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Fecal microbiota transplantation from blueberry and blackberry anthocyanins-supplemented mice ameliorated metabolic syndrome by regulating gut microbiota in a high-fat diet model 被引量:1
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作者 Lanlan Du Xiaoqin Ding +7 位作者 yan chen Han chen Han Lü yanan Gai Tunyu Jian Wenlong Wu Jian chen Weilin Li 《Food Science and Human Wellness》 2025年第10期3992-4007,共16页
Blueberry anthocyanins(VA)and blackberry anthocyanins(RA)showed benefits on metabolic syndrome(MS)induced by high-fat diet(HFD)in mice.In this study,we investigated whether the therapeutic effects of VA and RA were ac... Blueberry anthocyanins(VA)and blackberry anthocyanins(RA)showed benefits on metabolic syndrome(MS)induced by high-fat diet(HFD)in mice.In this study,we investigated whether the therapeutic effects of VA and RA were achieved by the gut microbiota regulation and whether these effects could be replicated through fecal microbiota transplantation(FMT)using the HFD caused MS model in pseudo-germ-free mice.The results demonstrated that the beneficial effects of VA and RA on MS,including reducing body weight gain and fat accumulation,improving glucose and lipid metabolism,and mitigating intestinal barrier damage,were attributed to the gut microbiota and could be replicated by FMT.16S r RNA sequencing analysis suggested that FMT from donor mice supplemented with VA and RA could regulate the gut microbiota composition.Particularly,FMT from RA supplemented mice displayed the potential to restore the diversity of gut microbiota and the ratio of Firmicutes to Bacteroidetes.Meanwhile,FMT from VA supplemented mice appeared to exert its effects by selectively influencing specific gut microbiota,such as the genus Akkermansia.Furthermore,our analysis identified 10 common differential amplicon sequence variants(ASVs)among groups compared to HFD-HFD group.Notably,ASV_36450 was negatively associated with metabolic parameters,suggesting that Lactobacillus might be the potential bacteria in regulating MS.Overall,our study demonstrated that FMT from VA and RA supplemented mice could ameliorate MS induced by HFD in mice through regulating specific gut microbiota. 展开更多
关键词 Metabolic syndrome Blueberry anthocyanins Blackberry anthocyanins Fecal microbiota transplantation Gut microbiota
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The Influence of the Urban-Rural Income Disparity on the Industrial Structure—Taking the Yangtze River Delta Region as an Example
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作者 yan chen Yuanyuan Sun Wanbin Li 《Open Journal of Statistics》 2022年第3期303-323,共21页
In this paper, the effect of the mediation effect is mainly used to test and analyze the regression model, and most scholars have studied the impact of the modernization of the industrial structure on the income gap. ... In this paper, the effect of the mediation effect is mainly used to test and analyze the regression model, and most scholars have studied the impact of the modernization of the industrial structure on the income gap. However, this paper is from another perspective, based on the social background of high-quality development, the main study is the impact mechanism of urban and rural income gap on the industrial structure, taking the Yangtze River Delta as the main research object, and specifically selecting 22 central cities in the Yangtze River Delta region, which is also one of the highlights of this