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Photonics Research 2024年第1期12卷 70-77页

作者： MENGDI LUO JISEN WEN PENGCHENG MA QIUYUAN SUN XIANMENG XIA GANGYAO ZHAN zhenyao yang LIANG XU DAZHAO ZHU CUIFANG KUANG XU LIU Research Center for Intelligent Chips and Devices Zhejiang LabHangzhou 311100China State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311200China

Optical singularity is pivotal in nature and has attracted wide interest from many disciplines nowadays,including optical communication,quantum optics,and biomedical *** vortex lines formed by phase singularities and fabricating chiral nanostructures using the evolution of vortex lines are of great *** this paper,we introduce a promising method based on two-photon polymerization direct laser writing(2PP-DLW)to record the morphology of vortex lines generated by tightly focused multi-vortex beams(MVBs)at the *** to Gouy phase,the singularities of the MVBs rotate around the optical axis and move towards each other when approaching the focal *** propagation dynamics of vortex lines are recorded by 2PP-DLW,which explicitly exhibits the evolution of the phase ***,the MVBs are employed to fabricate stable three-dimensional chiral nanostructures due to the spiral-forward property of the vortex *** of the obvious chiral features of the manufactured nanostructures,a strong vortical dichroism is observed when excited by the light carrying orbital angular momentum.A number of applications can be envisioned with these chiral nanostructures,such as optical sensing,chiral separation,and information storage.

关键词： vortex chiral singularity

中外合作办学模式中跨文化适应的探索——以四川大学中德办学项目为例

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科教导刊 2024年第24期 31-33页

作者：严方舟陈实张灿 yang zhenyao Zhu Yutian 四川大学电气工程学院四川成都610021 不详

近年来,我国持续关注中外合作办学的高质量发展,对于具有国际视野的新工科人才的需求日益旺盛。在教育政策和国家需求的双重推动下,中外合作办学模式中的跨文化适应教育即成了国际教育中的重要实践,学生在建立本土文化认同感的基础上,... 详细信息

近年来,我国持续关注中外合作办学的高质量发展,对于具有国际视野的新工科人才的需求日益旺盛。在教育政策和国家需求的双重推动下,中外合作办学模式中的跨文化适应教育即成了国际教育中的重要实践,学生在建立本土文化认同感的基础上,也要理解和尊重不同文化的传统和行为准则,在多元环境中增强国际胜任力。文章以四川大学中德办学项目为例,探索合作办学模式中跨文化适应的实践,通过夯实语言基础、营造文化环境、明确发展路径和加强本土文化教育等措施,以提升学生的跨文化适应能力,并构建可推广的教育路径。

关键词：跨文化适应四川大学中德办学项目教育实践本土文化认同

The role of sediment resuspension duration in releaseof PAHs

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Chinese Science Bulletin 2008年第18期53卷 2777-2782页

作者： FENG JingLan SHEN zhenyao NIU JunFeng yang ZhiFeng State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing 100875 China

Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental pollutants. Due to their low water solubility and high hydrophobicity, PAHs are rapidly sorbed onto particles and subsequently deposit in sediments once introduced into aquatic environment. In such a way, sediments become a huge sink for PAHs. During sediment resuspension, the potential exists for PAHs to be released from sediments into water. Sediment resuspension plays an important role in the transportation and fate of PAHs in the aquatic environment. In this study, release behavior of PAHs on yangtze River sediment during resuspension was investigated using a particle entrainment simulator (PES). The role of re- suspension duration on release of 16 PAHs was measured by resuspending sediment for 12 h at 0.2 and 0.5 N/m2, respectively. Results indicated that PAH concentrations in TSS increase over time with more increase of phenanthrene and 4-ring PAHs. Comparing with 0.2 N/m2 (30%), ∑PAHs concentra- tions in TSS demonstrated remarkable increase during 0.5 N/m2 resuspension (37%). Dissolved PAH concentrations increased throughout the duration with more increase of 2―3 ring PAHs (50%―88%). Dissolved PAH concentrations showed remarkable increase during 0.5 N/m2 resuspension (50%). Moreover, PAH concentrations in overlying water throughout the duration of resuspension were higher than toxic effects threshold values in drinking water developed by WHO, which may cause toxic effect on ecosystem.

