Optical spectrum based measurement of flotation slurry contents   总被引：1，自引：1，他引：0  

Olli Haavisto  Jani Kaartinen  Heikki Hytyniemi 《International Journal of Mineral Processing》2008,88(3-4):80-88

Monitoring and control of a flotation circuit is mainly based on the information gained by assaying the process slurry lines. In flotation plants, usually an X-ray fluorescence analyzer is used to obtain the on-line assays. This article introduces the visual and near-infrared reflectance spectroscopic analysis of the process slurries as a supplementary method which complements the on-line assay information available from an X-ray fluorescence analyzer. It is shown that the spectral information can be used to accurately predict the element contents in the slurry in between successive XRF analyses. Since the spectral measurements can be taken with high frequency as opposed to the sparse X-ray fluorescence analysis, a practically continuous on-line estimate of the slurry contents is reached. These estimates can be used in the plant control to improve the overall performance of the circuits and to yield also economical savings. Additionally, the frequent monitoring of the grades can provide means to eliminate rapid disturbances in the circuits, thus improving the stability of the process.  相似文献   

Consequences of growth variation in northern Baltic herring for assessment and management     

Rahikainen  Mika; Stephenson  Robert L. 《ICES Journal of Marine Science》2004,61(3):338-350

  相似文献   

增长曲线模型中线性估计类所有可容许估计     

李俊海  陈峥  张东华 《中国海洋大学学报(自然科学版)》2003,33(5):815-820

对增长曲线模型中回归矩阵的函数的线性估计进行了研究。在矩阵损失下 ,作者得到了线性估计在一切线性估计类中可容许的充要条件  相似文献   

海洋遥感四维测量应用     

张兆瑛  李铜基 《海洋技术学报》1997,16(3):1-11

机载成象光谱仪遥感海洋是在轨星载海洋传感器定标校验的一种方法。本文研究了海洋航空遥感的四维测量方法，以及实现卫星、飞行遥感和船舶同步测量的重要意义。  相似文献   

an RectificationCHENG Wei(School of Art and     

Law  Henan Polytechn 《海洋预报》2007,(3)

sitively.He thoroughly analyzed and criticized the subjectivism in the party by the Marxism standpoint,the viewpoint and the method.He explained and expounded "seek truth from facts" that it is the soul of Marxism tradition thought to the entire party scientifically,and developed the Marxism scientific spirit.So he has contributed  相似文献   

Organic petrography of graptolite fragments from Turkey     

Fariborz Goodarzi 《Marine and Petroleum Geology》1984,1(3):202-210

The reflectance and bireflectance of graptolite fragments (Silurian-Ordovician) from southeast Turkey were examined and the morphology was described using reflected light microscopy. The dispersion of maximum and minimum reflectance of graptolites sectioned parallel and perpendicular to the bedding was also determined. The graptolites were anisotropic and the anisotropy was stronger for sections perpendicular to the bedding. The graptolite fragments show two types of surface morphology: granular and non-granular. The granular type had a rough surface and granular anisotropy, the non-granular fragments showed a smooth surface and basic anisotropy. The fine internal structure of graptolite was evident under crossed-polars. The reflectance of graptolite increased with depth and was higher than other organic material, e.g. bitumen, found in the same sediment. The present study indicates that the reflectance of graptolite in sediment can be used to determine the maturity of the dediment.  相似文献   

Coastal geomorphic evolution at the Denglou Cape, the Leizhou Peninsula     

Wang Lirong  Zhao Huanting  Song Chaojing  Yuan Jiayi  Yu Hongbing 《海洋学报(英文版)》2002,21(4):597-611

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丽江市地质灾害易发性遥感影像判译   总被引：2，自引：0，他引：2  

JIANG Qin  杨世瑜 《云南地质》2008,27(1):114-119

丽江市地质灾害多发,在滇西北旅游城市中较典型。应用遥感技术对丽江市地质灾害易发性的遥感研究,可突破传统方法,发挥宏观、综合、直观、快速特点,取得较好效果。  相似文献   

GIS和RS技术在湿地资源研究中的应用——以大庆市湿地为例   总被引：2，自引：0，他引：2  

金珊珊  臧淑英 《测绘与空间地理信息》2008,31(1):23-28

以大庆市湿地为研究对象,以地理信息系统和遥感技术为技术平台,介绍了湿地环境因子研究工作程序及湿地现状类型分布研究,分析了地理信息系统和遥感技术在湿地资源研究中的地位和作用,从而为GIS与RS技术在湿地资源应用研究中提供理论支持。  相似文献   

黄土高原西南部陇县—千阳一带崩塌、滑坡地质灾害的遥感影像特征及其分布规律     

徐刚郑达兴  李述靖 《地质通报》2008,27(11):1837-1845

渭北高原西段新构造活动强烈,崩塌、滑坡地质灾害频繁发生。通过1：5万专题遥感解译和重点地质调查,全区遥感解译崩塌、滑坡地质灾害点共计611处,其中大型滑坡17处、中型滑坡194处、小型滑坡385处,小型崩塌15处。结合区域地理、地质环境特征,将区内大、中型滑坡地质灾害点划分为5个集中分布区、6个集中分布带。区内崩塌、滑坡地质灾害主要受地形地貌、新构造与岩性条件的控制,以地质灾害点集中分布区、带为基础,参考重点地质灾害点的影响范围及人类活动的状况,将千阳县城关镇—崔家头镇、陇县杜阳镇—千阳县草碧镇、陇县峡口河—杨河沟地区列为地质灾害防治监测重点地区。  相似文献