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Chinese Physics B 2021年第1期30卷 256-261页

作者： xin-tong zhang Department of Optics and Optical Engineering University of Science and Technology of ChinaHefei 230026China

Broadband nonlinear frequency conversions of optical waves are widely employed in multiple areas of optics and photonics. However, the broadening of conversion bandwidth is often at a cost of reduction in efficiency, which may induce a limitation on practical applications. Here we theoretically propose a novel design of LiNbO_(3) ridge waveguides on LiTaO_(3) substrates which can be used for efficient and broadband second harmonic generation. Through group velocity engineering of the ridge waveguides, acceptance bandwidth over 20 nm with a high conversion efficiency of > 25%W^(-1)·cm^(-2) is achieved at telecom-band.

关键词： second harmonic generation lithium niobate ridge waveguide dispersion manipulation

Metal-free reduction of tertiary phosphine oxides with Hantzsch ester

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Chinese Chemical Letters 2014年第1期25卷 176-178页

作者： tong-xin zhang Wei-Xi zhang Mei-Ming Luo Key Laboratory of Green Chemistry & Technology of Ministry of Education College of ChemistrySichuan University

The （COCl）2/Hantzsch ester is found to be an effective system for the metal-free reduction of tertiary phosphine oxides. The reaction proceeds under mild conditions, and is applicable to triarylphosphine oxides and alkyldiarylphosphine oxides to produce the corresponding tertiary phosphines in good to excellent yields. This new finding provides a practical, convenient and metal-free method for the reduction of tertiary phosphine oxides to tertiary phosphines, and shows potential application in organic synthesis.

关键词： Metal-free reduction Tertiary phosphine oxides Tertiary phosphines Hantzsch ester

Emerging of Ag particles on ZnO nanowire arrays for blue-ray hologram storage

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Chinese Physics B 2022年第3期31卷 418-423页

作者： Ning Li xin Li Ming-Yue zhang Jing-Ying Miao Shen-Cheng Fu xin-tong zhang Center for Advanced Optoelectronic Functional Material Research Northeast Normal UniversityChangchun 130024China Key Laboratory of UV-Emitting Materials and Technology (Northeast Normal University) Ministry of EducationChangchun 130024China

Noble-metal/metal-oxide-semiconductor nanostructures as an important material platform have been applied in massive data storage. ZnO exhibits excellent optical modulation ability. However, plasmon induced charge separation effect in Ag/ZnO systems is very weak due to the low chemical activity on surface of the oxide. Herein, we prepare ZnO nanowire arrays via the hydrothermal method, and measure their absorption spectra, photoluminescence spectra and electron paramagnetic resonance, proving the existence of oxygen defects in ZnO. Accordingly, an idea of “electron reverse transfer” is proposed such that blue-ray(403.4 nm) induces reduction of Ag^(+) ions through the excitation of ZnO. Rod-like and spherical silver nanoparticles emerge on the surface and in the gap of ZnO nanowire arrays, respectively, after the visible light stimulus. It is found that nanowire density, oxygen defects and surface roughness are dependent on hydrothermal time. The optimized diffraction efficiency of 0.08% is obtained for reconstructing hologram in the nanocomposite film. This work provides a bright way for construction of ZnO-based optoelectronic integrated devices.

关键词： holographic ZnO nanowires Ag nanoparticles

Isolation of microsatellite loci in the pollinating fig wasp of Ficus hispida, Ceratosolen solmsi

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Insect Science 2008年第4期15卷 303-306页

作者： Hao Yu tong-xin zhang Hao-Yuan Hu Li-Ming Niu Hui Xiao Yan-Zhou zhang Da-Wei Huang Institute of Zoology Chinese Academy of Sciences Beijing Graduate School of the Chinese Academy of Sciences Beijing Plant Protection College Shandong Agricultural University Tai' an Shandong China

Microsatellite loci were isolated for Ceratosolen solmsi, pollinator of the dioecious Ficus hispida. We developed nine polymorphic microsatellite loci based on the method of polymerase chain reaction isolation of microsatellite arrays （PIMA）. Enrichment of genomic libraries was performed by random amplified polymorphic DNA （RAPD）. A subset of 38 positive clones was sequenced; 15 clones showed microsatellite loci. We tested 15 designed primer pairs and nine of them produced polymorphic amplification in 48 individual wasps collected from different fruits of the dioecious host fig Ficus hispida in China. Among the 48 individuals, 49 alleles were obtained at the nine loci. The observed heterozygosity ranged between 0.357 and 0.634.

