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Geology, geochronology and geochemistry of large Duobaoshan Cu-Mo-Au orefield in NE China: Magma genesis and regional tectonic implications

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Geoscience Frontiers 2021年第1期12卷 265-292页

作者： Wen-yan Cai ke-yong Wang Jian Li Li-juan Fu Chun-kit Lai Han-lun Liu College of Earth Sciences Jilin UniversityChangchun 130061China College of Geology and Mining Engineering Xinjiang UniversityUrumqi 830047China key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and Resources of ChinaChangchun 130061China Technical Information Department Inner Mongolia Shandong Gold Geological Minerals Survey Co.Ltd.Chifeng 024000China Faculty of Science Universiti Brunei DarussalamGadongBrunei Darussalam

Duobaoshan is the largest porphyry-related Cu-Mo-Au orefield in northeastern(NE)Asia,and hosts a number of large-medium porphyry Cu(PCDs),epithermal Au and Fe-Cu skarn *** ages of these deposits,from the oldest(Ordovician)to youngest(Jurassic),have spanned across over 300 *** similar orefields of such size and geological complexity are found in NE Asia,which reflects its metallogenic uniqueness in forming and preserving porphyry-related *** this study,we explore the actual number and timing of magmatic/mineralization phases,their respective magma genesis,fertility,and regional tectonic connection,together with the preservation of *** present new data on the magmatic/mineralization ages(LA-ICP-MS zircon U-Pb,pyrite and molybdenite Re-Os dating),whole-rock geochemistry,and zircon trace element compositions on four representative deposits in the Duobaoshan orefield,i.e.,Duobaoshan PCD,Tongshan PCD,Sankuanggou Fe-Cu skarn,and Zhengguang epithermal Au deposits,and compiled published ones from these and other mineral occurrences in the *** terms of geochronology,we have newly summarized seven magmatic phases in the orefield:(1)Middle-Late Cambrian(506-491 Ma),(2)Early and Middle Ordovician(485-471 Ma and~462 Ma),(3)Late Ordovician(450-447 Ma),(4)Early Carboniferous and Late-Carboniferous to Early Permian(351-345 and 323-291 Ma),(5)Middle-Late Triassic(244-223 Ma),(6)Early-Middle and Late Jurassic(178-168 Ma and~150 Ma),and(7)Early Cretaceous(~112 Ma).Three of these seven major magmatic phases were coeval with ore formation,including(1)Early Ordovician(485-473 Ma)porphyry-type Cu-Mo-(Au),(2)Early-Middle Triassic(246-229 Ma)porphyry-related epithermal Au-(Cu-Mo),and(3)Early Jurassic(177-173 Ma)Fe-Cu skarn *** deposits in the orefield,notably Tongshan and Zhengguang,were likely formed by more than one mineralization *** terms of geochemistry,ore-causative granitoids in the orefield exhibit adakite-like or adakite-nor

关键词： Duobaoshan Cu-Mo-Au orefield(NE China) Porphyry Cu deposit Epithermal Au deposit Paleo-Asian Ocean Central Asian Orogenic Belt(CAOB)

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不同根管动能冲洗方式冲洗效果的研究

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中国实用口腔科杂志 2024年第1期17卷 62-66页

作者：陈燕张彭飞苑克勇黄正蔚国家口腔医学中心国家口腔疾病临床医学研究中心上海市口腔医学重点实验室上海市口腔医学研究所上海交通大学医学院附属第九人民医院护理部上海200011 国家口腔医学中心国家口腔疾病临床医学研究中心上海市口腔医学重点实验室上海市口腔医学研究所上海交通大学医学院附属第九人民医院牙体牙髓科上海200011

目的比较被动超声冲洗技术、EDDY声波冲洗技术和Er∶YAG激光冲击波增强型发射光声流(shock-wave enhanced emission photo acoustic streaming,SWEEPS)模式冲洗技术清除根管内粪肠球菌的效果。方法本研究于2023年2—6月在上海交通大... 详细信息

