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An Enzyme-Free Amperometric Sensor Based on Self-Assembling Ferrocene-Conjugated Oligopeptide for Specific Determination of L-Arginine

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Chinese Journal of Chemistry 2021年第10期39卷 2755-2762页

作者： Kai-Jie Zhu Li Zhou ling Wu Sai-Fei Feng Hui-Ying Hu jing-lin he Yu-Min he Ze-Meng Feng Yu-Long Yin Donghong Yu Zhong Cao Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation and Hunan Provincial Key Laboratory of CytochemistrySchool of Chemistry and Biological EngineeringChangsha University of Science and TechnologyChangshaHunan410114 China Institute of Subtropical Agriculture Chinese Academy of SciencesChangshaHunan 410125China Department of Chemistry and Bioscience Aalborg UniversityDK-9220 AalborgEastDenmark

Main observation and conclusion An enzyme-free amperometric sensor based on a heptadecapeptide possessing an electroactive ferrocene(Fc)linker as ferrocene-Gly-Gly-Gly-Gly-Phe-Gly-His-Ile-His-Glu-Gly-Tyr-Gly-Gly-Gly-Gly-Lys-(CH_(2))_(4)-dithiocyclopentane self-assembled on gold substrate was designed and fabricated for specific determination of L-arginine(L-Arg).The detection mechanism is based on conformational change of surface-immobilized peptide induced by the target L-Arg,which was confirmed via SEM,TEM,AFM,XPS,and SPR *** binding affinity and the recognition feasibility of immobilized specific and non-specific peptides were also assessed using electrochemical impedance spectroscopy(EIS),cyclic voltammetry(CV),and differential pulse voltammetry(DPV).The proposed method can serve as“signal-on”sensor for detection of L-Arg down to 31 pmol/L with broad linear range(0.0001 to 10μmol/L).Furthermore,the Fc-conjugated specific peptide sensor was successfully applied to the determination of L-Arg in pig serums with a recovery rate of 97.5%—106.9%,and its test results are in good agreement with that of chromatographic instrument,evidencing that the oligopeptide-based sensor can be served as a simple and enzyme-free biosensing platform towards L-Arg for future application.

关键词： L-Arginine Peptides Surface Analysis Enzyme-Free Amperometric Sensor

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A Study of Siliceous Pneumoconiosis in a Desert Area of Sunan County,Gansu Province,China

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Biomedical and Environmental Sciences 1993年第3期6卷 217-222页

作者： XU XIU-ZheN’, CAT XI-GUANG, MEN XIAN-SEN, YANG PENG-YUN, YANG jing-FU, jing SONG-lin he JI-HUA, AND SI WEI-YIPeople’s Hospital of Gansu Province Sunan County Hospital of Gansu Province, Lanzhou730000, China People's Hospital of Gansu Province Lanzhou China.

Three hundred and ninety five residents in a desert area were examined with chest radiographs and 28 cases with siliceous pneumoconiosis were found. The prevalence of siliceous pneumoconiosis was 7.09%, and that over 40 years of age was 21%. The histological findings of lungs from a camel living in that area for 20 years also confirmed to have siliceous pneumoconiosis.

关键词： A Study of Siliceous Pneumoconiosis in a Desert Area of Sunan County Gansu Province China

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Dip2a regulates stress susceptibility in the basolateral amygdala

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Neural Regeneration Research 2025年第6期20卷 1735-1748页

作者： jing Li Zixuan he Weitai Chai Meng Tian Huali Yu Xiaoxiao he Xiaojuan Zhu Key Laboratory of Molecular Epigenetics Ministry of Education Institute of Genetics and CytologyNortheast Normal UniversityChangchunJilin ProvinceChina

Dysregulation of neurotransmitter metabolism in the central nervous system contributes to mood disorders such as depression, anxiety, and post–traumatic stress disorder. Monoamines and amino acids are important types of neurotransmitters. Our previous results have shown that disco-interacting protein 2 homolog A(Dip2a) knockout mice exhibit brain development disorders and abnormal amino acid metabolism in serum. This suggests that DIP2A is involved in the metabolism of amino acid–associated neurotransmitters. Therefore, we performed targeted neurotransmitter metabolomics analysis and found that Dip2a deficiency caused abnormal metabolism of tryptophan and thyroxine in the basolateral amygdala and medial prefrontal cortex. In addition, acute restraint stress induced a decrease in 5-hydroxytryptamine in the basolateral amygdala. Additionally, Dip2a was abundantly expressed in excitatory neurons of the basolateral amygdala, and deletion of Dip2a in these neurons resulted in hopelessness-like behavior in the tail suspension test. Altogether, these findings demonstrate that DIP2A in the basolateral amygdala may be involved in the regulation of stress susceptibility. This provides critical evidence implicating a role of DIP2A in affective disorders.

