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岭南华侨龙舟文化——水上竞技的传统与现代演变

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当代体育科技 2024年第16期14卷 123-125页

作者：胡进城陈子凝广东理工学院广东肇庆526000 五邑大学广东江门529000

该文探讨了岭南华侨龙舟文化的传统与现代演变,以及在国际传播中的角色和作用。岭南华侨龙舟文化作为中国传统文化的代表之一,具有悠久的历史和丰富的文化内涵。通过国际龙舟竞技赛事和文化交流活动,岭南华侨龙舟文化成功地在世界范围... 详细信息

该文探讨了岭南华侨龙舟文化的传统与现代演变,以及在国际传播中的角色和作用。岭南华侨龙舟文化作为中国传统文化的代表之一,具有悠久的历史和丰富的文化内涵。通过国际龙舟竞技赛事和文化交流活动,岭南华侨龙舟文化成功地在世界范围内得到认可和传播,促进了中外文化的交流与合作。然而,该文化也面临一些挑战,如文化传承与保护、商业化影响等。随着现代社会的发展,岭南华侨龙舟文化也发生了一些变化,它在现代社会背景下不断寻求创新与发展。该文提出了教育与传承、创新与发展、社区参与共建等建议,希望能够推动龙舟文化在现代社会中继续焕发新的生命力和魅力,让世界更多地了解和欣赏中国传统文化的独特魅力。

关键词：岭南华侨龙舟文化水上竞技传承与演变

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Review of Trajectory Design and Optimization for Jovian System Exploration

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Space(Science & Technology) 2023年第1期3卷 279-292页

作者： Hongwei Yang jincheng hu Xiaoli Bai Shuang Li College of Astronautics Nanjing University of Aeronautics and AstronauticsNanjing 211106China Rutgers The State University of New JerseyPiscatawayNJ 08854USA

Jupiter exploration is one of the focuses of deep space exploration in the near *** and optimization of trajectories in the Jovian system are crucial technologies for Jupiter exploration missions due to the unique and challenging multi-body dynamical *** methodologies have been proposed and ***,there is a lack of comprehensive review of these methodologies,which is unfavorable for further developing new design techniques and proposing new mission *** review provides a systematic summarization of the past and state-of-art methodologies for 4 main exploration phases,including Jupiter capture,the tour of the Galilean moons,Jupiter global mapping,and orbiting around and landing on a target *** each exploration phase,the related methods are categorized according to the fundamental *** advantages and capabilities of the methods are described or analyzed,revealing the research ***,a prospect of future development of the methods is presented,aiming at providing references for further studies on trajectory design and optimization in the Jovian system.

关键词： Jupiter exploration revealing

Coupling Enhancement of THz Metamaterials Source with Parallel Multiple Beams

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Chinese Journal of Electronics 2023年第4期32卷 678-682页

作者： ZHANG Kaichun FENG Yuming ZHAO Xiaoyan hu jincheng XIONG Neng GUO Sidou TANG Lin LIU Diwei THz Center School of Electronic Science and Engineering University of Electronic Science and Technology of China

In this paper, we propose a terahertz radiation source over the R-band(220–325 GHz) based on metamaterials(MTMs) structure and parallel multiple beams. The effective permittivity and permeability of the slow-wave structure can be obtained through the S-parameter retrieval approach, using numerical simulation. Additionally, the electromagnetic properties of the MTMs structure are analyzed, including the dispersion and the coupling impedance. Furthermore, we simulate the beamwave interaction of the backward oscillator(BWO) with MTMs structure and parallel multiple beams by 3-D particle-in-cell code. It is observed that parallel multiple beams can highly enhance the beam-wave interaction and greatly enlarge the output power. These results indicate that the saturated(peak) output power is approximately63W with the efficiency of roughly 6% at the operating frequency of 231 GHz, under the beam voltage of 35 kV and total current of 30 mA(6-beam) respectively. Meanwhile, the BWO can generate power of 10–80 W in the tunable frequency of 220–240 GHz.

