The aim of the study is to extend the application area of TEM technology in pipeline defects detection and make 'point detection' develop to'full coverage detection'.The relationship between pipeline defects and TEM signal characteristics is studied and a comparison with the magnetic memory method is made.The results of the TEM detection method and those of the magnetic memory are compared in anomaly detection and the grading of pipeline defects.Good detection results can be achived and the sensitivity and reproducibility can be ensured so long as random errors are controlled to the best in the moving process.

Pipeline corrosion detection technology includes environmental investigation,pipeline detection and mapping,pipe coating integrity tests,tube detection,piping cathodic protection system testing,leak investigation,monitoring and corrosion pipeline safety evaluation.To prevent the fundamental pipeline corrosion in the tube,a buried steel pipeline corrosion protection method is widely used on anti-corrosion coatings plus additional cathodic protection.For buried steel pipeline coating tests and the tube tests,this paper introduces two new technologies about pipeline corrosion tests:synthetic parameter abnormality evaluation and pipe wall thickness TEM detection methods.

<span id="ChDivSummary" name="ChDivSummary" class="abstract-text">目的检测广州市室内外空气中222Rn浓度水平及其子体所致公众有效照射剂量。方法于2003年7月²004年6月,采用CR-39α固体径迹探测器测量广州市201间建筑物室内222Rn累积浓度,计算所致居民年有效剂量当量。结果室内222Rn浓度范围为15.7¹57.9 Bq/m3,平均值为（47.3±23.4）Bq/m3,室外222Rn浓度平均值为（20.5±8.7）Bq/m3。室内外222Rn子体所致居民人均年有效剂量当量为1.322 mSv/a,所致广州市居民集体年有效剂量当量为11 650 man.Sv/a。结论广州市室内222Rn浓度属正常天然本底水平。</span>

It's a good news for the people to implement state standard Ⅲ. China's "11th Five-Year Plan" proposed that energy consumption per GDP declined 20% and a 10% reduction in emissions of selected pollutants during the "11th Five-Year Plan. In such circumstances, to implement strictly state standards Ⅲ is the important measure to build a harmonious society.

综合参数异常评价法是一种不同于其它地面检测的方法.本文在详细阐述了综合参数异常评价法机理的基础上,给出了在几种防腐保温管道上的应用实例.经过多个工程的实际检验证明:"综合参数异常评价法"适用于不同检测环境、输送介质(气相、液相)、规格与材质、防腐(保温)层结构的埋地金属管道的地面检测工作,能够对埋地管道腐蚀与防护状况做出较为完整的评价.

dissertation narrates the theory and application range of The Method of Synthetic Parameters Anomaly Evaluation, and accounts for the application effect through a few cases.

A passive integrating dosimeter with two diffusion cups was applied for detecting 222 Rn and 220 Rn simultaneously. To let both nuclides enter in easily, one of the cups had membrane with higher permebility. However, the other cup with lower permeability membrane could only allow the entering of 222 Rn. Hence, 222 Rn and 220 Rn can be detected simultaneously by such dosimeters.