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3D-Printed Porous High-Entropy Alloy Boosts Peroxymonosulfate Activation for Long-Term Organic Pollutant Degradation 认领 引用
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作者 Sheng Guo Mengmeng Yang +7 位作者 Xizi Gao Yao Huang Yushan Huang Liming You Changjun Han Chao Cai Fengxi Chen Rong Chen 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期355-367,共13页
High-entropy alloys(HEAs)have attracted considerable interest from researchers owing to their tunable chemical compositions,exceptional structural stability,and promising catalytic properties.However,their large-scale... High-entropy alloys(HEAs)have attracted considerable interest from researchers owing to their tunable chemical compositions,exceptional structural stability,and promising catalytic properties.However,their large-scale application is often hindered by complex manufacturing techniques and poor durability.Herein,we report a simple and cost-effective threedimensional(3D)printing strategy to fabricate a 3D-FeMnCrCo HEA catalyst with precisely controlled composition,structure,and porosity.The as-prepared 3D-FeMnCrCo catalyst exhibits high printing accuracy,excellent compression resistance,and remarkable efficiency in degrading organic contaminants using peroxymonosulfate(PMS)activation.Notably,the catalyst maintains outstanding catalytic stability over 100 consecutive cycles,which outperforms most of its powdered counterparts.Theoretical calculations and controlled experiments reveal that a synergistic combination of Fe/Mn electron donation,Comediated charge buffering,and Cr-driven orbital hybridization lowers the electron transfer energy barrier,thereby enhancing PMS activation.Mechanistic studies further show that singlet oxygen is the predominant reactive species in the 3DFeMnCrCo/PMS system.The biotoxicity of degraded pollutants and the catalyst's performance in treating actual wastewater are also systematically evaluated.This work provides critical insights into the practical application of HEAs in water treatment and guides the design of efficient,stable,and easily recoverable catalysts for environmental remediation. 展开更多
关键词 3D printing advanced oxidation process high-entropy alloy peroxymonosulfate water treatment
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Non-synchronous strain effects on a hetero-bonded van der Waals material CrSBr 认领 引用
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作者 Junming Guo Wenqiang Shi +7 位作者 Kaipeng Ni Xing Chen Daxiang Liu Xue Liu Shouguo Wang Qian Li Rui-Chun Xiao Mengmeng Yang 《Chinese Physics B》 SCIE EI CAS CSCD 2025年第10期392-397,共6页
The van der Waals(vd W)material Cr SBr exhibits a distinctive hetero-bonded structure,characterized by fence-like and rectangular configurations viewed from different crystallographic orientations.Mechanical deformati... The van der Waals(vd W)material Cr SBr exhibits a distinctive hetero-bonded structure,characterized by fence-like and rectangular configurations viewed from different crystallographic orientations.Mechanical deformation of this unique structure can induce significant anisotropic electronic and optical properties.In this study,we systematically investigate the non-synchronous strain response of Cr SBr through theoretical and experimental approaches.Our results reveal that the electronic band structure of Cr SBr is predominantly governed by the intralayer Cr-S bonds along the b-axis,whereas the characteristic Raman peak Ag3arises from interlayer Cr-S bond vibrations in each quasi-monolayer.Notably,the different strain responses of these two types of bonds,stemming from the hetero-bonded architecture,lead to distinct behaviors in photoluminescence(PL)and Raman spectra under uniaxial strain.Specifically,the electronic band structure demonstrates heightened sensitivity to tensile strain along the b-axis,while the Ag3Raman mode exhibits greater sensitivity to strain along the a-axis.These insights advance the understanding of strain-induced anisotropies in Cr SBr and provide valuable guidance for the design of vd W-based optoelectronic devices. 展开更多
关键词 hetero-bond uniaxial strain CrSBr
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A layered aerogel composite with silica fibers,SiC nanowires,and silica aerogels ternary networks for thermal insulation at high-temperature 认领 引用 被引量：4
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作者 Qiong Wu Mengmeng Yang +10 位作者 Zhaofeng Chen Le Lu Zhudan Ma Yang Ding Longpan Yin Tianlong Liu Manna Li Lixia Yang Bin Hou Huanjun Zhu Sheng Cui 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第1期71-80,共10页
