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What drove late Mesozoic extension of the northern China-Mongolia tract?

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What drove late Mesozoic extension of the northern China-Mon...

基于模糊综合评价的深部巷道破坏定量风险评估

中国科学院地质与地球物理研究所2003学术年会

作者： Qing-ren Meng~* Institute of Geology and Geophysics,Chinese Academy of Sciences,po Box 9825,Beijing 100029,China

The northern China-Mongolia tract exhibited a tectonic transition from contractional to extensional deformation in late Mesozoic *** Middle to early Late Jurassic crustal shortening is widely thought to have resulted from collision of an amalgamated North China-Mongolia block and the Siberian plate,but widespread late Late Jurassic-Early Cretaceous extension has not been satisfactorily explained by existing *** prominent features of the extensional tectonics of the northern China-Mongolia tract are:(1) Late Jurassic voluminous volcanism prior to Early Cretaceous large-magnitude rapid extension;(2) overlapping in time of contractional deformation in the Yinshan-Yanshan belt with development of extension-related basins in the interior of the northern China-Mongolia tract;and(3) widespread occurrence of alkali granitic plutonism. extensional basins and metamorphic core complexes in the Early Cretaceous.A new explanation is advanced in this study for this sequence of *** collision of amalgamated North China-Mongolia with Siberia led to crustal overthickening of the northern China-Mongolia tract and formation of a high-standing *** breakoff at depth of the north-dipping Mongol-Okhotsk oceanic slab is suggested as the main trigger for late Mesozoic lithospheric extension of that *** breakoff resulted in mantle lithospheric stretching of the adjacent northern China-Mongolia tract with subsequent ascent of hot asthenosphere and magmatic underplating at the base of the ***,these phenomena triggered gravitational collapse of the previously thickened crust,leading to late Late Jurassic-Early Cretaceous crustal extension,and importantly, coeval contraction along the southern margin of the plateau in the Yinshan-Yanshan *** proposed model provides a framework for interpreting the spatial and temporal relationships of distinct processes and reconciling some seemingly contradictory phenomena,such as the synchronous ext

关键词： Crustal extension Gravitational collapse Yinshan Daqing Shan Northern China and Mongolia

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东北大学学报（自然科学版） 2022年第5期43卷 733-739页

作者：刘建坡武峰王人张俊杰东北大学深部金属矿山安全开采教育部重点实验室辽宁沈阳110819

深部金属矿地质条件和开采过程的复杂性导致巷道破坏时空分布复杂.以阿舍勒铜矿深部采区为研究对象,综合考虑地质赋存条件、开采影响和微震监测数据三方面的评价指标开展巷道围岩破坏风险定量评估研究.采用熵权法确定了不同评价指标的... 详细信息

深部金属矿地质条件和开采过程的复杂性导致巷道破坏时空分布复杂.以阿舍勒铜矿深部采区为研究对象,综合考虑地质赋存条件、开采影响和微震监测数据三方面的评价指标开展巷道围岩破坏风险定量评估研究.采用熵权法确定了不同评价指标的权重分配,权重占比前五的评价指标均为微震参数,其权重占比和超过80%,表明微震参数在巷道破坏风险评估中占主导作用.基于模糊综合评价方法的巷道破坏样本数据的评估准确率接近90%,能够实现大范围区域性巷道破坏风险定量评估,满足深部金属矿山区域性地压灾害防控与系统性开采过程优化调控的需要.

