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Earthquake Engineering and Engineering Vibration 2025年第1期24卷 235-256页

作者： He Jiajun Lu Jun Guo Wei Dong Lianjie bai xue Li Yongle Southwest Municipal Design&Research Institute of China Chengdu 610299China Southwest Jiaotong University Chengdu 610031China

Aerodynamic and dynamic interference from trains is a key issue of concern for the safety of road vehicles travelling on single-level rail-cum road *** on the wind-road vehicle-train-bridge(WRTB)coupled vibration system developed herein,this study examines the dynamic characteristics when road vehicles meet trains in this *** influence of load combination,vehicle type and vehicle location is analyzed.A method to obtain the aerodynamic load of road vehicles encountering the train at an arbitrary wind speed is *** results show that due to the windproof facilities and the large line distance between the railway and highway,the aerodynamic and dynamic influence of trains on road vehicles is slight,and the vibration of road vehicles depends on the road *** the road vehicles discussed,the bus is the easiest to rollover,and the truck-trailer is the easiest to *** with the aerodynamic impact of trains,the crosswind has a more significant influence on road *** first peak/valley value of aerodynamic loads determines the maximum dynamic response,and the quick method is optimized based on this *** cases show that the optimized method can produce conservative results and can be used for relevant research or engineering applications.

关键词： single-level rail-cum-road bridge vehicle-bridge coupled vibration dynamic characteristic aerodynamic impact road vehicle

白雪教授基于玄府理论以资生丸治疗老年衰弱综合征经验

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中国中医药现代远程教育 2025年第3期23卷 69-71页

作者：胥青梅白雪西南医科大学附属中医医院老年病科四川泸州646000 西南医科大学附属中医医院神经内科四川泸州646000

文章介绍白雪教授基于“玄府”理论,巧用资生丸化裁加减治疗老年衰弱综合征的经验。白教授指出,老年患者素体虚弱,或因饮食不节,或因情志内伤,或因外感寒邪,引起玄府开阖失司或闭郁不通,可导致气血津液运行不利、气机升降出入障碍,百病... 详细信息

文章介绍白雪教授基于“玄府”理论,巧用资生丸化裁加减治疗老年衰弱综合征的经验。白教授指出,老年患者素体虚弱,或因饮食不节,或因情志内伤,或因外感寒邪,引起玄府开阖失司或闭郁不通,可导致气血津液运行不利、气机升降出入障碍,百病由此而生。久病气虚,气虚不能助心行水,使水饮停聚三焦,致脾肾气虚。玄府郁闭、神机不遂、脾肾气虚是老年衰弱综合征的基本病机,开通玄府、调畅气机、健脾益肾则是其治疗基本原则。

关键词：虚劳老年衰弱综合征玄府理论资生丸脾肾气虚名医经验

Capsaicin(CAP) exerts a protective effect against ethanol-induced oxidative gastric mucosal injury by modulating the chemokine receptor 4 (CCR4)/Src/p47phox signaling pathway both in vitro and in vivo

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Chinese Journal of Natural Medicines 2025年第02期23卷 191-202页

作者： Zhiru Yang Haolin Guo Pengfei Zhang Kairui Liu Junli Ba xue bai Shiti Shama Bo Zhang Xiaoning Gao Jun Kang School of Life Sciences Tianjin University School of Traditional Chinese Medicine Beijing University of Chinese Medicine Tianjin Pharmaceutical and Cosmetic Evaluation and Inspection Center Institute for TCM-X MOE Key Laboratory of Bioinformatics Bioinformatics Division BNRist Department of Automation Tsinghua University Institute of Biomedical Research Henan Academy of Sciences

Ethanol(EtOH) is a common trigger for gastric mucosal diseases, and mitigating oxidative stress is essential for attenuating gastric mucosal damage. Capsaicin(CAP) has been identified as a potential agent to counteract oxidative damage in the gastric mucosa; however, its precise mechanism remains unclear. This study demonstrates that CAP alleviates EtOH-induced gastric mucosal injuries through two primary pathways: by suppressing the chemokine receptor 4(CCR4)/Src/p47phox axis, thereby reducing oxidative stress, and by inhibiting the phosphorylation and nuclear translocation of nuclear factor-κB p65(NF-κB) p65, resulting in diminished inflammatory responses. These findings elucidate the mechanistic pathways of CAP and provide a theoretical foundation for its potential therapeutic application in the treatment of gastric mucosal injuries.