Due to excellent thermal insulation performance at room temperature and ultralow density,silica aero-gels are candidates for thermal insulation.However,at high temperatures,the thermal insulation prop-erty of silica a... Due to excellent thermal insulation performance at room temperature and ultralow density,silica aero-gels are candidates for thermal insulation.However,at high temperatures,the thermal insulation prop-erty of silica aerogels decreased greatly caused by transparency to heat radiation.Opacifiers introduced into silica sol can block heat radiation yet destroy the uniformity of aerogels.Herein,we designed and prepared a silica aerogel composite with oriented and layered silica fibers(SFs),SiC nanowires(SiCNWs),and silica aerogels,which were prepared by papermaking,chemical vapor infiltration(CVI),and sol-gel respectively.Firstly,oriented and layered SFs made still air a wall to block heat transfer by the solid phase.Secondly,SiCNWs were grown in situ on the surface of SFs evenly to weave into the network,and the network reduced the gaseous thermal conductivity by dividing cracks in SFs/SiCNWs/SA.Thirdly,SiCNWs weakened the heat transfer by radiation at high temperatures.Therefore,SFs/SiCNWs/SA presented remarkable thermal insulation(0.017 W(m K)-1 at 25℃,0.0287 W(m K)-1 at 500℃,and 0.094 W(m K)-1 at 1000℃).Besides,SFs/SiCNWs/SA exhibited remarkable thermal stability(no size transform after being heat treated at 1000℃ for 1800 s)and tensile strength(0.75 MPa).These integrated properties made SFs/SiCNWs/SA a promising candidate for highly efficient thermal insulators. 展开更多
关键词 Silica aerogel Thermal insulation SiC nanowires Layered structure
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Realizing soft two-dimensional room temperature magnets in oxidized(Fe75Co25)5GeTe2 认领 引用
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作者 Chunyu Qin Yanan Yuan +9 位作者 Jiapeng Zhao Daxiang Liu Fangfang Pei Siyu Wang Xiaoli Chen Xiang Chen Hongrui Zhang Mengmeng Yang He Huang Qian Li 《Journal of University of Science and Technology of China》 CAS CSCD 北大核心 2025年第10期32-39,I0001,I0002,共8页
Two-dimensional(2D)van der Waals(vdW)magnets have demonstrated intriguing functionalities in spintronic devices and have drawn enormous interest.Nevertheless,the development of soft in-plane 2D magnets with low coerci... Two-dimensional(2D)van der Waals(vdW)magnets have demonstrated intriguing functionalities in spintronic devices and have drawn enormous interest.Nevertheless,the development of soft in-plane 2D magnets with low coercivity remains limited.In this study,we fabricated a high-quality(Fe75Co25)5GeTe2crystal and achieved a soft in-plane 2D magnet with coercivity of approximately 3 Oe in a naturally oxidized(Fe75Co25)5GeTe2flake at room temperature.A combination of X-ray magnetic circular dichroism(XMCD)and ferromagnetic resonance(FMR)revealed a high Curie temperature of~350 K and relatively low magnetic damping at room temperature.Kerr microscopy further demonstrated that the oxidized flakes exhibited exchange bias and an unconventional reduction in coercivity compared with their non-oxidized counterparts at liquid nitrogen temperatures.Detailed analyses using transmission electron microscopy(TEM)and density functional theory(DFT)calculations attribute this behavior to modifications in magnetic anisotropy and interlayer exchange coupling induced by oxygen intercalation.These findings deepen the understanding of the magnetic properties of the cobalt-doped Fe5GeTe2family and highlight the potential of oxidation modulation in 2D vdW magnets,positioning(Fe75Co25)5GeTe2as a promising candidate for next-generation spintronic devices. 展开更多
关键词 soft two-dimensional van der Waals ferromagnet exchange bias X-ray magnetic circular dichroism Kerr microscopy ferromagnetic resonance
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Hierarchical porous nitrogen,oxygen,and phosphorus ternary doped hollow biomass carbon spheres for high-speed and long-life potassium storage 认领 引用 被引量：23
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作者 Mengmeng Yang Qingquan Kong +2 位作者 Wei Feng Weitang Yao Qingyuan Wang 《Carbon Energy》 SCIE CAS CSCD 2022年第1期45-59,共15页