关键词： 5-hydroxytryptamine acute restraint stress basolateral amygdala CaMKII neurons DIP2A metabolomics neurotransmitters principal component analysis stress susceptibility tryptophan

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Unraveling post-growth mechanisms of monolayer CsPbBr3 nanocubes:Laser-enhanced transformations and cathodoluminescence-electron microscopy correlations

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Journal of Energy Chemistry 2025年第1期100卷 146-156页

作者： Mingxing Li Xiaoge Wang Xiaofan Cao Zhiqun he Chunjun Liang Mingxing Chen jing Ju Fangtian You Key Laboratory of Luminescence and Optical Information Ministry of Education Institute of Optoelectronic Technology Beijing Jiaotong University Beijing National Laboratory for Molecular Sciences (BNLMS) College of Chemistry and Molecular Engineering Peking University

Lead-halide perovskite nanoparticles（LHP NPs） are highly promising materials for next-generation displays and solid-state lighting due to their exceptional optical properties. However, their inherent instability presents a significant challenge. Recent advances have demonstrated that optoelectronic devices based on monolayer nanoparticle films exhibit both high luminescence efficiency and long-term *** research demonstrates that mobility limitations and anisotropic alignments in CsPbBr3nanocube monolayer films are key to their stabilization, hindering spontaneous growth through face-to-face fusion and resulting in the formation of connecting necks in a diagonal direction. Introducing laser irradiation confirmed this by significantly accelerating nanocubes growth, increasing mobility, and enhancing local structural ordering, leading to larger and more regularly shaped nanosheets. Fourier transform infrared spectroscopy and energy dispersive spectroscopy line-scan analyses indicated that laser irradiation did not disrupt the ligand structure. Transmission electron microscopy and correlative cathodoluminescence electron microscopy revealed the effects of post-growth and heterogeneous structures, including enhanced luminescence and inhomogeneous intensity in the nanosheets. These findings deepen the understanding of the post-growth mechanism of monolayer nanoparticles and the structure-emission correlation and highlight the unique role of laser irradiation in directing the formation of well-defined and regular nanostructures.

关键词： Post-growth mechanism heterogeneous structure Single-particle spectroscopy Laser irradiation

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Dielectric-ion-conductive ZnNb2O6 layer enabling rapid desolvation and diffusion for dendrite-free Zn metal batteries

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Journal of Energy Chemistry 2025年第1期100卷 693-701页

作者： Haifeng Yang Jian Wang Panpan Zhang Xiaomin Cheng Qinghua Guan jing Dong Bixian Chen Lujie Jia jing Zhang Yongzheng Zhang Yunjian Liu Hongzhen lin School of Materials Science and Engineering Jiangsu University i-Lab & CAS Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences helmholtz Institute Ulm (HIU) Karlsruhe Institute of Technology (KIT) School of Materials Science and Engineering Xi'an University of Technology State Key Laboratory of Chemical Engineering East China University of Science and Technology

Rechargeable aqueous zinc-metal batteries （AZMBs） are promising candidates for large-scale energy storage systems due to their low cost and high ***,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn（H2O）62+solvation ***,learnt from self-generated solid electrolyte interphase （SEI） in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface （ZNB@Zn）,acting as a rapid desolvation *** zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical ***,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility （99.54%） even under high current density and depth of discharge ***,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g-1and outstanding rate performance up to 10 A *** large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.

