检索结果-南通市图书馆

International Journal of Smart and Nano materials 2014年第2期5卷 114-122页

作者： m.Ghaffari Y.Zhou m.lin Chong min Koo Q.m.Zhang Department of materials Science and Engineering Materials Research InstituteThe Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Electrical Engineering Materials Research InstituteThe Pennsylvania State UniversityUniversity ParkPA 16802USA materials Research Institute The Pennsylvania State UniversityUniversity ParkPA 16802USA Center for materials Architecturing Institute for Multi-Disciplinary Convergence of MaterialsKorea Institute of Science and Technology(KIST)Hwarangno 14-gil 5Soengbuk-guSeoul 136-791Republic of Korea

High elastic energy density and high-efficiency ionic electromechanical actuators were prepared from aligned activated microwave exfoliated graphite oxide(A-amEGO)/polymer nano-composites,and the electromechanical performance was *** elastic modulus and elastic energy density of the ionic actuators can be tuned over a wide range by varying the polymer(poly(vinylidene fluoride/chlorotrifluoroethylene)[P(VDF-CTFE)])concentration in the nano-composite *** A-amEGO/P(VDF-CTFE)nano-composite actuators with 35 wt.%of polymer content exhibit an elastic energy density higher than 5 J/cm^(3) and an electromechanical conversion efficiency higher than 3.5%,induced under 4 *** results show the promise of high-density highly aligned graphene electrodes for high-performance ionic electromechanical transduction devices.

关键词： nano-porous activated microwave exfoliated graphite oxide(amEGO) actuator self-assembly elastic modulus elastic energy density

Stable dielectric response of low-loss aromatic polythiourea thin films on Pt/SiO_(2) substrate

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

Journal of Advanced Dielectrics 2016年第1期6卷 46-49页

作者： A.Eršte L.Fulanović L.Čoga m.lin Y.Thakur Q.m.Zhang V.Bobnar Jožef Stefan Institute Jamova cesta 39 SI-1000 LjubljanaSlovenia Faculty of mathematics and Physics University of Ljubljana Jadranska ulica 19SI-1000 LjubljanaSlovenia Department of Electrical Engineering and materials Research Institute The Pennsylvania State University University ParkPennsylvania 16802USA

We have investigated dielectric properties of aromatic polythiourea(ArPTU,a polar polymer containing high dipolar moments with very low defect levels)thin films that were developed on Pt/SiO_(2) *** detected response is compared to the response of commercially available polymers,such as high density polyethylene(HDPE)and polypropylene(PP),which are at present used in foil *** values of the dielectric constantε'≈5(being twice higher than in HDPE and PP)over broad temperature and frequency ranges and dielectric losses as low as in commercial systems suggest ArPTU as a promising candidate for future use in a variety of applications.

关键词： Aromatic polythiourea dielectric polymer film capacitor dielectric spectroscopy ellipsometry

The role of N-glycosylation in cancer

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

Acta Pharmaceutica Sinica B 2024年第3期14卷 1098-1110页

作者： Yu lin David m.Lubman Department of Surgery University of Michigan Medical CenterAnn ArborMI 48109USA

Despite advances in understanding the development and progression of cancer in recent years,there remains a lack of comprehensive characterization of the cancer *** play an important role in medicine and are involved in various human disease conditions including ***-moieties participate in fundamental cancer processes like cell signaling,invasion,angiogenesis,and *** N-glycosylation significantly impacts cancer processes and targeted therapies in ***,understanding N-glycosylation in a tumor is essential for comprehending disease progression and discovering anti-cancer targets and biomarkers for therapy monitoring and *** review presents the fundamental process of protein N-glycosylation and summarizes glycosylation changes in tumor cells,including increased terminal sialylation,N-glycan branching,and ***,the role of N-glycosylation in tumor signaling pathways,migration,and metabolism are *** and glycopeptides as potential biomarkers for early detection of cancer based on site specificity have been ***,understanding and exploring the cancer glycoproteome,along with its role in medicine,implication in cancer and other human diseases,highlights the significance of N-glycosylation in tumor processes,necessitating further research for potential anticancer targets and biomarkers.

