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Reduction of dinitrogen to ammonia on doped three-atom clusters Nb_(2)M(M=Sc to Cu & Y to Ag)

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Rare Metals 2024年第8期43卷 3810-3818页

作者： Ran Cheng Chao-nan cui Zhi-Xun Luo Beijing National Laboratory for Molecular Science(BNLMS) State Key Laboratory for Structural Chemistry of Unstable and Stable SpeciesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China

Catalytic reduction of dinitrogen to ammonia under mild conditions remains an attractive topic for the purpose of lowering energy ***-atom metal clusters have been proved an ideal model to explore highly efficient catalysts taking advantage of unique geometric/electronic structures and cooperative active *** a study of N2 activation and reduction on seventeen bimetallic Nb_2M(M=Sc to Cu,and Y to Ag) clusters was *** key processes for ammonia fixation(namely nitrogen activation,hydrogenation,and ammonia desorption) are fully studied,and three preferred systems(Nb_2Ni,Nb_2Rh and Nb_2Pd) are highlighted with outstanding catalytic *** d-σ and d-π~* orbital hybridizations between these metal clusters and N_(2) were demonstrated and the internal association with the N≡N bond activation was *** examining the ammonia synthesis on four chosen Nb_(2)M clusters(M=Fe,Ni,Rh and Pd),it can be elucidated that the distal pathway is more favorable than the alternative pathway in these *** work not only clarifies the N_(2) reduction on the bimetallic Nb_(2)M clusters,but also guides efficient bimetallic catalyst design.

关键词： Three-atom cluster catalysis Three-criteria strategy Nitrogen fixation Ammonia synthesis Theoretical calculations

Study on creep deformation and energy development of underground surrounding rock under four‐dimensional support

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Deep Underground Science and Engineering 2024年第1期3卷 25-38页

作者： Zhanguo Ma Junyu Sun Peng Gong Pengfei Yan nan cui Ruichong Zhang School of Mechanics and Civil Engineering China University of Mining and TechnologyXuzhouChina State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering China University of Mining and TechnologyXuzhouChina Department of Mining Engineering Colorado School of MinesGoldenUSA

There is an urgent need to develop optimal solutions for deformation control of deep high‐stress roadways,one of the critical problems in underground *** previously proposed four‐dimensional support(hereinafter 4D support),as a new support technology,can set the roadway surrounding rock under three‐dimensional pressure in the new balanced structure,and prevent instability of surrounding rock in underground ***,the influence of roadway depth and creep deformation on the surrounding rock supported by 4D support is still *** study investigated the influence of roadway depth and creep deformation time on the instability of surrounding rock by analyzing the energy *** elastic strain energy was analyzed using the program redeveloped in *** numerical simulation results indicate that the combined support mode of 4D roof supports and conventional side supports is highly applicable to the stability control of surrounding rock with a roadway depth exceeding 520 *** the increase of roadway depth,4D support can effectively restrain the area and depth of plastic deformation in the surrounding ***,4D support limits the accumulation range and rate of elastic strain energy as the creep deformation time increases.4D support can effectively reduce the plastic deformation of roadway surrounding rock and maintain the stability for a long deformation period of 6 *** confirmed by in situ monitoring results,4D support is more effective for the long‐term stability control of surrounding rock than conventional support.

关键词： coal mines elastic strain energy four‐dimensional support large roadway depth long‐term stability control plastic deformation surrounding rock

Arbuscular mycorrhizal fungi reduce ammonia emissions under different land-use types in agro-pastoral areas

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Pedosphere 2024年第2期34卷 497-507页

作者： Huaisong WANG Rui GUO Yibo TIAN nan cui Xinxin WANG Lei WANG Zhongbao YANG Shuying LI Jixun GUO Lianxuan SHI Tao ZHANG Institute of Grassland Science Northeast Normal UniversityKey Laboratory of Vegetation EcologyMinistry of EducationJilin Songnen Grassland Ecosystem National Observation and Research StationChangchun 130024China Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural SciencesKey Laboratory of Dryland AgricultureMinistry of AgricultureBeijing 100081China Mountainous Area Research Institute of Hebei Province Hebei Agricultural UniversityBaoding 071001China College of Agronomy Liaocheng UniversityLiaocheng 252059China The Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationSchool of Life ScienceShandong UniversityQingdao 266237China Forestry and Grassland Bureau of Aohan Banner Chifeng 024005China

Ammonia(NH3)emissions,the most important nitrogen(N)loss form,always induce a series of environmental problems such as increased frequency of regional haze pollution,accelerated N deposition,and N *** mycorrhizal(AM)fungi play key roles in N ***,it is still unclear whether AM fungi can alleviate N losses by reducing *** potential mechanisms by which AM fungi reduce NH_(3)emissions in five land-use types(grazed grassland,mowed grassland,fenced grassland,artificial alfalfa grassland,and cropland)were explored in this *** showed that AM fungal inoculation significantly reduced NH3emissions,and the mycorrhizal responses of NH3emissions were determined by land-use *** equation modeling(SEM)showed that AM fungi and land-use type directly affected NH_(3)*** addition,the reduction in NH_(3)emissions was largely driven by the decline in soil NH_(4)^(+)-N and pH and the increases in abundances of ammonia-oxidizing archaea(AOA)amoA and bacteria(AOB)amoB genes,urease activity,and plant N uptake induced by AM fungal inoculation and land-use *** present results highlight that reducing the negative influence of agricultural intensification caused by land-use type changes on AM fungi should be considered to reduce N losses in agriculture and grassland ecosystems.

