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Megafossils of Betulaceae from the Oligocene of Qaidam Basin and their paleoenvironmental and phytogeographic implications

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Plant Diversity 2024年第1期46卷 101-115页

作者： Tao Yang jia-Hao Cai Yan-Zhi Dai Hong-Yu Chen Lei Han li Zhang Wei-Yu liang Xu-Jun li wen-jia li Jing-Yu Wu San-Ping Xie De-Fei Yan School of Earth Sciences and Key Laboratory of Mineral Resources in Western China(Gansu Province) Lanzhou UniversityLanzhou 730000China Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjing 210008China Center for Research and Education on Biological Evolution and Environments School of Earth Sciences and EngineeringNanjing UniversityNanjing 210023China

Understanding the paleoenvironment and phytogeographical history of the Tibetan Plateau,China relies on discovering new plant *** Qaidam Basin has long been regarded as an ideal‘field laboratory’to investigate the paleoclimate and paleobiological evolution of the northern Tibetan ***,fossil angiosperms from the Qaidam Basin are rare,and our knowledge of its paleovegetation is ***,we report fossil leaves and fruits of Betulaceae found from the Oligocene Shangganchaigou Formation of northwestern Qaidam Basin(Huatugou area).Comparative morphological analysis led us to assign the fruits to the Betula subgenus Betula and the leaves to Carpinus *** findings,together with other reported fossil plants from the same locality,reveal a close floristic linkage between the Qaidam Basin and Europe during the *** northern pathway of this floristic exchange may have crossed through the Qaidam Basin during the late *** floristic linkage may have been facilitated by the continuous narrowing of the Turgai Strait and stronger westerlies,which transported moisture and provided favorable climatic ***,fossil plants collected from the Qaidam Basin suggest that during the Oligocene this region had warm and humid deciduous broad-leaf forest,which differs from the region’s modern vegetation and indicates that the Qaidam Basin may have been a suitable region for these plants to flourish and spread during the Oligocene.

关键词： Paleoenvironment Biogeography Betulaceous fossil Qaidam basin Tibetan Plateau Oligocene

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Main focus of parents of children with attention deficit hyperactivity disorder and the effectiveness of early clinical screening

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World Journal of Clinical Cases 2024年第19期12卷 3752-3759页

作者： jia-wen li Ke Gao Xiao-Yun Yang Zhi-Fei li Department of Paediatrics The First Affiliated Hospital of Ningbo UniversityNingbo 315021Zhejiang ProvinceChina Department of Paediatrics The First Affiliated Hospital of Bengbu Medical UniversityBengbu 233004Anhui ProvinceChina

BACKGROUND Attention deficit hyperactivity disorder(ADHD)is a common mental and behavioral disorder among *** To explore the focus of attention deficit hyperactivity disorder parents and the effectiveness of early clinical screening METHODS This study found that the main directions of parents seeking medical help were short attention time for children under 7 years old(16.6%)and poor academic performance for children over 7 years old(12.1%).We employed a two-stage experiment to diagnose *** the 5683 children evaluated from 2018 to 2021,360 met the DSM-5 *** diagnosed with ADHD underwent assessments for letter,number,and figure *** the exclusion of ADHD-H diagnoses,the detection rate rose to 96.0%,with 310 out of 323 cases *** This study yielded insights into the primary concerns of parents regarding their children's symptoms and validated the efficacy of a straightforward diagnostic test,offering valuable guidance for directing ADHD treatment,facilitating early detection,and enabling timely *** research delved into the predominant worries of parents across various age ***,we showcased the precision of the simple exclusion experiment in discerning between ADHD-I and ADHD-C in *** Our study will help diagnose and guide future treatment directions for ADHD.

关键词： Attention deficit hyperactivity disorder Children Parents Direction of attention Simple test

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Study of the response of 10B-doped MCP to wide-energy range neutrons from eV to MeV

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Nuclear Science and Techniques 2024年第8期35卷 132-141页

