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Journal of Wuhan University of Technology(Materials Science) 2024年第1期39卷 44-49页

作者：刘云才 ZHU Chen School of Architecture and Materials Engineering Hubei Second Normal UniversityWuhan 430205China

Phosphate was removed from aqueous environment by corundum-hollow-spheres supported caclined hydrotalcite (cHT) thin films. Mg-Al-CO3 hydrotalcite (HT) thin films were deposited on corundumhollow-sphere substrates by hydrothermal homogeneous precipitation at 120℃for 30-240 min and cHT thin films were obtained by annealing of the HT thin films at 500℃for 180 min. Their crystal phase, morphology and microstructure were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).The results show that homogeneous, well-crystallized and hierarchical flower-like thin films were deposited firmly on the surface of the corundum. The mechanism of nucleation and growth of the HT thin films was fitted well with the anion coordination polyhedron growth unit model. To determine the absorption of phosphate by this adsorbent, different bed depth (10-30 cm) and flow rate (1.0-3.0 m L/min) were examined by column experiments. The highest removal efficiency of phosphate amounted to 98.5%under optimum condition (pH=7.2). The adsorption capacity increased as the bed depth increased and decreased as the flow rate increased.

关键词： adsorption phosphate hydrotalcite corundum-hollow-sphere hydrothermal homogeneous precipitation thermal anneal

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披碱草属真菌病害研究进展

草业学报 2024年第2期33卷 226-241页

作者：薛龙海刘佳奇李春杰兰州大学草种创新与草地农业生态系统全国重点实验室草地微生物研究中心草地农业教育部工程研究中心甘肃省西部草业技术创新中心草地农业科技学院农业农村部草牧业创新重点实验室甘肃兰州730020 中国林业科学研究院国家林业和草原局草原研究中心北京100091

披碱草属是青藏高原高寒草地的优势禾草,在我国甘肃、青海、西藏、新疆、四川等高寒牧区广泛种植。真菌病害是限制披碱草生长的重要因素,可直接影响披碱草的产量和品质,进而制约草地农业生态系统的生产力。本研究对国内外近年来披碱草... 详细信息

披碱草属是青藏高原高寒草地的优势禾草,在我国甘肃、青海、西藏、新疆、四川等高寒牧区广泛种植。真菌病害是限制披碱草生长的重要因素,可直接影响披碱草的产量和品质,进而制约草地农业生态系统的生产力。本研究对国内外近年来披碱草属真菌病害的病原学、发生规律及防治措施等方面进行归纳,展望了病害的研究前景和研究思路。截至目前,共计16种真菌病害已在披碱草属上报道,主要包括锈病、黑粉病、白粉病、麦角病、香柱病和叶斑病等病害;这些病害可对披碱草的叶片、叶鞘、茎秆、穗和种子等造成不同程度的危害。目前国内外针对披碱草属真菌病害的防治方法主要有抗病品种选育、种子处理、生态和化学治理。此外,筛选或培育携带内生真菌(Epichlo?)的新品种将是披碱草抗病研究的突破口之一。

关键词：披碱草病害发生规律防治措施

前列腺癌组织中ABCC4、miR-125b-5p表达水平与患者术后预后的关系

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国际检验医学杂志 2024年第10期45卷 1159-1164,1170页

作者：贾媛王洪福刘楠尹凯齐文千黄骅市人民医院泌尿外科河北黄骅061100

目的探究前列腺癌(PCa)组织中三磷酸腺苷结合盒转运体C4(ABCC4)、微小RNA-125b-5p(miR-125b-5p)表达水平与患者术后3年内生存的关系。方法选取2017年11月至2020年2月在该院确诊的PCa患者60例,术中收集PCa组织(PCa组)和癌旁组织(对照组... 详细信息

