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Actively tunable electromagnetically induced transparency in hybrid Dirac-VO2 metamaterials

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Optoelectronics Letters 2025年第1期21卷 13-20页

作者： DI ke XIE Meng XIA Huarong CHENG Anyu LIU yu DU Jiajia Department of Optoelectronic Engineering Chongqing University of Post and Telecommunications Chongqing key Laboratory of Autonomous Navigation and Microsystem Chongqing University of Posts and Telecommunications Department of Automation Chongqing University of Post and Telecommunications

In this paper, we present a metamaterial structure of Dirac and vanadium dioxide（VO2） and investigate its optical properties using the finite-difference time-domain（FDTD） technique. Using the phase transition feature of VO2, the design can realize active tuning of the plasmon induced transparency（PIT） effect at terahertz frequency, thereby converting from a single PIT to a double-PIT. When VO2is in the insulating state, the structure is symmetric to obtain a single-band PIT effect. When VO2is in the metallic state, the structure turns asymmetric to realize a dual-band PIT effect. This design provides a reference direction for the design of actively tunable metamaterials. Additionally, it is discovered that the transparent window's resonant frequency and the Fermi level in this structure have a somewhat linear relationship. In addition, the structure achieves superior refractive index sensitivity in the terahertz band, surpassing 1 THz/RIU. Consequently, the design exhibits encouraging potential for application in refractive index sensors and optical switches.

关键词： Transparency

Magnetic Solid-Phase Extraction of Phthalate Esters from Environmental Water Samples using Fibrous Phenyl-functionalized Fe3O4@SiO2@KCC-1

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Chinese Journal of Chemical Physics 2020年第6期33卷 749-756,I0003页

作者： Xue-zheng Zhou Xiang-yang Yan Ling Zhu Ming Ma Ya Dai Chang-guo Wang Li-jun Zhu ke-jie yu Shao-min Liu Chongqing key Laboratory of Scientic Utilization of Tobacco Resources Chongqing 400060China Department of Chemistry University of Science and Technology of ChinaHefei 230026China

A new kind of phenyl-functionalized magnetic fibrous mesoporous silica(Fe3 O4@Si O2@KCC-1-phenyl) was prepared by copolymerization as an efficient adsorbent for the magnetic extraction of phthalate esters from environmental water samples. The obtained Fe3 O4@Si O2@KCC-1-phenyl showed monodisperse fibrous spherical morphology, fairly strong magnetic response(29 emu/g), and an abundant π-electron system, which allowed rapid isolation of the Fe3 O4@Si O2@KCC-1-phenyl from solutions upon applying an appropriate magnetic field. Several variables that affect the extraction efficiency of the analytes,including the type of the elution solvent, amount of adsorbent, extraction time and reusability, were investigated and optimized. Under optimum conditions, the Fe3 O4@Si O2@KCC-1-phenyl was used for the extraction of four phthalate esters from environmental water samples followed by high-performance liquid chromatographic analysis. Validation experiments indicated that the developed method presented good linearity(0.1-20 ng/m L), low limit of detection(7.5-29 μg/L, S/N =3). The proposed method was applied to the determination of phthalate esters in different real water samples, with relative recoveries of 93%-103.4%and relative standard deviation of 0.8%-8.3%.

关键词： Fibrous mesoporous silica Phenyl-functionalized Magnetic solid-phase ex-traction High performance liquid chromatography Phthalate esters Environmental water

Stability and Stabilization of Sampled-Data Based LFC for Power Systems:A Data-Driven Method

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 291-293页

作者： yu-Long Fan Chuan-ke Zhang Yong He the School of Automation China University of Geosciences the Hubei key Laboratory of Advanced Control and Intelligent Automation for Complex Systems the Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education IEEE

Dear Editor,This letter is concerned with stability analysis and stabilization design for sampled-data based load frequency control(LFC) systems via a data-driven method. By describing the dynamic behavior of LFC systems based on a data-based representation, a stability criterion is derived to obtain the admissible maximum sampling interval(MSI) for a given controller and a design condition of the PI-type controller is further developed to meet the required MSI. Finally, the effectiveness of the proposed methods is verified by a case study.

