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A highly sensitive multiple-mode optical thermometer designed in Eu^(2+/3+)and Li^(+)co-doped polymorphism compound LaSc_(3)(BO_(3))_(4)

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Journal of Advanced Ceramics 2024年第6期13卷 821-833页

作者： Nan Yang Zhuo Li Tingxia Zhou Ziwang Zhang wen shi Yexiang Tong Jianxin shi School of Chemistry IGCMESun Yat-sen UniversityGuangzhou 510006China MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry IGCMEThe Key Lab of Low-Carbon Chemistry&Energy Conservation of Guangdong ProvinceSun Yat-sen UniversityGuangzhou 510006China

Noncontact optical thermometers have attracted widespread attention,but existing problems such as single-mode and low-sensitivity thermometers still urgently need to be ***,a novel multiple-mode thermometer was designed for the polymorphism LaSc_(3)(BO_(3))_(4):Eu^(2+/3+),Li^(+).X-ray diffraction(XRD)patterns revealed a slight transition betweenα-andβ-phases with the concentrations of the dopants,which is further proved by structure refinements and first-principles *** coexistence of Eu^(2+)and Eu^(3+)in the phosphors and their relative percentages were confirmed by X-ray absorption near-edge structure(XANES)*** from appropriate emissions from Eu^(2+)and Eu^(3+)without obvious energy transfer and their opposite changing trends with temperatures under 307 nm excitation,a triple-mode optical thermometer is obtained for this material within the temperature range of 150–450 *** highest sensitivities of 27.65,14.05,and 7.68%·K^(−1)are achieved based on two fluorescence intensity ratio(FIR)modes of Eu^(2+)and Eu^(3+)(5d–4f/^(5)D_(0)–^(7)F_(2,4))and the fluorescence lifetime(FL)mode of Eu^(2+),*** the best of our knowledge,the former is almost the highest in Eu^(2+)and Eu^(3+)co-doped *** results indicate that this material may be used as an excellent multiple-mode optical thermometer.

关键词： phase transition europium(Eu)ions multiple-mode optical thermometer thermal quenching properties fluorescence intensity ratio(FIR) fluorescence lifetime(FL)

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The Perturbation Bound of the Extended Vertical Linear Complementarity Problem

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Journal of the Operations Research Society of China 2024年第3期12卷 601-625页

作者： shi-Liang Wu wen Li He-Hui Wang School of Mathematics Yunnan Normal UniversityKunming650500YunnanChina School of Mathematical Sciences South China Normal UniversityGuangzhou510631GuangdongChina School of Mathematics and Statistics Yunnan UniversityKunming650091YunnanChina

In this paper,we discuss the perturbation analysis of the extended vertical linear complementarity problem(EVLCP).Under the assumption of the row W-property,we derive several absolute and relative perturbation bounds ... 详细信息

关键词： The extended vertical linear complementarity problem The row W-property The perturbation bound

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Non-Gaussian feature of the output field from a double qubit-cavity ultrastrong coupling system

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Communications in Theoretical Physics 2024年第7期76卷 30-36页

作者： Sheng-wen Xu shi-yu Dai Teng Zhao Center for Quantum Science and Technology Jiangxi Normal UniversityNanchang 330022China

We investigate the non-Gaussian feature of radiation in a circuit quantum electrodynamics(QED)system where two qubits are strongly coupled to a single-mode *** the regime of ultrastrong coupling(USC),the rotating-wave approximation is not valid,and the Rabi Hamiltonian contains counter-rotating wave terms,leading to level crossing and avoided crossings in the energy *** further analyze the intensity-amplitude correlation of the output field in these two novel *** the USC regime,the creation and annihilation operators in the correlation function are replaced,allowing for the identification of non-Gaussian features in the output *** findings reveal that despite the absence of squeezing effects in the output light,significant non-Gaussian characteristics are ***,we demonstrate that as the driving or coupling strength increases,the non-Gaussian features of the output field become more *** suggests that USC systems hold broad potential applications in the realms of nonlinear optics and the generation of non-Gaussian states.

