检索结果-南通市图书馆

Journal of Green Building 2020年第1期15卷 3-14页

作者： Šimůnková Kristýna Hýsek Štěpán Oberhofnerová Eliška Pánek Miloš Fidan Hakan Faculty of Forestry and Wood Sciences Czech University of Life Sciences in PragueKamycka 129Prague 16500Czech Republic

The adhesion of coatings to wood is important for their long-term *** this study,the adhesion strength of water-based acrylate coatings used for wooden windows after exposure to artificial weathering(AW)and temperature cycling(TC)was *** analysis of the adhesion quality of coatings was performed via a pull-off test and failure *** 3-layered and 4-layered white and brown acrylate dispersions from six different producers were compared and the effect of coating thickness on adhesion strength was *** adhesion strength values proved to be very *** AW,the adhesion strength and its variability increased for all the *** had no statistically significant effect on the adhesion strength *** coating systems were initially characterized by lower adhesion strength,but after AW and TC,they reached higher adhesion strength values than brown *** overall highest adhesion after AW and TC was recorded for the coatings based on alkyd-acrylate hybrid basis(Producer 3),while the lowest adhesion variability after AW was measured for one type of tested acrylate coating(Producer 4).The effect of different layering on adhesion strength was not demonstrated in this study.

关键词： acrylate coatings adhesion strength artificial weathering coating thickness pull-off test temperature cycling

Clostridium difficile infection aggravates colitis in interleukin 10-deficient mice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第45期20卷 17084-17091页

作者： Mi na Kim Seong-Joon Koh Jung Mogg Kim Jong Pil im Hyun Chae Jung Joo Sung Kim Seoul national University Healthcare System Gangnam Center Seoul National University Hospital Department of Internal Medicine Seoul National University Boramae Hospital Seoul National University College of Medicine Department of Microbiology Hanyang University College of Medicine Department of Internal Medicine Liver Research Institute Seoul National University College of Medicine

Aim: To investigate the effect of Clostridium difficile (C. difficile) infection in an interleukin 10-deficient (IL-10-/-) mouse model of inflammatory bowel disease.

关键词： Clostridium difficile Inflammatory bowel disease Interleukin 10-deficient mice Interferon-&#x003b3 Colitis

A highly sensitive chemical gas detecting transistor based on highly crystalline CVD-grown MoSe2 films

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

nano Research 2017年第6期10卷 1861-1871页

作者： Jongyeol Baek Demin Yin na Liu Inturu Omkaram Chulseung Jung Healin im Seongin Hong Seung Min Kim Young Ki Hong Jaehyun Hur Youngki Yoon Sunkook Kim Multi-Functional nano/Bio Electronics Lab. Kyung Hee University Gyeonggi 446-701 Republic of Korea Department of Electrical and Computer Engineering & Waterloo Institute for nanotechnology (WIN) University of Waterloo Waterloo ON N2L 3GI Canada Institute of Advanced Composite Materials Korea Institute of Science and Technology (KIST) Jeonbuk 565-905 Republic of Korea Department of Chemical and Biological Engineering Gachon University Seongnam-si Gyeonggi 13120 Republic of Korea

Layered semiconductors with atomic thicknesses are becoming increasingly important as active elements in high-performance electronic devices owing to their high carrier mobilities, large surface-to-volume ratios, and rapid electrical responses to their surrounding environments. Here, we report the first implementation of a highly sensitive chemical-vapor-deposition-grown multilayer MoSe2 field-effect transistor （FET） in a NO2 gas sensor. This sensor exhibited ultra-high sensitivity （S = ca. 1,907 for NO2 at 300 ppm）, real-time response, and rapid on-off switching. The high sensitivity of our MoSe2 gas sensor is attributed to changes in the gap states near the valence band induced by the NO2 gas absorbed in the MoSe2, which leads to a significant increase in hole current in the off-state regime. Device modeling and quantum transport simulations revealed that the variation of gap states with NO2 concentration is the key mechanism in a MoSe2 FET-based NO2 gas sensor. This comprehensive study, which addresses material growth, device fabrication, characterization, and device simulations, not only indicates the utility of MoSe2 FETs for high-performance chemical sensors, but also establishes a fundamental understanding of how surface chemistry influences carrier transport in layered semiconductor devices.

