检索结果-南通市图书馆

Particuology 2024年第6期89卷 246-257页

作者： Yanghong Wang Ziqiang Meng zipei Zhang Min Xia Li Xia Wei Li School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China

Dynamic light scattering(DLS)is a nondestructive,well-established technique for the size characterization of proteins,nanoparticles,polymers,and colloidal ***,current DLS techniques are only applied to particle groups of single composition due to the limitation of their inversion *** this study,we propose a particle size distribution inversion algorithm based on the Tikhnonov regularization method that can be applied to the dual-substance particle *** algorithm retrieves the particle size distributions of two substances,respectively,by taking advantage of their refractive index *** simulation results reveal that the algorithm has excellent accuracy and stability when the scattering angle is 30°.Instead of the original identity matrix,the first-order difference matrix and second-order difference matrix are used as the regular matrix when utilizing the Tikhnonov algorithm,which obviously improves the anti-interference,accuracy,and stability of the ***,the inversion of particle size distribution is carried out at a 0.01%–1%noise level,which shows that the algorithm has an available antinoise ***,experimental particle size measurements for a mixture of polystyrene beads and toner particles demonstrate that the proposed algorithm is superior to the traditional Tikhnonov algorithm in applicability and accuracy.

关键词： Dynamic light scattering Dual-substance mixture Particle sized istribution Tikhnonov regularization

The intrinsic developmental age signal defines an age-dependent climbing behavior in cucumber

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

Horticultural Plant Journal 2024年第3期10卷 797-808页

作者： Zezhou Hong Xinrui Wang zipei Fan Jiahao Wang Aiyi Yang Guochao Yan Yong He Huasen Wang Zhujun Zhu Yunmin Xu College of Horticulture Science Zhejiang Agriculture and Forestry UniversityHangzhouZhejiang 311300China Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable Ministry of Agriculture and Rural AffairsHangzhouZhejiang 311300China Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province HangzhouZhejiang 311300China

The tendril is a climbing organ in cucurbits and functions in physical support and to avoid shading by neighboring ***,how cucurbits produce tendrils to obtain climbing ability is largely *** this study,tendril phenotypes were investigated during different developmental *** results revealed that tendril growth exhibited an age-dependent pattern in *** growth was inhibited,and the tendril was formed as a short tendril[nonfunctional tendril(nonF-tendril),approximately 0.1 cm]during the seedling *** contrast,enhanced cell proliferation and cell expansion led to rapid elongation of the tendril during the climbing stage,and the tendril formed as a functional tendril(F-tendril,approximately 30 cm)to obtain climbing ***-qPCR detection showed that age-dependent tendril growth correlated negatively with the abundance of the conserved age regulator *** induced CsmiR156 to inhibit CsSPLs,and F-tendril formation and climbing ability were delayed in defoliated cucumbers,which confirmed the role of CsmiR156 in regulating tendril growth in ***,exogenous gibberellin(GA)treatment showed that GA positively regulated tendril growth,and RT-qPCR detection showed that the GA bio-synthetic genes and metabolic genes were affected by age pathway,suggesting that the age pathway depended on GA bio-synthetic and metabolic pathway to regulate cell expansion to determine tendril *** summary,our work reveals that change in tendril type is an important marker of phase transition in cucumber,and tendril growth is regulated by an intrinsic developmental age signal,ensuring that the cucumber obtains climbing ability at a suitable age.

