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Synergy of inside doped metals–Outside coated graphene to enhance hydrogen storage in magnesium-based alloys

Journal of Magnesium and Alloys 2024年第6期12卷 2462-2471页

作者： Kun Zhang Yu Chang Jingjing Lei Jing Chen Tingzhi Si Xiaoli Ding Ping Cui Hai-Wen Li Qingan Zhang Yongtao Li School of Materials Science and Engineering&Low-Carbon New Materials research Center Anhui University of TechnologyMaanshanAnhui 243002China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing100084 Hefei General Machinery research Institute HefeiAnhui 230031China Key laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials of Ministry of Education Anhui University of TechnologyMaanshan 243002China

Grain growth of magnesium(Mg)and its hydride is one of the main reasons for kinetic and capacity degradation during the hydrogen absorption and desorption *** solve this problem,herein we propose a novel method involving synergistic effect of inside embedded metals and outside coated graphene to limit the growth of Mg and its hydride *** graphene coated Mg-Y-Al alloys were selected as a model system for demonstrating this positive effect where the Mg_(91)Y_(3)Al_(6)alloy was first prepared by rapidly solidified method and then high-pressure milled with 5 wt%graphene upon 5 MPa hydrogen gas for obtaining in-situ formed YAl_(2)and YH_(3)embedded in the MgH_(2)matrix with graphene shell(denoted as MgH_(2)-Y-Al@GR).In comparison to pure MgH_(2),the obtained MgH_(2)-Y-Al@GR composites deliver much better kinetics and more stable cyclic *** instance,the MgH_(2)-Y-Al@GR can release about 6.1 wt%H_(2)within 30 min at 300℃ but pure MgH_(2)only desorbs∼1.5 wt%H_(2).The activation energy for desorption of MgH_(2)-Y-Al@GR samples is calculated to be 75.3±9.1 kJ/mol that is much lower than approximately 160 kJ/mol for pure MgH_(2).Moreover,its capacity retention is promoted from∼57%of pure MgH_(2)to∼84%after 50th cycles without obvious particle agglomeration and grain *** synergistic effect of outside graphene coating with inside embedded metals which could provide a huge number of active sites for catalysis as well as inhibit the grain growth of Mg and its hydride is believed to be responsible for these.

关键词： Energy Hydrogen storage Mg alloys Synergy effect

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Vacancy defect MoSeTe embedded in N and F co-doped carbon skeleton for high performance sodium ion batteries and hybrid capacitors

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Journal of Energy Chemistry 2024年第3期90卷 652-664,I0014页

作者： Dehui Yang Wentao Guo Fei Guo Jiaming Zhu Gang Wang Hui Wang Guanghui Yuan Shenghua Ma Beibei Wang State Key laboratory of Photon-Technology in Western China Energy International Collaborative Center on Photoelectric Technology and Nano Functional MaterialsInstitute of Photonics&Photon-TechnologyNorthwest UniversityXi’an 710127ShannxiChina Key laboratory of Synthetic and Natural Functional Molecule Chemistry(Ministry of Education) College of Chemistry&Materials ScienceNorthwest UniversityXi’an 710127ShannxiChina School of Chemistry and Chemical Engineering Ankang Research Centre of New Nano-materials Science and TechnologyShaanxi University Innovation Research Institute of Advanced Energy Storage Materials and Battery Technology for Future IndustrializationAnkang UniversityAnkang 725000ShannxiChina

