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适用于电动汽车锂离子电池的预-主均衡控制策略
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作者 牛文学 贺丹 +3 位作者 范武 赵永来 刘志强 王斌 《实验室研究与探索》 北大核心 2025年第4期13-16,共4页
为了达到仅依靠电池电压就能实现电池均衡的目的,提出了预-主均衡控制策略。设计并制作了电池均衡测试平台,完成了电池均衡控制策略实验研究。结果表明,当电池组处于静态时,预均衡控制策略将电池间电压差值从50mV缩小至25mV,而主均衡控... 为了达到仅依靠电池电压就能实现电池均衡的目的,提出了预-主均衡控制策略。设计并制作了电池均衡测试平台,完成了电池均衡控制策略实验研究。结果表明,当电池组处于静态时,预均衡控制策略将电池间电压差值从50mV缩小至25mV,而主均衡控制策略则将电池间电压差值进一步缩小至3mV;当电池组处于动态时,预均衡控制策略将电池间电压差值从30mV缩小至20mV,而主均衡控制策略则将电池间电压差值进一步缩小至6mV。 展开更多
关键词 锂离子电池 均衡控制策略 电压差 预均衡 主均衡
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组学技术在食品风味解析中的应用研究进展 被引量:1
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作者 付英杰 张启东 +7 位作者 范武 马姗姗 王妍 史清照 柴国璧 王丁众 席辉 卢斌斌 《河南工业大学学报(自然科学版)》 北大核心 2025年第3期135-147,共13页
随着组学技术的快速发展,感官组学、代谢组学、蛋白质组学、肽组学、脂质组学在食品风味分析中的应用得到了广泛关注,综述了这些组学技术在食品风味解析中的最新进展。感官组学通过人类感官评价与仪器检测相结合,揭示了食品风味的感官... 随着组学技术的快速发展,感官组学、代谢组学、蛋白质组学、肽组学、脂质组学在食品风味分析中的应用得到了广泛关注,综述了这些组学技术在食品风味解析中的最新进展。感官组学通过人类感官评价与仪器检测相结合,揭示了食品风味的感官属性和质量;代谢组学提供了对食品中代谢物的全谱分析,帮助解析风味物质的代谢路径及变化规律;蛋白质组学与肽组学协同工作,识别与风味相关的蛋白质和肽段,揭示其在风味形成过程中的作用;脂质组学主要关注脂类物质对食品风味的影响,尤其是在脂肪酸、醇类等成分上的贡献。尽管这些组学技术在风味分析中取得了显著进展,但仍面临数据复杂性高、技术集成难度大、风味物质与感官评价之间的关系尚不完全明确等挑战。通过多组学技术的综合应用,食品风味的解析将更加全面、精准,为食品风味的优化和质量控制提供了新的思路和方法。 展开更多
关键词 组学技术 食品风味分析 感官组学 代谢组学 蛋白质组学 肽组学 脂质组学
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基于膜分离及柱色谱技术的烟草提取物精加工产品的制备
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作者 史清照 范武 +5 位作者 任瑞冰 柴国璧 张文龙 张启东 张建勋 李河霖 《轻工学报》 北大核心 2025年第5期101-109,共9页
为高效利用废弃烟叶资源并拓展其多元化精加工产品体系,以废弃烟叶为原料,采用乙醇水溶液加热浸提制备烟草提取物,利用膜分离及二维柱色谱技术对烟草提取物进行精加工,通过感官评价筛选风格特征突出的特色风味组群,并对组群间的风味重... 为高效利用废弃烟叶资源并拓展其多元化精加工产品体系,以废弃烟叶为原料,采用乙醇水溶液加热浸提制备烟草提取物,利用膜分离及二维柱色谱技术对烟草提取物进行精加工,通过感官评价筛选风格特征突出的特色风味组群,并对组群间的风味重组工艺进行探索,同时采用Py-GC-MS技术对重组样品进行成分分析。结果表明:水提法获得的烟草提取物的产率最高且感官评价综合表现较好;精加工共获得了16个组群,其中膜分离5 nm截留液及柱色谱分离的A1、C1、E2流份的感官效果各具特色,可作为烟草提取物的特色风味组群;重组样品中,1^(#)和2^(#)重组样品能够提高卷烟的烤烟烟香、烘焙香、清香、甜香等特征且整体感官效果较好;1^(#)和2^(#)重组样品的热裂解产物中以杂环类及芳香族化合物居多,包含甜香、清香、坚果香等香气类型。 展开更多
关键词 卷烟 烟草提取物 特色风味组群 重组 感官评价
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大豆苷元聚合物前药:合成及其抗菌消炎生物应用研究
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作者 伍凡 李圆凤 +1 位作者 史林启 刘勇 《高分子学报》 北大核心 2025年第6期913-923,共11页
针对细菌感染治疗中对抗菌和消炎一体化系统的需求,以及聚合物前药在合成方面的局限性,本研究设计并构建了一种主链含有大豆苷元(Daidzein,Dai)的三嵌段聚-β-氨基酯(Dai-encapsulating poly-β-amino ester,D-PAE).D-PAE纳米药物的叔... 针对细菌感染治疗中对抗菌和消炎一体化系统的需求,以及聚合物前药在合成方面的局限性,本研究设计并构建了一种主链含有大豆苷元(Daidzein,Dai)的三嵌段聚-β-氨基酯(Dai-encapsulating poly-β-amino ester,D-PAE).D-PAE纳米药物的叔胺片段在细菌感染的酸性环境中能够质子化,转变为正电荷;同时,感染部位高表达的细菌酯酶能够水解其主链中的酯键,释放出Dai,从而发挥高效的抗菌和消炎作用.体外与体内实验表明,D-PAE纳米药物相比于纯药具有更高的生物活性,并且表现出良好的生物相容性.本研究为聚合物前药的设计,合成及其生物医用提供了重要参考与新思路. 展开更多
关键词 聚合物前药 纳米药物 响应性释放 细菌感染 靶向识别
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风味科学的研究内涵与前沿挑战 被引量:1
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作者 谢剑平 毛健 +12 位作者 张启东 郭露露 郝志林 刘畅 张辰 崔琨 王景蓉 刘兴余 柴国璧 范武 史清照 孙世豪 张文娟 《食品科学技术学报》 北大核心 2025年第1期1-16,共16页
风味是食品感知的主要内容,也是人类感官效应的重要组成部分,对人们的情感、认知以及行为取向等具有深远影响。现代科学技术的不断发展,促进了对风味所属的化学感官效应的科学化认知,风味科学在理论与应用层面的重要性也日益凸显。然而... 风味是食品感知的主要内容,也是人类感官效应的重要组成部分,对人们的情感、认知以及行为取向等具有深远影响。现代科学技术的不断发展,促进了对风味所属的化学感官效应的科学化认知,风味科学在理论与应用层面的重要性也日益凸显。然而,由于风味效应感知与调控的复杂性以及相关研究涉及多领域、多学科的交叉融合,目前人们对于风味科学内涵的认识尚不十分清晰。从嗅觉、味觉和化学物理觉3个基本维度出发,通过系统梳理和总结近年来风味科学研究领域取得的成果与进展,融合化学、生物学、医药学、工程学等多学科的研究前沿与热点,阐述了风味科学研究内涵的5个方面:风味特征解码与重构、风味受体识别与功能、风味神经效应与感知、风味物质功效与健康、风味设计评价与调控,在此基础上进一步提出了风味科学研究面临的前沿与挑战。风味科学的发展不但对于基础科学研究具有重大的学术价值,而且对于提高风味相关产业的核心竞争力也有着重要的应用价值。研究旨在以此加强人们对风味科学的理解和重视,为风味科学的未来发展提供参考。 展开更多
