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An epidermal electrode based triboelectric walking energy harvester for wearable wireless sensing applications

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Science China(Technological Sciences) 2024年第3期67卷 949-957页

作者： CHANG ShiYuan LIU FuHai CHEN JinKai XIA LianBin zhou Hao JIANG JingYang dong Kang ZHANG ChenHao WU yun CHEN Jin XUAN Weipeng sun LingLing JIN Hao dong ShuRong LUO JiKui ministry of Education Key Laboratory of RF Circuits and Systems Hangzhou Dianzi UniversityHangzhou 310018China Special Equipment College Hangzhou Vocational&Technical CollegeHangzhou 310018China College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 330027China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311200China

Harvesting bio-kinetic energy using a triboelectric nanogenerator(TENG) is one of the promising routes to solve the sustainable energy supply problem for wearable electronics. However, additional materials, complex fabricating processes or specific mechanical structures are needed for existing TENGs to harvest bio-kinetic energy. Besides, they need to be tightly attached to the human body, which may result in detachment and malfunction under tense human motion. Herein, an intrinsic epidermal electrode-based TENG(E-TENG) is proposed to harvest human walking energy. The wearing shoes and ground are used as tribo-materials, and the human epidermis is used as the back electrode of the E-TENG. Compared with the traditional TENGs,the E-TENG does not need any additional tribo-materials and complex mechanical structures. Under optimal conditions, the voltage output of E-TENG can reach 914 V. E-TENG has been used as a self-powered warning sensor and pedometer sensor for demonstration. Furthermore, E-TENG based self-powered wireless sensor system has been developed using a newly designed micro energy electronic switch(MEES). Ambient ultraviolet intensity, temperature and humidity information can be monitored and then transmitted to mobile phone every 3.5 min, demonstrating great potential for widespread wearable applications.

关键词： triboelectric nanogenerator wearable wireless sensing self-powered

The In-Flight Realtime Trigger and Localization Software of GECAM

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Research in Astronomy and Astrophysics 2024年第10期24卷 11-24页

作者： xiao-yun Zhao Shao-Lin Xiong Xiang-Yang Wen Xin-Qiao Li Ce Cai Shuo xiao Qi Luo Wen-Xi Peng dong-Ya Guo Zheng-Hua An Ke Gong Jin-Yuan Liao Yan-Qiu Zhang Yue Huang Lu Li Xing Wen Fei Zhang Jing Duan Chen-Wei Wang dong-Li Shi Peng Zhang Qi-Bin Yi Chao-Yang Li Yan-Bing Xu xiao-Hua Liang Ya-Qing Liu Da-Li Zhang Xi-Lei sun Fan Zhang Gang Chen Huan-Yu Wang Sheng Yang xiao-Jing Liu min Gao Mao-Shun Li Jin-zhou Wang Xing zhou Yi Zhao Wang-Chen Xue Chao Zheng Jia-Cong Liu Xing-Bo Han Jin-Ling Qi Jia Huang Ke-Ke Zhang Can Chen Xiong-Tao Yang dong-Jie Hou Yu-Sa Wang Rui Qiao Xiang Ma xiao-Bo Li Ping Wang Xin-Ying Song Li-ming Song Shi-Jie Zheng Bing Li Hong-Mei Zhang Yue Zhu Wei Chen Jian-Jian He Zhen Zhang Jin Hou Hong-Jun Wang Yan-Chao Hao Xiang-Yu Wang Zong-Yuan Yang Zhi-Long Wen Zhi Chang Yuan-Yuan Du Rui Gao xiao-Fei Lan Yan-Guo Li Gang Li Xu-Fang Li Fang-Jun Lu Hong Lu Bin Meng Feng Shi Hui Wang Hui-Zhen Wang Yu-Peng Xu Jia-Wei Yang Xue-Juan Yang Shuang-Nan Zhang Chao-Yue Zhang Cheng-Mo Zhang Zhi-Cheng Tang Cheng Cheng Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China School of Information Science and Technology Southwest Jiaotong UniversityChengdu 611756China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Physics and Space Science College China West Normal UniversityNanchong 637002China Department of Astronomy Beijing Normal UniversityBeijing 100875China Innovation Academy for Microsatellites of CAS Shanghai 201203China Changchun University of Science and Technology Changchun 130022China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China