Sodium-ion batteries(SIBs) and hybrid capacitors(SIHCs) have garnered significant attention in energy storage due to their inherent advantages,including high energy density,cost-effectiveness,and enhanced ***,developing high-performance anode materials to improve sodium storage performa nce still remains a major ***,a facile one-pot method has been developed to fabricate a hybrid of MoSeTe nanosheets implanted within the N,F co-doped honeycomb carbon skeleton(MoSeTe/N,F@C).Experimental results demonstrate that the incorporation of large-sized Te atoms into MoSeTe nanosheets enlarges the layer spacing and creates abundant anion vacancies,which effectively facilitate the insertion/extraction of Na^(+) and provide numerous ion adsorption sites for rapid surface capacitive ***,the heteroatoms N,F co-doped honeycomb carbon skeleton with a highly conductive network can restrain the volume expansion and boost reaction kinetics within the *** anticipated,the MoSeTe/N,F@C anode exhibits high reversible capacities along with exceptional cycle *** coupled with Na_(3)V_(2)(PO_(4))_(3)@C(NVPF@C) to form SIB full cells,the anode delivers a reversible specific capacity of 126 mA h g^(-1) after 100 cycles at 0.1 A g^(-1).Furthermore,when combined with AC to form SIHC full cells,the anode demonstrates excellent cycling stability with a reversible specific capacity of50 mA h g^(-1) keeping over 3700 cycles at 1.0 A g^(-1).In situ XRD,ex situ TEM characterization,and theoretical calculations(DFT) further confirm the reversibility of sodium storage in MoSeTe/N,F@C anode materials during electrochemical reactions,highlighting their potential for widespread practical *** work provides new insights into the promising utilization of advanced transition metal dichalcogenides as anode materials for Na^(+)-based energy storage devices.

关键词： MoSeTe N F co-doped honeycomb carbon skeleton Sodium-ion batteries Sodium-ion hybrid capacitor

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Genome editing of 30 UTR-embedded inhibitory region enables generation of gene knock-up alleles in plants

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Plant Communications 2024年第3期5卷 1-4页

作者： Hongwen Wang Dahan Zhang Mingjiang Chen Xiangbing Meng Shiwei Bai Peiyong Xin Jijun Yan Jinfang Chu Jiayang Li Hong Yu State Key laboratory of Plant Genomics and National Center for Plant Gene research Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Yazhouwan National laboratory Sanya 572024China

Dear Editor,Genome editing has revolutionized speed breeding by enabling researchers to alter the genome directly as desired(Gao,2021).The most widely used CRISPR–Cas9 technology has mainly been applied to engineer null mutations in coding sequences,with the goal of creating loss-of-function ***,upstream regulatory elements of the promoter region and 50 upstream open reading frame(uORF)have been engineered to generate gain-of-function alleles,producing versatile cis-regulatory effects,usually through changes in gene expression levels(Rodrıguez-Leal et al.,2017;Zhang et al.,2018;Song et al.,2022).

关键词： upstream breeding versatile

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Hydrodynamic function and spring constant calibration of FluidFM micropipette cantilevers

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Microsystems & Nanoengineering 2024年第1期10卷 277-286页

作者： Attila Bonyár Ágoston G.Nagy Hans Gunstheimer Gotthold Fläschner Robert Horvath Department of Electronics Technology Faculty of Electrical Engineering and InformaticsBudapest University of Technology and EconomicsBudapestHungary Nanobiosensorics laboratory Institute of Technical Physics and Materials ScienceCentre for Energy ResearchHUN-RENBudapestHungary Nanosurf AG Gräubernstrasse 12CH-4410 LiestalSwitzerland

Fluidic force microscopy(FluidFM)fuses the force sensitivity of atomic force microscopy with the manipulation capabilities of microfluidics by using microfabricated cantilevers with embedded fluidic *** innovation initiated new research and development directions in biology,biophysics,and material *** acquire reliable and reproducible data,the calibration of the force sensor is ***,the hollow FluidFM cantilevers contain a row of parallel pillars inside a rectangular *** precise spring constant calibration of the internally structured cantilever is far from trivial,and existing methods generally assume simplifications that are not applicable to these special types of *** addition,the Sader method,which is currently implemented by the FluidFM community,relies on the precise measurement of the quality factor,which renders the calibration of the spring constant sensitive to *** this study,the hydrodynamic function of these special types of hollow cantilevers was experimentally determined with different *** on the hydrodynamic function,a novel spring constant calibration method was adapted,which relied only on the two resonance frequencies of the cantilever,measured in air and in a *** on these results,our proposed method can be successfully used for the reliable,noise-free calibration of hollow FluidFM cantilevers.