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CNKSR2 interactome analysis indicates its association with the centrosome/microtubule system

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Neural Regeneration Research 2025年第8期20卷 2420-2432页

作者： Lin Yin Yalan Xu jie Mu yu Leng Lei Ma yu Zheng Ruizhi Li Yin Wang Peifeng Li Hai Zhu Dong Wang Jing Li Institute for Translational Medicine The Affiliated Hospital of Qingdao UniversityMedical CollegeQingdao UniversityQingdaoShandong ProvinceChina School of Basic Medicine Qingdao UniversityQingdaoShandong ProvinceChina College of Life Sciences and School of PharmacyMedical CollegeQingdao UniversityQingdaoShandong ProvinceChina Department of Urology Qingdao Municipal Hospital Affiliated to Qingdao UniversityQingdaoShandong ProvinceChina

The protein connector enhancer of kinase suppressor of Ras 2(CNKSR2),present in both the postsynaptic density and cytoplasm of neurons,is a scaffolding protein with several protein-binding *** of the CNKSR2 gene have been implicated in neurodevelopmental disorders,particularly intellectual disability,although the precise mechanism involved has not yet been fully *** has demonstrated that CNKSR2 plays a role in facilitating the localization of postsynaptic density protein complexes to the membrane,thereby influencing synaptic signaling and the morphogenesis of dendritic ***,the function of CNKSR2 in the cytoplasm remains to be *** this study,we used immunoprecipitation and high-resolution liquid chromatography-mass spectrometry to identify the interactors of *** a combination of bioinformatic analysis and cytological experiments,we found that the CNKSR2 interactors were significantly enriched in the proteome of the *** also showed that CNKSR2 interacted with the microtubule protein DYNC1H1 and with the centrosome marker *** colocalization analysis confirmed the centrosomal localization of *** we downregulated CNKSR2 expression in mouse neuroblastoma cells(Neuro 2A),we observed significant changes in the expression of numerous centrosomal *** manipulation also affected centrosome-related functions,including cell size and shape,cell proliferation,and ***,we found that CNKSR2 interactors were highly enriched in de novo variants associated with intellectual disability and autism spectrum *** findings establish a connection between CNKSR2 and the centrosome,and offer new insights into the underlying mechanisms of neurodevelopmental disorders.

关键词： autism spectrum disorder centrosome CNKSR2 intellectual disability interactome mass spectrometry microtubule neurodevelopmental disease protein complexes protein-protein interactions

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甲醛对小鼠骨髓组织的毒性作用

中国环境科学 2012年第6期32卷 1129-1133页

作者：柯玉洁秦晓丹李兰张玉超杜娟丁书茂华中师范大学生命科学学院遗传调控与整合生物学湖北省重点实验室湖北武汉430079

为了探讨甲醛暴露对小鼠骨髓组织的毒性影响,选用SPF级昆明雄性小鼠作为研究对象,用浓度为0.5,1.0,3.0mg/m3的气态甲醛对小鼠进行连续动态染毒72h,染毒后检测骨髓细胞中细胞周期变化、DPC(DNA-蛋白质交联)、DNA稳定性、骨髓细胞分化关... 详细信息

