用于检测盐酸克伦特罗残留的免疫传感器感受器部件的研制

为研制用于检测农产品中盐酸克伦特罗残留的免疫传感器的分子识别元件———感受器 ,用二醋酸纤维素作为载体支架结构 ,戊二醛作为交联剂 ,己二胺作为制孔剂 ,对制备载体膜的最佳方案进行了筛选 ,制备出了符合标准的载体膜。而后用效价为 1∶4 0 0的抗盐酸克伦特罗抗体包被膜与酶标抗原偶联 ,在测定体系中检测过氧化氢的减少量 ,以衡量感受器部件的灵敏度 ,并用标准品测定其最低检测限 ,同时设质控膜。结果表明 ,质控膜和测定膜的电流变化值差异显著 (P <0 .0 5 ) ,感受器部件反应灵敏 ,最低检测限达 0 .3μg/L。     

基础教育新课程实施的影响因素分析——重庆北碚实验区的个案调查

分析课程实施的影响因素对推动课程改革的发展来说十分重要.本文对重庆北碚实验区的两所学校进行了个案调查,从新课程本身的特征、宏观社会以及学校内部三个层面出发,分析了影响新课程改革的若干主要因素.就新课程的特征而言,尽管教师认为这次改革十分必要,但改革规模宏大,而且新课程实用性欠佳.从学校所处的宏观脉络来看,新课程改革的决策参与机制、教师发展与资源支持仍需改进.为促进新课程的实施状况,学校还应该进一步发挥校长的课程领导职能,改善学校组织结构,同时发展合作的教师文化.     

试论侦检关系立法改革

1996年修改后的刑事诉讼法,借鉴了当事人主义诉讼模式的做法,要求检察官在法庭上亲自举证,通过事实说服法官,从而更有效地行使其追诉犯罪的职能.然而,我国刑事诉讼法中关于侦检关系的规定,造成检察机关与侦查机关难以形成合力,共同服务于公诉活动,在一定程度上削弱了检察官的公诉职能.考察国外的做法,我国应重新调整侦检关系,强化公诉职能,加强检察权对侦查权的控制,改革和完善侦检关系.     

Moving to Prosperity

<正>A huge resettlement program is underway in Shaanxi Whenever there is heavy rain, the residents of villages in the southern part of northwest China’s Shaanxi Province take turns watching for mudslides and landslides     

Under Siege

正Dealing with household garbage has become a growing headache for Chinese cities A series of photos named Rubbish-besieged City, which won Wang Jiuliang the Golden Award for Excellence at the Lianzhou International Photo Festival 2009, has attracted considerable public attention after being posted on Tianya.cn, a popular     

Stuck in the Middle

<正>Better-paid urban residents aren’t enjoying the life they have expected Sun Lijun works as a software engineer at a Beijing-based IT company and earns around 8,000 yuan ($1,254) a month. His relatively high income means his friends and colleagues, as well as China’s statistical agencies,     

Moving to Prosperity A huge resettlement program is underway in Shaanxi

Whenever there is heavy rain,the residents of villages in the southern part of northwest China's Shaanxi Province take turns watching for mudslides and landslides.At the first hint of danger,they ring gongs and begin to evacuate the villages.Year in and year out,villagers in this region live in constant fear of disaster.     

A LONG-WAY CAMPAIGN

<正>China is sparing no efforts to combat corruption under a tough situation Zhang Jingli, former Deputy Director of the State Food and Drug Administration, was dismissed from     

A New Dawn For NGOs

<正>Registration requirements relaxed for charity work After years of expectation,a number of NGOs in China welcomed the good news government approval will soon become easier.On July 4,Minister of Civil Affairs Li     

Living Without Possession

<正>More young people regard renting as a lifestyle Yang Zheng is a senior at Tsinghua University. He is considering renting an apartment in Beijing with a friend after graduation.