关键词： Capsaicin Chemokine signaling Gastric mucosal damage NF-κB p65

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煤矿顶管掘进参数实测分析与控制方法研究

煤矿机械 2025年第2期46卷 65-68页

作者：白雪中煤科工集团沈阳研究院有限公司辽宁抚顺113122 煤矿安全技术国家重点实验室辽宁抚顺113122 中煤科工(辽宁)机电安全装备研究院有限公司辽宁本溪117000

为指导煤岩层地质条件下顶管掘进机施工操作,进行了顶管施工过程主顶油压、纠偏油压、截割电流等参数实测,得到了主顶顶力、纠偏顶力、刀盘扭矩随顶进距离变化规律,提出了以刀盘扭矩为控制指标的顶管掘进施工方法,并对顶进过程遭遇障碍... 详细信息

为指导煤岩层地质条件下顶管掘进机施工操作,进行了顶管施工过程主顶油压、纠偏油压、截割电流等参数实测,得到了主顶顶力、纠偏顶力、刀盘扭矩随顶进距离变化规律,提出了以刀盘扭矩为控制指标的顶管掘进施工方法,并对顶进过程遭遇障碍物、方向偏离、泥浆减阻突变等情况进行了扭矩控制与实际操作分析。研究结果表明:主顶顶力随顶推距离的增加呈上升趋势,纠偏顶力则波动较大,刀盘扭矩随顶推距离的增加变化趋势不明显,故刀盘扭矩能够稳定且敏感反应出掘进工作面状况。在掘进施工过程中可通过对刀盘扭矩和顶推速度的控制,有效维持顶管掘进施工平衡状态。

关键词：煤矿顶管掘进刀盘扭矩主顶顶力纠偏顶力扭矩控制

Chimeric antigen receptor T cells targeting CD312 as a therapy for acute myeloid leukemia

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中华医学杂志(英文版) 2025年第1期138卷 114-116页

作者： Xie Danni Wang Bing bai xue Jin Xin Lu Wenyi Zhang Meng Zhang Yi Cao Xinping Zhao Mingfeng First Central Clinical College Tianjin Medical University Tianjin China Department of Hematology Tianjin First Central Hospital Tianjin China Liangzhu Laboratory Zhejiang University Medical Center Hangzhou Zhejiang China

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逆康普顿散射X射线在放射治疗中的应用前景

中华放射肿瘤学杂志 2025年第1期34卷 97-102页

作者：王萧桐应延辰王彬冰白雪浙江省肿瘤医院放射物理科中国科学院杭州医学研究所杭州310022

逆康普顿散射X射线常由相对论级高能电子与激光脉冲的低能光子碰撞产生。与临床常用的由轫致辐射产生的X射线相比,逆康普顿X射线因物理性质不同,在放射诊断和放射治疗中具备独特优势。目前,放射治疗日益强调精确化,逆康普顿X射线为精准... 详细信息

逆康普顿散射X射线常由相对论级高能电子与激光脉冲的低能光子碰撞产生。与临床常用的由轫致辐射产生的X射线相比,逆康普顿X射线因物理性质不同,在放射诊断和放射治疗中具备独特优势。目前,放射治疗日益强调精确化,逆康普顿X射线为精准放疗提供了一条可能路径。然而,国际上可产生逆康普顿X射线的设施有限,在放疗领域的有关研究亦处于探索阶段。本文结合国内外近年的相关研究,介绍逆康普顿X射线的发生方式及其在放射物理上的特点与优势,为评估其在放射治疗中的应用价值与前景提供参考。

关键词：放射疗法逆康普顿散射 X线加速器 FLASH放疗

阴道分娩产妇分娩期全流程护理方案的构建及应用研究

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中华护理杂志 2025年第1期60卷 10-17页

作者：白雪张广意马嫔张燕吉双对米光丽内蒙古医科大学附属医院重症医学科二部呼和浩特市010030 北京大学第一医院宁夏妇女儿童医院产科宁夏回族自治区医院骨科宁夏医科大学总医院妇科宁夏医科大学总医院护理部

目的构建阴道分娩产妇分娩期全流程护理方案并评价其应用效果。方法在文献分析的基础上结合德尔菲专家函询法,构建阴道分娩产妇分娩期全流程护理方案。2023年6月—9月,采用便利抽样法,选取在宁夏回族自治区某三级甲等专科医院拟行阴道... 详细信息

目的构建阴道分娩产妇分娩期全流程护理方案并评价其应用效果。方法在文献分析的基础上结合德尔菲专家函询法,构建阴道分娩产妇分娩期全流程护理方案。2023年6月—9月,采用便利抽样法,选取在宁夏回族自治区某三级甲等专科医院拟行阴道分娩的180名产妇作为研究对象,其中,8月—9月的产妇为试验组,6月—7月的产妇为对照组。试验组在常规护理的基础上接受分娩期全流程护理方案,对照组进行常规护理,比较两组分娩结局相关指标(分娩方式、各产程时间等)、分娩疼痛程度、分娩恐惧及分娩体验。结果2轮专家函询的有效问卷回收率分别为100%、93.75%,专家权威系数均为0.85。构建的方案包括3个一级条目、10个二级条目及29个三级条目。最终,试验组与对照组分别纳入86名、85名产妇。干预后,两组各产程时间比较,差异均具有统计学意义(P<0.05);疼痛控制优良率比较,差异具有统计学意义(χ^(2)=16.386,P<0.001);试验组分娩恐惧量表得分为(27.76±3.60)分,低于对照组的(33.06±3.36)分,分娩体验问卷得分为(80.83±4.83)分,高于对照组的(75.79±3.46)分,差异均具有统计学意义(P<0.001)。结论阴道分娩产妇分娩期全流程护理方案具有较好的科学性、可行性,应用该方案可缩短产妇各产程时间,减轻分娩疼痛、分娩恐惧,改善分娩体验。

