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High-altitude effect on corneal endothelial cells and prognosis in patients with cataract surgeries:a propensity score matched analysis

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International Journal of Ophthalmology(English edition) 2025年第3期18卷 409-414页

作者： Li-Li Zhu Bing-Xue Zhu yue Han yong-Yan Tang Ying-Ying Wen Xu-Hong Zhang Li-yue Zhang Ri-Lei Zhu Dong-Yu Guo Department of Ophthalmology First Affiliated Hospital of Zhejiang UniversityHangzhou 310000Zhejiang ProvinceChina Department of Ophthalmology People’s Hospital of Haixi Autonomous Prefecture of Qinghai ProvinceDelingha 817000Qinghai ProvinceChina

AIM:To compare analysis of the impact of high altitude on corneal endothelial cells,and the prognosis in patients with cataract ***:Totally 265 plateau patients with cataract surgeries performed between January 2019 and July 2022(average altitude=3000 m),and 524 plain patients with cataract surgeries performed between January 2020 and July 2022 were *** propensity score matching(PSM)method was applied to match the basic information of patients in both regions on a 1:1 *** endothelial cell density(ECD),coefficient of variation(CV),hexagonal cell ratio(HEX),duration of surgery,and pre-and postoperative visual acuity(VA)were compared retrospectively,and correlation tests were ***:Totally 223 pairs have been matched *** HEX in the plateau group was higher than that in the plain group(61.95%±6.191%vs 44.91%±6.829%,P0.1).The pre-and postoperative VA of patients with cataract surgeries in the plateau group were lower(1.40±0.610 vs 0.71±0.514,P0.05),while the post-operative VA was significantly related to the pre-operative VA and the duration of surgery(P<0.05).CONCLUSION:The relative hypoxic environment of the plateau does not promote the apoptosis of corneal endothelial cells,but may lead to the compensatory increase of their *** plateau patients,no significant associations are found between the poor VA and the corneal endothelial functions early after cataract surgeries.

关键词： cataract surgery corneal endothelial cells hypoxia plateau propensity score matching

VITM:一个新的金星电离层-热层理论模式

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地球物理学报 2025年第1期68卷 36-44页

作者：任志鹏刘耘博乐新安魏勇中国科学院地质与地球物理研究所中国科学院地球与行星物理重点实验室北京100029 中国科学院大学地球与行星科学学院北京100049 北京空间环境国家野外科学观测研究站北京100029

为支撑国内的行星电离层热层模拟研究,本文介绍了在已有的地球电离层-高层大气耦合模式GCITEM-IGGCAS基础上新开发的金星高层大气-电离层耦合模式VITM (Venus Ionosphere-Thermosphere Model).该模式在水平方向采用了地理坐标系,纬度-... 详细信息

为支撑国内的行星电离层热层模拟研究,本文介绍了在已有的地球电离层-高层大气耦合模式GCITEM-IGGCAS基础上新开发的金星高层大气-电离层耦合模式VITM (Venus Ionosphere-Thermosphere Model).该模式在水平方向采用了地理坐标系,纬度-经度分辨率为5°×7.5°,垂直方向采用高度坐标,把94~200 km的金星高层大气分为38个等高面.该模式能够模拟金星热层4种主要中性化学成分(CO_(2)、CO、O和N_(2))、6种次要中性化学成分(Ar、He、O_(2)、NO、N(4S)和N(2D))、电离层离子(CO_(2)^(+)、CO^(+)、O_(2)^(+)、O^(+)、N_(2)^(+)和NO^(+))和电子的数密度,以及中性温度和中性风的三维时空分布.本文给出了一个模拟实例,模拟结果较好地再现了金星热层和电离层的主要特征.

