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Lipomatous ependymoma with ZFTA:RELA fusion-positive:A case report

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World Journal of Clinical Cases 2025年第1期13卷 48-55页

作者： Xiao-Yu Zhao Juan-han Yu Yi-Hua Wang Yi-Xin Liu Lu Xu Lin Fu Ning Yi China Medical University The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Department of Pathology The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Anshan Cancer Hospital Anshan 114000Liaoning ProvinceChina

BACKGROUND Ependymoma with lipomatous differentiation is a rare type of *** ZFTA fusion-positive supratentorial ependymoma is a novel tumor type in the 2021 World Health Organization classification of central nervous system *** fusion-positive lipomatous ependymoma has not been reported to *** SUMMARY We reported a case of a 15-year-old Chinese male who had a sudden convulsion lasting approximately six *** resonance imaging showed a round cystic shadow of approximately 1.9 cm×1.5 cm×1.9 cm under the right parieto-occipital *** examination showed characteristic perivascular pseudorosettes and adipose differentiation in the ***-chemical staining showed that the tumor cells were negative for cytokeratin,NeuN,Syn and p53,but positive for GFAP,vimentin and S-100 ***-ficant punctate intracytoplasmic EMA immunoreactivity was *** level of Ki-67 was about 5%.Genetic analysis revealed ZFTA:RELA fusion.A cranio-tomy with total excision of the tumor was *** follow-up time was 36 months,no evidence of disease recurrence was found in magnetic resonance *** Based on these findings,the patient was diagnosed as a ependymoma with ZFTA fusion and lipomatous *** case report provides information on the microscopic morphological features of ependymoma with ZFTA fusion and lipomatous differentiation,which can help pathologists to make a definitive diagnosis of this tumor.

关键词： Ependymoma Lipomatous Molecular classification Supratentorial ZFTA:RELA fusion Case report

CARBON MATERIALS FOR LITHIUM ION BATTERIES

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Chinese Chemical Letters 1996年第4期7卷 389-390页

作者： Ma, SH Li, J Jing, XB Wang, fs ACAD SINICA CHANGCHUN INST APPL CHEMPOLYMER PHYS LABCHANGCHUN 130022PEOPLES R CHINA

The preliminary work indicated that passive film is the most important factor influencing cell performance of carbon anode, and the carbon and solvent used govern cell performance by forming the passive film of differ... 详细信息

关键词： ION CARBON MATERIALS FOR LITHIUM ION BATTERIES

A data-driven rolling optimization method for trajectory tracking error prediction of CNC machine tools

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Science China Technological Sciences 2025年第1期 274-289页

作者： Yinxin GUAN Jixiang YANG Shizhong TAN han DING School of Mechanical Science and Engineering State Key Laboratory of Intelligent Manufacturing Equipment and TechnologyHuazhong University of Science and Technology

The dynamic performance of the feed-drive system in CNC machine tools directly influences the accuracy of machined parts. To enhance the motion control performance of CNC machine tools, a high-precision model of the feed-drive system is critical. However, current modeling methods for feed-drive systems seldom consider time-varying factors such as loads, wear, and lubrication. As a result, the model accuracy degrades when the system characteristics are affected by these time-varying factors. In this paper, a rolling optimization method with partial weights frozen is developed to realize quick iterative learning of a data-driven model for a feed drive system with time-varying characteristics using a small amount of ***, the long short-term memory fully connected(LSTM-FC) network is built and divided into feature extraction and output fitting parts based on their functions. Then, a weight freezing-based rolling optimization method is applied. The weights in the feature extraction part are frozen, which preserves the learned common knowledge and patterns by solidifying the way that high-dimensional features are extracted from the input. By adjusting the weights in the output fitting part, the extracted highdimensional features are remapped to the new data distribution changed by time-varying factors. Finally, the performance of the developed rolling optimization method is confirmed by experiments. The results show that the proposed rolling optimization method reduces the maximum prediction errors by 49.5% and the total training time by 96.3% compared with existing methods,which demonstrates that the proposed method can restore model accuracy when the system characteristics change due to timevarying factors, and significantly accelerate the optimization process by rolling optimization.

