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Wave packet solutions in a bounded equatorial ocean and its interannual and decadal variabilities

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Acta Oceanologica Sinica 2019年第3期38卷 45-59页

作者： dongling Zhang Juan Zhu xu Lu Ming Zhang Institute of Atmospheric Physics Chinese Academy of Sciences Special Office of Marine Environment National Marine Environment Forecasting Center Ministry of Natural Resources Atmospheric Circulation and Short-term Climate Prediction Laboratory of Meteorology and Marine Institute National University of Defense Technology 32021 Troop People's Liberation Army

Linearized shallow water perturbation equations with approximation in an equatorial β plane are used to obtain the analytical solution of wave packet anomalies in the upper bounded equatorial ocean. The main results are as follows. The wave packet is a superposition of eastward travelling Kelvin waves and westward travelling Rossby waves with the slowest speed, and satisfies the boundary conditions of eastern and western coasts, *** decay coefficient of this solution to the north and south sides of the equator is inversely proportional only to the phase velocity of Kelvin waves in the upper water. The oscillation frequency of the wave packet, which is also the natural frequency of the ocean, is proportional to its mode number and the phase velocity of Kelvin waves and is inversely proportional to the length of the equatorial ocean in the east-west direction. The flow anomalies of the wave packet of Mode 1 most of the time appear as zonal flows with the same direction. They reach the maximum at the center of the equatorial ocean and decay rapidly away from the equator, manifested as equatorially trapped waves. The flow anomalies of the wave packet of Mode 2 appear as the zonal flows with the same direction most of the time in half of the ocean, and are always 0 at the center of the entire ocean which indicates stagnation, while decaying away from the equator with the same speed as that of Mode 1. The spatial structure and oscillation period of the wave packet solution of Mode 1 and Mode 2 are consistent with the changing periods of the surface spatial field and time coefficient of the first and second modes of complex empirical orthogonal function(EOF)analysis of flow anomalies in the actual equatorial ocean. This indicates that the solution does exist in the real ocean, and that El Ni?o-Southern Oscillation(ENSO) and Indian Ocean dipole(IOD) are both related to Mode *** considering the Indonesian throughflow, we can obtain the length of bounded equa

关键词： bounded equatorial ocean wave packet solutions decadal variability Kelvin wave Rossby wave

“1+X”证书制度下“装配式混凝土结构施工”课程教改研究

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河南水利与南水北调 2024年第1期53卷 63-64页

作者：徐峰张东岭王玉振河南水利与环境职业学院河南郑州450008

国家现阶段职业教育积极推行“1+X”证书制度。装配式施工技术是应国家大力发展装配式建筑而新兴的知识体系,在知识体系的架构和实施中深度贯彻“1+X”制度,有利于提高专业化人才的培养质量。本文研究了,“1+X”证书制度在装配式混凝土... 详细信息

国家现阶段职业教育积极推行“1+X”证书制度。装配式施工技术是应国家大力发展装配式建筑而新兴的知识体系,在知识体系的架构和实施中深度贯彻“1+X”制度,有利于提高专业化人才的培养质量。本文研究了,“1+X”证书制度在装配式混凝土结构施工课程教学中的试点运行,从而总结出课程实施“1+X”证书制度具有工种针对性性强、课程培训指导性强等优势,并且在课程标准、教学模式、教师队伍、信息技术、产教融合等方面的教学改革有着积极的推动作用。

关键词： 1+X 教学改革装配式混凝土结构施工

A fluorescent probe based on a spiropyran for sensitive detection of Ce^3+ ion

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Journal of Rare Earths 2020年第4期38卷 445-450页

作者： Xin Luo dongling Chen Zhenxiang xu Yanxi Song Hongqi Li Chunying Xian Key Laboratory of Science&Technology of Eco-Textile Ministry of EducationCollege of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China Weifang Institute of Test and Measurement Weifang 261000China Penglai Xinguang Pigment Chemical Co. Ltd.Penglai 265600China School of Environmental Science and Engineering Donghua UniversityShanghai 201620China

A spiropyran-based probe was *** serves as a fluorescence turn-on probe for selective detection of Ce^3+in both ethanol and aqueous(water/ethanol,1:9 or 9:1,v/v)***3+can induce photochromism of the probe though the probe exhibits negligible photochromic property by *** probe is sensitive to Ce3+and the detection limit reaches 1.7μmol/*** exhibits a high selectivity for Ce^3+ion over other common metal cations including Li^+,Na^+,Ag^+,Sr^2+,Ni^2+,Co^2+,Hg^2+,Zn^2+,Cr^3+,Al^3+,Fe^3+and Bi^3+and lanthanide ions Nd^3+,Yb^3+and La^3+.The probe may be used for quantitative determination of the concentration of Ce3+ion in a range of 1-10μmol/L and for application to environmental water *** mechanism of the probe towards Ce3+ion is proposed.

