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Bo Lai,Qingqing Ji,Yue Yuan,Donghai Yuan,Yuexi Zhou,Juling Wang 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.1
To investigate the degradation of high concentration pollutant by Fe/Cu bimetallic system at a high operating temperature, 10,000mg/L acid orange 7 (AO7) aqueous solution was treated by Fe/Cu bimetallic system at 80 oC. First, the effect of the operating temperature (30-80 oC) on the reactivity of Fe/Cu bimetallic particles was investigated thoroughly. Then, the studies on the effect of theoretical Cu mass loading, Fe/Cu dosage, stirring speed and initial pH on the reactivity of Fe/Cu bimetallic particles at a high temperature (i.e., 80 oC) were carried out, respectively. The degradation and transformation process of AO7 was studied by using COD, TOC and UV-Vis spectra. The results indicate that high concentration pollutant could be removed effectively by Fe/Cu bimetallic system at a high operating temperature. And the removal efficiencies of AO7 by Fe/Cu bimetallic system were in accordance with the pseudofirst- order model. Finally, it was observed that the high temperature could accelerate mass transport rate and overcome the high activation energy barrier to significantly improve the reactivity of Fe/Cu bimetallic particles. Therefore, the higher removal efficiency could be obtained by Fe/Cu system at a high operating temperature. Thus, the high operating temperature played a leading role in the degradation of high concentration pollutant.
Lai Bo-Lun,Chang Szu-Li,Sheu Rong-Jiun 대한방사선방어학회 2022 방사선방어학회지 Vol.47 No.1
Background: There are several proton therapy facilities in operation or planned in Taiwan, and these facilities are anticipated to not only treat cancer but also provide beam services to the industry or academia. The simplified approach based on the Monte Carlo-based data sets (source terms and attenuation lengths) with the point-source line-of-sight approximation is friendly in the design stage of the proton therapy facilities because it is intuitive and easy to use. The purpose of this study is to expand the Monte Carlo-based data sets to allow the simplified approach to cover the application of proton beams more widely.Materials and Methods: In this work, the MCNP6 Monte Carlo code was used in three simulations to achieve the purpose, including the neutron yield calculation, Monte Carlo-based data sets generation, and dose assessment in simple cases to demonstrate the effectiveness of the generated data sets.Results and Discussion: The consistent comparison of the simplified approach and Monte Carlo simulation results show the effectiveness and advantage of applying the data set to a quick shielding design and conservative dose assessment for proton therapy facilities.Conclusion: This study has expanded the existing Monte Carlo-based data set to allow the simplified approach method to be used for dose assessment or shielding design for beam services in proton therapy facilities. It should be noted that the default model of the MCNP6 is no longer the Bertini model but the CEM (cascade-exciton model), therefore, the results of the simplified approach will be more conservative when it was used to do the double confirmation of the final shielding design.
BARRIERS TO IMPLEMENTING SOCIAL MARKETING IN ASIA: A CRITICAL REVIEW
Bo Pang,Sameer Deshpande,Yara Almosa,Amna Arif,Denni Arli,Marat Bakpayev,B. Zafer Erdogan,Haruka Fujihira,Samanthika Gallage,Mohammad Kadir Kadir,Jeawon Kim,Mai Nguyen,Derek Ong Lai Teik,Patama Satawe 글로벌지식마케팅경영학회 2020 Global Marketing Conference Vol.2020 No.11
( Lai Wei ),( Gui-qiang Wang ),( Yan Luo ),( Chi-jen Chu ),( Seung Woon Paik ),( Jinlin Hou ),( Jun Cheng ),( Qing Xie ),( Zhongping Duan ),( Jia-horng Kao ),( Linda Fredrick ),( Bo Fu ),( Niloufar Mo 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: ONYX-II is a phase 3, open-label study of 3-DAA regimen of OBV/PTV/r and DSV with RBV in treatment-naive and experienced patients with genotype 1b HCV infection and compensated cirrhosis in China, South Korea and Taiwan. SVR12 rate was 100% and the favourable safety profile was shown. The present analysis reports efficacy( SVR24) and safety results. Methods: Patients with chronic GT1b HCV infection and compensated cirrhosis received OBV/PTV/r + DSV + RBV for 12 weeks and will be followed for 48 weeks post-treatment. Efficacy was assessed by SVR12 and SVR24. Safety was assessed as the percentage of patients wi th treatment-emergent adverse events (TEAEs) and laboratory evaluation. Results: Total of 104 patients with chronic GT1b HCV infection (62% female, 100% Asian, 58% treatment-experienced) were enrolled from China (n=63), South Korea (n=21) and Taiwan (n=20). All patients received at least one dose of study drugs. The SVR24 rate was 100% (concordant with SVR12), with no patient relapsing between post-treatment week 12 and 24. Most TEAEs were mild in severity. The most common TEAEs (≥10%) were increased blood bilirubin levels (25%), pruritus (15%), anaemia (14%), asthenia (12%), bilirubin conjugated increased (12%), blood bilirubin unconjugated increased (12%), dizziness (11%) and fatigue (11%). Four patients had serious AEs and all were assessed as not being related to the 3-DAA regimen (one was assessed as being possibly related to RBV). One patient discontinued treatment due to TEAEs (elevations in alanine aminotransferase [ALT], aspartate aminotransferase [AST] and blood bilirubin) after 3 weeks of dosing but achieved SVR12 and SVR24. Laboratory abnormalities ≥ grade 3 were infrequent (ALT: 3%; AST 2%; total bilirubin: 7%). No grade 3 haemoglobin decrease was reported. Conclusions: SVR24 and SVR12 rates were concordant (100%) in HCV GT1b-infected Asian patients with compensated cirrhosis. The regimen was generally well tolerated with mostly mild TEAEs reported.
