Based on two kinds of control strategies of VSR under unbalanced grid condition,the introduction of a new VSR control strategy featuring undamped -oscillation that simplifies the controller structure and effectively improves VSR"s performance under unbalanced grid condition.· A systematic description of the state switching in trilogic PWM signal generation of three-phase CSR by using the conversion between bilogic and trilogic switching functions.· Referenced to the CSR"s trilogic PWM signal generation, an approach to achieve low-stress natural commutation of switching devices by reshuffling the vector composition sequence, resulting reduced switching loss.

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Referenced to the CSR's trilogic PWM signal generation, an approach to achieve lowstress natural commutation of switching devices by reshuffling the vector composition sequence, resulting reduced switching loss. With the background of and well instanced by the Xinjiang Autonomous Region's Key SciTech Project"Solar Photovoltaic grid-connected inverter", the dissertation work implemented the new approach of a grid-connected PV inverter that was of single-phase VSR topology and with MPPT .

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The final experiments shows that TRI P+P algorithm can not only deal with the sequential circuits containing only 2-valued element but can also deal with the sequential circuit containing both 2-valued elements and tristate elements efficiently.

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Flow cytometric analysis showed that after mock infection, Ad5null infection, and Ad5hSeFT infection, the mean fluorescence intensity values for the binding of Ulex europaeus Ⅰ lectin to NIH3T3 cells were 2. 3±0.6, 2. 1±1. 0, and 36. 5±5. 9, respectively; MFI values for the binding of Griffonia simplicifolia isolectin B4 (GS-IB4) lectin to NIH3T3 cells were 167±23, 170±19, and 100±14, respectively; MFI values for the binding of human natural IgG and IgM antibodies to NIH3T3 cells were 31±3, 32±4, and 22 ±4, respectively.

流式細(xì)胞分析結(jié)果表明，小鼠NIH3T3細(xì)胞及分別被Ad5null和Ad5hSeFT轉(zhuǎn)導(dǎo)的NIH3T3細(xì)胞国产免费一级毛卡片AAAAA级，UEA-1凝集素結(jié)合細(xì)胞的平均熒光強(qiáng)度值分別為2.3±0.6黄色网站在线免费。观看、2.1±1.0和36.5±5.9；GS-〓凝集素結(jié)合細(xì)胞的MIF值分別為167±23一级毛片网站在线观看、170±19和100±14：人天然IgG和IgM抗體結(jié)合細(xì)胞的MFI值分別為31±3国产三级盗摄视频、32±4和22±4。

Results L* in pat of opaque and body become decrease and a*,b* become increase generally with the increase of each group of color guide stage,then a*欧美性爱黄片小视频、b* of incisor translucent and cervical increase tendency unapparently.

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Here, a recognition method is made by the statistical skewness analysis. It can effectively judge the uncancelled wild values existing and then clear out them by adjusting the wild detecting threshold.

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The crucial procedure of contour detection for microscopic image of sprayed droplets and measurement of granularity is to segment droplets from background by producing binary images. The singular threshold is uneffective because the image is very different in illumination. In this paper, a fast maximum entropy image thresholding algorithm based on local gray feature is presented to exact sprayed droplets from background and preserve contours of droplets.

霧滴圖像的顆粒提取與測量關(guān)鍵是分割出霧滴與背景色色色网址免费，生成二值圖像，由于霧滴圖像光照不均勻亚洲色全情网站大全，用單一閾值無法兼顧亮區(qū)與暗區(qū)99热这里只有精品免费观看，本文提出了一種基于局部灰度特性快速最大熵動態(tài)閾值選擇算法分割出霧滴微粒并提取霧滴輪廓。

The article first theoretically analyzes the principle that microcavity reduces threshold 免费黄色看直接网站、changes resonant modes of output light and enhances unidirection of the random laser.Then study the structure parameters of different microcavity by transfer matrix.Based on the theory of Maxwell equations and the rate equations, analyze the principle that microcavity reduces the threshold by FDTD method: Changing the confined position,reducing relaxation time and increasing reversing particles, also simultaneously study the influences of the threshold and output light modes by different microcavities and random intensity of random medium.

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The effective concentration of added Ni causing 50% inhibition（EC50）ranged from 11 to 932mg·kg-1 in leached soils which were leached using artificial rain water, and from 7 to 2055mg·kg-1 in unleached soils for the tomato test, respectively, and the ratios of maximum to minimum of EC50 for leached soils and unleached soils were 85 and 294. Soil pH was the main factor controlling the toxicity of Ni in these soils.

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The second part was to test the appearance, ingredient analysis, surface potential, thermal conduction properties, and magnetism of the nano composite fluid prepared from the parameters. The experiment found that unoxidized particles, Ag, Cu, Fe, and Ni appeared round. If combined with oxygen in water as oxides, the nano particles would grow toward certain directions. In copper/iron nano composite fluid, FeO appeared cubic, Cu2O appeared coniferous. In silver/iron nano composite fluid, FeO was polygonal. In dielectric potential detection, the nano composite fluid was likely to aggregate and deposit, except for silver/iron set. In other sets, the pH of silver/cobalt nano composite fluid was 7, surface potential was 21.21mV; the pH for silver/nickel nano composite fluid was 6.5, surface potential was 21.04mV; the pH for copper/iron nano composite fluid was 7, surface potential was -30mV. The fluid particles of the three sets could all maintain suspension of 2 weeks or more. For thermal conduction, the silver/nickel, nano composite fluid showed the best thermal conduction. Under temperature of 30℃ fluid weight conduction of 0.4%, the thermal conduction increase was 26%. For magnetic detection, except for silver/iron nano composite fluid, the nano particles of other three sets were paramagnetic, and all four sets were soft magnetic nano composite materials.

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