关键词 风味科学 嗅觉 味觉 化学物理觉 研究内涵 前沿挑战
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基于细胞自噬的维生素C抗黑素生成作用研究
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作者 张帆 贺东琴 +3 位作者 卞前进 吴凡 秦毅 盘瑶 《日用化学工业(中英文)》 北大核心 2025年第1期83-88,共6页
本研究旨在探讨细胞自噬通路对维生素C(VC)抑制小鼠黑素瘤细胞(B16)中黑色素生成的调控作用。采用MTT法检测VC对B16细胞的最大安全剂量,通过加入α-促黑激素(α-MSH)诱导B16细胞的黑色素生成,再使用自噬抑制剂3-甲基腺嘌呤(3-MA)研究细... 本研究旨在探讨细胞自噬通路对维生素C(VC)抑制小鼠黑素瘤细胞(B16)中黑色素生成的调控作用。采用MTT法检测VC对B16细胞的最大安全剂量,通过加入α-促黑激素(α-MSH)诱导B16细胞的黑色素生成,再使用自噬抑制剂3-甲基腺嘌呤(3-MA)研究细胞自噬在VC的抗黑素生成作用机制。实验结果发现,VC在500μg/mL及以下质量浓度对B16细胞存活无影响。20和50μg/mL的VC可显著抑制α-MSH诱导的B16细胞黑色素合成(p<0.01)。与空白组相比,VC可显著诱导B16细胞中自噬相关蛋白LC3-II与p62表达上升,mTOR蛋白表达下降(p<0.05)。为进一步探究自噬对黑色素生成的影响,使用自噬抑制剂3-MA预处理B16细胞,发现3-MA阻断了VC诱导的B16细胞自噬上调,同时逆转VC的抗黑色素生成作用。本研究结果表明VC可通过激活B16细胞的自噬系统抑制黑色素生成。 展开更多
关键词 维生素C 黑色素 自噬 体外试验
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化妆品活性成分通过细胞自噬发挥护肤功效的研究进展
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作者 吴凡 张嘉琪 +3 位作者 秦毅 王俊 吴宗翰 盘瑶 《日用化学工业(中英文)》 北大核心 2025年第6期803-810,共8页
自噬作为一种细胞稳态维持机制,可清除受损或多余的蛋白质和细胞器。一些化妆品活性成分可通过调节自噬,清除细胞中的废物和调节相关通路与细胞功能,从而发挥修复细胞损伤、减缓非酶糖基化进程、修护皮肤屏障损伤,减少黑色素生成与皮脂... 自噬作为一种细胞稳态维持机制,可清除受损或多余的蛋白质和细胞器。一些化妆品活性成分可通过调节自噬,清除细胞中的废物和调节相关通路与细胞功能,从而发挥修复细胞损伤、减缓非酶糖基化进程、修护皮肤屏障损伤,减少黑色素生成与皮脂分泌等作用,在化妆品开发应用中存在巨大的前景。文章综述了自噬在抗衰老、修护皮肤屏障、美白与控油功效方面发挥的作用及其分子机制,归纳了调节自噬改善皮肤状态的化妆品活性成分,最后对其在化妆品行业中的发展前景和开发方向进行了展望。 展开更多
关键词 自噬 化妆品 活性成分 皮肤屏障
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活性炭对卷烟感官品质和烟气风味成分构成的影响
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作者 董振山 徐石磊 +5 位作者 宋凌勇 朱云贺 范武 关体青 史清照 姬凌波 《南昌大学学报(理科版)》 2025年第1期68-75,共8页
为了考察活性炭对卷烟烟气感官品质和成分构成的影响,以空白卷烟和加活性炭卷烟为研究对象,对卷烟进行感官品质评价,利用气相色谱-质谱技术(GC-MS)测定了两种样品卷烟烟气中酸味、酸香、果香、花香和奶香成分组群的释放量,并依据各成分... 为了考察活性炭对卷烟烟气感官品质和成分构成的影响,以空白卷烟和加活性炭卷烟为研究对象,对卷烟进行感官品质评价,利用气相色谱-质谱技术(GC-MS)测定了两种样品卷烟烟气中酸味、酸香、果香、花香和奶香成分组群的释放量,并依据各成分嗅觉阈值计算其气味活性值(OAV),比较了两种卷烟烟气风味成分含量的差异性,分析了活性炭对卷烟烟气中风味成分释放的影响。结果表明:①活性炭可对卷烟感官品质产生积极影响,使卷烟在多个维度的评分提高0.5~1分;②加活性炭卷烟主流烟气中酸味、酸香、果香、花香和奶香成分的总释放量均低于空白卷烟,其中,全部果香和花香成分释放量均低于空白卷烟,而酸香、酸味和奶香成分释放量有部分升高;③加活性炭卷烟主流烟气中酸香、奶香成分的总OAV提高,而酸味、果香和花香成分的总OAV降低。 展开更多
关键词 卷烟 活性炭 感官评价 主流烟气 风味成分
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Research progress of high-entropy cathode materials for sodium-ion batteries 被引量:1
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作者 fan wu Shaoyang wu +2 位作者 Xin Ye Yurong Ren Peng Wei 《Chinese Chemical Letters》 2025年第4期20-33,共14页
In recent years,sodium-ion batteries(SIBs)have become one of the hot discussions and have gradually moved toward industrialization.However,there are still some shortcomings in their performance that have not been well... In recent years,sodium-ion batteries(SIBs)have become one of the hot discussions and have gradually moved toward industrialization.However,there are still some shortcomings in their performance that have not been well addressed,including phase transition,structural degradation,and voltage platform.High entropy materials have recently gained significant attention from researchers due to their effects on thermodynamics,dynamics,structure,and performance.Researchers have attempted to use these materials in sodium-ion batteries to overcome their problems,making it a modification method.This paper aims to discuss the research status of high-entropy cathode materials for sodium-ion batteries and summarize their effects on sodium-ion batteries from three perspectives:Layered oxide,polyanion,and Prussian blue.The infiuence on material structure,the inhibition of phase transition,and the improvement of ion diffusivity are described.Finally,the advantages and disadvantages of high-entropy cathode materials for sodium-ion batteries are summarized,and their future development has prospected. 展开更多
