检索结果-南通市图书馆

Tunable VO_(2) cavity enables multispectral manipulation from visible to microwave frequencies

Light(Science & Applications) 2024年第3期13卷 510-518页

作者： hang wei Jinxin Gu Tao Zhao Zhiyuan Yan He-Xiu Xu Shuliang Dou Cheng-wei Qiu Yao Li Center for Composite Materials and Structure Harbin Institute of TechnologyHarbin 150001China National University of Singapore Department of Electrical&Computer EngineeringSingapore 117583Singapore School of Chemical Engineering and Technology Harbin Institute of TechnologyHarbin 150001China Suzhou Laboratory Suzhou 215123China

Optical materials capable of dynamically manipulating electromagnetic waves are an emerging field in memories,optical modulators,and thermal ***,their multispectral design preliminarily attracts much attention,aiming to enhance their efficiency and integration of ***,the multispectral manipulation based on these materials is challenging due to their ubiquitous wavelength dependence restricting their capacity to narrow *** this article,we cascade multiple tunable optical cavities with selective-transparent layers,enabling a universal approach to overcoming wavelength dependence and establishing a multispectral platform with highly integrated *** on it,we demonstrate the multispectral(ranging from 400 nm to 3 cm),fast response speed(0.9 s),and reversible manipulation based on a typical phase change material,vanadium *** platform involves tandem VO_(2)-based Fabry–Pérot(F-P)cavities enabling the customization of optical responses at target bands *** can achieve broadband color-changing capacity in the visible region(a shift of~60 nm in resonant wavelength)and is capable of freely switching between three typical optical models(transmittance,reflectance,and absorptance)in the infrared to microwave regions with drastic amplitude tunability exceeding *** work represents a state-of-art advance in multispectral optics and material science,providing a critical approach for expanding the multispectral manipulation ability of optical systems.

关键词： spectral microwave visible

来源：

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

Multiple types of disease-associated RNAs identification for disease prognosis and therapy using heterogeneous graph learning

引用

Science China(Information Sciences) 2024年第8期67卷 341-342页

作者： Wenxiang Zhang hang wei Wenjing Zhang Hao WU Bin LIU School of Computer Science and Technology Beijing Institute of Technology School of Computer Science and Technology Xidian University Department of Teaching and Research Shenzhen University General Hospital Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging National-Regional Key Technology Engineering Laboratory for Medical UltrasoundSchool of Biomedical Engineering Shenzhen University Medical School Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology

Identifying disease-associated RNAs is crucial in revealing the pathogenic mechanisms of diseases [1], and biologists have made notable progress in this field [2]. However, more effective computational methods are needed to provide reference disease-associated RNAs, reducing the manpower and material resources required for biological experiments.

关键词：

来源：

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Wearable and interactive multicolored photochromic fiber display

引用

Light(Science & Applications) 2024年第3期13卷 454-465页

作者： Pan Li Yuwei Wang Xiaoxian He Yuyang Cui Jingyu Ouyang Ju Ouyang Zicheng He Jiayu Hu Xiaojuan Liu hang wei Yu Wang Xiaoling Lu Qian Ji Xinyuan Cai Li Liu Chong Hou Ning Zhou Shaowu Pan Xiangru Wang Huamin Zhou Cheng-wei Qiu Yan-Qing Lu Guangming Tao State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and Engineering and Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Vascular Aging(HUST) Ministry of EducationWuhan 430030China School of Optoelectronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore National Laboratory of Solid State Microstructures Key Laboratory of Intelligent Optical Sensing and ManipulationCollege of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023China School of Performing Arts Wuhan Conservatory of MusicWuhan 430060China School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China School of Architecture and Urban Planning Huazhong University of Science and TechnologyWuhan 430074China School of Fashion Beijing Institute of Fashion TechnologyBeijing 100029China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China Tongji Medical College Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Endowing flexible and adaptable fiber devices with light-emitting capabilities has the potential to revolutionize the current design philosophy of intelligent,wearable interactive ***,significant challenges remain in developing fiber devices when it comes to achieving uniform and customizable light effects while utilizing lightweight ***,we introduce a mass-produced,wearable,and interactive photochromic fiber that provides uniform multicolored light *** designed independent waveguides inside the fiber to maintain total internal reflection of light as it traverses the *** impact of excessive light leakage on the overall illuminance can be reduced by utilizing the saturable absorption effect of fluorescent materials to ensure light emission uniformity along the transmission *** addition,we coupled various fluorescent composite materials inside the fiber to achieve artificially controllable spectral radiation of multiple color systems in a single *** prepared fibers on mass-produced kilometer-long using the thermal drawing *** fibers can be directly integrated into daily wearable devices or clothing in various patterns and combined with other signal input components to control and display patterns as *** work provides a new perspective and inspiration to the existing field of fiber display interaction,paving the way for future human–machine integration.