study. The regression model is constructed by using the intermediary effect, and the four intermediary variables of fiscal expenditure (M<sub>1</sub>), fixed asset investment (M<sub>2</sub>), number of patent applications (M<sub>3</sub>), and total import and export (M<sub>4</sub>) are selected, which represent the role of the government, fixed asset investment, scientific and technological level and opening-up level, and study and analyze the inherent influence mechanism between each variable. Before doing specific research, I consulted the papers and literature of many other outstanding scholars, among which Cheng Yuhong and Cheng Chi’s “The Influence Mechanism of industrial structure of urban and rural income gap” [1] has great reference value for this paper. According to the research results, under the background of high-quality development in the Yangtze River Delta region, the expansion of the income gap between urban and rural areas will inhibit the upgrading of the industrial structure, so it is necessary to focus on building a new type of urbanization, accelerating the construction of an urban innovation system, optimizing the rural employment structure to narrow the income gap between urban and rural areas, and providing impetus for the continuous upgrading of the industrial structure. 展开更多
关键词 Income Gap Between Urban and Rural Areas Industrial Structure Upgrading High-Quality Development Normalization of the Epidemic Yangtze River Delta Region Mediation Effect Model SPSS
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基于可搜索属性加密的区块链智能建筑数据共享方案
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作者 晏晨 吴宏杰 +3 位作者 王陆平 陈静 顾涔 崔志明 《现代电子技术》 北大核心 2026年第6期71-76,共6页
随着信息技术的发展,许多智能建筑系统将数据存储在云服务器中,但集中式存储模式存在数据隐私泄露的潜在风险。用户在访问建筑管理数据时,常常耗费大量时间却无法确保数据的准确性。此外,大多数智能建筑数据共享方案缺乏对第三方修改数... 随着信息技术的发展,许多智能建筑系统将数据存储在云服务器中,但集中式存储模式存在数据隐私泄露的潜在风险。用户在访问建筑管理数据时,常常耗费大量时间却无法确保数据的准确性。此外,大多数智能建筑数据共享方案缺乏对第三方修改数据的审计机制。为了解决这些问题,结合可检索属性加密技术与区块链技术,提出一种基于可检索属性加密的区块链智能建筑数据共享方案。该方案将关键词和密文分别存储在建筑联盟区块链和云服务器上,有效解决了区块链存储空间有限和云服务器隐私泄露的问题;引入数据公开审计机制,防止第三方以虚假身份篡改云服务器中的数据,保障上传数据的真实性与可靠性;借助多项式方程关联多个关键词,实现用户的多关键词检索,提升数据获取的准确度;利用可检索属性加密技术实现对用户的安全检索。此外,设计一种基于树形结构的细粒度访问控制机制,进一步增强访问控制的灵活性和安全性。理论分析与实验验证结果表明,该方案具备较高的数据安全性,且检索效率优于其他方案。 展开更多
关键词 区块链技术 可检索属性加密技术 智能建筑数据共享 数据公开审计机制 多项式方程 细粒度访问控制机制
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FCAW-G自动焊在大壁厚在役油气管道B型套筒修复过程中的应用及组织性能研究
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作者 刘少柱 毕治强 +4 位作者 邓俊 闫臣 李荣光 侯磊 李学达 《精密成形工程》 北大核心 2026年第1期169-181,共13页
目的在FCAW-G自动焊工艺组织及性能研究基础上,探讨自动焊在B型套筒修复过程中的适用性。方法采用壁厚36 mm的Q345套筒对外径1016 mm、壁厚17.5 mm的X70主管道进行FCAW-G自动焊修复,通过现场焊接工艺模拟试验及组织性能分析,对FCAW-G自... 目的在FCAW-G自动焊工艺组织及性能研究基础上,探讨自动焊在B型套筒修复过程中的适用性。方法采用壁厚36 mm的Q345套筒对外径1016 mm、壁厚17.5 mm的X70主管道进行FCAW-G自动焊修复,通过现场焊接工艺模拟试验及组织性能分析,对FCAW-G自动焊的工艺参数进行了优化。结果当垫层焊接热输入为1.0~1.5 kJ/mm、填充焊接热输入为1.5~2.0 kJ/mm时,焊接成形良好,未出现氢致开裂和烧穿的现象;对接焊缝根焊道、填充焊道、盖面焊道微观组织为针状铁素体+粒状贝氏体+少量先共析铁素体,焊缝金属与两侧母材熔合良好;对焊接接头进行了无损检测及力学性能试验,试验结果均符合国家标准要求。结论FCAW-G自动焊工艺可用于在役管道的B型套筒修复,焊缝质量符合国内标准验收要求,实现了焊接质量和焊接效率的明显提升,推动了自动焊技术在国内高钢级、大口径天然气管道B型套筒在役焊接中的应用。 展开更多
关键词 在役管道 套筒修复 气体保护药芯焊丝 自动焊 焊接热输入
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新型10MW张力腿风电平台总体性能研究
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作者 申辉 王雨 +3 位作者 闫琛 刘伟 周全智 罗翔 《太阳能学报》 北大核心 2026年第1期550-559,共10页
综合考虑风电机组平台海上安装要求和在位工况环境载荷,根据浮体静稳性和动力学理论,提出一种全潜式的张力腿平台基础结构方案,平台上部布置10 MW风电机组,采用12根钢缆作为筋腱系统主体。建立风电机组-浮式平台-筋腱系统全耦合的一体... 综合考虑风电机组平台海上安装要求和在位工况环境载荷,根据浮体静稳性和动力学理论,提出一种全潜式的张力腿平台基础结构方案,平台上部布置10 MW风电机组,采用12根钢缆作为筋腱系统主体。建立风电机组-浮式平台-筋腱系统全耦合的一体化分析模型,对该张力腿平台方案在中国南海地区环境条件下的工况进行时域数值分析评估,结果表明该方案的张力腿平台俯仰运动性能优异,在50年一遇的设计环境条件下最大运动倾角不超过1°,采用钢缆的筋腱系统其强度和疲劳寿命安全系数满足规范校核要求。 展开更多
