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Multi-functional photonic spin Hall effect sensor controlled by phase transition
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作者 程杰 李瑞昭 +3 位作者 程骋 张亚林 刘胜利 董鹏 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第7期336-342,共7页
Photonic spin Hall effect(PSHE), as a novel physical effect in light–matter interaction, provides an effective metrological method for characterizing the tiny variation in refractive index(RI). In this work, we propo... Photonic spin Hall effect(PSHE), as a novel physical effect in light–matter interaction, provides an effective metrological method for characterizing the tiny variation in refractive index(RI). In this work, we propose a multi-functional PSHE sensor based on VO_(2), a material that can reveal the phase transition behavior. By applying thermal control, the mutual transformation into different phase states of VO_(2) can be realized, which contributes to the flexible switching between multiple RI sensing tasks. When VO_(2) is insulating, the ultrasensitive detection of glucose concentrations in human blood is achieved. When VO_(2) is in a mixed phase, the structure can be designed to distinguish between the normal cells and cancer cells through no-label and real-time monitoring. When VO_(2) is metallic, the proposed PSHE sensor can act as an RI indicator for gas analytes. Compared with other multi-functional sensing devices with the complex structures, our design consists of only one analyte and two VO_(2) layers, which is very simple and elegant. Therefore, the proposed VO_(2)-based PSHE sensor has outstanding advantages such as small size, high sensitivity, no-label, and real-time detection, providing a new approach for investigating tunable multi-functional sensors. 展开更多
关键词 photonic spin Hall effect multi-functional sensors phase transition sensing performance
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One-step spraying method to construct superhydrophobic magnesium surface with extraordinary robustness and multi-functions 被引量:5
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作者 Lingjie Li Xia Li +5 位作者 Jinlong Chen Lei Liu Jinglei Lei Nianbing Li Gao Liu Fusheng Pan 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2021年第2期668-675,共8页
The robust magnesium surfaces with multi-functions are highly desirable,and the simple and scalable methods to construct such surfaces are urgently indispensable.Herein,we conducted a one-step spraying method to facil... The robust magnesium surfaces with multi-functions are highly desirable,and the simple and scalable methods to construct such surfaces are urgently indispensable.Herein,we conducted a one-step spraying method to facilely fabricate the robust coating with multi-functions on magnesium alloys.The as-sprayed magnesium alloys surface is superhydrophobic with a static water contact angle(WCA)of 157.0°and a roll-off angle of 6.0°.Such surface has excellent mechanical,chemical and thermal stabilities,even undergoing various physical and chemical damages,including sand impact(10 gmin^(-1),≥20 min),water impact(2 impacts s^(-1),≥180 min),abrasion(1.00 kPa,≥25 cycles),peeling(≥2.15 kPa),high temperature(200°C,≥24 h),strong acidic/salty/basic media(p H=113)and organic-solvent immersion(ethanol and n-hexane,≥24 h),demonstrating brilliant robustness.Notably,the surface displays multi-functions of corrosion protection,anti-fouling and heat insulation,which will undoubtedly promote the much wider applications of magnesium alloys. 展开更多
关键词 Magnesium alloy Spraying method SUPERHYDROPHOBICITY ROBUSTNESS multi-functions
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Design of Drilling and Riveting Multi-functional End Effector for CFRP and Aluminum Components in Robotic Aircraft Assembly 被引量:6
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作者 Zhang Lin Tian Wei +4 位作者 Li Dawei Hong Peng Li Zhenyu Zhou Weixue Liao Wenhe 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2018年第3期529-538,共10页
To fulfill the demands for higher quality,efficiency and flexibility in aviation industry,a multi-functional end effector is designed to automate the drilling and riveting processes in assembling carbon fiber reinforc... To fulfill the demands for higher quality,efficiency and flexibility in aviation industry,a multi-functional end effector is designed to automate the drilling and riveting processes in assembling carbon fiber reinforced polymer(CFRP)and aluminum components for a robotic aircraft assembly system.To meet the specific functional requirements for blind rivet installation on CFRP and aluminum materials,additional modules are incorporated on the end effector aside of the basic processing modules for drilling.And all of these processing modules allow for a onestep-drilling-countersinking process,hole inspection,automatic rivet feed,rivet geometry check,sealant application,rivet insertion and installation.Besides,to guarantee the better quality of the hole drilled and joints riveted,several online detection and adjustment measures are applied to this end effector,including the reference detection and perpendicular calibration,which could effectively ensure the positioning precision and perpendicular accuracy as demanded.Finally,the test result shows that this end effector is capable of producing each hole to a positioning precision within ±0.5 mm,aperpendicular accuracy within 0.3°,a diameter tolerance of H8,and a countersink depth tolerance of±0.01 mm.Moreover,it could drill and rivet up to three joints per minute,with acceptable shearing and tensile strength. 展开更多
