光密度

Results show that when the scattering mean free path is close to the wavelength, the optical fields are localized obviously in the random media. And with the particle filling density increasing, the localization becomes stronger.

结果表明：当散射颗粒的散射平均自由程与波长相当时，随机介质中的光场分布呈现局域化的特征，而且随着颗粒填充密度增大，光场的局域化程度增强。

Results (1) CCD fluorescent microscope was superior to laser scanning confocal microscope in collecting the fluorescent image of DCF. CCD fluorescent microscope was chosen to be the system applied in this research with the consideration of operation, cost and et al. The mercury-arc lamp of fluorescent microscope was fit for the requirement of our study. The wavelength range of the light output was 460-490 nm and the power density was about 100mW/cm in the condition of our study. Organelle-cell fluorescence intensity ratio analysis was more suitable than other methods.

结果：(1)CCD荧光显微镜采集到的DCF荧光图像的质量优于共聚焦显微镜，同时综合考虑包括采图质量、光照射剂量的可控性、实验成本和操作简便性等诸多因素，最终确定了CCD荧光显微镜作为实验研究的工具；荧光军医进修学院硕士学位论文中文摘要显微镜的汞灯输出功率稳定，光斑均匀，经本实验所选取的光路系统后输出波长范围为460一490nm，功率密度约为1 00 mw/cm；细胞器一细胞荧光强度比值法对于荧光分布位置的确定优于其他方法。

The results show that the mass density of disc galaxies increases an order of magnitude from the early-type disc galaxies to the later one, oblateness decreases to minimum at Sd,m, and then increases Having excepted SO and IrII, these parameters vary with the type of disc galaxies monotonicly.

早先得出早型盘星系的质量密度要比晚型高一个量级Ⅲ。这是因为所用的质量值是光度质量，早年得到的早型星系的质光比大于晚型星系一个量级。然而后来的工作发现盘星系的质光比大约为同一值嘲。后来有

The establishment and relaxation processes of the transient gratings, which are formed by two recording 514nm beams with different polarization directions, SS, PP, SP and ±45℃, are investigated. Using the weak absorption of the chromophores at 632. 8nm and the positive dichroism of the chromophores molecules, a kind of bi-photonic transient gratings, owing to the periodic distribution of Trans and Cis isomers, is established first time in azo-dye doped polymeric bulk sample.

实验考察了两束514nm的写入光在不同偏振情况下（SS，PP，SP和±45），在样品中形成的瞬态栅的建立和弛豫情况；利用偶氮生色团在632.8nm波段的微弱吸收和生色团分子的正二向色性，首次在块状偶氮聚合物材料中形成一种基于生色团反式和顺式异构体密度分布的双色光瞬态栅；利用瞬态栅的快速建立和弛豫，考察了其在衍射型全光开关方面的潜在应用。

The results indicate that the photooxidation is obviously helpful to denitrogenation of the Shenfu macerals.

结果表明：光氧化对神府煤不同密度级组分的脱氮有明显效果；光氧化后固体残留物交联点间的平均分子量减小，交联度增加。

It was found that the selective photoreductionreaction of this uranyl compound could take place under pulsed IR laser irradiation and the rate ofphotoreduction depended on the frequency, energy fluence and numbers of pulses of laser.

用TEA-CO_2激光研究了室温下固体的甲酸铀酰钠的红外光化学反应，发现该化合物在脉冲红外激光照射下可产生选择性的光化还原反应，其光化还原率与激光频率、能量密度和脉冲数有关。

The COD value in the dorsal and dorsolateral subdivisions of the PAG in the kindled audiogenic seizures-prone rats were significantly higher than that in the naive audiogenc seizures-prone rats.

用光镜观察PAG各节段各亚区切片上突触密度的变化，以期在光镜水平上了解PAG在惊厥状态下超微结构的某些变化。

Pometia tomentosa and Barringtonia pendula had higher stomatal densit...

随光强的增大，气孔密度和气孔指数增大，单位叶气孔数在低光强下较大。

Therefore, thermal and photothermal imaging materials have attracted a great attention of researchers in science and technologies. Silver salt of behenic acid has been used as the silver source in the thermographic or photothermographic materials.

山嵛酸银作为热敏和光敏感热显影材料常用的成像银源，其晶体尺寸和形状直接或间接地影响热敏和光敏感热显影材料的性能，如透明度和影像密度等。

In Chapter 5, photo-induced absorption is used to study the intersystem crossing from singlet to triplet states of two polyfluorenes after doped with Ir-complex. It is found that the triplet exciton lifetime of PFs is reduced by the dopants. But instead of decreasing, the population density of PF triplet exciton increases by almost one order of magnitude. The finding shows that the ISC rate can increase over 100 times due to the spin-orbital interaction with the Ir ions.

第五章以光诱发吸收光谱技术研究两种聚芴高分子掺杂绿光铱错合物后，聚芴的单重态到三重态的内部系统转换效率的改变；研究发现在掺杂后，聚芴的三重态生命期减短，但出乎意料的是其三重态的态密度并没有随之降低反而有一个数量级的增加，其原因为单重态到三重态的内部系统转换受铱错合物的影响效率增加了100倍。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。