为了探讨甲醛暴露对小鼠骨髓组织的毒性影响,选用SPF级昆明雄性小鼠作为研究对象,用浓度为0.5,1.0,3.0mg/m3的气态甲醛对小鼠进行连续动态染毒72h,染毒后检测骨髓细胞中细胞周期变化、DPC(DNA-蛋白质交联)、DNA稳定性、骨髓细胞分化关键因子Nucleostemin和CYP1B1在各暴露浓度组中的表达情况.结果表明:甲醛暴露造成骨髓细胞的DNA损伤,其DNA稳定性和DPC效应均呈现良好的剂量-效应关系.骨髓细胞分化关键因子Nucleostemin表达量在各浓度染毒组中与空白组相比,1.0mg/m3浓度组有极显著性升高,而0.5和3.0mg/m3浓度组则是极显著性降低,与空白组相比CYP1B1基因在0.5,1.0,3.0mg/m3浓度组中表达,有极其显著性差异,并且1.0mg/m3浓度组上升较多.本次研究表明,甲醛暴露能影响小鼠骨髓组织细胞正常生长代谢.

关键词：甲醛 SPF级昆明种纯系雄性小鼠骨髓组织毒性研究

Hypoxia-preconditioned bone marrow-derived mesenchymal stem cells protect neurons from cardiac arrest-induced pyroptosis

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Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong Tang Nan Zheng Qingming Lin Yan You Zheng Gong Yangping Zhuang Jiali Wu yu Wang Hanlin Huang Jun ke Feng Chen Shengli Clinical Medical College of Fujian Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fujian Provincial key Laboratory of Emergency Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dysfunction,and post-cardiopulmonary resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchymal stem cells and reduce pyroptosis after cardiac arrest,but the specific mechanisms by which hypoxia-preconditioned bone marrow–derived mesenchymal stem cells protect against brain injury after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchymal stem cells and oxygen–glucose deprived primary neurons and found that hypoxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal pyroptosis,possibly through inhibition of the MAPK and nuclear factor κB ***,we transplanted hypoxia-preconditioned bone marrow–derived mesenchymal stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by *** results showed that hypoxia-preconditioned bone marrow–derived mesenchymal stem cells significantly reduced cardiac arrest–induced neuronal pyroptosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchymal stem cells inhibited these *** conclude,hypoxia-preconditioned bone marrow–derived mesenchymal stem cells offer a promising therapeutic approach for neuronal injury following cardiac arrest,and their beneficial effects are potentially associated with increased expression of the liver isoform of phosphofructokinase following hypoxic preconditioning.

关键词： bone marrow–derived mesenchymal stem cells cardiac arrest cardiac resuscitation hypoxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress pyroptosis reactive oxygen species

早期控制糖速对低血糖新生儿血清S100B蛋白和神经元特异性烯醇化酶水平的影响

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临床药物治疗杂志 2018年第8期16卷 35-38,42页

作者：柯玉洁陈细香湖北省阳新县人民医院新生儿科湖北黄石435200

目的:探讨早期控制糖速对低血糖新生儿血清S100B蛋白(S100B)、神经元特异性烯醇化酶(NSE)水平的影响。方法:选取2015年1月至2018年1月阳新县人民医院收治的低血糖新生儿196例,依据早期葡萄糖治疗1h后糖速分为低速组(1~3 mmol·L^(-1)·h... 详细信息

目的:探讨早期控制糖速对低血糖新生儿血清S100B蛋白(S100B)、神经元特异性烯醇化酶(NSE)水平的影响。方法:选取2015年1月至2018年1月阳新县人民医院收治的低血糖新生儿196例,依据早期葡萄糖治疗1h后糖速分为低速组(1~3 mmol·L^(-1)·h^(-1),n=50例)、中速组(3~5 mmol·L^(-1)·h^(-1), n=98例)、高速组(5~9mmol·L^(-1)·h^(-1),n=48例),比较3组血清S100B、NSE水平和新生儿神经行为测定评分(NBNA)、疗效、脑损伤情况。结果:3组治疗后血清S100B、NSE水平明显低于治疗前,中速组治疗后血清S100B、NSE水平明显低于低速组和高速组;3组治疗后第7、14天的NBNA评分明显高于治疗前,中速组治疗后第7、14天的NBNA评分明显高于低速组和高速组;中速组意识、反射、肌张力恢复时间明显低于低速组和高速组;中速组脑损伤发生率明显低于低速组和高速组。以上差异均有统计学意义(P<0. 05)。结论:早期控制糖速在3~5 mmol·L^(-1)·h^(-1)可有效改善低血糖新生儿血清S100B、NSE水平和神经功能,有利于减少新生儿脑损伤的发生,值得临床作进一步推广。

