Cytotoxicity and inhibition cell growth assessment in lung epithelial cell A549 of cinnamaldehyde

Eum-Ji Kim,Jean Yoo,Yeon-Mi Lim,Hawon Kim,Hyun-Mi Kim,Il-Seob Sim,Pilje Kim,Seung Do Yu 한국분석과학회 2017 학술대회논문집 Vol.2017 No.11

한국 기업의 사회적책임 활동이 경영성과 및 기업가치에 미치는 영향

엄승섭(Eum, Seung-Sub),김현도(Kim, Hyun-Do),김동순(Kim, Dong-Soon) 한국경영교육학회 2021 경영교육연구 Vol.36 No.6

[연구목적] 본 연구에서는 기업의 사회적책임(CSR) 활동이 기업의 경영성과 및 기업가치에 미치는 영향을 실증분석하고, 그 시사점을 제공하고자 하였다. [연구방법] 본 연구는 기업의 사회적책임(CSR) 활동이 경영성과 및 기업가치에 미치는 영향에 대한 기존에 수행되었던 연구들과 논의를 충분히 검토하였고, 이를 바탕으로 4가지 가설을 도출하였다. 본 연구는 2011년~2014년까지 한국지배구조원에서 발표하고 있는 ESG점수를 사회적책임(CSR) 활동의 대용변수로 활용하여 실증분석을 실행하였다. [연구결과] 기업의 사회적책임(CSR) 활동이 경영성과 및 기업가치에 미치는 영향을 분석한 결과, 첫째, R&D 지출과 CSR 간에는 통계적으로 유의하게 양(+)의 관계가 나타났다. 둘째, CSR과 매출액 간에도 유의한 양(+)의 관계가 나타났다. 셋째, CSR과 수익성 (ROA, ROE) 간에는 유의한 음(-)의 관계가 나타났다. 넷째, CSR과 기업가치(Tobin’s Q, PBR)는 유의한 양(+)의 관계가 나타났다. [연구의 시사점] 기업의 사회적책임(CSR) 활동은 매출액에 대해서는 긍정적인 영향을 미치는 것으로 나타났으나, 수익성에는 부정적으로 작용하는 것으로 나타났다. 그러나 비록 수익성은 낮더라도 매출액 증가로 인하여 절대적인 수익 증가가 나타난다면 장기적으로 기업가치는 증대할 것으로 기대된다. 향후 이에 대한 추가연구가 필요할 것으로 판단된다. [Purpose] In this study, we aimed to provide suggestions by examining the impact of CSR activities on corporate performance and firm value. [Methodology] We conducted an empirical analysis using ESG scores published by the Korea Governance Service from 2011 to 2014 as a proxy for CSR activities. [Findings] We found the following empirical results. First, we found a positive and significant relation between R&D expenditures and CSR activities. Second, we found a positive and significant relation between CSR and sales. By contrast, the relation between CSR and profitability (ROA and ROE) was significantly negative. Fourth, we found a positive and significant association between CSR and firm value (Tobin’s Q and PBR). [Implications] Korean firms’ CSR activities were found to have a positive effect on sales, but negatively on profitability. However, even if short-term profitability is low, an increase in sales along with R&D expenditures can lead to an increase in long-term firm value.

부인과 영역에서 자궁절제경 수술의 유효성

이현주 ( Hyun Joo Lee ),신현찬 ( Hyun Chan Shin ),정희웅 ( Hee Woong Jeong ),정철권 ( Chul Gwon Chung ),권민정 ( Min Jeong Gwon ),엄상탁 ( Sang Tag Eum ),박경도 ( Kyung Do Park ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.6

목적 : 본원에서 비정상적 자궁내막 소견을 보이는 환자를 대상으로 자궁 절제경을 시행하여, 그 치료효과, 임신 성공률, 그리고 진단된 절제경 및 병리학적 소견에 대해 조사하였다. 연구 방법 : 1995년 5월부터 2000년 12월까지 불임증, 비정상적 자궁출혈 및 월경과다를 주소로 내원한 환자 중 비정상적 자궁내막소견을 보인 110명 환자를 대상으로 하였다. 비정상적 자궁내막 소견을 보인 불임환자와 비정상적 자궁출혈 환자는 자궁절제경 수술을 시행하였고, Objective : The purpose of our study is to find out the therapeutic effectiveness, reproductive outcome, and the diagnostic pathologic findings of the patients treated with resectoscopy. Methods : We examined 110 patients who complained infertility, abnor

함정근무자의 멀미치료제 복용에 관한 환자 경험

김도연 ( Do Yeon Kim ),엄석현 ( Suk Hyun Eum ),성태희 ( Tae Hui Sung ) 국군의무사령부 2018 대한군진의학학술지 Vol.49 No.1