关键词 High-entropy material Sodium-ion battery Cathode materials Phase transition Structure
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枫槭浸膏烤甜香风味组群重组
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作者 田雨 张奇 +5 位作者 褚继登 马广文 王珺 范武 周利峰 刘永宁 《香料香精化妆品》 2025年第3期100-108,共9页
为了进一步凸显枫槭浸膏烤甜香风格特征,提高同源天然香料产品的多样性,以优选的干物质含量为54%的枫槭浸膏为原料,采用四级膜分离技术与二维柱色谱技术,分别得到枫槭浸膏风味间接贡献成分与直接贡献组分,并进一步开展风味组群重组研究... 为了进一步凸显枫槭浸膏烤甜香风格特征,提高同源天然香料产品的多样性,以优选的干物质含量为54%的枫槭浸膏为原料,采用四级膜分离技术与二维柱色谱技术,分别得到枫槭浸膏风味间接贡献成分与直接贡献组分,并进一步开展风味组群重组研究。结果表明,枫槭浸膏膜分离组分MJ2、MJ3以及二维柱色谱分离组分B1能够明显提升参比卷烟香气、丰富性、杂气、烤烟烟香、甜香和烘焙香等指标。GC-MS分析结果表明,MJ2和MJ3在300℃时检测到10、12种挥发性成分,在600℃时分别检测到43、49种挥发性成分。B1组分检测到74种挥发性成分,其中含有大量的焦甜香、烘焙香、奶香成分。通过正交试验对优选的3种风味组群进行重组研究,得到了烤甜香特征鲜明的枫槭浸膏产品。 展开更多
关键词 枫槭浸膏 膜分离 二维柱色谱 风味组群
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中药骨蚀灵胶囊对早期兔激素性股骨头坏死的干预作用 被引量:14
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作者 范武 于雪峰 +1 位作者 任向楠 陈凯云 《实用医学杂志》 CAS 北大核心 2018年第13期2141-2145,共5页
目的探讨骨蚀灵胶囊对早期兔激素性股骨头坏死(SANFH)脂质代谢变化特点和其防治作用的机制。方法 48只日本大耳兔随机分为对照组、模型组、骨蚀灵胶囊组、洛伐他汀组。除对照组外,使用大剂量激素构建股骨头坏死模型,并按照实验计划进行... 目的探讨骨蚀灵胶囊对早期兔激素性股骨头坏死(SANFH)脂质代谢变化特点和其防治作用的机制。方法 48只日本大耳兔随机分为对照组、模型组、骨蚀灵胶囊组、洛伐他汀组。除对照组外,使用大剂量激素构建股骨头坏死模型,并按照实验计划进行药物干预。在第2、4周测定各组血清总胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白(HDL)和低密度脂蛋白(LDL)水平,观察并分析各组核磁共振图像和组织病理学改变。结果第2周时,与对照组相比,其余三组的TC、TG、LDL均明显升高(P<0.01),而HDL明显降低(P<0.01);第4周时,骨蚀灵胶囊组、洛伐他汀组兔血清中的TC、TG、LDL水平较模型组明显降低(P<0.05,P<0.01),但仍高于对照组(P<0.01)。病理切片及核磁检测显示模型组出现明显的股骨头坏死表现,而骨蚀灵胶囊组和洛伐他汀组病理改变较模型组轻。结论骨蚀灵胶囊可早期调节机体血清脂质水平,降低血脂,从而起到预防和缓解股骨头坏死进展的作用。 展开更多
关键词 股骨头坏死 激素 脂质代谢 骨蚀灵胶囊
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Mutual Relationship between Grip Strength and Cognitive Function in Chinese Middle-Aged and Elderly People over 10 Years:A Cross-Lagged Panel Analysis
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作者 Jiaqi Wang Ye Ruan +5 位作者 Yanfei Guo Shuangyuan Sun Anli Jiang Yujun Dong Yan Shi fan wu 《Biomedical and Environmental Sciences》 2025年第10期1308-1313,共6页
In 2019,China had over 13.14 million dementia cases,with incidence rates of(56.47–207.08)/100,000[1].Early cognitive impairment—a key dementia symptom—reduces quality of life,increases care dependence,and lowers su... In 2019,China had over 13.14 million dementia cases,with incidence rates of(56.47–207.08)/100,000[1].Early cognitive impairment—a key dementia symptom—reduces quality of life,increases care dependence,and lowers survival in older adults[2].A decline in physical function can also be observed in older adults with increasing age.Grip strength has been shown to be a marker of overall physiological function in older adults. 展开更多
关键词 decline physical function physiological function cognitive function cognitive impairment Chinese middle aged elderly grip strength cross lagged panel analysis DEMENTIA
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Expert consensus on the diagnosis and treatment of non-small cell lung cancer with MET alteration