关键词 robotic aircraft assembly CFRP and aluminum components automatic drilling and riveting multi-functional end effector online detection and adjustment
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Development of a novel multi-functional integrated bioconjugate effectively targeting K-Ras mutant pancreatic cancer 被引量:1
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作者 Yang-Yang Wang Liang Li +4 位作者 Xiu-Jun Liu Qing-Fang Miao Yi Li Meng-Ran Zhang Yong-Su Zhen 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2022年第2期232-242,共11页
Folate receptor(FR)overexpression occurs in a variety of cancers,including pancreatic cancer.In addition,enhanced macropinocytosis exists in K-Ras mutant pancreatic cancer.Furthermore,the occurrence of intensive desmo... Folate receptor(FR)overexpression occurs in a variety of cancers,including pancreatic cancer.In addition,enhanced macropinocytosis exists in K-Ras mutant pancreatic cancer.Furthermore,the occurrence of intensive desmoplasia causes a hypoxic microenvironment in pancreatic cancer.In this study,a novel FR-directed,macropinocytosis-enhanced,and highly cytotoxic bioconjugate folate(F)-human serum albumin(HSA)-apoprotein of lidamycin(LDP)-active enediyne(AE)derived from lidamycin was designed and prepared.F-HSA-LDP-AE consisted of four moieties:F,HSA,LDP,and AE.F-HSA-LDP presented high binding efficiency with the FR and pancreatic cancer cells.Its uptake in wild-type cells was more extensive than in K-Ras mutant-type cells.By in vivo optical imaging,F-HSA-LDP displayed prominent tumor-specific biodistribution in pancreatic cancer xenograft-bearing mice,showing clear and lasting tumor localization for 360 h.In the MTT assay,F-HSA-LDP-AE demonstrated potent cytotoxicity in three types of pancreatic cancer cell lines.It also induced apoptosis and caused G2/M cell cycle arrest.F-HSALDP-AE markedly suppressed the tumor growth of AsPc-1 pancreatic cancer xenografts in athymic mice.At well-tolerated doses of 0.5 and 1 mg/kg,(i.v.,twice),the inhibition rates were 91.2%and 94.8%,respectively(P<0.01).The results of this study indicate that the F-HSA-LDP multi-functional bioconjugate might be effective for treating K-Ras mutant pancreatic cancer. 展开更多
关键词 Pancreatic cancer Folate receptor multi-functional Macropinocytosis-enhanced BIOCONJUGATE K-RAS PEGYLATION
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Multi-functional optical fiber sensor system based on a dense wavelength division multiplexer
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作者 Yue-Xin Yin Zhifa Wu +4 位作者 Siwen Sun Liang Tian Xibin Wang Yuanda Wu Daming Zhang 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第7期222-224,共3页
We propose a novel and efficient multi-functional optical fiber sensor system based on a dense wavelength division multiplexer(DWDM).This system consists of an optical fiber temperature sensor, an optical fiber strain... We propose a novel and efficient multi-functional optical fiber sensor system based on a dense wavelength division multiplexer(DWDM).This system consists of an optical fiber temperature sensor, an optical fiber strain sensor, and a 48-channel DWDM.This system can monitor temperature and strain changes at the same time.The ranges of these two sensors are from-20℃ to 100℃ and from-1000 με to 2000 με, respectively.The sensitivities of the temperature sensor and strain sensor are 0.03572 nm/℃ and 0.03808 nm/N, respectively.With the aid of a broadband source and spectrometer,different kinds and ranges of parameters in the environment can be monitored by using suitable sensors. 展开更多
关键词 DENSE wavelength DIVISION multiplexer(DWDM) planar LIGHTWAVE circuit multi-functional SENSOR optical fiber SENSOR system
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A design and application of compound multi-functional sensor in wood-based panel processing
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作者 XU Kai-hong ZHOU Ding-guo 《Journal of Forestry Research》 SCIE CAS CSCD 2006年第4期319-322,共4页
