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Edge supercurrent in Josephson junctions based on topological materials

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Science china(Physics,Mechanics & Astronomy) 2025年第2期68卷 1-12页

作者： Junjie Qi chui-Zhen chen Juntao Song Jie Liu Ke he Qing-Feng sun X.c.Xie Beijing Academy of Quantum Information Sciences Beijing 100193China School of Physical Science and Technology Soochow UniversitySuzhou 215006China Institute for Advanced Study Soochow UniversitySuzhou 215006China college of Physics and hebei Advanced Thin Films Laboratory Hebei Normal UniversityShijiazhuang 050024China School of Physics Xi’an Jiaotong UniversityMinistry of Education Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed MatterXi’an 710049China State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China Frontier Science center for Quantum Information Beijing 100084China hefei National Laboratory Hefei 230088China International center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Interdisciplinary center for Theoretical Physics and Information Sciences Fudan UniversityShanghai 200433China

The interplay between novel topological states and superconductivity has garnered substantial interest due to its potential for topological quantum *** Josephson effect serves as a useful probe for edge superconductivity in these hybrid topological *** Josephson junctions based on topological materials,supercurrents exhibit unique quantum interference patterns,including the conventional Fraunhofer oscillations,theΦ_(0)-periodic oscillation,and the 2Φ_(0)-periodic oscillation in response to the external magnetic field(Φ_(0)=h/2e is the flux quantum,h the Planck constant,and e the electron charge).These interference patterns stem from varied Andreev reflection mechanisms and the associated current density *** review seeks to comprehensively examine the theoretical and experimental advancements in understanding the quantum interference patterns of edge supercurrents in Josephson junctions based on quantum spin hall,quantum hall,and quantum anomalous hall systems.

关键词： quantum hall effect quantum spin hall effect quantum anomalous hall effect Josephson junction edge supercurrent Andreev reflection

Engineering nanoparticle structure at synergistic Ru-Na interface for integrated cO_(2)capture and hydrogenation

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Journal of Energy chemistry 2025年第1期100卷 779-791页

作者： hanzi Liu Ling cen Xinlin Xie Lei Liu Zhao sun Zhiqiang sun hunan Engineering Research center of clean and Low-carbon Energy Technology School of Energy Science and EngineeringCentral South UniversityChangsha 410083HunanChina

The development of dual functional material for cyclic cO_(2)capture and hydrogenation is of great significance for converting diluted cO_(2)into valuable fuels,but suffers from kinetic limitation and deactivation of adsorbent and ***,we engineered a series of RuNa/γ-Al_(2)O_(3)materials,varying the size of ruthenium from single atoms to clusters/*** coordination environment and structure sensitivity of ruthenium were quantitatively investigated at atomic *** findings reveal that the reduced Ru nanoparticles,approximately 7.1 nm in diameter with a Ru-Ru coordination number of 5.9,exhibit high methane formation activity and selectivity at 340°*** Ru-Na interfacial sites facilitate cO_(2)migration through a deoxygenation pathway,involving carbonate dissociation,carbonyl formation,and ***-situ experiments and theoretical calculations show that stable carbonyl intermediates on metallic Ru nanoparticles facilitate heterolytic c–O scission and c–h bonding,significantly lowering the energy barrier for activating stored cO_(2).

关键词： cO_(2)capture hydrogenation Ru-Na interface Dual functional material Reaction mechanism

磁化传递MR成像对克罗恩病病人肠纤维化的特性描述

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国际医学放射学杂志 2018年第4期 471-471页

作者： X.h.Li R.Mao S.Y.huang c.h.sun Q.h.cao Z.N.Fang 郑娇凤 Department of Radiology The First Affiliated Hospital of Sun Yat -Sen University

目的以术后组织病理学为"金标准",并与MR增强检查、扩散加权成像(DWI)进行比较,评价MR磁化传递成像(MTI)对克罗恩病(cD)病人肠壁纤维化严重程度的检测价值,并对MTI鉴别cD病人肠壁纤维性狭窄与炎性狭窄的能力进行评价。材料与方法本前瞻... 详细信息