Realtime trigger and localization of bursts are the key functions of GECAM,an all-sky gamma-ray monitor launched on 2020 December *** developed a multifunctional trigger and localization software operating in the CPU of the GECAM Electronic *** onboard software has the following features:high trigger efficiency for real celestial bursts with a suppression of false triggers caused by charged particle bursts and background fluctuation,dedicated localization algorithm optimized for both short and long bursts,and low time latency of the trigger information which is downlinked through the Global Short Message Communication service of the global BeiDou navigation *** paper provides a detailed description of the design and development of the trigger and localization software system for *** covers the general design,workflow,the main functions,and the algorithms used in the *** paper also includes on-ground trigger tests using simulated gamma-ray bursts generated by a dedicated X-ray tube,as well as an overview of the performance for real celestial bursts during its in-orbit operation.

关键词： telescopes instrumentation:detectors methods:observational

Effect and Safety of Herbal Medicine Foot Baths in Patients with Diabetic Peripheral Neuropathy:A Multicenter Double-Blind Randomized Controlled Trial

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Chinese Journal of Integrative Medicine 2024年第3期30卷 195-202页

作者： HUANG Hao-yue LIN Yu-ping WEI Hua FU Yu zhou Yue-hong FANG Zhao-hui QIU xiao-tang WANG Mei LI Qing-bo LI Shan-shan WANG Shi-dong DAI Fang LIU Zhen-jie ZHAO Ling WEN Jian-xuan WU Li-yan ZENG Hui-yan ZHANG Jin-ming LU Qi-yun HE Liu SONG Wei sun Lu LUO Lu-lu HE Jia-li XIE Wen-wen LIANG Qing-shun HUANG Yuan ZHU Sheng-ling LONG Jie-er GAO Zhi-juan WEN Ze-huai LI Chun-ji OUYANG Wen-wei LI Geng WU ming-hui LI An-xiang HUANG Jin-zhu Sanjoy K Paul TANG Xian-yu FAN Guan-jie Department of Endocrinology Guangdong Provincial Hospital of Chinese MedicineGuangzhou510120China The Second Clinical College of Guangzhou University of Chinese Medicine Guangzhou510120China Department of Endocrinology The Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou510120China Guangdong Provincial Academy of Chinese Medical Sciences Guangzhou510120China Department of Endocrinology The First Affiliated Hospital of Henan University of Chinese MedicineZhengzhou450000China Department of Endocrinology Liuyang Hospital of Chinese MedicineChangsha410000China Department of Endocrinology The First Affiliated Hospital of Anhui University of Chinese MedicineHefei230000China Department of Endocrinology Hainan Provincial Hospital of Traditional Chinese MedicineHaikou570100China Department of Endocrinology The Affiliated Hospital of Liaoning University of Traditional Chinese MedicineShenyang110000China Department of Geriatric Luoyang No.1 Hospital of Traditional Chinese MedicineLuoyangHenan Province471000China Department of Endocrinology The Second Affiliated Hospital of Guizhou University of Traditional Chinese MedicineGuiyang550000China Department of Endocrinology Beijing University of Chinese Medicine Affiliated Dongzhimen HospitalBeijing100000China Department of Endocrinology The First Affiliated Hospital of Guizhou University of Traditional Chinese MedicineGuiyang550000China Melbourne EpiCentre The University of Melbourne and Melbourne HealthMelbourne3013Australia

