地坑窑之于江南民居地下室的生态宜居启示

YUFEI CHEN 한국동양예술학회 2019 동양예술 Vol.44 No.-

伴随着经济水平的不断提高,科技能力的不断进步,国民生态意识的不断增强,本在不断加速的城市化进程中逐渐被湮没的窑洞民居形式以其独具的生态优势重获盛名,越来越多的专家学者对窑洞进行了深入研究。现今,窑洞不仅在其发祥地黄土高原区掀起了燎原之势,甚至跨区域以其变体形式在全国各地如雨后春笋涌现。本文欲将地坑窑与其在江南的变体形式之一——民居地下室进行对比分析,以期从中获取生态养分,同时结合现代生态技术,为将江南民居地下室转变为舒适健康的居住空间的探索提供思路。

The Enlightenment of “the Harmony between Heaven and Human” Ecological View to the Ecological Development of Modern Mountainous Scenic Areas

( Chen Yufei ),( Wang Qin ) 한국동양예술학회 2018 동양예술 Vol.41 No.-

This paper, taking the gardening view of the harmony between heaven and human in Chinese classical garden as the guiding concept, starts from the existing problems in the development of mountainous scenic areas. And then it takes the design scheme of Qianshan Ecological Scenic Spot in Anshan as an example to elaborate. Finally, it provides a paradigm for the ecological development of the contemporary Urban Forest scenic spots - Ecological Feedback Model, which lays a solid foundation for China's modern Landscape City.

Graphitization of graphene oxide films under pressure

Chen, Xianjue,Deng, Xiaomei,Kim, Na Yeon,Wang, Yu,Huang, Yuan,Peng, Li,Huang, Ming,Zhang, Xu,Chen, Xiong,Luo, Da,Wang, Bin,Wu, Xiaozhong,Ma, Yufei,Lee, Zonghoon,Ruoff, Rodney S. Elsevier 2018 Carbon Vol.132 No.-

<P><B>Abstract</B></P> <P>Lightweight, flexible graphite foils that are chemically inert, high-temperature resistant, and highly electrically and thermally conductive can be used as component materials in numerous applications. “Graphenic” foils can be prepared by thermally transforming graphene oxide films. For this transformation, it is desirable to maintain a densely packed film structure at high heating rates as well as to lower the graphitizing temperatures. In this work, we discuss the pressure-assisted thermal decomposition of graphene oxide films by hot pressing at different temperatures (<I>i.e.</I>, 300 °C, 1000 °C, or 2000 °C). The films pressed at 1000 °C or 2000 °C were subsequently heated at 2750 °C to achieve a higher degree of graphitization. The combination of heating and pressing promotes the simultaneous thermal decomposition and graphitic transformation of G-O films. Films pressed at 2000 °C as well as films further graphitized at 2750 °C show high chemical purity, uniformity, and retain their flexibility. For films pressed at 2000 °C and then further heated at 2750 °C, the mechanical performances outperform the reported values of the “graphite” foils prepared by calendering exfoliated graphite flakes; the electrical conductivity is ∼3.1 × 10<SUP>5</SUP> S/m and the in-plane thermal conductivity is ∼1.2 × 10<SUP>3</SUP> W/(m·K).</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

The Effect of Influencer Influence on Recommendation Intention: Focused on TikTok Live Commerce in China

Yufei Chen,Seogju Chang ASCONS 2021 IJASC Vol.3 No.3

Background/Objectives : This study takes focusing on TikTok live commerce in China, divides the influence of internet celebrity into 2 factors, such as charm and professionalism, and finds out its influence on the intention of recommendation and the media effect of input and perceived value. In order to confirm this argument, this study makes an empirical analysis on Chinese native Chinese and Chinese students in Korea. Methods/Statistical analysis :The analysis results show that the charm and professionalism of online red have a positive impact on recommendation intention, and confirm the media role of investment and perceived value in the relationship between internet celebrity`s influence and recommendation intention. Findings : Based on the above results, it is confirmed that the charm and professionalism of internet celebrity are important reasons to improve users' recommendation intention. Improvements/Applications : In addition, the enlightenment is put forward through this study, and the limitations and future research directions are discussed.

The Enlightenment of “the Harmony between Heaven and Human” Ecological View to the Ecological Development of Modern Mountainous Scenic Areas

YUFEI CHEN,Qin Wang 한국동양예술학회 2018 동양예술 Vol.41 No.-

This paper, which takes the gardening view of "the harmony between heaven and human" in Chinese classical garden as the guiding concept, starts from the existing problems in the development of mountainous scenic areas. And then it takes the design scheme of Qianshan Ecological Scenic Spot in Anshan as an example to elaborate. Finally it provides a paradigm for the ecological development of the contemporary "Urban Forest" scenic spots - "Ecological Feedback Model", which lays a solid foundation for China's modern "Landscape City".

地坑窯之于江南民居地下室的生態宜居啓示

진옥비 ( Chen Yufei ) 한국동양예술학회 2019 동양예술 Vol.44 No.-

With economy improve, the constant advancement of national level, enhance national ecological consciousness, this is accelerating urbanization gradually buried in the cave dwellings in the form is known for its unique ecological advantage of regain fame, more and more experts and scholars to cave in the study. Interregional the cave today, not only in its birthplace and in loess plateau regions by prairie, even in the form of the body in the same in all parts of the country such as mushrooms to the fore. The pit will be to a kiln with its dwellings -- one of the variant form in the south of the basement for comparative analysis, in order to obtain the ecological food and, at the same time, folk houses, south of Yangtze River will be combining a modern ecological technology, for the basement to turn into a comfortable healthy living space exploration provides ideas.