关键词： Cucumber Tendril Age CsmiR156 CsSPL Climbing ability

A nitric oxide-triggered hydrolysis reaction to construct controlled self-assemblies with complex topologies

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第4期67卷 1289-1299页

作者： Wenzhuo Chen Yuping Tang Shuai Chen zipei Chen Jia He Hongbin Huo Juan Zhang Jiajia Li Fei Yan Wei Tian Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs ResearchCollege of PharmacyShaanxi University of Chinese MedicineXianyang 712046China Shaanxi Key Laboratory of Macromolecular Science and Technology Xi’an Key Laboratory of Hybrid Luminescent Materials and Photonic DeviceMOE Key Laboratory of Material Physics and Chemistry under Extraordinary ConditionsSchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Polymeric Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China

Hydrolysis reactions are capable of directing the non-equilibrium assembly of biomolecular scaffolds to realize sophisticated structures and functions in natural ***,utilizing the proper hydrolysis reactions to construct controlled assemblies with complex topologies is still an arduous challenge in artificial systems and needs to be ***,we report a nitric oxide(NO)-triggered slow hydrolysis strategy for the controlled construction of biomimetic supramolecular toroids(STs),thus realizing their visualization of intermediate structures and regulation of geometry *** presented protocol harnesses hydrolysis reactions to control of non-equilibrium self-assembly processes for the construction of self-assemblies with complex topologies successfully,which sheds light on how the hydrolysis reaction rate can modulate the kinetic pathway of assembly,thus realizing the artificial establishment of bio-inspired hierarchical structures.

关键词： supramolecular toroids controlled self-assembly nitic oxide-triggered hydrolysis pathway regulation

Parallel fabrication of silica optical microfibers and nanofibers

在线全文

学校读者我要写书评

暂无评论

Light(Advanced Manufacturing) 2024年第2期5卷 106-114页

作者： Hubiao Fang Yu Xie zipei Yuan Dawei Cai Jianbin Zhang Xin Guo Limin Tong Interdisciplinary Center for Quantum Information New Cornerstone Science LaboratoryState Key Laboratory of Extreme Photonics and InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Jiaxing Key Laboratory of Photonic Sensing&Intelligent Imaging Intelligent Optics&Photonics Research CenterJiaxing Research InstituteZhejiang UniversityJiaxing 314000China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Optical micro/nanofibers(MNFs)taper-drawn from silica fibers possess intriguing optical and mechanical ***,MNF array or MNFs with identical geometries have been attracting more and more attention,however,current fabrication technique can draw only one MNF at a time,with a low drawing speed(typically 0.1 mm/s)and a complicated process for high-precision control,making it inefficient in fabricating multiple ***,we propose a parallel-fabrication approach to simultaneously drawing multiple(up to 20)MNFs with almost identical *** fiber diameter larger than 500 nm,measured optical transmittances of all as-drawn MNFs exceed 96.7%at 1550-nm wavelength,with a diameter deviation within 5%.Our results pave a way towards high-yield fabrication of MNFs that may find applications from MNF-based optical sensors,optical manipulation to fiber-to-chip interconnection.

关键词： Parallel fabrication Fiber tapering Tensile force Electric heater Temperature Micro/nanofiber

Compression of Battery X-Ray Tomography Data with Machine Learning

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

Chinese Physics Letters 2024年第9期41卷 153-158页

作者： zipei Yan Qiyu Wang Xiqian Yu Jizhou Li Michael K.-P.Ng Department of Electronic Engineering The Chinese University of Hong KongHong KongChina Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Huairou Division Institute of PhysicsChinese Academy of SciencesBeijing 101400China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China CUHK Shenzhen Research Institute Shenzhen 518057China Department of Mathematics Hong Kong Baptist UniversityHong KongChina

With the increasing demand for high-resolution x-ray tomography in battery characterization,the challenges of storing,transmitting,and analyzing substantial imaging data necessitate more efficient *** data compression methods struggle to balance reduction ratio and image quality,often failing to preserve critical details for accurate *** study proposes a machine learning-assisted compression method tailored for battery x-ray imaging *** physics-informed representation learning,our approach significantly reduces file sizes without sacrificing meaningful *** validate the method on typical battery materials and different x-ray imaging techniques,demonstrating its effectiveness in preserving structural and chemical *** results show an up-to-95 compression ratio while maintaining high fidelity in the projection and reconstructed *** proposed framework provides a promising solution for managing large-scale battery x-ray imaging datasets,facilitating significant advancements in battery research and development.

