检索结果-南通市图书馆

“纹”以载道——20世纪三四十年代常书鸿的装饰艺术思想与油画民族化探索

在线全文

学校读者我要写书评

暂无评论

美术 2024年第2期 76-87页

作者：杨洋上海大学上海美术学院

装饰艺术与油画语言的碰撞融合是20世纪西学东渐思潮在中国美术领域的独特映射,也是探寻民族美术变革与油画民族风格的切入点。本文主要围绕常书鸿20世纪三四十年代的油画创作,探寻其装饰艺术思想的渊源、油画创作中的装饰景观及形式语... 详细信息

装饰艺术与油画语言的碰撞融合是20世纪西学东渐思潮在中国美术领域的独特映射,也是探寻民族美术变革与油画民族风格的切入点。本文主要围绕常书鸿20世纪三四十年代的油画创作,探寻其装饰艺术思想的渊源、油画创作中的装饰景观及形式语言,并在此基础上揭示其油画装饰语言与民族精神之间的复杂关系。希望为多维立体地理解“敦煌守护神”常书鸿在特定时期的油画民族化探索与艺术实践,以及其创作与世界美术汇流的特殊意义。

关键词：常书鸿装饰艺术油画民族化敦煌壁画

Inorganic surface passivation strategies of metal halide perovskites

在线全文

学校读者我要写书评

暂无评论

Information ＆ Functional Materials 2024年第2期1卷 207-219页

作者： yang Gui Jiahui Shen Yuxuan Zhou Rui Wang yang yang Jingjing Xue State Key Laboratory of Silicon and Advanced Semiconductor Materials and School of Materials Science and Engineering Zhejiang UniversityHangzhouChina School of Engineering Westlake University and Institute of Advanced TechnologyWestlake Institute for Advanced StudyHangzhouChina Department of Materials Science and Engineering and California NanoSystems Institute University of California Los AngelesLos AngelesCaliforniaUSA

Metal halide perovskites have demonstrated considerable promise across various optoelectronic *** passivation serves as a pivotal strategy to obtain high‐quality perovskite materials,either in a manner of bulk thin film or nanocrystal,with superior optoelectronic properties and *** current research focus in this regard primarily revolves around the use of organic molecules to passivate the surface of ***,organic passivation molecules always suffer from chemical instability and weak sec-ondary bonding modes,resulting in an unstable surface passivation *** materials,possessing more stable chemical structures and stronger chemical bonding than their organic counterparts,offer the opportunities to construct more robust passivation for the perovskite ***,in this review,we summarized and assessed recent advancements in inorganic sur-face passivation strategies for perovskite materials and devices,ranging from nanocrystals to bulk *** discussing the mechanisms behind various inorganic passivation strategies,we aim to offer mechanistic insights and guidelines for future developments of more targeted surface passivation ap-proaches tailored for perovskite materials and devices.

关键词： inorganic passivation perovskite photovoltaics surface passivation

Maillard reaction affecting immunobinding activity and digestibility of tropomyosin in Alectryonella plicatula food matrix

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2024年第5期13卷 2959-2969页

作者： Chenchen Yu Xinrong He Nairu Ji Shuai Kang Dongxiao Li Huilin Zhang yang yang Dong Lai Qingmei Liu Guangming Liu College of Ocean Food and Biological Engineering Xiamen Key Laboratory of Marine Functional FoodFujian Provincial Engineering Technology Research Center of Marine Functional FoodJimei UniversityXiamen 361021China The Second Affiliated Hospital of Xiamen Medical College Xiamen 361021China

In recent years,the allergy rate of oysters has surged,and daily food processing methods make it hard to reduce heat resistance and digestive allergy such as tropomyosin(TM).In this study,the Maillard reaction with xylose significantly reduced the IgE binding capacity of Alectryonella plicatula food matrix(AFM),that reduced by(77.81±2.68)%.The study found the Maillard reaction changes the structure of the AFM,in which the content ofα-helix decreased by(24.64±1.46)%.Structural transformation further explains why the Maillard reaction alters the immunobinding activity of *** addition,the Maillard reaction reduces the digestive stability of the AFM and makes TM in the *** food matrix Maillard reaction products(AFM-MRPs)more easily *** on the above research,10 amino acids on the 7 IgE epitopes of TM were *** result indicates that the Maillard reaction reduces the immunobinding activity of the AFM by changing the structure and modifying the amino acids on the epitope.

