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计算机仿真 2024年第5期41卷 512-517页

作者：刘彦甲刘新宇商丘工学院信息与电子工程学院河南商丘476000 华北水利水电大学河南郑州450045

传统资源分配算法无法解决区间同频电磁干扰问题,会显著降低资源分配效率低、减少系统边缘吞吐量。为解决上述问题,将最小化功率MP技术与动态优先级DP方法有机融合,提出了一种MDP动态频谱资源分配算法。算法首先通过对区内边缘用户进行... 详细信息

传统资源分配算法无法解决区间同频电磁干扰问题,会显著降低资源分配效率低、减少系统边缘吞吐量。为解决上述问题,将最小化功率MP技术与动态优先级DP方法有机融合,提出了一种MDP动态频谱资源分配算法。算法首先通过对区内边缘用户进行判断,确定同频干扰源;然后在用户信道增益表的基础上,采用增益高低法对子载波进行资源分配,解决同频电磁干扰影响;最后采用MP技术优化区内资源分配体系,并利用DP方法划分动态区间载波,提升资源分配的高效性。与传统RR与PF基线分配算法相比,MDP算法在仿真时,当用户数少于50时,用户的满意度与算法公平性最高;且系统频谱效率分别平均提高了43.61%与30.73%;此外边缘吞吐量平均提高了7.89%,系统吞吐量平均提升6.37%。综上所述,MDP动态频谱资源分配算法能够解决区间同频电磁干扰问题,提高系统吞吐量,在通信领域中具有重要的研究价值。

关键词：同频干扰分配算法通信技术

zincophilic Ti_(3)C_(2)Cl_(2)MXene and anti-corrosive Cu NPs for synergistically regulated deposition of dendrite-free Zn metal anode

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Journal of Materials Science & Technology 2024年第2期169卷 137-147页

作者： Yunfei Shen Yi liu Kaisheng Sun Tiantian Gu Gang Wang Yue Yang Jianxiang Pang Yang Zheng Xiaodong Yang Long Chen Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832003China Institute for Chemistry Chemnitz University of TechnologyChemnitz 09107Germany CAS Key Laboratory of Functional Materials and Devices for Special Environments Xinjiang Key Laboratory of Electronic Information Materials and DevicesCenter of Materials Science and Optoelectronics EngineeringXinjiang Technical Institute of Physics and Chemistry of CASUrumqi 830011China Key Laboratory of Ecophysics and Department of Physics College of ScienceShihezi UniversityShihezi 832003China

Dendrites growth,chemical corrosion,and hydrogen evolution reaction(HER)on zinc anodes are the main barriers for the development of aqueous zinc-ion batteries(AZIBs).Constructing interfacial protec-tive layer is an effective way to alleviate the side reactions on the ***,Cu/Ti_(3)C_(2)Cl_(2)MXene(CMX)with high zincophilic and hydrophobic property is prepared by the lewis molten salts etching method,and the CMX interface protection layer is constructed by a simple spin *** CMX coat-ing layer can provide abundant nucleation sites and uniformize the charge distribution through the zin-cophilic Ti_(3)C_(2)Cl_(2)MXene matrix,leading to homogenous Zn *** addition,the hydrophobic coat-ing contained anti-corrosive Cu nanoparticles can prevent the Zn anode from the electrolyte,beneficial for suppressing the chemical corrosion and ***,the stable and reversible Zn plating/stripping is achieved for the Zn anode coated by the CMX,which exhibits the lifespan of over 1400 h at 0.5 mA cm^(−2),and even can steadily run for 700 h with 65 mV at 10 mA cm^(−2).Furthermore,CMX@Zn shows a high coulombic efficiency of over 100%for 3800 cycles,which indicates that the CMX@Zn electrode has excellent stability and reversibility of Zn stripping/*** full batteries assembled with ZnCoMnO/C(ZCM)cathodes also exhibits higher capacity(450.6 mAh g^(−1)at 0.1 A g^(−1))and cycle stability(capacity retention of 70%after 1500 cycles).This work enhanced the lifespan of AZIBs and broaden the research of multifunctional coating layer to other secondary batteries based on metal anodes.