关键词： Couplings Simulation Voltage Terahertz radiation Metamaterials Scattering parameters Impedance

Microstructural evolution of 405 stainless steel under high temperature

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Baosteel Technical Research 2015年第2期9卷 36-41页

作者： hu jincheng SONG Hongmei Research Institute Baoshan Iron & Steel Co.Ltd.

The ferrite-to-austenite phase transformation temperature of SA240-405 stainless steel was measured using the thermodilatometry method and calculated using Thermo-Calc. In addition, the effect of temperature and the soaking time on the microstructural evolution was investigated for various quenching and tempering treatments. The results indicated that the ferrite-to-austenite transformation of this steel started between 795℃ and 832 ℃ and finished between 910 ℃ and 925℃. When the specimens were annealed above 1050℃, the austenite gradually transformed into ferrite; consequently, the content of as-quenched martensite decreased with increasing temperature. Moreover, when the specimens were quenched between 950 ℃ and 980℃, a microstructure of duplex phases comprising ferrite and martensite was obtained. Relatively high B-scale of Rockwell hardness（ HRB ） values were observed for quenching times of 30-60 minutes; then, the hardness gradually decreased with increasing quenching time. Tempering at 730 ℃ resulted in ferrite and tempered martensite, and no obvious residual austenite was observed. In addition, the hardness gradually decreased with increasing tempering time.

关键词： 405 stainless steel microstructure evolution phase transformation

主动半监督RVFLN方法在重介质选煤过程的应用

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中国矿业大学学报 2022年第6期51卷 1232-1240页

作者：胡金成中煤科工集团常州研究院有限公司江苏常州213015 天地(常州)自动化股份有限公司江苏常州213015

实际选煤过程中一些关键质量参数往往依靠人工化验,使得感知数据稀疏,即标签数据较少.建立数据驱动技术的选煤产品质量软测量模型需要采用半监督学习(SSL)方法.然而,SSL对提高模型质量比较有限,容易导致建立的数据驱动模型存在较大误差... 详细信息

实际选煤过程中一些关键质量参数往往依靠人工化验,使得感知数据稀疏,即标签数据较少.建立数据驱动技术的选煤产品质量软测量模型需要采用半监督学习(SSL)方法.然而,SSL对提高模型质量比较有限,容易导致建立的数据驱动模型存在较大误差.本文充分分析样本信息度、样本代表性与过程非线性对建模精度的重要性,将随机向量函数链接网络(RVFLN)与基于多样性评价指标的主动学习(AL)策略相结合,提出一种主动半监督随机向量函数链接网络(ASS-RVFLN)的选煤灰分软测量建模方法.所提方法首先通过回归问题进行试验研究,验证了在获得较好模型性能时能够有效减少标注负担;然后应用于煤炭工业重介质选煤过程中的灰分估计,表明其有效性与工业应用的潜力.

关键词：选煤过程半监督学习随机向量函数链接网络主动学习软测量建模

一家典型海水工厂化循环水养殖系统运行效果分析——以半滑舌鳎为例

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天津农学院学报 2024年第2期31卷 71-77页

作者：马国宁田云臣胡金城赵晴晴隋金柱郑杰天津农学院水产学院天津300392 天津农学院计算机与信息工程学院天津300392 天津市水产生态及养殖重点实验室天津300392 天津海升水产养殖有限公司天津300450

循环水养殖系统作为一种新型高密度养殖方式具有养殖水体环境可控、系统运行平稳、技术安全可靠、高度节水节地等优点。本文以天津市滨海新区某企业养殖半滑舌鳎为例,对循环水养殖系统的运行效果进行分析。结果表明:半滑舌鳎的养殖密度... 详细信息

