检索结果-内蒙古大学图书馆

N-succinyl-chitosan as ecofriendly pesticide carriers: Nano encapsulation and synergistic antifungal effect on 4-hydroxyphenyl-2-propenyl-1-one derivatives based on chalcone structure

引用

Journal of Advanced research 2024年 71卷 55-65页

作者： Xia, Zhi Zhou, Qing Zhang, Yu Zhang, Tao Xue, Wei National Key Laboratory of Green Pesticide Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Center for R&D of Fine Chemicals of Guizhou University Guiyang 550025 China College of Chemistry and Chemical Engineering Guizhou University of Engineering Science Bijie 551700 China

Introduction: Traditional pesticides have poor-water solubility, high toxicity and low bioavailability. Therefore, it is of great significance for the sustainable and healthy development of the pesticide industry to develop efficient and ecofriendly new chemical pesticide products and formulations. Objectives: This study aims to synthesize a series of derivatives based on chalcone structure (HPPO), and then use the amphiphilic and self-assembly characteristics of N-succinyl-chitosan (NSCS) to prepare HPPO@NSCS nanoparticles (HPPO@NSCS NPs) in order to realize the green application of HPPO, and investigate the antifungal activity and mechanisms of HPPO@NSCS NPs. Methods: NSCS was synthesized by structural modification using chitosan as the carrier. Based on its amphiphilic and self-assembly characteristics, HPPO-16@NSCS NPs were reasonably prepared by combining with active small molecule HPPO-16. Fourier transform infrared spectroscopy (FTIr), transmission electron microscopy (TEM), dynamic light scattering (dLS), fluorescence spectroscopy (FS) and high-performance liquid chromatography (HPLC) were used to characterize the physicochemical properties of NSCS and HPPO-16@NSCS NPs. The inhibitory activity of nanopesticides against rhizoctonia solani (r. solani) was tested in vivo and in vitro. The mechanism of antifungal action was discussed from the observation of pathogen morphology, fluorescence staining and enzyme activity determination. results: 28 small molecules based on chalcone structure (HPPO-1-28), NSCS and HPPO-16@NSCS were successfully synthesized. The application of HPPO-16@NSCS could impair the development, cell structure, cellular energy utilization, and metabolism pathways of the fungi. The protective effects of HPPO-16@NSCS NPs on rice leaves and leaf sheaths were 80.9 and 76.1 %, respectively, which were better than those of azoxystrobin. Conclusion: This study reveals that these simple chalcone derivatives can be further explored as viable antibacter

关键词： Chalcone derivatives Ecofriendly Encapsulation N-succinyl-chitosan Synergistic antifungal

来源：评论

学校读者我要写书评

暂无评论

Semi-supervised detection of Contaminated Business Process Instances using Graph Autoencoders and dynamic Edge Convolutions for BPM Anomaly detection

Semi-supervised Detection of Contaminated Business Process I...

引用

2024 Innovations in Intelligent Systems and Applications Conference, ASYU 2024

作者： Ayaz, Teoman Berkay Gülce, Ege Özcan, Alper Akbulut, Akhan R&D Center of Next4Biz Sahrayicedit Mah Pakpen Plaza No:40/4 Istanbul34734 Turkey Department of Computer Engineering Akdeniz University Antalya Turkey Department of Computer Engineering Istanbul Kültür University Istanbul34536 Turkey

ISBN: (纸本)9798350379433

Anomalies in business processes pose a significant threat to the operational performance of modern enterprises. Consequently, detecting these anomalies in business process management (BPM) systems is a critical task for organizations. However, the inherent complexity of business processes and the limited availability of labeled data compound this challenge. In this study, we introduce innovative models that leverage graph representations of business process data, incorporating an unsupervised neural network architecture known as Graph Autoencoders combined with dynamic Edge Conditioned Convolutions to enhance learning on edge attributes. Additionally, we propose a novel metric for evaluating autoencoder performance. We developed two models: a fully unsupervised model trained on the entire dataset and a semi-supervised model that refines the initial model's outputs. Our empirical results demonstrate that the unsupervised model achieves a maximum F1-score of 0.82 and a success rate of 74.11% at the 80th percentile threshold for detecting anomalous sub-sequences in business processes. The semi-supervised model, which builds on the unsupervised model's findings, achieves a maximum F1-score of 0.89 and a success rate of 80.50%, indicating a substantial performance improvement. Both models offer promising capabilities for automating anomaly detection in BPM systems. © 2024 IEEE.

