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Reversibly Tuning Electrochemiluminescence with Stimulated Emission Route for Single-Cell Imaging

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Research 2024年第3期2023卷 205-215页

作者： Cheng Ma xiaodan Gou Zejing Xing min-Xuan Wang Wenlei Zhu Qin Xu Dechen Jiang Jun-Jie Zhu School of Chemistry and Chemical Engineering Yangzhou University.Yangzhou 225002P.R.China State Key Laboratory of Analytical Chemistry for Life Science State Key Laboratory of Pollution Control and Resource ReuseSchool of Chemistry and Chemical EngineeringSchool of the EnvironmentNanjing UniversityNanjing 210023P.R.China.

Electrochemiluminescence (ECL) has established itself as an excellent transduction technique in biosensing and light-emitting device, while conventional ECL mechanism depending on spontaneous emission of luminophores lacks reversibility and tunable emission characters, limiting the universality of ECL technique in the fields of fundamental research and clinical applications. Here, we report the first observation of stimulated emission route in ECL and thus establish a reversible tuning ECL microscopy for single-cell imaging. This microscopy uses a focused red-shifted beam to transfer spontaneous ECL into stimulated ECL, which enables selective and reversible tuning of ECL emission from homogeneous solution, single particles, and single cells. After excluding other possible competitive routes, the stimulated ECL emission route is confirmed by a dual-objective system in which the suppressed spontaneous ECL is accompanied by the enhanced stimulated ECL. By incorporating a commercial donut-shaped beam, the sharpness of single-cell matrix adhesion is improved 2 to 3 times compared with the counterpart in confocal ECL mode. The successful establishment of this stimulated emission ECL will greatly advance the development of light-emitting device and super-resolution ECL microscopy.

关键词： tuning beam limiting

In situ Preparation and Visible-light-driven Photocatalytic Degradation Performance of Nano 3C-SiC@Multilayer Graphene Oxide Heterostructure

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Chemical Research in Chinese Universities 2024年第3期40卷 536-547页

作者： YANG xiaodan GUO Ziqi XU Yichen LI Ziliang ZHOU Yangtao YANG Zhenming ZHOU Zishuai GAO Yong zhang Jinsong Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016P.R.China Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215123P.R.China Shenyang SCIENCREAT Chemicals Co. Ltd.Shenyang 110144P.R.China School of Materials Science and Engineering Northeastern UniversityShenyang 110819P.R.China

Nano 3C-SiC@multilayer graphene oxide(NS@MGO)heterostructure was in situ prepared by carbothermal reduction of pyrolyzed precursor composed of highly dispersed cured phenolic resin and silicon dioxide derived from tetraethyl *** heterojunction interface,number of layers of MGO,and defect content in graphene are the three most important factors for promoting photocatalytic *** contact between 3C-SiC nanograins and MGO layers facilitates the photogenerated electrons to migrate across the heterojunction interface and avoid the formation of SiO_(2) nanolayers on the surface of SiC *** number of MGO layers is supposed to be less than ten instead of over-thick *** concentrations of oxygenated components,considered the defect contents,decrease with the increase of sintering temperature for NS@MGO 0.175-T-150,and relative carbon content in the multilayer graphene *** to the heterostructures,properties,and photocatalytic reaction performance of the NS@MGO materials,the highest photocatalytic kinetic rate constant of 0.00891/min for NS@MGO 0.175-1500-150 shows that the significant enhancement in photocatalytic degradation activity under visible light(>420 nm)irradiation is ascribed to the advantageous synergistic effects between the nano 3C-SiC particles and the direct contact multilayer graphene oxide with appropriate layers and sufficient oxygen content of 3.51%(atomic fraction)in MGO.

关键词： Photocatalysis Multilayer graphene oxide Nano 3C-SiC Visiblelight degradation

Research on the Intervention Effect of Vibroacoustic Therapy in the Treatment of Patients with Depression

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International Journal of Mental Health Promotion 2024年第2期26卷 149-160页

作者： xiaodan Wang Zheng Xie Guiping Du School of Education Xuchang UniversityXuchang461000China Department of Psychological Medicine Henan Provincial People’s HospitalZhengzhou463599China Department of Clinical Psychology Xuchang Jian’an HospitalXuchang461000China

