For a coherent harmonic generation experiment the electron energy, the OK undulator gap and the wavelength of the seed laser must meet the requirement of resonance bondition. 电子束和种子激光一同通过光学速调管时,产生相干谐波辐射,这是获得短波长相干光的一种很有希望的途径。
We believe that the expression are useful for evaluating the energy variations of transmission coefficient and estimating the resonance energy, and also useful in fabrication of resonant tunneling devices. 所得结果对于分析透射系数随能量的变化关系,估计共振能级以及制造共振隧道器件都具有十分重要的意义。
Methods: Energy metabolism of hind limbs in rats at 36 ℃ was defined with~ ( 31) P magnetic resonance spectroscopy. 方法:采用31P磁共振波谱技术对大鼠离断肢体在36℃环境下的能量代谢变化进行测定。
Luminescence intensity of Tb 3+ greatly enhanced after doping Gd 3+. Because of energy level matching, luminescence of Tb 3+ is sensitized by Gd 3+ through resonance energy transfer of nonradiation. 共掺杂样品由于Gd3+离子的加入,极大的提高了Tb3+的发光强度,由于能级匹配,Gd3+离子通过无辐射共振能量传递敏化Tb3+的发光。
THz photon energy can be characterized by the difference of gate voltage positions between the resonance peak and satellite peak. 通过这两个峰位的栅压间距可以估算出THz光子的能量。
So this system of fluorescence resonance energy transfer is applied to the determination of Cr(ⅵ). Fluorescence Resonance Energy Transfer Assay: Applications in The Study of Protein-protein Interaction 利用藏红T-钙黄绿素能量转移荧光法测定痕量的Cr(Ⅵ),提高了测定铬的灵敏度.FRET技术及其在蛋白质-蛋白质分子相互作用研究中的应用
Although the positive slope saw-tooth carrier can avoid these problems above mentioned, it brings zero vector states around the vertical edges where the energy cannot be exchanged between the motor and the resonance circuit and thus the condition of soft-switching resonance cannot be satisfied. 采用正斜率锯齿载波虽然能解决上述问题,但是会造成在锯齿波垂直沿前后处于零矢量状态,电机的能量与谐振电路不发生交换,不能满足软开关谐振条件。
When the frequency of CP pulses is lower, average voltages and currents of windings will decrease and magnetic field energy of motor is very little so as not to produce resonance. 当CP脉冲为低频时,各相绕组平均电压和平均电流较低,电动机磁场储能较少,一定程度上克服了共振现象。
In the research of microwave energy, the key problem is the design of microwave resonance cavity. 在微波能应用研究中,核心问题是微波能应用器的设计,关键就是微波谐振腔的设计。
The radius of color screening in medium is in inverse proportion to the density of color charge and energy. When the radius of color screening is smaller than that of resonance state, strong interaction will decrease sharply and bound states can't exist. 因为介质中的色屏蔽半径反比于色荷密度和能量密度,当屏蔽半径比共振态尺度小时,强相互作用力会减小得很厉害,使得束缚态不可能存在。
Based on Schrdinger equation, the method of analytical continuation in the coupling constant ( ACCC) is employed to investigate the energy and width of single-particle resonance in spherically symmetric square well, harmonic oscillator potential and Woods-Saxon potential. 基于Schr¨odinger方程,利用耦合常数解析延拓方法研究了球对称的方势阱、WoodsSaxon势和谐振子势中的单粒子共振态的能量与宽度。
According to the variation of magnetic energy, differential equation of dual resonance was gotten by means of calculus of variation in this paper. 本文根据转子的磁场能量,利用变分的方法,得出了转子双重振动的运动微分方程。
Based on analysis models of energy response character of structure with multiple degrees of freedom in forced vibration, some conclusions of energy resonance are drawn out from the result of an example of a column structure. 从结构的能量平衡方程出发,对多自由度结构受迫振动中的能量响应特性和能量共振进行了分析。
The energy and life-time derived in this way are in accordance with the energy and width of the corresponding resonance scattering. 此能量与寿命符合于相应共振散射的能量与宽度。
The spacing of Ir is probably somewhat over estimated since the values of the energy and absorption coefficient of the resonance neutron group, used in the estimation, are not very accurate. 因计算时所用共振中子之能及吸收系数不太准确,估计所得铱之间隔大概过高。
