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HiFAST:An H?data calibration and imaging pipeline for FAST

Science china(Physics,Mechanics & Astronomy) 2024年第5期Mechanics & Astronomy) .卷 186-203页

作者： Yingjie Jing Jie Wang chen Xu Ziming liu Qingze chen Tiantian liang Jinlong Xu Yixian Cao Jing Wang Huijie Hu Chuan-Peng Zhang Qi Guo liang Gao Mei Ai Hengqian Gan Xuyang Gao Jinlin Han ligang Hou Zhipeng Hou Peng jiang Xu Kong Fujia li Zerui liu li Shao Hengxing Pan Jun Pan Lei Qian Jinghai Sun Ningyu Tang Qingliang Yang Bo Zhang Zhiyu Zhang Ming zhu National Astronomical Observatories Chinese Academy of Sciences institute for Frontiers in Astronomy and Astrophysics Beijing Normal University School of Astronomy and Space Science University of Chinese Academy of Sciences Guizhou Radio Astronomical Observatory Guizhou University Max Planck institute for Extraterrestrial Physics Kavli {1. for Astronomy and Astrophysics Peking University institute of Computational Cosmology Department of PhysicsUniversity of Durham CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of Sciences Deep Space Exploration Laboratory/Department of Astronomy University of Science and Technology of China School of Astronomy and Space Science University of Science and Technology of China Astrophysics Department of PhysicsUniversity of Oxford College of Earth sciences Guilin University of Technology Department of Physics Anhui Normal University School of Astronomy and Space Science Nanjing University Key Laboratory of Modern Astronomy and Astrophysics Nanjing University

The Five-hundred-meter Aperture Spherical radio Telescope（FAST） has the largest aperture and a 1.-beam L-band receiver,making it powerful for investigating the neutral hydrogen atomic gas（H?） in the *** present HiFAST（https://***）,a dedicated,modular,and self-contained calibration and imaging pipeline for processing the H?data of *** pipeline consists of frequency-dependent noise diode calibration,baseline fitting,standing wave removal using an FFT-based method,flux density calibration,stray radiation correction,and gridding to produce data *** modules can be combined as needed to process the data from most FAST observation modes:tracking,drift scanning,On-The-Fly mapping,and most of their *** HiFAST,the root-mean-square（RMS） noises of the calibrated spectra from all 1. beams were only slightly（～5%） higher than the theoretical *** results for the extended source M33 and the point sources are consistent with the results from *** moment maps（0,1.and 2） of M33 agree well with the results from the Arecibo Galaxy Environment Survey（AGES） with a fractional difference of less than 1.%.For a common sample of 221.sources with signal-to-noise ratio S/N>1. from the Arecibo Legacy Fast ALFA（ALFALFA） survey,the mean value of fractional difference in the integrated flux density,Sint,between the two datasets is approximately 0.005%,with a dispersion of 1..4%.Further checks on the integrated flux density of 23 sources with seven observations indicate that the variance in the flux density of the source with luminous objects(Sint>2.5 Jy km s-1. is less than 5%.Our tests suggest that the FAST telescope,with the efficient,precise,and user-friendly pipeline HiFAST,will yield numerous significant scientific findings in the investigation of the H? in the universe.

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Probing dark matter particles from evaporating primordial black holes via electron scattering in the CDEX-1. experiment

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Science china(Physics,Mechanics & Astronomy) 2024年第10期67卷 83-91页

