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Millennial temperature reconstruction based on tree-ring widths of Qilian juniper from Wulan,Qinghai Province,China

Chinese Science Bulletin 2008年第24期53卷 3914-3920页

作者： ZHU HaiFeng ZHENG yonghong SHAO XueMei LIU XiaoHong XU Yan LIANG ErYuan Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environment and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China Graduate School of the Chinese Academy of Sciences Beijing 100049 China

The climate of the past 1000 years is an important context for evaluating the recent climate ***,there are few 1000-year-long climate reconstructions with annual resolution in the Qing-hai-Tibet *** this paper,a dendroclimatic analysis was conducted for the radial growth of Qilian juniper from the upper forest limit in Wulan,Qinghai *** results of correlation analysis between the tree-ring widths and the climate variables indicate that the growth of junipers at the upper forest limit is mainly limited by low temperatures of September,November and February of the pregrowth season,and July of the current growth *** is no significant correlation between the tree-ring widths and precipitation.A mean temperature from the previous year's September to the current year's April was reconstructed for the Wulan area since *** reconstruction can explain 40.8% of the instrumental variance in the calibration period(1856―2002).The reconstruction shows that the 20th century is the warmest 100 years,and the 1990s is the warmest decade during the past 1000 years,while the coldest 100 years and decade occur at 1600―1699 and 1642―1651,*** variations are verified well by the temperature reconstruction of the middle Qilian Mountain(QL) and the total organic carbon(TOC) in the Qinghai Lake *** comparison of our reconstruction with the annual temperature reconstruction of extra-tropical Northern Hemisphere suggests that the climate of Wulan during the Medieval Warm Period is of obvious regional specialty,but there was a good response to the climate of hemispheric scales during the recent 400 years.

关键词：西藏高原盆地桧属植物年轮温度记录

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Evaluating the integrated antimicrobial stewardship system of China by the assessment tool of WHO

Health Care Science

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Health Care Science 2022年第2期1卷 69-85页

作者： yonghong Xiao Wei Yu Tingting Xiao Ping Shen State Key Laboratory for Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesNational Medical Center of Infectious DiseasesThe First affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouChina

Objective:To fully understand the overall system and implementation of antimicrobial stewardship(AMS)at different levels in China,an evaluation according to the integrated AMS evaluation tool developed by World Health Organization(WHO)was ***:A comprehensive search on the AMS relevant government policies,regulations,scientific research results,public and social activities was conducted,and the implementation of AMS strategies in national,subnational and hospital level were evaluated by the standards of the ***:The results shew that the system construction,technical infrastructure and actions of AMS in China at the national level is relatively satisfied,but the AMS system needs to be further strengthened at the subnational and the medical institutional level,especially the integration of multidisciplinary teams and relevant departments;the implementation of professional intervention strategies,national education and publicity,professional education and training are relatively *** implementation is mainly promoted at the national level,and AMS in primary medical institutions is almost *** is necessary to carry out AMS at the provincial level and medical institutions as soon as *** focus is to establish a professional AMS team,prepare AMS guideline,implement AMS strategy,raise public awareness and ensure the long‐term and sustainable development of AMS in the ***:The Chinese government has established a system for AMS,and implemented a multisectoral coordinative ***,at the subnational and district levels,an AMS system and practice should be set up soon to promote the rational use of antibiotics.

关键词： antimicrobial stewardship China evaluation

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Premonitory phenomenon of El Nino event reflected in the observations of LOD and sea level

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Chinese Science Bulletin 2000年第24期45卷 2231-2236页

作者： ZHENG Dawei DING Xiaoli ZHOU yonghong CHEN Yongqi LI Zhilin LIAO Xinhao Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China Center of National Astronomical Observation Chinese Academy of SciencesBeijing 100012China Department of Land Surveying and Geo-Informatics Hong Kong Polytechnic UniversityHung HornKowloonHong KongChina

Data sets of the changes of the length of day, the sea surface temperature in the eastern Pacific and of the sea level in Hong long from tide gauge observations are used to analyze and reveal the reflections in the observations of the length of day and the sea level changes concerned with the premonitory phenomenon of next El Nino event. The results from this study indicate that a new El Nino event has been brewing with the ending of the strong La Nina event that started in early summer of 1998. The estimated formation period of the new El Nino event will begin before the end of 2000, and the peak period may be reached at around the end of 2001.

关键词： change of the length of day sea level change El Nino event.

