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A Single-Fundamental-Mode Photonic Crystal Vertical Cavity Surface Emitting Laser

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Chinese Physics Letters 2010年第2期27卷 100-102页

作者：解意洋徐晨阚强王春霞刘英明王宝强陈弘达沈光地 Beijing Photoelectronics Technology Laboratory Beijing University of Technology Beijing 100124 State Key Laboratory of Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Beijing 100083

Single-fundamental-mode photonic crystal （PhC） vertical cavity surface emitting lasers （VCSEL） are produced and their single-fundamental-mode performances are investigated and demonstrated. A two-dimensional PhC with single-point-defect structure is fabricated using UV photolithography and inductive coupled plasma reactive ion etching on the surface of the VCSEL＇s top distributed Bragg-reflector. The PhC VCSEL maintains single-fundamental-mode operating with output power 1.7 mW and threshold current 2.5 mA. The full width half maximum of the lasing spectrum is less than 0.1 nm, the far field divergence angle is less than 10° and the side mode suppression ratio is over 35 dB. The device characteristics are analyzed based on the effective index model of the photonic crystal fiber. The experimental results agree well with the theoretical expectation.

关键词： Optics quantum optics and lasers

临近空间慢速平台SAR结合运动补偿的SCFT算法

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系统工程与电子技术 2008年第10期30卷 1869-1873页

作者：王晓峰董臻梁甸农国防科学技术大学电子科学与工程学院湖南长沙410073

针对临近空间慢速平台SAR轨迹运动偏差的空变性进行了分析。在二维频率域利用系统传输函数(STF)和变尺度傅里叶变换(SCFT)处理算法有效补偿了距离迁移和关于快时间波数的高阶相位,指出在运动补偿过程中,可将轨迹运动偏差分解成空不变项... 详细信息

针对临近空间慢速平台SAR轨迹运动偏差的空变性进行了分析。在二维频率域利用系统传输函数(STF)和变尺度傅里叶变换(SCFT)处理算法有效补偿了距离迁移和关于快时间波数的高阶相位,指出在运动补偿过程中,可将轨迹运动偏差分解成空不变项和空变项。在二维频率域,结合一阶、二阶运动误差补偿的方法,提出了临近空间慢速平台SAR结合运动补偿的SCFT处理算法。最后,通过计算机仿真,验证了本算法的正确性。

关键词：临近空间慢速平台合成孔径雷达系统传输函数 SCFT处理算法运动补偿二次距离压缩距离单元徙动

Protection role of resveratrol against alcohol-induced heart defect in zebrafish embryos

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Chinese Medical Journal 2019年第8期132卷 990-993页

作者： Feng wang Jia Lin Jing Jian You-Hua wang Ning Guo qiang Li Translational Medical Center for Development and Disease Institute of PediatricsShanghai Key Laboratory of Birth DefectChildren's Hospital of Fudan UniversityShanghai 201102China Department of Cardiology Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China Center for Chinese Medical Therapy and Systems Biology Shanghai University of Traditional Chinese MedicineShanghai 201203China

To the Editor:Alcohol-induced heart defect is one of the most important clinical manifestations of fetal alcohol spectrum disorder(FASD),characterized by atrioventricular septal defect and arterial conical deformity.[1]Resveratrol,a polyphenol component of the traditional Chinese herb Polygonum cuspidatum,which is mainly extracted from its rhizome,is known to exhibit beneficial effects on the cardiovascular *** example,resveratrol has beneficial effects on heart dysfunction,myocardial hypertrophy,and pressure ***,resveratrol was found to inhibit platelet aggregation,prevent atherosclerosis,and scavenge free radicals.[2]However,the effect of resveratrol on alcohol-induced heart defect during heart formation is still *** unique characteristics of zebrafish embryos,such as their transparent body,in vitro fertilization,and short reproductive cycle,make them an attractive tool for cardiovascular ***,the immersion-based alcohol delivery method used with zebrafish embryos is non-invasive unlike most of the alcohol administration protocols applied in rodent models.