关键词 浮式风电 张力腿平台 10 MW风电机组 全潜式结构 钢缆筋腱 全耦合分析
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三维效应对海上风机单桩侧向刚度的影响
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作者 祝亮 王雨 +4 位作者 罗翔 曹淑刚 周全智 闫琛 黄欣羿 《河海大学学报(自然科学版)》 北大核心 2026年第1期160-166,共7页
为探究三维效应对海上风机大直径单桩的影响,针对不同土体中水平受荷的大直径单桩构建了只考虑沿桩身分布的径向和环向应力分量的二维桩土相互作用解析模型,基于该模型分析了三维效应对单桩集总刚度、桩身响应(水平位移、转角、剪力、弯... 为探究三维效应对海上风机大直径单桩的影响,针对不同土体中水平受荷的大直径单桩构建了只考虑沿桩身分布的径向和环向应力分量的二维桩土相互作用解析模型,基于该模型分析了三维效应对单桩集总刚度、桩身响应(水平位移、转角、剪力、弯矩)和分布式弹簧刚度的影响。结果表明:三维效应对单桩力控集总刚度、桩身变形与剪力响应的影响很大,而对位控集总刚度、弯矩分布影响不大;忽略三维效应会得到更大的桩身响应,进而导致设计保守;三维效应对p-y弹簧的影响不大,而考虑了三维效应的m-φ弹簧才是造成单桩集中刚度、桩身响应差异的根本原因,因此在大直径单桩的设计中应当考虑m-φ弹簧的影响。 展开更多
关键词 海上风机 大直径单桩 三维效应 竖向摩擦力 桩土相互作用
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Comparative characterization of triacylglycerols in human milk,infant formula,structured lipids,and plant oils using UPSFC-Q-TOF-MS
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作者 Jiayao Zhou yan chen +3 位作者 Jiadi yan Chunlin Wang Xingguo Wang Wei Wei 《Grain & Oil Science and Technology》 2026年第1期11-20,共10页
Triacylglycerol(TAG)components in human milk,infant formulas with different fat sources,and plant oils(palm oil,flaxseed oil,sunflower oil,corn oil,soybean oil,coconut oil,low erucic acid rapeseed oil,and high oleic a... Triacylglycerol(TAG)components in human milk,infant formulas with different fat sources,and plant oils(palm oil,flaxseed oil,sunflower oil,corn oil,soybean oil,coconut oil,low erucic acid rapeseed oil,and high oleic acid rapeseed oil)were analyzed and compared using ultraperformance supercritical fluid chromatography coupled with quadrupole time-of-flight mass spectrometry(UPSFC-Q-TOF-MS).Distinct TAG profiles were identified by lipidomics,principal component analysis(PCA),and heatmap visualization.Human milk was characterized by a high abundance of medium-and long-chain triacylglycerols(MLCTs),saturated-unsaturated-unsaturated(SUU)-type TAGs(sn-2 palmitic acid).In contrast,plant oils lacked MLCTs and SUU-type TAGs,containing mainly TAGs esterified long-chain polyunsaturated fatty acid.Breast milk contains about 27%MLCT,about 50%SUU-type triacylglycerols(which contain about 34%UPU-type triacylglycerols),which is significantly different from plant oils,structured fats and infant formulas.These findings provide a clear basis for optimizing the fat blend in infant formula to better mimic the unique TAG profile of human milk,thereby improving energy delivery and nutrient absorption for infants. 展开更多
关键词 TRIACYLGLYCEROL Milk lipids Human milk Infant formula Plant oil Medium-and long-chain triacylglycerol Palmitic acid Mass spectrometry
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Gas-involved photo-and electro-catalysis roadmap towards 2030
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作者 Kezhen Qi Zhidong Wei +24 位作者 Haibin Wang Hongyan Liang Dandan Ma Jian-Wen Shi Yifeng Li Xuepeng Xiang yan chen Bo Yu Chunchun Wang Zhuo Xing Claudio Imparato Aurelio Bifulco Daniil A.Lukyanov Elena V.Alekseeva Oleg V.Levin M.I.Chebanenko V.I.Popkov Tan Zhang Jinping Li Guang Liu Wei Li Linlin Song Rongzheng Ren Zhenhua Wang Jianmin Ma 《Chinese Chemical Letters》 2026年第1期226-246,共21页