关键词： Alectryonella plicatula Food matrix Immunobinding activity Maillard reaction Tropomyosin

重复使用飞行器分布式连接结构振动及疲劳研究

在线全文

学校读者我要写书评

暂无评论

中国机械工程 2024年第1期35卷 45-55页

作者：沈民民史锐郭鹏飞杨旸杨晓东杨继厚北京工业大学材料与制造学部北京100124 中国运载火箭技术研究院北京100076

准确计算重复使用飞行器与发动机之间分布式连接结构的振动特性及疲劳寿命是确保航天运输系统安全运行的前提和基础。以分布式连接结构为研究对象,用实验验证了有限元仿真方法的可行性,从时域和频域探究了分布式连接结构的振动特性,计... 详细信息

准确计算重复使用飞行器与发动机之间分布式连接结构的振动特性及疲劳寿命是确保航天运输系统安全运行的前提和基础。以分布式连接结构为研究对象,用实验验证了有限元仿真方法的可行性,从时域和频域探究了分布式连接结构的振动特性,计算了不同工况下分布式连接结构的疲劳寿命。研究结果表明,连接结构滞回曲线的有限元结果与实验结果吻合较好;在不同激励频率的循环载荷作用下,连接螺栓发生应力增长或应力衰减,出现疲劳效应;分布式连接结构在第1、第5阶固有频率处激发较大的响应;降低激励幅度能够极大延长连接结构疲劳寿命,增大螺栓预紧力也能够延长疲劳寿命,但增大激励频率只能够稍微缩短时间寿命,周期寿命仍在同一量级上;引入热和蠕变影响之后,分布式连接结构最多只能承受5次热循环载荷。

关键词：重复使用飞行器分布式连接结构振动特性疲劳寿命

维普期刊数据库博看期刊

Phase structure evolution and its effect on magnetic and mechanical properties of B-doped Sm_(2)Co_(17)-type magnets with high Fe content

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第9期33卷 582-588页

作者： Yao-Wen Li Zhuang Liu Hai-Chen Wu Fang Wang Chao-Qun Zhu Dong-Liang Tan Yu Liu yang yang Ming-Xiao Zhang Ren-Jie Chen A-Ru Yan Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry ofEducation&School of Chemistry and Materials Science Shanxi Normal UniversityTaiyuan 030032China CISRI&NIMTE Joint Innovation Center for Rare Earth Permanent Magnets Ningbo Institute ofMaterial Technology and EngineeringChinese Academy of SciencesNingbo 315201China University of Chinese Academy of Sciences Beijing 100049China

The unique cellular microstructure of Fe-rich Sm_(2)Co_(17)-type permanent magnets is closely associated with the structure of the solid solution *** investigate the phase structure,magnetic properties,and mechanical behavior of B-doped Sm_(2)Co_(17)-type magnets with high Fe *** doped B atoms can diffuse into the interstitial vacancy,resulting in lattice expansion and promote the homogenization of the phase organizational structure during the solid solution treatment in ***,the resulting second phase plays a dominant role to result in more microtwin structures and highly ordered 2:17R phases in the solid solution stage,which inhibits the ordering transformation of 1:7H phase during aging and affects the generation of the cellular structure,and to result in a decrease in magnetic properties,yet the interface formed between it and the matrix phase hinders the movement of dislocations and enhances the mechanical ***,the precipitation of high flexural strain grain boundary phase induced by B element doping is also a new and effective way to improve the flexural strain of Sm_(2)Co_(17)-type *** study provides a new understanding of the phase structure evolution and its effect on the magnetic and mechanical properties of Sm_(2)Co_(17)-type magnets with high Fe content.