关键词： transition metaldichalcogenides MoSe2 chemical sensors chemical vapor depositon

基于多源信息融合的光电经纬仪自动跟踪技术研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

舰船电子工程 2025年第1期45卷 186-190页

作者：付长亮那晨旭 91913部队大连116041

由于海环境下目标暗弱、成像变化、穿云及遮挡等多种因素,光电经纬仪探测目标过程中自动跟踪的稳定度和精准度都受到严重影响,基于这一事实,文章提出了基于知识库场景分析判断的自适应目标检测识别方法。结合光电经纬仪探测器多样、图... 详细信息

由于海环境下目标暗弱、成像变化、穿云及遮挡等多种因素,光电经纬仪探测目标过程中自动跟踪的稳定度和精准度都受到严重影响,基于这一事实,文章提出了基于知识库场景分析判断的自适应目标检测识别方法。结合光电经纬仪探测器多样、图像源信息多的特点,拟采用D-S证据理论来进行多图像源信息的融合判断,进一步优化目标图像特征融合检测和目标运动特征的融合跟踪,以实现复杂因素干扰下光电经纬仪对目标的高精度稳定自动跟踪,为光电经纬仪在海环境下自动跟踪稳定性研究奠定了基础,具有一定的应用价值和推广价值。

关键词：自动跟踪目标检测识别多源信息融合 D-S证据

GA-2D-VMD联合FNLM的医学超声图像去噪方法研究

在线全文

学校读者我要写书评

暂无评论

机械设计与制造 2025年第2期 375-379,384页

作者：闫洪波那毅然沈雅楠徐洋内蒙古科技大学机械工程学院内蒙古包头014010 包头医学院第一附属医院内蒙古包头014010

医学超声成像过程中出现的斑点噪声,降低了图像的可视性,传统算法在去噪后可能会出现图像边缘细节模糊、去噪效果不佳等问题。针对于此,提出了基于遗传算法优化的2D-VMD与FNLM相结合的方法。首先利用遗传算法对2D-VMD的两个参数同时进... 详细信息

医学超声成像过程中出现的斑点噪声,降低了图像的可视性,传统算法在去噪后可能会出现图像边缘细节模糊、去噪效果不佳等问题。针对于此,提出了基于遗传算法优化的2D-VMD与FNLM相结合的方法。首先利用遗传算法对2D-VMD的两个参数同时进行自适应寻优,接着采用优化2D-VMD分解噪声图像,并借助相关系数筛选有效分量,然后使用FNLM滤波去噪,最后将去噪后的子模态重构完成去噪。实验结果证明,该方法具有优秀的去噪效果和保留图像边缘细节信息的能力,客观评价指标亦有明显的提升。

关键词：斑点噪声遗传算法二维变分模态分解参数优化快速非局部均值图像去噪

在线全文

学校读者我要写书评

暂无评论

中华医院感染学杂志 2025年第1期35卷 97-101页

作者：戴旭姜姗张慧锦孙娜薄玉中国医科大学附属盛京医院小儿消化肾脏风湿免疫内科病房辽宁沈阳110000

目的探讨EB病毒(EBV)感染相关原发传染性单核细胞增多症(im)患儿白蛋白(ALB)、红细胞沉降率(ESR)、乳酸脱氢酶(LDH)、CD_(4)^(+)/CD_(8)^(+)水平及其诊断价值,为临床治疗提供理论依据。方法选取2020年9月-2023年9月中国医科大学附属盛... 详细信息

目的探讨EB病毒(EBV)感染相关原发传染性单核细胞增多症(im)患儿白蛋白(ALB)、红细胞沉降率(ESR)、乳酸脱氢酶(LDH)、CD_(4)^(+)/CD_(8)^(+)水平及其诊断价值,为临床治疗提供理论依据。方法选取2020年9月-2023年9月中国医科大学附属盛京医院收治的68例EBV感染相关原发im患儿(研究组)和82名同期健康体检儿童(对照组),比较两组ALB、ESR、LDH、CD_(4)^(+)、CD_(8)^(+)、CD_(4)^(+)/CD_(8)^(+)水平,分析EBV-Dna载量与ALB、ESR、LDH、CD_(4)^(+)/CD_(8)^(+)相关性,分析ALB、ESR、LDH、CD_(4)^(+)/CD_(8)^(+)单独及联合对EBV感染相关原发im的诊断价值。结果研究组EBV-Dna载量(5.14±1.18)×10^(7)copy/ml高于对照组(Pna载量与ESR、LDH呈正相关,与ALB、CD_(4)^(+)/CD_(8)^(+)呈负相关(Pim的曲线下面积(AUC)值为0.949,高于单独检测的AUC值(Pim患儿EBV-Dna载量高,其与ALB、ESR、LDH、CD_(4)^(+)、CD_(8)^(+)、CD_(4)^(+)/CD_(8)^(+)水平有关,且四指标联合检测对EBV感染相关原发im诊断价值较高。