关键词： agricultural intensification grassland management functional genes plant N uptake N leaching N loss

Metal-organic nanosheet assembly ions sieving membrane for precise lithium ion and anion/solvent separation toward robust lithium metal battery

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Science China Chemistry 2024年

作者： Jian-Qiang Shen Tian-Tian Zhao Ying-Li Song Ling-Juan Zhang Ya-nan Gao Xiao-nan cui Peng Zhao Xian-Ming Zhang Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education School of Chemistry & Material ScienceShanxi Normal University College of Chemistry and Chemical Engineering Taiyuan University of Technology

Metal-organic nanosheets （MONs） as a novel material with tunable pore structures and low mass transfer resistance, have emerged as molecular sieves for the separation of gases and liquids. In theory, they can also serve as ion sieves for lithium metal batteries （LMBs）, realizing the high-energy and dendritic free LMBs. However, there are rarely relevant reports, because it is difficult to simultaneously balance efficient ion sieving ability, high ion passing rate and high electrochemical stability. Here, we synthesized a stable ultrathin MON [Zn2（Bim）4]([Zn2（Bim）4] nanosheet, HBim=benzimidazolate), which can achieve both efficient lithium ion sieving ability, high lithium ion passing rate and high electrochemical stability at the same time. The separator assembled by this MON exhibits high Li+transfer number of 0.81 due to the accurate lithium ion and anion/solvent separation. The battery containing such separator shows high lithium ionic conductivity of 0.74 mS cm-1and low activation energy of 0.099 eV, which can be attributed to the nanometer level thickness and the ion sieving effect. What is more, we realized the application of MONs-based ion sieves in LMBs with intercalation cathodes for the first time. And the LiFePO4|Li battery with as-assembled separator demonstrates improved Coulombic efficiency （> 99%） and significantly extended cycling life （>1600 cycles） with 80%capacity retention.

关键词： lithium sieving membrane metal-organic nanosheets lithium metal battery lithium ion and anion separation lithiumion and solvent separation

“共赢”vs.“牺牲”:道德消费叙述框架对消费者算法推荐信任的影响

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心理学报 2024年第2期56卷 179-193页

作者：徐岚陈全崔楠辜红武汉大学经济与管理学院武汉大学组织营销研究中心武汉430072 华中师范大学城市与环境科学学院武汉430079

消费者在做出道德消费选择时,要面对丰富的道德产品,复杂地权衡功利利益和道德利益。算法决策推荐可以减轻道德消费决策的复杂性,但是消费者在涉及道德伦理的权衡决策中对算法存在不信任,因为算法是一种典型的以功利论来处理道德权衡问... 详细信息

消费者在做出道德消费选择时,要面对丰富的道德产品,复杂地权衡功利利益和道德利益。算法决策推荐可以减轻道德消费决策的复杂性,但是消费者在涉及道德伦理的权衡决策中对算法存在不信任,因为算法是一种典型的以功利论来处理道德权衡问题的方式。本研究提出采用“共赢”(vs.“牺牲”)叙述框架对道德消费中的算法推荐信任有积极影响,消费者对功利论式道德观念的接受程度中介了上述积极效应。实验1发现“共赢”(vs.“牺牲”)叙述框架会增加消费者选择算法推荐的意愿。实验2验证了“共赢”(vs.“牺牲”)叙述框架对消费者算法推荐信任的正向影响,以及功利论式道德观念接受度的中介作用。实验3进一步识别了上述影响的边界条件,即道德消费的“共赢”(vs.“牺牲”)叙述框架仅会增强消费者对算法替代型决策推荐的信任,但是并不会改变消费者对于算法增强型决策推荐信任。

关键词：道德消费算法推荐道义论功利论框架效应

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基于工业遗产保护的城空间景观设计策略

鞋类工艺与设计 2024年第6期4卷 173-175页

作者：崔楠西安医学院陕西西安710021

近年来,社会转型进程加快,部分工业建筑逐渐衰败,已不再适应当前时代发展要求。在此背景下,主张基于工业遗产保护视角,开展城市空间景观设计,打造新型特色城市空间景观。本文从工业遗产保护维度出发,多角度分析城市景观设计原则,探索城... 详细信息