关键词： Graph neural networks

来源：评论

学校读者我要写书评

暂无评论

research on Smart Photovoltaic Power Station Control System Based on dCS Architecture

Research on Smart Photovoltaic Power Station Control System ...

引用

2024 International Conference on Computer Communication, Networks and Information Science, CCNIS 2024

作者： Zhan, Lei Chn Energy Zhishen Control Technology Co. Ltd. Beijing Engineering Research Center of Power Station Automation State R&D Center of Control System and Information Security Technologies for Energy Industry Beijing102211 China

ISBN: (纸本)9798331507046

Aiming at the operation and maintenance management and control issues of large-scale photovoltaic power stations, a smart photovoltaic power station control system based on dCS architecture was studied. In terms of system architecture design, the design idea based on the 'cloud-edge-end' architecture is adopted, and some core equipment and data storage devices in the site are placed in the cloud to achieve centralized management and storage of data. At the same time, some computationally intensive tasks are processed in the cloud to reduce the computing pressure on edge devices. Applying this system to the control of photovoltaic power plants can achieve precise control of operation and maintenance data, and enable the identification and accurate processing of different faults. Comparing the fault identification algorithm used in this system with other algorithms, the results prove that the fault identification accuracy of this algorithm can reach 100℅, creating a large amount of economic benefits for the stable operation of photovoltaic power plants. © 2024 IEEE.

关键词： Ferroelectric rAM

来源：评论

学校读者我要写书评

暂无评论

Edge Information Assisted decoder for Business Process Anomaly detection 8

Edge Information Assisted Decoder for Business Process Anoma...

引用

8th International Artificial Intelligence and data Processing Symposium, IdAP 2024

作者： Ayaz, Teoman Berkay Ozcan, Alper Akbulut, Akhan Akdeniz University Department of Computer Engineering Antalya Turkey R&d Center of Next4biz Sahrayicedit Mah Pakpen Plaza No:40/4 Istanbul34734 Turkey Istanbul Kültür University Department of Computer Engineering Istanbul34536 Turkey

ISBN: (纸本)9798331531492

Anomaly detection as a subject focuses on the identification of data point which significantly deviate from what is the norm or the standard of the dataset. This gives anomaly detection a wide range of applications where the detection of irregularities is often times of crucial importance such as Business Process Management (BPM). In this study we present a novel type of decoder referred to as 'Edge Information Assisted decoder' (EIAd), working on graph data to incorporate edge indexes and attributes into the decoding to achieve improved anomaly detection. We tested a total of 8 encoder-decoder combinations to comparatively evaluate them and prove the effectiveness of the proposed method. The proposed method and the best encoder-decoder combination, the graph attention network (GAT) encoder and the edge-conditioned convolution (ECC) decoder yielded an increase of 0.31 in F1-score from 0.32 to 0.63 when compared to the baseline multi-layer perceptron (MLP) decoder model, both with the optimal optimizer. The empirical results show that the proposed approach has a potential to improve graph based anomaly detection. © 2024 IEEE.

