英语人>网络例句>spectra 相关的网络例句
spectra相关的网络例句

查询词典 spectra

与 spectra 相关的网络例句 [注:此内容来源于网络,仅供参考]

In this paper, the resonance fluorescence spectra, absorption spectra and the stimulated emission spectra of the atom and the molecule are discussed theoretically and experimentally.

本论文在理论和实验上研究了原子、分子的荧光光谱、吸收光谱以及受激辐射谱。

In the thesis, CE was combined with on-line sweeping and hollow fiber-basedliquid-phase microextraction technique. Efficient and sensitive methods were developedfor the determination of Strychnos alkaloids, carbamazepine in Chinese herbal medicinesand biological samples. The interactions of Strychnos alkaloids, fangchinoline,tetrandrine and carbamazepine with serum albumin were studied by fluorescencequenching spectra, synchronous fluorescence spectra, three-dimensional fluorescencespectra and ultra-violet spectra.

本论文将毛细管电泳分离技术与在线推扫富集技术、中空纤维液相微萃取技术相结合,建立了中草药和生物样品中的马钱子生物碱、卡马西平的高效、灵敏和选择性好的CE分离检测方法。

Next , Blue organic light-emitting material Liq is synthesized, purified with chemical and physical methods. The pureness of Liq is inspected with liquid chromatogram and element analytical methods. Then the structure token of Liq is carried out by X-ray diffraction, IR spectra, UV absorption spectra, cyclic voltammeter and fluorescence spectra, fluorescence spectrum.

结合实验条件,合成了蓝色有机发光材料Liq,对其进行了化学和物理提纯,用液相色谱及元素分析法进行了纯度检测,并用X-射线衍射、红外吸收光谱、紫外—可见吸收光谱、循环伏安曲线、及荧光光谱等测试手段对Liq进行了结构表征。

The main peaks of the EEG power spectra were in delta and theta frequency range. In the stage of ethanol exposure, the rats exhibited much more act of attack than the control, the alpha waves of EEG decreased, while the delta waves increased. The EEG power spectra analysis showed the delta power increased and the theta power decreased. In the stage of ethanol withdrawal, the rats showed some withdrawal behaviors such as wet dog shakes, sniffing, groomingand tonic-clonic seizures for audiogenic stimulus. Spikes and spike-slow waves were found in the EEG. In power spectra analysis, the delta power decreased while the alpha and the theta power increased, the EEG frequency band moved to the high-frequency rang. These changes were found obviously on the sixth day and disappeared on the 1 Oth day after the ethanol was removed.

本研究发现:1、对照组大鼠行为无异常,伏核EEG以α节律为主,散在出现δ和θ节律;功率主峰在δ和θ频段范围,整个过程中未发现手术对伏核EEG及脑电功率谱有影响。2、在慢性饮酒过程中,大鼠攻击性行为增加,伏核 EEG的α节律明显减少,散在出现的高幅慢活动δ波逐渐增多,功率谱分析表明δ频段功率百分比明显增加,而θ频段功率百分比明显减少,总功率减少。3、停饮后,大鼠出现湿狗样抖动、打喷嚏等撤药综合症,并且高频声音刺激能引发惊厥;伏核EEG出现棘波和棘慢综合波,并持续增多,功率谱分析显示δ频段功率百分比 5 南京医科大学硕士学位论文逐渐减少,而0和以频段功率百分比逐渐增加,总功率增加。

Secondly, 4 methods of azimuth estimation based on vector hydrophone according to forms of nosie and signal are brought forward. The principles of these 4methods are set forth, simulating them by computer. Acoustic intensity averager can effectively suppress isotropic non-coherent interference; DOA based on line-spectra can effectively detect the target radiating line-spectra and estimate its azimuth angle; Bar graph approach can suppress line-spectra coherent interference and distinguish different targets radiating line-spectrum. Weighted bargraph approach can detect target in broadband coherent interference and estimate its azimuth angle.

其次,根据背景干扰和信号样式的不同,提出了单矢量水听器方位估计的4种方法;阐述了这4种方法的原理,并进行了计算机仿真,指出平均声强器方位估计适用于各向同性噪声场背景干扰,讨论了平均声强器的处理增益;目标辐射噪声中有线谱时,线谱方位估计有很好的性能,其中的LOFAR线谱和高频解调得到的DEMON线谱都是目标的特征谱线,可以利用它们进行方位估计,详细讨论了利用特征线谱单个矢量水听器分辨多目标的性能;直方图方位估计能抗强线谱相干干扰;加权直方图方位估计可以抗宽带相干干扰。

The fourth-derivative analysis was performed on the spectra to set up the uniform initial central wavelengths for excitation spectra of dinophyta and bacillariophyta,respectively,according to the position and number of maxima on the derivative spectra.

对其作四阶导数分析的基础上,根据导数光谱中出现的极大值位置和数量,对甲藻门和硅藻门的激发光谱分别设定统一的初始中心波长。

In this thesis, the resonance fluorescence spectra of a A-type three-level atom is calculated, which is driven by two bichromatic fields having the same difference of the frequency. In addition, the influence of the relative phase difference on the fluorescence spectra are considered. It is found that the fluorescence spectra of the atom are deeply depend on the relative difference and the appearance and cancellation of the fluorescence are obtained by changing the relative phase difference.

