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Diagnosis of Dental Caries Using Terahertz Technology

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Journal of Electronic Science and Technology 2021年第3期19卷 255-262页

作者： Nagendra Parasad Yadav Guo-Zhen Hu zheng-peng yao Ashish Kumar School of Electrical and Electronics Information Engineering Hube Polytechnic UniversityHuangshi 435003 School of Electronics and Optical Engineering Nanjing University of Science and TechnologyNanjing 210094

Recently,the diagnoses of dental caries and other dental issues are in a queue as only X-ray-based techniques are available in most hospitals around the ***(THz)parametric imaging(TPI)is the latest technology that can be applied for medical applications,especially dental *** technology is harmless and thus suitable for biological samples owing to the low energy of THz *** this paper,a developed TPI system is used to investigate the two-dimensional(2 D)and three-dimensional(3D)images of different samples from human *** analyzing the measured images of human teeth,the results suggest that the THz parametric technology is capable of investigating the inner side structure of the *** technique can be useful in detecting the defects in all types of human and animal *** measurement and analytical calculations have been performed by using the TPI system and MATLAB,respectively,and both are in good *** characteristics of THz waves and their interactions with the tooth samples are *** the available THz-based technologies,such as TPI,and their potential applications of diagnoses are also presented.

关键词： Dental caries early diagnosis medical application terahertz(THz)parametric imaging(TPI) three-dimensional(3D)imaging

特征差异强化算法在非侵入式负荷监测中的应用研究

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机械设计 2020年第S1期37卷 39-43页

作者：郑耀鹏天津工业大学电气工程与自动化学院天津300378

非侵入式负荷监测技术是实现智能电网建设的关键技术。非侵入式负荷监测中特征相近电器及低功率小电流电器的识别与分类一直是研究的重点也是突破的难点,文中采用电流谐波幅值数据作为特征数据,并依据谐波幅值数据的组成特点及特征相近... 详细信息

非侵入式负荷监测技术是实现智能电网建设的关键技术。非侵入式负荷监测中特征相近电器及低功率小电流电器的识别与分类一直是研究的重点也是突破的难点,文中采用电流谐波幅值数据作为特征数据,并依据谐波幅值数据的组成特点及特征相近电器分类模糊的现状,提出了一种针对谐波幅值数据的特征差异强化的方法,该方法能改善小功率用电负荷与大功率用电负荷共同工作时小功率用电负荷难以辨识的现状,对小功率与特征相近用电负荷的分类有较好的效果。试验结果表明,特征差异强化算法能提高特征值相近电器的分类识别准确性。

关键词：非侵入式负荷监测谐波幅值特征差异强化

Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： peng zheng Wang Zhou Ying Mo Biao zheng Miaomiao Han Qin Zhong Wenwen Yang peng Gao Lezhi Yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

Synergistic effect of bonding heterogeneity and phonon localization in introducing excellent thermoelectric properties in layered heteroanionic NdZnSbO material

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Journal of Energy Chemistry 2025年第1期100卷 259-272页

作者： Da Wan Shuwei Tang Shulin Bai Xiaodong Li peng Ai Wanrong Guo Tuo zheng College of Materials Science and Engineering Liaoning Technical University Faculty of Chemistry Northeast Normal University

Layered rare-earth metal oxides, harnessing the dual properties of oxides and two-dimensional layered materials, exhibit remarkable thermal stability and quantum confinement effects. Therefore, this work adopts the first-principles calculation combined with the Boltzmann transport theory to predict the thermoelectric properties of NdZnSbO compound. The coexistence of weak interlayer van der Waals interactions, robust intralayer ionic bonding, and partial covalent bonding leads to remarkable bonding heterogeneity, which engenders pronounced phonon scattering and imposes constraints on thermal transport along the out-of-plane direction. The weakened chemical bonds induced by the antibonding states, together with the rattling-like behavior of the Zn atom, culminate in the profound anharmonicity in the layered NdZnSbO compound. The weakening bond and heavy element contribute to the softness of phonon modes, which significantly diminishes the phonon group velocity. The redistribution-dominated four-phonon scattering process spans a large optical gap, which effectively reduces the lattice thermal conductivity. The NdZnSbO compound exhibits direct semiconductor characteristic with a bandgap of 0.73 e V by adopting the Heyd-Scuseria-Ernzerhof(HSE06) functional in combination with spin–orbit coupling(SOC) effect. The multi-valley feature of NdZnSbO compound augur favorably for band degeneracy, thus amplifying the power factor. Consequently, an optimal figure-of-merit(ZT) of 3.40 at 900 K is achieved for the n-type NdZnSbO compound. The present study delves deeply insights into the origins for the low thermal conductivity of NdZnSbO compound and proposes an optimization scheme to enhance overall thermoelectric performance.

