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Biomaterial amendments improve nutrient use efficiency and plant growth

Frontiers of Agricultural Science and Engineering 2025年第01期 81-103页

作者： Ying LIU Natasha MANZOOR Miao HAN Kun ZHU Gang WANG Department of Soil and Water Sciences China Agricultural University national Black Soil and Agriculture research China Agricultural University

The achievement of global food security faces exceptional challenges due to the rapid population growth, land degradation and climate change. Current farming practices, including mineral fertilizers and synthetic pesticides, alone are becoming insufficient to ensure long-term food security and ecosystem sustainability. The lack of robustness and reliability of conventional approaches warrants efforts to develop novel alternative strategies. Bio-based management strategies offer promising alternatives for improving soil health and food productivity. For example, microbial inoculants can enhance nutrient availability, crop production and stress resistance while also remediating contaminated soils. Nanobiotechnology is a promising strategy that has great potential for mitigating biotic and abiotic stresses on plant toward sustainable agriculture. Biochar(including modified biochar) serves as an effective microbial carrier, improving nutrient availability and plant growth. Also,biochar amendments have been demonstrated to have great potential facilitating soil organic carbon sequestration and mitigating greenhouse gas emissions and therefore contribute to climate change mitigation efforts. This review examines the integration of microbial inoculants, nano-fertilizers and biochar, which demonstrates as a promising strategy to enhance soil health,crop productivity and environmental sustainability. However, overcoming challenges related to their mass production, application and potential risks remains crucial. Future research should focus on optimizing these bioamendment strategies, evaluating their economic viability and developing robust regulatory frameworks to ensure safe and effective agricultural implementation.

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Auxiliary-field Monte Carlo method for frustrated spin systems

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Chinese Physics B 2025年第2期34卷 118-122页

作者： Ning Cai Yuan Gao Wei Li Yang Qi State key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghai 200433China School of Physics Beihang UniversityBeijing 100191China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Peng Huanwu Collaborative Center for research and Education Beihang UniversityBeijing 100191China

We extend a semiclassical numerical method, bosonic auxiliary-field Monte Carlo, to quantum spin systems. This method breaks the lattice into clusters, solves each cluster precisely and couples them with classical auxiliary fields through classical Monte Carlo simulation. We test the method with antiferromagnetic spin models in one-dimensional chains, square lattices and triangular lattices, and obtain reasonable results at finite temperatures. This algorithm builds a bridge between classical Monte Carlo method and quantum methods. The algorithm can be improved with either progress in classical Monte Carlo sampling or the development of quantum solvers, and can also be further applied to systems with different lattices or interactions.

关键词： Monte Carlo quantum many-body system frustrated magnets

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Auxiliary-field Monte Carlo method for frustrated spin systems

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Chinese Physics B 2025年第02期 121-126页

作者：蔡凝高源李伟戚扬 State key Laboratory of Surface Physics and Department of Physics Fudan University School of Physics Beihang University Institute of Theoretical Physics Chinese Academy of Sciences Peng Huanwu Collaborative Center for research and Education Beihang University

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High-efficiency Fe（Ⅲ）-doped ultrathin VO2 nanobelts boosted peroxydisulfate activation for actual antibiotics photodegradation

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Chinese Chemical Letters 2025年第03期 227-233页

作者： Shukun Le Peng Wang Yuhao Liu Mutao Xu Quansheng Liu Qijie Jin Jie Miao Chengzhang Zhu Haitao Xu Inner Mongolia key Laboratory of High-Value Functional Utilization of Low Rank Carbon Resources Chemical Engineering CollegeInner Mongolia University of Technology School of Environmental Science and Engineering Nanjing Tech University key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science MOEQingdao University of Science and Technology

