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Robust textile-based spoof plasmonic frequency scanning antenna for on-body IoT applications

Science China(Information Sciences) 2024年第8期67卷 269-284页

作者： Zhao-Min CHEN jun-lin zhan Hao CHEN Ya LI Hongjun HE Wu YANG Zhen-Guo LIU Wei-Bing LU State Key Lab of Millimeter Waves School of Information Science and EngineeringSoutheast University Center for Flexible RF Technology Frontiers Science Center for Mobile Information Communication and SecuritySoutheast University Future Research Laboratory China Mobile Research Institute Purple Mountain Laboratories

Securing a comfortable, wearable compact frequency beam scanning antenna(FBSA) with robustness to deformation, low specific absorption rate(SAR), and good coverage of the surrounding environment for Internet of Things(IoT) applications, such as on-body navigation and wireless communication is an emerging challenge. In this work, a robust textile-based spoof plasmonic frequency scanning antenna utilizing higher-order modes is presented, which is also robust to deformation caused by the activities of the human body. The innovative design of the element ensures the high-efficiency transmission of the fundamental mode of spoof surface plasmon polaritons(SSPP) structure, providing the potential of being a multifunctional composite device in the compact on-body network. Besides, an artificial magnetic conductor(AMC) is designed underneath the SSPP structure, obtaining a low SAR value(0.113 W/kg), which ensures the safety of users. As a practical realization of this concept, a textile-based spoof plasmonic antenna was fabricated in the microwave regime and the performed experimental results show the proposed antenna has a single-beam radiation characteristic with a 70° beam scanning angle range when the frequency is 4.7–6.0 GHz with a high average realized gain of 13.15 dBi. And it still maintains a steady performance when faced with structure deformation, which proves its robustness. Wireless communication quality experiments are performed to demonstrate the proposed antenna can measure the angles of targets and realize wireless signal transmission to specific targets as the frequency varies, it may find great potential in the field of on-body IoT applications.

关键词： frequency beam scanning antenna (FBSA) Internet of Things (IoT) on-body communication spoof surface plasmon polaritons (SSPP) textile-based antenna

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Development of Colloidal Quantum Dots based Light-Emitting Diodes

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物理学进展 2013年第1期33卷 24-41页

作者： He Shao-Jian lin jun Tan zhan-Ao State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of Renewable Energy North China Electric Power University Beijing 102206 China

胶体量子点因其性质稳定、可溶液加工、发光颜色易于调节、色彩饱和度高等优点在固体照明、平板显示、红外通讯等领域引起人们高度关注。本文详细介绍了最近胶体量子点电致发光领域取得的重要进展,包括基于II-VI族(CdSe、CdTe、PbS、PbS... 详细信息

胶体量子点因其性质稳定、可溶液加工、发光颜色易于调节、色彩饱和度高等优点在固体照明、平板显示、红外通讯等领域引起人们高度关注。本文详细介绍了最近胶体量子点电致发光领域取得的重要进展,包括基于II-VI族(CdSe、CdTe、PbS、PbSe),III-V族(InAs、InP),和I-III-VI族(CuInS、CuInSe)的量子点电致发光二极管。

关键词：物理学进展征订启事征稿

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不同中主应力条件下粗粒土应力变形特性试验研究

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岩土工程学报 2016年第11期38卷 2078-2084页

作者：潘家军程展林余挺江洎洧左永振徐晗长江水利委员会长江科学院湖北武汉430010 水利部岩土力学与工程重点实验室湖北武汉430010 中国电建集团成都勘测设计研究院四川成都610072

采用长江科学院大型真三轴仪,对粗粒土进行了一系列不同中主应力系数条件下的真三轴试验和平面应变试验,研究了中主应力对粗粒土的应力变形的影响规律。试验结果表明,中主应力比b一定时,应力–应变关系曲线的斜率和峰值强度随着固结压... 详细信息