目的比较被动超声冲洗技术、EDDY声波冲洗技术和Er∶YAG激光冲击波增强型发射光声流(shock-wave enhanced emission photo acoustic streaming,SWEEPS)模式冲洗技术清除根管内粪肠球菌的效果。方法本研究于2023年2—6月在上海交通大学医学院附属第九人民医院牙体牙髓科及口腔微生态与系统性疾病实验室进行。构建3D下颌第一前磨牙粪肠球菌根管感染牙齿模型15颗,将模型分为超声组、EDDY组、SWEEPS-Er∶YAG组,每组5颗。应用上述相应冲洗方式对3组牙齿模型进行根管冲洗,每颗牙齿模型冲洗3次,冲洗前及每次冲洗后用无菌纸尖采集主根管和侧支根管样本,用平板细菌计数法对样本进行检测分析。结果 SWEEPS-Er∶YAG组主根管在冲洗30、60 s后和侧支根管在冲洗60、90 s后菌落数均显著小于超声组和EDDY组,差异均有统计学意义(均P <0.05);SWEEPS-Er∶YAG组主根管在冲洗30、60 s后和侧支根管在冲洗30、60、90 s后细菌载量的减少率均高于超声组和EDDY组,差异均有统计学意义(均P <0.05)。结论 Er∶YAG激光SWEEPS模式冲洗技术较被动超声冲洗技术、EDDY声波冲洗技术可更快更好地清除根管内粪肠球菌。

关键词：粪肠球菌冲击波增强型发射光声流 Er∶YAG激光被动超声冲洗 EDDY声波冲洗

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Microwave-assisted synthesis of high aspect ratio ruthenium nanorods

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Chinese Chemical Letters 2010年第5期21卷 628-631页

作者： Shu Ge Peng Xi Ping Gao yong ke Guo Yu Qing Zhang Han Fan Liu key Laboratory of Polymer and Nanomaterials College of Chemical Engineering and PharmacyHenan University of Science and TechnologyLuoyang 471003China

Poly(N-vinyl-2-pyrrolidone)(PVP)-stabilized ruthenium nanorods with high aspect ratio by refluxing ruthenium(Ⅲ) chloride in n-propanol have been successfully prepared by means of a facile and rapid microwave heating for the first *** structure and morphology of the obtained products were characterized by transmission electron microscopy(TEM),select area electron diffraction(SAED),ultraviolet-visible spectrophotometry(UV-vis),X-ray photoelectron spectroscopy(XPS) and Fourier transform spectroscopy(FT-IR).XPS analysis reveals that the nanorods were in the metallic *** images showed that ruthenium nanorods had an obvious one-dimensional structure with the aspect ratio ranged from 5 to 40 nm and length up to 600 *** patterns indicated that the nanorods were single-crystalline with a hexagonal structure.

关键词： Poly(N-vinyl-2-pyrrolidone) Ruthenium Nanorods Microwave

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橡胶压缩永久变形测定不确定度分析与评定

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合成材料老化与应用 2024年第3期53卷 27-29页

作者：谢可勇安琪孙岩王登霞李晖山东非金属材料研究所山东济南250031􁽈

依据ISO 815-1:2008对三元乙丙橡胶密封材料的压缩永久变形进行了测试,分析了测量重复性、试验设备、测量工具等因素引入的不确定度,量化了各分量的标准不确定度,计算了合成标准不确定度和扩展不确定度。不确定度分析及评定结果显示,压... 详细信息

依据ISO 815-1:2008对三元乙丙橡胶密封材料的压缩永久变形进行了测试,分析了测量重复性、试验设备、测量工具等因素引入的不确定度,量化了各分量的标准不确定度,计算了合成标准不确定度和扩展不确定度。不确定度分析及评定结果显示,压缩永久变形测定结果不确定度的主要分量为测量重复性引入的不确定度;当三元乙丙橡胶压缩永久变形为28%时,扩展不确定度为3.2%(置信水平P=95%,包含因子k=2)。

关键词：压缩永久变形不确定度分析与评定

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Effect of early nutrition on intestine development of intrauterine growth retardation in rats and its correlation to leptin

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World Journal of Gastroenterology 2005年第28期11卷 4419-4422页

作者： Xiao-Shan Qiu Ting-Ting Huang Zhen-Yu Shen Zhi-yong ke Hui-Ying Deng Pediatric Department the First Affiliated Hospital of Sun Yat-Sen UniversityGuangzhou 510080Guangdong ProvinceChina Guangzhou Children’s Hospital Guangzhou 510120Guangdong ProvinceChina