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作者 Huijing Feng Yang Xia +106 位作者 Wenxian Wang Chunwei Xu Qian Wang Zhengbo Song Ziming Li Jinpu Yu Wenzhao Zhong Zhijie Wang Yongchang Zhang Jingjing Liu Shirong Zhang Xiuyu Cai Anwen Liu Wen Li Ping Zhan Hongbing Liu Tangfeng Lyu Liyun Miao Lingfeng Min Gen Lin Long Huang Jingping Yuan Zhansheng Jiang Xingxiang Pu Chuangzhou Rao DongqingLyu Zongyang Yu Xiaoyan Li Chuanhao Tang Chengzhi Zhou Qi Mei Hui Guo Qian Chu Rui Meng Xuewen Liu Jingxun wu Jin Zhou Zhengfei Zhu Weiwei Pan Fei Pang Meizhen Hu Kai Wang fan wu Bingwei Xu Ling Xu Liping Wang Youcai Zhu Jisheng Li Yanru Xie Xinqing Lin Jing Cai Lin Wang Yingying Du Wang Yao Xuefei Shi Xiaomin Niu Dongmei Yuan Yanwen Yao Jing Kang Jiatao Zhang Chao Zhang Wenbin Gao Jianhui Huang Yinbin Zhang Pingli Sun Hong Wang Mingxiang Ye Dong Wang Zhaofeng Wang Yue Hao Zheng Wang Bing Wan Donglai Lyu Xiaodong Jiao Lin Shi Gang Lan Shengjie Yang Yanhong Shang Yina Wang Bihui Li Gang Jin Kang Zheng Jun Ma Wenfeng Li Zhang Zhang Zhongwu Li Yuan Li Zhefeng Liu Xuelei Ma Nong Yang Lin wu Qiming Wang Guansong Wang Zhuan Hong Jiandong Wang Meiyu fang Yong fang Xixu Zhu Yi Shen Ke Wang Xiubao Ren Yiping Zhang Shenglin Ma Junping Zhang Yong Song Wenfeng fang Yuanzhi Lu 《Cancer Biology & Medicine》 2025年第3期237-265,共29页
Alterations in the mesenchymal-epithelial transition factor(MET)gene are critical drivers of non-small cell lung cancer(NSCLC).In recent years advances in precision therapies targeting MET alterations have significant... Alterations in the mesenchymal-epithelial transition factor(MET)gene are critical drivers of non-small cell lung cancer(NSCLC).In recent years advances in precision therapies targeting MET alterations have significantly expanded treatment options for NSCLC patients.These alterations include MET exon 14 skipping mutations(MET exon 14 skipping),MET gene amplifications,MET point mutations(primarily kinase domain mutations),and MET protein overexpression.Accurate identification of these alterations and appropriate selection of patient populations and targeted therapies are essential for improving clinical outcomes.The East China Lung Cancer Group,Youth Committee(ECLUNG YOUNG,Yangtze River Delta Lung Cancer Cooperation Group)has synthesized insights from China’s innovative drug development landscape and clinical practice to formulate an expert consensus on the diagnosis and treatment of NSCLC patients with MET alterations.This consensus addresses key areas,such as optimal testing timing,testing methods,testing strategies,quality control measures,and treatment approaches.By offering standardized recommendations,this guidance aims to streamline diagnostic and therapeutic processes and enhance clinical decision-making for NSCLC with MET alterations. 展开更多
关键词 Mesenchymal-epithelial transition factor MET exon 14 skipping mutation MET amplification non-small cell lung cancer precision medicine targeted therapy tyrosine kinase
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Benchmark experiment system for^(252)Cf spontaneous fission source usingγtagging
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作者 Yu-Ting Wei Chang-Lin Lan +11 位作者 Bo Gao Xian-Lin Yang Gong Jiang Jia-Hao Wang Bo Xie Yang-Bo Nie Yan-Liang Chang Ge Zhang fan wu Kuo-Zhi Xu Shi-Long Liu Xi-Chao Ruan 《Nuclear Science and Techniques》 2025年第11期221-231,共11页
