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Nano Research 2024年第8期17卷 7768-7775页

作者： y.nlong Bai shuai Zhang Nengneng Luo Bingsuo Zou Ruosheng zeng State Key.Laboratory.of Featured Metal Materials and Life-cy.le Safety.for Composite Structures School of Physical Science and TechnologyGuangxi UniversityNanning 530004China

Zero-dimensional metal halides are of unique structures and tunable photoluminescence properties,showing great potential applications such as light-emitting diodes(LEDs)and ***,we successfully.sy.thesized Cu^(+)doped(MA)_(2)ZnCl_(4)metal halides by.a slow evaporation solvent *** introduction of Cu^(+)results in sky.blue self-trapped exciton emission in(MA)_(2)ZnCl_(4) at 486 nm at room temperature,and a photoluminescence quantum y.eld is as high as 54.9%.Interestingly.at low temperatures,Cu^(+)-doped(MA)_(2)ZnCl_(4) exhibits two emission peaks located at 482 and 605 nm,*** temperaturedependent dual emission indicates two excited state structures that exist on the triplet excited-state potential energy.*** addition,the temperature sensor we fitted has good performance(Sr=1.65%·K^(−1)),which is the first attempt in Cu^(+) doped Znbased metal *** work enriches the family.of sky.blue metal halides and provides a promising strategy.for building sky.lue LEDs.

关键词： sky.blue emission self-trapped exciton metal halides excited state structures temperature sensor

Optically.levitated micro gy.oscopes with an MHz rotational vaterite rotor

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Microsy.tems & Nanoengineering 2024年第3期10卷 219-227页

作者： Kai zeng Xiangming Xu y.lie Wu Xuezhong Wu Dingbang Xiao College of Intelligence Science and Technology National University of Defense TechnologyChangsha 410073China College of Information and Communication National University of Defense TechnologyWuhan 430000China Key.Laboratory.of Satellite Navigation Technology National University of Defense TechnologyChangsha 410073China

The field of levitated optomechanics has experienced significant advancements in manipulating the translational and rotational dy.amics of optically.levitated particles and exploring their sensing *** concept of using optically.levitated particles as gy.oscopes to measure angular motion has long been explored but has not y.t been proven either theoretically.or *** this study.we present the first rotor gy.oscope based on optically.levitated high-speed rotating *** gy.oscope is composed of a micrometer-size ellipsoidal vaterite particle that is driven to rotate at MHz frequencies in a vacuum *** an external angular velocity.is input,the optical axis deviates from its initial position,resulting in changes in the frequency.and amplitude of the rotational *** analy.ing these changes,the angular velocity.of the input can be accurately.detected,making it the smallest rotor gy.oscope in the *** angular rate bias instability.of the gy.oscope is measured to be 0.08°/s and can be further improved to as low as 10^(−9)°/h theoretically.by.cooling the motion and increasing the angular moment of the levitated *** work opens a new application paradigm for levitated optomechanical sy.tems and may.pave the way.for the development of quantum rotor gy.oscopes.

关键词： particles rotational angular

Gly.phatic function and its influencing factors in different glucose metabolism states

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World Journal of Diabetes 2024年第7期15卷 1537-1550页

作者： Bin Tian Chen Zhao Jia-Li Liang Hui-Ting Zhang y.-Fan Xu Hui-Lei Zheng Jia Zhou Jiang-Nian Gong shu-Ting Lu Zi-San zeng Department of Radiology The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Magnetic Resonance Research Collaboration Siemens HealthineersGuangzhou 510620Guangdong ProvinceChina Magnetic Resonance Research Collaboration Siemens Healthineers Ltd.Wuhan 430071Hubei ProvinceChina Department of Health Management The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Department of Endocrinology The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina

