两种大鼠脾胃虚寒模型制备方法的比较研究

目的 对两种脾胃虚寒模型制备方法进行对比分析，为相关的研究提供参考。方法 参照文献介绍的方法，分别用冰氢氧化钠(NaOH)与冰食醋给大鼠灌胃，记录动物体重、进食量与饮水量，末次给药后检测动物胃排空与胃肠推进，取血、胃黏膜测胃肠激素与氧自由基含量。结果 食醋法造模动物体重增长缓慢、进食量、饮水量减少趋势，胃排空与小肠推进率明显降低，胃组织氧自由基损伤程度比正常动物明显增高，血与胃中胃动素含量下降，胃泌素下降不明显；氢氧化钠法造模后，动物体重、进食量和饮水量较正常对照组明显下降，但停止造模后迅速恢复；血中SOD活性及血与胃中胃动素含量下降，对其他指标的影响不明显。结论 食醋法造模所制备的脾胃虚寒模型较稳定，并与中医证候更接近。     

老年高血压患者脉压与左房构型改变的相关研究

目的探讨老年高血压患者脉压(PP)与左房构型改变的相关关系.方法对63例老年高血压患者进行血压测量,记录并计算收缩压(SBP)、舒张压(DBP)和脉压PP;用超声心动图技术对心脏各参数进行测量,包括左房内径(LAD),左房内径指数(LADI),左室重量指数(LVMI)等.将PP≥60mmHg的患者33例列为A组,PP＜60mmHg患者30例列为B组.结果A组中LAD,LADI显著大于B组(P＜0.01).LADI与SBP,PP和LVMI呈密切正相关(r分别为0.58,0.52和0.51前者P＜0.001,后2者P＜0.01),与年龄、病程相关性相对较弱(r分别为0.38和0.31,P＜0.05).结论老年高血压患者PP与左房构型改变密切相关.     

Missing Omo L338y‐6 occipital‐marginal sinus drainage pattern: Ground sectioning,computer tomography scanning,and the original fossil fail to show it

The Omo L338y‐6 occipital region has been recently studied by White and Falk ( 1999 ), who claim that it shows a readily identifiable enlarged left occipital‐marginal sinus (O/M). These observations are contrary to the direct observations of previous investigators (Rak and Howell, 1978 ; Kimbel, 1984 ; Holloway, 1981 ; Holloway, 1988 ). White and Falk ( 1999 ) further argue that the presence of this enlarged O/M strongly suggests that the Omo L338y‐6 hominid was indeed a “robust” Australopithecus. We used direct sectioning and CT scanning to analyze magnified sections of a high‐quality first‐generation cast of the newly cleaned original fossil. These methods fail to show any evidence of a morphological landmark that can be interpreted as an enlarged O/M, either as an eminence or a sulcus. In contrast, the same techniques used with both SK 1585 and OH5 (“robust” Australopithecus with an enlarged O/M) show extremely visible and palpable enlarged O/M's. Examination of the original Omo fossil confirms that it lacks an O/M. This evidence clearly shows that an enlarged O/M cannot be identified on either the original fossil or a first‐generation cast, although this does not rule out the possibility that the Omo L338y‐6 hominid was a “robust” Australopithecus. We believe that the differences between observers regarding this feature are most probably due to displacement caused by a crack and the different source materials employed, i.e., the difference between a first‐generation cast of the original fossil and a third‐ or fourth‐generation cast of the endocast made two decades ago. Anat Rec 266:249–257, 2002. © 2002 Wiley‐Liss, Inc.     

基于Blog思想构建协作式学习资源库

如何在网络教学环境下充分发挥协作式学习的特点?文章从Blog(即网络日志)这一新的交流方式得到启发,探讨了基于Struts框架构建协作式学习资源库的原理及其实现过程.     

