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서울시 전기차 온실가스 간접배출량 산정과 인벤토리 반영 방안
한진이,유정민 한국기후변화학회 2023 한국기후변화학회지 Vol.14 No.4
The number of electric vehicles (EVs) in Seoul has been increasing rapidly since 2017, reducing greenhouse gas (GHG) emissions compared to conventional fuel vehicles. However, the current GHG inventory in Seoul does not accurately reflect emissions from EVs, as they are erroneously categorized under the building sector instead of under transportation. Although the emissions from EVs are not significant, their expected growth necessitates proper classification within GHG inventories. Without adequately calculating emissions by sector, it becomes challenging to establish and analyze local GHG reduction policies. To address this issue, this study was conducted in Seoul's 25 districts to determine the amount of charging required for electric vehicles. The study then trialed two different approaches to calculate GHG emissions. Gangnam-gu had the highest amount of emissions in both calculation methods. However, Geumcheon-gu and Yangcheon-gu had much higher emissions when geographical boundaries of charging were used. In order to accurately calculate EVs emissions based on VKT (Vehicle Kilometers Traveled), clear guidelines for the calculation of HEVs (Hybrid Electric Vehicles) emissions are required. This study recommends measures to enhance the precision of the GHG inventory, ensuring that emissions from EVs are appropriately accounted for within the transportation sector.
한국 기업의 기후변화 대응 평가: 전기・전자・통신 분야를 중심으로
한진이,윤순진,소윤미,김지혜,김지환 한국환경정책학회 2019 環境政策 Vol.27 No.3
This study assesses the response of Korean electronics companies to climate change and compares them with the climate behavior scores of Japanese electronics companies evaluated by WWF Japan. Evaluation indicators focused on two main sectors: targets and performances, and information disclosure. It was found that most Korean electronics companies do not have long-term targets when setting their GHG(Green House Gas) reduction targets, and many do not set their targets in view of life-cycle management. Many companies have aggressive targets based on absolute quantities, but only one has achieved the actual GHG reduction target. Actual emissions do not correlate with climate action scores, which means that the companies’ climate action does not lead to actual performance. Most companies scored high on information disclosure. Foreign investment shares and climate action scores were positively correlated. This study found that Korean electronics companies are more active in setting goals and are good at disclosing information; however, Japanese companies are better at achieving actual goals and comparing performance. 이 연구는 한국 전자기업의 기후행동을 평가하고, WWF Japan에서 평가한 일본 전자기업의 기후행동 점수와 비교했다. 평가지표는 크게 목표 및 성과, 정보공개 두 부문, 하위 21개 세부 지표로 구성되었다. 한국 전자기업은 온실가스 감축 목표 설정 시 장기목표를 가지고 있는 기업이 많지 않았고, 전범위 관점을 고려하여 목표를 설정한 기업도 많지 않았다. 많은 기업이 절대량을 기준으로 적극적인 목표를 가지고 있었으나, 실제 온실가스 목표를 달성한 기업은 1곳에 불과했다. 실제 배출량 추이가 기후행동 점수와 상관관계가없는 것으로 보아, 기업의 기후행동이 실질적인 성과로 연결되지 않음을 알 수 있다. 정보공개 부문에서 대부분의 기업이 높은 점수를 획득하였다. 외국인 투자 지분과 기후행동 점수는 정(+)의 상관관계가 있는 것으로나타났다. 일본 전자기업과 비교 결과, 한국 전자기업들은 목표 설정에 더 적극적이고, 정보공개를 잘하고 있는 것으로 나타났지만, 실제 목표 달성과 성과 이행 비교는 일본의 기업들이 더 우수한 것으로 나타났다.
한진이,문용진,한종현,김종훈,우재훈,유환수,홍진태,안희열,홍종면,오기완 대한약학회 2016 Archives of Pharmacal Research Vol.39 No.9
A human study of the effects on hemodynamics of caffeine and epigallocatechin-3-O-gallate (EGCG) was performed. Caffeine tablets (200 mg) were orally administered to healthy males aged between 25 and 35 years 30 min after oral administration of EGCG tablets (100 and 200 mg). The increase in BP induced by caffeine was inhibited when co-administrated with EGCG. We found that caffeine slightly decreased heart rate (HR) in the volunteers. Although EGCG enhanced HR reduction, the effect was not significant. In addition, caffeine increased blood catecholamine levels, but EGCG inhibited the increase in noradrenaline, adrenaline and dopamine levels induced by caffeine. Whether EGCG decreases the elevated HR and systolic perfusion pressure, and ventricular contractility induced by adrenergic agonists in the isolated rat heart was investigated. The modified Krebs–Henseleit solution was perfused through a Langendorff apparatus to the isolated hearts of rats. HR, systolic perfusion pressure, and developed maximal rates of contraction (+dP/dtmax) and relaxation (-dP/dtmax) were increased by epinephrine (EP) and isoproterenol (IP). In contrast, EGCG decreased the elevated HR, systolic perfusion pressure, and left ventricular ±dp/dtmax induced by EP and/or IP. In conclusion, EGCG could attenuate the hemodynamics stimulated by caffeine through decreasing catecholamine release.