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Recent advances in multifunctional shape memory photonic crystals and practical applications

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Nano Research 2024年第1期17卷 79-96页

作者： yong qi Shufen Zhang State Key Laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsDalian University of TechnologyDalian 116024China

Shape memory photonic crystals(SMPCs)are smart composite materials with changeable structural color integrated by shape memory polymer and photonic *** can produce one or more temporary shapes through nanoscale deformation,memorizing current *** can be recovered to their original shapes or some intermediate states under external stimuli,accompanied by the variation of structural *** porous carriers with built-in sensing properties,SMPCs promoted the interdisciplinary development of nanophotonic technology in materials science,environmental engineering,biomedicine,chemical engineering,and ***,the recent progress on multifunctional SMPCs and practical applications,including traditional and cold programmable SMPCs,is summarized and *** primary concern is shape programming at the nanoscale that has demonstrated numerous attractive functions,including smart sensing,ink-free printing,solvent detection,reprogrammable gradient wetting,and controllable bubble transportation,under variations of the surface *** aims to figure out the nanoscale shape memory effects on structural color conversion and additional performance,inspiring the fabrication of the next generation of ***,perspectives on future research directions and applications are also *** is believed that multifunctional SMPCs are powerful nanophotonic tools for the interdisciplinary development of numerous disciplines in the future.

关键词： photonic crystal shape memory structural color cold programmable shape recovery

基于代谢网络技术的杜仲治疗皮肤光老化的靶向研究

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中国美容医学 2017年第8期26卷 70-73页

作者：孙琪祁永华吴迪陈丹丹朴成玉石晨曦曹玲张宁黑龙江中医药大学佳木斯学院黑龙江佳木斯154007 黑龙江中医药大学第二临床医学院黑龙江哈尔滨150040 黑龙江中医药大学药物安全性评价中心黑龙江哈尔滨150040 黑龙江中医药大学药学院黑龙江哈尔滨150040

目的:利用代谢网络技术研究杜仲治疗大鼠皮肤光老化的作用机制和作用靶点。方法:采用经典的皮肤光老化动物模型制备方法,参考临床生化指标对所建立的模型进行评价,判定模型组大鼠皮肤老化程度,采用无歧视的代谢网络分析技术对大鼠的尿... 详细信息

目的:利用代谢网络技术研究杜仲治疗大鼠皮肤光老化的作用机制和作用靶点。方法:采用经典的皮肤光老化动物模型制备方法,参考临床生化指标对所建立的模型进行评价,判定模型组大鼠皮肤老化程度,采用无歧视的代谢网络分析技术对大鼠的尿液样本进行全局分析,聚焦关键代谢通路和作用靶点。结果:形态学考察发现其具有典型的皮肤光老化特征。皮肤组织的各项指标均显示模型组大鼠机体发生的显著地氧化受损过程,给予杜仲后出现一定回调趋势。尿液代谢轨迹分析发现杜仲具有显著回调皮肤光老化的作用。进一步聚焦分析发现皮肤光老化大鼠的代谢主要集中在花生四烯酸代谢和谷胱甘肽代谢通路,谷胱甘肽过氧化酶可能是其潜在的作用靶点。结论:杜仲对由紫外光照射诱导的皮肤光老化大鼠模型具有很好的回调作用,谷胱甘肽代谢是其涉及的核心代谢通路,谷胱甘肽过氧化酶为其潜在的作用靶点。

关键词：杜仲紫外光光老化代谢组学谷胱甘肽

Fine Structure in the Electron Emission Process for Two DX-Like Centers in Sn-Doped AlGaAs

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Chinese Physics Letters 1998年第1期15卷 60-61页

作者： ZHAN hua-han KANG Jun-yong huaNG qi-sheng Department of Physics Xiamen UniversityXiamen 361005

Fine structure in the electron emission process for DX(Sn)centers in AlGaAs has been studied with high resolution Laplace defect *** influence of the different local configuration of Al and Ga atoms around the centers on the electron thermal emissions was *** experimental evidence for the microscopic structure of two DX-like centers in Sn-doped AlGaAs is provided.

