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Observation of Doppler shift f_(D) modulated by the internal kink mode using conventional reflectometry in the EAST tokamak

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Plasma Science and Technology 2024年第3期26卷 1-9页

作者：李恭顺张涛耿康宁文斐叶凯萱徐立清朱翔张学习钟富彬周振杨书琪周子强喻琳兰婷王守信提昂张寿彪刘海庆李国强高翔 the EAST Team Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China Advanced Energy Research Center Shenzhen UniversityShenzhen 518060People's Republic of China University of Science and Technology of China Hefei 230026People's Republic of China

In this paper we present a new experimental observation using a conventional reflectometry technique,poloidal correlation reflectometry(PCR),in the Experimental Advanced Superconducting Tokamak(EAST).The turbulence spectrum detected by the PCR system exhibits an asymmetry and induced Doppler shift f_(D)during the internal kink mode(IKM)rotation *** Doppler shift f_(D)is the target measurement of Doppler reflectometry,but captured by conventional *** show that the Doppler shift f_(D)is modulated by the periodic changes in the effective angle between the probing wave and cutoff layer normal,but not by plasma *** fishbone mode and saturated long-lived mode are typical IKMs,and this modulation phenomenon is observed in both ***,the value of the Doppler shift f_(D)is positively correlated with the amplitude of the IKM,even when the latter is ***,the positive and negative frequency components of the Doppler shift f_(D)can be asymmetric,which is related to the plasma configuration.A simulated analysis is performed by ray tracing to verify these *** results establish a clear link between f_(D)and IKM rotation,and are helpful for studying the characteristics of IKM and related physical phenomena.

关键词： microwave reflectometry Doppler shift internal kink mode

Electric Field and Ion Diffusion Triggered Precisely Regulated Construction of Micron-scale Water-based Polymer Films:a Detailed Mechanistic Exploration

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Chemical Research in Chinese Universities 2022年第6期38卷 1435-1445页

作者： WANG Dan LIU Jinfang yang shuqi JI Xin WANG Yuliang OMONIYI Ahmed Olalekan ZHANG Jianfu SU Zhongmin School of Materials Science and Engineering Changchun University of Science and TechnologyChangchun130022P.R.China School of Chemistry and Environmental Engineering Changchun University of Science and TechnologyChangchun130022P.R.China Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry Changchun University of Science and TechnologyChangchun130022P.R.China

Water-based polymer films can be readily deposited onto a wide range of metallic materials as an environmentally friendly coating through the demulsification-induced fast solidification(DIFS)***,there is still a lack of in-depth understanding of the demulsification process of the water-based emulsions and their deposition ***,we demonstrate that the build-up process of the commercial water-based micron-scale waterborne polyurethane,polyvinyl acetate,polyurethane acrylate,and natural rubber polymer films is affected by the collective effect of electric field and ion diffusion exerted by anode-cathode electrode pairs,applied voltage,conduction time,electrode distance,and emulsion species.A structural investigation of as-prepared polymer films allows us to propose two new structure build-up *** a flat film deposition,isolated islands are formed first and grow on the substrate surface,and eventually,their mutual coalescence forms the final ***,for a convex layer formation,the layer is first formed in the middle of the substrate and then grows toward the sides of the convex structure of the *** results presented in this work expand the understanding of the mechanism of the DIFS process and may provide some new insights into structure-oriented multifunctional material design.

关键词： Polymer film Emulsion Demulsification-induced fast solidification Mechanism

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基于混合驱动的分离罗拉运动轨迹规划研究

纺织器材 2024年第4期51卷 6-10页

作者：张玉香吕传硕杨淑启王延蒙济宁职业技术学院机电工程系山东济宁272073

针对当前棉精梳机分离接合机构运动输出特性固定、振动大等问题,分析棉精梳机分离罗拉分离接合工艺,确定分离罗拉运动的位移关键点位置,根据差动轮系的运动规律提出交替驱动和分段驱动2种动力分配方案,并采用三次样条曲线作为交替驱动... 详细信息

针对当前棉精梳机分离接合机构运动输出特性固定、振动大等问题,分析棉精梳机分离罗拉分离接合工艺,确定分离罗拉运动的位移关键点位置,根据差动轮系的运动规律提出交替驱动和分段驱动2种动力分配方案,并采用三次样条曲线作为交替驱动位移曲线、S型加减速曲线作为分段驱动位移曲线,通过对比分析得到最佳分离罗拉运动轨迹。指出:当设定棉纤维长度为30 mm时,2种驱动方案均能满足分离接合要求;采用混合驱动机构对分离罗拉高速正反转运动进行分解,实现伺服电机混合驱动分离罗拉,其运动性能更佳。

关键词：混合驱动棉精梳机分离罗拉差动轮系三次样条曲线 S型加减速曲线分离接合

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学科融合背景下地理与化学跨学科教学探究——以襄阳五中校园水质调查为例

