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Deciphering the roles of bacterial and fungal communities in the formation and quality of agarwood

Stress Biology 2024年第1期4卷 187-204页

作者： Chen-Chen Fu Bao-Xing Huang Shan-Shan Wang Yu-Chen Song Dolkar Metok Yu-Xiang Tan Tai-Ping Fan Alisdair RFernie Meisam Zargar Yan Wang Mo-Xian Chen Liang-Wen Yu Fu-Yuan Zhu State Key Laboratory of Tree Genetics and Breeding the Southern Modern Forestry Collaborative Innovation CenterKey Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity ConservationCollege of Life SciencesNanjing Forestry UniversityNanjing 210037China Clinical Laboratory Shenzhen Children’s HospitalShenzhen 518000China Dongguan Institute of Guangzhou University of Chinese Medicine Dongguan Institute of Guangzhou University of Chinese MedicineDongguan 523808China Guangdong Province Key Laboratory for Biotechnology Drug Candidates Institute of Basic Medical Sciences and Department of BiotechnologySchool of Life Sciences and BiopharmaceuticsGuangdong Pharmaceutical UniversityGuangzhou 510006China CAS Key Laboratory of Quantitative Engineering Biology Shenzhen Institute of Synthetic BiologyShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Department of Pharmacology University of CambridgeCambridgeUK School of Health Sciences Fuyao University of Science&TechnologyFuzhou 350000China Max Planck Institute of Molecular Plant Physiology Am Muhlenberg 114476 Potsdam-GolmGermany Department of Agrobiotechnology Institute of AgricultureRUDN University117198 MoscowRussia Science and Technology Innovation Center Guangzhou University of Chinese MedicineGuangzhouGuangdong 510405China State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China.

Aquilaria sinensis is a significant resin-producing plant worldwide that is crucial for agarwood *** has different qualities depending on the method with which it is formed,and the microbial community structures that are present during these methods are also ***,the microbial communities of plants play crucial roles in determining their health and *** previous studies have investigated the impact of microorganisms on agarwood formation,they lack comprehensiveness,particularly regarding the properties of the microbial community throughout the entire process from seedling to adult to incense *** collected roots,stems,leaves,flowers,fruits and other tissues from seedlings,healthy plants and agarwood-producing plants to address this gap and assess the dominant bacterial species in the microbial community structures of *** at different growth stages and their impacts on growth and agarwood *** bacteria and fungi in these tissues were classified and counted from different *** samples were sequenced using the Illumina sequencing platform,and sequence analyses and species annotations were performed using a range of bioinformatics tools to assess the plant community *** additional comparison of the samples was conducted using diversity analyses to assess their *** research revealed that Listeria,Kurtzmanomyces,Ascotaiwania,Acinetobacter,Sphingobium,Fonsecaea,Acrocalymma,Allorhizobium,Bacillus,Pseudomonas,Peethambara,and Debaryomyces are potentially associated with the formation of ***,the data provided in this article help us understand the important roles played by bacteria and fungi in the growth and agarwood formation process of ***,will support the theoretical basis for the large-scale cultivation of ***,and provide a basis for further research on microbial community applications in agarwood production and beyond.

关键词： Aquilaria sinensis Endophytic Exophytic Fungi Bacteria Plant tissue

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STABILITY ANALYSIS of GRID-CONNECTED CONVERTERS in LOW-VOLTAGE DISTRIBUTION NETWORK 10

STABILITY ANALYSIS of GRID-CONNECTED CONVERTERS in LOW-VOLTA...

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10th Renewable Power Generation Conference, RPG 2021

作者： Zhou, Yini Li, Tong Liang, Haiwei Zou, Xudong State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China State Grid Zhejiang Electric Power Research Institute Hangzhou China

ISBN: (纸本)9781839536069

As more and more power electronic equipment is connected to the low-voltage distribution network, the stability of the equipment needs to arouse people's attention. With the development of renewable energy, grid-connected converter (GCC) is the most common power electronic equipment as the interface unit. Therefore, this article takes the three-phase LCL type GCC as the research object, and explores the factors that affect the three-phase LCL type GCC in the low-voltage distribution network. First, the dq impedance model of the three-phase GCC is established. Secondly, the factors that may affect the stability are analyzed by the impedance stability criterion. Finally, it is verified by simulation that the line parameters of the low-voltage distribution network have almost no effect on the stability of the three-phase LCL type GCC. But when the three-phase LCL type GCC increases the output power and the number of parallel three-phase GCCs increases, the stability will deteriorate. As a consequence, it is necessary to limit the output power and the number of parallel-connected converters in the distribution network. © The Institution of engineering and technology.

