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Journal of Ocean Engineering and Science 2023年第6期8卷 590-594页

作者： Zhao Li Jing Liu xinyu xie College of Computer Science Chengdu UniversityChengdu 610106PR China Officers College of PAP Chengdu 610213China

The main work of this paper is focused on construction the single traveling wave solution of the coupled Fokas-Lenells system,which is usually used to simulate the propagation of ultrashort optical pulses in birefringent fibers or crossing sea waves on the high seas.Firstly,the coupled Fokas-Lenells system is simplified into a nonlinear ordinary differential equation by traveling wave transformation and linear transformation.Then,using the well-known complete discriminant system of third-order polynomials,some single traveling wave solutions of the coupled Fokas-Lenells system are obtained including implicit solutions,rational function solutions and Jacobian function solutions.

关键词： Coupled Fokas-Lenells system Traveling wave solution Complete discrimination system

Drag Reduction Characteristics of Microstructure Inspired by the Cross Section of Barchan Dunes under High Speed Flow Condition

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Journal of Renewable Materials 2022年第3期10卷 781-797页

作者： Jiawei Jiang Yizhou Shen Jie Tao Zhenfeng Jia xinyu xie Chaojiao Zeng College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing210016China

A new type of microstructure inspired by the cross section of barchan dunes was proposed to reduce windage,which was considered as a passive drag reduction technology in aerospace manufacturing field.Computational fluid dynamics method was carried out to discuss the effect of the microstructure on the skin friction reduction under high velocity flow condition.Different microstructure heights were employed to survey the reduction of drag.The results illustrated that the appearance of microstructure led to a generation of pressure drag in non-smooth model(with microstructures inspired by cross section of barchan dune)in contrast to smooth model.However,the microstructure significantly increased the thickness of the low-speed fluid by 11.4%in the near-wall flow field,causing the low-speed fluid to rise and decreasing the velocity gradient near the wall,thereby reducing viscous resistance.In addition,high-speed fluid flowed above the microstructure units instead of along the inner side of the units due to the influence of micro-vortex,resulting in a reduction of friction near the surface.Further-more,micro-vortex was considered to be the significant internal factor to achieve turbulent drag reduction since it could not only reduce the viscous resistance by promoting the fluid flow above the microstructure but also pro-vide a reverse thrust force.The understanding of the mechanism of drag reduction provides theoretical guidance for further fabrication of drag reduction coatings using renewable materials.

关键词： Barchan dunes microstructure high-speed flow micro-vortex

Facilely fabricating superhydrophobic coated-mesh materials for effective oil-water separation:Effect of mesh size towards various organic liquids

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Journal of Materials Science & Technology 2020年第16期47卷 151-160页

作者： Haifeng Chen Yizhou Shen Zhaoru He Zhengwei Wu xinyu xie Department of Materials Chemistry Qiuzhen SchoolHuzhou UniversityHuzhou 313000China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Effective oil-water separation is a continuous pursuit,not only for scientific research but also for engineering application,because oil spills are causing the great pollution in the current ocean environment.Here we reported a superhydrophobic coated-mesh,where the coatings were composed of fluorinated silica(F-SiO2)and polydimethylsiloxane(PDMS),demonstrating the excellent oil-water separation ability towards various organic liquids.The introduction of F-SiO2 could well induce a certain extent of microscopic roughness,leading to the remarkable water repellence.The resultant coatings exhibited the robust superhydrophobicity with the water contact angle reaching 155.9°±1.0°.On this basis,the pore size of polyethylene terephthalate(PET)mesh materials(as a substrate)was mainly discussed with the great oil-water separation efficiency of as high as 98%towards various organic liquids.Also,under the assistance of physical model,it was confirmed that there was a mechanical relation between pore size and organic liquids,where the main connotation was the matching issue of surface tension of organic liquids with the geometrical mechanic(induced by the pore size of the superhydrophobic coated-mesh).This work on the size effect of superhydrophobic coated-mesh materials on various organic liquids is beneficial to the design and manu facture of ideal oil-water separation materials.

关键词： Superhydrophobic Coatings Oil-water separation Surface tension

Preparation and Study of Morel and Banana Waffles

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Agricultural Biotechnology 2023年第1期12卷 24-27页

作者： Xiaoyan LAN Zongyu LIANG xinyu xie College of Wuliangye Technology and Food Engineering Yibin Vocational and Technical CollegeYibin 644000China

[Objectives]The processing technology of morel and banana waffles was studied with morels and bananas as raw materials. [Methods]Four variable factors of morels, bananas, pure milk and white granulated sugar were investigated with sensory evaluation as the evaluation index. The optimal fermentation conditions were determined on the basis of single-factor tests and an orthogonal test. [Results] The best addition proportions of variable factors for morel and banana waffles were 15 g of banana paste, 40 ml of pure milk, 15 g of white granulated sugar, and 1.5 g of morel powder, and those of other factors were 20 ml of egg liquid(whole egg), 35 g of low-gluten flour, 10 g of corn starch, 1 g of baking powder and 2 g of butter. Under these conditions, the morel and banana waffles had moderate shape, delicate taste, bright color and special flavor of raw materials. [Conclusions] This study provides a theoretical basis for the emergence and popularization of new taste and formulas of waffles.