An important link between the gut microbiota and the circadian rhythm: imply for treatments of circadian rhythm sleep disorder

Yufei Tian,Wei Yang,Gang Chen,Chuanlong Men,Yifan Gu,Ruilin Zhang,Laiyou Wang,Xin Zhang 한국식품과학회 2022 Food Science and Biotechnology Vol.31 No.2

Currently, gut microbiota living in the gastrointestinaltract, plays an important role in regulatinghost’s sleep and circadian rhythms. As a tool, gut microbiotahas great potential for treating circadian disturbanceand circadian insomnia. However, the relationship betweengut microbiota and circadian rhythms is still unclear, andthe mechanism of action has still been the focus ofmicrobiome research. Therefore, this article summarizesthe current evidences associating gut microbiota with factorsthat impact host circadian rhythms neurology sleepdisorder. Moreover, we discuss the changes to these systemsin sleep disorder and the potential mechanism ofintestinal microbiota in regulating circadian rhythms neurologysleep disorder via microbial metabolites. Meanwhile,based on the role of intestinal flora, it is provided anovel insight into circadian related insomnia and will bebenefit the dietary treatment of circadian disturbance andthe circadian related insomnia.

CO2 capture performance optimization of MgO-based adsorbent modified by alkali metal salt

Yufei Sun,Qiuwan Shen,Xin Zhang,Gaokui Chen,Kuanyu Zhu,Shian Li 한양대학교 청정에너지연구소 2024 Journal of Ceramic Processing Research Vol.25 No.4

With the increasingly serious problem of climate warming in recent years, CO2 capture technology has been widely concernedby countries all over the world. One of the effective methods to reduce CO2 emissions is to capture CO2 after combustion. Alkali metal salt modified MgO-based adsorbents were synthesized by hydration impregnation method to obtain high efficientadsorbents in this study. The CO2 cyclic adsorption capacity test was carried out in a fixed bed experimental setup. Themicrostructure of the adsorbent was characterized by XRD, SEM and BET techniques. The adsorption properties and cyclestability of alkali metal salts modified MgO adsorbents were deeply studied. The results show that the adsorbent with 10wt% K2CO3-MgO has the best adsorption performance and cyclic stability. The initial adsorption capacity is 89 mg/g·sorbent,and the adsorption capacity of the 15th cycle is 63 mgCO2/ g·sorbent. 10 wt% K2CO3-MgO adsorbent has the largest specificsurface area, and K2CO3 doping of alkali metal carbonate can effectively improve the CO2 adsorption capacity and cyclicstability of the adsorbent.

The Efficiency of China's Banking Industry and the Determinants

Yu Chen,Yufei Wang 한국국제경제학회 2015 International Economic Journal Vol.29 No.4

The recent global financial crisis highlights the importance of a sound financial sector for economic development. This paper evaluates the economic efficiency of China's banking industry and investigates the determinants of this efficiency. Our analysis shows that the average economic efficiency of joint-stock commercial banks is highest, followed by the ‘Big Four’ state-owned commercial banks and city commercial banks. The economic inefficiency of these banks during the past 15 years was mainly caused by technical inefficiency, and this technical inefficiency was mainly caused by scale inefficiency. Using the scores of efficiency as dependent variables, the paper also comprehensively studies the impact of (1) the characteristics of individual banks, (2) the characteristics of the whole banking industry and (3) macroeconomic factors on banking efficiency. The results suggest a number of factors that banks can work on to improve efficiency and lend support to deepening reforms in the Chinese banking industry, including regulatory reforms that require capital adequacy in a more strict way, reforms that introduce more competition and, more broadly, reforms that aim at establishing institutions that can truly commercialize Chinese banks. Last but not least, the efficiency of banking depends on healthy growth of the overall economy.

Parallel Gene Loss and Acquisition Among Strains of Different Brucella Species and Biovars

Zhijun Zhong,Yufei Wang,Jie Xu,Yanfen Chen,Yuehua Ke,Xiaoyan Zhou,Xitong Yuan,Dongsheng Zhou,Yi Yang,Ruifu Yang,Guangneng Peng,Hai Jiang,Jing Yuan,Hongbin Song,Buyun Cui,Liuyu Huang,Zeliang Chen 한국미생물학회 2012 The journal of microbiology Vol.50 No.4

The genus Brucella is divided into six species; of these, B. melitensis and B. abortus are pathogenic to humans, and B. ovis and B. neotomae are nonpathogenic to humans. The definition of gene loss and acquisition is essential for understanding Brucella’s ecology, evolutionary history, and host relationships. A DNA microarray containing unique genes of B. melitensis Type strain 16MT and B. abortus 9-941 was constructed and used to determine the gene contents of the representative strains of Brucella. Phylogenetic relationships were inferred from sequences of housekeeping genes. Gene loss and acquisition of different Brucella species were inferred. A total of 214 genes were found to be differentially distributed,and 173 of them were clustered into 15 genomic islands (GIs). Evidence of horizontal gene transfer was observed for 10GIs. Phylogenetic analysis indicated that the 19 strains formed five clades, and some of the GIs had been lost or acquired independently among the different lineages. The derivation of Brucella lineages is concomitant with the parallel loss or acquisition of GIs, indicating a complex interaction between various Brucella species and hosts.