The catalytic transferred of small molecules into high-value chemical products in green methods are highly perused,and has obtained huge attention.In this field,great progress has been achieved during the past five ye... The catalytic transferred of small molecules into high-value chemical products in green methods are highly perused,and has obtained huge attention.In this field,great progress has been achieved during the past five years.Followed by the roadmap(Chinese Chemical Letters,2019,30,2089-2109)written by us before five years,we think that it should be updated to give more insights in this field.Thus,we write the present roadmap based on the fast changed background.In this roadmap,oxygen and carbon dioxide reduction reactions(including at high temperature),photocatalytic hydrogen generation and carbon dioxide reduction reactions,(photo)electrocatalytic reduction of O_(2)to H_(2)O_(2)and NH_(3)generated from N_(2) are discussed.The progress and challenges in above catalytic processes are given.We believe this manuscript will give the researchers more suggestions and help them to obtain useful information in this field. 展开更多
关键词 ELECTROCATALYSIS PHOTOCATALYSIS Oxygen reduction reactions Nitrogen reduction reactions Carbon dioxide reduction reactions Fuel cells Solid oxide electrolysis cells
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Pou4f3 Deficiency Obstructs the Subtype Differentiation of Vestibular Hair Cells
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作者 Qin Zhou Yikang Huang +6 位作者 Wenli Ni Mingchuan Feng Lingjie Wu Chuijin Lai yanping Zhang Wenyan Li yan chen 《Neuroscience Bulletin》 2026年第2期349-368,共20页
Vestibular hair cells(HCs)in the inner ear,crucial for balance and spatial orientation,are classified into type I and type II subtypes,but the mechanisms regulating their differentiation remain unclear.In this study,w... Vestibular hair cells(HCs)in the inner ear,crucial for balance and spatial orientation,are classified into type I and type II subtypes,but the mechanisms regulating their differentiation remain unclear.In this study,we examined the role of Pou4f3,an important transcription factor,in vestibular HC differentiation using Pou4f3^(DTR/DTR)(deficient)and Pou4f3CreER/CreER(knockout)mouse models.In Pou4f3-deficient mice,the HC number decreased,and immature HCs failed to develop type I characteristics,indicating a developmental arrest.While type II HCs differentiated normally,Pou4f3 deficiency disrupted HC bundle formation and cell polarity.Findings from knockout models further confirmed the essential role of Pou4f3 in vestibular HC subtype specification.This study underscores the critical role of Pou4f3 in determining vestibular HC subtypes and offers insights into potential strategies for restoring vestibular function through HC regeneration. 展开更多
关键词 Inner ear Development Vestibular system Auditory system Pou4f3 Hair cell Cell subtype Cell differentiation
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基于云平台的能源电力企业智能化运维决策支持模型构建
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作者 朱丽娜 刘旭 +2 位作者 聂刚 闫晨 田羲 《自动化与仪器仪表》 2026年第1期44-49,共6页
由于电力设备迭代周期长,不同时期部署的监测终端分别遵循不同的标准,在协议帧结构、通信规约和数据编码方式存在本质性差异,导致多源异构监测数据存在协议不兼容与时序不同步问题。因此,设计基于云平台的能源电力企业智能化运维决策支... 由于电力设备迭代周期长,不同时期部署的监测终端分别遵循不同的标准,在协议帧结构、通信规约和数据编码方式存在本质性差异,导致多源异构监测数据存在协议不兼容与时序不同步问题。因此,设计基于云平台的能源电力企业智能化运维决策支持模型。通过奇异值分解技术构建信号提纯层,利用Hankel矩阵和奇异值差分谱实现设备信号的精准重构,再结合卷积神经网络进行故障特征提取与分类,形成端到端故障诊断流程。基于阿里云ECS云服务器构建包含TCP服务器、故障诊断程序、Web服务器和MySQL数据库的松耦合系统架构。该架构通过TCP服务器的协议适配层实现多源异构协议的统一解析转换,配合MySQL数据库的标准化存储和Django的时序对齐处理,解决电力监测终端的协议不兼容与时序不同步问题。采用线程池技术处理并发访问,通过Django框架实现Web服务,最终构建智能化运维平台。实验测试结果表明,在工业噪声与强背景噪声环境下,设计模型的动态适应指数稳定在0.05~0.1,泛化误差控制在0.02~0.05,并发处理准确率保持在0.82~0.84。 展开更多
关键词 云平台 SVD CNN 能源电力企业 运维决策支持 故障诊断程序
