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北朝淄博寨里窑瓷业生产起源原因探析

中国陶瓷 2024年第8期60卷 105-111页

作者：杨君谊李鹏朱姗姗山东财经大学济南210023 青岛市计量技术研究院青岛266000 景德镇学院景德镇333000

通过分析淄博寨里早期窑业技术特征,并于同时期窑业生产链相比较,发现其生产技术可能来源于河南白河窑,而北朝士族的迁徙流动为技术传播的主要动力,淄博本地原有制陶生产基础与自然资源为外地技术得以较早传入的基础性条件。

关键词：寨里窑白河窑技术传播青瓷

二元混合物在液体层上发生马兰戈尼爆裂的研究

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物理学报 2024年第7期73卷 232-243页

作者：谢科薇陶金成董裕力翁雨燕杨俊义方亮苏州大学物理与科学技术学院苏州215031

由于马兰戈尼效应,液滴在液体层表面自发铺展成薄膜的物理过程,在成膜技术、涂层工艺、以及纳米器件的制作等领域具有广泛的应用,但是铺展后液膜自发碎裂成小液滴的现象也被广泛观察到,这种现象限制了马兰戈尼效应应用的发展.本文基于... 详细信息

由于马兰戈尼效应,液滴在液体层表面自发铺展成薄膜的物理过程,在成膜技术、涂层工艺、以及纳米器件的制作等领域具有广泛的应用,但是铺展后液膜自发碎裂成小液滴的现象也被广泛观察到,这种现象限制了马兰戈尼效应应用的发展.本文基于以往的实验观察对液膜的碎裂机制进行完备的解释,并通过实验进行验证,指出了液滴薄膜中心与边缘蒸发速率的差异引起的马兰戈尼流动对液膜边界产生的微扰,使得液滴铺展到最大时边缘生长出指状液柱.此外,根据微扰模型推导出边界失稳的临界波长和最大波长的表达式,基于Plateau-Rayleigh不稳定性解释了指状液柱碎裂的原因.建立同心圆柱壳液柱模型简化计算,预测了不同黏度比的液滴在液体层上铺展为薄膜的浓度范围和发生马兰戈尼爆裂的位置区间,并通过实验验证了不同醇溶液发生马兰戈尼爆裂的浓度范围和位置区间.该理论解释将在成膜技术、涂层工艺等领域提供更加精细的理论指导;特别地,本文提出的同心圆柱壳简化模型为化工领域微量反应和纳米颗粒制备等研究领域中的一些技术难题提供新的解决思路.

关键词：铺展系数马兰戈尼效应边界失稳 Plateau-Rayleigh不稳定性

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磁通切换永磁电机多目标优化

宁德师范学院学报（自然科学版） 2024年第2期36卷 128-132,167页

作者：梁国祥马婧宁世超杨怡君宁德师范学院机电工程学院福建宁德352100 福建青拓重工有限公司福建福安355006

以磁通切换永磁电机为研究对象,利用有限元法建立准确可靠的仿真模型,并通过仿真验证其有效性.运用灵敏度分析方法找出关键参数,引入进化算法对电机参数进行多目标优化,以提高电机的电磁性能.研究结果显示,优化后的电机平均电磁转矩提升... 详细信息

以磁通切换永磁电机为研究对象,利用有限元法建立准确可靠的仿真模型,并通过仿真验证其有效性.运用灵敏度分析方法找出关键参数,引入进化算法对电机参数进行多目标优化,以提高电机的电磁性能.研究结果显示,优化后的电机平均电磁转矩提升了22.1%,转矩波动和齿槽转矩分别降低了9.09%和56.90%.

关键词：磁通切换永磁电机有限元分析多目标优化进化算法

Measurement of Temperature Change in Nonlinear Optical Materials by Using the Z-Scan Technique

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Chinese Physics Letters 2011年第8期28卷 145-148页

作者： DONG Shu-Guang yang jun-yi SHUI Min yi Chuan-Xiang LI Zhong-Guo SONG ying-Lin School of Physical Science and Technology Soochow UniversitySuzhou 215006 Department of Physics Harbin Institute of TechnologyHarbin 150001

Spatial and temporal changes of temperature in a novel polymer are investigated by using the Z−scan technique under ns laser pulse *** to the open aperture Z−scan experimental results,the nonlinear absorption coefficient of the polymer is *** solving the diffusion equation of heat conduction induced by optical absorption,the spatial and temporal changes in temperature are *** change in temperature drives the photo-acoustic and electromagnetic wave propagating in the polymer and induces the change in refractive index,which serves as a negative lens,and the closed aperture Z−scan shows a peak and valley *** on the numerical calculation,we achieve a good fit to the closed-aperture Z−scan curve with an optimized nonlinear refractive *** consistency attests the existence of temperature change in the solution,and the Z-scan technique is suitable to investigate this change in temperature.