关键词：深部金属矿巷道破坏模糊综合评价风险评估微震

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Metallogeny of Shoshonite-Hosted Copper-Gold Deposits in Middle-South Parts of Tancheng-Lujiang Deep Fault Zone and Its Vicinity, Eastern China

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Journal of Earth Science 1999年第1期18卷 51-54页

作者： Qiu Jiansheng Wang Dezi ren Qijiang Department of Earth Sciences, Nanjing University, Nanjing 210093 Brent I. A. McInnes CSIRO Division of Exploration and Mining, po Box 136, North Ryde, NSW 2113, Australia

The middle south parts of Tancheng Lujiang deep fault zone and its vicinity are an important locality of Cu Au deposits related to Mesozoic volcanic subvolcanic magmatism in eastern China. According to their metallogenic features and ore forming conditions, copper gold deposits in this district are ascribed to two groups: the epithermal group which can be further divided into tellurium gold type, quartz adularia type and quartz manganoansiderite type; the magmatic hydrothermal group which includes porphyry Cu Au deposit, breccia pipe porphyry type Au Cu deposit and skarn type Au Cu deposit. In this paper, characteristics of six typical shoshonite hosted Cu Au deposits are outlined. Additionally, the factors that control the metallogenesis and distribution of these Cu Au deposits are discussed preliminarily.

关键词： shoshonitic volcanic rocks copper gold deposits metallogenic features eastern China.

抗骨增生胶囊联合洛索洛芬钠治疗早期膝骨关节炎的临床研究

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现代药物与临床 2024年第10期39卷 2651-2655页

作者：任国飞李同林卞恒杰南京市中西医结合医院骨科

目的探讨抗骨增生胶囊联合洛索洛芬钠治疗早期膝骨关节炎的临床疗效。方法选取2021年3月—2023年12月南京市中西医结合医院收治的106例早期膝骨关节炎患者，随机分为对照组（53例）和治疗组（53例）。对照组口服洛索洛芬钠片，60 mg/... 详细信息

目的探讨抗骨增生胶囊联合洛索洛芬钠治疗早期膝骨关节炎的临床疗效。方法选取2021年3月—2023年12月南京市中西医结合医院收治的106例早期膝骨关节炎患者，随机分为对照组（53例）和治疗组（53例）。对照组口服洛索洛芬钠片，60 mg/次，3次/d。治疗组在对照组基础上口服抗骨增生胶囊，5粒/次，3次/d。两组患者均连续治疗4周。观察两组患者临床疗效，比较治疗前后两组牛津膝关节功能评估量表（OKS）评分、视觉模拟评分（VAS）、步态情况、血清炎症指标白细胞介素-6(IL-6)、超敏C反应蛋白（hs-CRP）及不良反应情况。结果治疗后，与对照组总有效率84.91%比较，治疗组的总有效率（96.23%）明显升高（P<0.05）。与治疗前比较，治疗后两组OKS评分和VAS评分均明显降低（P<0.05）；且与对照组比较，治疗后治疗组的OKS评分和VAS评分更低（P<0.05）。与治疗前比较，治疗后两组的步速、步长均增加（P<0.05）；与对照组比较，治疗后治疗组的步速、步长增加更明显（P<0.05）。与治疗前比较，治疗后两组的IL-6、hsCRP水平均明显降低（P<0.05）；与对照组比较，治疗后治疗组的IL-6、hs-CRP水平明显更低（P<0.05）。结论抗骨增生胶囊联合洛索洛芬钠治疗早期膝骨关节炎疗效较好，能明显减轻疼痛、改善膝关节功能和步态情况，降低炎症反应，不良反应少而轻微。

关键词：抗骨增生胶囊洛索洛芬钠膝骨关节炎白细胞介素-6 超敏C反应蛋白

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用于MS胶的超高分子量聚醚多元醇合成研究

塑料科技 2024年第6期52卷 89-93页

作者：孙兆任戈欢陈庆柏李剑锋公维英山东一诺威新材料有限公司山东淄博255075

以丙二醇为起始剂,双金属氰化物络合物(DMC)为催化剂,合成分子量12 000 g/mol和18 000 g/mol的聚醚多元醇。采用傅里叶变换红外光谱(FTIR)、核磁共振氢谱(1H-NMR)及凝胶渗透色谱(GPC)等方法对产物结构进行表征。超高分子量聚醚多元醇具... 详细信息