关键词： Zn metal battery Dielectric artificial layer Rapid ion diffusion Zincophilic diffusion Active water inhibition

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4-羟基-2,2,6,6-四甲基哌啶基-N-氧化物对高原缺氧小鼠心肌组织损伤的保护作用及机制研究

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中国药学杂志 2017年第18期52卷 1597-1603页

作者：马慧萍景临林何蕾樊鹏程贾正平兰州总医院药剂科全军高原环境损伤防治重点实验室兰州730050

目的研究4-羟基-2,2,6,6-四甲基哌啶基-N-氧化物(tempol)对高原缺氧小鼠心肌组织的保护作用及机制。方法将110只小鼠随机分为正常对照组、缺氧模型组、乙酰唑胺组和tempol组,单次腹腔注射给药30 min后,在模拟海拔8 000 m环境停留12 h,... 详细信息

目的研究4-羟基-2,2,6,6-四甲基哌啶基-N-氧化物(tempol)对高原缺氧小鼠心肌组织的保护作用及机制。方法将110只小鼠随机分为正常对照组、缺氧模型组、乙酰唑胺组和tempol组,单次腹腔注射给药30 min后,在模拟海拔8 000 m环境停留12 h,眼眶取血后,测定血清中乳酸脱氢酶(LDH)和肌酸激酶(CK)活性,然后处死小鼠,检测心肌组织中过氧化氢(H_2O_2)和丙二醛(MDA)含量以及ATP酶和抗氧化酶的活性,蛋白印迹法检测缺氧诱导因子-1α(HIF-1α)、血管内皮生长因子(VEGF)、核因子E2相关因子2(Nrf2)和血红素氧合酶-1(HO-1)蛋白的表达水平。结果与正常对照组相比,缺氧模型组血清中CK和LDH的活性显著增加,心肌组织中H_2O_2和MDA含量显著升高,ATP酶和抗氧化酶的活性显著降低,HIF-1α、VEGF、Nrf2和HO-1蛋白表达增强。经tempol预处理后能够显著降低高原缺氧小鼠血清中CK和LDH的活性,减少心肌组织中H_2O_2和MDA含量,提高ATP酶和抗氧化酶的活性,降低HIF-1α、VEGF蛋白表达,显著提高Nrf2和HO-1蛋白表达。结论 Tempol对高原缺氧诱导的心肌组织损伤具有保护作用,该作用与改善能量代谢,清除自由基,激活Nrf2/HO-1信号途径,提高抗氧化酶活性,降低机体氧化应激有关。

关键词： 4-羟基-2,2,6,6-四甲基哌啶基-N-氧化物低压低氧心肌损伤抗氧化酶 Nrf2/HO-1途径

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论历史教学中学生理性思维能力的培养

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闽西职业技术学院学报 2013年第4期15卷 97-99,103页

作者：王琳林景和福建师大附中福州350007 福州教育研究院福州350007

理性思维能力是建立在证据和逻辑推理基础上的独立思考能力。高中阶段是培养理性思维能力的重要阶段,历史学科具有培养学生理性思维能力的独特学科优势。为培养学生理性思维能力,高中历史教学中,教师应转变观念,增强培养学生理性思维能... 详细信息

理性思维能力是建立在证据和逻辑推理基础上的独立思考能力。高中阶段是培养理性思维能力的重要阶段,历史学科具有培养学生理性思维能力的独特学科优势。为培养学生理性思维能力,高中历史教学中,教师应转变观念,增强培养学生理性思维能力的意识;设置理性思维能力培养的具体目标,有意识地发掘培养学生理性思维的内容;结合历史研究方法的特点培养学生理性思维能力;创设良好的课堂环境,转变教学方式并引导学生转变学习方式,为理性思维能力的培养提供良好平台。

关键词：高中历史教学理性思维能力

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云南师宗和江苏盱眙中华按蚊的分子鉴定及COII基因序列分析

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中国兽医杂志 2016年第11期52卷 20-22,25页

作者：胡骑王静林何于雯孙强吴晶云南省热带亚热带动物病毒病重点实验室云南省畜牧兽医科学院云南昆明650224

为了了解云南省师宗县和江苏省盱眙县中华按蚊的分子鉴定及COII基因序列特征,2014年7月在云南省师宗县和江苏省盱眙县采集蚊虫标本,通过形态学鉴定出中华按蚊,再提取蚊虫基因组DNA,用COII基因特异引物和序列测定,然后采用生物信息学软... 详细信息