关键词： Sm_(2)Co_(17)-type magnets magnetic and mechanical properties

在线全文

学校读者我要写书评

暂无评论

基于应变统计矩的三管塔损伤识别方法研究

建筑结构学报 2024年第7期45卷 108-119页

作者：阳洋高志豪张旭重庆大学土木工程学院重庆400044 重庆大学溧阳智慧城市研究院江苏溧阳213332

为了预防通信铁塔结构安全事故的发生,并及时预警可能出现的损害,进行通信铁塔结构安全监测工作至关重要。以应变统计矩改变率作为损伤指标,针对三管塔结构进行损伤识别。通过理论推导建立了多自由度结构体系应变响应统计矩与结构刚度... 详细信息

为了预防通信铁塔结构安全事故的发生,并及时预警可能出现的损害,进行通信铁塔结构安全监测工作至关重要。以应变统计矩改变率作为损伤指标,针对三管塔结构进行损伤识别。通过理论推导建立了多自由度结构体系应变响应统计矩与结构刚度之间的关系,并提出应变四阶统计矩改变率损伤指标。通过建立应变四阶统计矩与应变能量密度之间的关系,依据最大应变能量密度原理,优化传感器布设,再通过设置不同信噪比,在风速风向改变的条件下,基于数值模型验证方法的有效性,并与其他损伤识别方法进行识别效果研究对比。同时,结合现场三管塔的实测应变数据进行分析。结果表明:该方法可优化传感器布设,能够降低成本并提高监测效率,可在20 dB环境噪音下识别三管塔损伤局部区域范围。

关键词：三管塔损伤识别应变统计矩应变能量密度

云贵高原一座典型高原水库浮游植物群落演替特征及其与环境因子的关系

在线全文

学校读者我要写书评

暂无评论

湖泊科学 2024年第3期36卷 695-707页

作者：周帆陈晨徐韬杨阳贵州师范大学生命科学学院贵阳550025 贵州师范大学应急管理学院贵阳550025

浮游植物是水体的初级生产者,可以指示环境变化。高原水库由于其蒸发量大、雨季短、旱季长、抗污染能力差的特点,生态系统脆弱,其浮游植物群落的变化对环境条件更为敏感。为了解云贵高原地区乌江渡水库浮游植物的群落结构和演替特征,于2... 详细信息

浮游植物是水体的初级生产者,可以指示环境变化。高原水库由于其蒸发量大、雨季短、旱季长、抗污染能力差的特点,生态系统脆弱,其浮游植物群落的变化对环境条件更为敏感。为了解云贵高原地区乌江渡水库浮游植物的群落结构和演替特征,于2021年6月—2022年5月对乌江渡水库浮游植物群落进行调查,并应用功能群的方法对浮游植物进行分类。结果发现:1)2021年6月—2022年5月,乌江渡水库表层水体中共鉴定出浮游植物106种,共8门67属,其中,生物量最高的为硅藻门,种类数最多的为绿藻门;2)乌江渡水库表层水体理化性质和浮游植物群落存在显著的季节性差异,而相同季节内不同位置差异不显著;3)乌江渡水库表层水体春夏秋季为中—轻度富营养状态,而冬季为中营养状态;4)乌江渡水库中共有浮游植物群落功能群24类,基于优势度,其季节性演替模式为B/C/L0/P(春季)→B/J/L0/P/S1/T(夏季)→B/L0/P/S1/T(秋季)→B/P(冬季),春季和秋季优势功能群关联显著,而夏季和冬季优势功能群关联不显著,相对独立,即浮游植物群落演替伴随着群落稳定性的变化;5)氮磷营养盐、温度和溶解氧是影响乌江渡水库表层浮游植物群落的关键环境因子。本研究提供了云贵高原地区典型高原水体中浮游植物群落结构的背景信息,并从功能群的角度分析了群落的特征及其主要影响因子。

关键词：浮游植物功能群多样性优势度乌江渡水库

Association and its population heterogeneities between low-density lipoprotein cholesterol and all-cause and cardiovascular mortality:A population-based cohort study