It has been challenging for Fe（Ⅲ） regeneration in Fe-based photocatalysts for continuous peroxydisulfate（PDS） activation due to the lower ability to reduce Fe（Ⅲ）.In this work,Fe-doped ultrathin VO2（Fe-VO2）nanobelts were synthesized for purifying metronidazole （MNZ） via PDS *** an efficient Fentonlike catalyst for PDS activation,2 wt%Fe-doped VO2can remove 98%of MNZ within 40 min and exhibits impressive *** synergistic effect of Fe-VO2and Fe（Ⅲ） activated PDS boosted the photocatalytic ***,SO4·-,h+,O2·-,1O2,and·OH were the main reactive *** effects of initial MNZ concentration,Fe-VO2,PDS dosage,and various anions/cations on MNZ removal by the Fe-VO2/PDS/Vis system were *** intermediates of MNZ degradation and possible pathways were determined by density function theory （DFT） calculations and *** study provided a sustainable technology using Fe-doped ultrathin VO2nanobelts for photocatalytic PDS activation and decontamination of pharmaceutical wastewater.

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通过旋锻和时效处理获得高强度的挤压态Mg-Bi-Ca三元合金(英文)

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Transactions of Nonferrous Metals Society of China 2025年

作者：陈阳何俊杰杨锟黄秋艳郝惠军周逸伦王伟奇熊凯毛勇王庆航云南大学材料与能源学院材料基因工程研究中心中国科学院金属研究所扬州大学机械工程学院

本文通过热挤压、室温旋锻及后续时效处理制备出屈服强度为～ 358.1 MPa的一种Mg-3.2Bi-0.8Ca (BX31， wt.%)三元合金。挤压态合金显微组织晶粒细小（～2 μm）、呈现非基面织构且存在少量第二相。在室温旋锻过程中发生连续动态再结晶... 详细信息

本文通过热挤压、室温旋锻及后续时效处理制备出屈服强度为～ 358.1 MPa的一种Mg-3.2Bi-0.8Ca (BX31， wt.%)三元合金。挤压态合金显微组织晶粒细小（～2 μm）、呈现非基面织构且存在少量第二相。在室温旋锻过程中发生连续动态再结晶，使得合金的平均晶粒尺寸减小至～ 1 μm。另外，在晶粒内部存在大量的残余位错堆积，且在位错附近观察到纳米析出相。合金在448 K时效35 min后出现硬度峰值，晶粒尺寸未发生变化，而残余位错的密度略有降低，位错堆积区域出现大量纳米析出相。晶界强化、位错强化和析出相强化是合金在时效后强度增加的主要因素。

关键词： Mg-Bi-Ca合金旋锻变形时效处理连续动态再结晶析出相

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Honeycomb-like polyaniline for flexible and folding all-solid-state supercapacitors

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Frontiers of Materials Science 2019年第2期13卷 133-144页

作者： Ge JU Muhammad Arif KHAN Huiwen ZHENG Zhongxun AN Mingxia WU Hongbin ZHAO Jiaqiang XU Lei ZHANG Salma BILAL Jiujun ZHANG NEST Lab Department of Chemistry College of Sciences Shanghai University Shanghai 200444China School of Materials Science and Engineering Shanghai University Shanghai 200444 China national Engineering research Center for Supercapacitor for Vehicles Shanghai AOWEI Technology Development Co. Ltd. Shanghai 201203 China Institute for Fuel Cell Innovation National Research Council of Canada 4250 Wesbrook Mall Vancouver Canada national Centre of Excellence in Physical Chemistry University of Peshawar 25120 Peshawar Pakistan Institute of Sustainable Energy Shanghai University Shanghai 200444 China

Porous polyaniline (PANI) was prepared through an efficient and costeffective method by polymerization of aniline in the NaCl solution at room temperature. The resulting PANI provided large surface area due to its highly porous structure and the intercrossed nanorod, resulting in good electrochemical performance. The porous PANI electrodes showed a high specific capacitance of 480 F·g^-1, 3 times greater than that of PANI without using the NaCl solution. We also make chemically crosslinked hydrogel film for hydrogel polymer electrolyte as well as the flexible supercapacitors (SCs) with PANI. The specific capacitance of the device was 234 F·g^-1 at the current density of 1 A·g^-1. The energy density of the device could reach as high as 75 W·h·kg^-1 while the power density was 0.5 kW·kg^-1, indicating that PANI be a promising material in flexible SCs.

