This study uses apatite fission track (AFT) and zircon U-Pb data to reveal the cooling history of bedrocks from the Dong'an, Cuihongshan and Pingdingshan deposits in the Lesser Hinggan Range, which is one of the most important metallogenic districts in NE China. AFT results and modeling of samples identified three cooling phases since late Mesozoic times. Stage one recorded rapid cooling to the low temperature part of the fission track partial annealing zone at circa 100 +/- 10 degrees C during ca. 90-70 Ma with an average exhumation rate of similar to 29-58 m/Ma. Stage two was a relatively slow cooling period occurring between similar to 70 and 25 Ma with an average exhumation rate of similar to 12 m/Ma, suggesting that the Lesser Hinggan Range had been denuded to an area of low relief. Stage three was an increased cooling period took place from the Miocene to Quaternary (< 25 Ma) with an average exhumation rate of similar to 47 m/Ma, which transported the sampled rocks to the present surface at an increased exhumation rate. Zircon U-Pb dating of magmatic rocks from the three deposits yielded Concordia ages of 188.8 +/- 0.5 Ma (alkali-feldspar granite) and 115.6 +/- 0.4 Ma (rhyolitic porphyry) at the Dong'an deposit, yielded Concordia ages of 195 +/- 1 Ma (alkali-feldspar granite) and 200.3 +/- 0.5 Ma (monzonitic granite) at the Cuihongshan deposit, and yielded Concordia ages of 259.4 +/- 0.82 Ma (Biotite granit) and 225.9 +/- 1.1 Ma (dioritic dyke) at the Pingdingshan deposit, which are notably older than their corresponding AFT ages. Our results, combined with other data in and/or around NE Asia (Great Hinggan, Changbai Mts, Yanji, Sikhote Alin Mts, South Korea and SW Japan), suggest micro-continental blocks in NE Asia underwent different uplifting/denudation rates since the Late Cretaceous, which indicates that the Xing'an, Songliao and Nadanhada-SikhoteAlin accretionary complex blocks may have good potential for mineral exploration to great depths.

文章通过风电设备远程监测与故障诊断平台建设实践,从系统功能、平台建设、故障分析等层面,论述了如何基于大数据实现对风机故障预诊断,提升风力发电机组监控与管理水平.通过对机组运行状态的实时在线监测,利用系统内智能数据报警策略准确筛选机组异常,借助于人工智能分析诊断系统和远程专家的综合分析评价,滚动预测故障未来的发展趋势,帮助用户优化风机维护检修工作,减少停机损失,降低维护成本,提高风机利用率.在集控中心预检测平台建立大数据存储、处理、分析、诊断服务器,收集风场各项数据后与专业厂家存储的数据资源整合,建立各种类型风机故障模型,集控中心培训诊断分析师可通过对比找出故障曲线特点和规律,对实时数据经诊断分析后提出整改措施,提前预防风机故障的扩大,开发相关监视及报警系统,联合风机传统监控系统提高监控中心的设备管理能力.

Traditional models based on temperature trend can not comprehensively monitor the condition of wind turbine, besides, the threshold obtained from model can cause fluctuation when wind turbine operates under different conditions. In view of this, this paper presents a novel methodology based on cointegration analysis for continuously monitoring the operating conditions of wind turbine. The first step is to determine the optimal combination of parameters from normal SCADA sample data, by using the cointegration test. Then, perform the method of cointegration analysis to calculate the cointegration residuals and stationary threshold line under normal working space. When wind turbine component is operating out of the normal track, the data sample in cointegration residuals will exceed the stationary threshold line, and send the alert signals. The method is tested using SCADA data of wind turbine with known faults, the results demonstrate the proposed method can effectively monitor the abnormal state of generator and gear box, and provide the function of early warning.

Arsenic poisoning is an important reason for deactivation of selective catalytic reduction (SCR) catalysts during SCR denitration process. Once the catalyst is poisoned by arsenic, it is difficult to regenerate by common washing methods. To solve this problem, this article investigates the influence of valence state and content of arsenic on activity of the SCR catalysts, by taking the arsenic poisoned catalysts as the research object. Moreover, the deactivated catalysts were washed and regenerated by ammonium peroxydisulfate with concentration of 1.0 mol/L and sodium carbonate with concentration of 1.0 mol/L. The results show that, the arsenic species mainly exist in valence state of pentavalent (As5+) on the arsenic poisoned catalysts' surface, and the content of As has a significant effect on the catalytic denitrification activity. Importantly, as the mass ratio of As to V was increased from 2.04 to 3.52, the denitrification efficiency decreased by 15.71%. Besides, the removal rate of As was 66.0% when washed by Na2CO3 aqueous, while that of the ammonium peroxydisulfate was merely 25.3%. The reason was probably that arsenic on the catalyst surface could convert into Na3AsO4, which was removed easily due to its well solubility in H2O. Consequently, the catalytic denitrification efficiency recovered.

为探讨石窑沟钼矿床的矿床成因,本文开展了系统的地质及成矿流体特征研究.根据矿脉穿切关系,将热液成矿过程分为早、中、晚3个阶段,其矿物组合分别为石英-钾长石-黄铁矿-辉钼矿、石英-多金属硫化物和石英-方解石±黄铁矿.研究发现,成矿早、中阶段产出的石英中有水溶液包裹体、纯CO2包裹体、H2O-CO2类包裹体和含子晶多相包裹体,而成矿晚阶段产出的石英中仅有水溶液包裹体;对不同阶段包裹体的显微测温和激光拉曼测试结果显示,成矿早阶段成矿流体以高温、高盐度、高氧化性、富CO2为特征;中阶段流体发生沸腾,导致CO2逃逸,还原性增强,成矿物质沉淀;晚阶段流体以低温、低盐度、贫CO2为特征.流体沸腾可能是引起辉钼矿沉淀的重要原因.

<正>起因这是一座在道路施工建设工地里使用的建筑。最初接触到这个项目的时候,我们感到颇为诧异:通常在工地里采用施工板房即可,简单易行,何须单独设计?在和建设单位的领导针对该项目作初次的交流之后,才明其意。该领导思想非常丰富且活跃,见解独到。因为他同时也是一位优秀的作家

嘉峪关市人大常委会代表人事工委主任孙喜德撰文说,<代表法>明确规定各级人大代表都可依法组成代表小组,开展闭会期间的活动.这就使代表小组在地位上有法可依,在组织上名正言顺,在活动上顺理成章.实践证明,代表小组在坚持和完善人民代表大会制度,进一步发挥国家权力机关的作用方面,具有重要的地位和作用.

党的作风建设关键在制度，选贤任能是党风建设的组织保证，《党政领导干部选拔任用条例》是干部选拔任用制度的重大创新，抓好《条例》贯彻实施，将开创干部人事工作的新局面，并将有力推动党的作风建设。