AIM：To investigate the intestine and body development of intrauterine growth retardation（IUGR）rats under early different protein diet and to analyze the correlation between leptin and intestine and body development．METHODS：An IUGR rat model was established by food restriction of pregnant female ***-six neonatal IUGR rats and 24 neonatal normal rats were randomly divided into normal control group（Cgroup），IUGR model group （scgroup），low protein diet IUGR group（SL group），and high protein diet IUGR group（SH group）．Eight rats were killed per group at wk 0，4，and *** leptin，body weight（BW），body length（BL），intestinal weight（IW），intestinal length（IL），andintestinal disaccharidase（including lactase，maltase，and saccharase） were detected．RESULTS：BW（4．50±0．41g），BL（5．96±0．40cm），IW（0．05±0．01g），and IL（15.9±2．8cm）in neonatal IUGR rats were much lower than those in Cgroup（6．01±0．55g，6．26±0．44cm，0．10±0．02g，21.8±2．7cm，P〈0．05），while intestinal lactase and maltase activities were higher than those in *** group showed the fastest catch up growth and their BW，BL，IW，and IL reached the Cgroup level at wk *** group showed relatively slower catch up growth than SH group，and their BW，BL，IW did not reach the Cgroup level at wk *** group did not show intestine and body catch up *** maltase [344±33μmol／（min·q）]and saccharase activities[138±32μmol／（min·g）]in SL group were both markedly lower than nose in C group [751±102，258±271μmol／（min·g），P〈0．05]．There were no significant difierences in lactase activities at wk 4 and disaccharidase activities at wk 12 among all groups（P〈0．05）．The leptin level in SL group（0．58±0．12ng／mL） was the highest in all groups，and much lower in SH group（0．21±0．03ng／mL） than that in any other IUGR groups at wk 4（P〈0．05）．Leptin was negatively related to BW （r=-0．556，P=0．001），IW（r=-0．692，P=0．001） and IL（r=-0．738，P=0．000）at wk 4，while no correlation was found at wk 12．CONCLUSION：High protein diet is a reasonable early nutritional mode to IU

关键词： Intrauterine growth retardation Rat Intestine development Disaccharidase Leptin Nutritional intervention

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Strategies for improving the storage performance of silicon-based anodes in lithium-ion batteries

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Nano Research 2019年第8期12卷 1739-1749页

作者： Wei Tao Ping Wang Ya You Kyusung Park Cao-Yu Wang yong-ke Li Fei-Fei Cao Sen Xin College of Science Huazhong Agricultural UniversityWuhan 430070China Department of Mechanical Engineering The University of Texas at Austin AustinTX 78712USA

Silicon has attracted much attention as a promising anode material for lithium-ion batteries (LIBs) due to its high theoretical capacity and rich resource abundance. However, the practical battery use of Si is challenged by its low conductivity and drastic volume variation during the Li uptake/release process. Tremendous efforts have been made on shrinking the particle size of Si into nanoscale so that the volume variation could be accommodated. However, the bare nano-Si material would still pulverize upon (de)lithiation. Moreover, it shows an excessive surface area to invite unlimited growth of solid electrolyte interface that hinders the transportation of charge carriers, and an increased interparticle resistance. As a result, the Si nanoparticles gradually lose their electrical contact during the cycling process, which accounts for poor thermodynamic stability and sluggish kinetics of the anode reaction versus Li. To address these problems and improve the Li storage performance of nano-Si anode, proper structural design should be applied on the Si anode. In this perspective, we will briefly review some strategies for improving the electrochemistry versus Li of nano-Si materials and their derivatives, and show opinions on the optimal design of nanostructured Si anode for advanced LIBs.

关键词： silicon anode lithium-ion battery silicon/carbon composites silicon/non-carbon composites silicon oxide

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基于时空深度学习模型的PM_(2.5)预测

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计算机仿真 2024年第5期41卷 487-494页

作者：胡克勇公雪瑶刘国晓王续澎青岛理工大学信息与控制工程学院山东青岛266520

伴随着快速城市化进程,空气污染尤其是PM_(2.5)严重影响着人们的身体健康,精准的空气质量预测能够为空气污染防治以及政府决策提供有力支撑。针对当前空气质量预测研究中存在的问题,包括缺失数据填充,时空特征信息提取等,提出一种基于... 详细信息

