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3D vena contracta area in degenerative mitral regurgitation:cross-platform comparison in a single patient

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Journal of Geriatric cardiology 2022年第4期19卷 322-324页

作者： Shing ching chiu sun yue Division of cardiology Department of Medicine and GeriatricsUnited Christian HospitalHong KongChina

Quantification of degenerative mitral reg-urgitation(MR)by two-dimensional(2D)transthoracic echocardiography(TTE)and transesophageal echocardiography(TEE)is ***,obliquely oriented regurgitant jets limit inter-observer and intra-observer *** recent years,with increasingly sophisticated three-dimensional(3D)TTE and TEE systems that enable single-beat 3D color acquisition,3D vena contracta area(VcA)has emerged as an attractive indicator of MR *** overcomes geometric assumptions in 2D techniques and can be acquired in a single car-diac cycle,which is a major benefit in atrial ***,most studies of 3D VcA were perfo-rmed on the Philips TEE platform.[1-3]The perform-ance of the technique on GE systems and on 3D TTE is *** report 3D VcA measurements in a case of severe degenerative MR on 3D TTE(4V-D transducer,Vivid E95,GE Vingmed Ultrasound,Horten,Norway),and 3D TEE performed on GE(6VT-D transducer,Vivid E95,GE Vingmed Ultraso-und,Horten,Norway)and Philips(X7-2t transdu-cer,EPIc 7c,Philips Medical Systems,Andover,MA,USA).

关键词： degenerative overcome attractive

Recent advances in stretchable triboelectric nanogenerators for use in wearable bioelectronic devices

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Bio-Design and Manufacturing 2024年第4期7卷 566-590页

作者： Yaling Wang Pengcheng Zhu yue sun Pan Li Yanchao Mao college of Science Henan Agricultural UniversityZhengzhou 450002China Key Laboratory of Materials Physics of Ministry of Education School of PhysicsZhengzhou UniversityZhengzhou 450001China

Wearable bioelectronic devices have the capacity for real-time human health monitoring,the provision of tailored services,and natural interaction with smart ***,these wearable bioelectronic devices rely on conventional rigid batteries that are frequently charged or replaced and are incompatible with the skin,leading to a discontinuity in complex therapeutic tasks related to human health monitoring and human-machine *** triboelectric nanogenerator(TENG)is a high-efficiency energy harvesting technology that converts mechanical into electrical energy,effectively powering wearable bioelectronic *** study comprehensively overviews recent advances in stretchable TENG for use in wearable bioelectronic *** working mechanism of stretchable TENG is initially explained.A comprehensive discussion presents the approaches for fabricating stretchable TENG,including the design of stretchable structures and the selection of stretchable ***,applications of wearable bioelectronic devices based on stretchable TENG in human health monitoring(body movements,pulse,and respiration)and human-machine interaction(touch panels,machine control,and virtual reality)are ***,the challenges and developmental trends regarding wearable bioelectronic devices based on stretchable TENG are elaborated.

关键词： Stretchable Triboelectric nanogenerators Structure Human health monitoring Human-machine interaction

PathMarker:protecting web contents against inside crawlers

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cybersecurity 2019年第1期2卷 100-116页

作者： Shengye Wan yue Li Kun sun Department of computer Science college of William and Mary Williamsburg 23187-8795VAUSA Department of Information Sciences and Technology George Mason University Fairfax 22030VAUSA

Web crawlers have been misused for several malicious purposes such as downloading server data without permission from the website ***,armoured crawlers are evolving against new anti-crawler mechanisms in the arm races between crawler developers and crawler *** this paper,based on one observation that normal users and malicious crawlers have different short-term and long-term download behaviours,we develop a new anti-crawler mechanism called PathMarker to detect and constrain persistent distributed *** adding a marker to each Uniform Resource Locator(URL),we can trace the page that leads to the access of this URL and the user identity who accesses this *** this supporting information,we can not only perform more accurate heuristic detection using the path related features,but also develop a Support Vector Machine based machine learning detection model to distinguish malicious crawlers from normal users via inspecting their different patterns of URL visiting paths and URL visiting *** addition to effectively detecting crawlers at the earliest stage,PathMarker can dramatically suppress the scraping efficiency of crawlers before they are *** deploy our approach on an online forum website,and the evaluation results show that PathMarker can quickly capture all 6 open-source and in-house crawlers,plus two external crawlers(i.e.,Googlebots and Yahoo Slurp).

