A Study on Korean Products Distribution through Overseas Purchasing in China

Dai,Wen-Qian,Lee,Jong-Ho 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-

Nowadays, Korean products are prevailing all over the world. Especially in China they including cosmetics, clothes, etc. are very popular. But because of THAAD, China s people can t go or travel to Korea. Instead of travelling Korea, they usually make use of overseas direct purchasing with the booming in current online shopping. Ironically, in spite of bad conditions, they used to buy Korean cosmetics by way of overseas purchasing . Therefore the revenue on Korean cosmetics is growing up more and more. According to the results, first, the security, convenience and information provided by the overseas direct purchase have already had a positive impact on the satisfaction. Second, the quality of the delivery service is composed of four factors: rapidity, reliability, intimacy and correctness. third, the research results indicate that the satisfaction level has a positive impact on the re-purchase intention.

Coagulant와 Hydro-cyclone을 결합한 상향류식 여과시스템

김명호,고대현,정다래,이준호 한국교통대학교 2021 한국교통대학교 논문집 Vol.56 No.-

Coagulation Hydro-cyclone can be added to the upward flow filtration system utilizing Fiber-Ball filter media to analyze and evaluate the treatment characteristics in order to Non-point pollution, which is a pollution problem, more efficiently. Hydro-cyclone was added to the existing Filter column to create an Up-Flow Filtration system. The treatment efficiency according to the operating conditions such as turbidity, suspended solids, pH, inflow flow rate, and head loss was analyzed. Comparison of inflow water and runoff water suspended solids and turbidity analysis results showed a minimum treatment efficiency of 93.21% and a maximum treatment efficiency of 99% or more. It was analyzed that the SS and turbidity analysis results showed a treatment efficiency of 80% or more before and after backwashing twice. When Coagulation Hydro-cyclone was added compared to the existing filtration system, it was analyzed that particles that had not been treated as an adsorption fiber company filter medium between particles could be treated.

에어리프트 펌프를 이용한 정밀여과막 세척

이준호,김명호,고대현 韓國交通大學校 2022 한국교통대학교 논문집 Vol.57 No.-

The MBR method, also known as the membrane separation active sludge method, does not require a precipitation tank and has many advantages such as stable discharging water. The biggest disadvantages of the MBR method, which has many advantages, are maintenance problems due to reduced flux due to fouling, decreased processing efficiency, and membrane replacement. In this study, in order to reduce membrane pollution, membrane cleaning was performed using the washing principle of the airlift pump, and shear force according to the amount of air was analyzed using the Ansys Fluent computational fluid dynamics program. As a result of the analysis, the film recovery rate was 93.8% to 97.3% and the average was 95.8%, and the CFD analysis showed the highest shear force at about 5.425×10-2Pa at 10m3/m2/hr. It is believed that the MBR device using Airlift in this study can maximize the flux recovery rate by reducing the problem of membrane contamination.

一部 銀行員들의 疲勞度 自覺症狀에 關한 調査硏究

鄭成浩,鄭善太,洪大容 慶尙大學校 1985 論文集 Vol.24 No.1

A survey was carried out on subjective symptoms of fatigue of 132 bank clerks (male 77, female 75) in Chin-ju city in order to measure the degree of fatigue caused by wory by questionaire form. The data were analyzed by sex, age and years employed. The results obtained are summarized as follows : 1. General char acteristics of respondents are as follows: For male, the majority was (distributed from the early twenty to late thirty, but for female, early twenty, As for the years employed, 5 years-mor egroup for male and 3-4 years group for female were found to be the majorty. 2. As for the composition of subjective symptoms, there were found I (physical) >Ⅱ (mental) > Ⅲ (neurosensory) type in male, while I>Ⅱ>Ⅲ type in female at both before and aftre work. 3. The lowest percent of complaints were found in25-29 age group for male and 20-24 age group for female . 4. The lowest percent of complaints were found in 3-4 years employed group for male and 1-B years employed group for female. 5. The signifcant correlationships between before and after work were found in physical symptoms for male(P<0.05), while in mental (p<0.01) and neurosensory symptoms(pc<0.05) for female.

용매침윤 수지에 의한 중금속 회수에 관한 연구

李大云,李垣,金珠姬,李承頀 연세대학교 대학원 1981 延世論叢 Vol.18 No.1

The application of the solvent-impregnated resin(SIR), 5,7-dibromo-8-hydroxyquinoline(DBQ)-impregnated polyurethane foam, to the selective recovery of some heavy metal ions from aqueous solution was investigated. The adsorption behavior of DBQ on polyurethane foam was studied to determine the optimum conditions for preparing the SIR. It was found that SIR impregnated with DBQ had adsorption capacity about 5×10-2 mmol M(II) per gram foam. The conditions for recovery and readsorption of metal ions were determined.

