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Dynamic response and failure process of horizontal-layered fractured structure rock slope under strong earthquake

Journal of Mountain Science 2024年第3期21卷 882-900页

作者： WANG tong LIU Xianfeng hou Zhaoxu XU Jiahang ZHANG Jun YUAN Shengyang JIANG Guanlu HU Jinshan School of Civil Engineering Southwest Jiaotong UniversityChengdu 610031China Key Laboratory of High-Speed Railway Engineering of Ministry of Education Southwest Jiaotong UniversityChengdu 610031China School of Civil Engineering Xinjiang Institute of EngineeringUrumqi 830023China China Railway First Survey and Design Institute Group Co.LTD Xi'an 710043China

Rock slope with horizontal-layered fractured structure(HLFS)has high stability in its natural ***,a strong earthquake can induce rock fissure expansion,ultimately leading to slope *** this study,the dynamic response,failure mode,and spectral characteristics of rock slope with HLFS under strong earthquake conditions were investigated based on the large-scale shaking table model *** this basis,multiple sets of numerical calculation models were further established by UDEC discrete element *** influencing factors were considered in the parametric study of numerical simulations,including slope height,slope angle,bedding-plane spacing and secondary joint spacing as well as bedrock dip *** results showed that the failure process of rock slope with HLFS under earthquake action is mainly divided into four phases,i.e.,the tensile crack of the slope shoulder joints and shear dislocation at the top bedding plane,the extension of vertical joint cracks and increase of shear displacement,the formation of step-through sliding surfaces and the instability,and finally collapse of fractured rock *** acceleration response of slopes exhibits elevation amplification effect and surface *** simulations indicate that the seismic stability of slopes with HLFS exhibits a negative correlation with slope height and angle,but a positive correlation with bedding-plane spacing,joint spacing,and bedrock dip *** results of this study can provide a reference for seismic stability evaluation of weathered rock slopes.

关键词： Seismic behavior Horizontal layered Weathered rock slope Shaking table test Failure mode

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Lossless Compression Method for the Magnetic and Helioseismic Imager(MHI)Payload

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Research in Astronomy and Astrophysics 2024年第4期24卷 214-221页

作者： Li-Yue tong Jia-Ben Lin Yuan-Yong Deng Kai-Fan Ji Jun-Feng hou Quan Wang Xiao Yang National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Key Laboratory of Solar Activity and Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Yunnan Observatories Chinese Academy of SciencesKunming 650216China

The Solar Polar-orbit Observatory(SPO),proposed by Chinese scientists,is designed to observe the solar polar regions in an unprecedented way with a spacecraft traveling in a large solar inclination angle and a small ***,one of the most significant challenges lies in ultra-long-distance data transmission,particularly for the Magnetic and Helioseismic Imager(MHI),which is the most important payload and generates the largest volume of data in *** this paper,we propose a tailored lossless data compression method based on the measurement mode and characteristics of MHI *** background out of the solar disk is removed to decrease the pixel number of an image under *** predictive coding methods are combined to eliminate the redundancy utilizing the correlation(space,spectrum,and polarization)in data set,improving the compression *** results demonstrate that our method achieves an average compression ratio of *** compression time is also less than the general observation *** method exhibits strong feasibility and can be easily adapted to MHI.

关键词： methods:data analysis techniques:image processing Sun:magnetic fields Sun:photosphere

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氧逸度对攀枝花岩体成岩成矿作用的制约:来自锆石微量元素的证据

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岩石学报 2020年第7期36卷 2116-2126页

作者：罗雕侯通潘荣昊中国地质大学地质过程与矿产资源国家重点实验室北京100083

本文报道了攀枝花钒钛磁铁矿含矿岩体边缘岩相带中的苦橄玢岩和岩体中淡色辉长岩的锆石微量元素特征。结果表明二者所含锆石都具有明显的Ce正异常和Eu负异常,以及轻稀土元素亏损和重稀土元素富集的特征,其Th/U比值为0.35~3.23,都属于典... 详细信息

