The Formation and Analysis of the Concept of "New Dimension Art"

Chen Yucheng 국제문화기술진흥원 2023 International Journal of Advanced Culture Technolo Vol.11 No.3

"New Dimension Art" is an artistic concept of the new era that the author puts forward by combining the background, the artistic environment and the artistic market.It relates to the consciousness of thought, the way of feeling, the form of expression and even the style of language in artistic creation.The author expounds this concept of art.At the same time, this paper deeply studies the characteristics of "new dimension art" by analyzing personality and commonality, as well as the creator's personality transformation.The author hopes that he and more artists can create and express more accurately through this concept, so that his works can fully reflect the author's individual characteristics and release more dimensional field energy. We are confident that this paper will affect the area of painting in the future.

Numerical simulation of wave slamming on 3D offshore platform deck using a coupled Level-Set and Volume-of-Fluid method for overset grid system

Zhao, Yucheng,Chen, Hamn-Ching,Yu, Xiaochuan Techno-Press 2015 Ocean systems engineering Vol.5 No.4

The numerical simulation of wave slamming on a 3D platform deck was investigated using a coupled Level-Set and Volume-of-Fluid (CLSVOF) method for overset grid system incorporated into the Finite-Analytic Navier-Stokes (FANS) method. The predicted slamming impact forces were compared with the corresponding experimental data. The comparisons showed that the CLSVOF method is capable of accurately predicting the slamming impact and capturing the violent free surface flow including wave slamming, wave inundation and wave recession. Moreover, the capability of the present CLSVOF method for overset grid system is a prominent feature to handle the prediction of wave slamming on offshore structure.

Effect of surface quality on hydrogen/helium irradiation behavior in tungsten

Hongyu Chen,Qiu Xu,Jiahuan Wang,Peng Li,Julong Yuan,Binghai Lyu,Jinhu Wang,Kazutoshi Tokunaga,Gang Yao,Laima Luo,Yucheng Wu 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.6

As the plasma facing material in the nuclear fusion reactor, tungsten has to bear the irradiation impact ofhigh energy particles. The surface quality of tungsten may affect its irradiation resistance, and even affectthe service life of fusion reactor. In this paper, tungsten samples with different surface quality werepolished by mechanical processing, subsequently conducted by D2þ implantation and thermal desorption. D2þ implantation was performed at room temperature (RT) with the irradiation dose of 1 1021D2þ/m2 by 5 keV D2þ ions, and thermal desorption spectroscopy measurements were done from RT to900 K. In addition, He irradiation was also performed by 50 eV Heþ ions energy with the fluxes of5.5 1021 m2s1 and 1.5 1022 m2s1, respectively. Results reveal that the hydrogen/helium irradiation behavior are both related to surface quality. Samples with high surface quality has superior D2þretention behavior with less D2 retained after implantation. However, such samples are more likely togenerate fuzzes on the surface after helium irradiation. Different morphologies (smooth, wavy, pyramids)after helium irradiati

Reliability Evaluation and Optimization Method in Power Communication Network Based on Environmental Factors and Controlled Hybrid Stochastic Petri Net

Huilin Liu,YuCheng Ma,Xushan Chen,Meng Zhou,Shiyou Chen 한국통신학회 2020 한국통신학회 APNOMS Vol.2020 No.09

The reliability of the power communication network is important to the stable operation of the power grid. Existing studies on the reliability evaluation of power communication networks rarely consider the factors of environmental changes. In fact, changes in the working environment of power service routing will affect the normal operation of the network. This paper studies the reliability evaluation method of power communication network based on environmental factors. The normal cloud model method is used to model the multiple environmental factors in the power communication network, and a controlled hybrid stochastic petri network is used to model and analyze the power transmission system with backup route. In simulation experiments, we compare our algorithm with the contrast algorithm that not considering the impact of environmental factors. The results show that our algorithm can well reflect the impact of changes in environmental factors on the reliability of the system, and more in line with the actual reliability changes of the power service transmission system.