文中以具有相同频差的两个双色场驱动下的三能级Λ型原子为模型,计算了其共振荧光谱,考虑了两个双色场的相对相位差对谱线的影响,结果表明:原子的荧光谱强烈地依赖于驱动场的相对相位差,可以利用相对相位差的改变对荧光的产生和抑制加以操纵。

The UV and IR spectroscopic studies of the monomer films showed that the photoreaction ratio of monomer (about 50%) was higher than the corresponding photosensitive polymer (about 10%, PVCi). The polarized IR spectra proved that obvious anisotropic absorption was displayed in the irradiated photosensitive film. With polarizing microscopy method, we found that these kinds of photoalignment films exhibited good alignment ability, and the stability of the photoalignment film could reach about 100℃. 2 A photosensitive self-assembled monolayer was fabricated that contained photo-cycloadditable groups, such as, coumarin and cinnamate. The reaction process were detected by contact angle method because the IR absorption of monolayer was very weak. The photosensitive self-assembled monolayer promote uniform alignment of nematic liquid crystals by LPUV, and it thermal stability could reach about 130℃. 3 A cationic bolaform amphiphiles was synthesized that had two photosensitive double bonds, and can be polymerized by ultraviolet. A layer-by-layer self-assembled deposition film was prepared in aqueous solution by using this material and poly (sodium 4-styrenesulfonate). The UV-Vis. spectra proved that the multilayers film was uniform and layer-by-layer. When LPUV irradiated the film, the photopolymerizable double bond underwent [2+2] cycloaddition, and the production of the reaction distributed along the polarized direction of incident LPUV. Polarized UV-Vis. spectra indicated that the irradiated self-assembled multiplayer film was anisotropic, and the dichromic ration is about 0.09, it is higher than the spin-coating method of photosensitive polymer or monomer. We used this anisotropic film as alignment layer of nematic liquid crystals, and obtained a uniform and stability alignment result, the static contrast ratio is about 100, which is very close to application of liquid crystal device. This thesis is an instance that the photochemical material was used in the physics region of liquid crystals, the route that was from photosensitive monomer, self-assembled monolayer film to self-assembled multiplayer film was undergone, by this logical research method photoailgnment of liquid crystal was extended and consummated.

围绕上述思路开展了如下工作:1合成了三种可进行光二聚反应的光敏小分子单体,LPUV 辐照制作了光控取向膜;用紫外-可见光谱法和红外光谱法分析了薄膜中的光化学反应,发现小分子的光反应程度可达到50%以上,至少比光敏高分子高出5倍;薄膜的偏振红外光谱证实,经过LPUV 辐照后薄膜出现了明显的各向异性;将小分子光控取向膜制成液晶器件,在偏光显微镜下观察看到均匀一致的液晶取向;并且热稳定性达到100℃左右,接近实用化要求。2制备了含肉桂酸、香豆素基团的自组装单层膜;采用接触角的方法监测自组装反应的动力学过程;紫外-可见光谱证实了自组装单层膜在石英基板表面形成;自组装单层膜经LPUV 辐照后能诱导液晶均匀取向,而且热稳定性可达130℃,热稳定性进一步提高。3合成了含有光敏双键的双季铵盐,在水溶液状态下将它和聚乙烯基苯磺酸钠沉积生成layer-by-layer 自组装多层膜,紫外-可见光谱证实这是一个逐层均匀的沉积;在LPUV 照射下,自组装膜中的光敏双键按照偏振方向发生[2+2]环加成反应,形成取向膜,用二向色性值评价的分子取向度高于高分子及小分子光控取向膜的水平;实验证明用自组装多层膜制成的液晶器件亮暗态均匀,静态对比度约为100,达到实用化器件的水平。

Serial types of important multiple-pluse NMRexperiments were analyzed: J-modulated spin-echo; polarization transfer; two-dimensional NMR spectra (NOESY,INADEQUATE,homonuclear COSY,heteronuclear COSY,SECSY,homonuclear J-resolved spectra,heteronuclear J-resolved spectra).

二维谱实验,分析了NOESY实验INADEQUATE实验、同核COSY实验、异核COSY实验、自旋回波相关谱SECSY实验、同核J分解谱实验和异核J分解谱实验(涉及质子反转门控去偶、FOCSY门控去偶和RE-FOCSY门控去偶四种实验)。

The electronic spectra and NMR spectra of both isomers have been calculated based on the similar studies about the isoelectronic molecules C~6~0O and C~6~0CH~2, the electronic spectra of which are in good agreement with the experimental results.

文中计算了两种构型的电子吸收光谱和NMR谱,此类计算是基于对C~6~0SiH~2的等电子体C~6~0O和C~6~0CH~2的研究之上,且后两者的研究结果与实验相一致。

第3/100页 首页 < 1 2 3 4 5 6 7 8 9 ... > 尾页
推荐网络例句

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援,我们正徵召国家所有各种的力量:我们的外交及发展,我们的经济力量与道德劝说,所以你们与其他军人不须要孤独地负起国家安全的责任。

Imagine yourself to be an actor in a play on the stage.

设想你自己是一个演员在舞台上表演。