为了了解云南省师宗县和江苏省盱眙县中华按蚊的分子鉴定及COII基因序列特征,2014年7月在云南省师宗县和江苏省盱眙县采集蚊虫标本,通过形态学鉴定出中华按蚊,再提取蚊虫基因组DNA,用COII基因特异引物和序列测定,然后采用生物信息学软件进行核苷酸序列同源性和遗传进化分析。结果在云南省师宗县县城周围采集蚊虫标本314只,其中按蚊234只(74.52%);在江苏省盱眙县桂五镇采集蚊虫标本212只,其中按蚊143只(67.45%)。经形态学鉴定,每个地方挑选了8只疑似中华按蚊进行序列分析,结果显示,16只蚊虫COII核苷酸序列同源性在98%-100%之间,遗传进化分析显示,16只蚊虫全部与中华按蚊位于同一进化分支内。表明了采用分子鉴定的方法可有效地进行蚊虫种类鉴定。

关键词：中华按蚊 COII基因分子鉴定

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Highly conductive and stable iodine doped argyrodite electrolyte for all-solid-state lithium batteries

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Journal of Energy Chemistry 2025年第1期100卷 50-58页

作者： Gaozhan Liu jing Zhang jing Yang jinghui Chen Xingyue Xiao Xiayin Yao Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Lithium argyrodites with high ionic conductivity and low cost are considered as one of the most prospective solid electrolytes for all-solid-state lithium ***,the poor chemical stability and compatibility with lithium metal limit their ***,Li5.4PS4.4Cl1.4I0.2solid electrolyte with high ionic conductivity of 11.49 m S cm-1and improved chemical stability is synthesized by iodine *** ultra-thin Li5.4PS4.4Cl1.4I0.2membrane with thickness of 10μm can be obtained by wet coating process,exhibiting a high ionic conductivity of 2.09 mS cm-1and low areal resistance of 1.17Ω***,iodine doping could in-situ form LiI at the lithium/electrolyte interface and improve the critical current density of Li5.4PS4.4Cl1.6from 0.8 to 1.35 mA *** resultant LiCoO2/Li5.4PS4.4Cl1.4I0.2/Li battery shows excellent cycling stability at 1 C,with a reversible specific capacity of 110.1 mA h g-1and a retention of 80.5% after 1000 *** addition,the assembled LiCoO2/Li5.4PS4.4Cl1.4I0.2membrane/Li pouch cell delivers an initial discharge capacity of 110.4 mA h g-1and 80.5% capacity retention after 100 cycles.

关键词： Argyrodite electrolytes Iodine doping Ionic conductivity Stability All-solid-state lithium battery

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3D Printing of Tough Hydrogel Scaffolds with Functional Surface Structures for Tissue Regeneration

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Nano-Micro Letters 2025年第2期17卷 18-45页

作者： Ke Yao Gaoying Hong Ximin Yuan Weicheng Kong Pengcheng Xia Yuanrong Li Yuewei Chen Nian Liu jing he Jue Shi Zihe Hu Yanyan Zhou Zhijian Xie Yong he State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Liangzhu Laboratory Zhejiang UniversityHangzhou 310027People’s Republic of China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province College of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Stomatology Hospital School of StomatologyZhejiang University School of MedicineHangzhou 310027People’s Republic of China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001People’s Republic of China Institute of Digital Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006People’s Republic of China

Hydrogel scaffolds have numerous potential applications in the tissue engineering ***,tough hydrogel scaffolds implanted in vivo are seldom reported because it is difficult to balance biocompatibility and high mechanical *** by Chinese ramen,we propose a universal fabricating method(printing-P,training-T,cross-linking-C,PTC&PCT)for tough hydrogel scaffolds to fill this ***,3D printing fabricates a hydrogel scaffold with desired structures(P).Then,the scaffold could have extraordinarily high mechanical properties and functional surface structure by cycle mechanical training with salting-out assistance(T).Finally,the training results are fixed by photo-cross-linking processing(C).The tough gelatin hydrogel scaffolds exhibit excellent tensile strength of 6.66 MPa(622-fold untreated)and have excellent ***,this scaffold possesses functional surface structures from nanometer to micron to millimeter,which can efficiently induce directional cell ***,this strategy can produce bionic human tissue with mechanical properties of 10 kPa-10 MPa by changing the type of salt,and many hydrogels,such as gelatin and silk,could be improved with PTC or PCT *** experiments show that this scaffold can effectively promote the new generation of muscle fibers,blood vessels,and nerves within 4 weeks,prompting the rapid regeneration of large-volume muscle loss injuries.

关键词： 3D printing Tough hydrogel scaffold Functional surface structure Tissue regeneration Biomaterials

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