采用长江科学院大型真三轴仪,对粗粒土进行了一系列不同中主应力系数条件下的真三轴试验和平面应变试验,研究了中主应力对粗粒土的应力变形的影响规律。试验结果表明,中主应力比b一定时,应力–应变关系曲线的斜率和峰值强度随着固结压力的增大而增加,在低围压条件下,体变关系曲线在加载过程中表现为先剪缩后剪胀的特性,而在高围压下,整个加载过程中表现剪缩的特性;固结压力一定时,随着b值的增大,应力在峰值后的软化现象愈加明显,体变全过程曲线表现出剪胀特征对应的固结压力越来越低,小主应变–大主应变关系曲线的斜率绝对值增大。研究成果可为进一步研究粗粒土的本构模型奠定基础。

关键词：粗粒土真三轴中主应力试验应力应变

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Revolutionizing breast cancer detection:Advances in fluorescent probe technology

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Nano Research 2025年第1期18卷 653-674页

作者： Qian Gao lin Tang jun zhan Yiyuan Xue Feng Luo State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041China Emergency Obstetrics and Gynecology West China Second University HospitalSichuan UniversityChengdu 610041China Department of Obstetrics and Gynecology West China Second University HospitalSichuan UniversityChengdu 610041China Department of Prosthodontics West China School of StomatologySichuan UniversityChengdu 610041China

With the increasing incidence of breast cancer globally,there is an urgent demand for enhanced diagnostic and therapeutic *** comprehensive review explores advancements in fluorescent probe technology for breast cancer imaging and early *** probes offer unparalleled sensitivity and specificity in detecting cancer biomarkers,enabling early diagnosis and delineation of tumor margins during *** categorize these probes into molecular,nano,ratiometric,the second near-infrared window(NIR-II),and multifunctional varieties,each with unique capabilities for targeting specific cancer *** review highlights recent innovations in probe design,emphasizing their applications in pathogenesis studies,drug development,precision medicine,and fluorescence-guided *** their promising clinical potential,challenges such as safety,biomarker targeting accuracy,system compatibility,and clinical translation *** these hurdles is crucial for the integration of fluorescent probes into standard cancer care,aiming to improve treatment outcomes and patient quality of life.

关键词： breast cancer fluorescent probes imaging early diagnosis biomarker

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An embedded electron current layer observed at the edge of the plasma sheet in the Earth’s magnetotail

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Earth and Planetary Physics 2025年第1期9卷 148-158页

作者： ChenChen zhan RongSheng Wang QuanMing Lu San Lu XinMin Li Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences(CAS)Center for Excellence in Comparative Planetology/CAS Key Laboratory of Geospace Environment/Anhui Mengcheng National Geophysical Observatory University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China

The formation of an embedded electron current sheet within the magnetotail plasma sheet has been poorly *** this article,we present an electron current layer detected at the edge of the magnetotail plasma *** ions were demagnetized inside the electron current layer,but the electrons were still frozen in with the magnetic field ***,this decoupling of ions and electrons gave rise to a strong Hall electric field,which could be the reason for the formation of the embedded thin current *** magnetized electrons,the absence of the nongyrotropic electron distribution,and negligible energy dissipation in the layer indicate that magnetic reconnection had not been triggered within the embedded thin current *** highly asymmetric plasma on the two sides of the current layer and low magnetic shear across it could suppress magnetic *** observations indicate that the embedded electric current layer,probably generated by the Hall electric field,even down to electron scale,is not a sufficient condition for magnetic reconnection.

关键词： magnetotail plasma sheet magnetic reconnection

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Analysis of PROFIBUS-DP Network Delay and Its Influence on the Performance of Control Systems

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Wuhan University Journal of Natural Sciences 2005年第5期10卷 877-882页

作者： TAO jun WANG zhan-lin School of Automation Science Beihang University Beijing 100083 China

This paper analyzes PROFIBUS-DP network delay in detail and presents the calculational formula of its maximum time-delay, which is significant to the research of PROFIBUS-DP. At the same time, the paper puts forward a method of simplifying the network induced time-varying indeterminate system according to the features of the network. Through the analysis of a pump-control-motor system which is composed of PROFIBUS-DP network, it illustrates the network＇s influence on the performance of control systems. This method helps to design and analyze the network＇s influence on the performance of control systems, which is of considerable practical value in a time when network control systern is widely used.

