未来学校从今天开始(二)

一、学习从交往开始 传统的教育学何时思考过,教育与教学始于包括教师在内的所有人必须遵从的交往法则?一所师范大学,她所教授的课程可不可以称之为教有关个性之间交往和沟通的教程?在许多教师进修学院里,听众已经要求讲授这门课。因为在生活中,那些思考应该怎样着手交往的人往往获得成功,现在应该把这个教给大家。 交往是信息的交流,这种信息可以是多的,少的,持续的或短暂的,远距离或近距离的,通过媒介的或间     

高强库间隙训练后人体骨骼肌纤维类型的改变

前言人体骨骼肌对耐力训练的适应已有广泛报道,已经观察到耐力运动员具有较多的Ⅰ型纤维(Gollnick等,1972:Costll等,1976)和有规律的耐力训练主要引起与提高长时间紧张运动能力有关的一些骨骼肌酶活     

含巯基胞嘧啶的多核苷酸及单核苷酸对人癌细胞株的抑制作用(摘要)

5巯基胞嘧啶多核苷酸(5-Mercaptopolycytidylic acid,MPC)是DNA和RNA聚合酶的强有力抑制剂,亦能抑制白血病小鼠的骨髓和脾细胞的集落形成。德国临床试用表明MPC对小儿急性淋巴细胞性白血病有一定效果。本文报道MPC体外对人癌细胞株(肺癌A549,大肠癌HT-29,成骨肉瘤HOS)及正常羊膜细胞株(WISH)的抑制作用,并与Poly Ⅰ·MPC(系由等分子量的MPC和多次黄嘌呤核苷酸合成)作比较。为了了解这种抑癌作用究系MPC本身抑或由其降解产物所致,还同时观察了MPC、5巯基胞嘧啶核苷酸(SH~5-CMP)及5巯基胞嘧啶对上述细胞株的影响。     

光电化学太阳电池

我们每天都要从太阳获取大量的能量。有人计算过,太阳在两周时间内给予地球的能量,大约相当于地球最初可以提供给人们的化石燃料所含能量的总和。从二十世纪五十年代起,人们就一直非常重视利用光电化学效应将太阳能直接转变成电能或合成燃料的研究,随着能源危机的不断提出,这个领域内的研究也一天比一天变得更加普遍和重要。本文将介绍一种实用的太阳电池的简易制备方法,同时。回顾关于太阳能转变方面的一些知识。     

The relationship between qualified personnel and self-reported implementation of recommended physical education practices and programs in U.S. schools

The authors analyzed data from the School Health Policies and Programs Study 2000 to assess the associations between the presence of a district physical education coordinator and district-level physical education policies and practices recommended by federal government agencies and national organizations. The authors also examined the relationship between teacher qualifications and staff development related to physical education and self-reported implementation of recommended teachingpractices. District-level data were collected by self-administered mail questionnaires from a nationally representative sample of school districts. Classroom-level data were collected by computer-assisted personal interviews with teachers of randomly selected classes in elementary schools and randomly selected required physical education courses in middle/junior high and senior high schools. Nearly two thirds (62.2%) of districts had a physical education coordinator, and those were generally more likely than other districts to report having policies and practices that corresponded with national recommendations for high-quality physical education programs. More than two thirds of teachers (66.9%) met the criteria for teacher qualifications based on their education and certification. These teachers were more likely than others to report use of certain recommended physical education teaching practices. Teachers who participated in staff development also were more likely to use recommended teaching practices in their classrooms. Using a district physical education coordinator and teachers with appropriate qualifications as well as offering staff development opportunities on physical education may enhance school physical education programs.     

A single session of resistance exercise does not reduce postprandial lipaemia

This study investigated the effect of a single session of resistance exercise on postprandial lipaemia. Eleven healthy normolipidaemic men with a mean age of 23 (standard error = 1.4) years performed two trials at least 1 week apart in a counterbalanced randomized design. In each trial, participants consumed a test meal (1.2 g fat, 1.1 g carbohydrate, 0.2 g protein and 68 kJ x kg(-1) body mass) between 08.00 and 09.00 h following a 12 h fast. The afternoon before one trial, the participants performed an 88 min bout of resistance exercise. Before the other trial, the participants were inactive (control trial). Resistance exercise was performed using free weights and included four sets of 10 repetitions of each of 11 exercises. Sets were performed at 80% of 10-repetition maximum with a 2 min work and rest interval. Venous blood samples were obtained in the fasted state and at intervals for 6 h postprandially. Fasting plasma triacylglycerol (TAG) concentration did not differ significantly between control (1.03 +/- 0.13 mmol x l(-1)) and exercise (0.94 +/- 0.09 mmol x l(-1)) trials (mean +/- standard error). Similarly, the 6 h total area under the plasma TAG concentration versus time curve did not differ significantly between the control (9.84 +/- 1.40 mmol l(-1) x 6 h(-1)) and exercise (9.38 +/- 1.12 mmol x l(-1) x 6 h(-1)) trials. These findings suggest that a single session of resistance exercise does not reduce postprandial lipaemia.