蓝牙技术在便携式伽玛射线全谱仪中应用可行性研究

作者在本文中分析了现有便携式伽玛能谱仪在实际应用中所存在的问题，剖析了最新的蓝牙通信技术，探讨了蓝牙技术在解决该仪器所存在的问题的可行性。     

氡气灾害调查的一些结果

氡气灾害是一种广泛分布的地质灾害。室内氡气浓度偏高会使居民患肺癌的几率增高，而室内氡气主要来自房屋地基所在的地质单元。笔者在美国犹他大学研究所工作期是，研究了瑞丁普朗花岗片麻岩带近地表氡的浓度与铀含量的关系以及铀的分布与居民癌症死亡率之间的相关关系。铀的区域性分布是利用航空伽马能谱测量资料求得的，说明利用航空伽马能谱测量资料开展氡气灾害区域评价的可能性。文中还举例说明氡气调查在制定建设规划方面的作     

Constraints on the luminosities of gamma-ray bursts

Constraints are found on the gamma-ray burst luminosity function from an analysis of the combined BATSE/PVO intensity distribution. If bursts originate in an extended Galactic halo, then the intrinsic luminosity range is narrow, with bursts spanning only a factor of five or less in luminosity. If bursts originate in a simple Friedmann cosmology with = 1 and = 0, then very few luminosity constraints exist.National Research Council Fellow at NASA/MSFC     

Selection effects and tests of repetition (clustering) in the BATSE 1B catalog

A repeater statistic (derived from the two-point angular correlation function and accounting for location errors) is used to identify constraints on the rate of burst repetition from the BATSE 1B catalog. Because of the anisotropic sky exposure, repeating sources should create additional effects in the large-scale distribution of close burst pairs.National Research Council Fellow at NASA/MSFC     

一种新的伽玛能谱测井定量解释方法研究

本文分析了目前常用的γ能谱测井平均含量法、传统剥谱法对不饱和混合矿层（铀、钍、钾元素的含量在矿层中分布不均匀）的定量解释存在的原理缺陷;提出了利用γ能谱测井分离铀、钍、钾元素的定量解释新方法—逐点剥谱的单元层定量解释法,简单讨论了该解释方法涉及的形态系数、换算系数和单元层饱和度的确定,以及反形态系数的计算问题.     

Tests on Application of Soil Magnetic and Integrated Gamma Ray TLD and TC Methods to the Exploration of Sandstone-Type Uranium Deposits

This paper introduces the test results of the soil magnetic survey and the integrated gamma-ray TLD and TC methods for sandstone-type uranium exploration and describes the prospecting mechanism. The tests have proved that these approaches have yielded good results on classifying the sedimentary fades, defining the redox transitional zones and reflecting deep mineralization information. They may probably become new methods on searching for sandstone-type uranium deposits.     

车载伽玛能谱测量数据的小波降噪方法分析

介绍了车载伽玛能谱测量和小波降噪方法,采用MATLAB语言编写了小波降噪程序,并对2006~2007年车载伽玛能谱野外测量数据进行了小波降噪处理,结果表明采用小波分析降低车载伽玛能谱测量数据统计噪声是有效的。     

Density profiles of suspected optical counterparts of gamma-ray bursts

Four suspected optical flashes on archival plates with coordinates within or near to the error boxes of gamma-ray bursts, respectively, are investigated by surface photometry, Their density profiles are shown to be consistent with that of stars of similar magnitude. Hence, the suspected flashes are not likely to be plate defects but real objects on the sky.     

测井技术的应用及其在科学钻探研究中的意义

测井技术是从上世纪20年代发展起来,60年代渐趋成熟,现已被广泛应用于油田、煤田等地质勘探工作中.上世纪开始的DSDP(深海钻探)、ODP(大洋钻探)I、CDP(国际大陆科学钻探计划)、KTB(德国的大陆科学钻探计划)等项目采用测井曲线研究古环境、古气候,确定地层性质等方面取得了进展,极大的拓展了地球物理测井在地质上的应用范围,使测井技术由油气、煤炭测井的地层分析上升到测井地质的成因研究,也渗透到提取古气候信息的领域上.我们在柴达木盆地盐湖科学钻探工程中也采用了测井技术,旨在通过与岩芯多指标对比分析,探索应用其指示意义测井技术在石油、盐类资源普查及古环境研究中.     

Black Hole Hyperaccretion and Gamma-ray Burststwo

Black hole hyperaccretion model is one of the potential candidates for the central engine of gamma-ray bursts. Combined with the complicated explosion phenomena including gamma-ray bursts, gravitational waves, and their electromagnetic counterparts, the results of a series of theoretical studies on this model are briefly reviewed in this paper. At the same time, as the research tools for the subsequent studies on gamma-ray bursts, some important conclusions and formulas are presented.