关键词： fiber interactive colored

来源：

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

Stochastic community assembly of abundant taxa maintains the relationship of soil biodiversity-multifunctionality under mercury stress

引用

Soil Ecology Letters 2024年第2期6卷 163-177页

作者： Shuai Du Xin-Qi Li Li Bi Dong Zhu hang-wei Hu Xiuli Hao Jiao Feng Qiaoyun Huang Yu-Rong Liu Key Laboratory of Urban Environment and Health Ningbo Urban Environment Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesXiamen361021China College of Resources and Environment Huazhong Agricultural UniversityWuhan430070China School of Agriculture and Food Faculty of Veterinary and Agricultural SciencesThe University of MelbourneParkvilleVIC3010Australia Hubei Key Laboratory of Soil Environment and Pollution Remediation Huazhong Agricultural UniversityWuhan430070China

Soil abundant taxa diversity positively related to multifunctionality under Hg stress.•Microbial network complexity of soil abundant taxa supported the strength of SBF.•Stochastic assembly of soil abundant subcommunity supported the strength of SBF.•Stochastic ratio was the most important predictor for the strength of *** is known that soil microbial communities are intricately linked to multiple ecosystem functions and can maintain the relationship between soil biodiversity and multifunctionality(SBF)under environmental ***,the relative contributions and driving forces of abundant and rare taxa within the communities in maintaining soil biodiversity-multifunctionality relationship under pollution stresses are still ***,we conducted microcosm experiments to estimate the importance of soil abundant and rare taxa in predicting these relationships under heavy metal mercury(Hg)stress in paired paddy and upland *** results revealed that the diversity of abundant taxa,rather than rare taxa,was positively related to multifunctionality,with the abundant subcommunity tending to maintain a larger proportion of soil functions including chitin degradation,protein degradation,and phosphorus *** multitrophic network complexity consisting of abundant species showed positive correlations with biodiversity and multifunctionality,and supported the strength of SBF within a network complexity *** assembly processes of the abundant subcommunity were positively correlated with the strength of SBF,although stochastic processes decreased the biodiversity and the multifunctionality,*** simultaneously accounting for multiple factors on the strength of SBF,we found that the stochastic community assembly ratio of abundant taxa was the most important predictor for SBF strength under Hg *** results highlight the importance of abundant taxa in supporting soil multifunctionality,and elucidate the linkages between co

关键词： abundant taxa biodiversity-multifunctionality relationship community assembly network complexity environmental stresses

来源：

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

Hematochezia due to rectal invasion by an internal iliac artery aneurysm: A case report

引用

World Journal of Clinical Cases 2024年第11期12卷 1980-1989页

作者： Fang Li Bin Zhao Yong-Qiang Liu Guo-Qing Chen Rong-Feng Qu Chao Xu Zhui Long Jin-Song Wu Mao Xiong wei-hang Liu Li Zhu Xiao-Ling Feng Lei Zhang Department of General Surgery Chongqing General HospitalChongqing 401147China