目的探究前列腺癌(PCa)组织中三磷酸腺苷结合盒转运体C4(ABCC4)、微小RNA-125b-5p(miR-125b-5p)表达水平与患者术后3年内生存的关系。方法选取2017年11月至2020年2月在该院确诊的PCa患者60例,术中收集PCa组织(PCa组)和癌旁组织(对照组)。检测样本中ABCC4 mRNA、miR-125b-5p表达水平及ABCC4的表达情况;对患者术后随访3年。分析PCa组织中ABCC4 mRNA和miR-125b-5p表达水平的相关性,二者与临床病理特征及预后的关系,影响PCa患者预后的因素,二者对患者3年内生存的预测价值。结果 PCa组ABCC4 mRNA表达水平和阳性表达率高于对照组,miR-125b-5p表达水平低于对照组(P<0.05);PCa组织中ABCC4 mRNA与miR-125b-5p表达水平呈负相关(P<0.05);PCa组织ABCC4 mRNA、miR-125b-5p表达水平与肿瘤分期、血清前列腺特异性抗原、Gleason评分、肿瘤转移有关(P<0.05);ABCC4 mRNA高表达组、miR-125b-5p低表达组患者3年累积生存率分别低于ABCC4 mRNA低表达组、miR-125b-5p高表达组(P<0.05);死亡组PCa组织中ABCC4 mRNA表达水平高于生存组,miR-125b-5p表达水平低于生存组(P<0.05);ABCC4 mRNA表达偏高、miR-125b-5p表达偏低是PCa患者预后不良的独立危险因素(P<0.05);相较于ABCC4 mRNA、miR-125b-5p各自单独预测PCa患者3年内生存的曲线下面积(AUC),二者联合检测的AUC更高(P<0.05)。结论 ABCC4在PCa患者癌组织中呈高表达,miR-125b-5p呈低表达,二者联合检测对PCa患者3年内生存有较高预测效能。

关键词：前列腺癌三磷酸腺苷结合盒转运体C4 微小RNA-125b-5p 相关性预后预测效能

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三明治式飞行器热防护结构研究进展

机械科学与技术 2024年第10期43卷 1814-1826页

作者：冯佳赵超黄舟刘雪婷中国工程物理研究院总体工程研究所四川绵阳621900 中国工程物理研究院应用电子学研究所四川绵阳621900

三明治式先进热防护结构广泛应用于航空航天装备。然而,由于上述结构多为板面与芯体组合形式,加之通道内流场的综合作用,其换热机理呈现出复杂、多变及强耦合的特点,难以针对真实结构及环境工况开展计算、仿真及实验工作。为此,致力于... 详细信息

三明治式先进热防护结构广泛应用于航空航天装备。然而,由于上述结构多为板面与芯体组合形式,加之通道内流场的综合作用,其换热机理呈现出复杂、多变及强耦合的特点,难以针对真实结构及环境工况开展计算、仿真及实验工作。为此,致力于为飞行器热防护结构设计、仿真、试验、优化工作提供可靠技术支撑,本文选取蜂窝夹芯结构、波纹板夹芯结构和点阵夹芯结构,对于点阵夹芯结构又从四面体、金字塔、X型和Kagome型点阵着手,对国际、国内主要研究团队近年来相关流动与换热研究成果进行综述。阐述了3种热防护结构的结构形式和发展历程,分析了板面与芯体组合作用下的换热形式及隔热机理,归纳总结了现有研究不足之处与发展趋势。可以看出,点阵夹芯相比蜂窝与波纹板夹芯结构,由于其芯体内复杂湍流的存在,换热效率高、温度梯度小,具有更好的隔热潜力。

关键词：热防护隔热机理蜂窝夹芯结构波纹板夹芯结构点阵夹芯结构

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农村产业融合与农民共同富裕——基于田园综合体试点政策分析

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当代经济科学 2024年第4期46卷 124-138页

作者：刘飞贾士俊王欣亮西北大学哲学学院陕西西安710127 西北大学公共管理学院陕西西安710127

在共同富裕目标下,基于政治经济学分析框架,厘清产业融合影响农民增收的理论机制,进而以田园综合体建设试点政策表征农村产业融合,构造准自然实验,并以中国1240个县域为样本进行实证分析。研究发现:(1)田园综合体试点地区的低收入群体... 详细信息

在共同富裕目标下,基于政治经济学分析框架,厘清产业融合影响农民增收的理论机制,进而以田园综合体建设试点政策表征农村产业融合,构造准自然实验,并以中国1240个县域为样本进行实证分析。研究发现:(1)田园综合体试点地区的低收入群体显著增收且农民收入差距明显缩小,证明农村产业融合能带动低收入群体增收,进而促进共同富裕;(2)低收入群体的就业结构优化是农村产业融合产生共同富裕效应的主渠道;(3)农旅融合较农工融合对农民共同富裕的促进作用更强,不同群体收入水平在政策冲击后的变化也印证了这一点;(4)农村产业融合的农民共同富裕效应存在产业融合基础异质性:前期产业融合基础较弱的县域,在推进产业融合促进共同富裕方面表现出更强后发优势;强行政资源支持会增强农村产业融合的共同富裕提升效应。因此,应加大力度支持农旅融合型试点建设,优化低收入群体就业结构,依据区位与农民收入实际,选择性设立田园综合体试点,利用政策扶持推进产业融合。