Objectives; The current prescription for sea sickness compromises dimenhydrinate antihistamine medication. However, the effect of caffeine on sea sickness is controversial. This study was conducted to study patient experience on the current anti-sea sickness medications and to compare patient experience of dimenhydrinate plus caffeine compound to dimenhydrinate single medication. Methods; This research was a retrospective survey study in a naval destroyer. The study population included all visitors to a ship clinic due to sea sickness and who were prescribed dimenhydrinate plus caffeine compound or single dimenhydrinate from May 2018 to June 2018. We collected age, gender, sailor experience, and the duration from administration to symptom relief. Misery scale before and after using medications were checked for scoring sea sickness. Two sides were compared with Kruskal-Wallis univariate analysis. The effectiveness of medications were also evaluated with 4 categorized symptoms as follows: Gastrointestinal, neurologic, autonomic, and generalized symptoms. Results; Among 61 included patients, 37 patients took dimenhydrinate plus caffeine and 24 patients took single dimenhydrinate. The duration from administration to symptom relief were not different (66.5 and 57.7 minutes, p=0.276) in two groups. Misery scale after usage had no difference (0.9 and 0.7). When comparing 4 symptoms, symptom relief was obtained for gastrointestinal (25% and 29.7%) and neurologic (20.8% and 19.8%) symptoms, respectively. However, caffeine compound showed higher symptom relief proportion (35.1%) than dimenhydrinate single (20.8%). Conclusions; There were no significant difference in overall sea sickness severity between dimenhydrinate plus caffeine and dimenhydrinate single. However, autonomic symptoms were more likely to be relieved by caffeine compound.

심리상태가 함정근무자의 뱃멀미에 미치는 영향

김도연 ( Do Yeon Kim ),엄석현 ( Suk Hyun Eum ),성태희 ( Tae Hui Sung ),이한동 ( Han Dong Lee ) 국군의무사령부 2018 대한군진의학학술지 Vol.49 No.1

Objectives; Naval crew are under continuous exposure and inevitable situation from sea sickness because of occupational reasons. This research aimed at report the present state of sea sickness and psychologic status in navy crew and study effects of psychologic factors on sea sickness. Methods; This research was designed as questionnaire-based cross-sectional study. This study included 86 healthy sailors who were members of a naval destroyer. We collected age, gender, sailor experience, baseline characteristics of motion sickness and its score using Misery Scale. For evaluation of psychologic status, Beck's depression inventory and Beck's anxiety inventory were conducted. Kruskal-Wallis univariate analysis and linear logistic analysis was done for statistical establishment. Results; People who had ever suffered from sea sickness were 67 (77.9%) and 18 people could not adjust to sea sickness after a sailing experience until the study. The score of Beck's depression inventory had linear association with final Misery scale, but not first Misery scale. Beck's anxiety inventory score was not associated with adjustment of sea sickness. Sixteen responders had an experience to be ignored in sea sickness management due to its position, and 21 responders due to their current duty. Conclusions; We concluded that the adjustment of sea sickness was associated with depression but not anxiety. Therefore active psychologic counseling in a ship will help crew to adjust to sea sickness.

뱃멀미지수와 해군 함정 승조원의 멀미약 소비량과의 관계

김도연 ( Do Yeon Kim ),박기웅 ( Ki Woong Park ),양수경 ( Soo Kyung Yang ),신기식 ( Ki Sik Shin ),엄석현 ( Suk Hyun Eum ),한광남 ( Gwang Nam Han ),김명원 ( Myung Won Kim ) 국군의무사령부 2019 대한군진의학학술지 Vol.50 No.1

Objectives; Korea Hydrographic and Oceanographic Agency (KHOA) developed Korean motion sickness index which estimates the incidence of sea sickness and helps prevention of sea sickness for citizens and ship crew. Because avoidance of sea sickness is impossible for naval crew, prevention and supply of anti-sea medication is important in sailing. Method and material; This research was an ecologic study in two naval destroyers. The study included available sailing days which includes domestic sail records from April 2018 to October 2018. We collected daily Korean motion sickness index from KHOA and daily supply of anti-motion sickness medication. Motion sickness index was divided into 5 stages (Very good, good, usual, bad, very bad). We defined anti-motion sickness medication consumption rate (AMCR) as (total consumption of anti-motion sickness medication) / (total crew numbers) X 100. Motion sickness index and AMCR were compared with univariate analysis. Results; Among available 60 sailing days, motion sickness index of good was 15 days, usual was 31, and bad was 14 days. There was no very good or very bad days among sailing days. Average scores of components in motion sickness index were 3.32 for wave height, 4.42 for ship weight, 1.55 for sailing time, and 2.72 for maximum wind speed. Averagic AMCR were 2.44%. AMCR for good sailing day was 0.22%, usual was 1.36%, and bad was 6.99%. The medication consumption was increased in bad sailing day by 31 times. Conclusions; We found inverse correlation between motion sickness index and AMCR in this study. Before sailing, supply of motion sickness medication could be estimated through Korean motion sickness index.