目的以术后组织病理学为"金标准",并与MR增强检查、扩散加权成像(DWI)进行比较,评价MR磁化传递成像(MTI)对克罗恩病(cD)病人肠壁纤维化严重程度的检测价值,并对MTI鉴别cD病人肠壁纤维性狭窄与炎性狭窄的能力进行评价。材料与方法本前瞻性研究获伦理委员会批准并取得病人知情同意。手术前对31例cD病人行MRI检查,包括MTI、增强检查和DWI。测量受累肠壁及同层面腰大肌或臀肌磁化传递率,两者之商为受累肠壁标准化磁化传递率,并计算受累肠壁表观扩散系数(ADc)和强化率。大体标本病变区域与MR病变区域一一匹配,组织学检查明确肠纤维化和炎症严重程度。并对5例新诊病例行MTI检查,验证其有效性。统计学方法包括:单因素方差分析、Spearman等级相关分析和受试者操作特征曲线。结果 cD病人受累肠壁标准化磁化传递率与病理学纤维化评分具有相关性(r=0.769;P=0.000),与炎症评分不具相关性(r=-0.034;P=0.740)。非纤维化肠壁、轻度纤维化肠壁、中度纤维化肠壁和重度纤维化肠壁的标准化磁化传递率两两之间差异有统计学意义(F=59.002;P=0.000)。与仅有炎症反应的肠壁相比,合并有纤维化和炎症的肠壁的标准化磁化传递率明显升高(t=-8.52;P=0.000)。对于肠壁纤维化严重程度(中/重度、轻度、无纤维化)的鉴别,标准化磁化传递率准确度最高,其受试者操作特征曲线下面积(AUc)最大(0.919,P=0.000),其次为ADc(AcU,0.747;P=0.01),强化率准确度最低(AUc,0.592;P=0.209)。在验证实验中,MT成像对中至重度肠纤维化诊断的敏感度、特异度和AUc分别为80%(12/15)、100%(3/3)和0.9(P=0.33)。结论对于伴或不伴有炎症反应的cD病人肠壁纤维化严重程度的检测及鉴别,MTI优于ADc和增强检查。MTI可作为鉴别cD病人肠壁纤维性狭窄或炎性狭窄的一种潜在手段。

关键词：受累肠壁 cD 磁化传递率肠纤维化 MR 克罗恩病

Exhumation and Preservation of the Yangchuling Porphyry W-Mo Deposit in the Jiangnan Tungsten Ore Belt,South china:Insights from(U-Th)/he and Fission Track Dating

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Journal of Earth Science 2025年第1期36卷 46-56页

作者： Yue sun Ying Wang Jianzhang Pang Samuel c.Boone Minting Wu chongjian Shao Wei Liu Jiangxi Provincial Key Laboratory of Genesis and Prospect for Strategic Minerals School of Earth ScienceEast China University of TechnologyNanchang330013China Institute of Geology china Earthquake Administration Beijing100029China School of Geography Earth and Atmospheric Sciences The University of MelbourneMelbourneVIC3010Australia Department of Earth Sciences The University of AdelaideAdelaideSA5005Australia Jiangxi Duchang JinDing Tungsten cO. Ltd.Jiujiang332611China

The Yangchuling porphyry W-Mo deposit(YPWD),located in the Jiangnan porphyryskarn tungsten ore belt,is one of the most important and large-scale porphyry W-Mo deposits in South *** previous zircon U-Pb and molybdenite Re-Os data suggest that Yangchuling WMo ore bodies formed almost simultaneously with granodiorite and monzogranitic porphyry at~150–144 Ma,their post emplacement history remains poorly understood,making their preservation status at depth *** this paper,new zircon and apatite(U-Th)/he and apatite fission track(Zhe,Ahe and AFT,respectively)data of one hornfels and five intrusive rocks from a 1000-meter borehole are ***,together with new inverse thermal history models and previous geochronological data,help elucidate the post-diagenetic exhumation history and preservation status of the Yangchuling porphyry W-Mo *** general,Zhe and Ahe ages decrease gradually from the near surface downwards and have relatively little intra-sample variation,ranging from 133 to 73Ma and 67 to 25 Ma,*** four granodiorites yield similar AFT ages that range from 63 to 55 Ma with mean track lengths varying from 12.2±0.7 to 12.6±0.5μ*** history modelling indicates that the Yangchuling ore district experienced slow,monotonic cooling since the ***-depth relationships are interpreted as recording~3.7±0.8 km of cretaceous-recent exhumation in response to regional extension throughout South china thought to have been driven by subduction retreat of the Paleo-Pacific *** of estimated net exhumation and previous metallogenic depth of~4–5 km suggests that W-Mo ore bodies could still exist at depths of up to~1.3±0.8 km relative to Earth surface in the YPWD *** of the YPWD is attributed to the limited amount of regional denudation during the Late cretaceous and cenozoic.

