In Situ Growth of FeCo-selenide on Ni Foam as High-Performance Electrode for Electrochemical Energy Storage Devices

An Ye,Jiqiu Qi,Yanwei Sui,Fei Yang,Fuxiang Wei,Yezeng He,Qingkun Meng,Zhi Sun 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.7

A solid-state energy storage device has been fabricated using FeCo-selenide nanosheet arrays as positive electrode and Fe2O3 nanorod as negative electrode. As an electrode material, the ternary FeCo-selenide nanosheet arrays supported by Ni foam show a highest specific capacitance of 978 F/g (specific capacity of 163 mAh/g) at 1 A/g and a superior cycle behavior of 81.2% are obtained after 5000 cycles at current density of 4 A/g. The asymmetric supercapacitor achieves the maximum energy density of 34.6Wh/kg at the power density of 759.6 W/kg. Furthermore, the superior cycling stability with 83% retention of initial capacitance after 5000 cycles further verify the practical applications of FeCo-selenide//Fe2O3 asymmetric supercapacitor. Meanwhile, the LED bulb and the light board of "CUMT" are lighted by connecting several capacitors to form a series circuit.

Overexpression of Capsular Polysaccharide Biosynthesis Protein in Lactobacillus plantarum P1 to Enhance Capsular Polysaccharide Production for Di-n-butyl Phthalate Adsorption

( Wei-bing Liu ),( Zhi-wei Lin ),( Ying Zhou ),( Bang-ce Ye ) 한국미생물 · 생명공학회 2021 Journal of microbiology and biotechnology Vol.31 No.11

Exopolysaccharides (EPSs) such as capsular polysaccharide (CPS) are important bioactive carbohydrate compounds and are often used as bioenrichment agents and bioabsorbers to remove environmental pollutants like di-n-butyl phthalate (DBP). Among the EPS-producing bacteria, lactic acid bacteria (LAB) have gained the most attention. As generally recognized as safe (GRAS) microorganisms, LAB can produce EPSs having many different structures and no health risks. However, EPS production by LAB does not meet the needs of large-scale application on an industrial scale. Here, the capA gene (encoding CPS biosynthesis protein) was overexpressed in Lactobacillus plantarum P1 to improve the production of EPSs and further enhance the DBP adsorption capability. Compared with P1, the CPS production in capA overexpressed strain was increased by 11.3 mg/l, and the EPS thickness was increased from 0.0786 ± 0.0224 μm in P1 to 0.1160 ± 0.0480 μm in P1-capA. These increases caused the DBP adsorption ratio of P1-capA to be doubled. Overall, the findings in this study provide a safe method for the adsorption and removal of DBP.

A Device Designed for Simulating HM Behavior of Compacted GMZ01 Bentonite

Wei-min Ye,J.-Y. Zhu,B. Chen,Y.-J. Cui,J. Wang 대한토목학회 2012 KSCE JOURNAL OF CIVIL ENGINEERING Vol.16 No.7

During the long-term operation of a conceptual multi-barrier deep geological repository for disposal of high-level nuclear waste,performance of the artificial barrier system (compacted bentonite) with consideration of influences of the surrounding rocks has to be evaluated for tens of thousands of years. Numerical simulation technology could be one of the most effective assessment methods. In order to have confidence in the prediction of the coupled hydraulic and mechanical processes occurring within the engineered clay barrier, a comparison between calculated and observed results is essential for validation and verification. For this purpose, a new Hydro-Mechanical (HM) device was designed in this paper, in which compacted GMZ01 bentonite specimen was embedded into a hollow Beishan granite column, which was tightly fixed by a closure metal framework. Relative humidity and pressure sensors were employed for monitoring behavior of the compacted bentonite during hydration, in order to observe the HM coupling performance of the compacted bentonite with consideration of influences of surrounding rocks at room temperature. The newly-developed test device includes three parts, a bottom plug, a cylindrical metal cell body and a top plug, which were tightly fixed together with four screws to form a confined (constant volume) closure system. Relative humidity and pressure sensors were implemented. Relative humidity sensors were calibrated before installation. With this newly-developed device, the GMZ01 bentonite-Beishan granite specimen was submitted to hydration. Some interesting preliminary results of the HM behavior of the compacted GMZ01 bentonite with consideration of the bentonite/rock interactions were obtained and discussed.