Benchmark experiments are indispensable for the development of neutron nuclear data evaluation libraries.Given the lack of domestic benchmarking of nuclear data in the fission energy region,this study developed a neut... Benchmark experiments are indispensable for the development of neutron nuclear data evaluation libraries.Given the lack of domestic benchmarking of nuclear data in the fission energy region,this study developed a neutron leakage spectrum measurement system using a spherical sample based on the^(252)Cf spontaneous fission source.The EJ309 detector(for highenergy measurements)and CLYC detector(for low-energy measurements)were combined to measure the time-of-flight spectrum using theγtagging method.To assess the performance of the system,the time-of-flight spectrum without a sample was measured first.The experimental spectra were consistent with those simulated using the Monte Carlo method and the standard^(252)Cf spectrum from ISO:8529-1.This demonstrates that the system can effectively measure the neutron events in the 0.15-8.0 MeV range.Then,a spherical polyethylene sample was used as the standard to verify the accuracy of the system for the benchmark experiment.The simulation results were obtained using the Monte Carlo method with evaluated data from the ENDF/B-Ⅷ.0,CENDL-3.2,JEFF-3.3,and JENDL-5 libraries.The measured neutron leakage spectra were compared with the corresponding simulated results for the neutron spectrum shape and calculated C/E values.The results showed that the simulated spectra with different data libraries reproduced the experimental results well in the 0.15-8.0 MeV range.This study confirms that the leakage neutron spectrum measurement system based on the^(252)Cf source can perform benchmarking and provides a foundation for evaluating neutron nuclear data through benchmark experiments. 展开更多
关键词 ^(252)Cf Neutron leakage spectrum Benchmark experiment Time-of-flight technique Evaluated nuclear data Spherical samples
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浙江省舟山海岛地区青少年腹部脂肪定量1H-MRS联合血清IGF-1对NAFLD严重程度的评估价值
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作者 吴帆 章杰 +3 位作者 孙文 李嘉霖 张文奇 白敏 《世界华人消化杂志》 2025年第4期308-315,共8页
背景舟山海岛地区由于其独特的生活环境,尤其对青少年肥胖的研究报道较少,在个性化医疗的今天,更加精细化的诊断对患者疾病的治疗效果更有意义,且我国有广阔的海岸线,同时目前临床尚缺少氢质子磁共振波谱(1H-magnetic resonance spectro... 背景舟山海岛地区由于其独特的生活环境,尤其对青少年肥胖的研究报道较少,在个性化医疗的今天,更加精细化的诊断对患者疾病的治疗效果更有意义,且我国有广阔的海岸线,同时目前临床尚缺少氢质子磁共振波谱(1H-magnetic resonance spectroscopy,1H-MRS)、血清胰岛素样生长因子-1(insulin-like growth factor-1,IGF-1)联合在非酒精性脂肪性肝病(non-alcoholic fatty liver disease,NAFLD)病情评估中的相关研究.目的探讨海岛地区青少年腹部脂肪定量1H-MRS联合IGF-1对NAFLD严重程度的评估价值.方法选取2022-01/2024-06舟山市妇女儿童医院收治的99例疑似NAFLD青少年患者,根据病理诊断分为非NAFLD组(41例),轻度NAFLD组(37例),中重度NAFLD组(21例).比较三组代谢相关指标[体质量指数(body mass index,BMI)、餐后2 h血糖(2-hour postprandial glucose,2HPG)、甘油三酯(triglycerides,TG)、总胆固醇(total cholesterol,TC)、谷丙转氨酶(alanine aminotransferase,ALT)、谷草转氨酶(aspartate aminotransferase,AST)、高密度脂蛋白胆固醇(high-density lipoprotein cholesterol,HDL-C)、低密度脂蛋白胆固醇(low-density lipoprotein cholesterol,LDL-C)].比较三组1H-MRS波谱值、波谱内肝脏脂肪(intrahepatic lipid,IHL)、血清IGF-1,以Pearson相关系数法分析IHL、血清IGF-1与代谢相关指标、1H-MRS波谱值的相关性,采用点二列相关性分析IHL、血清IGF-1与病情严重程度的相关性,分析IHL、血清IGF-1对NAFLD严重程度的评估价值.结果中重度NAFLD组HDL-C低于非NAFLD组、轻度NAFLD组,BMI、2HPG、ALT、AST、TG、TC、LDL-C均高于非NAFLD组、轻度NAFLD组(P<0.05);相比于非NAFLD组、轻度NAFLD组,中重度NAFLD组水峰峰值较低,脂峰峰值较高(P<0.05);中重度NAFLD组IHL水平高于非NAFLD组、轻度NAFLD组,IGF-1低于非NAFLD组、轻度NAFLD组(P<0.05);BMI、2HPG、ALT、AST、TG、TC、LDL-C与IHL呈正相关,与IGF-1呈负相关(P<0.05),HDL-C、水峰峰值、脂峰峰值与IHL呈负相关,与IGF-1呈正相关(P<0.05);NAFLD病情严重程度与IHL呈正相关,与血清IGF-1呈负相关(P<0.05);受试者工作特征曲线结果显示,IHL、血清IGF-1评估NAFLD严重程度的受试者工作特征曲线及曲线下面积(area under the curve,AUC)分别为0.740(95%CI:0.608-0.846)、0.721(95%CI:0.588-0.831),二者联合评估的AUC最大,为0.896(95%CI:0.787-0.961)(P<0.05);IHL高水平(>18.51%)、血清IGF-1低水平(≤0.24μg/L)可显著区分中重度NAFLD发生风险(P<0.05).结论腹部脂肪定量1H-MRS、血清IGF-1与青少年机体代谢密切相关,IHL、血清IGF-1联合对NAFLD严重程度有较高评估价值. 展开更多
