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Wang, Wan Lin,Oh, Byeong-Yun,Park, Ju-Young,Ki, Hangil,Jang, Jaewon,Lee, Gab-Yong,Gu, Hal-Bon,Ham, Moon-Ho Elsevier 2015 Journal of Power Sources Vol.300 No.-
<P><B>Abstract</B></P> <P>Owing to their multiple redox couples, titanium–niobium-based oxides are still considered promising candidates for use as anodes for safe, rechargeable lithium ion batteries with high energy and power densities. Titanium–niobium-based oxide electrodes have, however, exhibited relatively poor cycling performance as a result of pulverization. In this study, we report on a simple two-step solid-state reaction route for producing hybrid composites of Ti<SUB>2</SUB>Nb<SUB>10</SUB>O<SUB>29</SUB> (TNO) anchored on reduced graphene oxide (RGO), and the electrochemical performance of the resulting TNO/RGO composites. Solid-state reactions enable both the formation of TNO and the uniform distribution of RGO in the TNO/RGO composites. The TNO/RGO composites exhibited discharge and charge capacities of 261 and 256 mAh g<SUP>−1</SUP>, respectively, with much better cycling performance (182 mAh g<SUP>−1</SUP> after the 50th cycles) and rate capability (165 mAh g<SUP>−1</SUP> at a current density of 500 mA g<SUP>−1</SUP>) compared to the pure TNO.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Hybrid composites of Ti<SUB>2</SUB>Nb<SUB>10</SUB>O<SUB>29</SUB> anchored on reduced graphene oxide were fabricated. </LI> <LI> A simple two-step solid-state reaction method was employed. </LI> <LI> The hybrid composites exhibited greatly improved electrochemical performance. </LI> </UL> </P>
Wang, Jiao,Jin, En Mei,Park, Ju-Young,Wang, Wan Lin,Zhao, Xing Guan,Gu, Hal-Bon Springer 2012 NANOSCALE RESEARCH LETTERS Vol.7 No.1
<P>In this paper, in order to improve the efficiency of dye-sensitized solar cells, we introduced zirconia [ZrO<SUB>2</SUB>] nanofibers into a mesoporous titania [TiO<SUB>2</SUB>] photoelectrode. The photoelectrode consists of a few weight percent of ZrO<SUB>2 </SUB>nanofibers and a mesoporous TiO<SUB>2 </SUB>powder. The mixed ZrO<SUB>2 </SUB>nanofibers and the mesoporous TiO<SUB>2 </SUB>powder possessed a larger surface area than the corresponding mesoporous TiO<SUB>2 </SUB>powder. The optimum ratio of the ZrO<SUB>2 </SUB>nanofiber was 5 wt.%. The 5 wt.% ZrO<SUB>2</SUB>-mixed device could get a short-circuit photocurrent density of 15.9 mA/cm<SUP>2</SUP>, an open-circuit photovoltage of 0.69 V, a fill factor of 0.60, and a light-to-electricity conversion efficiency of 6.5% under irradiation of AM 1.5 (100 mW/cm<SUP>2</SUP>).</P>
Behaviors of Using Information Technology in Vehicles
( Lin Wang ),( Dayoung Ju ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
Distractions caused by using information technology in vehicles are no longer limited to making phone calls and sending text messages. There are much more products and applications nowadays which can potentially cause distractions. In order to get more knowledge on how these distractions happen and the influence on driving safety, this study investigates behaviors of using information technology in vehicles. Both qualitative and quantitative data will be collected by observation and survey. The research result will have significant meaning for both driving safety and the design of information products used in vehicles.