BACKGROUND Dy.function of the gly.phatic sy.tem in the brain in different stages of altered glucose metabolism and its influencing factors are not well *** To investigate the function of the gly.phatic sy.tem and its clinical correlates in patients with different glucose metabolism states,the present study.employ.d diffusion tensor imaging along the perivascular space(DTI-ALPS)*** Sample size was calculated using the pwr package in R *** crosssectional study.enrolled 22 patients with normal glucose metabolism(NGM),20 patients with prediabetes,and 22 patients with ty.e 2 diabetes mellitus(T2DM).A 3.0T magnetic resonance imaging was used to evaluate the function of the gly.phatic *** mini-mental state examination(MMSE)was used to assess general cognitive *** DTI-ALPS index of bilateral basal ganglia and the mean DTI-ALPS index was ***,the correlation between DTI-ALPS and clinical features was *** The left-side,right-side,and mean DTI-ALPS index in the T2DM group were significantly.lower than that in the NGM *** right-side DTI-ALPS and mean DTI-ALPS index in the T2DM group were significantly.lower than those in the prediabetes ***-ALPS index lateralization was not *** MMSE score in the T2DM group was significantly.lower than that in the NGM and prediabetes *** controlling for sex,the left-side DTI-ALPS and mean DTI-ALPS index in the prediabetes group were positively.correlated with 2-hour postprandial blood glucose level;the left-side DTI-ALPS index was negatively.correlated with total cholesterol and low-density.lipoprotein *** right-side DTI-ALPS and mean DTI-ALPS index were negatively.correlated with the gly.osy.ated hemoglobin level and waist-to-hip ratio in the prediabetes *** left-side,right-side,and mean DTI-ALPS index in the T2DM group were positively.correlated with *** left-side and mean DTIALPS index in the T2DM group were negatively

关键词： Gly.phatic sy.tem Prediabetes Ty.e 2 diabetes mellitus Magnetic resonance imaging Diffusion tensor imaging along the perivascular space

A Local-Global Attention Fusion Framework With Tensor Decomposition for Medical Diagnosis

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1536-1538页

作者： Peishu Wu Han Li Liwei Hu Jirong Ge Niany.n zeng Department of Instrumental and Electrical Engineering Xiamen UniversityFujian 361005China Key.Research Laboratory.of Osteoporosis Sy.drome Genomics Fujian Academy of Chinese Medical SciencesFuzhou 350003China

Dear Editor,In this letter,a novel hierarchical fusion framework is proposed to address the imperfect data property.in complex medical image analy.is(MIA)*** particular,by.combining the strengths of convolutional neural networks(CNNs)and transformers,the enhanced feature extraction,spatial modeling,and sequential context learning are realized to provide comprehensive insights on the complex data *** of information in different level is enabled via a multi-attention fusion mechanism,and the tensor decomposition methods are adopted so that compact and distinctive representation of the underly.ng and high-dimensional medical image features can be accomplished[1].It is shown from the evaluation results that the proposed framework is competitive and superior as compared with some other advanced algorithms,which effectively.handles the imperfect property.of inter-class similarity.and intra-class differences in diseases,and meanwhile,the model complexity.is reduced within an acceptable level,which benefits the deploy.ent in clinic *** has assumed a pivotal role in numerous critical clinical scenarios,where sophisticated image analy.is techniques have proven instrumental in augmenting medical decision-making,facilitating individualized therapeutic interventions,and enhancing patient prognostication[2]−[4].

关键词： handle image property

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A unified pre-training and adaptation framework for combinatorial optimization on graphs

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Science China Mathematics 2024年第6期67卷 1439-1456页

作者： Ruibin zeng Minglong Lei Lingfeng Niu Lan Cheng School of Computer Science and Technology University of Chinese Academy of SciencesBeijing100049China Faculty.of Information Technology Beijing University of TechnologyBeijing100124China School of Economics and Management University of Chinese Academy of SciencesBeijing100190China School of Mathematics and Statistics Central South UniversityChangsha410075China

Combinatorial optimization(CO)on graphs is a classic topic that has been extensively.studied across many.scientific and industrial ***,solving CO problems on graphs through learning methods has attracted great *** deep learning methods,e.g.,graph neural networks(GNNs),have been used to effectively.assist the process of solving ***,current frameworks based on GNNs are mainly.designed for certain CO problems,thereby.failing to consider their transferable and generalizable abilities among different COs on ***,simply.using original graphs to model COs only.captures the direct correlations among objects,which does not consider the mathematical logicality.and properties of *** this paper,we propose a unified pre-training and adaptation framework for COs on graphs with the help of the maximum satisfiability.Max-SAT)*** first use Max-SAT to bridge different COs on graphs since they.can be converted to Max-SAT problems represented by.standard formulas and clauses with logical *** we further design a pre-training and domain adaptation framework to extract the transferable and generalizable features so that different COs can benefit from *** the pre-training stage,Max-SAT instances are generated to initialize the parameters of the *** the fine-tuning stage,instances from CO and Max-SAT problems are used for adaptation so that the transferable ability.can be further *** experiments on several datasets show that features extracted by.our framework exhibit superior transferability.and Max-SAT can boost the ability.to solve COs on graphs.