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2024年第17期137卷 2075-2083页

作者： Jiapeng Lu Haibo Zhang Bowang Chen yang yang Jianlan Cui Wei Xu Lijuan Song Hao yang Wenyan He Yan Zhang Wenyao Peng Xi Li National Clinical Research Center for Cardiovascular Diseases State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100037China Shenzhen Clinical Research Center for Cardiovascular Diseases Fuwai Hospital Chinese Academy of Medical SciencesShenzhenGuangdong 518057China Central China Sub-center of the National Center for Cardiovascular Diseases ZhengzhouHenan 451460China

Background:The association and its population heterogeneities between low-density lipoprotein cholesterol(LDL-C)and all-cause and cardiovascular mortality remain *** aimed to examine the dose-dependent associations of LDL-C levels with specific types of cardiovascular disease(CVD)mortality and heterogeneities in the associations among different population ***:A total of 2,968,462 participants aged 35-75 years from China Health Evaluation And risk Reduction through nationwide Teamwork(ChinaHEART)(2014-2019)were *** proportional hazard models and Fine-Gray subdistribution hazard models were used to estimate associations between LDL-C categories(<70.0,70.0-99.9,100.0-129.9[reference group],130.0-159.9,160.0-189.9,and≥190.0 mg/dL)and all-cause and cause-specific ***:During a median follow-up of 3.7 years,57,391 and 23,241 deaths from all-cause and overall CVD were *** observed J-shaped associations between LDL-C and death from all-cause,overall CVD,coronary heart disease(CHD),and ischemic stroke,and an L-shaped association between LDL-C and hemorrhagic stroke(HS)mortality(P for non-linearity<0.001).Compared with the reference group(100.0-129.9 mg/dL),very low LDL-C levels(<70.0 mg/dL)were significantly associated with increased risk of overall CVD(hazard ratio[HR]:1.10,95%confidence interval[CI]:1.06-1.14)and HS mortality(HR:1.37,95%CI:1.29-1.45).Very high LDL-C levels(≥190.0 mg/dL)were associated with increased risk of overall CVD(HR:1.51,95%CI:1.40-1.62)and CHD mortality(HR:2.08,95%CI:1.92-2.24).The stronger associations of very low LDL-C with risk of CVD mortality were observed in individuals with older age,low or normal body mass index,low or moderate 10-year atherosclerotic CVD risk,and those without diagnosed CVD or taking *** associations between very high LDL-C levels and all-cause and CVD mortality were observed in younger ***:People with very low LDL-C had a higher risk of all-ca

关键词： Low-density lipoprotein cholesterol Mortality Association study Population heterogeneity Prospective cohort study

HQIOTA:基于IOTA的高质量共识机制

在线全文

学校读者我要写书评

暂无评论

控制理论与应用 2024年第8期41卷 1335-1340页

作者：胡倩陈杨杨东南大学网络空间安全学院江苏南京210096 东南大学自动化学院江苏南京210096

物联网应用(IOTA)作为一种经典的基于有向无环图而非链式结构的区块链系统,由于采用置信度共识方式导致交易确认依赖中心节点,并且难以及时发现交易冲突.为此,本文提出一种基于时间切片的设计方法,通过规定在每个时间片结束时由内部节... 详细信息

物联网应用(IOTA)作为一种经典的基于有向无环图而非链式结构的区块链系统,由于采用置信度共识方式导致交易确认依赖中心节点,并且难以及时发现交易冲突.为此,本文提出一种基于时间切片的设计方法,通过规定在每个时间片结束时由内部节点检查并同步当前交易子图,设计了一种high quality IOTA(HQIOTA)共识机制.在交易确认中,通过设计内部节点自适应调节控制替代了原有的外部规定阈值的转变.进而能及时发现并删除矛盾交易,解决了交易冲突不敏感的问题.本文基于概率分布模拟的网络环境进行实验,结果表明HQIOTA能比IOTA更快发现交易冲突并且更灵活地进行交易确认.

关键词：区块链共识机制有向无环图 IOTA

维普期刊数据库博看期刊