关键词： Ficus fig wasp markers microsatellite loci polymorphism primers

Study on the Characteristics of the Gas Switch Electrode Erosion

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高压电器 2011年第9期47卷 6-11页

作者： WANG Hu CHANG Jia-sen tong xin zhang Qiao-gen QIU Ai-ci School of Electrical Engineering Xi'an Jiaotong University Xi'an 710049 China

Gas spark switch is one of the key parts in pulsed power *** erosion has great influence on the switch performance and *** this paper,a field distortion gas switch is selected for the experiment and a great deal of discharging experiments have been conducted in different test *** forming process of etch pit as well as its influencing factors is discussed briefly and surface roughness coefficient(SRC) of the electrode is put forward to evaluate the state of electrode *** results show that current peak plays an important role in electrode erosion when waveforms of discharge current are the same,and electric charge and oscillation frequency of discharge current also have great effect on the electrode erosion when waveforms of discharge current are *** the increase of discharge times,SRC decreases slowly at first and then decreases quickly after three thousand of discharge times.

关键词： erosion etch pit surface roughness coefficient gas switch

A single Eu^(2+)-activated high-color-rendering oxychloride white-light phosphor for white-light-emitting diodes

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Light(Science & Applications) 2016年第1期5卷 677-685页

作者： Peng-Peng Dai Cong Li xin-tong zhang Jun Xu Xi Chen Xiu-Li Wang Yan Jia Xiaojun Wang Yi-Chun Liu Center for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV-Emitting Materials and Technology of Ministry of EducationNortheast Normal University5268 Renmin StreetChangchun 130024China Department of Chemistry University of ZurichThe X-ray Crystallography Facility and The Linden Research GroupWinterthurerstrasse190 CH-8057 ZurichSwitzerland School of Life Sciences Northeast Normal University5268 Renmin StreetChangchun 130024China Department of Physics Georgia Southern UniversityStatesboroGA 30460USA

Single-phased,high-color-rendering index(CRI)white-light phosphors are emerging as potential phosphor-converted white-light-emitting diodes(WLEDs)and as an alternative to blends of tricolor ***,it is a challenge to create a high CRI white light from a single-doped ***,we present a high CRI(Ra 591)white-light phosphor,Sr_(5)(PO_(4))_(3-x)(BO_(3))_(x)Cl:Eu^(2+),composed of Sr5(PO4)3Cl as the beginning member and Sr_(5)(BO_(3))_(3)Cl as the end *** work utilized the solid-solution method,and tunable Eu^(2+) emission was ***-tunable Eu^(2+) emissions in response to structural variation were observed in Sr_(5)(PO_(4))_(3-x)(BO_(3))_(x)Cl solid *** was further confirmed using X-ray Rietveld refinement,electron paramagnetic resonance spectroscopy,and in the photoluminescence *** color-tunable emissions included the white light that originated from the combination of the blue emission of Sr_(5)(PO_(4))_(3)Cl:Eu^(2+) and an induced Eu^(2+) yellow emission at approximately 550 nm in the solid ***,the white-light phosphors showed a greater R9590.2 under excitation at 365 *** result has rarely been reported in the literature and is greater than that of(R9514.3)commercial Y_(3)A_(l5)O_(12):Ce^(3+)-based *** findings demonstrate the great potential of Sr_(5)(PO_(4))_(3-x)(BO_(3))_(x)Cl:0.04Eu^(2+) as a white-light phosphor for near-UV phosphor-converted *** results also provide a shortcut for developing a high CRI white-light phosphor from a single Eu^(2+)-doped compound.

关键词： high-color-rendering single Eu^(2+)-activated solid solution white-emitting phosphor

Molecular mechanism and therapeutic targeting of necrosis,apoptosis,pyroptosis,and autophagy in cardiovascular disease

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Chinese Medical Journal 2021年第22期134卷 2647-2655页

作者： Pan Li Xiao-Rong Dong Bei zhang xin-tong zhang Jing-Zhuo Liu De-Sheng Ma Li Ma Department of Emergency Hong Hui HospitalXi’an Jiaotong UniversityXi’anShaanxi 710054China Department of Emergency Intensive Care Unit Lanzhou University of Second HospitalLanzhouGansu 730030China

Cell death occurs in various tissues and organs in the *** is a physiological or pathological process that has different *** is of great significance in maintaining the morphological function of cells and clearing abnormal ***,apoptosis,and necrosis are all modes of cell death that have been studied extensively by many experts and scholars,including studies on their effects on the liver,kidney,the heart,other organs,and even the whole *** heart,as the most important organ of the body,should be a particular *** review summarizes the mechanisms underlying the various cell death modes and the relationship between the various mechanisms and heart *** current research status for heart therapy is discussed from the perspective of pathogenesis.