关键词： Anti-crawler mechanism Stealthy distributed inside crawler confidential Website content protection

controlling PcBM aggregation in P3HT/PcBM film by a selective solvent vapor annealing

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chinese Science Bulletin 2013年第22期58卷 2767-2774页

作者： sun yue HAN Yanchun LIU JianGang State Key Laboratory of Polymer Physics and chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences

A selective solvent vapor, i.e., cyclohexanone or isopropyl benzene, which is a poor solvent for poly(3-hexylthiophene-2,5-diyl) (P3HT) and a good solvent for fullerene derivative [6,6]-phenyl-c61-butyric acid methyl ester (PcBM), was employed to reduce the size of PcBM aggregates and prolong the formation time of big PcBM aggregates in P3HT/PcBM film. PcBM nucleates and aggregates of 10-20 nm scale form in the first few minutes annealing. Then the size of PcBM aggregates kept unchanged until annealing for 60 min. Finally, larger PcBM aggregates of micron-size formed hours later. On the contrary, the growth rate of PcBM aggregates was faster and their size was larger when treated with a good solvent vapor for both components. The P3HT crystallinity was the same with different types of annealing solvents, although the rate of P3HT self-organization was decreased after a selective solvent vapor annealing. Because of the smaller size of phase separation, the device annealed in a selective solvent vapor for 30 min had a higher PcE than that annealed in a good solvent vapor.

关键词：选择性溶剂蒸气处理聚集体退火薄膜控制富勒烯衍生物异丙基苯

Improvement of coercivity and corrosion Resistance of Nd-Fe-B Sintered Magnets with cu Nano-particles Doping

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Journal of Materials Science & Technology 2012年第10期28卷 927-930页

作者： c.sun W.Q.Liu H.sun M.yue X.F.Yi J.W.chen college of Materials Science and Engineering Beijing University of TechnologyBeijing 100124China Earth-panda Advance Magnetic Material co. Ltd.Anhui 231500China

Nd-Fe-B permanent magnets with a small amount of cu nano-particles doping have been prepared by con-ventional sintered method. Effects of cu content on magnetic properties, corrosion resistance, and oxidation properties of the magnets have been studied. It shows that the coercivity rises gradually, while the remanence decreases simultaneously with increasing cu doping amount. Microstructure observation reveals that cu ele- ment enriches mainly the Nd-rich phase. Autoclave test results show that the corrosion rate of the magnets decreases with increasing cu content. After oxidation, the maximum energy product loss of the magnets with 0 and 0.2 wt% cu nano-particles doping are 6.13% and 0.g9%, respectively. Therefore, it is concluded that cu nano-particles doping is a promising way to enhance the coercivity and corrosion resistance of sintered Nd-Fe-B magnets.

关键词： Nd-Fe-B cu nano-particles coercivity corrosion resistance Oxidation

characteristics and Origins of Suspended Pyrite in the Mixing Zone of the Yangtze Estuary

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Journal of Ocean University of china 2020年第4期19卷 801-810页

作者： PANG yue FAN Dejiang sun Xiaoxia sun Xueshi LIU Ming YANG Zuosheng Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of EducationOcean University of ChinaQingdao 266100China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology(QNLM)Qingdao 266061China center for Isotope Geochemistry and Geochronology Qingdao National Laboratory for Marine Science and Technology(QNLM)Qingdao 266061China

For a long time,most studies about pyrite have focused on sediments while only a few have focused on pyrite in *** this study,a method that combines the scanning electron microscopy(SEM)and the energy dispersive X-ray spectrometry(EDS)was used to compare pyrite particles suspended in water to those in associated bottom sediments,both obtained from the mixing zone of the Yangtze *** was found that the pyrite particles in the two media have similar morphologies and size *** particle morphology mainly includes two types,single crystal and aggregate,and the particle size mainly ranges from 0.5 to 2μ*** pyrite particles in water exhibit an increase in relative content towards the sea,and their transport and deposit processes are mainly affected by hydrodynamic *** is concluded that the pyrite particles in the suspended matter mainly derived from the resuspension of sediments,which are products of the early *** minerals may appear during the formation of pyrite,but are generally restricted by the diagenetic environment and local microenvironment.

