检索结果-内蒙古大学图书馆

2023 IEEE International Conference on Applied Superconductivity and Electromagnetic devices, ASEMd 2023

作者： Shen, Boyang Chen, Yu Fu, Lin Xu, Junqi Chen, Xiaohong Zhang, Mingshun Tongji University Institute of Rail Transit and Maglev Transportation Engineering R&d Center Shanghai China Sichuan University College of Electrical Engineering Sichuan Chengdu China

ISBN: (纸本)9798350301571

Transportation system always needs high-quality electric energy to ensure safe operation, particularly for the railway transportation. Clean energy, such as wind power and solar power, will highly involve into transportation system in the near future. However, these clean energy technologies have problems of intermittence and instability. A hybrid energy compensation scheme using superconducting magnetic energy storage (SMES) and lithium battery is introduced to support the railway system with reliable electric energy system. © 2023 IEEE.

关键词： railway renewable energy superconducting magnetic energy storage (SMES) transportation

来源：评论

学校读者我要写书评

暂无评论

Model Predictive Control of an Electromagnetic Levitation System of a Maglev Train Considering State Constraints

Model Predictive Control of an Electromagnetic Levitation Sy...

引用

2023 IEEE International Conference on Predictive Control of Electrical drives and Power Electronics, PrECEdE 2023

作者： He, Zhenyu Sun, Yougang Li, Fengxing Zhang, dandan Lin, Guobin Institute of Rail Transit Tongji University Shanghai China National Maglev Transportation Engineering R&D Center Tongji University Shanghai China

ISBN: (纸本)9798350396867

The EMS maglev train is currently the only maglev system that has been commercially operated, and its levitation system has multiple constraints. Traditional control algorithms struggle to handle system constraints, resulting in triggering constraint boundaries and degrading operational quality. In order to solve the above problems, a levitation predictive control method based on nonlinear model is designed to achieve stable levitation under the premise of multiple constraints of levitation system. Firstly, the dynamic model of the single-point levitation system is established, and then the model is simplified, and the predictive control design is carried out based on the nonlinear model, then its stability is proved. Finally, the designed levitation predictive control algorithm is simulated. The simulation results show that the designed control method can achieve stable levitation under the premise of satisfying constraints. © 2023 IEEE.

关键词： Model predictive control

来源：评论

学校读者我要写书评

暂无评论

Well Production Prediction Method Based on Multi-Factor Fusion Time Series Model

Well Production Prediction Method Based on Multi-Factor Fusi...

引用

2025 International Petroleum Technology Conference, IPTC 2025

作者： Zhang, Yaqian Li, Xianjie Cao, Jinxin Miao, Chuanhui Zhang, Yuling Zeng, Shilin Zhang, Jian Li, Yiqiang Liu, Zheyu College of Petroleum Engineering China University of Petroleum Beijing China CNOOC Research Institute R&D Center of Offshore Oil Exploitation China National Offshore Oil Corp Beijing China

ISBN: (纸本)9781959025436

Production forecasting is a crucial issue in oilfield development, holding significant importance for evaluating geological potential and adjusting development schedule. However, due to complex geological conditions, seepage laws, and manual operations, traditional methods often struggle to achieve good results. This paper proposes a production forecasting method based on Multi-Factor LSTM combined with decline curve analysis. The production curve of an oil well is first fitted using a decline curve analysis, and then the difference between the actual production curve and the fitted production is taken as the input production data for the LSTM model. Considering operations such as daily production time, pump frequency changes, and choke size changes, this paper introduces these factors along with well production as input data within a time window to achieve higher production forecasting accuracy. The results indicate that the Multi-Factor LSTM combined with the decline curve analysis can effectively predict future well production. By introducing manual operations, the model can capture correlations between manual operations and oil production, demonstrating higher sensitivity to production fluctuations and achieving a model accuracy of 0.97. This represents an improvement of approximately 9% in r2 compared to the Single-Factor LSTM model. Additionally, the introduction of the decline curve analysis complements the deficiency of machine learning methods in predicting long-term, monotonic decline trends. Compared to a standalone LSTM model, the proposed model better captures the long-term production decline due to natural energy depletion and reduced remaining oil reserves in the production sequence. The proposed oil well production forecasting method based on the time series model with multi-factor fusion exhibits good adaptability for oil well production forecasting, providing a new approach for rapid and accurate forecasting of field production and subsequent adjus