关键词： spring cantilever function

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STRAP binds to and promotes the repair of N1-methyldeoxyadenosine in DNA

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Chinese Chemical Letters 2024年第3期35卷 204-207页

作者： Meijuan Zhou Qian Liu Mengting Pan Ying Yang Xiaoxia Dai Changjun You State Key laboratory of Chemo/Biosensing and Chemometrics Hunan Provincial Key Laboratory of Biomacromolecular Chemical BiologyMolecular Science and Biomedicine LaboratoryCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China

N1-methyladenosine(m1A)is an important RNA modification that functions in various biological processes by interacting with cellular ***,the binding proteins of N1-methyldeoxyadenosine(1mdA)in DNA remain largely ***,we employed a quantitative proteomics strategy to identify the potential binding proteins of 1mdA in human *** results revealed that serine–threonine kinase receptor-associated protein(STRAP)can bind to 1mdA-carrying *** further demonstrated that STRAP participates in alkylating agent-induced DNA damage response and can promote the repair of 1mdA embedded in ***,we investigated the effects of STRAP on 1mdA-induced perturbation in transcription using a shuttle vector-and next-generation sequencing-based assay,and found that STRAP is involved in the transcriptional bypass of 1mdA in human ***,our study revealed STRAP as a novel 1mdA-binding protein in human cells and provided new insight into the biological implications of STRAP and 1mdA modification in human diseases.

关键词： N1-methyldeoxyadenosine 1mdA-binding protein STRAP DNA repair Transcription

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An Intelligent Bridge Multi-Dimension Deflection IoT Monitoring System Based on Laser Datum and Imaging

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： Dan Zhao Huifeng Wang Hao Du Haoyi Cheng Lu Peng Yaru Liang He Huang Yunmeng Li School of Electronic &Control Engineering， Chang'an University research Institute of Highway Ministry of Transport State Key laboratory of Traction Power， Southwest Jiaotong University

Aiming at the all-weather automatic monitoring of bridge structure health monitoring， an embedded bridge multi-dimensional (horizontal and vertical) deflection monitoring system based on dual laser references is proposed. The controller turns on the laser reference transmitter through instructions to emit the laser reference. The intelligent target system located in the middle of the span will calculate the multi-dimensional deflection and deformation information of the bridge structure according to the laser spot projected on the diffuse optical target， and pass this information through the wireless network communication unit transmits to the cloud platform to realize real-time monitoring of the bridge structure status and other parameters. Through the laboratory platform， it is found that the measurement error of this method is less than 300 μm， and the data update rate is less than 66 ms， which meets the requirements of bridge structural health monitoring. This method solves the problem of low efficiency of artificial bridge deflection monitoring， realizes all-weather online real-time monitoring of bridge deflection detection， and ensures the accuracy and efficiency of the measurement system.

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RNAirport:a deep neural network-based database characterizing representative gene models inplants

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Journal of Genetics and Genomics 2024年第6期51卷 652-664页

作者： Sitao Zhu Shu Yuan Ruixia Niu Yulu Zhou Zhao Wang Guoyong Xu State Key laboratory of Hybrid Rice Institute for Advanced Studies(IAS)Wuhan UniversityWuhanHubei 430072China Hubei Hongshan laboratory WuhanHubei 430070China

A 5'-leader,known initially as the 5'-untranslated region,contains multiple isoforms due to alternative splicing(aS)and alternative transcription start site(aTSS).Therefore,a representative 5'-leader is demanded to examine the embedded RNA regulatory elements in controlling translation ***,we develop a ranking algorithm and a deep-learning model to annotate representative 5'-leaders for five plant *** rank the intra-sample and inter-sample frequency of aS-mediated transcript isoforms using the Kruskal-Wallis test-based algorithm and identify the representative aS-5'-*** further assign a representative 5'-end,we train the deep-learning model 5'leaderP to learn aTsS-mediated 5'-end distribution patterns from cap-analysis gene expression *** model accurately predicts the 5'-end,confirmed experimentally in Arabidopsis and *** representative 5'-leader-contained gene models and 5'leaderP can be accessed at RNAirport(http:/***/leader5P/).The Stage 1 annotation of 5'-leader records 5'-leader diversity and will pave the way to Ribo-Seq open-reading frame annotation,identical to the project recently initiated by human GENCODE.