关键词：多环化合物长江再悬浮 PAHs

Numerical study of steady flow characteristics of a rear variable-area bypass injector with alternating area regulator

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Chinese Journal of Aeronautics 2024年第5期37卷 180-198页

作者： Runfu LIU zhenyao LI Huiliu ZHANG Qixing WANG Yue HUANG Yancheng YOU School of Aerospace Engineering Xiamen UniversityXiamen 361000China

The mixing effectiveness of the airflow between the inner and outer bypass inlets of a Rear Variable-Area Bypass Injector(RVABI)is the key to the afterburner performance of variable cycle *** paper describes an optimized RVABI design based on an alternating area regulator to improve the velocity/temperature uniformity of the incoming flow at the *** with a classical RVABI,numerical simulations show that the proposed alternating RVABI performs better in terms of thermal mixing efficiency and total pressure loss in different variable cycle engine *** the increasing air contact area between the inner and outer bypass of alternating structure RVABI,and a larger streamwise vortex in the inner bypass inlet due to the proposed alternating lobe structure in the RVABI contribute to the significantly increase of mixing ***,the alternating regulator induces strong streamwise vortex,which helps to improve the airflow mixing with its vortex-induced *** interaction between the streamwise vortex and azimuthal vortex further promises the velocity/temperature uniformity after the *** the increase of alternating lobe’s height ratio,the covering area of the streamwise vortex and the azimuthal vortex is enlarged,which further enhances the thermal mixing efficiency of the *** design gives an insight into the future design and optimization of RVABI.

关键词： Alternating area regulator Lobed mixer Variable cycle engine Rear Variable-Area Bypass Injector(RVABI) Streamwise vortex

Impact of wetting-drying cycles and acidic conditions on the soil aggregate stability of yellow‒brown soil

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Journal of Mountain Science 2024年第6期21卷 2075-2090页

作者： XIA zhenyao NI Yuanzhen LIU Deyu WANG Di XIAO Hai Key Laboratory of Geological Hazards on Three Gorges Reservoir Area Ministry of EducationYichang 443002China College of Civil Engineering&Architecture China Three Gorges UniversityYichang 443002China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of EducationChina Three Gorges UniversityYichang 443002China

Soil aggregate is the basic structural unit of soil,which is the foundation for supporting ecosystem functions,while its composition and stability is significantly affected by the external *** study was conducted to explore the effect of external environment(wetting-drying cycles and acidic conditions)on the soil aggregate distribution and stability and identify the key soil physicochemical factors that affect the soil aggregate *** yellow‒brown soil from the Three Gorges Reservoir area(TGRA)was used,and 8 wetting-drying conditions(0,1,2,3,4,5,10 and 15 cycles)were simulated under 4 acidic conditions(pH=3,4,5 and 7).The particle size distribution and soil aggregate stability were determined by wet sieving method,the contribution of environmental factors(acid condition,wetting-drying cycle and their combined action)to the soil aggregate stability was clarified and the key soil physicochemical factors that affect the soil aggregate stability under wetting-drying cycles and acidic conditions were determined by using the Pearson’s correlation analysis,Partial least squares path modeling(PLS‒PM)and multiple linear regression *** results indicate that wetting-drying cycles and acidic conditions have significant effects on the stability of soil aggregates,the soil aggregate stability gradually decreases with increasing number of wetting-drying cycles and it obviously decreases with the increase of ***,the combination of wetting-drying cycles and acidic conditions aggravate the reduction in the soil aggregate *** wetting-drying cycles,acidic conditions and their combined effect imposes significant impact on the soil aggregate stability,and the wetting-drying cycles exert the greatest *** soil aggregate stability is significantly correlated with the pH,Ca^(2+),Mg^(2+),maximum disintegration index(MDI)and soil bulk density(SBD).The PLS‒PM and multiple linear regression analysis further reveal that the soil aggre

关键词： Yellow‒brown soil Wetting-drying cycles Acidic conditions Soil aggregate stability Soil disintegration

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施工现场临时用电断路器的选择

现代建筑电气 2017年第1期8卷 34-39页

作者：杨振尧深圳市甘泉建设监理有限公司广东深圳518067

依据GB 50194—2014《建设工程施工现场供用电安全规范》、JGJ 46—2005《施工现场临时用电安全技术规范》等相关标淮,介绍了施工现场临时用电断路器的配置要求,选用符合标准GB 14048.2—2008《低压开关设备和控制设备第2部分:断路器》... 详细信息

依据GB 50194—2014《建设工程施工现场供用电安全规范》、JGJ 46—2005《施工现场临时用电安全技术规范》等相关标淮,介绍了施工现场临时用电断路器的配置要求,选用符合标准GB 14048.2—2008《低压开关设备和控制设备第2部分:断路器》的断路器,分析了断路器分断能力选择和参数选择,阐述了断路器选择性配合的校验,以及用剩余电流动作保护作接地故障保护的必要性。提出施工现场临时用电断路器的选择既要保证可靠性,又要考虑经济性,需要快速、准确地估算短路电流。

关键词：断路器参数选择分断能力选择性配合

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施工现场用电剩余电流动作保护器的选择

建筑电气 2017年第2期36卷 45-51页

作者：杨振尧深圳市甘泉建设监理有限公司广东省深圳市518048

依据JGJ 46-2005《施工现场临时用电安全技术规范》、GB 50194-2014《建设工程施工现场供用电安全规范》及GB 13955-2005《剩余电流动作保护装置安装和运行》等规范,结合工程实例分析施工现场用电中剩余电流动作保护级数及各级剩余电流... 详细信息