关键词：金星电离层热层模式

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Recent Advances in Fibrous Materials for Hydroelectricity Generation

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Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge Duo Xu Xiao Feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao yong Du Zhe Sun Weilin Xu Jian fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

Mediating role of health literacy in the relationship between social isolation and psychological distress among pre-frail older adults

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World Journal of Psychiatry 2025年第1期15卷 137-144页

作者： Juan fang Li-Hui Li Ming-Qian He yue Ji Dong-Yan Lu Li-Bing Zhang Jin-Lan Yao School of Medicine Huzhou UniversityHuzhou 313000Zhejiang ProvinceChina

BACKGROUND Frailty has become a significant public health *** recent increase in the number of frail older adults has led to increased attention being paid to psycho-logical care services in *** social isolation of pre-frail older adults can impact their psychological *** To explore the mediating effect of health literacy between social isolation and psychological distress among communitydwelling older adults with *** This descriptive cross-sectional study was conducted with 254 pre-frail older individuals aged 60 years and *** isolation,health literacy,and psycholo-gical distress were comprehensively measured using the Lubben Social Network Scale-6,12-item Short-Form Health Literacy Questionnaire,and the Kessler Psy-chological Distress *** were evaluated using the SPSS 27.0 package program and the PROCESS macro *** statistical analyses,correlation analyses,and bootstrap mediation tests were used to assess associations between the *** The results showed that social isolation had an effect on health literacy among pre-frail older adults(β=0.240,P<0.001),social isolation impact on psycho-logical distress pre-frail older adults(β=-0.415,P<0.001);health literacy was identified effect on psychological distress among pre-frail older persons(β=-0.307,P<0.001).Health literacy partially mediated the relationship between social isolation and psychological distress among community-dwelling older adults with pre-frailty,with a mediation effect of-0.074,accounting for 17.83%of the total effect.

关键词： Frail Ageing Psychological distress Health literacy Social isolation

Landscape Pattern and Dynamic Change of Fractional Vegetation Cover in a Typical County in an Arid Region

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Huanjing Kexue/Environmental Science 2025年第3期46卷 1645-1656页

作者： Huang, Jin-Yi Sun, Qian Huang, yong-Gang Song, Ting-Wei Hu, Xin-yue Zhang, Zhao-Xiang College of Forestry and Landscape Architecture Xinjiang Agricultural University Urumqi830052 China

The dynamic change in fractional vegetation cover(FVC)in arid areas is an important basis for the development and evolution of desertification as well as critical component land desertification control. Using Hebukeser(also known as Hefeng),a typical arid zone county,as the study area,we analyzed the changes in the ecological landscape pattern of vegetation with different coverages;investigated the dynamic changes of landscapes with different FVC from the perspectives of change frequency statistics,geocoding method,and migration of the center;and elaborated on the dynamic shift of various types of landscapes and the rule of migration of the center. The finding showed that:Over the course of the 20-year period,the county ' s average FVC increased from 18.00%-20.39%. Notable differences were observed in the county ' s spatial distribution,with low FVC predominating and very high and high FVC primarily distributed in the northern and central villages. The area with four changes in vegetation cover accounted for 71.98% of the total area,primarily representing the distribution area of the very high FVC,and the area with no change accounted for just 0.08%. The proportion of stable and fluctuating area was the same,39.60% and 42.54%,respectively;the conversion between different types of FVC was frequent,with"very low → low,""low → very low,"and"low → medium"conversion types. The center of medium,high,and very high FVC was distributed in the north,indicating that the vegetation in the north was growing well and that ecological projects like restoring pasture to grassland had yielded excellent results. The distribution of landscape patches with very low and low FVC was more compact and stable,while the diversity of the overall landscape pattern remained stable and unchanged,with the Evenness Index increasing from 0.17-0.19. The degree of fragmentation between various types of FVC was low,and the distribution was more centralized. During the past 20 years,the FVC in Hefeng ha

关键词： Miocene

碱-酶水解结合分散式固相萃取提高大豆异黄酮活性总量测定的准确性

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分析测试学报 2025年第1期44卷 106-115页

作者：顾文黎晨曼孙震庞月红冯永巍沈晓芳江南大学食品科学与资源挖掘全国重点实验室江苏无锡214122 无锡市食品安全检验检测中心国家市场监管技术创新中心(特殊食品)江苏无锡214142