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地理教学 2024年第12期 31-34页

作者：龚正权杨淑琪李苑君赵娥红饶青莹王秋月李权国湖北省襄阳市第五中学湖北襄阳441057 广东省科学院广州地理研究所广东广州510070 湖北文理学院资源环境与旅游学院湖北襄阳441053

化学学科重视证据推理和微观探析,地理学科重视综合思维和地理实践力。本文搭建“情境线—问题线—知识线—活动线—素养线”的教学思路,进行地理与化学的跨学科教学尝试,设置以“探究校园水质影响因素”为主题的地理室外课,指导学生采... 详细信息

化学学科重视证据推理和微观探析,地理学科重视综合思维和地理实践力。本文搭建“情境线—问题线—知识线—活动线—素养线”的教学思路,进行地理与化学的跨学科教学尝试,设置以“探究校园水质影响因素”为主题的地理室外课,指导学生采集校内不同水域水样,对比分析水体的透明度、酸碱度、总溶解固体等指标。通过跨学科教学,教师引导学生融会贯通,达到了解决现实环境问题的学习目的。

关键词：学科融合跨学科教学地理实践力水质影响因素高中地理高中化学

Mechanical Property and Microstructure of Cement Mortar with Carbonated Recycled Powder

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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 689-697页

作者：丁亚红张美香 yang Xiaolin XU Ping SUN Bo GUO shuqi Department of Civil Engineering Henan Polytechnic UniversityJiaozuo 454150China College of Architectural Engineering Xinyu UniversityXinyu 336500China

Carbonated recycled powder as cementitious auxiliary material can reduce carbon emissions and realize high-quality recycling of recycled *** this paper,microscopic property of recycled powder with three carbonation methods was tested through XRD and SEM,the mechanical property and microstructure of recycled powder mortar with three replacement rates were studied by ISO method and SEM,and the strengthening mechanism was *** results showed that the mechanical property of recycled powder mortar decreased with the increasing of replacement *** is suggested that the replacement rate of recycled powder should not exceed 20%.The strength index and activity index of carbonated recycled powder mortar were improved,in which the flexural strength was increased by 27.85%and compressive strength was increased by 20%at the *** powder can be quickly and completely carbonated,and the improvement effect of CH pre-soaking carbonation was the *** activity index of carbonated recycled powder can meet the requirements of Grade II technical standard for recycled *** results revealed the activation mechanism of carbonated recycled powder such as surplus calcium source effect,alkaline polycondensation effect and carbonation enhancement effect.

关键词： recycled powder carbonation activation compound carbonation activity index mechanical property microstructure

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浙江楠1年生容器苗质量分级研究

湖北林业科技 2024年第2期53卷 1-4页

作者：高大雄杨姝琦荀继刚兰竹刘德彪李振芳湖北省太子山林场管理局京山431819 湖北省林业科学研究院武汉430075 湖北省速生丰产林工程技术研究中心武汉430075

本研究以浙江楠容器苗为试验材料,采用地径和苗高作为分级指标,应用平均值±标准差法和逐步聚类法开展了1 a生实生苗的苗木质量分级研究,发现标准差法计算的Ⅰ级苗下限值偏高,逐步聚类法计算的Ⅱ级苗下限值偏高;综合确定浙江楠1 a生容... 详细信息

本研究以浙江楠容器苗为试验材料,采用地径和苗高作为分级指标,应用平均值±标准差法和逐步聚类法开展了1 a生实生苗的苗木质量分级研究,发现标准差法计算的Ⅰ级苗下限值偏高,逐步聚类法计算的Ⅱ级苗下限值偏高;综合确定浙江楠1 a生容器苗质量分级标准:Ⅰ级苗地径0.24 cm以上,苗高13.0 cm以上;Ⅱ级苗地径在0.15~0.24 cm之间,苗高在8.0~13.0 cm之间;Ⅰ、Ⅱ级苗为合格苗,确定的合格苗木接近85%的控制率。

关键词：浙江楠容器苗分级标准平均值±标准差法逐步聚类

A multiple flame-retardant,early fire-warning,and highly sensitive thread-shaped all-fabric-based piezoresistive sensor

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Science China(Technological Sciences) 2024年第4期67卷 1151-1159页

作者： LI WeiBiao ZHANG Shuai MA shuqi WANG JiaCheng WANG Huan yang QiRong SONG YongTao ZHU Jie North China Institute of Aerospace Engineering Langfang 065000China Langfang Fire and Rescue Division of Hebei Province Langfang 065000China School of Information Science and Engineering Xinjiang College of Science and TechnologyKorla 841000China

