检索结果-南通市图书馆

Design Strategy of Infrared 4-Hydroxybenzylidene-imidazolinone-Type Chromophores based on Intramolecular Charge Transfer:a Theoretical Perspective

引用

化学物理学报(英文) 2023年第5期36卷 582-592,I0002页

作者： Jian Song wenlong liang Shouning Yang Huayan Yang School of Physics Henan Normal UniversityXinxiang 453007China NMPA Key Laboratory for Research and Evaluation of Innovative Drug Henan Key Laboratory of Organic Functional Molecule and Drug InnovationCollaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China

Partial genetically encoded 4-hy-droxybenzylidene-imidazolinone(HBI)-type chromophores are new promising fluorescent probes,which are suitable for imaging and detection of living cells.How-ever,the lack of infrared chro-mophores hinders the develop-ment seriously.Here more than 30 HBI-type chromophores with reg-ular structure modifications were employed and typical spectral redshift change laws and mechanisms were investigated by quantum methods.Results show that both one-photon spectrum(OPS,absorption/emission)and two-photon absorption(TPA)can achieve large redshift via either extending conjugated lengths of frag-3 or enlarging conjugated areas of frag-1 of HBI skeleton.Spectral redshifts of all chromophores are highly related to intramolecular charge transfer(ICT),but neutral ones are closely related to the total ICT or electron-accept-ing-numbers of frag-3,and the high correlative factor of anions is the aromaticity of frag-2 bridge.The frag-2 bridge with high aromaticity can open a reverse charge transfer channel in anion relative to neutral,obtaining significant redshift.Based on analysis,a new 6-hydroxyl-naphthalene-imidazolinone(HNI)series,which have larger conjugated area in frag-1,are pre-dicted.The OPS and TPA of anionic HNI ones acquire about 76−96 nm and 119−146 nm red-shift relative to traditional HBI series respectively as a whole.The longest emission of anionic HNI-4 realizes more 244 nm redshift relative to HBI-1.Our work clarifies worthy spectral reg-ularities and redshift mechanisms of HBI-type chromophores and provides valuable design strategy for infrared chromophores synthesis in experiment.

关键词： Intramolecular charge transfer Near-infrared fluorescent chromophore 4-Hy-droxybenzylidene-imidazolinone One-photon spectrum Two-photon absorption

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

基于RSN-GRU融合网络的锂电池荷电状态估计

引用

华中科技大学学报(自然科学版) 2024年第7期52卷 76-82页

作者：全睿刘品张键梁文龙湖北工业大学太阳能高效利用及储能运行控制湖北省重点实验室湖北工业大学新能源及电网装备安全监测湖北省工程研究中心

为了提高锂电池荷电状态(SOC)估计的精度，提出一种基于残差收缩网络(RSN)与门控循环单元(GRU)并行融合的锂电池SOC估计方法．RSN提取锂电池参数输入序列的局部特征并通过一个小型子网络去除多余的噪声，GRU提取锂电池多参数输入序列的... 详细信息

为了提高锂电池荷电状态(SOC)估计的精度，提出一种基于残差收缩网络(RSN)与门控循环单元(GRU)并行融合的锂电池SOC估计方法．RSN提取锂电池参数输入序列的局部特征并通过一个小型子网络去除多余的噪声，GRU提取锂电池多参数输入序列的时序信息，最终将RSN和GRU进行并行融合得到锂电池的SOC估计值．多种动态工况及不同温度下的实验结果表明：RSN-GRU并行融合网络能显著提高锂电池SOC估计精度，在25℃环境温度下估计结果的平均绝对误差为0.34%，均方根误差为0.51%，比单独的GRU和RSN估计精度分别提升了50%和61.7%．另外，将RSN-GRU与其他多种常用网络进行了对比，结果表明该网络SOC估计精度更高，具有明显的优越性．

关键词：门控循环单元残差收缩网络并行融合网络锂电池荷电状态估计

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Improved VGG Model for Road Traffic Sign Recognition

引用

Computers, Materials & Continua 2018年第10期57卷 11-24页

作者： Shuren Zhou wenlong liang Junguo Li Jeong-Uk Kim Hunan Provincial Key Laboratory of Intelligent Processing of Big Data on Transportation Changsha University of Science&TechnologyChangsha410114China School of Computer&Communication Engineering Changsha University of Science&TechnologyChangsha410114China Department of Energy Grid Sangmyung UniversitySeoul110743Korea