关键词： 5'-leader Transcript isoforms RNA regulatory elements UORF Deep learning Synthetic biology Translational control

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Subtraction of liposome signals in cryo-EM structural determination of protein-liposome complexes

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Chinese Physics B 2024年第8期33卷 569-577页

作者：李首卿李明王玉梅李雪明 Institute of Physics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Key laboratory for Protein Sciences of Ministry of Education School of Life SciencesTsinghua UniversityBeijing 100084China State Key laboratory of Membrane Biology School of Life SciencesTsinghua UniversityBeijing 100084China Tsinghua–Peking Joint Center for Life Sciences Beijing 100084China Beijing Frontier research Center for Biological Structure Beijing 100084China School of Life Sciences Tsinghua UniversityBeijing 100084China Beijing Branch of Songshan Lake Materials laboratory Beijing 100190China

Reconstituting membrane proteins in liposomes and determining their structure is a common method for determining membrane protein structures using single-particle cryo-electron microscopy(cryo-EM).However,the strong signal of liposomes under cryo-EM imaging conditions often interferes with the structural determination of the embedded membrane ***,we propose a liposome signal subtraction method based on single-particle two-dimensional(2D)classification average images,aimed at enhancing the reconstruction resolution of membrane *** analyzed the signal distribution characteristics of liposomes and proteins within the 2D classification average images of protein–liposome complexes in the frequency *** on this analysis,we designed a method to subtract the liposome signals from the original particle *** the subtraction,the accuracy of single-particle three-dimensional(3D)alignment was improved,enhancing the resolution of the final 3D *** demonstrated this method using a PIEZO1-proteoliposome dataset by improving the resolution of the PIEZO1 protein.

关键词： cryo-EM protein–liposome complexes liposome signal subtraction 2D classification averaging

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A Transparent Photoresist Made of Titanium Dioxide Nanoparticle-embedded Acrylic Resin with a Tunable Refractive Index for UV-Imprint Lithography

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Engineering 2024年第6期37卷 96-104页

作者： Yinglu Liu Dan Wang Changlin Liu Qianqian Hao Jian Li Jie-Xin Wang Xiuyun Chen Peng Zhong Xibin Shao Jian-Feng Chen State Key laboratory of Organic–Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China BOE Technology Group Co. Ltd.Beijing 100176China

Transparent photoresists with a high refractive index(RI)and high transmittance in visible wavelengths have promising functionalities in optical *** work reports a kind of tunable optical material composed of titanium dioxide nanoparticles embedded in acrylic resin with a high RI for ultraviolet(UV)-imprint *** hybrid film exhibits a tunable RI of up to 1.67(589 nm)after being cured by UV light,while maintaining both a high transparency of over 98%in the visible light range and a low haze of less than 0.05%.The precision machining of optical microstructures can be imprinted easily and efficiently using the hybrid resin,which acts as a light guide plate(LGP)to guide the light from the side to the top in order to conserve the energy of the display *** preliminary studies based on both laboratory and commercial experiments pave the way for exploiting the unparalleled optical properties of nanocomposite resins and promoting their industrial application.

关键词： Photoresist Tunable refractive index Hanson solubility Ultraviolet imprint Organic-inorganic composites

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A high-precision phase-derived range and velocity measurement method based on synthetic wideband pulse Doppler radar

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Science China(Information Sciences) 2017年第8期60卷 151-162页

作者： Huayu FAN Lixiang REN Teng LONG Erke MAO Beijing Key laboratory of embedded Real-time Information Processing Technology Beijing Institute of Technology Radar research laboratory Beijing Institute of Technology

Development of radar technology needs to address the two-dimensional high resolution of range and velocity simultaneously for high-speed targets. Taking advantage of the superior coherent performance of synthetic wideband pulse Doppler radar, this paper elaborates the principles of phase-derived range and velocity measurements. Moreover, this paper explores the key technologies of unwrapping phase ambiguity, and discusses the phase unwrapping strategy at a low signal-to-noise ratio(SNR). The proposed method can be applied to the conditions of low SNR and has comparatively strong practicality in engineering. Both the ejection ball and civil aircraft experiments have validated the correctness and feasibility of the proposed method. In particular,the experimental results reveal that the accuracy of phase-derived range and velocity measurement has reached a level of submillimeter or millimeter and centimeter/second or submillimeter/second, respectively.

关键词： synthetic wideband PD radar phase-derived range measurement phase-derived velocity measurement unwrapping phase ambiguity track filtering minimum entropy method

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