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CHES: A Space-borne Astrometric Mission for the Detection of Habitable Planets of the Nearby Solar-type Stars

Research in Astronomy and Astrophysics 2022年第7期22卷 32-59页

作者： Jiang-Hui Ji Hai-tao Li jun-Bo zhang Liang Fang Dong Li Su Wang Yang Cao Lei Deng Bao-Quan Li Hao Xian Xiao-Dong gao Ang zhang Fei Li Jia-Cheng liu Zhao-Xiang Qi Sheng Jin Ya-Ning liu Guo Chen Ming-tao Li Yao Dong Zi Zhu CAS Key Laboratory of Planetary Sciences Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Key Laboratory of Electronics and Information Technology for Space Systems National Space Science CenterChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Institute of Optics and Electronics Chinese Academy of SciencesChengdu 610209China Key Laboratory on Adaptive Optics Chinese Academy of SciencesChengdu 610209China Key Laboratory of Science and Technology on Space Optoelectronic Precision Measurement Chinese Academy of SciencesChengdu 610209China Innovation Academy for Microsatellites of Chinese Academy of Sciences Shanghai 201306China School of Astronomy and Space Science Nanjing UniversityNanjing 210046China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China

The Closeby Habitable Exoplanet Survey(CHES) mission is proposed to discover habitable-zone Earth-like planets of nearby solar-type stars(~10 pc away from our solar system) via microarcsecond relative *** major scientific objectives of CHES are:to search for Earth Twins or terrestrial planets in habitable zones orbiting100 FGK nearby stars;further to conduct a comprehensive survey and extensively characterize nearby planetary *** primary payload is a high-quality,low-distortion,high-stability *** optical subsystem is a coaxial three-mirror anastigmat(TMA) with a 1.2 m-aperture,0°.44 × 0°.44 field of view and 500 nm-900 nm working wave *** camera focal plane is composed of a mosaic of 81 scientific CMOS detectors each with4 k × 4 k *** heterodyne laser interferometric calibration technology is employed to ensure microarcsecond level(1 μas) relative astrometry precision to meet the requirements for detection of Earth-like *** CHES satellite operates at the Sun-Earth L2 point and observes all the target stars for 5 *** will offer the first direct measurements of true masses and inclinations of Earth Twins and super-Earths orbiting our neighbor stars based on microarcsecond astrometry from *** will definitely enhance our understanding of the formation of diverse nearby planetary systems and the emergence of other worlds for solar-type stars,and finally provide insights to the evolution of our own solar system.

关键词： Astrometry and Celestial Mechanics planets and satellites:detection planets and satellites:terrestrial planets stars:solar-type

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A new lunar absolute control point: established by images from the landing camera on Chang'e-3

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Research in Astronomy and Astrophysics 2014年第12期14卷 1543-1556页

作者： Fen-Fei Wang Jian-jun liu Chun-Lai Li Xin Ren Ling-Li Mu Wei Yan Wen-Rui Wang Jing-tao Xiao Xu Tan Xiao-Xia zhang Xiao-Duan Zou Xing-Ye gao Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of Sciences

The establishment of a lunar control network is one of the core tasks in selenodesy, in which defining an absolute control point on the Moon is the most im- portant step. However, up to now, the number of absolute control points has been very sparse. These absolute control points have mainly been lunar laser ranging retrore- flectors, whose geographical location can be observed by observations on Earth and also identified in high resolution lunar satellite images. The Chang＇e-3 （CE-3） probe successfully landed on the Moon, and its geographical location has been monitored by an observing station on Earth. Since its positional accuracy is expected to reach the meter level, the CE-3 landing site can become a new high precision absolute control point. We use a sequence of images taken from the landing camera, as well as satellite images taken by CE-1 and CE-2, to identify the location of the CE-3 lander. With its geographical location known, the CE-3 landing site can be established as a new abso- lute control point, which will effectively expand the current area of the lunar absolute control network by 22%, and can greatly facilitate future research in the field of lunar surveying and mapping, as well as selenodesy.

关键词： Moon -- methods: data analysis -- techniques: image processing

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Influential and prognostic factors of small for gestational age infants

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Chinese Medical Journal 2009年第4期122卷 386-389页

作者： zhang Yong-li liu jun-tao gao Jin-song YANG Jian-qiu BIAN Xu-ming Department of Obstetrics and Gynecology Peking Union MedicalCollege Hospital Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100730 China

