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公益广告培养中小学生文明行为习惯的路径探索

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宜春学院学报 2025年第1期47卷 116-120,125页

作者：丁业银杨紫馨宜春学院文学与新闻传播学院江西宜春336000

为探究公益广告对中小学生文明行为习惯培养的影响,充分运用文献法、问卷调查法和实地观察法,在某地级市中心城区的多所中小学进行了实地调查。梳理分析中小学校园公益广告传播面临的主要问题和影响因素,提出新媒体环境下中小学校园公... 详细信息

为探究公益广告对中小学生文明行为习惯培养的影响,充分运用文献法、问卷调查法和实地观察法,在某地级市中心城区的多所中小学进行了实地调查。梳理分析中小学校园公益广告传播面临的主要问题和影响因素,提出新媒体环境下中小学校园公益广告“六大”传播路径。通过优化公益广告的内容设置、形式表达、年龄区分、经费投入、家校共育和社会参与等方面,提高中小学校的德育教育水平,依托公益广告的有效传播来切实培养中小学生良好的文明行为习惯。

关键词：校园公益广告德育教育文明行为习惯

Molecular characterization of a proline transporter from Chilo suppressalis

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Insect Science 2011年第5期18卷 495-502页

作者： Jia Huang Shun-Fan Wu Gong-yin ye State Key Laboratory of Rice Biology Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects Instituteof Insect Sciences Zhejiang University Hangzhou China

Proline plays an important role in regulating synaptic neurotransmission in both mammalian and insect nervous systems. The full-length complementary DNA sequences encoding the proline transporter gene （CsProT） and its alternative spliced transcript （CsProT-ST） were cloned from the striped stem borer （SSB）, Chilo suppressalis, one of the most important rice pests in Asia. The comparison of amino acid sequences showed that CsProT is highly similar to the proline transporter isolated from Manduca sexta （MasProT）. The developmental changes of the relative messenger RNA expression levels of CsProT and CsProT-ST genes were examined in SSB. The expression level of CsProT-ST is much higher than that of CsProT in all developmental periods, suggesting that the Y-end spliced variant is the major transcript instead of CsProT. The highest ex- pression level of both genes in the pupal stage means that proline may be involved in some unclear functions in the metamorphosis from pupa to adulthood.

关键词： Chilo suppressalis mRNA expression neuromodulator proline transporter

A novel method for preparing and characterizing graphene nanoplatelets/aluminum nanocomposites

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Nano Research 2018年第3期11卷 1642-1650页

作者： Duosheng Li yin ye Xiaojun Liao Qing H. Qin School of Materials Science and Engineering Nanchang Hangkong University Nanchang 330063 China Research School of Engineering Australian National University Acton ACT2601 Australia

Graphene nanoplatelets/aluminum （GNPs/Al） nanocomposites were fabricated using a novel two-step method. High resolution transmission electron microscope （HRTEM）, Raman, field emission scanning electron microscopy （FESEM）, X-ray diffraction （XRD）, energy dispersive X-ray spectroscopy （EDS）, EDS mapping, and mechanical testing system （MTS） were applied to characterize the microstructure and mechanical properties of the GNPs/Al nanocomposites. The GNPs were homogeneously dispersed in GNPs/Al nanocomposites, and presented a fine interface behavior and microstructure characteristics. A harmful phase, aluminum carbide （Al4C3）, was not observed in significant quantities in the nanocomposite. Compared with pure aluminum, the mechanical properties of the GNPs/Al nanocomposites containing a low volume fraction of GNPs were sharply improved. When 0.5 vol.%, 1.0 vol.%, and 2.0 vol.% GNPs were added to the aluminum matrix, the average compressive strength of GNPs/A1 nanocomposites was 297, 345, and 527 MPa, respectively, which remarkably increased the strength over the original aluminum by 330% to 586%.

