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Quasi-waveform seismic tomography of crustal structures in the capital circle region of China

Science China Earth Sciences 2021年第1期64卷 110-126页

作者： Xueyuan HUANG Dinghui YANG Ping TONG Yuan GAO yutao SHI Hao wu Department of Applied Statistics School of Mathematics and StatisticsBeijing Technology and Business UniversityBeijing 100048China Department of Mathematical Sciences Tsinghua UniversityBeijing 100084China Division of Mathematical Sciences School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore Asian School of the Environment Nanyang Technological UniversitySingapore 637371Singapore Institute of Earthquake Science China Earthquake AdministrationBeijing 100036China

Seismic tomography is one of the main tools to explore the interior of the *** this study,the quasi-waveform seismic tomographic method is used for the first time to reveal the crustal structures in the capital region of China.3-D highresolution V_P,V_S and the Poisson’s ratio models are generated by inverting 29839 direct P-and 29972 direct S-wave traveltimes selected from 3231 local *** results reveal strong crustal *** velocity anomalies at shallow depths are well consistent with surface geologic *** relatively low-velocity anomaly layer in the middle crust may be the result of multiple phases of tectonic *** generally occurred on the boundaries of high-and low-velocity and Poisson’s ratio *** are obvious low-velocity anomalies below the hypocenters of the Tangshan earthquake and the historical Sanhe-Pinggu earthquake,implying the existence of *** similar velocity structures around the hypocenters of the two earthquakes indicate that the occurrences of the two earthquakes may be related to the same *** highresolution velocity models provide important observational constraints on the small-scale heterogeneities and dynamic mechanism of the crust in the capital region of China.

关键词： Quasi-waveform inversion Capital circle region Seismic tomography Crustal velocity structure Heterogeneity

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Enteromorpha prolifera polysaccharide-Fe(Ⅲ) complex promotes intestinal development as a new iron supplement

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Science China Life Sciences 2025年第1期 219-231页

作者： Yingying Feng Yuying wu Jialu Wang Zhenglin Dong Qian Yu Shuangshuang Xia Chunxue Liu Haihua Wang Xin wu Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences CAS Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of Sciences ANYOU Biotechnology Group Co.Ltd Qingdao Seawin Biotech Group Co. LTD

Iron is a crucial micronutrient, and its deficiency can have detrimental effects on the health of infants. Dietary polysaccharide-iron(Ⅲ) complexes(PICs) are promising for addressing iron deficiency due to their minimal adverse reactions and high iron absorption rate. This study aimed to investigate the effects of dietary Enteromorpha prolifera polysaccharide-Fe(Ⅲ) complex(EP-Fe) on newborns, using 3-day weaned piglets as the iron-deficiency model. Results showed that EP-Fe improved iron levels and promoted intestinal development in piglets. Transcriptome sequencing revealed that EP-Fe increased the survival of intestinal epithelial cells under hypoxia by upregulating the expression of genes that promote the development of the vascular system. Additionally, EP-Fe enhanced the mucosal barrier functions by inhibiting myosin light chain kinase(MLCK)/phosphorylated myosin light chain(p-MLC) signaling pathway to increase the expression of intestinal tight junction proteins. Furthermore, the 16S r RNA gene sequencing of gut microbiota showed that EP-Fe promoted the enrichment of Bacteroides＿fragilis and other gut microbes that can metabolize carbohydrates. In conclusion, EP-Fe is an effective iron supplement for newborns, and it can be developed as a comprehensive nutritional supplement.

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Vertical gradients of neutral winds observed by ICON and estimated by the Horizontal Wind Model during the geomagnetic storm on August 26−28,2021

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Earth and Planetary Physics 2025年第1期9卷 69-80页

作者： JiaWei wu Chao Xiong YuYang Huang YunLiang Zhou Department of Space Physics School of Electronic InformationHubei Luojia LaboratoryWuhan UniversityWuhan 430072China

The Michelson Interferometer for Global High-resolution Thermospheric Imaging(MIGHTI)onboard the Ionospheric Connection Explorer(ICON)satellite offers the opportunity to investigate the altitude profile of thermospheric *** this study,we used the red-line measurements of MIGHTI to compare with the results estimated by Horizontal Wind Model 14(HWM14).The data selected included both the geomagnetic quiet period(December 2019 to August 2022)and the geomagnetic storm on August 26-28,*** the geomagnetic quiet period,the estimations of neutral winds from HWM14 showed relatively good agreement with the observations from *** to the ICON observations,near the equator,zonal winds reverse from westward to eastward at around 06:00 local time(LT)at higher altitudes,and the stronger westward winds appear at later LTs at lower *** around 16:00 LT,eastward winds at 300 km reverse to westward,and vertical gradients of zonal winds similar to those at sunrise hours can be *** the middle latitudes,zonal winds reverse about 2-4 h *** winds vary more significantly than zonal winds with seasonal and latitudinal *** to the ICON observations,in the northern low latitudes,vertical reversals of meridional winds are found at 08:00-13:00 LT from 300 to 160 km and at around 18:00 LT from 300 to 200 km during the June *** reversals of meridional winds are found at 04:00-07:00 LT from 300 to 160 km and at 22:00-02:00 LT from 270 to 200 km during the December *** the southern low latitudes,meridional wind reversals occur at 08:00-11:00 LT from 200 to 160 km and at 21:00-02:00 LT from 300 to 200 km during the June *** the December solstice,reversals of the meridional wind appear at 20:00-01:00 LT below 200 km and at 06:00-11:00 LT from 300 to 160 *** the northern middle latitudes,the northward winds are dominant at 08:00-14:00 LT at 230 km during the June *** winds persist until

