长期力竭运动对大鼠卵巢ER、PR的影响

将动情周期正常的24只SD雌性大鼠(3月龄)随机分为对照组和模型组(各12只),模型组大鼠每日进行一次力竭游泳运动,直到其动情周期抑制,然后定量分析卵巢ER、PR的表达.结果:与对照组相比,力竭运动致动情周期抑制大鼠卵巢颗粒细胞和黄体细胞上ER、PR表达都明显降低.结论:长期力竭运动对卵巢ER、PR的表达具有抑制作用,卵巢颗粒细胞、黄体细胞上ER、PR的表达水平的降低可能是运动性月经失调的发生机制之一.     

谈网络信息资源的编目

当前图书馆对网络信息资源编目的途径有二 :调整已有MARC格式 ,适应网络资源编目新特点 ;创建一套全新的编目格式DublinCore。实现二者之间的转换映射是网络信息资源编目亟待解决的课题之一。表 1。参考文献 3     

A Literature Review of EFL Extensive Reading and Its Implementation in China

Extensive reading(ER) is regarded as an essential way of language input for learners in EFL teaching context. Due to various practical factors, the implementation of ER instruction in China is still far from being satisfactory. With an elaboration on the definition and pedagogical significance of ER, this paper unveils several major problems existing in the Chinese university English ER instruction and proposes respective solutions.     

基于Informix ER机制的数据库远程复制技术

远程数据库复制是实现数据容灾的重要技术手段之一,在数据容灾、数据仓库等业务中广泛采用。随着福建省住房公积金数据大集中建设工作的开展,怎样构建一个高效安全的数据库远程复制系统来进行数据的容灾、整合显得尤其重要和迫切。本文详细介绍了Informix数据库远程复制技术,详细阐述了Informix ER的原理、特点、适用模式和部署方式,并总结Informix ER在实际环境中部署、运行和维护的关键要点。     

新课标下信息技术课网上考试的设计与开发

使用PHP+MySQL技术,设计B/S结构的网上考试系统,不但可以实现高中信息技术选择题、填空题、Excel操作题的出卷、试卷管理和阅卷,而且无须安装客户端,方便了系统的维护。     

Estrogen receptor expression in adrenocortical carcinoma

Objective: Adrenocortical carcinoma (ACC) is a rare but highly malignant tumor, and its diagnosis is mostly delayed and prognosis is poor. We report estrogen receptor (ER) expression in this tumor and our clinical experiences with 17 ACC cases. Methods: The data of the 17 patients (9 females and 8 males, age range from 16 to 69 years, mean age of 42.6 years) with ACC were reviewed, and symptoms, diagnostic procedures, treatment, and results of follow-up were evaluated. Immunohistochemistry was used to detect ER expression in tumor samples from the 17 patients. Results: At the time of diagnosis, 4 tumors were classified as Stage Ⅰ, 4 as Stage Ⅱ, 3 as Stage Ⅲ, and 6 as Stage Ⅳ. Eight patients demonstrated positive nuclear immunostaining of ER. The prognosis of patients with ER positive was significantly better (P<0.05) than that of patients with ER negative, with 1- and 5-year survival rates at 86% and 60% for ER-positive patients, and 38% and 0% for ER-negative patients, respectively. Conclusion: ER-positivity may be one of the factors associated with a worse prognosis of ACC.     

A Literature Review of EFL Extensive Reading and Its Implementation in China

Extensive reading (ER) is regarded as an essential way of language input for learners in EFL teaching context. Due to various practical factors, the implementation of ER instruction in China is still f...     

消化道癌雌孕激素受体阴阳性细胞的超微结构比较

取大肠管状腺癌Ⅱ级,无淋巴结转移者新鲜标本14例,以酶联组化法证实雌激素与孕激素受体均阳性者或均阴性者各7例,进行透射电镜下的超微结构观察。结果表明:受体阳性细胞、核暗、常染色质增多,呈细颗粒状,核仁以细颗粒状物为主。受体阴性细胞浆内游离核糖体明显增多。超微结构的不同提示两类癌细胞在代谢类型上存在着差异。     

PID+Smith预估补偿在肥料包装称重系统中应用

本文以包装肥料称重系统的工艺流程为例阐述了应用PID Smith预估补偿的方法克服在生产流程由于传动、机械等原因产生系统输出的滞后,从而减少称重系统的重量误差,大大提高系统输出的精度,使得误差控制在要求范围内。