CORBA技术在TMN中的应用

1 TMN在我国应用中遇到的问题 我国的电信网络十分复杂：第一,地域广,规模大;第二,由众多网络运营商提供不同专业、不同业务的网络;第三,各种网络由多个厂商的设备组成,甚至同一网络也由不同厂商的设备组成。因此,TMN的技术和标准必须建立在多个厂商、多种网络的基础之上。解决网管系统之间的互联、互操作问题是实现高层次、综合性网络管理的关键所在。     

薄窗型多阳极气体探测器研究进展

薄窗型气体探测器是最近发展并用于低能量加速器质谱探测技术。该探测器的入射窗采用氮化硅膜，薄而均匀，分辨率高，目前已在低能量粒子探测技术中得到初步应用，显示出广泛的应用前景。本文主要从薄窗型气体探测器基本原理、薄氮化硅膜与Mylar膜的对比、不同质子数Z的低能量粒子脉冲高度对比、薄窗型气体探测器与硅探测器的对比，以及应用等方面进行阐述。     

加速器质谱法测量99Tc

99Tc is a fission product, and it has high fission yield (6%) and very long half-life (2.1×105 a). With the movement of nucleus, the concentration of 99Tc is increasing in the circumstance. So it's important to measure the concentration of 99Tc in the circumstance, and accelerator mass spectrometry (AMS) might be the best method for 99Tc measurement. The 93Nb is used for AMS instrument normalization, sample matrix. And we used the difference of energy loss and deducting the isotope to measure the 99Tc in a series of standard samples. And the results show that the AMS is the feasible measurement method.     

加速器质谱测量的方案设计

加速器质谱系统(AMS)测量的核心问题是排除同位素、同量异位素及其它本底的干扰.由于实验条件的限制,这些干扰在进入探测器之前不能被完全排除,特别是在中重核素的测量中,干扰本底更为严重.近年来奥地利、澳大利亚、加拿大等国家的实验室对特定样品中182Hf[1]、239Pu[2]、237Np[2]和236U[4]等重核的研究中,在实验谱上观测到许多未知峰的严重干扰.中国原子能院在做99Tc的实验时也观测到此种情况[5].为了能够较准确而迅速地在束确定实验谱峰所对应的核素,减轻实验工作量和节省时间,有必要对加速器质谱测量进行优化方案设计.     

中国原子能科学研究院加速器质谱工作进展

The measurement method for some radioisotope such as 99Tc, 182Hf, 151Sm is developing in China Institute of Atomic Energy (CIAE) accelerator mass spectrometry (AMS) system, and applications in the fields of nuclear physics, geosciences, life science and materials science is carried out. The brief introduction of these methods and applications are described in this paper.     

加速器质谱法测定北京地区灰岩的侵蚀速率

36Cl, the long-lived radioactive nuclide, exists abroadly in atmosphere and lithosphere. Erosions and exposure ages of rocks can be determined by measuring 36Cl concentration in rocks. In recent years, accelerator mass spectrometry (AMS) is the only effective tool to measure 36Cl. In the present work, the method of 36Cl measurement with AMS was researched, and the erosion rate of limestone at Shihuadong region of Beijing City was calculated with the method, the result obtained is (1.33±0.28)×10-5 m·a-1.     

离子交换树脂相分光光度法测定水中的铅

利用铅－碘络合物在离子交换树脂相进行分光光度测定,２００ｍｌ试液中,５￣１００μｇ铅服从Ｂｅｅｒ定律,铋的干扰用ＤＴＰＡ－Ｃｕ消除。应用于水样中铅的测定,方法简便快速。     

加速器质谱测量93Zr的刻度研究

A method of determination for ⁹³Zr/⁹²Zr ratio by multi-collector inductively plasma mass spectrometry (MC-ICP-MS) was described in this paper. A ⁹³Zr/⁹²Zr ratio of (2.75±0.07)×10^－5 was obtained in the original sample for AMS measurement and its relative standard error was 2.5%. Considered the contribute of above-thermal neutron, a calculated ⁹³Zr/⁹²Zr ratio of 2.56×10^－5 was obtained and it was according with measurement of the result. The results showed that it can be used for AMS measurement standards sample preparation. A series 93Zr standards sample for AMS measurement were diluted by irradiated sample with enriched 92Zr.     

连续油管技术在元坝气田的应用

近年来随着连续油管技术的较快发展,其在修井、完井、增产、采输等石油工程领域得到了广泛应用。与传统修井相比,连续油管技术在超深井、小井眼井及带压油气井中对复杂问题的处理具有不可比拟的优势。针对元坝气田气井压力高、井深、井眼小、工况复杂等特点,分析了采用连续油管技术较常规修井的优势,通过连续油管技术方案优化,形成了适合于解决元坝气田复杂井况的连续油管解堵技术和复杂井筒处理技术,并在多口井进行了成功应用实践,为元坝气田安全经济高效开发提供了有力技术支撑。