A compound multi-functional sensor was designed by the study on the on-line testing technology of wood-based panels, and its properties of shape, functions, size, resistance to special environment were studied in deta... A compound multi-functional sensor was designed by the study on the on-line testing technology of wood-based panels, and its properties of shape, functions, size, resistance to special environment were studied in details. The operational principles of different sensors, technical flow of manufacturing, development of software systems of special functions, and the assessments of technical specification were also be introduced. This sensor adopted many new technologies, such as the applications of piezoresistant effect and heat sensitive effect can effectively measure the pressure and temperature, digital signal processing technology was used to extract and treat signals, and resist interference, encapsulation technology was used to keep the normal run of sensor under a harsh environment. Thus, the on-line compound multi-functional temperature/pressure sensor can be applied better to supervise the production of wood-based panels. All technical specifications of the compound multi-functional sensor were tested and the results met the requirements of the equipments. 展开更多
关键词 Wood-based panel processing multi-functional sensor Piezoresistant effect Heat sensitive effect
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Quasi-distribution Appraisal about Finite Element Analysis of Multi-functional Structure Made of Honeycomb Sandwich Materials
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作者 王一多 SHI Xiaofei +1 位作者 XI Ping LANG Haitao 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2018年第1期30-34,共5页
A new appraisal method(QDA, quasi-distribution appraisal) which could be used to evaluate the finite element analysis of multi-functional structure made of honeycomb sandwich materials is developed based on sub-sect... A new appraisal method(QDA, quasi-distribution appraisal) which could be used to evaluate the finite element analysis of multi-functional structure made of honeycomb sandwich materials is developed based on sub-section Bezier curve. It is established by simulating the distribution histogram data obtained from the numerical finite element analysis values of a satellite component with sub-section Bezier curve. Being dealt with area normalization method, the simulation curve could be regarded as a kind of probability density function(PDF), its mathematical expectation and the variance could be used to evaluate the result of finite element analysis. Numerical experiments have indicated that the QDA method demonstrates the intrinsic characteristics of the finite element analysis of multi-functional structure made of honeycomb sandwich materials, as an appraisal method, it is effective and feasible. 展开更多
关键词 honeycomb sandwich materials multi-functional structure quasi-distribution finite element analysis
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儿童肺炎支原体肺炎肺泡灌洗液CARDS TX、HMGB1、TLR2表达及临床意义
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作者 李玉琴 王喆 +2 位作者 丁莹 储矗 周卫芳 《右江医学》 2024年第5期399-404,共6页
目的研究肺炎支原体肺炎(MPP)患儿肺泡灌洗液中社区获得性呼吸窘迫综合征毒素(CARDS TX)、高迁移率族蛋白1(HMGB1)、Toll样受体2(TLR2)表达,探讨其在MPP发病中的临床意义。方法回顾性分析55例MPP病例组及20例对照组临床资料,同时检测两... 目的研究肺炎支原体肺炎(MPP)患儿肺泡灌洗液中社区获得性呼吸窘迫综合征毒素(CARDS TX)、高迁移率族蛋白1(HMGB1)、Toll样受体2(TLR2)表达,探讨其在MPP发病中的临床意义。方法回顾性分析55例MPP病例组及20例对照组临床资料,同时检测两组支气管肺泡灌洗液(BALF)中CARDS TX、HMGB1、TLR2、TLR4、晚期糖基化终末产物受体(RAGE)及髓样分化因子88(MyD88)表达,体外检测不同浓度CARDS TX刺激下HMGB1、TLR2的表达并进行比较。结果与对照组相比,MPP组LYM绝对值计数、PA、CD3^(+)、CD3^(+)CD4^(+)、CD3^(+)CD8^(+)、CD3-CD19^(+)、NK cell、CD19^(+)CD23^(+)明显下降,CRP、LDH、D-二聚体、IgA、IgG、IgM、CARDS TX、HMGB1、TLR2、MyD88均升高,差异有统计学意义(P<0.05或0.001)。CARDS TX刺激后HMGB1、TLR2的表达升高,且呈正相关,差异有统计学意义(P<0.001)。结论CARDS TX可能通过HMGB1-TLR2-MyD88途径参与肺炎支原体(MP)的致病。 展开更多
关键词 肺炎支原体肺炎 社区获得性呼吸窘迫综合征毒素 高迁移率族蛋白1 TOLL样受体2 髓样分化因子88
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Fiber-Loop Ringdown Multi-Function Sensors
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作者 Ke Zhao Bokai Yi Zefeng Wang 《Journal of Applied Mathematics and Physics》 2014年第12期1118-1122,共5页
We demonstrate a fiber-loop ring down multi-function sensors system, which can be used to measure refractive index and curvature simultaneously. Good agreement has been found between theoretical analyses and experimen... We demonstrate a fiber-loop ring down multi-function sensors system, which can be used to measure refractive index and curvature simultaneously. Good agreement has been found between theoretical analyses and experimental results. It has great potential for sensor applications. 展开更多
关键词 Fiber-Loop RINGDOWN multi-function SENSORS Refractive INDEX SENSORS CURVATURE SENSORS
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Considering calcium-binding proteins in invertebrates: multi-functional proteins that shape neuronal growth
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作者 Charles R.Tessier 《Neural Regeneration Research》 SCIE CAS CSCD 2016年第2期208-209,共2页
Calcium is a critical second messenger molecule in all cells and is vital in neurons for synaptic transmission.Given this importance,calcium ions are tightly controlled by a host of molecular players including ion cha... Calcium is a critical second messenger molecule in all cells and is vital in neurons for synaptic transmission.Given this importance,calcium ions are tightly controlled by a host of molecular players including ion channels,sensors,and buffering proteins.Calcium can act directly by binding to signaling molecules or calcium’s effects can be indirect,for example by altering nuclear histones. 展开更多
