检索结果-南通市图书馆

Multiple-dimensioned defect engineering for graphite felt electrode of vanadium redox flow battery

Carbon Energy 2024年第2期6卷 143-153页

作者： Yingqiao Jiang Yinhui Wang Gang Cheng yuehua li Lei Dai Jing Zhu Wei Meng Jingyu Xi ling Wang Zhangxing He School of Chemical Engineering North China University of Science and TechnologyTangshanChina Tsinghua Shenzhen International Graduate School Institute of Materials ResearchTsinghua UniversityShenzhenChina

The scarcity of wettability,insufficient active sites,and low surface area of graphite felt(GF)have long been suppressing the performance of vanadium redox flow batteries(VRFBs).Herein,an ultra-homogeneous multipledimensioned defect,including nano-scale etching and atomic-scale N,O codoping,was used to modify GF by the molten salt system.NH_(4)Cl and KClO_(3) were added simultaneously to the system to obtain porous N/O co-doped electrode(GF/ON),where KClO_(3) was used to ultra-homogeneously etch,and O-functionalize electrode,and NH4Cl was used as N dopant,respectively.GF/ON presents better electrochemical catalysis for VO_(2)+/VO_(2)+ and V3+/V2+ reactions than only O-functionalized electrodes(GF/O)and GF.The enhanced electrochemical properties are attributed to an increase in active sites,surface area,and wettability,as well as the synergistic effect of N and O,which is also supported by the density functional theory calculations.Further,the cell using GF/ON shows higher discharge capacity,energy efficiency,and stability for cycling performance than the pristine cell at 140 mA cm^(−2) for 200 cycles.Moreover,the energy efficiency of the modified cell is increased by 9.7% from 55.2% for the pristine cell at 260 mA cm^(−2).Such an ultra-homogeneous etching with N and O co-doping through“boiling”molten salt medium provides an effective and practical application potential way to prepare superior electrodes for VRFB.

关键词： graphite felt molten salt N O co-doping ultra-homogeneous etching vanadium redox flow battery

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

A Civil Aviation Customer Service Ontology and Its Applications

引用

Data Intelligence 2023年第4期5卷 1063-1081页

作者： Meixiang Lv Xudong Cao Tianxing Wu yuehua li School of Computer Science and Engineering Southeast UniversityNanjingChina Key Laboratory of New Generation Artificial Intelligence Technology and Its Interdisciplinary Applications(Southeast University) Ministry of EducationChina Zhejiang Lab HangzhouChina

In the process of developing the C919 large aircraft customer service intelligence system,we find that heterogeneous and incomplete data cause the inefficient and inaccurate decision making.Thus,to solve this problem,we propose to introduce the idea of ontology modeling and reasoning into competitive intelligence system building in this paper.We first present the building principles and methods of the civil aviation customer service ontology.We then define the classes and properties to contribute a real-world civil aviation customer service ontology,which is published on the Web(http:/***/dataset/cacso).We finally design SWRL rules corresponding to different intelligence analysis targets to support reasoning in our designed competitive intelligence system.

关键词： Ontology Building Intelligence Service Civil Aviation Customer Service

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

Heat shock protein 72 confers protection in retinal ganglion cells and lateral geniculate nucleus neurons via blockade of the SAPK/JNK pathway in a chronic ocular-hypertensive rat model

引用

Neural Regeneration Research 2014年第14期9卷 1395-1401页

作者： Ning li yuehua li Xuanchu Duan Department of Ophthalmology The First Affiliated Hospital of Anhui Medical University Department of Ophthalmology Second Xiangya HospitalCentral South University

Optic nerve transection increased the expression of heat shock protein 72 （HSP72） in the lateral geniculate body, indicating that this protein is involved in the prevention of neuronal injury. Zinc sulfate and quercetin induced and inhibited the expression of HSP72, respectively. Intraperitoneal injections of zinc sulfate, SP600125 （c-Jun N-terminal kinase inhibitor）, or quercetin were performed on retinal ganglion cells in a Wistar rat model of chronic ocular hypertension. Our results showed that compared with the control group, the expression of HSP72 in retinal ganglion cells and the lateral geniculate body was increased after the injection of zinc sulfate, but was decreased after the injection of quercetin. The expression of phosphorylated c-Jun N-terminal kinases and phosphorylated c-Jun were visible 3 days after injection in the control group, and reached apeak at 7 days. Zinc sulfate and SP600125 significantly decreased the expression of p-c-Jun, whereas quercetin significantly enhanced the expression of this protein. These results suggest that HSP72 protects retinal ganglion cells and lateral geniculate body in a rat model of chronic ocular hypertension from injury by blocking the activation of the stress-activated kinase/c-Jun N-terminal kinase apoptotic pathway.

