几种俗称为桃花玉玉石的区别和鉴定     

刘海梅  孙瑞皎  那宝成  李晨 《山东地质》2012,(8):51-54

采用常规宝石学鉴定方法、傅里叶变换红外光谱仪（FTIR）等测试方法,对市场上统称为桃花玉的石英质玉、菱锰矿和蔷薇辉石进行了常规的宝石学、光谱学特征鉴定。结果表明,三者的常规宝石学特征及红外光谱特征等都有明显区别。  相似文献   

Fish physiology and ecology: the contribution of the Leigh Laboratory to the collision of paradigms     

NW Pankhurst  NA Herbert 《新西兰海洋与淡水研究杂志》2013,47(3):392-408

Abstract

The often pragmatic division of studies of function (physiology), and the regulation of distribution and abundance of organisms (ecology), as laboratory and field studies respectively, can create an unhelpful intellectual division that runs the risk of ignoring the interaction of physiology, behaviour and environment that regulates the lives of animals in the wild. This review examines the historical and current contribution of ecophysiological research conducted from the University of Auckland's Leigh Laboratory in bridging these paradigms, and generating new insights into animal function and community organisation. The assessment focuses on endocrine control processes, and metabolic and behavioural responses of fish to artificial and natural stressors, and examines tracks of future research needed to underpin understanding of likely effects of predicted environmental change on individuals and populations.  相似文献   

The Conversion Relationship between the Local Earthquake Magnitude and Surface Wave Magnitude in the Inner Mongolia Digital Seismic Network     

LIU Fang  SU Riy  XU Xiquan  LI Hui  NA Re 《中国地震研究》2019,33(1):86-96

Using 116 earthquakes over M_L3.8 in the Inner Mongolia region from 2008 to 2015, the local earthquake magnitude M_L and surface wave magnitude M_S are remeasured. Based on norm linear regression(SR1 and SR2) and norm(OR) orthogonal regression method, we established the conversion relationship between M_L and M_S. The results were tested with Gaussian disturbance. The result shows that the orthogonal regression method(OR) result has the best fitting curve, and the conversion relation is M_S=0.96 M_L-0.10. The difference between our result and Guo Lücan's(M_S=1.13 M_L-1.08) may be caused by regional tectonic characteristics. M_(S Inner Mongolia) value is significantly higher than the M_(S empirical) value, with an average difference of 0.23, the difference distribution of empirical relation and the rectified relation is in the range of 0.2-0.3.  相似文献   

大姚铜矿紫色砂岩的压拉变形特性试验研究     

谢强  余贤斌  张永兴  纳裕康 《岩土力学》2007,28(10):2155-2160

介绍了一种可对同一岩石试样分别进行单轴压缩和单轴拉伸实验的试验装置,该装置改变了因岩样不同而导致的压拉试验结果无法进行直接对比分析的现状,为岩石从受压转向受拉或从受拉转向受压的过渡特性的试验研究提供了可能。以云南大姚铜矿紫色砂岩为例,研究了其在压拉试验条件下的变形特性。结果表明：该种岩石从压缩到拉伸阶段弹模变化不大,但压缩泊松比与拉伸泊松比的变化较为复杂。试验同时证明该类岩石的压缩与拉伸并不是截然不同的两种过程,单轴压缩试验的卸载曲线与直接拉伸试验的加载曲线具有很好的连续性。  相似文献   

陆相盆地主要沉积微相的测井特征   总被引：24，自引：1，他引：23  

于民凤  程日辉  那晓红 《世界地质》2005,24(2):182-187

通过研究自然电位和视电阻率曲线的响应特征,将我国陆相盆地的3个陆相组：冲积相组、过渡相组、湖泊相组,进一步划分出27个沉积微相。并论述了它们的测井曲线特征,建立了测井沉积微相模式。它们具有在自然电位曲线和视电阻率曲线上的可识别特征。测井沉积微相模式为陆相盆地沉积学和定量测井沉积学的深入研究可提供一个参考模式。  相似文献   

英国矿产资源规划与战略研究          下载免费PDF全文

牛颖超  那春光 《地质论评》2022,68(6):2022112016-2022112016

英国是世界上编制矿产资源规划较早的国家之一，它的规划体系已成为许多国家尤其是英联邦国家建立规划体系的蓝本。本文通过研究英国矿产资源规划体系与管理特征，分析矿产资源发展战略，总结英国矿产资源规划的经验和启示，为我国矿产资源规划编制与管理提出建议。  相似文献