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Crustal density structures and isostasy beneath the Western North China craton,Trans-North China Orogen,and surrounding regions

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Geoscience Frontiers 2020年第2期11卷 569-580页

作者： Min Gao Djordje Grujic qiu-ming cheng School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China State Key Lab of Geological Processes and Mineral Resources China University of GeosciencesBeijing 100083China Department of Earth Sciences Dalhousie UniversityHalifaxB3H 4R2Canada

To determine the lateral and vertical variations in crustal structure and their influence on the seismicity of the Western North China Craton,the Trans-North China Orogen,and the surrounding regions,the wavelet multi-scale structures,Moho depth,crustal density structures,and isostatic state are modelled using Bouguer gravity anomaly data,topography,and earthquake focal *** obtained homogeneous crustal densities and deviations of<1 km between the crustal thicknesses estimated from the isostatic model and those inverted from the Bouguer gravity anomalies in the Ordos Block,the Inner Mongolia Suture Zone,the Sichuan Basin,and the Jizhong *** results provide new evidence for relatively simple and stable continental crustal structures,and indicate that these regions will remain stable in both the vertical and lateral *** Hetao Graben,Yinchuan Graben,Weihe Basin,and Shanxi graben system have heterogeneous crustal densities and are isostatically *** contrast,the crust beneath the Yinshan Uplift,Lvliang Uplift,and northern and central Taihang Uplift is thin and *** heterogeneous crustal densities and non-isostatic state beneath the Tibetan Plateau and Qinling Central China Orogen indicate that these two blocks are unstable in the vertical and lateral *** Cenozoic deformation of the North China Craton is thought to be driven by lithospheric stresses related to the India-Eurasia collision and Pacific slab retreat in South East Asia,we suggest that gravitational potential energy created by the heterogeneous crustal structure modulates these first-order *** results of this study could constrain the causes of seismicity in systems surrounding the Ordos Block.

关键词： Western North China craton Trans-North China Orogen Bouguer gravity anomaly Crustal density structure Gravitational potential energy

SYNTHESIS OF DIAMMINEPLATINUM(Ⅱ)ASCORBATE AND STRUCTURE COMPARISON WITH ITS DACH DERIVATIVES

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Chinese Chemical Letters 1991年第2期2卷 121-122页

作者： Zhong Xian HUANG Zhen qiu ming Qin cheng Xie Jing LI Dept.of Chemistry,Fudan University,Shanghai,China 200433 Dept.of Chemical Engineering,Shanghai University of Engineering Science,Shanghai,China 200335Center of Measurement and Analysis,Fudan University,Shanghai,China 200433

An antitumour complex,cis-diammineplatinum(Ⅱ)ascorbate,has been synthesized and its X-ray structure is *** chemistry calculation compared with its diaminecyclohexane derivatives indicates that they have different ele... 详细信息

关键词： SYNTHESIS OF DIAMMINEPLATINUM ASCORBATE AND STRUCTURE COMPARISON WITH ITS DACH DERIVATIVES ITS

Clinical experience of 3T intraoperative magnetic resonance imaging integrated neurosurgical suite in Shanghai Huashan Hospital

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Chinese Medical Journal 2012年第24期125卷 4328-4333页

作者： qiu Tian-ming YAO cheng-jun WU Jin-song PAN Zhi-guang ZHUANG Dong-xiao XU Gen ZHU Feng-ping LU Jun-feng GONG Xiu ZHANG Jie YANG Zhong SHI Jian-bin HUANG Feng-ping MAO Ying ZHOU Liang-fu Glioma Surgery Division Department of Neurosurgery Huashan Hospital Fudan University Shanghai 200040 China

