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Interference at the single-photon level based on silica photonics robust against channel disturbance

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Photonics Research 2021年第2期9卷 222-228页

作者： XIAO LI meizhen ren JIASHUN ZHANG LIANGLIANG WANG WEI CHEN YUE WANG XIAOJIE YIN YUANDA WU JUNMING AN State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Division of Quantum Materials and Devices Beijing Academy of Quantum Information SciencesBeijing 100193China Laboratory of Quantum Information CASUniversity of Science and Technology of ChinaHefei 230026China

Quantum key distribution(QKD) provides a solution for communication of unconditional security. However,the quantum channel disturbance in the field severely increases the quantum bit-error rate, degrading the performance of a QKD system. Here we present a setup comprising silica planar light wave circuits(PLCs), which is robust against the channel polarization disturbance. Our PLCs are based on the asymmetric Mach–Zehnder interferometer(AMZI), integrated with a tunable power splitter and thermo-optic phase modulators. The polarization characteristics of the AMZI PLC are investigated by a novel pulse self-interfering method to determine the operation temperature of implementing polarization insensitivity. Over a 20 km fiber channel with 30 Hz polarization scrambling, our time-bin phase-encoding QKD setup is characterized with an interference fringe visibility of 98.72%. The extinction ratio for the phase states is kept between 18 and 21 d B for 6 h without active phase correction.

关键词： polarization channel interferometer

SiO/CNTs:A new anode composition for lithium-ion battery

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Science China Chemistry 2009年第12期52卷 2047-2050页

作者： ren YuRong1,2,3?,QU meizhen1 & YU ZuoLong1 1 Chengdu Institute of Organic Chemistry,Chinese Academy of Sciences,Chengdu 610041,China 2 College of Chemistry,Jilin Normal University,Siping 136000,China 3 Graduate University of Chinese Academy of Sciences,Beijing 100039,China Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu China College of Chemistry Jilin Normal University Siping China Graduate University of Chinese Academy of Sciences Beijing China

A new anode composition SiO/CNTs (carbon nanotubes) has been prepared by chemical vapor deposition (CVD) method. The results of scanning electron microscopy (SEM) confirm that CNTs deposit on small SiO particles,form a cage,and enwrap SiO particles tightly. SiO/CNTs anode composition exhibits an initial discharge and charge capacity of 1171 and 789 mAh/g,and maintains a reversible capacity of 500 mAh/g after 80 cycles. The improvement of the cyclic performance for SiO/CNTs composition is related to the maintaining of the electric network during cycling,which benefits from a tight contact between CNTs and SiO particles.

关键词： SiO/CNTs CVD composition anode Li-ion battery

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抓斗钢丝绳绳端开放式楔板连接法

港口装卸 2000年第1期 18-19页

作者：任美珍胡新民南昌铁路局宜春车务段南昌336000

钢丝绳与抓斗连接多采用绳卡固定法.它有诸多不便:1)开闭斗绳的6个绳卡在抓斗上承梁内腔,不便检查紧固.抓斗使用一段时间后,钢丝绳直径缩小,绳卡必然松弛,钢丝绳抽动,6个绳卡(3个一组)挤在一起,钢丝绳松散变形.

关键词：港口抓斗钢丝绳绳卡固定开放式楔板连接

基于模糊逻辑的直驱式海浪发电系统最大功率跟踪控制

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太阳能学报 2021年第6期42卷 21-28页

作者：潘海鹏丁海波雷美珍顾敏明任佳浙江理工大学机械与自动控制学院杭州310018

针对传统扰动观察法在海浪发电系统应用中存在响应速度慢和最大功率点附近振荡等问题,提出基于模糊逻辑控制的最大功率跟踪控制算法,实现海浪发电系统最大功率跟踪。以永磁同步直线电机作为海浪发电机,建立发电机数学模型;在规则海浪激... 详细信息

针对传统扰动观察法在海浪发电系统应用中存在响应速度慢和最大功率点附近振荡等问题,提出基于模糊逻辑控制的最大功率跟踪控制算法,实现海浪发电系统最大功率跟踪。以永磁同步直线电机作为海浪发电机,建立发电机数学模型;在规则海浪激励下,建立发电系统动力学模型,分析发电机输出功率与发电系统阻尼之间的相关特性。在Matlab/Simulink环境下搭建仿真模型,并与传统扰动观察法在海浪发电中的应用进行仿真对比分析。结果表明,所提出的基于模糊逻辑控制算法具有更好的响应速度和鲁棒性。