关键词： Stability criteria

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Nonsolvent-Induced Electrospun Fibers with Crater-Like Surface and High-Loading Polytriphenylamine-Derived as a Flexible Cathode for Lithium-Ion Batteries

SSRN

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SSRN 2023年

作者： Xiong, Yufeng Li, Yingjiang Hu, Zhengfei Sun, Zhengquan Cheng, Yiliang Zhang, Yang Dong, Lijie Center for Smart Materials and Devices State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China

Fabricating electrodes simultaneously possessing remarkable flexibility, excellent mechanical properties, and high energy density remains a significant challenge in flexible lithium-ion batteries (LIBs). Herein, a series of flexible organic composite films were prepared with high-loading polytriphenylamine (PTPA) and the derivatives (PTPA-PO) as active material, along with carbon nanotubes (CNTs) serving as conductive filler. The fabrication employed the polyethylene oxide (PEO) assisted nonsolvent (or poor solvent) induced phase separation electrospinning (NIPSE) method. Subsequently, the fiber morphology and electrochemical applications of the flexible organic composite films were systematically studied. Notably, the 60% PTPA-PO/20% CNTs/PEO flexible electrode with a high-loading active material of 60 wt% exhibits a significant discharge capacity of 146.6 mAh·g-1 and a favorable discharge platform ~ 3.7 V vs. Li. Furthermore, the inherent flexibility of electrode contributes to efficient and stable transport of ions and electrons, resulting in a fine capacity retention of 93.3% after 100 cycles. The improvement of electrochemical performance can be rationalized by the unique internal conductive network and crater-like surface structure of the fibers formed through the NIPSE method. This work provides an efficient method to fundamentally improve the energy storage performance and flexibility of LIBs. © 2023, The Authors. All rights reserved.

关键词： Electrospinning

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A Multi-DOF Robot System Based on LightGBM-Driven EEG Decoding Model for BCI Human-machine Interaction

A Multi-DOF Robot System Based on LightGBM-Driven EEG Decodi...

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第42届中国控制会议

作者： Weidong Yan Zhaoliang Xu Yang Li the Department of Automation Science and Electrical Engineering Beihang University State Key Laboratory of Virtual Reality Technology and Systems Beihang University Advanced Institute of Information Technology Peking University

In this study,a multi-degree-of-freedom(Multi-DOF) robot(MDR) system based on a LightGBM-driven electroencephalogram(EEG) decoding model is designed and developed to assist subjects with hand motor dysfunction in their daily activities and *** system mainly consists of a motor imagery electroencephalogram(MI-EEG)evoking layer,an intention decoding layer,and an interaction executive *** MI-EEG evoking layer initially displays a virtual reality(VR) motion imagination scenario,instructing the subjects to imagine a real hand gripping movement,simultaneously collecting the electrical EEG signals and preprocessing the EEG ***,in the intention decoding layer,a network combining temporal-spectral feature fusion and LightGBM(TSFF-LightGBM) for MI-BCI classification is used to more effectively boost brain decoding accuracy and decrease decoding ***,in the interaction executive layer,the Multi-DOF wearable robot is developed to offer hand grasp motion kinesthetic feedback and visual feedback synced with *** following are the key benefits of the proposed MDR system:(1) We propose a new lightweight network structure more suitable for brain computer interface(BCI) interaction systems,achieving more accurate decoding and shorter identification time in different data sets,which helps to improve the practicability of the system and promote the practical clinical application of BCI rehabilitation technology.(2) We integrate BCI,VR,a wearable Multi-DOF robot,motion kinesthetic feedback,and visual feedback to improve human-machine *** to the most recent investigations,the average accuracy of the MDR system on the publicly accessible datasets BCIIV 2a and HGD reached 75.89% and 93.53%,respectively.

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Directly wireless communication of human minds via non-invasive brain-computer-metasurface platform

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eLight 2022年第1期2卷 132-142页

作者： Qian Ma Wei Gao Qiang Xiao Lingsong Ding Tianyi Gao Yajun Zhou Xinxin Gao Tao Yan Che Liu Ze Gu Xianghong Kong Qammer HAbbasi Lianlin Li Cheng‑Wei Qiu Yuanqing Li Tie Jun Cui Institute of Electromagnetic Space Southeast UniversityNanjing 210096China School of Automation Science and Engineering South China University of TechnologyGuangzhou 510641China State Key Laboratory of Millimeter Wave Southeast UniversityNanjing 210096China Center of Intelligent Metamaterials Pazhou Laboratory Guangzhou 510330China Research Center for Brain-Computer Interface Pazhou LabGuangzhou 510330China Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore University of Glasgow James Watt School of EngineeringGlasgow G128QQUK State Key Laboratory of Advanced Optical Communication Systems and Networks Department of ElectronicsPeking UniversityBeijing 100871China