Background Small for gestational age （SGA） infants are associated with a high rate of oligohydramnios, stillbirth and cesarean delivery. Among SGA patients there is a higher risk of neonatal complications, such as polycythemia, hyperbilirubinemia, and hypothermia. Additionally, the SGA infant is prone to suffer from major neurologic sequelae, as well as cardiovascular system disease, in later life. Proper monitoring and therapy during pregnancy are, therefore, of utmost importance. The present study aimed to investigate the influential and prognostic factors of SGA infants.Methods From January 2001 to june 2007, a total of 55 SGA neonatal infants were included in a study group. All were born at Peking Union Medical College Hospital, with regular formal antenatal examinations. In addition, a total of 122 cases of appropriate for gestational age （AGA） infants were born at the same time and were registered into a control group. All cases were singleton pregnancies with detailed information of the maternal age, gravidity, parity, maternal height and weight, complications, uterine height and abdominal circumference, results from transabdominal ultrasonography between 32-38 gestational weeks, pregnancy duration, delivery manner, placenta, umbilical cord, and neonatal *** Significant differences were observed in placenta weight and neonatal malformations between the study and control groups. Multivariate analysis revealed increased parity, maternal hyperthyroidism and hyperthyroidism history as risk factors. Fetal abdominal circumferences less than 30 and 32 cm at 32-38 gestational weeks respectively, as determined by ultrasonography, resulted in a Youden index of 0.62. Conclusions SGA infants were associated with a greater risk of smaller placentas and infant malformations. Increased parity, maternal hyperthyroidism, and a hyperthyroid history were risk factors for SGA infants. Fetal abdominal circumference less than 30 cm at 32 gestational weeks and

关键词： small for gestational age singleton pregnancy hyperthyroidism infant malformation

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Clinicopathological Characteristics and Prognosis of Hepatoid Adenocarcinoma of the Stomach:Evaluation of a Pooled Case Series

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Current Medical Science 2018年第6期38卷 1054-1061页

作者： Xiang-yu ZENG Yu-ping YIN Hua XIAO Peng zhang jun HE Wei-zhen liu Jin-bo gao Xiao-ming SHUAI Guo-bin WANG Xiu-li WU Kai-xiong tao Department of Gastrointestinal Surgery Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Gastroduodenal and Pancreatic Surgery Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine Central South UniversityChangsha 410013China Department of Pathology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

Hepatoid adenocarcinoma of the stomach (HAS)is an extremely rare and unique gastric *** present study aimed to examine the relevance of the clinicopathological characteristics of HAS with patient *** retrospectively reviewed clinical data of 34 HAS patients treated at our institution between January 2010 and December 2016,as well as 294 cases reported prior to 2017 in research *** these patients,45.6%(115/252)had lesions in the gastric antrum and 77.0%(235/305)were *** levels of serum alpha-fetoprotein (AFP)were detected in most patients(75/93,80.6%).Vascular invasion(199/286,69.6%),lymph node metastasis (222/283,78.4%),and preoperative distant metastasis (121/328,36.9%)were commonly *** 5-year disease-free survival (DFS)and disease-specific survival (DSS) were 20.7%and 29.2%,*** and DSS of patients receiving neoadjuvant therapy were significantly higher than those of patients receiving postoperative adjuvant therapy [DFS:P<0.001, hazard ratio (HR)=-1.831,95%confidence interval (CI):0.060-0.429;DSS:P<0.001,HR=-2.185, 95%CI:0.032-0.401].In conclusion,HAS exhibits distinct clinicopathological characteristics and a strikingly worse prognosis when compared with common gastric *** surgery,early pTNM stage,and adjuvant therapy may predict a more favorable *** therapy is strongly recommended for patients with lymph node metastasis or/and preoperative distant metastasis.

关键词： hepatoid adenocarcinoma stomach clinicopathological characteristics adjuvant therapy neoadjuvant therapy prognosis

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跨道监控系统设计与应用

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应用基础与工程科学学报 2011年第3期19卷 517-525页

作者：高韬王萍王成山张军天津大学电气与自动化工程学院天津300072 河北省电子信息产品监督检验院河北石家庄050071 河北省工业和信息化厅河北石家庄050051

设计了一套基于视频的机动车跨道违章监测系统,系统的硬件平台由工控机,摄像机组成.首先由平均算法得到良好的动态背景图像,并由Hough变换法提取车道线;在车辆检测过程中提出了背景差法与边缘提取法相结合,车道线辅助识别的两次目标轮... 详细信息

设计了一套基于视频的机动车跨道违章监测系统,系统的硬件平台由工控机,摄像机组成.首先由平均算法得到良好的动态背景图像,并由Hough变换法提取车道线;在车辆检测过程中提出了背景差法与边缘提取法相结合,车道线辅助识别的两次目标轮廓提取算法,从而获得完整准确的运动目标轮廓;在违章判别中提出了简易准确的跨道违章判别算法;最后使用均值漂移算法对运动车辆进行跟踪,并结合卡尔曼滤波器预测车辆在下一帧的位置.通过实际道路测试,该系统具有一定的实时性、准确性和智能性,可应用于智能交通监控领域.

