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Age and petrogenesis of late Mesozoic intrusions in the Huoluotai porphyry Cu-(Mo)deposit,northeast China:Implications for regional tectonic evolution

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Geoscience Frontiers 2022年第2期13卷 311-332页

作者： Yong-gang Sun Bi-le Li Zhong-hai zhao Feng-yue Sun Qing-feng ding Xu-sheng Chen Jie-biao Li Ye Qian Yu-jin Li College of Earth Sciences Jilin UniversityChangchun 130061China College of Mining Liaoning Technical UniversityFuxin 123000China Qiqihaer Institute of Geological Exploration Heilongjiang 161006China School of Environment Harbin Institute of TechnologyHarbin 150090China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and ResourcesChangchun 130061China

Multi-stage igneous rocks developed in the recently discovered Huoluotai Cu-(Mo)deposit provide new insights into the controversial late Mesozoic geodynamic evolution of the northern segment of the Great xing’an Range(NSGXR).Zircon U-Pb dating suggests that the monzogranite,ore-bearing granodiorite porphyry,diorite porphyry,and granite porphyry in the deposit were emplaced at 179.5±1.6,148.9±0.9,146.1±1.3,and 142.2±1.5 Ma,*** Re-Os dating of molybdenite yielded an isochron age of 146.9±2.3 Ma(MSWD=0.27).The Jurassic adakitic monzogranite and granodiorite porphyry are characterized by high SiO_(2)and Na_(2)O contents,low K_(2)O/Na_(2)O ratios,low Mg O,Cr,and Ni contents,low zirconεHf(t)values relative to depleted mantle,and relatively high Th *** were produced by partial melting of a subducted oceanic slab,with involvement of marine sediments in the magma source and limited interaction with mantle peridotites during magma *** Late Jurassic diorite porphyry is characterized by moderate SiO_(2) contents,high Mg O,Cr,and Ni contents,and positive dominatedεHf(t)values,indicating it was produced by partial melting of a subduction-modified lithospheric mantle wedge and underwent limited crustal contamination during magma *** early Early Cretaceous adakitic granite porphyry shows high SiO_(2) and K_(2)O contents and K_(2)O/Na_(2)O ratios,low Mg O,Cr,and Ni contents,enriched Sr-Nd isotopic compositions,and slightly positive zirconεHf(t)values,suggesting it was produced by partial melting of thickened mafic lower *** NSGXR experienced a tectonic history that involved flat-slab subduction(200-160 Ma),and tearing and collapse(150-145 Ma)of the Mongol-Okhotsk oceanic *** period of magmatic quiescence from ca.160 to 150 Ma was a response to flat-slab subduction of the Mongol-Okhotsk oceanic *** thickening in the NSGXR(145-133 Ma)was due to the collision between the Amuria Block and the Siberian Craton.

关键词： Geochemistry Zircon U-Pb dating Huoluotai Cu-(Mo)deposit Flat-slab subduction Mongol-Okhotsk Ocean

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碳膜原子氧传感器研制及地面性能测试

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航天器环境工程 2024年第1期41卷 95-100页

作者：把得东刘凤琼王鹢卢子伟郭兴冯展祖柳青田海贺援际赵伟利陈桐兰州空间技术物理研究所中国科学院兰州近代物理研究所兰州730000

研制低地球轨道(LEO)原子氧(AO)探测器并且开展AO环境在轨监测对于LEO航天器设计及防护具有重要意义。基于电阻分析法的碳膜AO传感器因工作时间较长、响应线性度较好且无污染,在国内外得到较多应用。为优化AO在轨监测手段,设计了一种矩... 详细信息

研制低地球轨道(LEO)原子氧(AO)探测器并且开展AO环境在轨监测对于LEO航天器设计及防护具有重要意义。基于电阻分析法的碳膜AO传感器因工作时间较长、响应线性度较好且无污染,在国内外得到较多应用。为优化AO在轨监测手段,设计了一种矩形碳膜AO传感器:采用阴极电弧放电工艺制备了厚约2.5μm的AO敏感碳膜;利用AO地面模拟设备,测试了传感器的性能,并表征了碳膜在AO作用前后的形貌。结果显示,传感器碳膜的初始电阻与AO试验过程中的实时测量电阻的比值R0/R与AO积分通量F具有较好的线性关系。根据测试结果推导,该传感器能探测的最大AO积分通量约为2.29×10^(21)atom·cm^(-2)。

