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Biomedical and Environmental Sciences 2024年第1期37卷 42-53页

作者： JI Xiao Ning LIU Zhao Ping ZHANG Chao Zheng CHEN Min LIANG Jiang LU Jiang ZHANG Lei national resource Center for Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing 100700China China national Center for Food Safety risk Assessment Beijing 100022China Chinese Center for disease Control and Prevention Beijing 102206China

Objective This study aimed to investigate the effect and underlying mechanism of Fructus lycii in improving exercise *** A network pharmacological approach was used to explore potential mechanisms of action of Fructus *** muscle C2C12 cells and immunofluorescence were employed to verify the effect and mechanism of the representative components in Fructus lycii predicted by network pharmacological *** Six potential active components,namely quercetin,β-sitosterol,stigmasterol,7-Omethylluteolin-6-C-beta-glucoside_qt,atropine,and glycitein,were identified to have potency in improving exercise fatigue via multiple pathways,such as the PI3K-Akt,neuroactive ligand-receptor interaction,IL-17,TNF,and MAPK signaling *** immunofluorescence results indicated that quercetin,a significant active component in Fructus lycii,increased the mean staining area of 2-NBdG,TMrM,and MitoTracker,and decreased the area of Cellrox compared to the ***,the protein expression levels of p-38 MAPK,p-MAPK,p-JNK,p-PI3K,and p-AKT markedly increased after quercetin *** Fructus lycii might alleviate exercise fatigue through multiple components and *** these,quercetin appears to improve exercise fatigue by enhancing energy metabolism and reducing oxidative *** PI3K-AKT and MAPK signaling pathways also appear to play a role in this process.

关键词： Fructus lycii Exercise fatigue Network pharmacology

highly active and durable core-shell electrocatalysts for proton exchange membrane fuel cells

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Nano research 2024年第10期17卷 8772-8784页

作者： Hsiwen Wu Fei Xiao Jing Wang Meng Gu Minhua Shao department of Chemical and Biological Engineering The Hong Kong University of Science and TechnologyClear Water BayHong KongChina department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Fok Ying Tung research Institute The Hong Kong University of Science and TechnologyGuangzhou 511458China Energy Institute and Chinese national Engineering research Center for Control&Treatment of Heavy Metal Pollution The Hong Kong University of Science and TechnologyClear Water BayHong KongChina

This work presents simple post-treatment methods to selectively and partially remove the Pd core of Pd-Pt core–shell(Pt@Pd/C)*** proton exchange membrane fuel cell with the post-treated Pt@Pd/C cathode(Pt loading:0.10 mg·cm^(-2))delivers an impressive peak power density of 1.2 W·cm^(-2).The partial removal of Pd core endows an ultrahigh oxygen reduction reaction(Orr)mass activity of 0.32 A·g_(PGM)-1 when normalized to the platinum group metal(PGM)mass,or equivalently 0.55 A·mg_(Pt)^(-1) at 0.9 V measured in a fuel *** post-treatment thickens the Pt shells and mitigates the Pd dissolution during potential *** a result,the post-treated core-shell catalyst demonstrates superior durability in Orr mass activity and polarization power density retention than untreated core-shell catalyst and benchmark Pt/***-situ inductively coupled plasmamass spectrometry(ICP-MS)results highlight that the amount of dissolved Pd in post-treated core–shell catalyst is 17-times lower than that of the untreated *** findings highlight the importance of structural tuning of catalysts in enhancing their mass activity and durability.

关键词： core-shell catalyst platinum monolayer proton exchange membrane fuel cell oxygen reduction reaction durability

Side-Chain-Type Polyimide-Cu Complexes with Suppressed Activation Energy of relaxation for Advanced high-Temperature Capacitor

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Chinese Journal of Polymer Science 2024年第8期42卷 1038-1048页

作者： Bai-Yang Zhou Ze-Tong Ma Shi-Long Zhong Zhen-Jie Huang Qi Guo deng-Chong Feng Zhong-Ke Yuan Shao-Lin Lu Yu-Zhao Yang Cheng Wang ding-Shan Yu Xu-dong Chen Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Guangdong Engineering Technology Research Centre for High Performance Organic and Polymer Photoelectric Functional FilmsSchool of ChemistrySun Yat-sen UniversityGuangzhou 510275China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Laboratory of Chemistry and Fine Chemical Industry Jieyang Centre Jieyang 515200China Chemistry and Chemical Engineering Guangdong Laboratory Shantou 515031China

