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利用微环谐振腔中的光场关系实现了光学延时与色散补偿,并利用了Kerr效应来控制微环内相移的改变。文章给出了所设计器件的经过优化后的参数,可以在抖动-1 200ps/nm的色散补偿数值,同时每个信道的色散补偿带宽均>20GHz,满足DWDM（密集波分复用）系统的要求。整个结构的功耗较小,不超过1.2mW,响应速度快,完全光控,体积小便于集成。

Copyright of Journal of Soil & Water Conservation (1009-2242) is the property of Institute of Soil & Water Conservation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Urban Mass Transit is the property of Urban Mass Transit Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Diagnosis & Therapy on Dermato-venereology is the property of Dermatology Hospital of Southern Medical University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Soil & Water Conservation (1009-2242) is the property of Institute of Soil & Water Conservation and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Automobile Technology is the property of Automobile Technology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Zhejiang Electric Power is the property of Zhejiang Electric Power Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Water Treatment is the property of CNOOC Tianjin Chemical Research & Design Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Modern Preventive Medicine is the property of Modern Preventive Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Network & Information Security is the property of Beijing Xintong Media Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Clean Coal Technology is the property of Clean Coal Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power Engineering Technology is the property of Editorial Department of Electric Power Engineering Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BsHsp17.3 gene was isolated from Bletilla striata using homologous cloning and 3'RACE methods. In this study, the expression profiles of BsHsp17.3 under different stresses were analyzed and suitable conditions were explored for artificial cultivation of B. striata. The results were as follows: The opening reading frame of BsHsp17.3 was 453 bp, which encoded a 150-amino acid peptide. Its protein molecular weight and isoelectric point were 17.42 kD and 6.33. Phylogenetic analysis demonstrated that BsHsp17.3 was closed to the Hsp17.3 from Dendrobium catenatum. Quantitative real-time PCR analysis showed that the expression of BsHsp17.3 was different in leaf, root, bulb and flower of B. striata. The expression level of BsHsp17.3 gene was the highest in leaf and root,respectively, but was absent from the bulb and flower. The expression of BsHsp17.3 was analyzed by quantity RT-PCR under cold, hot and drought treatments. The results showed that the expression of BsHsp17.3 quickly induced by high temperature and cold, but drought stress simulated by 20% PEG did not regulate the gene expression. These results suggest that BsHsp17.3 may be involved in regulating sprout tumble of Bletilla striata. [ABSTRACT FROM AUTHOR]

The transmission gears of shearer's cutting unit are important components, which bear low-speed, heavy-duty, strong impact and vibration. Low speed heavy-duty gear is the easiest failure part and the 20CrMnTi steel is one of the most commonly used materials. In order to reproduce its service condition during practical production process and simplify the experimental model as well as calculate the experiment parameters, the wear fatigue failure mechanism of low speed heavy-duty gear was studied by M-2000A friction and wear instrument, which was combined with the real-time observation of dynamic topography and online temperature monitoring. At the same time, this experiment studied on the failure mechanism of the 20CrMnTi gear steel in rolling tribo-fatigue tests under different lubrication mediums and different lubrication conditions. It turned out that the lubrication effect of L-CKD320 oil was the best with the smallest friction coefficient, wear loss and friction temperature. On the contrary, the lubrication effect of L-CKD150 oil was the worst with the largest friction coefficient, wear loss and friction temperature. The main tribo-fatigue mechanisms were fatigue spalling under the L-CKD150 oil lubrication and were slight adhesive wear and fatigue pitting under the L-CKD320 oil lubrication. [ABSTRACT FROM AUTHOR]