关键词： nerve regeneration peripheral nerve injury glaucoma heat shock protein 72 retinalganglion cells lateral geniculate body zinc sulfate quercetin SAPK/JNK pathway neuroprotection p-INK p-c-Jun NSFC grant neural regeneration

来源：

维普期刊数据库

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

高精地图道路交叉口拓扑连接问题的分析方法与实践

引用

测绘通报 2024年第4期 150-155页

作者：李月华北京华为数字技术有限公司北京100095

随着高精度地图数据在自动驾驶行业中的广泛应用,针对自动驾驶行业高精度地图道路交叉口在应用过程中存在拓扑连接的问题,本文结合自动驾驶项目,提出了一种基于不同道路场景特征快速发现道路交叉口拓扑连接问题的逻辑算法。采用道路交... 详细信息

随着高精度地图数据在自动驾驶行业中的广泛应用,针对自动驾驶行业高精度地图道路交叉口在应用过程中存在拓扑连接的问题,本文结合自动驾驶项目,提出了一种基于不同道路场景特征快速发现道路交叉口拓扑连接问题的逻辑算法。采用道路交叉口内部连接算法,能较好地识别出道路交叉口各类遗漏连接的场景,实现了对大部分场景的有效识别和防护。基于几个城市地图数据的试验结果表明,本文的逻辑算法不仅可以快速有效地挖掘出道路交叉口内拓扑连接问题,还能提前识别出试验室仿真和实车测试因为拓扑连接问题造成的地图断点问题。研究结果可以应用到自动驾驶领域的地图质检、仿真、测试等工序内,减少了自动驾驶降级次数,提升了用户体验,对后续自动驾驶道路交叉路口技术改进和感知能力提升有一定的借鉴意义。

关键词：高精度地图 HD和SD融合关系道路交叉口地图匹配拓扑连接

来源：

维普期刊数据库

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

History and prospect of melanocytic nevus treatment:A bibliometric analysis

引用

Chinese Journal Of Plastic and Reconstructive Surgery 2023年第4期5卷 163-172页

作者： Zizhen Guo lingling Ge yuehua li Yihui Gu Wei Wang Chengjiang Wei Bin Gu Qingfeng li Zhichao Wang Department of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China

Background:Melanocytic nevus is mainly treated by complete or partial removal.However,predicting the risk of malignant transformation of melanocytic nevi and which treatment patients should receive,surgical or nonsurgical management,to gain the best results and aesthetic outcomes is controversial.Methods:Global literature on melanocytic nevus treatment,published between 1997 and 2022,was scanned using the Web of Science Core Collection database.Microsoft Office Excel,CiteSpace V,VOSviewer,Scimago Graphica,Bibliometrix,and Biblioshiny packages in R were used for the bibliometric analysis to summarize the leading countries,institutions,professors,and research trends in this field.Results:This study included 1723 articles.Publications and citations exhibited positive trends over the past 20 years.The United States had the most productive organizations and publications in the comprehensive worldwide cooperation network,and China was recently one of the most active major participants.Professor Giovanni Pellacani,whose H-index,G-index,and M-index ranked first in this field,founded a virtual biopsy using reflectance confocal microscopy.In addition,Krengel and Kinsler contributed significantly to diagnosing and treating melanocytic nevi.The top 25 keywords in recent years were mostly about the mechanisms and risk factors for the malignant transformation of nevi.Conclusion:The future trend for melanocytic nevi treatment is to specify genotype-phenotype and genotypeoutcome correlations,choose proper therapy to reduce the risk of malignant transformation,and simultaneously achieve the best aesthetic outcomes.

关键词： Bibliometrics Nevus Pigmented Genotype Phenotype

来源：

维普期刊数据库

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

Reliability analysis of slopes considering spatial variability of soil properties based on efficiently identified representative slip surfaces

引用

Journal of Rock Mechanics and Geotechnical Engineering 2020年第3期12卷 642-655页

作者： Bin Wang Leilei liu yuehua li Quan Jiang State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China University of Chinese Academy of Sciences Beijing100049China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of EducationSchool of Geosciences and Info-PhysicsCentral South UniversityChangsha410083China Hunan Key Laboratory of Nonferrous Resources and Geological Hazards Exploration Changsha410083China School of Geosciences and Info-Physics Central South UniversityChangsha410083China

Slope reliability analysis considering inherent spatial variability(ISV)of soil properties is timeconsuming when response surface method(RSM)is used,because of the"curse of dimensionality".This paper proposes an effective method for identification of representative slip surfaces(RSSs)of slopes with spatially varied soils within the framework of limit equilibrium method(LEM),which utilizes an adaptive K-means clustering approach.Then,an improved slope reliability analysis based on the RSSs and RSM considering soil spatial variability,in perspective of computation efficiency,is established.The detailed implementation procedure of the proposed method is well documented,and the ability of the method in identifying RSSs and estimating reliability is investigated via three slope examples.Results show that the proposed method can automatically identify the RSSs of slope with only one evaluation of the conventional deterministic slope stability model.The RSSs are invariant with the statistics of soil properties,which allows parametric studies that are often required in slope reliability analysis to be efficiently achieved with ease.It is also found that the proposed method provides comparable values of factor of safety(FS)and probability of failure(Pf)of slopes with those obtained from direct analysis and lite rature.