关键词： (U-Th)/he fission track ore preservation thermochronology Yangchuling porphyry W-Mo deposit

Observer-based event-triggered formation tracking control for second-order multi-agent systems in constrained region

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Science china(Information Sciences) 2025年第2期68卷 151-169页

作者： Fenglan sun Zhonghua XU Wei ZhU ■ KURThS Key Lab of Intelligent Analysis and Decision on complex Systems School of ScienceChongqing University of Posts and Telecommunications Key Lab of Intelligent Air-Ground cooperative control for Universities in chongqing College of AutomationChongqing University of Posts and Telecommunications Department of complexity Science Potsdam Institute for Climate Impact Research Institute of Physics Humboldt University of Berlin

In this paper, an event-triggered time-varying formation tracking control for a class of second-order nonlinear multiagent systems(MAS) operating within a constrained region is investigated. To mitigate the negative effects of external unknown disturbance, a novel disturbance observer with performance guarantees is proposed, enabling precise disturbance *** the artificial potential field(APF) method, a repulsive potential function is introduced to prevent inter-agent collisions as well as collisions with environmental obstacles. To reduce continuous communication and frequent system updates, a sliding mode technique is incorporated into the formation tracking controller, utilizing an event-triggered mechanism. The controller is also applicable to the formation control of MAS in switching-constrained regions. The achievement of the specified timevarying geometric formation is rigorously demonstrated through the Lyapunov framework. Numerical simulations are presented to validate the effectiveness of the theoretical results.

关键词： formation tracking control region constraints repulsive potential function event-triggered mechanism

Joint Feature Encoding and Task Alignment Mechanism for Emotion-cause Pair Extraction

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computers, Materials & continua 2025年第1期82卷 1069-1086页

作者： Shi Li Didi sun college of computer and control Engineering Northeast Forestry UniversityHarbin150040China

With the rapid expansion of social media,analyzing emotions and their causes in texts has gained significant ***-cause pair extraction enables the identification of causal relationships between emotions and their triggers within a text,facilitating a deeper understanding of expressed sentiments and their underlying *** comprehension is crucial for making informed strategic decisions in various business and societal ***,recent research approaches employing multi-task learning frameworks for modeling often face challenges such as the inability to simultaneouslymodel extracted features and their interactions,or inconsistencies in label prediction between emotion-cause pair extraction and independent assistant tasks like emotion and cause *** address these issues,this study proposes an emotion-cause pair extraction methodology that incorporates joint feature encoding and task alignment *** model consists of two primary components:First,joint feature encoding simultaneously generates features for emotion-cause pairs and clauses,enhancing feature interactions between emotion clauses,cause clauses,and emotion-cause ***,the task alignment technique is applied to reduce the labeling distance between emotion-cause pair extraction and the two assistant tasks,capturing deep semantic information interactions among *** proposed method is evaluated on a chinese benchmark corpus using 10-fold cross-validation,assessing key performance metrics such as precision,recall,and F1 *** results demonstrate that the model achieves an F1 score of 76.05%,surpassing the state-of-the-art by 1.03%.The proposed model exhibits significant improvements in emotion-cause pair extraction(EcPE)and cause extraction(cE)compared to existing methods,validating its *** research introduces a novel approach based on joint feature encoding and task alignment mechanisms,contributing to advancements in emotion-c

关键词： Emotion-cause pair extraction interactive information enhancement joint feature encoding label consistency task alignment mechanisms

Dietary supplementation with pterostilbene activates the PI3K‑AKT‑mTOR signalling pathway to alleviate progressive oxidative stress and promote placental nutrient transport

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Journal of Animal Science and Biotechnology 2025年第1期16卷 388-407页

作者： Mingming cao Liyun Bai haoyun Wei Yantong Guo Guodong sun haoyang sun Baoming Shi college of Animal Science and Technology Northeast Agricultural UniversityHarbin 150030PR China

Background Progressive oxidative stress easily occurs as a result of a gradual increase in the intensity of maternal metabolism due to rapid foetal development and increased intensity of ***,studies on the effects of processive oxidative stress on nutrient transport in the placenta have received little *** present study was conducted on sows at 85 days of gestation to study the effects of pterostilbene(PTE)on maternal oxidative stress status and placental nutrient *** PTE increased the antioxidant capacity and immunoglobulin content in mothers’blood and milk,reduced the level of inflammatory factors,and improved the nutrient content of *** also reduced sow backfat loss and the number of weak sons,and increased piglet weaning weight and total weaning litter *** subsequently found that PTE enhanced placental glucose and fatty acid transport and further affected glycolipid metabolism by increasing the expression of LAL,PYGM,and Gbe-1,which activated the PI3K phosphorylation ***,PTE addition altered the relative abundance of the Firmicutes,Proteobacteria,Parabacillus,and Bacteroidetes-like RF16 groups in sow *** increased the levels of acetate,propionate,butyrate and isovalerate in the *** These findings reveal that the addition of PTE during pregnancy and lactation mitigates the effects of processive oxidative stress on offspring development by altering maternal microbial and placental nutrient trans-port capacity.