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Targeting Phospholipid Metabolism as an Effective Hearing Protection Strategy
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作者 Huanyu Mao Wenli Ni +6 位作者 Lupeng Ma Xiang Li yanping Zhang Yuzheng Zhao Wenyan Li Huawei Li yan chen 《Neuroscience Bulletin》 2026年第1期1-18,共18页
Cochlear hair cell(HC)damage is a primary cause of sensorineural hearing loss.In this study,we performed metabolomic profiling of cochlear sensory epithelium following neomycin-induced HC injury and identified elevate... Cochlear hair cell(HC)damage is a primary cause of sensorineural hearing loss.In this study,we performed metabolomic profiling of cochlear sensory epithelium following neomycin-induced HC injury and identified elevated arginine metabolism as a key metabolic characteristic of damaged HCs.Using a highly sensitive and specific biosensor,we confirmed that injury induced an increase in arginine levels within cochlear HCs.By manipulating the levels of arginine and its downstream metabolites,we discovered that unmetabolized arginine exerts a strong protective effect on cochlear HCs,independent of its downstream metabolites,such as nitric oxide.Furthermore,integrated metabolomic and transcriptomic analyses revealed that arginine plays a critical role in reprogramming phospholipid metabolism.Arginine supplementation enhanced membrane phospholipid saturation through the Lands cycle and de novo lipogenesis,and protected HCs from phospholipid peroxidation-induced membrane damage and subsequent cell death.Notably,arginine supplementation protected hearing from both noise-and aminoglycoside-induced injury in mice.These findings underscore the role of unmetabolized arginine in modulating phospholipid metabolism and preventing membrane damage in cochlear HCs,highlighting that targeting phospholipid metabolism is an effective hearing protection strategy. 展开更多
关键词 Sensorineural hearing loss Hair cell Membrane lipid bilayer Oxidative stress Phospholipid remodeling
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Hypervelocity impact response and protection for the track steels of rocket sled system via light-gas gun experiments
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作者 Siwei Zhao Yi Zeng +5 位作者 Xuewen Zhou Weixing Zhao Botao Xie Jianbin Jing yan chen Yilun Liu 《Defence Technology(防务技术)》 2026年第2期282-293,共12页
Hypervelocity rocket sled systems are critical for testing advanced military technologies,yet track damage at speeds exceeding Mach 5 remains a significant challenge for system reliability and performance.In this stud... Hypervelocity rocket sled systems are critical for testing advanced military technologies,yet track damage at speeds exceeding Mach 5 remains a significant challenge for system reliability and performance.In this study,we investigated the hypervelocity impact response and protection for highstrength U71 Mn or bainitic steel used in rocket sled tracks.Flyer plate impact experiments using a two-stage light-gas gun were conducted to study the hypervelocity collision response,followed by the microstructural characterization via optical microscope,scanning electron microscopy equipped with electron backscatter diffraction to reveal underlying damage mechanisms.Then,the calibrated thermalmechanical coupled finite element simulations using the Johnson-Cook constitutive model and MieGrüneisen equation of state were carried out.Results indicated that bainitic steel exhibits superior impact resistance with