关键词： ultrastrong coupling non-Gaussian intensity-amplitude correlation

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Counteracting effects on ENSO induced by ocean chlorophyll interannual variability and tropical instability wave-scale perturbations in the tropical Pacific

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Science China Earth Sciences 2024年第2期67卷 387-404页

作者： Rong-hua ZHANG Feng TIAN Qidong shi Xiujun WANG Tongwen WU School of Marine Sciences Nanjing University of Information Science and TechnologyNanjing210044China Laoshan Laboratory Qingdao266237China Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao266071China University of Chinese Academy of Sciences Beijing101408China Faculty of Geographical Sciences Beijing Normal UniversityBeijing100875China Earth System Modeling and Prediction Centre China Meteorological AdministrationBeijing100081China

Large perturbations in chlorophyll(Chl)are observed to coexist at interannual and tropical instability wave(TIW)scales in the tropical Pacific;at present,their combined effects on El Ni?o-Southern Oscillation(ENSO)through ocean biologyinduced heating(OBH)feedbacks are not understood ***,a hybrid coupled model(HCM)for the atmosphere and ocean physics-biogeochemistry(AOPB)in the tropical Pacific is adopted to quantify how ENSO can be modulated by Chl perturbations at interannual and TIW scales,individually or collectively,*** HCM-based sensitivity experiments demonstrate a counteracting effect on ENSO:the bio-climate feedback due to large-scale Chl interannual variability acts to damp ENSO through its impact on upper-ocean stratification and vertical mixing,whereas that due to TIW-scale Chl perturbations tends to amplify *** ENSO simulations are sensitively dependent on the ways Chl effects are represented at these different scales,it is necessary to adequately take into account these related differential Chl effects in climate modeling.A bias source for ENSO simulations is illustrated that is related with the Chl effects in the tropical Pacific,adding in a new insight into interactions between the climate system and ocean ecosystem on different scales in the *** results reveal a level of complexity of ENSO modulations resulting from Chl effects at interannual and TIW scales,which are associated with ocean biogeochemical processes and their interactions with physical processes in the tropical Pacific.

关键词： Ocean chlorophyll Bio-climate feedbacks Interannual variability Tropical instability waves Counteracting effects A hybrid coupled model

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Influence of rare earth oxides on microstructure and mechanical properties of nickel-based superalloys fabricated by high energy beam processing:A review

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Journal of Rare Earths 2024年第9期42卷 1629-1645,I0001页

作者： Lianjie Bi hua Yan Peilei Zhang Haichuan shi Zhiyuan Li Ruidi Li School of Materials Science and Engineering Shanghai University of Engineering ScienceShanghai201620China College of Agricultural Science and Engineering Hohai UniversityNanjing211100China Department of Mechanics and Maritime Science Chalmers University of TechnologyGothenburSE41296Sweden State Key Laboratory of Powder Metallurgy Central South UniversityChangsha410083China

In this paper,the effects of rare earth oxides on the micro structure and mechanical properties of nickelbased superalloys prepared by high-energy beam processing technology were critically *** focus is on the optimal amount of rare earth oxides that can produce ideal *** attention was paid to their main strengthening mechanisms,including solid solution strengthening mainly in the form of solid solution dissolved in the nickel-based alloy and improving the microstructure of the alloy by grain refinement or fine grain strengthening produced by homogenizing the distribution phase.Y_(2)O_(3),La_(2)O_(3) and CeO_(2) rare earth oxides can also improve the fluidity of the alloy molten pool and reduce the segregation of alloying *** advantages can significantly improve the mechanical properties of the ***,this paper outlines the future research directions of rare earth oxides,aiming to expand their application potential.

关键词： Rare earths High energy beam Nickel-based superalloys Microstructure Mechanical properties

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Cation-Dipole Interaction-Induced Coacervate Underwater Adhesives in Natural Seawater

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Chinese Journal of Polymer Science 2024年第7期42卷 984-991,I0009页

作者： Xu-Fei Liu Chong-Rui Zhang hua-wen Peng Qiang Zhao Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074China

Significant progress has been made in wet adhesives for low salinity water,but exploration of general ionic adhesives for natural seawater is less developed because the high salinity could weaken interfacial bonding and shields electrostatic interactions,resulting in adhesion ***,the design of adhesives for natural seawater represents challenges less ***,a cationic polyelectrolyte(PECHIA)containing imidazolacetonitrile unit was explored to prepare adhesives enabled by natural *** combining the ion shielding effect with the“cation-dipole”interactions between PECHIA chains,aqueous solution of the PECHIA underwent coacervation and self-crosslinking in natural seawater,allowing for underwater adhesion to various substrates in *** instantaneous lap-shear and tensile adhesion strengths are 47 and 119 kPa,respectively,while the cured adhesive shows~739 k Pa tensile adhesion in natural *** design of PECHIA enables wet adhesives viable for applications in the diversified scenarios of natural seawater.