关键词： Oil field development

来源：评论

学校读者我要写书评

暂无评论

Novel 2,4-diarylaminopyrimidine derivatives Containing Pyridine Moiety:design,Synthesis,Crystal Structure and Biological Evaluation

引用

Chinese Journal of Structural Chemistry 2022年第2期41卷 132-140,I0011页

作者： LIU Ju WU Shuang WANG Huan dU Si-Yuan LI Zhen SHEN Ji-Wei CHEN Ye dING Shi College of Pharmacy of Liaoning University Shenyang 110036China API Engineering Technology Research Center of Liaoning Province Shenyang 110036China Small Molecular Targeted Drug R&D Engineering Research Center of Liaoning Province Shenyang 110036China

A series of 2,4-diarylaminopyrimidine derivatives containing pyridine structure were designed and *** crystal structures of compounds 5d and 5e were obtained from X-ray *** crystal structure of 5d (C_(25)H_(20)Cl FN_(6)O_(2)) belongs to the monoclinic system,space group P2_(1)/c with a=11.0500(10),b=18.3045(17),c=13.5646(9)?andβ=122.806(5)°.5e (C_(25)H_(19)Cl F_(2)N_(6)O_(2)) is of monoclinic system,space group P2_(1)/c with a=10.9998(18),b=18.517(3),c=13.6355(16)?andβ=123.315(9)°.The bioassay results showed all of the target compounds exhibited potential antiproliferative activities against MKN-45,HT-29,A549,K562 and GIST882 cell *** them,compounds 5a,5c and 5e exhibited remarkable inhibitory activities against GIST882,K562 and A549 cell lines with IC_(50 )values of 0.68,0.38 and 0.60μM,respectively,which were comparable to that of the positive control foretinib.

关键词： pyrimidine pyridine synthesis X-ray diffraction antitumor activity

来源：评论

学校读者我要写书评

暂无评论

SecIngress:An API Gateway Framework to Secure Cloud Applications Based on N-Variant System

引用

China Communications 2021年第8期18卷 17-34页

作者： dacheng Zhou Hongchang Chen Guozhen Cheng Weizhen He Lingshu Li National Digital Switching System Engineering and Technological R&D Center ZhengzhouHenan 450002China

Based on the diversified technology and the cross-validation mechanism,the N-variant system provides a secure service architecture for cloud providers to protect the cloud applications from attacks by executing multiple variants of a single software in parallel and then checking their behaviors’***,it is complex to upgrade current Software as a Service(SaaS)applications to adapt N-variant system *** arise from the inability of tenants to adjust the application architecture in the cloud environment,and the difficulty for cloud service providers to implement N-variant systems using existing API *** paper proposes SecIngress,an API gateway framework,to overcome the challenge that it is hard in the cloud environment to upgrade the applications based on N-variants *** design a two-stage timeout processing method to lessen the service latency and an Analytic Hierarchy Process Voting under the Metadata mechanism(AHPVM)to enhance voting *** implement a prototype in a testbed environment and analyze the security and performance metrics before and after deploying the prototype to show the effectiveness of *** results reveal that SecIngress enhances the reliability of cloud applications with acceptable performance degradation.

关键词： N-variant system API gateway cloud security analytic hierarchy process

来源：评论

学校读者我要写书评

暂无评论

Mechanical densification synthesis of single-crystalline Ni-rich cathode for high-energy lithium-ion batteries

引用

Journal of Energy Chemistry 2023年第4期79卷 562-568页

作者： Gwonsik Nam Jaeseong Hwang donghun Kang Sieon Oh Sujong Chae Moonsu Yoon Minseong Ko Division of Convergence Materials Engineering Pukyong National UniversityBusan 48547Republic of Korea Namyang R&D Center Hyundai Motor CompanyHwaseong 18280Republic of Korea Division of Industrial Chemistry and Polymer Engineering Pukyong National UniversityBusan 48547Republic of Korea Department of Nuclear Science and Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA

The intergranular microcracking in polycrystalline Ni-rich cathode particle is led by anisotropic volume change and stress corrosion along grain boundary,accelerating battery performance ***,we have suggested a simple but advanced solid-state method that ensures both uniform transition metal distribution and single-crystalline morphology for Ni-rich cathode synthesis without sophisticated ***-assisted mechanical densification(PAMd)process on solid-state precursor mixture enables the dynamic mass transfer through the increased solid-solid contact area which facilitates the grain growth during sintering process,readily forming micro-sized single-crystalline ***,the improved chemical reactivity by a combination of capillary effect and vacancyassisted diffusion provides homogeneous element distribution within each primary *** a result,single-crystalline Ni-rich cathode with PAMd process has eliminated a potential evolution of intergranular cracking,thus achieving superior energy retention capability of 85%over 150 cycles compared to polycrystalline Ni-rich particle even after high-pressure calendering process(corresponding to electrode density of~3.6 g cm^(-3))and high cut-off voltage *** work provides a concrete perspective on developing facile synthetic route of micron-sized single-crystalline Ni-rich cathode materials for high energy density lithium-ion batteries(LIBs).

关键词： Lithium-ion batteries Ni-rich cathode materials Mechanical densification Solid-state synthesis

来源：评论

学校读者我要写书评

暂无评论

Antimicrobial effects of a compound solution of three medicine food homology plants

引用

Food Bioscience 2022年第5期49卷 307-312页

作者： Zhiping Yang Haixiang Wang Guohong Qi Guitang Chen Chongjiang Cao Suilou Wang Department of Food Quality and Safety/National R&D Center for Chinese Herbal Medicine Processing School of EngineeringChina Pharmaceutical UniversityNanjing211198China

China has a unique treasure house of medicine food homology plant resources. These resources provide both nutrition and bacterial infection prevention. With the rapid development of modern science and technology, the pursuit of health and food safety continues to grow. Advocating green health and paying attention to new natural food preservatives has become a new consumer trend. Here, we prepared a compound solution by combining ethanol extracts from three medicine food homology plants: Siraitia grosvenorii, Hippophae rhamnoides, and Alpinia oxyphylla. The antimicrobial activities of the compound solution were investigated using five common food spoilage microorganisms as target strains: Staphylococcus aureus, Bacillus subtilis, Escherichia coli, rhizopus, and Aspergillums niger. We determined the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) for each target strain, and further examined the effects of various environmental factors on antimicrobial activity. Our results indicate that the compound solution effectively inhibited the growth of S. aureus and rhizopus at a minimum inhibitory concentration of 7.81 mg/mL. It also inhibited the growth of B. subtilis, E. coli, and A. niger at a minimum inhibitory concentration of 15.6 mg/mL. Furthermore, the compound solution was stable under heat, ultraviolet, and light treatments, and was effective in the pH range of 3-5. Adding salt or sucrose to the compound mixture increased the antimicrobial effect synergistically, and added Fe3+ and Fe2+ also enhanced the antimicrobial activity of the compound solution. Therefore, our compound solution could be considered as a natural and effective antibacterial and antiseptic agent for food.

关键词： Siraitia grosvenorii Hippophae rhamnoides Alpinia oxyphylla Antimicrobial Anti-rot

来源：评论

学校读者我要写书评

暂无评论

Advances in understanding the graft healing mechanism:a review of factors and regulatory pathways

引用

园艺研究（英文） 2024年第8期11卷 297-309页

作者： Lixian Wang Yangmei Liao Jiming Liu Tianyun Zhao Liming Jia Zhong Chen State Key Laboratory for Efficient Production of Forest Resources Key Laboratory of Silviculture and Conservation of the Ministry of EducationNational Energy R&D Center for Non-food BiomassMinistry of Education of Engineering Research Centre for Forest and Grassland Carbon SequestrationCollege of ForestryBeijing Forestry UniversityBeijing 100083China

Grafting is a widely used technique for asexual plant reproduction,especially in agriculture and *** procedure is used to shorten the seedling period,improve the structure of scion branches,and help plants adapt to difficult *** grafting has numerous benefits,several obstacles remain to be *** connection between scion and rootstock is regulated by various factors,including phytohormones and molecular mechanisms,which are crucial for graft *** review provides an overview of recent advances in the field of grafting,with a specific focus on the factors and regulatory pathways that influence graft *** ultimate goal is to aid understanding of how to achieve successful grafting between plants and create desirable grafting *** provide an overview of the latest developments in plant grafting,covering aspects related to morphology,physiology,and molecular *** also discuss research directions in polyploid breeding and long-distance transfer of small molecules in grafted plants.