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黄河流域数字经济发展对农民收入的影响

西北农林科技大学学报（社会科学版） 2025年第1期25卷 119-127页

作者：张晋晋韩克勇山西财经大学财政与公共经济学院山西省社会科学院太原030006

基于黄河流域100个地级市2011-2022年数据,实证探讨数字经济发展对农民收入的影响。研究表明,数字经济发展对农村居民收入有显著促进作用,这一结论在改变样本容量和双侧缩尾等稳健性检验后依然成立。区域异质性分析表明,黄河流域数字经... 详细信息

基于黄河流域100个地级市2011-2022年数据,实证探讨数字经济发展对农民收入的影响。研究表明,数字经济发展对农村居民收入有显著促进作用,这一结论在改变样本容量和双侧缩尾等稳健性检验后依然成立。区域异质性分析表明,黄河流域数字经济发展对农村居民收入的提升效应从下游、中游到上游依次递减;维度异质性分析发现,互联网发展的提升效应更大;城镇化水平异质性分析表明,城镇化水平较高的地区提升效应较大;经济发展水平异质性分析亦表明,经济发展水平较高的地区提升效应较大。据此提出强化农村数字经济基础设施建设,实施区域差异化策略,提升农民参与能力等对策建议。

关键词：黄河流域数字经济农村居民收入共同富裕

Effects on the Surface Passive Film of Carbon Anode on Cell Behavior

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Chinese Chemical Letters 1997年第2期8卷 175-176页

作者： Ma, SH Li, J Jing, XB Wang, fs ACAD SINICA CHANGCHUN INST APPL CHEMPOLYMER PHYS LABCHANGCHUN 130022PEOPLES R CHINA

The properties of the films formed in the electrolyte of PC/DME LiClO4 on two kinds of carbon materials were examined by cathodic polarization measurements. The result suggested that the films on both carbon electrode... 详细信息

关键词： DME Effects on the Surface Passive Film of Carbon Anode on Cell Behavior Cell

超声参数与颈动脉粥样硬化斑块形成脂代谢、易损性的关系分析

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罕少疾病杂志 2025年第1期32卷 44-46页

作者：韩媛天津市公安医院物检科天津300170

目的探讨超声参数与颈动脉粥样硬化斑块形成患者脂代谢、易损性的关系。方法选取2022年1月至2023年6月本院收治的112例颈动脉粥样硬化患者为观察组,另选取同期健康体检者112例为对照组,均行超声检查及血脂[甘油三酯(TRIG)、总胆固醇(... 详细信息

目的探讨超声参数与颈动脉粥样硬化斑块形成患者脂代谢、易损性的关系。方法选取2022年1月至2023年6月本院收治的112例颈动脉粥样硬化患者为观察组,另选取同期健康体检者112例为对照组,均行超声检查及血脂[甘油三酯(TRIG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、高密度脂蛋白胆固醇/总胆固醇比值(HDL-C/TC)、低密度脂蛋白胆固醇/总胆固醇比值(LDL-C/TC)]检测。另根据斑块性质将患者分为易损组与稳定组,比较此两组超声参数与血脂指标。采用Pearson相关系数分析超声参数与颈动脉粥样硬化斑块形成患者血脂指标、易损性的关系。结果观察组颈动脉内-中膜厚度(IMT)、平均血流速度(MFV)、阻力指数(RI)、搏动指数(PI)及TRIG、TC、LDL-C水平均高于对照组(P0.05);易损组IMT及TRIG、TC、LDL-C水平均高于稳定组(P<0.05),HDL-C/TC低于稳定组(P<0.05);IMT与斑块易损性呈正相关(P<0.05);IMT、MFV、PI、RI与TRIG、TC、LDL-C均呈正相关(P<0.05),与HDL-C、HDL-C/TC均呈负相关(P<0.05);VD与TRIG、TC、LDL-C均呈负相关(P<0.05),与HDL-C、HDL-C/TC均呈正相关(P<0.05)。结论 IMT与颈动脉粥样硬化斑块形成患者脂代谢、斑块易损性具有相关性,且MFV、PI、RI、VD亦与脂代谢存在一定的关系。

关键词：超声颈动脉粥样硬化斑块性质脂代谢

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基于纳秒LIBS的氢气/空气火焰混合分数测量研究

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光谱学与光谱分析 2025年第1期45卷 24-29页

作者：刘子晗刘艳韩磊单沅鲁政高强李帅瑶李博天津大学内燃机燃烧学国家重点实验室天津300072 中国科学院工程热物理研究所北京100190

在双碳政策和化石能源短缺的背景下,氢能作为高效环保的清洁能源,受到广大研究人员的关注。氢气/空气混合燃烧作为推动氢能规模化应用的重要途径,其燃烧机理和关键参数的测量技术成为目前研究的热点。燃空当量比是表征燃烧过程中燃料与... 详细信息

