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中国病原生物学杂志 2024年第11期19卷 1277-1282页

作者：黄婷婷陈定宇桂书琴赵艳王琴容周建奖谢渊贵州医科大学地方病与少数民族性疾病教育部重点实验室贵州贵阳550004 贵州医科大学分子生物学重点实验室华中科技大学同济医学院附属协和医院妇产科

目的探究幽门螺杆菌(Helicobacter pylori,Hp)感染对胃上皮细胞和C57BL/6小鼠胃组织中铁死亡相关脂代谢蛋白ACSL4、LPCAT3表达及对脂质过氧化物降解产物丙二醛(MDA)和4-羟基壬烯醛(4-HNE)水平的影响。方法用HpGZ7和Hp26695菌株感染正常... 详细信息

目的探究幽门螺杆菌(Helicobacter pylori,Hp)感染对胃上皮细胞和C57BL/6小鼠胃组织中铁死亡相关脂代谢蛋白ACSL4、LPCAT3表达及对脂质过氧化物降解产物丙二醛(MDA)和4-羟基壬烯醛(4-HNE)水平的影响。方法用HpGZ7和Hp26695菌株感染正常胃上皮GES-1细胞和胃癌AGS细胞,感染复数为50∶1,6 h、24 h、48 h后分别收集细胞总蛋白和细胞裂解液,Western blot检测ACSL4和LPCAT3的蛋白表达,试剂盒检测细胞裂解液MDA、4-HNE水平。用Hp灌胃感染C57BL/6小鼠1、3、6月,取胃黏膜组织并制备切片,免疫组织化学染色检测ACSL4、LPCAT3蛋白的表达。结果与未感染组比较,Hp感染GES-1(F值分别为18.82、13.07,4.28、13.03)和AGS(F值分别为14.51、25.88,17.90、16.62)细胞ACSL4、LPCAT3蛋白表达水平均增加,并随着感染时间的延长表达呈上升趋势,差异有统计学意义(P<0.05)。与未感染对照组比较,Hp感染C57BL/6小鼠胃组织中ACSL4、LPCAT3的表达水平均显著升高,其中LPCAT3表达水平增加更显著(F值分别为27.11,103.62,P<0.05)。MDA含量均高于未感染组(Hp感染AGS细胞6 h、24 h、48 h后分别为0.27±0.06、1.13±0.14、0.83±0.12,0.56±0.13、0.86±0.11、0.72±0.16。Hp感染GES-1细胞6h、24 h、48 h后分别为0.22±0.08、0.29±0.09、0.80±0.08,0.17±0.06、0.40±0.08、0.63±0.09),差异有统计学意义(F值分别为27.29、10.56,30.85、18.42,P<0.05)。4-HNE含量均高于未感染组(Hp感染AGS细胞6 h、24 h、48 h后分别为0.12±0.03、0.20±0.06、0.25±0.04,0.06±0.02、0.21±0.03、0.30±0.04。Hp感染GES-1细胞6 h、24 h、48 h后分别为0.23±0.06、0.36±0.06、0.63±0.09,0.19±0.04、0.19±0.05、0.41±0.07),差异有统计学意义(F值分别为7.48、32.31,16.83、12.55,P<0.05)。结论Hp感染可引起胃上皮细胞和C57BL/6小鼠胃组织中铁死亡相关脂代谢蛋白ACSL4、LPCAT3表达增加,细胞内脂质过氧化物降解产物MDA与4-HNE积累,提示Hp可能通过影响其感染细胞内的脂代谢水平,诱导胃上皮细胞发生铁死亡。

关键词：幽门螺杆菌铁死亡脂代谢 ACSL4 LPCAT3

Spin asymmetry and dipole moments inτ-pair production with ultraperipheral heavy ion collisions

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Science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 15-21页

作者： dingyu Shao Bin Yan Shu-Run Yuan cheng Zhang Department of Physics Center for Field Theory and Particle PhysicsFudan UniversityShanghai 200433China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Fudan UniversityShanghai 200433China Shanghai Research Center for Theoretical Nuclear Physics National Natural Science Foundation of China(NSFC)and Fudan UniversityShanghai 200438China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China School of Physics Peking UniversityBeijing 100871China

The anomalous magnetic(MDM)and electric(EDM)dipole moments of theτlepton serve as crucial indicators of new physics beyond the standard *** azimuthal angular asymmetry as a novel tool in ultraperipheral collisions(UPCs),we attain unparalleled precision in the study of these key *** by the highly linear polarization of coherent photons,this method uniquely enables both the MDM and EDM to contribute to the cos 2φangular distribution in similar ***,our approach substantially narrows the parameter space,excluding more than half of it compared to expected UPC-based measurements reliant solely on the total *** method not only provides improved constraints but also minimizes the need for additional theoretical assumptions,and offers a novel avenue to probe the EDM effects.