关键词： network delay analysis network control system deterministic control

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Integrating lipidomics and gut microbiota to study the anti-hyperlipidemia effect of Sargentodoxae Caulis extract

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Traditional Medicine Research 2025年第1期10卷 1-11页

作者： Xiao-Xiao zhang Li Jia Xiu-jun zhan Charity Ngina Qing-Rui zhang Xiao-Ge Li Qi-Bao Jiang Shi Bai Miao-Miao Jiang National Key Laboratory of Chinese Medicine Modernization Tianjin University of Traditional Chinese MedicineTianjin 301617China Haihe Laboratory of Modern Chinese Medicine Tianjin 301617China School of Medicine Taizhou UniversityTaizhou 318000China.

Background:Sargentodoxae Caulis(SC)is the vine stem of Sargentodoxa Cuneata(Oliv.)Rehd.&*** in ***,and it in traditional Chinese medicine has been known for promoting blood circulation and removing blood stasis as recorded in the ancient book“Illustrated Classics of Materia Medica”.It has been used effectively to treat blood stasis too in modern clinical ***,the anti-hyperlipidemia effect of SC is not fully *** paper aims at exploring the use of SC stems to improve the balance of blood lipids in the body,and its new role in treating ***:The effects of SC extract on hyperlipidemia were explored by combining lipidomics and gut ***,we explored the potential mechanism of SC in treating hyperlipidemia by pathway ***:The results showed that the stem extract of SC could restore the physiological and biochemical indices of hyperlipidemia in mice,as well as repair the morphological and structural damage to *** to the Model group,the SC extract significantly reduced the liver index,epididymal fat index,and Lee’s *** also significantly decreased serum levels of total cholesterol,triglycerides,low-density lipoprotein cholesterol,peroxisome proliferator-activated receptor gamma(PPAR-γ),D-lactate,and free fatty acids,while significantly increasing the relative content of peroxisome proliferator-activated receptor alpha(PPAR-α).These changes were statistically ***-targeted lipidomics,based on LC-MS,were utilized to investigate the lipid metabolism characteristics in serum,liver,and epididymal fat of the *** was observed that,compared to the blank group,the Model group exhibited significant changes primarily in glycerol lipids and *** treatment group also displayed alterations in these lipids.A total of 38,81,and 27 differential lipids were identified in serum,liver,and epididymal fat samples,*** these,14 common differenti

关键词： hyperlipidemia Sargentodoxae Caulis lipidomics intestinal flora

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恐伤孕鼠所产80日龄仔鼠情志与海马区去甲肾上腺素和肾上腺素水平的相关性研究

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中国全科医学 2017年第23期20卷 2875-2878页

作者：李新民杨丽萍万海娇朱江慧侯俊林詹向红河南中医药大学中西医结合基础学科河南省郑州市450046

目的探讨妊娠期恐伤刺激对其80日龄仔鼠情志和海马区去甲肾上腺素(NE)、肾上腺素(EP)的影响,并探讨两者的相关性。方法 2015年1月—2016年3月,选取80日龄SPF级Wistar大鼠59只(雌鼠34只,雄鼠25只),采用Morris水迷宫实验评价其认知水平。... 详细信息

