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Review of Sc microalloying effects in Al-Cu alloys

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1098-1114页

作者： Shenghua Wu Chong Yang Peng zhang Hang Xue Yihan Gao Yuqing Wang Ruihong Wang jinyu zhang Gang Liu Jun Sun State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048China School of Aerospace Engineering North University of ChinaTaiyuan 030051China

Artificially controlling the solid-state precipitation in aluminum (Al) alloys is an efficient way to achieve well-performed properties,and the microalloying strategy is the most frequently adopted method for such a purpose.In this paper,recent advances in lengthscale-dependent scandium (Sc) microalloying effects in Al-Cu model alloys are reviewed.In coarse-grained Al-Cu alloys,the Sc-aided Cu/Sc/vacancies complexes that act as heterogeneous nuclei and Sc segregation at the θ′-Al_(2)Cu/matrix interface that reduces interfacial energy contribute significantly to θ′precipitation.By grain size refinement to the fine/ultrafine-grained scale,the strongly bonded Cu/Sc/vacancies complexes inhibit Cu and vacancy diffusing toward grain boundaries,promoting the desired intragranular θ′precipitation.At nanocrystalline scale,the applied high strain producing high-density vacancies results in the formation of a large quantity of (Cu Sc,vacancy)-rich atomic complexes with high thermal stability,outstandingly improving the strength/ductility synergy and preventing the intractable low-temperature precipitation.This review recommends the use of microalloying technology to modify the precipitation behaviors toward better combined mechanical properties and thermal stability in Al alloys.

关键词： aluminum alloy microalloying effect length-scale dependence precipitation mechanical properties

Heavier Group 14 Congeners of Metalla-isobenzenes:Access to Metalla-isosilabenzene and Metalla-isogermabenzene by One-Pot Reactions

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Chinese Journal of Chemistry 2024年第10期42卷 1121-1127页

作者： jinyu Zhao Yapeng Cai Xin Yang Hong zhang Department of Chemistry Xiamen UniversityXiamenFujian 361005China

Metalla-isosilabenzenes and metalla-isogermabenzenes have been successfully synthesized by the formal[5+1]-cycloaddition of diethynylsilane or diethynylgermane with simple metal complexes.This is the first example of a heavier Group 14 metalla-isobenzene isomer bearing a cumulative double bond motif within a metallacycle.These novel complexes were fully characterized by NMR spectroscopy and single-crystal X-ray diffraction analysis.The stabilization of the cyclic metal-vinylidene complexes has been analyzed using density functional theory(DFT)calculations.When the metalla-isosilabenzenes bearing Si—H bond were treated with the trityl salt as a hydride scavenger,the formation of silylium cation was observed spectroscopically.Both of metalla-isosilabenzenes and metalla-isogermabenzenes can readily undergo migratory insertion reactions to furnish siloles or germoles.

关键词： Metalla-isosilabenzene Metalla-isogermabenzene Density functional calculations Cycloaddition Metallacycles

From germline genome to highly fragmented somatic genome:genome-wide DNA rearrangement during the sexual process in ciliated protists

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Marine Life Science & Technology 2024年第1期6卷 31-49页

作者： Liping Lyu Xue zhang Yunyi Gao Tengteng zhang jinyu Fu Naomi A.Stover Feng Gao Key Laboratory of Evolution&Marine Biodiversity(Ministry of Education) and Institute of Evolution&Marine BiodiversityOcean University of ChinaQingdao 266003China Department of Biology Bradley UniversityPeoriaIL 61625USA Laoshan Laboratory Qingdao 266237China

