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Evaluation of CMIP6 HighResMIP models in simulating precipitation over Central Asia

Advances in Climate Change Research 2022年第1期13卷 1-13页

作者： liang-liang LI jian LI Ru-Cong YU College of Atmospheric Sciences Lanzhou UniversityLcmzhou 730000China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Research Center for Disastrous Weather Over Hengduan Mountains&Low-Latitude Plateau China Meteorological AdministrationKunming 650034China

The High Resolutio n Model Intercomparison Project(HighResMIP)experiment within the Coupled Model In tercomparison Project Phase 6(CMIP6),for the first time,has provided an opportunity to evaluate the performance of climate models over complex *** on the HighResMIP's historical simulations of atmospheric general circulation models,the performances of global high-resolution models,with a horizontal resolution finer than 50 km,in representing precipitation over Central Asia were evaluated using rain gauge observation *** the models successfully reproduce the large precipitation regions that are located over the mountainous areas and Northern Central ***,nearly all the models overestimate precipitation frequency over Central Asia and large overestimations of precipitation amount and frequency are located over the mountainous *** the HighResMIP multi-model ensemble mean performs better than all individual models at simulating the spatial pattern of precipitation frequency,it is inferior to HadGEM3-GC31-HM and ECMWF-IFS-HR at simulating that of precipitation *** simulation performance exhibits remarkable regional *** the Qilian Mountains,the relationship between precipitation and elevation is totally captured by climate *** contrast,over the Tianshan Mountains,the models fail to simulate the decrease in precipitation frequency after elevation higher than the maximum precipitation *** models successfully reproduce the annual cycle shape of precipitation amount over the Southern Central Asia,Qilian Mountains and Tianshan Mountains,but fail to reproduce it over the Northern Central *** than half of the high-resolution GCMs have a reduced bias relative to the corresponding low-resolution *** performances of most high-resolution GCMs in simulating precipitation pattern are well over the Tianshan Mountains.

关键词： CMIP6 HighResMIP Model evaluation Precipitation Elevation Central Asia

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Trends of obesity and overweight among children and adolescentsin China

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World Journal of Pediatrics 2023年第12期19卷 1115-1126页

作者： Ye Hong Rahim Ullah jian‑Bing Wang Jun‑fen Fu Department of Endocrinology Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthNational Children’s Regional Medical CenterHangzhou 310052China Zhejiang University School of Medicine Hangzhou 310052China

Background Recent decades have shown a rapid increase in the prevalence of overweight and obesity among Chinese children based on several national *** due to the coronavirus disease 2019 outbreak have worsened its *** review updates the trends in the prevalence of overweight and obesity among Chinese children and adolescents and analyzes the underlying reasons to provide evidence for better policy *** Studies published in English and Chinese were retrieved from PubMed,Google Scholar,China National Knowl-edge Infrastructure *** The prevalence of overweight and obesity has been increasing for decades and varies with age,sex and geography but is more pronounced in primary school *** increase in obesity in boys appeared to be slower,whereas that in girls showed a declining *** northern areas of China have persistently maintained the highest levels of obesity with a stable trend in recent ***,the prevalence in eastern regions has dramatically ***,the overall prevalence of obesity in children has shown a stabilizing trend in recent ***,the occurrence of obesity-related metabolic diseases *** effect of migrants floating into east-coast cities should not be *** The high prevalence of overweight and obesity among Chinese children and adolescents persists but with vary-ing ***-related metabolic diseases occur more frequently despite a stable trend of *** factors are responsible for the changing ***,comprehensive and flexible policies are needed to effectively manage and prevent the burden of obesity and its related complications.

关键词： Adolescents Children Obesity Overweight Policy

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Unlocking the stable interface in aqueous zinc-ion battery with multifunctional xylose-based electrolyte additives

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Journal of Energy Chemistry 2025年第1期100卷 770-778页

作者： Xiaoqin Li jian Xiang Lu Qiu Xiaohan Chen Yinkun Zhao Yujue Wang Qu Yue Taotao Gao Wenlong Liu Dan Xiao Zhaoyu Jin Panpan Li Institute for Advanced Study Chengdu University School of Mechanical Engineering Chengdu University College of Food and Biological Engineering Chengdu University Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China College of Materials Science and Engineering Sichuan University

