光

If under ideal conditions, one electron-hole pair injected yields one blue photon and the quantum efficiency of the phosphor equals one, the numbers of electron-hole pair must equal to the numbers of white photons. So LW white LED radiation power output has to consume 1.51 W electric powers and the luminous flux efficiency limitation of electrical to optical conversion for the white LED is 197.8lm/W at above condition.

在理想情况下，注入一个电子－孔穴对产生一个蓝光光子，设荧光粉的量子效率为1，因此，注入的电子－孔穴对数亦等于白光光子数，进而计算出白光LED每辐射1W的光功率所需的电功率为1.51W，上述白光LED发光光谱对应的白光LED的电－光转换的理论极限流明效率为197.8lm/W。

The result showed that the luminous flux for LW white LED radiation power output is 298.7 lm and the total photons are 2.7×1018. If under ideal conditions, one electron-hole pair injected yields one blue photon and the quantum efficiency of the phosphor equals one, the numbers of electron-hole pair must equal to the numbers of white photons.

在理想情况下，注入一个电子-孔穴对产生一个蓝光光子，设荧光粉的量子效率为1，因此，注入的电子-孔穴对数亦等于白光光子数，进而计算出白光LED每辐射1 W的光功率所需的电功率为1.51 W，上述白光LED发光光谱对应的白光LED的电-光转换的理论极限流明效率为197.8 lm/W。

In the first part, we report the application of a set of parallel dual tweezers, one stationary and one movable, to trap a polystyrene bead (suspended in de-ionized water) and drag it away from one of the trap centers beyond the linear (Hooke's spring) regime, to probe the nonlinear optical force constants associate with the optical trap.

在第一部分，我们建立了一个包含一道不动雷射光与一道可动雷射光的平行双道光钳，由此光钳钳住并移动悬浮於去离子水中的聚苯乙烯小球，使小球与其中一道光钳中心的距离远超出光钳的线性范围，来探讨光钳的非线性效应。

In this paper, several methods are put forward, by which axial resolution of scan microscope could be improved. One is that detecting method of ordinary laser feedback is improved, the orthogonal polarized lights split by Wollaston prism are detected separately, comparing to the ordinary feedback, the axial resolution is improved about 2.9 times.

提出并实验研究了几种可以提高激光反馈扫描显微镜轴向分辨率的方法，一种方法是对常规激光反馈实验中的探测技术进行了改进，用渥拉斯顿棱镜把垂直偏振光分开探测，轴向分辨率可以提高约 2 9倍；另一种方法是用双频激光器中产生的偏振态相互垂直的o光和e光作为反馈光代替了传统的单一光的反馈，轴向分辨率被提高了约 2倍；第三种方法是用双频激光器中产生的o光或e光作为反馈光，轴向分辨率可以提高约 2 5倍。

The results are as follows:(1) The relative spectrum sensitivity of the two kinds of compound eyes were similar, both were most sensitive to wavelength of 562nm, and also sensitive to wavelength of 400nm、483nm;(2) The absolute sensitivity curves to these three kinds of sensitive light of the two kinds of compound eyes were similar, all increase with the increment of luminance strength, but the compound eyes of corn borer had stronger response to wavelength of 562nm and 483nm;(3) The two kinds of compound eyes showed similar absolute sensitivity curves to white light, however, showed different sensitivity to light at different time or under different adaptative state.

结果如下：（1）二者具有相似的光谱反应曲线，均对562nm的光最敏感，另外对400nm、483nm光也较敏感；（2）二者对这三种敏感光的光强度曲线近似，在一定范围内均近似线性递增，但玉米螟复眼ERG在562nm和483nm下具有更高的反应幅度；（3）二者对白光的光强度曲线也近似，但随复眼适应状态及测试时间的不同，表现出不同的光敏感性。

The results showed that (1) The grain size of nanometer YiO_2 was40～80nm.The wavelength corresponding to the maximum absorbency values were observedin the 200～320nm range.The crystal structure of carbon doped TiO_2 photocatalyst is primarilyanatase(22.43% rutile), and the content of carbon is about 4.6%.(2) The relative humidityvaring from 8% to 80%, the photocatalytic degradation degree of benzene increased withincreasing relative humidity; and to toluene, degradation rate was hanced by relative humidityup to 60%, and more or less inhibited above 60%.(3) Scheme and results of orthogonal testswere used by evaluating the photocatalytic performance of the gas phase methanol, acetoneand 1-heptane.The results revealed that their degradation degree reached 84.5%, 93.39% and93.45%, respectively.(4) The 254nm UV lamp showed higher photocatalytic degradation rate.For methanol, acetone and 1-heptane, it was found that photocatalytic degradation reactionoccurs with the light strength of daylight lamp.(5) Under the the same conditions, 15%degradation degree has been obtained for benzene, whilst about 10% degradation degree wasattained by Degussa P25; During the initial phases, the toluene revealed higher photocatalyticactivity, comparing with Degussa P25, the degradation degree of methanol, acetone and1-heptane were slightly lower.

