光敏作用

Choose the 890nm infrared LED as the light source after compared the capabilities of incandescent lamp/tungstic lamp and LED/LD and also think about the selective absorbability of water; it has strong points such as constant light intensity,long life, narrow light spectrum,etc, and use the infrared light with 890nm wavelength to decrease the influence of optical-absorption matters.Choose the photosensitive diode which suitable to the LED which we choosed after compare the capabilities of light sensitive resistor, photocell, photosensitive diode and phototriode. Both of these make up the photoelectric system of turbidimeter.

通过比较白炽灯／钨灯和发光二极管／激光二极管的各项性能指标，考虑到水对光线具有选择性吸收作用，选择890nm的红外发光二极管作为浊度仪的发光器件，其有发光光强稳定、寿命长、发光光谱窄等优点，且用波长大于800nm的红外光进行测量可以大大减小水中光吸收物质的影响；通过对光敏电阻、光电池、光敏二极管和光敏三极管等光敏器件的各项性能的分析与比较，选择响应时间短、输出特性线性度好的光敏二极管作为光接收器件，并与红外发光二极管相配套，构成浊度仪工作的重要系统——光电系统。

The scope includes: Bioluminescence, chronobiology, DNA repair, environmental photobiology, photocarcinogenesis, photochemistry of biomolecules, photomedicine, photomorphogenesis, photomovement, photoreception, photosensitization, photosynthesis, phototechnology, spectroscopy of biological systems, UV and visible radiation effects and vision.

该杂志出版的范围涵盖：生物发光、时间生物学、DNA修复、环境光生物学、光致癌过程、生物分子光化学、光医学、光形态发生、光运动、感光、光敏作用、光合作用、光学技术、生物系统光谱学、紫外线和可见光效应及其显示等。

It was concluded that the photosensitization of PPa in liposomal media was different from that in homogeneous systems.

这揭示，PPa在非均相脂质体体系中的光敏作用有别于均相体系，具有新特征。

The structure, photosensitization of phycocyanin and the principles of photodynamic therapy were mainly reviewed.

本文阐述了藻蓝蛋白的结构、光动力疗法的原理和藻蓝蛋白光敏作用的研究进展，并介绍了藻蓝蛋白在光动力疗法中的应用现状与前景。

Causes photosensitization in human.

引起人的光敏作用。

In conjunction with experimental data and curve fit, we can obtain the relative rate constants of various paths of type Ⅰ and Ⅱ mechanisms in photosensitization.

结合实验数据和曲线拟合，可求得光敏作用过程中Ⅰ、Ⅱ型机制各反应历程(产生〓O〓、〓及PQP·〓)的相对速率常数。

It was found that 〓 and 〓 are all the important intermediate species in both solutions and DNA complexes, moreover, the quantum yield of 〓 is competitive to that of 〓 These results suggest that the photosensitization of AMD proceeds via both type Ⅱ and type Ⅰ mechanisms.

这些实验结果说明，放线菌素D的光敏作用是通过能量转移和电子转移两种反应途径进行的。

This suggests that the membrane is the target of photodamage and the free redicals of lipids produce by HA photosensitization is probably the important factor that initiates the damage of DNA and causes cell death finally.

实验还表明HA加上光照后对细胞具有明显的杀伤作用，使细胞存活率显著降低，提示HA光敏作用靶部位是细胞膜，而引发的脂自由基等产物可能是诱导DNA等损伤，最终导致细胞死亡的重要因素。

A dye recycled photosensitization system has been designed. As a result of studies in the mechanism of electron transfer reaction of xanthene iodonium salt, it is proposed that the dye-recycled process consists of three-step reactions during the photosensitization: The oxidative fading product of dye is formed through electron transfer under irradiation; In the presence of H-donor, product changes into acidic leuco dye product; Product undergoes deprotonization under action of base to regenerate initial dye.

本文设计了染料循环再生的光敏反应体系，通过对占吨碘翁盐电子反应机制的深入研究，提出了占吨染料在光敏反应过程中的染料再生循环，它依次由三个反应过程组成：在光作用下，通过电子转移反应，产生染料氧化褪色体；在H给体存在下，通过H转移反应，使产物转化为染料酸式隐色体；在碱作用下，发生去质子反应，染料再生回复到染料的起始结构。

This will be useful to elucidating the photosensitizing mechanisms of chlorins in photodynamic therapy of cancer.

这对阐明二氢卟吩类衍生物抗肿瘤的光敏作用机制有重要科学价值。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。