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1,220 results on '"Shen, Yuanyuan"'

6. Research Progress on the Influence of Microorganisms in Cutting Fluid on Rust Resistance

Author

LI Xuwen, SHEN Yuanyuan, LIU Qingkun, ZHANG Junzhuang, DONG Lihua, DONG Yaohua

Subjects
cutting fluid；microorganism；rust resistance；restrain, Materials of engineering and construction. Mechanics of materials, TA401-492, Technology
Abstract

Microorganisms can cause the cutting fluid to deteriorate and destroy the anti-rust properties of the cutting fluid，thereby resulting in the corrosion of workpieces and machine tools.Firstly，this article outlined the different invasion pathways of microorganisms in cutting fluids，analyzed the types of microorganisms in cutting fluids and the microbial concentrations at different stages，and summarized the changes in microbial strains.Secondly，the influence of microorganisms on the rust resistance of cutting fluid was summarized in detail from three aspects:the failure of effective components in cutting fluid，the decrease in environmental pH value and the corrosion of microbial biofilm.Finally，the current methods for controlling and inhibiting microorganisms in cutting fluids were compared and analyzed，and reference suggestions were proposed.

Published
2024
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13. Intrinsically projectively linked graphs

Author

Foisy, Joel, Galván, Luis Ángel Topete, Knowles, Evan, Nolasco, Uriel Alejandro, Shen, Yuanyuan, and Wickham, Lucy

Subjects
Mathematics - Combinatorics, Mathematics - Geometric Topology, 57M15, 05C10, 57K10
Abstract

A graph is intrinsically projectively linked (IPL) if its every embedding in projective space contains a nonsplit link. Some minor-minimal IPL graphs have been found previously. We determine that no minor-minimal IPL graphs on 16 edges exists and identify new minor-minimal IPL graphs by applying $\Delta-Y$ exchanges to $K_{7}-2e$. We prove that for a nonouter-projective-planar graph $G$, $G+\bar{K}_{2}$ is IPL and describe the necessary and sufficient conditions on a projective planar graph $G$ such that $G+\bar{K}_{2}$ is IPL. Lastly, we deduce conditions for $f(G + \bar{K_{2}})$ to have no nonsplit link, where $G$ is projective planar, $\bar{K_{2}} = \{w_{0},w_{1}\}$, and $f(G + \bar{K_{2}})$ is the embedding onto $\mathbb{R}P^{3}$ with $f(G)$ in $z=0$, $w_{0}$ above $z=0$, and $w_{1}$ below $z=0$ such that every edge connecting ${w_{0},w_{1}}$ to $G$ avoids the boundary of the 3-ball, whose antipodal points are identified to obtain projective space.

Published
2022

14. Links in projective planar graphs

Author

Foisy, Joel, Galván, Luis Ángel Topete, Knowles, Evan, Nolasco, Uriel Alejandro, Shen, Yuanyuan, and Wickham, Lucy

Subjects
Mathematics - Combinatorics, Mathematics - Geometric Topology, 57M15, 05C10
Abstract

A graph $G$ is nonseparating projective planar if $G$ has a projective planar embedding without a nonsplit link. Nonseparating projective planar graphs are closed under taking minors and are a superclass of projective outerplanar graphs. We partially characterize the minor-minimal separating projective planar graphs by proving that given a minor-minimal nonouter-projective-planar graph $G$, either $G$ is minor-minimal separating projective planar or $G \dot\cup K_{1}$ is minor-minimal weakly separating projective planar, a necessary condition for $G$ to be separating projective planar. One way to generalize separating projective planar graphs is to consider type I 3-links consisting of two cycles and a pair of vertices. A graph is intrinsically projective planar type I 3-linked (IPPI3L) if its every projective planar embedding contains a nonsplit type I 3-link. We partially characterize minor-minimal IPPI3L graphs by classifying all minor-minimal IPPI3L graphs with three or more components, and finding many others with fewer components.