Numerical analysis on the performance of an SCR monolith reactor

Pengfei Feng,Ding Chen,Yucheng Cao,Yaotong Chen 한국화학공학회 2020 Korean Journal of Chemical Engineering Vol.37 No.4

An SCR catalyst is used as an example to investigate the effects of the washcoat diffusion limitation on the performance of monolith reactors. One-dimensional model and three-dimensional CFD model with and without washcoat diffusion limitation were established. The washcoat diffusion was modeled by using an effective diffusivity in the washcoat region (CFD modeling) and the internal mass transfer coefficient between the interface and the interior of the washcoat (One-dimensional modeling). The results show that numerical models with washcoat diffusion limitation give more accurate NO concentration prediction than the numerical models without washcoat diffusion limitation. Using the ratios of internal mass transfer resistance and reaction resistance to estimate the washcoat diffusion limitation, the correlation between the temperature and the washcoat limitation is discussed. Detailed comparisons of the 1-D model and CFD model are conducted.

A simple model for describing the effect of temperature on insect developmental rate

Peijian Shi,Feng Ge,Yucheng Sun,Chunli Chen 한국응용곤충학회 2011 Journal of Asia-Pacific Entomology Vol.14 No.1

The linear and Logan models are usually used to describe the effect of temperature on insect developmental rate. The linear model is often used to estimate the lower developmental threshold. However, it cannot be used to calculate the upper developmental threshold. Additionally, it fails to describe developmental rates near, at, and above the optimal developmental temperature. The Logan model can reflect temperaturedependent developmental rates from the lower to upper developmental thresholds. It is often used to compute the optimal developmental temperature and the upper developmental threshold, but it is not used to compute the lower developmental threshold. To avoid the disadvantages of these two models, we develop a new model, the ‘performance model’ on the basis of the impact of increasing temperature on enzyme activity and denaturation. The performance model was first used by Huey and Stevenson (Amer. Zool. 19,357–366) to provide a statistical description of the impact of body temperature on performance, but they did not provide underlying physiological mechanisms. Few studies have used the performance model to analyze the temperature-dependent developmental rates of insects, perhaps because of the lack of a theoretical justification. Here, we provide a theoretical justification to use the model and we use the performance model to evaluate the developmental rate data of two insect species. We found that the performance model has advantages over the linear and Logan models, and that the lower and upper developmental thresholds can be simultaneously obtained from this model.

Study on Electro-Spark Deposition Welding of Ultra-thin Sheet of Ti-6.5Al-1Mo-1 V-2Zr Alloy

Fei Liu,Tao Chen,Lihui Pang,Kuijing Song,Yucheng Wu 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.23 No.10

In this work, butt welding experiment of Ti-6.5Al-1Mo-1 V-2Zr alloy sheet of 0.5 mm thickness was performed via electro-spark deposition method. The results of the experiment indicate that the reactive titanium alloy’s surface is free from oxidation without trailing shielding protection due to low heat input and rapid thermal cycles associated with the process. The fusion zone is mainly composed of equiaxed microstructure of martensite α′ and α dual phases, wherein the amount of α′ in the central joint is higher than that adjacent to the base metal. The maximum tensile strength of the welded joint can reach 1187 MPa, which is 95% of the base metal. Besides, the joint shows obvious plastic deformation before fracture. The findings have demonstrated the possibility of widely applying the welding methodology to thin sheets of titanium alloys.

Genome-wide identification of WRKY family genes and their response to abiotic stresses in tea plant (Camellia sinensis)

Pengjie Wang,Chuan Yue,Di Chen,Yucheng Zheng,Qian Zhang,Jiangfan Yang,Naixing Ye 한국유전학회 2019 Genes & Genomics Vol.41 No.1