关键词： zinc anode Spin coating zincophilic MXene Anti-corrosive Cu NPs Multifunctional coating

Sediment control function of river notches

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Journal of Mountain Science 2018年第3期15卷 485-494页

作者： Chia-hsing LIN Cheng-Ju liu Shih-Hsun LIN Chjeng-Lun SHIEH Department of Hydraulic and Ocean Engineering National Cheng Kung University

The purpose of this study is to investigate the control function and mechanisms of natural river notches. Physical and numerical experiments are analyzed in this study for two representative types of sediment events： high intensity and short duration Type A sediment disaster events, and low intensity and long duration Type B moderate non-disaster events. Two dimensionless parameters, sediment trapping rate and reduction rate of peak sediment transport, are defined to evaluate the sediment control function of river notches. Study results indicate that the contraction ratio of the notch has a significant influence on sediment control function, with high contraction ratios resulting in both high sediment-trapping and high reduction rates. River notches provide better sediment control during Type A events than Type B events. The sediment control mechanism of river notches is the result of multiple interactions among river flow, sediment transport, and riverbed variation. Analysis of these interactions supports the significant protection role of river notches on sediment control for disaster events.

关键词： River notch Sediment control function Sediment control mechanism Sediment trapping rate Reduction rate of peak sediment transport

Tumor microenvironment-responsive hyaluronate-calcium carbonate hybrid nanoparticle enables effective chemo-therapy for primary and advanced osteosarcomas

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Nano Research 2018年第9期11卷 4806-4822页

作者： Yi Zhang Lulu Cai Di Li Yeh-hsing Lao Dingzhuo liu Mingqiang Li Jianxun Ding Xuesi Chen Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China Department of Orthopedics the Fourth Affiliated Hospital of China Medical University Shenyang 110032 China Personalized Drug Therapy Key Laboratory of Sichuan Province Hospital of the University of Electronic Science and Technology of China Sichuan Provincial People's Hospital Chengdu 610072 China Department of Biomedical Engineering Columbia University New York NY 10027 USA Guangdong Provincial Key Laboratory of Liver Disease The Third Affiliated Hospital of Sun Yat-sen University Guangzhou 510630 China

Osteosarcoma is the most common malignancy in the bone. Current chemotherapy offers limited efficacy with significant side effects, especially for advanced and relapsed osteosarcomas. Nanoparticle-formulated chemotherapeutic drugs may be used to resolve these issues, but several aspects of these formulations remain unsatisfactory, such as how to improve their stability in the bloodstream, prevent undesirable drug leakage, and enhance targeted drug accumulation in the tumor. In this study, a tumor microenvironment-responsive calcium carbonate （CaCO3）- crosslinked hyaluronate （HA） nanopartide was prepared via a ＂green＂ process to effectively deliver doxorubicin （DOX） for the treatment of various stages of osteosarcoma. The DOX-loaded hyaluronate-calcium carbonate hybrid nanoparfide （HA-DOX/CaCO3） demonstrated superior stability both in vitro and in vivo, and rapidly released DOX at the tumor site when triggered by the acidic tumor microenvironment. Compared with free DOX and a non-crosslinked nanoparficle （HA-DOX）, HA-DOX]CaCO3 exhibited the most potent inhibition efficacy toward both primary and advanced models of routine osteosarcoma, resulting in effective tumor inhibition, improved survival time, and reduced adverse effects. Most importantly, in the advanced osteosarcoma model, HA-DOX/CaCO3 potently suppressed tumor growth by 84.6%, which indicates the potential of this platform for osteosarcoma treatment, particularly for advanced and relapsed cases. The proposed polysaccharide nanopartide would be a promising drug delivery platform to advance osteosarcoma nanomedicine.

关键词： hybrid nanomedicine tumor-aridity responsiveness controlled drug delivery multi-stage osteosarcoma chemotherapy

Synergistic Optimization of Buried Interface by Multifunctional Organic-Inorganic Complexes for Highly Efficient Planar Perovskite Solar Cells

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Nano-Micro Letters 2023年第9期15卷 505-519页

作者： Heng liu Zhengyu Lu Weihai Zhang Hongkang Zhou Yu Xia Yueqing Shi Junwei Wang Rui Chen Haiping Xia hsing-Lin Wang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongPeople’s Republic of China Shenzhen Grubbs Institute and Department of Chemistry Southern University of Science and TechnologyShenzhen 518055GuangdongPeople’s Republic of China Department of Electrical and Electronic Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongPeople’s Republic of China Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong Southern University of Science and TechnologyShenzhen 518055GuangdongPeople’s Republic of China

