光

Because vegetation sourced photosensitizers are unstable, low concentration in plant and insignificant effect, we put our emphasis on a kind of chemical photosensitizers - xanthene.

由于植物源光敏化合物不稳定、含量低、效果差等一系列固有的缺陷，本论文着重研究了一类化学合成的光敏化合物——呫吨类化合物的光敏生物活性、光降解及开发利用。

The results showed that the rate of photosynthesis, the contents of individual and total carotenoids and the pool size of xanthophyll cycle decreased with age increasing of the leaf.

结果表明：随着叶片的衰老，光合速率、类胡萝卜素不同组分及总的类胡萝卜素含量和叶黄素循环库下降；不同叶龄的叶片经高光胁迫后，第 5叶qN增加的幅度比第 6叶和老叶(第 3和 4叶)大；与高光胁迫前相比，第 3、4、5和 6叶光系统Ⅱ激发压(1-qP)分别增加了 4 4 %、5 7%、19%和 4 5 %；第 5叶具有高胡萝卜素含量和高紫黄质到玉米黄质的转化，这与其呈现较强的抗高光胁迫相一致。

All optical switches use the third-order optical nonlinearity of materials, whose work principle can be described as follows. One laser beam inducing the change of refractive index of materials, signal beam transmitted in mate rials will produce accessional phase change to realizing the "On" or "Off" ofoptical switches.

全光开关的工作原理利用了材料的三阶非线性光学特性，用一束光引起材料的折射率发生变化，信号光在其中通过时就会带来相位的变化，从而实现光开关的开关动作。

Light guide plate molding technology is a optic dot transfer method by molding. Melt resin is injected into mold cavity, where optic dots are carved on to cavity surface. Then melt resin is transfered to LGP by keeping pressure, cooling and ejecting. Molding LGP have optic dots as same as optic dot design of mold stamper. LGP accidented optic dots are relative with mold optic dots.

导光板注塑成型技术是一种通过光学网点转移的方法成型导光板的技术，即将融熔树脂注入带光学网点的模具型腔，经过保压、冷却后脱模得到导光板，注塑成型得到的导光板具有模具型腔所赋予的光学网点，这些网点的凹凸性和模具型腔网点的凹凸性互补。

However, unlike the light source relative to the rest of the observer to see is the colorless astigmatism, and the light source relative motion of the observer to see is the red-shift light ( achromatous astigmatism occurs redshift of red-shift light ); Although the different inertial reference frame of the observer can see the speed of light, after the Lorentz transformation is the same as after c; but a different observer are exposed to the light energy is not the same achromatous (astigmatism energy and achromatous astigmatism occurs after the red-shift of red-shift of the light energy is out of the same ).

但是，与光源相对静止的观察者看到的是无色散光，而与光源相对运动的观察者看到的是红移光（无色散光发生红移后的红移光）；虽然，不同惯性参照系的观察者看到的光速，经过洛伦兹坐标变换后都一样为c；可是不同的观察者所承受到的光能量是不相同的（无色散光的能量和无色散光发生红移后的红移光能量是完全不相同的）。

In this thesis, some novel fluoro-containing alkoxyl metallophthalocyanines asphotosensitizers for the treatment of cancer were designed and synthesized; some of theirproperties related to photosensitizer such as spectra properties, photooxidation ability, DNAphotocleaving ability, and photodamage on tumor cells in vitro were studied.

论文在比较了目前用于光动力作用光敏剂的优缺点的基础上，设计、合成了含氟烷氧基取代的金属酞菁衍生物，并对它们的光谱性能、光氧化性能、对DNA的光敏切断性能及对离体细胞的光动力损伤作用进行了研究。

The results showed that the application of photocatalytic oxidation to the treatment of wastewater was feasible and efficient, but it was affected by the operation conditions.There existed optimum value of the dosage of catalyst, initial benzamide concentration and pH value for the photocatalytic oxidation performance.H2PO-4,Cl-, Cu2+ and Al3+ showed obvious inhibition to the photocatalytic oxidation.

结果表明，循环式浆态光催化反应器中光催化剂的用量、污染物的初始浓度和初始pH值对模拟污染物光催化降解性能的影响存在适宜值；体系中H2PO-4、Cl-、Cu2+、Al3+对其光催化降解过程有明显的抑制作用。

The photocatalytic oxidation performance and kinetics of the simulated organic wastewater in a circulating slurry photocatalytic reactor was investigated.The effects of operation conditions, such as dosage of photocatalyst, illumination time, initial benzamide concentration, pH value, anions and cations in wastewater, on the photocatalytic oxidation performance were discussed.

采用循环式浆态光催化反应器对苯甲酰胺模拟废水光催化氧化特性和动力学进行了研究，系统地考察了操作条件对模拟污染物光催化降解的影响，并与搅拌式和鼓泡床式浆态光催化反应器中苯甲酰胺的降解效果进行对比。

The photodegradation rate of M-PPV 1 was constrained by DABCO that quenches the triplet state of M-PPV; 2increased when the solvent changed from benzene to deuterated benzene in whichthe lifetime of triplet state is longer than that in benzene; 3 was improveddramatically with high concentration of M-PPV triplet state was generated by energytrasfer from biacetyl.

发现：1能猝灭M-PPV的三重态的1，4-二氮二环[2.2.2]辛烷也能有效地抑制光氧化反应的进行；2能提高M-PPV三重态寿命的氘代溶剂也能使M-PPV光氧化降解速率加快，3丁二酮和M-PPV间的能量传递能够提高M-PPV三重态的浓度，这和丁二酮作三重态敏化剂敏化光氧化M-PPV时，M-PPV的光降解速率大大增加也是一致的。

Anoplophora glabripennis Motshulsky (Coleoptera: Cerambycidae) is one of the most destructive insect borers of poplar trees in China. In recent years millions of poplar trees were damaged to death or near death in"Three-North Area", which caused heavy losses economically, ecologically and socially. Through the study on host selecting behaviors and behavioral responses to plant volatiles of A.

中文题名光肩星天牛对寄主植物挥发性物质的行为反应及作用机理的研究副题名外文题名 Behavioral responses and mechanism of Anoplophora glabripennis to host volatile compounds 论文作者李建光导师尹伟伦骆有庆金幼菊教授学科专业植物学研究领域\研究方向植物与昆虫的关系学位级别博士学位授予单位北京林业大学学位授予日期2001 论文页码总数129页关键词森林病虫害光肩星天牛寄主选择挥发性物质馆藏号BSLW /2003 /S763 /6 光肩星天牛Anoplophora glabripennis是我国最重要的一种林木蛀干害虫。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。