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Exact mobility edges and topological phase transition in two-dimensional non-Hermitian quasicrystals

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Science China(Physics,Mechanics & Astronomy) 2022年第2期65卷 82-90页

作者： Zhi-hao Xu Xu Xia shu chen Institute of Theoretical Physics and State Key Laboratory of Quantum Optics and Quantum Optics Devices Shanxi UniversityTaiyuan 030006China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Chern Institute of Mathematics and LPMC Nankai UniversityTianjin 300071China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Yangtze River Delta Physics Research Center Liyang 213300China

The emergence of the mobility edge(ME)has been recognized as an important characteristic of Anderson *** difficulty in understanding the physics of the MEs in three-dimensional(3 D)systems from a microscopic image encourages the development of models in lower-dimensional systems that have exact *** most of the previous studies are concerned with one-dimensional(1 D)quasiperiodic systems,the analytic results that allow for an accurate understanding of two-dimensional(2 D)cases are *** this work,we disclose an exactly solvable 2 D quasicrystal model with parity-time(PT)symmetry displaying exact *** the thermodynamic limit,we unveil that the extended-localized transition point,observed at the PT symmetry breaking point,is topologically characterized by a hidden winding number defined in the dual *** coupling waveguide platform can be used to realize the 2 D non-Hermitian quasicrystal model,and the excitation dynamics can be used to detect the localization features.

关键词： quasicrystals mobility edges non-Hermitian systems localization properties

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双层平流式二沉池结构施工质量控制技术

工程建设与设计 2018年第9期 259-261,265页

作者：陈舒豪霍佳天吴晓刚中建三局集团有限公司(北京) 北京100097

双层平流式沉淀池作为本工程二级污水处理工艺中重要的一环,其构件形式根据污水处理工艺要求设计,存在大量的八角柱、加腋墙、锥形墙等异形混凝土构件,其结构精度不但会对链板式刮泥机的安装造成影响,对后期设备的运行也十分关键,过程... 详细信息

双层平流式沉淀池作为本工程二级污水处理工艺中重要的一环,其构件形式根据污水处理工艺要求设计,存在大量的八角柱、加腋墙、锥形墙等异形混凝土构件,其结构精度不但会对链板式刮泥机的安装造成影响,对后期设备的运行也十分关键,过程施工中,针对过水堰板标高、异形混凝土构件尺寸、池道净空、池底坡度平整度等的控制尤为重要。

关键词：双层平流式二沉池污水处理厂质量控制

Six-Degree-of-Freedom Measurement of Plate Anchors in Centrifuge by Magnetometers

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China Ocean Engineering 2022年第6期36卷 871-879页

作者： shu shuang chen Chuan chen hao-ran LAI Ying Key Laboratory of the Ministry of Education for Geomechanics and Embankment Engineering College of Civil and Transportation EngineeringHohai UniversityNanjing 210098China MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering College of Civil Engineering and ArchitectureZhejiang UniversityHangzhou 310058China

The six-degree-of-freedom movement of an offshore plate anchor is essential to evaluate anchor *** an emerging technology,magnetometer has shown its potential in measuring the six-degree-of-freedom movement of offshore anchors under 1-g model laboratory *** paper presents the feasibility of adopting a magnetometer system in geotechnical centrifuge *** factors that may affect the measuring accuracy of the magnetometer system are *** results demonstrate that the magnetometer system can accurately catch the anchor movement in the soils with the restrictions of:(1)the model anchor was made with stainless steel;(2)the system was placed at least 30 cm away from the side wall of soil model tank;(3)started the measurement when the artificial acceleration by centrifuge was stable.