关键词： battery Battery details

在线全文

学校读者我要写书评

暂无评论

Advances in Ophthalmology Practice and Research 2024年第2期4卷 84-94页

作者： Wei Wu Lisha Yi Kai Zhang zipei Chen Caiping Shi Chen Chen Yilu Cai Lidan Hu Xiangjun Chen Eye Center of the Second Affiliated Hospital Zhejiang University School of MedicineHangzhouChina Zhejiang Provincial Key Lab of Ophthalmology the Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina Department of Nephrology Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center for Child HealthHangzhouChina School of Chemistry and Molecular Biosciences The University of QueenslandSt LuciaQueenslandAustralia School of Biomedical Sciences University of QueenslandSt Lucia CampusBrisbaneAustralia Institute of Translational Medicine Zhejiang University School of MedicineHangzhouChina

Background:Refractive errors,particularly myopia,are the leading visual disorders worldwide,significantly affecting the quality of life(QOL)even after *** scoping review focuses on health-related quality of life(HRQOL)measurements for children and adolescents with refractive *** text:We explored generic and disease-specific HRQOL tools,examining their content,psychometric prop-erties,and the impact of various interventions on *** English databases—PubMed,Embase,and one Chinese database,CNKI,were searched for relevant studies published from January 2001 to October ***-clusion criteria encompassed studies using standardized instruments to assess the QOL of children aged 0–18 with refractive *** review compares prevalent HRQOL measurements,analyzes children's refractive error as-sessments,and discusses intervention effects on patient ***:The study underlines the necessity of developing disease-specific QOL instruments for very young children and serves as a practical guide for researchers in this *** findings advocate for a targeted approach in HRQOL assessment among the pediatric population,identifying critical gaps in current methodologies.

关键词： Quality of life Assessment Children Adolescent Scoping review

基于引用内容分析的学者知识扩散特征研究——以刘则渊教授为例

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

现代情报 2024年第4期44卷 32-41,86页

作者：肖梓培刘萍武汉大学信息管理学院湖北武汉430072

[目的/意义]知识通过扩散与传播,推动学术研究的传承与创新。对学者知识扩散特征进行内容层面的探析,有助于揭示学者对学科知识发展的作用,完善对学者学术贡献的评估。[方法/过程]收集刘则渊教授作为第一作者的105篇学术论文及引证文献... 详细信息

[目的/意义]知识通过扩散与传播,推动学术研究的传承与创新。对学者知识扩散特征进行内容层面的探析,有助于揭示学者对学科知识发展的作用,完善对学者学术贡献的评估。[方法/过程]收集刘则渊教授作为第一作者的105篇学术论文及引证文献,采用引用内容分析方法,从学科领域、知识单元、主题思想三维度探究刘则渊教授知识扩散特征。[结果/结论]研究结果显示,在学科维度,引证文献涵盖82个学科,表现出刘则渊教授广泛的学科影响力;在知识单元维度,从引证文献引用句中抽取不重复知识单元共98个,包括概念、理论与方法技术3类;在主题思想维度,刘则渊教授5大主题思想在不同学科都体现出了传承与发展。这种多维度的学者知识扩散研究,有助于全方位揭示学者对不同学科知识发展的作用,为评价学者知识影响力提供了方向。

关键词：知识扩散引用内容分析刘则渊多维分析

小胶质细胞在糖尿病视网膜病变视网膜神经血管单元中的作用

在线全文

学校读者我要写书评

暂无评论

国际眼科杂志 2024年第5期24卷 731-736页

作者：陈志王子佩李红遵义医科大学贵州省遵义市563003 遵义医科大学附属医院眼科、贵州省眼科医院贵州省遵义市563003 国家眼病临床研究中心贵州省分中心、贵州省眼疾病特色重点实验室贵州省遵义市563003