作者： Zhenhua Zhang litao Yang Qian Yue Kejun Kang Yuanjing li Haipeng An Greeshma C. Jianping Chang Yunhua chen Jianping cheng Wenhan Dai Zhi Deng Changhao Fang Xinping Geng Hui Gong Qiuju Guo Tao Guo Xuyuan Guo li He Shengming He Jinwei Hu Hanxiong Huang Tuchen Huang lin jiang S.Karmakar Haubin li Hanyu li Jianmin li Jin li Qianyun li Renmingjie li Xueqian li Yulan li Yifan liang Bin liao FongKay lin ShinTed lin Jiaxuan liu Shukui liu Yandong liu Yu liu Yuanyuan liu Hao Ma Yucai Mao Qiyuan Nie Jinhua Ning Hui Pan Ningchun Qi Jie Ren Xichao Ruan Monoj Kumar Singh Tianxi Sun Changjian Tang Yang Tian Guangfu Wang Junzheng Wang li Wang Qing Wang Yufeng Wang Yunxiang Wang Henry Tsz-King Wong Shiyong Wu Yucheng Wu Haoyang Xing Rui Xu Yin Xu Tao Xue Yulu Yan Nan Yi Chunxu Yu Haijun Yu Jianfeng Yue Ming Zeng Zhi Zeng Bingtao Zhang Fengshou Zhang Lei Zhang Zhenyu Zhang Jizhong Zhao Kangkang Zhao Minggang Zhao Jifang Zhou Zuying Zhou Jingjun zhu CDEX Collaboration Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua UniversityBeijing 100084China Department of Physics Tsinghua UniversityBeijing 100084China institute of Physics Academia SinicaTaipei 11529China NUCTECH Company Beijing 100084China YaLong River Hydropower Development Company Chengdu 610051China College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875China College of Physics Sichuan UniversityChengdu 610065China School of Physics Peking UniversityBeijing 100871China Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413China Sino-French institute of Nuclear and Technology Sun Yet-sen UniversityZhuhai 519082China School of Physics Nankai UniversityTianjin 300071China Department of Physics Banaras Hindu UniversityVaranasi 221005India Department of Physics Beijing Normal UniversityBeijing 100875China 不详

Dark matter(DM)is a major constituent of the ***,no definite evidence of DM particles(denoted as“χ”)has been found in DM direct detection(DD)experiments to *** is a novel concept of detectingχfrom evaporating primordial black holes(PBHs).We search forχemitted from PBHs by investigating their interaction with target *** examined PBH masses range from 1.1.^(1.)to 7×1.^(1.)g under the current limits of PBH abundance *** 205.4 kg·day data obtained from the CDEX-1. experiment conducted in the{1. Jinping Underground Laboratory,we exclude theχ-electron(χ-e)elastic-scattering cross sectionσ_(χe)~5×1.^(-29)cm^(2)forχwith a mass■keV from our *** the higher radiation background but lower energy threshold(1.0 eV),CDEX-1. fills a part of the gap in the previous ***(m_(χ),σ_(χe))can be determined in the future,DD experiments are expected to impose strong constraints on fPBHfor large MPBHs.

关键词： CDEX primordial black hole light dark matter particle dark matter-electron scattering high purity germanium detector

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上海市肺科医院磨玻璃结节早期肺腺癌的诊疗共识(第一版)

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中国肺癌杂志 2018年第3期21卷 147-159页

作者：姜格宁陈昶朱余明谢冬戴洁靳凯淇沈莹冉王海峰李辉张兰军高树庚陈克能张雷周晓史景云汪浩谢博雄蒋雷范江赵德平陈乾坤段亮何文新周逸鸣刘鸿程赵晓刚张鹏秦雄同济大学附属上海市肺科医院上海200043 首都医科大学附属北京朝阳医院北京100020 中山大学附属肿瘤医院广州510060 国家癌症中心/中国医学科学院北京协和医学院肿瘤医院北京100021 北京大学肿瘤医院北京100142

随着胸部计算机断层扫描(computed tomography,CT)检查,尤其是低剂量薄层CT筛查项目在中国的广泛开展,越来越多的无症状肺部磨玻璃结节(ground-glass nodules,GGNs)被发现。虽然国内及国际上已发布了一系列针对肺部GGNs的指南,但是这些... 详细信息

随着胸部计算机断层扫描(computed tomography,CT)检查,尤其是低剂量薄层CT筛查项目在中国的广泛开展,越来越多的无症状肺部磨玻璃结节(ground-glass nodules,GGNs)被发现。虽然国内及国际上已发布了一系列针对肺部GGNs的指南,但是这些指南的撰写者多来自呼吸、肿瘤及影像专业,可能缺乏对现代微创胸外科的充分认识,造成外科手术在肺部GGNs诊治中的作用不明确,甚至被低估;而且,肺部肿瘤相关的各学科对于早期肺癌,尤其是浸润前病变的处理也缺乏统一规范。因此,基于国内外现有文献及上海市肺科医院多年积累的经验,上海市肺科医院撰写了此诊疗共识。本共识推荐对于疑似肺腺癌的GGNs进行多学科评估,依据诊断,选择合理的处置方式。对于疑似原位腺癌,推荐进行胸部薄层CT随访,或在特定情况下进行不超过肺段切除的限制性肺切除;对于疑似微浸润腺癌,推荐进行限制性肺切除或肺叶切除;对于疑似浸润性腺癌,建议依据病灶是否含有磨玻璃成分、位置、大小、个数及患者躯体情况选择合理的手术方式;而肺多发结节的处理原则推荐为主病灶优先,兼顾次要病灶,综合选择治疗方案。