Road traffic sign recognition is an important task in intelligent transportation system.Convolutional neural networks(CNNs)have achieved a breakthrough in computer vision tasks and made great success in traffic sign classification.In this paper,it presents a road traffic sign recognition algorithm based on a convolutional neural network.In natural scenes,traffic signs are disturbed by factors such as illumination,occlusion,missing and deformation,and the accuracy of recognition decreases,this paper proposes a model called Improved VGG(IVGG)inspired by VGG model.The IVGG model includes 9 layers,compared with the original VGG model,it is added max-pooling operation and dropout operation after multiple convolutional layers,to catch the main features and save the training time.The paper proposes the method which adds dropout and Batch Normalization(BN)operations after each fully-connected layer,to further accelerate the model convergence,and then it can get better classification effect.It uses the German Traffic Sign Recognition Benchmark(GTSRB)dataset in the experiment.The IVGG model enhances the recognition rate of traffic signs and robustness by using the data augmentation and transfer learning,and the spent time is also reduced greatly.

关键词： Intelligent transportation traffic sign deep learning GTSRB data augmentation

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

Whether the Microemulsion is a Nano-pesticide: Exploration from the Perspective of Particle Size and Morphology

引用

Plant Diseases and Pests 2022年第6期13卷 19-23页

作者： Jingli CHENG wenlong liang Jiadong ZHANG Qiuyu XIONG Jinhao ZHAO Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang ProvinceZhejiang UniversityHangzhou 310058China

[Objectives] The paper was to explore whether the microemulsion is a nano-pesticide. [Methods] Several microemulsions commonly available on the market were studied from the perspective of particle size and morphological characteristics. With ZIF nano-pesticide prepared earlier as the control, the changes in particle size of microemulsions diluted at different concentrations and the microscopic morphology of dispersed particles were tested and compared by dynamic light scattering laser particle size analyzer combined with scanning electron microscope. [Results] Conventional microemulsions were in dynamic equilibrium, and the particle size changed irregularly after dilution at different concentrations. Especially under scanning electron microscope, the particle distribution of pesticide-bearing droplets were uneven after drying, with aggregation and precipitation of large particles, while the particle size of nano-pesticide changed little after dilution at different concentrations, ranging from 1 to 300 nm. Moreover, the microscopic morphology of nano-pesticide observed under scanning electron microscope was in monodisperse nano state, without aggregation. [Conclusions] The particle size measured by dynamic light scattering alone can not judge whether the microemulsion is a nanometer pesticide, and it is necessary to observe the microscopic disperse state and particle size distribution with the help of electron microscopy.

关键词： Nano-pesticide Microemulsion Particle size distribution Dynamic light scattering Morphology Scanning electron microscope

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

大容积电烤箱内传热过程的反向传播神经网络控制算法

引用

西安交通大学学报 2024年第7期58卷 73-83页

作者：姚青唐巍峰郑鑫王锐梁文龙刘玉贤褚雯霄浙江省健康智慧厨房系统集成重点实验室浙江宁波315336 宁波方太厨具有限公司浙江宁波315336 西安交通大学热流科学与工程教育部重点实验室西安710049

大容积电烤箱内存在严重加热不均匀问题,限制其在商业和家用领域的广泛应用,传统比例-积分-微分(PID)控制算法存在弛豫时间长、温控精度差等问题,导致被加热目标无法维持在最佳烹饪热环境。通过自编程构建了一种反向传播神经网络(BPNN)... 详细信息

大容积电烤箱内存在严重加热不均匀问题,限制其在商业和家用领域的广泛应用,传统比例-积分-微分(PID)控制算法存在弛豫时间长、温控精度差等问题,导致被加热目标无法维持在最佳烹饪热环境。通过自编程构建了一种反向传播神经网络(BPNN)控制策略,以改善大容积电烤箱的加热速率、温控精度及热均匀性为目标,通过局部速度、温度分布与美拉德反应可视化实验测试,探究了风扇转速、对流与辐射加热功率和排气流量等因素的影响。实验结果表明:在提升算法鲁棒性后,BPNN算法对烤箱内温度预测误差显著降低;相比PID控制方法,采用BPNN算法的被加热目标过热度最多降至6℃,温控精度显著提高;被加热目标表面温度的相对极差从54%降至36%,速度相对极差从71.4%下降至39%,均匀性显著增强;电烤箱的加热弛豫时间从230 s降至100 s。BPNN算法能够实现大容积电烤箱更精确、更快速、更均匀的温度控制。

