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Experimental Study on a Multi-Evaporator Loop Heat Pipe with a Dual-Layer Structure Condenser

Journal of Thermal Science 2023年第4期32卷 1466-1476页

作者： LU Depu xie Rongjian wen Jiajia School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240China Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai200083China

A loop heat pipe(LHP)is a kind of passive heat transfer device that uses the latent heat of the working fluid and the capillary forces of the capillary *** demonstrates high heat transfer efficiency,long-distance heat transfer,and high pipeline *** multi-evaporator loop heat pipe(MeLHP)is a special loop heat pipe with multiple evaporators so that heat collection and emission from multiple heat sources can be *** this paper,a new type of the multi-evaporator loop heat pipe prototype with a dual-layer condenser was designed,which can ensure the uniform and symmetrical layout of *** working temperature was 20℃,and propylene was used as the working *** performance of the same evaporator in a single-loop LHP was considered as a *** experiment was conducted under two heating modes,***-evaporator heating and multi-evaporator heating,and the working stability of the prototype was verified by applying periodic heating power change and adverse elevation *** was observed that the prototype can be successfully started in different heating modes with a heat transfer limit of 230 *** the test,the four loops were different in heat transfer limit due to the differences of flow resistance,and less power distribution to the loop with lowest heat transfer limit was considered to be beneficial to the prototype’s ***,the prototype showed good heat sharing characteristic as the maximum temperature difference is low(smaller than 2 K in single-evaporator heating mode and 0.5 K in multi-evaporator heating mode).The prototype was of good operational reliability and found to be adaptable to the adverse elevation and cyclic variation of the heating power to a certain extent.

关键词： multi-evaporator loop heat pipe dual-layer condenser heat sharing characteristic propylene variable heating power adverse elevation

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Negative Trions Trapped by a Spherical Parabolic Quantum Dot

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Communications in Theoretical Physics 2006年第3期45卷 565-567页

作者： xie wen-Fang Department of Physics Guangzhou University Guangzhou 510405 China

In this paper, a negatively charged exciton trapped by a spherical parabolic quantum dot has been investigated. The energy spectra of low-lying states are calculated by means of matrix diagonalization. The important feature of the low-lying states of the negatively charged excitons in a spherical quantum dot is obtained via an analysis of the energy spectra.

关键词： trion quantum dot

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丹参转录因子及相关调控蛋白研究进展

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中国中药杂志 2025年第1期50卷 58-70页

作者：徐文田梅申业郭娟靳保龙崔光红中国中医科学院中药资源中心道地药材品质保障与资源持续利用全国重点实验室北京100700

丹参Salvia miltiorrhiza为唇形科鼠尾草属植物,为最早进行分子生物学研究的药用植物之一,并逐渐成为药用植物分子生物学研究的模式植物。随着丹参基因组及其主要活性成分丹参酮、丹酚酸类化合物生物合成途径的逐步解析,由转录因子及相... 详细信息

丹参Salvia miltiorrhiza为唇形科鼠尾草属植物,为最早进行分子生物学研究的药用植物之一,并逐渐成为药用植物分子生物学研究的模式植物。随着丹参基因组及其主要活性成分丹参酮、丹酚酸类化合物生物合成途径的逐步解析,由转录因子及相关调控蛋白介导的转录调控研究逐步成为新的热点。由于不同文献对转录因子缺乏科学一致的命名,研究指标各不相同等问题,该文使用自交3代紫花丹参DSS3和自交6代白花丹参bh2-7的基因组作为参考,对不同文献中的转录因子进行了系统的整理,确定了来源于13个基因家族,共计73个丹参转录因子及相关调控蛋白的功能。同时也对相关基因过表达或基因沉默实验后对丹参酮和丹酚酸类成分的影响进行了统计。这些工作从源头统一了已鉴定的转录因子,为后续深入开展丹参中次生代谢产物及抗虫、抗逆等调控网络的构建和利用全局转录调控工程提高药材品质研究奠定了基础。

关键词：丹参转录因子调控蛋白

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Singlet-Triplet Transitions of a Poeschl-Teller Quantum Dot

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Communications in Theoretical Physics 2006年第6X期46卷 1101-1104页

作者： xie wen-Fang Department of Physics Guangzhou University Guangzhou 510006 China

We study the energy spectra of a two-dimensional two-electron quantum dot （QD） with P6schl-Tefler confining potential under the influence of perpendicular homogeneous magnetic field. Calculations are made by using the method of numerical diagonalization of Hamiltonian matrix within the effectlve-mass approximation. A ground-state behavior （spin singlet-triplet transitions） as a function of the strength of a magnetic field is found. We find that the dot radius R of a Poeschl-Teller potential is important for the ground-state transition and the feature of ground-state for a Poeschl Teller QD and a parabolic QD is similar when R is larger. The larger the well depth, the higher the magnetic field for the singlet-triplet transition of the ground-state of two interacting electrons in a Poesehl-Teller QD.

