Generalized Inverses and Solutions to Equations in Rings with Involution

Yue Sui,Junchao Wei 경북대학교 자연과학대학 수학과 2024 Kyungpook mathematical journal Vol.64 No.1

In this paper, we focus on partial isometry elements and strongly EP elements or a ring. We construct characterizing equations such that an element which both group invertible and MP-invertible, is a partial isometry element, or is strongly EP, exactly when these equations have solution in a given set.

A Study on the Problems and Solutions to China’s Customs Agency System

Sui Yue,장은희 한국무역경영학회 2023 한국무역경영연구 Vol.- No.32

The Customs Declaration Agency System in China is a special civil legal act that emerged with the development of the commodity economy. This paper analyzed the historical background and legislative status of the customs declaration agency system in the two major legal systems, deeply explores the political, economic, and social background of the establishment of the agency system. In addition, the step-by-step development process of China's Customs Reporting Agency System was examined, and the customs reporting agency system and other agency systems were compared and analyzed in detail. There is a close relationship between them, but there are also essential differences, so it is necessary to use this system efficiently with a clear understanding of China's Customs Reporting Agency System. In China, Customs Agent Mode is a large part of all customs modes, and has gradually become a major customs declaration form. On the other hand, however, because China's market economy is still relatively short, the establishment of a legal framework in the area of Customs Agents is relatively weak, and there is still an ambiguous aspect of the legal nature of customs agents. Accordingly this paper analyzes the problems of the Chinese Customs Reporting Agent System in depth and presents various countermeasures, including development measures, completion of legislation, and improvement of the legal responsibilities of the relevant parties. Furthermore, this paper not only analyzed the existing Customs Agent problem in simple terms, but also suggested how to develop the unified Customs Agent Law and the Legal Status of the organization, and further suggested ways to improve the administrative responsibility of Customs Agents.

Analysis on the Influence of International Situation on China and Korea Ttrade

Sui Yue 한중경제문화학회 2022 한중경제문화연구 Vol.19 No.-

The role of CTNNB1 and LEF1 in feather follicles development of Anser cygnoides and Anser anser

Yue Sun,Yuxuan Zhou,Petunia Msuthwana,Jing Liu,Chang Liu,Cornelius Tlotliso Sello,Yupu Song,Ziqiang Feng,Shengyi Li,Wei Yang,Yunpeng Xu,Xiaomin Yan,Chuanghang Li,Yujian Sui,Jingtao Hu,Yongfeng Sun 한국유전학회 2020 Genes & Genomics Vol.42 No.7

Background Wingless-types/beta-catenin (Wnt/β-catenin) signaling pathway is one of the most extensively studied transcriptional cascades involved in various types of organogenesis including embryonic and postnatal development. Downy feather quantity is primarily affected by follicular development and gene regulations. Objective This research was aimed to investigate the role of catenin beta-1(CTNNB1) and lymphoid enhancerbinding factor-1 (LEF1) on feather follicles development at different developmental stages. Methods Fluorescence quantitative PCR, Western-blot and immunohistochemical methods were used in Anser cygnoides and Anser anser embryos (E12, E13 E18, and E28) and after birth gosling stages (G18, G48, G88) for gene expression analysis. Results CTNNB1 and LEF1 genes were expressed in Anser cygnoides and Anser anser at different embryonic and after-birth gosling developmental stages and the expression levels were significantly different in different stages (p < 0.05). The mRNA expression of CTNNB1 and LEF1 genes reached the highest level at D88 in Anser cygnoides, while the highest expression levels were at D18 and D88 in Anser anser, and the expression levels of CTNNB1 genes at D88 in all embryonic stages were significantly lower than after-birth stages. CTNNB1 and LEF1 protein expression were the highest at E12 and E28 for Anser cygnoides feather follicles development. While at a similar stage for Anser anser, the expression of CTNNB1 and LEF1 protein was the highest at D48 and D18. Protein expression at embryonic stages was in the epidermis (E) and the hair basal plate (P), the expression site for after-birth stages was in the dermal papilla (DP). Conclusion Our study illustrated that CTNNB1 and LEF1 has an impact on Anser cygnoides and Anser anser feather follicles growth and development.

Feature of vortex core gyration affected by Dzyaloshinskii-Moriya interaction

Wei Maobin,Hu Yue,Wu Chengcheng,Sui Yingrui,Li Huanan 한국물리학회 2023 Current Applied Physics Vol.46 No.-

The effects of Dzyaloshinskii-Moriya interaction (DMI) on vortex core gyration excited by an out-of-plane polarized current is investigated through micromagnetic simulation. The simulation results demonstrate that the DMI not only widens the current density range for gyration, but also greatly increases the frequency and velocity of gyration. On the premise that DMI is large enough and the vortex configurations can simultaneously be maintained, the stable gyration orbit changes from a circle, to a ring-like and to a bird-nest-like trajectory. Furthermore, by comparing the data of different-size nanodisks, it can be seen that the vortices in smaller and thinner disks can achieve higher velocity and larger amplitude gyration, while in larger and thicker disks, the magnetic vortices can obtain higher oscillation frequency. The conclusions in this research add to the potential applications of magnetic vortex in nano-oscillaors.