关键词 Considering calcium-binding proteins in invertebrates multi-functional proteins that shape neuronal growth
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Analysis of Dynamic Cross Response between Spindles in a Dual Spindle Type Multi-Functional Turning Machine
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作者 Y. H. Choi S. T. Kim +1 位作者 T. Y. Seo K. H. Kim 《Journal of Power and Energy Engineering》 2013年第7期20-24,共5页
In order to meet increasing demand for higher productivity and flexibility, recently many kinds of multi-functional machine tools, which are capable of multiple machining functions or different kinds of machining proc... In order to meet increasing demand for higher productivity and flexibility, recently many kinds of multi-functional machine tools, which are capable of multiple machining functions or different kinds of machining processes on one machine, have been developed and widely used in manufacturing industries. In this study, a multi-functional turning lathe, which has two spindles and two turrets so that multiple turning operations and various machining processes could be performed simultaneously, has been developed. Furthermore, the equations of correlation between whole responses and cross responses of the two spindles have been derived to examine to what extent the two spindles affect each other’s vibrations. 展开更多
关键词 multi-functional LATHE Multi-Spindles Frequency RESPONSE CROSS RESPONSE FEM Structural ANALYSIS
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Design and Development of a Multi-functional Laparoscopic Device
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作者 Tugrul Tansug Elif Taskin +1 位作者 Eray Kurt Meltem Elitas 《Journal of Mechanics Engineering and Automation》 2019年第5期173-176,共4页
This study presents a design of a multifunctional laparoscopic appendectomy device that includes three surgical instruments commonly used in laparoscopic appendicitis surgeries:endoloop,endobag and scissors.It collect... This study presents a design of a multifunctional laparoscopic appendectomy device that includes three surgical instruments commonly used in laparoscopic appendicitis surgeries:endoloop,endobag and scissors.It collects these three independent surgical tools in a single laparoscopic appendectomy device.These days there is a trend of moving to multi-functional surgery devices during minimally invasive surgery.The main reasons behind the minimal invasive surgery are to avoid changing the devices several times during the operation,to reduce the time spent in operation,to increase the efficiency of the operation,to facilitate the follow-up of the camera and devices,and to leave trocars to be used for other surgical instruments.The multi-functional appendectomy device that,we present here,provides these benefits.The standard trocar entries are appropriate for its usage.The presented multifunctional laparoscopic appendectomy device offers more practical use in comparison to individual devices.On the other hand,development of these multi-functional surgery devices can be directly enhanced to the robotic surgery devices. 展开更多
关键词 Apendectomy multi-functional LAPAROSCOPY SOLIDWORKS SURGERY
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Design and Development of a Forest Nursery, for the Enhancement of Multi-Functional Agriculture and for a Didactical Purpose
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作者 Elena Valent Sirio Rossano Secondo Cividino +4 位作者 Marco Barbaro Luisa Dalla Costa Stefano Santi Simona Rainis Rino Gubiani 《Journal of Life Sciences》 2013年第8期892-900,共9页
The experimental idea of the present project was elaborated in order to create a structure where different categories and institutions could collaborate, with the common aim to develop a sustainable and profitable agr... The experimental idea of the present project was elaborated in order to create a structure where different categories and institutions could collaborate, with the common aim to develop a sustainable and profitable agriculture in mountain and marginal areas. The target was the recovering of an abandoned agricultural site, throughout its re-organisation, re-qualification and auto-sustainability, involving local citizens. This approach was based on three further broad functions such as environmental, economic and social purposes. This cooperation, that allows the capitalization of local knowledge and the forging of relationships between local and external sources of expertise, information and advice, is fundamental to the future of existing rural communities, in particular in mountain areas. The model proposed, with the elaboration of a management software and technical agronomic sheets, could be an incentive for the activities already present in that region and to stimulate new ones. The enhancing of the native ecological system, the biodiversity tutelage and the valorization of the knowledge of the territory is the basic requirement for the successful of any land management. 展开更多
关键词 Innovative sustainable and multi-functional agriculture recovering of disused agronomic areas biodiversity tutelage horticulture.