BACKGROUND This case report presents the rare occurrence of hematochezia due to an internal iliac artery aneurysm leading to an arterioenteric fistula,expanding the differential diagnosis for gastrointestinal *** emphasizes the importance of considering vascular origins in cases of atypical hematochezia,particularly in the absence of common gastrointestinal causes,and highlights the role of imaging and multidisciplinary management in diagnosing and treating such unusual *** SUMMARY A 75-year-old man with a history of hypertension presented with 12 d of hematochezia,experiencing bloody stools 7-8 times per *** computed tomography(CT)scans revealed an aneurysmal rupture near the right internal iliac artery with suspected hematoma *** levels progressively decreased to 7 g/*** arterial angiography and iliac arterycovered stent placement were performed,followed by balloon *** initial stabilization,minor rectal bleeding and abdominal pain persisted,leading to further diagnostic *** identified a neoplasm and potential perforation at the proximal *** exploratory laparotomy confirmed the presence of a hematoma and an aneurysm invading the rectal wall,necessitating partial rectal resection,intestinal anastomosis,and *** recovery was successful,with no further bleeding incidents and normal follow-up CT and colonoscopy results after six *** In cases of unusual gastrointestinal bleeding,it is necessary to consider vascular causes for effective diagnosis and intervention.

关键词： Iliac artery aneurysm Hematoma Rectum Hematochezia Case report

来源：

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

从教材走向学科:核心素养视域下教学研究视野的转变

引用

教育理论与实践 2024年第11期44卷 53-56页

作者：张伟航廊坊师范学院教育学院河北廊坊065000

培养学生的核心素养是当下学校教育的主要目标,也是教师教研的基本导向。核心素养视域下的教学研究必须要从教材走向学科,要通过这样的变化使学科教学转变为学科育人。走向学科的教学研究意味着学科是研究的出发点、对象和落脚点。从教... 详细信息

培养学生的核心素养是当下学校教育的主要目标,也是教师教研的基本导向。核心素养视域下的教学研究必须要从教材走向学科,要通过这样的变化使学科教学转变为学科育人。走向学科的教学研究意味着学科是研究的出发点、对象和落脚点。从教材走向学科的教学研究主要包括从教材立场走向学科立场、从教材视野走向学科视野、从教材思维走向学科思维、从教材内容转向学科体系等。

关键词：核心素养学生教学研究教材学科

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

模型冰水平圆盘中心加载弯曲强度试验研究

引用

船舶力学 2024年第8期28卷 1200-1208页

作者：赵伟航余朝歌田于逵刚旭皓卢鹏中国船舶科学研究中心江苏无锡214082 大连理工大学辽宁大连116024

由各种垂直施力引起的冰层破坏是极地探索和利用活动中重要的工程场景,而冰强度特性对于活动于此区域的平台的结构强度和安全操控的设计评估有直接影响。本文依托中国船舶科学研究中心小型冰水池,制作盐水柱状模型冰,开展模型冰水平圆... 详细信息

由各种垂直施力引起的冰层破坏是极地探索和利用活动中重要的工程场景,而冰强度特性对于活动于此区域的平台的结构强度和安全操控的设计评估有直接影响。本文依托中国船舶科学研究中心小型冰水池,制作盐水柱状模型冰,开展模型冰水平圆盘中心加载试验。试验对环向外沿均布支撑下的水平圆盘冰样中心区域垂直加载,利用测力系统记录冰样从起始承载直至弯曲破坏的力值曲线,根据受力峰值求取冰样破坏时的弯曲强度,利用影像系统捕捉冰样破坏失效细节,分析冰样承载失效过程。在此基础上,改变加载速度和冰样温度,开展系列试验测量,分析两个因素对模型冰弯曲强度的影响。本文工作为测量分析模型冰强度特性补充了一种可行手段,也为深入研究冰区结构物与冰层垂直作用机理和冰载荷形成机制建立了初步基础。

关键词：冰水池盐水柱状模型冰水平圆盘中心加载弯曲强度

来源：

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

钢绞线导波传播特性研究

引用

工程力学 2024年第S01期41卷 98-103页

作者：李浩华陈华鹏罗伟兵张国印李苇航华东交通大学交通运输工程学院江西南昌330013

导波作为一种有效的无损检测方法,在钢绞线检测中具有广阔的应用前景。钢绞线的特殊螺旋结构,使得导波在钢绞线中的传播性质尚未完全了解。该文研究了导波在七丝钢绞线中频散性质。利用FrenetSerret方法建立了螺旋坐标系,在此基础上对... 详细信息

