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令G是简单图.记(∠)(G)为图G的规范拉普拉斯矩阵,其特征值称为图的规范拉普拉斯特征值.[Adv.Math.(China),2017,46(6):848-856]给......
Spatiotemporal control of femtosecond laser filament-triggered discharge and its application in diag
Precise control of the discharge in space and time is of great significance for better applications of discharge plasma.......
To meet the rapid growth of mobile communica-tions services,the continuously upgraded wire-less networks significantly i......
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A novel method of direct synthesis of CeO2 nanoparticles onto multi-walled carbon nanotubes (MWNTs) was developed with a......
Laser-induced breakdown spectroscopy(LIBS)system was developed for determination of heavy metals in cultivated land arou......
Spectrum of Epstein-Barr virus-associated diseases in allogeneic hematopoietic stem cell transplanta
Background: Epstein-Barr virus (EBV) infection may result in a spectrum of diseases in recipients of allogeneic hematopo......
The growth of the concentration of CO2 results in the global warming.The atmospheric temperature can impact the intensit......
In this work, some measurements have been performed on the natural neutron spectrum by a multispeed neutron spectrometer......
测出了氟锆酸盐玻璃(ZBLAN)中Ho3 离子的激发光谱和发射光谱，算出其振子强度，辐射跃迁几率和受激发射截面.详细地研究了这种基质中离......
研究了Kerr透镜锁模钛宝石激光器中腔内群色散改变时脉冲的动态特性。实验研究了腔内群色散改变时输出脉冲的频谱、中心波长以及脉......
开发了神光III主机装置上的背向散射诊断技术。采用非球面金属镜配空间滤波器的方式将倍频晶体返回的杂散光滤除，采用矩形小孔将楔......
针对太阳能利用技术中, 动态和准确模拟太阳光照的问题, 研制了一种基于轨道参数的全天候室内太阳模拟装置。根据静态的太阳轨迹数......
根据部分相干光理论, 得到了光纤环光谱传递函数。 并分析了光纤环光学长度、 耦合输出系数、 损耗对光纤环光谱传递函数的作用。......
研究了在恒温变电流与恒电流变温下蓝光单色芯片的电致发光光谱特征,以及在这两种模式下蓝光芯片与荧光陶瓷封装形成的白光LED的发......
首次报道了掺铒铌酸锂晶体的频率上转换发光效应和该晶体的全吸收谱、绿光发射上能级4Ｓ3/2态的荧光寿命，以及其与温度变化的关系等，并......
基于自混合散斑干涉的转速测量,提出一种新型的转速测量方法。激光自混合散斑系统作为测量和参考光, 利用自混合散斑信号的频谱来......
为提高光纤传感系统的复用能力，常将多个谱型重叠的传感器串联，由此引发的串扰效应会导致测量误差的产生，从而需要对串扰效应进行深入......
研究了光学鉴频器的精密温控方法及其对鉴频光学谱线、鉴频误差的影响。设计了双层温控结构及电路,采用三线制等长接法、双路电流......
为使现代电子侦察技术能适应信号密集、宽频谱、大动态的电磁环境, 提出了一种基于声光偏转器实现相关光信号处理的方法, 分析了射......
测试了Tm:YAG晶体的室温吸收光谱和荧光光谱，计算了各吸收谱线的振子强度，并根据Judd-Ofelt理论计算了Tm:YAG晶体的荧光跃迁截面和荧......
采用激光诱导击穿光谱法(LIBS)检测保定周边三个产粮基地土壤中的重金属元素，并利用光谱定量法分析元素浓度。结果表明，三个基地中元......
傅里叶变换干涉成像光谱仪的光谱重构过程主要基于光源光谱和其对应干涉图的傅里叶变换对关系。采用傅里叶变换或余弦傅里叶变换方......
为识别空间外差光谱仪探测目标干涉信号的特征信息, 提出一种基于经验模态分解与回归分析的空间干涉谱目标提取方法。首先对预处理......
用黄色和橙色硅酸盐荧光粉制备了白光LED, 调整黄粉和橙粉的比例得到不同的色温。 对样品进行光学测试, 发现黄粉与橙粉的比例小于......
采用假定所有旋转能级独立辐射和碰撞加宽劳仑茨线宽的准平衡模型,对XeCl B-X跃迁自发辐射谱进行了数值模拟计算,从而解释了高气压......