在双碳政策和化石能源短缺的背景下,氢能作为高效环保的清洁能源,受到广大研究人员的关注。氢气/空气混合燃烧作为推动氢能规模化应用的重要途径,其燃烧机理和关键参数的测量技术成为目前研究的热点。燃空当量比是表征燃烧过程中燃料与氧化剂混合程度的重要参数,直接影响燃烧的开始、自持以及燃烧化学反应的活跃程度。因此,对燃烧过程中的局部当量比实时在线监测,对于改善燃烧效率、控制燃烧过程具有重要意义。目前,可以实时测量氢气/空气火焰当量比的方法相对较少,激光光谱技术作为一种非侵入式的测量方法,不仅具有实时在线测量的能力,还具有快速、原位、远程分析、多元素同时在线监测等特点,在燃烧测量领域具有重要的应用潜力。采用纳秒激光诱导击穿光谱技术对氢气和空气燃烧场的燃空当量比进行测量研究。氢气和空气在管内混合后,由射流口喷出形成射流燃烧火焰场。激光通过透镜聚焦到射流燃烧场中击穿并产生等离子体,其等离子体的发射光谱由光谱仪采集,实验发现光谱中H 656 nm和O 777 nm具有很强的发射强度,且光谱强度随着当量比的变化,呈现规律性变化趋势。因此,采用H 656 nm和O 777 nm的光谱分别标示氢气和空气,并将其比值作为燃空当量比的测量参量。实验在氢气空气混合均匀的低速流场中测量了不同当量比下H 656 nm与O 777 nm的光谱强度比值,并与当量比建立标定曲线,实验发现该标定曲线对燃烧场和非燃烧场同样适用。基于标定曲线,我们研究了存在外界掺混情况下,射流燃烧场的局部燃空当量比情况。在当量比1.0,流场速度为20 m·s^(-1)的射流燃烧场中,测量了射流中心位置不同高度的燃空当量比变化情况,并在相同工况下进行了数值模拟。模拟结果与实验测量吻合较好,验证了纳秒激光诱导击穿光谱技术测量氢气/空气混合气的燃空当量比的可行性。该方法可为氢气燃烧基础研究及数值模拟提供技术支持。

关键词：激光诱导击穿光谱氢能当量比模拟

瞬变电磁技术对地质构造富(导)水性的探测研究

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煤 2025年第1期34卷 96-99页

作者：韩霞潞安化工集团能源事业部地测部山西长治046204

利用瞬变电磁勘探方法,通过视电阻率反演技术,分析目标体和目的层位的电性变化特征,寻找视电阻率低阻区以及其变化情况。分析目标体在层面和层间的富水性特征,即预测预报其富(导)水性,从而以此为基础制定合理科学的防治水技术方案,确保... 详细信息

利用瞬变电磁勘探方法,通过视电阻率反演技术,分析目标体和目的层位的电性变化特征,寻找视电阻率低阻区以及其变化情况。分析目标体在层面和层间的富水性特征,即预测预报其富(导)水性,从而以此为基础制定合理科学的防治水技术方案,确保煤矿防治水安全。

关键词：瞬变电磁技术视电阻率反演地质构造目标体富(导)水性

A cellulose-based lithium-ion battery separator with regulated ionic transport and high thermal stability for extreme environments

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Nano Research 2025年第1期18卷 315-322页

作者： Kun-Peng Yang Song Xie Zi-Meng han Hao-Cheng Liu Chong-han Yin Wen-Bin Sun Zhang-Chi Ling Huai-Bin Yang De-han Li Qing-Fang Guan Shu-Hong Yu Department of Chemistry New Cornerstone Science LaboratoryInstitute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsDivision of Nanomaterials&ChemistryHefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China Institute of Innovative Materials Department of Materials Science and EngineeringDepartment of ChemistrySouthern University of Science and TechnologyShenzhen 518055China

Separators play a critical role in lithium-ion ***,the restrictions of thermal stability and inferior electrical performance in commercial polyolefin separators significantly limit their applications under harsh ***,we report a cellulose-assisted self-assembly strategy to construct a cellulose-based separator massively and *** an ultrahigh ionic conductivity in electrolytes of 3.7 mS·cm^(-1) and the ability to regulate ion transport,the obtained separator is a promising alternative for high-performance lithium-ion *** addition,integrated with high thermal stability,the cellulose-based separator endows batteries with high safety at high temperatures,greatly expanding the application scenarios of energy storage devices in extreme environments.

关键词： lithium-ion batteries bio-inspired materials battery separators cellulose nanofiber ultrahigh ionic conductivity high safety