For the further improvement of the power conversion efficiency(PCE)and stability of perovskite solar cells(PSCs),the buried interface between the perovskite and the electron transport layer is ***,it is challenging to effectively optimize this interface as it is buried beneath the perovskite ***,we have designed and synthesized a series of multifunctional organic-inorganic(OI)complexes as buried interfacial material to promote electron extraction,as well as the crystal growth of the *** OI complex with BF4−group not only eliminates oxygen vacancies on the SnO_(2) surface but also balances energy level alignment between SnO_(2) and perovskite,providing a favorable environment for charge carrier ***,OI complex with amine(−NH_(2))functional group can regulate the crystallization of the perovskite film via interaction with PbI2,resulting in highly crystallized perovskite film with large grains and low defect ***,with rational molecular design,the PSCs with optimal OI complex buried interface layer which contains both BF4−and−NH_(2) functional groups yield a champion device efficiency of 23.69%.More importantly,the resulting unencapsulated device performs excellent ambient stability,maintaining over 90%of its initial efficiency after 2000 h storage,and excellent light stability of 91.5%remaining PCE in the maximum power point tracking measurement(under continuous 100 mW cm−2 light illumination in N2 atmosphere)after 500 h.

关键词： Perovskite solar cells Organic Inorganic complexes Multifunctional interfacial material Buried interface layer

基于光纤布拉格光栅和压电转换器的电功率传感器(英文)

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光学精密工程 2011年第9期19卷 2255-2262页

作者： CHENG Chin-hsing CHANG Min-chih liu Wen-fung Department of Electrical Engineering Feng Chia University

针对传统功率计测量电功率存在线圈电感、电容与金属部分的涡流感应等限制,本文基于布拉格光纤光栅与压电转换器设计了电功率传感器来测量实功率与虚功率。将布拉格光纤光栅粘贴于压电转换器上,构建了动态应变模拟装置。负载电压与负载... 详细信息

针对传统功率计测量电功率存在线圈电感、电容与金属部分的涡流感应等限制,本文基于布拉格光纤光栅与压电转换器设计了电功率传感器来测量实功率与虚功率。将布拉格光纤光栅粘贴于压电转换器上,构建了动态应变模拟装置。负载电压与负载电流的乘积形成的等效电压施加在压电转换器上使布拉格光纤光栅动态变化,由此测量光栅动态变化所造成的波长改变量即可得到等效负载功率。相位检测电路用于测量负载电压与负载电流的相位差,由该相位差即可求得功率因数。所研究的传感器可以取代传统功率计用于实功率和虚功率的测量。

关键词：电功率传感器实功率虚功率光纤布拉格光栅压电转换器

Molybdenum-doped ordered L1_(0)-PdZn nanosheets for enhanced oxygen reduction electrocatalysis

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SusMat 2022年第3期2卷 347-356页

作者： Jiashun Liang Yu Xia Xuan liu Fanyang Huang Jinjia liu Shenzhou Li Tanyuan Wang Shuhong Jiao Ruiguo Cao Jiantao Han hsing-Lin Wang Qing Li State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhanChina Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenChina School of Physics and Astronomy University of BirminghamBirminghamUK Key Laboratory of Materials for Energy Conversion Chinese Academy of Science(CAS) Department of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefeiChina Institute of Coal Chemistry Chinese Academy of SciencesTaiyuanChina National Energy Center for Coal to Clean Fuels Synfuels China Co.LtdBeijingChina

Ultrathin Pd-based two-dimensional(2D)nanosheets(NSs)with tunable physicochemical properties have emerged as promising candidate for oxygen reduction reaction(ORR).Unfortunately,structurally ordered Pd-based NSs can be hardly prepared as high temperature annealing(>600℃)is necessary for disorder to order phase transition,making it a considerable challenge for morphology ***,a new class of ultrathin structurally ordered Mo-doped L1_(0)-PdZn NSs with curved geometry and abundant defects/lattice distortions is reported as an efficient oxygen reduction electrocatalyst in alkaline *** is found that Mo(CO)_(6) serves as reducing agent and Mo source to generate the unique ordered 2D morphology,which leads to the significantly modified electronic *** developed L1_(0)-Mo-PdZn NSs exhibit excellent ORR mass activity of 2.6 A mg_(Pd)^(−1) at 0.9 V versus reversible hydrogen electrode,31.5 and 17.6 times higher than those of Pd/C and Pt/C,respectively,outperforming most of the reported Pdbased ORR ***,L1_(0)-Mo-PdZn NSs is extremely stable for ORR,with only 2.3% activity loss after 10000 potential *** functional theory study suggests that ordered L1_(0) structure and Mo doping can raise the vacancy formation energy of Pd atom and thus promote the ORR stability.