本文报道了攀枝花钒钛磁铁矿含矿岩体边缘岩相带中的苦橄玢岩和岩体中淡色辉长岩的锆石微量元素特征。结果表明二者所含锆石都具有明显的Ce正异常和Eu负异常,以及轻稀土元素亏损和重稀土元素富集的特征,其Th/U比值为0.35~3.23,都属于典型的岩浆锆石。本次研究利用最新实验标定的锆石氧逸度计对苦橄玢岩和淡色辉长岩的氧逸度进行了估算。估算结果表明苦橄玢岩和淡色辉长岩均具较高的氧逸度,分别为QFM+0.3~QFM+2.5和QFM+0.7~QFM+3(QFM为石英-铁橄榄石-磁铁矿缓冲剂)。苦橄玢岩作为来自深部岩浆房侵入到攀枝花主岩体的富橄榄石"晶粥体",其高氧逸度的特征反映出攀枝花岩体的原生岩浆以及地幔源区是相对氧化的,而导致这一结果的原因很可能与古老俯冲事件导致的地幔交代作用有关。通过地幔柱-岩石圈相互作用,在较高氧逸度下发生部分熔融形成了铁质苦橄岩及其堆晶作用产物苦橄玢岩。此外,淡色辉长岩的氧逸度也显示出较高的特征,这说明这种氧化的特征很可能是贯穿了整个成岩过程的,对钒钛磁铁矿成矿,特别是导致铁钛氧化物早期结晶起到了不可忽视的作用。

关键词：峨眉山大火成岩省锆石氧逸度苦橄玢岩淡色辉长岩

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High-rate electrochemical H_(2)O_(2) production over multimetallic atom catalysts under acidic–neutral conditions

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Carbon Energy 2024年第1期6卷 44-62页

作者： Yueyu tong Jiaxin Liu Bing-Jian Su Jenh-Yih Juang Feng hou Lichang Yin Shi Xue Dou Ji Liang Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjinChina Institute for Superconducting and Electronic Materials University of WollongongInnovation CampusNorth WollongongNew South WalesAustralia Department of Electrophysics National Chiao Tung UniversityHsinchuTaiwanChina Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyangLiaoningChina Institute of Energy Materials Science University of Shanghai for Science and TechnologyShanghaiChina

Hydrogen peroxide(H_(2)O_(2))production by the electrochemical 2-electron oxygen reduction reaction(2e−ORR)is a promising alternative to the energy-intensive anthraquinone process,and single-atom electrocatalysts show the unique capability of high selectivity toward 2e−ORR against the 4e−*** extremely low surface density of the single-atom sites and the inflexibility in manipulating their geometric/electronic configurations,however,compromise the H_(2)O_(2) yield and impede further performance ***,we construct a family of multiatom catalysts(MACs),on which two or three single atoms are closely coordinated to form high-density active sites that are versatile in their atomic configurations for optimal adsorption of essential*OOH *** them,the Cox–Ni MAC presents excellent electrocatalytic performance for 2e−ORR,in terms of its exceptionally high H_(2)O_(2) yield in acidic electrolytes(28.96 mol L^(−1) gcat.^(−1) h^(−1))and high selectivity under acidic to neutral conditions in a wide potential region(>80%,0–0.7 V).Operando X-ray absorption and density functional theory analyses jointly unveil its unique trimetallic Co2NiN8 configuration,which efficiently induces an appropriate Ni–d orbital filling and modulates the*OOH adsorption,together boosting the electrocatalytic 2e−ORR *** work thus provides a new MAC strategy for tuning the geometric/electronic structure of active sites for 2e−ORR and other potential electrochemical processes.