Research purpose:This study implemented somatosensory music therapy on patients with depressive disorders,and explored the effects of somatosensory music therapy on the degree of depression,positive and negative emotions,intuitive stress and autonomic nervous function of *** method:We collected 66 patients diagnosed with depression from the Department of Psychological Medicine of Henan Provincial People’s Hospital,and divided them into a control group and an intervention group according to the random number table,with 33 people in each *** control group received routine psychiatric treatment and *** the basis of the control group,the intervention group received somatosensory music therapy 3 times a week,30 min each time,for 4 consecutive *** Hamilton Depression Scale,Positive and Negative Emotion Scale,Perceived Stress Scale,and Heart Rate Variability Index were collected and analyzed at baseline(T0),2 weeks after treatment(T1)and 4 weeks after treatment(T2).Research results:After 4 weeks of treatment,the HAMD scores of the two groups decreased to varying degrees,and the difference between the groups was statistically significant(p<0.05).After 4 weeks of treatment,the scores of positive emotions in both groups increased to varying degrees,and the scores of negative emotions increased to varying *** scores decreased to varying degrees,and there were statistically significant differences between the positive and negative emotion groups(p<0.05).After 4 weeks of treatment,the CPSS scores of the two groups decreased to varying degrees,and the difference between the two groups was statistically significant(p<0.05).Analyzing the main effect of intervention factors alone,after 4 weeks of treatment,SDNN and RMSSD indexes all increased to varying degrees,and the degree of increase in the intervention group was greater than that in the control group,and the difference between the groups was statistically significant(p<0.05).Research con

关键词： Somatosensory music depressive disorder intervention effect perceived stress heart rate variability

Algorithm for Computation of Unstructured Real Stability Radius and Its Applications

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International Journal of minerals,Metallurgy and Materials 1998年第4期12卷 245-250页

作者： xiaodan zhang lequan min(Applied Science School, University of Science and Technology Beijing, Beijing 100083, China) Applied Science School University of Science and Technology Beijing Beijing 100083 China

An algorithm for the computation of the unstructured real stability radius of high dimensional linearsystem is presented. Using the accurate formula of the real stability radius of 2-dimensional system linear systemchecks the algorithm. The result shows that the algorithm is reliable and efficient. As applications, the unstructuredreal stability radii of 2-dimensional Chua's circuit and 3-dimensional piecewise-linear system are calculated, thedynamical orbits of the corresponding perturbed systems are simulated.

关键词： lincar systems stability robustness parameter perturbation computational methods

Processing HREM Image of Mn-Al Icosahedral Quasicrystal

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International Journal of minerals,Metallurgy and Materials 1998年第2期12卷 113-114页

作者： lequan min xiaodan zhang Applied Science School, UST Beijing, Beijing 100083, China Univ Sci & Technol Beijing Sch Appl Sci Beijing 100083 Peoples R China

THE high resolution electron microscopic (HREM) images of Al-Mn icosahedral quasicrystals (QC) with the incident beam along the five-fold symmetry axis

关键词： HREM Mn Al Processing HREM Image of Mn-Al Icosahedral Quasicrystal

Nonclassical Plane-crystallographic Groups and Their Applications Ⅲ

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International Journal of minerals,Metallurgy and Materials 1997年第1期11卷 55-60页

作者： min lequan zhang xiaodan(Applied Science School, USTB, Beijing 100083, China)

Six kinds of nonclassical periodic lattices with locally 10-fold rotational symmetries are proposed. They can be delineated via nonclassical plane-crystallographic groups. The projections on the planes of corresponding unit cells consisting of embedding polyhedra generate the periodic lattices, respectively. The Fourier-transform patterns of the periodiclattices have almost perfect 10-fold rotational symmetries, which are very similar to those displaying in the electron-diffraction patterns of so-called quasicrystals.

关键词： nonclassical crystallographic groups locally 10-fold symmetry Fourier-transform patterns quasicrystals

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谷胱甘肽生产及在水产养殖中的应用

饲料工业 2024年第4期45卷 51-55页

作者：李敏殷述亭迟晓丹威海海洋职业学院山东威海264300

谷胱甘肽(glutathione,GSH)是一种含有巯基的天然小分子活性肽,广泛地存在于动物、植物及微生物中,是生物体内重要的抗氧化剂、免疫增强剂和解毒剂。近些年研究发现,GSH能够促进水产养殖动物的生长,改善抗氧化能力及免疫能力,并具有较... 详细信息

谷胱甘肽(glutathione,GSH)是一种含有巯基的天然小分子活性肽,广泛地存在于动物、植物及微生物中,是生物体内重要的抗氧化剂、免疫增强剂和解毒剂。近些年研究发现,GSH能够促进水产养殖动物的生长,改善抗氧化能力及免疫能力,并具有较强的解毒作用。文章简述了GSH的生产及在水产养殖中的应用原理和效果,为GSH在水产养殖中的开发应用提供参考。