The burgeoning growth of the new energy vehicles and aviation industry has escalated the need for energy storage capacitors capable of stable operation in harsh *** advent of metal-polyimide complexes has illuminated a novel approach for preparing tem perature-resistant ***,the general application of these metal-polyimide com plexes is impeded by the high dielectric loss and low breakdown strength,consequences of main-chain coordination and excessive metal ions ***,our study proposes a novel polyimideCu complex material(POP-Cu)predicated on side-chain-type pyridine-Cu coordination,utilizing the structural backbone PMdA-OdA of mature commercial PI(Kapton)with reliable *** to the high degree of freedom afforded by the side chain with suppressed relaxation activation energy and the long-range electron delocalization formed by d-πcoordination,the dielectric constant of this material containing merely 2.7 mol%Cu increases from 3.25(POPI)to 5.58,while maintaining a remarkably low dielectric loss of ***,this material exhibits a substantial dC breakdown strength of 436.2 MV·m^(-1)and a high energy density of 5.42 J·cm^(-3),coupled with superior mechanical and thermal *** at 150℃,it retains over 90%of its room-temperature energy density,demon strating notable dielectric stability under high *** attributes underscore its promising application for capacitors operating in harsh environments.

关键词： dielectric performance Polyimide complexes Side-Chain-Type high-temperature capacitor

A 16-bit 18-MSPS flash-assisted SAr AdC with hybrid synchronous and asynchronous control logic

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Journal of Semiconductors 2024年第6期45卷 3-12页

作者： Junyao Ji Xinao Ji Ziyu Zhou Zhichao dai Xuhui Chen Jie Zhang Zheng Jiang Hong Zhang School of Microelectronics Xi'an Jiaotong UniversityXi'an 710049China Qingdao hi-image tech.Co.Ltd. Qingdao 266100China

This paper presents a 16-bit,18-MSPS(million samples per second)flash-assisted successive-approximation-register(SAr)analog-to-digital converter(AdC)utilizing hybrid synchronous and asynchronous(HYSAS)timing control logic based on an on-chip delay-locked loop(dLL).The HYSAS scheme can provide a longer settling time for the capacitive digital-to-analog converter(CdAC)than the synchronous and asynchronous SAr ***,the issue of incomplete settling or ringing in the dAC voltage for cases of either on-chip or off-chip reference voltage can be solved to a large *** addition,the fore-ground calibration of the CdAC’s mismatch is performed with a finite-impulse-response bandpass filter(FIr-BPF)based least-mean-square(LMS)algorithm in an off-chip FPGA(field programmable gate array).Fabricated in 40-nm CMOS process,the proto-type AdC achieves 94.02-dB spurious-free dynamic range(SFdr),and 75.98-dB signal-to-noise-and-distortion ratio(SNdr)for a 2.88-MHz input under 18-MSPS sampling rate.

关键词： SAr AdC control logic reference ringing dAC incomplete settling

A lateral AlGaN/GaN Schottky barrier diode with 0.36-V turn-on voltage and 10-kV breakdown voltage by using double-barrier anode structure

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Chip 2024年第1期3卷 35-42页

作者： ru Xu Peng Chen Xiancheng Liu Jianguo Zhao Tinggang Zhu dunjun Chen Zili Xie Jiandong Ye Xiangqian Xiu Fayu Wan Jianhua Chang rong Zhang Youdou Zheng The Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and EngineeringNanjing UniversityNanjing 210023China School of Electronic and Information Engineering Nanjing University of Information Science and TechnologyNanjing 210044China Corenergy Semiconductor Incorporation Suzhou 215600China

GaN power electronic devices,such as the lateral AlGaN/GaN Schottky barrier diode(SBd),have received significant attention in recent *** studies have focused on optimizing the breakdown voltage(BV)of the device,with a particular emphasis on achieving ultra-high-voltage(UHV,>10 kV)***,another important question arises:can the device maintain a BV of 10 kV while having a low turn-on voltage(V_(on))?In this study,the fabrication of UHV AlGaN/GaN SBds was demonstrated on sapphire with a BV exceeding 10 ***,by utilizing a doublebarrier anode(dBA)structure consisting of platinum(Pt)and tantalum(Ta),a remarkably low Von of 0.36 V was *** achievement highlights the great potential of these devices for UHV applications.