近年来,社会转型进程加快,部分工业建筑逐渐衰败,已不再适应当前时代发展要求。在此背景下,主张基于工业遗产保护视角,开展城市空间景观设计,打造新型特色城市空间景观。本文从工业遗产保护维度出发,多角度分析城市景观设计原则,探索城市景观设计优化策略,城市景观设计人员应创新遗产保护理念,丰富景观设计层次,科学协调色彩搭配,全面展现景观生态优势,增强城市空间景观感染性和吸引力。

关键词：工业遗产保护城市空间景观空间景观设计

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基于强化学习的多技能项目调度算法

控制理论与应用 2024年第3期41卷 502-511页

作者：胡振涛崔南方胡雪君雷晓琪华中科技大学管理学院湖北武汉430074 湖南大学工商管理学院湖南长沙410082

多技能项目调度存在组合爆炸的现象,其问题复杂度远超传统的单技能项目调度,启发式算法和元启发式算法在求解多技能项目调度问题时也各有缺陷.为此,根据项目调度的特点和强化学习的算法逻辑,本文设计了基于强化学习的多技能项目调度算法... 详细信息

多技能项目调度存在组合爆炸的现象,其问题复杂度远超传统的单技能项目调度,启发式算法和元启发式算法在求解多技能项目调度问题时也各有缺陷.为此,根据项目调度的特点和强化学习的算法逻辑,本文设计了基于强化学习的多技能项目调度算法.首先,将多技能项目调度过程建模为符合马尔科夫性质的序贯决策过程,并依据决策过程设计了双智能体机制.而后,通过状态整合和行动分解,降低了价值函数的学习难度.最后,为进一步提高算法性能,针对资源的多技能特性,设计了技能归并法,显著降低了资源分配算法的时间复杂度.与启发式算法的对比实验显示,本文所设计的强化学习算法求解性能更高,与元启发式算法的对比实验表明,该算法稳定性更强,且求解速度更快.

关键词：多技能资源项目调度智能算法强化学习并行调度

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新时代青年担当精神及其培育路径研究

中共南昌市委党校学报 2024年第2期22卷 99-104页

作者：崔楠谷思雨沈阳航空航天大学马克思主义学院辽宁沈阳110136

作为实现中华民族伟大复兴的时代新人、推进社会主义现代化建设的主力军,新时代青年理应担当起时代责任与世界使命。国情、党情、世情的变化对青年担当精神提出新的要求。在此背景下,探索青年担当精神的时代内涵、价值意蕴和实践进路,... 详细信息

作为实现中华民族伟大复兴的时代新人、推进社会主义现代化建设的主力军,新时代青年理应担当起时代责任与世界使命。国情、党情、世情的变化对青年担当精神提出新的要求。在此背景下,探索青年担当精神的时代内涵、价值意蕴和实践进路,针对青年成长实际提出切实的培育路径,对促进青年成长成才、激励青年挺膺担当具有一定借鉴意义。

关键词：新时代青年担当精神培育

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Exploring the impact of non-small cell lung cancer tumor microbiome on the efficacy of chemotherapy and immune checkpoint inhibitors

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Cancer Advances 2024年第5期7卷 1-10页

作者： Yan Dong Tian-Hao Qu Xi-Yue Zhang Hai-Yu Chen Yu-Jun Li Bin Zhang Ping Gao Ling Wang Chun-Xia Zhang Jia Li Xiao-nan cui Department of Oncology The First Hospital of Dalian Medical UniversityDalian 116000China.

Background:This study aimed to investigate the potential of intratumoral microbiota,gut microbiome,peripheral blood T-cell subsets,and inflammatory markers as predictive biomarkers for antitumor efficacy in patients with non-small cell lung ***:This study observed patients with metastatic non-driver mutation non-small cell lung cancer who were initially diagnosed at the First Affiliated Hospital of Dalian Medical University’s Department of Oncology from August 2021 to July 2022 and completed at least four cycles of chemotherapy combined with immune checkpoint inhibitor *** biopsy tissues,fecal,and peripheral blood samples were collected from these *** on the efficacy of the combined chemotherapy and immunotherapy,patients were divided into an effective group and an ineffective *** tumor microbiota,gut microbiome,peripheral blood T-cell subsets,and inflammatory markers were compared between the two *** lung and fecal microbiota were analyzed using 16S rRNA high-throughput *** cytometry was used to detect T-cell subsets,and enzyme-linked immunosorbent assay was employed to measure inflammatory ***:A total of 21 patients were *** were significant differences in the tumor microbiota between the responsive and non-responsive groups,particularly the proportion of the genera Sphingomonas and *** gut microbiome composition changed after treatment,but there were no differences between the two groups before *** were no significant differences in T-cell subsets and inflammatory markers between the responsive and non-responsive ***:The composition of intratumoral microbiota in non-small cell lung cancer patients may serve as an indicator of response to chemotherapy combined with *** predictive value of gut microbiota,T-cell subsets,and inflammatory markers appears *** research should further validate the predictive role of changes in gu

关键词： NSCLC tumor microenvironment gut microbiota tumor-associated microbiota