关键词： Slope reliability analysis Spatial variability Representative slip surfaces(RSSs) Response surface method(RSM) Random field simulation

来源：

维普期刊数据库

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

TIR/BB-loop mimetic AS-1 protects vascular endothelial cells from injury induced by hypoxia/reoxygenation

引用

The Journal of Biomedical Research 2020年第5期34卷 343-350,I0001页

作者： Zhijia Zhang Yuxing Hou Jiantao li Chao Tang linli Que Qian Tan yuehua li Department of Pathophysiology Nanjing Medical UniversityNanjingJiangsu 211166China Department of Plasticsurgery Drum Tower HospitalNanjingJiangsu 211100China.

Morphological and functional abnormalities of vascular endothelial cells(VECs) are risk factors of ischemiareperfusion in skin flaps.Signaling pathway mediated by interleukin-1 receptor(IL-1 R) is essential to hypoxia/reoxygenation(H/R) injury of VECs.While the TIR/BB-loop mimetic(AS-1) disrupts the interaction between IL-1 R and myeloid differentiation primary-response protein 88(MyD88),its role in the VECs dysfunction under H/R is unclear.In this study,we first showed that there was an infiltration of inflammatory cells and the apoptosis of VECs by using a skin flap section from patients who received flap transplantation.We then showed that the H/R treatment induced apoptosis and loss of cell migration of endothelial cell line H926 were attenuated by AS-1.Furthermore,our data suggested that AS-1 inhibits the interaction between IL-1 R and MyD88,and subsequent phosphorylation of IκB and p38 pathway,as well as the nuclear localization of NF-κB subunit p65/p50.Thus,this study indicated that the protective role of AS-1 in H/R induced cellular injury may be due to the AS-1 mediated down-regulation of IL-1 R signaling pathway.

关键词： AS-1 vascular endothelial cells hypoxia/reoxygenation IL-1R NF-κB MAPK

来源：

维普期刊数据库

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

比较基于CT图像的纹理分析与临床评分在预测急性缺血性脑卒中出血性转化中的价值

引用

介入放射学杂志 2024年第3期33卷 230-235页

作者：宋心雨孙正李跃华上海交通大学医学院附属第六人民医院放射介入科上海2002333

目的本研究试图利用CT图像的纹理特征预测缺血性脑卒中出血性转化(hemorrhagic transformation,HT)的发生,并与传统的临床预测评分进行比较。方法本研究共纳入73例急性前循环缺血性脑卒中患者,所有患者都进行再灌注治疗。根据随访ADC图... 详细信息

目的本研究试图利用CT图像的纹理特征预测缺血性脑卒中出血性转化(hemorrhagic transformation,HT)的发生,并与传统的临床预测评分进行比较。方法本研究共纳入73例急性前循环缺血性脑卒中患者,所有患者都进行再灌注治疗。根据随访ADC图像弥散受限区勾画出梗死区感兴趣区域(region of interesting,ROI),并匹配到计算机断层血管造影(computed tomographic angiography,CTA)和平扫CT(non-contrast CT,NCCT)相应的缺血区域。在所有患者中随机抽取5个HT和5个非HT组成测试组,余下组成训练组。分别在CTA和NCCT训练组中选取最有预测价值的6个纹理特征,然后将这些特征带入不同分类器进行5倍交叉验证训练,最后根据训练后的分类器对测试组进行预测评估。此外,对所有训练组患者进行4项临床评分(HAT、SEDAN、HIAT2、THRIVE-c)。结果训练后的分类器模型在CTA和NCCT中都表现出明显的预测价值。在CTA预测模型中,线性支持向量机(linear SVM)分类器预测效能最好,其在5倍交叉验证中的平均预测准确度为0.816,AUC值为0.890;在测试组中预测准确度为0.800,敏感性为0.600,特异性为1.000。逻辑回归(logistic regression,LR)为NCCT中表现最好的分类器,但NCCT模型HT的预测性能稍逊于CTA模型,其在训练组中预测准确度为0.697,AUC值为0.763。NCCT测试组的预测准确度为0.700,敏感性为0.600,特异性为0.800。相比于纹理分析模型,4种临床评分预测表现较差,AUC值均小于0.700。结论基于CT图像脑缺血区的纹理分析(CTA和NCCT)具有预测AIS患者再灌注治疗后HT的能力,预测效能优于传统的临床评分方法。