关键词： AlGaN/GaN Schottky barrier diode double-barrier anode Turn-on voltage Ultra-high-voltage

retinal artery/arteriole occlusion risks after endovascular treatment for unruptured intracranial aneurysm

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Stroke & Vascular Neurology 2024年第3期9卷 295-305,I0251-I0263页

作者： Hae rang Kim Min Jeoung Kim Sunyeup Kim Myung Soo Chang dong Joon Kim Byung Moon Kim Keun Young Park Yong Bae Kim Christopher Seungkyu Lee Suk Ho Byeon Sung Soo Kim Seung Won Lee Yong Joon Kim department of Ophthalmology CHA Bundang Medical CenterCHA University College of MedicineSeongnamKorea(the Republic of) department of Neurosurgery Severance Stroke CenterSeverance HospitalYonsei University College of MedicineSeoulKorea(the Republic of) department of Neurosurgery Uijeongbu St.Mary’s HospitalThe Catholic University of Korea College of MedicineUijeongbuKorea(the Republic of) department of Medical AI Sungkyunkwan University School of MedicineSuwonKorea(the Republic of) department of Ophthalmology Institute of Vision ResearchYonsei University College of MedicineSeoulKorea(the Republic of) department of radiology Severance Stroke CenterSeverance HospitalYonsei University College of MedicineSeoulKorea(the Republic of) department of Precision Medicine Sungkyunkwan University School of MedicineSuwonKorea(the Republic of)

Background To evaluate the association between retinal artery/arteriole occlusion(rAO)and unruptured intracranial aneurysm(UIA).Methods Incident UIA patients from a nationwide cohort(n=253240)were categorised into three groups based on subsequent treatment:observation(n=208993),microsurgical clipping(n=14168)and endovascular treatment(EVT)groups(n=30079).The incidence and the incident time of rAO were *** of rAO and associated risk factors were ***,a hospital cohort comprising 2569 consecutive UIA patients treated at a tertiary hospital was analysed with detailed clinical information of *** In the nationwide cohort analysis,the incidence of rAO was significantly higher in EVT group than in observation and clipping groups,especially within 60 days(early rAO(within 60 days):Hr=4.00,95%CI:2.44 to 6.56);delayed rAO(after 60 days:Hr=1.74,95%CI:1.13 to 2.68).Multivariable analysis showed that the presence of chronic kidney disease(p=0.009)and use of a balloon microcatheter during the procedure(p=0.013)were associated with a higher risk of *** hospital cohort analysis,11(0.8%)cases of rAO occurred after EVT,whereas none occurred after microsurgical clipping(prAO were younger and received balloon microcatheters more frequently than their *** cases of rAO(90.9%)occurred in paraclinoid aneurysms,where EVT was preferred over microsurgical *** Performing EVT for UIA may increase the risk of subsequent *** should be taken when treating paraclinoid aneurysms with balloon microcatheters.

关键词： treatment nationwide balloon

Two-dimensional Sb net generated nontrivial topological states in SmAgSb_(2) probed by quantum oscillations

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Chinese Physics B 2024年第7期33卷 51-58页

作者：袁健石贤彪杜红李田郗传英王霞夏威王保田钟瑞丹郭艳峰 School of Physical Science and technology ShanghaiTech UniversityShanghai 201210China Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China Tsung-dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China Xingzhi College Zhejiang Normal UniversityJinhua 321100China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field Laboratory of the Chinese Academy of SciencesHefei 230031China Shanghaitech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China

The rEAgSb_(2)(rE = rare earth and Y) family has drawn considerable research interest because the two-dimensional Sb net in their crystal structures hosts topological fermions and hence rich topological properties. We report herein the magnetization and magnetotransport measurements of SmAgSb_(2) single crystal, which unveil very large magnetoresistance and high carrier mobility up to 6.2 × 10^(3)% and 5.58 × 10^(3)cm^(2)·V^(-1)·s^(-1), respectively. The analysis of both Shubnikov–de Haas and de Haas–van Alphen quantum oscillations indicates nontrivial Berry phases in the paramagnetic state while trivial Berry curvature in the antiferromagnetic state, indicating a topological phase transition induced by the antiferromagnetic order. It is also supported by the first-principles calculations. The results not only provide a new interesting topological material but also offer valuable insights into the correlation between magnetism and nontrivial topological states.

