查询词典 optical activity

When an optical fiber bundle was made of a large-core polymer optical fiber or a liquid-core optical fiber,the value of packing fraction was 100%.In the range of visible light or ultraviolet light,it is much more advantageous to choose an optical fiber bundle made of a large-core polymer optical fiber or a liquid-core optical fiber.

而单根粗直径聚合物光纤和液芯光纤配用圆形端套制作的光纤传光束，其敛集率为100%，在可见光或紫外光范围内，选用单根粗直径聚合物光纤或液芯光纤传光束具有更多的优势。

The results show the agglutinative activity, SOD activity, CAT activity and lysozyme activity in serum of Cyprians carpio increased in contrast to that of control group. The activity of fed lectin from Porphyra yezoensis group was 3.0, 0.8, 3.9 and 1.0 times, respedctively, as much as that of control group. The activity of fed lectin from Undaria Pinnatifida group was 1.0, 0.4, 3.0 and 0.7 times, respectively, as much as that of control group. The activity of infusing lectin from Undaria pinnatifida group was 3.0, 0.3 and 1.8 times, respectively, as much as that of control group. The activity of infusing lectin from Porphyra yezoensis group was 3.0 and 0.7 times, respectively, as much as that of control group.

实验结果表明，投喂和灌喂凝集素后，鲤血清中凝集素、超氧化物歧化酶、过氧化氢酶、溶菌酶活性与对照组相比都有提高，其中投喂条斑紫菜凝集素组比投喂对照组依次提高3.0倍、0.8倍、3.9倍、1.0倍；投喂裙带菜凝集素组比投喂对照组依次提高1.0倍、0.4倍、3.0倍、0.7倍，灌喂裙带菜凝集素组比灌喂对照组依次提高3.0倍、0.3倍、1.8倍；灌喂条斑紫菜凝集素组比灌喂对照组依次提高3.0倍、0.7倍。

The radical scavenging activity of Laminaria japonica pigments was studied by the DPPH2,2-Diphenyl~(-1-picrylhydrazylassay. The total pigments showed a strong DPPH radical scavenging activity of 65.819% with the concentration of 0.52mg.ml~(-1). The DPPH radical scavenging activity of fucoxanthin was 19.85% with the concentration of 0.27mg.ml~(-1). The antimicrobial activity of pigment in Laminaria japonica was studied by the method of round paper. The results showed that the pigment extracts have activity against Escherichia coli, Pseudomonas aeruginosa, Saricina flava and Saccharomyes cerevisia. The antibacterial activity of total pigments for Saccharomyes cerevisia was the strongest with an inhibition diameter of 18.9 mm; and the antibacterial activity of fucoxanthin for Saricina flava was also much significant with an inhibition diameter of 10.2 mm.

测定了它们对自由基的清除率和对四种细菌的抑菌效果，研究结果表明，总色素和褐藻黄素的浓度与自由基清除率成正比，当总色素浓度为0.52mg.ml~(-1)时，清除率达到65.819%，高于陆生植物黑米色素和紫甘薯色素；当褐藻黄素浓度为0.27mg.ml~(-1)时，自由基清除率达到19.85%，低于紫苏色素、紫甘蓝色素、黑米色素、紫甘薯色素；对大肠杆菌、绿脓杆菌、八叠球菌、金黄葡萄球菌的抑菌实验结果显示，海带总色素对金黄葡萄球菌的抑菌活性最强，抑菌圈直径为18.9mm；褐藻黄素对八叠球菌的抑菌活性相对较强，抑菌圈直径为10.2mm。

The activity of Carboxymethylcellulase rose and peaked on September 8, and then decreased; the activity of Pectinmethylesterase decreased before September 18 ( early and middle stage of maturity), and then rose to the peak value on September 28, and then decreased dramatically; the activity of Polygalacturonasewas lower before September 18, while its change was same as activity of PE after September 18; cellulose and protopectin of granulated juicy sac were higher than those of non –granulated juicy sac respectively, but activity of Cx, activity of PE and activity of PG of granulated juicy sac were lower than of non-granulated juicy sac respectively.

纤维素酶活性在成熟期间随果实成熟上升，到9月8日出现活性高峰后下降；果胶甲酯酶活性在成熟阶段前中期(9月18日)PE活性呈下降趋势，在9月28日出现PE活性高峰后快速下降，汁胞PG前中期活性较低，9月18日后的变化趋势和PE活性的变化一致。粒化汁胞的纤维素，原果胶含量均高于未粒化汁胞；它的CX活性、PE活性，PG活性低于未粒化汁胞。

The development of MEMS optical switches including electromagnetism driven mobile micro-switch, electrostatic driven optical switch, optical switch matrix of MEMS optical amplifying and spray-ink air bladder MEMS optical swith, wavelength selective switch, both at home and aboard is reviewed, and the structures, performances and fabrications of these components are analyzed.

介绍了目前国内外光纤通信系统中所涉及的电磁驱动移动式MEMS光开关、静电驱动式光开关、基于MEMS光大器的可扩展型光开关矩阵、喷墨气泡MEMS光开关、开环式1×N波长选择MEMS光开关。对这些器件的结构原理，制造方法及其性能指标作了分析。

The invention is a rotary image-free 45-degree scan optical system, and it includes a 45-degree scanning mirror, double-reflecting optical converging primary system, K mirror rotary image eliminating system and after optical system, where the rotary axis of the 45-degree scanning mirror coincides with the optical axes of the other three systems, composing its optical axis.