通过碱性甲醇溶液超声提取,结合杏仁来源β-葡萄糖苷酶水解及聚酰胺分散式固相萃取步骤,建立了超高效液相色谱测定大豆异黄酮活性总量的方法。样品中的丙二酰及乙酰类大豆异黄酮苷在碱性条件下水解成基本型苷,并在β-葡萄糖苷酶的作用... 详细信息

通过碱性甲醇溶液超声提取,结合杏仁来源β-葡萄糖苷酶水解及聚酰胺分散式固相萃取步骤,建立了超高效液相色谱测定大豆异黄酮活性总量的方法。样品中的丙二酰及乙酰类大豆异黄酮苷在碱性条件下水解成基本型苷,并在β-葡萄糖苷酶的作用下进一步脱去糖基转变为相应的苷元。样品中12种不同形式的大豆异黄酮转变为仅含3种大豆异黄酮苷元(大豆苷元、黄豆黄素、染料木素)后,以聚酰胺粉进行分散式固相萃取,C_(18)反相色谱柱(2.1 mm i.d.×50 mm,1.8μm)分离。结果显示,大豆苷元、黄豆黄素及染料木素在3 min内实现基线分离,3种异黄酮苷元的标准曲线相关系数(r^(2))均大于0.999,总异黄酮的回收率为94.3%~102%,相对标准偏差(RSD,n=6)小于5.0%,具有较高的准确度和精密度。该方法通过检测样品中的全部苷元来计算异黄酮总量,有助于降低异黄酮检测在分离度、准确度及检测成本上带来的挑战;考虑异黄酮在体内的转化吸收机制和生理效应,以苷元总量计能更科学地反映实际的异黄酮活性水平,避免因通过苷和苷元的简单加和而造成对异黄酮含量水平的高估。

关键词：大豆异黄酮聚酰胺(PA) 分散式固相萃取(d-SPE) β-葡萄糖苷酶超高效液相色谱(UPLC)

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双壁波纹钢管混凝土构件短柱轴压力学性能

哈尔滨工业大学学报 2025年第1期57卷 56-64页

作者：路博崔燕方勇王玉银李豪哈尔滨工业大学土木工程学院哈尔滨150090 结构工程灾变与控制教育部重点实验室(哈尔滨工业大学) 哈尔滨150090 深圳市市政设计研究院有限公司广东深圳518029

为改善空心钢筋混凝土柱(HRC)的使用与受力性能,提出一种双壁波纹钢管混凝土(CFDCST)构件。本文共进行了4个大尺寸双壁波纹钢管混凝土短柱与2个空心钢筋混凝土短柱的轴压试验,关键试验参数为试件类型与波纹钢管类型。分析构件的破坏模式... 详细信息

为改善空心钢筋混凝土柱(HRC)的使用与受力性能,提出一种双壁波纹钢管混凝土(CFDCST)构件。本文共进行了4个大尺寸双壁波纹钢管混凝土短柱与2个空心钢筋混凝土短柱的轴压试验,关键试验参数为试件类型与波纹钢管类型。分析构件的破坏模式,对比不同参数下构件的承载力、峰值应变、延性系数等关键力学指标,获得荷载-波纹钢管应变关系曲线以揭示试件的约束机理并验证外波纹钢管类型的影响。试验结果表明:外波纹钢管可为夹层混凝土提供约束作用,且螺旋角越小,外波纹钢管的约束作用越强;内波纹钢管则主要为夹层混凝土内壁提供有效支撑,以保持截面的完整性。名义约束效应系数与空心率相近时,由于咬口滑移影响,大螺旋角双壁波纹钢管混凝土比小螺旋角双壁波纹钢管混凝土的峰值应力、峰值应变与延性系数分别降低15.5%、21.8%与16.7%。在总用钢量相近的情况下,小螺旋角双壁波纹钢管混凝土柱的承载力、峰值应变与延性系数分别比空心钢筋混凝土柱提高10.6%、36.2%与50.0%。基于试验结果,检验了3种典型承载力公式的适用性,并提出了相应设计建议。

