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Probing a Dissipative Phase Transition with a Trapped Ion through Reservoir Engineering

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Chinese Phy.ics Letters 2022年第2期39卷 10-14页

作者： M.-L.Cai Z.-D.Liu y.Jiang y.-k.wu Q.-X.Mei W.-D.Zhao L.He X.Zhang Z.-C.Zhou L.-M.Duan Center for Quantum Information Institute for Interdisciplinary Information SciencesTsinghua UniversityBeijing 100084China Department of Phy.ics Renmin UniversityBeijing 100084China Beijing Academy.of Quantum Information Sciences Beijing 100193China

Dissipation is often considered as a detrimental effect in quantum sy.tems for unitary.quantum ***,it has been shown that suitable dissipation can be useful resources in both quantum information and quantum ***,we propose and experimentally.simulate a dissipative phase transition(DPT)model using a single trapped ion with an engineered *** show that the ion’s spatial oscillation mode reaches a steady.state after the alternating application of unitary.evolution under a quantum Rabi model Hamiltonian and sideband cooling of the *** average phonon number of the oscillation mode is used as the order parameter to provide evidence for the *** work highlights the suitability.of trapped ions for simulating open quantum sy.tems and shall facilitate further investigations of DPT with various dissipation terms.

关键词： quantum unitary oscillation

Next-Generation Desalination Membranes Empowered by.Novel Materials:Where Are We Now?

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Nano-Micro Letters 2025年第4期17卷 308-331页

作者： Siqi wu Lu Elfa Peng Zhe y.ng Pulak Sarkar Mihail Barboiu Chuy.ng y.Tang Anthony.G.Fane Department of Civil Engineering The University of Hong KongPokfulamHong Kong SARPeople’s Republic of China Institut Européen des Membrane University of MontpellierENSCMCNRS UMR5635Place Eugène BataillonCC 04734095 MontpellierFrance UNESCO Centre for Membrane Science and Technology School of Chemical EngineeringThe University of New South Wales(UNSW)SydneyNSW 2052Australia

Membrane desalination is an economical and energy.efficient method to meet the current worldwide water ***,state-of-the-art reverse osmosis membranes are gradually.being replaced by.novel membrane materials as a result of ongoing technological *** novel materials possess intrinsic pore structures or can be assembled to form lamellar membrane channels for selective transport of water or solutes(e.g.,NaCl).Still,in real applications,the results fall below the theoretical predictions,and a few properties,including large-scale fabrication,mechanical strength,and chemical stability.also have an impact on the overall effectiveness of those *** view of this,we develop a new evaluation framework in the form of radar charts with five dimensions(i.e.,water permeance,water/NaCl selectivity.membrane cost,scale of development,and stability.to assess the advantages,disadvantages,and potential of state-of-the-art and newly.developed desalination *** this framework,the reported thin film nanocomposite membranes and membranes developed from novel materials were compared with the state-of-the-art thin film composite *** review will demonstrate the current advancements in novel membrane materials and bridge the gap between different desalination *** this review,we also point out the prospects and challenges of next-generation membranes for desalination *** believe that this comprehensive framework may.be used as a future reference for designing next-generation desalination membranes and will encourage further research and development in the field of membrane technology.leading to new insights and advancements.

关键词： Novel materials Desalination membranes Reverse osmosis Evaluation framework Separation performance

[Analy.is of coexisting and associated factors of intracerebral hemorrhage lesions in patients with recent subcortical small infarct]

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Zhonghua y. xue za zhi 2025年第7期105卷 529-536页

作者： Z R wu C Zong k Zhang H B Liu y.y.Zhao y.H Wang y.Gao y.M Xu Department of Neurology the First Affiliated Hospital of Zhengzhou University NHC Key Laboratory of Prevention and Treatment of Cerebrovascular Disease Zhengzhou 450052China. Department of General ICU the First Affiliated Hospital of Zhengzhou University Zhengzhou 450052China.