关键词：波能转换最大功率点跟踪模糊逻辑永磁同步直线发电机功率捕获

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南方水稻黑条矮缩病空间分布型及抽样技术

植物保护 2014年第1期40卷 131-133页

作者：陈观浩梁盛铭任惠陈梅珍广东省化州市病虫测报站化州525100 广东省茂名市植物保护站茂名525000

为了探讨南方水稻黑条矮缩病空间分布型及抽样技术,为该病害的准确抽样调查和有效防治提供依据,选取13块稻田逐丛调查资料,应用聚集度指标法、Iwao法和Taylor幂法则,研究了广东西南部南方水稻黑条矮缩病在稻田的空间分布型和抽样技术。... 详细信息

为了探讨南方水稻黑条矮缩病空间分布型及抽样技术,为该病害的准确抽样调查和有效防治提供依据,选取13块稻田逐丛调查资料,应用聚集度指标法、Iwao法和Taylor幂法则,研究了广东西南部南方水稻黑条矮缩病在稻田的空间分布型和抽样技术。结果表明,南方水稻黑条矮缩病病丛空间分布格局随着病丛密度的提高逐步从聚集型向均匀型演变发展。m*-m回归分析表明病丛空间分布的基本成分是个体群,个体间相互吸引,个体群的空间分布型为均匀分布。Taylor幂法则分析表明,南方水稻黑条矮缩病病丛个体的空间分布随着病丛密度的提高而趋向均匀分布。根据南方水稻黑条矮缩病病丛以均匀为主的空间分布特性,田间抽样调查以采用五点或对角线法等较宜。在此基础上提出了理论抽样数:n=(1.96)2/D2(1.287 1/珚x+0.079 9)。

关键词：南方水稻黑条矮缩病空间分布型抽样技术

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新型偏心啮合盘元件的混沌混合特性

工程塑料应用 2020年第3期48卷 83-91页

作者：沈美震任建民朱向哲李万旭辽宁石油化工大学机械工程学院辽宁抚顺113001 中国石油天然气第八建设有限公司辽宁抚顺113006

在双螺杆挤出机中引入偏心圆啮合盘元件,分析了新型啮合盘元件偏心圆啮合盘元件的压力场、速度矢量场、剪切速率场和混合指数场。同时比较了其在不同错列角和偏心距下的对数拉伸率、最大剪切速率、停留时间分布、分布指数和分离尺度。... 详细信息

在双螺杆挤出机中引入偏心圆啮合盘元件,分析了新型啮合盘元件偏心圆啮合盘元件的压力场、速度矢量场、剪切速率场和混合指数场。同时比较了其在不同错列角和偏心距下的对数拉伸率、最大剪切速率、停留时间分布、分布指数和分离尺度。结果表明,偏心圆啮合盘元件轴向和周向压力梯度较大,两转子棱峰之间区域流动性较好。偏心圆啮合盘元件的轴向间隙和螺棱顶隙为其提供了良好的剪切能力。偏心搅拌提供了较强的拉伸作用,增强了其拉伸折叠效果,从而使其具有较好的混沌混合能力。对比不同的几何参数发现错列角为60°和偏心距为5 mm的啮合盘元件拥有较好的分散混合性能和分布混合性能。通过粒子可视化及其混合特性曲线分析,为深入了解偏心搅拌提供了理论依据。

关键词：偏心圆啮合盘元件双螺杆挤出机混沌混合数值模拟

Regulation of T lymphocyte development and homeostasis by Aurora-A

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Regulation of T lymphocyte development and homeostasis by Au...

Phase Ⅲ Clinical Trials of the Cell Differentiation Agent-2 （CDA-2）： Therapeutic Efficacy on Breast Cancer, Non-Small Cell Lung Cancer and Primary Hepatoma

第十四届全国免疫学学术大会

作者： Sijia Gao Shuai Pan Yanbiao Shi meizhen Xu RuiXue Bai Jinfeng ren Hui Wang Xuzhou Medical University

The serine/threonine kinase Aurora-A plays a crucial role in controlling cellular division and has been implicated to contribute to tumorigenesis.Multiple cancer clinical trials have reported suppression of peripheral lymphocyte counts by treatment with Aurora-A inhibitor,indicating a possible role of Aurora-A in regulating lymphocytes activity.Our lab has recently reported that ablation of Aurka inhibits the development and homeostasis of B lymphocyte.Although it has been shown that Aurora-A regulates T lymphocyte activation by controlling LCK phosphorylation,its role in regulating the biology ofT lymphocytes remains to be further elucidated.Hence,we in the present study generated T cell specific Aurka knockout mice,namely LckAurka mice and CD4Aurka mice,which had Aurka deleted at the stage of double negative(DN) 3 and double positive(DP),respectively.Deletion of Aurka in LckAurka mice led to a significant reduction of DN3 and DN4 thymocytes in the thymus while no change of thymocyte development in CD4Aurka mice.Further analysis revealed reduced CD4and CD8T lymphocytes in secondary lymphoid organs from both LckAurka and CD4Aurka mice.Moreover,this reduction was associated with loss of naive CD4and CD8T lymphocytes.In addition,increased apoptosis of DN thymocytes and naive CD4T cells from LckAurka mice was observed upon in vitro stimulation with IL-7.Our results indicate that Aurora-A might regulate T cell development at the DN stages and T cell homeostasis through acting downstream of IL-7 signaling pathway.