关键词： Spiropyran Probe Cerium(Ⅲ)ion Fluorescent Rare earths

Thermoelastic Structural Topology Optimization Based on Moving Morphable Components Framework

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Computer Modeling in Engineering & Sciences 2021年第9期128卷 1179-1196页

作者： Jun Yan Qi xu Zhirui Fan Zunyi Duan Hongze Du dongling Geng Department of EngineeringMechanics StateKey Laboratory of StructuralAnalysis for Industrial EquipmentInternational Research Center for Computational MechanicsDalian University of TechnologyDalian116024China Institute of Structural Health Monitoring and Control School of MechanicsCivil Engineering&ArchitectureNorthwestern Polytechnical UniversityXi’an710072China Ningbo Research Institute of Dalian University of Technology Ningbo315016China

This study investigates structural topology optimization of thermoelastic structures considering two kinds of objectives ofminimumstructural compliance and elastic strain energy with a specified available volume *** explicitly express the configuration evolution in the structural topology optimization under combination of mechanical and thermal load conditions,the moving morphable components(MMC)framework is *** on the characteristics of the MMC framework,the number of design variables can be reduced *** optimization formulation in the MMC topology optimization framework and numerical solution procedures are developed for several numerical *** optimization results are obtained with structural compliance and elastic strain energy as objectives,respectively,for thermoelastic *** effectiveness of the proposed optimization formulation is validated by the numerical *** is revealed that for the optimization design of the thermoelastic structural strength,the objective function with the minimum structural strain energy can achieve a better performance than that from structural compliance design.

关键词： Thermoelastic structure topology optimization moving morphable components minimum structural compliance minimum strain energy

Influence of Nozzle Orifice Shape on the Atomization Process of Si3N4 in a Dry Granulation Process

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Fluid Dynamics & Materials Processing 2021年第3期17卷 569-586页

作者： dongling Yu Huiling Zhang xu Zeng Dahai Liao Nanxing Wu School of Mechanical and Electronic Engineering Jingdezhen Ceramic InstituteJingdezhen333403China National Engineering Research Center for Domestic&Building Ceramics Jingdezhen333001China

In order to reveal the intrinsic fluid-dynamic mechanisms of a pressure-swirl nozzle used for Si3N4 dry granulation,and effectively predict its external spray characteristics,the dynamics of air-atomized liquid two-phase flow is analyzed using a VOF(Volume of Fraction)method together with the modified realizable k-εturbulence *** influence of nozzle orifice shape on velocity distribution,pressure distribution is *** results show that the pressure difference in a convergent conical nozzle is the largest with a hollow air core being formed in the *** corresponding velocity of atomized liquid at nozzle orifice is the *** a self-designed atomization experiment platform,the velocity and pressure of atomized liquid and the spray cone angle are measured for three nozzles with different orifice *** micro-morphology of Si3N4 particles is also deter*** data confirm the correctness of numerical *** atomization performance of the nozzle,the contraction conical nozzle is more suitable for the atomization of Si3N4 in practical production based on the dry granulation approach.

关键词： Si_(3)N_(4)dry granulation pressure-swirl nozzle VOF method nozzle orifice shape

Activities of autonomic neurotransmitters in meibomian gland tissues are associated with menopausal dry eye

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Neural Regeneration Research 2012年第35期7卷 2761-2769页

作者： Lianxiang Li dongling Jin Jinsheng Gao Liguang Wang Xianjun Liu Jingzhang Wang Zhongxin xu Department of Anatomy Histology and Embryology Laboratory of Basic Medicine Medical College Hebei University of Engineering Department of Pathology Medical College Hebei University of Engineering Department of Physiology Medical College Hebei University of Engineering Department of Biochemistry Medical College Hebei University of Engineering

The secretory activities of meibomian glands are regulated by the autonomic nervous system, The change in density and activity of autonomic nerves in meibomian glands during menopause play an important role in the pathogenesis of dry eye. In view of this, we established a dry eye rat model by removing the bilateral ovaries. We used neuropeptide Y and vasoactive intestinal polypeptide as markers of autonomic neurotransmitters. Our results showed that the concentration of estradiol in serum significantly decreased, the density of neuropeptide Y immunoreactivity in nerve fibers significantly increased, the density of vasoactive intestinal polypeptide immunoreactivity in nerve fibers significantly decreased, and the ratio of vasoactive intestinal polypeptide/neuropeptide Y positive staining significantly decreased. These results suggest that a decrease in ovary activity may lead to autonomic nervous system dysfunction, thereby affecting the secretory activity of the meibomian gland, which participates in sexual hormone imbalance-induced dry eye.