作者： Qiang li li‑jiao Wang Xiang‑Biao Qiu Jing‑wen li Wei Xu Tao li Ze‑Bin lin Chang‑Jun Ning Yong‑Hao Chen Rui‑Rui Fan Kang Sun Jing‑Yu Tang Rong Zhang Han‑Tao Jing Bo Mei Qi An Hao‑Fan Bai jiang‑Bo Bai Jie Bao Ping Cao Qi‑Ping Chen Zhen Chen Zeng‑Qi Cui An‑Chuan Fan Chang‑Qing Feng Fan‑Zhen Feng Ke‑Qing Gao Min‑Hao Gu Chang‑Cai Han Zi‑Jie Han Guo‑Zhu He Yong‑Cheng He Yang Hong Yi‑Wei Hu Han‑Xiong Huang Wei‑Hua jia Hao‑Yu jiang Wei jiang Zhi‑Jie jiang Zheng‑Yao Jin ling Kang Bo li Chao li Gong li jia‑wen li Xiao li Yang li Jie liu Rong liu Shu‑Bin liu Guang‑Yuan Luan Bin‑Bin Qi Jie Ren Zhi‑Zhou Ren Xi‑Chao Ruan Zhao‑Hui Song Zhi‑Xin Tan Sheng‑Da Tang Peng‑Cheng Wang Zhao‑Hui Wang Zhong‑Wei wen Xiao‑Guang Wu Xuan Wu li‑Kun Xie Yi‑Wei Yang Han Yi Yong‑Ji Yu Guo‑Hui Zhang lin‑Hao Zhang Mo‑Han Zhang Qi‑Wei Zhang Xian‑Peng Zhang Yu‑liang Zhang Yue Zhang Zhi‑Yong Zhang Mao‑Yuan Zhao Lu‑Ping Zhou Zhi‑Hao Zhou Ke‑Jun Zhu Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China North Night Vision Science&Technology(Nanjing)Research Institute Co.Ltd. Nanjing 211106China Sino‑French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Neutron-sensitive microchannel plates(nMCPs)have applications in neutron detection,including energy spectrum measurements,neutron-induced cross sections,and neutron imaging.10B-doped MCPs(B-MCPs)have attracted significant attention owing to their potential for exhibiting a high neutron detection efficiency over a large neutron energy *** spatial and temporal resolutions are useful for neutron energy-resolved ***,their practical applications still face many technical *** this study,a B-MCP with 10 mol%10B was tested for its response to wide-energy neutrons from eV to MeV at the Back-n white neutron source at the China Spallation Neutron *** neutron detection efficiency was calibrated at 1 eV,which is approximately 300 times that of an ordinary MCP and indicates the success of 10 B *** factors that caused the reduction in the detection efficiency were simulated and *** neutron energy spectrum obtained using B-MCP was compared with that obtained by other measurement methods,and showed very good consistency for neutron energies below tens of *** response is more complicated at higher neutron energy,at which point the elastic and nonelastic reactions of all nuclides of B-MCP gradually become *** is beneficial for the detection of neutrons,as it compensates for the detection efficiency of B-MCP for high-energy neutrons.

关键词： Neutron radiation image 10B-doped MCP Neutron response Wide-energy range neutrons

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Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n

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Nuclear Science and Techniques 2024年第1期35卷 178-187页

作者： Sheng-Da Tang Yong-Hao Chen Jing-Yu Tang Rui-Rui Fan Qiang li Gong li Dong liu Zheng-Yao Jin Xing-Zhu Cui Tian-Xiang Chen Yi-Wei Yang Rong liu Han Yi Yang li Zhen Yang Qi An Hao-Fan Bai jiang-Bo Bai Jie Bao Ping Cao Qi-Ping Chen Zhen Chen Zeng-Qi Cui An-Chuan Fan Chang-Qing Feng Fan-Zhen Feng Ke-Qing Gao Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He Yong-Cheng He Yang Hong Yi-Wei Hu Han-Xiong Huang Wei-Hua jia Hao-yu jiang Wei jiang Zhi-jie jiang ling Kang Bo li Chao li jia-wen li Xiao li Jie liu Shu-Bin liu Guang-Yuan Luan Chang-Jun Ning Bin-Bin Qi Jie Ren Zhi-Zhou Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Xin Tan li-jiao Wang Peng-Cheng Wang Zhao-Hui Wang Zhong-Wei wen Xiao-Guang Wu Xuan Wu li-Kun Xie Yong-Ji Yu Guo-Hui Zhang lin-Hao Zhang Mo-Han Zhang Qi-Wei Zhang Xian-Peng Zhang Yu-liang Zhang Yue Zhang Zhi-Yong Zhang Mao-Yuan Zhao Lu-Ping Zhou Zhi-Hao Zhou Ke-Jun Zhu Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Institute of High-Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China USTC Archaeometry Laboratory University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Nondestructive and noninvasive neutron assays are essential applications of neutron *** resonance transmission analysis(NRTA)is a powerful nondestructive method for investigating the elemental composition of an *** back-streaming neutron line(Back-n)is a newly built time-of-flight facility at the China Spallation Neutron Source(CSNS)that provides neutrons in the eV to 300 MeV range.A feasibility study of the NRTA method for nuclide identification was conducted at the CSNS Back-n via two test *** results demonstrate that it is feasible to identify different elements and isotopes in samples using the NRTA method at *** study reveals its potential future applications.