关键词 非酒精性脂肪性肝病 青少年 胰岛素样生长因子-1 氢质子磁共振波谱 水峰峰值 脂峰峰值
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NSUN2 Promotes Cardiac Hypertrophy by Activating LARP1–GATA4 Axis
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作者 Yingqi Liu fan wu +23 位作者 Kuiwu Liu Shuting Yu Changhao Wang Xin Li Zhiyong Sun Wanhong Li Yi Zhang Tiantian Ju Qian Liu Min Huang Zhongting Mei Zhezhe Qu Meixi Lu Xiaochen Pang Yingqiong Jia Jianhao Jiang Shunkang Dou Na Li Yaozhi Zhang Ying Li Chuanhao Huang Yuechao Dong Baofeng Yang Weijie Du 《Engineering》 2025年第8期297-310,共14页
Pathological cardiac hypertrophy contributes to the development of heart failure(HF).NOL1/NOP2/Sun domain family member 2(NSUN2)is implicated in pathophysiological processes of many diseases.However,the function and o... Pathological cardiac hypertrophy contributes to the development of heart failure(HF).NOL1/NOP2/Sun domain family member 2(NSUN2)is implicated in pathophysiological processes of many diseases.However,the function and operation of NSUN2 in cardiac hypertrophy and HF remain unclear.Here,we observed a significant increase in the levels of NSUN2 expression in both human hearts with HF and in mouse hearts with hypertrophy induced by transverse aortic constriction(TAC)and angiotensin II(Ang II)treatment.Cardiomyocyte-specific knockout of NSUN2 attenuated the reduced cardiac ejection fraction(EF)and fractional shortening(FS)and the increased heart weight to tibial length(HW/TL)upon either TAC or Ang II infusion.Conversely,cardiac-specific overexpression of NSUN2 resulted in cardiac remodeling as indicated by a prominent increase in hypertrophic growth and cardiac fibrosis and a robust decline in cardiac EF and FS.Mechanistically,NSUN2 induces 5-methylcytosine(m5C)modification of La-related protein 1(LARP1)to enhance its messenger RNA(mRNA)stability,which is mediated by Y-box binding protein 1(YBX1).Increased LARP1 further interacts with GATA binding protein 4(GATA4)mRNA and prevents its degradation.LARP1 silencing partially attenuates TAC and NSUN2 induced cardiac hypertrophy and HF.Collectively,this study provides a new insight into the central role of NSUN2 in cardiac hypertrophy,indicating that NSUN2 may serve as a novel therapeutic target for HF. 展开更多
关键词 Cardiac hypertrophy 5-Methylcytosine NOL1/NOP2/Sun domain family member 2 Y-box binding protein 1 La-related protein 1 GATA binding protein 4
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基于SHS-GC-MS和GC-IMS的对两种雪茄烟挥发性香味成分的分析与研究 被引量:9
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作者 胡军 余邦林 +7 位作者 姬凌波 朱贝贝 薛芳 范武 徐恒 胡希 蒋忠荣 李东亮 《中国烟草学报》 CAS CSCD 北大核心 2023年第2期111-121,共11页
【目的】为明确雪茄烟挥发性香味成分,比较不同雪茄烟挥发性香味成分的差异性。【方法】采用静态顶空-气质联用仪(SHS-GC-MS)和气相色谱离子迁移谱(GC-IMS)两种分析检测技术,对长城2号和蒙特4号两种雪茄烟的挥发性香味成分进行检测,并... 【目的】为明确雪茄烟挥发性香味成分,比较不同雪茄烟挥发性香味成分的差异性。【方法】采用静态顶空-气质联用仪(SHS-GC-MS)和气相色谱离子迁移谱(GC-IMS)两种分析检测技术,对长城2号和蒙特4号两种雪茄烟的挥发性香味成分进行检测,并结合主成分分析(PCA)和偏最小二乘-判别分析(PLS-DA)方法分析了两种雪茄烟的香味主要差异成分。【结果】(1)从嗅香来看,两支雪茄烟的主体香韵均为较为明显的晾晒烟特征香气和蜂蜜样的甜香。蒙特4号的花香、木香和可可香气更加明显一些,长城2号的甜香和膏香则相对较强,并稍带果甜,香气比较厚实浓郁。(2)通过SHS-GC-MS分析检测技术从长城2号雪茄烟中鉴定出18种挥发性香味成分,从蒙特4号中鉴定出30种挥发性香味成分;蒙特4号中异龙脑、乙酸异龙脑酯、α-柏木烯、罗汉柏烯等成分的含量明显高于长城2号;而3,5-二甲基苯酚和6-甲基-5-庚烯-2-酮两种香味成分仅存在于长城2号中。(3)GC-IMS在两种雪茄烟中共鉴定出47种成分,包括了3种酸类、4种酯类、12种酮类、10种醛类、11种醇类、2种杂环类和5种烯烃类成分;运用PCA和PLS-DA的分析方法发现两种雪茄烟的香味特征成分在模型中实现了显著分离,香味成分差异显著。以变量重要性排序(VIP)>1.0为标准,其主要差异成分为环己酮、2,3-丁二酮、2-戊酮、苯甲醛、反式-2-戊烯醛二聚体、双戊烯。【结论】SHS-GC-MS与GC-IMS两种分析检测技术的结合可以检测出两款雪茄烟更多的挥发性香味成分,辅以嗅香评价、统计学分析方法可以实现不同雪茄烟的差异性分析。 展开更多