关键词： N-Glycosylated proteins Cancer signaling Cancer angiogenesis Cancer metabolism Cancer biomarkers

A fast forward computational method for nuclear measurement using volumetric detection constraints

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第2期35卷 47-63页

作者： Qiong Zhang lin-Lv lin University of Electronic Science and Technology of China Chengdu 610000China

Owing to the complex lithology of unconventional reservoirs,field interpreters usually need to provide a basis for interpretation using logging simulation *** the various detection tools that use nuclear sources,the detector response can reflect various types of information of the *** monte Carlo method is one of the primary methods used to obtain nuclear detection responses in complex ***,this requires a computational process with extensive random sam.ling,consumes considerable resources,and does not provide real-time response ***,a novel fast forward computational method(FFCm)for nuclear measurement that uses volumetric detection constraints to rapidly calculate the detector response in various complex environments is ***,the data library required for the FFCm is built by collecting the detection volume,detector counts,and flux sensitivity functions through a monte Carlo ***,based on perturbation theory and the Rytov approximation,a model for the detector response is derived using the flux sensitivity function method and a one-group diffusion *** environmental perturbation is constrained to optimize the model according to the tool structure and the impact of the formation and borehole within the effective detection ***,the method is applied to a neutron porosity tool for *** various complex simulation environments,the maximum relative error between the calculated porosity results of monte Carlo and FFCm was 6.80%,with a rootmean-square error of 0.62 *** field well applications,the formation porosity model obtained using FFCm was in good agreement with the model obtained by interpreters,which demonstrates the validity and accuracy of the proposed method.

关键词： Nuclear measurement Fast forward computation Volumetric constraints

长期动态机械拉伸力诱导类骨细胞的分化及成熟

在线全文

学校读者我要写书评

暂无评论

中华创伤骨科杂志 2006年第10期8卷 908-910页

作者：陈宗贤林名钊台湾卫生研究院医学工程研究组

目的探讨长期动态机械拉伸力对类骨细胞分化及成熟的影响。方法利用机械形变发生装置拉伸类骨细胞,分析类骨细胞是否因拉伸力而使分化更趋成熟。应用Flexercell Strain Unit机械力拉伸装置对mG63及C2C12细胞株施加0～10%的拉伸形变72h... 详细信息

目的探讨长期动态机械拉伸力对类骨细胞分化及成熟的影响。方法利用机械形变发生装置拉伸类骨细胞,分析类骨细胞是否因拉伸力而使分化更趋成熟。应用Flexercell Strain Unit机械力拉伸装置对mG63及C2C12细胞株施加0～10%的拉伸形变72h。通过碱性磷酸酶(ALP)染色、RT-PCR反应及骨形态发生蛋白-2(BmP-2)添加测试来检测长期动态机械拉伸力对类骨细胞分化的影响。结果拉伸力使mG63细胞的ALP活性约增加2倍,RT-PCR检测显示骨标志物[骨钙素(OCN)及ALP]表达均因拉伸力作用而增加。而单独施加拉伸力并不能增加C2C12肌原细胞内ALP的活性。添加BmP-2培养能促进C2C12细胞向骨细胞分化,并增加细胞ALP的活性。在BmP-2刺激下拉伸力可使C2C12细胞内ALP的活性增加2倍以上。结论本研究确立10%拉伸力能促进类骨细胞向骨细胞分化。对于未分化的肌原细胞,拉伸力刺激并不能使其直接向骨分化,但却能使分化中的骨细胞加速分化或成熟。

关键词：机械拉伸力类骨细胞骨分化骨成熟

The Existence of a meridional Curve in Closed Incompressible Surfaces in Fully Alternating link Complements

在线全文

学校读者我要写书评

暂无评论

Chinese Annals of mathematics,Series B 2024年第1期45卷 73-80页

作者： Wei lin School of mathematical Sciences Dalian University of TechnologyDalian 116024LiaoningChina

menasco showed that a closed incompressible surface in the complement of a non-split prime alternating link in S^(3) contains a circle isotopic in the link complement to a meridian of the *** on this result,he was able to argue the hyperbolicity of non-split prime alternating links in *** et *** that if F■S×I\L is an essential torus,then F contains a circle which is isotopic in S×I\L to a meridian of *** author generalizes his result as follows:Let S be a closed orientable surface,L be a fully alternating link in S×I\If F ■ S×I\L is a closed essential surface,then F contains a circle which is isotopic in S×I\L to a meridian of L.

关键词： Fully alternating Incompressible surfaces meridionally incompressible

Enhancing Safety in Autonomous Vehicle Navigation:An Optimized Path Planning Approach Leveraging model Predictive Control

在线全文

学校读者我要写书评

暂无评论

Computers, materials & Continua 2024年第9期80卷 3555-3572页

作者： Shih-lin lin Bo-Chen lin Graduate Institute of Vehicle Engineering National Changhua University of EducationChanghua50007TaiwanChina