关键词：组合结构空心钢筋混凝土波纹钢管双壁构件约束机理

强化学习引导的产品变更路径多目标差分进化算法

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控制理论与应用 2025年第1期42卷 109-117页

作者：宋贤芳杨扬张勇郑瑞钊中国矿业大学信息与控制工程学院江苏徐州221116

由于零部件之间复杂的关联关系,产品设计变更效应的传播在所难免.为降低产品设计变更带来的风险,以变更对产品综合性能影响、变更经济成本和变更工期作为优化目标,本文提出了一种强化学习引导的产品变更路径多目标差分进化算法.首先,建... 详细信息

由于零部件之间复杂的关联关系,产品设计变更效应的传播在所难免.为降低产品设计变更带来的风险,以变更对产品综合性能影响、变更经济成本和变更工期作为优化目标,本文提出了一种强化学习引导的产品变更路径多目标差分进化算法.首先,建立问题的复杂产品网络模型,揭示产品零件变更的传播机制;接着,引入变更传播强度,间接评价零件变更对产品综合性能的影响;同时,考虑变更经济成本和变更工期指标,建立产品设计变更传播路径的多目标优化模型;进一步,利用双深度Q-网络帮助种群在不同阶段选择适合的进化策略,提出一种强化学习引导的差分进化算法,简称为DDQN-DE,并通过上述算法求解最佳的产品设计变更传播路径.最后,以创维公司某型号电视机的设计变更问题为例,并与已有算法进行对比,实验验证了所提算法的有效性.

关键词：多目标优化设计变更差分进化强化学习

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赋权组合模型溯源山楂产地的高光谱方法

光谱学与光谱分析 2025年第2期45卷 584-590页

作者：方澳殷勇于慧春袁云霞河南科技大学食品与生物工程学院河南洛阳471023

不同产地的山楂因生长环境和地理气候的差异,导致其品质的参差不齐,因此确定山楂的地理产区具有重要的意义。为了提高山楂产地溯源模型的稳定性和准确性,提出了一种基于误差倒数赋权的组合鉴别模型。首先,利用高光谱成像技术采集了456... 详细信息

不同产地的山楂因生长环境和地理气候的差异,导致其品质的参差不齐,因此确定山楂的地理产区具有重要的意义。为了提高山楂产地溯源模型的稳定性和准确性,提出了一种基于误差倒数赋权的组合鉴别模型。首先,利用高光谱成像技术采集了456个山楂的高光谱信息,通过对比卷积平滑(SG)、多元散射校正(MSC)和标准正态变量(SNV)3种预处理方法,并使用预处理后的数据和原始数据构建BP神经网络(BPNN)和随机森林(RF)模型,根据其准确率确定了SNV为平均光谱值的预处理方法。然后,对山楂的高光谱图像进行主成分分析,选取第1主成分图像并根据全波段下的权重系数筛选出6个特征波长,对应的平均光谱值作为其光谱信息表征值。其次,分别提取第1主成分图像和特征波长对应灰度图像的纹理特征,并将特征波长的光谱表征值与其对应图像的纹理表征值、主成分图像纹理表征值进行组合以构造产地溯源鉴别模型的输入向量。最后,分别选择BP神经网络(BPNN)、随机森林(RF)和赋权组合模型(BPNN-RF)3种方法进行鉴别模型构建,并选取准确率(Acc)和宏F1分数(macroF1)2个评价指标对不同输入向量所构建的山楂产地鉴别模型进行评价分析。结果表明,相同输入向量所建BPNN-RF模型的准确率和宏F1分数大都优于BPNN模型和RF模型的准确率和宏F1分数,其中采用3种表征值组合而成的输入向量,其所建BPNN-RF模型实测集的准确率由89.01%提高到98.90%,宏F1分数也由89.32%提高到98.95%,说明了基于误差倒数赋权BPNN-RF组合模型对山楂产地的鉴别能力最强,效果最好,优于单一的鉴别模型。该研究为不依赖理化分析、仅靠高光谱信息即可实现山楂产地的溯源提供了一种方法支撑。

关键词：山楂产地溯源高光谱误差倒数赋权赋权组合模型