关键词： horizontal neutral winds vertical gradients Ionospheric Connection Explorer satellite Horizontal Wind Model 14 geomagnetic storm

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A quantum-search-based multi-classifier for image recognition

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 21-31页

作者： Lu Liu Xingyu wu Lufan Zhang Chuan Wang School of Artificial Intelligence Beijing Normal University Applied Optics Beijing Area Major Laboratory Beijing Normal University

The multi-class classification of images is a pivotal challenge within the realm of image processing. As the volume of visual data continues to expand, there is a burgeoning interest in harnessing the unique capabilities of quantum computation to augment the efficiency of classification tasks. However, many existing methods for training quantum image multi-classifiers parallel classical machine learning techniques, where the requisite circuit measurements increase linearly with the volume of training data. This work introduces a novel approach for training a quantum image multi-classifier based on the quantum search algorithm. We have meticulously conducted rigorous experiments on a handwritten digit dataset, a classic benchmark in the field. The results have been meticulously compared with previous works, and the comparative analysis not only validates the efficiency of our proposed approach, requiring only O(N/b) measurements during training, but also highlights a significant quadratic speedup of the algorithm.

关键词： quantum computation image recognition quantum search algorithm

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问题导向的医学类专业毕业实习质量提升策略研究

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中国民族民间医药 2019年第24期28卷 112-115页

作者：夏咸松陈宗翰吴玉涛邓虹王礴云南中医药大学云南昆明650500 云南中医药大学第一附属医院云南昆明650021 云南中医药大学第三附属医院云南昆明650051

本文从多个方面梳理了我校中医类专业学生在毕业实习中存在的一系列问题,结合近几年我校中医类执业医师考试结果及分阶段考试第一阶段实证研究的成绩,在建构主义理论指导下,提出了针对性的改革措施,以解决中医类专业毕业生“基础不扎实... 详细信息

本文从多个方面梳理了我校中医类专业学生在毕业实习中存在的一系列问题,结合近几年我校中医类执业医师考试结果及分阶段考试第一阶段实证研究的成绩,在建构主义理论指导下,提出了针对性的改革措施,以解决中医类专业毕业生“基础不扎实,中医思维弱化,临床能力下降”的问题,强化了理论与经典的基础性、思维训练的重要性、自主学习能力提升的必要性。

关键词：毕业实习临床思维实践能力

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Crust-mantle coupling in North China:Preliminary analysis from seismic anisotropy

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Chinese Science Bulletin 2010年第31期55卷 3599-3605页

作者： GAO Yuan wu Jing YI GuiXi SHI yutao Institute of Earthquake Science China Earthquake Administration Beijing 100036 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Earthquake Administration of Sichuan Province Chengdu 610041 China

Data from the CASN(Capital Area Seismograph Network),NSNC(National Seismograph Network of China),and IRIS(Incorporated Research Institutions for Seismology) are compared with data from a temporary North China Seismic Array to obtain the background orientation of the horizontal crustal principal compressive stress at NE 95.1°±15.4° in North *** are corrected for disturbances of faults and irregular tectonics,and are used to constrain the fast SKS polarization at NE 110.2°±15.8° in North *** station analyses suggests that there is consistently more than 10° difference between the polarizations of fast shear-wave in the crust and those of fast SKS *** anisotropic phase velocities of Rayleigh waves at different periods also indicate an orientation change for fast velocity with *** suggests the crust-mantle coupling in North China follows neither the simple decoupling model nor the strong coupling ***,it is possibly some inhomogeneous combination of two models or some gradual-change model of physical *** study shows that anisotropy in the crust and mantle could be multiply characterized more correctly and crust-mantle coupling could be analyzed further,if increasing near-field shear-wave splitting data that indicate crustal anisotropy,combined with the azimuthal anisotropy of Rayleigh waves,besides the result of SKS splitting travelling through lithosphere and surface GPS measurements.