关键词：智能交通跨道违章车道识别 Hough变换运动跟踪

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基于交通视频序列的多运动目标跟踪算法

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中南大学学报（自然科学版） 2010年第3期41卷 1028-1036页

作者：高韬刘正光张军天津大学电气与自动化工程学院天津300072

针对智能交通领域对自适应多运动目标跟踪的广泛需求,提出一种新型的基于交通视频序列的多目标跟踪算法。通过Marr小波概率核函数生成静态背景,并结合当前帧在B/RDWT(Binary/redundant discrete wavelet transforms)域进行多运动目标识... 详细信息

针对智能交通领域对自适应多运动目标跟踪的广泛需求,提出一种新型的基于交通视频序列的多目标跟踪算法。通过Marr小波概率核函数生成静态背景,并结合当前帧在B/RDWT(Binary/redundant discrete wavelet transforms)域进行多运动目标识别,同时采用边缘阴影剔除算法去除阴影的干扰。运动跟踪采用SI_P(SIFT-particle)粒子滤波算法,并结合改进的均值漂移(mean-shift)法获得运动目标的准确跟踪窗口。采用队列链表法记录多运动目标之间的数据关联,在提高识别准确率的同时降低运算的复杂度。算法采用VC++6.0实现,通过实际道路测试,研究结果表明:SI_P粒子滤波算法与传统算法相比,平均时耗只多0.15s,跟踪窗口尺度可自适应变化,并且该算法对于多运动目标识别跟踪具有更优越的实时性和抗遮挡性。

关键词：多运动目标跟踪运动识别智能交通系统车辆跟踪

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Epidemic of Rabies and Effect of Its Vaccine against a Dog That Consecutively Attacked Ten People in One Day

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Biomedical and Environmental Sciences 2014年第1期27卷 60-64页

作者： gao Li Dong zhang Hong CAI Liang CHEN Bo Zhong JIANG Yong Lin liu Yun Zhi LV Xin jun YU Peng Cheng HU Shi Xiong liu Fu Qiang LI Hao LI Ge Ying SHEN Xin Xin tao Xiao Yan zhang Si Yu liu Jia Hui TANG Qing LI jun Hua Hunan Center for Disease Control and Prevention Key Laboratory of Microbial Molecular Biology of Hunan Province Yongzhou Center for Disease Control and Prevention Key Laboratory for Medical Virology Ministry of HealthInstitute for Viral Disease Control and PreventionChina CDC Ningyuan Center for Disease Control and Prevention

On December 21, 20：10, a stray dog consecutively attacked 10 people in Lengshui Village, Ningyuan County, Yongzhou City, Hunan Province, China. The dog was killed by the local CDC staff and vicinity villager, its brain tissue sample was taken within 24 h. The epidemic focus was disinfected and the injured people received post exposure prophylaxis （PEP）. Pathogens were detected in the tissue sample by the provincial CDC. The immunity and safety of rabies vaccine were assayed after PEP, the injured people were regularly followed up in the following 2 y and 6 mon.

关键词： Epidemic of Rabies and Effect of Its Vaccine against a Dog That Consecutively Attacked Ten People in One Day gene Figure PV PEP

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Contribution of the Alternative Respiratory Pathway to PSII Photoprotection in C3 and C4 Plants

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Molecular Plant 2017年第1期10卷 131-142页

作者： Zi-Shan zhang Mei-jun liu Renate Scheibe Jennifer Selinski Li-tao zhang Cheng Yang Xiang-Long Meng Hui-Yuan gao State Key Laboratory of Crop Biology ColLege of Life Sciences College of Horticulture Science and Engineering Shandong Agricultural University Tai'an-271018 China Department of Plant Physiology FB5 University of Osnabrueck 49069 Osnabrueck Germany National and Local Joint Engineering Laboratory of Ecological Mariculture Institute of Oceanology Chinese Academy of Sciences 7 Nanhai Road Qingdao 266071 China Wheat Research Institute Henan Academy of Agricultural Sciences Zhengzhou Henan 450002 China These authors contributed equally te this article.

The mechanism by which the mitochondrial alternative oxidase （AOX） pathway contributes to photosystem II （PSII） photoprotection is in dispute. It was generally thought that the AOX pathway protects photosystems by dissipating excess reducing equivalents exported from chloroplasts through the malate/oxaloacetate （Mal/OAA） shuttle and thus preventing the over-reduction of chloroplasts. In this study, using the aoxla Arabidopsis mutant and nine other C3 and C4 plant species, we revealed an additional action model of the AOX pathway in PSII photoprotection. Although the AOX pathway contributes to PSII photoprotection in C3 leaves treated with high light, this contribution was observed to disappear when photorespiration was suppressed. Disruption or inhibition of the AOX pathway significantly decreased the photorespiration in C3 leaves. Moreover, the AOX pathway did not respond to high light and contributed little to PSII photoprotection in C4 leaves possessing a highly active Mal/OAA shuttle but with little photorespiration. These results demonstrate that the AOX pathway contributes to PSII photoprotection in C3 plants by maintaining photo- respiration to detoxify glycolate and via the indirect export of excess reducing equivalents from chloro-plasts by the MaI/OAA shuttle. This new action model explains why the AOX pathway does not contribute to PSII photoprotection in C4 plants.