Brain-computer interfaces(BCIs),invasive or non-invasive,have projected unparalleled vision and promise for assisting patients in need to better their interaction with the *** by the BCI-based rehabilitation technologies for nerve-system impairments and amputation,we propose an electromagnetic brain-computer-metasurface(EBCM)paradigm,regulated by human’s cognition by brain signals directly and *** experimentally show that our EBCM platform can translate human’s mind from evoked potentials of P300-based electroencephalography to digital coding information in the electromagnetic domain non-invasively,which can be further processed and transported by an information metasurface in automated and wireless *** wireless communications of the human minds are performed between two EBCM operators with accurate text ***,several other proof-of-concept mind-control schemes are presented using the same EBCM platform,exhibiting flexibly-customized capabilities of information processing and synthesis like visual-beam scanning,wave modulations,and pattern encoding.

关键词： communication computer surface

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Large-scale synthesis of metal nanosheets as highly active catalysts: Combining accumulative roll-bonding and etching process

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Frontiers of Materials Science 2021年第3期15卷 456-464页

作者： Yuxin OUYANG Juan LIU Yue XIN Wenkun ZHU Hailiang YU Liangbing WANG State Key Laboratory for Powder Metallurgy Key Laboratory of Electronic Packing and Advanced Functional Materials of Hunan ProvinceSchool of Materials Science and EngineeringCentral South UniversityChangsha 410083China State Key Laboratory of High Performance Complex Manufacturing College of Mechanical and Electrical EngineeringLight Alloys Research InstituteCentral South UniversityChangsha 410083China State Key Laboratory of Environment-friendly Energy Materials National Co-innovation Center for Nuclear Waste Disposal and Environmental SafetyNuclear Waste and Environmental Safety Key Laboratory of DefenseSchool of National Defence Science&TechnologySouthwest University of Science and TechnologyMianyang 621010China

Metal nanosheets with ultrathin layer of metal atoms represent relatively high specific surface area and fast electronic transmission[1–2].Besides,metal nanosheets are considered to expose abundant active sites,thereby exhibiting significant advantages[3].As a result,metal nanosheets have attracted widespread attention in the field of catalysis[4–8],energy storage[9–10],environmental protection[11],and sensing[12]in recent *** example,amorphous Ir nanosheets were found to be effectively applied to oxygen evolution reaction(OER)under acidic media with a high mass activity of 221.8 A·g^(–1)[4].

关键词： bonding synthesis sheets

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Pole-to-ground Fault Analysis for HVDC Grid Based on Common-and Differential-mode Transformation

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Journal of Modern Power Systems and Clean Energy 2020年第3期8卷 521-530页

作者： Zhen He Jiabing Hu Lei Lin Yuanzhu Chang Zhiyuan He State Key Laboratory of Advanced Electromagnetic Engineering and Technology and School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China Global Energy Interconnection Research Institute State GridBeijing 100192China

Pole-to-ground(PTG) fault analysis is of vital importance for high-voltage direct current(HVDC) grid. However, many factors are not considered in the existing studies such as the asymmetrical property of PTG fault, the coupling issue between DC transmission lines and the complexity of the structure of DC grid. This paper presents a PTG fault analysis method, which is based on common-and differential-mode(CDM)transformation. Similar to the symmetrical component method in AC system, the transformation decomposes the HVDC grid into CDM networks, which is balanced and decoupled. Then, a transfer impedance is defined and calculated based on the impedance matrices of the CDM networks. With the transfer impedance, analytical expressions of fault characteristics that vary with space and time are obtained. The proposed PTG fault analysis method is applicable to arbitrary HVDC grid topologies,and provides a new perspective to understand the fault mechanism. Moreover, the analytical expressions offer theoretical guidance for PTG fault protection. The validity of the proposed PTG fault analysis method is verified in comparison with the simulation results in PSCAD/EMTDC.