Cutaneous Polyarteritis Nodosa Presented with Digital Gangrene: A Case Report

Seung Won Choi,Sogu Lew,Sung Do Cho,Hee Jeong Cha,Eun A Eum,Hyun Chul Jung,Jae Hoo Park 대한의학회 2006 Journal of Korean medical science Vol.21 No.2

피치각과 날개 길이에 따른 축류팬의 성능

전성택(Sung-Teck Jeon),김내현(Nae-Hyun Kim),조진표(Jin-Pyo Cho),음현진(Hyun-Jin Eum),김도균(Do-Kyun Kim) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.11

Fan through the rotor mechanical energy applied to the gas pressure and the rate of energy change what survives of the industrial system, the fluid machine is a major component. Axial flow fan used in this study, the blade and hub are separate blades can adjust the pitch angle is constructed. Variation of pitch axial flow fan performance was confirmed by experiments investigated the effect of the length of the blade. Pitch angle of 5° to 20°~45° at intervals of 6 degrees were measured by varying the fan blade airfoil in the form of the same length 90㎜, 100㎜, 110㎜, 120㎜ axial flow fans by changing the performance; The following conclusions were drawn. The pitch angle of 35° above the blade length of all the values in the airflow and static pressure grows, so look sharp decline. According to the same pitch angle, air flow from the static pressure has a similar slope. If you have the same pitch angle, power consumption, depending on the value of airflow and gentle slopes that have a longer blade length, which shows higher power consumption. fan efficiency is maximum value was observed in 30° pitch angle 20°~30° pitch angle shows a similar result

Single-Step EUS-Guided Transmural Drainage of Pancreatic Pseudocysts: Analysis of Technical Feasibility, Efficacy, and Safety

( Ji Yong Ahn ),( Dong Wan Seo ),( Junbum Eum ),( Tae Jun Song ),( Sung Hoon Moon ),( Do Hyun Park ),( Sang Soo Lee ),( Sung Koo Lee ),( Myung Hwan Kim ) 대한소화기기능성질환·운동학회 2010 Gut and Liver Vol.4 No.4

Background/Aims: With the progress of product development, single-step endoscopic ultrasound (EUS)- guided transmural drainage can overcome some disadvantages of the blind or two-step procedures used in the treatment of pancreatic pseudocysts. We therefore evaluated the technical feasibility, efficacy, and safety of single-step EUS-guided transmural drainage of pancreatic pseudocysts. Methods: Endoscopic drainage of pancreatic pseudocysts was performed in 47 patients (median age, 46 years; range, 38 years to 59 years; 40 men) by using interventional echoendoscopes with a single-step device suitable for ballooning, bougination, and plastic-stent insertion. Results: Endoscopic stent placement was successful in 42 patients (89%; transgastric approach, 34/38; transduodenal approach, 8/9) and failed in 5 patients because of acute angulation (n=4) or small cyst (n=1). The volume of the pseudocyst was reduced by more than 90% or it disappeared completely in all of 41 patients (100%), based on a mean follow-up period of 17 months (range, 11 months to 20 months). The overall recurrence rate was 12% (5/41) after improvement by the procedure. Minor complications (one case of bleeding, three cases of pneumoperitoneum, and one case of peritonitis) occurred after the procedure in five patients (11%), but there were no major complications. Conclusions: Single-step EUS-guided transmural drainage can be used to treat pancreatic pseudocysts with acceptable feasibility, efficacy, and safety. (Gut Liver 2010;4:524-529)

피치각과 날개 길이 변화에 따른 축류팬의 성능 및 소음 특성에 관한 실험적 연구

전성택(Sung-Teck Jeon),김내현(Nae-Hyun Kim),조진표(Jin-Pyo Cho),음현진(Hyun-Jin Eum),김도균(Do-Kyun Kim) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10

In this study, the blade and hub are separate blades can adjust the pitch angle is constructed. Variation of pitch axial flow fan performance was confirmed by experiments investigated the effect of the length of the blade. Pitch angle of 5° to 20°~45° at intervals of 6 set were measured by varying the fan blade airfoil in the form of the same length five steps(80mm, 90mm, 100mm, 110mm, 120mm) axial flow fans by changing the performance. According to the same pitch angle, air flow from the static pressure has a similar slope. Same pitch angle, power consumption, depending on the value of airflow and gentle slopes that have a longer blade length, pitch angle change was difficult to find a relationship in which each pitch, each of surging point is judged to be due to the impact of the change. Due to changes in the length of the fan blade pitch angle, which shows the noise characteristics by pitch angle increases, the noise also increases the value and the same pitch angle.