A5100764831- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Spectroscopy and Laser Applications
- Innovation and Knowledge Management
- Innovation Policy and R&D
- Hydrogen Storage and Materials
- Firm Innovation and Growth
- Ammonia Synthesis and Nitrogen Reduction
- Entrepreneurship Studies and Influences
- Muon and positron interactions and applications
- Business Strategy and Innovation
- Meteorological Phenomena and Simulations
- Energy and Environment Impacts
- Surface Chemistry and Catalysis
- Air Quality Monitoring and Forecasting
- Plant Water Relations and Carbon Dynamics
- Fire effects on ecosystems
- Patient Satisfaction in Healthcare
- Catalytic Processes in Materials Science
- Recycling and Waste Management Techniques
- MXene and MAX Phase Materials
- Atmospheric aerosols and clouds
- Patient-Provider Communication in Healthcare
Seoul National University
2008-2025
Ewha Womans University
2023
Institute for Basic Science
2021
Korea Atomic Energy Research Institute
2018
The COllaborative Carbon Column Observing Network has become a reliable source of high-quality ground-based remote sensing network data that provide column-averaged dry-air mole fractions carbon dioxide (XCO2), methane (XCH4), and monoxide (XCO). fiducial reference measurements these gases from the COCCON complement TCCON NDACC-IRWG data. This study shows application for validation existing greenhouse gas satellite products. includes XCH4 XCO products European Copernicus Sentinel-5 Precursor...
Abstract Degradation in air quality could be a potential factor for decreasing solar photovoltaic (PV) power generation. However, our understandings of the airborne particulate matter (PM) to reduce actual PV generation remain unclear. This study quantifies attenuation impacts PM on cloudless days at Yeongam and Eunpyeong-gu plants installed Republic Korea. The reduction rate according substantial amount is calculated by constructing multiple regression models based record, observed...
A general problem when designing functional nanomaterials for energy storage is the lack of control over stability and reactivity metastable phases. Using high-capacity hydrogen candidate LiAlH4 as an exemplar, we demonstrate alternative approach to thermodynamic stabilization metal hydrides by coordination nitrogen binding sites within nanopores N-doped CMK-3 carbon (NCMK-3). The resulting LiAlH4@NCMK-3 material releases H2 at temperatures low 126 °C with full decomposition below 240 °C,...
Uniformly dispersed palladium species in small-pore zeolite are successfully prepared for catalytic applications, and investigated by advanced microscopic methods.
Abstract Despite the importance of understanding urban emission characteristics greenhouse gases (GHGs) and air pollutants, few studies have conducted integrated assessments across diverse environments. Herein, we a comprehensive evaluation GHGs pollutants in seven cities Northern Hemisphere using ground‐based Fourier transform spectrometers. Our analysis primarily focused on ratios excess column‐averaged dry‐air mole fractions carbon monoxide (CO) to dioxide (CO 2 ) (∆XCO:∆XCO those methane...
The Centers for Medicare and Medicaid Services will introduce the reporting of patient surveys in 2008. Consumer Assessment Health Care Providers Systems (CAHPS) Hospital Survey contains 18 questions about hospital care. Internal consistency reliability discharge information scale is relatively low some important domains care are not represented.To determine whether adding increases validity survey.Surveys patients at 181 hospitals participating California Hospitals Reporting Taskforce...
Social restriction in cities to curb infection rates of COVID-19 has become an opportunity investigate the relationship between humans and urban atmosphere. We evaluate impact decline human activities as a result social distancing on CO2 concentrations air quality Seoul during February March 2020 compared 2019. Due reduction activity 2020, local measurements CO NO2 show decrease background concentration (up –11.9% –41.7%, respectively) enhancement –16.7% –38.1%, previous year. In contrast,...
The development of biotechnology is particularly challenging to developing countries that must transform their manufacturing-based economies knowledge-based ones despite the high risk, lengthy times, and technological dominance a few developed countries. Some are implementing clusters develop industry. In this study, we examined emergence cluster in Daedeok Science Town, Korea, through social network analysis collaborations innovation; addition, examine association economic performance...
Cities are key contributors to climate change as they major sources of greenhouse gases and air pollutants. We use aircraft measurements carbon dioxide (CO2), methane (CH4), monoxide (CO) made during 2 observation days monitor the urban atmosphere Seoul, a megacity with large anthropogenic emissions. estimate that CO2, CH4, CO concentrations emissions extracted from background (i.e., enhancements; ΔCO2, ΔCH4, ΔCO) higher on average by 50.2, 68.6, 26.9%, respectively, in areas within Seoul...
There has been a lot of interest in R&D dynamics, including the persistency and volatility investment. However, there is lack empirical evidence supporting impact dynamics on firm growth context an economic crisis. This study examines effects during after global financial crisis 2008–2009. Based firm-level data, we construct balanced panel for 1,137 firms petrochemical industry. Our findings indicate that with show higher crisis, regardless size. large than smaller ones. In addition,...
Abstract Satellites provide global coverage for monitoring atmospheric greenhouse gases, crucial understanding climate dynamics. However, their temporal and spatial resolutions fall short in detecting urban‐scale variations. To enhance satellite reliability over urban areas, this study presents the first comprehensive analysis of long‐term observations column‐averaged dry air mole fractions CO 2 , CH 4 (XCO XCH XCO) using two ground‐based fourier transform infrared spectrometers, EM27/SUNs,...
본 연구에서는 전 세계적 탄소중립 제도 강화와 ESG경영 확대가 기업의 재무적 요소에 미칠 영향 파악 및 대응책 마련에 기반이 될 수 있는 온실가스 배출부채 시나리오 분석 모델을 제시하였다. 특히 환경(E) 부문에 주목했다. 국내 ESG경영에 작용하는 주요 환경 규제로 2015년부터 시행된 배출권 거래제를 선정했으며, 감축의 필요성이 큰 삼성전자를 대상으로 추정 후 분석을 진행하였다. 가격, 할당량, 유상할당비율 등 정책과 관련된 외재적 요소와 배출량, 신기술 감축효과 기업 역량과 내재적 요소를 지정하고 각 대한 가정을 바탕으로 가장 의미 네 가지 시나리오를 도출하였다. 결과 배출 부채는 추후 삼성전자에 상당한 리스크로 작용할 있으며, 신기술에 지속적인 투자를 통해 감축을 위한 노력이 필요할 것으로 보인다. 관련 기존 연구는 재무가치와 산업별 분석에 초점을 두고 있기에, 연구에서 활용한 기법은 법률 표준 확대에 사전 대응 시스템 구축에 유용한 도구로 기대한다.
Anthropogenic emissions of greenhouse gases from fossil fuel combustion have a significant impact on the global climate. Cities, which are home to more than half population, account for over 70% anthropogenic gas and major sources air pollution that we face today. However, as much they big emitters, cities also great potential be drivers reductions. To better manage atmospheric gases, it is necessary accurately monitor quantify at all spatial scales national urban levels. In addition using...
Abstract A general problem when designing functional nanomaterials for energy storage is the lack of control over stability and reactivity metastable phases. Using high-capacity hydrogen candidate LiAlH 4 as an exemplar, we demonstrate a new approach to thermodynamic stabilization metal hydrides by coordination nitrogen binding sites within nanopores N-doped CMK-3 carbon (NCMK-3). The resulting @NCMK-3 material releases H 2 at temperatures low 126 °C with full decomposition below 240 °C,...