The finite element analysis of the stator indicates that the energy of the noise comes from the resonance of the stator at 10.74 kHz. 对定子作有限元分析,得到定子的一阶模态频率为10.74kHz,与噪声频率非常接近,表明分数次谐波激发了定子共振,为噪声输出提供了能量源。
Meanwhile, we examine the conservation law of three-wave resonance system and the transformation of energy in the course of resonance excitation. 同时,还探讨了共振三波组的守恒律以及共振激发过程中能量的转换。
Based on the averaging method in the non-linear vibration theory and combined, with the mechanical energy conception, the energy method for the problem of multiple resonance in non-linear vibration of elastic shaft system has been found. 本论文以非线性振动理论的平均法为基础和力学的能量概念结合起来,找到了求解弹性体系非线性振动多重共振的能量法。
The energy method of multiple resonance in nonlinear vibration of elastic body 弹性体非线性振动多重共振的能量法
The data calculated by the use of resonance energy and tension energy show that the unstability of cyclobutadiene and cyclooctatetraene are not contradictory with resonance theory. 用共振能和张力能的计算数据,说明了环丁二烯和环辛四烯的不稳定性与共振论并不矛盾。
Energy levels and spectroscopy of alkali metal atom with two-photon resonance 碱金属原子双光子共振的能级与光谱
Because of the interaction between bonds, the variation of wave function of a shallow level is small, but the correction on the ionization energy may be appreciable. This is in agreement with the hyper-fine structure data of the electron spin resonance. 对浅能级,由于键间相互作用,电离能可以有相对较大的修正,但波函数却变化很小,这与电子自旋共振超精细结构的实验结果一致。
The result of analyses show that drive impulse width signifies much to ultrasonic emitting energy and the ultrasonic transducer will produce the maximum ultrasonic energy when the drive impulse width equals a half of the resonance cycle. 分析表明,激励脉冲宽度对超声换能器发射功率影响极大,换能器取得最大发射功率所对应的激励脉冲宽度为其谐振周期的一半。
The energy dissipation capability of plasticity can reduce the structural displacement response more than damping, especially during resonance. 结构的塑性耗能比阻尼耗能更有利于结构振动位移的控制,尤其在共振条件下更为显著。
The high voltage direct current charge system employs the mode of the AC alternate voltage charging; the temporary energy storage and primary pulse generating system consist of the resonance circuit and the pulse transformer; the 3-stage magnetic pulse compression network is adopted as the pulse compression link. 其中,高压直流充电环节采用交流调压的充电方式;中间储能脉冲形成环节由谐振倍压电路及脉冲变压器组成;采用三级磁脉冲压缩网络作为脉冲压缩环节。
Magnetic resonance electric energy transmission is sensitive to the direction of transmission. Propose and design the resonance coil with three dimensional structures and the direction independence of receiving end is improved efficiently. 磁耦合谐振电能传输对传输方向较敏感,提出并设计了三维结构的谐振线圈,有效地提高了接收端的方向无关性。
In the first stage, basing on the quality of light beam 、 output energy, we also make exploring research on optimizing the relative parameter of light-gathering device and resonance cavity in theory. 在前期研究的基础上,从改进光束质量、提高输出能量的角度出发,对聚光器、谐振腔的相关参数给与了理论上的优化计算。
On the basis of character analysis of the magnetic resonance image, this paper raised a algorithm based on energy constraint. This algorithm chooses direction information measure and the number of 0 pixels in the target zone of the magnetic resonance image as the energy function. 在深入分析磁共振图像特点的基础上,提出基于能量约束的平移运动伪影校正算法,选取方向信息测度和磁共振图像非目标区0值像素点个数的组合作为能量约束函数。
We measured the seed oil contents of four potential energy plants using the methods of Nuclear Magnetic Resonance ( NMR) and Soxhlet Extraction, and compared the results between them. 本文采用核磁共振法和索氏提取法测定了4种潜在能源植物的种子含油量并对其进行了分析比较。
By probing its spatial and energy dependent STS, we demonstrate the coexistence of Dirac point and resonance peak at the impurity center. 通过分析共振峰随空间和能量的变化情况,我们证明该中心处的共振峰与Dirac点是共存的。