The WRKY transcription factors (TFs) family is one of the largest TF families in plants and plays a central role in diverse regulation and multiple stress responses. However, the systematical analysis of the WRKY gene family in tea plant (Camellia sinensis) based on genomic data has been lacking. The primary objective of this study was to set a systematic analysis of the WRKY gene family based on genomic data in tea plant and analyze their expression profiles under various abiotic stresses. We searched the tea plant genome using the consensus model of the WRKY domain (PF03106) and then used these search results to identify all the WRKY family members by SMART and the CDD program. Analyze their phylogeny, classification, structure, conserved motifs, Cis-elements, interactors and expression profiles. 56 putative WRKY genes were identified from the tea plant genome and divided into three main groups (I–III) and five subgroups (IIa–IIe) according to the WRKY domains and the zinc-finger structure. The gene structure and conserved motifs of the CsWRKY genes were also characterized and were consistent with the classification results. Annotation analysis showed that 34 CsWRKY genes may be involved in stress responses. Promoter analysis implied that CsWRKY genes, except for CsWRKY55, possessed at least one abiotic stress response cis-element. Expression profiles of CsWRKY genes in different tissues were analyzed with RNA-seq data. The results showed that 56 CsWRKY genes had differential expression in their transcript abundance. The expression profiles also showed that many identified CsWRKY genes were possibly involved in the response to cold, drought, salt, or ABA treatment. Tea plant genome contains at least 56 WRKY genes. These results provide useful information for further exploring the function and regulatory mechanism of CsWRKY genes in the growth, development, and adaption to abiotic stresses in tea plant.

Sick sinus syndrome associated with Erdheim- Chester disease was reversed by interferon-alpha treatment

( Xinli Guo ),( Yuanwei Xu ),( Ke Wan ),( Yucheng Chen ) 대한내과학회 2022 The Korean Journal of Internal Medicine Vol.37 No.1

Biodegradable charged polyester-based vectors (BCPVs) as an efficient non-viral transfection nanoagent for gene knockdown of the BCR-ABL hybrid oncogene in a human chronic myeloid leukemia cell line

Yang, Chengbin,Panwar, Nishtha,Wang, Yucheng,Zhang, Butian,Liu, Maixian,Toh, Huiting,Yoon, Ho Sup,Tjin, Swee Chuan,Chong, Peter Han Joo,Law, Wing-Cheung,Chen, Chih-Kuang,Yong, Ken-Tye The Royal Society of Chemistry 2016 Nanoscale Vol.8 No.17

<P>First-line therapy of chronic myelogenous leukemia (CML) has always involved the use of BCR-ABL tyrosine-kinase inhibitors which is associated with an abnormal chromosome called Philadelphia chromosome. Although the overall survival rate has been improved by the current therapeutic regime, the presence of resistance has resulted in limited efficacy. In this study, an RNA interference (RNAi)-based therapeutic regime is proposed with the aim to knockdown the BCR-ABL hybrid oncogene using small interfering RNA (siRNA). The siRNA transfection rates have usually been limited due to the declining contact probability among polyplexes and the non-adherent nature of leukemic cells. Our work aims at addressing this limitation by using a biodegradable charged polyester-based vector (BCPV) as a nano-carrier for the delivery of BCR-ABL-specific siRNA to the suspension culture of a K562 CML cell line. BCR-ABL siRNAs were encapsulated in the BCPVs by electrostatic force. Cell internalization was facilitated by the BCPV and assessed by confocal microscopy and flow cytometry. The regulation of the BCR-ABL level in K562 cells as a result of RNAi was analyzed by real-time polymerase chain reaction (RT-PCR). We observed that BCPV was able to form stable nanoplexes with siRNA molecules, even in the presence of fetal bovine serum (FBS), and successfully assisted in vitro siRNA transfection in the non-adherent K562 cells. As a consequence of downregulation of BCR-ABL, BCPV-siRNA nanoplexes inhibited cell proliferation and promoted cell apoptosis. All results were compared with a commercial transfection reagent, Lipofectamine2000 (TM), which served as a positive control. More importantly, this class of non-viral vector exhibits biodegradable features and negligible cytotoxicity, thus providing a versatile platform to deliver siRNA to non-adherent leukemia cells with high transfection efficiency by effectively overcoming extra-and intra-cellular barriers. Due to the excellent in vitro transfection results from BCPV-siRNA, a newly developed biodegradable transfection agent, BCPV, is being probed for transfection performance in an animal model.</P>