依据JGJ 46-2005《施工现场临时用电安全技术规范》、GB 50194-2014《建设工程施工现场供用电安全规范》及GB 13955-2005《剩余电流动作保护装置安装和运行》等规范,结合工程实例分析施工现场用电中剩余电流动作保护级数及各级剩余电流动作保护参数选择的具体要求,提出施工现场用电泄漏电流的计算方法。同时,分析选用电磁式剩余电流动作塑壳断路器的必要性。

关键词：施工现场电气环境施工用电接地故障电击防护漏电保护泄漏电流电子式剩余电流动作保护器:电磁式剩余电流动作保护器

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施工现场用电低压配电系统接地型式的选择

建筑电气 2017年第10期36卷 46-52页

作者：杨振尧深圳市甘泉建设监理有限公司广东省深圳市518048

依据国家、行业及电力企业相关标准、规范,结合建设工程施工现场用电的特点和实践经验,从施工现场用电高、低压接地故障引发的危害,对施工现场用电低压配电系统接地型式的选择进行分析,提出施工现场用电低压配电系统接地型式的选择须考... 详细信息

依据国家、行业及电力企业相关标准、规范,结合建设工程施工现场用电的特点和实践经验,从施工现场用电高、低压接地故障引发的危害,对施工现场用电低压配电系统接地型式的选择进行分析,提出施工现场用电低压配电系统接地型式的选择须考虑工地变电所高压侧接地故障对低压设备和人身安全的影响。并总结10 kV系统不同接地方式下,施工现场用电低压配电系统应采用的接地型式及相关安全技术措施。

关键词：施工现场用电:配电系统接地型式:TN—S系统 TT系统接地故障中性点不接地消弧线圈接地:低电阻接地

基于边缘光抑制技术的双光束激光直写纳米光刻系统

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中国激光 2022年第2期49卷 1-11页

作者：周国尊何敏菲杨臻垚曹春谢飞曹耀宇匡翠方刘旭浙江大学光电科学与工程学院现代光学仪器国家重点实验室浙江杭州310027 之江实验室超级感知研究中心浙江杭州310023 暨南大学光子技术研究院广东省光纤传感与通信技术重点实验室广东广州510000

利用边缘光抑制技术,设计并研制了一套双光束激光三维直写光刻系统。该系统含有高速扫描振镜和三维纳米压电平台两组扫描机构,可以根据不同加工需求完成多种扫描模式下的微纳结构制造。分析了光刻光束中激发光与抑制光的能量变化对加工... 详细信息

利用边缘光抑制技术,设计并研制了一套双光束激光三维直写光刻系统。该系统含有高速扫描振镜和三维纳米压电平台两组扫描机构,可以根据不同加工需求完成多种扫描模式下的微纳结构制造。分析了光刻光束中激发光与抑制光的能量变化对加工精度的影响,通过对光刻光束能量的精确控制,实现了基板表面最小线宽为64 nm的均匀线条和线宽为30 nm的悬浮线的稳定加工,加工结构的线宽变化符合理论预期。该系统在进行实用器件加工时,最高加工产率可达到0.6 mm;/min。使用该系统加工制造了多种微纳结构,证实了其具备加工大深宽比周期结构、复杂曲线结构和不规则三维结构的能力。

关键词：激光技术光学制造受激发射损耗激光直写微纳光学器件

Method for active spatial alignment and stabilization of laser beams in multi-beam systems

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Chinese Optics Letters 2023年第3期21卷 47-53页

作者：丁晨良朱大钊马程鹏汤孟博杨臻垚刘勇匡翠方刘旭 Research Center for Intelligent Chips and Devices Zhejiang LabHangzhou 311121China State Key Laboratory of Modern Optical Instrumentation Department of Optical EngineeringZhejiang UniversityHangzhou 310027China College of Electronics and Information Engineering Shanghai University of Electric PowerShanghai 200090China

We propose a new method for the development of multi-beam systems for the spatial alignment and stability of beams based on the error separation *** method avoids alignment errors caused by coupling effect of piezoelectric devices,inaccurate correction calculations,and detection mode of the angular *** to the results by external detectors,the error value of spatial alignment and the root mean square[RMS]of deviations under control during 1 h can be equivalent to approximately 0.87 and 1.06 nm at the sample plane under an oil immersion lens[focal length f=2 mm].The RMS of deviations is less than one-third of those currently reported for multi-beam systems;therefore,higher alignment and stability accuracy can be achieved with our proposed method.

关键词： beam stabilization multi-beam microscopy high-precision correction decoupling