The growth of dendrites and the side reactions occurring at the Zn anode pose significant challenges to the commercialization of aqueous Zn-ion batteries（AZIBs）. These challenges arise from the inherent conflict between mass transfer and electrochemical kinetics. In this study, we propose the use of a multifunctional electrolyte additive based on the xylose（Xylo） molecule to address these issues by modulating the solvation structure and electrode/electrolyte interface, thereby stabilizing the Zn anode. The introduction of the additive alters the solvation structure, creating steric hindrance that impedes charge transfer and then reduces electrochemical kinetics. Furthermore, in-situ analyses demonstrate that the reconstructed electrode/electrolyte interface facilitates stable and rapid Zn2+ion migration and suppresses corrosion and hydrogen evolution reactions. As a result, symmetric cells incorporating the Xylo additive exhibit significantly enhanced reversibility during the Zn plating/stripping process, with an impressively long lifespan of up to 1986 h, compared to cells using pure ZnSO4electrolyte. When combined with a polyaniline cathode, the full cells demonstrate improved capacity and long-term cyclic stability. This work offers an effective direction for improving the stability of Zn anode via electrolyte design, as well as highperformance AZIBs.

关键词： Solvation

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A Note on a Quadratic Rational Map with Two Siegel Disks

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Acta Mathematica Sinica,English Series 2010年第7期26卷 1393-1402页

作者： liang SHEN Sheng jian WU Department of Mathematics Beijing Institute of Technology Beijing 100081 P. R. China LMAM School of Mathematical Sciences Peking University Beijing 100871 P. R. China

Suppose f（z） is a quadratic rational map with two Siegel disks. If the rotation numbers of the Siegel disks are both of bounded type, the Hausdorff dimension of the Julia set satisfies Dim （J（f））〈2.

关键词： Hausdorff dimension Siegel disk porous set

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Assessing the impacts of natural conditions and human activities on terrestrial water storage in Loess Plateau,China

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Journal of Mountain Science 2023年第7期20卷 1921-1939页

作者： WANG Cheng-xi YAN jian-wu liang Wei SUN Shao-bo GOU fen LI Xiao-fei LUO Yuan-yuan WANG feng-jiao School of Geography and Tourism Shaanxi Normal UniversityXi'an 710119China National Demonstration Center for Experimental Geography Education Shaanxi Normal UniversityXi'an 710119China Institute of Surface-Earth System Science Tianjin UniversityTianjin 300072China

The gravity recovery and climate experiment(GRACE)has emerged as a crucial source of land water storage information in hydrological analysis and *** factors contribute to regional terrestrial water storage(TWS),resulting in a complex *** the Loess Plateau region,the continuous alteration of natural conditions and profound impact of human activities have posed a serious threat to the natural ecosystem,leading to an escalating trend of TWS *** the specific analysis of how natural conditions and human activities affect TWS represents a pressing *** study employed the residual analysis method to discern the contribution rates of natural conditions and human activities,elucidated the spatial and temporal changes associated with each factor,and ascertained their individual *** findings indicated that TWS on the Loess Plateau exhibited a downward trend of-4.89 mm·a^(-1)from 2003 to *** combined effects of climate change and human activities accounted for alterations in water resource reserves across most areas of the Loess Plateau,with human activities predominantly driving these *** emerged as the primary natural factor influencing TWS variations,and NDVI demonstrated a positive feedback effect on TWS at approximately 30%.Substantial spatial disparities in TWS existed within the Loess Plateau,with human activities identified as the primary cause for the decreasing *** restoration plays a positive role in saving water resources in the Loess Plateau to some extent,and vegetation growth exceeding the regional load will lead to water shortage.

关键词： Terrestrial water storage Residual analysis Human activity the Loess Plateau

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Application of Bipartite Entangled States to Quantum Mechanical Version of Complex Wavelet Transforms

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Communications in Theoretical Physics 2006年第4期45卷 609-613页

作者： FAN Hong-Yi LU Hai-liang XU Xue-fen Department of Physics Shanghai Jiao Tong University Shanghai 200030 China Department of Material Science and Engineering University of Science and Technology of China Hefei 230026 China Department of Basic Courses Jiangsu Teachers University of Technology Changzhou 213001 China

We introduce the bipartite entangled states to present a quantum mechanical version of complex wavelet transform. Using the technique of integral within an ordered product of operators we show that the complex wavelet transform can be studied in terms of various quantum state vectors in two-mode Fock space. In this way the creterion for mother wavelet can be examined quantum-mechanically and therefore more deeply.

关键词： entangled states complex wavelet transform

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Joint Beamforming for Intelligent Reflecting Surface Aided Wireless Communication Using Statistical CSI

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China Communications 2020年第8期17卷 147-157页

作者： jian Dang Zaichen Zhang liang Wu National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China Purple Mountain Laboratories Nanjing 211111China

A joint beamforming algorithm is proposed for intelligent reflecting surface(IRS) aided wireless multiple-input multiple-output(MIMO) communication using statistical channel state information(CSI). The beamforming is done by alternatively optimizing the IRS reflecting coefficients and the covariance matrix of the transmit symbol vector, such that the ergodic rate of the system is maximized. The algorithm utilizes only the second order momentum of the random channel matrices and does assume any specific channel distribution, leading to a general framework for ergodic rate evaluation. A practical channel correlation model is configured to validate the performance gain. It is found that the rate can be enlarged by the joint optimization algorithm, however, the gain over that of randomly deployed reflecting coefficients depends highly on the relative correlation distance of the IRS elements and the spatial position of the IRS. In particular, the results suggest that IRS should be placed in the vicinity of either the transmitter or the receiver. Placing IRS far away from those positions is non-beneficial.