Limited lithium resources have promoted the exploration of new battery technologies.Among them,potassium-ion batteries are considered as promising alternatives.At present,commercial graphite and other carbon-based mat... Limited lithium resources have promoted the exploration of new battery technologies.Among them,potassium-ion batteries are considered as promising alternatives.At present,commercial graphite and other carbon-based materials have shown good prospects as anodes for potassium-ion batteries.However,the volume expansion and structural collapse caused by periodic K+insertion/extraction have severely restricted further development and application of potassium-ion batteries.A hollow biomass carbon ball(NOP-PB)ternarily doped with N,O,and P was synthesized and used as the negative electrode of a potassium-ion battery.X-ray photoelectron spectroscopy,Fourier‐transform infrared spectroscopy,and transmission electron microscopy confirmed that the hollow biomass carbon spheres were successfully doped with N,O,and P.Further analysis proved that N,O,and P ternary doping expands the interlayer distance of the graphite surface and introduces more defect sites.DFT calculations simultaneously proved that the K adsorption energy of the doped structure is greatly improved.The solid hollow hierarchical porous structure buffers the volume expansion of the potassium insertion process,maintains the original structure after a long cycle and promotes the transfer of potassium ions and electrons.Therefore,the NOP‐PB negative electrode shows extremely enhanced electrochemical performance,including high specific capacity,excellent long‐term stability,and good rate stability. 展开更多
关键词 anodes hierarchical porous hollow carbon spheres N/O/P co-doping potassium-ion batteries
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肿瘤相关的巨噬细胞在口腔癌中的促癌机制 认领 引用 被引量：1
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作者 徐潇奕 王斌 +1 位作者 杨檬檬 沈军 《中国肿瘤临床》 CAS CSCD 北大核心 2025年第15期783-790,共8页
口腔癌是一种多因素引发的头颈部常见恶性肿瘤,其中吸烟、饮酒、HPV感染等已被证实为主要致病因素。肿瘤微环境可能通过免疫细胞的激活、细胞因子的分泌等途径在口腔癌的发生和进展中发挥一定作用。近年来,口腔癌肿瘤微环境在其进展中... 口腔癌是一种多因素引发的头颈部常见恶性肿瘤,其中吸烟、饮酒、HPV感染等已被证实为主要致病因素。肿瘤微环境可能通过免疫细胞的激活、细胞因子的分泌等途径在口腔癌的发生和进展中发挥一定作用。近年来,口腔癌肿瘤微环境在其进展中的作用越发受到重视。肿瘤相关的巨噬细胞(tumor-associated macrophages,TAMs)是包括口腔癌在内的实体肿瘤微环境中最常见的免疫细胞之一,与人类80%以上的恶性肿瘤的不良预后密切相关。越来越多的证据表明,TAMs在口腔癌发生和进展中具有重要功能。本研究基于国内外最新研究进展,系统综述TAMs在口腔鳞状细胞癌(oral squamous cell carcinoma,OSCC)微环境中的表型特征、临床病理关联及其分子调控机制,重点围绕其促肿瘤发生发展的关键信号通路及免疫逃逸机制展开深入探讨,旨在系统构建靶向TAMs治疗策略的理论框架,为临床转化研究提供科学依据。 展开更多
关键词 口腔癌 肿瘤相关的巨噬细胞 临床意义
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Fem-1同系物C通过调节ELAVL1/OPA1轴介导的线粒体融合促进乳腺癌进展的机制研究 认领 引用
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作者 樊艳 栗粟 +3 位作者 田天 杨萌萌 张璐璐 赵素贞 《中国肿瘤临床》 CAS CSCD 北大核心 2025年第10期487-493,共7页
目的:探讨Fem-1同系物C(Fem-1 homolog C,FEM1C)对乳腺癌的影响及其潜在调节机制。方法:通过qPCR检测乳腺癌组织和细胞系中FEM1C的表达水平。利用在线数据库预测FEM1C与ELAVL1蛋白的结合,并通过CoIP分析进行验证;利用starBase数据库预测... 目的:探讨Fem-1同系物C(Fem-1 homolog C,FEM1C)对乳腺癌的影响及其潜在调节机制。方法:通过qPCR检测乳腺癌组织和细胞系中FEM1C的表达水平。利用在线数据库预测FEM1C与ELAVL1蛋白的结合,并通过CoIP分析进行验证;利用starBase数据库预测ELAVL1与OPA1 mRNA的结合,并通过RIP分析进行验证。采用FEM1C的shRNA(sh-FEM1C)和过表达载体(FEM1C)、ELAVL1的过表达载体(ELAVL1)、OPA1的过表达载体(OPA1)转染乳腺癌细胞MDA-MB-231,或用100μM的DRP1抑制剂Mdivi-1或OPA1抑制剂MYLS22处理MDA-MB-231细胞。用sh-FEM1C慢病毒载体注射裸鼠构建异种移植瘤模型,监测肿瘤生长。结果:乳腺癌组织中FEM1C表达显著上调(P0.05);MYLS22处理抑制OPA1表达,抵消FEM1C过表达对MDA-MB-231细胞的影响(P<0.01)。机制研究显示FEM1C与ELAVL1蛋白结合,并促进其表达(P<0.01);ELAVL1蛋白通过与OPA1 mRNA结合稳定其mRNA,上调OPA1蛋白水平(P<0.01)。过表达OPA1逆转了FEM1C沉默对乳腺癌细胞的影响(P<0.01)。体内结果显示,敲低FEM1C抑制体内肿瘤生长(P<0.01)。结论:FEM1C通过促进ELAVL1蛋白表达介导OPA1 mRNA稳定性,从而促进线粒体融合,抑制自噬,促进乳腺癌进展。 展开更多
关键词 乳腺癌 FEM1C ELAVL1 OPA1 线粒体融合
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O-GlcNAcylation通过调节Rack1蛋白稳定性参与SHH型髓母细胞瘤的形成 认领 引用
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作者 罗静雅 高堂清 +1 位作者 杨檬檬 杨海红 《中国肿瘤临床》 CAS CSCD 北大核心 2025年第2期55-63,共9页
目的:研究O-GlcNAcylation调节蛋白激酶C受体1(receptor for activated C kinase 1,Rack1)的稳定性在SHH型髓母细胞瘤(SHH type medulloblastoma,SHH-MB)形成中的功能作用。方法:选取中国人民解放军西部战区总医院临床肿瘤标本库中分子... 目的:研究O-GlcNAcylation调节蛋白激酶C受体1(receptor for activated C kinase 1,Rack1)的稳定性在SHH型髓母细胞瘤(SHH type medulloblastoma,SHH-MB)形成中的功能作用。方法:选取中国人民解放军西部战区总医院临床肿瘤标本库中分子分型所确定的SHH-MB肿瘤及癌旁组织,分析样本中Rack1和O-GlcNAcylation(O-Glc NAc)的表达水平差异。对于人源髓母细胞瘤细胞系Daoy使用糖基化转移酶(OGT)抑制剂(OSMI-1)和去糖基化转移酶(OGA)抑制剂(TM-G)进行处理,通过Cell Counting Kit-8(CCK-8)法和免疫荧光染色检测肿瘤细胞增殖能力。采用O-Glc NAc酶标记系统、免疫共沉淀(Co-IP)和Western blot法判断Rack1有无发生O-Glc NAc,而后通过环己酰亚胺(CHX)实验和泛素化修饰实验证实O-GlcNAcylation对Rack1蛋白水平的影响。构建敲低Rack1的髓母细胞瘤模型,通过Cell Counting Kit-8(CCK-8)法、免疫荧光染色和划痕实验检测肿瘤细胞增殖能力。同时通过在免疫缺陷型小鼠进行异种原位肿瘤移植进行验证,在所得组织样本中(sh-NC和shRack1)使用Western blot检测下游SHH信号通路变化。结果:Rack1和O-GlcNAcylation在SHH-MB中表达水平显著增高,且Rack1表达水平和患者生存率呈负相关关系。对Daoy细胞系使用OSMI-1、TM-G处理后,发现O-Glc NAc能明显促进Daoy细胞增殖,而抑制细胞O-GlcNAc则抑制细胞增殖。分子实验证实Rack1蛋白O-GlcNAcylation可以调节其蛋白稳定性,进而促进肿瘤细胞增殖。在Daoy细胞系敲低Rack1表达,其细胞增殖能力明显低于对照组;在动物水平方面,相较于对照组,Rack1蛋白敲低的肿瘤组织增殖受到显著抑制。并且Rack1可通过调节SHH信号通路参与SHH-MB形成。结论:O-GlcNAcylation可通过调节Rack1蛋白的稳定性进而参与SHH-MB形成。 展开更多
