给合作学习的“不良症状”把脉

随着课程改革的不断深入,“合作学习”逐渐成为课堂教学的亮点,为广大教师所倡导和运用,但在具体操作的过程中,却出现了诸多“不良症状”。重形式轻内容[症状]在一些课堂上,我们常常看到这样的境头:课桌拼起来,学生围坐成马蹄形或圆形(大多数学生是侧着     

网络管理系统中的事件相关性技术分析

事件相关技术是网络管理系统中的一项关键技术,本文通过对代码簿相关模型技术的分析与研究,阐述了事件相关技术的原理及应用。     

幼儿教师心理健康状况的调查研究

通过运用SCL-90症状自评量表，对武汉市102名一线幼儿教师进行调查和分析，发现当前我国幼儿教师总体心理健康形势相当严峻。这一情况应当引起有关部门的重视，并应针对幼儿教师职业的特殊性，综合考虑幼儿教师的正常需求和由于职业特殊性带来的特殊需求，建立合理的制度，从物质和精神上对幼儿教师给予更多的关爱，从而从根本上解决幼儿教师的心理健康问题，以促进我国幼儿教育事业的持续健康发展。     

Investigation of iodine concentration in salt,water and soil along the coast of Zhejiang,China

Objective: We aim to describe the environment iodine concentration in salt, water and soil along Zhejiang Province coast in the China foreland. It will be helpful for us to judge whether this area is insufficient in iodine and universal iodized salt is necessary or not. Methods: We collected iodized salt samples, drinking water samples (tap water in the towns, and well water or spring water in the villages), water samples from different sources (ditches, lakes, rivers) and soil samples through random sampling in June, 2005. Salt, water and soil iodine was detected by arsenic-cerium redox method. Statistical analysis was expressed as mean±SEMby Windows SPSS 13.0. Results: (1) The iodine concentration in salt was 27.9±4.33 mg/kg (n=108). (2) Seventy-five water samples were collected. The water iodine value was 0.6～84.8 μg/L (mean of 11.66 μg/L). The watershed along the Qiantang River has significantly higher iodine content than the water in Lin'an in mountain area (P＜0.01). The iodine content and mean iodine content of tap water, well or spring water and natural water sources were 4.30±2.43 μg/L (n=34), 23.59±27.74 μg/L (n=19)and 12.72±10.72 μg/L (n=22) respectively. This indicated that among environmental water sources, the ditch iodine content was the highest with river water iodine being the lowest (P＜0.01). (3) Soil iodine value was 0.11～2.93 mg/kg (mean of 1.32 mg/kg).Though there was no statistical difference of soil iodine in different districts (P=0.131), soil iodine content correlated positively with water iodine content. Conclusion: Iodine concentration in salt accords with national policy of adding iodine in salt. Foreland has more iodine in water than mountain area. The data reflected that water and soil iodine in foreland area was not high, which suggests universal iodized salt should be necessary. Environment iodine has relatively close association with pollution.     

感冒药的选用

感冒药不能杀死病毒,可以缓解症状。     

貌似“感冒”的小儿“尿感”

刚刚1岁的西西莫名其妙地发起烧来,不仅小脸变得苍白无光,饭量也比以前小了,还不时地出现呕吐和腹泻症状。爸爸觉得他肯定是感冒了,赶忙从家庭药箱里拿出小儿退热片给他服下。一     

防治急性出血性结膜炎10问

1.什么是急性出血性结膜炎?急性出血性结膜炎,俗称红眼病,是世界范围内的流行性传染性眼病,为我国法定丙类传染病。急性出血性结膜炎的特点为接触传染、人群普遍易感、常造成大范围暴发流行。多发于夏秋季,有时可迁延至冬季,各年龄组人群均可感染发病,自然病程短,无特殊治疗药物,愈后较好,极个别的伴有神经系统症状。     

母爱不是选择题

暑假前夕,妈妈来学校看我。当时刚下课,她直接走进教室来接我。就在我收拾课本的时候,她拿起我的手机,读到一条别人误发给我的信息,紧张得脸色都变了。当着还没来得及离开教室的老师和许多同学的面,她大喊道:"我对你失望至极!"我一下子愣了。在老师和同学们诧异的目光中,我尴尬极了。我对妈妈很生气,她为什么不问一下我怎么回事?她不知道,她对我的不尊重不信任,使我深受伤害。放暑假了,妈妈去日本讲学,要     

妙招赶跑“晕动病”

生活中,我们会不可避免地乘车、乘船、乘飞机,如果没有晕的状况我们会一路好心情,可不巧的是,我们有相当一部分人会晕,出现恶心、呕吐、出冷汗等症状,我们习惯性地称这为"晕动病"。"晕了"怎么办呢?嘿,不用急,     

实话实说抑郁症

小王正趴在栏杆上呆呆地看着月亮,忽然有个声音在耳边响起:"在装什么深沉呢?"小王知道这是他的好朋友小李,但他依旧沉默着,不想说话。"到底怎么了?"这一次小李的语气认真了许多。小王回过头静静地和小李对视一会儿,然后转过头去说:"我恐怕是得了抑郁症了。"