关键词： ultraperipheral collisions magnetic and electric dipole moments spin asymmetry

Formation of ZnSe magic-size clusters displaying optical absorption doublets from prenucleation clusters

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Nano Research 2024年第7期17卷 6741-6748页

作者： dingyu Zhao Shasha Wang Jiawei Xue Chunchun Zhang Shanling Wang Xiaoqin Chen Chaoran Luan Kui Yu Institute of Atomic and Molecular Physics Sichuan UniversityChengdu 610065China Engineering Research Center in Biomaterials Sichuan UniversityChengdu 610065China Analytical&Testing Center Sichuan UniversityChengdu 610065China College of Biomedical Engineering Sichuan UniversityChengdu 610065China

The formation pathway of colloidal semiconductor ZnSe magic-size clusters(MSCs)in a reaction that display an optical absorption doublet remains poorly *** reaction of Zn(OAc)_(2)/OLA(made from zinc acetate and oleylamine)and tri-noctylphosphine selenide(SeTOP)in OLA in the presence of diphenylphosphine(HPPh_(2))is studied,in which dMSC-345 displays a doublet peaking at 328/345 *** suggest that the development is from the clusters that form in the initial prenucleation stage of the *** clusters are the precursor compound(PC-299)of MSC-299(displaying an absorption singlet peaking at 299 nm).PC-299 transforms to PC-345 at a later *** presence of alcohol(such as methanol or ethylene glycol)promotes another pathway,which is the PC-299 to PC-320 ***-320 transforms to dMSC-320(with a doublet at 305/320 nm),followed by dMSC-345 via *** present study provides additional evidence that clusters(PC-299)form and transform(such as to dMSC-345 via PC-345)in the prenucleation stage of ZnSe quantum dots(QDs).

关键词： magic-size cluster(MSC) prenucleation cluster precursor compound(PC) quantum dot(QD) zinc selenide(ZnSe)

Hollow-structured all-silicon terahertz metasurface supporting quasi-bound states in the continuum for refractive index based Auramine O concentration sensing

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Photonics Research 2024年第7期12卷 1574-1582页

作者： XIN TANG HAODUO JIA LANBIN LI MING LI DAI WU KUI ZHOU PENG LI WEIJUN WANG JITAO LI dingyu YANG College of Optoelectronic Engineering Chengdu University of Information TechnologyChengdu 610225China Institute of Applied Electronics China Academy of Engineering PhysicsMianyang 621000China School of Precision Instruments and Opto-Electronics Engineering Tianjin UniversityTianjin 300072China Guizhou Zhenhua Fengguang Semiconductor Co. Ltd.Guiyang 550000China chengdu Huanyuxin Technology Co. Ltd.Chengdu 610095China

Quasi-bound states in the continuum (QBIC),with exceptionally high-Q factors and the local field enhancement effect,have found potential applications in matter *** the QBIC mechanism into terahertz(THz) metasurfaces can significantly enhance the interaction between incident THz waves and matter,providing a feasible platform for the detection of biochemical ***,most experimental studies on terahertz QBIC metasurfaces utilize metallic *** contrast,research on terahertz all-dielectric QBIC metasurfaces generally remains at the simulation stage due to the high fabrication process requirements,and transitioning to the experimental stage still poses many *** this paper,a hollow-structured all-silicon metasurface supporting THz QBIC is *** resonance of THz QBIC is excited via a simple hollow structure and observed in *** and experimental results demonstrated that the designed THz QBIC metasurface can achieve sensing of Auramine ***,it is the first study,to our knowledge,to employ a metasurface to sense Auramine ***,the sensing performance maintains good stability under different humidity and temperature *** study provides new references and insights for the design and implementation of THz QBIC,and also opens a new pathway for the detection of Auramine O.

关键词： supporting continuum refractive

Vulnerability and Conservation of Nearshore Cetaceans to Increasing Vessel Traffic:The Indo-Pacific Humpback Dolphin in the South China Sea

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Journal of Ocean University of China 2024年第4期23卷 1003-1014页

作者： LUO dingyu GUO Lang HUANG Nuoyan WANG Hongri ZENG Chen TANG Xikai XU Zhuo WU Yuping SUN Xian School of Marine Sciences Zhuhai Key Laboratory of Marine Bioresources and EnvironmentGuangdong Provincial Key Laboratory of Marine Resources and Coastal EngineeringPearl River Estuary Marine Ecosystem Research Sta-tionMinistry of EducationSun Yat-Sen UniversitySouthern Marine Science and Engineering Guangdong Labora-tory(Zhuhai)Zhuhai 519082China