关键词： High-voltage direct current(HVDC)grid pole-to-ground(PTG)fault common-and differential-mode(CDM)transformation DC ciruit breaker(DCCB)

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Clean Manufacturing Tial-Ta Alloy by Tantalum Crucible Smelting Tial Alloy

SSRN

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SSRN 2024年

作者： Lei, Xianjun Wei, Feng Xu, Baoqiang Kong, Fantao Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan Province Kunming University of Science and Technology Kunming650093 China State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming650093 China National Engineering Research Center of Vacuum Metallurgy Kunming University of Science and Technology Kunming650093 China Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming650093 China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin150001 China School of Materials Science and Engineering Harbin Institute of Technology Harbin150001 China State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China

In order to solve the pollution problem of smelting TiAl alloy with ceramic crucible, metal Ta crucible is selected to smelt TiAl alloy for clean manufacturing of TiAl-Ta alloy. This study shows that the Ta(ss) layer, Ta(ss)+(Ta,Ti)2Al layer and (Ta,Ti)2Al layer formed on the inner surface of the Ta crucible contribute to protecting Ta crucible from further erosion, while a stable boundary layer produced in TiAl alloy melt is beneficial for stabilizing the composition of TiAl-Ta alloy. After the stable interfacial layer is established, the quantitative relationship between the dissolution thickness of Ta crucible and the increase of Ta content in TiAl-Ta alloy is established. This work provides a novel strategy to prepare the TiAl-based alloys with refractory metal and offers experimental and theoretical fundament for practical applications of clean manufacturing in aerospace field. © 2024, The Authors. All rights reserved.

关键词： Aluminum alloys

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Exploring the Aging Characteristics of Poly(Ionic Liquid)S-Based Thermal Interface Materials

Exploring the Aging Characteristics of Poly(Ionic Liquid)S-B...

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International Conference on (ICEPT) Electronic Packaging technology

作者： Jianhui Zeng Baohao Yang Zeyu Zheng Taoying Rao Yucheng Jiang Dexin Chen Liejun Li Yimin Yao Rong Sun State Key Laboratory of Materials for Integrated Circuits Shenzhen Institute of Advanced Electronic Materials Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen China Research Institute of Materials Science South China University of Technology Guangzhou China Guangdong Key Laboratory for Processing and Forming of Advanced Metallic Materials School of Mechanical & Automotive Engineering South China University of Technology Guangzhou China Institute of Advanced Wear & Corrosion Resistant and Functional Materials Jinan University Guangzhou China

ISBN: (数字)9798350353808

ISBN: (纸本)9798350353815

Thermal interface materials (TIMs) are essential for managing heat in electronics. Silicone systems face challenges such as leakage of silane molecules, limited mechanical flexibility, poor filler compatibility and weak interfacial adhesion. In contrast, poly(ionic liquid)s (PILs) have emerged as promising alternatives due to their exceptional mechanical flexibility, thermal stability, robust interfacial adhesion across various substrates, filler compatibility, self-healing properties, and reprocessability. Yet, a critical gap exists in the thermo-physical and reliability characterization of PILs and their composites. This study introduces a novel TIM composed of PILs and Ga-based liquid metal (LM). The strong interaction between PILs and LM imparts the obtained composites a certain degree of flexibility and superior interface adhesion, making it suitable for use as TIMs. Specifically, the obtained TIM (80% mass fraction of LM) possesses a thermal conductivity of 1.2 W/(m.K) and exhibit an interfacial adhesion strength of 1.1 MPa with silicon, excellent thermal stability (>350°C). Furthermore, the aging characteristics of PIL and its composites with LM were also evaluated in terms of coverage change. This work established a critical foundation for the feasibility study of PIL as a TIM matrix.

关键词： Heating systems Adhesives Aging Thermal conductivity Mechanical factors Silicon Steel

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A Composite Current-Fed LLC Resonant Converter for Wide Input Voltage

A Composite Current-Fed LLC Resonant Converter for Wide Inpu...

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Smart Power & Internet Energy Systems (SPIES), International Conference on

作者： Caifeng Liu Shuang Liu Donghai Zhu Xu Yan Xudong Zou State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan China State Key Laboratory of Advanced Electromagnetic Engineering and Technology China-EU Institute for Clean and Renewable Energy Huazhong University of Science and Technology Wuhan China

The LLC resonant converter is the most commonly used unidirectional isolated DC/DC converter. However, the gain adjustment range of conventional LLC resonant converters is limited and not suitable for applications with wide input voltage. In this paper, a C-LLC resonant converter topology suitable for wide input voltage range is obtained by improving the current-fed LLC resonant converter. The operational modes and stages of the C-LLC resonant converter employing the basic pulse width modulated + double phase shift modulation (PWM+DPS) are analyzed. Then an optimized modulation strategy for efficiency improvement is proposed by optimizing the soft switching range and current RMS values. Finally, a prototype is built to verify the analysis. The efficiency is improved by up to 5% when the optimized modulation strategy is adopted compared to the conventional LLC resonant conversion at voltage mismatch condition.

关键词： Phase modulation Energy Soft switching Prototypes Resonant converters Voltage Switches

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