关键词： graphene nanoplatelets nanocomposites mechanical properties two-step method

A low-boom and low-drag design method for supersonic aircraft and its applications on airfoils

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Advances in Aerodynamics 2021年第1期3卷 428-454页

作者： Liu-qing ye Zheng-yin ye Kun ye Jie Wu Sheng-jie Miao School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072People’s Republic of China

Sonic boom reduction has been an urgent need for the development of future supersonic transport,because of the heavy damage of noise *** paper provides a novel concept for supersonic aircraft to reduce the sonic boom and drag coefficient,wherein a suction slot near the leading edge and an injection slot near the trailing edge on the airfoil suction surface are *** make sure of a zero net mass flux flow control,the mass flow sucked in near the leading edge is equal to the mass flow injected near the trailing *** diamond and NACA0008 airfoils are adopted as the baseline airfoil to verify the capability of the proposed design *** effects of the suction and injection location,the suction and injection slot size,the mass flow rate and the attack angle on the ground boom signature and drag coefficient are studied in *** results show that the optimized airfoils with the suction and injection have benefits in both sonic boom reduction and wave drag *** the reduction of the sonic boom intensity is more sensitive to the injection near the trailing edge than the suction near the leading *** the viewpoint of aerodynamics,opening the suction and injection slots will have no adverse effect on the aerodynamic performances of the supersonic aircraft and even increase the lift-drag ratio under some *** energy saving,the suction and injection slots can be selectively opened,which are opened when the supersonic aircraft flies over the city but are closed when the aircraft flies over the sea.

关键词： Supersonic flow Sonic boom Supersonic aircraft Optimization Wave drag Low-boom low-drag design

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T型集输管道油水两相流数值模拟

石油工程建设 2025年第1期51卷 59-63页

作者：叶银钟兴龙郜双武中石化西北油田分公司采油一厂新疆巴音郭楞841000

T型三通管是石油管道中重要的管道结构,通过对T型管道内部流场进行数值模拟,可以分析管径比对管道内速度、压力分布以及局部阻力损失的影响。基于COMSOL软件,将混合物模型与RANS(k-ε)算法进行耦合,对T型管内油水两相流动进行二维数值模... 详细信息

T型三通管是石油管道中重要的管道结构,通过对T型管道内部流场进行数值模拟,可以分析管径比对管道内速度、压力分布以及局部阻力损失的影响。基于COMSOL软件,将混合物模型与RANS(k-ε)算法进行耦合,对T型管内油水两相流动进行二维数值模拟,首先建立T型管道模型,得到管内流场的分布情况,而后改变径向支管管径,计算分析流场情况以及局部阻力损失。得到以下结论:①主管与支管的流体汇合前压力和速度保持稳定,汇合后压力先下降随后趋于稳定,速度则先增大后趋于平稳,同时在三通处产生一个高压区和一个低压回流区;②三通出口处的局部速度随着径向支管管径的增大而增大,高压区面积也将随之增大;③分析水平主管的轴向动压、静压和总压可知,主要的局部阻力损失发生在三通处,且随着径向支管管径的增大而增大。

关键词： T型管油水两相数值模拟流场分布局部阻力损失

Linear operators and positive semidefiniteness of symmetric tensor spaces

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Science China Mathematics 2015年第1期58卷 197-212页

作者： LUO Zi Yan QI Li Qun ye yin Yu State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Department of Applied Mathematics The Hong Kong Polytechnic University Department of Management Science and Engineering Stanford University

We study symmetric tensor spaces and cones arising from polynomial optimization and physical *** prove a decomposition invariance theorem for linear operators over the symmetric tensor space,which leads to several other interesting properties in symmetric tensor *** then consider the positive semidefiniteness of linear operators which deduces the convexity of the Frobenius norm function of a symmetric ***,we characterize the symmetric positive semidefinite tensor(SDT)cone by employing the properties of linear operators,design some face structures of its dual cone,and analyze its relationship to many other tensor *** particular,we show that the cone is self-dual if and only if the polynomial is quadratic,give specific characterizations of tensors that are in the primal cone but not in the dual for higher order cases,and develop a complete relationship map among the tensor cones appeared in the literature.