Appropriate nitrogen application enhances saponin synthesis and growth mediated by optimizing root nutrient uptake ability

Wei, Wei,Ye, Chen,Huang, Hui-Chuan,Yang, Min,Mei, Xin-Yue,Du, Fei,He, Xia-Hong,Zhu, Shu-Sheng,Liu, Yi-Xiang The Korean Society of Ginseng 2020 Journal of Ginseng Research Vol.44 No.4

Background: Cultivation of medicinal crops, which synthesize hundreds of substances for curative functions, was focused on the synthesis of secondary metabolites rather than biomass accumulation. Nutrition is an important restrict factor for plant growth and secondary metabolites, but little attention has been given to the plasticity of nutrient uptake and secondary metabolites synthesis response to soil nitrogen (N) change. Methods: Two year-field experiments of Sanqi (Panax notoginseng), which can synthesize a high level of saponin in cells, were conducted to study the effects of N application on the temporal dynamics of biomass, nutrient absorption, root architecture and the relationships between these parameters and saponin synthesis. Results: Increasing N fertilizer rates could improve the dry matter yields and nutrient absorption ability through increasing the maximum daily growth (or nutrient uptake) rate. Under suitable N level (225 kg/ha N), Sanqi restricted the root length and surface and enhanced the root diameter and N uptake rate per root length (NURI) to promote nutrient absorption, but the opposite status of Sanqi root architecture and NURI was found when soil N was deficient. Furthermore, increasing N rates could promote the accumulation of saponin in roots through improving the NURI, which showed a significant positive relationship with the content of saponin in the taproots. Conclusion: Appropriate N fertilizer rates could optimize both root architecture and nutrient uptake efficiency, then promote both the accumulation of dry matter and the synthesis of saponins.

Adaptive Differentiated Integrated Routing Scheme for GMPLS-based Optical Internet

Wei, Wei,Zeng, Qingji,Ye, Tong,Lomone, David The Korea Institute of Information and Commucation 2004 Journal of communications and networks Vol.6 No.3

A new online multi-layer integrated routing (MLIR) scheme that combines IP (electrical) layer routing with WDM (optical) layer routing is investigated. It is a highly efficient and cost-effective routing scheme viable for the next generation integrated optical Internet. A new simplified weighted graph model for the integrated optical Internet consisted of optical routers with multi-granularity optical-electrical hybrid switching capability is firstly proposed. Then, based on the proposed graph model, we develop an online integrated routing scheme called differentiated weighted fair algorithm (DWFA) employing adaptive admission control (routing) strategies with the motivation of service/bandwidth differentiation, which can jointly solve multi-layer routing problem by simply applying the minimal weighted path computation algorithm. The major objective of DWFA is fourfold: 1) Quality of service (QoS) routing for traffic requests with various priorities; 2) blocking fairness for traffic requests with various bandwidth granularities; 3) adaptive routing according to the policy parameters from service provider; 4) lower computational complexity. Simulation results show that DWFA performs better than traditional overlay routing schemes such as optical-first-routing (OFR) and electrical-first-routing (EFR), in terms of traffic blocking ratio, traffic blocking fairness, average traffic logical hop counts, and global network resource utilization. It has been proved that the DWFA is a simple, comprehensive, and practical scheme of integrated routing in optical Internet for service providers.

Adenosine A3 Receptor Mediates ERK1/2- and JNK-Dependent TNF-α Production in Toxoplasma gondii-Infected HTR8/SVneo Human Extravillous Trophoblast Cells

Wei Ye,Jinhui Sun,Chunchao Li,Xuan-Yan Fan,Fan Gong,Xinqia Huang,Mingzhu Deng,Jia-Qi Chu 대한기생충학ㆍ열대의학회 2020 The Korean Journal of Parasitology Vol.58 No.4

Toxoplasma gondii is an intracellular parasite that causes severe disease when the infection occurs during pregnancy. Adenosine is a purine nucleoside involved in numerous physiological processes; however, the role of adenosine receptors in T. gondii-induced trophoblast cell function has not been investigated until now. The goal of the present study was to evaluate the intracellular signaling pathways regulated by adenosine receptors using a HTR-8/SVneo trophoblast cell model of T. gondii infection. HTR8/SVneo human extravillous trophoblast cells were infected with or without T. gondii and then evaluated for cell morphology, intracellular proliferation of the parasite, adenosine receptor expression, TNF-α production and mitogen-activated protein (MAP) kinase signaling pathways triggered by adenosine A3 receptor (A3AR). HTR8/SVneo cells infected with T. gondii exhibited an altered cytoskeletal changes, an increased infection rate and reduced viability in an infection time-dependent manner. T. gondii significantly promoted increased TNF-α production, A3AR protein levels and p38, ERK1/2 and JNK phosphorylation compared to those observed in uninfected control cells. Moreover, the inhibition of A3AR by A3AR siRNA transfection apparently suppressed the T. gondii infection-mediated upregulation of TNF-α, A3AR production and MAPK activation. In addition, T. gondii-promoted TNF-α secretion was dramatically attenuated by pretreatment with PD098059 or SP600125. These results indicate that A3AR-mediated activation of ERK1/2 and JNK positively regulates TNF-α secretion in T. gondii-infected HTR8/SVneo cells.