关键词： large magnetoresistance quantum oscillations topological phase transition

Absence of metallicity and bias-dependent resistivity in low-carrier-density EuCd_(2)As_(2)

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 119-125页

作者： Yuxiang Wang Jianwen Ma Jian Yuan Wenbin Wu Yong Zhang Yicheng Mou Jiaming Gu Peihong Cheng Wu Shi Xiang Yuan Jinglei Zhang Yanfeng Guo Cheng Zhang State Key Laboratory of Surface Physics and Institute for Nanoelectronic devices and Quantum Computing Fudan UniversityShanghai 200433China School of Physical Science and technology ShanghaiTech UniversityShanghai 201210China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field Laboratory of the Chinese Academy of SciencesHefei 230031China School of Physics and Electronic Science East China Normal UniversityShanghai 200241China Zhangjiang Fudan International Innovation Center Fudan UniversityShanghai 201210China Shanghaitech Laboratory for Topological Physics Shanghai 201210China

EuCd_(2)As_(2)was theoretically predicted to be a minimal model of Weyl semimetals with a single pair of Weyl points in the ferromagnet ***,the heavily p-doped Eu Cd_(2)As_(2)crystals in previous experiments prevent direct identification of the semimetal ***,we present a comprehensive magneto-transport study of high-quality Eu Cd_(2)As_(2)crystals with ultralow bulk carrier density(10^(13)cm^(-3)).In contrast to the general expectation of a Weyl semimetal phase,Eu Cd_(2)As_(2)shows insulating behavior in both antiferromagnetic and ferromagnetic states as well as surface-dominated conduction from band ***,the application of a dc bias current can dramatically modulate the resistance by over one order of magnitude,and induce a periodic resistance oscillation due to the geometric *** nonlinear transport results from the high nonequilibrium state induced by an electrical field near the band *** results suggest an insulating phase in Eu Cd_(2)As_(2)and put a strong constraint on the underlying mechanism of anomalous transport properties in this system.

关键词： magnetic Weyl semimetal quantum transport Hall effect nonlinear resistivity

In Situ Polymer Gel Electrolyte in Boosting Scalable Fibre Lithium Battery Applications

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Nano-Micro Letters 2024年第11期16卷 170-173页

作者： Jie Luo Qichong Zhang Key Laboratory of Multifunctional Nanomaterials and Smart Systems Chinese Academy of SciencesSuzhou Institute of Nano-Tech and Nano-Bionics398 Ruoshui RoadSuzhou 215123People’s Republic of China

The poor interfacial stability not only deteriorates fibre lithium-ion batteries(FLBs)performance but also impacts their scalable *** efficiently address these challenges,*** Peng team proposed a generalized channel structures strategy with optimized in situ polymerization technology in their recent *** resultant FLBs can be woven into different-sized powering textiles,providing a high energy density output of 128 Wh kg^(-1) and simultaneously demonstrating good durability even under harsh *** a promising strategy expands the horizon in developing FLB with particular polymer gel electrolytes,and significantly ever-deepening understanding of the scaled wearable energy textile system toward a sustainable future.

关键词： high-performance fibre lithium batteries Gel electrolytes Channel structures Stable interface Scalable application

Chipless textile electronics enable wireless digital interactions

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The Innovation 2024年第5期5卷 17-18页

作者： Zhiqing Bai Qichong Zhang Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China

Fibers and fabrics have been closely related to the daily life of humans for *** the advancement of the artificial intelligence of things(AIoT)and wearable technology,functional fibers came into being and underwent revolutionary progress and development.1 Today,fibers have transcended the traditional concept of clothing,being no longer limited to shelter for the body,individual privacy protection,and the aesthetic expression of ourselves but moving in the direction of high-performance,high-end intelligence and green development.2 We are on the verge of an era of all-textile electronics following the first,second,and third *** electronics,a high-tech carrier of future AI,enable interactions between individuals and their surroundings via stimuli sensations,executive feedback,energy harvesting and storage,display,computation,and communication functions,wherever and whenever possible.3 Textile electronics are responsible for integrating human society,the information space,and the physical *** subversive and revolutionary nature promises to promote the integration and development of materials,communications,AI,healthcare,and other forms of multi-disciplinary integration,leading humankind toward a more civilized,intelligent society.

关键词： enable electronics integrating