박테리아의 生育에서 Aspergillas flavus 抽出物과 SH group의 相關作用

李大熙,崔鎬亨 공주대학교 사범대학 과학교육연구소 1987 과학교육연구 Vol.19 No.1

Aspergillus flavus 抽出物과 Aflatoxin 및 ρCMB가 박테리아의 생장과 증식과정에 미치는 형태와 억제의 정도 및 작용의 유사성을 조사하기 위하여 이들 각각의 저해 물질들을 배양액에 처리하여 박테리아를 배양 실험하였다. 또한 SH group이 이들 저해물질들의 저해작용을 완화할 수 있는지의 여부를 조사하기 위하여 각 저해물질과 glutathione을 同量으로 처리하여 박테리아의 증식변화를 추적하였다. 얻어진 결과는 다음과 같았다. 1. Aspergillus flavus 抽出物 1mg(dry weight) 은 박테리아 증식을 50% 억제하였다. 2. Aflatoxin B₁을 농도별로 배양액에 처리한 결과 박테리아 증식은 10??M 에서 45% 10??M에서 21%정도 억제되었다. 3. ρCMB 10??M에서 박테리아 생장과 증식은 45% 억제되었다. 4. Aflatoxin B₁과 ρCMB는 박테리아의 생육억제의 크기나 형태변화 유발등에서 유사하였다. 그러나 생육장해를 주는 방법에 있어서는 서로 차이가 있었다. 5. ρCMB의 장해는 glutathione에 의하여 보완적이었으나 Aflatoxin B₁에 의한 장해는 거의 보완되지 않았다. 6. Aspergillus flavus 抽出物에 의하여 박테리아의 증식이 억제되었을 경우 glutathione처리를 하였을 때 14%정도 보완되었다. 7. Aspergillus flavus 抽出物중에서 박테리아 生育을 억제하는 성분은 Aflatoxin만이라고 한정할 수 없었으며 또한 그 저해작용은 SH아미노산에 의하여 상당히 보완될 수 있었다. In order to examine mode and rate of inhibition and the similarity of biochemical process that Aspergillus flavus extract aflatoxin and ρCMB effect on the process of its growth and reproduction of bacteria, it was experimented as treating each inhibitor into bacterial culture medium. In order to examine whether SH group could be on the decrease in the rate of inhibition, the reproductive mode in bacteria was investigated by means of treating as the same amount of each inhibitor and glutathione. Reproduction and groth of bacteria was decreased about 50% by Aspergillus flavus extract lmg(dry weight) Reproduction of bacteria was inhibited about 45% in 10??M and 21% in 10??M. The reproduction of the bacteria was decreased 45% in 10??M ρCMB-treated medium. Aflatox B₁and ρCMB showed the similar tendency of the inhibition rate in reproduction and causing the alternation of morphologic modification of bacteria. However, there were dissimiliar to the phenomenon of inhibition. The inhibition of ρCMB was offset by glutathione in the large percentage but the inhibition by aflatoxin was not almost offset by aflatoxin. Inhibition by Aspergillus flavus extract was offseted about 14% by treatment of 10??M glutathione. Inhibitory components of Aspergillus flavus extract could not define only aflatoxin and inhibition could be same offset by glutathione.

이호우 시조에 나타난 비극성의 고찰

정대호 韓國語文學會 2002 語文學 Vol.0 No.77

수은화합물이 마우스 복강대식세포와 EMT-6 세포에 미치는 효과

고대하,염정호,기노석,오경재,권근상,김성엽,김남송 大韓産業醫學會 1996 대한직업환경의학회지 Vol.8 No.2

Balb/c 마우스의 복강대식세포 및 유선암에서 기원한 EMT-6 세포를 배양하는 조건에 여러농도의 수은을 첨가하여 nitrite와 nitrate 생성의 변화를 관찰한 결과는 다음과 같다. 복강대식세포 및 EMT-6 세포가 생성하는 nitrite와 nitrate 양은 배양시작 12시간째의 생성량에 비해 24시간 후에는 2배, 36시간 후에는 3배의 농도로 측정되어 된다. 이때 nitrite와 nitrate 농도사이에는 매우 높은 상관관계를 나타냈다. 수은첨가에 따라 nitrite 및 nitrate 생성량은 용량의존적 관계로 현저한 감소를 보이며, 24시간 또는 36시간 후의 세포생존률도 역시 수은농도에 비례하여 감소되는데, 복강대식세포의 생존률이 EMT-6 세포의 생존률보다 더욱 큰 폭으로 감소하였다. 이상의 결과로 배양조건에 수은의 첨가로 인하여 nitrite 및 nitrate 생성량이 감소하는 바 수은이 면역세포의 대사과정에 영향을 주어 nitric oxide 생 성능을 억제시키며, 결국 세포성 면역을 저하시키는 것으로 사료된다. The effect of treatment of mercury chloride on the nitrite and nitrate synthesis was observed in peritoneal macrophages from Balb/c mice and EMT-6 cells in vitro. The cells were cultured in Dulbecco's modified Eagle's medium (DMEM) with cytokines. Amounts of nitrite and nitrate in the culture media after 24 and 36 hours of culture were about 2-fold, 3-fold of those measured after 12 hours respectively. There were very close associations between the amounts of nitrite and nitrate measured in the culture media, according to culture time. The survival rate of peritoneal macrophages was significantly decreased by mercury chloride added into the media in dose-dependent manner, however the survivals of EMT-6 cells were not influenced by mercury chloride concentration in media. Nitrite and nitrate syntheses were dose-dependently decreased by mercury chloride added in culture media. These results reported here suggest that the disorder of cell mediated immunity by mercurials could be related to the inhibition of nitric oxide synthesis which seems to be caused by the inhibition of metabolism of cells.