关键词： CSNS White neutron beam NRTA Nuclide identification Nondestructive method

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Synthesis of gold nanocubes/PEI-wrinkled CoSe_(2) nanomaterials and its application in electrochemical immunosensors for detection of dipropyl phthalate

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Rare Metals 2021年第5期40卷 1099-1109页

作者： Bao-Shan He jia-wen li School of Food Science and Technology Henan University of TechnologyZhengzhou 450001China

CoSe_(2) nanosheet materials with a wrinkled sheet structure and large surface area were synthesized via a simple hydrothermal *** polyethyleneimine(PEI)was used to functionalize wrinkled CoSe_(2)(w-CoSe_(2))to make gold nanocubes(AuNCs)uniformly anchored onto the surface of PEI-w-CoSe_(2) via Au-N *** its application in electrochemical immunosensors for the detection of dipropyl phthalate(DPrP)was *** obtained material was characterized by the Fourier transform infrared spectroscopy(FTIR),transmission electron microscope(TEM),energydispersive spectroscopy(EDS),X-ray diffraction(XRD)and Raman *** effective surface area and conductivity of the electrode were enhanced by the introduction of AuNCs/PEI-w-CoSe_(2) *** voltammetry(CV),differential pulse voltammetry(DPV)and electrochemical impedance spectroscopy(EIS)were used to characterize the performance of *** DPrP binds to antibodies via the antigen-antibody interaction,[Fe(CN)6]3-/4-was used as a signal probe to monitor the change of oxidation current of different DPrP *** optimal conditions,the electrochemical responses of the prepared immunosensor were linear when the DPrP concentrations ranged from 1×10^(-11) to 1×10^(-5) mol·L-1,with a detection limit of 1.39×10^(-12) mol·L^(-1).The coefficient of determination(R2)is 0.995,indicating that the degree of fitting is ***,the constructed immunosensor exhibited acceptable reproducibility,selectivity,and ***,it may be found that the composite material has good application prospects in the electrochemical sensors field.

关键词： CoSe_(2)nanosheets Polyethyleneimine Gold nanocubes Dipropyl phthalate

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A novel blind deconvolution algorithm using single frequency bin

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第8期8卷 1271-1276页

作者： ZHANG Gui-bao li jia-wen li Cong-xin National Die ＆ Mold CAD Engineering Research Center Shanghai Jiao Tong University Shanghai 200030 China

Former frequency-domain blind devolution algorithms need to consider a large number of frequency bins and recover the sources in different orders and with different amplitudes in each frequency bin,so they suffer from permutation and amplitude indeterminacy troubles. Based on sliding discrete Fourier transform,the presented deconvolution algorithm can directly recover time-domain sources from frequency-domain convolutive model using single frequency bin. It only needs to execute blind sepa-ration of instantaneous mixture once there are no permutation and amplitude indeterminacy troubles. Compared with former algorithms,the algorithm greatly reduces the computation cost as only one frequency bin is considered. Its good and robust per-formance is demonstrated by simulations when the signal-to-noise-ratio is high.

关键词： Blind deconvolution Single frequency bin Convolutive mixture

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Low-Enthalpy and High-Entropy Polymer Electrolytes for li-Metal Battery

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Energy & Environmental Materials 2024年第1期7卷 91-99页

作者： Haitao Zhang Yuchen Wang Junfeng Huang wen li Xiankan Zeng Aili jia Hongzhi Peng Xiong Zhang Weiqing Yang Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China

lonic-conductive solid-state polymer electrolytes are promising for the development of advanced lithium batteries yet a deeper understanding of their underlying ion-transfer mechanism is needed to improve *** we demonstrate the low-enthalpy and high-entropy(LEHE)electrolytes can intrinsically generate remarkably free ions and high mobility,enabling them to efficiently drive lithium-ion *** LEHE electrolytes are constructed on the basis of introducing CsPbl_(3)perovskite quantum dots(PQDs)to strengthen PEO@liTFSI *** extremely stable cycling>1000 h at 0.3 mA cm^(-2)can be delivered by LEHE ***,the as-developed li|LEHE|liFePO_(4)cell retains 92.3%of the initial capacity(160.7 mAh g^(-1))after 200 *** cycling stability is ascribed to the suppressed charge concentration gradient leading to free lithium *** is realized by a dramatic increment in lithium-ion transference number(0.57 vs 0.19)and a significant decline in ion-transfer activation energy(0.14 eV vs 0.22 eV)for LEHE electrolytes comparing with PEO@liTFSI *** CsPbl_(3)PQDs promote highly structural disorder by inhibiting crystallization and hence endow polymer electrolytes with low melting enthalpy and high structural entropy,which in turn facilitate long-term cycling stability and excellent rate-capability of lithium-metal batteries.