循环水养殖系统作为一种新型高密度养殖方式具有养殖水体环境可控、系统运行平稳、技术安全可靠、高度节水节地等优点。本文以天津市滨海新区某企业养殖半滑舌鳎为例,对循环水养殖系统的运行效果进行分析。结果表明:半滑舌鳎的养殖密度为(20~25)kg/m^(2),初始平均质量为5 g,利用循环水养殖系统养殖407 d,最终平均质量为1079 g,存活率为29.1%。通过水质检测分析,氨氮平均去除率为64%;亚硝酸盐平均去除率为58%;弧菌和细菌的灭杀率为99%;pH值保持在7.0~8.5;盐度维持在18~35。经济性分析结果表明,该海水工厂化循环水养殖系统的可行性和经济性良好,适宜在沿海地区大力推广。

关键词：循环水养殖系统运行效果半滑舌鳎

The Effect of Tensile Deformation on Strain Induced Martensite and Pitting Corrosion Resistance for a New Developed Lean Duplex Stainless Steel

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The Effect of Tensile Deformation on Strain Induced Martensi...

Effect of deformation temperature on transformation-induced plasticity effect of lean duplex stainless steel

第十届中国钢铁年会暨第六届宝钢学术年会

作者： hu jincheng Song Hongmei

Different tensile deformation was imposed to the new lean duplex stainless steel with chemical composition of 20.5Cr-4Mn-0.16N, and then the strain induced martenstie(SIM) was studied by the combination of ferrite detector, X-ray diffraction, scanning electric microscope and transmission electric microscope. The effect of strain induced martensite(SIM) on pitting corrosion resistance was also investigated by tests for pitting potential and weight loss rate in FeCl solution. The results showed that strain induced martensite transformed through path of γ→ε→α’, and about 17.6% α’ martensite formed when the tensile deformation increased to 20%. Meanwhile, the SIM had no evident effect on the pitting corrosion resistance.

关键词： stain induced martensite lean duplex stainless steel pitting corrosion

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Baosteel Technical Research 2014年第3期8卷 42-46页

作者： ZHANG Wei ZhuANG Wei hu jincheng Research Institute Baoshan Iron & Steel Co.Ltd. Special Steel Company Baosteel Group

Effects of deformation temperature on the mechanical properties and microstructure of lean duplex stainless steels B2102 and S32101 have been investigated. It was found that the strength decreased continuously with increases in temperature from -60 ℃ to 100 ℃. The strength of S32101 was higher than that of B2102 owing to its higher nitrogen content. Plasticity of B2102 increased with an increase in deformation temperature from - 60 ℃ and reached the optimal elongation ratio of 49% - 54% after deformation at 20 - 50 ^（2. Martensite transformation was observed during deformation due to the transformation-induced plasticity effect. The optimal elongation was achieved at deformation temperatures close to the Md（3O/50） temperatures of 62 ℃ and 6 ℃ for B2102 and S32101. respectively.

关键词： lean duplex stainless steel transformation-induced plasticity martensite transformation deformationtemperature

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陶瓷增材制造在生物医学领域的应用研究进展

中国医学工程 2024年第8期32卷 42-47页

作者：熊征宇马国芝张超刘润哲张亚辉胡锦程吴劲男湖南师范大学工程与设计学院湖南长沙410006 湖南师范大学树达学院湖南长沙410006

陶瓷增材制造技术的日益成熟,将推动其产品在生物医学领域的应用。该文介绍了陶瓷增材制造的主要技术方法,回顾了陶瓷增材制造在口腔全瓷修复体和骨组织工程领域的应用研究现状,最后指出陶瓷增材制造产品应用在生物医学领域存在的问题,... 详细信息

陶瓷增材制造技术的日益成熟,将推动其产品在生物医学领域的应用。该文介绍了陶瓷增材制造的主要技术方法,回顾了陶瓷增材制造在口腔全瓷修复体和骨组织工程领域的应用研究现状,最后指出陶瓷增材制造产品应用在生物医学领域存在的问题,并对其应用研究前景进行了展望。

关键词：增材制造陶瓷材料口腔修复体骨组织生物医学