Published
2022

25. CSF proteomics identifies early changes in autosomal dominant Alzheimer’s disease

Author

Noble, James M., Day, Gregory S., Graff-Radford, Neill R., Voglein, Jonathan, Allegri, Ricardo, Mendez, Patricio Chrem, Surace, Ezequiel, Berman, Sarah B., Ikonomovic, Snezana, Nadkarni, Neelesh, Lopera, Francisco, Ramirez, Laura, Aguillon, David, Leon, Yudy, Ramos, Claudia, Alzate, Diana, Baena, Ana, Londono, Natalia, Mathias Jucker, Sonia Moreno, Laske, Christoph, Kuder-Buletta, Elke, Graber-Sultan, Susanne, Preische, Oliver, Hofmann, Anna, Ikeuchi, Takeshi, Kasuga, Kensaku, Niimi, Yoshiki, Ishii, Kenji, Senda, Michio, Sanchez-Valle, Raquel, Rosa-Neto, Pedro, Fox, Nick, Cash, Dave, Lee, Jae-Hong, Roh, Jee Hoon, Riddle, Meghan, Menard, William, Bodge, Courtney, Surti, Mustafa, Takada, Leonel Tadao, Farlow, Martin, Chhatwal, Jasmeer P., Sanchez-Gonzalez, V.J., Orozco-Barajas, Maribel, Goate, Alison, Renton, Alan, Esposito, Bianca, Karch, Celeste M., Marsh, Jacob, Cruchaga, Carlos, Fernandez, Victoria, Gordon, Brian A., Fagan, Anne M., Jerome, Gina, Herries, Elizabeth, Llibre-Guerra, Jorge, Levey, Allan I., Johnson, Erik C.B., Seyfried, Nicholas T., Schofield, Peter R., Brooks, William, Bechara, Jacob, Bateman, Randall J., McDade, Eric, Hassenstab, Jason, Perrin, Richard J., Franklin, Erin, Benzinger, Tammie L.S., Chen, Allison, Chen, Charles, Flores, Shaney, Friedrichsen, Nelly, Hantler, Nancy, Hornbeck, Russ, Jarman, Steve, Keefe, Sarah, Koudelis, Deborah, Massoumzadeh, Parinaz, McCullough, Austin, McKay, Nicole, Nicklaus, Joyce, Pulizos, Christine, Wang, Qing, Mishall, Sheetal, Sabaredzovic, Edita, Deng, Emily, Candela, Madison, Smith, Hunter, Hobbs, Diana, Scott, Jalen, Levin, Johannes, Xiong, Chengjie, Wang, Peter, Xu, Xiong, Li, Yan, Gremminger, Emily, Ma, Yinjiao, Bui, Ryan, Lu, Ruijin, Martins, Ralph, Sosa Ortiz, Ana Luisa, Daniels, Alisha, Courtney, Laura, Mori, Hiroshi, Supnet-Bell, Charlene, Xu, Jinbin, Ringman, John, Shen, Yuanyuan, Timsina, Jigyasha, Heo, Gyujin, Beric, Aleksandra, Ali, Muhammad, Wang, Ciyang, Yang, Chengran, Wang, Yueyao, Western, Daniel, Liu, Menghan, Gorijala, Priyanka, Budde, John, Do, Anh, Liu, Haiyan, Gordon, Brian, Llibre-Guerra, Jorge J., Joseph-Mathurin, Nelly, Maschi, Dario, Wyss-Coray, Tony, Pastor, Pau, Renton, Alan E., Surace, Ezequiel I., Alvarez, Ignacio, Ringman, John M., Allegri, Ricardo Francisco, Seyfried, Nicholas, Day, Gregg S., Wu, Qisi, Fernández, M. Victoria, Tarawneh, Rawan, Morris, John C., Ibanez, Laura, and Sung, Yun Ju

Published
2024
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42. A Music Teaching Model Combining Deep Learning in the Perspective of Ecological Aesthetic Education: The Integration of Traditional Music Culture

Author

Shen Yuanyuan

Subjects
eco-beauty, deep learning, music teaching model, traditional music culture, 00a66, Mathematics, QA1-939
Abstract

In the contemporary educational environment, the protection and inheritance of traditional music culture faces challenges. The current diverse needs of music education urgently require innovative teaching models to integrate traditional music culture and enhance students’ aesthetic and cultural literacy. The eco-beauty perspective provides a new educational idea that emphasizes the harmonious coexistence with nature and promotes all-around development of students. Combining traditional music culture and modern education technology effectively can be achieved by combining deep learning technology and new paths in music education. This study explores the music teaching model that integrates traditional music culture with deep learning technology, under the perspective of ecological aesthetic education. The study utilizes a mixed methodology, combines quantitative and qualitative Analysis, and compares the experimental design to verify the effectiveness of the teaching model. In this paper, implementing the music teaching model under the perspective of ecological aesthetic education has improved students’ performance in music perception ability, music emotion expression, music composition and performance, and music knowledge theory. The average increase in music perception ability of the experimental class students is 5.18 points, and the average increase in music composition and performance ability is 11.57 points, showing the impact of this teaching mode on the overall improvement of students’ music ability. In this paper, the music teaching mode combining deep learning under the perspective of ecological aesthetic education can effectively integrate traditional music culture, promote the improvement of students’ music literacy, and provide a new teaching strategy for the inheritance and development of traditional music culture.

Published
2024
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46. Probing Weyl Physics with One-dimensional Sonic Crystals

Author

Fan, Xiying, Qiu, Chunyin, Shen, Yuanyuan, He, Hailong, Xiao, Meng, Ke, Manzhu, and Liu, Zhengyou

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Other Condensed Matter
Abstract

Recently, intense efforts have been devoted to realizing classical analogues of various topological phases of matter. In this Letter, we explore the intriguing Weyl physics by a simple one-dimensional sonic crystal, in which two extra structural parameters are combined to construct a synthetic three-dimensional space. Based on our underwater ultrasonic experiments, we have not only observed the synthetic Weyl points directly, but also probed the novel reflection phase singularity that connects inherently with the topological robustness of Weyl points. As a smoking gun evidence of the topological states of matter, the presence of nontrivial interface modes has been demonstrated further. All experimental data agree well with our full-wave simulations. As the first realization of topological acoustics in synthetic space, our study exhibits great potential of probing high-dimensional topological phenomena by such easily-fabricated and -detected low-dimension acoustic systems., Comment: Accepted by PRL

Published
2019
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