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CARD6在脓毒症心肌损伤中的机制研究
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作者 李一民 石宁宁 +2 位作者 曲央旺姆 辛勇 周吴刚 《上海医药》 CAS 2024年第5期39-42,69,共5页
目的:探讨CARD6在脓毒症心肌损伤中的调节机制。方法:将C57BL/6小鼠随机分为对照组与模型组。采用LPS腹腔注射法构建脓毒症心肌损伤小鼠模型,RT-qPCR检测小鼠心肌组织中CARD6、caspase-1的mRNA水平。体外实验则采用LPS刺激转染CARD6过... 目的:探讨CARD6在脓毒症心肌损伤中的调节机制。方法:将C57BL/6小鼠随机分为对照组与模型组。采用LPS腹腔注射法构建脓毒症心肌损伤小鼠模型,RT-qPCR检测小鼠心肌组织中CARD6、caspase-1的mRNA水平。体外实验则采用LPS刺激转染CARD6过表达质粒的H9C2细胞,检测caspase-1、细胞活力、CK-MB水平。结果:与对照组相比,模型组小鼠心肌组织中LDH、CK-MB含量,caspase-1表达水平上升,提示脓毒症导致小鼠心肌损伤,而CARD6表达水平明显降低。体外实验发现CARD6表达水平呈下降趋势,转染含有CARD6的过表达质粒后细胞释放CK-MB的水平降低、细胞活力增加、caspase-1水平降低。结论:CARD6可改善脓毒症所致心肌损伤,其机制可能与caspase-1介导的细胞焦亡相关。 展开更多
关键词 card6 CASPASE-1 细胞焦亡 脓毒症 心肌损伤
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Multi-Functioning in Virtual Monitoring of Thin-Walled Bridges
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作者 Alexander Tesar 《Journal of Mechanics Engineering and Automation》 2012年第11期701-708,共8页
Multi-functioning in virtual monitoring and assessment of ultimate dynamics of thin-walled bridges is treated in present paper. The approach enables multiple functions in virtual monitoring of the bridges made of inte... Multi-functioning in virtual monitoring and assessment of ultimate dynamics of thin-walled bridges is treated in present paper. The approach enables multiple functions in virtual monitoring of the bridges made of integrated thin-walled members with their hierarchical configuration. Theoretical, numerical and experimental in situ assessments of the problem are presented. Some results of structural application are submitted. 展开更多
关键词 multi-functioning NONLINEARITIES optimization thin-walled bridge time response ultimate behavior virtual monitoring.
