卵巢上皮癌组织COX-2的表达及与MVD的关系

目的:探讨卵巢上皮癌组织中环氧合酶-2(COX-2)表达及其与微血管密度(MVD)的关系。方法:应用免疫组织化学技术检测65例卵巢上皮癌组织和18例正常卵巢组织中COX-2的表达,并以抗CD34抗体标记微血管内皮细胞测定MVD。结果:卵巢上皮癌组织COX-2表达阳性的比例为73.8%,显著高于正常卵巢组织COX-2表达阳性的比例11.1%(P<0.01)。COX-2阳性表达的卵巢上皮癌组织中的MVD(57.8±18.6)明显高于阴性表达者(37.4±11.2)(P<0.01)。结论:COX-2在卵巢上皮癌组织中高表达,COX-2可促进肿瘤血管生成。     

A Case Study in the Integration of Assessment and General Education: Lessons learned from a complex process

This paper tracks an ongoing, 15-year initiative to reform and assess a general education programme at a regional comprehensive university in the US. The paper identifies four key phases in the process, chronicling emergent challenges, describing key setbacks and highlighting noteworthy successes. The authors identify five key lessons that may prove useful to other institutions planning or currently attempting to integrate assessment into their general education programme, and conclude that designing and implementing general education assessment is more challenging than assessing other programmes in post-secondary settings because it is influenced by more internal and external constituencies than any other assessment process.     

Effects of color in filmed behavior sequences on description and elaboration by liberian schoolboys

Scanlon (1967,1970) found significant color effects when he content analyzed and compared written accounts about achromatic and chromatic versions of the same television programs. The present study which replicated many aspects of Scanlon’s studies but used more rigorous and systematic procedures, confirms Scanlon’s idea as a useful one but does not support Scanlon’s findings. It appears that for some simple cognitive tasks, a chromatic presentation seems to elicit more verbal responses than an achromatic version.     

安康地区中小学英语师资培训分析思考

汇集,研究了安康地区中小学英语师资培训的现状,以相关教育教学理论为依据,对安康地区中小学英语师资培训的现状进行了调查分析。提出了中小学英语师资培训的新举措。为教育发展相对滞后地区的中小学英语师资培训,提供切实可行的改进措施。     

Relationship between the Perception and Reproduction of Body Postures

Abstract

One hundred and seven college women were tested in their ability to recognize a demonstrated body posture from among similar ones and to reproduce demonstrated body postures. Two original tests were devised for this purpose. A low but statistically significant correlation (- .34) was found between the two. In addition, the subjects completed a questionnaire regarding the extent and nature of their motor experience. The extent of the individual's motor experience had a significant role in each of these abilities. The direction to be taken in reproducing the postures was found to be a complicating factor.     

A model of women’s educational factors related to delaying girls’ marriage

Delaying girls’ early marriage is a critical public health and education goal in developing countries, in which their own or their mothers’ education may play an important role. This paper reviews the existing evidence of any relationship between girls’ schooling or women’s literacy education and delayed marriage for themselves or their daughters. The majority of research reports focus on the correlation between girls’ schooling and brides’ age at first marriage. But it is conceivable that adult women’s/mothers’ literacy education also has considerable influence on the age at which their daughters are married. Since this aspect has hitherto not been explicitly investigated, the authors propose a model – based on relevant research about the outcomes of girls’ schooling and women’s literacy education – of the mechanisms that mediate between women’s education and delayed marriage for their daughters. The authors argue for research that will inform policy makers interested in helping girls complete secondary schooling about the potential contributions of adult women’s literacy education to this goal.     

可控整流中晶闸管参数的选择及其应用

晶闸管的选择参数很多,但用于可控整流时,主要是额定电流、额定电压的计算与选择。晶闸管由于过电流过电压能力低,文常常工作在不同的电流波形情况下,给额定电流的选择带来一定的困难,如若额定值选择不当,会造成不必要的损失或浪费。根据实际工作条件,在满足需要的前提下,应尽量降低晶闸管的定额,以减少设备投资。     

Achieving results with a performance‐centered design framework

Working with clients to deliver solutions provides ample opportunity for success as well as failure. This article focuses on how to address three shortcomings that often contribute to performance solutions missing the mark. These shortcomings include (a) the framework used to view, discuss, and analyze performance is too narrow; (b) performance solutions do not address the ineffective habits of performers; and (c) the important process step of design is often improperly defined or even ignored.     

The Sexualized Girl: A Within‐Gender Stereotype Among Elementary School Children

Two studies (conducted in 2013) examined whether elementary‐aged children endorse a within‐gender stereotype about sexualized girls. In Study 1, children (N = 208) ages 6–11 rated sexualized girls as more popular but less intelligent, athletic, and nice compared to nonsexualized girls. These distinctions were stronger for girls and older children, and in accordance with our developmental intergroup theoretical framework, were related to children's cognitive development and media exposure. Study 2 (N = 155) replicated the previous findings using more ecologically valid and realistic images of girls and further explored individual differences in the endorsement of the sexualized girl stereotype. Additional results indicated that the belief that girls should be appearance focused predicted their endorsement of the sexualized girl stereotype.     

足球训练与儿童少年膝关节损伤

通过对天津市业余足球俱乐部和足球学校10-15岁497名业余球员膝关节损伤的调查发现,受伤人数366人,占被调查人数的73．64％;以12岁年龄组发病率最高,占34．92％。运动损伤是影响儿童少年最终成为足球运动员的重要因素之一,应引起足球教练员及练习者的高度重视。