关键词 Rack1 O-GlcNAcylation 细胞增殖 SHH-MB
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M1/M2型巨噬细胞影响口腔鳞癌进展的功能研究 认领 引用
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作者 徐潇奕 王斌 +1 位作者 杨檬檬 沈军 《中国肿瘤临床》 CAS CSCD 北大核心 2025年第7期325-330,共6页
目的:探索M1/M2型巨噬细胞对口腔鳞状上皮细胞癌(oral squamous cell carcinoma,OSCC)进展的调控及可能机制,以期为OSCC预后判断及生物治疗靶向提供可能方向。方法:检测M1/M2型巨噬细胞对SCC-15细胞增殖、迁移、侵袭、凋亡的作用;免疫... 目的:探索M1/M2型巨噬细胞对口腔鳞状上皮细胞癌(oral squamous cell carcinoma,OSCC)进展的调控及可能机制,以期为OSCC预后判断及生物治疗靶向提供可能方向。方法:检测M1/M2型巨噬细胞对SCC-15细胞增殖、迁移、侵袭、凋亡的作用;免疫组织化学染色方法检测人OSCC组织芯片中CD68及M2型巨噬细胞标记蛋白的表达情况,分析其与临床病理特征之间的关系。结果:M1型巨噬细胞促进SCC-15细胞的凋亡,抑制其增殖、迁移及侵袭能力,M2型巨噬细胞则作用相反;肿瘤相关巨噬细胞在OSCC中浸润密度,与肿瘤是否有淋巴结转移呈正相关,差异具有统计学意义(P<0.05)。结论:M1型巨噬细胞抑制OSCC进展,M2型巨噬细胞则促进OSCC进展。 展开更多
关键词 口腔鳞状上皮细胞癌 肿瘤相关巨噬细胞 M1型巨噬细胞 M2型巨噬细胞
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Formation of Face‑Centered Cubic Phase in Ti35 Alloy Under In Situ Heating Transmission Electron Microscopy 认领 引用
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作者 Jianan Hu Mengmeng Yang +9 位作者 Wenlong Xiao Hao Wang Dehai Ping Chengze Liu Shewei Xin Songquan Wu Kai Zhang Yi Yang Lai‑Chang Zhang Aijun Huang 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2023年第3期486-494,共9页
A thermally induced hexagonal close-packed(HCP)to face-centered cubic(FCC)phase transition was investigated in anα-type Ti35 alloy with twinned structure by in situ heating transmission electron microscopy(TEM)and ab... A thermally induced hexagonal close-packed(HCP)to face-centered cubic(FCC)phase transition was investigated in anα-type Ti35 alloy with twinned structure by in situ heating transmission electron microscopy(TEM)and ab initio calculations.TEM observations indicated that the HCP to FCC phase transition occurred both within matrixwin and at the twin boundaries in the thinner region of the TEM film,and the FCC-Ti precipitated as plates within the matrixwin,while as equiaxed cells at twin boundaries.The crystallographic orientation relationship between HCP-Ti and FCC-Ti can be described as:{111}FCC//{0002}HCP andFCC//HCP.The HCP to FCC phase transition was accomplished by forming an intermediate state with a BB stacking sequence through the slip of partial dislocations.The formation of such FCC-Ti may be related to the thermal stress and temperature.Ab initio calculations showed that the formation of FCC-Ti may also be related to the contamination of interstitial atoms such as oxygen. 展开更多
关键词 In situ heating TEM FCC titanium Phase transition Ab initio calculation
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Severe disseminated intravascular coagulation complicated by acute renal failure during pregnancy 认领 引用
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作者 Yuqun Pu Jingping Zhu +2 位作者 Baihui Zhao Mengmeng Yang Qiong Luo 《World Journal of Emergency Medicine》 SCIE CAS CSCD 2023年第5期411-413,共3页
Disseminated intravascular coagulation (DIC)is a clinical syndrome caused by various etiologies and characterized by systemic activation of blood coagulation,leading to vessel thrombosis,organ dysfunction,and severe b... Disseminated intravascular coagulation (DIC)is a clinical syndrome caused by various etiologies and characterized by systemic activation of blood coagulation,leading to vessel thrombosis,organ dysfunction,and severe bleeding.[1]DIC represents a life-threatening condition that is the endpoint of uncontrolled systemic activation of the disease.Once it enters the stage of malignant DIC,the patient’s death becomes unavoidable.DIC always occurs as a secondary disorder and is commonly associated with postpartum hemorrhage,followed by hypertensive disorders,acute fatty liver of pregnancy,sepsis,and amniotic fluid embolism (AFE).[2]In clinical obstetrics,DIC often occurs during delivery or postpartum. 展开更多
关键词 pregnancy death DIC
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Highly anisotropic dual-heterostructure for multifunctional solarblind polarization-sensitive photodetectors 认领 引用
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作者 Qian Li Kun Ye +15 位作者 Mengmeng Yang Junxin Yan Tianle Zeng Qi Gao Yang Lv Yihan Gao Qingqing Yang Ruiqi Chen Yang Gao Zhaofei Sun Bo He Peng Xiao Wei Ye Anmin Nie Zhongyuan Liu Shouguo Wang 《Nano Research》 SCIE EI CSCD 2026年第3期851-860,共10页