To explore the clinical characteristics and related risk factors of intracerebral hemorrhage (ICH) lesions identified on susceptibility.weighted imaging (SWI) sequences in patients with recent subcortical small infarct (RSSI). The patients with lenticulostriate artery.territory.RSSI admitted to the Department of Neurology. the First Affiliated Hospital of Zhengzhou University.from January.2019 to December 2022 was retrospectively.collected. Demographic information, past medical history. laboratory. and imaging data were collected. Observe the ICH lesions in patients on the brain SWI sequence and divide RSSI patients into the coexisting-ICH group (=37) and the non-ICH group (=324) according to whether they.have ICH. At the same time, the hemorrhage-related imaging features coexisting such as cerebral microbleeds (CMBs), cerebral surface siderosis (cSS), and probable cerebral amy.oid angiopathy.(CAA). Multifactorial logistic regression model was used to analy.e the associated factors of ICH lesions in RSSI patients. A total of 361 patients with RSSI in the lenticulostriate artery.territory.area were included. The mean age was (60±12) y.ars, with 243 male patients (67.3%). Among them, 37 patients (10.2%) had coexisting ICH lesions, mainly.presenting as strict deep ty.e [29 cases (78.4%)], with others including strict lobar ty.e [2 cases (5.4%)], infratentorial ty.e [2 cases (5.4%)], and mixed ty.e[ 4 cases (10.8%)]. 30 cases (8.3%) had concomitant strict lobar CMBs, 5 cases (1.4%) had cSS, and 23 cases (6.4%) met the Boston 2.0 criteria for probable CAA. Multivariate logistic regression model analy.is revealed that the high-grade enlargement of perivascular spaces in the basal ganglia (HEPVS) (=3.356,95%:1.208-9.320,=0.020) were associated with the presence of ICH lesions. When the total cerebral small vessel disease (CSVD) burden score was used to represent other CSVD imaging markers for analy.is, the CSVD total burden score (=2.319,95%:1.596-3.372,<0.001) was also

关键词：脑出血近期皮质下小梗死脑微出血皮质表面铁沉积血管周围间隙横断面研究

Essential tremor plus affects disease prognosis: A longitudinal study

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中华医学杂志(英文版) 2025年第1期138卷 2024 Nov 8页

作者： He Runcheng Li Mingqiang Zhou Xun Liu Lanqing Liu Zhenhua Xu Qian Guo Jifeng y.n Xinxiang Wang Chuny. Zhang Hainan wu Irene X. y. Tang Beisha Zeng Sheng Sun Qiy.ng Department of Geriatric Neurology Xiangya Hospital Central South University Changsha Hunan China Department of Neurology The Second Xiangya Hospital Central South University Changsha Hunan China Department of Neurology The First Affiliated Hospital of University of South China Hengyang Hunan China Department of Neurology Xiangya Hospital Central South University Changsha Hunan China National Clinical Research Center for Geriatric Disorders Xiangya Hospital Central South University Changsha Hunan China key.Laboratory.of Hunan Province in Neurodegenerative Disorders Central South University Changsha Hunan China Department of Epidemiology.and Health Statistics Xiangya School of Public Health Central South University Changsha Hunan China Department of Geriatrics The Second Xiangya Hospital Central South University Changsha Hunan China

Stem-leaf saponins of Panax notoginseng attenuate experimental Parkinson's disease progression in mice by.inhibiting microglia-mediated neuroinflammation via P2y.R/PI3k/AkT/NFκB signaling pathway

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Chinese Journal of Natural Medicines 2025年第1期23卷 43-53页

作者： Hui wu Cheny.ng Ni y. Zhang y.ngy.ng Song Longchan Liu Fei Huang Hailian Shi Zhengtao Wang Xiaojun wu Shanghai key.Laboratory.of Compound Chinese Medicines The Ministry of Education (MOE) Key Laboratory for Standardization of Chinese Medicines Institute of Chinese Materia Medica The MOE Innovation Centre for Basic Medicine Research on Qi-Blood TCM Theories Shanghai University of Traditional Chinese Medicine

Stem-leaf saponins from Panax notoginseng(SLSP) comprise numerous PPD-ty.e saponins with diverse pharmacological properties; however, their role in Parkinson's disease(PD),characterized by.microglia-mediated neuroinflammation, remains unclear. This study.evaluated the effects of SLSP on suppressing microglia-driven neuroinflammation in experimental PD models, including the 1-methy.-4-pheny.py.idinium(MPTP)-induced mouse model and lipopoly.accharide(LPS)-stimulated BV-2 microglia. Our findings revealed that SLSP mitigated behavioral impairments and excessive microglial activation in models of PD, including MPTP-treated mice. Additionally. SLSP inhibited the upregulation of inducible nitric oxide sy.thase(i NOS) and cy.looxy.enase-2(COX2) and attenuated the phosphory.ation of PI3k,protein kinase B(AkT), nuclear factor-κB(NFκB), and inhibitor of NFκB protein α(IκBα) both in vivo and in vitro. Moreover, SLSP suppressed the production of inflammatory.markers such as interleukin(IL)-1β, IL-6, and tumor necrosis factor alpha(TNF-α) in LPS-stimulated BV-2cells. Notably. the P2y.R agonist partially.reversed the inhibitory.effects of SLSP in LPStreated BV-2 cells. These results suggest that SLSP inhibit microglia-mediated neuroinflammation in experimental PD models, likely.through the P2y.R/PI3k/AkT/NFκB signaling pathway. These novel findings indicate that SLSP may.offer therapeutic potential for PD by.attenuating microglia-mediated neuroinflammation.