关键词： magnetometer offshore plate anchors centrifuge testing trajectory orientation

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高压旋喷桩锚杆在结构抗浮技术的应用前景

工程建设与设计 2018年第5期 226-228页

作者：陈舒豪吴晓刚霍佳天中建三局集团有限公司(北京) 北京100097

沿海地区及污水处理改造工程中,地基土为软土或淤泥质土情况较为常见,为保证建筑或构筑物的结构安全,解决软土地基的结构抗浮问题显得尤为重要。最常用的灌浆抗浮锚杆当在土层情况良好的土体中实施时,其锚杆体可与土体有效锚固,抗浮效... 详细信息

沿海地区及污水处理改造工程中,地基土为软土或淤泥质土情况较为常见,为保证建筑或构筑物的结构安全,解决软土地基的结构抗浮问题显得尤为重要。最常用的灌浆抗浮锚杆当在土层情况良好的土体中实施时,其锚杆体可与土体有效锚固,抗浮效果明显,但当土层为软黏性土、淤泥质土等软土地基时,因锚杆体无法与土体有效锚固,无法充分发挥其锚固力,抗浮效果较差,往往无法达到设计抗浮的要求。论文介绍一种高压旋喷桩抗浮锚杆施工技术,该锚杆体系相对于普通的灌浆锚杆抗拔力有大幅度的提高,很好地解决了淤泥质土的结构抗浮问题,并在施工工期、工艺特点、经济效益及环境效益方面有着独特的优势,具有良好的推广应用前景。

关键词：高压旋喷桩抗浮锚杆淤泥质土结构抗浮应用前景

Preparation of Low Ratio Magnesium Ccement by Acid Leaching Treatment of Boron Mud

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期 120-129页

作者：杨梅 ZHANG Mingzhe chen hao School of Materials Science and Engineering Shenyang Jianzhu University School of Physical Science and Technology Shenyang Normal University

The effects of liquid-solid ratio and reaction time on the leaching rate of magnesium at room temperature were investigated,as well as the effects of the molar ratio of MgO/MgCl2,the amount of water added,and the amount of acid-impregnated slag dosed on the compressive strength and water resistance of *** results showed that the magnesium element in the boron mud could be maximally leached under the conditions of 1:1 concentration of hydrochloric acid at room temperature,liquid-solid ratio of 2.5 mL·g-1,and reaction time of 5 h,and the main products were amorphous SiO2as well as a small amount of magnesium olivine which had not been completely *** LR-MOC prepared using the acid-soaked mixture could reach a softening coefficient of 0.85 for 28 d of water immersion when the molar ratio of MgO/MgCl2was 2.2,the amount of water added was 0 g,and the acid-soaked slag dosing was 40 wt%,which also led to an appreciable late-strength,with an increase of 19.4% in compressive strength at 28 d compared to that at 7 *** previous studies,LR-MOC prepared in this way has a final strength phase that is not the more easily hydrolysed 3-phase but the lath-like *** this phenomenon,we analyzed the mechanism and found that,during the acid leaching process,a part of amorphous SiO2dissolved in the acid leaching solution formed a silica sol,in which Mg2+played a bridging role to make the silica sol more *** the addition and hydrolysis of MgO,the silica sol gel coagulation slows down,providing a capping layer to inhibit the hydrolysis of the 5-phase crystals and providing some strength after *** amorphous SiO2in the other part of the acid-impregnated slag generated M-S-H gel with Mg2+and OH-,which synergised with the dense structure composed of interlocking crystals to improve the water resistance of LR-MOC.

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Molecular mechanism and research progress of traditional Chinese medicine in the treatment of prostate cancer

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Traditional Medicine Research 2025年第1期10卷 62-72页

作者： Hai-Luo Wang Ruo-Ran Zhang hao Wang Peng Xu Jing-Kai Wang Bo chen hao Xu Deng Pan Yu-Yang Ma Kun Pang Department of Urology Xuzhou Central HospitalXuzhou Clinical School of Xuzhou Medical CollegeXuzhou 221009China Graduate School Jiangsu UniversityZhenjiang 212013China Graduate School Bengbu Medical UniversityBengbu 233040China Department of Urology The Peixian People’s HospitalXuzhou 221699China.