关键词：阴道分娩全流程分娩恐惧分娩体验产科护理

Evolution of pore systems in low-maturity oil shales during thermal upgrading--Quantified by dynamic SEM and machine learning

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Petroleum Science 2024年第3期21卷 1739-1750页

作者： Jun Liu xue bai Derek Elsworth Key Laboratory of Deep Underground Science and Engineering(Ministry of Education) Institute of New Energy and Low-Carbon TechnologySichuan UniversityChengdu610065SichuanChina International Quantum Academy Shenzhen518048GuangdongChina Shenzhen Institute of Advanced Electronic Materials Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055GuangdongChina Department of Energy and Mineral Engineering Pennsylvania State University ParkPA 16802USA

In-situ upgrading by heating is feasible for low-maturity shale oil,where the pore space dynamically *** characterize this response for a heated substrate concurrently imaged by *** systematically follow the evolution of pore quantity,size(length,width and cross-sectional area),orientation,shape(aspect ratio,roundness and solidity)and their anisotropy—interpreted by machine *** indicate that heating generates new pores in both organic matter and inorganic ***,the newly formed pores are smaller than the original pores and thus reduce average lengths and widths of the bedding-parallel pore ***,the average pore lengths and widths are increased in the bedding-perpendicular ***,heating increases the cross-sectional area of pores in low-maturity oil shales,where this growth tendency fluctuates at300℃.In addition,the orientation and shape of the newly-formed heating-induced pores follow the habit of the original pores and follow the initial probability distributions of pore orientation and ***,limited anisotropy is detected in pore direction and shape,indicating similar modes of evolution both bedding-parallel and *** propose a straightforward but robust model to describe evolution of pore system in low-maturity oil shales during heating.

关键词： Low-maturity oil shale Pore elongation Organic matter pyrolysis In-situthermal upgrading Scanning electron microscopy(SEM) Machine learning

Recent progress and prospect of carbon-free single-site catalysts for the hydrogen and oxygen evolution reactions

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Nano Research 2022年第2期15卷 818-837页

作者： Jingqi Guan xue bai Tianmi Tang Institute of Physical Chemistry College of ChemistryJilin University2519 Jiefang RoadChangchun 130021China

The key challenge for scalable production of hydrogen from water lies in the rational design and preparation of high-performance and earth-abundant electrocatalysts to replace precious metal Pt and IrO_(2) for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).Although atomic M-N-C materials have been extensively studied in heterogeneous catalysis field,the insufficient antioxidant capacity of carbonous substrates hinders their practical application in *** highly active and stable OER electrocatalysts is the key for electrochemical water *** review presents feasible design strategies for fabricating carbon-free single-site catalysts and their applications in HER/OER and overall water *** constitutive relationships between structure,composition,and catalytic performance for HER and OER are detailly discussed,providing ponderable insights into rationally constructing high-performance HER and OER *** perspectives on the challenges and future research orientations in single-site catalysts for electrochemical water splitting are suggested.

关键词： single-atom catalyst single-site catalyst hydrogen evolution reaction oxygen evolution reaction water splitting

基于自适应反正切非奇异终端滑模的水下机械臂轨迹跟踪控制

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控制与决策 2025年第1期40卷 205-213页

作者：范亚洲孙林祥白雪剑赵艺楠惠晓龙王宇广东电网有限责任公司电力科学研究院广州510620 哈尔滨理工大学自动化学院哈尔滨150006 辽宁工业大学电气工程学院辽宁锦州121001 中国科学院自动化研究所北京100190

针对水下机械臂的末端轨迹跟踪控制问题,提出一种自适应快速反正切非奇异终端滑模控制器.首先,基于莫里森方程建立考虑水作用效应的水下机械臂动力学模型;其次,结合非奇异终端滑模控制和反正切函数特性,设计一种快速反正切非奇异终端滑... 详细信息

针对水下机械臂的末端轨迹跟踪控制问题,提出一种自适应快速反正切非奇异终端滑模控制器.首先,基于莫里森方程建立考虑水作用效应的水下机械臂动力学模型;其次,结合非奇异终端滑模控制和反正切函数特性,设计一种快速反正切非奇异终端滑模控制器,并基于径向基神经网络预测系统的未知扰动;然后,通过李雅普诺夫理论验证所提控制方法可在有限时间内收敛到期望位置;最后,通过仿真实验验证所提控制方法的有效性.

关键词：水下机器人水下机械臂滑模控制自适应控制轨迹跟踪