Prediction of Recurrence of Early Gastric Cancer After Curative Resection
Lai, Ji Fu,Kim, Sungsoo,Kim, Kiyeol,Li, Chen,Oh, Sung Jin,Hyung, Woo Jin,Rha, Sun Young,Chung, Hyun Cheol,Choi, Seung Ho,Wang, Lin Bo,Noh, Sung Hoon Springer - Society of Surgical Oncology 2009 Annals of Surgical Oncology Vol.16 No.7
Characterization of GaN thick layer grown by the HVPE: Comparison of horizontal with vertical growth
Lai, Van Thi Ha,Jung, Jin-Huyn,Oh, Dong-Keun,Choi, Bong-Geun,Eun, Jong-Won,Lim, Jee-Hun,Park, Ji-Eun,Lee, Seong-Kuk,Yi, Sung,Shim, Kwang-Bo The Korea Association of Crystal Growth 2008 韓國結晶成長學會誌 Vol.18 No.3
GaN films were grown on the vertical and horizontal reactors by the hydride vapour phase epitaxy (HVPE). The structural and optical characteristics of the GaN films were investigated depending on the reactor-type. GaN epilayers were characterized by double crystal X-ray diffraction (DC-XRD), transmission electron microscopy (TEM) and photoluminescence (PL). Surface defects of two kinds of the GaN films were revealed by the wet chemical etching method, using $H_3PO_4$ acid at $200^{\circ}C$ for 8 minutes. Hexagonal etch pits were analyzed by optical microscopy and SEM. Etch pit densities were calculated to be approximately $1.4{\times}10^7$ and $1.2{\times}10^6\;cm^{-2}$ for GaN layers grown on horizontal and vertical reactors, respectively. Those results show GaN grown in the vertical reactor having a better quality of optical properties and crystallinity than that in the horizontal reactor.
Bo Kook Jang,Lai Won Chi,Ju Sung Cho,Cheol Hee Lee (사)한국식물생명공학회 2020 JOURNAL OF PLANT BIOTECHNOLOGY Vol.47 No.1
This study aimed to screen for plants with antimicrobial potential among the evergreen woody species of South Korea that are used for horticulture and landscaping and to provide basic information about plants with proven antimicrobial activity to underpin future research. The plant materials were extracted under various conditions, and the antimicrobial activities of the extracts were evaluated by agar diffusion assay. The screening tests demonstrated that the crude extracts of 43 species had inhibitory effects against S. aureus. The inhibitory activities of four species (Elaeocarpus sylvestris, Camellia japonica, Cleyera japonica, and Quercus salicina) were relatively higher than that of the synthetic antimicrobial agents methylparaben and phenoxyethanol. The highest inhibitory activity was observed with the leaf extracts (extracted with methanol for 30 minutes) of E. sylvestris, based on induction of the largest inhibition zone of 23.3 mm in size. In addition, solvent fractions of E. sylvestris were evaluated. The largest inhibitory zone of 23.1 mm was observed for the n-butanol fraction, which is likely to contain effective compounds that exhibit inhibitory activity against S. aureus. In contrast, n-hexane and residual aqueous fractions showed no antimicrobial activity. Overall, our findings confirm that evergreen woody plants native to South Korea have potential antimicrobial activity.
Search for D0 decays to invisible final states at Belle
Lai, Y.-T.,Wang, M.-Z.,Adachi, I.,Aihara, H.,Al Said, S.,Asner, D. M.,Aushev, T.,Ayad, R.,Badhrees, I.,Bakich, A. M.,Bansal, V.,Barberio, E.,Berger, M.,Bhardwaj, V.,Bhuyan, B.,Biswal, J.,Bobrov, A.,Bo American Physical Society 2017 Physical Review D Vol.95 No.1
<P>We report the result from the first search for D-0 decays to invisible final states. The analysis is performed on a data sample of 924 fb(-1) collected at and near the gamma(4S) and gamma(5S) resonances with the Belle detector at the KEKB asymmetric-energy e(|) e(-) collider. The absolute branching fraction is determined using an inclusive D-0 sample, obtained by fully reconstructing the rest of the particle system including the other charmed particle. No significant signal yield is observed and an upper limit of 9.4 x 10(-5) is set on the branching fraction of D-0 to invisible final states at 90% confidence level.</P>