关键词： Waffles Morel Banana Flavor

基于深度学习的全三维气固两相流时空耦合智能预测

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工程热物理学报 2024年第2期45卷 446-452页

作者：谢心喻王晓放郝祎琛赵普谢蓉刘海涛大连理工大学能源与动力学院大连116024

气固流化床在化工、冶金及制药等领域得到了广泛的研究与应用。对流化床内气固两相流的动力学行为进行深入研究有利于流化床设备的设计和性能优化。本文利用深度学习技术构建了数据驱动的全三维深度时空序列模型,对流化床内气固两相流... 详细信息

气固流化床在化工、冶金及制药等领域得到了广泛的研究与应用。对流化床内气固两相流的动力学行为进行深入研究有利于流化床设备的设计和性能优化。本文利用深度学习技术构建了数据驱动的全三维深度时空序列模型,对流化床内气固两相流三维空间和时间维度的复杂动力学行为进行学习,并实现了对未知来流速度条件下流化床内气相和颗粒相速度场的合理预测。测试结果表明,该全三维智能模型的预测结果与CFD计算结果高度一致,具有较好的泛化能力;此外,该模型比传统的数值仿真速度快数百倍,可以用于流场的快速预测,以缓解数值仿真耗时问题。

关键词：深度学习气固两相流三维时空预测流化床

软基中多向受荷大直径单桩桩土相互作用试验研究

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浙江大学学报（工学版） 2024年第3期58卷 570-578页

作者：戴朴修刘开富谢新宇徐越栋浙江大学滨海和城市岩土工程研究中心浙江杭州310058 浙江理工大学建筑工程学院浙江杭州310018 浙江大学温州研究院浙江温州325035

为了研究多向循环受荷大直径单桩的水平变形响应及桩土相互作用机理,开展多向受荷大直径单桩的1g大比尺模型试验,探讨不同竖向和水平循环荷载比下的桩侧受力及变形响应.试验结果表明,施加竖向循环荷载会增大桩身水平位移的发展速率;最... 详细信息

为了研究多向循环受荷大直径单桩的水平变形响应及桩土相互作用机理,开展多向受荷大直径单桩的1g大比尺模型试验,探讨不同竖向和水平循环荷载比下的桩侧受力及变形响应.试验结果表明,施加竖向循环荷载会增大桩身水平位移的发展速率;最大弯矩出现在2.0倍桩径深度处,随着循环次数的增大,桩身弯矩表现出减小的趋势;在循环荷载作用下,最大土抗力所在的位置随着循环次数的增大逐渐从1.5倍桩径深度处向2.0倍桩径深度处移动,循环土体抗力-桩身水平变形(p-y)曲线的退化主要发生在表层土体;施加竖向循环荷载会增大桩土界面的初始刚度,但同时也会加速桩土体系的刚度退化.建议在海上风电大直径单桩的设计中,特别注意竖向循环荷载对长期循环荷载作用下桩身位移及桩土相互作用的不利影响.

关键词： 1g模型试验大直径单桩复杂荷载 p-y曲线桩土相互作用

Low-temperature selective catalytic reduction of NO_(x) with NH_(3) over zeolite catalysts:A review

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Chinese Chemical Letters 2020年第10期31卷 2549-2555页

作者： Yijuan Pu xinyu xie Wenju Jiang Lin Yang Xia Jiang Lu Yao College of Architecture and Environment Sichuan UniversityChengdu 610065China National Engineering Research Center for Flue Gas Desulfurization Sichuan UniversityChengdu 610065China

The selective catalytic reduction(SCR)of NO_(x) by NH3 is one of the most mature technologies for NO_(x) treatment.Catalysts are the main factors affecting denitrification efficiency.Zeolites as low-tempe rature NH3-SCR catalysts have been extensively studied in the past few years.In this work,the mechanism of zeolites for NH3-SCR reaction was reviewed and the denitrification performances of zeolite catalysts prepared by different methods were compared.The effects of sulfur and water poisoning on zeolite catalysts in NH3-SCR reaction were also analyzed.Several ways to address the problems in lowtemperature NH3-SCR reaction were discussed.Hopefully,this review could provide a fundamental understanding of SCR reaction on zeolite catalysts and pave the way toward similar studies to realize its commercial applications.