predominantly smooth scratch-dominated damage due to its higher ductility.In contrast,U71 Mn suffered significant material spallation and crack propagation arising from brittle fracture mechanisms.Zinc-rich epoxy primer coatings effectively mitigated stress concentration and temperature rise in the substrate at impacting velocities below 2.4 km/s,so as to suppress the microstructural damage such as adiabatic shear bands and dynamic recrystallization.However,coating protection diminished at ultra-high-speed impacts due to the coating failure.Dimensional analysis established quantitative relationships of the gouge damage size to projectile mass,impact velocity,and material yield strength.This study provides in-depth insights into damage mechanisms in hypervelocity rail systems,demonstrating that bainitic steel combined with protective coatings can significantly enhance impact resistance and system reliability,offering valuable guidance for the design and optimization of hypervelocity testing platforms. 展开更多
关键词 Hypervelocity rocket sled Gouge of the track steels Two-stage light-gas gun Microstructural characterization Coating protection
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The Study on the Effect of Huoxue Tongmai Capsules Combined with Edaravone Right Camphor on Serum Inflammatory Factors and Its Clinical Efficacy in Patients with Acute Cerebral Infarction 被引量:3
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作者 Yaojie Cai yan chen Yuping He 《Journal of Biosciences and Medicines》 2025年第2期148-157,共10页
Objective: To explore the therapeutic effect of Huoxue Tongmai capsule combined with edaravone right camphor on patients with acute cerebral infarction (Acute Cerebral Infarction) and the effect of combination therapy... Objective: To explore the therapeutic effect of Huoxue Tongmai capsule combined with edaravone right camphor on patients with acute cerebral infarction (Acute Cerebral Infarction) and the effect of combination therapy on serum inflammatory factors. Methods: In this study, 90 patients with acute cerebral infarction hospitalized in Zhuji People’s Hospital from December 2023 to December 2024 were selected and divided into two groups of 45 patients in each group. The control group used standard medical treatment, and the treatment group compared the changes of serum inflammatory factors IL-CRP, TNF-α, and Hcy with Huoxue Tongmai capsule for 7 days, 14 days and 30 days, and discussed the changes of the modified Rankin scale score (mRS) and National Institutes of Health Stroke Scale (NIHSS) score. Results: At 7 days, 14 days, and 30 days of treatment, the NIHSS score, mRS score, hs-CRP, IL-6, TNF-α, and Hcy levels were statistically significant (P α, and Hcy levels in the treatment group were significantly lower than those in the control group (P Conclusion: Patients with acute cerebral infarction received Huoxue Tongmai capsule combined with edaravone right camphor, which can reduce the inflammatory reaction, improve the nerve function and improve the prognosis. 展开更多
关键词 Acute Cerebral Infarction Huoxue Tongmai Capsule Edaravone Right Camphor Inflammatory Factors Nerve Function
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具身智能安全治理 被引量:8
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作者 徐文渊 冀晓宇 +1 位作者 闫琛 程雨诗 《中国科学院院刊》 北大核心 2025年第3期429-439,共11页