关键词： Aurora-A lymphocyte development peripheral homeostasis

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Chinese Journal of Clinical Oncology 2005年第4期2卷 706-716页

作者： Fengyi Feng Qing Lu Changquan Ling Yang Zhang Fengzhan Qin Huaqing Wang Wenxia Huang Shunchang Jiao Qiang Chen Mingzhong Li Yunzhong Zhu meizhen Zhou Jun ren Yetao Gao Jingpo Zhao Rongsheng Zheng Wenhua Zhao Zhiqiang Meng Fang Li Qizhong Zhang Dongli Zhao Liyan Xu Yongqiang Zhang Yanjun Zhang Zhenjiu Wang Shuonqi Liu Ming C. Liau The Cancer Hospital of the Chinese Academy of Medical Science Beijing 100021 China Changhai Hospital of the Second Army Medical University Shanghai 200433 China The Second Affiliated Hospital of Dalian Medical University Dalian 116027 China The Cancer Hospital of Bengbu Medical College Bengbu 233004 China The Cancer Hospital of Tianjin Medical University Tianjin 300060 China The Affiliated Cancer Hospital of Fudan Medical University Shanghai 200032 China The General Hospitalof PLA Beijing 100835 China The Cancer Hospital of Fujian Province Fuzhou 350014 China The First Affiliated Hospital of Xi＇an Communication University Xi＇an 710061 China Beijing Chest Cancer Hospital Beijing 101149 China Department of Health Beijing Hospital Beijing 100730 China Xijing Hospital of the Fourth Military Medical University Xi＇an 710033 China Everlife Pharmaceutical Company Hefei 231202 China Institute of Pharmaceutical Chemistry China Medical University Taichung 404 Taiwan

OBJECTIVE The objective of this study was to explore the effect of CDA-2, a selective inhibitor of abnormal methylation enzymes in cancer cells, on the therapeutic efficacy of cytotoxic chemotherapy.METHODS Advanced cancer patients, all of whom had previously undergone chemotherapy, were randomly divided into 2 groups, one receiving chemotherapy only as the control group, and the other receiving CDA-2 in addition to chemotherapy as the combination group. The therapeutic efficacies and the toxic manifestations of the 2 groups were compared based on the WHO criteria.RESULTS Of 454 cancer patients enrolled in phase Ⅲ clinical trials of CDA-2, 80, 188, and 186 were breast cancer,NSCLC, and primary hepatoma patients, respectively.Among them 378 patients completed treatments according to the protocols. The results showed that the overall effective rate of the combination group was 2.6 fold that of the control group, 4.8 fold in the case of breast cancer, 2.3 fold in the case of primary hepatoma, and 2.2 fold in the case of NSCLC. Surprisingly, the combination therapy appeared to work better for stage Ⅳ than stage Ⅲ patients. CDA-2 did not contribute additional toxicity. On the contrary, it reduced toxic manifestations of chemotherapy, particularly regarding white blood cells, nausea and vomiting.CONCLUSION Modulation of abnormal methylation enzymes by CDA-2 is definitely helpful to supplement chemotherapy. It significantly increased the therapeutic efficacy and reduced the toxic manifestation of cytotoxic chemotherapy on breast cancer and NSCLC.

关键词：临床实验细胞区别因子-2 乳腺癌非小细胞肺癌原发性肝细胞癌

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杜仲叶及其提取物在养猪生产中的应用

养猪 2022年第2期 15-18页

作者：任慧波邱光勇邱美珍刘莹莹李华丽朱吉杜丽飞湖南省畜牧兽医研究所湖南长沙410131 绥宁县良水冲生态种养专业合作社湖南邵阳422604

杜仲叶资源丰富,富含多种营养成分和生物活性成分。杜仲叶及其提取物可改善猪的生长性能、繁殖性能、肉品质及免疫力等。文章就杜仲叶及其提取物的主要成分、功能及在养猪生产中的应用进行综述。

关键词：杜仲叶提取物功能养猪生产