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Investigation of stronger diurnal ERP signals in summer derived from the VLBI CONT08 campaign

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Chinese Science Bulletin 2010年第29期55卷 3274-3278页

作者： SUN Jing DAI ChunLi JIAN NianChuan ZHOU yonghong WANG GuangLi PING JinSong Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Beijing Aerospace Control Centre Beijing 100094 China

A series of very successful Continuous Very long Baseline Interferometry Campaigns(CONT) have been carried out at irregular intervals since *** of the goals is to support high-resolution earth rotation *** most recent CONT08 campaign was conducted with a network of 11 observatories at an increased recording rate of 512 Mbit per second over a fortnightly time span,from which stronger diurnal variations of the Earth Rotation Parameters(ERP) have been *** compared the high-frequency ERP from VLBI and GPS observations during CONT02,CONT05 and CONT08 with the atmospheric angular momentum functions derived from the National Centers for Environmental Prediction/National Center for Atmospheric(NCEP/NCAR) during these *** attribute the detected diurnal discrepancies between the theoretical models and the CONT08 observations to atmospheric excitations.

关键词： VLBI观测 ERP系统昼夜差异运动甚长基线干涉测量地球自转参数大气角动量信号

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MEMS Huygens Clock Based on Synchronized Micromechanical Resonators

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Engineering 2024年第5期36卷 124-131页

作者： Xueyong Wei Mingke Xu Qiqi Yang Liu Xu a yonghong Qi Ziming Ren Juan Ren Ronghua Huan Zhuangde Jiang State Key Laboratory for Manufacturing System Engineering Xi’an Jiaotong UniversityXi’an 710049China School of Construction Machinery Chang’an UniversityXi’an 710064China Department of Mechanics Zhejiang UniversityHangzhou 310027China

With the continuous miniaturization of electronic devices,microelectromechanical system(MEMS)oscillators that can be combined with integrated circuits have attracted increasing *** study reports a MEMS Huygens clock based on the synchronization principle,comprising two synchronized MEMS oscillators and a frequency compensation *** MEMS Huygens clock improved shorttime stability,improving the Allan deviation by a factor of 3.73 from 19.3 to 5.17 ppb at 1 s.A frequency compensation system based on the MEMS oscillator’s temperature-frequency characteristics was developed to compensate for the frequency shift of the MEMS Huygens clock by controlling the resonator *** effectively improved the long-term stability of the oscillator,with the Allan deviation improving by 1.6343105 times to 30.9 ppt at 6000 *** power consumption for compensating both oscillators simultaneously is only 2.85 mW·℃^(-1).Our comprehensive solution scheme provides a novel and precise engineering solution for achieving high-precision MEMS oscillators and extends synchronization applications in MEMS.

关键词： Frequency stability Huygens clock MEMS Oscillator Synchronization

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The mass recognizing property of DLC film for formic acid vapors

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Chinese Science Bulletin 1998年第15期43卷 1307-1311页

作者： yonghong Yan Yun Zeng Jiannan Xiang Xia Yin Jiucheng Jin Zengzhang Che Hunan Univ Inst Chem Dept Phys Changsha 410082 Peoples R China

The carbon films are prepared by r.f. plasma method with n butylamine as carbon source. The analysis of Raman spectrosecopy shows that this kind of carbon film has diamond_like structure, and IR spectroscopy measurement indicats that there are SP 2 bonding, SP 3 bonding and amino group in the film. It is the existence of amino group and hydrogen atom that cause the amorphous structure and the deformation of bonding to increase, thus leading the Raman spectrum to form a broad absorption band. The quartz crystal microbalance (QCM) deposited with this kind of carbon film as recognizing coating is very sensitive to formic acid vapors. This QCM sensor has good reproducibility, high stability, rapid response and long lifetime.

关键词： carbon film DLC structure amino group mass recognizing.

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Taxonomic Revision of Raorchestes menglaensis(Kou,1990)(Amphibia:Anura),with Descriptions of Two New Species from Yunnan,China

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Asian Herpetological Research 2020年第4期11卷 263-281页

作者： Ke JIANG Jinlong REN Jian WANG Junfeng GUO Zeng WANG yonghong LIU Dechun JIANG Jiatang LI CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province Chengdu Institute of BiologyChinese Academy of SciencesChengdu 610041SichuanChina Southeast Asia Biodiversity Research Institute Chinese Academy of SciencesYezinNay Pyi Taw 05282Myanmar College of Life Science and Technology Honghe UniversityMengzi 661199YunnanChina Xishuangbanna Tropical Botanical Garden Chinese Academy of SciencesXishuangbanna 666303YunnanChina University of Chinese Academy of Sciences Beijing 100049China CAS Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunming 650223YunnanChina