Wang, Cheng-Di,Li, Tai-Ming,Ren, Zheng-Ju,Ji, Yu-Lin,Zhi, Liu-Shou Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.11
Background: Macrophage migration inhibitory factor (MIF) -173G/C (rs755622) gene polymorphism has been associated with cancer risk. Previous studies have revealed that MIF -173G/C gene polymorphism may increase cancer in the Chinese population, while results of individual published studies remain inconsistent and inconclusive.We performed this meta-analysis to derive a more precise estimation of the relationship. Materials and Methods: We conducted a search on PubMed, Embase, MEDLINE, Cochrane Library, Chinese National Knowledge Infrastructure (CNKI), Wanfang, Weipu on Dec 31, 2014.Odds ratio (OR) and 95% confidence interval (95% CI) were used to assess the association. A total of eight studies including 2,186 cases and 2,285 controls were involved in this meta-analysis. Results: The pooled results indicated the significant association between MIF -173G/C polymorphism and the risk of cancer for Chinese population (CC + CG vs GG: OR=1.14, 95%CI=1.02-127, pheterogeneity<0.01; P=0.023; CC vs CG+GG: OR=1.12, 95%CI=1.02-1.23, pheterogeneity<001; P=0.017;CC vs GG: OR=1.18, 95%CI=1.04-1.33, pheterogeneity<001; P=0.008; CG vs GG:OR=1.03, 95%CI=0.91-1.15, pheterogeneity<001; P=0.656; C vs G:OR=1.24, 95%CI=1.14-1.25, pheterogeneity<001; P<001). Subgroup analysis showed that in patients with "solid tumors", heterogeneity was very large (OR=0.94,95%CI=0.83-1.06,pheterogeneity=0.044; p=0.297). Within "non-solid tumors", the association became even stronger (OR=6.62, 95 % CI=4.32-10.14, pheterogeneity<0.001; p<0.001). Conclusions: This study suggested that MIF -173G/C gene polymorphism may increase increase cancer in the Chinese population.Furthermore, more larger sample and representative population-based casees and well-matched controls are needed to validate our results.
Differential Protein Expression in EC304 Gastric Cancer Cells Induced by Alphastatin
Wang, Xin-Xin,Sun, Rong-Ju,Wu, Meng,Li, Tao,Zhang, Yong,Chen, Lin Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.4
Objective: To explore the differential protein expression profile in EC304 gastric cancer cells induced by alphastatin. Methods: Cultured EC304 cells in the exponential phase of growth were randomly divided into alphastatin and control groups. Total proteins were extracted and the two dimensional electrophoresis (2-DE) technique was applied to analyze differences in expression with ImageMaster 2D Platinum 5.0 software. Proteins were identified using the MASCOT database and selected differently expressed proteins were characterised by western blotting and immunofluorescence. Results: $1350{\pm}90$ protein spots were detected by the ImageMaster software in the 2-DE gel images from the control and alphastatin groups. The match rate was about 72-80% for the spectrum profiles, with 29 significantly different protein spots being identified, 10 upregulated, 16 downregulated, two new and one lost. The MASCOT search scores were 64-666 and the peptide matching numbers were 3-27 with sequence coverage of 8-62%. Twenty-three proteins were checked by mass spectrometry, including decrease in Nm23 and profilin-2 isoform b associated with the regulation of actin multimerisation induced by extracellular signals. Conclusion: The proteome in EC304 cells is dramatically altered by alphastatin, which appears to play an important role in modulating cellular activity and anti-angiogenesis by regulating protein expression and signal transduction pathways through Nm23 and profilin-2 isoform b, providing new research directions for anti-angiogenic therapy of gastric cancer.
The Paper Submitted to the Asian Conference on Ergonomics and Design
Lin Wang,DaYoung Ju 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.5
Distractions caused by using information technology in vehicles are no longer limited to making phone calls and sending text messages. There are much more products and applications nowadays which can potentially cause distractions. In order to get more knowledge on how these distractions happen and the influence on driving safety, this study investigates behaviors of using information technology in vehicles. Both qualitative and quantitative data will be collected by observation and survey. The research result will have significant meaning for both driving safety and the design of information products used in vehicles.
Wang, Wan Lin,Park, Ju-Young,Gu, Hal-Bon The Korean Institute of Electrical and Electronic 2014 Transactions on Electrical and Electronic Material Vol.15 No.6
A $Fe_3O_4$-graphite nanofiber composite for use as an anode material was successfully synthesized by calcining $Fe_3O_4$ and graphite nanofiber (GNF) together in a $N_2$ atmosphere. Using this $Fe_3O_4$-GNF composite in a lithium ion battery resulted in a higher lithium storage capacity than that obtained using $Fe_3O_4$-graphite ($Fe_3O_4$-G). The $Fe_3O_4$-GNF (10 wt%) electrode exhibited a higher lithium ion diffusion coefficient ($2.29{\times}10^{-9}cm^2s^{-1}$) than did the $Fe_3O_4$-G (10%) ($3.17{\times}10^{-10}cm^2s^{-1}$). At a current density of $100mA\;g^{-1}$, the $Fe_3O_4$-GNF (10 wt%) anode showed a higher reversible capacity ($1,031mAh\;g^{-1}$) than did the $Fe_3O_4$-G (10%) anode ($799mAh\;g^{-1}$). Moreover, the $Fe_3O_4GNF$ electrodes showed good cycling performance without the addition of a conductive material.