关键词：农村产业融合农民共同富裕收入分配田园综合体就业结构优化农旅融合农工融合

Neighborhood Combination Search for Single-Machine Scheduling with Sequence-Dependent Setup Time

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Journal of Computer Science & Technology 2024年第3期39卷 737-752页

作者：刘晓路徐宏云陈嘉铭苏宙行吕志鹏丁俊文 College of System Engineering National University of Defense TechnologyChangsha 410015China School of Artificial Intelligence Jianghan UniversityWuhan 430056China Xi’an Satellite Control Center Xi’an 710043China School of Computer Science and Technology Huazhong University of Science and TechnologyWuhan 430074China CCF

In a local search algorithm,one of its most important features is the definition of its neighborhood which is crucial to the algorithm's *** this paper,we present an analysis of neighborhood combination search for solv-ing the single-machine scheduling problem with sequence-dependent setup time with the objective of minimizing total weighted tardiness(SMSWT).First,We propose a new neighborhood structure named Block Swap(B1)which can be con-sidered as an extension of the previously widely used Block Move(B2)neighborhood,and a fast incremental evaluation technique to enhance its evaluation ***,based on the Block Swap and Block Move neighborhoods,we present two kinds of neighborhood structures:neighborhood union(denoted by B1UB2)and token-ring search(denoted by B1→B2),both of which are combinations of B1 and ***,we incorporate the neighborhood union and token-ring search into two representative metaheuristic algorithms:the Iterated Local Search Algorithm(ILSnew)and the Hybrid Evolutionary Algorithm(HEA_(new))to investigate the performance of the neighborhood union and token-ring ***-sive experiments show the competitiveness of the token-ring search combination mechanism of the two *** on the 120 public benchmark instances,our HEA_(new)has a highly competitive performance in solution quality and computational time compared with both the exact algorithms and recent *** have also tested the HEA,new algorithm with the selected neighborhood combination search to deal with the 64 public benchmark instances of the single-machine scheduling problem with sequence-dependent setup *** is able to match the optimal or the best known results for all the 64 *** particular,the computational time for reaching the best well-known results for five chal-lenging instances is reduced by at least 61.25%.

关键词： single-machine scheduling sequence-dependent setup time neighborhood combination search token-ring search hybrid evolutionary algorithm

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不同温度下聚酰亚胺薄膜的蠕变性能

兰州大学学报（自然科学版） 2024年第3期60卷 387-394页

作者：武艳如薛鑫媛何佳佳邢妮刘岩长安大学建筑工程学院西安710061

为研究聚酰亚胺薄膜的蠕变黏弹性本构关系模型,选用厚度25μm的聚酰亚胺膜材料,初始应力选取极限抗拉强度的50%,在23、 50、 80、 110、 140、 170℃下进行单轴蠕变拉伸实验,分析不同温度下膜材料蠕变的变化规律.用经典Kelvin、经典Maxw... 详细信息

为研究聚酰亚胺薄膜的蠕变黏弹性本构关系模型,选用厚度25μm的聚酰亚胺膜材料,初始应力选取极限抗拉强度的50%,在23、 50、 80、 110、 140、 170℃下进行单轴蠕变拉伸实验,分析不同温度下膜材料蠕变的变化规律.用经典Kelvin、经典Maxwell、 Burgers、三参数广义Kelvin、五参数广义Kelvin蠕变本构模型对数据进行拟合,分析拟合效果.结果表明,聚酰亚胺膜材料具有明显的黏弹性,初始应力对聚酰亚胺膜材料的蠕变性能影响显著,初始应力越大,黏弹性越明显.五参数广义Kelvin模型能够较好地预测聚酰亚胺膜材料的蠕变性能,可决系数均超过0.98,Burgers模型次之,其余3种模型的拟合可决系数为0.708~0.958,拟合结果满足实际工程需要.