关键词： Nutrient transporters Placenta Progressive oxidative stress Pterostilbene Sows

A Mn-porphyrinic metal–organic framework immobilizing glucose oxidase for combined photodynamic/chemodynamic/starvation therapy

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Tungsten 2025年第1期7卷 183-194页

作者： Xin-Ran sun hao-Ming Yuan Guo-Da Zhang chao Wang Shu-Juan sun Peng-Fei Shi Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers School of Chemistry and Chemical Engineering Linyi University

The combination of photodynamic therapy（PDT） and chemodynamic therapy（cDT） in tumor treatment has attracted considerable ***,tumor hypoxia and glutathione（GSh） overproduction in the tumor tissue restricted the progress of their ***,a Mn-porphyrinic metal-organic framework（Mn-TcPP） was constructed by the one-pot method and further used for immobilizing glucose oxidase（GOx） to obtain GOx@*** would rapidly exhaust endogenous glucose into hydrogen peroxide（h2O2） and gluconic acid,thus shutting off the energy supply of tumor cells for starvation ***-TcPP catalyzed h2O2to produce oxygen,regulating the hypoxic tumor microenvironment and in turn improving1O2generation under laser ***,Mn-TcPP can reduce reactive oxygen species consumption owing to the redox reaction between Mn3+and GSh,thus greatly enhancing ***,benefiting from GOx-mediated starvation therapy,Mn2+produced by Mn3+reduction can react with sufficient intracellular h2O2to generate ·Oh with high cytotoxicity through a Fenton-like *** treatment by GOx@Mn-TcPP under laser irradiation in vitro,the cell viability of 4T1 and A549 tumor cells reached to 20%,reflecting GOx@Mn-TcPP could give full play to the advantages of PDT/cDT/starvation *** results in vivo demonstrated that GOx@Mn-TcPP mediated synergistic cascade therapy could significantly inhibit tumor growth and improve the therapeutic effect.

关键词： chemodynamic therapy Immobilizing enzyme Metal–organic frameworks Photodynamic therapy Starvation therapy

Study of spatiotemporal variation and annual emission of ch_(4)in Shaoxing Yangtze River Delta,china,Using a portable ch4 detector on the UAV

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Journal of Environmental Sciences 2025年第5期151卷 140-149页

作者： Xiaobing Pang Qianqian Shang Lang chen Songhua sun Gaosheng Zhao Zhentao Wu canming Zhao Youhao Lu Qianqian sun Yan Lyu Baozhen Wang college of Environment Zhejiang University of TechnologyHangzhou 310000China Shaoxing Institute of Zhejiang University of Technology Shaoxing 312000China Shaoxing Ecological and Environmental Monitoring center of Zhejiang Province Shaoxing 312000China School of Environmental and chemical Engineering Shanghai UniversityShanghai 200444China Green Intelligence Environmental School Yangtze Normal UniversityChongqing 408100China

Methane(ch_(4))is the second greenhouse gas and has a profound impact on global climate change due to its high global warming potential and *** 2022,the ch_(4)concentration was approximately 1.9 ppm,which was 264%of the pre-industrial *** spatiotemporal distribution of ch_(4)was investigated by a portable ch_(4)detector on an unmanned aerial vehicle and electric bicycles in Shaoxing,a city situated in the Yangtze River Delta,*** vertical distribution revealed ch_(4)concentration generally decreased slowly with ***,the inversion condition and low atmospheric boundary layer height(ABLh)leaded to the enhancement of ch_(4)with *** highest ch_(4)concentration(2.2±0.1 ppm,n=1428)was observed in winter and the lowest(2.0±0.2 ppm,n=1530)in *** the daily variation,ch_(4)concentration peaked at 5:00 local time(LT)and reached its lowest level at 14:00 LT,which was attributed to the daily variation of ABLh,lowest in the early morning and highest in the *** urban areas,ch_(4)concentrations showed higher levels near restaurants,natural gas stations and sewerage well,with a maximum value of 13.1 ppm,which was caused by ch_(4)emission and natural gas leakage from these *** annual ch_(4)emission in Shaoxing were estimated to be approximately 69 ton/(km^(2)·year)by the mass balance *** with other cities in the world,the ch_(4)emission is in higher level which imply some control measures should be conducted to reduce ch_(4)emission in Shaoxing.

关键词： Portable ch_(4)detector Spatiotemporal variation Annual ch_(4)emission Unmanned aerial vehicle