关键词： AlGaAs centers DX

Three-Dimensional Wave-Induced Current Model Equations and Radiation Stresses

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China Ocean Engineering 2017年第4期31卷 418-427页

作者： XIA hua-yong South China Sea Marine Forecast Center State Oceanic administrationGuangzhou 510300China

After the approach by Mellor （2003, 2008）, the present paper reports on a repeated effort to derive the equations for three-dimensional wave-induced current. Via the vertical momentum equation and a proper coordinate transformation, the phase-averaged wave dynamic pressure is well treated, and a continuous and depth-dependent radiation stress tensor, rather than the controversial delta Dirac function at the surface shown in Mellor （2008）, is provided. Besides, a phase-averaged vertical momentum flux over a sloping bottom is introduced. All the inconsistencies in Mellor （2003, 2008）, pointed out by Ardhuin et al. （2008） and Bennis and Ardhuin （2011）, are overcome in the presently revised equations. In a test case with a sloping sea bed, as shown in Ardhuin et al. （2008）, the wave-driving forces derived in the present equations are in good balance, and no spurious vertical circulation occurs outside the surf zone, indicating that Airy’s wave theory and the approach of Mellor （2003, 2008） are applicable for the derivation of the wave-induced current model.

关键词： sea surface wave wave-induced current radiation stress vertical wave momentum flux

电化学指纹图谱法测定复方中药祛痘软膏剂含量

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黑龙江医药科学 2015年第2期38卷 64-65页

作者：祁永华吴迪刘丽张玲方丹彭玉生李守君佳木斯大学药学院黑龙江佳木斯154007 黑龙江中医药大学佳木斯学院黑龙江佳木斯154007

目的：建立一种应用电化学指纹图谱技术测定复方中药祛痘软膏剂含量的方法。方法：采用电化学指纹图谱技术,以诱导时间为评价指标,对复方中药祛痘软膏剂含量进行测定。结果：中药浸膏粉检测范围6~34mg/m L,回归方程：t=6898-183.5c,R=0.... 详细信息

目的：建立一种应用电化学指纹图谱技术测定复方中药祛痘软膏剂含量的方法。方法：采用电化学指纹图谱技术,以诱导时间为评价指标,对复方中药祛痘软膏剂含量进行测定。结果：中药浸膏粉检测范围6~34mg/m L,回归方程：t=6898-183.5c,R=0.9970,日内RSD为1.07%,日间RSD为1.68%,加样回收率RSD〈1%,三批样品含量（相当标示量）在98.6%~101.4%,符合要求。结论：通过方法学考察,建立一种有效、便捷、可靠、准确地评价中药软膏剂的方法。

关键词：电化学指纹图谱复方中药祛痘软膏苦参黄芩芦荟

Application of calcium alumino-titanate to taphole clay

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Journal of Iron and Steel Research International 2022年第7期29卷 1089-1100页

作者： Mao-qi Ju Man-fei Cai yong-he Liang Jian-hua Nie Meng-zhen Guo The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina

Calcium alumino-titanate(CAT)can be used as a raw material owing to its excellent refractoriness and thermal ***-containing taphole clay(THC)with different particle sizes was prepared and *** results indicated that THC with CAT aggregate has better thermo-mechanical performance than that with a fine CAT powder because of different sintering *** CAT aggregate and SiO_(2)reacted and formed liquid phase covering their surface,enhancing the bonding of the particle–matrix and promoting the internal transformation of the ***,the mullite was formed in aggregate with the interwoven network *** CAT powder has a higher specific surface area,and its surface energy decreases with the particle *** could cause a reaction between CAT and SiO_(2)at relatively low temperature,making it unable to form a core–shell structure similar to that of the aggregate,with the excessive liquid phase affecting the performance of the ***,the liquid phase was formed to close the pores and cover the SiC surface,and this was found to enhance the oxidation resistance.A corrosion test confirmed that the THC refractories with CAT aggregates showed better corrosion resistance than other *** electron microscopy and energy-dispersive spectrometry results indicated that Ti(C,N)transformed by TiO_(2)in CAT was deposited at the interface between the molten slag and the refractory,and it efficiently prevented the penetration and reaction owing to its high melting point and small wetting angle with the slag.