关键词：肺磨玻璃结节原位腺癌微浸润腺癌浸润性腺癌外科

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澜沧江——湄公河流域干旱趋势及其对生态系统碳固定的影响

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地理学报 2024年第3期79卷 747-764页

作者：陈世亮李霞钱钊晖王绍强王苗苗刘侦海李卉夏烨赵紫祺李亭谕朱彤彤陈璇蒋赟浩谷鹏中国地质大学(武汉)地理与信息工程学院区域生态过程与环境演变湖北省重点实验室武汉430074 自然资源部国土碳汇智能监测与空间调控工程技术创新中心武汉430074 生态环境部对外合作与交流中心北京100035 中国地质大学(武汉)生物地质与环境地质国家重点实验室武汉430074 中国科学院地理科学与资源研究所中国科学院生态系统网络观测与模拟重点实验室北京100101 福建省农业科学院数字农业研究所福州350000

全球变暖导致干旱事件频发,强度不断增大,对陆地生态系统碳收支产生了重大影响。本文评估了2000—201.年澜沧江—湄公河(澜湄)流域的干旱趋势,并通过标准化异常指数(SAI)、标准化降水蒸散指数(SPEI)、潜在蒸散(PET)、饱和水汽压差(VPD)... 详细信息

全球变暖导致干旱事件频发,强度不断增大,对陆地生态系统碳收支产生了重大影响。本文评估了2000—201.年澜沧江—湄公河(澜湄)流域的干旱趋势,并通过标准化异常指数(SAI)、标准化降水蒸散指数(SPEI)、潜在蒸散(PET)、饱和水汽压差(VPD)和土壤水分(Soil_w)评价了干旱对该流域净生态系统生产力(NEP)的影响。结果表明:①2000—201.年澜湄流域向暖干化发展,主要受降水减少的影响,近1.4的区域遭受了中度以上干旱,其中2009—201.年间干旱事件频发,干旱热点地区位于澜沧江上游和湄公河中下游地区;②尽管澜湄流域碳汇整体上随着气候变暖而增加,但干旱年份植被光合作用降低,生态系统呼吸增加,导致2005年、201.年和201.年湄公河流域生态系统碳源汇发生转变,其中201.年干旱使得GPP减少5.68%,生态系统呼吸增加3.1.%,NEP呈现重度异常;③干旱对流域NEP普遍具有滞后效应,整体滞后时间为1.4个月,面积占比为57.82%;④不同水文气候要素对NEP的影响表现出显著的空间差异,其中澜湄流域NEP与VPD整体呈负相关,云南省、缅甸西部、柬埔寨和越南南部的NEP与SPEI呈正相关,而青藏高原NEP主要受到土壤干旱的影响。干旱对澜湄流域生态系统碳固定的影响存在显著的空间异质性,量化干旱对碳固定的影响可以为气候变暖背景下澜湄流域不同地区的生态管理提供参考。

关键词：干旱固碳速率净生态系统生产力澜湄流域标准化降水蒸散指数地理加权回归

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Effect of Kuanxiong Aerosol(宽胸气雾剂)on Patients with Angina Pectoris:A Non-inferiority Multi-center Randomized Controlled Trial

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chinese Journal of Integrative Medicine 2018年第5期24卷 336-342页

作者： YANG Qiao-ning1.BAI Rui-na1.DONG Guo-ju1.GE Chang-jiang2 ZHOU Jing-min3 HUANG {1.4 HE Yan 5 WANG Jun6 REN Ai-hua7 HUANG Zhan-quan8 zhu Guang-{1.9 LU Shu1. XlONG Shang-quan1. XlAN Shao-xiang1. zhu Zhi-jun1. SIll Da-zhuo1.LU Shu-zheng2 {1. {1.-zhi1.chen Ke-ji1 Cardiovascular Diseases Center Xiyuan Hospital China Academy of Chinese Medical Sciences Department of Cardiology Beijing Anzhen Hospital Beijing Institute of Respiratory Medicine Capital Medical University Department of Cardiology Zhongshan Hospital Fudan University Department of Cardiology China-Japan Friendship Hospital Department of Cardiology Longhua Hospital Shanghai University of Traditional Chinese Medicine Department of Cardiology Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine Department of Cardiology Zhejiang Hospital Department of Cardiology The First Affiliated Hospital of Zhejiang Chinese Medical University Department of Cardiology Guangxing Hospital Affiliated to Zhejiang Chinese Medical University Department of Cardiology Wuxi Traditional Chinese Medicine Hospital Nanjing University of Traditional Chinese Medicine Department of Cardiology People's Hospital Affiliated Fujian University of Traditional Chinese Medicine Department of Cardiology The First Affiliated Hospital of Guangzhou University of Chinese Medicine Department of Cardiology The 117th Hospital of People's Liberation Army of China