关键词： ovariectomy meibomian gland meibomian gland dysfunction neuropeptide Y vasoactive intestinalpolypeptide autonomic nervous system dysfunction dry eye sexual hormone rats autonomicnerve neural regeneration

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低温对血液分析仪血小板计数的影响

江西医学检验 2000年第3期18卷 140-141页

作者：刘忠伦许东琳楚建军赵绍林鲍华何浩明江苏省连云港市第一人民医院 222002

探讨低温对血液分析仪血小板计数的影响.方法在10℃、25℃以血液分析仪进行血小板计数,观察计数结果及直方图,同时,以手工方法计数血小板,进行对比分析.结果10℃时血小板计数结果仪器法显著低于手工法(P＜0．01),血小板直方图异常；25... 详细信息

探讨低温对血液分析仪血小板计数的影响.方法在10℃、25℃以血液分析仪进行血小板计数,观察计数结果及直方图,同时,以手工方法计数血小板,进行对比分析.结果10℃时血小板计数结果仪器法显著低于手工法(P＜0．01),血小板直方图异常；25℃时仪器法计数结果与手工法一致(P＞0．05),显示正常的血小板直方图；MPV10℃时值显著大于25℃时(P＜0．01).结论低温使血小板聚集而导致血液分析仪血小板计数结果显著偏低；观察血小板直方图及MPV参数,有利于对血液分析结果的可靠性作出判断.

关键词：血液分析仪血小板直方图血小板计数低温

Effects of Arg26 and Lys27 mutation on the bioactivity of HNTX-Ⅳ

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Frontiers in Biology 2007年第1期2卷 75-79页

作者： XIONG Xia xu Xia LI dongling CHEN Ping LIANG Songping College of Life Sciences Hunan Normal UniversityChangsha 410081China

Hainantoxin-Ⅳ(HNTX-Ⅳ)was isolated from the Chinese bird spider Ornithoctorcs hainana and identified as a novel antagonist of tetrodotoxin-sensitive(TTX-S)sodium *** revealed by the solution structure of HNTX-Ⅳ solved by two-dimensional nuclear magnetic resonance(2D-NMR),HNTX-Ⅳ adopts an inhibitor cystine knot *** check the role of basic residues during HNTX-Ⅳ’s interaction with TTX-S sodium channels,R26A and K27A mutants of HNTX-Ⅳ were constructed by solid-phase chemical *** synthesized peptides were purified and refolded under optimized oxidation *** synthesis and folding were confirmed by MALDI-TOF mass spectrometry and NMR spectroscopy,*** the whole-cell patch-clamp technique,Lys27 but not Arg26 was identified as a key residue for HNTX-Ⅳ’s bioactivity against TTX-S sodium channels,because R26A-HNTX-Ⅳ showed slightly reduced activity and K27A-HNTX-Ⅳ showed almost no inhibition.

关键词： Hainantoxin-Ⅳ mutant solid-phase synthesis bioactivity

Recent advancements in plasmon-enhanced visible light-driven water splitting

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Journal of Materiomics 2017年第1期3卷 33-50页

作者： Qingzhe Zhang Deepak Thrithamarassery Gangadharan Yanlong Liu Zhenhe xu Mohamed Chaker dongling Ma Institut National de la Recherche Scientifique(INRS) CentreÉnergie Materiaux et TélécommunicationsUniversitédu Québec1650 Boulevard Lionel-BouletVarennesQuébecJ3X 1S2Canada The Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province College of Applied ChemistryShenyang University of Chemical TechnologyShenyang110142China

Recently,the combination of plasmonic noble metallic nanostructures with semiconductors for plasmonenhanced visible light-driven water splitting(WS)has attracted considerable *** review first presents three prime enhancement mechanisms for plasmon-enhanced photocatalytic WS,and then some state-of-the-art representative studies are introduced according to different enhancement ***,the design parameters of plasmonic-metal/semiconductor photocatalysts are discussed in detail,focusing on the effect of shape,size and geometric position of metallic nanostructures on the photocatalytic activity of visible light-driven ***,the challenges and perspectives for plasmon-enhanced solar WS are proposed.

关键词： Surface plasmon resonance Water splitting Visible light photocatalysis