关键词： PANI honeycomb-like nanostructure all-solid-state SC electrochemical property

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Toughening effects of Mo and Nb addition on impact toughness and crack resistance of titanium alloys

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Journal of Materials Science & Technology 2021年第20期79卷 147-164页

作者： Shixing Huang Qinyang Zhao Yongqing Zhao Cheng Lin Cong Wu Weiju Jia Chengliang Mao Vincent Ji School of Materials Science and Engineering Northeastern UniversityShenyangLiaoning110819China School of Material Science and Engineering Chang’an UniversityXi’anShaanxi710064China Northwest Institute for Nonferrous Metal research Xi’anShaanxi710016China School of Mechanical Engineering Liaoning Shihua UniversityFushunLiaoning113001China ICMMO/SP2M UMR CNRS 8182UniversitéParis-SaclayOrsay91405France

Ti-6Al,Ti-6Al-2Mo and Ti-6Al-3Nb alloys were prepared to investigate the toughening effects ofβstabilizers Mo and Nb on impact toughness and crack resistance of titanium *** Charpy impact tests showed that the total impact absorbed energy of Ti-6Al-2Mo and Ti-6Al-3Nb(∼64 J)were two times higher than that of Ti-6Al(∼30 J),indicating the higher impact toughness of Ti-6Al-2Mo and Ti-6Al-3Nb *** of load-displacement curves revealed the similar crack initiation energy of Ti-6Al,Ti-6Al-2Mo and Ti-6Al-3Nb(15.4 J,16.1 J and 15.0 J,respectively).However,the higher crack propagation energy of Ti-6Al-2Mo and Ti-6Al-3Nb(46.7 J and 48.3 J,respectively)were about three times higher than that of Ti-6Al(14.4 J),indicating the stronger resistance to crack propagation in Ti-6Al-2Mo and ***-mortem analysis of impact samples demonstrated that the increased dislocation density and deformation twinning were mainly responsible for the stronger resistance to crack propagation in Ti-6Al-2Mo and *** to the invisibility of dislocation activation and deformation twinning during the Charpy impact process,a mathematical model has been proposed to evaluate the effects of Al,Mo and Nb elements on dislocation mobility based on the Yu Rui-huang electron *** of Mo and Nb elements significantly improved the dislocation mobility in Ti-6Al-2Mo and Ti-6Al-3Nb compared to that in Ti-6Al ***,more dislocations were activated in Ti-6Al-2Mo and Ti-6Al-3Nb which supplied the larger plastic deformation under impact loading.A dislocation-based model also has been proposed to interpret the nucleation and propagation of deformation twinning under the impact *** pileup atα/βinterfaces provided potential sites for nucleation of deformation twinning in Ti-6Al-2Mo and ***,deformation twinning facilitated the dislocation motion inαgrains with hard *** increased dislocation mobility and deformation

关键词： Titanium alloy Impact toughness Crack resistance Dislocation mobility Deformation twinning

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Mechanism of wavy vortex and sign laws in flow past a bluff body:vortex-induced vortex

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Acta Mechanica Sinica 2019年第1期35卷 1-14,I0001页

作者： L.M.Lin S.Y.Shi X.F.Zhong Y.X.Wu key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China

As reported in a previous work by Lin et al.(Acta Meeh Sin, 2018. https://***/10.1007/s 10409-018-0758-z), an interesting phenomenon was discovered based on the analysis of wavy vortex and vorticity distribution in the shear layers and near wake of a peak-perforated conic shroud, and two sign laws were summarized. In the present paper, the theory of a vortex-induced vortex is introduced to explore mechanisms in a wavy vortex and applicable sign laws for uniform and incompressible flow past a fixed bluff body. Based on the analysis of the nearest-wall How, two vortex-induced models for streamwise and vertical vortex pairs, respectively, are proposed under two boundary cases, denoting the induced vorticity introduced or distributed on and near the walls. As a result, the first sign law, for only streamwise and vertical components of vorticity, and the second sign law, for three components of vorticity, are obtained under their own particular conditions. The first sign law reveals the intrinsic physical relationship between streamwise and vertical vorticities, independent of the distribution of spanwise vortices in the whole flow field. It is also confirmed that the spanwise vortices, as well as the shear layers and wake width, distributed wavily across the span, are attributed to the introduced streamwise or vertical vortices. The two sign laws for vorticity are independent of the disturbed spanwise wavelength and the Reynolds number. Through the analysis of flow past the conic shroud, the two sign laws are successfully used to summarize typical spacial distributions of vorticity in three flow regions: on and near the front cylinder surfaces, the separated shear layers and the near wake.