关键词： Graph neural networks

来源：评论

学校读者我要写书评

暂无评论

Fast Square root Calculation without division for High Performance Control Systems of Power Electronics

引用

CES Transactions on Electrical Machines and Systems 2022年第2期6卷 145-152页

作者： Anton dianov Alecksey Anuchin Alexey Bodrov Daeyoung R&D center 16954YonginKorea National Research University“Moscow Power Engineering Institute” 111250MoscowRussia School of Engineering the University of ManchesterManchesterUK

The calculation of square roots is a frequently used operation in control systems of power electronics for different applications:motor drives,power converters,*** the same time,the execution of this procedure significantly loads microcontrollers and uses its power,which can be utilized for performing other important ***,it restricts the size of code,which can be processed by the microcontroller and compels developers to limit the number of functions,or to decrease execution frequency of a ***,the calculation of square roots is a bottle-neck in implementation of high-performance control systems,thus effective optimization of this task is extremely important in modern and efficient *** respect that many applications do not need precise calculation of square roots,the optimization of execution time can be achieved by decreasing of precision of the *** proposed technique is based on the approximation of parabola with hyperbola,which allows you to rapidly find the approximate value of a square *** into account that many digital signal processors(dSP)are not equipped with an effective divider,the developed algorithm does not use divisions,so it can be executed *** payback for this optimization is approximation error with a maximum of 0.5%,however,it is acceptable for the overwhelming majority of control systems.

关键词： Approximate computing Approximation algorithms Newton method Numerical methods

来源：评论

学校读者我要写书评

暂无评论

Estimation of AC Breakdown Strength of Epoxy/TiO2Nanocomposite using Electron Avalanche Breakdown Model

Estimation of AC Breakdown Strength of Epoxy/TiO2Nanocomposi...

引用

2022 IEEE International Conference on High Voltage engineering and Applications, ICHVE 2022

作者： Tagawa, Kazuma Kurimoto, Muneaki Sawada, Toru Yoshida, Shigeyoshi Umemoto, Takahiro Mabuchi, Takahiro Muto, Hirotaka Nagoya University Department of Engineering Japan Advanced Technology R&d Center Mitsubishi Electric Corporation Japan

ISBN: (数字)9781665407502

ISBN: (纸本)9781665407502

Large agglomerates are dielectric defects in nanocomposites, which are polymer matrix added nanoparticles. However, a method for quantifying the critical agglomerate size to improve the dielectric breakdown strength of nanocomposites has not yet been established. In this study, the dependence of the AC breakdown strength on the agglomerate size of epoxy/TiO2 NC is estimated using an electron avalanche breakdown model. © 2022 IEEE.

关键词： Nanocomposites

来源：评论

学校读者我要写书评

暂无评论

A low-cost in-situ CO_(2) sensor based on a membrane and NdIr for long-term measurement in seawater

引用

Journal of Oceanology and Limnology 2022年第3期40卷 986-998页

作者： Meng LI Baolu dU Jinjia GUO Zhihao ZHANG Zeyu LU rong’er ZHENG College of Information Science and Engineering Ocean University of ChinaQingdao 266100China R&D Center for Marine Instruments and Apparatuses Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

The multi-point simultaneous long-term measurement of CO_(2) concentration in seawater can provide more-valuable data for further understanding of the spatial and temporal distribution of CO_(2).Thus,the requirement for a low-cost sensor with high precision,low power consumption,and a small size is becoming *** this work,an in-situ sensor for CO_(2) detection in seawater,based on a permeable membrane and non-dispersive infrared(NdIr)technology,is *** sensor has a small size(Ф66 mm×124 mm),light weight(0.7 kg in air),low power consumption(<0.9 W),low cost(d high-pressure tolerance(<200 m).After laboratory performance tests,the sensor was found to have a measurement range of(0–2000)×10^(-6),and the gas linear correlation r^(2) is 0.99,with a precision of about 0.98%at a sampling rate of 1 s.A comparison measurement was carried out with a commercial sensor in a pool for 7 days,and the results showed a consistent ***,the newly developed sensor was deployed in Qingdao nearshore water for 35 *** results proved that the sensor could measure the dynamic changes of CO_(2) concentration in seawater continuously,and had the potential to carry out long-term observations on an oceanic *** is hoped that the sensor could be applied to field ocean observations in near future.

关键词： in-situ sensor dissolved CO_(2) long-term measurement permeable membrane non-dispersive infrared(NdIr) low-cost

来源：评论

学校读者我要写书评

暂无评论

Analysis of External Excited Synchronous Machine for EV Traction Considering Maximum Efficiency Control

Analysis of External Excited Synchronous Machine for EV Trac...

