Zobrazeno 1 - 10
of 153
pro vyhledávání: '"Ji Hun Lee"'
Publikováno v:
Polymers, Vol 16, Iss 15, p 2158 (2024)
Time-dependent emitted H2 content modeling via a reliable diffusion analysis program was performed for H2-enriched polymers under high pressure. Here, the emitted hydrogen concentration versus elapsed time was obtained at different diffusivities and
Externí odkaz:
https://doaj.org/article/2e9297bdc0e645a49dc83c809fd39e66
Publikováno v:
Polymers, Vol 16, Iss 2, p 280 (2024)
Hydrogen uptake/diffusivity in nitrile butadiene rubber (NBR) blended with carbon black (CB) and silica fillers was measured with a volumetric analysis method in the 258–323 K temperature range. The temperature-dependent H2 diffusivity was obtained
Externí odkaz:
https://doaj.org/article/6e7d3fd92cfe4cfe930e7afbf1fb925f
Autor:
Jae Kap Jung, Ji Hun Lee, Jin Sub Jang, Nak Kwan Chung, Chang Young Park, Un Bong Baek, Seung Hoon Nahm
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-13 (2022)
Abstract We demonstrate a simple experimental technology for characterizing the gas permeation properties of H2, He, N2 and Ar absorbed in polymers. This is based on the volumetric measurement of released gas and an upgraded diffusion analysis progra
Externí odkaz:
https://doaj.org/article/7ab9508569384957aa88ee842be44406
Autor:
Jae Kap Jung, Ji Hun Lee, Sang Koo Jeon, Un Bong Baek, Si Hyeon Lee, Chang Hoon Lee, Won Jin Moon
Publikováno v:
Polymers, Vol 15, Iss 1, p 162 (2022)
We investigated the influence of two fillers—CB (carbon black) and silica—on the H2 permeation of EPDM polymers crosslinked with sulfur in the pressure ranges 1.2–90 MPa. H2 uptake in the CB-blended EPDM revealed dual sorption (Henry’s law an
Externí odkaz:
https://doaj.org/article/57b41ea2fc49437babeb868b6632e55c
Autor:
Hyun Min Kang, Myung Chan Choi, Jin Hyok Lee, Yu Mi Yun, Jin Sub Jang, Nak Kwan Chung, Sang Koo Jeon, Jae Kap Jung, Ji Hun Lee, Jin Hong Lee, Young Wook Chang, Jong Woo Bae
Publikováno v:
Polymers, Vol 14, Iss 6, p 1151 (2022)
With the increasing interest in hydrogen energy, the stability of hydrogen storage facilities and components is emphasized. In this study, we analyzed the effect of high-pressure hydrogen gas treatment in silica-filled EPDM composites with different
Externí odkaz:
https://doaj.org/article/a0d4b772cfc24acebf84937be334efd2
Autor:
Jae Kap Jung, Chang Hoon Lee, Min Seok Son, Ji Hun Lee, Un Bong Baek, Ki Soo Chung, Myung Chan Choi, Jong Woo Bae
Publikováno v:
Polymers, Vol 14, Iss 4, p 700 (2022)
Filler effects on H2 diffusion in nitrile butadiene rubbers (NBRs) blended with carbon black and silica fillers of different concentrations are first investigated by employing a volumetric analysis. Total uptake, solubility, and diffusivity of hydrog
Externí odkaz:
https://doaj.org/article/7c7e9c450f034d6999a717eeb421e156
Publikováno v:
Organizational Cultures: An International Journal. Dec2022, Vol. 22 Issue 2, p41-53. 13p.
Based on Augmented Reality Development and Evaluation of Cognitive Training Applications for Elderly
Publikováno v:
Society of Occupational Therapy for the Aged and Dementia. 16:51-61
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c23c764785d684c522b3084362924e61
https://doi.org/10.34263/jsotad.2022.16.2.51
https://doi.org/10.34263/jsotad.2022.16.2.51
Autor:
Ji-hun Lee
Publikováno v:
YŎKSA WA HYŎNSIL : Quarterly Review of Korean History. 126:203-244
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e4be84d4daceb5a24d634ef03130025
https://doi.org/10.35865/ywh.2022.12.126.203
https://doi.org/10.35865/ywh.2022.12.126.203
Publikováno v:
Energies, Vol 15, Iss 2, p 461 (2022)
In this paper, the optimal design of a brushless direct current motor with a three-dimensional (3D) structure using the response surface methodology (RSM) is presented. There were two optimization goals: reduction of the cogging torque and maintenanc
Externí odkaz:
https://doaj.org/article/ef945fa892544eafa6b71820f0f20d17