关键词： Cell death Apoptosis Necrosis Pyroptosis Autophagy Pathogenesis Treatment

Targeting Epac2 and GluA3-containing AMPARs:a novel therapeutic strategy for Alzheimer's disease

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Neural Regeneration Research 2025年第11期20卷 3223-3224页

作者： tong zhang Martina Schmidt Department of Molecular Pharmacology Groningen Research Institute of PharmacyUniversity of GroningenGroningenThe Netherlands School of Pharmacy Tianjin Medical UniversityTianjinChina

Alzheimer's disease(AD)is a neurodegenerative disease that manifests progressive decline in memory and *** the early stage of AD,memory retrieval is impaired preceding memory acquisition and consolidation(Roy et al.,2016).Prior to the onset of symptoms,pathological amyloid-β(Aβ)plagues and tau protein tangles accumulate in extracellular and intracellular spaces,respectively,leading to *** these hallmark pathologies,Aβ is proposed to be the primary etiology by triggering a cascade of pathogenic events,including neuroinflammation,oxidative stress,tau hyperphosphorylation,synaptic/neuronal dysfunction,and neuronal death(zhang et al.,2023b).

关键词： Alzheimer impaired Aβ

Recent progress in constructing fluorinated solid-electrolyte interphases for stable lithium metal anodes

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 270-291页

作者： Di zhang Pengfei Lv Wei Qin xin He Yuanhua He Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province College of Civil Aviation Safety EngineeringCivil Aviation Flight University of ChinaGuanghan 618307China School of Chemical Engineering Sichuan UniversityChengdu 610065China

Lithium metal batteries(LMBs)are emerging as a promising energy storage solution owing to their high energy density and specific ***,the non-uniform plating of lithium and the potential rupture of the solid-electrolyte interphase(SEI)during extended cycling use may result in dendrite growth,which can penetrate the separator and pose significant short-circuit *** a stable SEI is essential for the long-term operation of the ***-rich SEI has garnered significant attention for its ability to effectively passivate electrodes,regulate lithium deposition,and inhibit electrolyte *** the structural components and preparation methods of existing fluorinated SEI is crucial for optimizing lithium metal anode *** paper reviews the research on optimizing LiF passivation interfaces to protect lithium metal *** focuses on four types of compositions in fluorinated SEI that work synergistically to enhance SEI *** instance,combining compounds with LiF can further enhance the mechanical strength and ionic conductivity of the *** metals with LiF significantly improves electrochemical performance at the SEI/anode interface,with a necessary focus on reducing electron tunneling ***,incorporating polymers with LiF offers balanced improvements in interfacial toughness and ionic conductivity,though maintaining structural stability over long cycles remains a critical area for future *** alloys combined with LiF increase surface energy and lithium affinity,challenges such as dendrite growth and volume expansion *** summary,this paper emphasizes the crucial role of interfacial structures in LMBs and offers comprehensive guidance for future design and development efforts in battery technology.

关键词： LiF lithium metal anodes solid-electrolyte interphase interface cycling stability

高光谱成像技术的库尔勒梨早期损伤可视化检测研究

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光谱学与光谱分析 2017年第1期37卷 150-155页

作者：陈欣欣郭辰彤张初刘子毅蒋浩楼兵干何勇浙江大学生物系统工程与食品科学学院浙江杭州310058 浙江大学农业与生物技术学院浙江杭州310058

利用高光谱成像技术对库尔勒梨早期损伤进行快速识别检测。以60个库尔勒梨为研究对象,采集380~1 030nm波段范围内完好样本和损伤后1~7天样本的480幅高光谱图像。提取图像中感兴趣区域(ROI)的平均光谱信息,利用小波变换(WT)对光谱数据进... 详细信息

利用高光谱成像技术对库尔勒梨早期损伤进行快速识别检测。以60个库尔勒梨为研究对象,采集380~1 030nm波段范围内完好样本和损伤后1~7天样本的480幅高光谱图像。提取图像中感兴趣区域(ROI)的平均光谱信息,利用小波变换(WT)对光谱数据进行去噪平滑,将去噪后的全部样本按2∶1的比例分成建模集(320个)和预测集(160个)。利用二阶导数从全谱信息中提取出19个特征波长,分别基于全谱和提取出的特征波长对建模集和预测集进行支持向量机(SVM)建模分析。结果表明,基于全谱和特征波长的判别分析模型中,两者预测集的识别率都达到93.75%,表明提取的特征波长包含了光谱数据中的关键信息。然后,基于特征波长运用波段比运算挑选最佳波段比,根据波段比F值的分布确定光谱图像分割的最佳波长684和798nm。对最佳波段比(684/798nm)下的图像,利用选择性搜索(SS)对高光谱图像中样本的完好和损伤区域进行分割,从分割结果来看,1~7天损伤样本的受损区域能够被准确检测出来。研究结果表明:基于高光谱成像技术对库尔勒梨进行损伤鉴别是可行的,该研究所获得的特征波长和波段比为研发在线实时的库尔勒梨损伤检测系统提供支撑。

关键词：高光谱成像损伤检测支持向量机波段比运算库尔勒梨