关键词：电烤箱反向传播神经网络对流与辐射热均匀性弛豫时间

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

Disturbances rejection optimization based on improved two-degree-of-freedom LADRC for permanent magnet synchronous motor systems

引用

Defence Technology（防务技术） 2024年第3期33卷 518-531页

作者： Chenggang Wang Jianhu Yan wenlong Li liang Shan Le Sun School of Automation Nanjing University of Science and TechnologyNanjing 210094China

Permanent magnet synchronous motor(PMSM)speed control systems with conventional linear active disturbance rejection control(CLADRC)strategy encounter issues regarding the coupling between dynamic response and disturbance suppression and have poor performance in suppressing complex nonlinear disturbances.In order to address these issues,this paper proposes an improved two-degree-of-freedom LADRC(TDOF-LADRC)strategy,which can enhance the disturbance rejection performance of the system while decoupling entirely the system's dynamic and anti-disturbance performance to boost the system robustness and simplify controller parameter tuning.PMSM models that consider total disturbances are developed to design the TDOF-LADRC speed controller accurately.Moreover,to evaluate the control performance of the TDOF-LADRC strategy,its stability is proven,and the influence of each controller parameter on the system control performance is analyzed.Based on it,a comparison is made between the disturbance observation ability and anti-disturbance performance of TDOF-LADRC and CLADRC to prove the superiority of TDOF-LADRC in rejecting disturbances.Finally,experiments are performed on a 750 W PMSM experimental platform,and the results demonstrate that the proposed TDOF-LADRC exhibits the properties of two degrees of freedom and improves the disturbance rejection performance of the PMSM system.

关键词： Permanent magnet synchronous motor(PMSM) Active disturbance rejection control(ADRC) Disturbance observer Two-degree-of-freedom control Anti-disturbance

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

The activity and immune dynamics of PD-1 inhibition on high-risk pulmonary ground glass opacity lesions:insights from a single-arm,phase II trial

引用

Signal Transduction and Targeted Therapy 2024年第5期9卷 2202-2214页

作者： Bo Cheng Caichen Li Jianfu Li Longlong Gong Peng liang Ying Chen Shuting Zhan Shan Xiong Ran Zhong Hengrui liang Yi Feng Runchen Wang Haixuan Wang Hongbo Zheng Jun Liu Chengzhi Zhou wenlong Shao Yuan Qiu Jiancong Sun Zhanhong Xie Zhu liang Chenglin Yang Xiuyu Cai Chunxia Su Wei Wang Jianxing He Wenhua liang Department of Thoracic Surgery and Oncology the First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou Institute of Respiratory HealthState Key Laboratory of Respiratory DiseaseNational Clinical Research Center for Respiratory DiseaseGuangzhouChina Medical Department Genecast Biotechnology Co.LtdWuxiChina Department of Radiation Oncology the First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina Department of Respiratory Medicine the First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou Institute of Respiratory HealthState Key Laboratory of Respiratory DiseaseNational Clinical Research Center for Respiratory DiseaseGuangzhouChina Department of Cardiothoracic Surgery Affiliated Hospital of Guangdong Medical UniversityZhanjiangChina Department of Thoracic Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital&Shenzhen HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeShenzhenChina Department of VIP Inpatient Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaSun Yat-sen UniversityGuangzhouChina Department of Medical Oncology Shanghai Pulmonary HospitalSchool of MedicineTongji UniversityShanghaiChina

