Controlled synthesis of hierarchical flower-like Sb2WO6 microspheres: Photocatalytic and superhydrophobic property

Chengyu Yang,Xiaojuan Yang,Feng Li,Taohai Li,Wei Cao 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.39 No.-

Functional Sb2WO6 samples were prepared by a solvothermal method. XRD and XPS spectroscopy wereused to demonstrate structures of the as-prepared Sb2WO6 samples. And the morphologies werecharacterized via SEM and TEM. Different morphologies of the Sb2WO6 samples can be convenientlyachieved by simply changing the pH value. The Sb2WO6microspheres were obtained when the pH = 2. Apossible formation process of Sb2WO6 microspheres was proposed. The Sb2WO6 microspheres have highphotocatalytic activity and stability for the degradation of Rhodamine B. Moreover, the wettability ofSb2WO6 microspheres was also investigated. Results suggest that Sb2WO6 surface has highsuperhydrophobicity.

Seismic Response of a Cable-Stayed Bridge considering Non-uniform Excitation Effect: Model Design and Shake Table Testing

Chengyu Yang,Xuesong Cai 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.1

In the absence of intensive tests on the cable-stayed bridges under non-uniform excitation, this study provides a practical and accurate approach to investigate the seismic response of cable-stayed bridges considering spatially varying earthquake inputs. The cable-stayed bridge model with a scale ratio of 1:120 was designed and tested on a newly-developed dual shake table system. Firstly, the modal test was conducted to evaluate the accuracy of the designed specimen. Secondly, both the same input cases and the different inputs cases were executed to study the wave passage effects on bridge specimen's dynamic response. Lastly, the effects of non-uniform excitation and site classification on the experimental bridge's seismic performancewere studied with test results of various soil condition cases. The test results showed that the bending of the girder was magnified, while the swing of the tower was subdued when the effect of wave propagation was considered. Moreover, compared with the same input cases, the different inputs cases reported a larger response to the extent of 80%. Regarding the effects of site conditions, it was concluded that the site of soft soil had more influence on the dynamic responses of such bridge structures than that of the firm soil site.

Central role of autophagic UVRAG in melanogenesis and the suntan response

Yang, Yongfei,Jang, Gyu-beom,Yang, Xuanjun,Wang, Qiaoxiu,He, Shanshan,Li, Shun,Quach, Christine,Zhao, Shihui,Li, Fan,Yuan, Zengqiang,Lee, Hye-Ra,Zhong, Hanbing,Liang, Chengyu National Academy of Sciences 2018 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.115 No.33

<P>UV-induced cell pigmentation represents an important mechanism against skin cancers. Sun-exposed skin secretes alpha-MSH, which induces the lineage-specific transcriptional factor MITF and activates melanogenesis in melanocytes. Here, we show that the autophagic tumor suppressor UVRAG plays an integral role in melanogenesis by interaction with the biogenesis of lysosome-related organelles complex 1 (BLOC-1). This interaction is required for BLOC-1 stability and for BLOC-1-mediated cargo sorting and delivery to melanosomes. Absence of UVRAG dispersed BLOC-1 distribution and activity, resulting in impaired melanogenesis in vitro and defective melanocyte development in zebrafish in vivo. Furthermore, our results establish UVRAG as an important effector for melanocytes' response to alpha-MSH signaling as a direct target of MITF and reveal the molecular basis underlying the association between oncogenic BRAF and compromised UV protection in melanoma.</P>

Real-Time Hybrid Simulation of a Single-Span Girder Bridge Using a Shake Table Coupled with an Actuator

Chengyu Yang,Xuesong Cai,Gaojie Dong,Andreas Schellenberg,Shawn You 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.7

This paper recounts a real-time hybrid simulation (RTHS) that employed a shake table coupled with an actuator to evaluate the seismic performance of a single-span girder bridge. The test specimen for this RTHS was a scaled single-span girder bridge, which was subjected to Loma Prieta excitation in the test. In the RTHS, the bridge specimen, which lacked mass on top of the bridge deck, was physically tested by a shake table and an actuator, whilst the mass on the bridge, as well as the pile foundation and the soil were modeled numerically. OpenSEES was used for numerical modeling and OpenFresco was used for the communication between the test system and numerical model. An adaptive time series (ATS) technique was employed to compensate for time delay in the RTHS. In this way, a novel bridge engineering RTHS application case composed of shake table and actuator control was presented. To validate the results of the RTHS, a shake table test (STT) of the bridge structure with full mass on the bridge deck was conducted correspondingly. Comparing the RTHS and STT results, it can be concluded that acceleration histories, bearing deformation histories, and strain histories of the selected points matched well. The application of RTHS to assess the seismic behavior of the single-span girder bridge was reasonably verified in this paper.