关键词： Taphole clay Calcium alumino-titanate Microstructure Corrosion resistance

Ligustrazine inhibits high voltage-gated Ca^(2+) and TTX-resistant Na^+ channels of primary sensory neuron and thermal nociception in the rat:a study on peripheral mechanism

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Neuroscience Bulletin 2006年第2期22卷 79-84页

作者： Bi-hua BIE yong CHEN Zhi-qi ZHAO Institute of Shanghai Physiology Chinese Academy of Sciences Shanghai 200031 China Institute of Neurobiology Fu-Dan University Shanghai 200433 China

Objective Ligustrazine, also named as tetramethylpyrazine, is a compound purified from Ligusticum chuanxiong hort and has ever been testified to be a calcium antagonist. The present investigation was to determine the antinociceptive effect of ligustrazine and, if any, the peripheral ionic mechanism involved. Methods Paw withdrawal Latency （PWL） to noxious heating was measured in vivo and whole-cell patch recording was performed on small dorsal root ganglion （DRG） neurons. Results Intraplantar injection of ligustrazine （0.5 mg in 25 μl） significantly prolonged the withdrawal latency of ipsilateral hindpaw to noxious heating in the rat. Ligustrazine not only reversibly inhibited high-voltage gated calcium current of dorsal root ganglion （DRG） neuron in dose-dependent manner with IC50 of 1.89 mmol/L, but also decreased tetrodotoxin （TTX） -resistant sodium current in relatively selective and dose-dependent manner with IC50 of 2.49 mmol/L. Conclusion The results suggested that ligustrazine could elevate the threshold of thermal nociception through inhibiting the high-voltage gated calcium current and TTX-resistant sodium current of DRG neuron .in the rat.

关键词： ligustrazine nociception dorsal root ganglion sodium channel calcium channel

Trajectory optimization of a deflectable nose missile

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Defence Technology（防务技术） 2017年第3期13卷 158-163页

作者： Zhi-yong Zhang qi-zhong Tang Xiao-hui Sun Zhi-hua Chen National Key Laboratory of Transient Physics Nanjing University of Science and Technology North China System Engineering Institute

The deflectable nose missile has a longer range by deflecting its nose to improve its aerodynamic *** on detached eddy simulation(DES), the supersonic flow fields of a missile with deflectable nose are simulated numerically and its aerodynamic force coefficients are calculated under the condition of the deflection angles vary from 0° to 8°, angles of attack, 0°-8°, and mach numbers, 2 to 5. Coupling these aerodynamic coefficients with the plumb plane ballistic equations, the extended flight range has been calculated. Furthermore, the genetic algorithm(GA) is employed for the solution of maximum range of the deflected missile.

关键词：偏转角度导弹弹道优化弹头流场数值模拟最大射程动力学特征气动力系数

An experimental study on seepage behavior of sandstone material with different gas pressures

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Acta Mechanica Sinica 2015年第6期31卷 837-844页

作者： Sheng-qi Yang Yan-hua huang Yu-yong Jiao Wei Zeng qing-Lei Yu State Key Laboratory for Geomechanics and Deep Underground Engineering School of Mechanics and Civil Engineering China University of Mining and Technology Institute of Rock and Soil Mechanics Chinese Academy of Sciences School of Resource and Civil Engineering Northeastern University

The seepage evolution characteristic of brittle rock materials is very significant for the stability and safety of rock engineering. In this research, a series of conventional triaxial compression and gas seepage tests were carded out on sandstone specimens with a rock mechanics servo-controlled testing system. Based on the experimental results, the relationship between permeability and deformation is firstly analyzed in detail. The results show that the permeabilityaxial strain curve can be divided into the following five phases： the phase of micro-defects closure, the phase of linear elastic deformation, the phase of nonlinear deformation, the phase of post-peak stress softening and the phase of residual strength. The seepage evolution characteristic is also closely correlated with the volumetric deformation according to the relationship between permeability and volumetric strain. It is found that the gas seepage pressure has a great effect on the permeability evolution, i.e. permeability coefficients increase with increasing gas seepage pressures. Finally, the influence of gas seepage pressures on the failure behavior of brittle sandstone specimens is discussed.

关键词： Rock mechanics · Sandstone · Gas seepage ·Volumetric deformation · Permeability