Immune checkpoint inhibitors targeting the programmed cell death-1(PD-1)protein significantly improve survival in patients with advanced non-small-cell lung cancer(NSCLC),but its impact on early-stage ground-glass opacity(GGO)lesions remains unclear.This is a single-arm,phase II trial(NCT04026841)using Simon’s optimal two-stage design,of which 4 doses of sintilimab(200 mg per 3 weeks)were administrated in 36 enrolled multiple primary lung cancer(MPLC)patients with persistent high-risk(Lung-RADS category 4 or had progressed within 6 months)GGOs.The primary endpoint was objective response rate(ORR).T/B/NK-cell subpopulations,TCR-seq,cytokines,exosomal RNA,and multiplexed immunohistochemistry(mIHC)were monitored and compared between responders and non-responders.Finally,two intent-to-treat(ITT)lesions(pure-GGO or GGO-predominant)showed responses(ORR:5.6%,2/36),and no patients had progressive disease(PD).No grade 3-5 TRAEs occurred.The total response rate considering two ITT lesions and three non-intent-to-treat(NITT)lesions(pure-solid or solid-predominant)was 13.9%(5/36).The proportion of CD8^(+)T cells,the ratio of CD8^(+)/CD4^(+),and the TCR clonality value were significantly higher in the peripheral blood of responders before treatment and decreased over time.Correspondingly,the mIHC analysis showed more CD8^(+)T cells infiltrated in responders.Besides,responders’cytokine concentrations of EGF and CTLA-4 increased during treatment.The exosomal expression of fatty acid metabolism and oxidative phosphorylation gene signatures were down-regulated among responders.Collectively,PD-1 inhibitor showed certain activity on high-risk pulmonary GGO lesions without safety concerns.Such effects were associated with specific T-cell re-distribution,EGF/CTLA-4 cytokine compensation,and regulation of metabolism pathways.

关键词： lesions metabolism doses

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

基于人工智能的移动通信传输数据加密系统设计

引用

移动信息 2023年第8期45卷 120-122页

作者：梁文龙湖南信息职业技术学院长沙410200

针对移动通信传输数据量大,传输加密耗时较长的问题,文中设计了一种基于人工智能的移动通信传输数据加密系统。在硬件设计上,选择STM32控制器结合CycloneⅢ加密芯片作为主控制器,利用人工智能算法设计加密/解密方法。在此基础上,结合人... 详细信息

针对移动通信传输数据量大,传输加密耗时较长的问题,文中设计了一种基于人工智能的移动通信传输数据加密系统。在硬件设计上,选择STM32控制器结合CycloneⅢ加密芯片作为主控制器,利用人工智能算法设计加密/解密方法。在此基础上,结合人工智能算法中的改进K-means算法,对移动通信传输数据进行聚类处理,从而实现移动通信传输数据的安全加密。实验测试发现,文中设计的系统传输移动通信数据具有较高的实时性,且丢包率较低,可以保持良好的加密性能。

关键词：人工智能移动通信数据传输信息加密

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

基于云计算的数据隐私保护技术研究

引用

计算机应用文摘 2023年第13期39卷 98-100页

作者：梁文龙湖南信息职业技术学院长沙410200

大数据使云计算成为数据存储和处理的重要途径,但也引发了数据隐私和安全问题。因此,发展基于云计算的数据隐私保护技术是当前研究热点之一。文章进一步开发了包括数据提供者、服务器和用户3部分组成的云架构,并发展了一种apriori算法... 详细信息

大数据使云计算成为数据存储和处理的重要途径,但也引发了数据隐私和安全问题。因此,发展基于云计算的数据隐私保护技术是当前研究热点之一。文章进一步开发了包括数据提供者、服务器和用户3部分组成的云架构,并发展了一种apriori算法来增强加密数据的隐私性、云计算系统的数据保护以及查询隐私功能。最后,为了评估所提出的架构的安全性能,实验使用Windows11操作系统的计算机对不同的最小支持度和数据量做安全评估。测试表明,所提出的算法能为云计算系统提供安全的隐私保护。

关键词：云计算数据隐私 apriori算法相等性测试

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

基于人工智能技术的移动通信网络数据异常识别系统设计

引用

计算机应用文摘 2023年第14期39卷 37-39页

作者：梁文龙湖南信息职业技术学院长沙410200

移动通信网络数据的异常识别可以有效保证移动通信网络的安全运行,为提高移动通信网络数据的异常识别准确性,设计了一种基于人工智能技术的移动通信网络数据异常识别系统。首先对采集到的移动通信网络数据进行预处理,然后利用人工智能... 详细信息

移动通信网络数据的异常识别可以有效保证移动通信网络的安全运行,为提高移动通信网络数据的异常识别准确性,设计了一种基于人工智能技术的移动通信网络数据异常识别系统。首先对采集到的移动通信网络数据进行预处理,然后利用人工智能技术中的深度学习方法对移动通信网络数据进行聚类处理,最后利用神经网络方法实现移动通信网络数据的异常识别。实验发现该系统具有良好的异常识别性能,在保证移动通信网络数据传输速率的基础上,具有较高的异常识别准确率和较短的响应耗时,具有一定的应用价值。

关键词：人工智能技术移动通信系统设计网络数据异常识别

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

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：