关键词：谷胱甘肽水产养殖生长抗氧化免疫解毒

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45°倾斜应用的多通道干涉截止滤光片研制

传感器与微系统 2024年第2期43卷 110-112页

作者：高晓丹刘岚姚敏魏纯武汉东湖学院电子信息工程学院湖北武汉430212

光纤通信的发展对通信器件中薄膜滤光片提出了新的要求。根据45°倾斜应用的多通道干涉截止滤光片的设计指标,选择Nb2O5和SiO2为高、低折射率材料设计非规整膜系,以减少偏振效应的影响。结合APS1104型镀膜机的特点,分析了设计膜系的膜... 详细信息

光纤通信的发展对通信器件中薄膜滤光片提出了新的要求。根据45°倾斜应用的多通道干涉截止滤光片的设计指标,选择Nb2O5和SiO2为高、低折射率材料设计非规整膜系,以减少偏振效应的影响。结合APS1104型镀膜机的特点,分析了设计膜系的膜层灵敏度和薄膜生长过程中的模拟监控曲线,判断设计薄膜的可镀制性。然后采取直接光学监控方式,选择合适的镀制工艺成功镀制滤光片。测试结果表明:滤光片在45°倾斜应用条件下,1255~1365 nm、1475~1502 nm双通带最大插入损耗为0.199 dB,1547~1565 nm为反射带,通带隔离度为17.3 dB,满足系统应用需求。

关键词：薄膜截止滤光片偏振效应膜系非规整层

安氏分类下颞下颌关节盘动态位置与形态变化的观察

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中华口腔医学杂志 2024年第10期59卷 1019-1026页

作者：母晓丹刘华蔚黄晓峰胡敏首都医科大学附属北京友谊医院口腔科北京解放军总医院口腔颌面外科北京

目的了解不同安氏分类下颞下颌关节(TMJ)关节盘在关节运动中的动态变化, 为了解关节功能运动提供参考, 并为临床影像更准确诊断提供依据。方法纳入2022年1月至2024年4月期间就诊于首都医科大学附属北京友谊医院及解放军总医院的颞下颌... 详细信息

目的了解不同安氏分类下颞下颌关节(TMJ)关节盘在关节运动中的动态变化, 为了解关节功能运动提供参考, 并为临床影像更准确诊断提供依据。方法纳入2022年1月至2024年4月期间就诊于首都医科大学附属北京友谊医院及解放军总医院的颞下颌关节紊乱病患者30例(男性13例, 女性17例), 年龄(34.4±8.5)岁, 通过MRI对其TMJ从闭口位至最大开口位, 再至闭口位进行多层面动态成像, 观察关节盘的位置及形态变化。结果错畸形关节盘无移位患者在开闭口运动过程中, 其关节盘形态不尽相同, 但最大开口位时, 关节盘均位于上颌结节正下方, 其形态均呈双凹形。就不可复性关节盘前移位而言, 安氏Ⅰ类中, 由最大开口回至闭口前, 关节盘后缘均与髁突前斜面接触;安氏Ⅱ类中, 由开口初至最大开口位, 关节盘后缘与髁突前斜面接触;安氏Ⅲ类中, 整个运动过程中, 关节盘后缘始终与髁突前斜面接触;其中, 部分患者闭口位时, 关节盘呈现前移位状态, 其形态发生折叠现象;当其开口度为2.5cm时, 关节盘一定程度上移, 距离髁突前斜面更近, 其形态亦发生部分改变;当开口度为4.3cm时, 关节盘形态呈典型的双凹形, 位于关节结节前斜面与髁突后斜面之间, 因过大张口存在部分后移, 但足以表明达到最大开口度时其关节盘是可复的。就可复性关节盘前移位而言, 安氏Ⅰ类开口初和闭口末, 关节盘后缘与髁突前斜面接触;安氏Ⅱ类中则未观察到关节盘后缘与髁突前斜面接触, 且其关节盘仅在开口初及闭口末存在关节盘前移位。安氏Ⅲ类中, 闭口末时, 其关节盘后缘与髁突前斜面接触。结论通过颞下颌关节多层面动态MRI成像数据可动态观察TMJ运动, 直观且准确地显示关节盘在运动中的位置和形态, 可作为TMJ静态常规MR成像的有益补充。患者TMJ需达到最大开口位, 方可判断关节盘移位的可复与否。

关键词：颞下颌关节动态MR 错, 安氏Ⅰ类错, 安氏Ⅱ类错, 安氏Ⅲ类下颌骨髁状突