关键词： combinatorial optimization graph neural networks domain adaptation maximum satisfiability.problem

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Fe-Induced Electronic Transfer and Structural Evolution of Lotus Pod-Like CoNiFePx@P,N-C Heterostructure for Sustainable Oxy.en Evolution

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Energy.& Environmental Materials 2024年第3期7卷 186-193页

作者： Xiaojun zeng Qingqing Zhang Chulong Jin Hui Huang y.nfeng Gao Advanced Ceramic Materials Research Institute School of Materials Science and EngineeringJingdezhen Ceramic University Singapore Institute of Technology School of Materials Science and Engineering Shanghai University

Transition metal phosphides with metallic properties are a promising candidate for electrocataly.ic water oxidation,and developing highly.active and stable metal phosphide-based oxy.en evolution reaction cataly.ts is still ***,we present a facile ion exchange and phosphating processes to transform intestine-like CoNiPx@P,N-C into lotus pod-like CoNiFePx@P,N-C heterostructure in which numerous P,N-codoped carboncoated CoNiFePxnanoparticles tightly.anchors on the 2D carbon ***,the as-prepared CoNiFePx@P,N-C enables a core-shell structure,high specific surface area,and hierarchical pore structure,which present abundant heterointerfaces and fully.exposed active ***,the incorporation of Fe can also induce electron transfer in CoNiPx@P,IM-C,thereby.promoting the oxy.en evolution ***,CoNiFePx@P,IM-C delivers a low overpotential of 278 mV （vs RHE） at a current density.of10 mA cm-1and inherits excellent long-term stability.with no observable current density.decay.after 30 h of chronoamperometry.*** work not only.highlights heteroatom induction to tune the electronic structure but also provides a facile approach for developing advanced and stable oxy.en evolution reaction electrocataly.ts with abundant heterointerfaces.

关键词： electronic transfer Fe exchange multi-metal phosphides OER electrocataly.ts structural evolution

A new ty.e of lipophilic hy.rophobic self-repairing cellulose insulating paper developed with ST-110/FAS/PTFE ternary.sy.tem as coating substrate

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High Voltage 2024年第2期9卷 474-483页

作者： Zhenglin zeng Jinshan Qin Zuhao Wang Weimin Tan Chao Tang College of Engineering and Technology Southwest UniversityChongqingChina International R&D Center for New Technologies of Smart Grid and Equipment ChongqingChina

The moisture generated by.the ageing of the oil-paper insulating sy.tem can easily.lead to the deterioration of the performance of the insulating *** order to alleviate the impact of moisture on the performance of the insulating paper,we developed a kind of lipophilic hy.rophobic self-repairing cellulose insulating paper(new insulating paper)based on the ternary.sy.tem of poly.etrafluoroethy.ene,fluorocarbon surfactant and fluorinated alky. silane,and accelerated thermal ageing test for 45 day. at 130°C was carried *** experimental results show that the new insulating paper with excellent lipophilic property.can realise hy.rophobic self-repairing through heat treatment after phy.ical *** tensile strength and elongation at break of the new insulating paper increased by.5%–8%and 6.25%–27%respectively.compared with the original cellulose insulating *** the end of ageing,the relative dielectric constant and dielectric loss factor of new insulating paper are 10.4%and 9.9%lower than that of the original cel-lulose insulating paper,while the breakdown voltage is 6.8%*** acid and moisture content produced during the ageing process of the insulating oil impregnated with new insulating paper are also less,indicating that the coating can delay.the ageing of the insulating paper.

关键词： coating moisture cellulose

Impact wear properties of dissimilar joints between bainitic frogs and pearlite rails

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Journal of Iron and Steel Research International 2024年第1期31卷 275-287页

作者： Pin-y.ng zeng Chun-guang Zuo Xiao-y. Zhang Wei Li Tribology.Research Institute Southwest Jiaotong UniversityChengdu610031SichuanChina

The impact wear behavior and damage mechanism of dissimilar welded joints between U26Mn frog and U75 V rail before and after normalizing treatment were studied by.cy.lic impact *** experiment indicated that the impact wear volume of the joints increased with the increasing number of impact *** main wear mechanisms include pitting wear,mild fatigue wear,delamination wear,and fatigue wear,and plastic deformation was the primary.impact wear *** them,fatigue wear had the greatest influence on wear volume,while other wear mechanisms had limited *** impact wear resistance of the base material was better than that of the heat-affected *** treatment was beneficial to improving the impact wear resistance of welded joints owing to its effect to promote pearlite recovery.grain refinement,and uniform distribution of *** martensite generated in the rail welded joints aggravated the impact wear damage to the materials,which should be avoided.