Background Intraoperative magnetic resonance imaging （iMRI） dates back to the 1990s and has been successfully applied in neurosurgery but they were low-field iMRI （〈1.0T）. This paper reports the clinical experience with a 3T iMRI-integrated neurosurgical suite in Huashan Hospital, Shanghai, China. Methods From September 2010 through March 2012, 373 consecutive patients underwent neurological surgery under guidance with 3T iMRI. A retrospective analysis was conducted regarding clinical efficiency. Results All surgery in the 373 patients was safe. The ratio of gross total resection for cerebral gliomas （n=161） was increased from 55.90% to 87.58%. The ratio of benefit in extent of resection was 39.13%. One hundred and fifty eight of the 161 glioma patients accomplished follow-up at 3 months postoperatively. Twenty of 161 patients （12.42%） suffered from early motor deficit after surgery. Late motor deficit was however observed in five of 158 patients （3.16%）. Twenty-one of 161 patients （13.04%） had early speech deficit and late speech deficit was only observed in six of 158 patients （3.80%）. The ratio of gross total resection for pituitary adenomas （n=49） was increased from 77.55% to 85.71%. The ratio of benefit in extent of resection was 10.2%. There were no iMRI-related adverse events even for patients who underwent awake craniotomy. Conclusion The 3T iMRI integrated neurosurgical suite provides high-quality intraoperative structural and functional imaging for real-time tumor resection control and accurate functional preservation, resulting in an improvement in maximal safe brain surgery.

关键词： intraoperative magnetic resonance imaging glioma pituitary adenoma

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穴播机分种、取种器的研制

机械研究与应用 2010年第6期23卷 125-129页

作者：殷晖仇成民汪小平河北钢铁集团承钢公司钒制品厂河北承德067000

对国内外穴播机中常采用的取种机构进行了分析比较,结合各自的特点,研制出了一种夹持自锁式取种机构。这种取种机构性能稳定,通用性较强。

关键词：穴播器取种机构研制

Zero chiral bulk modes in 3D Weyl metamaterials

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Science Bulletin 2019年第12期64卷 799-801页

作者： Yang ming cheng-Wei qiu School of Physics and Electronic Engineering Changshu Institute of TechnologySuzhou 215000China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore

In the Weyl semimetals, a special type of one-way chiral zero mode (CZM) can be supported if a strong magnetic field is applied. The corresponding CZM is related to the zero-order Landau level for relativistic particles in Dirac or Weyl systems. This special energy level can lead to chiral anomaly, which describes the phenomenon of breaking the conservation of chirality [1]. Under the action of an effective magnetic field, the zeroth Landau mode can be expected to propagate only in the chiral direction according to the chirality (left-handed or right-handed) of the Weyl points and the magnetic field direction. Distinguished from the topological insulators, such a one-way propagation mode is a bulk state rather than a surface state or edge state that travels along the interface. Recently, the discovery of Dirac or Weyl degeneracies in the electronic and photonic systems brings opportunities for experimental detection of the chiral zeroth Landau levels [2,3]. Notwithstanding, the chiral Landau level in the 3D photonic system has not been observed yet.

关键词： chiral zero mode(CZM) chirality topological insulators

A Double-Stage Surrogate-Based Shape Optimization Strategy for Blended-Wing-Body Underwater Gliders

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China Ocean Engineering 2020年第3期34卷 400-410页

作者： LI cheng-shan WANG Peng qiu Zhi-ming DONG Hua-chao School of Marine Science and Technology Northwestern Polytechnical UniversityXi’an 710072China

In this paper,a Double-stage Surrogate-based Shape Optimization(DSSO)strategy for Blended-Wing-Body Underwater Gliders(BWBUGs)is proposed to reduce the computational *** this strategy,a double-stage surrogate model is developed to replace the high-dimensional objective in shape ***,several First-stage Surrogate Models(FSMs)are built for the sectional airfoils,and the second-stage surrogate model is constructed with respect to the outputs of ***,a Multi-start Space Reduction surrogate-based global optimization method is applied to search for the *** order to validate the efficiency of the proposed method,DSSO is first compared with an ordinary One-stage Surrogate-based Optimization strategy by using the same optimization ***,the other three popular surrogate-based optimization methods and three heuristic algorithms are utilized to make *** indicate that the lift-to-drag ratio of the BWBUG is improved by 9.35%with DSSO,which outperforms the comparison ***,DSSO reduces more than 50%of the time that other methods used when obtaining the same level of ***,some considerations of the proposed strategy are further discussed and some characteristics of DSSO are identified.