关键词：糖速低血糖新生儿 S100B蛋白神经元特异性烯醇化酶

高度近视植入Bigbag人工晶状体远期的囊袋稳定性研究

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国际眼科杂志 2015年第6期15卷 1086-1088页

作者：方晓珊杨鸿昌余杰克李楚旋中国广东省普宁市人民医院眼科 515300

目的:了解高度近视专用的人工晶状体Bigbag远期的囊袋稳定性。方法:前瞻对照试验。选择2012-05/2014-02入院的眼轴≥28mm的高度近视合并或不合并白内障的患者,分为两组,行超声乳化白内障吸除术,分别植入Bigbag人工晶状体和Sensar人工晶... 详细信息

目的:了解高度近视专用的人工晶状体Bigbag远期的囊袋稳定性。方法:前瞻对照试验。选择2012-05/2014-02入院的眼轴≥28mm的高度近视合并或不合并白内障的患者,分为两组,行超声乳化白内障吸除术,分别植入Bigbag人工晶状体和Sensar人工晶状体,观察术后6mo的并发症、晶状体后囊的状况,比较术前术后晶状体后囊到视网膜距离的差值。结果:共有52例63眼纳入研究,Bigbag组24例30眼,其中男9例11眼,女15例19眼;Sensar组28例33眼,其中男12例14眼,女16例19眼。术后6mo时,Bigbag组术前术后晶状体后囊到视网膜距离的差值为1.49±0.06mm,与Sensar组(1.67±0.09mm)相比,差异有显著统计学意义(P<0.01)。术后6mo时Bigbag组有2眼出现后囊膜皱缩(6.7%),Sensar组有9眼出现后囊皱缩(27.3%),差异有统计学意义(P=0.031)。结论:Big bag人工晶状体由于囊袋内的稳定性高,后囊膜皱缩的发生率也较低,更适合高度近视患者使用。

关键词：高度近视白内障超声乳化吸除术人工晶状体后囊膜皱缩

Homologous CoS2 interface with directed electron transfer and strong chloridion repulsion for efficient seawater oxidation

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Science China Chemistry 2025年

作者： yuan Tian Jiang-Bo Chen jie Ying Ge Tian yu-Xuan Xiao Yi Lu Si-Ming Wu Wei Geng Ling Shen Xiao-yu Yang State key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering and Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-Sen University National Energy key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Seawater electrolysis is a highly promising method to produce high energy density hydrogen,especially in dry areas that have scarce freshwater ***,application of seawater electrolysis is confronted by two major problems associated with catalysts employed for the anodic oxygen evolution reaction （OER） including the competitive hypochlorite evolution reaction（HCER） and strong chloridion （Cl–） triggered *** studies aimed at overcoming these problems,a facile method has been developed to synthesize a homologous CoS2heterojunction as an OER *** to a difference in work functions at the interface and increased electron density,this material has directed electron transfer and strong chloridion repulsion properties,*** have shown that CoS2achieves low overpotentials of 289 and 322 mV at 10 mA cm-2current density in respective alkaline （1 M KOH） and alkaline simulated seawater ***,the outstanding stability of CoS2is reflected in a negligible decline in activity during promotion of the OER for 100 *** of density functional theory calculations reveal that the homologous CoS2heterojunction promotes directed electron transport for optimizing adsorption/desorption of reactive species and heightens the Cl-adsorption energy for strongly repulsing Cl-,phenomena that enhance OER performance in alkaline simulated seawater.

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