Research on the Design of Diversified Navigation System for the National Central Museum of Korea

王承宇(Chengyu WANG),杨荣明(Rongming YANG) Korea Institute for Humanities and Social Sciences 2024 Journal of Global Arts Studies (JGAS) Vol.2 No.1

【背景】韩国国立中央博物馆新馆自2005 年开放后至今在导览系统的建设中有了较为全面的实践成果。 【目的】对该馆导览系统设计进行梳理和分析,探索其在新馆建立后将近二十年中导览系统设计的发展面貌。 【方法】根据文献研究、实践研究和实地观察等方法对该博物馆所涉及到的导览方式进行搜集、体验和分析。 【结果】总结出该博物馆以多元化的导览体验为发展趋势,依据发展现状将其导览方式分为线上导览、线下导览以及无障碍导览三种方式进行分析。归纳现阶段该馆中导览系统设计的优劣势。 【结论】以用户体验的角度为出发点来寻找与解决实际问题,并对未来发展趋势和路径进行探索及展望。以此来推进韩国国立中央博物馆进一步完善多元化导览体系的建设,进而提供更加完善的导览服务体系。 [Background] The new National Central Museum of Korea has achieved comprehensive practical results in the construction of its navigation system since its opening in 2005. [Purpose] To sort out and analyze the design of the navigation system of the museum, and explore the development trend of the navigation system design in the nearly twenty years after the establishment of the new museum. [Method] Based on literature research, practical research, and on-site observation, collect, experience, and analyze the navigation methods involved in the museum. [Result] It was summarized that the museum's development trend is towards diversified navigation experiences. Based on the current development status, its navigation methods are divided into three types: online navigation, offline navigation, and accessible navigation for analysis. Summarize the advantages and disadvantages of the current design of the navigation system in the museum. [Conclusion] Starting from the perspective of user experience, we aim to find and solve practical problems, and explore and prospect future development trends and paths. To further improve the construction of a diversified navigation system and provide a more comprehensive navigation service system for the National Central Museum of Korea.

Research and Application of Emotional Design-based Visual Image Design for Catering Brands: Taking Hunan Cuisine Brand Furongge as an Example

杨荣明(Rongming YANG),王承宇(Chengyu WANG) Korea Institute for Humanities and Social Sciences 2023 Journal of Global Arts Studies (JGAS) Vol.1 No.1

【背景】后疫情时代的到来,国内经济逐渐复苏和发展,人们的生活消费水平恢复并得到提高。同时,餐饮行业也持续发展复苏且规模不断扩大。对于设计师来说,如何有效地传达整个餐饮品牌形象无疑是一个挑战。【目的】探讨情感化设计在餐饮品牌视觉形象设计中的研究与应用。【方法】从情感化设计的概念和设计理念着手,并分析了情感化设计在餐饮品牌视觉形象设计中的重要性。对芙蓉阁品牌进行了品牌调性分析,明确了品牌的目标客户群体、品牌价值观和品牌个性。旨在为餐饮品牌的情感化设计提供理论支持和实践指导,为“芙蓉阁”品牌的形象设计提供可行性建议和实践经验。【结果】研究了基于情感化设计的餐饮品牌视觉形象设计,分析情感化设计相关理论和品牌形象设计相关理论,并结合餐饮品牌形象设计的案例分析和优劣分析,提出适用于“芙蓉阁”品牌的情感化策略,并以芙蓉阁品牌为例进行了实证研究。【结论】基于情感化设计的餐饮品牌视觉形象设计可以有效地传达品牌的情感价值,还能增强品牌的情感认同度、用户忠诚度,提升市场竞争力和品牌形象。成果对于餐饮企业在品牌视觉形象设计中采用情感化设计具有一定的参考价值,同时也为情感化设计在品牌设计中的应用提供了新的思路和实践路径。 [Background] The arrival of the post-epidemic era, the domestic economy gradually recovered and developed, people's living standards of consumption recovered and improved. At the same time, the restaurant industry also continues to develop and recover and expand. For designers, it is undoubtedly a challenge to effectively communicate the entire restaurant brand image. [Objective] In the history of art, some artists are in a state of being ignored, which is both normal and abnormal. The normal refers to that an art history is a history with both masking and exposure, while the abnormal means that some important artists are excluded from the vision of art history. [Method] Based on literature research methods, we organized articles and literature materials related to Gao Qipei, explored the origin of Gao Qipei's “Wonder-advocating” Thought in his painting from the perspectives of his career and personal experience and analyzed the “Wonder-advocating” Thought from multiple angles. [Result] There was an expression form of “Wonder-advocating” art in the Ming and Qing Dynasties, and Gao Qipei reflected the pursuit of “curiosity” taste from artists in the Qing Dynasty. Starting from Gao Qipei, the finger and pen have a distinction in painting. In his concept, the finger had many advantages over the pen, which prompted him to use the finger for painting and formed his own unique painting style. [Conclusion] It is revealed that Gao Qipei had a “brand new” understanding of painting art under the condition of “Wonderadvocating” Thought, which brought new vitality to Chinese painting art.