Genomes are incredibly dynamic within diverse eukaryotes and programmed genome rearrangements(PGR)play important roles in generating genomic diversity.However,genomes and chromosomes in metazoans are usually large in size which prevents our understanding of the origin and evolution of PGR.To expand our knowledge of genomic diversity and the evolutionary origin of complex genome rearrangements,we focus on ciliated protists(ciliates).Ciliates are single-celled eukaryotes with highly fragmented somatic chromosomes and massively scrambled germline genomes.PGR in ciliates occurs extensively by removing massive amounts of repetitive and selfish DNA elements found in the silent germline genome dur-ing development of the somatic genome.We report the partial germline genomes of two spirotrich ciliate species,namely Strombidium cf.sulcatum and Halteria grandinella,along with the most compact and highly fragmented somatic genome for S.cf.sulcatum.We provide the first insights into the genome rearrangements of these two species and compare these features with those of other ciliates.Our analyses reveal:(1)DNA sequence loss through evolution and during PGR in S.cf.sulcatum has combined to produce the most compact and efficient nanochromosomes observed to date;(2)the compact,transcriptome-like somatic genome in both species results from extensive removal of a relatively large number of shorter germline-specific DNA sequences;(3)long chromosome breakage site motifs are duplicated and retained in the somatic genome,revealing a complex model of chromosome fragmentation in spirotrichs;(4)gene scrambling and alternative pro-cessing are found throughout the core spirotrichs,offering unique opportunities to increase genetic diversity and regulation in this group.

关键词： Alternative processing Ciliates Gene scrambling Genome rearrangement Germline genome Somatic genome

A hierarchical enhanced data-driven battery pack capacity estimation framework for real-world operating conditions with fewer labeled data

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Journal of Energy Chemistry 2024年第4期91卷 417-432页

作者： Sijia Yang Caiping zhang Haoze Chen jinyu Wang Dinghong Chen Linjing zhang Weige zhang National Active Distribution Network Technology Research Center(NANTEC) Beijing Jiaotong UniversityBeijing 100044China

Battery pack capacity estimation under real-world operating conditions is important for battery performance optimization and health management,contributing to the reliability and longevity of batterypowered systems.However,complex operating conditions,coupling cell-to-cell inconsistency,and limited labeled data pose great challenges to accurate and robust battery pack capacity estimation.To address these issues,this paper proposes a hierarchical data-driven framework aimed at enhancing the training of machine learning models with fewer labeled data.Unlike traditional data-driven methods that lack interpretability,the hierarchical data-driven framework unveils the“mechanism”of the black box inside the data-driven framework by splitting the final estimation target into cell-level and pack-level intermediate targets.A generalized feature matrix is devised without requiring all cell voltages,significantly reducing the computational cost and memory resources.The generated intermediate target labels and the corresponding features are hierarchically employed to enhance the training of two machine learning models,effectively alleviating the difficulty of learning the relationship from all features due to fewer labeled data and addressing the dilemma of requiring extensive labeled data for accurate estimation.Using only 10%of degradation data,the proposed framework outperforms the state-of-the-art battery pack capacity estimation methods,achieving mean absolute percentage errors of 0.608%,0.601%,and 1.128%for three battery packs whose degradation load profiles represent real-world operating conditions.Its high accuracy,adaptability,and robustness indicate the potential in different application scenarios,which is promising for reducing laborious and expensive aging experiments at the pack level and facilitating the development of battery technology.

关键词： Lithium-ion battery pack Capacity estimation Label generation Multi-machine learning model Real-world operating

RACK1A promotes hypocotyl elongation by scaffolding light signaling components in Arabidopsis

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Journal of Integrative Plant Biology 2024年第5期66卷 956-972页

作者： Yajuan Fu Wei Zhu Yeling Zhou Yujing Su Zhiyong Li Dayan zhang Dong zhang jinyu Shen Jiansheng Liang Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes Department of BiologySchool of Life SciencesInstitute of Plant and Food SciencesSouthern University of Science and TechnologyShenzhen 518055China

Plants deploy versatile scaffold proteins to intricately modulate complex cell signaling.Among these,RACK1A(Receptors for Activated C Kinase 1A)stands out as a multifaceted scaffold protein functioning as a central integrative hub for diverse signaling pathways.However,the precise mechanisms by which RACK1A orchestrates signal transduction to optimize seedling development remain largely unclear.Here,we demonstrate that RACK1A facilitates hypocotyl elongation by functioning as a flexible platform that connects multiple key components of light signaling pathways.RACK1A interacts with PHYTOCHROME INTERACTING FACTOR(PIF)3,enhances PIF3 binding to the promoter of BBX11 and down-regulates its transcription.Furthermore,RACK1A associates with ELONGATED HYPOCOTYL 5(HY5)to repress HY5 biochemical activity toward target genes,ultimately contributing to hypocotyl elongation.In darkness,RACK1A is targeted by CONSTITUTIVELY PHOTOMORPHOGENIC(COP)1 upon phosphorylation and subjected to COP1-mediated degradation via the 26 S proteasome system.Our findings provide new insights into how plants utilize scaffold proteins to regulate hypocotyl elongation,ensuring proper skoto-and photo-morphogenic development.