关键词： temperature profile refractive

Effectiveness of urban distributed runoff model for discharge and water depth calculation in urban drainage pipe networks

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Journal of Hydrodynamics 2024年第3期36卷 582-591页

作者： yang Zhou yi-ling Leng Peng-yu Wang Shang-hong Zhang Yu-long Zhu Yu-jun yi School of Water Resources and Hydropower Engineering North China Electric Power UniversityBeijing102206China State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing100875China

Effective urban land-use re-planning and the strategic arrangement of drainage pipe networks can significantly enhance urban flood defense *** at reducing the potential risks of urban flooding,this paper presents a straightforward and efficient approach to an urban distributed runoff model(UDRM).The model is developed to quantify the discharge and water depth within urban drainage pipe networks under varying rainfall intensities and land-use *** Nash efficiency coefficient of UDRM exceeds 0.9,which indicates its high computational efficiency and potential benefit in predicting urban *** prediction of drainage conditions under both current and re-planned land-use types is achieved by adopting different flood recurrence *** findings reveal that the re-planned land-use strategies could effectively diminish flood risk upstream of the drainage pipe network across 20-year and 50-year flood recurrence ***,in the case of extreme rainfall events(a 100-year flood recurrence),the re-planned land-use approach fell short of fulfilling the requirements necessary for flood disaster *** these instances,the adoption of larger-diameter drainage pipes becomes an essential requisite to satisfy drainage ***,the proposed UDRM effectively combines land-use information with pipeline data to give practical suggestions for pipeline modification and land-use optimization to combat urban ***,this methodology warrants further promotion in the field of urban re-planning.

关键词： Stormwater runoff water depth urban distributed runoff model urban drainage pipe networks urban land-use re-planning

Differential bonding behaviors of sodium/potassium-ion storage in sawdust waste carbon derivatives

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Chinese Chemical Letters 2024年第4期35卷 496-501页

作者： jun-Ming Cao Kai-yang Zhang Jia-Lin yang Zhen-yi Gu Xing-Long Wu MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal UniversityChangchun 130024China Department of Chemistry Northeast Normal UniversityChangchun 130024China

Sodium-ion batteries(SIBs) and potassium-ion batteries(PIBs) are the most promising alternatives to lithium-ion batteries, and thus have drawn intensive research attention. Porous carbon materials from different precursors have been widely used as anode materials owing to their compatible storage effectiveness of both larger radii sodium and potassium ions. However, the differential bonding behaviors of Na and K ions with porous carbon-based anode are the significant one worth investigating, which could provide a clean picture of alkali ions storage mechanism. Therefore, in this work, we prepare a porous carbon network derived from sawdust(SDC) wastes, to further analyze the differences on sodium and potassium ions storage behaviors in terms of bond-forming process. It is found that, as-prepared SDC anodes could deliver stable sodium and potassium storage capacities, however, there are notable distinctions in terms of electrochemical behaviors and diffusion processes. By virtue of ex-situ XRD and Raman spectroscopy, the phase transition reaction of potassium ions could be well-observed, and the results shows that the multiple intercalated compounds was formed in SDC network during ions insertion, further resulting in slower diffusion kinetics and larger resistance compared to non-bonded process of sodium ions storage. This study provides more insights into the differences between sodium and potassium ions storage, as well as the energy storage mechanism of porous carbon as anodes for secondary batteries.