关键词： Bond strength (chemical)

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DDE模块与VB在瓦斯测控平台的应用

凿岩机械气动工具 2022年第3期48卷 43-47页

作者：郑跃鹏中国煤炭科工集团太原研究院山西太原030006 山西天地煤机装备有限公司山西太原030006

在数字化信息时代,针对协议保护的前提下,提出了一种基于Windows操作环境下开发VB简易程序与DDE模块之间实现数据交换的解决方案。同时利用组态王与PLC之间远程信息交换,实现数据的汇总、采集、传输和上传。

关键词：组态王 DDE模块 VB 数据交换

The compound(E)-2-(3,4-dihydroxystyryl)-3-hydroxy-4H-pyran-4-one alleviates neuroinflammation and cognitive impairment in a mouse model of Alzheimer's disease

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Neural Regeneration Research 2025年第11期20卷 3330-3344页

作者： Xueyan Liu Wei Wu Xuejuan Li Chengyan Wang Ke Chai Fanru Yuan Huijuan zheng Yuxing yao Chenlu Li Zu-Cheng Ye Daijun Zha Department of Medicinal Chemistry School of PharmacyFujian Medical UniversityFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases School of Basic Medical SciencesFujian Medical UniversityFuzhouFujian ProvinceChina Institute of Laboratory Animal Center Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Neurosurgery Neurosurgery Research InstituteThe First Affiliated HospitalFujian Medical UniversityFuzhouFujian ProvinceChina Department of Hyperbaric Oxygen National Regional Medical CenterBinhai Campus of the First Affiliated HospitalFujian Medical UniversityFuzhouFujian ProvinceChina

Previous studies have shown that the compound(E)-2-(3,4-dihydroxystyryl)-3-hydroxy-4H-pyran-4-one(D30),a pyromeconic acid derivative,possesses antioxidant and anti-inflammatory properties,inhibits amyloid-β aggregation,and alleviates scopolamine-induced cognitive impairment,similar to the phase Ⅲ clinical drug *** this study,we established a mouse model of Alzheimer's disease via intracerebroventricular injection of fibrillar amyloid-β to investigate the effect of D30 on fibrillar amyloid-β-induced *** results showed that D30 alleviated fibrillar amyloid-β-induced cognitive impairment,promoted fibrillar amyloid-β clearance from the hippocampus and cortex,suppressed oxidative stress,and inhibited activation of microglia and astrocytes.D30 also reversed the fibrillar amyloid-β-induced loss of dendritic spines and synaptic protein ***,we demonstrated that exogenous fibrillar amyloid-βintroduced by intracerebroventricular injection greatly increased galectin-3 expression levels in the brain,and this increase was blocked by *** the role of D30 in clearing amyloid-β,inhibiting neuroinflammation,protecting synapses,and improving cognition,this study highlights the potential of galectin-3 as a promising treatment target for patients with Alzheimer's disease.

关键词： Alzheimer's disease amyloid-β astrocyte cognitive impairment D30 dendritic spines galectin-3 microglia neuroinflammation neuron

Gut-brain axis as a bridge in obesity and depression:Mechanistic exploration and therapeutic prospects

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World Journal of Psychiatry 2025年第1期15卷 12-20页

作者： Rui-Ying Fang Xiao-Rui Pan Xin-Xing Zeng zheng-zheng Li Bo-Fan Chen Hai-Min Zeng Jie peng The Second Clinical Medical College The Second Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina

A recent study by Wang et al,published in the World Journal of Psychiatry,provided preventative and therapeutic strategies for the comorbidity of obesity and *** gut-brain axis,which acts as a two-way communication system between the gastrointestinal tract and the central nervous system,plays a pivotal role in the pathogenesis of these *** suggests that metabolic byproducts,such as short-chain fatty acids,lipopolysaccharide and bile acids,which are generated by the gut microbiota,along with neurotransmitters and inflammatory mediators within the gut-brain axis,modulate the host's metabolic processes,neuronal regulation,and immune responses through diverse *** interaction between obesity and depression via the gut-brain axis involves disruptions in the gut microbiota balance,inflammatory immune responses,and alterations in the neuroendocrine *** the gut-brain axis,for example,through a ketogenic diet,the use of probiotics,and the supplementation of antioxidants,offers new remedial approaches for obesity and *** research that explores the mechanisms of the gut-brain axis is needed to provide more evidence for clinical treatment.

关键词： Gut-brain axis Obesity Depression Gut microbiota Mechanism

Porous Organic Cage‑Based Quasi‑Solid‑State Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min Qin Zhongliang Li Wen‑Xia Su Jia‑Min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑peng Cai Kang Li Qifeng zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

2008-2017年北京市海淀区学龄前儿童患龋情况分析

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中国妇幼卫生杂志 2020年第2期11卷 51-55页

作者：沈芳袁全莲赵温彭振耀北京市海淀区妇幼保健院北京100080

目的分析北京市海淀区2008-2017年学龄前儿童口腔健康状况及变化趋势,为制定、调整政策和干预措施提供依据。方法收集北京市妇幼保健网络信息系统2008-2017年海淀区学龄前儿童体检统计年报表,采用SPSS20.0软件进行统计分析,采用趋势卡... 详细信息

目的分析北京市海淀区2008-2017年学龄前儿童口腔健康状况及变化趋势,为制定、调整政策和干预措施提供依据。方法收集北京市妇幼保健网络信息系统2008-2017年海淀区学龄前儿童体检统计年报表,采用SPSS20.0软件进行统计分析,采用趋势卡方检验评价患龋率的年度变化趋势。结果海淀区2017年学龄前儿童患龋率和龋均分别为55.92%和2.9,较2008年分别上升了10.68%和0.8。2017年学龄前儿童龋齿矫治率(人)和龋齿充填率(牙)分别为56.45%和44.89%,较2008年分别下降了10.94%和12.69%。结论2008-2017年北京市海淀区学龄前儿童患龋率和龋均均呈现上升趋势,龋齿矫治率(人)和龋齿充填率(牙)呈下降趋势。必须加大口腔保健知识的宣传教育,加大技术和资金的投入,在托幼机构推行有效、经济、适宜的防龋技术,降低乳牙龋齿的发病率,保障儿童的身心健康。

关键词：学龄前儿童乳牙龋病