关键词： shape optimization double-stage surrogate model kriging blended-wing-body underwater glider lift-to-drag ratio

More than two decades trapped

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Light(Science & Applications) 2018年第1期7卷 233-235页

作者： cheng-Wei qiu Lei-ming Zhou Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117583Singapore

Optical tweezers,crowned by Nobel Prize the first time in 1990s,have widely impacted the research landscape of atom cooling,particle manipulation/sorting,and *** more than two decades of steady development,it received the deserving recognition once again in *** advancements across various disciplines are believed to be spurred furthermore by this important tool of optical manipulation.

关键词： furthermore crown deser

Six-membered-ring inorganic materials: definition and prospects

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National Science Review 2021年第1期8卷 175-197页

作者： Gang Liu Xing-qiu Chen Bilu Liu Wencai Ren Hui-ming cheng Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences School of Materials Science and Engineering University of Science and Technology of China Shenzhen Geim Graphene Center Tsinghua-Berkeley Shenzhen Institute and Shenzhen International Graduate School Tsinghua University

The six-membered ring (SMR) is a common structure unit for numerous material systems. These materials include, but are not limited to, the typical two-dimensional materials such as graphene, h-BN, and transition metal dichalcogenides, as well as three-dimensional materials such as beryllium, magnesium, Mg B2 and Bi2Se3. Although many of these materials have already become ‘stars’ in materials science and condensed-matter physics, little attention has been paid to the roles of the SMR unit across a wide range of compositions and structures. In this article, we systematically analyze these materials with respect to their very basic SMR structural unit, which has been found to play a deterministic role in the occurrence of many intriguing properties and phenomena, such as Dirac electronic and phononic spectra, superconductivity and topology. As a result, we have defined this group of materials as SMR inorganic materials, opening up a new perspective on materials research and development. With their unique properties, SMR materials deserve wide attention and in-depth investigation from materials design, new physical discoveries to target-wizard applications. It is expected that SMR materials will find niche applications in next-generation information technology, renewable energy, space, etc.

关键词： six-membered-ring (SMR) materials SMR concept SMR physics SMR chemistry SMR mechanics SMR classifications

米非司酮联合水囊或依沙吖啶用于瘢痕子宫中晚期妊娠引产的研究

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医药论坛杂志 2017年第1期38卷 30-32,36页

作者：刘慧丽党群王秋明李鹏程郑州大学人民医院(河南省人民医院)妇产科郑州450003

目的为瘢痕子宫中晚期妊娠引产探索一种安全、有效的引产方式。方法回顾性分析2010年1月至2014年12月于郑州大学人民医院产科引产的瘢痕子宫孕妇118例,孕周为15~33周,将其分为2组,A组为米非司酮联合依沙吖啶引产,共61例,B组为米非司酮... 详细信息

目的为瘢痕子宫中晚期妊娠引产探索一种安全、有效的引产方式。方法回顾性分析2010年1月至2014年12月于郑州大学人民医院产科引产的瘢痕子宫孕妇118例,孕周为15~33周,将其分为2组,A组为米非司酮联合依沙吖啶引产,共61例,B组为米非司酮联合水囊引产,共57例;比较分析这2种引产方式的产程、引产成功率、产后出血量、胎盘胎膜残留率及严重并发症发生率。结果两组孕妇产后出血量、胎盘胎膜残留率比较差异无统计学意义(P>0.05),B组引产时间短于A组,差异有统计学意义(P<0.05),B组引产成功率高于A组,差异有统计学意义(P<0.05),两组均未出现严重并发症。结论米非司酮联合依沙吖啶或水囊在瘢痕子宫中晚期妊娠引产中均安全、有效,但是米非司酮联合水囊引产成功率更高,引产时间更短,适用范围更广;2种引产方式引产过程中均需严密监测。

关键词：瘢痕子宫中晚期妊娠引产米非司酮依沙吖啶水囊