关键词： Arabidopsis hypocotyl development light signaling components RACK1 scaffoldprotein

High-performance terahertz modulators induced by substrate field in Te-based all-2D heterojunctions

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Light(Science & Applications) 2024年第3期13卷 577-586页

作者： Pujing zhang Qihang Liang Qingli Zhou jinyu Chen Menglei Li Yuwang Deng Wanlin Liang Liangliang zhang Qinghua zhang Lin Gu Chen Ge Kui-juan Jin Cunlin zhang Guozhen Yang Department of Physics Key Laboratory of Terahertz OptoelectronicsMinistry of Educationand Beijing Advanced Innovation Center for Imaging Theory and TechnologyCapital Normal UniversityBeijing 100048China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Department of Materials Science and Engineering Beijing National Center for Electron Microscopy and Laboratory of Advanced MaterialsTsinghua UniversityBeijing 100084China

High-performance active terahertz modulators as the indispensable core components are of great importance for the next generation communication technology.However,they currently suffer from the tradeoff between modulation depth and speed.Here,we introduce two-dimensional(2D)tellurium(Te)nanofilms with the unique structure as a new class of optically controlled terahertz modulators and demonstrate their integrated heterojunctions can successfully improve the device performances to the optimal and applicable levels among the existing all-2D broadband modulators.Further photoresponse measurements confirm the significant impact of the stacking order.We first clarify the direction of the substrate-induced electric field through first-principles calculations and uncover the unusual interaction mechanism in the photoexcited carrier dynamics associated with the charge transfer and interlayer exciton recombination.This advances the fundamental and applicative research of Te nanomaterials in high-performance terahertz optoelectronics.

关键词： performance field terahertz

The roles and mechanisms of SREBP1 in cancer development and drug response

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Genes & Diseases 2024年第4期11卷 258-269页

作者： Ying He Shasha Qi Lu Chen jinyu Zhu Linda Liang Xudong Chen Hao zhang Lvjia Zhuo Shujuan Zhao Shuiping Liu Tian Xie School of Pharmacy Hangzhou Normal UniversityHangzhouZhejiang 311121China Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines Engineering Laboratory of Development and Application of Traditional Chinese MedicinesCollaborative Innovation Center of Traditional Chinese Medicines of Zhejiang ProvinceHangzhou Normal UniversityHangzhouZhejiang 311121China Laboratory of Cancer Genomics Division of Cellular and Molecular ResearchNational Cancer Centre SingaporeSingapore 169610Singapore

Cancer occurrence and development are closely related to increased lipid produc-tion and glucose consumption.Lipids are the basic component of the cell membrane and play a significant role in cancer cell processes such as cell-to-cell recognition,signal transduction,and energy supply,which are vital for cancer cell rapid proliferation,invasion,and metastasis.Sterol regulatory element-binding transcription factor 1(SREBP1)is a key transcription factor regulating the expression of genes related to cholesterol biosynthesis,lipid homeostasis,and fatty acid synthesis.In addition,SREBP1 and its upstream or downstream target genes are implicated in various metabolic diseases,particularly cancer.However,no review of sREBP1 in cancer biology has yet been published.Herein,we summarized the roles and mechanisms of SREBP1 biological processes in cancer cells,including SREBP1 modification,lipid metabolism and reprogramming,glucose and mitochondrial metabolism,immunity,and tumor microenvi-ronment,epithelial-mesenchymal transition,cell cycle,apoptosis,and ferroptosis.Addition-ally,we discussed the potential role of SREBP1 in cancer prognosis,drug response such as drug sensitivity to chemotherapy and radiotherapy,and the potential drugs targeting SREBP1 and its corresponding pathway,elucidating the potential clinical application based on SREBP1 and its corresponding signal pathway.