Solar-blind ultraviolet photodetectors based on twodimensional van der Waals heterostructures have emerged as indispensable components for high-precision warning systems,environmental monitoring systems,information en... Solar-blind ultraviolet photodetectors based on twodimensional van der Waals heterostructures have emerged as indispensable components for high-precision warning systems,environmental monitoring systems,information encryption,and optical communication.However,the widespread use of solar-blind ultraviolet photodetectors is still constrained by the simultaneous lack of ultralow dark current,high specific photoresponse,sub-microsecond response time,and intrinsic polarization-sensitive photoresponse.Herein,a dualheterostructure field-effect transistor composed of the ultra-wide bandgap semiconductor GaPS4and WS2nanosheets was fabricated.The WS2/GaPS4dual-heterostructure devices exhibit high spike barriers at the dual-heterostructure interface owing to type-I band alignment,which can completely suppress charge transfer.Furthermore,the device exhibits an outstanding performance in the solar-blind ultraviolet(UV)region,stemming from the fast carrier separation and transfer enabled by the built-in electric fields at the dual-heterostructure interface.Critically,the two-fold rotational symmetry(C2)of GaPS4breaks the original three-fold rotational symmetry(C3)of WS2to simultaneously achieve unexpected linearly polarized Raman and anisotropic absorptions at the heterostructure interface.Moreover,the WS2/GaPS4dual-heterostructure photodetector possesses high-resolution polarization imaging capability under 255 nm illumination owing to dichroic ratios as high as 3.4.These results suggest that the novel two-dimensional dualheterostructure provides a foundation for developing next-generation polarization-sensitive multifunctional photodetectors. 展开更多
关键词 WS2/GaPS4dual-heterostructure type-I band alignment anisotropic optical response solar-blind ultraviolet photodetector high-resolution polarization imaging
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Anomalous-Hall Néel textures in altermagnetic materials 认领 引用
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作者 Rui-Chun Xiao Hui Li +7 位作者 Hui Han Wei Gan Mengmeng Yang Ding-Fu Shao Shu-Hui Zhang Yang Gao Mingliang Tian Jianhui Zhou 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CSCD 2026年第1期272-279,共8页
Recently,the altermagnets,a new kind of collinear antiferromagnet with nearly zero net magnetization and momentumdependent spin-splitting of bands,have sparked great interest.Despite simple magnetic structures,these a... Recently,the altermagnets,a new kind of collinear antiferromagnet with nearly zero net magnetization and momentumdependent spin-splitting of bands,have sparked great interest.Despite simple magnetic structures,these altermagnets exhibit intriguing and intricate dependence of anomalous Hall effect(AHE)on the Néel vector,in contrast to the conventional perpendicular configuration of Hall current with magnetization in ferromagnets.However,the fundamental relationship between the AHE and the Néel vector remains largely elusive.Here,we reveal all the unconventional anomalous Hall textures in the Néel vector space,dubbed anomalous-Hall Néel textures(AHNTs)for altermagnets.Specifically,we identify 10 types across four categories of AHNTs for all altermagnets.Notably,we find that AHNTs resemble the known spin textures in momentum space and further reveal their symmetry origin.Meanwhile,we examine our key discoveries in prototypical altermagnets.Our work offers a thorough understanding of AHE in altermagnets and a complete and pictorial classification of altermagnets based on the geometry of response functions. 展开更多
关键词 anomalous Hall effect altermagnets Néel vector spin texture
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Drought-driven declines in water-use efficiency reshape carbon dynamics of a subtropical forest 认领 引用 被引量：2
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作者 Brian Njoroge Mwangi Wyckliffe Ayoma +16 位作者 Yuelin Li L.Adrian Bruijnzeel Juxiu Liu Jun Zhang Dennis Otieno Lindsay Sikuku Mengmeng Yang Vincent Suba Oluoch Emily Achieng Iheme Okechukwu Ayesha Akter Sohel Rana Guowei Chu Qianmei Zhang Xuli Tang Ze Meng Deqiang Zhang 《Ecological Processes》 SCIE EI CSCD 2025年第4期59-74,共16页