关键词： Dissimilar welded joint Impact wear Bainitic steel Damage mechanism Wear rate

Cr-cataly.ed ally.ic C(sp^(3))–H addition to aldehy.es enabled by.photoinduced ligand-to-metal charge transfer

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Science China Chemistry 2024年第5期67卷 1589-1595页

作者： Xianrong zeng Feng-Hua Zhang Runchen Lai Xiaoy. Lin Zhaobin Wang Key.Laboratory.of Precise Sy.thesis of Functional Molecules of Zhejiang Province Department of ChemistrySchool of Science and Research Center for Industries of the FutureWestlake UniversityHangzhou 310030China Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhou 310024China Key.Laboratory.of Precise Sy.thesis of Functional Molecules of Zhejiang Province Instrumentation and Service Center for Molecular SciencesWestlake UniversityHangzhou 310024China

Photoinduced ligand-to-metal charge transfer(LMCT) has emerged as an effective strategy.for sy.thesizing organic molecules in a sustainable manner. However, the majority.of existing reports on selective C(sp^(3))–H bond functionalization via photoinduced LMCT focus on the use of late transition metals or rare-earth metals for radical additions or cross-couplings. In contrast, the utilization of photoinduced LMCT with 3d early.transition metals poses a significant challenge. Herein, we describe an unprecedented approach to ally.ic C(sp^(3))–H addition to aldehy.es, employ.ng chromium(Cr) complexes as cataly.ts through visible-light-induced LMCT. By.investigating the reaction pathway.through various mechanistic studies, including radical trapping, kinetic isotope effect(KIE) analy.is, and transient absorption spectroscopy. valuable insights have been gained. The proposed mechanism suggests the intermediacy.of bromine radicals through homoly.is of the Cr–Br bond. Notably. this protocol expands our understanding of the photochemical properties of earth-abundant Cr complexes.

关键词： Cr cataly.is photoinduced ligand-to-metal charge transfer hy.rogen-atom transfer carbony. addition

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Comparative efficacy.and safety.between endoscopic submucosal dissection,surgery.and definitive chemoradiotherapy.in patients with cT1N0M0 esophageal cancer

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World Journal of Gastrointestinal Endoscopy 2024年第2期16卷 72-82页

作者： shu-Ai Luo y.-y.ng Sun y.-Ting zeng Chun-y. Huang State Key.Laboratory.of Oncology.in South China Sun Yat-sen University Cancer CenterGuangzhou 510060Guangdong ProvinceChina

BACKGROUND Endoscopic submucosal dissection(ESD)and surgical resection are the standard of care for cT1N0M0 esophageal cancer(EC),whereas definitive chemoradiotherapy.d-CRT)is a treatment ***,the comparative efficiency.and safety.of ESD,surgery.and d-CRT for cT1N0M0 EC remain *** To compare the efficiency.and safety.of ESD,surgery.and d-CRT for cT1N0M0 *** We retrospectively.analy.ed the hospitalized data of a total of 472 consecutive patients with cT1N0M0 EC treated at Sun y.t-sen University.Cancer center between 2017-2019 and followed up until October 30th,*** analy.ed demographic,medical recorded,histopathologic characteristics,imaging and endoscopic,and follow-up *** Kaplan-Meier method and Cox proportional hazards modeling were used to analy.e the difference of survival outcome by.*** probability.of treatment weighting(IPTW)was used to minimize potential confounding *** We retrospectively.analy.ed patients who underwent ESD(n=99)or surgery.n=220)or d-CRT(n=16)at the Sun y.t-sen University.Cancer Center from 2017 to *** median follow-up time for the ESD group,the surgery.group,and the d-CRT group was 42.0 mo(95%CI:35.0-60.2),45.0 mo(95%CI:34.0-61.75)and 32.5 mo(95%CI:28.3-40.0),*** adjusting for background factors using IPTW,the highest 3-y.ar overall survival(OS)rate and 3-y.ar recurrence-free survival(RFS)rate were observed in the ESD group(3-y.ar OS:99.7% and 94.7% and 79.1%;and 3-y.ar RFS:98.3%,87.4% and 79.1%,in the ESD,surgical,and d-CRT groups,respectively..There was no difference of severe complications occurring between the three groups(P≥0.05).Multivariate analy.is showed that treatment method,histology.and depth of infiltration were independently.associated with OS and *** For cT1N0M0 EC,ESD had better long-term survival and lower hospitalization costs than those who underwent d-CRT and surgery.with a similar rate of severe complications occurring.

关键词： Retrospective study cT1N0M0 Esophageal squamous cell carcinoma Endoscopic submucosal dissection Surgery Definitive chemoradiotherapy