关键词： resveratrol against alcohol-induced heart defect zebrafish embryos fetal alcohol spectrum disorder(FASD)

Two Distinct Charge Orders in Infinite-Layer PrNiO_(2+δ) Revealed by Resonant X-Ray Diffraction

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Chinese Physics Letters 2024年第11期41卷 154-169页

作者： Xiaolin Ren Ronny Sutarto qiang Gao Qisi wang Jiarui Li Yao wang Tao Xiang Jiangping Hu J.Chang Riccardo Comin X.J.Zhou Zhihai Zhu Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Canadian Light Source SaskatoonSaskatchewan S7N 2V3Canada Physik-Institut Universität ZürichWinterthurerstrasse 190CH-8057 ZürichSwitzerland Department of Physics Massachusetts Institute of TechnologyCambridgeMassachusetts 02139USA Department of Physics and Astronomy Clemson UniversityClemsonSC 29631USA Beijing Academy of Quantum Information Sciences Beijing 100193China Songshan Lake Materials Laboratory Dongguan 523808China

Research of infinite-layer nickelates has unveiled a broken translation symmetry,which has sparked significant interest in its root,its relationship to superconductivity,and its comparison to charge order in *** this study,resonant x-ray scattering measurements were performed on thin films of infinite-layer PrNiO_(2+δ).The results show significant differences in the superlattice reflection at the Ni L_(3) absorption edge compared to that at the Pr M_(5) resonance in their dependence on energy,temperature,and local *** differences point to two distinct charge orders,although they share the same in-plane *** is suggested that these dissimilarities could be linked to the excess oxygen dopants,given that the resonant reflections were observed in an incompletely reduced PrNiO_(2+δ)***,azimuthal analysis indicates that the oxygen ligands likely play a crucial role in the charge modulation revealed at the Ni L_(3) resonance.

关键词： film resonant charge

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加强人的能力建设

中国人力资源开发 2008年第12期25卷 99-100页

作者：王强深圳广播电影影视集团人力资源中心

“以人为本”是科学发展观的核心，也是人力资源管理的根本指导方针。坚持以人为本，从事业、企业单位人力资源管理来说，就是要树立人才、人力资本是第一资源、是最大财富的观念，努力提高人的素质，不断加强人的能力建设。

关键词：能力建设人力资源管理以人为本科学发展观企业单位人力资本人的素质财富

miR-888 in MCF-7 Side Population Sphere Cells Directly Targets E-cadherin

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Journal of Genetics and Genomics 2014年第1期41卷 35-42页

作者： Shengjian Huang Ming Cai Yinghui Zheng Longhai Zhou qiang wang Liangbiao Chen Key Laboratory of Molecular and Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of Sciences The Department of Urology of PLA 309 Hospital

Side population （SP） cells are a small subset of cells isolated from a cultured cancer cell line that exhibit characteristics similar to those of cancer stem cells （CSCs）, such as high metastatic and tumorigenic potential. The molecular mechanisms that give rise to the malignant properties of SP cells are not clear. We isolated SP cells from the MCF-7 breast cancer cell line and profiled microRNA （miRNA） expression patterns between SP cell-derived spheroids and non-SP cells. SP spheroids were found to possess 42 up-regulated miRNAs and 27 down-regulated ones （above 5-fold changes）. One of the up-regulated miRNAs, miR-888 computationally predicted to participate in the adherens junction （AJ） pathway, was investigated. Over-expression of miR-888 in MCF-7 cells reduced the mRNA levels of all four AJ pathway genes （E-cadherin, ACTG1, PTPRTand CDC42） that were selected for testing, whereas knocking down miR-888 reversed the trends. Western blot and flow cytometric quantitation of the membrane E-cadherin levels showed the same trend of change under these treatments. Luciferase reporter assay showed E-cadherin is a direct target of miR-888. As a potential role in intercellular adhesiveness and maintenance of malignant tissue architecture, the results indicate that miR-888 is a repressor of the AJ pathway in MCF-7 cells and that up-regulation of miR-888 contributes to aggressiveness in MCF-7 SP cells.

关键词： Side population Cancer stem cell MicroRNA Adherens junction Cancer metastasis