关键词： alternative oxidase photoprotection photosystem II photorespiration C3 plant C4 plant

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Loupe-assisted versus microscopic varicocelectomy： s there an intraoperative anatomic difference？

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Asian Journal of Andrology 2014年第1期16卷 112-114页

作者： Hao zhang Xiao-Peng liu Xiao-Jian Yang Wen-tao Huang Xing-Xing Ruan Heng-jun Xiao Liao-Yuan Li Xin gao Yan zhang Department of Urology The Third Affiliated Hospital of Sun Yat-sen University Guangzhou China

The aim of this study was to compare the intraoperative difference in anatomic details between Ioupe-assisted and microscopic varicocelectomy within the same spermatic cord. Between April 2011 and August 2011, 26 men with 33 sides containing grade 2-3 varicocele were enrolled in this study. First, one surgeon performed the open inguinal varicocelectomy under x 3.5 Ioupe magnification. The presumed vascular channels and lymphatics were isolated and marked without ligation. Another surgeon then microsurgically dissected and checked the same spermatic cord using an operating microscope to judge the results in terms of the ligation of the internal spermatic veins and the preservation of the arteries and lymphatics. There were significant differences in the average number of internal spermatic arteries （1.51 vs 0.97）, internal spermatic veins （5.70 vs 4.39） and lymphatics （3.52 vs 1.61） between the microscope and Ioupe-assisted procedures （P 〈 0.001, P 〈 0.001, P 〈 0.001, respectively）. Meanwhile, in varicocele repair with Ioupe magnification, an average of 1.30 β± 1.07 （43/33） internal spermatic veins per side were missed, among the overlooked veins, 1.12 ± 0.93 （37/33） were adhered to the preserved testicular artery, as well as 0.55 ± 0.79 lymphatics and 0.36 ± 0.55 arteries that were to be ligated. In conclusion, microscopic varicocelectomy could preserve more internal spermatic arteries and lymphatics and could ligate more veins than the Ioupe-assisted procedure. To some degree, Ioupe magnification is inadequate for the reliable identification and dissection of the tiny vessels of the spermatic cord, as most of the overlooked veins were adhered to the preserved testicular artery.

关键词： intraoperative difference Ioupe-assisted microscopic varicocelectomy

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Temperature-induced resistance transition behaviors of melamine sponge composites wrapped with different graphene oxide derivatives

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Journal of Materials Science & Technology 2021年第26期85卷 194-204页

作者： Cheng-Fei Cao Wen-jun liu Hui Xu Ke-Xin Yu Li-Xiu Gong Bi-Fan Guo Yu-Tong Li Xiao-Lan Feng Ling-Yu Lv Hong-tao Pan Li Zhao Jia-Yun Li Jie-Feng gao Guo-Dong zhang Long-Cheng Tang Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education College of MaterialChemistry and Chemical EngineeringHangzhou Normal UniversityHangzhou 311121China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

Temperature-re s ponsive resistance transition behaviors of the melamine sponges wrapped with different graphene oxide derivatives(***,wide-ribbon and sheet)were *** sponge composites coated by three types of GO derivatives were prepared by a simple dip-coating *** these composites show good mechanical flexibility and reliability(almost unchanged compressive stress at 70%strain after 100 cycles),high hydrophobicity(water contact angle>120°),excellent flame resistance(self-extinguishing)and structural stability even after burning,which was used to construct the resistance-based fire alarm/warning ***,the different resistance response behaviors of such sensors are strongly dependent on the GO size and network formed on the MF skeleton ***,at a fixed high temperature of~350℃,the three fire alarm sensors show different response time(to trigger the alarm light)of 6.3,8.4 and 11.1 s for nanoribbon,wide-ribbon and sheet at the same concentration,*** structural observation and chemical analysis demonstrated that the discrepancy of temperature-responsive resistance transition behaviors of various GO derivatives was strongly determined by their different thermal reduction degrees during the high-tempe rature or flame treating *** work offers a design and development for construction of smart fire alarm device for potential fire prevention and safety applications.

关键词： Graphene oxide derivatives Fire warning response Structure and morphology Thermal reduction Temperature-responsive resistance transition

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