This paper explores the application of model Predictive Control(mPC)to enhance safety and efficiency in autonomous vehicle(AV)navigation through optimized path *** evolution of AV technology has progressed rapidly,moving from basic driver-assistance systems(Level 1)to fully autonomous capabilities(Level 5).Central to this advancement are two key functionalities:Lane-Change maneuvers(LCm)and Adaptive Cruise Control(ACC).In this study,a detailed simulation environment is created to replicate the road network between Nantun andWuri on National Freeway No.1 in *** mPC controller is deployed to optimize vehicle trajectories,ensuring safe and efficient *** onboard sensors,including vehicle cameras and millimeterwave radar,are used to detect and respond to dynamic changes in the surrounding environment,enabling real-time decision-making for LCm and *** simulation resultshighlight the superiority of the mPC-based approach in maintaining safe distances,executing controlled lane changes,and optimizing fuel ***,the mPC controller effectively manages collision avoidance,reduces travel time,and contributes to smoother traffic flow compared to traditional path planning *** findings underscore the potential of mPC to enhance the reliability and safety of autonomous driving in complex traffic *** research will focus on validating these results through real-world testing,addressing computational challenges for real-time implementation,and exploring the adaptability of mPC under various environmental *** study provides a significant step towards achieving safer and more efficient autonomous vehicle navigation,paving the way for broader adoption of mPC in AV systems.

关键词： Autonomous driving model predictive control(mPC) lane change maneuver(LCm) adaptive cruise control(ACC)

Adaptive admittance tracking control for interactive robot with prescribed performance

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

Journal of Systems Engineering and Electronics 2024年第2期35卷 444-450页

作者： mENG Qingrui lin Yan School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100190China College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590China

An adaptive control approach is presented in this paper for tracking desired trajectories in interactive manipulators. The controller design incorporates prescribed performance functions (PPFs) to improve dynamic performance. Notably, the performance of the output error is confined in an envelope characterized by exponential convergence, leading to convergence to zero. This feature ensures a prompt response from admittance control and establishes a reliable safety framework for interactions. Simulation results provide practical insights,demonstrating the viability of the control scheme proposed in this paper.

关键词： prescribed performance admittance control adaptive control robots

No Reference Image Sharpness Assessment Based on Global Color Difference Variation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2024年第1期33卷 293-302页

作者： Chenyang SHI Yandan lin School of Artificial Intelligence Anhui Polytechnic University School of mechanical Engineering Anhui Polytechnic University Department of Light Sources and Illuminating Engineering Fudan University Academy for Engineering & Technology Fudan University

Image quality assessment(IQA) model is designed to measure the image quality in consistent with subjective ratings by computational models. In this research, a valid no reference IQA(NR-IQA) model for color image sharpness assessment is proposed based on local color difference map in a color space. In the proposed model, the absolute color difference variation and relative color difference variation are combined to evaluate sharpness in YIQ color space(a color coordinate system for the development of the United States color television system). The difference between sharpest and blurriest spot of an image is represented by the absolute color difference variation, and relative color difference variation expresses the variation in the image content. Extensive experiments are performed on five publicly available benchmark synthetic blur databases and two real blur databases, and the results prove that the proposed model work better than the other state-of-the-art and latest NR-IQA models for the prediction accuracy on blurry images. Besides, the model maintains the lowest computational complexity.

关键词： Image quality TV Image color analysis Databases Computational modeling Color Predictive models

VOC emitted by biopharmaceutical industries:Source profiles,health risks,and secondary pollution

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第1期135卷 570-584页

作者： Jiawei ma lin Li State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China National Engineering Laboratory for VOCs Pollution Control material&Technology University of Chinese Academy of SciencesBeijing 101408China

The biopharmaceutical industry contributes substantially to volatile organic compounds(VOCs)emissions,causing growing concerns and social developmental *** study conducted an on-site investigation of the process-based emission of VOCs from three biopharmaceutical *** the workshops of the three enterprises,26 VOCs were detected,which could be sorted into 4 classes:hydrocarbons,aromatic hydrocarbons,oxygen-containing compounds,and nitrogen-containing *** were the main components of waste gases,accounting for 44.13%-77.85%of the overall ***-based source profiles were compiled for each process unit,with the fermentation and extraction units of tiam.lin fumarate being the main source of VOC *** heptanone,vinyl acetate,diethylamine,propylene glycol methyl ether(PGmE),and benzene were screened as priority pollutants through a fuzzy comprehensive evaluation *** level concentration simulation results of the Gauss plume diffusion model demonstrated that the diffusivity of VOCs in the atmosphere was relatively high,indicating potential non-carcinogenic and carcinogenic risks 1.5-2 km ***,the process-based formation potentials of ozone and secondary organic aerosols(SOAs)were determined and indicated that N-methyl-2-pyrrolidone,dimethyl heptanone,and PGmE should be preferentially controlled to reduce the ozone formation potential,whereas the control of benzene and chlorobenzene should be prioritized to reduce the generation of *** results provide a basis for understanding the characteristics of VOC emission by biopharmaceutical industries and their diffusion,potentially allowing the development of measures to reduce health risks and secondary pollution.

关键词： Biopharmaceutical Volatile organic compound Priority pollutant Exposure risk Secondary pollution