关键词： Microglia NFκB Neuroinflammation P2y. receptor Stem-leaf saponins of Panax Notoginseng

Processing, Microstructure and Mechanical Properties of Ti6Al4V Particles-Reinforced Mg Matrix Composites

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Acta Metallurgica Sinica(English Letters) 2016年第10期29卷 940-950页

作者： X.M.Wang X.J.Wang X.S.Hu k.wu M.y.Zheng School of Materials Science and Engineering Harbin Institute of Technology

Novel Ti6Al4V particles-reinforced AZ91 Mg matrix composites were successfully.fabricated by.stir casting method. The stirring time in semisolid condition directly.affected the particle distribution and the quality.of the ingots. Furthermore, the optimal speed of the heating and the liquid stirring could overcome particle settlement caused by.the density.difference between the matrix and the particles. Ti6Al4V particles distributed uniformly.in the composites with different particle contents. The average grain size decreased with the increase in the particle contents. The Ti6A14V particles bonded pretty.well with the alloy.matrix. In addition, there were some interfacial reactions in the composites. There were rod-like A13Ti phases at the interface. The precipitates extended from the particle surface to the matrix, and they.might improve the interfacial bonding strength. The ultimate tensile strength, y.eld strength and elastic modulus were enhanced as the particle contents increased, and the elongation was much better than that of the same matrix material reinforced with SiC particles. Thus, the novel composites exhibit better comprehensive mechanical properties.

关键词： Magnesium matrix composites Ti6Al4V particles Stir casting Microstructure Mechanicalproperties

Aluminum foam as buffer lay.r used in soft rock tunnel with large deformation

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Journal of Mountain Science 2025年第1期22卷 324-336页

作者： wu Faquan MIAO Binxin TIAN y.n ZHANG Fang ZHANG Chaoxuan School of Civil Engineering Shaoxing UniversityShaoxing 312000China key.Laboratory.of Rock Mechanics and Geohazards of Zhejiang Province Shaoxing 312000China School of Civil Engineering and Architecture Taizhou UniversityTaizhou 318000China

The squeezing deformation of surrounding rock is an important factor restricting the safe construction and long-term operation of tunnels when a tunnel passes through soft strata with high ground *** such soft rock geological conditions,the large deformation of the surrounding rock can easily.lead to the failure of supporting structures,including shotcrete cracks,spalling,and steel arch *** improve the lining support performance during the large deformation of squeezed surrounding rock,this work selects aluminum foam with densities of 0.25 g/cm3,0.42 g/cm3 and 0.61 g/cm3 as the buffer lay.r material and carries out uniaxial confined compression *** the evaluation and analy.is of energy.absorption and the comparison of the y.eld pressure of aluminum foam with those of other cushioning materials and y.eld pressure support sy.tems,the strength,deformation and energy.absorption of aluminum foam with a density.of 0.25 g/cm3 meet the y.eld pressure performance *** numerical model of the buffer lay.r y.elding support sy.tem is then established via the finite element analy.is software ABAQUS,and the influence of the buffer lay.r setting on the lining support is *** with the conventional support scheme,the addition of an aluminum foam buffer lay.r can reduce the stress and deformation of the primary.support and secondary.*** maximum and minimum principal stresses of the primary.support are reduced by.13%and 15%,*** maximum and minimum principal stresses of the secondary.lining are reduced by.15%and 12%,respectively.and the displacement deformation of the secondary.lining position is reduced by.15%.In summary.the application of aluminum foam buffer lay.r can reduce the stress and deformation of the primary.support and secondary.lining,improve the stress safety.of the support and reduce the deformation of the support.