关键词：原子氧碳膜传感器电阻测量剥蚀率

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Effect of partial remelting time on the initial carbide in semisolid structure of hypereutectic high Cr cast iron

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China Foundry 2004年第2期1卷 112-116页

作者： Zhifu HUANGI Jiandong xing Wei HE ding LI School of Materials Science and Engineering Xi’an Jiaotong UniversityXi’an 710049ShanxiP.R.China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072Shanxi P.R.China

In order to review the effect of partial remelting time on the morphology of initial carbides, semisolid ingots of hypereutectic high Cr17 cast iron were remelted at 1270℃ for four different times, and the changing characteristics of shape factor and the equivalent diameter of initial carbides were analyzed quantitatively using a Leica image analyzer. The results indicate that firstly, the evolution process of the initial carbides' morphology undergoes melting, spheroidization and refining during the partial remelting; secondly, the solute diffusion and interface tension take dominant roles at the primary and the middle-final stages respectively in the process of initial carbide evolution; finally, a perfect structure can be obtained by remelting semisolid ingots at 1270℃ for 15 min.

关键词： semisolid hypereutectic high Cr cast iron partial remelting time image analysis morphology of initial carbides

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Balanced and Coordinated Development of Chemistry in China

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Science Foundation in China 2007年第2期15卷 46-49页

作者： He Tianping Wang Fei ding Hong xing Jiangping Research Center for Philosophy of Science and Technology Shanxi University Taiyuan 030006 P. R . China College of Physical Education Shanxi University Taiyuan 030006 P. R. China

Balanced and coordinated development of Chemistry has narrow sense and generalized com- *** former only refers to the balanced layout and coordinated development among'every discipline and specialty in chemistry',and the latter taking the balanced layout of discipline as core and synthetically balancing the talent troop,the region distribution,the national strategy demand as well as the social affect and so *** the present,the chemistry in China totally represents discipline bal- ance and coordination,and interdisciplinary is obvi- ous.

关键词： chemistry discipline balance coordinated development

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岩石非对称凸起结构面抗剪特性试验研究

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山东科技大学学报（自然科学版） 2024年第4期43卷 23-32页

作者：郑菲魏传文王相龙杨旭旭赵玉棣邵行满新杰张长安周洋洋薛洪运山东科技大学土木工程与建筑学院山东青岛266590 山东高速基础设施建设有限公司山东济南250101 山东省交通规划设计院集团有限公司山东济南250101

基于楔齿形结构面形貌特征,制作3种不同形貌的结构面,研究了楔齿结构特征参数最大潜在接触面积比A_(0)在不同法向应力作用下对结构面剪切特性的影响规律。试验结果表明,结构面法向应力较小、A_(0)较大情况下的破坏模式主要是爬坡磨损,... 详细信息

基于楔齿形结构面形貌特征,制作3种不同形貌的结构面,研究了楔齿结构特征参数最大潜在接触面积比A_(0)在不同法向应力作用下对结构面剪切特性的影响规律。试验结果表明,结构面法向应力较小、A_(0)较大情况下的破坏模式主要是爬坡磨损,其剪切应力-位移曲线呈现滑移型;随着法向应力增大、A_(0)减小,破坏模式逐渐转变为爬坡切齿和完全剪断破坏,其剪切应力-位移曲线呈现峰值剪断Ⅰ型和峰值剪断Ⅱ型。法向应力增大限制了持续剪胀效应,而A 0的减小改变了迎坡面的受力,使凸起在发生剪断时的有效承载面积增大,从而影响结构面抗剪强度。基于试验结果提出了新的结构面抗剪强度模型,为岩石非对称凸起结构面抗剪强度计算提供了参考依据。

关键词：岩石非对称凸起最大潜在接触面积比结构面破坏模式抗剪特性

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实用心脑肺血管病杂志 2024年第8期32卷 43-47页

作者：赵锦程王星李起超彭晓辉安明华吴磊王永恒河北省秦皇岛市第一医院神经外科二病区 066300 河北省秦皇岛市第一医院内分泌科二病区 066300 河北省退役军人总医院外一科河北省邢台市054000 河北省秦皇岛市海港医院超声科 066300

目的探讨C1q肿瘤坏死因子相关蛋白9(CTRP9)与急性缺血性脑卒中(AIS)患者全因死亡及卒中复发的关系。方法回顾性选取2020年1月—2021年6月在秦皇岛市第一医院住院的AIS患者367例为研究对象。收集患者临床资料,出院后第3、12、24个月通过... 详细信息