Objective： To evaluate the effect and safety of Kuanxiong Aerosol （宽胸气雾剂, KA） on patients with angina pectoris. Methods： Block randomization was performed to randomly allocate 750 patients into KA （376 cases） and control groups （374 cases）. During an angina attack, the KA group received 3 consecutive sublingual sprays of KA （0.6 mL per spray）. The control group received 1.sublingual nitroglycerin tablet （NT, 0.5 rag/tablet）. Log-rank tests and Kaplan-Meier estimations were used to estimate the angina remission rates at 6 time-points after treatment （1.2, 3, 4, 5, and 〉5 min）. Logistic regression analysis was performed to observe the factors influencing the rate of effective angina remission, and the remission rates and incidences of adverse reactions were compared for different Canadian Cardiovascular Society （CCS） classes of angina. Results： The 5-min remission rates in the KA and control groups were not significantly different （94.41. vs. 90.64%, P〉0.05）. The angina CCS class significantly influenced the rate of remission （95% confidence interval = 0.483-0.740, P〈0.01.. In the CCS subgroup analysis, the 3- and 5-min remission rates for KA and NT were similar in the CCS I and IV subgroups （P〉0.05）, while they were significantly better for KA in the CCS Ⅱ and Ⅲ subgroups （P〈0.05 or P〈0.01.. Furthermore, the inciden0ce of adverse reactions was significantly lower in the KA group than in the control group for the CCS Ⅱ and Ⅲ subgroups （9.29% vs. 26.22%, 1..1.% vs. 20.88%, P〈0.05 or P〈0.01.. Conclusions： KA is not inferior to NT in the remission of angina. Furthermore, in CCS Ⅱ and Ⅲ patients, KA is superior to NT, with a lower incidence of adverse reactions. （Registration No. ChiCTR- IPR-1.007204）

关键词： Kuanxiong Aerosol angina pectoris Canadian Cardiovascular Society classification of angina randomized controlled trial chinese medicine

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Consensus on the clinical diagnosis and treatment of grade 3 pancreatic neuroendocrine tumors

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胰腺病学杂志(英文) 2024年第2期07卷 97-105页

作者： chen Jie Wu Wenming Bai Chunmei Chi Yihebali Huo li jiang liming Ji Yuan Luo Jie li Jie li Jingnan Lou Wenhui Shao chenghao Shen lin Wang Feng Wang Yu Xue ling Xu Jin Yuan Chunhui Yu Xianjun Yin Xiaoyu Zhao Hong zhu Xiongzeng Zhao Yupei Centre for Neuroendocrine Tumors Fudan University Shanghai Cancer Center Shanghai China Department of General Surgery State Key Laboratory of Complex Severe and Rare Diseases Peking Union Medical College Hospital Chinese Academy of Medical Science and Peking Union Medical College Beijing China Department of Medical Oncology Peking Union Medical College Hospital Chinese Academy of Medical Science &amp Peking Union Medical College Beijing China Department of Medical Oncology National Cancer Center/ National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China Department of Nuclear Medicine State Key Laboratory of Complex Severe and Rare Diseases Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine Peking Union Medical College Hospital Chinese Academy of Medical Sciences Beijing China Department of Diagnostic Radiology National Cancer Center/National Clinical Research Center for Cancer/ Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China Department of Pathology Zhongshan Hospital Fudan University Shanghai China Department of Pathology China-Japan Friendship Hospital Beijing China Department of Gastroenterological Oncology Beijing Cancer Hospital Peking University Cancer Hospital &amp institute Beijing China Department of Gastroenterology Peking Union Medical College Hospital Peking Union Medical College Chinese Academy of Medical Sciences Beijing China Department of Pancreatic Surgery Zhongshan Hospital Fudan University Shanghai China Department of Pancreatic-Biliary Surgery Second Affiliated Hospital of Naval Medical University Shanghai China Department of Gastrointestinal Oncology Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education) Peking University Cancer Hospital &amp Department of Nuclear Medicine Nanjing First Hospital Nanjing Medical University Nanjing China Depar