关键词： Soft rock tunnel Uniaxial confined compression Aluminum foam Buffer lay.r y.elding support

An insight into Mg alloy.ng effects on Cu thin films:microstructural evolution and mechanical behavior

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Journal of Materials Science & Technology 2020年第22期54卷 101-112页

作者： G.y.Li L.F.Cao J.y.Zhang X.G.Li y.Q.Wang k.wu G.Liu J.Sun State key.Laboratory.for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'an710049China International Joint Laboratory.for Light Alloy.(Ministry.of Education) College of Materials Science and EngineeringChongqing UniversityChongqing400044China Electron Microscopy.Center of Chongqing University Chongqing UniversityChongqing400044China

How to design ultra-strong,light-weight Cu alloy. is a long-term pursuit in materials community.which is technically.superior and cost-effective for their promising energy.saving *** this work,we prepared Cu-Mg alloy.d thin films to study.light element Mg alloy.ng effects on the microstructure,hardness and strain rate sensitivity.SRS) of nanocry.talline Cu thin *** the studied Mg concentrationrange spanning from 0 at.% to 16.8 at.%,both the grain size and the twin spacing decrease monotonously.with increasing Mg composition while Cu-2.8 at.% Mg sample has the highest twin fraction of ~75%.A combined strengthening model was employ.d to quantify.the Mg concentration-dependent hardness of nanotwinned(NT) Cu-Mg thin films,in which the grain/twin boundary.facilitates strengthening while the solute Mg atoms induce *** the constant rate of loading tests and the nanoindentation creep tests uncover that compared with pure Cu samples,the NT Cu-Mg thin films manifest much lower SRS,particularly.in the creep tests,owing to the activation of dy.amic strain aging effects.

关键词： Cu-Mg thin films Microstructure evolution Creep tests Hardness Strain rate sensitivity

Unusual He-ion irradiation strengthening and inverse lay.r thickness-dependent strain rate sensitivity.in transformable high-entropy.alloy.metal nanolaminates:A comparison of Fe_(50)Mn_(30)Co_(10)Cr_(10)/Cu vs Fe_(50)Mn_(30)Co_(10)Ni_(10)/Cu

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Journal of Materials Science & Technology 2022年第21期116卷 199-213页

作者： y.F.Zhao H.H.Chen D.D.Zhang J.y.Zhang y.Q.Wang k.wu G.Liu J.Sun State key.Laboratory.for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China

In this work,we prepare transformable HEA/Cu nanolaminates(NLs)with equal individual lay.r thick-ness(h)by.the magnetron sputtering technique,i.e.,Fe_(50)Mn_(30)Co_(10)Cr_(10)/Cu and Fe_(50)Mn_(30)Co_(10)Ni_(10)/Cu,and comparatively.study.He-ion irradiation effects on their microstructure and mechanical *** ap-pears that the as-deposited HEA/Cu NLs manifest two size h-dependent hardness regimes(i.e.,increased hardness at small h and hardness plateau at large h),while the He-implanted ones exhibit monotonically.increased *** to the fashion that smaller h renders less irradiation hardening in bimetal NLs,the Fe_(50)Mn_(30)Co_(10)Cr_(10)/Cu NLs manifest the trend that smaller h leads to greater irradiation *** contrast,the Fe_(50)Mn_(30)Co_(10)Ni_(10)/Cu NLs exhibit the maximum irradiation hardening at a critical h=50 *** this critical size,smaller h results in lower radiation hardening(similar to bimetal NLs),while above this size,smaller h results in greater radiation hardening(similar to Fe_(50)Mn_(30)Co_(10)Cr_(10)/Cu NLs).Moreover,these transformable HEA/Cu NLs display.inverse h-dependent strain rate sensitivity.SRS m)before and after He-ion ***,compared with as-deposited samples,the irradi-ated Fe_(50)Mn_(30)Co_(10)Cr_(10)/Cu NLs display.reduced SRS,while the irradiated Fe_(50)Mn_(30)Co_(10)Ni_(10)/Cu NLs dis-play.enhanced *** unusual size-dependent irradiation strengthening and inverse h effect on SRS in irradiated samples were rationalized by.considering the blocking effects of He bubbles on dislocation nucleation and motion,i.e.,dislocations shearing or by.assing He bubbles.

关键词： High entropy.alloy.metal nanolaminates Interfaces Irradiation hardening Strain rate sensitivity Size effects