引用

2023 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2023

作者： Lee, Byeong-Hwa Jung, Jae-Woo Korea Automotive Technology Institute Vehicle Electrification R&d Center Daegu Korea Republic of Daegu University Dept. of Electric Engineering Gyeongsan Korea Republic of

ISBN: (纸本)9798350314274

This paper deals with the comparison of efficiency maps according to the initial design and control method of EESM for driving electric vehicles. In order to verify the effect of the maximum efficiency control proposed in this paper, an initial EESM model that satisfies the performance of the existing IPMSM is designed. Then, the efficiency map is calculated by applying the Maximum torque per Ampere control and maximum efficiency control to the d- and q-axis equivalent circuit analysis, respectively. The effectiveness of the maximum efficiency control presented in this paper was verified by comparing the efficiency maps for each control method. © 2023 IEEE.

关键词： Equivalent circuits

来源：评论

学校读者我要写书评

暂无评论

High-Speed Wafer Temperature Control Approach of Step Chiller for Semiconductor Manufacturing Equipment 49

High-Speed Wafer Temperature Control Approach of Step Chille...

引用

49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023

作者： Yun, Hyeonjun Kwon, Hyeseon Yeh, Sangsu Lee, Minsu Kim, Jonghwa Kim, Yunha Cha, Seungwoo Kang, Mingu Nam, Jooyeop Samsung Electronics Mechatronics R&d Center Hwaseong-si Korea Republic of Korea Advanced Institute of Science and Technology Department of Mechanical Engineering Daejeon Korea Republic of

ISBN: (纸本)9798350331820

As the complexity of semiconductor manufacturing processes increases, various temperature control conditions are required to ensure the etching of various materials is optimized. Fast and precise temperature control is a key factor in the semiconductor production throughput and yield, making the development of a step chiller essential. This chiller mixes hot and cold coolants from two sources, enabling faster cooling/heating than can be achieved from a single source. In this paper, we propose a system identification and control strategy that can maximize the performance of step chillers for semiconductor production equipment, focusing on both speed and accuracy aspects. An approach of model reduction is utilized to transform the highly nonlinear time-varying delay system of the chiller into a linear time-invariant delay system. We then outline a model-based feedforward/feedback controller based on delay system control theory, and conclude with an experimental result demonstrating the effectiveness of the proposed control algorithm. © 2023 IEEE.

关键词： Mixing

来源：评论

学校读者我要写书评

暂无评论

detection of defects on Highways Followed by Logistics Transport Trucks with deep Learning and Providing Safe driving Support for drivers

Detection of Defects on Highways Followed by Logistics Trans...

引用

2023 Innovations in Intelligent Systems and Applications Conference, ASYU 2023

作者： Cil, Ibrahim Sogukcesme, Kemal Zereyalp, Selcuk Erginli, Mustafa Sakarya University Department of Industrial Engineering Sakarya Turkey Sertrans R&d Center İstanbul Turkey Dumlupinar University Simav Vocational School Kütahya Turkey

ISBN: (纸本)9798350306590

Highway infrastructure is of vital importance in providing safe and efficient transportation. However, highway imperfections such as cracks, potholes and uneven surfaces can pose significant driver risks. In this study, we developed a method based on deep learning using machine vision to detect highway defects on the highway. The images used in the study are taken with a camera from the highway and these images are processed with image processing methods. The processed images are given as input to MobileNet, where MobileNet is a deep learning model that classifies images. Transfer learning was used during the training of MobileNet. The pre-processed image supplied to MobileNet is divided by the model into three groups as good, poor, and very poor. The route is recommended to the driver according to these classes. In order to train the MobileNet model, datasets in the literature dataset collected by our trucks., and datasets created by data augmentation methods were used. The MobileNet, which was customized in this study with the tests performed, detects highway defects in 0.054 seconds and classifies the results. Thanks to these classifications, truck drivers are warned and decision support is provided. © 2023 IEEE.

关键词： defects

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：