The World Health Organization (WHO) 201. classifications for neuroendocrine neoplasms (NENs) subdivided grade 3 pancreatic neuroendocrine neoplasms (pNENs) into G3 well-differentiated pancreatic neuroendocrine tumors (G3 pNETs) and poorly differentiated pancreatic neuroendocrine carcinomas (pNECs), according to the mitotic count, Ki-67 index, and cell differentiation. As a new category, G3 pNETs remain a challenging group of tumors to manage by lacking large randomized trials and consensus to support its clinical practice. Therefore, the {1. Pancreatic Surgery Association, {1. Society of Surgery, {1. Medical Association gathered experts in this field to formulate this consensus for the diagnosis and treatment of G3 pNETs.

关键词： Clinical diagnosis Grade 3 Pancreatic neuroendocrine tumors Treatment

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Einstein Probe discovery of EP240408a:A peculiar X-ray transient with an intermediate timescale

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Science china(Physics,Mechanics & Astronomy) 2024年

作者： Wenda Zhang Weimin Yuan Zhixing ling Yong chen Nanda Rea Arne Rau Zhiming Cai Huaqing cheng Francesco Coti Zelati lixin Dai Jingwei Hu Shumei Jia Chichuan Jin Dongyue li Paul O’Brien Rongfeng Shen Xinwen Shu Shengli Sun Xiaojin Sun Xiaofeng Wang Lei Yang Bing Zhang chen Zhang Shuang-Nan Zhang Yonghe Zhang Jie An David Buckley Alexis Coleiro Bertrand Cordier liming Dou Rob Eyles-Ferris Zhou Fan Hua Feng Shaoyu Fu Johan P. U. Fynbo Lluis Galbany Saurabh W. Jha Shuaiqing jiang Albert Kong Erik Kuulkers Weihua Lei Wenxiong li Bifang liu Mingjun liu Xing liu Yuan liu zhu liu Chandreyee Maitra Alessio Marino Itumeleng Monageng Kirpal Nandra Jeremy Sanders Roberto Soria lian Tao Junfeng Wang Song Wang Tinggui Wang Zhongxiang Wang Qingwen Wu Xuefeng Wu Dong Xu Yanjun Xu Suijian Xue Yongquan Xue Zijian Zhang Zipei zhu Hu Zou Congying Bao Fansheng chen Houlei chen Tianxiang chen Wei chen Yehai chen Yifan chen chenzhou Cui Weiwei Cui Yanfeng Dai Dongwei Fan Ju Guan Dawei Han Dongjie Hou Haibo Hu Maohai Huang Jia Huo Zhenqing Jia Bowen jiang Ge Jin chengkui li Junfei li Longhui li Maoshun li Wei li Zhengda li Tianying lian Congzhan liu Heyang liu Huaqiu liu Fangjun Lu Laidan Luo Jia Ma Xuan Mao Haiwu Pan Xin Pan liming Song Hui Sun Yunyin Tan Qingjun Tang Yihan Tao Hao Wang Juan Wang Lei Wang Wenxin Wang Yilong Wang Yusa Wang Qinyu Wu Haitao Xu Jingjing Xu Xinpeng Xu Yunfei Xu Zhao Xu Changbin Xue Yulong Xue Ailiang Yan Haonan Yang Xiongtao Yang Yanji Yang Juan Zhang Mo Zhang Wenjie Zhang Zhen Zhang Zhen Zhang Ziliang Zhang Donghua Zhao Haisheng Zhao Xiaofan Zhao Zijian Zhao Hongyan Zhou Yilin Zhou Yuxuan zhu Zhencai zhu Institut d’Estudis Espacials de Catalunya (IEEC) Max Planck institute for Extraterrestrial Physics Innovation academy for Microsatel{1.tes chinese {1. of sciences Department of Physics University of Hong Kong School of Physics and Astronomy University of Leicester School of Physics and Astronomy Sun Yat-sen University National Astronomical Observatories Department of Physics Anhui Normal University Shanghai institute of Technical Physics chinese {1. of sciences Physics Department Tsinghua University Nevada Center for Astrophysics University of Nevada Las Vegas Department of Physics and Astronomy University of Nevada Las Vegas chinese {1. of sciences South African Astronomical Observatory Department of Astronomy University of Cape Town Department of Physics University of the Free State Universite' Paris Cite' CNRS Astroparticule et Cosmologie Universite' Paris Cite' CEA Paris-Saclay School of Astronomy and Space sciences IRFU/DAp-AIM Department of Astronomy Guangzhou University Cosmic Dawn Center (DAWN) Niels Bohr institute University of Copenhagen Department of Physics and Astronomy Rutgers the State University of New Jersey institute for Cosmic Ray Research University of chinese academy of sciences The University of Tokyo ESA/ESTEC Noordwijk 2201.AZ The Netherlands Department of Astronomy School of Physics Huazhong University of Science and Technology INAF-Osservatorio Astrofisico di Torino Sydney institute for Astronomy School of Physics Key Laboratory of Particle Astrophysics The University of Sydney Department of Astronomy Xiamen University institute for Frontiers in Astronomy and Astrophysics beijing Normal University Department of Astronomy University of Science and Technology Hefei School of Astronomy and Space sciences University of Science and Technology of china institute of High Energy Physics institute of Deep Space {1. Deep Space Exploration Laboratory Department of Astronomy School of Physics and Astronomy Yunnan University Shanghai Astronomical Observatory chinese {1. of Science