关键词： Yangtze Estuary suspended matter pyrite resuspension authigenic mineral

Preparation and application of a novel orotic acid chelating resin for removal of cu(Ⅱ) in aqueous solutions

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chinese chemical Letters 2013年第8期24卷 747-750页

作者： yue sun Zhi-chao Li Yan Xu School of civil Engineering Southeast University

A novel chelating resin OABA,capable of removing cu（Ⅱ） from aqueous solution,was synthesized via the reaction of macroporous chloromethylated PS-DVB copolymer beads with orotic *** elemental analysis（EA）,Fourier transform infrared spectroscopy（FT-IR）,and scanning electron microscopy microscope-energy dispersive X-ray spectroscopy（SEM-EDS） were used in the characterization of the synthesized chelating ***,static batch adsorption experiments were conducted at different initial concentrations and *** showed good adsorption capacity for cu（Ⅱ） and the equilibrium data could be well matched with the Freundlich isotherm *** sodium chloride and calcium chloride in solutions favored the cu（Ⅱ） ***,the desorption process of cu（Ⅱ） was tested and over 90%regeneration efficiency for the spent OABA was achieved at ammonia concentrations ranging from 1.0%to 2.0%.The results suggested that OABA would be a potential alternative adsorbent for cu（Ⅱ）,even with other heavy metal ion treatments of wastewater.

关键词： Orotic acid chelating resin cu(Ⅱ) Adsorption

Highly linear polyethylenes using the2-(1-(2,4-dibenzhydrylnaphthylimino)ethyl)-6-(1-(arylimino)ethyl)-pyridylcobalt chlorides: synthesis, characterization and ethylene polymerization

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Science china chemistry 2016年第10期59卷 1291-1300页

作者： Erlin yue Yanning Zeng Wenjuan Zhang Yang sun Xiao-Ping cao Wen-Hua sun cAS Key Laboratory of Engineering Plastics Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of Sciences State Key Laboratory of Applied Organic chemistry College of Chemistry and Chemical Engineering Lanzhou University

The series of 2-（1-（2,4-dibenzhydrylnaphthylimino）ethyl）-6-（1-（arylimino）ethyl）pyridine derivatives and their cobalt chlorides （col-co5） were synthesized and fully characterized. The representative complexes co2 and co3 were confirmed by single crystal X-ray diffraction analyses, indicating pseudo-square-pyramidal geometry around the cobalt centre. All cobalt complexes, activated with either methylaluminoxane （MAO） or modified methylaluminoxane （MMAO）, exhibited high activities towards ethylene polymerization, and produced polyethylenes with high molecular weight and highly linear feature as well as unimodal distribution.

关键词： cobalt complexes ethylene polymerization highly linear polyethylene unimodal distribution

Organoborane cyclophanes with flexible linkers: Dynamic coordination and photo-responsive fluorescence

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chinese chemical Letters 2023年第4期34卷 262-265页

作者： Zengming Fan Wenting sun yue Yang Jiaxiang Guo chuandong Dou yue Wang State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China

Stimuli-responsive macrocycles are of importance for synthetic chemistry and smart materials. In this manuscript, we report two novel organoborane cyclophanes, which were successfully synthesized by ruthenium-catalyzed olefin metathesis. They are composed of one/two boron-doped helicene π-skeletons and flexible alkyl chain linkers, thus representing a new kind of non-conjugated organoborane macrocycles. Their cyclic structures and photophysical properties, as well as Lewis acidity were theoretically and experimentally investigated. Notably, two enantiomers in one single crystal are observed for one organoborane cyclophane, owning to the presence of helical π-framework in its cyclic structure. Moreover, their Lewis acid-base adducts may dissociate in the excited state and thus display intriguing photo-responsive fluorescence properties, which can be further modulated by temperature. This study thus provides a novel design strategy for non-conjugated organoborane macrocycles, which may promote the development of stimuli-responsive macrocyclic materials with fascinating properties.

关键词： cyclophane Organoborane Macrocycle coordination Photo-responsive fluorescence