导波作为一种有效的无损检测方法,在钢绞线检测中具有广阔的应用前景。钢绞线的特殊螺旋结构,使得导波在钢绞线中的传播性质尚未完全了解。该文研究了导波在七丝钢绞线中频散性质。利用FrenetSerret方法建立了螺旋坐标系,在此基础上对传统半解析有限元方法进行了改进,得到了适用于螺旋结构的波导特征方程。计算了单根高强直钢丝的频散曲线,分析了导波的频散特性,研究了导波在七丝钢绞线中传播的频散特性,得到的频散曲线“陷频”现象中心频率与实验结果一致,并且钢绞线和直钢丝的频散曲线具有很大差异。通过钢绞线超声导波应力测试实验验证了该文所提出的螺旋半解析有限元法的正确性和有效性。结果表明,实验结果与理论群速度吻合良好,并且钢绞线的轴向应力与钢绞线中导波群速度近似线性关系。

关键词：导波检测半解析有限元法钢绞线螺旋坐标系频散特性

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

面向中国式现代化:农畜产品品牌打造的重点任务与实践路径

引用

饲料研究 2024年第2期47卷 189-192页

作者：董英娟李巍杭河北石油职业技术大学机械工程系河北承德067000

作为农业品牌化的重要内容之一,农畜产品品牌打造是转变传统生产经营方式、调整农业产业结构的重要抓手,在落实品牌强国战略、推动中国式现代化建设发挥着关键作用。实践表明,我国农畜产品品牌建设政策体系逐步完善,品牌培育初具规模,... 详细信息

作为农业品牌化的重要内容之一,农畜产品品牌打造是转变传统生产经营方式、调整农业产业结构的重要抓手,在落实品牌强国战略、推动中国式现代化建设发挥着关键作用。实践表明,我国农畜产品品牌建设政策体系逐步完善,品牌培育初具规模,畜牧品牌实力逐步增强,品牌建设基础支撑日渐完备,为高质量打造农畜产品品牌奠定扎实基础。面向中国式现代化,增强品牌建设主体力量、着力提升品牌影响力、强化农畜产品加工能力、完善农畜产品质量追溯体系是农畜产品品牌打造的重点任务。为加快打造高端农畜产品品牌、助力农业强国建设,需积极培育引导,壮大品牌主体力量;全渠道发力,着力提升品牌影响力;拓展产业链条,提升农畜产品加工能力;坚持标准化发展,完善农畜产品质量追溯体系。

关键词：中国式现代化农畜产品品牌品牌强国战略品牌建设主体质量追溯

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

VMD可视化及深度学习的滚动轴承故障诊断

引用

机械设计与制造 2024年第7期 210-214,220页

作者：魏航信程欢吴伟王晓荣西安石油大学机械工程学院陕西西安710065 长庆油田油气工艺研究院陕西西安710018

滚动轴承故障检测信号具有非线性、不平稳的特点,且特征量难以提取,因此提出变分模态分解(VMD)信号的可视化与深度学习神经网络相结合的方法以诊断轴承故障。首先对轴承原始振动信号进行VMD分解,滤除信号噪声;其次采用希尔伯特黄变换消... 详细信息

滚动轴承故障检测信号具有非线性、不平稳的特点,且特征量难以提取,因此提出变分模态分解(VMD)信号的可视化与深度学习神经网络相结合的方法以诊断轴承故障。首先对轴承原始振动信号进行VMD分解,滤除信号噪声;其次采用希尔伯特黄变换消除VMD存在的“欠包络”问题;接着对一维时间序列信号进行可视化变换,提取信号的格莱姆角视场(GAF)二维特征图,以充分反映不同故障的特征。最后采用卷积神经网络(CNN)对可视化图形进行诊断,CNN网络包括两个卷积层和两个池化层,卷积层的内核均为(5×5),池化层内核均为(2×2),卷积层深度分别为20和32。对采集的10类轴承振动信号进行诊断,训练集样本数量为3791,训练精度为96.5%,测试集样本数量为209,测试精度为95.2%,证明了本方法的有效性。

关键词：深度学习 VMD 格莱姆角视场故障诊断滚动轴承

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：