关键词 静态顶空-气相色谱质谱 气相色谱离子迁移谱 雪茄烟 挥发性香味成分
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Electron structure customization of molybdenum phosphide via lanthanum doping toward highly efficient overall water splitting
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作者 Xin Ye He Ma +5 位作者 Shaoyang wu fan wu Xiangqun Zhuge Jiangchuan Liu Yurong Ren Peng Wei 《Journal of Materials Science & Technology》 2025年第15期227-235,共9页
Due to its high electrical conductivity and platinum-like electronic structure,molybdenum phosphide(MoP)has attracted extensive attention as a potential catalyst for the hydrogen evolution reaction(HER)by water splitt... Due to its high electrical conductivity and platinum-like electronic structure,molybdenum phosphide(MoP)has attracted extensive attention as a potential catalyst for the hydrogen evolution reaction(HER)by water splitting.Nevertheless,in the oxygen evolution reaction(OER),the electrocatalytic performance of MoP did not achieve satisfactory results.Therefore,novel nitrogen-doped carbon-encapsulated Ladoped MoP nanoparticles(La-MoP@N/C)are synthesized,which show outstanding durability and electrocatalytic activity in both HER and OER.Detailed structural characterization and calculations confirm that La doping not only effectively adjusts the electron density around Mo and P atoms,accelerates the adsorption and desorption processes,but also increases the number of active sites.Low overpotentials of 113 and 388 mV for HER and OER at 10 mA cm−2 are achieved with the optimized La0.025-Mo0.975P@N/C.Furthermore,the two-electrode electrolyzer assembled with La0.025-Mo0.975P@N/C also presents impressive water splitting performance.This study indicates that rare earth doping can be used as an efficient strategy to control the local electronic structure of phosphides precisely,which can also be extended to other electrocatalysts. 展开更多
关键词 Water splitting Rare earth metal doping Molybdenum phosphide Oxygen evolution reaction Hydrogen evolution reaction
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Knowledge-Empowered,Collaborative,and Co-Evolving AI Models:The Post-LLM Roadmap
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作者 Fei wu Tao Shen +17 位作者 Thomas Back Jingyuan Chen Gang Huang Yaochu Jin Kun Kuang Mengze Li Cewu Lu Jiaxu Miao Yongwei Wang Ying Wei fan wu Junchi Yan Hongxia Yang Yi Yang Shengyu Zhang Zhou Zhao Yueting Zhuang Yunhe Pan 《Engineering》 2025年第1期87-100,共14页
Large language models(LLMs)have significantly advanced artificial intelligence(AI)by excelling in tasks such as understanding,generation,and reasoning across multiple modalities.Despite these achievements,LLMs have in... Large language models(LLMs)have significantly advanced artificial intelligence(AI)by excelling in tasks such as understanding,generation,and reasoning across multiple modalities.Despite these achievements,LLMs have inherent limitations including outdated information,hallucinations,inefficiency,lack of interpretability,and challenges in domain-specific accuracy.To address these issues,this survey explores three promising directions in the post-LLM era:knowledge empowerment,model collaboration,and model co-evolution.First,we examine methods