脑电图自动诊断研究

目的：本文介绍一种新的脑电图自动诊断系统。方法：它基于一种能识别脑电图波形特征、波幅分布、脑波周期特性和脑波节律特征的分析算法实行脑电特征抽取，再应用一种非线性几何分类识别算法（Ｋ 近邻法）进行脑电图的定量诊断。结果：对３０９例成年人脑电图随机划分为训练组和考核组，应用该脑电图自动诊断系统和脑电图医师人工诊断对照分析，在正常脑电图和轻度异常脑电图之间的正确判别率在训练组是９５．５％，考核组是６４．７％；在考核组的正常脑电图和轻度异常脑电图之间，正常脑电权重指数的判别效果的Ｚ分数是１．４９，轻度异常脑电权重指数的判别效果的Ｚ分数是１．４３（这意味着正确诊断率大于９０％）。结论：以上结果说明该方法已达到临床实用的价值。该系统也能够应用于辨别其它类型脑电图，还具有简便的在线自学能力。     

胃癌生长中组织学类型和生长方式的变化

通过62例粘膜下层早期胃癌和342例进展期癌的光镜观察，发现：1，部分胃癌在向深层发展中，组织学类型可以转变；2，胃癌生长方式与癌组织所在部位（层次）、组织学类型有关，同一病例粘膜层癌和深层癌的生长方式可以不同。结论：胃癌的生长是一个动态变化过程．形态学上表现为组织学类型和生长方式的改变。     

Value recognition and eating patterns of Kimchi in female middle school students and their mothers

This study analyzed Kimchi eating culture in 178 households with female middle school children located in Incheon and Seosan areas, investigated the Kimchi eating patterns of female middle school students, and also analyzed the differences in value recognition for Kimchi between mothers and their female middle school students. Results showed that 23.0% of subject households answered eat Kimchi at every meal and the main reason for eating Kimchi in most households was good for taste. Most households made their own Kimchi, and only 12.3% of households bought Kimchi. Subject households preferred hot and spicy taste (34.8%) and pleasing taste (20.2%), and 44.4% of middle school children answered as eating Kimchi at every meal, and the source for information on Kimchi was home in 51.6% and mass media in 33.7%, suggesting the lack of school education. Both mothers and their female middle school students placed high value on Kimchi for its nutritional aspect and on Kimchi from the market for its convenience. Mothers showed significantly higher value (p<0.05) on the storage aspect of Kimchi compared to their middle school students, and female middle school students showed significantly higher value (p<0.05) on the value recognition for Kimchi as an international food compared to their mothers. Also, the value for hot pepper powder was high among other additional ingredients, and both mothers and middle school students had high values for Kimchi stew among other food dishes using Kimchi, and middle school students showed higher values (p<0.001) on foreign dishes using Kimchi such as Kimchi pizza and Kimchi spaghetti compared to the mothers group. Therefore, based on these results, the development of educational programs on Kimchi is needed not only at home but also at schools, by re-emphasizing the importance of value recognition for KImchi in our food culture.     

Argyrophilic nucleolar organizer region (AgNOR) area per nucleus as a prognostic factor in breast cancer

Whether argyrophilic nucleolar organizer region (AgNOR) is a predictor of prognosis in breast cancer is controversial. The semiquantitative procedure used to calculate interphasic argyrophilic dots optically is neither reliable nor reproducible. We measured the mean area of AgNOR dots, the mean AgNOR area per nucleus (MA), and the mean AgNOR number per nucleus (MN) by automated image analysis in specimens from 131 patients with breast cancer. Higher MA (>7.41 pun²), detected in 22 (16.8%) of 131 patients, did not correlate with clinicobiologic variables, except for DNA ploidy status. Overall survival was significantly better in patients with lower MA than in those with higher MA. On multivariate analysis, MA was a significant independent factor, followed by nodal status. These findings indicate that expression of AgNOR should be evaluated in terms of area occupied and that the mean area of AgNOR per nucleus (MA) is an important prognostic factor in the overall survival of breast cancer patients. © 1995 Wiley-Liss, Inc.     

78例垂体瘤的眼部表现临床分析

目的：探讨垂体瘤的眼部表现。方法：对78例垂体瘤患者进行视力、眼底、荧光素眼底血管造影(fundus fluorescein angiography，FFA)、视野、及图形视诱发电位(pattern visual evoked potential，PVEP)检查。结果：视力下降占76．9％；眼底视神经病变占51．9纷，视野损害占67．3％，PVEP异常占89．2％。23．1％患者以眼部异常表现为首诊症状，其中19．2％曾被诊断为眼科疾病。结论：对不明原因视力下降、视野缺损或视神经病变的患者，应常规进行视力、视野、眼底及PVEP检查，结合鞍区CT或MR，避免漏诊、误诊。