关键词： electron-electron interaction quantum dot semiconductor

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Three Charged Bosons Confined in a Harmonic Trap

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Communications in Theoretical Physics 2005年第3X期44卷 529-531页

作者： xie wen-Fang Department of Physics Guangzhou University Guangzhou 510405 China

A system of three charged bosons confined in a harmonic trap has been investigated by an exact diagonalization. We report a calculation for the energy spectrum of the low-lying states of a system of three charged *** important feature of the low-lying states of three charged bosons in a harmonic trap is obtained via an analysis of the energy spectrum.

关键词： boson energy spectrum

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Feature of a Confined Positronium Negative Ion by a Spherical Parabolic Potential

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Communications in Theoretical Physics 2007年第3期47卷 547-549页

作者： xie wen-Fang Department of Physics Guangzhou University Guangzhou 510006 China

The ground and three low-excited states of the positronium negative ion Confined by a spherical harmonic oscillator potential are studied employing the adiabatic hyperspherical approach method. Total energies are obtained as a function of the confined potential radii. We find that the confinement may cause accidental degeneracies between levels with different low-excited states and the inversion of the energy wlues.

关键词： positronium negative ion energy spectrum

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Linear and Nonlinear Optical Absorptions of a Hydrogenic Donor in a Quantum Dot Under a Magnetic Field

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Communications in Theoretical Physics 2009年第5期51卷 923-926页

作者： xie wen-Fang School of Physics and Electronic Engineering Guangzhou University Guangzhou 510006 China

The linear and nonlinear optical properties of a hydrogenic donor in a disc-like parabolic quantum dot in the presence of an external magnetic field are studied. The calculations were performed within the effective mass approximation, using the matrix diagonalization method and the compact density-matrix approach. The linear and nonlinear optical absorption coefficients between the ground （L =0） and the first excited state （L = 1） have been examined based on the computed energies and wave functions. We find that the linear, nonlinear third-order, and total optical absorption coefficients are strongly affected by the confinement strength of QDs, the external magnetic field, and the incident optical intensity.

关键词： quantum dot nonlinear optics

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在跆拳道教学中加入“大带小”活动对儿童心理韧性的提升研究

引用

武术研究 2025年第1期10卷 113-115页

作者：张娇谢娟沈阳中国儿童中心兴趣培养部北京100035 北京体育大学教育学院北京100084

跆拳道动作简洁快速,观赏性极佳,且学习周期较短,易于掌握。跆拳道教学不仅重视技术训练,同时也重视对忍耐、谦逊以及坚忍不拔等品质的培养,因此,越来越多的儿童开始学习跆拳道。通过研究发现,跆拳道运动对6—8岁儿童的心理韧性培养也... 详细信息

跆拳道动作简洁快速,观赏性极佳,且学习周期较短,易于掌握。跆拳道教学不仅重视技术训练,同时也重视对忍耐、谦逊以及坚忍不拔等品质的培养,因此,越来越多的儿童开始学习跆拳道。通过研究发现,跆拳道运动对6—8岁儿童的心理韧性培养也起到了一定作用,并且在儿童跆拳道训练中加入“大带小”活动,能更好地提升6—8岁儿童的心理韧性。

关键词：跆拳道 “大带小” 心理韧性 6—8岁儿童

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Ground State Transitions of Four-Electron Quantum Dots in Zero Magnetic Field

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Communications in Theoretical Physics 2008年第3期49卷 763-766页

作者： xie wen-Fang Department of Physics Guangzhou University Guangzhou 510006 China

In this paper, we study four electrons confined in a parabolic quantum dot in the absence of magnetic field, by the exact diagonalization method. The ground-state electronic structures and orbital and spin angular momenta transitions as a function of the confined strength are investigated. We find that the confinement may cause accidental degeneracies between levels with different low-lying states and the inversion of the energy values. The present results are useful to understand the optical properties and internal electron-electron correlations of quantum dot materials.

关键词： electron-electron interaction quantum dot semiconductor

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Donor Centers in a Gaussian Potential

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Communications in Theoretical Physics 2007年第1期47卷 167-170页

作者： xie wen-Fang Department of Physics Guangzhou University Guangzhou 510006 China

We study a neutral donor center （D^0） and a negatively charged donor center （D^-） trapped by a quantum dot, which is subjected to a Gaussian potential confinement. Calculations are made by using the method of numerical diagonalization of Hamiltonian within the effective-mass approximation. The dependence of the ground state of the neutral shallow donor and the negatively charged donor on the dot size and the potential depth is investigated. The same calculations performed with the parabolic approximation of the Gaussian potential lead to the results that are qualitatively and quantitatively different from each other.

关键词： donor quantum dots

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