关键词： EB病毒感染原发传染性单核细胞增多症白蛋白红细胞沉降率乳酸脱氢酶 CD_(4)^(+)/CD_(8)^(+)

同方期刊数据库

Minimum Core Genome Sequence Typing of Brucella From China

在线全文

学校读者我要写书评

暂无评论

Infectious Microbes & Diseases 2023年第1期5卷 29-35页

作者： na Zhao Buyun Cui national Institute of Hospital Administration National Health CommissionBeijingChina national Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesState Key Laboratory for Infectious Disease Prevention and ControlBeijingChina

The Gram-negative bacterial genus Brucella includes six classic species based on host specificity,pathogenicity and phenotypic *** more Brucella species were identified in *** many Brucella genomes have been sequenced,genome sequences and analysis of Brucella strains isolated in China are still *** efficient genome-based Brucella typing method is also *** this study,we used the minimum core genome(MCG)typing method to identify and type Brucella *** Brucella isolates fromChinawere newly *** genome sequences of 55 representative Brucella strainswere *** the 75 genomes,1089 genes and 52,030 single nucleotide polymorphisms(SNPs)shared by all isolates were considered as the MCG genes and MCG *** these 52,030 MCG SNPs,Brucella was divided into six MCG *** addition,average nucleotide identity(ANI)values and the distributions of 184 virulence genes were all *** proportions of virulence genes were 90.96%,93.56%,95.89%,86.04%,85.78%and 91.87%for MCG groups 1 to 6,*** intragroup ANI values were higher than the intergroup values,further confirming the validity of the MCG taxonomy *** melitensis and Brucella abortus,the two main Brucella species pathogenic to humans,were well separated from other *** the development and cost reduction of next-generation sequencing,theMCG typing method can be used for rapid identification of Brucella,which can contribute to the rapid diagnosis of brucellosis and ensure timely and effective treatment.

关键词： Brucella minimum core genome sequence typing

A facile one-step approach to hierarchically assembled core-shell-like MnO2@MnO2 nanoarchitectures on carbon fibers： An efficient and flexible electrode material to enhance energy storage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

nano Research 2016年第5期9卷 1507-1522页

作者： Goli nagaraju Yeong Hwan Ko Sung Min Cha Sang Hyuk im Jae Su Yu Department of Electronics and Radio Engineering Institute for Wearable Convergence Electronics Kyung Hee University 1732 Deogyeong-daero Giheung-gu Yongin-si Gyeonggi-do 446-701 Republic of Korea Functional Crystallization Center (ERC) Department of Chemical Engineering Kyung Hee University 1732 Deogyeong-daeroGiheuncl-qu Yonqin-si Gyeonqqi-do 446-701 Republic of Korea

Hierarchical core-shell-like MnO2 nanostructures （NSs） were used to anchor MnO2 hexagonal nanoplate arrays （HNPAs） on carbon cloth （CC） fibers. The NSs were prepared by a novel one-step electrochemical deposition method. Under an external cathodic voltage of -2.0 V for 30 min, hierarchical core-shell-like MnO2-NS-decorated MnO2 HNPAs （MnO2 NSs@MnO2 HNPAs） were uniformly grown on CC with reliable adhesion. The phase purity and morphological properties of the samples were characterized by various physicochemical techniques. At a constant external cathodic voltage, growth of MnO2 NSs@MnO2 HNPAs on CC was carried for different time periods. When utilized as a flexible, robust, and binder-free electrode for pseudocapacitors, the hierarchical core-shell-like MnO2 NSs@MnO2 HNPAs on CC showed clearly enhanced electrochemical properties in 1 M na2SO4 electrolyte solution. The results indicate that the MnO2 NSs@MnO2 HNPAs on CC have a maximum specific capacitance of 244.54 F/g at a current density of 0.5 A/g with excellent cycling stability compared to that of bare MnO2 HNPAs on CC （112.1 F/g at 0.5 A/g current density）. We believe that the superior charge storage performance of the pseudocapacitive electrode can be mainly attributed to the hierarchical MnO2 NSs@MnO2 HNPAs building blocks that have a large specific surface area, offering additional electroactive sites for efficient electrochemical reactions. The facile and single-step approach to growth of hierarchical pseudocapacitive materials on textile based electrodes opens up the possibility for the fabrication of high-performance flexible energy storage devices.