关键词： Selective catalytic reduction NO_x Zeolite Catalyst SO_(2)and H_(2)O resistance

Population Interaction Dynamics Analysis of an Algae-Fish System

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Applied Mathematics 2022年第6期13卷 544-565页

作者： Ziyou Zhuang Jueyuan Yan xinyu xie Lihua Dai Chaoyue Huang Fangfang Chen Hengguo Yu School of Mathematics and Physics Wenzhou University Wenzhou China Key Laboratory for Subtropical Oceans & Lakes Environment and Biological Resources Utilization Technology of Zhejiang Wenzhou University Wenzhou China

In this paper, before the implementation of ecological laboratory experiments, the population interaction dynamics of an algae-fish system were studied mathematically and numerically. The purpose of this study was to explore how filter-feeding fish population affects the growth dynamics of the algae population. Mathematically theoretical works have been pursuing the investigation of some key conditions for stability of the equilibrium and existence of Hopf bifurcation. Numerical simulation works have been parsing the discovery of the growth dynamics of the algae population in view of population interaction dynamics, which in turn could prove the feasibility of the theoretical derivation and reveal the relationship between filter-feeding fish abundance and algal biomass in fish-drift algae communiyua. Furthermore, it was successful to show that the filter-feeding fish population may be a crucial factor in controlling the proliferation of the algae population, which could also directly grasp the evolution of community dynamics. All these results were expected to be useful in the study of community dynamics and laboratory elimination experiment of the algae population.

关键词： Algae Population Filter-Feeding Fish Population Interaction Dynamics Hopf Bifurcation Stability

港口腹地海铁联运车站的辐射范围分析方法与应用

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铁道运输与经济 2024年第2期46卷 62-70页

作者：简文良谢昕妤高良鹏福建理工大学交通运输学院福建福州350118

为支撑铁路运输企业实施精准营销,促进海铁联运发展,提出一种融合广义费用理论和GIS网络分析技术的铁路车站辐射范围研究方法。以福建省内福州港和厦门港为例,分析2个港口腹地的海铁联运车站辐射范围。在此基础上,从辐射范围变化与海铁... 详细信息

为支撑铁路运输企业实施精准营销,促进海铁联运发展,提出一种融合广义费用理论和GIS网络分析技术的铁路车站辐射范围研究方法。以福建省内福州港和厦门港为例,分析2个港口腹地的海铁联运车站辐射范围。在此基础上,从辐射范围变化与海铁联运分担率变化2方面,评估厦门港海铁联运补贴政策的实施效果。结果表明:厦门港、福州港腹地各铁路站点的辐射范围分别在20~45 km,20~80 km区间;财政补贴能够有效促进厦门港海铁联运发展,表现为补贴实施后,厦门港腹地各海铁联运车站的辐射范围显著增长,在研究区域内的海铁联运分担率提高约6.22%;但财政补贴也带来邻近港口间铁路货源恶性竞争问题,表现为补贴实施后,厦门港海铁联运增量中约30.96%由福州港铁路货源转移。

关键词：海铁联运辐射范围广义费用网络分析补贴政策

Overexpression of micro RNA_(40)8 enhances photosynthesis, growth, and seed yield in diverse plants

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Journal of Integrative Plant Biology 2018年第4期60卷 323-340页

作者： Jiawei Pan Dahui Huang Zhonglong Guo Zheng Kuang He Zhang xinyu xie Zengfeng Ma Shaopei Gao Manuel T.Lerdau Chengcai Chu Lei Li State Key Laboratory of Protein and Plant Gene Research Peking-Tsinghua Center for Life SciencesSchool of Life Sciences and School of Advanced Agricultural SciencesPeking University Rice Research Institute Guangxi Academy of Agricultural Sciences State Key Laboratory of Plant Genomics and National Center for Plant Gene Research(Beijing) Institute of Genetics and Developmental BiologyChinese Academy of Sciences Department of Environmental Sciences University of Virginia

The ability of a plant to produce grain, fruit, or forage depends ultimately on photosynthesis. There have been few attempts, however, to study microRNAs, which are a class of endogenous small RNAs post-transcription- ally programming gene expression, in relation to photosynthetic traits. We focused on miR408, one of the most conserved plant miRNAs, and overexpressed it in parallel in Arabidopsis, tobacco, and rice. The transgenic plants all exhibited increased copper content in the chloroplast, elevated abundance of plastocyanin, and an induction of photosynthetic genes. By means of gas exchange and optical spectroscopy analyses, we showed that higher expression of miR408 leads to enhanced photosynthesis through improving efficiency of irradiation utilization and the capacity for carbon dioxide fixation. Consequently, miR408 hyper-accumulat- ing plants exhibited higher rate of vegetative growth. An enlargement of seed size was also observed in all three species overproducing miR408. Moreover, we conducted a 2-year-two-location field trial and observed miR408 overexpression in rice significantly increased yield, which was primarily attributed to an elevation in grain weight. Taken together, these results demonstrate that miR408 is a positive regulator of photosynthesis and that its genetic engineering is a promising route for enhancing photosynthetic performance and yield in diverse plants.

关键词： and seed yield in diverse plants growth Figure