Objective:To evaluate the effect and safety of foot baths with Tangbi Waixi Decoction(TW)in treating patients with diabetic peripheral neuropathy(DPN).Methods:It is a multicenter double-blinded randomized controlled *** with DPN were recruited between November 18,2016 and May 30,2018 from 8 hospitals in *** patients received basic treatments for glycemic *** received foot baths with TW herbal granules either 66.9 g(intervention group)or 6.69 g(control group)for 30 min once a day for 2 weeks and followed by a 2-week rest,as a therapeutic *** the Toronto Clinical Scoring System total score(TCSS-TS)6 points,the patients received a total of 3 therapeutic courses(for 12 weeks)and were followed up for 12 *** primary outcome was change in TCSS-TS score at 12 and 24 *** outcomes included changes in bilateral motor nerve conduction velocity(MNCV)and sensory nerve conduction velocity(SNCV)of the median and common peroneal *** was also ***:Totally 632 patients were enrolled,and 317 and 315 were randomized to the intervention and control groups,*** the 12-week intervention,patients in both groups showed significant declines in TCSSTS scores,and significant increases in MNCV and SNCV of the median and common peroneal nerves compared with pre-treatment(Pnificantly between groups(P>0.05),and no serious adverse event was related with ***:Treatment of TW foot baths was safe and significantly benefitted patients with DPN.A low dose of TW appeared to be more effective than a high dose.(Registry *** CTR-IOR-16009331)

关键词： diabetic peripheral neuropathy herbal medicine foot baths Chinese medicine randomized controlled trial Tangbi Waixi Decoction

Insights into the dual-roles of alloying elements in the growth of Sn whiskers

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Journal of Materials Science & Technology 2022年第22期117卷 65-71页

作者： Yan Zhang Chengjie Lu yun dong min zhou Jiandang Liu Hongjun Zhang Bangjiao Ye Zhengming sun School of Materials Science and Engineering Southeast UniversityNanjing 211189China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China School of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026China

The growth of Sn whiskers from Ti_(2)SnC/Sn-X(X=Sn,Bi,Pb,Ga)samples was studied in this work to understand the effect of alloying elements on whiskering *** mobility of source Sn atoms relating with the formation and migration of defects was found to be the critical factor dominating the growth rate,with the gathering of which to grow whiskers on the surface acts as an effective means to lower the *** a result,the source Sn atoms would migrate to whisker root spontaneously,making the growth of whiskers the nature of materials,and external factors like compressive stress or oxidation are no more necessary but facilitate the whiskering process by promoting the mobility of source Sn atoms.

关键词： Whisker MAX phase DFT Positron annihilation Defects

不同强度电针对大鼠脊髓背角广动力神经元伤害性放电的抑制作用

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针刺研究 2024年第5期49卷 448-455页

作者：于清泉袁咪孙小月张妮楠王晓宇宿杨帅张知云景向红中国中医科学院针灸研究所北京100700

目的:观察不同强度电针对大鼠脊髓背角广动力(WDR)神经元伤害性电活动的作用,探讨电针在脊髓背角水平调控伤害性信号的效应特征。方法:采用多通道在体电生理技术记录25只正常雄性SD大鼠脊髓背角WDR神经元的电活动,在神经元的足底感受野(... 详细信息