关键词：地震各向异性耦合模型中国壳幔 Rayleigh波方位各向异性剪切波分裂地震台网

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草酸改性生物炭对重金属铬污染土壤的修复研究

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广州化工 2024年第19期52卷 136-138页

作者：罗莹莹华碧成吴钦鸿林嘉杏麦思晓吴雨桃韩山师范学院化学与环境工程学院广东潮州521041

由农业废弃物花生壳在500℃下煅烧炭化制成生物炭产品,再利用草酸改性生物炭,进行模拟Cr污染土壤的修复实验研究。对生物炭进行扫描电镜(SEM)、傅里叶红外光谱(FTIR)表征,探究草酸改性生物炭对Cr的吸附机理。结果表明草酸改性生物炭的... 详细信息

由农业废弃物花生壳在500℃下煅烧炭化制成生物炭产品,再利用草酸改性生物炭,进行模拟Cr污染土壤的修复实验研究。对生物炭进行扫描电镜(SEM)、傅里叶红外光谱(FTIR)表征,探究草酸改性生物炭对Cr的吸附机理。结果表明草酸改性生物炭的层级间隙明显、生物炭表面孔隙丰富且生物炭含氧官能团提高,成功负载-COOH官能团。改性生物炭投加量的增加和土壤中铬浓度的降低均有利于土壤中水溶态铬的去除,毒性淋滤实验表明反应后土壤中的铬迁移性明显降低。研究结果可为生物炭材料应用于铬污染土壤的修复提供理论依据。

关键词：生物炭改性重金属吸附修复土壤

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Generation dispatch method based on maximum entropy principle for power systems with high penetration of wind power

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Journal of Modern Power Systems and Clean Energy 2018年第6期6卷 1213-1222页

作者： Qiaoyan BIAN yutao QIU Wenlian wu Huanhai XIN Xuhua FU Hangzhou Power Supply Company of State Grid Zhejiang Electric Power Company State Grid Zhejiang Electric Power Company College of Electrical Engineering Zhejiang University Zhejiang Power Economic Research Institute of State Grid

This paper proposes a generation dispatch model based on the maximum entropy principle. The objective is to find an optimal generation dispatch strategy that minimizes the generation cost and satisfies the security constraints of power systems, while taking into account the uncertainty of wind power. Since in many situations, only partial information of the probabilistic variables can be obtained, the maximum entropy principle is introduced to find the most likely realized probability distributions of the power flow, thus providing an accurate probabilistic circumstance to solve the generation dispatch model. The proposed method is tested on the IEEE 39-bus system, and is compared with the methodologies based on Monte Carlo simulation and Gram-Charlier expansions.

关键词： Generation dispatch Strategy Maximum entropy Probability distribution Cumulant

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Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang Feng Gao Yu-Gui Peng Peng wu Zong-Lin Li Xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

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Repetitive transcranial magnetic stimulation in Alzheimer’s disease:effects on neural and synaptic rehabilitation

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Neural Regeneration Research 2025年第2期20卷 326-342页

作者： Yi Ji Chaoyi Yang Xuerui Pang Yibing Yan Yue wu Zhi Geng Wenjie Hu Panpan Hu Xingqi wu Kai Wang Department of Neurology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhui ProvinceChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina Department of Psychology and Sleep Medicine The Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina

Alzheimer’s disease is a neurodegenerative disease resulting from deficits in synaptic transmission and *** Alzheimer’s disease brain tends to be hyperexcitable and hypersynchronized,thereby causing neurodegeneration and ultimately disrupting the operational abilities in daily life,leaving patients *** transcranial magnetic stimulation is a cost-effective,neuro-modulatory technique used for multiple neurological *** the past two decades,it has been widely used to predict cognitive decline;identify pathophysiological markers;promote neuroplasticity;and assess brain excitability,plasticity,and *** has also been applied to patients with dementia,because it can yield facilitatory effects on cognition and promote brain recovery after a neurological ***,its therapeutic effectiveness at the molecular and synaptic levels has not been elucidated because of a limited number of *** study aimed to characterize the neurobiological changes following repetitive transcranial magnetic stimulation treatment,evaluate its effects on synaptic plasticity,and identify the associated *** review essentially focuses on changes in the pathology,amyloidogenesis,and clearance pathways,given that amyloid deposition is a major hypothesis in the pathogenesis of Alzheimer’s *** mechanisms associated with repetitive transcranial magnetic stimulation procedures and different pathways mediating gene transcription,which are closely related to the neural regeneration process,are also ***,we discuss the outcomes of animal studies in which neuroplasticity is modulated and assessed at the structural and functional levels by using repetitive transcranial magnetic stimulation,with the aim to highlight future directions for better clinical translations.

关键词： Alzheimer’s disease amyloid deposition apoptotic mechanisms biomarker neural regeneration neurodegeneration repetitive transcranial magnetic stimulation synaptic plasticity

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