关键词： Cancer Drug Lipid metabolism reprogramming Resistance SREBP1

Enhancement of CH_(3)CO^(*) adsorption by editing d-orbital states of Pd to boost C–C bond cleavage of ethanol eletrooxidation

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Science China Chemistry 2024年第2期67卷 696-704页

作者： Yuchen Qin Fengqi Wang Pei Liu jinyu Ye Qian Wang Yao Wang Guangce Jiang Lijie Liu Pengfang zhang Xiaobiao Liu Xin Zheng Yunlai Ren Junjun Li Zhicheng zhang College of Sciences Henan Agricultural UniversityZhengzhou450000China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative Innovation Center of Chemical Science and EngineeringTianjin300072China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen361005China Department of Analysis Sinopec Engineering Group Luoyang R&D Center of TechnologyLuoyang471000China School of Chemical and Material Engineering Jiangnan UniversityWuxi214211China Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology Liaocheng UniversityLiaocheng252000China

Improving the complete ethanol electrooxidation on Pd-based catalysts in alkaline media has drawn widely attention due to the high mass energy density.However,the weak adsorption energy of CH_(3)CO^(*) on Pd restricts the C–C bond cleavage.Inspired by the molecular orbital theory,we proposed the d-state-editing strategy to construct more unoccupied d-states of Pd for the enhanced interaction with CH_(3)CO^(*) to break C–C bonds.As expected,the reduced number of e_g electrons and more unoccupied d-states of Pd successfully formed on as-prepared porous Rh Au–Pd Cu nanosheets(PNSs).Theoretical calculations show that the optimized d-states of Rh Au–Pd Cu PNS can effectively improve the adsorption of CH_(3)CO^(*) and drastically reduce the energy barrier of C–C bond cleavage,thus boosting the complete oxidation of ethanol.The charge ratio of C_1 pathway on Rh Au–Pd Cu PNSs is 51.5%,more than 2 times higher than that of Pd NSs.Our finding provides an innovative perspective for the design of highly-efficient noble-based electrocatalysts.

关键词： C–C bond cleavage CH_(3)CO^(*)adsorption unoccupied d-states ethanol oxidation reaction RhAu–PdCu porous nanosheets

Effects and Causes of VR-Supported Interpreting Learning Environment on the Interpretation Classroom Anxiety of Student Interpreter

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Open Journal of Applied Sciences 2024年第2期14卷 398-410页

作者： Ruizhe zhang jinyu Liu College of Foreign Languages Inner Mongolia University Hohhot China

Interpreting activity is considered a high-anxiety activity due to its immediacy, multitasking, complexity of cognitive processing, and uncertainty of cognitive processing. Research has shown that interpreting anxiety, as the biggest emotional obstacle in the interpreting process, is the main emotional factor that leads to individual differences in interpreting. Students often claim to have fear or anxiety behaviors in interpreting exams, interpreting competitions, and interpreting classes. However, the research on interpreting teaching attaches importance to the cultivation of language knowledge, cultural knowledge, and interpreting skills, and does not pay enough attention to emotional factors such as motivation and anxiety in interpreting learning, which makes it difficult for the cultivated interpreters to meet the requirements of professional practice. In recent years, virtual reality technology (VR) has been gradually applied in the field of foreign language and interpreting teaching for creating a real, interactive and experiential language learning environment. Situated Learning Theory stresses that the fundamental mechanism for learning to take place is for individuals to participate in the real context in which knowledge is generated, and to realize the construction of knowledge through the interaction with the community of practice and the environment. Virtual reality technology can satisfy the needs of language learners for real contexts by providing learners with immersive, imaginative and interactive scenario simulations, and has a certain positive effect on alleviating learning anxiety. Therefore, relying on the virtual simulation course “United Nations Kubuqi International Desert Ecological Science and Technology Innovation International Volunteer Language Service Practical Training System”, this paper adopts a combination of quantitative and qualitative analyses to investigate the interpretation anxiety level of the interpreter trainees and the factors affecting them in the VR situation to help t

关键词： Interpreter Anxiety Virtual Reality Situated Cognition and Learning