伴随着快速城市化进程,空气污染尤其是PM_(2.5)严重影响着人们的身体健康,精准的空气质量预测能够为空气污染防治以及政府决策提供有力支撑。针对当前空气质量预测研究中存在的问题,包括缺失数据填充,时空特征信息提取等,提出一种基于三维卷积神经网络和长短时记忆神经网络构建的时空混合深度学习模型C3D-LSTM。模型通过三维卷积模块对时空维度上的特征信息进行联合提取,并利用长短时记忆网络学习长时间序列数据的能力,预测目标站点的PM_(2.5)的浓度。基于北京市22个站点的真实数据集进行实验,结果表明,所提模型在平均绝对误差、均方误差和拟合系数三种指标方面均优于其它基准空气质量预测模型。

关键词：空气质量预测卷积神经网络循环神经网络深度学习

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Differential sensitivity of GABAergic and glycinergic inputs to orexin-A in preganglionic cardiac vagal neurons of newborn rats

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Acta Pharmacologica Sinica 2005年第12期26卷 1442-1447页

作者： Ji-jiang WANG~2 yong-hua CHEN ke-yong LI Feng-yan SUN National key Laboratory of Medical Neurobiology,Fudan University Shanghai Medical College,Shanghai 200032,China National key Laboratory of Medical Neurobiology Fudan University Shanghai Medical College Shanghai China

Aim:To test the effect of orexin-A(hypocretin-1),a neuropeptide synthesized inthe lateral hypothalamus and the perifornical area,on the glycinergic inputs andthe GABAergic inputs of cardiac vagal neurons(CVN).Methods:The effects oforexin-A at three concentrations(20 nmol/L,100 nmol/L,500 nmol/L)on theglycinergic inputs and the GABAergic inputs were investigated by using retro-grade fluorescent labeling of cardiac neurons(CVN)in the nucleus ambiguus(NA)and the voltage patch-clamp ***:Orexin-A dose-depen-dently increased the frequency of both the glycinergic and the GABAergic spon-taneous inhibitory postsynaptic currents(sIPSC).However,at a lower concentra-tion(20 nmol/L)of orexin-A,although the frequency of the glycinergic sIPSC wassignificantly increased,the frequency of the GABAergic sIPSC was not signifi-cantly ***:The glycinergic inputs and the GABAergic inputshave different sensitivities to orexin-A,which suggests that the two kinds ofinhibitory inputs might play different roles in the synaptic control of cardiac vagalfunctions.

关键词： patch-clamp techniques nervous system synaptic transmission vagus nerve

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Low Frequency Dispersion Law for Two-Dimensional Metallic Photonic Crystals

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Wuhan University Journal of Natural Sciences 2008年第1期13卷 50-54页

作者： WANG Yun JIA Han TIAN Zhidong WANG yong ke Manzhu School of Physics and Technology Wuhan University Wuhan 430072 Hubei China

Using the rigorous multiple-scattering theory, we study the dispersion relation of electromagnetic （EM） waves in two dimensional dielectric photonic crystals （PCs） and metallic photonic crystals （MPCs） in the low-frequency limit. Analytic formula for the effective velocity of EM waves in PCs and MPCs is obtained. Accuracy of our formula is checked by comparing the results with rigorous calculations. For PCs, our result is exactly the same as the coherent potential approximation （CPA）, which is accurate even when the filling fraction is high. But for MPCs, our approach demonstrates special advantages, while the CPA theory fails, in predicting the effective velocity of EM waves in MPCs at low frequency.

关键词： photonic crystal metal low frequency coherent potential approximation (CPA)

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高中学校教学质量管理体系的重构——基于“新课程、新教材、新高考”要求

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当代教研论丛 2024年第2期10卷 11-15页

作者：宫东亮刘振成高嵩博吴克勇哈尔滨师范大学附属中学黑龙江哈尔滨150080

学校教学质量必须藉由科学的质量管理体系支撑,通过相关部门的科学分工和配合来完成,这是教学质量管理的顶层设计。当前,新课程、新教材、新高考的实施,给学校的质量管理提出了新的挑战。为了应对这一挑战,文章探讨了学校组织结构的重... 详细信息

学校教学质量必须藉由科学的质量管理体系支撑,通过相关部门的科学分工和配合来完成,这是教学质量管理的顶层设计。当前,新课程、新教材、新高考的实施,给学校的质量管理提出了新的挑战。为了应对这一挑战,文章探讨了学校组织结构的重新设计和调整,提出了建设性的建议。

关键词：新课程新教材新高考教学质量管理体系

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