关键词： electrocatalysis fuel cell nanosheeets oxygen reduction Pd-based intermetallics

Intravital imaging of adriamycin-induced renal pathology using two-photon microscopy and optical coherence tomography

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Journal of Innovative Optical Health Sciences 2018年第5期11卷 59-68页

作者： Hengchang Guo hsing-Wen Wang Qinggong Tang Erik Anderson Reuben Falola Tikina Smith Yi liu Moshe Levi Peter M.Andrews Yu Chen Fischell Department of Bioengineering University of Maryland College Park MD 20742USA Department of Biochemistry and Molecular&Cellular Biology Georgetown University Medical Center Washington DC 20007 USA Central Animal Resources Facility University of Maryland College ParkMD 20742USA

Adriamycin(doxorubicin),a common cancer chemotherapeutic drug,can be used to induce a model of chronic progressive glomerular disease in *** our studies,we evahuated renal changes in a rat model after Adriamydin injection using two photon microscopy(TPM),optical coherence tomography(OCT)and Doppler OCT(DOCT).Taking advantage of deep penetra-tion and fast scanning speed for three dimensional(3D)label-free imaging,OCT/DOCT system was able to reveal glomerular and tubular pathology noninvasively and in real *** imaging renal pathology following the infusion of fAuorophore-labeled dextrans of different molecular weights,TPM can provide direct views of glomerular and tubular flow dynamics with the onset and progression of renal ***,glomerular permeability and filtration,proximal and distal tubular flow dynamics can be revealed.6-8 weeks after injection of Adriamycin,TPM and OCT/DOCT imaging revealed glomerular sclerosis,compromised flow across the glomerular wall,tubular atrophy,tubular dilation,and variable intra-tubular flow *** results indicate that TPM and OCT/DOCT provide real-time imaging of renal pathology in vivo that has not been previously available using conventional microscopic procedures.

关键词： Chronic kidney disease(CKD) glomeruloscerosis Optical Coherence Tomography(OCT) Tubular Atrophy Two-photon Microscopy(TPM)

Advances in lithium niobate photonics:development status and perspectives

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Advanced Photonics 2022年第3期4卷 40-82页

作者： Guanyu Chen Nanxi Li Jun Da Ng Hong-Lin Lin Yanyan Zhou Yuan hsing Fu Lennon Yao Ting Lee Yu Yu Ai-Qun liu Aaron J.Danner National University of Singapore Department of Electrical and Computer EngineeringSingapore A*STAR(Agency for Science Technology and Research)Institute of MicroelectronicsSingapore Huazhong University of Science and Technology School of Optical and Electronic InformationWuhan National Laboratory for OptoelectronicsWuhanChina Nanyang Technological University Quantum Science and Engineering CentreSingapore

Lithium niobate(LN)has experienced significant developments during past decades due to its versatile properties,especially its large electro-optic(EO)*** example,bulk LN-based modulators with high speeds and a superior linearity are widely used in typical fiber-optic communication ***,with everincreasing demands for signal transmission capacity,the high power and large size of bulk LN-based devices pose great challenges,especially when one of its counterparts,integrated silicon photonics,has experienced dramatic developments in recent *** long ago,high-quality thin-film LN on insulator(LNOI)became commercially available,which has paved the way for integrated LN photonics and opened a hot research area of LN photonics *** allows a large refractive index contrast,thus light can be confined within a more compact *** with other properties of LN,such as nonlinear/acousto-optic/pyroelectric effects,various kinds of high-performance integrated LN devices can be demonstrated.A comprehensive summary of advances in LN photonics is *** LN photonics has experienced several decades of development,our review includes some of the typical bulk LN devices as well as recently developed thin film LN *** this way,readers may be inspired by a complete picture of the evolution of this *** first introduce the basic material properties of LN and several key processing technologies for fabricating photonics *** that,various kinds of functional devices based on different effects are ***,we give a short summary and perspective of LN *** hope this review can give readers more insight into recent advances in LN photonics and contribute to the further development of LN related research.

关键词： lithium niobate etching photonics integrated optics nanotechnology devices.