Prostate cancer and prostatic diseases Best of China, 2018

Ye, Ding-Wei,Zhu, Yao Nature Publishing Group 2019 Prostate cancer and prostatic diseases Vol.22 No.1

Experimental Study on Sustained-release 5-Fluorouracil Implantation in Canine Peritoneum and Para-aortic Abdominalis

Wei, Guo,Nie, Ming-Ming,Shen, Xiao-Jun,Xue, Xu-Chao,Ma, Li-Ye,Du, Cheng-Hui,Wang, Shi-Liang,Bi, Jian-Wei Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.1

Objective: To observe local and systemic toxicity after sustained-release 5-fluorouracil (5-Fu) implantation in canine peritoneum and para-aortic abdominalis and the changes of drug concentration in the local implanted tissue with time. Methods: 300 mg sustained-release 5-Fu was implanted into canine peritoneum and para-aorta abdominalis. Samples were taken 3, 5, 7 and 10 days after implantation for assessment of changes and systemic reactions. High performance liquid chromatography was applied to detect the drug concentrations of peritoneal tissue at different distances from the implanted site, lymphatic tissue of para-aortic abdominalis, peripheral blood and portal venous blood. Results: 10 days after implantation, the drug concentrations in the peritoneum, lymphatic tissue and portal vein remained relatively high within 5 cm of the implanted site. There appeared inflammatory reaction in the local implanted tissue, but no visible pathological changes such as cell degeneration and necrosis, and systemic reaction like anorexia, nausea, vomiting and fever. Conclusions: Sustained-release 5-Fu implantation in canine peritoneum and para-aortic abdominalis can maintain a relatively high tumour-inhibiting concentration for a longer time in the local implanted area and portal vein, and has mild local and systemic reactions. Besides, it is safe and effective to prevent or treat recurrence of gastrointestinal tumours and liver metastasis.

요하네스 이텐의 색채표현론 관점에서 바라본 환경조형물 색채비교 - 한국 광주광역시와 중국 쑤저우시(蘇州)를 중심으로 -

예웨이 ( Ye Wei ),남호정 ( Nam Ho Jung ) 한국상품문화디자인학회 2021 상품문화디자인학연구 Vol.67 No.-

도시 환경조형물은 한 지역의 예술 문화를 투영할 뿐만 아니라 그 지역의 경제발전과도 밀접한 관계가 있다. 도시의 발달에 따른 환경조형물의 역할이 중요해짐에 따라 그 환경조형물의 정확한 의미 파악도 필요하다. 따라서 본 연구는 바우하우스의 색채가 요하네스 이텐의 색채 표현 이론을 통해 한국의 광주광역시와 중국의 쑤저우시(蘇州) 주요 도로에 위치한 환경조형물의 색채를 비교함으로써 어떠한 의미가 있는지와 문화적 차이를 파악하고자 하였다. 연구결과, 첫째, 도시의 대표색을 반드시 대표 조형물에 사용하는 것은 아니다. 둘째, 도시 환경조형물의 특징은 문화적 정서에 따라 색채 표현의 제한이 있다. 셋째, 색채대비를 통하여 도시 조형물의 특성과 의미를 부각시킨다. 위 근거를 토대로 도시 환경조형물로서의 색채 의미 파악은 유의미한 것으로 도출되었다. 특히 색채 표현론 중에서 대비에 의한 색채 조화와 배색 관계에 대한 분석으로 도시 환경조형물로서의 의미 파악은 유의미할 것이다. 본 연구의 조형물에 나타난 색채 의미 파악을 바탕으로 추후 도시민들의 조형물에 대한 감응도에 대한 후속 연구가 나온다면 두 도시의 정체성 파악과 시대가 필요로 하는 조형물에 대한 제안도 가능할 것이다. Urban environment sculptures not only project the artistic culture of a region, but are also closely related to the economic development of the region. As the role of environmental sculptures becomes more important with the development of cities, it is also necessary to understand the precise meaning of the environmental sculptures. Therefore, this study aims to understand the meaning and cultural differences of Bauhaus colors by comparing the colors of environmental sculptures located on major roads in Gwangju Metropolitan City in Korea and Suzhou City in China through Johannes Itten's color expression theory. As a result of the study, first, the representative color of the city is not necessarily used for the representative sculpture. Second, the characteristics of urban environment sculptures are limited in color expression according to cultural sentiments. Third, the characteristics and meaning of urban sculptures are emphasized through color contrast. Based on the above evidence, the meaning of color as an urban environment sculpture was derived to be significant. Especially it will be meaningful to understand the meaning as an urban environment sculpture by analyzing the color harmony and color arrangement relationship by contrast in the theory of color expression. Based on the understanding of the meaning of colors in the sculptures in this study, if a follow-up study on the level of inspiration for the sculptures of city dwellers emerges, it will be possible to identify the identities of the two cities and suggest the sculptures required by the times.

K-L Transform and Learning Vector Quantization

Shi Wei Ye,Zhong Zhi Shi 대한전자공학회 1994 ICONIP : International Conference On Neural Inform Vol.1 No.3