关键词：缺血性脑卒中出血性转化纹理分析临床评分预测

来源：

维普期刊数据库

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

Overexpression of angiopoietin-1 reduces doxorubicin-induced apoptosis in cardiomyocytes

引用

The Journal of Biomedical Research 2012年第6期26卷 432-438页

作者： Danyang Ren Quan Zhu Jiantao li Tuanzhu Ha Xiaohui Wan yuehua li Department of Pathophysiology Nanjing Medical University Nanjing Jiangsu 210029 China Department of Thoracic & Cardiovascular Surgery the First Affiliated Hospital Nanjing Medical University Nanjing Jiangsu 210029 China Department of Surgery James H. Quillen College of Medicine East Tennessee State University Johnson City TN 37614 USA

Doxorubicin （Dox） is a major anticancer chemotherapeutic agent. However, it causes cardiomyopathy due to the side effect of cardiomyocyte apoptosis. We have previously reported that angiopoietin-1 significantly reduced myocardial infarction after ischemic injury and protected cardiomyocytes from oxidative stress-induced apoptosis. It is hypothesized that angiopoietin-1 may protect cardiomyocytes from Dox-induced apoptosis. Cardiomyocytes H9C2 were transfected with adenovirus expressing angiopoietin-1 （Ad5-Ang-1） 24 h before the cells were chal- lenged with Dox at a concentration of 2 ~tmol/L. Ad5-GFP served as the vector control. Cardiomyocyte apoptosis was evaluated using Annexin V-FITC staining and caspase-3 and caspase-8 activity was determined by Western blotting. The results showed that Dox treatment significantly induced cardiomyocyte apoptosis as evidenced by the greater number of Annexin V-FITC stained cells and increases in caspase-3 and caspase-8 activity. In contrast, overexpression of angiopoietin-1 significantly prevented Dox-induced cardiomyocyte apoptosis. To elucidate the mechanisms by which angiopoietin-1 protected cells from Dox-induced apoptosis, we analyzed both extrinsic and intrinsic apoptotic signaling pathways. We observed that angiopoietin-1 prevented Dox-induced activation of both extrinsic and intrinsic apoptotic signaling pathways. Specifically, angiopoietin-1 prevented DOX-induced in- creases in FasL and Bax levels and cleaved caspase-3 and caspase-8 levels in H9C2 cells. In addition, overexpres- sion of angiopoietin-1 also activated the pro-survival phosphoinositide-3 kinase （PI3K）/Akt signaling pathway and decreased Dox-induced nuclear factor-kappaB （NF-~：B） activation. Our data suggest that promoting the expression of angiopoietin-1 could be a potential approach for reducing Dox-induced cardiomyocyte cytoxicity.

关键词： cardiomyocyte doxorubicin apoptosis angiopoietin-1 phosphoinositide-3 kinase （PI3K） nuclearfactor-kappaB （NF-kB）

来源：

维普期刊数据库

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

基于改进YOLOv5s的着装不规范检测算法研究

引用

图学学报 2024年第3期45卷 433-445页

作者：李跃华仲新姚章燕胡彬南通大学信息科学技术学院江苏南通226000

针对餐饮后厨工作人员着装不规范,在复杂背景下采用现有算法检测精度低且易出现误检、漏检等问题,提出一种基于YOLOv5s的着装规范检测改进算法YOLOv5s-ESW。首先,在主干网络引入新型多尺度注意力机制改进C3模块,增强网络的特征提取能力... 详细信息

针对餐饮后厨工作人员着装不规范,在复杂背景下采用现有算法检测精度低且易出现误检、漏检等问题,提出一种基于YOLOv5s的着装规范检测改进算法YOLOv5s-ESW。首先,在主干网络引入新型多尺度注意力机制改进C3模块,增强网络的特征提取能力;其次,在颈部网络中采用空间和通道重建卷积模块(SCConv)替换原始网络中的卷积模块(Conv),减少模型参数冗余,同时提升模型的精度;最后,在预测部分引入WIoU损失函数更换CIoU损失函数,提高模型泛化能力,加快收敛速度。将改进算法应用到自建餐饮后厨工作人员着装数据集中进行实验,实验表明,改进后的模型检测平均精度提升了4.1%,参数量减少了11.4%。该模型在提高了检测精度的同时降低了网络复杂度,能够满足餐饮后厨工作人员的着装规范检测的要求。

关键词：着装规范检测注意力机制卷积损失函数 YOLOv5s-ESW算法

来源：

维普期刊数据库

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：