A comprehensive risk assessment to evaluate the vulnerability of the nearshore cetaceans to increasing marine traffic is *** this study,the risk to Indo-Pacific humpback dolphins(Sousa chinensis)in the main habitats in China was assessed based on a semiquantitative spatial vulnerability analysis.85%of the(sub)population which overlapped with the lanes of ferries and/or cargo vessels,with exposure scores of 1.23±0.31(calculated based on the proportion of sea routes that overlap the dolphin’s range).A combination of high exposure to the sea routes and sensitivity to marine traffic would render the(sub)populations to be highly vulnerable(EPRE:5.21 and XM:4.47).A low frequency of vessels and an awareness of the ecology assures a low vulnerability(SH:2.43,EZ:2.73).Uncertainty scores were commonly lower for the higher vulnerable populations,and higher for the lower vulnerable populations,suggesting additional field data and more monitoring are *** years of field data have been used to analyze the influences of various types of marine traffic on humpback dolphin *** and non-fishing vessels were significantly different(χ^(2)=65.19,p<0.01).The humpback dolphins were attracted by fishing vessels(83.1%)but avoided non-fishing vessels(95.2%).We recommend a management with seasonal and geographical constraints,to balance economic development and environmental conservation.

关键词： Indo-Pacific humpback dolphin vessel impacts risk analysis protection strategy

Triple reverse order law for the Drazin inverse

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Applied Mathematics(A Journal of Chinese Universities) 2024年第1期39卷 55-68页

作者： WANG Hua ZHONG cheng-cheng College of Sciences Inner Mongolia University of TechnologyHohhot 010051China College of Engineering University of Jinan Quancheng CollegeYantai 265600China

In this paper,we investigate the reverse order law for Drazin inverse of three bound-ed linear operators under some commutation ***,the Drazin invertibility of sum is also obtained for two bounded linear operators and... 详细信息

关键词： Drazin inverse reverse order law space decomposition

Statistical properties of ideal photons in a two-dimensional dye-filled spherical cap cavity

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Chinese Physics B 2024年第10期33卷 258-268页

作者： Ze cheng School of Physics Huazhong University of Science and TechnologyWuhan 430074China

Within the framework of quantum statistical mechanics,we have proposed an exact analytical solution to the problemof Bose-Einstein condensation(BEC)of harmonically trapped two-dimensional(2D)ideal *** utilize this analyticalsolution to investigate the statistical properties of ideal photons in a 2D dye-filled spherical cap *** resultsof numerical calculation of the analytical solution agree completely with the foregoing experimental results in the BEC ofharmonically trapped 2D ideal *** analytical expressions of the critical temperature and the condensate fractionare derived in the thermodynamic *** is found that the 2D critical photon number is larger than the one-dimensional(1D)critical photon number by two orders of *** spectral radiance of a 2D spherical cap cavity has a sharppeak at the frequency of the cavity cutoff when the photon number exceeds the critical value determined by a temperature.

关键词： rigorous results in statistical mechanics Bose-Einstein condensation 2D photons

Analysis of multi-objective optimisation method for main insulation structure configuration scheme of valve-side winding of ultra-high voltage converter transformer considering multi-field coupling

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High Voltage 2024年第2期9卷 296-308页

作者： Lijun Yang Zhidong cheng Li cheng Ruijin Liao State Key Laboratory of Power Transmission Equipment Technology School of Electrical EngineeringChongqing UniversityChongqingChina

Because DC conductivities of oil-paper materials can be easily affected by electric field and temperature,the electrical properties under electro-thermal coupling of oil-paper materials should be considered when optimising the insulation structure of valve-side winding of the converter *** on the finite element multi-physical field coupling simulation,the multi-objective optimisation of main insulation structure of valve-side winding is carried *** view of the high time consuming of multi-physical field calculation and the actual needs of an insulation structure optimisation,the Kriging method and technique for order preference by similarity to the ideal solution(TOPSIS)method are introduced,and combines them with NSGA-II to obtain a joint algorithm that can be used for the optimisation of insulation structure of the converter *** using the joint algorithm of multi-objective optimisation,the insulation structure configuration scheme of valve-side winding is *** can be seen from the experiment result that,on the one hand,the joint algorithm adopted can obtain the insulation structure configuration scheme that meets the design *** the other hand,when facing the configuration scheme optimisation under multi-field coupling,the computational time required by this method is only 0.15%of that required by original genetic algorithm.

关键词： converter insulation coupling

Improved mass relations of mirror nuclei

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Nuclear Science and Techniques 2024年第9期35卷 178-185页

作者： cheng Xu Man Bao Department of Physics University of Shanghai for Science and TechnologyShanghai 200093China

In this study,we revisit the previous mass relations of mirror nuclei by considering 1/N-and 1/Z-dependent terms and the shell effect across a *** root-mean-squared deviation is 66 keV for 116 nuclei with neutron number N≥10,as com-pared with experimental data compiled in the AME2020 *** predicted mass excesses of 173 proton-rich nuclei,including 98 unknown nuclei,are tabulated in the Supplemental Material herein with competitive accuracy.

关键词： Nuclear mass Mirror nuclei Proton-rich nuclei