Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Yun-Sung Choi"'
Publikováno v:
Forest Science and Technology, Vol 18, Iss 2, Pp 45-55 (2022)
Considerable amounts of noncommercial materials generated from thinning treatments remain unattended on the site because the value of small-sized timber is lower than overall thinning operation costs in South Korea. In addition, thinning operations w
Externí odkaz:
https://doaj.org/article/acb8243a9c904c7bb473cbf316fb86e9
Publikováno v:
Forests, Vol 14, Iss 4, p 851 (2023)
The forestry industry poses a higher risk of occupational accidents than other sectors, and understanding the occurrence and characteristics of injuries and fatalities is crucial for improving the safety and health of workers and establishing future
Externí odkaz:
https://doaj.org/article/11dc5bede8d44a63910d3f27b385ec2c
Autor:
Yun-Sung Choi, Min-Jae Cho, Seung-Ho Paik, Ho-Seong Mun, Dae-Hyun Kim, Sang-Kyun Han, Jae-Heun Oh
Publikováno v:
Forests, Vol 10, Iss 11, p 1029 (2019)
Forest biomass has recently been highlighted as a renewable energy source in South Korea. As the Renewable Energy Certificate weight has been revised to encourage the use of forest biomass for energy production, forest operations have focused on the
Externí odkaz:
https://doaj.org/article/6f50048492f946539b98bed609979d53
Autor:
Min-Jae Cho, Yun-Sung Choi, Seung-Ho Paik, Ho-Seong Mun, Du-Song Cha, Sang-Kyun Han, Jae-Heun Oh
Publikováno v:
Forests, Vol 10, Iss 9, p 763 (2019)
Interest in the production of renewable energy using forest biomass is increasing in South Korea, and improved knowledge on operations logistics to lower biomass harvesting costs is needed. This study aimed to build a low-cost forest-biomass harvesti
Externí odkaz:
https://doaj.org/article/5685f5af46934e20ac7bcff51409bf4b
Autor:
Heon Jun Jeong, Hyun Soo Park, Keun Hee Kim, Wanhyuk Chang, Yoon Seong Kim, Yun Sung Choi, Joon Hyung Shim
Publikováno v:
ECS Transactions. 111:2155-2160
This study reports on the performance improvement of a protonic ceramic fuel cell (PCFC) after a CoOx nanoparticle treatment has been applied to a PrBa0.5Sr0.5Co2-xFexO5+δ(PBSCF) cathode with a perovskite structure. CoOx nanoparticles are deposited
Publikováno v:
International Journal of Energy Research. 46:15387-15395
Autor:
Dong Joon Kim, Heon Jun Jeong, Jung Woo Shim, Yun Sung Choi, Jin Hyuk Lim, Beum Geun Seo, Joon Hyung Shim
Publikováno v:
International Journal of Energy Research.
In this study, to enhance the stability of the cathode platinum (Pt) catalyst in polymer electrolyte membrane fuel cells, cerium oxide (CeOx) was deposited by plasma-enhanced atomic layer deposition (PEALD) process on the Pt catalyst sputtered on the
Publikováno v:
International Journal of Forest Engineering. 33:139-145
Publikováno v:
Korean Institute of Smart Media. 10:28-34