具身智能(EAI)作为下一个人工智能浪潮的重要方向,正逐步渗透到日常生活、工业生产、医疗健康乃至国防安全等领域。然而,组成具身智能复杂系统的硬件、软件、算法等都存在脆弱性,若被恶意攻击者利用,会对个人安全、社会安全甚至国家安... 具身智能(EAI)作为下一个人工智能浪潮的重要方向,正逐步渗透到日常生活、工业生产、医疗健康乃至国防安全等领域。然而,组成具身智能复杂系统的硬件、软件、算法等都存在脆弱性,若被恶意攻击者利用,会对个人安全、社会安全甚至国家安全构成严重威胁。在此背景下,文章从具身智能信息域、物理域、社会域视角出发,围绕其本体安全、交互安全和应用安全3个层面,探讨具身智能的安全内涵与安全体系。同时,针对具身智能安全风险防范,文章提出具身智能的安全防护体系和综合治理措施,以期为具身智能的安全治理提供科学指导。 展开更多
关键词 具身智能 安全防护 安全治理
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引入人工智能技术赋能工作场景的课程教学改革与实践--以《药品应用技术》为例 被引量:1
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作者 闫晨 张琦 +3 位作者 李璐 魏艳萍 傅红 刘亚男 《兰州石化职业技术大学学报》 2025年第2期80-84,共5页
人工智能的发展正在推动中医药专业领域的转型与升级。培养复合型的,应用型的并具有数字素养的,能够适应人工智能技术赋能岗位工作情景的医药专业领域高素质技能型人才是职业教育肩负的重任。因此,探索人工智能与《药品应用技术》课程... 人工智能的发展正在推动中医药专业领域的转型与升级。培养复合型的,应用型的并具有数字素养的,能够适应人工智能技术赋能岗位工作情景的医药专业领域高素质技能型人才是职业教育肩负的重任。因此,探索人工智能与《药品应用技术》课程交叉融合的新形态课程建设。课程通过模块优化搭建人工智能融入载体,学生校内外实习实训打通人工智能工作场景实践路径等方式,强化以产教融合为特征的课程改革。通过实践,提升了学生适应医药产业数字化转型所需的岗位核心能力,实现了学生的全面发展。引入人工智能技术赋能工作场景的《药品应用技术》课程教学改革与实践,为职业院校同类课程建设与改革提供了新模式。 展开更多
关键词 人工智能 药品应用技术 中医药专业 教学改革
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肺腺癌中PTEN和6KDMB的表达与临床病理特征的关系 被引量:1
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作者 刘莹 徐小艳 +3 位作者 闫琛 刘佩萸 余江涛 姜黄 《西部医学》 2025年第1期21-25,共5页
目的观察PTEN和6KDMB在肺浸润性腺癌中的表达,分析两者与多个临床病理参数的关系及相关性,加深对肺腺癌发病机制的认识。方法利用生物信息学分析手段评估PTEN和6KDMB mRNA在肺腺癌及正常肺组织中的表达情况。用免疫组织化学SP法检测74... 目的观察PTEN和6KDMB在肺浸润性腺癌中的表达,分析两者与多个临床病理参数的关系及相关性,加深对肺腺癌发病机制的认识。方法利用生物信息学分析手段评估PTEN和6KDMB mRNA在肺腺癌及正常肺组织中的表达情况。用免疫组织化学SP法检测74例肺浸润性腺癌组织及相应的正常肺组织中PTEN和6KDMB蛋白的表达情况,分析其与肺浸润性腺癌多个临床病理参数的关系,用Spearman法分析两者的相关性。结果PTEN和6KDMB mRNA在肺浸润性腺癌组织中的表达水平均较正常肺组织下调;59例配对肺腺癌及正常肺组织分析结果显示6KDMB mRNA在肺腺癌组织中表达水平较正常肺组织下调(P<0.05)。免疫组化结果显示浸润性肺腺癌中PTEN蛋白表达率(33.78%,25/74)显著低于正常肺组织(54.05%,40/74),6KDMB蛋白的表达率(72.97%,54/74)显著高于正常肺组织(21.62%,16/74)(P<0.05)。在74例浸润性肺腺癌中,PTEN在高分化、无气道播撒及TNM分期Ⅰ+Ⅱ表达率较高(均P<0.05)。6KDMB在淋巴结有转移和TNM分期Ⅲ+Ⅳ表达率较高(P<0.05)。74例肺浸润性腺癌中PTEN表达越低,6KDMB的表达越高,Spearman相关分析结果显示两者呈显著负相关(R_(s)=0.53,P<0.001)。结论肺浸润性腺癌中PTEN和6KDMB蛋白与侵袭和转移相关,两者呈显著负相关性,对PTEN和6KDMB在肺浸润性腺癌中的表达规律及相关性的研究,将为分子生物机制进一步研究提供一定的理论依据。 展开更多
关键词 浸润性肺腺癌 PTEN 6KDMB 临床病理特征 相关性
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生育政策调整对东北地区超低生育水平的影响
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作者 孙晓霞 阎宸 于潇 《人口学刊》 北大核心 2025年第6期99-112,共14页
生育行为具有社会嵌入性,生育政策作为社会环境因素之一,其变动会直接作用于个体与家庭的生育决策,进而影响区域乃至全国的生育水平。东北地区作为中国典型的老工业基地,当前正面临着超低生育率与人口负增长的双重挑战,人口结构问题已... 生育行为具有社会嵌入性,生育政策作为社会环境因素之一,其变动会直接作用于个体与家庭的生育决策,进而影响区域乃至全国的生育水平。东北地区作为中国典型的老工业基地,当前正面临着超低生育率与人口负增长的双重挑战,人口结构问题已成为制约区域振兴的瓶颈。评估生育政策调整对东北地区超低生育水平的影响不仅是破解区域人口困局、以人口高质量发展支撑东北全面振兴的现实需求,也能为全国其他地区应对人口转型挑战提供可借鉴的经验。基于此,本研究借助2010—2022年中国家庭追踪调查(CFPS)数据,以“全面两孩”政策为研究对象,运用双重差分法(DID),从生育意愿与生育行为两个维度构建政策效应评估模型,分析生育政策调整对东北地区超低生育水平的影响。研究发现生育政策调整对东北地区育龄家庭的生育行为和生育意愿均产生显著正向效应,不仅提升了生育意愿,而且同步增加了实际生育行为。生育政策调整产生的效果存在明显的群体与地域差异,在群体层面,城市家庭和男性群体的政策效应高于农村家庭与女性群体;在地域层面,东北地区的政策效应则明显低于全国平均水平。经济增长放缓导致生育成本承压、现代少生优育观念固化、适育人口外流缩减生育基数是制约政策效应充分释放的主要因素;而城乡育儿资源分布不均、生育成本性别分担失衡加剧了群体间的效应差异。不同于现有研究多聚焦单一理论或单一政策,本研究将成本-效用、制度规范、文化建构三重理论与政策演进阶段相匹配,结合东北地区单位制解体、成本转移、文化固化的逻辑链条,剖析生育意愿与生育行为的政策效应。结论表明单纯放宽生育数量限制无法摆脱超低生育困境。东北地区应健全生育支持政策体系,构建梯度化生育成本分担机制;打造生育友好型社会,优化女性就业环境以平衡职业与生育责任;加强生育政策宣传引导,融通传统与现代婚育理念;优化人口发展的社会经济环境,通过产业振兴吸引适育人口回流,打破低生育与人口外流的恶性循环,释放东北地区生育潜力,推动人口与经济社会协调可持续发展。 展开更多
关键词 东北地区 生育政策调整 超低生育水平 生育意愿 生育行为
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压缩机滑片动力学建模及接触碰撞研究
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作者 韦为 闫琛 +1 位作者 石冬宇 雷悦 《机械设计与制造》 北大核心 2025年第5期85-88,94,共5页
滚动活塞压缩机在变频情况下滑片有时会与滚动活塞脱离,即滑片脱空。脱空后滑片与滚动活塞发生碰撞,碰撞造成压缩机振动并产生噪声。文章基于滑片受力建立滑片动力学模型,推导得出滑片与滚动活塞接触力解析式,分析不同因素对滑片与滚动... 滚动活塞压缩机在变频情况下滑片有时会与滚动活塞脱离,即滑片脱空。脱空后滑片与滚动活塞发生碰撞,碰撞造成压缩机振动并产生噪声。文章基于滑片受力建立滑片动力学模型,推导得出滑片与滚动活塞接触力解析式,分析不同因素对滑片与滚动活塞接触力的影响,并使用碰撞恢复系数研究碰撞的运动学特性。结果表明:接触力受多种因素的影响,其中两腔气体压差和偏心距对滑片-滚动活塞接触力影响显著;转子转速和滑片与滚动活塞的摩擦系数对滑片-滚动活塞接触力影响不显著;碰撞恢复系数越大,碰撞次数越多,碰撞程度越剧烈。 展开更多
