Effects of Brain White Matter Anisotropic Conductivity on Distribution of EEG Calculated with Finite Element Method Based on Diffusion Tensor Image ( DTI) of Nuclear Magnetic Resonance 基于扩散张量成像利用一阶有限元方法计算脑白质各向异性电导率对脑电位分布的影响
Velocity distribution measurement of atomic beams by means of atomic beam deflection under resonance light pressure 利用共振光压偏转原子束的方法测量原子束速度的分布
The magnetic field distribution should fulfill the requirements of isochronisms and transverse focusing of the beam, as well as avoiding dangerous resonance crossing. 磁场分布需要满足粒子等时性加速和粒子径向、轴向聚集要求,同时避免危险的横向共振。
Study on the Distribution of Specific Absorption Rates in Human Head Effected by B_1 Field During Magnetic Resonance Imaging 磁共振成像检查中B1场作用下人体头部比吸收率分布的研究
Spectrum distribution of resonance fluorescence for atoms in strong magnetic field 强磁场中原子共振荧光的光谱分布
The distribution feature of background level of paramagnetic materials in enamels of healthy adults aged 18~ 41 and the difference of their radiation sensitivity were studied by electron spin resonance ( ESR) techniques. 用电子自旋共振(ESR)技术研究了健康成年人牙釉质中顺磁物质本底水平分布特性及其辐射敏感性。
When the size, shape and distribution of silver particles changed, the intensity and position of the surface plasmon resonance and the split extent of electron step can be modulated, and thus we can get opto-functional materials to meet different demands. 改变基质中银粒子的大小、形状及分布,可调整银粒子表面等离激元共振的频率、强度和电子能级的分裂程度,从而得到符合不同要求的光功能材料。
A Periodic Network model of transmission line is used to predict the longitudinal voltage distribution along the electrodes of RF slab CO2 lasers. The extensive practical success of Parallel Resonance Technigue in those lasers is interpreted. Two ways for further voltage uniformity are presented. 本文利用周期性网络模型计算了射频板条CO2激光器电极的纵向电压分布.探讨了并联谐振技术在板条器件中获得成功运用的原因.提出了利用并联谐振技术进一步提高电压分布均匀性的两个途径。
We obtained the conditions under which the maximum non-equilibrium distribution of the population of alkali atoms in the ground state in atomic beam pumped by laser-MW double resonance is achieved. These conditions are consistent with recent experiments. 本文求得了激光微波双共振抽运碱原子束时基态原子实现最大非均衡分布的条件,这与新近的实验结果相符。
Preliminary Study of the Distribution of Target Magnetic Nanoparticles in Mice Measured by Magnetic Resonance Image In Vivo 磁共振检测纳米磁靶向性药物在荷瘤小鼠体内分布的初步研究
The methods for determining the distribution parameters of design magnitudes are given together with reliability calculation models for distancing from resonance or being in resonance, limiting vibration response as well as distancing from vibration induced by fluid. 文中介绍了机械零件振动设计量分布参数的确定方法和避开(或落入)共振、限制振动响应、避开流体诱发振动的可靠性计算模型。
The distribution of different chain elements and the end group structure were derived from the chemical shifts and the intensities of the fluorine resonance lines. 由谱线的化学位移和强度归纳出不同链节结构的分布,同时阐明了端基结构。
The results showed that the difference in distribution emission intensity of lamp source appeared one of important factor to produce resonance scattering peaks. 结果表明,光源的发射强度分布不一是产生共振散射光谱峰的一个重要因素。
The characteristics of Lorentzian distribution in the power spectrum of a stochastic resonance ( SR) from a bistable system have been investigated, and then the viewpoint of producing an identifiable SR peak only at the lower frequency area where the power energy being concentrated has been proposed. 研究了双稳系统随机共振频谱的洛伦兹分布特征,得出在谱分布能量较集中的低频区才能产生可辨识的随机共振谱峰。
Along with the extensive use of power cable lines in power distribution system, the probability of fundamental frequency resonance has greatly increased. It may endanger the normal operation of the power system. 随着配电网中电缆线路的大量使用,出现基波电流谐振的可能性大大增加,威胁系统的正常运行。
In chapter 6, the effects of lumped masses, distribution modes of counterweight and moving masses to the parameters resonance characters of counterweight stayed-cable are studied by the experiment. 第6章实验研究了集中质量、配重分布方式、移动质量对斜拉索参数振动特性的作用。
It is found that the steady temperature distribution will not affect the qualitative dynamic behaviour of primary resonance of functionally graded cylindrical shells, while it will change the relation of the amplitude response of system with grade exponent of FGM. 研究发现稳态温度分布不会影响FGM圆柱壳主共振的动力学定性行为,但是温度会使系统的幅值响应随梯度指数的关系发生变化。
It overcomes the limitation in the assumption in other semi-supervised learning algorithms that probabilistic distribution of data is known, and has the strong ability of learning new patterns and correcting errors because of stability and plasticity of the adaptive resonance theory. 在该系统中取消了一般半监督学习算法中假定已知数据概率分布的条件限制,利用自适应谐振理论的稳定性和可塑性,使其具有非常强的学习新模式和纠正错误能力。
Comparing their surface current density distributions, it is found that the distribution of conduction currents of magnetic resonance patch, that is, a reasonable arrangement of magnetic resonance patch lattices is the key to the broadband transmission with low attenuation. 表面电流密度分布的结果对比发现磁谐振贴片传导电流的强弱分布,亦即磁谐振贴片格子的合理布置对实现低衰减的宽带传输非常关键。
The parameter retrieval results, surface current distribution, analysis of critical parameter and transmission experiment in PPW system are also utilized to distinguish the electric and magnetic response for different resonance regime. 4. 通过参数提取,表面电流分布,关键参数研究以及平板波导中的能量传输实验的结果来区分不同频段谐振处的电响应和磁响应。
PT resonance occurs in the neutral point ungrounded system of electric distribution network frequently. The root cause of PT resonance is the nonlinear characteristics of the electromagnetic voltage transformer. PT谐振大多数发生在中性点不直接接地的配电网中,由电磁式电压互感器饱和引起,电磁式电压互感器的非线性特性是铁磁谐振产生的根源。