We report the discovery of a peculiar X-ray transient,EP240408a,by Einstein Probe （EP） and follow-up studies made with EP,Swift,NICER,GROND,ATCA and other ground-based multiwavelength *** new transient was first detected with Wide-field X-ray Telescope （WXT） on board EP on April 8th,2024,manifested in an intense yet brief X-ray flare lasting for *** flare reached a peak flux of 3.9×1.-9erg cm-2s-1.n 0.5-4 keV,300 times brighter than the underlying X-ray emission detected throughout the *** and more precise follow-up observations by EP/FXT,Swift and NICER confirmed the finding of this new *** X-ray spectrum is non-thermal in 0.5-1. keV,with a power-law photon index varying *** X-ray light curve shows a plateau lasting for4d,followed by a steep decay till becoming undetectable1. d after the initial *** on its temporal property and constraints from previous EP observations,an unusual timescale in the range of 7-23 d is found for EP240408a,which is intermediate between the commonly found fast and long-term *** counterparts have been found in optical and near-infrared,with the earliest observation at 1. h after the initial X-ray detection,suggestive of intrinsically weak emission in these *** demonstrate that the remarkable properties of EP240408a are inconsistent with any of the transient types known so far,by comparison with,in particular,jetted tidal disruption events,gamma-ray bursts,X-ray binaries and fast blue optical *** nature of EP240408a thus remains an *** suggest that EP240408a may represent a new type of transients with intermediate timescales of the order of1. *** detection and follow-ups of more of such objects are essential for revealing their origin.

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Modern pollen distributions in Qinghai-Tibetan Plateau and the development of transfer functions for reconstructing Holocene environmental changes

Modern pollen distributions in Qinghai-Tibetan Plateau and t...

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中国科学院地质与地球物理研究所第1.届（201.年度）学术年会

作者： Houyuan Lu~(a,*),Naiqin Wu~a,Kam-biu liu~b,liping zhu~c,Xiangdong Yang~d,Tandong Yao~c,Luo Wang~a, Quan li~a,Xingqi liu~d,Caiming Shen~e,Xiaoqiang li~f,Guobang Tong~g,Hui jiang~h aKey Laboratory of Cenozoic geology and Environment,institute of geology and geophysics,chinese academy of sciences,beijing 100029,china b Department of Oceanography and Coastal sciences,Louisiana State University,Baton Rouge,LA 70803,USA cinstitute of Tibetan Plateau Research,chinese academy of sciences,beijing 100085,china d State Key Laboratory of Lake Science and Environment,Nanjing institute of limnology and Geography,chinese academy of sciences,Nanjing 210008,china e Atmospheric sciences Research Center,State University of New York,Albany,NY 12203,USA f institute of Vertebrate Paleontology and Paleoanthropology,chinese academy of sciences,beijing 100044,china g institute of Hydrology and geology,chinese academy of Geological sciences,Zhengding 050803,china h State Key Laboratory of Estuarine and Coastal Research,East china Normal University,Shanghai 200062,china