结果表明：(1)CVD法制备的纳米TiO_2光催化剂，颗粒球形度好、粒径在40～80nm之间；最大吸光度值所对应的波长为200～320nm；含碳量约为4.6％；晶型组成主要为锐钛矿型，金红石的含量约为22.43％；(2)在相对湿度为8％～80％范围内，苯的光催化降解率随着相对湿度的增大而增大；甲苯在相对湿度为60％时达到最好降解效果，当相对湿度增大到80％时光催化效果降低；(3)将正交实验设计及实验方案应用于气相甲醇、丙酮和正庚烷光催化降解研究，实验结果表明：三者最高降解率分别为84.5％、93.39％和93.45％；(4)有254nm紫外灯参与的光催化实验可以大大提高有机气体的光催化降解率；在日光灯的照射下，掺碳纳米TiO_2对气相甲醇、丙酮和正庚烷具有一定的光催化氧化能力；(5)较P25粉，在相同的光催化操作条件下：气相苯的平均降解率达15％，高于P25粉10％的降解率；气相甲苯在初始阶段具有较高的反应速率；气相甲醇、丙酮和正庚烷的降解率略低于P25粉。

Operation principle of the 2×2 and 4×4 optical switches based on the two-facet reflective mirrors and micro electromagnetism actuator is introduced; N×N optical switch matrixes consisting of the 2×2 and 4×4 optical switches are designed based on Benes networking; the rearrangeable non-blocking feature of 4×4, 8×8 and 16×16 optical switch matrixes and their routing algorithm are analyzed by using the principle invented by Euler in Knigsberg Bridge Problem.

介绍了使用双面反射镜的2×2， 4×4光开关的集成光路设计和工作原理；采用Benes网络，以2×2和4×4光开关为基本单元的N×N光开关器件的整体结构，并根据&一笔画&原理，分析了4×4， 8×8和16×16光开关矩阵的可重排无阻塞特性和光开关矩阵的光路选择算法。

Optical switch is the key element of all optical network. MEMS optical switch arrays, which can achieve small insertion loss, low cross talk and large switching contrast, are going to be the key considerations in the optical cross connectors and optical add/drop multiplexers for optical networking.

光开关是全光交换的关键器件，MEMS光开关由于具有潜在插入损耗和串扰低、消光比高等诸多优点而成为光网络中光交叉连接和光分插复用器的主流器件。

Using a dedicated high-precision polishing machine will be take high-tech nano-anti-fouling agents dripping polished surface, through repeated pressure grinding head polishing rinding ,polishing let's anti-fouling agents to be better to penetrate into the pores polished internal completely blocked pores polished and micro-cracks, to become the special, continuous nano-membrane, so that polished surface to prevent invasion of the functions of all pollutants, stains with the clean water can touch off; At the same time ,higher gloss, reached 90 degrees Celsius, and has the following outstanding performance

采用一种专用的高精度抛光机将高科技纳米防污剂滴到抛光砖的表面，通过抛光磨头的反复施压，打磨，抛光，将防污剂更好地渗透到抛光砖的毛孔内部，完全堵塞了抛光砖的毛孔及微裂纹，形成一种特殊的，连续的纳米膜，从而是抛光砖表面具有阻止一切污染物入侵的功能，污渍用水一抹就干净；同时光泽度更高，达到90度以上，并具有以下有一的性能

It is confirmed that under the illumination of light the dark-adaptedBR is quickly turned into the light-adapted, and undergoes a photo-chemical cycle then through a sequence of intermediates of J, K, L,comes into a more stable intermediate-M state. M state relaxes to B state in about one hour. B state converts completely into D state after 24 hours. B state initiates the photochemical cycle under illumination, while it can transform into D state in the dark. So B state is a key intermediate in the BR photochemical cycle.

实验证实，样品受光照激发后很快从暗适应型经过光适应型进入光循环，经过一系列的光化学中间体到达较稳定的M态。M态经过约1小时热驰豫完全回到光适应型B态，B态再经过24小时缓慢热驰豫完全回到暗适应型D态。B态受光则进入光循环，不受光则转化为D态，从而认为B态是菌紫质光循环路径中一个重要的分支节点。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了