In the artificial intelligence age,multifunctional and intelligent fireproof fabric-based electronics are urgently ***,a novel thread-shaped all-fabric-based piezoresistive sensor(denoted as TAFPS)with properties such as flame retardancy,firewarning,and piezoresistivity is proposed,which is composed of an inner nickel-plated fabric electrode,a multifunctional double helix fabric,and an external flame-retardant encapsulation *** to the multiple flame-retardant properties of glass fiber tubular fabric,aminated carbon nanotubes(ACNTs),and ammonium polyphosphate,the char residue of the TAFPS reaches40.3 wt%at 800℃.In addition,the heat-sensitive effect of ACNTs during combustion causes a rapid decrease in the TAFPS resistance,triggering the fire alarm system within 2 ***,benefiting from the force-sensitive behavior of the double helix layer and tightly wrapped pattern of the external heat-shrinkable tubular fabric,TAFPS demonstrated a high sensitivity of4.40 kPa^(-1)(0–5.81 k Pa)and good stability for 10000 *** its excellent flame resistance,high sensitivity,and agreeable stability,the developed TAFPS can be integrated into fire suits to monitor the exercise training process and the external fire *** work offers a novel approach for fabricating all-fabric-based piezoresistive sensors in the future for fire prevention and fire alarms,with promising applications in fire protection,the Internet of Things,and smart apparel.

关键词： all-fabric piezoresistive sensor multiple flame retardancy agile fire-warning high sensitivity

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Refractive index sensing based on a twisted nano-kirigami metasurface

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Photonics Research 2024年第2期12卷 218-225页

作者： shuqi QIAO XIAOCHEN ZHANG QINGHUA LIANG yang WANG CHANG-YIN JI XIAOWEI LI LAN JIANG SHUAI FENG HONGLIAN GUO JIAFANG LI School of Science Minzu University of ChinaBeijing 100081China Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(Ministry of Education) Beijing Key Laboratory of Nanophotonics&Ultrafine Optoelectronic Systemsand School of PhysicsBeijing Institute of TechnologyBeijing 100081China Laser Micro/Nano Fabrication Laboratory School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081China

Plasmonic sensing technology has attracted considerable attention for high sensitivity due to the ability to effectively localize and manipulate *** this study,we demonstrate a refractive index(RI)sensing scheme based on open-loop twisted meta-molecule arrays using the versatile nano-kirigami *** sensing has the features of a small footprint,flexible control,and simple *** engineering the morphology of meta-molecules or the RI of the ambient medium,the chiral surface lattice resonances can be significantly enhanced,and the wavelength,intensity,and sign of circular dichroism(CD)can be flexibly *** the relation between the wavelength of the CD peak and the RI of the superstrate,the RI sensor achieves a sensitivity of 1133 nm/***,we analyze these chiroptical responses by performing electromagnetic multipolar decomposition and electric field *** study may serve as an ideal platform for applications of RI measurement and provide new insights into the manipulation of chiral light–matter interactions.

关键词： twisted chiral index

场域理论视域下中医药文化在中小学校园传播路径——基于拉斯韦尔5W模式分析

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医学教育研究与实践 2024年第4期32卷 439-447页

作者：谭浩王军永刘雨璇周佳佳杨舒琪郑江山焦辉川王力江西中医药大学经济与管理学院江西南昌330004 江西中医药大学中医药与大健康发展研究院江西南昌330004

提升中医药文化自信是坚定中华民族文化自信的重要推手,中医药文化校园传播是提升中医药文化自信的有效路径。本研究以分析中医药文化校园传播的路径为切入点,以布迪厄场域理论为情境分析框架,剖析当下中医药文化校园传播的内部结构、... 详细信息

提升中医药文化自信是坚定中华民族文化自信的重要推手,中医药文化校园传播是提升中医药文化自信的有效路径。本研究以分析中医药文化校园传播的路径为切入点,以布迪厄场域理论为情境分析框架,剖析当下中医药文化校园传播的内部结构、各主体持有的资本、各主体的行为惯习。研究发现,中医药文化进校园场域中的主体包括行政部门、中小学校、中小学生三部分。行政部门位于场域中心位置,在经济资本与社会资本方面存在显著优势,且行为惯习有一定的权威性与强制性色彩;中小学校占据次中心位置,在文化资本方面具备优势,行为惯习兼具“上位者”与“下位者”的特征;中小学生处于边缘位置,其家长的符号资本可能衍生为对中小学生的符号暴力,在行为惯习方面存在“被教育者”的倾向。在此基础上,以拉斯韦尔5W传播模式为指导,提出中医药文化校园传播的推进路径。传播主体方面,提升中医药文化进校园传播主体间协同,培养高素质中医药文化进校园传播队伍;传播内容方面,选择高质量中医药文化进校园传播内容,选择符合中小学生特点的适宜传播内容;传播媒介方面,创新性融合现有媒介于中医药文化传播,构建多渠道中医药文化进校园传播矩阵;传播受众方面,扩大中医药文化进校园的传播受众范围,加强中医药文化进校园传播受众的互动;传播效果方面,多维度考核中医药文化进校园传播效果,评估并改进中医药文化进校园传播活动。

关键词：中医药文化场域理论拉斯韦尔5W模式