一种无像旋的45°镜扫描光学系统，该系统包括45°扫描镜、双反射光学会聚主系统、K镜消像旋系统和后光学系统，45°扫描镜的旋转轴与双反射光学会聚主系统、K镜消像旋系统和后光学系统的光轴重合，构成本光学系统的光轴。

The optical switches and optical switch arrays are the key devices in the optical cross-connect equipments and optical add and drop multiplexing equipments ,which are the important components in the all-optical network.

在全光网络系统中，光交叉连接设备与光分叉复用设备是其重要组成部分，而光开关与光开关阵列又是OXC与OADM的核心器件。

Five novel torsion-mirror optical actuators including double-beam thickness differential structure with single torsional axis, double flexible folded-beam structure with single torsional axis, double-beam vertical torsion comb structure with single torsion axis, four-beam differential compound-micromirror structure with double torsional axis and the combined structure of the four basis forms above, are brought forward. All of these devices could be fabricated by the same silicon micromachining process we have developed. The deformation compensation design with local enhancement for the thin torsional beam which is the key structure of these devices is also put forward to improve the reliability. The three-dimension solid model and two-dimension reduced order model of the torsion-mirror optical actuator are established and then the numerical simulations for evaluating the device characteristics of the statics, dynamics, electrostatic field, mechanical and electrostatic coupling, fluid and solid coupling are carried out to optimize the structure design. Furthermore, three optical fibre clamping structures which could be integrated monolithicly are designed and analyzed to improve the optical coupling capability. 4. Three flexible process flows combined with bulk silicon micromachining and surface silicon micromachining are brought forward to fabricate these novel single-crystal silicon or polysilicon torsion-mirror optical actuators by using the same lithography masks for both SOI wafer and regular silicon wafer. A series of important process experiments are carried out to optimize the process parameters and the process flows. Some novel and typical process phenomena which occurred during the microfabrication are analyzed and then the corresponding solutions are put forward. 5. A MEMS dynamic testing system which exploit blur image synthetic technique, stroboscopic image matching technique, stroboscopic mirau microscopic interferometry technique and microscopic laser dopper vibrometer technique is set up to measure three-dimension and six-freedom micro motions of any MEMS devices with nanometer resolution.

在对硅微机械扭转镜光致动器的光机电特性系统地理论研究的基础上提出了硅微机械扭转镜光致动器的结构设计准则。3、提出了单轴双梁厚度差分结构、单轴双柔性折叠梁结构、单轴双梁垂直扭转梳齿结构、双轴四梁差动复合微镜结构以及以上四种基本结构组合后的衍生结构等五种工艺加工技术兼容的新型的硅微机械扭转镜光致动器，对器件关键结构薄厚度、高耐疲劳扭转梁进行了局部加强的变形补偿设计，建立了器件的三维实体模型以及两维降阶模型，对提出的新结构硅微机械扭转镜光致动器进行了系统的静力学、动力学、静电场、力电耦合和流体固体耦合的建模仿真与优化设计，同时设计并分析了三种可实现单芯片集成的弹性光纤定位夹紧结构。4、提出了组合体硅微加工技术与表面硅微加工技术、兼容同一套光刻版图、可分别基于SOI 晶片和普通Si 晶片、适应于制造提出的各种新结构单晶硅和多晶硅硅微机械扭转镜光致动器的三套柔性加工工艺流程，开展了一系列重要工艺步骤的单项工艺试验，对工艺流程与工艺参数进行了优化，针对加工过程中出现的具有普遍意义的典型工艺问题进行了讨论和分析，并提出了解决方法。5、创新性地将模糊图像合成技术、频闪图像匹配技术、频闪Mirau 显微干涉技术与显微激光多普勒测振技术有机结合，建立起了一套周期运动测量与瞬态运动测量相结合、单点运动测量与全视场运动测量相结合、满足不同MEMS 器件各种动态测试要求的集成的MEMS 三维六自由度微运动精密测量系统。

In part one (chapter 2-3), two new methods and systems of optical parallel logic operation are studied. Triple-in Double-out shadow-casting logic operation system is proposed and realized for the first time. Based on this, optical full adder and 3-bit decoder array logic have been obtained. It is the first time to use coding pattern and different reading-writing model to realize BSO-PROM optical parallel logic operation where the time-order operation is avoided, so that the computing speed of optical parallel logic gate which uses this kind of spatial light modulator is increased, and it is successfully used in optical symbolic substitution .

在第一部分，对两种新的并行光学布尔逻辑运算方法及系统进行了研究：首次提出并实现了三输入、双输出铸影光学逻辑运算系统及其由此得到的光学全加器，并提出一种以此为基础的3-比特译码器阵列逻辑，首次利用图形编码和不同的读写模式实现了无时序操作的BSO-PROM光并行逻辑运算，大大提高了这种空间光调制器用作光并行逻辑门的运算速度，使之成功地用于光学符号代换之中。

Optical pickup is one of the kernels of optical storage industry. It is used for all kinds of optical storage systems widely. It consists of optical collimator system, optical focusing system, servo error signal generating system and the enforce element of servo system .

中文题名DVD光学读取头关键技术研究副题名外文题名 On key technology of DVD pickup 论文作者王继平导师阮玉学科专业物理电子学研究领域\研究方向学位级别博士学位授予单位华中科技大学学位授予日期2003 论文页码总数173页关键词DVD 光学读取头光盘光存储馆藏号BSLW /2003 /TQ597 /2 光学读取头是光存储产业的核心器件，它广泛应用于各类光存储设备中。

It's not quite as simple as that.

并没有那么容易。

It debuted in 1992 in Japan and the United Kingdom, and 1993 in the United States.

它首次亮相于1992年在日本和英国，在美国1993年。