Zobrazeno 1 - 10
of 296
pro vyhledávání: '"Yong Pyo, Kim"'
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 16, Iss 2, Pp 1-21 (2023)
Abstract In a situation where various policy measures can be used to reduce atmospheric particulates, effectiveness and efficiency may vary depending on how the policy is designed. Therefore, this study evaluated the effectiveness and efficiency of a
Externí odkaz:
https://doaj.org/article/0ec1c650712f4081bd53ca9057b59d6d
Autor:
Pyeung Hwi Choi, Yong Pyo Kim, Min-Seong Kim, Jiheon Ryu, Sung-Hyun Baek, Sung-Min Hong, Sungbae Lee, Jae-Hyung Jang
Publikováno v:
IEEE Access, Vol 10, Pp 109558-109564 (2022)
Photoconductive semiconductor switch (PCSS) allowing side illumination was fabricated on high purity semi-insulating (HPSI) 4H-SiC. A 532-nm pulsed laser with variable optical energy was used to trigger the PCSS. The performance of the PCSS was chara
Externí odkaz:
https://doaj.org/article/e6d6e9e2f94648b28443582e2b74bff3
Autor:
Heesung Chong, Seoyoung Lee, Yeseul Cho, Jhoon Kim, Ja-Ho Koo, Yong Pyo Kim, Younha Kim, Jung-Hun Woo, Dha Hyun Ahn
Publikováno v:
Environment International, Vol 171, Iss , Pp 107708- (2023)
North Korea’s air quality is poorly understood due to a lack of reliable data. Here, we analyzed urban- to national-scale air quality changes in North Korea using multi-year satellite observations. Pyongyang, Nampo, Pukchang, and Munchon were ident
Externí odkaz:
https://doaj.org/article/3c27cdf6d2cf464e955e920f3b263880
Publikováno v:
Nanomaterials, Vol 13, Iss 6, p 1127 (2023)
The effects of electrode materials (top and bottom) and the operating ambiances (open-air and vacuum) on the MgFx-based resistive random-access memory (RRAM) devices are studied. Experiment results show that the device’s performance and stability d
Externí odkaz:
https://doaj.org/article/a9256945f2a34f31822bc4c1d3e8d9b0
Autor:
Chang Hoon Jung, Hyung-Min Lee, Dasom Park, Young Jun Yoon, Yongjoo Choi, Junshik Um, Seoung Soo Lee, Ji Yi Lee, Yong Pyo Kim
Publikováno v:
Journal of Environmental Sciences. 132:43-55
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f2caecaa6a384766e4a920e4a45e2f7
https://doi.org/10.1016/j.jes.2022.07.031
https://doi.org/10.1016/j.jes.2022.07.031
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 14, Iss 1, Pp 35-46 (2020)
Routine measurements of carbonaceous species in PM2.5 inculidng organic carbon (OC), elemental carbon (EC), water-soluble organic carbon (WSOC), and humic-like-substance carbon (HULIS-C) in PM2.5 were performed at Anmyeon Island (AI) to clarify the s
Externí odkaz:
https://doaj.org/article/556fe7bd48be42f7829009d3727905c9
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 13, Iss 2, Pp 88-98 (2019)
Two approaches were applied for characterization of organic compounds in the atmospheric aerosols. These were chemical and statistical grouping analysis. We applied chemical group analysis as a new approach using the GC×GC data. Based on the princip
Externí odkaz:
https://doaj.org/article/dd977a876baf4e9da92b291e98015bda
Autor:
Sanghee Han, Ji Yi Lee, Jongsik Lee, Jongbae Heo, Chang Hoon Jung, Eun-Sill Kim, Yong Pyo Kim
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 12, Iss 4, Pp 311-325 (2018)
To identify and quantify the contribution of the major sources for the ambient carbonaceous aerosols at a Global Atmosphere Watch (GAW) station in Korea, a receptor model, the Positive Matrix Factorization (PMF) model was applied for the one-year lon
Externí odkaz:
https://doaj.org/article/0913adc1f675441abb0933ee7fb12d05
Long-Term Trend of the Levels of Ambient Air Pollutants of a Megacity and a Background Area in Korea
Publikováno v:
Applied Sciences, Vol 12, Iss 8, p 4039 (2022)
It is imperative to understand the changes of the levels of air pollutants in Northeast Asia with respect to the changes of the emissions of air pollutants. In this study, we analyzed long-term trends of both the chemical composition of fine particle
Externí odkaz:
https://doaj.org/article/acc83fcfa812468eb4ff35552af2f1ee
Publikováno v:
Atmosphere, Vol 12, Iss 12, p 1676 (2021)
Atmospheric ammonia (NH3) plays a critical role in PM2.5 pollution. Data on atmospheric NH3 are scanty; thus, the role of NH3 in the formation of ammonium ions (NH4+) in various environments is understudied. Herein, we measured concentrations of NH3,
Externí odkaz:
https://doaj.org/article/dd7164008dd4492cabac0cd9159c5fae