This study investigates the distribution of modern pollen assemblages in the Qjnghai-Tibetan Plateau, china,based on surface soil samples collected at 1.02 sites along an altitudinal gradient of 1. -5500 m asl,where mean annual precipitation(MAP) ranges from 1. to 1.40 mm and mean annual temperature(MAT) from -1.to 21.5℃.A total of 1.3 pollen taxa were found with relative abundances greater than 1.in at least two *** correspondence analysis(CCA) was used to determine the main environmental variables influencing pollen *** results reveal that MAP is the most significant dominant ***,MAT,altitude(ALT),July temperature(MT7),and relative humidity(HHH) are also significant variables that clearly follow the gradients in the CCA ordination, suggesting that pollen assemblages probably not only reflect a single c{1.matic parameter,but also a variety of other c{1.matic inter-related parameters. Transfer functions,based on locally weighted weighted averaging(LWWA),were developed for MAP (R-boot = 0.89,RMSEP = 1.9 mm),MAT(R-boot = *** = 2.3℃),ALT(R-boot = 0.73, RMSEP = 597 m),HHH(R-boot = 0.82,RMSEP = 4.5%),and July mean precipitation(MP7)(R- boot = 0.87,RMSEP = 23 ram).Overall,our results confirm that pollen can provide re{1.able estimates of the primary c{1.matic *** app{1.cation of the LWWA model to the fossil records of chen Co Lake allowed quantitative inferences to be made about Holocene c{1.matic changes in the southern Tibetan Plateau,suggesting that LWWA is a robust ca{1.bration method for quantitative palaeo-environ-mental reconstruction based on pollen data in the regions.

关键词： Qinghai-Tibetan plateau Vegetation Pollen Transfer functions Holocene Climatic changes

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肉用西门塔尔牛群体生长曲线拟合及体重与体尺相关性分析的研究

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畜牧兽医学报 2018年第3期49卷 497-506页

作者：梁永虎朱波金生云宝金山徐凌洋陈燕高雪张路培高会江李俊雅中国农业科学院北京畜牧兽医研究所北京100193 锡林郭勒盟乌拉盖管理区兽医局乌拉盖026321

旨在对内蒙古乌拉盖地区肉用西门塔尔牛群体的体重和体尺等性状进行分析,研究其生长发育规律并构建通过体尺预测体重的回归方程。本研究测定了2 1.2头肉用西门塔尔牛从出生到20月龄的体重、体高、十字部高、体斜长、胸围和腹围,利用Logi... 详细信息

旨在对内蒙古乌拉盖地区肉用西门塔尔牛群体的体重和体尺等性状进行分析,研究其生长发育规律并构建通过体尺预测体重的回归方程。本研究测定了2 1.2头肉用西门塔尔牛从出生到20月龄的体重、体高、十字部高、体斜长、胸围和腹围,利用Logistic、Brody、Gompertz和Bertallanffy 4种模型拟合其生长曲线,分别估算出4种曲线方程中的相关参数,并进行体重与体尺的相关性与回归分析。结果表明,4种曲线模型对肉用西门塔尔牛体重和体尺生长过程均有较好的拟合度(R^2>0.98),但对于不同的性状,最佳拟合模型不同。体重与体尺相关关系表明,体重与体斜长、胸围、腹围的相关性较高,其中体重与胸围的相关系数最高(0.958 55)。其体尺与体重之间呈极显著正相关关系。预测体重回归方程为Y=-366.485 70+1.307 37 X_3+3.896 1. X_4-0.41. 50 X_5。研究表明,Gompertz和Bertallanffy两种模型对体重的拟合优于其他两种模型,Brody模型对体高、体斜长、胸围、腹围和十字部高的拟合效果均是最优。体重预测回归方程具有统计学意义,为肉用西门塔尔牛群体的进一步选育提供数据基础。

关键词：肉用西门塔尔牛生长曲线预测方程回归分析

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基于GIS的区域地质调查数字制图——以1.5万《里庄幅》为例

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沉积与特提斯地质 2002年第3期22卷 107-111页

作者：廖忠礼刘晓蓉陈乔廖光宇朱弟成成都地质矿产研究所

本文以 1.5万里庄幅为例 ,阐述了运用GIS系统对区调过程中各种资料的处理与编辑方法 ,并介绍了数字制图方法及工艺流程 ,提出了GIS系统在

关键词： GIS 区域地质调查数字制图里庄幅四川制图方法地质工作底图

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