웨이블렛 변환을 이용한 정전 탐침 자료 분석 알고리즘 개발

김곤호,김대경,황순모,김용현 한양대학교 이학기술연구소 1999 이학기술연구지 Vol.1 No.-

ECR 식각 플라즈마에서 정전 Langmuir 탐침으로 얻은 자료의 해석을 위하여 Dauberchies 웨이블렛과 이중 직교 웨이블렛 변환을 이용한 새로운 알고리즘을 개발하였다. 이 알고리즘을 이용한 자료해석 방식에서는 해석자의 선택적 입력 값을 최소로 하고 자료의 잡음제거시 일반적으로 사용하고 있는 평균을 기초로 하는 통계적인 방법을 사용하지 않았다. 본 알고리즘에서는 Dauberchies 웨이블렛을 이용하여 자료의 저주파 성분만을 추출함으로 포화 이온 및 전자 전류성분을 변환 자료에서 직접 구하였다. 또한, 원시 자료의 1차 미분자료에 대한 이중 직교 웨이블레서 변환을 이용하여 플라즈마 전위를 직접 구할 수 있어 웨이블렛 변환을 거치는 과정에서 플라즈마 전자온도를 구하는 영역이 일관성 있게 정의되었다. 전자분포 모델은 ECR 플라즈마의 특징인 hot과 bulk의 두 가지 온도를 가지는 bi-Maxwallian 분포로 가정하고 Martquardt 방법을 사용한 비선형 fitting 방법으로 두 가지 전자 온도를 구하였다. 포화 이온 및 전자 전류 곡선의 플라즈마 전위에 해당하는 전류 값으로부터 플라즈마 이온 및 전자 밀도를 얻었으며 임의의 자료에 대한 알고리즘의 정확성 검사 결과 90%이상의 정확도를 보였다. A new algorithm for automating the analysis of Langmuir-probe traces taken from the ECR magnetized plasma is developed through the Daubechies wavelet and the bi-orthogonal wavelet transformations. This approach minimizes the operator-specified inputs and provides de-noised data without using the statistical method based on the averaging techniques. In this algorithm, the electron and ion current lines are obtained from the low frequency information of the Daubechies wavelet processed data. From the bi-orthogonal wavelet transform for the differentiated data, the plasma potential can be clearly determined. The region for obtaining the electron temperature can be systematically chosen from these processed data without operator-specified inputs. The electrons are modeled by a bi-Maxwellian distribution with hot and cold temperatures and nonlienar fitting method (a Martquardt method) is used to determine the electron temperatures from this region. Ion and electron plasma densities are obtained from the ion and the electron current at the plasma potential, respectively. The evaluation results by using the artificially generated data shows over 90% accuracy.

악교정 수술중 수액요법과 술후 합병증의 연관성

류정호,김대윤,배준수,양병은,유준영,김용관 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.5

Few topics in operative and perioperative patient management generate more controversy than that of appropriate fluid and electrolyte therapy. especially, controversy has swirled around colloid vs crystalloid therapy and the composition of administered fluids, agreement among clinicians as to what fluid therapy is appropriate, and in what amount, is rare. This controversy likely will be enhanced by Arieff' s provocative article. He described 11 adults and 2 pediatric patients. All developed fatal postoperative pulmonary edema, seemingly caused solely by excessive postoperative fluid administration. From January 1999 to December 1999, we investigated 24 patients, which were operated by orthognathic surgery, about the intraoperative fluid therapy and the associated effect in orthognathic surgery, which is regarded as one of the major surgery of oral and maxillofacial surgery. First, They were devided into two groups, that is one-jaw surgery and two-jaw surgery, and each groups were devided by intraoperative fluid volume of 8ml/kg/hr. Subjective assesment was collected through use of a series of 3 questionnaries. In each questionnaire, a 5-point Liekert scale was used far assessment of following parameters of recovery from anesthesia: headache, dizziness, drowsiness, nausea/vomiting, thirst. The patient completed questionnaire 1 at 4 hour after surgery, questionnaire 2 was completed at 24 hours after surgery, and questionnaire 3 was completed at 48 hours after surgery. This study demonstrated that appropriated perioperative rehydration decreases postoperative adverse outcomes and improved the patient's perception of the postoperative period.