Investigating Trends in Research on China’s Sport Policy Using Social Network Analysis and Topic Modeling

Yongdi Wang,김경식,Haixia Yue,Zhentao Liu,Sihong Sui,Wang Mingyi 아시아스포츠융합과학회 2023 Asia Pacific Journal of Applied Sport Sciences Vol.4 No.1

PURPOSE The purpose of the current study was to examine the research trend on China’s sport policy. We proposed three research questions: (a) have the research keywords for China’s sport policy changed over time; (b) which research keywords best represent the past 30 years of research on China’s sport policy; and (c) what are the primary topics of that research? METHOD We searched the core journals on CNKI to determine trends in 30 years of research on China’s sport policy and directions for future research. In order to achieve this goal, we conducted social network analysis using 437 articles published between 1993 and 2020. RESULT First, we found that China’s sport policy-related keywords did not change significantly. Second, the primary keywords over this 30-year period included the following: sport, policy, China, development, system, implementation, innovation, and industry. Third, sport policy scholars focused most often on the sport industry, followed by sport policy development, school sports, sport governance, and mass sports. CONCLUSION To develop sport policy research in China further, private academic organizations (e.g., China’s Society for Sport Policy) need to conduct sport policy studies.

Investigating Research Trend of Chinese Wushu: Application of Social Netword Analysis

( Yongdi Wang ),( Kyung Kim ),( Sihong Sui ),( Haixia Yue ) 한국융합과학회 2022 한국융합과학회 국제학술대회자료집 Vol.2022 No.0

Since the founding of the People's Republic of China more than 70 years ago, Wushu, as an organic component of Chinese sports, culture, education and health undertakings, has continuously improved its scientific, in-depth and systematic level of research. It can be divided into the following stages: from the founding of the People's Republic of China to the early stage of the reform and opening up, the learning, training and competition of Wushu produced research results, and scientific research awareness was generally formed; From the reform and opening up to the mid-1990s, the research on Wushu teaching and training continued to deepen, and the research on history, culture and education rose; From the end of the 1990s to the Beijing Olympic Games, the research on the basic theory of Wushu was fruitful, and the dissemination and development became the focus theme; From the Beijing Olympic Games to the new era, Wushu research is more integrated into the national strategy, and the academic system structure is gradually improved (Guo et al., 2021). Key words Network analysis method is a very useful method to study the knowledge structure and research trends of specific topics (Kim et al., 2020; Zhang & Kim, 2021).First, the co word analysis was conducted to identify trends in leisure studies Second, a centrality analysis was performed to identify keywords with influence within quantified abstract data, a cohesive group analysis to identify detailed research areas within the network (Kim, 2018). This research aims to explore the research trend of Chinese Wushu through keyword network analysis. The purpose of this study is to identify research trends by analyzing the frequency of simultaneous occurrence of keywords and identifying keyword networks. To this end, it has established the following two research questions. First of all, as time goes by, what changes have taken place in the research trend of Chinese Wushu? Second, what is the relationship between keywords in Wushu research? Method In order to study the knowledge structure and development trend of Chinese Wushu, we collected 10 core journals from 19 core academic journals on CNKI. Through the analysis and collation of the data, this study divides the data into four periods: the 1990s, the 2000s, the 2010s and the 2020. Through CNKI retrieval of key words related to Wushu, 2891 core journals were finally selected to form bibliographic information for network analysis. Bibliographic information includes author, paper title, journal name, abstract, key words, publication year, etc. Through the analysis and collation of data, this study selected 10 Chinese core journals, a total of 2225 core journals. Findings and Discussions Among them, Chinese Wushu were most published in sports culture guides, reaching 442 articles (19.87%); There are 341 journals of Wuhan Institute of Physical Education (15.33%), 270 journals of Beijing Institute of Physical Education (12.12%), 228 journals of Chengdu Institute of Physical Education (10.25%), etc. The history of martial arts and the training of martial arts athletes show the phenomenon of chain fracture. The culture, movement and education of martial arts have been developing since 1992. Since 2000, the research on martial arts has increased significantly, with the largest increase in the research on martial arts culture; Secondly, the research on martial arts from 2000s-2010s is booming, but the development of martial arts will decline after 2020s. In the next 10 years, there will be a trend of unstable development, which may lead to less and less research on martial arts, and thus become an unexpected topic. The historical stability of martial arts is good, the degree of concern is low, and there may be a slight upward trend; The development of martial arts culture and martial arts education shows a downward trend; The movement of martial arts is on the rise. The central analysis shows that the key words such as martial arts culture and martial arts education are the core content of martial arts research and have high influence.