关键词： charge concentration gradient lithium dendrites lithium-metal battery low-enthalpy and high-entropy polymer electrolyte

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不同TyG水平糖尿病患者血糖波动、维生素D水平、铁代谢失衡特征及其与糖尿病并发症的相关性分析

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临床和实验医学杂志 2024年第16期23卷 1689-1693页

作者：贾文丽李海峰金荣荣巴彦淖尔市医院内分泌科内蒙古巴彦淖尔015000 巴彦淖尔市医院健康管理科内蒙古巴彦淖尔015000

目的探讨不同甘油三酯血糖(TyG)水平糖尿病患者血糖波动、维生素D水平、铁代谢失衡特征及其与糖尿病并发症的相关性。方法回顾性选择2019年1月至2023年12月来巴彦淖尔市医院诊治的2型糖尿病患者240例,根据TyG四分位水平分为Q1组:6.41≤T... 详细信息

目的探讨不同甘油三酯血糖(TyG)水平糖尿病患者血糖波动、维生素D水平、铁代谢失衡特征及其与糖尿病并发症的相关性。方法回顾性选择2019年1月至2023年12月来巴彦淖尔市医院诊治的2型糖尿病患者240例,根据TyG四分位水平分为Q1组:6.41≤TyG0.8,P<0.05。结论糖尿病患者的TyG水平与血糖水平、维生素D水平、铁代谢失衡特征、糖尿病并发症显著相关,TyG水平越高,血糖水平越高,维生素D水平越低,铁代谢失衡越严重,TyG、维生素D、铁蛋白及三者联合可被用于糖尿病并发症的预测。

关键词： TyG 血糖水平维生素D 铁代谢失衡预测价值

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Structure engineering of cathode host materials for li-S batteries

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Rare Metals 2024年第4期43卷 1370-1389页

作者： jia-Jun Long Hua Yu wen-Bo liu School of New Energy and Materials Southwest Petroleum UniversityChengdu610500China School of Mechanical Engineering Sichuan UniversityChengdu610065China

Although lithium-sulfur batteries are one of the favorable candidates for next-generation energy storage devices,a few key challenges that have not been addressed have limited its *** challenges include lithium dendrite growth in the anode side,volume change of the active material,poor electrical conductivity,dissolution and migration of poly sulfides,and slow rate of solid-state reactions in the cathode *** the electrochemical performance of lithium-sulfur batteries is greatly affected by the design of the cathode host material,it has also been widely discussed in addressing the abovementioned *** this paper,three design ideas of cathode host materials in terms of microstructure,crystal structure and electronic structure are introduced and ***,the current progress of these three structural design strategies and their effects on the electrochemical performance of lithium-sulfur batteries are discussed in ***,future directions in the structural design of cathode materials for lithium-sulfur batteries are discussed and further perspectives are provided.

关键词： lithium-sulfur batteries Structure engineering Cathode Host materials

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Significant Histologic Changes Are Not Rare in Treatment-naive Hepatitis B Patients with Normal Alanine Aminotransferase Level:A Meta-analysis

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Journal of Clinical and Translational Hepatology 2021年第5期9卷 615-625页

作者： Chi Zhang jia-wen li Zhao Wu Hong Zhao Gui-Qiang Wang Department of Infectious Disease Center for Liver DiseasePeking University First HospitalXicheng DistrictBeijingChina The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Zhejiang UniversityHangzhouZhejiangChina Peking University International Hospital BeijingChina

Background and Aims:Chronic hepatitis B is the main cause of liver ***,the most neglected group has been treatment-naive chronic hepatitis B patients with normal alanine aminotransferase(ALT).People have tended to subjectively assume that the liver lesions of these patients are not serious and do not need antiviral ***,the truth is not as optimistic as we *** aimed in this study to analyze the proportion of significant inflammation or fibrosis in aforementioned ***:Medline,Embase,and Cochrane library were searched up to January 10th 2020,to identify studies of these patients with liver *** double arcsine method was used with a random-effect model to combine the proportion of significant inflammation or *** heterogeneity was explored by subgroup analysis and *** of interests included the proportion of significant inflammation or fibrosis and *** secondary outcome was to find the risk factors of significant histological ***:Nineteen eligible studies,with 2,771 participants,were *** pooled proportion of significant inflammation or fibrosis was 35%[95%confidence interval(CI):27 to 43]and 30%(95%CI:25 to 36),*** pooled proportion of cirrhosis was 3%[95%CI:1 to 5,(12 studies;1,755 participants)].In subgroup analysis,old age[***(<40 years-old),44%vs.26%,p=0.012]was significantly associated with higher fibrosis stage as well as cirrhosis[***(<40 years-old),4.8%vs.1.8%,p<0.001].Conclusions:About 1/3 of the treatment-naive chronic hepatitis B patients with normal ALT show significant histological changes,and some even have cirrhosis.

关键词： Significant histologic changes Chronic hepatitis B Normal ALT Meta-analysis

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