以丙二醇为起始剂,双金属氰化物络合物(DMC)为催化剂,合成分子量12 000 g/mol和18 000 g/mol的聚醚多元醇。采用傅里叶变换红外光谱(FTIR)、核磁共振氢谱(1H-NMR)及凝胶渗透色谱(GPC)等方法对产物结构进行表征。超高分子量聚醚多元醇具有分子量分布窄、不饱和度低等特点。探讨了起始剂的含水率、进料速度、聚合反应温度、搅拌转速等因素对聚合反应活性和产品指标的影响。当丙二醇起始剂水分含量≤0.06%、po进料速度220~250 g/h、聚合反应温度控制在130~135℃之间、催化剂浓度30 mg/kg,能保证产品质量持续稳定。以制备的超高分子量聚醚多元醇为原料合成硅烷改性聚醚树脂(MS树脂)并配制MS胶。结果表明:MS树脂黏度适中,性能优异。

关键词：聚醚多元醇超高分子量硅烷改性聚醚 MS胶

乙二酸四乙酸二钠盐改性枸杞杆生物炭对亚甲基蓝吸附性能

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应用化学 2024年第7期41卷 1035-1046页

作者：任艳娇徐荣声王萍孙冬耿万东张海永宁夏大学新华学院银川750021 北方民族大学化学与化工学院银川750411 中国矿业大学(北京)化学与环境工程学院北京100083

以H_(3)po_(4)为活化剂,通过高温炭化法将宁夏枸杞杆制备成生物质活性炭(CP),并利用乙二酸四乙酸二钠盐(EDTA-2Na)对其进行表面改性,得到氮掺杂活性炭(CPE)。利用比表面积分析(BET)、X射线衍射仪(XRD)、X射线光电子能谱分析仪(XPS)、傅... 详细信息

以H_(3)po_(4)为活化剂,通过高温炭化法将宁夏枸杞杆制备成生物质活性炭(CP),并利用乙二酸四乙酸二钠盐(EDTA-2Na)对其进行表面改性,得到氮掺杂活性炭(CPE)。利用比表面积分析(BET)、X射线衍射仪(XRD)、X射线光电子能谱分析仪(XPS)、傅里叶变换红外光谱仪(FT-IR)和扫描电子显微镜(SEM)技术手段研究其表面微观形貌和化学结构特性,阐明了EDTA-2Na的改性机理和CPE对亚甲基蓝的吸附机制。结果表明:EDTA-2Na的掺杂可以有效调控生物炭的孔结构和官能团,显著提升了生物炭的比表面积、孔结构和活性吸附位点。EDTA-2Na改性后的生物炭CPE(比表面积(816.47 m^(2)/g)、总孔体积(0.4925 cm^(3)/g)和平均孔径(2.41 nm))参数明显优于CP(比表面积(241.45 m^(2)/g)、总孔体积(0.1280 cm^(3)/g)和平均孔径(2.12 nm))的微观结构,表面形成较稳定的氨基(—NH—、—NH_(2)—)和吡咯结构氮,构成了对亚甲基蓝有较好吸附效果的活性表面生物质碳材料CPE。常温中性条件下,CPE对MB的最大吸附量为658.8 mg/g,较未进行N掺杂的生物碳CP(吸附量为358.2 mg/g)吸附率提升了83.92%。CPE对MB的等温吸附过程符合Langmuir模型(R^(2)=0.9896),吸附动力学符合准二级动力学模型(R2=0.99997),吸附过程主要以单分子层化学吸附为主,循环使用性能较好。

关键词：枸杞杆 H_(3)po_(4)活化乙二酸四乙酸二钠盐亚甲基蓝吸附

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In situ fabrication of Na3V2（po4）3 quantum dots in hard carbon nanosheets by using lignocelluloses for sodium ion batteries

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Journal of Materials Science & Technology 2019年第10期35卷 2396-2403页

作者： Qihao Zhang Xudong Zhang Wen He Guogang Xu Manman ren Jinhua Liu Xuena Yang Feng Wang Institute of Materials Science and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China College of Material Science and Engineering Shandong University of Science and TechnologyQingdao 266590China