Construction and Expression of an Eukaryotic Expression Vector Containing the IER3 Gene

Wang, Zhen,Yu, Hong-Sheng,Yao, Ru-Yong,Qiu, Wen-Sheng,Yue, Lu,Sui, Ai-Hua,Liu, Xiang-Ping,Liu, Shi-Hai Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.1

Background: More and more research indicate that the immediately early response gene 3 (IER3) is involved inmany biological provesses, such as apoptosis and immunoreaction, as well as viral infection, tumorigenesis and tumour progression. Methods: Here we describe the construction of an eukaryotic expression vector containing IER3 gene and its expression in A549 cells as assessed through fluorescence microscopyand Western-blotting. Results: Fluorescence detection displayed that GFP in cytoplasm was high during 48 and 72 hours post-transfection. In addition, Western blotting showed significant increase in IER3 gene expression in the transfected cells compared with controls. Conclusion: The recombinate plasmid expression vector was constructed successfully, which may provide a basis for further exploration of function of IER3 in lung cancer.

Electroacupuncture Promotes Motor Function Recovery in MCAO/R Rats by Activating Astrocyte-Related PI3K/AKT Pathway

Zhang Xiao-Qing,Wang Yi-He,Sun Li,Dong Bao-Qiang,Sui Yue-Jiao,Dong Jia-Zi,Han Yang 사단법인약침학회 2022 Journal of Acupuncture & Meridian Studies Vol.15 No.5

Background: Electroacupuncture (EA) is a widely used traditional Chinese medicine method to manage various diseases, including cerebral ischemia-reperfusion injury (CIRI). Objectives: We assessed the neuroprotective effects of EA and examined its mechanism in a rat model of the middle cerebral artery occlusion-reperfusion (MCAO/R). The gait analysis was performed to evaluate the neuroprotective effects. Western blot and immunohistochemistry assays were carried out to determine the molecular mechanisms of EA. Methods: Male SD rats were randomly divided into the sham operation group, right MCAO/R group, and EA group. EA was administered every day (4/20 Hz, 10 min/1 d) at the following acupoints: Baihui (DU20), Yintang (EX-HN3), and Zusanli (ST36). Gait and motor function were analyzed from day 8 onward. Results: The plantar support and balance coordination of MCAO/R rats decreased, and the cellular structure of the ischemic penumbra was unclear. EA improved the gait dynamics of the rats, adjusted the cell structure, further activated astrocytes, and increased the expression and phosphorylation of phosphoinositide 3-kinase/protein kinase B (PI3K/PKB or AKT). Conclusion: EA promoted astrocyte-related effects in the rat model. Our findings suggest that the neuroprotective mechanism of EA may be related to the activation of the PI3K/ AKT signaling pathway. The intervention enhanced brain protection and improved motor functions.

Scutellaria Extract Decreases the Proportion of Side Population Cells in a Myeloma Cell Line by Down-regulating the Expression of ABCG2 Protein

Lin, Mei-Gui,Liu, Li-Ping,Li, Chen-Yin,Zhang, Meng,Chen, Yuling,Qin, Jian,Gu, Yue-Yu,Li, Zhi,Wu, Xin-Lin,Mo, Sui-Lin Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.12

Background and Aims: Scutellaria is one of the most popular traditional Chinese herbal remedies against various human diseases, including cancer. In this study, we examined the active effects of Scutellaria extract and its main flavonoid constituents on the proportion of side population cells within human multiple myeloma cell line RPMI8226 in vitro and explored the potential molecular mechanisms involved. Materials and Methods: The contents of flavonoids in ethanolic extract of Scutellaria baicalensis Georgi were determined using high performance liquid chromatography. The antiproliferative effect of the ethanolic extract on RPMI-8226 was determined by CCK assay. Apoptosis was measured by annexin combining with propidium iodide in a flow cytometer. Cell cycle analysis was performed by propidium iodide staining in combination with flow cytometry analysis. Hoechst 33342 exclusion assay was used for the identification of side population within RPMI8226 cells. The expression of ABCG2 protein was assessed by Western blotting assay. Results: The content of major flavonoids constitutents of Scutellaria extract was baicalin (10.2%), wogonoside (2.50%), baicalein (2.29%), and wogonin (0.99%), respectively. The crude Scutellaria extract did not show significant anti-proliferative effect, apoptosis induction and cell cycle arrest in RPMI-8226 within the concentrations of $1-75{\mu}g/mL$. However, the ethanolic extract, baicalein, wogonin and baicalin reduced the side population cells in RPMI-8226, and data showed that baicalein and wogonin had stronger inhibitory effects. Correspondingly, they also exhibited significant effects on decreasing the expression level of ABCG2 protein in RPMI-8226 in vitro. Conclusions: Our results for the first time demonstrated a novel mechanism of action for Scutellaria extract and its main active flavonoids, namely targeting SP cells by modulating the expression of ABCG2 protein. This study provides an insight for new therapeutic strategies targeting cancer stem cells of multiple myeloma.