关键词： hydrogen peroxide production multiatom catalysts operando X-ray adsorption spectrum reaction mechanism tendency structure-property relation

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Air tamponade in retinal detachment surgery followed by ultra-widefield fundus imaging system

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International Journal of Ophthalmology(English edition) 2018年第7期11卷 1198-1203页

作者： Qian-Yin Chen Yun-Xia Tang Yan-Qiong He Hui-Min Lin Ru-Long Gao Meng-Yuan Li Jin-tong hou Hong-Jie Ma Jing-Lin Zhang Guangzhou Aier Eye Hospital Guangzhou 510010 Guangdong Province China Aier School of Ophthalmology Central South UniversityChangsha 410015 Hunan Province China

AIM： To report the surgical result of pars plana vitrectomy（PPV） with air tamponade for rhegmatogenous retinal detachment（RRD） by ultra-widefield fundus imaging system. METHODS： Of 25 consecutive patients（25 eyes） with fresh primary RRD and causative retinal break and vitreous traction were presented. All the patients underwent PPV with air tamponade. Visual acuity（VA） was examined postoperatively and images were captured by ultrawidefield scanning laser ophthalmoscope system（Optos）. RESULTS： Initial reattachment was achieved in 25 cases（100%）. The air volume was 〉60% on the postoperative day（POD） 1. The ultra-widefield images showed that the retina was reattached in all air-filled eyes postoperatively. The retinal break and laser burns in the superior were detected in 22 of 25 eyes（88%）. A missed retinal hole was found under intravitreal air bubble in 1 case（4%）. The air volume was range from 40% to 60% on POD 3. A doublelayered image was seen in 25 of 25 eyes with intravitreal gas. Retinal breaks and laser burns around were seen in the intravitreal air. On POD 7, small bubble without effect was seen in 6 cases（24%） and bubble was completely disappeared in 4 cases（16%）. Small oval bubble in the superior area was observed in 15 cases（60%）. There were no missed and new retinal breaks and no retinal detachment in all cases on the POD 14 and 1 mo and last follow-up. Air disappeared completely on a mean of 9.84 d postoperatively. The mean final postoperative bestcorrected visual acuity（BCVA） was 0.35 log MAR. Mean final postoperative BCVA improved significantly relative to mean preoperative（P〈0.05）. Final VA of 0.3 log MAR or better was seen in 13 eyes. CONCLUSION： PPV with air tamponade is an effective management for fresh RRD with superior retinal breaks. The ultra-widefield fundus imaging can detect postoperative retinal breaks in air-filled eyes. It would be a useful facility for follow-up after PPV with air tamponade. Facedown position and acquired visual rehabilit

关键词： rhegmatogenous retinal detachment air tamponade ultra-widefield fundus imaging system

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圆形浮选机在沙特某磷矿的应用

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化工矿物与加工 2017年第11期46卷 38-39页

作者：侯彤中蓝连海设计研究院

圆形浮选机的槽体为圆柱形,泡沫槽为放射状周边溢流形式,可使泡沫溢流加快,能耗降低;采用拥有专利技术的定子-转子系统,停车后容易启动,药剂耗量低,排除了短路现象;另外采用的液位检测和控制系统较为先进,这些特点使该设备在沙特某磷矿... 详细信息

圆形浮选机的槽体为圆柱形,泡沫槽为放射状周边溢流形式,可使泡沫溢流加快,能耗降低;采用拥有专利技术的定子-转子系统,停车后容易启动,药剂耗量低,排除了短路现象;另外采用的液位检测和控制系统较为先进,这些特点使该设备在沙特某磷矿的选矿应用中取得了良好的选别指标。

关键词：圆形浮选机沙特磷矿选矿

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A successful team treatment for left main shock syndrome

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Journal of Geriatric Cardiology 2013年第3期10卷 302-304页

作者： Bin Que Yu-tong Cheng Hai Gao Xiao-tong hou Ran Dong Nan Li Shao-Ping Nie Beijing Anzhen Hospital of the Capital University of Medical Sciences Beijing 100029 China

Acute myocardial infarction complicated by cardiogenic shock and left main coronary artery disease is called left main shock syndrome. It is reported that the morbility and mortality of the syndrome is approximately 0.46%and 55%-80%, respectively. However, the best treat-ment strategy in these cases is unknown. In this article, we present a patient with LMSS who successively underwent emergency percutane-ous coronary intervention and coronary artery bypass grafting with hemodynamic support within 5 days. The patient is now on his three month uneventful out-patient follow-up.