提出了一种在离轴数字全息再现过程中确定参考光角度和简化滤波器设计过程的方法。分析了模拟参考光照射下的离轴数字全息图的频谱......
分析了kW级光纤激光器实现单模激光输出的模式控制方式。采用主振荡功率放大方式，实现了工作波长1.08 μm、最大输出功率1.05 kW的......
采用UVPC和DSC等测试手段系统研究了稀土Sm2O3掺杂BaO－Al2O3－P2O5(BAP)激光防护玻璃的光谱性能及析晶性能。结果表明：吸收光谱的特征......
提出了一种新颖的光纤液位传感器。在普通单模光纤(SMF)中间熔接一段细芯单模光纤(TCSMF)，构成共轴光纤马赫曾德尔干涉仪(MZI)。液......
采用高温固相法合成了(La,Ce,Tb)BO3绿色发光粉，并对该发光粉进行了XRD和SEM分析。结果表明：(La,Ce,Tb)BO3的晶体结构和LaBO3相同，Ce3......
本文通过振动-旋转耦合的旋转谱线计算,解释了XeCl准分子激光的超精细光谱结构.计算结果与实验很好地符合.......
采用提拉法生长了Yb掺杂原子数分数为0.5%的Yb:Y3Al5O12(Yb:YAG)晶体,对晶体的吸收光谱和荧光光谱进行了分析。与Yb掺杂原子数分数......
在稳态和准稳态近似下求解速率方程,计算了激光通道空间分离式激光器的输出光谱。从理论上和实验上对通过改变泵浦功率在增益介质......
制备了几种不同化学成分的掺Pr3 氟化物玻璃，测定了玻璃的吸收光谱和荧光光谱。根据Judd-Ofelt理论模型研究了玻璃成分对Pr3 发光性......
Hemoglobin structure at higher levels of hemoglobin A1C in type 2 diabetes and associated complicati
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Autism spectrum disorder(ASD)is characterized by various symptoms including impaired social interactions,unusually repet......
In this paper, the principle of Cuckoo algorithm is introduced, and the traditional Cuckoo algorithm is improved to esta......
本文利用谱方法和CI-群性质,对双循环群T4p=＜a,b|ap=b4 = 1,b-1ab =a-1＞(其中p为奇素数)上的低度(四次、五次和六次)Cayley图的同构......
The Structure of Essential Spectra and Discrete Spectrum of Three-Electron Systems in the Impurity H
We consider a three-electron system in the Impurity Hubbard model with a coupling between nearest-neighbors. Our researc......
With the vigorous development of national infrastructure construction and public information construction,video surveill......
Ultrafast Decay Dynamics of N-Ethylpyrrole Excited to the S_(1)Electronic State:A Femtosecond Time-R
N-ethylpyrrole is one of ethylsubstituted derivatives of pyrrole and its excited-state decay dynamics has never been exp......
BACKGROUND Neuromyelitis optica spectrum disorder(NMOSD)is a demyelinating autoimmune disease that affects the central n......
The increasing incidence of multidrug-resistant <i>Klebsiella pneumoniae</i> strains has become a serious global healthc......
Tuberous Sclerosis Complex Associated with Autism Spectrum Features and Bumetanide as a Pharmacologi
A wide variety of genetic and non-genetic pathologies share serious psychiatric symptoms, which determine a poor quality......
A rovibrational model,including anharmonic,centrifugal,and Coriolis corrections,is used to calculate π,K,N,and ∑ orbit......
The application of label-free imaging technologies in transdermal research for deeper mechanism reve
The penetration behavior of topical substances in the skin not only relates to the transdermal delivery efficiency but a......
HPLC Study on HPLC Characteristic Spectrum of Huoxiang(Herba Agastachis)Eliminating Summer-heat Soft
To establish HPLC characteristic spectrum of Huoxiang(Herba Agastachis)Eliminating Summer-heat Soft Capsule.Chromatograp......
Extensive Air Showers(EAS)induced by cosmic ray particles of very low energies,owing to the significantly steep cosmic r......
Application of an aerosol electrical mobility spectrum analyzer: Charged-particle polarity ratio mea
An aerosol electrical mobility spectrum analyzer(AEMSA),developed at Hanyang University,was employed to investigate the ......