关键词：聚酰亚胺薄膜黏弹性力学蠕变性能蠕变本构模型

On the Surface Helium Abundance of B-type Hot Subdwarf Stars from the WD+MS Channel of Type Ia Supernovae

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Research in Astronomy and Astrophysics 2024年第5期24卷 21-27页

作者： Rui-Jie Ji Xiang-Cun Meng Zheng-Wei liu Yunnan Observatories Chinese Academy of SciencesKunming 650216Kunming 650216China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of SciencesKunming 650216China International Centre of Supernovae(ICESUN) Yunnan Key LaboratoryKunming 650216China

The origin of intermediate helium (He)-rich hot subdwarfs is still *** studies have suggested that some surviving Type Ia supernovae (SNe Ia) companions from the white dwarf+main-sequence (WD+MS)channel may contribute to the intermediate He-rich hot ***,previous studies ignored the impact of atomic diffusion on the post-explosion evolution of surviving companion stars of SNe Ia,leading to the aspect that they could not explain the observed surface He abundance of intermediate He-rich hot *** this work,by taking the atomic diffusion and stellar wind into account,we trace the surviving companions of SNe Ia from the WD+MS channel using the one-dimensional stellar evolution code MESA until they evolve into hot *** find that the surface He-abundances of our surviving companion models during their core He-burning phases are in a range of-1■log(N_(He) N_(H))■0,which are consistent with those observed in intermediate He-rich hot *** seems to further support the notion that it is possible for surviving companions of SNe Ia in the WD+MS channel to form some intermediate He-rich hot subdwarfs.

关键词： (stars:)subdwarfs-atomic processes-diffusion

RISE Method Based on Rare Allele Infusion and Sanger Sequencing Estimation: A Simple, Cheap, and Efficient Method for Detecting Transgene Copy Number in Rice

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Rice science 2024年第5期31卷 499-502,I0014-I0020页

作者： liu Tingchang HUANG Lifang liu Peng CUI Yanchun CHEN Caiyan MAO Donghai Key Laboratory of Agro-Ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China University of Chinese Academy of Sciences Beijing 100049China

Detecting exogenous gene copy numbers is crucial for examining genetically modified organisms. Traditional methods face a trade-off between feasibility and cost, highlighting the need for a high-precision and low-cost alternative. In this study, we introduced the RISE method, which is based on Rare Allele Infusion and Sanger Sequencing Estimation, for rice.

关键词： Sanger cost Det

Temporal assembly patterns of microbial communities in three parallel bioreactors treating low-concentration coking wastewater with differing carbon source concentrations

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Journal of Environmental Sciences 2024年第3期137卷 455-468页

作者： Weijia Li Yu Xia Na Li Jie Chang Jing liu Pei Wang Xuwen He School of Chemical and Environmental Engineering China University of Mining and Technology-BeijingBeijing 100083China

Carbon source is an important factor of biological treatment systems, the effects of which on their temporal community assembly patterns are not sufficiently understood *** this study, the temporal dynamics and driving mechanisms of the communities in three parallel bioreactors for low-concentration coking wastewater(CWW) treatment with differing carbon source concentrations(S0 with no glucose addition, S1 with 200 mg/L glucose addition and S2 with 400 mg/L glucose addition) were comprehensively studied. Highthroughput sequencing and bioinformatics analyses including network analysis and Infer Community Assembly Mechanisms by Phylogenetic bin-based null model(iCAMP) were used. The communities of three systems showed turnover rates of 0.0029~0.0034 every 15days. Network analysis results showed that the S0 network showed higher positive correlation proportion(71.43%) and clustering coefficient(0.33), suggesting that carbon source shortage in S0 promoted interactions and cooperation of microbes. The neutral community model analysis showed that the immigration rate increased from 0.5247 in S0 to 0.6478in S2. The iCAMP analysis results showed that drift(45.89%) and homogeneous selection(31.68%) dominated in driving the assembly of all the investigated microbial *** contribution of homogeneous selection increased with the increase of carbon source concentrations, from 27.92% in S0 to 36.08% in S2. The OTUs participating in aerobic respiration and tricarboxylic acid(TCA) cycle were abundant among the bins mainly affected by deterministic processes, while those related to the metabolism of refractory organic pollutants in CWW such as alkanes, benzenes and phenols were abundant in the bins dominated by stochastic processes.

关键词： Coking wastewater treatment Temporal dynamics Network analysis Deterministic processes Stochastic processes