关键词： MIMO beamforming statistical CSI intelligent reflecting surface(IRS) ergodic rate

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Thermodynamic Properties of Linear Protein Solutions:an Application to Type Ⅰ Antifreeze Protein Solutions

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Chemical Research in Chinese Universities 2012年第6期28卷 1070-1073页

作者： LI Li-fen liang Xi-xia LI Qian-zhong Department of Physics lnner Mongolia University Hohhot 010021 P. R. China Department of Basic Curriculum North China Institute of Science and Technology Beijing 101601 P. R. China

A statistical thermodynamic theory of linear protein solutions was proposed with the aid of a lattice model and applied to type Ⅰ antifreeze protein（AFPI） *** numerical results for several AFPI solutions show that the Gibbs function of the solution has a minimum at a certain protein concentration,but the protein chemical potential increases with increasing the *** influences of temperature and protein chain length on the AFPI chemical potential were also *** evaluation for the colligative depression of the freezing point confirms that the antifreeze action should be recognized as *** theoretical deduction for the concentration dependence of the thermal hysteresis activity coincides qualitatively with the previous experimental and theoretical results.

关键词： Antifreeze protein solution Gibbs function Chemical potential Thermal hysteresis

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Application of tensor CSAMT with high-power orthogonal signal sources in Jiama porphyry copper deposit,South Tibet

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China Geology 2023年第1期6卷 37-49页

作者： Peng-liang Yu Ting Qu Ri-zheng He jian-li Liu Su-fen Wang Xiao-long Chen Shaanxi Geology and Mining Geophysical and Geoehemical Prospecting Team Co. Ltd.Xi’an 710043China Chinese Academy of Geological Sciences Beijing 100037China

The Jiama porphyry copper deposit in Tibet is one of the proven supergiant copper deposits in the Qinghai-Tibet Plateau at present,with the reserves of geological resources equivalent to nearly 20×10^(6) ***,it features wavy and steep terrain,leading to extremely difficult field operation and heavy *** study attempts to determine the effects of the tensor controlled-source audiomagnetotellurics(CSAMT)with high-power orthogonal signal sources(also referred to as the high-power tensor CSAMT)when it is applied to the deep geophysical exploration in plateaus with complex terrain and mining areas with strong *** test results show that the high current provided by the highpower tensor CSAMT not only greatly improved the signal-to-noise ratio but also guaranteed that effective signals were received in the case of a long transmitter-receiver ***,the tensor data better described the anisotropy of deep geologic *** addition,the tests also show that when the transmitting current reaches 60 A,it is still guaranteed that strong enough signals can be received in the case of the transmitter-receiver distance of about 25 km,sounding curves show no near field effect,and effective exploration depth can reach 3 *** 2D inversion results are roughly consistent with drilling results,indicating that the high-power tensor CSAMT can be used to achieve nearly actual characteristics of underground electrical ***,this method has great potential for application in deep geophysical exploration in plateaus and mining areas with complex terrain and strong interference,*** study not only serves as important guidance on the prospecting in the Qinghai-Tibet Plateau but also can be used as positive references for deep mineral exploration in other areas.

关键词： Jiama porphyry copper deposit Supergiant copper polymetallic deposit Tensor CSAMT of 150 kw High power 2D inversion Deep prospecting Mineral exploration engineering Xizang(Tibet)

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Integrating Factors and Conservation Theorems for the Nonholonomic Singular Lagrange System

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Communications in Theoretical Physics 2007年第5X期48卷 791-794页

作者： ZHAO Shu-Hong liang Li-Fu QIAO Yong-fen School of Civil Engineering of Harbin Engineering University Harbin 150001 China Engineering College of Northeast Agricultural University Harbin 150030 China

We present a general approach to the construction of conservation laws for the nonholonomic singular Lagrange system. Firstly, the differential equations of motion of the system are written, the definition of integrating factors is given for the system. Next, the necessary conditions for the existence of the conserved quantity are studied in detail. Finally, the conservation theorem and its inverse are established for the system, an example is given to illustrate the application of the result.

关键词： analytical mechanics singular system integrating factor conserved quantity

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