关键词： symmetric tensor symmetric positive semidefinite tensor cone linear operator SOS cone

Research of Power Take-off System for “Sharp Eagle Ⅱ” Wave Energy Converter

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China Ocean Engineering 2019年第5期33卷 618-627页

作者： ye yin WANG Kun-lin YOU Ya-ge SHENG Song-wei Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Guangzhou 510640 China Key Laboratory of Renewable Energy Chinese Academy of Sciences Guangzhou 510640 China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640 China

The " Sharp Eagle” device is a wave energy converter of a hinged double floating body. The wave-absorbing floating body hinges on the semi-submerged floating body structure. Under the action of wave, the wave-absorbing floating body rotates around the hinge point, and the wave energy can be converted into kinetic energy. In this paper, the power take-off system of " Sharp Eagle Ⅱ” wave energy converter (the second generation of " Sharp Eagle”) was studied, which adopts the hydraulic type power take-off system. The 0-1 power generation mode was applied in this system to make the " Sharp Eagle Ⅱ” operate under various wave conditions. The principle of power generation was introduced in detail, and the power take-off system was simulated. Three groups of different movement period inputs were used to simulate three kinds of wave conditions, and the simulation results were obtained under three different working conditions. In addition, the prototype of " Sharp Eagle Ⅱ” wave energy converter was tested on land and in real sea conditions. The experimental data have been collected, and the experimental data and simulation results were compared and validated. This work has laid a foundation for the design and application of the following " Sharp Eagle” series of devices.

关键词： Sharp Eagle Wave Energy Converter power take-off power generation mode hydraulic system

物理解冻技术在肉类及其制品中的应用研究进展

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粮食与油脂 2025年第1期38卷 6-11,16页

作者：吴小桥毛爽阴鑫烨吕静相启森牛力源郑州轻工业大学食品与生物工程学院河南郑州450001 冷链食品加工与安全控制教育部重点实验室河南郑州450001 河南省冷链食品质量安全控制重点实验室河南郑州450001

综述了超声波、磁场、高压静电场、脉冲电场、射频、微波等物理解冻技术的基本原理以及在肉类及其制品解冻中的应用研究现状,以期为物理解冻技术在肉类及其制品领域的开发及工业化应用提供理论参考。

关键词：物理解冻技术肉类及其制品品质研究进展

Detection of food source by PCR analysis of the gut contents of Aldrichina grahami （Aldrich）（Diptera： Calliphoridae） during post-feeding period

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Insect Science 2007年第1期14卷 47-52页

作者： KAI LI GONG-yin ye JIA-yinG ZHU CUI HU Institute of Insect Sciences College of Agriculture and Biotechnology Zhejiang University Hangzhou China

The last meal of sarcophagous maggots may be useful in identifying the species on whose flesh they have fed （the＂host＂species）. The DNA profile of the host species may indeed be detectable in the＂last meal＂. In this paper, mitochondrial DNA analysis of gut contents was used to identify the prior host of post-feeding larvae of Aldrichina grahami （Aldrich）（Diptera： Calliphoridae）. A modified logistic equation was fitted to estimate the probability of identifying the host under five different constant temperatures （16, 20, 24, 28 and 32 ℃）. Our results shows that the detected time ranged from a maximum of 24 h at 32℃ to 42 h at 16℃ and a minimum of 12 h at 32~C to 30 h at 16℃. Furthermore, the host detection time was also calculated to give the maximal time after larval hatching from the egg. These results indicate that, in criminal cases where the maggots stray from the corpse, the last meal of the larvae should not be overlooked as potentially critical evidence.

关键词： Cytochrome b gene detectable time forensic entomology gut post-feeding