目的:观察不同强度电针对大鼠脊髓背角广动力(WDR)神经元伤害性电活动的作用,探讨电针在脊髓背角水平调控伤害性信号的效应特征。方法:采用多通道在体电生理技术记录25只正常雄性SD大鼠脊髓背角WDR神经元的电活动,在神经元的足底感受野(RF)给予连续高强度电刺激诱发神经元的windup,而后于大鼠同侧“足三里”穴区进行不同强度(1 mA或2 mA)的电针(EA1 mA、EA2 mA)干预10 min,刺激频率为2 Hz/15 Hz,然后再次以相同条件诱发WDR神经元的windup。比较不同强度电针干预前后,WDR神经元伤害性放电成分的总数量及windup现象的变化。结果:EA1 mA和EA2 mA均显著减少了WDR神经元Aδ和C成分及后放电的数量(P<0.01,P<0.001),且EA2 mA对C成分的抑制率显著高于EA1 mA(P<0.05);EA1 mA和EA2 mA干预减弱了WDR神经元的windup现象(P<0.05,P<0.01),且EA2 mA的效应要强于EA1 mA(P<0.05)。EA1 mA和EA2 mA作用于WDR神经元的非感受野(non-RF)和RF均明显减少了其Aδ成分、C成分和后放电的数量(P<0.05,P<0.01);对于WDR神经元windup现象,EA2 mA作用于non-RF和RF均能发挥显著的抑制作用(P<0.01,P<0.05),而EA1 mA只有作用于non-RF时才能显著抑制(P<0.01)。结论:电针可以抑制大鼠脊髓背角WDR神经元的伤害性电活动,抑制效应与EA干预的强度和部位直接相关,2 mA的抑制效应要强于1 mA。

关键词：电针刺激强度镇痛伤害性信号广动力神经元

Zn改性ni/Al_(2)O_(3)催化剂的苯乙炔选择加氢性能

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应用化学 2024年第7期41卷 948-958页

作者：赛徐煦胡晓丽孙利民刘洪基陈洲方维平伊晓东中国石油兰州石化研究中心兰州730000 厦门大学化学化工学院固体表面物理化学国家重点实验室厦门361005 厦门大学材料学院厦门361005

采用浸渍法制备了一系列不同Zn质量分数的Znni/Al_(2)O_(3)催化剂,并通过X射线粉末衍射(XRD)、氢气程序升温吸附(H_(2)-TPR)、X射线光电子能谱(XPS)等表征手段和密度泛函理论(DFT)计算模拟等考察了Zn的引入对催化剂的结构、性质以及苯... 详细信息

采用浸渍法制备了一系列不同Zn质量分数的Znni/Al_(2)O_(3)催化剂,并通过X射线粉末衍射(XRD)、氢气程序升温吸附(H_(2)-TPR)、X射线光电子能谱(XPS)等表征手段和密度泛函理论(DFT)计算模拟等考察了Zn的引入对催化剂的结构、性质以及苯乙炔选择加氢制苯乙烯反应性能的影响。结果表明,适量Zn的添加显著提升了ni/Al_(2)O_(3)催化剂的苯乙炔选择加氢性能,与ni/Al_(2)O_(3)催化剂相比,3%Zn-ni/Al_(2)O_(3)催化剂上苯乙炔转化率由92.2%提高至96.8%,而苯乙烯的损失率则由4.3%下降至1.8%。催化剂的XRD和H_(2)-TPR表征结果显示,Zn掺杂到niO晶格中增强了活性金属ni与载体间的相互作用,有利于提高ni的分散度;XPS表征结果表明,Zn表面的电子会向ni转移,使ni表面更加富电子。理论计算结果证实引入Zn后的催化剂表面容易形成稳定的Zn7ni结构,Zn的表面电子向ni迁移形成了富电子的ni活性中心,对苯乙烯过渡加氢能垒为1.42 eV,高于选择加氢制苯乙烯的脱附能垒(0.55 eV),提高了Zn改性ni/Al_(2)O_(3)催化剂的苯乙炔选择性加氢性能。

关键词：苯乙炔选择加氢锌改性镍基催化剂理论模拟

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大语言模型及其在政务领域的应用

清华大学学报（自然科学版） 2024年第4期64卷 649-658页

作者：王昀胡珉塔娜孙海涛郭毅峰周武爱郭昱张皖哲冯建华清华大学计算机科学与技术系北京100084 中移信息系统集成有限公司北京100032 中国人民大学新闻学院北京100872

