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The knowledge of the hyperpolarizabilities of atoms and ions is helpful for the analysis of the high order effects of th......
Review of ultrafast spectroscopy studies of valley carrier dynamics in two-dimensional semiconductin
The two-dimensional layered transition metal dichalcogenides provide new opportunities in future valley-based informatio......
Structure and luminescent properties of luminous polypropylene fiber based on Sr_2MgSi_2O_7:Eu~(2+),
The luminous polypropylene fiber based on long afterglow luminescent material Sr2MgSi2O7:Eu2+,Dy3+ was prepared by melt-......
This is my new pen pal.Her name is Annie.She is14years old.Her birthday is in August.She is from China.What does she loo......
Zeolites as host matrix for luminescent carbon dots:a new class of thermally activated delayed fluor
Organic light-emitting diodes(OLEDs)have attracted considerable attentions from both academia and industry for decades b......
Ce3+, Yb3+ co-doped Y3Al5O12 films were prepared by pulse laser deposition. X-ray diffraction, X-ray photoelectron spect......
Preparation and characteristics of ZnO films with preferential nonpolar plane orientation on polar s
The properties of ZnO thin film on sapphire (0001) substrate fabricated by single source chemical vapour deposition (SSC......
An oscillator with dry friction under external excitation is considered.The Poincaré map can be established according t......
In this work, the synthesis and photoluminescence characteristics of two new phosphors Pr3+: CaYAlO4(CYA) and Pr3+/Tb3+:......
Dy3+/Eu3+ co-doped cubic lattice Na YF4 single crystal with high quality in the size of ~Φ1.0 cm×10.0 cm was grown by ......
The absorption coefficient measurement of underwater materials in a water tube by using the wide-ban
The existing absorption coefficient measurement in a water tube is limited in low frequency due to the limitation of the......
Preparation and upconversion luminescence cell imaging of O-carboxymethyl chitosan-functionalized Na
Upconversion luminescence nanoparticles(UCNPs)have shown promising applications in biomedical fields as luminescent prob......
At the18th World Congress of Neurology,5-12November2005in Sydney,Australia,Evidence-based Neurology was a hot topic,at-t......
Application value of CT perfusion imaging with acetazolamide challenge test in the diagnosis of chro
阜阳市局 ￡4a 局长——_MINtkMMtgj’＃lnH＄B——q.M——D收束志不他只邀狲位J则【科校为先导推动地租工作.B为广为戳民U用凶盼引眯B.......
The title complex,C<sub>55</sub>H<sub>41</sub>O<sub>6</sub>N<sub>2</sub>Eu,M<sub>r</sub>=979.91,crystallizes in the mono......
Traditional Chinese medicine(TCM)has thousandsyears of history in using herbal formulae(Fang-Ji in Chinese)that consist ......
The stretching vibrational spectra of H2S have been calculated by using the algebraic model, and the local mode charact......
Characterization of transient species in laser photolysis of aromatic amino acids using acetone as p
The photochemical processes of aromatic amino acids were investigated in aqueous solution using acetone as photosensiti......
A group of fluorescence chemosensor with pyrene, compounds (Ⅰ), (Ⅱ) and (Ⅲ), were synthesized The fluorescence spect......
Eu3+ was doped host CaO-B2O3-CaCl2 (CBC). A series of fluorescent materials were gained by hydrothermal method and high ......
Experimental investigations on the dis-sociation and ionization processes of NO2 in intensefields at wavelengths of 810,......
Potential energy curves for the X~1Σ_g~+, B~1△_g and B′~1Σ_g~+ states of C_2 using MRCI and approxim
The potential energy curves for the X1Σ g+, B1△g and B′1Σ g+ states of C2 have been studied by using MRC and approxi......
DVA (dynamic vibration absorber) is good for restrain of the resonance vibration in low frequency, especially under the ......
The Au isotopes,located at the A~190 transitional region,have been the focus of experimental and theoretical investigati......
An analysis of selected fission fragment angular distributions of various target is made using exact theoretical express......