Background Subtropical forests play a critical role in global carbon cycling but are highly sensitive to climate-d riven precipitation and temperature variability.At China's Dinghushan Biosphere Reserve,observed w... Background Subtropical forests play a critical role in global carbon cycling but are highly sensitive to climate-d riven precipitation and temperature variability.At China's Dinghushan Biosphere Reserve,observed warming(+1.5℃since 2002)and precipitation declines(8.2±1.3 mm/yr)exceed global subtropical averages,yet their combined effects on water-use efficiency(WUE)and carbon exchange remain poorly quantified.Methods Using 21 years of eddy covariance and meteorological data(2002-2022),we analyzed WUE(defined as NEE/ET;g C kg-1H2O)responses to drought events classified via the standardized precipitation index(SPI).Results The reserve experienced increasing drought frequency,with 7 extreme droughts(SPI≤-2.0)post-2010versus 2 pre-2010.Soil moisture extremes(<0.15 m3m-3)reduced WUE by 2.35 g C kg-1H2O.Carbon fluxes showed diffe rential sensitivity:ecosystem respiration(RE)declined most sharply(-71.9×10-5g C m-2s-1)during extreme droughts,while gross primary productivity(GPP)exhibited non-linear reductions below a 1,200 mm yr-1precipitation threshold.Late-successional forests maintained 0.94 g C kg-1H2O higher WUE than mid-successional stands during droughts,linked to deeper rooting systems(120±15 cm).The identified 3-year recovery lag suggests targeted reforestation during wet intervals(SPI≥1.5)could enhance resilience.Conclusion By establishing quantitative drought thresholds and revealing hydraulic versus non-hydraulic limitations,our findings provide actionable strategies for subtropical forest conservation under climate change. 展开更多
关键词 Climate change Water-use efficiency(WUE) Carbon flux Standardized precipitation index(SPI) Subtropical forest Drought resilience Eddy covariance Ecosystem respiration
Review and challenge:High definition map technology for intelligent connected vehicle 认领 引用 被引量：1
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作者 Mengmeng Yang Kun Jiang +7 位作者 Benny Wijaya Tuopu Wen Jinyu Miao Jin Huang Cao Zhong Wei Zhang Huixian Chen Diange Yang 《Fundamental Research》 CSCD 2025年第6期2765-2783,共19页
An accurate and up-to-date High Definition(HD)Map is critical for an intelligent vehicle to drive safely and effectively.Although research in this area is growing,there is still a lack of clarity in defining HD maps f... An accurate and up-to-date High Definition(HD)Map is critical for an intelligent vehicle to drive safely and effectively.Although research in this area is growing,there is still a lack of clarity in defining HD maps for intelligent connected vehicles(ICVs).This gap in knowledge is particularly challenging for new researchers,who often struggle to find suitable HD map datasets due to a lack of comprehensive reviews on current HD map products,as far as the authors’knowledge.Thus,this article aims to bridge this gap by providing a thorough analysis of the core ideas of HD map technology.Initially,this paper presents the brief history of HD map.Following this,it describes the taxonomy and ontology of HD maps,complete with the HD map contents and existing standards.An insight into the mapping process is also given by discussing the algorithms used for creating and updating HD maps.This manuscript also lists current HD map products and the open-sourced dataset available for interested researchers in this space.As part of this study,the authors also describe common applications of HAD maps in ICVs.Finally,the article highlight the key research challenges and potential future directions in this field.Addressing these challenges is vital for the advancement and integration of HD maps for ICVs. 展开更多
关键词 High definition(HD)map Highly automated driving(HAD)map Digital map Intelligent connected vehicle(ICVs) Autonomous driving
PriorFusion:Unified integration of priors for robust road perception in autonomous driving 认领 引用 被引量：1
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作者 Xuewei Tang Mengmeng Yang +7 位作者 Tuopu Wen Peijin Jia Le Cui Mingshan Luo Kehua Sheng Bo Zhang Kun Jiang Diange Yang 《Communications in Transportation Research》 SCIE EI CSCD 2025年第1期906-921,共16页
With the growing interest in autonomous driving,there is an increasing demand for accurate and reliable road perception technologies.In complex environments without high-definition map support,autonomous vehicles must... With the growing interest in autonomous driving,there is an increasing demand for accurate and reliable road perception technologies.In complex environments without high-definition map support,autonomous vehicles must independently interpret their surroundings to ensure safe and robust decision-making.However,these scenarios pose significant challenges due to the large number,complex geometries,and frequent occlusions of road elements.A key limitation of existing approaches lies in their insufficient exploitation of the structured priors inherently present in road