Impact of Defects in Steel-Concrete Interface on the Corrosion-Induced Cracking Propagation of the Reinforced Concrete

Wenjun Zhu,Chengyue Yang,Zhongxu Yu,Junhua Xiao,Yude Xu 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.6

This paper presents the corrosion-induced cracking performance of reinforced concrete in a chloride condition. The meso-scale structures of concrete specimens were studied according to the X-ray micro-computed tomography test, including the corrosion propagation, the accumulation and transportation of corrosion products, the defects and cracking behaviors of concrete cover. The experimental results show that the defects could provide a reasonable space for the accommodation of corrosion products, which could significantly increase the corrosion process and postpone the cracking performance. The propagation of the cracking path initiating from the corrosion area of the reinforcement to the concrete cover was also captured based on the experimental images, which can make contribution to the recognition of corrosion-induced cracking behavior of the concrete cover.

Analytical and experimental exploration of sobol sequence based DoE for response estimation through hybrid simulation and polynomial chaos expansion

Rui Zhang,Chengyu Yang,Hetao Hou,Karlel Cornejo,Cheng Chen 국제구조공학회 2023 Smart Structures and Systems, An International Jou Vol.31 No.2

Hybrid simulation (HS) has attracted community attention in recent years as an efficient and effective experimental technique for structural performance evaluation in size-limited laboratories. Traditional hybrid simulations usually take deterministic properties for their numerical substructures therefore could not account for inherent uncertainties within the engineering structures to provide probabilistic performance assessment. Reliable structural performance evaluation, therefore, calls for stochastic hybrid simulation (SHS) to explicitly account for substructure uncertainties. The experimental design of SHS is explored in this study to account for uncertainties within analytical substructures. Both computational simulation and laboratory experiments are conducted to evaluate the pseudo-random Sobol sequence for the experimental design of SHS. Metamodeling through polynomial chaos expansion (PCE) is established from a computational simulation of a nonlinear singledegree-of-freedom (SDOF) structure to evaluate the influence of nonlinear behavior and ground motions uncertainties. A series of hybrid simulations are further conducted in the laboratory to validate the findings from computational analysis. It is shown that the Sobol sequence provides a good starting point for the experimental design of stochastic hybrid simulation. However, nonlinear structural behavior involving stiffness and strength degradation could significantly increase the number of hybrid simulations to acquire accurate statistical estimation for the structural response of interests. Compared with the statistical moments calculated directly from hybrid simulations in the laboratory, the meta-model through PCE gives more accurate estimation, therefore, providing a more effective way for uncertainty quantification.

Functional assessment of CTCF sites at cytokine-sensing mammary enhancers using CRISPR/Cas9 gene editing in mice

Lee, Hye Kyung,Willi, Michaela,Wang, Chaochen,Yang, Chul Min,Smith, Harold E.,Liu, Chengyu,Hennighausen, Lothar Oxford University Press 2017 Nucleic acids research Vol.45 No.8

<P><B>Abstract</B></P><P>The zinc finger protein CTCF has been invoked in establishing boundaries between genes, thereby controlling spatial and temporal enhancer activities. However, there is limited genetic evidence to support the concept that these boundaries restrict the search space of enhancers. We have addressed this question in the casein locus containing five mammary and two non-mammary genes under the control of at least seven putative enhancers. We have identified two CTCF binding sites flanking the locus and two associated with a super-enhancer. Individual deletion of these sites from the mouse genome did not alter expression of any of the genes. However, deletion of the border CTCF site separating the <I>Csn1s1</I> mammary enhancer from neighboring genes resulted in the activation of <I>Sult1d1</I> at a distance of more than 95 kb but not the more proximal and silent <I>Sult1e1</I> gene. Loss of this CTCF site led to <I>de novo</I> interactions between the <I>Sult1d1</I> promoter and several enhancers in the casein locus. Our study demonstrates that only one out of the four CTCF sites in the casein locus had a measurable <I>in vivo</I> activity. Studies on additional loci are needed to determine the biological role of CTCF sites associated with enhancers.</P>

Propagation characteristics of longitudinal wave, shear wave and bending wave in porous circular nanoplates

Wubin Shan,Zulu Deng,Hao Zhong,Hu Mo,Ziqiang Han,Zhi Yang,Chengyu Xiang,Shuzhou Li,Peng Liu 국제구조공학회 2020 Structural Engineering and Mechanics, An Int'l Jou Vol.76 No.4

On the basis of nonlocal strain gradient theory, considering the material properties of porous FGM changing with thickness and the influence of moment of inertia, the wave equation of FG nano circular plate is derived by using the first-order shear deformation plate theory, by introducing dimensionless parameters, we transform the equations into dimensionless wave equations, and the dispersion relations of bending wave, shear wave and longitudinal wave are obtained by Laplace and Hankel integral transformation method. The influence of nonlocal parameter, porosity volume fraction, strain gradient parameters and power law index on the propagation characteristics of bending wave, shear wave and longitudinal wave in FG nano circular plate.