The shell effects on the particle evaporation prior to fission for three Pb isotopes,~204Pb,~208Pb, and ~212Pb,as well ......
Based on calculating the influence of RF-field with various physical parameters on the dynamics of the spin 1/2 system,i......
For the n+235U fission reaction, the total excitation energy partition of the fission fragments, the average neutron kin......
Mixed dimensional van der Waals (vdW) heterostructures constructed by one-dimensional (1 D) and two-dimensional (2D) mat......
励磁系统作为发电厂重要组成部分之一,其运行的可靠性直接影响着发电机组的安全运行,针对ABB Unitrol 5000励磁系统运行中出现的一......
从发电机励磁、调速控制方式入手,在分析了传统综合控制器特点之后,给出了运用非线性逆系统方法实现发电机综合控制的方法,并进行......
同步发电机励磁系统是一个具有时变性、多时滞环节以及高度非线性的复杂控制系统,其运行是否可靠直接影响到整个电力系统运行的稳......
低温停循环(HCA)存在时间限制问题,超过45～60 min的停循环会使术后神经系统并发症增高,最易受影响的是脑的高级智力功能.这是由神经......
异步电动机的无功需求与其所带负载时的工作状态有很大关系。通过分析异步电动机从空载到稳定负载时励磁电流的变化,反映出电动机......
为了对新型光敏剂竹红菌甲素（HA）进行改性并保持其优异的敏化特性,系统研究了HA在酸性体系下改性后的光谱特性,为指认HA的光谱和激发......
简要介绍2号机励磁系统改造前、后的运行情况，并通过介绍新励磁系统一些常见试验的方法及注意事项和一些常见的故障处理方法，说明新......
首次联合采用稳态与瞬态自体荧光光谱相结合的方法,比较分析人体结肠组织自体荧光与组织体主要内源性荧光分子标记物的荧光光谱特......
机械密封动力学性能对密封系统稳定性有很大的影响，微小的振动会导致密封泄漏量增加和端面磨损加剧。根据机械动力学原理，建立了流体......
从铒离子的能级结构出发,分析了掺铒光纤中绿色荧光的产生机理以及绿光荧光功率与泵浦功率的关系,克服了Giles模型在掺铒光纤绿光......
根据广西电网的实际情况,对无功补偿的作用进行分析和研究,提出了采用不同无功补偿的技术方案,对维持电网正常的额定电压,降低损耗......
使用SAC/SAC-CI和D95＋＋、6-311＋＋g及D95（d）等基组，分别对AlF的基态X^1∑^＋、第一简并激发态A^1П和第二激发态B^1∑^＋的平衡结构和谐振频率......
在测试和现场试验的基础上，研究了某厂600MW汽轮发电机组6．9m平台基础振动的特性，分析了6．9m平台基础振动超标的原因，提出了降低6．9m平台......
本文结合质量体系认证，完善计量检测体系的实践，分析，探讨了市场经济条件下有关企业计量人员的培训，考核，激励等管理工作的发展趋势，方法......
为克服外部干扰和不确定参数对励磁稳定控制的影响,解决由电磁功率反馈引起的非仿射励磁系统L2增益鲁棒稳定控制问题,提出一种扩展......
研究了可用于胃肠道内微型诊疗装置位置连续跟踪的电磁跟踪定位方法。利用泰勒级数展开方法，在筒化的单圆环线圈模型基础上建立了电......
使用SAC/SAC-CI和D95++,6-311++g,6-311++g**及D95(d)基组,分别对BF分子的基态X1∑+、第一简并激发态A1∏和第二激发态B1∑+的平衡......
根据变速恒频双馈发电独立电源的运行情况，提出了一种采用定子磁场定向的交流励磁变速恒频双馈发电机模型及控制策略，分析了电机运行......
直流脉冲发电机组是一种利用飞轮储能的脉冲电源。为了使该发电机组的应用范围更加广泛,本文研究了两机组并联运行时的运行状态。......
