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Na Jihye,Chang Rakwoo 대한화학회 2021 Bulletin of the Korean Chemical Society Vol.42 No.7
We have performed coarse-grained molecular dynamics simulations of organic photovoltaic (OPV) 5wcells consisting of poly(3-hexyl-thiophene) (P3HT), phenyl-C61-butyric acid methyl ester (PC61BM), and phenyl-C71-butyricacid methyl ester (PC71BM) to investigate the effects of the solvent evaporation rate and the number of components in the morphological stability of OPV. Two different solvent evaporation processes were employed in this study. In the instantaneous solvent removal process, unstable pores are formed because of the slow translational relaxation of the electron receptors. In case of the gradual solvent removal process, the stable film formation is observed without any pore. In addition, the ternary OPV system shows better stability than binary systems by slowing down the phase separation.
Analysis of Statistical Methods Currently used in Toxicology Journals
Jihye Na,Hyeri Yang,SeungJin Bae,Kyung-Min Lim 한국독성학회 2014 Toxicological Research Vol.30 No.3
Statistical methods are frequently used in toxicology, yet it is not clear whether the methods employed by the studies are used consistently and conducted based on sound statistical grounds. The purpose of this paper is to describe statistical methods used in top toxicology journals. More specifically, we sampled 30 papers published in 2014 from Toxicology and Applied Pharmacology, Archives of Toxicology, and Toxicological Science and described methodologies used to provide descriptive and inferential statistics. One hundred thirteen endpoints were observed in those 30 papers, and most studies had sample size less than 10, with the median and the mode being 6 and 3 & 6, respectively. Mean (105/113, 93%) was dominantly used to measure central tendency, and standard error of the mean (64/113, 57%) and standard deviation (39/113, 34%) were used to measure dispersion, while few studies provide justifications regarding why the methods being selected. Inferential statistics were frequently conducted (93/113, 82%), with one-way ANOVA being most popular (52/93, 56%), yet few studies conducted either normality or equal variance test. These results suggest that more consistent and appropriate use of statistical method is necessary which may enhance the role of toxicology in public health.
Analysis of Statistical Methods Currently used in Toxicology Journals
Na, Jihye,Yang, Hyeri,Bae, SeungJin,Lim, Kyung-Min Korean Society of ToxicologyKorea Environmental Mu 2014 Toxicological Research Vol.30 No.3
Statistical methods are frequently used in toxicology, yet it is not clear whether the methods employed by the studies are used consistently and conducted based on sound statistical grounds. The purpose of this paper is to describe statistical methods used in top toxicology journals. More specifically, we sampled 30 papers published in 2014 from Toxicology and Applied Pharmacology, Archives of Toxicology, and Toxicological Science and described methodologies used to provide descriptive and inferential statistics. One hundred thirteen endpoints were observed in those 30 papers, and most studies had sample size less than 10, with the median and the mode being 6 and 3 & 6, respectively. Mean (105/113, 93%) was dominantly used to measure central tendency, and standard error of the mean (64/113, 57%) and standard deviation (39/113, 34%) were used to measure dispersion, while few studies provide justifications regarding why the methods being selected. Inferential statistics were frequently conducted (93/113, 82%), with one-way ANOVA being most popular (52/93, 56%), yet few studies conducted either normality or equal variance test. These results suggest that more consistent and appropriate use of statistical method is necessary which may enhance the role of toxicology in public health.
Fabrication of SnS Thin Film for Solar Cell Application Using Nano-particle Precursor
Na Kyoung Youn(윤나경),SeJin Ahn(안세진),Ara Cho(조아라),Jihye Gwak(곽지혜),Kyunghoon Yoon(윤경훈),Keeshik Shin(신기식),Seung Kyu Ahn(안승규),Jun Sik Cho(조준식),Joo Hyung Park(박준형),Jin Soo Yoo(유진수),Kihwan Kim(김기환),Jae Ho Yu 한국신재생에너지학회 2016 한국신재생에너지학회 학술대회논문집 Vol.2016 No.11
Fabrication of the CZTSSe solar cell based on co-evaporation
Na Kyoung Youn(윤나경),Jihye Gwak(곽지혜),Jae Ho Yun(윤재호),Young-Joo Eo(어영주),Kihwan Kim(김기환),Joo Hyung Park(박주형),Se Jin Ahn(안세진),Jin Su Yoo(유진수),Seung Kyu Ahn(안승규),Jun Sik Cho(조준식),Ara Cho(조아라),Dong Hwan Kim 한국신재생에너지학회 2017 한국신재생에너지학회 학술대회논문집 Vol.2017 No.9