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Objective The aim of the study was to investigate the clinical features,imaging features,and prognosis of splenium of th......
Laser irradiation induced spectral evolution of the surface-enhanced Raman scattering(SERS) of 4-ter
The spectral evolution of the surface-enhanced Raman scattering (SERS) of 4-tert-butylbenzylmer-captan (4-tBBM) on gold ......
The proton resonant properties in 18Ne, which determine the reaction rate of the key stellar 14O(α,p)17F reaction, have......
We study the effects of mechanical nonlinearity arising from large thickness-shear deformation on the transient process ......
A novel micromechanical bridge-shaped voltage-controlled oscillator with high Q value was fabricated. The core of this ......
Resonant detection of terahertz radiation utilizing plasma waves in high-electron-mobility transisto
This paper theoretically studies the high-electron-mobility transistor (HEMT) driven by the terahertz radiation. It calc......
Whispering-gallery microcavity semiconductor lasers suitable for photonic integrated circuits and op
The characteristics of whispering-gallery-like modes in the equilateral triangle and square microresonators are introduc......
To improve the frequency stabilization of laser diode in the laser frequency scanned interferometric metrology, a modifi......
By using the coupled mode theory and the transfer matrix technique,the optical transfer function is presented for analyz......
Graphene saturable absorber(SA) is used as the passive Q-switcher of a 0.9-μm solid-state laser.When the laser medium i......
In this Letter, we demonstrate a diode-pumped electro-optical cavity-dumped Tm:YAP laser for the first time to our knowl......
The passively Q-switched Yb:NaY(WO_4)_2(Yb:NaYW) laser is studied.By using Cr~(4+):YAG as the saturable absorber,a very ......
A roof isolation system is proposed to reduce the dynamic response of buildings to earthquake excitations. In the syst......
Wind loading is one of the most important loads for controlling the design of large-span roof structures. Equivalent sta......
SPATIAL AND TEMPORAL VARIATIONS OF THE KINEMATIC CHARACTERISTICS IN THE PROPAGATION OF ATMOSPHERIC S
Time-mean global general circulation data are employed to analyze the temporal and spatial variations ofthe meridional ......
The poly-[2-methoxy,(5-2′-ethyl-hexyloxy)-p-phenylene vinylene](MEH-PPV) film is investigated by means of the Multi-Col......
Resonance properties of THz plasmonic dipole-bowtie antenna array: The critical role of the substrat
Subwavelength arrays of dipole-bowtie antennas are designed and characterized using terahertz time-domain spectroscopy(T......
Fiber inline interferometric refractive index sensors fabricated by femtosecond laser and fusion spl
A fiber inline interferometric refractive index(RI) sensor consisting of a microchannel and a fiber taper is proposed in......
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
利用多元件腔的衍射积分方程及光学ABCD定律,得出了多程环形腔小孔耦合输出模式的相关计算公式.理论分析和迭代法数值计算表明,低......
在BR缓冲溶液中，藻酸钠（SA）能与某些碱性二苯基萘基甲烷染料如维多利亚蓝4R（VB4-R）、维多利亚蓝B（VBB）和夜蓝（NB）结合，而使共振瑞利散射（RRS）急......
钻铤因素直接影响着钻柱振动的整体效果。钻铤长度是硬岩钻井中引起钻柱剧烈振动的一方面原因，同时也是解决钻柱振动的主要突破口。......
虽然钻井中的声波传播理论已比较成熟，但在纵、横渡的激发机制方面仍存在着一些不同的观点。本文通过对纵、横波割线积分进行分析，导......
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这篇论文为与干燥磨擦决定片的稳定的州的反应论述一个分析方法更潮湿。一个完全的颤动周期被划分成四连续间隔。系统在每这些间隔......
在230nm激光激发下，氧硫化碳（Ocs）分子迅速解离生成振动基态但高转动激发的cO（x1∑g1，V=0，J=42—69）碎片，并通过共振增强多光子电离技术实......
为改善单相AC-DC-AC变换器的性能,提出了一种单相谐振直流环节零电压开关AC-DC-AC功率变换器拓扑结构,由图腾柱式单相整流器,位于......
