http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
유춘리,( Yuefa Jia ),( Shiping Li ),( Daryll J Dalayoan ) 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.1
NO have been a primary cause of air pollution, and it is important to find efficient and economical ways to remove NO from the atmosphere. (BiO)<sub>2</sub>CO<sub>3</sub> (BOC) and BiO<sub>2</sub>-x are both emerging Bi-based semiconductor photocatalysts. In this report, Z-scheme (BiO)<sub>2</sub>CO<sub>3</sub>-BiO<sub>2</sub>-xgraphene (BOC-BiO<sub>2</sub>-x-GR) composite photocatalyst was designed for NO removal under simulated solar light irradiation. Through the optimization of the BiO<sub>2</sub>-x content, we observed that the BOC-BiO<sub>2</sub>-x (35wt%)-GR composite exhibited superior photocatalytic activities in NO removal. Detailed microstructural observation showed that the BOC-BiO<sub>2</sub>-x heterojunction was formed between BOC (013) and BiO<sub>2</sub>-x (111) planes. Theoretical calculations confirmed that the BOC and BiO<sub>2</sub>-x heterojunction favors the transfer of photo-generated electrons, which can be further enhanced by highly conductive GR sheets. O<sub>2</sub>ㆍ- and HOㆍ were observed through the ESR measurements as the main active species.
모바일 면세점 앱에서 AR 쇼핑 사용성 향상에 관한 연구: 롯데 면세점 앱을 중심으로
유춘리,남인용,딩메이쥔,왕수홍,설원원 국제문화기술진흥원 2024 The Journal of the Convergence on Culture Technolo Vol.10 No.1
Due to COVID-19, domestic Duty-free shops have been severely impacted, and with the expansion of the untact market, the proportion of mobile shopping has increased. So far, mobile duty-free shop AR shopping is not active, and related research is scarce. Therefore, we aims to enhance Duty-free Shopping APPs with AR technology by researching the needs of foreign users. First, in the mobile duty-free shop app, the AR shopping interface must be in a prominent position to be open and easy to use. Second, there should be an explanation or help for location and function so that all users can easily recognize the AR shopping interface. Third, when wearing duty-free items in the AR shopping interface or adding them to the storage and shopping cart of interest, the interface must be simple and flexible, making it convenient to use and operate. Fourth, technical improvements must be made to prevent errors. We expect that the research will help develop AR shopping technology and domestic duty-free shop AR shopping technology and revitalize online and offline duty-free shops.
유춘리,( Li Shiping ) 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-
In this study, layered V<sub>2</sub>O<sub>5</sub>@layered-ZnV<sub>2</sub>O<sub>6</sub> nanostructures were synthesized using a hydrothermal method followed with heat treatment. The heat treatment temperature has been varied to optimize the composition and CO<sub>2</sub> reduction efficient. Characterization results demonstrate that an optimized CO generation rate of 6.15 μmolg<sup>-1</sup>h<sup>-1</sup> with an approximate stoichiometric O<sub>2</sub> evolution can be achieved from V<sub>2</sub>O<sub>5</sub>@ ZnV<sub>2</sub>O<sub>6</sub> under simulated solar light irradiation, as well as relatively good selectivity and stability. The performance of optimized V<sub>2</sub>O<sub>5</sub>@ZnV<sub>2</sub>O<sub>6</sub> for CO production was 3.53 folds higher than using pure ZnV<sub>2</sub>O<sub>6</sub> sample. This reveals that ZnV2O6 nanosheets not only allow the transfer of electrons towards CO<sub>2</sub> but also provide short pathways for electron transfer, which leads to the enhanced photoactivity. In addition, V<sub>2</sub>O<sub>5</sub> presents in the sample further contribute to enhance performance of ZnV<sub>2</sub>O<sub>6</sub> hierarchical nanosheets due to enabling efficient charge carrier separation.
Thermoelectric properties of polycrystalline tetragonal SrCu2O2
Octolia Togibasa Tambunan,김재영,김일호,정창욱,유춘리,이보화 한양대학교 세라믹연구소 2011 Journal of Ceramic Processing Research Vol.12 No.6
In this study, we report the successful fabrication of polycrystalline tetragonal SrCu2O2 by a solid state reaction and the dependence of its thermoelectric properties on the sintering temperature. Two sintering temperatures, 1093 K and 1143 K,were used in the solid state reaction process. A p-type semiconducting behavior was observed for both samples. In the temperature range of 423 to 923 K, the SrCu2O2 sintered at 1093 K shows a relatively higher conductivity, power factor, and figure of merit as compared to the SrCu2O2 sintered at 1143 K. At 923 K, the Seebeck coefficient and the power factor for the SrCu2O2 sintered at 1093 K are 298 mV/K and 2 × 10−6 W/mK2, respectively. These values are comparable to the thermoelectric performance of polycrystalline p-type CuAlO2, suggesting that polycrystalline SrCu2O2 prepared with optimized conditions could be used for thermoelectric applications.