elements,resulting in irregular,inaccurate predictions.To address this,we propose PriorFusion,a unified framework that effectively integrates semantic,geometric,and generative priors to enhance road element perception.We introduce an instance-aware attention mechanism guided by shape-prior features,then construct a data-driven shape template space that encodes low-dimensional representations of road elements,enabling clustering to generate anchor points as reference priors.We design a diffusion-based framework that leverages these prior anchors to generate accurate and complete predictions.Experiments on large-scale autonomous driving datasets demonstrate that our method significantly improves perception accuracy,particularly under challenging conditions.Visualization results further confirm that our approach produces more accurate,regular,and coherent predictions of road elements. 展开更多
关键词 Autonomous driving Road scene perception Diffusion model Online mapping
SGPLane:Efficient lane detection via sampled grid points for autonomous driving 认领 引用
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作者 Xuewei Tang Mengmeng Yang +3 位作者 Kun Jiang Tuopu Wen Benny Wijaya Diange Yang 《Fundamental Research》 CSCD 2025年第4期1659-1667,共9页
Lane detection is one of the critical tasks for autonomous driving.Earlier works revolved around semantic segmentation and object detection with a special program for lanes.However,most methods still suffer from unsta... Lane detection is one of the critical tasks for autonomous driving.Earlier works revolved around semantic segmentation and object detection with a special program for lanes.However,most methods still suffer from unstable post-processing algorithms which leads to a gap between camera input and downstream applications.In this paper,we propose a novel detection presentation form for lanes and design a simple network without any complicated post-process.Specifically,we use sampled gird points to express lane lines and construct a network for the special lane format,which is called SGPLane.Therefore,the network learns a regression branch and a confidence branch to realize end-to-end lane detection by setting the threshold confidence value.Our model is validated on the typical dataset and real-world driving scenes.Experiments on lane detection benchmarks show that our method outperforms previous methods with accuracy score of 96.845%on Tusimple dataset with high FPS and 76.85%on our real-world dataset. 展开更多
关键词 Autonomous driving Autonomous vehicle navigation Vehicle perception Road scene understanding Lane detection
Photocatalytic nitrogen reduction to ammonia:Insights into the role of defect engineering in photocatalysts 认领 引用 被引量：20
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作者 Huidong Shen Mengmeng Yang +3 位作者 Leiduan Hao Jinrui Wang Jennifer Strunk Zhenyu Sun 《Nano Research》 SCIE EI CSCD 2022年第4期2773-2809,共37页
Engineering of defects in semiconductors provides an effective protocol for improving photocatalytic N2 conversion efficiency.This review focuses on the state-of-the-art progress in defect engineering of photocatal... Engineering of defects in semiconductors provides an effective protocol for improving photocatalytic N2 conversion efficiency.This review focuses on the state-of-the-art progress in defect engineering of photocatalysts for the N2 reduction toward ammonia.The basic principles and mechanisms of thermal catalyzed and photon-induced N2 reduction are first concisely recapped,including relevant properties of the N2 molecule,reaction pathways,and NH3 quantification methods.Subsequently,defect classification,synthesis strategies,and identification techniques are compendiously summarized.Advances of in situ characterization techniques for monitoring defect state during the N2 reduction process are also described.Especially,various surface defect strategies and their critical roles in improving the N2 photoreduction performance are highlighted,including surface vacancies(i.e.,anionic vacancies and cationic vacancies),heteroatom doping(i.e.,metal element doping and nonmetal element doping),and atomically defined surface sites.Finally,future opportunities and challenges as well as perspectives on further development of defect-engineered photocatalysts for the nitrogen reduction to ammonia are presented.It is expected that this review can provide a profound guidance for more specialized design of defect-engineered catalysts with high activity and stability for nitrogen photochemical fixation. 展开更多
关键词 photocatalysis nitrogen reduction ammonia synthesis defect engineering