目的探讨C1q肿瘤坏死因子相关蛋白9(CTRP9)与急性缺血性脑卒中(AIS)患者全因死亡及卒中复发的关系。方法回顾性选取2020年1月—2021年6月在秦皇岛市第一医院住院的AIS患者367例为研究对象。收集患者临床资料,出院后第3、12、24个月通过门诊复查或电话随访收集患者全因死亡和卒中复发情况。采用多因素Cox比例风险回归分析探讨AIS患者全因死亡和卒中复发的影响因素。结果367例AIS患者中,随访期间死亡20例(5.4%),卒中复发45例(12.3%)。生存与死亡者年龄、有心房颤动史者占比、有冠心病史者占比、TOAST分型、入院时美国国立卫生研究院卒中量表(NIHSS)评分、出院时NIHSS评分、入院时改良Rankin量表(mRS)评分、出院时mRS评分、中性粒细胞计数、红细胞体积分布宽度(RDW)、CTRP9比较,差异有统计学意义(P<0.05)。卒中复发与非卒中复发者有卒中史者占比、有冠心病史者占比、TOAST分型比较,差异有统计学意义(P<0.05)。多因素Cox比例风险回归分析结果显示,年龄〔HR=1.073,95%CI(1.020~1.128)〕、冠心病史〔HR=6.572,95%CI(1.700~25.406)〕、CTRP9〔HR=1.008,95%CI(1.001~1.015)〕是AIS患者全因死亡的独立影响因素,冠心病史〔HR=4.949,95%CI(2.047~11.964)〕是AIS患者卒中复发的独立影响因素(P<0.05)。结论CTRP9是AIS患者全因死亡的独立影响因素,尚未发现CTRP9是AIS患者卒中复发的独立影响因素。

关键词：缺血性卒中 C1q肿瘤坏死因子相关蛋白9 死亡复发

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Species richness and composition of shrub-encroached grasslands in relation to environmental factors in northern China

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Journal of Plant Ecology 2019年第1期12卷 56-66页

作者： Luhong Zhou Haihua Shen Leiyi Chen He Li Pujin Zhang Xia zhao Taoyu Liu Shangshi Liu Aijun xing Huifeng Hu Jingyun Fang State Key Laboratory of Vegetation and Environmental Change Institute of BotanyThe Chinese Academy of SciencesNo.20 NanxincunXiangshanBeijing 100093China University of Chinese Academy of Sciences No.19A Yuquan RdShijingshan DistrictBeijing 100049China Inner Mongolia Prataculture Research Center Chinese Academy of SciencesHohhot 010031China Department of Ecology College of Urban and Environmental Sciencesand Key Laboratory of Earth Surface Processes of the Ministry of EducationPeking UniversityNo.5 Yiheyuan RdHaidian DistrictBeijing 100871China

Aims Shrub encroachment has taken place in many of China’s northern *** study attempts to answer the following questions:which plant communities are present in these shrub-encroached grasslands(SEGs)?What are the species richness and composition of these communities?Which environmental factors determine the spatial distribution thereof?Methods We investigated the community characteristics of 255 SEG plots with a size of 20 m×20 m at 69 locations across grasslands in northern *** each plot,paired 1-m^(2) quadrats were estab-lished within shrub patches and the neighbouring grassy matrix to record herb species *** quantitative character-istics(abundance,coverage and height)of herbs were meas-ured in 0.25-m2 subquadrats,and soil samples were collected in the ***-way indicator species analysis(TWINSPAN),detrended canonical analysis(DCA)and canonical correspond-ence analysis(CCA)were used for community clustering and *** Findings The DCA and TWINSPAN results suggested that the SEGs in northern China can be divided into six community types:Potentilla fruticosa+Carex atrofusca,Spiraea hypericifolia+Festuca ovina,Caragana acanthophylla+Stipa sareptana,Caragana microphylla+Leymus chinensis,Caragana microphylla+Stipa klemenzii and Caragana tibetica+Cleistogenes *** a regional scale,climate and soil nutrients controlled the spatial patterns of species richness and community composition of the SEGs in northern *** exerted a negative impact,whereas precipitation and nutrients had positive effects on species *** the environmental factors used,climate was the major controller of the variations in commu-nity *** results provide new insights into the community composition of SEGs in China and enrich the global dataset of SEGs.