目的探讨妊娠期恐伤刺激对其80日龄仔鼠情志和海马区去甲肾上腺素(NE)、肾上腺素(EP)的影响,并探讨两者的相关性。方法 2015年1月—2016年3月,选取80日龄SPF级Wistar大鼠59只(雌鼠34只,雄鼠25只),采用Morris水迷宫实验评价其认知水平。选取认知基线水平一致的30只雌鼠按照随机数字表法分为模型组和对照组,各15只,另选取认知基线水平一致且体格较强壮的15只雄鼠作为交配鼠。剩余雄鼠均作电击鼠用,剩余雌鼠备用代替不孕鼠。运用旁观电击法建立妊娠期恐伤大鼠动物模型。仔鼠延续母鼠分组,至80日龄时采用随机数字表法选取15只进行实验。采用旷场实验、糖水偏好实验、悬尾实验评价仔鼠情志;通过脑立体定位仪在右侧海马区采集脑透析液,应用高效液相色谱-电子俘获检测(HPLC-ECD)法检测NE和EP水平。结果模型组旷场实验水平得分、垂直得分,糖水偏好实验糖水消耗量、糖水偏好值均低于对照组,悬尾实验静止不动时间长于对照组(P<0.05)。模型组各灌流时间点海马组织NE、EP水平均低于对照组(P<0.05)。仔鼠海马组织NE水平与旷场实验水平得分、垂直得分以及糖水偏好实验糖水偏好值呈正相关,与悬尾实验静止不动时间呈负相关(P<0.05)。仔鼠海马组织EP水平与旷场实验水平得分以及糖水偏好实验糖水偏好值呈正相关,与悬尾实验静止不动时间呈负相关(P<0.05)。结论恐伤孕鼠可改变其80日龄仔鼠的情志及海马区NE和EP的水平,其情志改变与海马区NE和EP的水平密切相关。

关键词：精神障碍妊娠去甲肾上腺素肾上腺素情志

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Estimation and test of restricted linear EV model with nonignorable missing covariates

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Applied Mathematics(A Journal of Chinese Universities) 2018年第3期33卷 344-358页

作者： TANG lin-jun ZHENG Sheng-chao ZHOU zhan-gong Department of Statistics Jiaxing University

This paper deals with estimation and test procedures for restricted linear errors-invariables(EV) models with nonignorable missing covariates. We develop a restricted weighted corrected least squares(WCLS) estimator based on the propensity score, which is fitted by an exponentially tilted likelihood method. The limiting distributions of the proposed estimators are discussed when tilted parameter is known or unknown. To test the validity of the constraints,we construct two test procedures based on corrected residual sum of squares and empirical likelihood method and derive their asymptotic properties. Numerical studies are conducted to examine the finite sample performance of our proposed methods.

关键词： errors-in-variables model nonignorable missing data propensity score smoothed empirical likelihood

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Porosity of crushed rock layer and its impact on thermal regime of Qinghai-Tibet Railway embankment

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Journal of Central South University 2017年第4期24卷 977-987页

作者： LIU Ming-hao LI Guo-yu NIU Fu-jun lin zhan-ju lin zhan-ju State Key Laboratory of Frozen Soil Engineering Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences School of Resources and Environment University of Chinese Academy of Sciences

It has been proven that crushed rock layers used in roadbed construction in permafrost regions have a cooling effect. The main reason is the existence of large porosity of the rock layers. However, due to the strong winds, cold and high radiation conditions on the Qinghai-Tibet Plateau(QTP), both wind-blown sand and/or weathered rock debris blockage might reduce the porosity of the rock layers, resulting in weakening the cooling effect of the crushed rock layer(CRL) in the crushed rock embankment(CRE) of the Qinghai-Tibet Railway(QTR) in the permafrost regions. Such a process might warm the underlying permafrost, and further lead to potential threat to the QTR's integrity and stability. The different porosities corresponding to the different equivalent rock diameters were measured in the laboratory using water saturation method, and an empirical exponential equation between porosity and equivalent rock diameter was proposed based on the measured experimental data and an important finding is observed in our and other experiments that the larger size crushed rock tends to lead to the larger porosity when arbitrarily packing. Numerical tests were carried out to study impacts of porosity on permafrost degradation and differential thaw depths between the sunny and shady shoulders. The results show that the decrease in porosity due to wind-blown sand or weathered rock debris clogging can worsen the permafrost degradation and lead to the asymmetric thermal regime. In the traditional embankment(without the CRL within it), the largest differential thaw depth can reach up to 3.1 m. The optimized porosity appears in a range from 34% to 42% corresponding to equivalent rock diameter from 10 to 20.5 cm. The CRE with the optimized porosities can make underlying permafrost stable and 0 ℃ isotherms symmetric in the coming 50 years, even under the condition that the climate warming can lead to permafrost degradation under the CRE and the traditional embankment. Some practical implica

关键词： Qinghai-Tibet Railway crushed rock embankment porosity wind-blown sand permafrost degradation

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