Recent advancements have led to the synthesis of various new metal-containing explosives,particularly energetic metal-organic frameworks(EMOFs),which feature high-energy ligands within well-ordered crystalline structu...Recent advancements have led to the synthesis of various new metal-containing explosives,particularly energetic metal-organic frameworks(EMOFs),which feature high-energy ligands within well-ordered crystalline structures.These explosives exhibit significant advantages over traditional compounds,including higher density,greater heats of detonation,improved mechanical hardness,and excellent thermal stability.To effectively evaluate their detonation performance,it is crucial to have a reliable method for predicting detonation heat,velocity,and pressure.This study leverages experimental data and outputs from the leading commercial computer code to identify suitable decomposition pathways for different metal oxides,facilitating straightforward calculations for the detonation performance of alkali metal salts,and metal coordination compounds,along with EMOFs.The new model enhances predictive reliability for detonation velocities,aligning more closely with experimental results,as evi-denced by a root mean square error(RMSE)of 0.68 km/s compared to 1.12 km/s for existing methods.Furthermore,it accommodates a broader range of compounds,including those containing Sr,Cd,and Ag,and provides predictions for EMOFs that are more consistent with computer code outputs than previous predictive models.展开更多
在巴西,与碱性岩-碳酸岩杂岩体相关成矿作用复杂,产出了世界上唯一的霞石正长岩型斜锆石矿床、全球最大的铌矿床以及巴西最大的铀矿和镍矿集区,资源储量丰富,具有重要的经济价值和战略意义,同时也是关键矿产成矿作用研究的殿堂。本文在...在巴西,与碱性岩-碳酸岩杂岩体相关成矿作用复杂,产出了世界上唯一的霞石正长岩型斜锆石矿床、全球最大的铌矿床以及巴西最大的铀矿和镍矿集区,资源储量丰富,具有重要的经济价值和战略意义,同时也是关键矿产成矿作用研究的殿堂。本文在前人研究基础之上,整理分析了35处与碱性岩-碳酸岩相关的关键矿产地质特征。根据成矿作用特征,划分了4个成矿系列:①霞石正长岩碱性杂岩相关的U-Zr-Mo-REE和萤石成矿系列;②碱性岩-碳酸岩杂岩(正长岩+辉石岩+霓霞岩+碳酸岩等)相关的Nb-P-Ti-REE和蛭石成矿系列;③阿拉斯加型超基性岩-碱性杂岩体相关的Ni成矿系列;④交代正长岩相关的U-P成矿系列。根据关键矿产资源时空分布规律,划分了5个成矿带:(Ⅰ)Lancinha-Cubatao碱性岩-碳酸岩相关REE-P-U-Zr-Ni-Mo-蛭石成矿带;(Ⅱ)Rio de Janeiro-Rondonia碱性岩-碳酸岩-金伯利岩相关的Nb-REE-Ti-Zr-P-金刚石成矿带;(Ⅲ)Ceara-Mato Grossodo Sul超基性岩-碱性岩-碳酸岩相关的Ni-U-P-蛭石成矿带;(Ⅳ)亚马逊地区碳酸岩相关Nb-REE-Th-Ti-P成矿带;(Ⅴ)巴伊亚地区与变正长岩相关的U成矿带。本文还详细介绍了典型矿床成矿地质特征和成矿条件,为走出去寻找关键矿产资源基地提供了理论支撑。展开更多
基金the research committee at Malek Ashtar University of Technology (MUT) for their invaluable support of this project
文摘Recent advancements have led to the synthesis of various new metal-containing explosives,particularly energetic metal-organic frameworks(EMOFs),which feature high-energy ligands within well-ordered crystalline structures.These explosives exhibit significant advantages over traditional compounds,including higher density,greater heats of detonation,improved mechanical hardness,and excellent thermal stability.To effectively evaluate their detonation performance,it is crucial to have a reliable method for predicting detonation heat,velocity,and pressure.This study leverages experimental data and outputs from the leading commercial computer code to identify suitable decomposition pathways for different metal oxides,facilitating straightforward calculations for the detonation performance of alkali metal salts,and metal coordination compounds,along with EMOFs.The new model enhances predictive reliability for detonation velocities,aligning more closely with experimental results,as evi-denced by a root mean square error(RMSE)of 0.68 km/s compared to 1.12 km/s for existing methods.Furthermore,it accommodates a broader range of compounds,including those containing Sr,Cd,and Ag,and provides predictions for EMOFs that are more consistent with computer code outputs than previous predictive models.
文摘在巴西,与碱性岩-碳酸岩杂岩体相关成矿作用复杂,产出了世界上唯一的霞石正长岩型斜锆石矿床、全球最大的铌矿床以及巴西最大的铀矿和镍矿集区,资源储量丰富,具有重要的经济价值和战略意义,同时也是关键矿产成矿作用研究的殿堂。本文在前人研究基础之上,整理分析了35处与碱性岩-碳酸岩相关的关键矿产地质特征。根据成矿作用特征,划分了4个成矿系列:①霞石正长岩碱性杂岩相关的U-Zr-Mo-REE和萤石成矿系列;②碱性岩-碳酸岩杂岩(正长岩+辉石岩+霓霞岩+碳酸岩等)相关的Nb-P-Ti-REE和蛭石成矿系列;③阿拉斯加型超基性岩-碱性杂岩体相关的Ni成矿系列;④交代正长岩相关的U-P成矿系列。根据关键矿产资源时空分布规律,划分了5个成矿带:(Ⅰ)Lancinha-Cubatao碱性岩-碳酸岩相关REE-P-U-Zr-Ni-Mo-蛭石成矿带;(Ⅱ)Rio de Janeiro-Rondonia碱性岩-碳酸岩-金伯利岩相关的Nb-REE-Ti-Zr-P-金刚石成矿带;(Ⅲ)Ceara-Mato Grossodo Sul超基性岩-碱性岩-碳酸岩相关的Ni-U-P-蛭石成矿带;(Ⅳ)亚马逊地区碳酸岩相关Nb-REE-Th-Ti-P成矿带;(Ⅴ)巴伊亚地区与变正长岩相关的U成矿带。本文还详细介绍了典型矿床成矿地质特征和成矿条件,为走出去寻找关键矿产资源基地提供了理论支撑。