关键词： Porous carbon Sodium-ion storage Potassium-ion storage Bonding behaviors Batteries

Cuproptosis mediates copper-induced testicular spermatogenic cell death

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Asian Journal of Andrology 2024年第3期26卷 295-301页

作者： Jing-yi Zhang Xu-jun Yu jun-jun Li Yao Xiao Guang-Sen Li Fang yang Liang Dong Chengdu University of Traditional Chinese Medicine Chengdu 611137China Chengdu Fifth People’s Hospital The Fifth People’s Hospital of Chengdu University of Traditional Chinese MedicineChengdu 611130China TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province Hospital of Chengdu University of Traditional Chinese MedicineChengdu 610072China Department of Surgery The Reproductive and Women-Children HospitalChengdu University of Traditional Chinese MedicineChengdu 610041China

Cuproptosis,a novel mechanism of programmed cell death,has not been fully explored in the context of spermatogenic *** investigated the potential involvement of cuproptosis in spermatogenic cell death using a mouse model of copper *** male Institute of Cancer Research(ICR)mice were randomly divided into four groups that received daily oral gavage withsodium chloride(control)or copper sulfate(CuSO_(4))at 50 mg kg^(−1),100 mg kg^(−1),or 200 mg kg^(−1),for 42 consecutive *** to copper overload exhibited a disruption in copper ***,significant upregulated expression of keycuproptosis factors was accompanied by a significant rise in the rates of testicular tissue cell *** revealed the presence of ferredoxin 1(Fdx1)in Sertoli cells,Leydig cells,and spermatogenic cells at various stages oftesticular development,and the Fdx1-positive staining area was significantly increased in copper-overloaded *** and decreased adenosine triphosphate levels were also observed,further implicating mitochondrial damage *** analyses revealed pathological lesions and blood−testis barrier destruction in the testicular tissue,accompaniedby decreased sperm concentration and motility,in copper-overloaded *** summary,our results indicate that copper-overloadedmice exhibit copper homeostasis disorder in the testicular tissue and that cuproptosis participates in spermatogenic cell *** findings provide novel insights into the pathogenic mechanisms underlying spermatogenic cell death and provide initialexperimental evidence for the occurrence of cuproptosis in the testis.

关键词： blood−testis barrier cuproptosis ferredoxin 1 spermatogenic cell death

Effect of solute Ce,Mn,and Si on mechanical properties of silicon steel:insights from DFT calculations

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Journal of Iron and Steel Research International 2024年第3期31卷 700-709页

作者： Xiang-jun Liu Ji-chun yang Hui-ping Ren Xiao-bin Jia Ming-yi Zhang Chang-qiao yang School of Materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resource Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina Inner Mongolia North Heavy Industries Group Co. Ltd.Baotou 014010Inner MongoliaChina Inner Mongolia Metal Material Research Institute Baotou 014010Inner MongoliaChina

The influence of solute Ce,Mn,and Si on the mechanical properties of silicon steel was investigated by first-principles ***,Mn,and Si can all be solubilized in Fe *** significantly reduces the incompressibility and rigidity of the system but also significantly improves the toughness and *** effect of Mn on mechanical properties of the system is not *** has a significant effect on the improvement in incompressibility and rigidity but a limited effect on the improvement in toughness and *** metallic bond strength of Fe-Ce,Fe-Mn,and Fe-Si doped systems is weaker than that of the pure Fe system,which can be used to explain the reduction in the incompressibility and rigidity of these doped *** relatively high electron cloud density in the doped system may be responsible for the increase in toughness.

关键词： Silicon steel Rare earth First-principles calculation Elastic modulus Electronic structure

基于风电-负荷匹配度的风电消纳能力自动评估方法

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自动化技术与应用 2024年第4期43卷 22-25,37页

作者：唐伟佳李强贾勇勇高骞杨俊义国网江苏省电力有限公司电力科学研究院江苏南京210000 国网江苏省电力有限公司江苏南京210000

风力发电是一种绿色清洁发电技术,风能分布不均,存在着弃风问题,基于此,研究基于风电-负荷匹配度的风电消纳能力自动评估方法。创建风电-负荷场景,获取真实风电-负荷数据,计算风电-负荷匹配度,选取风电消纳能力自动评估指标,构建风电消... 详细信息

风力发电是一种绿色清洁发电技术,风能分布不均,存在着弃风问题,基于此,研究基于风电-负荷匹配度的风电消纳能力自动评估方法。创建风电-负荷场景,获取真实风电-负荷数据,计算风电-负荷匹配度,选取风电消纳能力自动评估指标,构建风电消纳能力自动评估模型,明确构建模型的约束条件,基于粒子群优化算法获取评估数值,根据评估规则确定风电消纳能力,实现风电消纳能力的自动评估。实验数据显示:应用提出方法获得的风电消纳能力自动评估时延最小值为11.4 s,评估结果误差最小值为2%,风电消纳能力评估效果更佳。

关键词：风电-负荷场景风电消纳能力风电-负荷匹配度弃风问题自动评估粒子群优化算法