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Voltage Sag Data Sampling Method for Papermaking Process Based on Compressed Sensing Technology
Yan Liu,Wei Tang,Wen-juan Shan 한국펄프·종이공학회 2019 펄프.종이기술 Vol.51 No.5
Important production equipment and sensitive load in the papermaking process are susceptible to the voltage sag event, and production may be interrupted in severe cases. Sampling and recording this event are conducive to judge and analyze the cause of production interruption. To effectively reduce the number of samples and storage costs of the voltage sag data, this paper studies and discusses a data sampling method based on compressed sensing technology, designs an experimental device for verifying the method, proposes relevant indicators and test steps for measuring the performance of the method. The results show that the voltage sag data per unit sampling time is much lower than the minimum value specified by the traditional data sampling method and the original signal can be accurately recovered. Moreover, combined with the actual situation of papermaking, the method is featured by good anti-noise robustness and strong scalability.
Quantum spin Hall state in monolayer 1T'-WTe<sub>2</sub>
Tang, Shujie,Zhang, Chaofan,Wong, Dillon,Pedramrazi, Zahra,Tsai, Hsin-Zon,Jia, Chunjing,Moritz, Brian,Claassen, Martin,Ryu, Hyejin,Kahn, Salman,Jiang, Juan,Yan, Hao,Hashimoto, Makoto,Lu, Donghui,Moore NATURE PUBLISHING GROUP 2017 NATURE PHYSICS Vol.13 No.7
<P>A quantum spin Hall (QSH) insulator is a novel two-dimensional quantum state of matter that features quantized Hall conductance in the absence of a magnetic field, resulting from topologically protected dissipationless edge states that bridge the energy gap opened by band inversion and strong spin-orbit coupling(1,2). By investigating the electronic structure of epitaxially grown monolayer 1T'-WTe2 using angle-resolved photoemission (ARPES) and first-principles calculations, we observe clear signatures of topological band inversion and bandgap opening, which are the hallmarks of a QSH state. Scanning tunnelling microscopy measurements further confirm the correct crystal structure and the existence of a bulk bandgap, and provide evidence for a modified electronic structure near the edge that is consistent with the expectations for a QSH insulator. Our results establish monolayer 1T'-WTe2 as a new class of QSH insulator with large bandgap in a robust two-dimensional materials family of transition metal dichalcogenides (TMDCs).</P>
Two new tirucallane triterpenoids from the leaves of Aquilaria sinensis
Jin Tang Cheng,Ya Qiong Han,Juan He,Xing De Wu,Liao Bin Dong,Li Yan Peng,Yan Li,Qin Shi Zhao 대한약학회 2013 Archives of Pharmacal Research Vol.36 No.9
Two new tirucallane triterpenoids, aquilacallanesA–B (1–2), together with 15 known compounds(3–17) were isolated from the leaves of Aquilaria sinensis. The structures of these new compounds were elucidated onthe basis of extensive spectroscopic analyses. All compoundswere evaluated for their cytotoxic activity againstfive human cancer cell lines. The known compounds,ursolic acid (7) and 5,7,40-trimethoxyflavone (14), exhibitedweak cytotoxic activity against some cells.
Wang Su Juan,Zhou Dan,Hu Yan Fei,Tang Cui Ming,Wang Qiao Zhi,Chen Shun Ling 한국물리학회 2021 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.79 No.3
In this work, we investigated bimetallic CumMn (m + n = 6, M = Fe, Co, Ni) clusters on the basis of the density functional theory at the M06L level. While changing the structure and composition, our team studied the geometrical structures, relative stabilities and electronic magnetic moments of these clusters. We found that the average atomic binding energies vary linearly with the number of doping atoms in the CumFen and the CumNin clusters. The values of electron affinity (EA) and the ionization potential (IP) for the CumNin clusters are closer to those of pure Cu clusters compared with the others. A negative value of the EA is only seen in CumFen clusters. The electronic magnetic moments of these clusters indicate that most of them exhibit a local minimum when doped with three atoms. Moreover, we further analyzed the HOMO–LUMO gaps, the natural population, and the geometrical structures.
AZD1480 Can Inhibit the Biological Behavior of Ovarian Cancer SKOV3 Cells in vitro
Sun, Zhao-Ling,Tang, Ya-Juan,Wu, Wei-Guang,Xing, Jun,He, Yan-Fang,Xin, De-Mei,Yu, Yan-Li,Yang, Yang,Han, Ping Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.8
Objective: To study the mechanism of effects of AZD1480 on the SKOV3 ovarian cancer cell line. Methods: The MTT method was used to assess cellular proliferation, flow cytometry for cellular apoptosis, the scratch test to determine migration, transwell chamber assays to detect cellular invasion, plate clone experiments to detect the clone forming ability and Western blotting to determine p-STAT3 protein levels. Results: The proliferation rate, migration ability, invasiveness and the clone forming ability of SKOV3 cells were reduced after treatment with AZD1480, while apoptosis rate and chemotherapeutic susceptibility were increased. After treatment with AZD1480 plus cisplatin, the apoptosis rate increased significantly while the expression level of p-STAT3 protein was decreased. Conclusion: AZD1480 can inhibit the proliferation, invasion, metastasis and clone formation of SKOV3 cells, induce cellulsar apoptosis, increase the chemotherapeutic sensitivity and reduce the expression level of p-STAT3 protein.
LU ZHANG,Peihui Yang,YAN-JIE GUO,JIAN-JUN LUO,GUI-MIN SUN,ZHI-HONG LIANG,YAN-JUAN TANG 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.3
A novel core – shell hybrid nanostructure was constructed by employing gold nanorod (AuNR)combined with rhodamine B (RB) as a core and silica as a shell. The poly(sodium 4-styr-enesulfonate) (PSS), a negatively charged polyelectrolyte, played the role of linker to electro-statically trap RB on AuNRs. Due to the °uorescence spectral overlap between RB and AuNRs at560 nm, the red °uorescence and enhanced green °uorescence of the hybrid nanostructures wereobserved obviously, which is capable for dual-color labeling. To reduce toxic side e®ects ofAuNRs, silica was coated on AuNRs as a shell to fabricate the novel core – shell hybrid nano-structure function as a dual-color labeling for cancer-cell imaging. The fabricated compositestructures were characterized by transmission electron microscopy (TEM), absorption spectrum,°uorescence spectrum, zeta potential measurements and laser scanning confocal microscope(LSCM). The experiment results con¯rmed that the obtained hybrid nanostructures providedexcellent photostability, biocompatibility and active surface for further biological functionali-zation. The novel composite structures may have great potential application in cell multicolorlabeling and imaging instead of traditional °uorescent dyes.