Raorchestes is a group of Bush frogs mainly distributed in South and Southeast Asia that are poorly recognized by morphological *** recognize the true ***(Kou) based on 10 specimens newly collected from the type *** expanded description is also provided,and we delist the recently reported record,***(Boulenger) from *** with morphological and molecular data,two new species are respectively described from Menghai and Lvchun,Yunnan,*** hillisi *** distinguished from all other congeners by the following combination of morphological characters:(1) small body sized(males 15.9-17.7 mm,n=7;female 17.5 mm,n=1);(2) head longer than wide;(3) snout longer than eye diameter;(4) the tip of upper jaws slightly notched;(5) internasal space slightly less than interorbital space;(6) tympanum distinct;(7)fingers lacking lateral dermal fringe;(8) outside of toe Ⅰ and both sides of toe Ⅱ lacking lateral dermal fringe,other toes having weak lateral dermal fringes;(9) rudimentary web on toes;(10) lacking a series of tubercles along the outer sides of forearm and foot;(11) discs of fingers and toes not *** huanglianshan *** distinguished from all other congeners by the following combination of morphological characters:(1) small body size(males 17.0-19.6 mm,n=12;female 21.5 mm,n=1);(2) head slightly wider than long or equal;(3) snout longer than eye diameter;(4)the tip of upper jaws slightly notched;(5) internasal space distinctly less than interorbital space(6) tympanum distinct;(7) fingers lacking lateral dermal fringe;(8) toes lacking lateral dermal fringe;(9) rudimentary web on toes;(10)lacking a series of tubercles along the outer sides of forearm and foot;(11) discs of all fingers and toes orange or parts of them orange in life.

关键词： bush frog distribution Raorchestes hillisi sp.nov. Raorchestes huanglianshan sp.nov. Raorchestes parvulus revision taxonomy

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Experimental study on strain field evolution around a simulated thrust fault

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Earthquake Science 2023年第1期36卷 40-51页

作者： yonghong Zhao Yanjun Xiao Jiaying Yang Xiaofan Li Andong Xu School of Earth and Space Sciences Peking UniversityBeijing 100871China State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 100083China SinoPEC Key Laboratory of Seismic Elastic Wave Technology Beijing 100083China SinoPEC Petroleum Exploration and Production Research Institute Beijing 100083China

Earthquakes result from continuous geodynamic processes.A topic of significant interest for the scientific community is to elaborate on the phenomena governing the faulting and fracturing of crustal ***,in this study,uniaxial compressive shear failure experiments were conducted on Fangshan marble rock samples with a prefabricated slot to simulate thrust *** center of each marble plate(105 mm × 80 mm × 5 mm) was engraved with a 30-mm long double-sided nonpenetrating slot(depth:2 mm,width:0.5 mm).The deformation and destruction processes of the rock surface were recorded using a high-speed *** digital image correlation method was used to calculate the displacement and strain distribution and variation at different loading *** accumulative and incremental displacement fields u and v,strain field exand e_(y),and shear strain e_(xy) were *** the loading level reached its ultimate value,the strain field was concentrated around the prefabricated *** concentration reached a maximum at the ends of the prefabricated *** magnitude of shear strain reached *** experiment contributes to our understanding of the dynamic process of active faulting.

关键词： experimental study deformation field evolution fracture process earthquake

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Three-dimensional crustal velocity structure model of the middle-eastern north China Craton (HBCrust1.0)

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Science China Earth Sciences 2016年第7期59卷 1477-1488页

作者： DUAN yonghong WANG FuYun ZHANG XianKang LIN JiYan LIU Zhi LIU BaoFeng YANG ZhuoXin GUO WenBin WEI YunHao Geophysical Exploration Center China Earthquake Administration

Lithosphere thinning and destruction in the middle-eastern North China Craton(NCC), a region susceptible to strong earthquakes, is one of the research hotspots in solid earth science. All 42 seismic wide-angle reflection/refraction profiles have been completed in the middle-eastern NCC. We collect all the 2-D profiling results and perform gridding of the velocity and interface depth data, building a 3-D crustal velocity structure model for the middle-eastern NCC, named HBCrust1.0, by using the Kriging interpolation method. Our result shows that the first-arrival times calculated by HBCust1.0 fit well with the observations. The result demonstrates that the upper crust is the main seismogenic layer, and the brittle-ductile transition occurs at depths near interface C(the interface between upper and lower crust). The depth of interface Moho varies beneath the source area of the Tangshan earthquake, and a low-velocity structure is found to extend from the source area to the lower crust. Based on these observations, it can be inferred that stress accumulation responsible for the Tangshan earthquake may have been closely related to the migration and deformation of the mantle materials. Comparisons of the average velocities of the whole crust, the upper and the lower crust show that the average velocity of the lower crust under the central part of the North China Basin(NCB) in the east of the craton is obviously higher than the regional average. This high-velocity probably results from long-term underplating of the mantle magma.

关键词： Middle-eastern of the North China Craton DSS profile 3-D P-wave velocity structure Earthquake Craton destruction

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Identification and functional analysis of multiple isoforms of epilepsy related protein FMRP

Identification and functional analysis of multiple isoforms ...

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中华医学会神经病学分会第十次全国脑电图与癫痫诊治进展高级讲授班及学术研讨会

作者： Wei feng long yuesheng yi yonghong zhao yihua liao weiping 广州医科大学附属第二医院

Purpose 20%of Fragile X syndrome(FXS)patients suffer seizures during *** X mental retardation protein(FMRP)is a global regulator of translation in neurons and an important factor in synaptic plasticity,absence of which results in *** FMRP isoforms may have important differences in their expression and function,lead to various susceptibility of epilepsy.

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