关键词： Dissection Graft patency Left internal mammary artery grafts

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伍尔芙在《达洛卫夫人》中的“非理性”精神抗争

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辽宁大学学报（哲学社会科学版） 2007年第3期35卷 51-53页

作者：侯彤沈阳大学国际商学院辽宁沈阳110044

英国女作家弗吉尼亚.伍尔芙在她的小说《达洛卫夫人》中以意识流的形式和非理性主义思想观点深刻批判了统治社会的行为准则和道德标准、揭露了理性下的残酷现实。面对扭曲的灵魂,为了创造人与人之间的和谐温情的精神境界,她表现出强烈... 详细信息

英国女作家弗吉尼亚.伍尔芙在她的小说《达洛卫夫人》中以意识流的形式和非理性主义思想观点深刻批判了统治社会的行为准则和道德标准、揭露了理性下的残酷现实。面对扭曲的灵魂,为了创造人与人之间的和谐温情的精神境界,她表现出强烈的抗争。文章将从伍尔芙的创作背景和动机入手,分析她是如何通过小说人物进行“非理性”精神抗争的。

关键词：非理性精神抗争意识流

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振动磨在粉体加工中的应用

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化工矿物与加工 2014年第10期43卷 46-47页

作者：侯彤中蓝连海设计研究院

在介绍振动磨工作原理、结构形式及常用工艺流程的基础上,结合某粉体工程设计实例介绍了振动磨设备配置形式及工艺参数的选择,为相关企业选用振动磨提供了参考。

关键词：振动磨粉体加工设计

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A novel profile modification HPF-Co gel satisfied with fractured low permeability reservoirs in high temperature and high salinity

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Petroleum Science 2024年第1期21卷 683-693页

作者： Ya-Kai Li Ji-Rui hou Wei-Peng Wu Ming Qu Tuo Liang Wei-Xin Zhong Yu-Chen Wen Hai-tong Sun Yi-Nuo Pan China University of Petroleum Beijing Beijing102249China PetroChina Tarim Oilfield Company Korla 841000XinjiangChina Key Laboratory of Improving Oil and Gas Recovery of Ministry of Education Northeast Petroleum University Daqing 163318HeilongjiangChina Xi'an Shiyou University Xi'an 710065ShaanxiChina Northwest Oilfield Company SINOPECUrumqi 830011XinjiangChina

Conformance control and water plugging are a widely used EOR method in mature ***,majority of conformance control and water plugging agents are unavoidable dehydrated situation in high-temperature and high-salinity low permeability ***,a novel conformance control system HPF-Co gel,based on high-temperature stabilizer(CoCl_(2)·H_(2)O,CCH)is *** HPF-Co bulk gel has better performances with high temperature(120℃)and high salinity(1×10^(5)mg/L).According to Sydansk coding system,the gel strength of HPF-Co with CCH is increased to code *** dehydration rate of HPF-Co gel is 32.0%after aging for 150 d at 120℃,showing excellent thermal *** rheological properties of HPF gel and HPF-Co gel are also *** results show that the storage modulus(G′)of HPF-Co gel is always greater than that of HPF *** effect of CCH on the microstructure of the gel is *** results show that the HPF-Co gel with CCH has a denser gel network,and the diameter of the three-dimensional network skeleton is 1.5-3.5μ*** 90 d of aging,HPF-Co gel still has a good three-dimensional *** spectroscopy results show that CCH forms coordination bonds with N and O atoms in the gel amide group,which can suppress the vibration of cross-linked sites and improve the stability at high *** core plugging test determines the optimized polymer gel injection strategy and injection velocity with HPF-Co bulk gel system,plugging rate exceeding 98%.Moreover,the results of subsequent waterflooding recovery can be improved by 17%.

关键词： Low permeability reservoir High-temperature resistant gel Complexation reaction Polymer gel injection strategy Plugging rate Enhanced oil recovery

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