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A Portable Multi-functional Real-time Digital Simulator Dedicated to Protective Relay Testing
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作者 Liang Zhicheng Ma Xiandong +1 位作者 Wang Haixian Wang Like (Nanjing Automation Research Institute (NARI)) 《Electricity》 1998年第4期27-29,共3页
The paper intfoduces a PC-DSP based real-time digital simulator which is portable in size and aimed at the closed-loop testing of various types of protective relays for their design and application. The simulator can ... The paper intfoduces a PC-DSP based real-time digital simulator which is portable in size and aimed at the closed-loop testing of various types of protective relays for their design and application. The simulator can be widely used in not only concerning utilities but also manufacturers and research / certification institutes because of its many functions. The hardware architecture and software implementation of the simulator are described. The main features and functions of the simulator are also 展开更多
关键词 TIME A Portable multi-functional Real-time Digital Simulator Dedicated to Protective Relay Testing MMI
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MULTI-FUNCTIONAL EQUIPMENT MAINTENANCE AGENT
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《China Oil & Gas》 CAS 1997年第4期227-227,共1页
关键词 multi-functionAL EQUIPMENT MAINTENANCE AGENT
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肺炎支原体CARDS毒素依赖KELED序列调控炎性反应
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作者 许钰铃 杨婷钰 +1 位作者 宋楠 李洁琼 《标记免疫分析与临床》 CAS 2024年第9期1698-1703,共6页
目的细胞内逆向运输系统是微生物毒素蛋白导致细胞毒性的关键。KELED序列是肺炎支原体CARDS毒素逆向转运至内质网,而后发挥细胞毒性作用的关键氨基酸基序。在小鼠模型中,体外重组的CARDS蛋白可以重现肺炎支原体肺炎患者的特征性症状。然... 目的细胞内逆向运输系统是微生物毒素蛋白导致细胞毒性的关键。KELED序列是肺炎支原体CARDS毒素逆向转运至内质网,而后发挥细胞毒性作用的关键氨基酸基序。在小鼠模型中,体外重组的CARDS蛋白可以重现肺炎支原体肺炎患者的特征性症状。然而,CARDS是否依赖于KELED序列调控肺组织炎性反应仍不清楚。方法在大肠杆菌中表达并纯化CARDS及其KELED序列突变蛋白;随后在细胞水平验证其致空泡化活性;最后,在小鼠模型中评价KELED序列突变的CARDS蛋白是否影响炎性因子的表达以及是否造成肺组织病理学损伤。结果KELED序列氨基酸发生突变,减弱CARDS蛋白致细胞空泡化效应,下调肺组织炎性因子mRNA表达,减轻肺组织的病理学损伤。结论KELED序列对CARDS蛋白致细胞空泡化及炎性损伤活性的维持至关重要。 展开更多
关键词 肺炎支原体 cardS毒素 KELED序列 炎性反应
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Credit Card Fraud Detection Using Improved Deep Learning Models
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作者 Sumaya S.Sulaiman Ibraheem Nadher Sarab M.Hameed 《Computers, Materials & Continua》 SCIE EI 2024年第1期1049-1069,共21页
Fraud of credit cards is a major issue for financial organizations and individuals.As fraudulent actions become more complex,a demand for better fraud detection systems is rising.Deep learning approaches have shown pr... Fraud of credit cards is a major issue for financial organizations and individuals.As fraudulent actions become more complex,a demand for better fraud detection systems is rising.Deep learning approaches have shown promise in several fields,including detecting credit card fraud.However,the efficacy of these models is heavily dependent on the careful selection of appropriate hyperparameters.This paper introduces models that integrate deep learning models with hyperparameter tuning techniques to learn the patterns and relationships within credit card transaction data,thereby improving fraud detection.Three deep learning models:AutoEncoder(AE),Convolution Neural Network(CNN),and Long Short-Term Memory(LSTM)are proposed to investigate how hyperparameter adjustment impacts the efficacy of deep learning models used to identify credit card fraud.The experiments conducted on a European credit card fraud dataset using different hyperparameters and three deep learning models demonstrate that the proposed models achieve a tradeoff between detection rate and precision,leading these models to be effective in accurately predicting credit card fraud.The results demonstrate that LSTM significantly outperformed AE and CNN in terms of accuracy(99.2%),detection rate(93.3%),and area under the curve(96.3%).These proposed models have surpassed those of existing studies and are expected to make a significant contribution to the field of credit card fraud detection. 展开更多
关键词 card fraud detection hyperparameter tuning deep learning autoencoder convolution neural network long short-term memory RESAMPLING
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A Self-Adapting and Efficient Dandelion Algorithm and Its Application to Feature Selection for Credit Card Fraud Detection
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作者 Honghao Zhu MengChu Zhou +1 位作者 Yu Xie Aiiad Albeshri 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2024年第2期377-390,共14页
A dandelion algorithm(DA) is a recently developed intelligent optimization algorithm for function optimization problems. Many of its parameters need to be set by experience in DA,which might not be appropriate for all... A dandelion algorithm(DA) is a recently developed intelligent optimization algorithm for function optimization problems. Many of its parameters need to be set by experience in DA,which might not be appropriate for all optimization problems. A self-adapting and efficient dandelion algorithm is proposed in this work to lower the number of DA's parameters and simplify DA's structure. Only the normal sowing operator is retained;while the other operators are discarded. An adaptive seeding radius strategy is designed for the core dandelion. The results show that the proposed algorithm achieves better performance on the standard test functions with less time consumption than its competitive peers. In addition, the proposed algorithm is applied to feature selection for credit card fraud detection(CCFD), and the results indicate that it can obtain higher classification and detection performance than the-state-of-the-art methods. 展开更多
关键词 Credit card fraud detection(CCFD) dandelion algorithm(DA) feature selection normal sowing operator
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