大语言模型是自然语言处理的核心研究内容之一,已广泛应用于包括政务在内的诸多领域。首先,介绍了统计语言模型、神经网络语言模型等早期语言模型的研究进展;其次,重点综述了大语言模型研究进展;最后,介绍了大语言模型在政务领域的应用... 详细信息

大语言模型是自然语言处理的核心研究内容之一,已广泛应用于包括政务在内的诸多领域。首先,介绍了统计语言模型、神经网络语言模型等早期语言模型的研究进展;其次,重点综述了大语言模型研究进展;最后,介绍了大语言模型在政务领域的应用情况,包括政务文本分类、政务问答、政务命名实体识别、舆情风险识别和政务关系抽取,并提出政务大语言模型研究需要解决的问题,即数据多模态化、正确面对“模型即服务”趋势、注重数据高安全性、明确责任边界。此外,还提出了政务大语言模型研究的技术路径。大语言模型正处于蓬勃发展的阶段,随着中国推动人工智能技术研究及其在政务领域的应用,大语言模型将在政务领域发挥更大作用。

关键词：语言模型自然语言处理人工智能迁移学习数字政府

Analytical Bond-order Potential for hcp-Y

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Chinese Journal of Chemical Physics 2013年第5期26卷 526-532,I0003页

作者： Kai-min Fan Li Yang Jing Tang Qing-qiang sun yun-ya Dai Shu-ming Peng xiao-song zhou xiao--tao ZU School of Physical Electronics University of Electronic Science and Technology of China ChenEdu610054 China Department of Physics and Engineering Technology Sichuan University of Arts and Science Dazhou635000 China Department of Chemistry and Chemical Engineering Sichuan University of Arts and Science Dazhou635000 China School of Science Huaihai Institute of Technology LianyunEanE 222005 China Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics Mianyang 621900China

The lattice parameters, elastic constants, cohesive energy, structural energy differences, as well as the properties of point defects and planar defects of hexagonal closepacked yttrium （hcpY） have been studied with ab initio density functional theory for constructing an ex tensive database. Based on an analytical bondorder poial scheme, empirical manybody interatomic potential for hcpY has been developed. The model is fitted to some properties of Y, e.g., the lattice parameters, elastic constants, bulk modulus, cohesive energy, vacancy formation energy, and the structural energy differences. The present potential has ability to reproduce defect properties including the selfinterstitial atoms formation energies, vacancy formation energy, divacancy binding energy, as well as the bulk properties and the thermal dynamic properties.

关键词： Hexagonal close-packed yttrium Bond-order potential Density functionaltheory Molecular dynamics

Optical design of a novel near-infrared phase contrast imaging(ni-PCI)diagnostic on the HL-2A tokamak

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Plasma Science and Technology 2024年第3期26卷 31-37页

作者：徐皓龚少博余羿许敏兰涛王志斌石中兵聂林赵光义刘灏周艺轩袁子豪肖晨雨陈坚 Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082People's Republic of China Southwestern Institute of Physics Chengdu 610041People's Republic of China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026People's Republic of China

The optical design of near-infrared phase contrast imaging(ni-PCI)diagnosis on HL-2A is introduced in this *** scheme benefits from the great progress of near-infrared laser technology and is a broadening of traditional phase contrast *** diagnostic can work as a keen tool to measure plasma wavenumber spectra by inferring string-integrated plasma density *** of both the front optical path which is the path before the laser transmitting into the tokamak plasma and the rear optics which is the path after the laser passing through the plasma is *** 1550 nm laser is chosen as the probe beam and highprecision optical components are designed to fit the laser beam,in which a phase plate with a 194-nm-deep silver groove is the *** with the conventional 10.6μm laser-based PCI system on HL-2A,ni-PCI significantly overcomes the unwanted phase scintillation effect and promotes the measurement capability of high-wavenumber turbulence with an increased maximal measurable wavenumber from 15 cm^(-1)to 32.6 cm^(-1).

关键词： phase contrast imaging near infrared laser plasma laser diagnostic