Prostate cancer(PCa)is one of the most common malignant tumors in the male genitourinary system,ranking second in incidence *** Chinese medicine(TCM),as an important component of complementary and alternative medicine,shows unique advantages in cancer *** herbal medicine is usually composed of multiple ingredients and involves multiple signaling pathways,which showed function of inducing apoptosis of cancer cells,arresting the cell cycle,inhibiting invasion and metastasis,reducing drug resistance,and regulating immune *** therapy is also an important treatment of ***,Physical therapy such as acupuncture or Tai Chi and Qigong are gaining increased recognition in the management of PCa,particularly in addressing issues like urinary incontinence and bone metastasis-related *** article reviews the TCM treatment and therapy of PCa,in order to provide new research avenues and treatment options for the treatment of PCa with TCM and improve the quality of life of patients.

关键词： traditional Chinese medicine prostate cancer Chinese herbal medicine physical therapy

Comparison of D-flip-flops and D-latches:influence on SET susceptibility of the clock distribution network

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Nuclear Science and Techniques 2019年第2期30卷 91-100页

作者： Pei-Pei hao shu-Ming chen College of Computer National University of Defense Technology

As technology scales down, clock distribution networks(CDNs) in integrated circuits(ICs) are becoming increasingly sensitive to single-event transients(SETs).The SET occurring in the CDN can even lead to failure of the entire circuit system. Understanding the factors that influence the SET sensitivity of the CDN is crucial to achieving radiation hardening of the CDN and realizing the design of highly reliable ICs. In this paper, the influences of different sequential elements(D-flip-flops and D-latches, the two most commonly used sequential elements in modern synchronous digital systems) on the SET susceptibility of the CDN were quantitatively studied. Electrical simulation and heavy ion experiment results reveal that the CDN-SET-induced incorrect latching is much more likely to occur in DFF and DFF-based designs. This can supply guidelines for the design of IC with high reliability.

关键词： Clock distribution network D-flip-flop D-latch Reliability Single-event transient Susceptibility

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等离子体改性聚酰亚胺热老化的分子模拟

原子与分子物理学报 2025年第1期42卷 95-100页

作者：丁璨田浩博陈琛三峡大学电气与新能源学院宜昌443002

通过反应分子动力学方法模拟聚酰亚胺的热老化过程,以模拟仿真等离子体改性后的聚酰亚胺材料在热裂解后的性能变化情况.通过研究老化过程中气体产生的情况,研究发现随着温度升高,分子链之间的相互作用力减弱,导致材料的致密性下降,弹性... 详细信息

通过反应分子动力学方法模拟聚酰亚胺的热老化过程,以模拟仿真等离子体改性后的聚酰亚胺材料在热裂解后的性能变化情况.通过研究老化过程中气体产生的情况,研究发现随着温度升高,分子链之间的相互作用力减弱,导致材料的致密性下降,弹性模量降低,材料抵抗外应力的能力减弱.同时,由于温度升高使得聚酰亚胺材料相对介电常数上升,材料绝缘性能下降,击穿强度也被削弱.

关键词：反应分子动力学聚酰亚胺热老化

基于双CPU架构的Modbus总线仪表开放式采集实验装置设计

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高师理科学刊 2018年第12期38卷 34-38页

作者：李兆许景波李军陈好书哈尔滨理工大学测控技术与通信工程学院黑龙江哈尔滨150080

Modbus总线型仪表在工业领域有着广泛的应用,相应集中数据采集装置是高效获取数据的关键.基于双CPU架构设计了数据采集实验装置,结合双口RAM的应用,开辟了数据交换通道,使两CPU能够协调工作.软件设计上采用结构体设计方法,使软件架构更... 详细信息

Modbus总线型仪表在工业领域有着广泛的应用,相应集中数据采集装置是高效获取数据的关键.基于双CPU架构设计了数据采集实验装置,结合双口RAM的应用,开辟了数据交换通道,使两CPU能够协调工作.软件设计上采用结构体设计方法,使软件架构更为清晰合理.上位机配置软件的设计增强了系统的开放性,为教学和科研提供了有力的辅助工具.

关键词： Modbus协议双口RAM 数据结构体实验装置