of integrating external knowledge into LLMs to enhance factual accuracy,reasoning capabilities,and interpretability,including incorporating knowledge into training objectives,instruction tuning,retrieval-augmented inference,and knowledge prompting.Second,we discuss model collaboration strategies that leverage the complementary strengths of LLMs and smaller models to improve efficiency and domain-specific performance through techniques such as model merging,functional model collaboration,and knowledge injection.Third,we delve into model co-evolution,in which multiple models collaboratively evolve by sharing knowledge,parameters,and learning strategies to adapt to dynamic environments and tasks,thereby enhancing their adaptability and continual learning.We illustrate how the integration of these techniques advances AI capabilities in science,engineering,and society—particularly in hypothesis development,problem formulation,problem-solving,and interpretability across various domains.We conclude by outlining future pathways for further advancement and applications. 展开更多
关键词 Artificial intelligence Large language models Knowledge empowerment Model collaboration Model co-evolution
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Adult split liver transplantation to treat liver cancer: a single-center retrospective study
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作者 Qiang Sun Haoze Cao +11 位作者 Xuesong Bai Xin Han Wanlu You Zhongquan Sun Yixin Zhang Xiaochang wu Feng fang fan wu Lianyue Yang Sheng Yan Yuan Ding Weilin Wang 《World Journal of Emergency Medicine》 2025年第1期57-62,共6页
BACKGROUND: The increasing morbidity of liver cancer has led to a growing demand for transplantation. Split liver transplantation(SLT) is a promising way to ameliorate organ shortages. However, the safety and efficacy... BACKGROUND: The increasing morbidity of liver cancer has led to a growing demand for transplantation. Split liver transplantation(SLT) is a promising way to ameliorate organ shortages. However, the safety and efficacy of SLT are still controversial. The aim of this study was to assess the clinical outcome of SLT in liver cancer patients at our center. METHODS: A total of 74 patients who received liver transplantation at a tertiary hospital from March 2019 to July 2023 were retrospectively studied, of whom 37 recipients underwent SLT and 37 recipients underwent whole-graft liver transplantation(WGLT). Clinical data were analyzed and compared between patients who underwent SLT and WGLT.RESULTS: SLT and WGLT were successfully performed, with no intraoperative transplantrelated mortality. Postoperatively, no significant differences in total bilirubin(TB, P=0.266), alanine transaminase(ALT, P=0.403) and aspartate transaminase(AST, P=0.160) levels within 30 d were detected between the two groups. The transplant-related mortality rates were 8.1% in the SLT group and 5.4% in the WGLT group within 30 d of surgery(P=1.000), and 10.8% and 8.1%, respectively, at 90 d after surgery(P=1.000). There were no significant differences in overall survival(OS) and progress-free survival(PFS) between the SLT and WGLT groups(P=0.910, P=0.190). CONCLUSION: Our results show that SLT does not imply additional risks in treating liver cancer compared with WGLT. 展开更多
关键词 ADULT Split liver transplantation Liver cancer PROGNOSIS RETROSPECTIVE
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