关键词： mechanism pathways review advances factors graft healing regulatory understanding

来源：评论

学校读者我要写书评

暂无评论

Non-invasive Healthcare Analytical Platform Based on Organic Electrochemical Transistors

引用

Chemical research in Chinese Universities 2024年第5期40卷 824-848页

作者： HU Xingyu MAO Ning YAN Xinwen HUANG Ling LIU Xu YANG Huige SUN Qingqing LIU Xuying JIA Hanyu School of Materials&Engineering Zhengzhou UniversityZhengzhou450001P.R.China Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science Hubei R&D Center of Hyperbranched Polymers Synthesis and ApplicationsSouth-Central University for NationalitiesWuhan430074P.R.China Science&Technology Innovation Center for Advanced Materials of Intelligent Equipment Longmen LaboratoryLuoyang471000P.R.China

Non-invasive bioelectronics,especially organic electrochemical transistors(OECTs),have drawn extensive attentions of academical and medical communities by virtue of their efficient bio-electronic interfacing,water-involved ionic transport,excellent ionic-electronic coupling,ultralow power consumption,wide detectable range,and outstanding detection *** structure diversity,low-temperature solution processability,facile bio/chemical functionalization,and excellent biocompatibility of organic mixed ionic-electronic conductors(OMIECs)render OECTs particularly suitable for non-invasive or minimally invasive healthcare analytical ***,we comprehensively review recent advances of the non-invasive analytical healthcare applications based on OECTs,especially on the detection of biomarkers or metabolites in the excretory biofluids,as well as the recording of electrophysiological signals.A brief introduction of OECT and its comparison with other organic thin-film transistors upon device configuration and working mechanism are firstly ***-of-the-art non-invasive OECT-based biosensors are summarized on their detection of ionic and molecular biomarkers,following with circuit design strategies of OECTs for real-time and in-situ electrophysiological recording from skin *** conclusion,remaining barriers and future challenges of non-invasive OECT-based bioelectronics towards lower detection limit,more accurate quantitative relationship between analyte concentrations and measured parameters,more intimate device-tissue interface,and long-term operation stability are deeply analyzed with a critical outlook.

关键词： Organic electrochemical transistor Non-invasive Bioelectronics Ion-selective Electrophysiological monitoring

来源：评论

学校读者我要写书评

暂无评论

INVESTIGATION OF FLUId dISTrIBUTION ANd rEWET PErFOrMANCE WITH THE USE OF dIFFErENT INNEr LAYEr dESIGN ANd TOP SHEETS IN SANITArY NAPKINS

引用

Tekstil ve Muhendis 2022年第128期29卷 301-307页

作者： Culfa, Gizem Sarioğlu, Esin daşdemİr, Mehmet Çelİkten, Ebru Nacarkahya, Tülin Kaya Lidersan Sağlık ve Gıda Ürünleri A.Ş. R&D Center Gaziantep Turkey Gaziantep University Faculty of Fine Arts Department of Textile and Fashion Design Gaziantep Turkey Gaziantep University Faculty of Engineering Department of Textile Engineering Gaziantep Turkey Karafiber Tekstil San. ve Tic. A.Ş.R&D Center Gaziantep Turkey

disposable hygienic products are classified as technical textile products and are used intensively in the field of medical textiles. As a hygienic textile product, a sanitary napkin consists of a top sheet, an inner layer (Acquisition distribution Layer (AdL) and a core of Pulp/Superabsorbent mixture), and a back sheet. Nonwovens are commonly used in the production of these components. The most important factors to consider in new product design are rapid absorption of menstrual fluid, comfort, and also price. In this context, although there is a cost restriction on sanitary napkins, it is clear that the use of different new raw materials and methods will improve their performance characteristics. In this study, a new designed airlaid composite nonwoven combined with synthetic fiber and wood pulp was used as the inner layer of a sanitary napkin without the core. In addition, four different top sheet types were used in the sanitary napkin design. Liquid strike through time, rewet, and menstrual fluid diffusion of the samples were determined, to compare the performance of sanitary napkins with core and without the core. It was concluded that the inner layer design has a significant effect on the liquid strike through time and menstrual fluid diffusion properties. It has been revealed that the menstrual fluid diffusion value of airlaid composite nonwoven sanitary napkins is higher than the AdL+core inner layer. In addition, it was concluded that the top sheet type did not have a statistically significant effect on liquid strike through and rewet properties. © 2022,Tekstil ve Muhendis. All rights reserved.

关键词： Weaving

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：