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A circular single-stranded DNA mycovirus infects plants and confers broad-spectrum fungal resistance 认领 引用 被引量：2
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作者 Xianhong Wang Ioly Kotta-Loizou +9 位作者 Robert H.A.Coutts Huifang Deng Zhenhao Han Ni Hong Karim Shafik Liping Wang Yashuang Guo Mengmeng Yang Wenxing Xu Guoping Wang 《Molecular Plant》 SCIE CSCD 2024年第6期955-971,共17页
Circular single-stranded DNA(ssDNA)viruses have been rarely found in fungi,and the evolutionary and ecological relationships among ssDNA viruses infecting fungi and other organisms remain unclear.In this study,a novel... Circular single-stranded DNA(ssDNA)viruses have been rarely found in fungi,and the evolutionary and ecological relationships among ssDNA viruses infecting fungi and other organisms remain unclear.In this study,a novel circular ssDNA virus,tentatively named Diaporthe sojae circular DNA virus 1(DsCDV1),was identified in the phytopathogenic fungus Diaporthe sojae isolated from pear trees.DsCDV1 has a monopartite genome(3185 nt in size)encapsidated in isometric virions(21-26 nm in diameter).The genome comprises seven putative open reading frames encoding a discrete replicase(Rep)split by an intergenic region,a putative capsid protein(CP),several proteins of unknown function(P1-P4),and a long intergenic region.Notably,the two split parts of DsCDV1 Rep share high identities with the Reps of Geminiviridae and Genomoviridae,respectively,indicating an evolutionary linkage with both families.Phylogenetic analysis based on Rep or CP sequences placed DsCDV1 in a unique cluster,supporting the establishment of a new family,tentatively named Gegemycoviridae,intermediate to both families.DsCDV1 significantly attenuates fungal growth and nearly erases fungal virulence when transfected into the host fungus.Remarkably,DsCDV1 can systematically infect tobacco and pear seedlings,providing broad-spectrum resistance to fungal diseases.Subcellular localization analysis revealed that DsCDV1 P3 is systematically localized in the plasmodesmata,while its expression in trans-complementation experiments could restore systematic infection of a movement-deficient plant virus,suggesting that P3 is a movement protein.DsCDV1 exhibits unique molecular and biological traits not observed in other ssDNA viruses,serving as a link between fungal and plant ssDNA viruses and presenting an evolutionary connection between ssDNA viruses and fungi.These findings contribute to expanding our understanding of ssDNA virus diversity and evolution,offering potential biocontrol applications for managing crucial plant diseases. 展开更多
关键词 circular single-stranded DNA virus mycovirus virus evolution Genomoviridae Gegemycoviridae Diaporthe sojae circular DNA virus 1
Crowdsourced Road Semantics Mapping Based on Pixel-Wise Confidence Level 认领 引用 被引量：3
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作者 Benny Wijaya Kun Jiang +3 位作者 Mengmeng Yang Tuopu Wen Xuewei Tang Diange Yang 《Automotive Innovation》 EI CSCD 2022年第1期43-56,共14页
High-definition map has become a vital cornerstone in the navigation of autonomous vehicles in complex traffic scenarios.Thus,the construction of high-definition maps has become crucial.Traditional methods relying on ... High-definition map has become a vital cornerstone in the navigation of autonomous vehicles in complex traffic scenarios.Thus,the construction of high-definition maps has become crucial.Traditional methods relying on expensive mapping vehicles equipped with high-end sensor equipment are not suitable for mass map construction because of the limitation imposed by its high cost.Hence,this paper proposes a new method to create a high-definition road semantics map using multi-vehicle sensor data.The proposed method implements crowdsourced point-based visual SLAM to align and combine the local maps derived by multiple vehicles.This allows users to modify the extraction process by using a more sophisticated neural network,thus achieving a more accurate detection result when compared with traditional binarization method.The resulting map consists of road marking points suitable for autonomous vehicle navigation and path-planning tasks.Finally,the method is evaluated on the real-world KAIST urban dataset and Shougang dataset to demonstrate the level of detail and accuracy of the proposed map with 0.369 m in mapping errors in ideal condition. 展开更多
关键词 Crowdsourced mapping Map fusion SLAM Semantic mapping
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