关键词 滚动活塞压缩机 滑片 动力学模型 接触力 接触力影响因素 碰撞恢复系数
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Health status of transitional resettlement sites after the earthquake in Mianyang city of Sichuan province
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作者 Ying-Hua Li Ling Qian +12 位作者 Xue-Qiong Nie Li LI Xian-Peng Meng Jin-Bin Zhang Li Tong Li Xiao He Xing Chang-Sheng Huang Tao Hu yan Ning yan chen Yu Ma Mao-Xuan Tao 《Health》 2009年第4期298-303,共6页
Objective: To understand the health status of transitional resettlement sites and the needs of residents on health education, and to pro-vide basis for conducting health education after ear- thquakes and other public ... Objective: To understand the health status of transitional resettlement sites and the needs of residents on health education, and to pro-vide basis for conducting health education after ear- thquakes and other public emergen-cies. Method: From May 31 to June 2, 2008 (19 to 21 days after the earthquake), field obser-vation, questionnaire survey, and structured interviews were conducted in five transitional resettlement sites. Information on health status, health service, health education, and residents’ needs on health education was col-lected. Results: 430 questionnaires were dis-tributed and 424 valid completed ones were returned. Food and water were adequately supplied. Clinics for health assistance were established and environment disinfecting was conducted regularly by public health profes-sionals. Health education was available to residents. The large proportion (98.6%, 97.9%, 88.7%, and 93.2% respectively) of the residents acknowledged that water supply, food supply, lavatories, and health service were adequate to fulfill basic needs. The overall disease in-cidence of surveyed residents was 44.8%, and diarrhea and fever with respiratory symptoms were the most common diseases. Among residents’ needs on disease prevention knowl-edge and skills, basic knowledge of infectious diseases was most desirable (49.8%), and safety knowledge of water uses was secon-darily most desirable (36.8%). The most fa-vored approach of obtaining knowledge was watching television. Conclusions: In the pe-riod of 20 days after the earthquake, Living security, health facilities, and health care ser-vice could satisfy residents’ basic needs. Post-disaster health education should con-centrate on basic knowledge and skills of communicable diseases and health- risky be-havior. Timely distributing disease prevention materials could be effective. 展开更多
关键词 EARTHQUAKE DISASTER Areas HEALTH STATUS HEALTH EDUCATION Needs
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2024年某院治疗心脑血管疾病的中成药使用情况分析
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作者 闫晨 张科 马妍 《中国医院用药评价与分析》 2025年第9期1132-1134,1138,共4页
目的:了解天津市医科大学总医院空港医院(以下简称“该院”)使用中成药治疗心脑血管疾病的情况,为合理用药提供参考。方法:基于该院用药信息网数据,采取回顾性分析方法,围绕2024年该院中成药销售的品种、金额、用药频度、限定日费用(DDC... 目的:了解天津市医科大学总医院空港医院(以下简称“该院”)使用中成药治疗心脑血管疾病的情况,为合理用药提供参考。方法:基于该院用药信息网数据,采取回顾性分析方法,围绕2024年该院中成药销售的品种、金额、用药频度、限定日费用(DDC)等维度进行分析,根据疾病辨证特点阐明心脑血管疾病与剂型之间的相关性;抽取2024年该院门诊单独使用中成药和中西药联合应用治疗心脑血管疾病的处方9954张进行用药合理性分析,提出不合理处方中的问题并进行梳理。结果:2024年,该院共有23种中成药应用于心脑血管疾病的治疗,其中脉血康胶囊的销售金额最高,蒲参胶囊的DDC最高,血栓心脉宁片的DDC最低。21种中成药口服制剂按照功效主治可分为10类,涉及的主要剂型为胶囊剂、片剂、颗粒剂,与心脑血管疾病病程长、需要长期用药的发病特征基本一致。抽取的9954张处方中,不合理处方占3.91%(389张),导致处方不合理的主要原因为用法用量不当、用药与诊断不符。结论:2024年该院使用中成药治疗心脑血管疾病的情况基本合理,但仍要重点关注不合理处方中存在的问题,提高合理用药水平。 展开更多
关键词 中成药 心脑血管疾病 合理用药
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