Misoprostol-is more research needed?          下载免费PDF全文

Moore ML 《The Journal of perinatal education》2002,11(3):43-47

Misoprostol (Cytotec) is a synthetic prostaglandin E1 analogue that was designed for the prevention and treatment of peptic ulcer associated with the use of nonsteroidal anti-inflammatory drugs. In obstetrics, misoprostol has been administered for induction of first and second trimester abortion, for induction of labor in the third trimester, and to control postpartum hemorrhage. None of these uses has been approved by the Food and Drug Administration. Nevertheless, misoprostol is widely used in the United States and throughout the world. Advantages are cited as reduced rate of cesareans, shorter time from induction to birth and, particularly in developing countries, lower cost, oral, vaginal or rectal administration, and stability without refrigeration. Disadvantages are uterine hyperstimulation and, in rare instances, uterine rupture and death. Mothers should be informed of both the risks and the possible benefits of misoprostol. Further research with large samples is necessary to determine whether the risks outweigh any possible benefits.  相似文献   

Coding of feature and no-feature events by pigeons performing a delayed conditional discrimination     

Lou M. Sherburne  Thomas R. Zentall 《Learning & behavior》1993,21(2):92-100

Pigeons’ performance of a delayed conditional discrimination with presence versus absence of conditional (sample) stimuli was examined in two experiments. The pigeons showed steeper retention functions with feature (i.e., presence) samples (either food or yellow) than with no-feature (i.e., absence) samples (either no food or no yellow). These results suggest that pigeons code features and respond only by default to test stimuli (comparisons) associated with no features. In contrast, the overall superiority of performance on no-feature-sample trials compared with feature-sample trials in both the food/no-food- and yellow/no-yellow-sample tasks was reversed at a 0-sec delay in the food/no-food-sample group, but not in the yellow/non-yellow-sample group. This difference in results with hedonic versus nonhedonic samples suggests that the crossover in delay performance on food/no-food-sample trials is produced by the formation of backward associations between the food-associated comparison stimulus and the food sample.  相似文献   

刍议高校学风建设——西南联大办学成就启示     

罗婷  钟丽萍 《江西广播电视大学学报》2007,36(4):58-60

加强高校的学风建设是高校改革和发展的一个永恒主题。西南联大办学成就给我们的启示是:当代高校学风建设必须充分发挥学生在学风建设中的主体作用;充分发挥教师在学风建设中的主导作用;完善规章制度,加强教学管理;加强校园文化生活建设,优化育人环境。  相似文献   

提高计算机上机实验效果的探索   总被引：1，自引：0，他引：1  

楼建忠  朱墨池  李瑞东  邱晓华 《金华职业技术学院学报》2001,1(4):106-107,123

本文主要讨论了影响上机实验效果的三大因素，环境因素、学生因素和教师因素。其中教师因素起主导作用，提高教师的积极性和教师的计算机应用水平至关重要，当然学生、环境因素也不可忽视，只有综合考虑它们的共同作用，才能取得良好的上机实验效果。  相似文献   

一个实用的网上投票系统     

竺士蒙  吕鑫  娄嘉豪  闻立波 《宁波职业技术学院学报》2002,2(4):95-97

我们为北仑区电信杯网页设计大赛设计了一个主页。该主页界面简单，主要是一些网页大赛优秀作品的链接，并具有在线投票功能，可以让网友参与评分。现已被北仑港网站（http://www.blport.net.cn）选用。本叙述其设计过程。  相似文献   

The relative effects of pre- and postattention directing devices on learning from a “walk-through” museum exhibit     

John J. Koran  Jeffrey R. Lehman  Lynn D. Shafer  Mary Lou Koran 《科学教学研究杂志》1983,20(4):341-346

Twenty-eight seventh and eighth grade students were randomly assigned to two treatments and a control as they entered the Florida State Museum. All subjects were given set induction materials saying in effect: (1) Treatment-Study the wall panel which is part of the cave exhibit and describes the many biologic relationships and organisms in the cave at the cave entrance. Continue into the cave and study the habitat. When you exit the cave you will be given a test to see how much you learned; (2) Treatment II-Enter the cave and study that habitat. When you exit at the other end, study the wall panel which is part of the cave exit and describes the many biologic relationships and organisms in the cave. After studying this panel you will be given a test to see how much you learned; (3) Control-You will take a walk through exhibits depicting a variety of Florida Habitats and later see a film on the Habitats of Florida that are represented in the museum. Then you will be given a test to determine how much you know about one type of habitat. Both treatments and the control spent equivalent time at their tasks and were confronted with either the cave exhibit as described or the equivalent control experiences. A 25 item criterion test was designed to measure the acquisition of conceptual and factual knowledge and specific attentional factors relative to both the cave and the instructional panel. A Kr-20 indicated that this instrument had a reliability coefficient of 0.80. It was anticipated that the panel, used as an attention directing and controlling device prior to entering the cave (Treatment I) or upon exiting the cave (Treatment II), would function as a forward-shaping or backward review prompting adjunct, hence both should be significantly more effective than the control. This was confirmed (df 2,28; F 8.09) p < 0.01. It was also expected that the forward shaping panel would be more effective than the backward review panel in the tradition of inserted questions in prose research. Although the differences were in this direction, they were not significant (p≤ 0.10).  相似文献   

清末台州三名彦与京师大学堂     

楼波 《台州学院学报》2003,25(4):77-80

京师大学堂的创办,开中国大学之先河,在中国近代教育史上具有划时代的意义。台州的王舟瑶、喻长霖、章(?)。三位名彦曾相继投身于京师大学堂的教育事业,他们在教学和管理上作出了应有的贡献,对京师大学堂的发展和壮大起了积极的作用。  相似文献   

鸢尾紫色素的提取与理化性质研究   总被引：2，自引：0，他引：2  

李璐  罗琴 《楚雄师范学院学报》2002,17(3):63-66

以高原鸢尾花为原料，提取紫色色素，并对紫色色素的理化性质进行了研究。结果表明色素具有较好的稳定性，具有一定的开发利用价值。  相似文献   

高职公共实训基地建设的目标定位及管理体制与机制     

楼一峰 《职教通讯(江苏技术师范学院学报)》2007,(3):20-21,31

公共实训基地是高职教育与培训不可或缺的办学条件,是为高职院校、企业行业提供实践教学、技术培训、技能鉴定和技术服务等活动的重要保障与主要载体。因此,必须充分认识高职教育公共实训基地的重要性及其现实意义,积极探索其建设与管理的体制与机制,在高技能人才和高素质劳动者的培养培训中发挥重要作用。  相似文献   

终身教育理论视野中的远程教育   总被引：3，自引：0，他引：3  

楼一峰 《现代远距离教育》2005,(5):18-21

远程教育为中国教育带来了改革的契机,也必将对促进高等教育大众化、普及化;健全终身教育体系;推进人的全面发展产生影响。同时,在发展远程教育中,人们不能仅仅关注采用多少先进的技术手段,更要关注新手段的采用对教育本身的影响。如:学生的自主学习系统、管理制度和管理手段、资源共享等,使中国远程教育走上可持续发展之路。  相似文献