关键词： Coacervate Underwater adhesives Seawater Cation-dipole interaction

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论启功的书法美学观

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南昌大学学报（人文社会科学版） 2009年第6期40卷 114-121页

作者：文师华南昌大学人文学院中文系江西南昌330031

启功先生在《论书绝句》及其自注、《论书随笔》、《论书札记》中论述了书法的"形质"和"神彩",他对笔法、墨法、笔画、结字、章法进行了深入浅出的分析,富有启发性,其中关于楷书结构中的"黄金律"是他的重大发现;在探讨入帖与出帖,书者... 详细信息

启功先生在《论书绝句》及其自注、《论书随笔》、《论书札记》中论述了书法的"形质"和"神彩",他对笔法、墨法、笔画、结字、章法进行了深入浅出的分析,富有启发性,其中关于楷书结构中的"黄金律"是他的重大发现;在探讨入帖与出帖,书者性格、品德、年龄、心态与书法作品之关系时,他结合自己的学书经验,提出了许多宝贵的见解;他崇尚天真自然之趣,赏爱碑帖中的优美文辞,认为书法审美中存在着主观随意性。

关键词：启功书法美学观黄金律天真自然

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论姜夔《续书谱》中的书法美学观

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南昌大学学报（人文社会科学版） 2011年第4期42卷 125-130,138页

作者：文师华南昌大学人文学院中文系江西南昌330031

姜夔《续书谱》是对孙过庭《书谱》的继承和发展,具有一定的独创性,在书法理论史上占有一席之地。其书法美学观点可归纳为四个方面:一是对楷、行、草三种书体特征的评析,崇尚魏、晋楷书的"飘逸之气",强调草书灵活多变的特性,最推崇王羲... 详细信息

姜夔《续书谱》是对孙过庭《书谱》的继承和发展,具有一定的独创性,在书法理论史上占有一席之地。其书法美学观点可归纳为四个方面:一是对楷、行、草三种书体特征的评析,崇尚魏、晋楷书的"飘逸之气",强调草书灵活多变的特性,最推崇王羲之的行书。二是对用笔、用墨等技法的见解,具体分析了执笔、运笔、笔画形态、笔势等,主张用墨要有变化,力避单调。三是阐述习字的途径,包括摹书、临书。四是推崇书法作品中的风神和书家的情性。

关键词：姜夔《续书谱》书体用笔用墨习字风神情性

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庐陵事业起夷陵——欧阳修贬官夷陵时期的思想状况和文学创作

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南昌大学学报（人文社会科学版） 2008年第2期39卷 120-125页

作者：文师华南昌大学人文学院中文系江西南昌330031

欧阳修贬官夷陵期间,表现出随遇而安的人生态度和仁政爱民的思想,提出了师经重道的主张,并首倡舍传从经的研究新风气。他所创作的诗赋,可分为咏物、赠友、纪游三类,形式上已初步形成了清新自然、平易疏放的特色。

关键词：欧阳修贬官随遇而安仁政爱民师经重道舍传从经艺术特色

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从《论书绝句百首》及其自注看启功对历代碑帖的评析

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南昌大学学报（人文社会科学版） 2007年第1期38卷 105-110,126页

作者：文师华南昌大学人文学院中文系江西南昌330031

启功先生在《论书绝句百首》及其自注中,对礼器碑、史晨碑、张猛龙碑、唐怀仁集王羲之圣教序、陆机平复帖、王伯远帖、智永千字文墨迹、颜真卿瀛州帖、杜牧张好好诗、万岁通天帖、冯承素摹本兰亭序、淳化阁帖、大观帖等历代碑帖给予了... 详细信息

启功先生在《论书绝句百首》及其自注中,对礼器碑、史晨碑、张猛龙碑、唐怀仁集王羲之圣教序、陆机平复帖、王伯远帖、智永千字文墨迹、颜真卿瀛州帖、杜牧张好好诗、万岁通天帖、冯承素摹本兰亭序、淳化阁帖、大观帖等历代碑帖给予了高度评价,提出了摩崖缺乏精刻,寻求汉隶笔法、刀法应从碑版入手,南北书派无鸿沟之判,观看六朝碑刻要善于“透过刀锋看笔锋”等许多有价值的观点,批判了明代祝允明等人盲目佞古的现象和清代阮元的南北书派论。

关键词：启功摩崖碑刻真迹摹本刻帖

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