关键词： CCA community composition northern China shrub-encroached grasslands TWINSPAN

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Two new 19-oxygenated ent-kaurane diterpenoids from Isodon pharicus

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Chinese Chemical Letters 2010年第1期21卷 81-84页

作者： zhao, Yong Pu, Jian Xin Huang, Sheng Xiong Yang, Li Bin Xiao, Wei Lie Li, Li Mei ding, Li Sheng Sun, Han Dong Chinese Acad Sci Kunming Inst Bot State Key Lab Phytochem & Plant Resources W China Kunming 650204 Peoples R China Yunnan Normal Univ Coll Chem & Engn Kunming 650092 Peoples R China Chinese Acad Sci Chengdu Inst Biol Chengdu 610041 Peoples R China

Two new 19-oxygenated ent-kaurane diterpenoids,pharicinins D and E(1 and 2),together with an artifact,pharicinin D acetal (3) were isolated from the leaves of Isodon *** structures were determined by 1D and 2D NMR spe... 详细信息

关键词： Isodon pharicus Labiatae ent-Kaurane diterpenoid

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甘肃某含砷锑难处理金矿选矿试验研究

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黄金 2024年第6期45卷 45-49,54页

作者：赵福财栾东武丁雨波李玉玺桑胜华马鹏程山东国环固废创新科技中心有限公司甘肃招金贵金属冶炼有限公司

针对甘肃某含砷锑难处理金矿现场浮选过程中选别指标低的问题,开展了矿石工艺矿物学研究。在此基础上,进行了重选、浮选、中矿再磨再选、尾矿氰化浸出等试验研究,最终形成了尼尔森重选—中矿再磨再选—尾矿氰化浸出的联合工艺流程。采... 详细信息

针对甘肃某含砷锑难处理金矿现场浮选过程中选别指标低的问题,开展了矿石工艺矿物学研究。在此基础上,进行了重选、浮选、中矿再磨再选、尾矿氰化浸出等试验研究,最终形成了尼尔森重选—中矿再磨再选—尾矿氰化浸出的联合工艺流程。采用该流程,精矿金品位可达50.05 g/t,金综合回收率可达93.89%。较单一浮选工艺流程,该联合工艺流程的金回收率提高30百分点以上,为现场工艺流程改造提供了可行的技术方案。

关键词：含砷含锑难处理金矿氰化浸出尼尔森重选

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Hypoxia-induced factor-1 alpha upregulates vascular endothelial growth factor C to promote lymphangiogenesis and angiogenesis in breast cancer patients

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The Journal of Biomedical Research 2013年第6期27卷 478-485页

作者： Xiaojian Ni Yingchun zhao Jingjing Ma Tiansong Xia Xiaoan Liu Qiang ding Xiaoming Zha Shui Wang Department of Breast Surgery The First Affiliated Hospital of Nanjing Medical University Department of Breast Surgery The Second People's Hospital Affiliated with Wannan Medical College State Key Laboratory of Reproductive Medicine Department of Breast Surgery Nanjing Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University

Hypoxia-induced factor-1 alpha （HIF-1α） affects many effector molecules and regulates tumor lymphangio- genesis and angiogenesis during hypoxia. The aim of this study was to investigate the role of HIF-1α in the regu- lation of vascular endothelial growth factor C （VEGF-C） expression and its effect on lymphangiogenesis and an- giogenesis in breast cancer. Lymphatic vessel density （LVD）, microvessel density （MVD） and the expressions of HIF-1α and VEGF-C proteins were evaluated by immunohistochemistry in 75 breast cancer samples. There was a significant correlation between HIF-1α and VEGF-C （P = 0.014, r = 0.273, Spearman＇s coefficient of correlation）. HIF-1α and VEGF-C overexpression was significantly correlated with higher LVD （P = 0.003 and P = 0.017, re- spectively）, regional lymph nodal involvement （P = 0.002 and P = 0.004, respectively） and advanced tumor, node, metastasis （TNM） classification （P = 0.001 and P = 0.01, respectively）. Higher MVD was observed in the group expressing higher levels of HIF-1α and VEGF-C （P = 0.033 and P = 0.037, respectively）. Univariate analysis showed shorter survival time in patients expressing higher levels of HIF-1α and VEGF-C. HIF-1α was also found to be an independent prognostic factor of overall survival in multivariate analysis. The results suggest that HIF-1α may affect VEGF-C expression, thus acting as a crucial regulator of lymphangiogenesis and angiogenesis in breast cancer. This study highlights promising potential of HIF- 1α as a therapeutic target against tumor lymph node me- tastasis.

关键词： HIF-1α VEGF-C lymphangiogenesis angiogenesis breast cancer

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