关键词： manganese oxide hierarchical structures carbon cloth electrochemical deposition energy storage properties

左右制衡机制下不同电刺激对脑卒中后偏瘫患者大脑皮质兴奋性和上肢运动功能的影响

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中华物理医学与康复杂志 2025年第1期47卷 19-24页

作者：王睿月齐丽娜陈琳渝侯兵窦娜车鹏程华北理工大学护理与康复学院唐山063210

目的观察左右制衡机制下不同电刺激对脑卒中患者大脑皮质兴奋性和上肢运动功能的影响。方法选取符合纳入和排除标准的脑卒中偏瘫患者30例,随机分为神经肌肉电刺激(NMES)组和对侧控制功能性电刺激(CCFES)组,各15例。2组患者均进行常规康... 详细信息

目的观察左右制衡机制下不同电刺激对脑卒中患者大脑皮质兴奋性和上肢运动功能的影响。方法选取符合纳入和排除标准的脑卒中偏瘫患者30例,随机分为神经肌肉电刺激(NMES)组和对侧控制功能性电刺激(CCFES)组,各15例。2组患者均进行常规康复治疗,NMES组增加促进伸肘、伸腕运动的NMES治疗,CCFES组增加促进伸肘、伸腕运动的CCFES治疗,2组刺激时间均为每日1次,每次20 min,每周5 d,连续治疗4周。于治疗前和治疗4周后(治疗后)分别检测2组患者的双侧静息运动阈值(RMT)、双侧运动诱发电位(MEP)皮质潜伏期、波幅和半球间不对称性(IHA)指数,同时采用Fugl-Meyer评定量表上肢部分(FMA-UE)和偏瘫上肢功能测试(香港版)(FTHUE-HK)评估其上肢的运动功能,并采用Pearson相关系数对皮质兴奋性与上肢功能结果进行相关性分析。结果治疗后,2组患者患侧半球的RMT、MEP潜伏期和波幅、IHA值,以及FMA-UE评分和FTHUE-HK评定与组内治疗前比较,差异均有统计学意义(P0.05),且CCFES组治疗后的上述各项指标均显著优于NMES组治疗后(P0.05)。经相关性分析,2组患者治疗前、后FMA-UE和FTHUE-HK的差值与IHA值的差值(分别为r=0.472和r=0.429)和患侧半球MEP波幅的差值(分别为r=0.520和r=0.517)呈显著正相关(P0.05)。结论左右制衡机制下CCFES和NMES均可改善脑卒中患者患侧大脑运动皮质兴奋性,恢复左右半球间动态平衡,有效提升其上肢运动功能,且CCFES的疗效优于NMES,而上肢运动功能的改善与患侧半球皮质兴奋性的提高和半球间的不对称性趋向正常化呈正相关。

关键词：脑卒中电刺激皮质兴奋性上肢运动功能左右制衡

Comb-shaped 2-Methylimidazolium Poly(arylene ether sulfone) Anion Exchange Membranes with High Alkaline Stability

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2019年第1期35卷 150-156页

作者： ZHANG Yurong GE Xiaoguang ZHAO Chengji na Hui Alan G.MacDiarmid Institute College of ChemistryJilin UniversityChangchun 130012P.R.China

A series of comb-shaped poly(arylene ether sulfone)s containing pendant 2-methyl-3-alkylimidazolitun group(imPAES-Cx,x=1,6,10)was prepared and characterized as novel anion exchange *** im-PAES-Cx membranes were obtained by benzylic bromination and imidazolium *** characteristic nano-phase separation structure was formed in membranes with longer alkyl side chains,as confmned by small-angle X-ray *** nano-phase separation structures endowed imPAES-Cx membranes with improved ionic conductivity,dimensional stability(at least 60% decrease water uptake and swelling ratio at 60℃)and mechanical properties,together with excellent alkaline ***,imPAES-C6 membranes possessed enhanced hydroxide conductivity and chemical stability *** results suggest that it is a feasible strategy to introduce appropriate length of alkyl side chains into anion exchange membranes(AEMs)to improve the performance.

关键词： Comb-shaped structure:hnidazolittm functionalized poly(arylene ether sulfone) Alkaline stability Membrane