二氯双（三笨基膦）合铂的合成及应甩

本文确定了硅氢化反应催化剂二氯双(三苯基膦)合铂的合成路线及合成工艺。同时研究了它在硅氢加成中的应用，结果表明以二氯双(三苯基膦)合铂代替氯铂酸异丙醇体系，使某些反应的产率有较大提高。并对硅烷偶联剂及功能有机硅化物的发展可以起促进作用。     

酸析-絮凝法处理青霉素、头孢废液的实验研究

采用酸析-絮凝法预处理废液。研究发现当单独处理青霉素废液,COD去除率平均为66.9%,但废液pH值不稳定。而头孢废液处理效果不明显。将两种废液混合处理取得了良好的效果,COD去除率平均达到了89.3%,且pH值比较稳定。达到预处理目的,大大降低了处理费用。     

熟悉的地方，我看到了风景

有时候,总是找不到一种语言能够诠释自己的悲伤;有时候,总是找不到一种方式能够释放自己的沉重。于是,喜欢透过斑驳的夜色,沿着记忆的纹路,细数自己昨日的幸福。这一切,只因为,我是一名教师,但我不爱它。教师这个职业,说起来圣洁,听起来光彩,     

面对学生不太愿意质事咋办？

在学校的管理中,班主任担负着极其重要的作用,一个班级的班风、学风的好坏与班主任有着极其密切的关系。笔者对在北大附属实验学校担任班主任工作一年期间的酸甜苦辣的确感受很深,面对学生不太愿意的事该如何处理,是任职来思考最多的问题。     

Relationship between hyperuricemia and metabolic syndrome

Objective: To investigate the relationship between metabolic syndrome and hyperuricemia. Methods: A total of 2 374 subjects who received health examination in our hospital from Jan. 2004 to Dec. 2006 were enrolled in our study. Hyperuricemia is defined as ≥7 mg/dl (in men) or ≥6.0 mg/dl (in women). Metabolic syndrome was defined using AHA/NHLBI (American Heart Association/National Heart, Lung, and Blood Institute) criteria. Results: (1) The overall prevalence of hyperuricemia was 13.10%. The condition was more common in men than in women (19.07% vs 3.42%). (2) Among men, uric acid concentration is statistically significantly positively correlated with waist circumference, blood pressure, and triglyceride. Uric acid is negatively correlated with serum high-density lipoprotein-cholesterol (HDL-C). Uric acid concentration is most strongly correlated with serum triglyceride (r=0.379) and waist circumference (r=0.297). Among women, statistically significant positive correlations were noted for the serum uric acid concentrations with waist circumference, triglyceride and fasting plasma glucose. Serum triglyceride (r=0.329) and waist circumference (r=0.234) are most strongly correlated with uric acid concentrations. (3) Men with hyperuricemia had a 1.634-fold increased risk of metabolic syndrome as compared with those without hyperuricemia odds ratio (OR)=1.634, P=0.000. Women with hyperuricemia had a 1.626-fold increased risk of metabolic syndrome (OR=1.626, P=0.000) as compared with those without hyperuricemia. Conclusion: Hyperuricemia is prevalent among Chinese population. Additionally, serum uric acid is positively associated with metabolic syndrome.     

梦想，在荆棘中绽放

在得知自己荣幸地获得2010年“国家优秀自费留学生奖学金”的那一刻,那1000多个在澳洲的日日夜夜,酸甜苦辣,犹如倒叙的电影,一幕幕映入脑海。     

让小学语文课有趣、有情、有美感

曾经,我们为了追求所谓的轰轰烈烈将之遗忘,为了追求所谓的别出心裁将之忽视,所以,如今的语文课不是像白开水那样乏味,就是像打翻五味瓶那样酸甜苦辣咸兼有。而今,我们幡然醒悟：首先要使语文课变得纯净,然后再让语文课有趣,有情,有美感。     

陆英及其提取物乌索酸对小鼠出血和凝血时间的影响

目的：通过实验研究陆英及其提取物乌索酸对动物出血、凝血时间的影响。方法：分别灌胃给予小鼠陆英水煎剂、乌索酸（15、30、60mg/kg）、生理盐水,每天一次,共给药7天,采用断尾法测定小鼠的出血时间,玻片法测定小鼠的凝血时间。结果：与生理盐水组比较,陆英、乌索酸（15、30、60mg/kg）组均有显著性差异（p〈0.05）。结论：陆英和乌索酸均能明显延长小鼠出血时间和凝血时间,与其活血化瘀功效相符。     

“酸的类比”新考题

解答信息型的实验探究题,一是要明确实验目的,明确了目的,才能根据实验目的确定每一步探究的意义;二是要抓住题中的信息,题中的信息是我们获取这种物质性质的主要来源．     

你爱不爱大白菜?

白菜很普通,这是一种充满世俗味道的蔬菜,一如平凡的人,平凡而有味的生活。有人不怎么在乎这道菜,觉得只要有好吃的,有没有白菜真是无所谓。也有人很喜欢它,哪怕是一桌山珍海味吃