糖尿病视网膜病变(DR)是工作年龄人群主要致盲眼病,血-视网膜屏障破坏是关键环节。近年研究显示,DR不再是单纯微血管病变,而是视网膜胶质细胞与神经退行性变、微血管病变的共同发展结果。DR病程早期视网膜神经血管单元(RNVU)中神经元的... 详细信息

糖尿病视网膜病变(DR)是工作年龄人群主要致盲眼病,血-视网膜屏障破坏是关键环节。近年研究显示,DR不再是单纯微血管病变,而是视网膜胶质细胞与神经退行性变、微血管病变的共同发展结果。DR病程早期视网膜神经血管单元(RNVU)中神经元的损伤可能早于血管内皮的变化,胶质细胞的激活加重血管屏障功能障碍。视网膜小胶质细胞是常驻视网膜的局部免疫细胞,参与长期高糖诱导的慢性炎症反应、高糖诱导其分泌多种炎症因子,破坏血-视网膜屏障结构、增加神经元凋亡、改变Müller细胞胶质化等,影响视网膜局部稳态平衡。RNVU作为一个单元结构研究,近年来受到越来越多的关注,本文将针对小胶质细胞在RNVU中的作用机制、研究进展进行综述。

关键词：小胶质细胞视网膜神经血管单元糖尿病视网膜病变炎症综述

新时代专业学位研究生教育的内在逻辑与发展进路

在线全文

学校读者我要写书评

暂无评论

职业技术教育 2024年第27期45卷 26-32页

作者：彭虹斌钟梓培华南师范大学政治与公共管理学院广州510006 华南师范大学国家教材建设重点研究基地华南师范大学港澳台教材综合研究基地

从教育政策内容分析的视角出发,发现新时代专业学位研究生教育呈现出多种内在逻辑,包括以现实需求为出发点的目标逻辑,以观念转变与格局重塑为策略的发展逻辑,以实践性、职业性、创新性三位一体为育人理念的价值逻辑和以多方主体间协同... 详细信息

从教育政策内容分析的视角出发,发现新时代专业学位研究生教育呈现出多种内在逻辑,包括以现实需求为出发点的目标逻辑,以观念转变与格局重塑为策略的发展逻辑,以实践性、职业性、创新性三位一体为育人理念的价值逻辑和以多方主体间协同互动为培养手段的育人逻辑。依据以上逻辑,我国专业学位研究生教育高质量发展需要进一步明确行业产业人才需求,实现资源的相对倾斜,在稳步发展中找准理论定位,完善产学研协同育人的联合培养机制。

关键词：新时代专业学位研究生教育高质量发展

在线全文

学校读者我要写书评

暂无评论

浙南传统民居转角与披屋结构研究

华中建筑 2024年第9期42卷 74-77页

作者：李紫沛中国美术学院建筑学院

我国传统民居院落通常由主房和副房两部分组成,故而如何处理主副房的连接成为民居营建过程中必须要面对的问题。不同于北方四合院中常见的转角留空的处理方式,浙南大屋选择将主副房相连而呈现为完整的“ㄇ”或“H”型院落。其转角位置... 详细信息

我国传统民居院落通常由主房和副房两部分组成,故而如何处理主副房的连接成为民居营建过程中必须要面对的问题。不同于北方四合院中常见的转角留空的处理方式,浙南大屋选择将主副房相连而呈现为完整的“ㄇ”或“H”型院落。其转角位置要处理主副两套构架的交接,结构复杂。然而受制于传统平立剖制图手法,其常为主流民居研究所忽视。同时出于扩展生活空间的需要,民居常在转角位置加建形成披屋。披屋类型灵活多变,更少有研究关注。该文以浙南地区的民居实例测绘和野外调研为基础,聚焦于浙南民居中的转角与披屋结构,梳理了浙南民居中常见的三种转角与披屋结构类型,并选取典型案例,分析了其在民居中的空间表现。通过对浙南民居中长期被忽视的转角与披屋结构研究,以期实现对浙南民居结构更整体的把握。

关键词：浙南传统民居木构转角披屋