关键词： Wavy vortex Sign law Vortex-induced vortex Wake Bluff body

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Predicting lean blow-off of bluffbody stabilized flames based on Damkohler number

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Chinese Journal of Aeronautics 2019年第2期32卷 308-323页

作者： Zhonghao WANG Bin HU Aiming DENG Junhua ZHANG Qingjun ZHAO Institute of Engineering Thermophysics Chinese Academy of Sciences University of Chinese Academy of Sciences key Laboratory of Light-duty Gas-turbine Chinese Academy of Sciences

Lean Blow-Off(LBO) prediction is important to propulsion system design. In this paper,a hybrid method combining numerical simulation and Da(Damk?hler) model is proposed based on bluffbody stabilized flames. In the simulated reacting flow, Practical Reaction Zone(PRZ) is built based on OH radical concentration, and it is considered to be the critical zone that controls *** number is obtained based on the volume-averaged parameters of PRZ. The flow time scale(s_f)indicates the residence time of the fresh mixture flowing through the PRZ. It is obtained based on the characteristic length and volume-averaged axial velocity of the PRZ. The chemical time scale(s_c) indicates the shortest time needed to trigger the reaction of the mixture. It is obtained by commercial software CHEMKIN through monitoring the transient variation of the reactor temperature. The result shows that the average Da number under different LBO conditions is 1.135(the Da number under each LBO condition ranges from 0.673 to 1.351). This indicates that the flow time scale and chemical time scale are comparable. The combustion is in a critical state where LBO is easy to occur. With the increase of the fuel mass flow rate(the global fuel/air ratio increases from 0.004761 to 0.01095), s_f increases from 0.001268 s to 0.007249 s, and s_c decreases from 0.00124 s to0.00089 s. Accordingly, Da number increases from 1.023 to 8.145, which shows that the combustion becomes more stable. The above results show that the method proposed in the present study can properly predict the LBO limits of combustors, which provides important technical supports for combustor design and optimization.

关键词： Bluffbody stabilized flames Damkohler number Hybrid method LBO Time scales

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Inverse-opal structured TiO_(2) regulating electrodeposition behavior to enable stable lithium metal electrodes

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Green Energy & Environment 2023年第6期8卷 1664-1672页

作者： Xuewen Wu Shaolun Cui Minfei Fei Sheng Liu Xueping Gao Guoran Li Institute of New Energy Material Chemistry School of Materials Science and EngineeringRenewable Energy Conversion and Storage CenterNankai UniversityTianjin300350China Department of Materials Science and Metallurgy University of CambridgeCambridge CB30FSUK

Lithium metal anode is almost the ultimate choice for high-energy density rechargeable batteries, but its uneven electrochemical dissolution-deposition characteristics lead to poor cycle stability and lithium dendrites safety problems. The fundamental solution to the problems is to interfere electrodeposition process of lithium metal so that it can be carried out reversibly and stably. In this work, an inverse-opal structured TiO2membrane with a thickness of only ~1 μm is designed to regulate the electrodeposition behavior of lithium metal, in which the ordered channels homogenize mass transfer process, the anatase TiO_(2)walls of the ion channels reduce desolvation barrier of solvated lithium-ions, and the spherical cavities with a diameter of ~300 nm confine migration of the adsorbed lithium atoms during electrocrystallization to diminish overpotential of lithium. These systematic effects cover and essentially change the whole process of electrodeposition of lithium metal and eliminate the possibility of lithium dendrite formation. The as-obtained lithium metal electrode delivers a Coulombic efficiency of 99.86% in the 100th cycle, and maintains a low deposition overpotential of 0.01 V for 800 h.

关键词： Lithium metal anode Inverse-opal structure TiO2 Electrodeposition Lithium-sulfur battery

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