为了研究电容器放电结束后的能量补充，推进电容器充电电源（CCPS）根据电容器输出电压的要求，对带电阻器的高压直流电源、谐振充电电源和......
设计了中心频率相同的圆环、十字、Y孔三种常见单元的频率选择表面（FSS）结构,并将三种单元FSS置于吸波材料中构成复合吸波结构。利用......
BACKGROUND:Ampullary carcinoma is a neoplasia with a good prognosis compared to pancreatic cancer. But it is difficult t......
Diagnostic performance of the current risk-stratified approach with computed tomography for suspecte
Background:Several studies evaluated the current guideline of the American Society for Gastrointestinal Endoscopy(ASGE)a......
首先说明了微机械陀螺的四种传统检测方法的局限性，然后设计了一种新型的基于介观压阻效应的GaAs／AlAs/In0.1Ga0.9As贴膜微机械陀螺．......
超声换能器的组织负载特性研究对提高其性能和安全性有重要的意义。选择新鲜的猪离体组织,利用动态信号分析仪的小信号及在线导纳......
基于高次谐波体声波谐振器(HBAR)的一维纵向振动模型,研究了获得工作在某一谐振频率HBAR的几种频率修正方法,即减薄基底或顶电极,......
以铜自动包装生产线致密工位中下顶式压力机为研究对象,以大型有限元分析软件ANSYS为工具建立压力机的模型,并进行了模态分析,获得......
Ulcerative colitis (UC) is a chronic inflammatory bowel disease that may become intractable when treated with convention......
基于尘埃等离子体的色散关系,在不考虑高/低频近似的情况下,推导了尘埃等离子体谐振频率和增长率的表达式,讨论了尘埃质量、尘埃密......
在区间非概率可靠性模型的基础上,以区间长度l和区间下限α为结构系统变量的输入参数,重新定义了一种新的可靠性指标,分析得到了这......
虚假会计信息已成为困扰有关各方的一个严重问题.究其原因,主要是由于利益的驱使,部分会计人员的素质偏低以及惩治力度不够等造成......
对Co（Ⅱ）-DDTC、Cu（Ⅱ）-DDTC、Cd（Ⅱ）-DDTC、Pd（Ⅱ）-DDTC、N i（Ⅱ）-DDTC、Pb（Ⅱ）-DDTC、Fe（Ⅱ）-DDTC 7种螯合微粒体系的吸收光谱和共振散射光谱进......
作者提出了一种医用椭圆环微带辐射器的分析设计方法，并给出辐射器加热的实验结果。通过改变椭圆环微带辐射器的形状参数即可获得形......
<正> We investigate the inter-well coupling of multiple graphene quantum well structures consisting of graphenesuperlatt......
介绍了一种采用移相控制零电压开关PWM三电平变换器的电力整流模块,讨论了主电路和控制与驱动电路的设计,并给出谐振电感的参数设......
自20世纪90年代中期开始,在全球领域内掀起了企业并购的浪潮,对世界经济产生了巨大的影响.中国加入WTO之后,中国企业将更加直接地......
高功率半导体侧向泵浦固体激光器中的动态热效应严重影响激光的光束质量。本文从研究激光热稳定腔的输出特性出发,测量了激光输出......
利用压电材料的压电及运动方程，本文研究了切向极化压电陶瓷细长棒的扭转振动，分析了扭转振动压电陶瓷细棒中扭转角及扭矩的分布规律......
讨论Fourier级数的线性求和算子列是收敛算子列的充要条件....
利用尼龙无纺布（PNF）和芳纶无纺布（ANF）为插层材料,采用共固化工艺制备了结构阻尼复合材料。利用动态力学分析仪测试并分析了复合材料......
光伏发电并网系统中多台并网逆变器之间、逆变器与电网之间的交互耦合会引起系统串、并联谐波谐振,严重地影响了电网电能质量,因此......
在pH=5.9的NaAc-HAc缓冲溶液中,法莫替丁（FMTD）与Hg（Ⅱ）反应形成五元环螯合阳离子（[Hg（FMTD）]2＋）,再进一步与十二烷基硫酸钠（SLS）、十二烷基苯......