The rational assembly of quantum dots on two-dimensional(2 D) carbonaceous materials is very promising to produce materials, but remains a challenge. Here, we develop an assembly strategy of growing Na3 V2(po4)3 quantum dots with superlattice structure(NVP-QDs-SL) for obtaining precise control of the size, distribution and crystallinity. The multifunctional lignocelluloses(LCs) used as a hard carbon source induce heterogeneous nucleation and confined growth of NVP-QDs-SL, leading to the uniform distribution of NVP-QDs-SL in H/S-doped hard carbon ultra-thin nanosheets(HCS). Detailed electrochemical analysis results from sodium-ion batteries of NVP-QDs-SL show that NVP-QDs-SL could trap the electrons inside HCS, significantly enhancing Na ion storage and transfer kinetics. Compared to the common Na3 V2(po4)3 nanoparticle cathode, the NVP-QDs-SL/HCS cathode exhibits a high reversible capacity of 149.2 m A h g^-1 at a 0.1 C rate, which is far beyond the theoretical capacity of Na3 V2(po4)3(117.6 m A h g^-1).At the ultrahigh current rate of 100 C, this cathode still remains a high discharge capacity of 40 m A h *** after cycling at 20 C over 3000 cycles, an ultrahigh coulombic efficiency close to 100% is still obtained,highlighting its excellent long cycling life, remarkable rate performance and energy density.

关键词： Lignocellulose Hard carbon nanosheet Na3V2(po4)3 quantum dot Superlattice structure

A Novel Electrochemical Reactor for Nitrogen and Phosphorus Recovery from Domestic Wastewater

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Frontiers of Environmental Science & Engineering 2017年第4期11卷 139-144页

作者： Shiting ren Mengchen Li Jianyu Sun Yanhong Bian Kuichang Zuo Xiaoyuan Zhang Peng Liang Xia Huang State Key Joint Laboratory of Environment Simulation and pollution Control School of Environment Tsinghua University Beijing 100084 China

To separate and concentrate NH4＋ and po43 from the synthetic wastewater to the concentrated solution through a novel electrochemical reactor with circulated anode and cathode using the difference of the concentration between electrode chamber and middle *** recent years, the research on electrochemical processes have been focused on phosphate and ammonium removal and recovery. Among the wide range of possibilities with regards to electrochemical processes, capacitive deionization （CDI） saves the most energy while at the same time does not have continuity and selectivity. In this study, a new electrochemical reactor with electrolyte cyclic flowing in the electrode chambers was constructed to separate and concentrate phosphate and ammonium continuously and selectively from wastewater, based on the principle of CDI. At the concentration ratio of NaCI solution between the electrode chambers and the middle chamber （r） of 25 to 1, phosphate and ammonium in concentration level of domestic wastewater can be removed and recovered continuously and selectively as struvite. Long-term operation also indicated the ability to continuously repeat the reaction and verified sustained stability. Further, the selective recovery at the certain r could also be available to similar technologies for recovering other kinds of substances.

关键词： Nutrients recovery Electrochemical reactor Electrolyte cyclic flowing Concentration ratio Struvite

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猪肉中风味物的研究进展

食品工业科技 2009年第8期30卷 352-355页

作者：吕东坡朱仁俊云南农业大学食品科学技术学院云南昆明650201

风味是影响猪肉品质的重要指标之一,本文综合叙述了猪肉中风味物的前体物质以及呈味成分,呈味成分的形成途径和影响其形成的因素(脂质氧化、美拉德反应和斯特勒克降解反应、硫胺素降解是肉的风味形成的主要三条途径),并进一步提出了风... 详细信息

风味是影响猪肉品质的重要指标之一,本文综合叙述了猪肉中风味物的前体物质以及呈味成分,呈味成分的形成途径和影响其形成的因素(脂质氧化、美拉德反应和斯特勒克降解反应、硫胺素降解是肉的风味形成的主要三条途径),并进一步提出了风味的调控,这些对于猪肉的保鲜和加工具有重要的指导意义。

关键词：猪肉风味形成途径调控